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US20080072805A1 - Piggybacked Pyrolyzer and Thermal Oxidizer - Google Patents

Piggybacked Pyrolyzer and Thermal Oxidizer Download PDF

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Publication number
US20080072805A1
US20080072805A1 US11/862,378 US86237807A US2008072805A1 US 20080072805 A1 US20080072805 A1 US 20080072805A1 US 86237807 A US86237807 A US 86237807A US 2008072805 A1 US2008072805 A1 US 2008072805A1
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US
United States
Prior art keywords
pyrolyzer
thermal oxidizer
thermal
oxidizer
pyrolysis
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.)
Abandoned
Application number
US11/862,378
Other languages
English (en)
Inventor
Cameron Cole
Toby Cole
Dan Watts
Raul Torres
Michael Sorrell
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.)
International Environmental Solutions Corp
Original Assignee
International Environmental Solutions 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
Priority claimed from US11/757,189 external-priority patent/US20080127867A1/en
Application filed by International Environmental Solutions Corp filed Critical International Environmental Solutions Corp
Priority to US11/862,378 priority Critical patent/US20080072805A1/en
Priority to PCT/US2008/001020 priority patent/WO2008153607A2/fr
Publication of US20080072805A1 publication Critical patent/US20080072805A1/en
Assigned to INTERNATIONAL ENVIRONMENTAL SOLUTIONS CORPORATION reassignment INTERNATIONAL ENVIRONMENTAL SOLUTIONS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COLE, CAMERON, SORRELL, MICHAEL SCOTT, TORRES, RAUL DE LA, WATTS, DAN, COLE, TOBY L.
Priority to US13/081,749 priority patent/US20110271882A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/30—Pyrolysing
    • F23G2201/303—Burning pyrogases

