WO2005064237A1 - Systeme et procede faisant appel a une flamme d'hydrogene pour la destruction de cov et de composes odorants - Google Patents

Systeme et procede faisant appel a une flamme d'hydrogene pour la destruction de cov et de composes odorants Download PDF

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Publication number
WO2005064237A1
WO2005064237A1 PCT/SG2004/000408 SG2004000408W WO2005064237A1 WO 2005064237 A1 WO2005064237 A1 WO 2005064237A1 SG 2004000408 W SG2004000408 W SG 2004000408W WO 2005064237 A1 WO2005064237 A1 WO 2005064237A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydrogen
flame
exhaust
vocs
mixed diffusion
Prior art date
Application number
PCT/SG2004/000408
Other languages
English (en)
Inventor
Tee David Liang
Tuti Mariana Lim
Joo Hwa Tay
Dong Fei Li
Original Assignee
Nanyang Technological University
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 Nanyang Technological University filed Critical Nanyang Technological University
Priority to US10/585,008 priority Critical patent/US20070154854A1/en
Priority to JP2006546931A priority patent/JP2007518551A/ja
Publication of WO2005064237A1 publication Critical patent/WO2005064237A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99001—Cold flame combustion or flameless oxidation processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21003—Burners specially adapted for a particular use for heating or re-burning air or gas in a duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07004—Injecting liquid or solid materials releasing oxygen, e.g. perchlorate, nitrate, peroxide, and chlorate compounds, or appropriate mixtures thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07005—Injecting pure oxygen or oxygen enriched air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07009—Injection of steam into the combustion chamber
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates in general to the destruction of odorous compounds from industrial exhausts. More particularly, the invention relates to a system and method for using cool hydrogen flame for destruction of odorous compounds.
  • VOCs Volatile Organic Compounds
  • odorous compounds are often sulfur and nitrogen containing and some examples of which are dimethyl sulfide (DMS) and dimethyl sulfoxide (DMSO).
  • DMS and DMSO are used as organic solvents in the semi-conductor industry. Unfortunately, they are difficult to treat with conventional methods, which can also be costly.
  • One of the present methods used to contain and control DMS and DMSO is by activated carbon adsorption which is also costly and is merely transferring the pollutant from the gaseous phase into solid form.
  • Other conventional methods may be simply to incinerate these offending compounds.
  • This conventional treatment system requires additional space for installation of new equipment coupled to existing exhaust systems. The costs for such additional equipment may be quite high. Furthermore, extensive modifications to the existing exhaust systems are usually required for such treatment to be integrated properly.
  • the present invention seeks to provide a system and method for using cool hydrogen flame for destruction of VOCs and odorous compounds.
  • the present invention provides, a method for using cool hydrogen flame for destruction of VOCs and odorous compounds in an exhaust stream, comprising the steps: producing a hydrogen surface-mixed diffusion flame; and exposing the hydrogen surface-mixed diffusion flame to the exhaust stream; wherein the hydrogen surface mixed diffusion flame further produces free radicals for destroying the VOCs and odorous compounds.
  • FIG. 1 illustrates a system in accordance with the present invention
  • FIG. 2 A illustrates an alternative arrangement of FIG.l ;
  • FIG. 2B illustrates another alternative arrangement of FIG. 1;
  • FIG. 3 illustrates a further alternative arrangement of FIG. 1
  • FIG. 4 illustrates another implementation using a flame spreader of FIG. 1;
  • FIG. 5 illustrates a flowchart of a method in accordance with the present invention.
  • a system 10 for using cool hydrogen flame for destruction of VOCs and odorous compounds comprises an existing exhaust system 6 for an industrial process or a factory 5.
  • the existing exhaust system 6 comprises at least an exhaust duct or a chimney 8 for exhaust gases 12.
  • the exhaust gases 12 may comprise of odorous compounds such as DMS, DMSO and other VOCs.
  • the system 10 further comprises at least one burner nozzle 20 for generating a configurable hydrogen surface-mixed diffusion flame (CHSMDFs) 22.
  • CHSMDFs configurable hydrogen surface-mixed diffusion flame
  • the at least one burner nozzle 20 is situated inside the exhaust duct or chimney 8 of the existing exhaust system 6.
  • the burner nozzle 20 is also situated such that the burner nozzle 20 is substantially in the path of the exhaust gases 12.
  • the flame from the burner nozzle 20 can be described to be gentle, "cool” and clean burning.
  • the CHSMDF 22 is produced by burning pure hydrogen in either pure oxygen or purified air with or without oxygen enrichment. However, the hydrogen and oxygen are not pre-mixed before being ignited. Instead, the burner nozzle 20 may be of a tube in orifice design. That is to say, a main nozzle ejecting oxygen gas, and a central nozzle positioned inside the main nozzle ejecting hydrogen gas.
