US3572264A - Method and apparatus for removing smog and smoke - Google Patents

Method and apparatus for removing smog and smoke Download PDF

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US3572264A
US3572264A US857127A US3572264DA US3572264A US 3572264 A US3572264 A US 3572264A US 857127 A US857127 A US 857127A US 3572264D A US3572264D A US 3572264DA US 3572264 A US3572264 A US 3572264A
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smoke
fluid
filter
discharge
incinerator
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Joe F Mercer
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/09—Furnace gas scrubbers

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  • the first embodiment receives the effluent or smoke from the incinerator or stack, passes the burned gases through a U-shaped washing tower, propels the gases by blower through a conduit into a washing filter and into a discharge stack (FIG. 1).
  • the second embodiment or method utilizes a similar combination; however, the products of burning is recycled, washed, filtered and returned into the incinerator as disclosed in FIG. 3. This re-cycling process possesses certain advantages in maintaining the discharged gases at an elevated temperature reducing condensation in the components.
  • a fresh supply of water may be used in the washing towers as well as the washing filter with run-01f discharged into a drain or otherwise recovered or processed. If water conservation is a problem, the fluids may be re-cycled, filtered and reused by means of a device of the type illustrated in FIG. 2.
  • One object of the invention is to provide an inexpensive, uncomplicated method and device for removing objectionable residue from a smoke stack or an incinerator discharge.
  • a second object is to provide the relative small, inexpensive incinerator free of objectionable smoke embodying a re-cycling of the burning gases through the washing and filtering process in removing the objectionable burned products from the gases.
  • FIG. 1 is an elevation view of one embodiment of the device partially fragmented and schematic.
  • FIG. 2 is an elevation view of a sub-combination of an embodiment of the device partially fragmented and schematic illustrating a re-cycling of the washing fluid employing an auxiliary fluid filter.
  • FIG. 3 is an elevation view of an embodiment of the device partially fragmented and schematic illustrating a recycling of the burned gases into the incinerator or furnace.
  • the tower 12 may be constructed of a variety of types of piping or tubing.
  • the intake arm 13 of the washing tower 12 extends downward and into a base leg 14 which includes a drain 15.
  • the washing tower 12 projects upward through the exhaust arm 16.
  • Projecting into the intake 13 and the exhaust arms 16 are a multiplicity of fluid spray nozzles 17.
  • These nozzles 17 are similar in construction to the nozzle of a garden hose or spray gun set to atomize or fog an area. In a preferred embodiment of the device, improved results were obtained with an extremely fine spray approaching a mist or fog like discharge.
  • the nozzles 17 are mounted on pipe or tubing 18 which is connected to an external high pressure fluid supply (not shown).
  • the spray nozzles 17 are mounted in the center of the intake 13 and the exhaust arm 16 of the washing tower 12. Nozzles 17 discharge downward in the tower 12 and should be so constructed as to emit a spray filling the entire passageway in the tower 12.
  • a blower intake conduit 19 which connects to a centrifugal blower 20 or air pump.
  • the blower discharge conduit 21 projects into a filter chamber 22 and discharges in the lower area of the filter medium 23.
  • This filter medium 23 is supported in the filter chamber 22 by a screen or grill 24.
  • This structure creates a fluid recess 25 in chamber 22.
  • a multiplicity of filter spray nozzles 26 Positioned above the filter medium 23 is a multiplicity of filter spray nozzles 26 which are also connected by a pipe or tubing 18 to an external source of high pressure fluid (not shown).
  • the gases discharged from the filter chamber 22 are discharged into the atmosphere through the stack 27.
  • the fluid from washing tower 12 and the filter chamber 22 is collected through drain tubes 28 and discharged or further processed as desired.
  • a cleaning and re-cycling of the fluid into the device described above might well be accomplished in a manner similar to the structure disclosed in FIG. '2.
  • the fluids from the washing tower 12 or the filter chamber 22 may be re-cycled in the system by means of drain pumps 29 through drain tube 28 and the pipe 18 creating a source of high pressure fluid (not shown).
