WO2006076849A1 - Procede de nettoyage pour convertir un gaz residuaire en un gaz residuaire organique industriel pouvant etre utilise en circulation - Google Patents

Procede de nettoyage pour convertir un gaz residuaire en un gaz residuaire organique industriel pouvant etre utilise en circulation Download PDF

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Publication number
WO2006076849A1
WO2006076849A1 PCT/CN2005/002259 CN2005002259W WO2006076849A1 WO 2006076849 A1 WO2006076849 A1 WO 2006076849A1 CN 2005002259 W CN2005002259 W CN 2005002259W WO 2006076849 A1 WO2006076849 A1 WO 2006076849A1
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WO
WIPO (PCT)
Prior art keywords
waste gas
industrial
catalytic purification
organic waste
separation device
Prior art date
Application number
PCT/CN2005/002259
Other languages
English (en)
Chinese (zh)
Inventor
Lihui Zhong
Shenxiu Zhong
Original Assignee
Lihui Zhong
Shenxiu Zhong
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 Lihui Zhong, Shenxiu Zhong filed Critical Lihui Zhong
Publication of WO2006076849A1 publication Critical patent/WO2006076849A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds

Definitions

  • the present invention relates to a method for purifying industrial organic waste gas, and more particularly to a method for purifying industrial organic waste gas which converts purified exhaust gas into energy recycling. Background technique
  • the spray density of water is usually not less than 25T/m3 ⁇ 4, which not only consumes large water resources, but also produces A large amount of organic wastewater will also cause secondary pollution, so it will have to increase the investment and treatment cost of high water treatment.
  • diesel fuel absorption has higher efficiency, but a large amount of waste diesel oil is not easy to handle;
  • the adsorption method can recover toluene and diphenylbenzene.
  • concentration of exhaust gas is low, the method is not economical and the process is complicated.
  • the surface area of the activated carbon micropores is small, the adsorption and desorption speed and efficiency are higher. Low; Catalytic combustion method has been recognized as an effective and economical method for organic waste gas purification.
  • the concentration of exhaust gas that can be treated by this method is wide, and organic waste gas below 1 / 3 ⁇ 1 / 4 of the lower explosion limit can be used for catalytic combustion.
  • the method is eliminated, but the existing catalytic combustion method adopts a direct catalytic purification process, that is, the harmless substances discharged in industrial production and others Off-gas and the oxygen in the air at a predetermined temperature and flow rate through the catalytic direct catalytic bed furnace, oxidation reaction occurs on the catalyst surface should be generated odorless harmless carbon dioxide and water, the purpose of eliminating pollution. It adopts direct catalytic purification process without secondary pollution, and belongs to low temperature flameless oxidation reaction. It has no open flame, safe and reliable.
  • the present invention aims to solve the above problems, and provides a method for recovering industrial organic waste gas, which can convert pollutants into energy for recovery, and is used for compensating energy required for preheating of exhaust gas, thereby saving energy in a large amount, and There is no secondary pollution in the purification process, and the purification rate is high, and the exhaust gas is converted into a purification treatment method of industrial organic waste gas for energy recycling.
  • the present invention provides a method for purifying industrial organic waste gas which converts exhaust gas into energy recycling, and the method comprises the following steps:
  • the industrial waste gas after dust removal is separated and separated by a rotary separation device to separate the organic waste in the industrial waste gas, and the separated clean air is discharged from the discharge port;
  • step a the preferred number of dust removal is two, and the dust removal is dusting of the swirling plate and dust removal of the filter net.
  • the adsorption separation is performed on the active fiber adsorption layer in the rotary separation device, and the rotary separation device adsorbs the organic waste to the active fiber adsorption layer during the rotation, and the separated clean air is sent to the discharge by the outlet fan. The mouth is discharged.
  • the desorption of the organic waste is to send the hot air discharged from the catalytic purification device to the rotary separation device for heating and evaporation.
  • the concentration of industrial waste gas entering the catalytic purification device is lower than the explosion One quarter of the lower limit, this concentration is adjusted by the outlet fan and the desorption cycle fan.
  • the hot air discharged from the catalytic purification device is directly sent to the rotary separation device for desorption; when the outlet temperature of the catalytic purification device is higher than the desorption temperature, the hot air is sent to a heating occasion.
  • Heat exchanger When the outlet temperature of the catalytic purification device is lower than the desorption temperature, the hot air discharged from the catalytic purification device is directly sent to the rotary separation device for desorption; when the outlet temperature of the catalytic purification device is higher than the desorption temperature, the hot air is sent to a heating occasion. Heat exchanger.
