WO2018137691A1 - Absorption device for low-pressure industrial fugitive emission gas and absorption method therefor - Google Patents

Absorption device for low-pressure industrial fugitive emission gas and absorption method therefor Download PDF

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Publication number
WO2018137691A1
WO2018137691A1 PCT/CN2018/074209 CN2018074209W WO2018137691A1 WO 2018137691 A1 WO2018137691 A1 WO 2018137691A1 CN 2018074209 W CN2018074209 W CN 2018074209W WO 2018137691 A1 WO2018137691 A1 WO 2018137691A1
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Prior art keywords
gas
pressure
low
industrial
fugitive
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PCT/CN2018/074209
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French (fr)
Chinese (zh)
Inventor
马良
付鹏波
肖翔
杨雪晶
董雷军
赵智煌
杨根长
吕文杰
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Luoyang Jianguang Special Equipment Co Ltd
East China University of Science and Technology
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Luoyang Jianguang Special Equipment Co Ltd
East China University of Science and Technology
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Publication of WO2018137691A1 publication Critical patent/WO2018137691A1/en
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • 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
    • B01D53/002—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 condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/16—Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • 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
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    • B01D53/14—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 absorption
    • B01D53/1406—Multiple stage absorption
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    • B01D53/18—Absorbing units; Liquid distributors therefor
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    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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    • C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C—CHEMISTRY; METALLURGY
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    • C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
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    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
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Definitions