Definitions

  • the field of the invention is furnaces, and especially furnaces involved with liberating gas from solid fuel. (Class 110/229).
  • Pyrolysis employs high temperatures in a relatively oxygen free environment to remove volatiles from solid fuels, as well as gases that can be released at high temperature from breaking down a feedstock. Depending on the feedstock, the volatiles can then be burned to produce usable energy.
  • a typical waste treatment system utilizing pyrolysis includes: (a) an input structure for introducing waste; (b) a pyrolytic converter for breaking down a feedstock and generating waste gases; and (c) a thermal oxidizer that burns the waste gases (also referred to herein as “syngas” or “syn gases”).
  • a portion of the heated gases can be transported back into an outer chamber of the pyrolyzer to help sustain continued pyrolysis of the feedstock.
  • One advantage of the side-by-side configuration is that one can readily transfer heat from the thermal oxidizer to the pyrolyzer.
  • Barba '855 for example, teaches combusting the syn gases in a thermal oxidizer, and then transferring a portion of the exhaust gas from the oxidizer back into the pyrolyzer.
  • the present invention provides apparatus, systems and methods in which a pyrolyzer and a thermal oxidizer of a waste treatment system are aligned in a partially or completely piggybacked fashion, and heat from the exhaust gas of the thermal oxidizer is shunted back to the pyrolyzer.
  • Such configurations can advantageously decrease the floor space needed in a waste treatment facility, while still providing excellent energy efficiency.
  • the terms “piggyback”, “piggybacking” and the like should be interpreted broadly as applied to a pyrolyzer and the thermal oxidizer combination, to include all situations where a vertical line would pass through portions of both the pyrolyzer and the thermal oxidizer.
  • all configurations where the thermal oxidizer or the pyrolyzer lies directly over the other are considered piggybacked, as are configurations where the alignment is more askew, but one of the pyrolyzer and the thermal oxidizer is still at least partially over the other.
  • one of the pyrolyzer and the thermal oxidizer is elevated relative to one another by at least 2 meters (m).
  • the pyrolyzer is also distanced from the thermal oxidizer by less than 2 meters, and a saddle is disposed between the pyrolyzer and the thermal oxidizer to prevent heat transfer.
  • Preferred pyrolyzers have an inner chamber that carries a waste stream, an outer chamber that provides heat to the inner chamber to sustain pyrolysis, and an outlet for release of syngas produced during pyrolysis.
  • Thermal oxidizers burn at least a portion of the syn gases in a hot flame from a natural gas burner, thereby producing hot exhaust gases.
  • Thermal oxidizers also preferably have a conduit that transports a portion of the hot exhaust gases back to the outer chamber of the pyrolyzer, which conducts heat to a waste stream in the inner chamber of the pyrolyzer to help sustain pyrolysis.
  • Such conduits can have any suitable configuration, including for example where the conduit extends from sides (as opposed to the ends) of each of the pyrolyzer and the thermal oxidizer.
  • the pyrolyzer and the thermal oxidizer can have any suitable dimensions, but preferably the pyrolyzer and the thermal oxidizer are at least 5 meters long, and have a cross sectional area of at least 10 m 2 . In most contemplated embodiments, the thermal oxidizer has a length within 20% of the length of the pyrolyzer.
  • FIG. 1 is a perspective view of a pyrolyzer and a thermal oxidizer in a piggyback configuration.
  • FIG. 2A comprises a vertical end view of the piggyback configuration of FIG. 1 .
  • FIG. 2B comprises a vertical end view of an alternative piggyback configuration of a pyrolyzer and a thermal oxidizer.
  • FIGS. 1 and 2 A generally depict a waste treatment system 100 having a pyrolyzer 110 and a thermal oxidizer 140 in a preferred piggyback configuration.
  • Pyrolyzer 110 generally includes an outer housing 112 , an inner housing 114 , a heated outer chamber 112 A between the inner and outer housings, and an inner reaction chamber 114 A in which pyrolysis occurs.
  • Conveyor mechanism 120 is disposed within, and passes through inner housing 114 .
  • conveyor mechanism 120 is a screw type conveyor that transports waste input as shown by arrow 118 , through inner reaction chamber 114 A as pyrolysis occurs.
  • Waste input 118 can accept any suitable type of waste, including for example, municipal waste, and especially including dried waste from sewage, municipal garbage, plastic scraps, scrap wood, oil impregnated rags and refuse oils, scrap metal, and old tires and other articles of rubber.
  • Waste processed in the pyrolyzer exits the inner reaction chamber 114 A as char, shown by arrow 124 , via char outlet conduit 122 . Processing of the waste also produces syn gases (pyrolysis waste gases), which exits the inner reaction chamber 114 A via conduit 126 , as shown by arrow 128 , and then travels to the thermal oxidizer 140 .
  • Thermal oxidizer 140 generally includes an input of syngas from conduit 126 , a burner 142 , an exhaust gas return conduit 144 , and an exhaust gas outlet 148 .
  • the composition of the syngas can vary greatly as a function of the waste being pyrolyzed, with syngas from pyrolysis of municipal waste, for example, typically including hydrogen, carbon monoxide, methane, and lower molecular weight hydrocarbons, as well as nitrogen and carbon dioxide.
  • a hot flame from a natural gas burner 142 is preferably used to initiate combustion of the syn gases 128 , thereby producing hot exhaust gases 145 .
  • Exhaust gas return conduit 144 shunts a portion of hot exhaust gases 145 back to outer chamber 112 A of pyrolyzer 110 .
  • Outer chamber 112 A of pyrolyzer 110 conducts heat to a stream of waste in inner reaction chamber 114 A of pyrolyzer 110 to help sustain pyrolysis.
  • Exhaust gas return conduit 144 can have any suitable configuration, including for example where the conduit extends from sides (as opposed to the ends) of each of the pyrolyzer 110 and the thermal oxidizer 140 . Any portion of hot exhaust gases 145 not shunted to pyrolyzer 110 are carried out of thermal oxidizer 140 by exhaust gas conduit 148 .
  • Pyrolyzer 110 and thermal oxidizer 140 can have any suitable dimensions, but preferably pyrolyzer 110 and thermal oxidizer 140 are at least 3, 5, 6, or 7 meters long, and have a cross sectional area of at least 8, 9, 10, or 12 m 2 . In most contemplated embodiments, the thermal oxidizer has a length within 20%, 15%, or more preferably 10% of the length of the pyrolyzer. Also, as shown in FIG. 2A , pyrolyzer 110 is distanced from thermal oxidizer 140 by less than 2, 1.5, 1 or even 0.5 meters, as shown by distance 132 .
  • pyrolyzer 110 and thermal oxidizer 140 have a piggyback configuration. It is contemplated that the piggyback configuration includes all situations where vertical line 170 (see FIG. 2A ) passes through portions of both pyrolyzer 110 and thermal oxidizer 140 . Thus, all configurations where thermal oxidizer 140 or pyrolyzer 110 lies directly over the other are considered piggybacked. Pyrolyzer 110 and thermal oxidizer 140 each have a bottom 116 and 146 respectively, and in preferred embodiments, the bottom of one is elevated at least 2, 3, 4, or even 5 meters relative to the bottom of the other. FIG.
  • 2B generally depicts an alternative piggyback configuration that is slightly askew, but one where the thermal oxidizer 240 is only partially disposed over the pyrolyzer 210 such that a vertical line 270 exists that passes through portions of both the pyrolyzer 210 and the thermal oxidizer 240 .
  • FIGS. 1 and 2 A also depict saddles 130 A that support pyrolyzer 110 and saddles 130 B disposed between pyrolyzer 110 and thermal oxidizer 140 .
  • the saddle 130 A, 130 B allow expansion and contraction of the chambers as temperature changes, particularly along its length, without causing the chambers to buckle such as by bending, warping, or crumpling.
  • Ceramic saddles are particularly desirably under the pyrolyzer 110 because they have a relatively low coefficient of thermal conductivity, and would tend to inhibit the flow of heat out of the pyrolyzer 110 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
US11/862,378 2006-06-01 2007-09-27 Piggybacked Pyrolyzer and Thermal Oxidizer Abandoned US20080072805A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/862,378 US20080072805A1 (en) 2006-06-01 2007-09-27 Piggybacked Pyrolyzer and Thermal Oxidizer
PCT/US2008/001020 WO2008153607A2 (fr) 2007-06-01 2008-01-23 Dispositif de pyrolyse et dispositif d'oxydation thermique superposés
US13/081,749 US20110271882A1 (en) 2006-06-01 2011-04-07 Piggybacked Pyrolyzer and Thermal Oxidizer With Enhanced Exhaust Gas Transfer