  • Fluid discharge from the filter chamber 22 can, in the process, be pumped into a filter bed 30.
  • Fluid is preferably sprayed or disbursed over the cleaning medium 31 by dispensing nozzles 26.
  • Cleaning medium 31 is preferably sand, crushed graphite ore, anthracite. The filtering of the fluid through the cleaning medium 31 will result in a reusable fluid.
  • the filter bed 30 may be cleaned by back washing which is well known in the art and need not be described in detail.
  • the filter bed 30 is constructed with a discharge 32 which is connected through a re-cycling tubing 33 to a re-cycling pump 34.
  • the pipe or tube 18 supplying the primary system first described can be connected to the re-cycling tubing 33 or the re-cycling pump 34 in this re-cycling embodiment of the invention.
  • FIG. 3 For a description of the construction operation of the method and embodiment of the device re-cycling the gases into the combustion chamber 35 of the incinerator or furnace 10, reference is made to FIG. 3.
  • the embodiment illustrated in FIG. 3 visualizes a relatively small, compact incinerator 10 of somewhat conventional construction including a door 36, grate 37 and ash door 38, exhaust stack 39. Attached to incinerator 10 at the upper most extremity opposite the exhaust stack 39 is the intake 11 of the Washing tower 12.
  • This washing tower 12 is constructed and functions exactly as previously described in the embodiment first mentioned.
  • the exhaust arm 16 of the washing tower 12 in this second embodiment in essence terminates in discharge conduit 21 projecting into the filter medium 23 in the filter chamber 22. Filter spray nozzles 26 are employed above the filter medium 23.
  • a structure similarly positioned to the discharge stack 27 of the first embodiment is the blower intake conduit 19.
  • the blower intake conduit 19 is connected to the blower 20 by an air inlet conduit 40, mounted in the air inlet conduit 40 is a slidingly adjustable air inlet door 41.
  • the blower 20 receives the filtered smoke or efl1uer1t from the filter chamber 22 mixed with fresh air and discharges the air and filtered eflluent mixture into the combustion chamber 35 of the incinerator 10.
  • the exhaust stack 39 was approximately one-half /2) the cross section of the intake 11 of the washing tower 12 and the blower inlet conduit 19 and blower discharge conduit 21. This ratio resulted in a recycling of the vast majority of the smoke, burned gases, or efliuent prior to discharge through exhaust stack 39. Even in the instance of burning diesel fuel in a smudge fire condition, the emissions of the exhaust stack 39 was clear.
  • An apparatus for cleaning the smoke or efiluent from an incinerator comprising:
  • washing tower operably connected to said intake conduit, said washing tower comprising:
  • a filter chamber having a top portion and a bottom portion comprising:
  • a blower means operably positioned in the combination adapted to move smoke or efi'luent through the components of the combination.
  • a drain pump operably positioned in said drain tube means adapted to propel the fluid through the said drain tube means
  • a re-cycling pump adapted to receive and propel a fluid from said re-cycling tube.

Abstract

AN IMPROVED METHOD AND APPARATUS FOR RECEIVING THE EFFLUENT OR SMOKE DISCHARGE FROM A SMOKE STACK OR INCINERATOR AND REMOVING VISIBLE SMOKE AND SUSPENDED PARTICLES BY WASHING AND FILTERING THE PRODUCTS OF BURNING INCLUDING A METHOD OF RE-CIRCULATING THE BURNED GASES FROM THE CLEANING PROCESS INTO THE CONBUSTION CHAMBER.