  • the invention belongs to the field of petrochemical industry and environmental protection, and relates to an industrial low-pressure dissipative gas absorption device, which mainly solves the problem of industrial low-pressure escape gas purification.
  • the process heating furnace particles ⁇ 20mg/m 3 , sulfur dioxide ⁇ 50mg/m 3 , nitrogen oxides ⁇ 100mg/m 3 , in the wastewater treatment plant
  • the odor concentration of unorganized emission sources in the standard value of the foul odor pollutants should be less than 30.
  • the exhaust gas purification device is a device that purifies the exhaust gas to meet the discharge standard.
  • various exhaust gas purification devices on the market, but their purification effect is not good, the efficiency is low, the equipment is numerous, and some do not reach the emission.
  • the standard gas is also discharged into the air, thereby causing certain pollution to the air and failing to meet the requirements of environmental protection.
  • the present invention provides an industrial low-pressure escape gas absorption device, which can effectively solve the above problems.
  • An industrial low pressure fugitive gas absorption method is:
  • the low-pressure fugitive gas enters the top inlet of the evacuation cooler, and the industrial water is also delivered to the top inlet.
  • the evacuation cooler pressurizes the low-pressure fugitive gas with a negative pressure generated by the flow of the industrial water to provide the necessary power for subsequent gas delivery and swirling;
  • the industrial water in the evacuated cooler is mixed with the fugitive gas to exchange heat, and the fugitive gas is cooled to condense part of the moisture in the fugitive gas. After the heat exchange, the industrial water is refluxed, and after the pressurized cooling, the fugitive gas enters the top of the swirling injector.
  • the condensate water droplets in the fugitive gas are further coalesced and separated; the absorbing liquid enters the swirling jet absorber through the pump, and the fugitive gas enters tangentially from the top inlet of the absorber, and the absorbing liquid passes from the side wall of the absorber
  • the small hole is sprayed; the streamlined absorbing liquid injected radially is continuously cut by the escaping gas which is tangentially rotated at a high speed to form a plurality of absorbing liquid droplets; after absorption, the absorbing liquid flows out from the bottom of the absorber, and the purified gas is ejected from the swirling stream.
  • the top of the absorber flows out.
  • the evacuation cooler has a gas cooling and pressurization function to initially remove dust and moisture.
  • the evacuation cooler can generate evacuated gas and industrial water with different flow rates and pressures after being evacuated by industrial water with different flow rates and pressures.
  • the industrial water in the evacuation cooler cools the fugitive gas, and the condensed water droplets can agglomerate part of the dust and odorous substances in the adsorption gas to initially purify the gas.
  • the inlet industrial water is lower temperature and higher pressure water
  • the export industrial water is higher temperature and lower pressure water, and can be recycled.
  • the cyclone jet absorber can adopt different alkali liquids, and the sodium sulfide or sodium carbonate solution can be used to remove hydrogen sulfide and mercaptan in the fugitive gas, and the MDEA amine liquid can be used to remove the vulcanization in the fugitive gas. hydrogen.
  • the swirl jet absorber can also remove dust and moisture in the fugitive gas to further purify the fugitive gas.
  • the evacuation cooler and the swirl jet absorber adopt mediums with different diameters and different parameters, and can process industrial low-pressure dissipated gases of different air volumes.
  • the device can remove water and sulfur-containing substances in the fugitive gas and reduce the gas dust content, so that the hydrogen sulfide content of the purified gas is less than 1 mg/m 3 and the dust is less than 20 mg/m 3 .
  • the invention also provides an industrial low-pressure dissipative gas absorption device, comprising: a liquid pump for conveying the absorption liquid to the cyclone jet absorber; for cooling and pressurizing the low-pressure dissipative gas, and initially removing the escape An evacuation cooler for dust and moisture in the gas; a sulfide jet absorber that removes the sulfide in the fugitive gas and further removes dust and moisture and is connected to the evacuation cooler;
  • the top of the evacuation cooler is provided with a low-pressure escape gas inlet and an industrial water inlet;
  • the swirling jet absorber is provided with a gas inlet and an absorbing liquid inlet; a gas outlet is arranged at the top of the swirling jet absorber, and an absorbing liquid outlet is arranged at the bottom of the swirling jet absorber;
  • the evacuation cooler is in series with the swirl jet absorber.
  • the industrial low-pressure dissipative gas absorption device is characterized in that the evacuation cooler is armored with the cyclone jet absorber, reducing the total footprint and total investment of the device.
  • the evacuation cooler and the cyclone injector are connected in series to pressurize and cool the gas, and remove various harmful components such as hydrogen sulfide, mercaptan and dust in the gas.
  • the desulfurization absorption efficiency of the cyclone jet absorber is 99% or more.
  • the device has few equipments, simple process and low energy consumption.
  • the evacuation cooler and the cyclone jet absorber are armored to reduce the total system footprint and total investment.
  • Figure 1 is a view of the industrial low pressure fugitive gas absorption apparatus of the present invention.
  • Figure 2 is a diagram of a swirl jet absorber device of the present invention.
  • FIG. 3 is a diagram of a cooling evacuator device of the present invention.
  • the low-pressure fugitive gas discharged from the plant enters the top inlet of the evacuation chiller 2, while the industrial water also enters the top inlet of the evacuation chiller 2; the low-pressure dissipated gas is cooled by the evacuation chiller, plus Pressing, preliminarily removing dust and moisture, and then delivering it to the swirling jet absorber 3, the industrial water is discharged from the bottom outlet of the swirling jet absorber 3; and the absorbent is transported by the liquid pump 1 to the swirling jet absorber 3, After the dispersing gas is desulfurized by 3, the dust and moisture are further removed, and then discharged from the top outlet of the cyclone jet absorber 3, and the absorbing liquid flows out from the bottom outlet of the cyclone jet absorber 3.
  • the invention provides an industrial low-pressure escape gas absorption device, the device comprising:
  • a liquid pump for conveying the absorption liquid to the swirl jet absorber
  • the evacuation cooler is used for cooling and pressurizing the low-pressure escape gas, and initially removing the dust and moisture in the fugitive gas;
  • the cyclone jet absorber connected to the evacuation cooler removes sulfide in the fugitive gas to further remove dust, moisture and the like; in the present invention, the structure of the cyclone jet absorber can be referred to as "a high-efficiency hydrogen sulfide gas "Absorption device", the application date is September 21, 2016, and the application number is 201610494578.6.
  • the evacuation cooler and the cyclone injector are connected in series to pressurize and cool the gas to remove various harmful components such as hydrogen sulfide, mercaptan and dust in the gas; the desulfurization absorption efficiency of the cyclone jet absorber is above 99%; With additional power equipment, the equipment is reliable and the failure rate is low; the device has few equipments, simple process and low energy consumption; the evacuation cooler and the cyclone jet absorber are integrated to reduce the total system footprint and total investment.
  • the decoking waste gas treatment of a coking plant in a refinery in Shandong is carried out using the apparatus of the present invention.
  • the system exhaust port detects a hydrogen sulfide content of less than 0.8 mg/m 3 , a maximum removal efficiency of 96%, and a dust content of less than 20 mg/m 3 .
  • the device of the present invention simplifies the system, saves costs, and can generate great economic benefits.
  • the system exhaust port detects a hydrogen sulfide content of less than 0.6 mg/m 3 , a maximum removal efficiency of 96%, an odor concentration of less than 45 mg/m 3 , and a maximum removal efficiency of 97%.
  • the process and apparatus of the present invention simplifies the system, saves costs, and can generate great economic benefits.
  • the process of the invention Due to the process of the invention, a plurality of fugitive gases are collected and treated together, and the hydrogen sulfide content of the system exhaust port is less than 0.7 mg/m 3 , the maximum removal efficiency is 99%, and the mercaptan content is less than 0.9 mg/ m 3 , the maximum removal efficiency is 96%.
  • the process and apparatus of the present invention simplifies the system, saves costs, and can generate great economic benefits.