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US81038206P 2006-06-01 2006-06-01
US11/757,189 US20080127867A1 (en) 2006-06-01 2007-06-01 Production of Synthetic Gas From Organic Waste
US11/862,378 US20080072805A1 (en) 2006-06-01 2007-09-27 Piggybacked Pyrolyzer and Thermal Oxidizer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/757,189 Continuation-In-Part US20080127867A1 (en) 2006-06-01 2007-06-01 Production of Synthetic Gas From Organic Waste

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/081,749 Continuation-In-Part US20110271882A1 (en) 2006-06-01 2011-04-07 Piggybacked Pyrolyzer and Thermal Oxidizer With Enhanced Exhaust Gas Transfer

Publications (1)

Publication Number Publication Date
US20080072805A1 true US20080072805A1 (en) 2008-03-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/862,378 Abandoned US20080072805A1 (en) 2006-06-01 2007-09-27 Piggybacked Pyrolyzer and Thermal Oxidizer

Country Status (2)

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US (1) US20080072805A1 (fr)
WO (1) WO2007143190A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100326338A1 (en) * 2009-06-24 2010-12-30 Kimmo Ahola Device for Gasification and Combustion of Solid Fuel
US20110036280A1 (en) * 2009-08-12 2011-02-17 Bruce Toase Waste processing system
WO2012138892A1 (fr) * 2011-04-07 2012-10-11 International Environmental Solutions Corporation Pyrolyseur et oxydeur thermique superposés ayant un transfert de gaz d'échappement amélioré

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993322A (en) * 1908-03-16 1911-05-23 Henry L Doherty Gas producing and consuming apparatus.
US4084521A (en) * 1975-05-09 1978-04-18 Helma Lampl Method and apparatus for the pyrolysis of waste products
US4517906A (en) * 1983-08-30 1985-05-21 Zimpro Inc. Method and apparatus for controlling auxiliary fuel addition to a pyrolysis furnace
US4732092A (en) * 1985-09-30 1988-03-22 G.G.C., Inc. Pyrolysis and combustion apparatus
US4802424A (en) * 1988-05-26 1989-02-07 Nass, Inc. Furnace for hazardous materials
US5411714A (en) * 1992-04-06 1995-05-02 Wu; Arthur C. Thermal conversion pyrolysis reactor system
US5586855A (en) * 1993-11-23 1996-12-24 Eshleman; Roger D. Apparatus and method for infeeding batched materials
US5620487A (en) * 1992-12-30 1997-04-15 Combustion Engineering, Inc. High performance, multi-stage, pressurized, airblown, entrained flow coal gasifier system
US5653183A (en) * 1994-09-22 1997-08-05 Balboa Pacific Corporation Pyrolytic waste treatment system
US5826520A (en) * 1996-07-30 1998-10-27 Tempyrox Company, Inc. Apparatus and process for high temperature cleaning of organic contaminants from fragile parts in a self-inerting atmosphere at below the temperature of combustion
US20020195031A1 (en) * 2001-06-20 2002-12-26 Walker William C. Method and apparatus for treatment of waste
US20030010266A1 (en) * 2001-07-16 2003-01-16 Mike Ballantine System and method for thermally reducing solid and liquid waste and for recoverig waste heat
US20030221597A1 (en) * 2002-06-03 2003-12-04 Barba Peter David Process for the pyrolysis of medical waste and other waste materials
US6745707B2 (en) * 2000-09-29 2004-06-08 Tokyo Electric Power Company Of Tokyo Method of disposing of combustible materials
US6988453B2 (en) * 2003-08-21 2006-01-24 International Environmental Solutions Corporation Outlets for a pyrolytic waste treatment system
US7191714B2 (en) * 2003-08-21 2007-03-20 International Enviornmental Solutions Corporation Shaft seal for a pyrolytic waste treatment system
US20070113761A1 (en) * 2005-11-22 2007-05-24 Cameron Cole Pyrolytic waste treatment system having dual knife gate valves