  • step d part of the heat generated by the catalytic purification device is recycled through the heat exchanger in the outlet introduction device, and the other portion is sent to a heat exchanger to be heated by the second regulating valve for industrial production or purification treatment.
  • the heat source in the process is not limited to
  • the contribution of the present invention is that it effectively overcomes the drawbacks of the existing industrial organic waste gas purification treatment method and provides an economical, efficient and practical purification treatment method.
  • the invention organically combines the technical means of secondary dust removal, adsorption separation, catalytic purification, etc., and fully considers the utilization of the exhaust gas, and recycles the heat after catalytic purification, and is used for compensating for the preheating of the exhaust gas. Energy, a virtuous cycle, can greatly save energy such as electric energy required for preheating of exhaust gas.
  • the invention realizes the unification of exhaust gas purification and energy conservation, thereby achieving both environmental protection requirements and practical economic effects.
  • the method of the invention has no secondary pollution, the process is reliable, the system operation cost is low, and the purification efficiency is high.
  • Figure 1 is a schematic flow chart of the present invention.
  • Figure 2 is a schematic view showing the connection of the purification apparatus used in the present invention.
  • Figure 3 is a radial view of the rotary separation device. detailed description
  • the purification treatment method of industrial organic waste gas in container production is taken as an example, and the process flow and equipment thereof are shown in Fig. 1 and Fig. 2.
  • the first is to dedust the industrial waste gas.
  • the industrial waste gas generated in the spray booth 1 is sent to the cyclone dust collector 1 through the pipeline for the first dust removal.
  • the exhaust gas generated in the drying room 16 is sent to the pipeline from the spray booth through the first regulating valve 9 through the exhaust fan 8, and merges with the exhaust gas sent from the spray booth, and the merged exhaust gas is subjected to the second by the filter flame arrester 3. Secondary dust removal.
  • the dust-free Xia gas enters a rotary separation device 5 through the fire damper 4 for adsorption separation, and separates the organic waste in the industrial waste gas.
  • the rotary separation device is a rotatable adsorption wheel, as shown in Fig. 3, in the adsorption About three-quarters of the space inside the cylinder of the wheel 5 contains active fibers to form the adsorption zone 5A, and another about a quarter of the space 5B forms a desorption zone for desorbing the organic matter adsorbed by the adsorption zone. After passing through the adsorption wheel, the organic waste is adsorbed onto the active fiber to purify the exhaust gas, and the separated clean air is discharged from the discharge port 18 by the outlet fan 17.
  • the organic waste adsorbed to the separation device needs to be desorbed, and the desorption is sent to the rotary separation device for heating and evaporation, so that after catalytic combustion
  • the exhaust gas becomes a heat source for desorption.
  • the desorbed high-concentration exhaust gas is sent to the catalytic purification device 7 through the desorption circulating fan 6 for catalytic combustion (ie, low-temperature oxidation), and the catalytic purification device 7 adopts the applicant's patent number 92209439.
  • X entitled "Combined Industrial Exhaust Catalysis
  • the high-concentration exhaust gas is converted into carbon dioxide (C0 2 ) and water (H 2 0 ) by catalytic combustion.
  • the concentration of industrial waste gas entering the catalytic purification device should be controlled, and the concentration of the industrial gas should be controlled to be less than one quarter of the lower explosion limit (the lower explosion limit of different exhaust gases is different) to prevent explosion, and the concentration is adjusted.
  • the air volume of the outlet fan and the desorption cycle fan is adjusted.
  • a large amount of heat is generated after the catalytic reaction in the catalytic purification device.
  • An important feature of the present invention is that the generated heat is recycled.
  • a part of the heat generated by the catalytic reaction is introduced into the purification furnace through the pipeline through the outlet of the catalytic purification furnace.
  • the heat exchanger inside is used for preheating the exhaust gas entering the catalytic purification furnace to ensure that the exhaust gas reaches the light-off temperature, so that the catalytic reaction process is continuous.
  • Another portion of the heat is sent to the heat exchanger 15 or the adsorption wheel 5 in the oven 16 for use as a heat source for drying or for desorption of organic waste on the adsorption wheel.
  • the hot air discharged from the catalytic purification device is directly sent to the rotary separation device for desorption; when the outlet temperature of the catalytic purification device is higher than the desorption temperature, the hot air is sent to the heat exchanger 15 in the drying chamber 16.
  • the method of the invention is carried out under automatic control, and the control method can adopt a mature industrial control method, the first regulating valve 9, the desorption valve 10, the second regulating valve 11, the bypass valve 12 and the outlet fan in the pipeline. 17.
  • the desorption cycle fan 6 is controlled.