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Abstract

Disclosed are an absorption device for an industrial low-pressure fugitive emission gas and an absorption method therefor. The absorption device includes a vacuum cooler (2), a swirl spray absorber (3) and a circulating liquid pump (1). The vacuum cooler (2) is provided with a low-pressure fugitive emission gas inlet, an industrial water inlet, a purified gas outlet and an industrial water outlet, and can cool, pressurize and transport a low-pressure fugitive emission gas, and preliminarily remove dust and moisture. The swirl spray absorber (3) is connected to the vacuum cooler (2), is provided with a fugitive emission gas inlet, an absorption liquid inlet, an absorption liquid outlet and a purified gas outlet, and can remove sulfur-containing substances in a fugitive emission gas, and further remove dust, moisture, etc.

Description

一种工业低压逸散气体吸收装置及其吸收方法Industrial low-pressure dissipative gas absorption device and absorption method thereof 技术领域Technical field

本发明属于石油化工与环保领域，涉及一种工业低压逸散气体吸收装置，主要解决工业低压逸散气体净化问题。The invention belongs to the field of petrochemical industry and environmental protection, and relates to an industrial low-pressure dissipative gas absorption device, which mainly solves the problem of industrial low-pressure escape gas purification.

背景技术Background technique

随着社会的发展，人们的环保意识越来越强烈，一方面，经济的发展在人们认识的现阶段不可避免地要产生一定的污染，另一方面，人类的进步对自己所处的生存环境提出了更高的要求，各级环保部门对污染排放物的限制也越来越严格，如何取得经济效益与环境的统一是人类面临的新问题，而在现阶段解决污染源的有效措施之一是对污染源进行治理，使其对周边生态环境的污染影响降到最低，其排放总量及排放浓度达到(或优于)国家和地方相应的法律法规及规范的要求。With the development of society, people's awareness of environmental protection is getting stronger and stronger. On the one hand, the development of the economy will inevitably produce certain pollution at the present stage of people's understanding. On the other hand, the progress of human beings is in the living environment where they live. Higher requirements have been put forward, and the restrictions on pollution emissions by environmental protection departments at all levels are becoming more and more strict. How to achieve the unification of economic benefits and environment is a new problem facing humanity, and one of the effective measures to solve pollution sources at this stage is The pollution source is controlled to minimize the pollution impact on the surrounding ecological environment, and the total emission and emission concentration meets (or is superior to) the corresponding laws and regulations of the country and the local.

我国从1996年的《大气污染物综合排放标准》开始，就已将PM10、SOx，NOx等列入控制指标，到2013年《重点区域大气污染防治“十二五”规划》开始，要求重点行业(包括石化业中VOCs)现役源排放削减10％～18％。根据最新的GB 31570-2015《石油炼制工业污染物排放标准》的规定，工艺加热炉颗粒物<20mg/m 3，二氧化硫<50mg/m 3，氮氧化物<100mg/m 3，废水处理装置中的外排有机废气，苯<4mg/m 3，甲苯<15mg/m 3，二甲苯<20mg/m 3，非甲烷总烃<120mg/m 3。另外，根据GB14554《恶臭污染物排放标准》的规定，恶臭污染物厂界标准值中无组织排放源臭气浓度应低于30. Since the beginning of the "Integrated Emission Standards for Air Pollutants" in 1996, China has included PM10, SOx, NOx, etc. in the control indicators, and started the "12th Five-Year Plan for Air Pollution Prevention and Control in Key Areas" in 2013, requiring key industries. (including VOCs in the petrochemical industry) reduction of active source emissions by 10% to 18%. According to the latest GB 31570-2015 "Petroleum Refining Industry Pollutant Emission Standards", the process heating furnace particles <20mg/m 3 , sulfur dioxide <50mg/m 3 , nitrogen oxides <100mg/m 3 , in the wastewater treatment plant The efflux organic waste gas, benzene <4mg/m 3 , toluene <15mg/m 3 , xylene <20mg/m 3 , non-methane total hydrocarbon <120mg/m 3 . In addition, according to the provisions of GB14554 “Emission Standard for Odor Pollutants”, the odor concentration of unorganized emission sources in the standard value of the foul odor pollutants should be less than 30.