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993322A (en) * 1908-03-16 1911-05-23 Henry L Doherty Gas producing and consuming apparatus.
US4084521A (en) * 1975-05-09 1978-04-18 Helma Lampl Method and apparatus for the pyrolysis of waste products
US4517906A (en) * 1983-08-30 1985-05-21 Zimpro Inc. Method and apparatus for controlling auxiliary fuel addition to a pyrolysis furnace
US4732092A (en) * 1985-09-30 1988-03-22 G.G.C., Inc. Pyrolysis and combustion apparatus
US4802424A (en) * 1988-05-26 1989-02-07 Nass, Inc. Furnace for hazardous materials
US5411714A (en) * 1992-04-06 1995-05-02 Wu; Arthur C. Thermal conversion pyrolysis reactor system
US5620487A (en) * 1992-12-30 1997-04-15 Combustion Engineering, Inc. High performance, multi-stage, pressurized, airblown, entrained flow coal gasifier system
US5586855A (en) * 1993-11-23 1996-12-24 Eshleman; Roger D. Apparatus and method for infeeding batched materials
US5653183A (en) * 1994-09-22 1997-08-05 Balboa Pacific Corporation Pyrolytic waste treatment system
US5826520A (en) * 1996-07-30 1998-10-27 Tempyrox Company, Inc. Apparatus and process for high temperature cleaning of organic contaminants from fragile parts in a self-inerting atmosphere at below the temperature of combustion
US6745707B2 (en) * 2000-09-29 2004-06-08 Tokyo Electric Power Company Of Tokyo Method of disposing of combustible materials
US6619214B2 (en) * 2001-06-20 2003-09-16 Karen Meyer Bertram Method and apparatus for treatment of waste
US20020195031A1 (en) * 2001-06-20 2002-12-26 Walker William C. Method and apparatus for treatment of waste
US20030010266A1 (en) * 2001-07-16 2003-01-16 Mike Ballantine System and method for thermally reducing solid and liquid waste and for recoverig waste heat
US6758150B2 (en) * 2001-07-16 2004-07-06 Energy Associates International, Llc System and method for thermally reducing solid and liquid waste and for recovering waste heat
US20030221597A1 (en) * 2002-06-03 2003-12-04 Barba Peter David Process for the pyrolysis of medical waste and other waste materials
US6701855B2 (en) * 2002-06-03 2004-03-09 Global Environmental Technologies, Llc Process for the pyrolysis of medical waste and other waste materials
US6988453B2 (en) * 2003-08-21 2006-01-24 International Environmental Solutions Corporation Outlets for a pyrolytic waste treatment system
US7000551B2 (en) * 2003-08-21 2006-02-21 International Environmental Solutions Corporation Chamber support for pyrolytic waste treatment system
US7044069B2 (en) * 2003-08-21 2006-05-16 International Environmental Solutions Corporation Multi retort pyrolytic waste treatment system
US7191714B2 (en) * 2003-08-21 2007-03-20 International Enviornmental Solutions Corporation Shaft seal for a pyrolytic waste treatment system
US20070113761A1 (en) * 2005-11-22 2007-05-24 Cameron Cole Pyrolytic waste treatment system having dual knife gate valves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100326338A1 (en) * 2009-06-24 2010-12-30 Kimmo Ahola Device for Gasification and Combustion of Solid Fuel
US8459192B2 (en) * 2009-06-24 2013-06-11 Kimmo Ahola Device for gasification and combustion of solid fuel
US20110036280A1 (en) * 2009-08-12 2011-02-17 Bruce Toase Waste processing system
WO2012138892A1 (fr) * 2011-04-07 2012-10-11 International Environmental Solutions Corporation Pyrolyseur et oxydeur thermique superposés ayant un transfert de gaz d'échappement amélioré

Also Published As

Publication number Publication date
WO2007143190A3 (fr) 2008-04-10
WO2007143190B1 (fr) 2008-05-29
WO2007143190A2 (fr) 2007-12-13

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AS Assignment

Owner name: INTERNATIONAL ENVIRONMENTAL SOLUTIONS CORPORATION,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:COLE, CAMERON;COLE, TOBY L.;WATTS, DAN;AND OTHERS;REEL/FRAME:021237/0882;SIGNING DATES FROM 20080229 TO 20080630

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION