US3221994A - Retractable furnace slurry sprayer - Google Patents

Retractable furnace slurry sprayer Download PDF

Info

Publication number
US3221994A
US3221994A US281971A US28197163A US3221994A US 3221994 A US3221994 A US 3221994A US 281971 A US281971 A US 281971A US 28197163 A US28197163 A US 28197163A US 3221994 A US3221994 A US 3221994A
Authority
US
United States
Prior art keywords
valve
spray tube
air
tube
spray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US281971A
Other languages
English (en)
Inventor
Robert E Chappell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diamond Power Specialty Corp
Original Assignee
Diamond Power Specialty Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diamond Power Specialty Corp filed Critical Diamond Power Specialty Corp
Priority to US281971A priority Critical patent/US3221994A/en
Priority to GB15965/64A priority patent/GB993690A/en
Priority to SE5756/64A priority patent/SE305709B/xx
Priority to DED44469A priority patent/DE1301869B/de
Application granted granted Critical
Publication of US3221994A publication Critical patent/US3221994A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/02—Supports for cleaning appliances, e.g. frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the present invention broadly pertains to spraying apparatus and more particularly to an improved extractable type sprayer adapted for mounting on a wall of a heat exchanger apparatus for automatically spraying a liquid or slurry of a chemical additive into the interior of the boiler.
  • the apparatus comprising the present invention is particularly applicable for adapting a heat exchanger apparatus with a chemical additive system without necessitating a modification of the cleaning equipment originally installed.
  • the furnace sprayer comprising the present invention is particularly applicable for injecting chemical additives such as magnesium oxide and/or calcium oxide in the form of an aqueous slurry against the heat exchanger surfaces of direct-fired combustion apparatus to effect a reduction in the corrosion of such heat exchanger surfaces and to increase the ease by which the deposits such as soot and slag can be removed therefrom by conventional boiler cleaning equipment.
  • Effective control of corrosion and slag deposition requires periodic treatment of the heat exchanger surfaces with a prescribed quantity of the slurry additive.
  • the automatic operation of the furnace sprayer comprising the present invention enables it to be readily adapted to an automatic sequentially phased control system incorporating a plurality of such sprayers which can be operated in a preselected sequentially phase sequence at preselected time intervals. Automatic systems of this type substantially eliminate the problems associated with a haphazard treatment of heat exchanger surfaces as encountered by manually operated sprayers which require considerable attention and manpower to provide the requisite treating function.
  • Another object of the present invention is to provide an improved furnace sprayer which on actuation is operative to automatically efifect a discharge of a liquid chemical additive in the form of a fine sized spray into the interior of a heat exchanger apparatus and thereafter is automatically retracted and the interior of the spray tube is purged by a high pressure air blast to remove any residual liquid chemical thereon.
  • Still another object of the present invention is to provide an improved furnace sprayer which is of simple design, of durable operation, of versatile installation, and of economical manufacture and operation.
  • a furnace sprayer adapted for mounting on the wall of a heat exchanger apparatus and including a spray tube formed with a nozzle in the forward end thereof which is reciprocable to and from an inoperative retracted position to an operative projected position and which spray tube incorporates actuator means thereon for automatically actuating valve means responsive to the reciprocating movement thereof for starting and stopping the flow of liquid treating additive into the spray tube and for starting and stopping a pressurized purging gas maintaining the interior of the spray tube in a substantially clean condition preparatory to the next operating cycle.
  • furnace sprayer comprising the present invention is particularly applicable for injecting a treating slurry against the heat exchanger surfaces of direct-fired heat exchanger apparatus
  • sprayer can also be satisfactorily employed in other installations wherein periodic automatic spray application of fluids is required.
  • FIGURE 1 is a side elevation view partly in section of a slurry furnace sprayer constructed in accordance with the preferred embodiment of the present invention removably mounted on the exterior surface of a boiler;
  • FIG. 2 is a magnified plan view of the furnace sprayer shown in FIGURE 1;