废气净化装置是对废气进行净化处理，使其达到排放标准的装置，目前，市场上有各种各样的废气净化装置，但是他们的净化效果不好，效率低，设备繁多，一些没有达到排放标准的气体也会被排放到空气中，从而对空气造成一定的污染，不能满足环保的要求，本发明提供一种工业低压逸散气体吸收装置，能有效的解决上述所出现的问题。The exhaust gas purification device is a device that purifies the exhaust gas to meet the discharge standard. At present, there are various exhaust gas purification devices on the market, but their purification effect is not good, the efficiency is low, the equipment is numerous, and some do not reach the emission. The standard gas is also discharged into the air, thereby causing certain pollution to the air and failing to meet the requirements of environmental protection. The present invention provides an industrial low-pressure escape gas absorption device, which can effectively solve the above problems.

发明内容Summary of the invention

本发明的目的是克服上述现有技术的不足，提供了一种工业低压逸散气体吸收装置及其吸收方法。SUMMARY OF THE INVENTION It is an object of the present invention to overcome the deficiencies of the prior art described above and to provide an industrial low pressure fugitive gas absorption apparatus and an absorption method therefor.

一种工业低压逸散气体吸收方法，该方法是：An industrial low pressure fugitive gas absorption method, the method is:

低压逸散气体进入抽空冷却器顶部入口，同时工业用水也输送至顶部入口，抽空冷却器利用工业用水流动产生的负压力将低压逸散气体加压，为后续气体输送和旋流提供必要动力；抽空冷却器中工业用水与逸散气体混合换热，冷却逸散气体，使逸散气体中部分水分凝析，换热后工业用水回流，加压冷却后逸散气体进入旋流喷射器顶部入口，利用旋流场作用，使逸散气体中凝析水滴进一步聚结分离；吸收液经泵进入旋流喷射吸收器，逸散气体从吸收器顶部入口切向进入，吸收液从吸收器侧壁小孔喷入；径向喷入的流线型吸收液被切向高速旋转的逸散气体持续切割，形成无数吸收液雾滴；经吸收后吸收液从吸收器底部流出，净化后气体从旋流喷射吸收器顶部流出。The low-pressure fugitive gas enters the top inlet of the evacuation cooler, and the industrial water is also delivered to the top inlet. The evacuation cooler pressurizes the low-pressure fugitive gas with a negative pressure generated by the flow of the industrial water to provide the necessary power for subsequent gas delivery and swirling; The industrial water in the evacuated cooler is mixed with the fugitive gas to exchange heat, and the fugitive gas is cooled to condense part of the moisture in the fugitive gas. After the heat exchange, the industrial water is refluxed, and after the pressurized cooling, the fugitive gas enters the top of the swirling injector. Using the action of the swirling flow field, the condensate water droplets in the fugitive gas are further coalesced and separated; the absorbing liquid enters the swirling jet absorber through the pump, and the fugitive gas enters tangentially from the top inlet of the absorber, and the absorbing liquid passes from the side wall of the absorber The small hole is sprayed; the streamlined absorbing liquid injected radially is continuously cut by the escaping gas which is tangentially rotated at a high speed to form a plurality of absorbing liquid droplets; after absorption, the absorbing liquid flows out from the bottom of the absorber, and the purified gas is ejected from the swirling stream. The top of the absorber flows out.

优选的，所述的抽空冷却器具有气体冷却、加压作用，可初步脱除粉尘、水分。Preferably, the evacuation cooler has a gas cooling and pressurization function to initially remove dust and moisture.

优选的，所述的抽空冷却器，当用不同流量、压力的工业用水进行抽空后，可产生不同流量与压力的抽空后气体、工业用水。Preferably, the evacuation cooler can generate evacuated gas and industrial water with different flow rates and pressures after being evacuated by industrial water with different flow rates and pressures.