Description

March 23, 1971 J. F. MERCER 3,572,264
METHOD AND APPARATUS FOR REMOVING SMOG AND SMOKE Filed Sept. 11, 1969 2 Sheets-Sheet 1 INVENTOR JOE F. MERCER AT ORNEY March 23, 1971 J. F. MERCER 3,572,264
METHOD AND APPARATUS FOR REMOVING SMOG AND SMOKE Filed Sept. 11, 1969 2 Sheets-Sheet 2 INVENTOR JOE MERCER United States Patent 3,572,264 METHOD AND APPARATUS FOR REMOVING SMOG AND SMOKE Joe F. Mercer, 302 E. Wallace St., Gonzales, Tex. 78629 Filed Sept. 11, 1969, Ser. No. 857,127 Int. Cl. F23g 3/00 US. Cl. 110-8 4 Claims ABSTRACT OF THE DISCLOSURE An improved method and apparatus for receiving the eflluent or smoke discharge from a smoke stack or incinerator and removing visible smoke and suspended particles by washing and filtering the products of burning including a method of re-circulating the burned gases from the cleaning process into the combustion chamber.
Various devices have been designed for controlling the discharge from smoke stacks and incinerators; many of which involve complicated costly equipment. The method and device of this invention incorporates two embodiments which are closely related in that identical components are used; however, the structure and arrangement and method varies.
(1) The first embodiment receives the effluent or smoke from the incinerator or stack, passes the burned gases through a U-shaped washing tower, propels the gases by blower through a conduit into a washing filter and into a discharge stack (FIG. 1).
(2) The second embodiment or method utilizes a similar combination; however, the products of burning is recycled, washed, filtered and returned into the incinerator as disclosed in FIG. 3. This re-cycling process possesses certain advantages in maintaining the discharged gases at an elevated temperature reducing condensation in the components.
(3) In an area of abundance of water, a fresh supply of water may be used in the washing towers as well as the washing filter with run-01f discharged into a drain or otherwise recovered or processed. If water conservation is a problem, the fluids may be re-cycled, filtered and reused by means of a device of the type illustrated in FIG. 2.
One object of the invention is to provide an inexpensive, uncomplicated method and device for removing objectionable residue from a smoke stack or an incinerator discharge.
A second object is to provide the relative small, inexpensive incinerator free of objectionable smoke embodying a re-cycling of the burning gases through the washing and filtering process in removing the objectionable burned products from the gases.
For a detailed description and construction of various embodiments of the device, particular reference is made to the attached drawings:
FIG. 1 is an elevation view of one embodiment of the device partially fragmented and schematic.
FIG. 2 is an elevation view of a sub-combination of an embodiment of the device partially fragmented and schematic illustrating a re-cycling of the washing fluid employing an auxiliary fluid filter.
FIG. 3 is an elevation view of an embodiment of the device partially fragmented and schematic illustrating a recycling of the burned gases into the incinerator or furnace.
The improved method and the construction of the various embodiments and their operations will be described in detail in which reference will be made to the several views referred to above wherein like reference characters refer to identical or equivalent components through- "iceout the several views in the following detailed description.
The first device and method referred to incorporates a conventional incinerator or furnace 10. Attached to the smoke stack or discharge of the incinerator 10 is the intake 11 of the washing tower 12. The tower 12 may be constructed of a variety of types of piping or tubing. The intake arm 13 of the washing tower 12 extends downward and into a base leg 14 which includes a drain 15. The washing tower 12 then projects upward through the exhaust arm 16. Projecting into the intake 13 and the exhaust arms 16 are a multiplicity of fluid spray nozzles 17. These nozzles 17 are similar in construction to the nozzle of a garden hose or spray gun set to atomize or fog an area. In a preferred embodiment of the device, improved results were obtained with an extremely fine spray approaching a mist or fog like discharge. The nozzles 17 are mounted on pipe or tubing 18 which is connected to an external high pressure fluid supply (not shown). The spray nozzles 17 are mounted in the center of the intake 13 and the exhaust arm 16 of the washing tower 12. Nozzles 17 discharge downward in the tower 12 and should be so constructed as to emit a spray filling the entire passageway in the tower 12.
