WO2018036562A1 - Switching concentration-type regenerative catalytic combustion system for organic waste gas treatment - Google Patents

Switching concentration-type regenerative catalytic combustion system for organic waste gas treatment Download PDF

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Publication number
WO2018036562A1
WO2018036562A1 PCT/CN2017/099141 CN2017099141W WO2018036562A1 WO 2018036562 A1 WO2018036562 A1 WO 2018036562A1 CN 2017099141 W CN2017099141 W CN 2017099141W WO 2018036562 A1 WO2018036562 A1 WO 2018036562A1
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adsorption module
regenerative heat
desorption
catalytic combustion
heat exchanger
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PCT/CN2017/099141
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French (fr)
Chinese (zh)
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冯伟铭
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中山市德昭明润环保通风工程有限公司
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Publication of WO2018036562A1 publication Critical patent/WO2018036562A1/en

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    • 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
    • F23G5/44—Details; Accessories
    • 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
    • F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
    • 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
    • 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
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention relates to an exhaust gas treatment system, in particular to a switching concentrated heat storage catalytic combustion organic waste gas treatment system.
  • the painting process is widely used in machinery, electrical equipment, home appliances, automobiles, ships, furniture and other industries.
  • the paint raw material-coating consists of non-volatile matter and volatile matter, wherein the non-volatile matter includes a film-forming substance and an auxiliary film-forming substance, and the volatile matter refers to a solvent and a diluent (mainly mainly xylene).
  • the organic gas in the paint exhaust gas comes from the volatilization of the solvent and the diluent.
  • the organic solvent does not adhere to the surface of the paint spray with the paint, and all of the organic waste gas is released during the painting and drying curing process.
  • the amount of xylene gas volatilized during the painting process accounts for about 30% of the amount of the diluent, and another 70% is volatilized during the drying process.
  • the two-phase suspension formed by the coating and solvent atomization during the painting process will escape into the surrounding air and will seriously pollute the air.
  • the industry mainly adopts condensation, adsorption-vacuum desorption, absorption, combustion, membrane separation and other treatment methods.
  • the existing organic waste gas treatment means is single, or the treatment effect is very poor, or it needs to consume most of the energy and increase the treatment cost. .
  • the object of the present invention is to provide a switchable concentrated thermal storage catalysis that can completely eliminate volatile organic compound (VOC) gas emission pollution discharged from a paint shop such as a furniture factory in view of the above-mentioned deficiencies of the prior art. Burning organic waste gas treatment system.
  • VOC volatile organic compound
  • a switching concentrated heat storage catalytic combustion organic waste gas treatment system comprising a desulfurization and denitrification treatment device, a switching type concentration desorption device, and a thermal storage catalytic combustion device, the desulfurization and denitrification
  • An outlet of the processing device is coupled to an inlet of the switched concentrating desorption device, the switched concentrating desorbing device comprising a first adsorption module and a second adsorption module

Abstract

A switching concentration-type regenerative catalytic combustion system for organic waste gas treatment, comprising a desulphurization and denitrification treatment device, a switching-type concentration desorption device and a heat accumulation catalytic combustion device. An outlet of the desulphurization and denitrification treatment device is connected to an inlet of the switching-type concentration desorption device; a purification discharge port of the switching-type concentration desorption device is directly connected to a chimney; a concentration discharge port of the switching-type concentration desorption device is connected to the regenerative catalytic combustion device through a pipeline; and the desorption inlets of a first adsorption module and a second adsorption module are connected to a desorption gas intake pipe mounted with a valve. The system can effectively purify an organic waste gas, has an obvious energy-saving effect, and no longer pollutes the environment.

Description

切换浓缩式蓄热催化燃烧有机废气处理系统Switching concentrated heat storage catalytic combustion organic waste gas treatment system 【技术领域】[Technical Field]
本发明涉及一种废气处理系统，特别涉及一种切换浓缩式蓄热催化燃烧有机废气处理系统。The invention relates to an exhaust gas treatment system, in particular to a switching concentrated heat storage catalytic combustion organic waste gas treatment system.
【背景技术】【Background technique】
喷漆工艺广泛应用于机械、电气设备、家电、汽车、船舶、家具等行业。喷漆原料一涂料由不挥发份和挥发份组成，其中的不挥发份包括成膜物质和辅助成膜物质，挥发份指溶剂和稀释剂(主要以二甲苯为主)。喷漆废气中的有机气体来自溶剂和稀释剂的挥发，有机溶剂不会随油漆附着在喷漆物表面，在喷漆和烘干固化过程将全部释放形成有机废气。一般的，在喷漆过程挥发的二甲苯废气量约占稀释剂用量的30％，另有70％在烘干过程挥发。喷漆涂装作业中涂料和溶剂雾化后形成的二相悬浮物逸散到周围的空气中，将会严重污染空气。The painting process is widely used in machinery, electrical equipment, home appliances, automobiles, ships, furniture and other industries. The paint raw material-coating consists of non-volatile matter and volatile matter, wherein the non-volatile matter includes a film-forming substance and an auxiliary film-forming substance, and the volatile matter refers to a solvent and a diluent (mainly mainly xylene). The organic gas in the paint exhaust gas comes from the volatilization of the solvent and the diluent. The organic solvent does not adhere to the surface of the paint spray with the paint, and all of the organic waste gas is released during the painting and drying curing process. Generally, the amount of xylene gas volatilized during the painting process accounts for about 30% of the amount of the diluent, and another 70% is volatilized during the drying process. The two-phase suspension formed by the coating and solvent atomization during the painting process will escape into the surrounding air and will seriously pollute the air.
目前行业内主要采用冷凝法、吸附-真空脱附后吸收法、燃烧法、膜分离等治理手段，现有有机废气处理手段单一，要么处理效果很差，要么需要消耗大部分能源，提高处理成本。At present, the industry mainly adopts condensation, adsorption-vacuum desorption, absorption, combustion, membrane separation and other treatment methods. The existing organic waste gas treatment means is single, or the treatment effect is very poor, or it needs to consume most of the energy and increase the treatment cost. .
【发明内容】[Summary of the Invention]
本发明的目的是针对上述现技术存在的不足，提供一种可以彻底消除家具厂等喷涂车间排放的挥发性有机化合物(VOC)气体排放污染，节能高效且更为环保的切换浓缩式蓄热催化燃烧有机废气处理系统。The object of the present invention is to provide a switchable concentrated thermal storage catalysis that can completely eliminate volatile organic compound (VOC) gas emission pollution discharged from a paint shop such as a furniture factory in view of the above-mentioned deficiencies of the prior art. Burning organic waste gas treatment system.
为了实现上述目的，本发明是这样实现的：一种切换浓缩式蓄热催化燃烧有机废气处理系统，包括脱硫脱氮处理装置、切换式浓缩解吸装置和蓄热催化燃烧装置，所述脱硫脱氮处理装置的出口与所述切换式浓缩解吸装置的进口连接，所述切换式浓缩解吸装置包括第一吸附模块和第二吸附模块，所 In order to achieve the above object, the present invention is achieved by a switching concentrated heat storage catalytic combustion organic waste gas treatment system, comprising a desulfurization and denitrification treatment device, a switching type concentration desorption device, and a thermal storage catalytic combustion device, the desulfurization and denitrification An outlet of the processing device is coupled to an inlet of the switched concentrating desorption device, the switched concentrating desorbing device comprising a first adsorption module and a second adsorption module

Claims (1)

  1. 述第一吸附模块和第二吸附模块上分别设置进气口、净化排放口、解吸进口和浓缩排出口，所述进气口与所述脱硫脱氮处理装置的出口连接，所述净化排放口直接与烟囱连接，将净化后符合排放标准的气体通过烟囱排放；所述第一吸附模块和第二吸附模块的浓缩排出口通过管道与蓄热催化燃烧装置连接；所述第一吸附模块和第二吸附模块的解吸进口连接解吸进气管，在所述解吸进气管上安装阀门。An air inlet, a purification discharge port, a desorption inlet and a concentrated discharge port are respectively disposed on the first adsorption module and the second adsorption module, and the air inlet is connected to an outlet of the desulfurization and denitrification treatment device, and the purification discharge port Directly connected to the chimney, the purified gas that meets the emission standard is discharged through the chimney; the concentrated adsorption outlets of the first adsorption module and the second adsorption module are connected to the thermal storage catalytic combustion device through a pipeline; the first adsorption module and the first The desorption inlet of the two adsorption module is connected to desorb the intake pipe, and a valve is installed on the desorption intake pipe.
    所述蓄热催化燃烧装置的排放口通过管道设置一分支管分别与所述第一吸附模块和第二吸附模块的解吸进口连接，将处理后的排放气体部分用于与解吸气体混合对第一吸附模块和第二吸附模块解吸。通过引用部分已处理彻底的烟气与空气混合来解吸附，可以减少废气排放，及余热回收利用，节约能源。空气与催化处理后的烟气的体积比为3∶1-3，优选的，所述空气与烟气的体积比为3∶1。The discharge port of the thermal storage catalytic combustion device is connected to the desorption inlets of the first adsorption module and the second adsorption module through a branch pipe, and the treated exhaust gas portion is used for mixing with the desorbed gas. The adsorption module and the second adsorption module are desorbed. By decomposing some of the thoroughly treated flue gas mixed with air, it can reduce exhaust emissions, waste heat recovery and energy conservation. The volume ratio of air to catalytically treated flue gas is from 3:1 to 3, preferably, the volume ratio of air to flue gas is 3:1.
    所述蓄热催化燃烧装置的排放口通过管道设置另一分支管分别与第一吸附模块和第二吸附模块上的进气口连接，用于将催化处理浓缩废气通过第一吸附模块和第二吸附模块吸附后排放，保证处理效果。The discharge port of the thermal storage catalytic combustion device is disposed through the pipeline, and the other branch pipe is respectively connected to the air inlets of the first adsorption module and the second adsorption module, and is configured to pass the catalytically treated concentrated exhaust gas through the first adsorption module and the second The adsorption module is discharged after adsorption to ensure the treatment effect.
    所述蓄热催化燃烧装置包括燃烧室，燃烧嘴和至少两个蓄热式换热器，所述燃烧嘴安装于燃烧室内，且与燃料输送管连接，两个所述蓄热式换热器分别安装于所述燃烧室一端侧壁上，在所述蓄热式换热器与燃烧室内侧壁的连接口处设置催化剂触网，所述蓄热式换热器一端用于连接进气管和排放管，另一端与所述燃烧室内腔相通；所述浓缩排出口通过管道分别与所述蓄热催化燃烧装置上的两个蓄热式换热器连接，所述蓄热式换热器的排风口连接烟气排放管，所述烟气排放管通过气体分配箱与烟囱连接；所述气体分配箱分别与所述第一吸附模块和第二吸附模块的解吸进口连接。废气排出管中含有挥发性有机化合物的气体从先从其中一个蓄热式换热器的进风口进入燃烧室燃烧分解，然后从第二个蓄热式换热器的排风口输出并通过烟气排放管排放到烟囱中，高温烟气同时将经过的蓄热式换热器加热；然后通过阀门控制切换，在第二个蓄热式换热器的进风口进气，在所述蓄热式换热器中被加热后在燃烧室燃烧，然后通过另一蓄热式换热器输出到烟气排放管排放的烟囱或者解吸进口中。 The thermal storage catalytic combustion device comprises a combustion chamber, a combustion nozzle and at least two regenerative heat exchangers, the combustion nozzle being installed in the combustion chamber and connected to the fuel delivery pipe, and the two regenerative heat exchangers Separatingly mounted on one end wall of the combustion chamber, a catalyst contact net is disposed at a connection port of the regenerative heat exchanger and the inner side wall of the combustion chamber, and one end of the regenerative heat exchanger is used for connecting the intake pipe and a discharge pipe having the other end communicating with the inner cavity of the combustion chamber; the concentrated discharge port being respectively connected to two regenerative heat exchangers on the regenerative catalytic combustion device through a pipe, the regenerative heat exchanger The exhaust vent is connected to the flue gas discharge pipe, and the flue gas discharge pipe is connected to the chimney through a gas distribution box; the gas distribution tank is respectively connected to the desorption inlets of the first adsorption module and the second adsorption module. The gas containing volatile organic compounds in the exhaust gas discharge pipe is first burned into the combustion chamber from the air inlet of one of the regenerative heat exchangers, and then is discharged from the exhaust port of the second regenerative heat exchanger and passes through the smoke. The gas discharge pipe is discharged into the chimney, and the high-temperature flue gas simultaneously heats the regenerative heat exchanger that passes through; then, through the valve control switching, the intake air is taken in the air inlet of the second regenerative heat exchanger, and the heat storage is performed The heat exchanger is heated and burned in the combustion chamber, and then output to the chimney or desorption inlet of the flue gas discharge pipe through another regenerative heat exchanger.
PCT/CN2017/099141 2016-08-26 2017-08-25 Switching concentration-type regenerative catalytic combustion system for organic waste gas treatment WO2018036562A1 (en)

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CN107265557B (en) * 2017-06-20 2020-10-23 天津大学 Series-parallel combined oily sewage purification system based on photocatalysis and electrolysis technology
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