优选的，所述的抽空冷却器中工业用水可冷却逸散气体，凝结水滴可聚结吸附气体中部分粉尘及恶臭物质，初步净化气体。Preferably, the industrial water in the evacuation cooler cools the fugitive gas, and the condensed water droplets can agglomerate part of the dust and odorous substances in the adsorption gas to initially purify the gas.

优选的，所述的入口工业用水为较低温较高压用水，出口工业用水为较高温较低压用水，可循环使用。Preferably, the inlet industrial water is lower temperature and higher pressure water, and the export industrial water is higher temperature and lower pressure water, and can be recycled.

优选的，所述的旋流喷射吸收器可采用不同碱液，采用氢氧化钠或碳酸钠溶液可脱除逸散气体中硫化氢及硫醇，采用MDEA胺液可脱除逸散气体中硫化氢。Preferably, the cyclone jet absorber can adopt different alkali liquids, and the sodium sulfide or sodium carbonate solution can be used to remove hydrogen sulfide and mercaptan in the fugitive gas, and the MDEA amine liquid can be used to remove the vulcanization in the fugitive gas. hydrogen.

优选的，所述的旋流喷射吸收器还可脱除逸散气体中粉尘、水分，进一步净化逸散气体。Preferably, the swirl jet absorber can also remove dust and moisture in the fugitive gas to further purify the fugitive gas.

优选的，所述的抽空冷却器、旋流喷射吸收器采用不同直径、不同参数的介质，可处理不同风量工业低压逸散气体。Preferably, the evacuation cooler and the swirl jet absorber adopt mediums with different diameters and different parameters, and can process industrial low-pressure dissipated gases of different air volumes.

优选的，该装置可脱除逸散气体中水、含硫物，降低气体粉尘含量，使净化后气体硫化氢含量低于1mg/m 3，粉尘低于20mg/m 3。 Preferably, the device can remove water and sulfur-containing substances in the fugitive gas and reduce the gas dust content, so that the hydrogen sulfide content of the purified gas is less than 1 mg/m 3 and the dust is less than 20 mg/m 3 .

本发明还提供了一种工业低压逸散气体吸收装置，该装置包括：用于输送吸收液至旋流喷射吸收器的液泵；用于冷却、加压低压逸散气体，初步脱除逸散气体中粉尘、水分的抽空冷却器；脱除逸散气体中硫化物，进一步脱除粉尘、水分的与抽空冷却器连接的旋流喷射吸收器；The invention also provides an industrial low-pressure dissipative gas absorption device, comprising: a liquid pump for conveying the absorption liquid to the cyclone jet absorber; for cooling and pressurizing the low-pressure dissipative gas, and initially removing the escape An evacuation cooler for dust and moisture in the gas; a sulfide jet absorber that removes the sulfide in the fugitive gas and further removes dust and moisture and is connected to the evacuation cooler;

所述抽空冷却器顶部设有低压逸散气体进口、工业用水进口；The top of the evacuation cooler is provided with a low-pressure escape gas inlet and an industrial water inlet;

所述旋流喷射吸收器设有气体进口、吸收液进口；旋流喷射吸收器顶部设有气体出口，旋流喷射吸收器底部设有吸收液出口；The swirling jet absorber is provided with a gas inlet and an absorbing liquid inlet; a gas outlet is arranged at the top of the swirling jet absorber, and an absorbing liquid outlet is arranged at the bottom of the swirling jet absorber;

所述抽空冷却器与旋流喷射吸收器串联。The evacuation cooler is in series with the swirl jet absorber.

优选的，所述的工业低压逸散气体吸收装置，其特征在于，抽空冷却器与旋流喷射吸收器撬装一体，减少装置的总占地面积和总投资。Preferably, the industrial low-pressure dissipative gas absorption device is characterized in that the evacuation cooler is armored with the cyclone jet absorber, reducing the total footprint and total investment of the device.

本发明装置的特点如下：The features of the device of the invention are as follows:

(1)抽空冷却器、旋流喷射器串联，可增压、冷却气体，脱除气体中硫化氢、硫醇、粉尘等多种有害组分。(1) The evacuation cooler and the cyclone injector are connected in series to pressurize and cool the gas, and remove various harmful components such as hydrogen sulfide, mercaptan and dust in the gas.