  • CHSMDF configurable surface-mixed diffusion flame
  • the burner nozzle 20 may not necessarily be limited to the tube in orifice design and may also be a slot type burner nozzle. To ensure complete combustion of the hydrogen gas, an excess of oxygen is ejected from the burner nozzle 20.
  • the flame length and flame front of the CHSMDF 22 may be configurable by adjusting the pressure and rate of flow of the hydrogen and oxygen gases.
  • the hydrogen surface mixed diffusion flame is advantageously "cool” enough not to require additional cooling systems and will not substantially raise the temperature of the exhaust gases.
  • the temperature of the exhaust gases after exposure to the CHSMDF 22 exhibited increases of less than 150°C.
  • the absence of soot during combustion also significantly reduces radiative heat release by hydrogen flames further making it a "cool” flame.
  • the main by-product from this hydrogen flame is water and free radicals.
  • FIG.2B an alternative arrangement is shown whereby the throat of the chimney 8 is substantially reduced by the introduction of a venturi 40 into the throat of the chimney 8. This reduces the area of the throat of the chimney 8 such that a CHSMDF 22 with a relatively small flame front is still able to produce enough radicals to destroy the odorous compounds in the exhaust gases 12. There may be a change in pressure due to the reduction in area caused by the venturi 40, but may be negligible depending on the flow of the exhaust gases 12.
  • a reaction chamber 45 may be installed in line with the ducts or pipes leading into the chimney 8.
  • the reaction chamber 45 comprises a chamber 42 for housing a plurality of burner nozzles 20.
  • the plurality of burner nozzles.20 are arranged such that the plurality of CHSMDF 22 produced is in the path of the exhaust gases 12 as they pass through the ducts.
  • the apparatus 10 of the present invention can further comprise a plurality of gas nozzles and a plurality of spray nozzles for the introduction of ozone gas or hydrogen peroxide into the chimney 8 to enhance the production of free radicals.
  • the method 500 can also further comprise additional steps of introducing or spraying ozone gas or hydrogen peroxide into the chimney 8.
  • Hydrogen peroxide may be introduced into the exhaust duct or chimney 8 in the form of fine mists by at least one spray nozzle.
  • the spray nozzle is preferably located near the burner nozzles 20.
  • the spray nozzles could also be arranged such that the spray nozzles are co-axial to the burner nozzles 20.
  • the fine mist of hydrogen peroxide directed into the exhaust duct or chimney 8 results in more free radicals being formed as the hydrogen peroxide dissociates due to the heat generated by the CHSMDF 22. Any water formed as a result of the dissociation of the hydrogen peroxide is converted into steam by the CHSMDF 22 and exits the exhaust duct or chimney together with the exhaust gases 12.
  • the method 500 in accordance with the present invention further comprises an additional step of spraying a fine mist of hydrogen peroxide into the exhaust duct or chimney.
  • This spraying of fine mist of hydrogen peroxide occurs simultaneously with the providing of the CHSMDF 22.
  • the introduction of steam into the chimney 8 may also further assist in the destruction of the odorous compounds. Steam may also be introduced into the chimney 8 by way of the spray nozzle, but may be situated away from the burner nozzles 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Incineration Of Waste (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne un système d'utilisation de flamme d'hydrogène froide pour la destruction de COV et de composés odorants. Ledit système comprend un système d'échappement existant pour un procédé industriel ou une usine. Le système d'échappement existant comprend au moins un conduit d'échappement ou une cheminée pour gaz d'échappement. Les gaz d'échappement peuvent comprendre des composés odorants tels que du DMS, du DMSO et autres COV. Le système comprend également au moins un injecteur de brûleur permettant de générer une flamme de diffusion d'hydrogène mélangé en surface, configurable. Le sous-produit principal de ladite flamme d'hydrogène est de l'eau et des radicaux libres. Lesdits radicaux libres produits au cours de la combustion de l'hydrogène sont extrêmement réactifs et hautement oxydatifs dans la nature, notamment les radicaux hydroxyles, Ainsi, des composés odorants tels que des COV, du DMS et du DMSO peuvent être facilement détruits par lesdits radicaux libres produits au cours de la combustion de l'hydrogène.
PCT/SG2004/000408 2003-12-29 2004-12-13 Systeme et procede faisant appel a une flamme d'hydrogene pour la destruction de cov et de composes odorants WO2005064237A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/585,008 US20070154854A1 (en) 2003-12-29 2004-12-13 System and method using cool hydrogen flame for destruction of vocs and odorous compounds
JP2006546931A JP2007518551A (ja) 2003-12-29 2004-12-13 揮発性の有機化合物（ｖｏｃｓ）および臭気物質の分解のために冷水素炎を使用するシステムおよび方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG200307735-1 2003-12-29
SG200307735 2003-12-29