Attached to the washing tower 12 is a blower intake conduit 19 which connects to a centrifugal blower 20 or air pump. The blower discharge conduit 21 projects into a filter chamber 22 and discharges in the lower area of the filter medium 23. This filter medium 23 is supported in the filter chamber 22 by a screen or grill 24. This structure creates a fluid recess 25 in chamber 22. Positioned above the filter medium 23 is a multiplicity of filter spray nozzles 26 which are also connected by a pipe or tubing 18 to an external source of high pressure fluid (not shown). The gases discharged from the filter chamber 22 are discharged into the atmosphere through the stack 27. The fluid from washing tower 12 and the filter chamber 22 is collected through drain tubes 28 and discharged or further processed as desired.
A cleaning and re-cycling of the fluid into the device described above might well be accomplished in a manner similar to the structure disclosed in FIG. '2. The fluids from the washing tower 12 or the filter chamber 22 may be re-cycled in the system by means of drain pumps 29 through drain tube 28 and the pipe 18 creating a source of high pressure fluid (not shown). Fluid discharge from the filter chamber 22 can, in the process, be pumped into a filter bed 30. Fluid is preferably sprayed or disbursed over the cleaning medium 31 by dispensing nozzles 26. Cleaning medium 31 is preferably sand, crushed graphite ore, anthracite. The filtering of the fluid through the cleaning medium 31 will result in a reusable fluid. The filter bed 30 may be cleaned by back washing which is well known in the art and need not be described in detail. The filter bed 30 is constructed with a discharge 32 which is connected through a re-cycling tubing 33 to a re-cycling pump 34. In this re-cycling configuration, the pipe or tube 18 supplying the primary system first described can be connected to the re-cycling tubing 33 or the re-cycling pump 34 in this re-cycling embodiment of the invention.
For a description of the construction operation of the method and embodiment of the device re-cycling the gases into the combustion chamber 35 of the incinerator or furnace 10, reference is made to FIG. 3. The embodiment illustrated in FIG. 3 visualizes a relatively small, compact incinerator 10 of somewhat conventional construction including a door 36, grate 37 and ash door 38, exhaust stack 39. Attached to incinerator 10 at the upper most extremity opposite the exhaust stack 39 is the intake 11 of the Washing tower 12. This washing tower 12 is constructed and functions exactly as previously described in the embodiment first mentioned. The exhaust arm 16 of the washing tower 12 in this second embodiment in essence terminates in discharge conduit 21 projecting into the filter medium 23 in the filter chamber 22. Filter spray nozzles 26 are employed above the filter medium 23. A structure similarly positioned to the discharge stack 27 of the first embodiment is the blower intake conduit 19. The blower intake conduit 19 is connected to the blower 20 by an air inlet conduit 40, mounted in the air inlet conduit 40 is a slidingly adjustable air inlet door 41. The blower 20 receives the filtered smoke or efl1uer1t from the filter chamber 22 mixed with fresh air and discharges the air and filtered eflluent mixture into the combustion chamber 35 of the incinerator 10.
In the preferred embodiment, the exhaust stack 39 was approximately one-half /2) the cross section of the intake 11 of the washing tower 12 and the blower inlet conduit 19 and blower discharge conduit 21. This ratio resulted in a recycling of the vast majority of the smoke, burned gases, or efliuent prior to discharge through exhaust stack 39. Even in the instance of burning diesel fuel in a smudge fire condition, the emissions of the exhaust stack 39 was clear.
Having described my invention in detail in two embodiments and suggested one auxiliary modification the method and apparatus desired to be claimed is as defined in the appended claims.
I claim:
1. The method of cleaning the smoke or efiluent discharge of an incinerator comprising the steps of:
(a) drawing the effluent through a washing tower,
(b) injecting an atomized fluid downward into the washing tower through the effluent,
(c) discharging the effluent into a filter medium in a filter chamber,
(d) propelling the efliuent upward through the filter medium in the filter chamber,
(e) washing continuously with a fluid the efiiuent and the filter medium in the filter chamber,
(1) mixing fresh air with the effluent,
(g) re-cycling the efliuent into the combustion chamber of the incinerator, and
(h) discharging the re-cycled effluent from the combustion chamber.