(2)旋流喷射吸收器的脱硫吸收效率在99％以上。(2) The desulfurization absorption efficiency of the cyclone jet absorber is 99% or more.

(3)无外加动力设备，设备可靠，故障率低。(3) No external power equipment, reliable equipment and low failure rate.

(4)该装置设备少，工艺简单，能耗低。(4) The device has few equipments, simple process and low energy consumption.

(5)抽空冷却器、旋流喷射吸收器撬装一体，减少系统总占地面积和总投资。(5) The evacuation cooler and the cyclone jet absorber are armored to reduce the total system footprint and total investment.

附图说明DRAWINGS

图1是本发明的工业低压逸散气体吸收装置图。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a view of the industrial low pressure fugitive gas absorption apparatus of the present invention.

图2是本发明的旋流喷射吸收器装置图。Figure 2 is a diagram of a swirl jet absorber device of the present invention.

图3是本发明的冷却抽空器装置图。Figure 3 is a diagram of a cooling evacuator device of the present invention.

符号说明：Symbol Description:

1液泵；2抽空冷却器；3旋流喷射吸收器。1 liquid pump; 2 evacuation cooler; 3 swirl jet absorber.

具体实施方式detailed description

本发明的技术构思如下：The technical idea of the present invention is as follows:

如图1、2和3所示，工厂排放的低压逸散气体进入抽空冷却器2中顶部入 口，同时工业用水也进入抽空冷却器2中顶部入口；低压逸散气体经抽空冷却器冷却、加压，初步脱除粉尘、水分后输送至旋流喷射吸收器3中，工业用水由旋流喷射吸收器3底部出口流出；同时吸收液由液泵1输送至旋流喷射吸收器3中，逸散气体经3脱硫，进一步脱除粉尘、水分后，由旋流喷射吸收器3顶部出口排出，吸收液由旋流喷射吸收器3底部出口流出。As shown in Figures 1, 2 and 3, the low-pressure fugitive gas discharged from the plant enters the top inlet of the evacuation chiller 2, while the industrial water also enters the top inlet of the evacuation chiller 2; the low-pressure dissipated gas is cooled by the evacuation chiller, plus Pressing, preliminarily removing dust and moisture, and then delivering it to the swirling jet absorber 3, the industrial water is discharged from the bottom outlet of the swirling jet absorber 3; and the absorbent is transported by the liquid pump 1 to the swirling jet absorber 3, After the dispersing gas is desulfurized by 3, the dust and moisture are further removed, and then discharged from the top outlet of the cyclone jet absorber 3, and the absorbing liquid flows out from the bottom outlet of the cyclone jet absorber 3.

本发明提供了一种工业低压逸散气体吸收装置，该装置包括：The invention provides an industrial low-pressure escape gas absorption device, the device comprising:

液泵，用于输送吸收液至旋流喷射吸收器；a liquid pump for conveying the absorption liquid to the swirl jet absorber;

抽空冷却器，用于冷却、加压低压逸散气体，初步脱除逸散气体中粉尘、水分；The evacuation cooler is used for cooling and pressurizing the low-pressure escape gas, and initially removing the dust and moisture in the fugitive gas;

与抽空冷却器连接的旋流喷射吸收器，脱除逸散气体中硫化物，进一步脱除粉尘、水分等；本发明中旋流喷射吸收器结构，可参见名称为“一种高效硫化氢气体吸收装置”，申请日是2016年9月21日，申请号是201610494578.6的专利申请文件。The cyclone jet absorber connected to the evacuation cooler removes sulfide in the fugitive gas to further remove dust, moisture and the like; in the present invention, the structure of the cyclone jet absorber can be referred to as "a high-efficiency hydrogen sulfide gas "Absorption device", the application date is September 21, 2016, and the application number is 201610494578.6.

本发明装置的优点在于：The advantages of the device of the invention are:

抽空冷却器、旋流喷射器串联，可增压、冷却气体，脱除气体中硫化氢、硫醇、粉尘等多种有害组分；旋流喷射吸收器的脱硫吸收效率在99％以上；无外加动力设备，设备可靠，故障率低；该装置设备少，工艺简单，能耗低；抽空冷却器、旋流喷射吸收器撬装一体，减少系统总占地面积和总投资。The evacuation cooler and the cyclone injector are connected in series to pressurize and cool the gas to remove various harmful components such as hydrogen sulfide, mercaptan and dust in the gas; the desulfurization absorption efficiency of the cyclone jet absorber is above 99%; With additional power equipment, the equipment is reliable and the failure rate is low; the device has few equipments, simple process and low energy consumption; the evacuation cooler and the cyclone jet absorber are integrated to reduce the total system footprint and total investment.