  • FIG. 3 is a side elevation view of the furnace sprayer shown in FIGURE 2;
  • FIG. 4 is a transverse vertical sectional view through the furnace sprayer shown in FIGURE 3 and taken along the line 44 thereof;
  • FIG. 5 is a perspective view of the underside of the furnace sprayer shown in FIGURES 13.
  • FIG. 6 is an enlarged plan view partly in section and partly in phantom illustrating in particular the arrangement of the piping for supplying pressurized air to the furnace sprayer;
  • PEG. 7 is a magnified fragmentary sectional view of an orifice port in the piping arrangement shown in FIG- URE 6 and taken along the line 7-7 thereof.
  • a pair of gussets 14 are preferably rigidly welded to the mounting plate 12 and member if) for reinforcing the framework.
  • the mounting plate 12 is formed with a plurality of apertures 16 therethrough for removably securing the furnace sprayer such as by means of bolts to a plate 18 mounted in a port 20 of a wall 22 of the heat exchanger apparatus.
  • the plate 18 and the mounting plate 12 of the sprayer framework is formed with a pair of aligned holes 24 through which the nozzle end portion of a spray tube 26 projects and is movable therethrough during the projecting and retracting movement of the spray tube.
  • the forward end portion of the spray tube 26, as best seen in FIGURES 2 and 3, is formed with a nozzle head 28 having at least one small hole (not shown) therein through which the fluid chemical additive is discharged during operation of the sprayer unit.
  • the particular type of nozzle head 28 and the disposition of the discharge holes therein can be selected so as to provide the desired spray configuration in accordance with the disposition of the heat exchanger surfaces to be treated.
  • the spray tube and nozzle head are disposed in the fully retracted position wherein the nozzle head is located within the port and out of direct contact with the hot combustion gases within the interior of the boiler. Any heat absorbed by the forward face of the nozzle head 28 is quickly conducted outwardly along the spray tube which is located exteriorly of the boiler and at a relatively low ambient temperature.
  • the spray tube and nozzle head are reciprocated to a fully projected position as shown in phantom in FIG URE 1 wherein the nozzle head is disposed beyond the water wall tubes 30 disposed along the inner surface of the boiler wall 22.
  • a liquid treating additive such as an aqueous slurry of calcium oxide and/or magnesium oxide for example, is discharged from the nozzle head in a manner such that the fine sized droplets impinge on the heat exchanger surfaces to be treated.
  • the reciprocation of the spray tube 26 to and from the inoperative position and the projected position is achieved by a double acting air-actuated cylinder 32 which is affixed to the inner surface of a web 34 of the member 10 such as by means of bolts 36 and is positioned with its piston rod 38 disposed in substantial longitudinal alignment with the hole 24 in the mounting plate 12.
  • the end of the piston rod 38 is secured to a T fitting 40 into the other end of which the rearward end of the spray tube 26 is threadably disposed in pressure-sealing relationship.
  • a slide block 42 is adjustably afiixed to the rearward end of the spray tube 26 adjacent to the T fitting 40 such as by means of a set screw 43 as may be best seen in FIGURE 4.
  • An actuator pin 44 is threadably engaged in the slide block 42 and projects upwardly through a longitudinal groove or slot 46 extending along the forward portion of the web 34 of the member 10.
  • the actuator pin 44 is movable along the slot 46 in response to the reciprocating travel of the spray tube and during which travel the actuator pin coacts with and pivotally rotates a bifurcated cam 48 of an air valve 50 and a bifurcated cam 52 of a liquid slurry valve 54.
  • a cover shield 55 is preferably mounted on the frame as best shown in FIGS. 3 and 4.
  • the cams 48, 52 as best seen in FIGURES 2-4 are oriented relative to the slot 46 and actuator pin 44 so as to be moved from the positions as shown in solid lines in FIGURE 2 to the positions as shown in phantom which are disposed approximately 90 from the original position shown.
  • Each of the earns 48, 52 are provided with an inwardly extending slot 56 which flares outwardly at the outer ends thereof indicated at 58 to facilitate engagement and disengagement with the actuator pin 44.
  • the cam 48 when in the position as shown in solid lines in FIGURE 2 places the air valve 50 in the open position. Movement of the cam 48 from the position as shown in solid lines to the position as shown in phantom effects a closing of the air valve 50.
  • the supply of an aqueous slurry or other suitable liquid additive chemical to the interior of the spray tube is achieved by a main supply header 60 disposed exteriorly of the wall of the boiler to which a supply pipe 62 is connected for supplying slurry to each individual furnace sprayer unit.
  • a main shutotf valve 64 is incorporated in each supply pipe 62 for manually shutting off the supply of slurry to the spray unit as may be required from time to time to permit service of the unit.
  • the supply pipe 62 is connected to the inlet side of the slurry valve 54 and the outlet of the slurry valve is connected to a T fitting 66 by means of a pipe 67 which is clamped to the member 10 by means of a U-bolt 69.
  • the outlet of the T fitting 66 is connected by means of a flexible conduit or hose 68 to the T fitting 40 at the rear end of the spray tube.
  • the flexible hose 68 enables unrestricted reciprocating movement of the spray tube relative to the framework of the spray unit.
  • the other side of the T fitting 66 is connected to the outlet side of the air valve 50 by means of a pipe or tube 70.
  • the inlet side of the air valve 50 is connected to a check valve 72 which in turn is connected to the outlet side of a chamber or air pressure accumulator 74 which is clamped to the side of the frame member 10 by means of a U-bolt 75.
  • the check valve 72 is oriented so as to prevent fiow of treating slurry into the accumulator 74 and attendant tubing network in the event of malfunction of the air valve 50 or slurry valve 54.
  • the air pressure accumulator 74 is provided with a T fitting 76, as best shown in FIGURES 5 and 6, mounted on the wall thereof intermediate to its ends. Each of the sides of the T fitting 76 is connected to a check valve 78, 80 which are oriented to permit the flow of air into but not out of the accumulator.
  • the inlet side of the check valve 78 is connected by means of a tube 82 to a T fitting 84 mounted on and disposed in communication with the rod end of the pneumatic cylinder 32.
  • the tube 82 is connected by means of a tube fitting 86 to the T fitting 84 and is provided at that connection with an orifice disc 88 to restrict the flow of air to the accumulator.
  • the other branch of the T fitting 84 is connected by means of a tube 99 to an outlet port 92 of a solenoid actuated control valve 94.
  • the other check valve 80 connected to the T fitting 76 mounted on the pressure accumulator is connected at its inlet side by means of a tube 96 to a T fitting 98 mounted on and disposed in communication with the blank end of the pneumatic cylinder 32.
  • the tube 96 is connected to the T fitting 98 in a manner similar to the connection between the tube 82 and fitting 84 employing an orifice disc 100 as best seen in FIG. 7 to restrict the flow of air therethrough.
  • the other outlet branch of the T fitting 98 is connected by means of a tube 102 to a T fitting 104 connected to a second outlet port 106 of the control valve 94.
  • the other branch of the T fitting 104 is provided with an orifice disc 108 for a purpose subsequently to be described.
  • the control valve 94 is of the solenoid actuable type well known in the art and is formed with the first outlet port 92 and second outlet port 106 which are connected to the pneumatic cylinder and pressure accumulator in a manner as previously described and as best seen in FIG- URE 6.
  • the control valve 94 is also formed with an inlet port 110 which is adapted to be connected by means of a tube 112 to a source of high pressure air which is operable to effect pneumatic actuation of the air cylinder 32, for purging the interior of the spray tube at the completion of a spraying cycle, and for supplying a continuous low volume stream of air for discharge through the nozzle head during the period of inoperation of the spray unit maintaining the nozzle holes open and for cooling the spray tube and the nozzle head thereon.
  • the control valve 94 incorporates a resiliently biased valve mechanism therein which when the solenoid is in the deenergized condition, places the outlet port 92 in communication with the inlet port 110 maintaining a positive pressure at the rod end of the cylinder 32 and thereby maintaining the spray tube in the fully retracted position. At the same time a continuous bleed of air flow passes through the orifice disc 88 through the air pressure accumulator for discharge into the spray tube and then out through the holes in the nozzle head thereon.
  • valve mechanism Upon energization of the control valve 94, the valve mechanism is moved so as to place the inlet port 110 in communication with the outlet port 106 applying high pressure air to the blank end of the cylinder effecting movement of the piston rod and spray tube to the fully projected position while simultaneously effecting a buildup of pressure within the pressure accumulator.
  • Suitable electrical timing means can be incorporated in such a system for energizing each control valve and maintaining that valve energized for a preselected time period to enable the injection of a prescribed quantity of liquid additive into the interior of the heat exchanger apparatus.
  • each unit can be energized remotely such as by a control button on the master operating panel which may incorporate a suitable adjustable time delay relay for maintaining that spray unit energized for a selected time interval.
  • the air in the T fitting S4 bleeds through the orifice disc 88 passing through the tube 82 and check valve 78 into the pressure accumulator 74 from which it is discharged through the check valve 72 and open air valve 48 through the tube 70 and T fitting 66 into the flexible hose 68 connected to the T fitting 40 at the rearward end of the spray tube 26.
  • This constant trickle of air is discharged through the nozzle head 28 serving the dual function of maintaining the nozzle ports clear and cooling the nozzle head and forward end portion of the spray tube during inoperation.
  • the commencement of the operating cycle of the spray unit is simply achieved by energizing the solenoid of the control valve 94 which moves its valve component so as to close communication between the inlet port 110 and outlet port 92 and open communication between the inlet port 110 and outlet port 106. Accordingly, high pressure actuating air is diverted from the rod end of the air cylinder 32 to the blank end thereof through the tube 102 and T fitting 98 whereupon the piston rod 38 and the spray tube connected thereto commence their projecting travel. During the projecting travel of the piston rod 38, the air in the rod end of the cylinder is discharged out through the T fitting 84 and aperture disc 88 and passes into the accumulator 74 by means of the tube 82, check valve 78 and T fitting 76.
  • the orifice disc 88 provides sufiicient restriction so as to provide a cushioning effect and preventing the piston from moving too rapidly toward the fully projected position.
  • the air thus entering the accumulator 74 is discharged into the spray tube until such time that the air valve 50 is closed in response to the advancing movement of the spray tube.
  • the control valve 94 With the control valve 94 in this position, the quantity of air which is discharged through the orifice disc 108 in the T fitting 104 is negligible in comparison to that which is transmitted through the tube 102 into the blank end of the cylinder 32 efiecting forward movement of the piston therein.
  • the actuator pin 44 contacts the slot 56 of the cam 48 moving it from the position as shown in solid lines to the position as shown in phantom effecting thereby a closing of the air valve 50.
  • the air pressure transmitted through the orifice disc 88 through the tube 82 and through the orifice disc 100 through the tube 96 into the pressure accumlator 74 effects a progressive buildup of air pressure therein.
  • the actuator pin 44 coacts with the cam 52 effecting a movement thereof from the position as shown in solid lines in FIGURE 2 to the position as shown in phantom whereupon the slurry valve 54 is opened.
  • the liquid treating additive such as an aqueous slurry supplied from the supply header 6% through the open shutoff valve 64 passes through the slurry valve 54 and T fitting 65 through the flexible hose 68 and is discharged into the T fitting 40 at the rearward end of the spray tube 26.
  • the pressurized liquid additive is discharged from the nozzle head 28 with the spray tube in substantially the fully projected position as shown in phantom in FIGURE 1.
  • the spray tube is maintained in the fully projected position by the positive pressure applied to the blank end of the pneumatic cylinder 32. While in the fully projected position, air pressure continues to accumulate in the pressure accumulator 74 via the bleed of air passing through the orifice disc 1%, tube 96 and check valve and eventually approaches the pressure of the air supplied through the supply tube 112.
  • the solenoid of the control valve 94 is deenergized effecting a movement of the valve component therein so as to place the inlet port 110 in communication with the outlet port 92 and to close communication between the inlet port 119 and outlet port 106. Accordingly, pressurized air is directed into the rod end of the pneumatic cylinder 32 through the tube and T fitting 84 effecting an initiation of the retracting movement of the spray tube.
  • the blank end of the cylinder is vented through the T fitting 98 and tube 102 and the air is discharged through the orifice disc 108 providing sufficient restriction so as to retard and cushion the retracting movement thereof.
  • the actuator pin 44 coacts with the cam 52 moving it from the position as shown in phantom in FIGURE 2 to the position as shown in solid lines effecting thereby a closing of the slurry valve 54. Accordingly, the flow of slurry to the spray tube is halted.
  • the actuator pin 44 coacts with the cam 48 moving it from the position as shown in phantom in FIGURE 2 to the position as shown in solid lines effecting an opening of the air valve 56.
  • the air valve 50 is opened, the
  • accumulated air pressure in the pressure accumulator 74 is discharged through the check valve 72, tube 70, T fitting 66, flexible hose 68 and T fitting 40 into the rearward end of the spray tube 26.
  • This high volume surge of pressurized air serves to purge the residuaiy slurry or liquid additive in the supply conduits and spray tube preventing any residual accumulation therein which might oiherwise have a tendency to foul the nozzle ports.
  • a spray apparatus comprising a frame, a spray tube movably mounted on said frame and formed with a nozzle in the forward end portion thereof, an air operated means connected to said spray tube for effecting reciprocation thereof to and from a retracted position and a projected position, first conduit means including a first valve for supplying a pressurized liquid additive to said spray tube, second conduit means including a second valve for supplying pressurized air to said spray tube, supply means including control means for supplying pressurized air to said air operated means and said second conduit means, coacting means on said spray tube and said first and said second valve for engaging and closing said second valve and thereafter engaging and opening said first valve in response to the projecting travel of said spray tube and for closing said first valve and opening said second valve in response to the retracting travel of said spray tube, pressure accumulating means disposed in communicaation with said supply means and said second conduit means for accumulating air under pressure upon closing of said second valve and for discharging the accumulated air and purging said spray tube upon the opening of said second valve.
  • a spray apparatus comprising a frame, a spray tube movably mounted on said frame and formed with a nozzle in the forward end portion thereof, an air cylinder connected to said spray tube for effecting reciprocation thereof to and from a retracted position and a projected position, first conduit means including a first valve for supplying a pressurized liquid additive to said spray tube, second conduit means including a second valve for supplying pressurized air to said spray tube, supply means including control means for supplying pressurized air to said cylinder and said second conduit means, coacting means on said spray tube and said first and said second valve for engaging and closing said second valve and thereafter engaging and opening said first valve in response to the projecting travel of said spray tube and for closing said first valve and thereafter opening said second valve in response to the retracting travel of said spray tube, a chamber on said frame disposed in communication with said supply means and said second conduit means for accumulating air under pressure upon closing of said second valve and for discharging the accumulated air and purging said spray tube upon the opening of said second valve and for supplying a
  • a furnace sprayer comprising a frame, a spray tube movably and guidably mounted on said frame and formed with a nozzle in the forward end portion thereof, a double acting air cylinder connected to said spray tube for efifecting longitudinal reciprocation thereof to and from a retracted inoperative position and a projected operative position, first conduit means including a first valve for supplying a pressurized liquid additive to said spray tube, second conduit means including a second valve for supplying pressurized air to said spray tube, supply means including a remotely actuable control valve for supplying pressurized air to said cylinder and said second conduit means, actuator means on said spray tube, a first cam on said first valve and a second cam on said second valve and longitudinally spaced from said first cam, said actuator means operable to contact and actuate said first and said second cam for sequentially closing said second valve and thereafter opening said first valve in response to the projecting travel of said spray tube and for closing said first valve and thereafter opening said second valve in response to the retracting travel of said spray tube, a
US281971A 1963-05-21 1963-05-21 Retractable furnace slurry sprayer Expired - Lifetime US3221994A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US281971A US3221994A (en) 1963-05-21 1963-05-21 Retractable furnace slurry sprayer
GB15965/64A GB993690A (en) 1963-05-21 1964-04-17 Apparatus for spraying the interior of a heat exchanger
SE5756/64A SE305709B (de) 1963-05-21 1964-05-11
DED44469A DE1301869B (de) 1963-05-21 1964-05-19 Reinigungsvorrichtung fuer Waermeaustauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US281971A US3221994A (en) 1963-05-21 1963-05-21 Retractable furnace slurry sprayer

Publications (1)

Publication Number Publication Date
US3221994A true US3221994A (en) 1965-12-07

Family

ID=23079543

Family Applications (1)

Application Number Title Priority Date Filing Date
US281971A Expired - Lifetime US3221994A (en) 1963-05-21 1963-05-21 Retractable furnace slurry sprayer

Country Status (4)

Country Link
US (1) US3221994A (de)
DE (1) DE1301869B (de)
GB (1) GB993690A (de)
SE (1) SE305709B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973730A (en) * 1975-06-25 1976-08-10 John David Johnson Apparatus for applying refractory coating to the roof linings of electric arc furnaces
US4181258A (en) * 1977-03-23 1980-01-01 Quigley Company, Inc. Sprayer for repairing refractory lining
EP0391038A1 (de) * 1989-04-01 1990-10-10 Bergemann GmbH Russbläser
US20110132282A1 (en) * 2009-12-11 2011-06-09 Christopher L. Abeyta System and method for injecting compound into utility furnace
US9303870B2 (en) 2009-12-11 2016-04-05 Power & Control Solutions, Inc. System and method for injecting compound into utility furnace

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018001912B4 (de) 2018-03-08 2022-11-10 Maik Olbert Verfahren und Anordnung zum Reinigen der Rauchgasflächen eines Wärmetauschers eines Brennwertkessels

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA601617A (en) * 1960-07-12 Columbus Automatic Lubrication Company Spraying device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE628434C (de) * 1933-07-30 1936-04-04 Babcock & Wilcox Dampfkessel W Russblaeser
DE974165C (de) * 1951-02-09 1960-10-06 Steinmueller Gmbh L & C Verfahren und Einrichtung zum Abblasen rauchgasbeheizter Rohre mittels Russblaeser
GB894548A (en) * 1959-09-08 1962-04-26 John Thompson Australia Propri Sootblower

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA601617A (en) * 1960-07-12 Columbus Automatic Lubrication Company Spraying device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973730A (en) * 1975-06-25 1976-08-10 John David Johnson Apparatus for applying refractory coating to the roof linings of electric arc furnaces
US4181258A (en) * 1977-03-23 1980-01-01 Quigley Company, Inc. Sprayer for repairing refractory lining
EP0391038A1 (de) * 1989-04-01 1990-10-10 Bergemann GmbH Russbläser
US20110132282A1 (en) * 2009-12-11 2011-06-09 Christopher L. Abeyta System and method for injecting compound into utility furnace
US9303870B2 (en) 2009-12-11 2016-04-05 Power & Control Solutions, Inc. System and method for injecting compound into utility furnace
US9476582B2 (en) 2009-12-11 2016-10-25 Power & Control Solutions, Inc. System and method for removing slag inside a utility furnace

Also Published As

Publication number Publication date
SE305709B (de) 1968-11-04
DE1301869B (de) 1969-08-28
GB993690A (en) 1965-06-02

Similar Documents

Publication Publication Date Title
US3631555A (en) Tube-cleaning pellet gun
US2465562A (en) Vehicle washer
US3221994A (en) Retractable furnace slurry sprayer
US5237718A (en) Sootblower with lance bypass flow
US3115145A (en) Apparatus for cleaning cooling systems
US3458133A (en) Purging system for a spray painting installation
IT8222707A1 (it) Metodo ed apparato di pulitura, del tipo a getti di liquido ad impulsi, di superfici fortemente riscaldate
US3234580A (en) Treatment of heat exchanger surfaces
SU1109070A3 (ru) Пика дл обдувочных аппаратов
US1926076A (en) Track sprinkler
US2558681A (en) Spraying device in combination with a differential control valve
US2538701A (en) Gas turbine plant heat exchanger cleaning apparatus
DK149503C (da) Udsproejtningsdyse til hoejtryksrensere
US1758810A (en) Method of and in apparatus for treating the tubes of surface condensers and the like to prevent corrosive action
US2619119A (en) Fluid pressure operated multiway valve
US1814766A (en) Gun for driving slugs
US3463399A (en) Die lubricant spraying apparatus
US2972502A (en) Projection-type cleaning apparatus
US1755643A (en) Track-sanding apparatus
EP0466943A4 (en) Liquid pulverizer
US2898062A (en) Blowers for railway switches
US3455588A (en) Automatic unclogging device for fluid locomotive sanding systems
US1416401A (en) Air-washing device
US1818989A (en) Automatic snow removing device
US1806365A (en) System and apparatus for spraying