2. The method of claim 1 including the steps of:
(a) recovering the fluid from the washing tower and the filter chamber,
(b) passing the fluid through a gravity flow filter bed,
and
(c) re-cycling the fluid to the washing tower and the filter chamber.
3. An apparatus for cleaning the smoke or efiluent from an incinerator comprising:
(a) an intake conduit adapted to receive smoke or efiluent from an incinerator,
(b) a substantially U-shaped washing tower operably connected to said intake conduit, said washing tower comprising:
(1) an intake arm, (2) an exhaust arm paralleling said intake arm,
(3) a base leg operably connecting said intake and said exhaust arms,
(4) a drain positioned at the lower apex of the said base leg, and
(5) a multiplicity of atomizing spray nozzles adapted to discharge a fluid downward in said intake and said exhaust arms;
(c) a filter chamber having a top portion and a bottom portion comprising:
(1) a container Wall,
(2) a screen support means mounted adjacent the bottom of said filter chamber,
(3) a filter medium above and supported by said screen and extending adjacent the top of said filter chamber,
(4) a multiplicity of spray nozzles constructed and arranged to spray fluid over and through the said filter medium, and
(5) a fluid drain means positioned in the bottom portion of said filter chamber;
(d) a conduit connecting said washing tower and discharging into said filter chamber adjacent the bottom portion of said filter medium;
(e) a discharge stack means adjacent the top of said filter chamber; and
(f) a blower means operably positioned in the combination adapted to move smoke or efi'luent through the components of the combination.
4. The invention of claim 3 including fluid re-cycling means comprising:
(a) a drain tube means operably connected to the drain in the base leg of the washing tower and the fiuid drain means in the said filter chamber,
(b) a drain pump operably positioned in said drain tube means adapted to propel the fluid through the said drain tube means,
(c) a filter bed adapted to receive a fluid discharge from said drain pump,
(d) a cleaning medium in said filter bed of suflicient depth and quality to clean said fluid,
(e) a filter discharge positioned in the bottom of said filter bed,
(f) a re-cycling tube operably connected to said filter discharge, and
(g) a re-cycling pump adapted to receive and propel a fluid from said re-cycling tube.
References Cited UNITED STATES PATENTS 1,010,068 11/1911 Pavella 261-17 3,155,472 11/1964 Huppke 233 3,210,914 10/1965 Eckert 26198 3,353,336 11/1967 Caballero 55244 3,485,015 12/1969 Vecchio 55234 KENNETH W. SPRAGUE, Primary Examiner US. Cl. X.R. 1 19
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Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668833A (en) * 1970-08-25 1972-06-13 William Francis Cahill Jr Apparatus and method for incinerating rubbish and cleaning the smoke of incineration
US3682139A (en) * 1971-06-15 1972-08-08 Paul A B Sahm Anti-pollution system for solid fuel-fired steam generating power plants
US3745939A (en) * 1971-11-10 1973-07-17 W Allbritton Effluent cleaner for trash-burning
US3756171A (en) * 1971-02-04 1973-09-04 Bord H De System for eliminating environmental pollution
US3757708A (en) * 1971-09-22 1973-09-11 Prospero P Di Pollution control device
US3766716A (en) * 1971-08-30 1973-10-23 R Ruiz Anti-pollution and hydromogenization
US3791315A (en) * 1971-07-08 1974-02-12 V Curtis Anti-pollution device
US3797204A (en) * 1971-11-11 1974-03-19 D Cavatassi Smoke washer apparatus