Publications (1)

Publication Number Publication Date
WO2005064237A1 true WO2005064237A1 (fr) 2005-07-14

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PCT/SG2004/000408 WO2005064237A1 (fr) 2003-12-29 2004-12-13 Systeme et procede faisant appel a une flamme d'hydrogene pour la destruction de cov et de composes odorants

Country Status (3)

Country Link
US (1) US20070154854A1 (fr)
JP (1) JP2007518551A (fr)
WO (1) WO2005064237A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010098677A3 (fr) * 2009-02-27 2011-05-05 Energy Conversion Technology As Appareil de nettoyage de gaz d'échappement et procédé de nettoyage de gaz d'échappement
EP2952808A1 (fr) * 2014-05-19 2015-12-09 Hermanus Johannus Theodorus Maria Taris Dispositif de nettoyage de gaz d'échappement et son procédé d'utilisation
CN112760140A (zh) * 2021-02-22 2021-05-07 重庆大学 一种基于冷焰的燃料低温部分氧化重整系统及其工作方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008194683A (ja) * 2007-01-18 2008-08-28 Shiga Univ Of Medical Science 揮発性化合物の分解方法
US20090133854A1 (en) * 2007-11-27 2009-05-28 Bruce Carlyle Johnson Flameless thermal oxidation apparatus and methods
WO2011084866A2 (fr) * 2010-01-07 2011-07-14 Dresser-Rand Company Système de préchauffage de catalyseur pour gaz d'échappement et procédé associé
DE102012017107A1 (de) * 2012-08-28 2014-03-06 Linde Aktiengesellschaft Erwärmung eines Prozessabgases
CN104923060B (zh) * 2015-04-21 2017-05-03 江苏大学 一种基于自由基高级氧化的VOCs脱除方法

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Publication number Priority date Publication date Assignee Title
US5078064A (en) * 1990-12-07 1992-01-07 Consolidated Natural Gas Service Company, Inc. Apparatus and method of lowering NOx emissions using diffusion processes
US20020041836A1 (en) * 2000-10-02 2002-04-11 Tetsuo Komai Combustion type waste gas treatment system
EP1205707A2 (fr) * 2000-11-01 2002-05-15 The BOC Group plc Elimination des substances nocives d'écoulements gazeux

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923956A (en) * 1972-11-13 1975-12-02 Bowman Enterprises Inc Smokeless anti-toxic burner method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078064A (en) * 1990-12-07 1992-01-07 Consolidated Natural Gas Service Company, Inc. Apparatus and method of lowering NOx emissions using diffusion processes
US5078064B1 (en) * 1990-12-07 1999-05-18 Gas Res Inst Apparatus and method of lowering no emissions using diffusion processes
US20020041836A1 (en) * 2000-10-02 2002-04-11 Tetsuo Komai Combustion type waste gas treatment system
EP1205707A2 (fr) * 2000-11-01 2002-05-15 The BOC Group plc Elimination des substances nocives d'écoulements gazeux

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010098677A3 (fr) * 2009-02-27 2011-05-05 Energy Conversion Technology As Appareil de nettoyage de gaz d'échappement et procédé de nettoyage de gaz d'échappement
EP2952808A1 (fr) * 2014-05-19 2015-12-09 Hermanus Johannus Theodorus Maria Taris Dispositif de nettoyage de gaz d'échappement et son procédé d'utilisation
CN112760140A (zh) * 2021-02-22 2021-05-07 重庆大学 一种基于冷焰的燃料低温部分氧化重整系统及其工作方法
CN112760140B (zh) * 2021-02-22 2022-03-08 重庆大学 一种基于冷焰的燃料低温部分氧化重整系统及其工作方法

Also Published As

Publication number Publication date
US20070154854A1 (en) 2007-07-05
JP2007518551A (ja) 2007-07-12

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