Abstract

La présente invention concerne un procédé de nettoyage pour convertir un gaz résiduaire en un gaz résiduaire organique industriel pouvant être utilisé en circulation qui comprend les étapes suivantes : a) l’élimination de poussières à partir du gaz résiduaire industriel au moins une fois avec un dispositif éliminant les poussières ; b) la séparation des déchets organiques à partir dudit gaz par adsorption séparant la poussière enlevée dudit gaz au moyen d’un dispositif de séparation rotatif, en évacuant le gaz propre séparé par une sortie ; c) la désorption des déchets organiques adsorbés dans le dispositif de séparation et l’introduction du gaz résiduaire à concentration élevée désorbé dans un appareil de purification catalytique pour le purifier catalytiquement en CO2 et en eau ; d) le recyclage d’une partie de la chaleur générée par l’appareil de purification catalytique pour lui-même et la libération de l’autre partie de la chaleur vers un autre échangeur de chaleur en tant que source de chaleur pour la production industrielle ou le procédé de nettoyage. La présente invention est caractérisée en ce qu’elle peut nettoyer le gaz résiduaire organique industriel et simultanément convertir le polluant en énergie à récupérer pour répondre au besoin en énergie lors du préchauffage du gaz résiduaire. En conséquence, elle peut économiser beaucoup d’énergie, n’apporte pas de pollution secondaire dans le procédé de nettoyage et a pour résultat une efficacité élevée de nettoyage.
PCT/CN2005/002259 2005-01-21 2005-12-20 Procede de nettoyage pour convertir un gaz residuaire en un gaz residuaire organique industriel pouvant etre utilise en circulation WO2006076849A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2005100329556A CN100342949C (zh) 2005-01-21 2005-01-21 将废气转化为能源循环利用的工业有机废气的净化处理方法
CN200510032955.6 2005-01-21

Publications (1)

Publication Number Publication Date
WO2006076849A1 true WO2006076849A1 (fr) 2006-07-27

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PCT/CN2005/002259 WO2006076849A1 (fr) 2005-01-21 2005-12-20 Procede de nettoyage pour convertir un gaz residuaire en un gaz residuaire organique industriel pouvant etre utilise en circulation

Country Status (2)

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CN (1) CN100342949C (fr)
WO (1) WO2006076849A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634065A (zh) * 2015-01-12 2015-05-20 江苏苏青水处理工程集团有限公司 一种处理离子树脂生产工艺产生的有机废气的系统及其工艺
CN108273358A (zh) * 2018-04-11 2018-07-13 山东亚泰新材料科技有限公司 有机废气处理系统及其处理方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104096446A (zh) * 2014-07-28 2014-10-15 广西梧州龙鱼漆业有限公司 油漆废气的处理方法
CN108579319A (zh) * 2018-04-12 2018-09-28 江西科领爱尔环保设备有限公司 一种具有脱附废气的烘干加热方法及装置
CN112973442B (zh) * 2021-04-29 2021-08-03 东营金川水土环境工程有限公司 一种分离转化和消解二氧化碳气体的系统及方法

Citations (4)

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JPH06226040A (ja) * 1992-11-25 1994-08-16 Air Prod And Chem Inc 気体流れからの低濃度被酸化性有機汚染物の除去ならびに破壊の方法
CN2175637Y (zh) * 1993-08-26 1994-08-31 中国人民解放军防化研究院技术开发部一部 一种处理有机废气的空气净化装置
JPH1043540A (ja) * 1996-07-31 1998-02-17 Seibu Giken:Kk 有機ガス吸着除去用シートおよび有機ガス吸着除去素子
CN2537454Y (zh) * 2001-12-27 2003-02-26 中国人民解放军63971部队 有机废气净化处理系统

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CN2340495Y (zh) * 1998-05-19 1999-09-29 中国科学院山西煤炭化学研究所 一种新型工业有机废气处理装置
CN1112228C (zh) * 2000-07-20 2003-06-25 中国石油化工集团公司 含水蒸汽有机废气的处理方法

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH06226040A (ja) * 1992-11-25 1994-08-16 Air Prod And Chem Inc 気体流れからの低濃度被酸化性有機汚染物の除去ならびに破壊の方法
CN2175637Y (zh) * 1993-08-26 1994-08-31 中国人民解放军防化研究院技术开发部一部 一种处理有机废气的空气净化装置
JPH1043540A (ja) * 1996-07-31 1998-02-17 Seibu Giken:Kk 有機ガス吸着除去用シートおよび有機ガス吸着除去素子
CN2537454Y (zh) * 2001-12-27 2003-02-26 中国人民解放军63971部队 有机废气净化处理系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634065A (zh) * 2015-01-12 2015-05-20 江苏苏青水处理工程集团有限公司 一种处理离子树脂生产工艺产生的有机废气的系统及其工艺
CN108273358A (zh) * 2018-04-11 2018-07-13 山东亚泰新材料科技有限公司 有机废气处理系统及其处理方法
CN108273358B (zh) * 2018-04-11 2023-10-31 山东亚泰新材料科技有限公司 有机废气处理系统及其处理方法

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CN1679999A (zh) 2005-10-12

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