US3799076A (en) * 1972-05-04 1974-03-26 W Graves Smogless combustion apparatus
US3812793A (en) * 1972-04-19 1974-05-28 Trayler W Apparatus for treating noxious effluents
US3823531A (en) * 1972-08-15 1974-07-16 J Crawley Gas cleaner
US3835796A (en) * 1973-12-13 1974-09-17 Y Sanga Exhaust smoke purifying apparatus for incinerators
US3839803A (en) * 1973-01-30 1974-10-08 Fuller Co Method and apparatus for cooling hot particulate material
US3850118A (en) * 1973-08-27 1974-11-26 L Blair Anti-polluting incinerator
US3864485A (en) * 1972-06-30 1975-02-04 Braxton Corp Scrubber
US3882800A (en) * 1973-02-16 1975-05-13 Locaner Automotive unit for the collection and incineration of household or industrial refuse
US3906874A (en) * 1973-08-30 1975-09-23 Nutmeg Sanitation Inc Mobile furnace vehicle
US3938450A (en) * 1973-08-30 1976-02-17 Nutmeg Sanitation Inc. Mobile furnace vehicle
US4036593A (en) * 1973-03-30 1977-07-19 Shinobu Satoh Apparatus for purification of exhaust gases
US4110088A (en) * 1976-06-18 1978-08-29 Cold David M Apparatus and method for removal of pollutants from flue gas
US4114864A (en) * 1975-10-28 1978-09-19 Messer Griesheim Gmbh Device for removal of smoke gases, dust and the like
WO1980002868A1 (en) * 1979-06-15 1980-12-24 Energy Equip Method and apparatus en abling thermal energy recovery in combustor operation
US4374813A (en) * 1980-05-14 1983-02-22 Koch Engineering Company, Inc. Reverse-jet scrubber apparatus and method
US4388090A (en) * 1981-06-29 1983-06-14 Arnet Streeter Air scrubber
US4416855A (en) * 1981-02-09 1983-11-22 Koch Process Systems, Inc. Radioactive waste treatment apparatus
US4419331A (en) * 1982-04-12 1983-12-06 Michael F. Walters Sulphur dioxide converter and pollution arrester system
US4462318A (en) * 1981-12-31 1984-07-31 Ensco, Inc. Waste disposal
US4520741A (en) * 1981-12-31 1985-06-04 Ensco, Inc. Waste disposal
EP0152061A2 (en) * 1984-02-15 1985-08-21 Silvano Cappi Apparatus for the disposal of flue gas from gas or liquid-fuel boiler-burner groups
US4572083A (en) * 1985-05-16 1986-02-25 Griffith Arval H Combustion gas cleaning system
US4667608A (en) * 1986-06-20 1987-05-26 Chang Ming C Rubbish treating apparatus
US4702179A (en) * 1984-04-18 1987-10-27 Temperature Adjusters, Inc. Controlled coal burning and heat collecting method and apparatus
US4859219A (en) * 1987-03-12 1989-08-22 Huang Chien Feng Apparatus for precipitating exhausted smoke from a chimney
US4909161A (en) * 1989-04-13 1990-03-20 Germain Henri Paul Anti-pollution and anti-germ system
US6014790A (en) * 1998-07-30 2000-01-18 Smith; David A. Ductwork cleaning system
US6149137A (en) * 1998-11-02 2000-11-21 Callidus Technologies, Inc. Method and apparatus for quenching hot flue gases
US20030116018A1 (en) * 2001-12-25 2003-06-26 Hiroshi Echizen Wet-process gas treatment method and wet-process gas treatment apparatus
US20050106081A1 (en) * 2003-11-14 2005-05-19 Yao-Chang Lin Cleaning apparatus for removing impurities
US20060057036A1 (en) * 2002-10-25 2006-03-16 Angel Ayala Hermosillo System for elimnating polluting gases produced from combustion processes
US8580021B1 (en) * 2011-06-28 2013-11-12 Florencio A. McPherson Portable air scrubber device
US9638417B2 (en) 2014-01-13 2017-05-02 Umm Al-Qura University Apparatus and method for reducing air pollution from exhaust

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668833A (en) * 1970-08-25 1972-06-13 William Francis Cahill Jr Apparatus and method for incinerating rubbish and cleaning the smoke of incineration
US3756171A (en) * 1971-02-04 1973-09-04 Bord H De System for eliminating environmental pollution
US3682139A (en) * 1971-06-15 1972-08-08 Paul A B Sahm Anti-pollution system for solid fuel-fired steam generating power plants
US3791315A (en) * 1971-07-08 1974-02-12 V Curtis Anti-pollution device
US3766716A (en) * 1971-08-30 1973-10-23 R Ruiz Anti-pollution and hydromogenization
US3757708A (en) * 1971-09-22 1973-09-11 Prospero P Di Pollution control device
US3745939A (en) * 1971-11-10 1973-07-17 W Allbritton Effluent cleaner for trash-burning
US3797204A (en) * 1971-11-11 1974-03-19 D Cavatassi Smoke washer apparatus
US3812793A (en) * 1972-04-19 1974-05-28 Trayler W Apparatus for treating noxious effluents
US3799076A (en) * 1972-05-04 1974-03-26 W Graves Smogless combustion apparatus
US3864485A (en) * 1972-06-30 1975-02-04 Braxton Corp Scrubber
US3823531A (en) * 1972-08-15 1974-07-16 J Crawley Gas cleaner
US3839803A (en) * 1973-01-30 1974-10-08 Fuller Co Method and apparatus for cooling hot particulate material
US3882800A (en) * 1973-02-16 1975-05-13 Locaner Automotive unit for the collection and incineration of household or industrial refuse
US4036593A (en) * 1973-03-30 1977-07-19 Shinobu Satoh Apparatus for purification of exhaust gases
US3850118A (en) * 1973-08-27 1974-11-26 L Blair Anti-polluting incinerator
US3906874A (en) * 1973-08-30 1975-09-23 Nutmeg Sanitation Inc Mobile furnace vehicle
US3938450A (en) * 1973-08-30 1976-02-17 Nutmeg Sanitation Inc. Mobile furnace vehicle
USRE29502E (en) * 1973-08-30 1977-12-27 Nutmeg Sanitation, Inc. Furnace apparatus
US3835796A (en) * 1973-12-13 1974-09-17 Y Sanga Exhaust smoke purifying apparatus for incinerators
US4114864A (en) * 1975-10-28 1978-09-19 Messer Griesheim Gmbh Device for removal of smoke gases, dust and the like
US4110088A (en) * 1976-06-18 1978-08-29 Cold David M Apparatus and method for removal of pollutants from flue gas
WO1980002868A1 (en) * 1979-06-15 1980-12-24 Energy Equip Method and apparatus en abling thermal energy recovery in combustor operation
US4374813A (en) * 1980-05-14 1983-02-22 Koch Engineering Company, Inc. Reverse-jet scrubber apparatus and method
US4416855A (en) * 1981-02-09 1983-11-22 Koch Process Systems, Inc. Radioactive waste treatment apparatus
US4388090A (en) * 1981-06-29 1983-06-14 Arnet Streeter Air scrubber
US4462318A (en) * 1981-12-31 1984-07-31 Ensco, Inc. Waste disposal
US4520741A (en) * 1981-12-31 1985-06-04 Ensco, Inc. Waste disposal
US4419331A (en) * 1982-04-12 1983-12-06 Michael F. Walters Sulphur dioxide converter and pollution arrester system
EP0152061A3 (en) * 1984-02-15 1987-01-28 Silvano Cappi Apparatus for the disposal of flue gas from gas or liquid-fuel boiler-burner groups
EP0152061A2 (en) * 1984-02-15 1985-08-21 Silvano Cappi Apparatus for the disposal of flue gas from gas or liquid-fuel boiler-burner groups
US4702179A (en) * 1984-04-18 1987-10-27 Temperature Adjusters, Inc. Controlled coal burning and heat collecting method and apparatus
US4572083A (en) * 1985-05-16 1986-02-25 Griffith Arval H Combustion gas cleaning system
US4667608A (en) * 1986-06-20 1987-05-26 Chang Ming C Rubbish treating apparatus
US4859219A (en) * 1987-03-12 1989-08-22 Huang Chien Feng Apparatus for precipitating exhausted smoke from a chimney
US4909161A (en) * 1989-04-13 1990-03-20 Germain Henri Paul Anti-pollution and anti-germ system
US6014790A (en) * 1998-07-30 2000-01-18 Smith; David A. Ductwork cleaning system
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