以上所述内容仅为本发明构思下的基本说明，而依据本发明的技术方案所作的任何等效变换，均应属于本发明的保护范围。The above description is only a basic description of the present invention, and any equivalent transformation made according to the technical solution of the present invention should fall within the protection scope of the present invention.

下面结合实施例对本发明进一步说明，实施例并不限制本发明的范围。The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

实施例1：Example 1:

山东某炼厂焦化装置除焦废气处理，使用本发明装置进行。The decoking waste gas treatment of a coking plant in a refinery in Shandong is carried out using the apparatus of the present invention.

具体工艺流程如图1所示，除焦废气组分如下表所示：The specific process flow is shown in Figure 1. The deodorization waste gas components are shown in the following table:

表1 山东某炼厂焦化装置除焦废气组分Table 1 Decoction waste components of a coking plant in a refinery in Shandong

项目project H 2S(mg/Nm 3) H 2 S(mg/Nm 3 ) 采样部位Sampling site 11 20.720.7 焦炭塔顶自动卸盖机出口，顶盖完全打开时Coke tower top automatic unloader exit, when the top cover is fully open 22 0.0810.081 焦炭塔顶自动卸盖机出口，顶盖打开后1小时Coke tower top automatic unloader exit, 1 hour after the top cover is opened

33 0.0510.051 焦炭塔顶自动卸盖机出口，顶盖完全关闭前10分钟Coke tower top automatic unloader exit, 10 minutes before the top cover is completely closed 44 10.110.1 焦炭塔底溜焦槽出口正上方，底盖完全打开时The top of the coke drum bottom slip exit is open, when the bottom cover is fully open 55 0.3920.392 焦炭塔底溜焦槽出口正上方，除焦钻孔完成时Immediately above the coke drum bottom slip exit, when the decoupling hole is completed 66 0.0590.059 焦炭塔底溜焦槽出口正上方，开始切焦约1.5小时Just above the exit of the coke drum at the bottom of the coke drum, start to cut the coke for about 1.5 hours. 88 0.0370.037 沉淀池上方Above the sedimentation tank

技术效果：Technical effect:

由于采用本发明所述装置，系统排气口检测硫化氢含量低于0.8mg/m 3，最大脱除效率为96％，粉尘含量低于20mg/m 3。和其他工艺及装置相比，本发明的装置简化了系统，节省了成本，能产生极大的经济效益。 Due to the use of the apparatus of the present invention, the system exhaust port detects a hydrogen sulfide content of less than 0.8 mg/m 3 , a maximum removal efficiency of 96%, and a dust content of less than 20 mg/m 3 . Compared with other processes and devices, the device of the present invention simplifies the system, saves costs, and can generate great economic benefits.

实施例2：Example 2:

浙江某石化企业焦化冷焦水作业环境空气净化处理，使用本发明装置进行。The air purification treatment of coking cold coke operation in a petrochemical enterprise in Zhejiang Province was carried out using the device of the present invention.

具体工艺流程如图1所示，环境空气监测数据如下表所示：The specific process flow is shown in Figure 1. The ambient air monitoring data is shown in the following table:

表2 浙江某石化企业焦化冷焦水作业环境空气监测数据Table 2 Environmental monitoring data of coking cold coke operation in a petrochemical enterprise in Zhejiang Province

Figure PCTCN2018074209-appb-000001
Figure PCTCN2018074209-appb-000001

技术效果：Technical effect:

由于采用本发明所述装置，系统排气口检测硫化氢含量低于0.6mg/m 3，最大脱除效率为96％，臭气浓度低于45mg/m 3，最大脱除效率为97％。和其他工艺及装置相比，本发明的工艺及装置简化了系统，节省了成本，能产生极大的经济效益。 Due to the use of the apparatus of the present invention, the system exhaust port detects a hydrogen sulfide content of less than 0.6 mg/m 3 , a maximum removal efficiency of 96%, an odor concentration of less than 45 mg/m 3 , and a maximum removal efficiency of 97%. Compared with other processes and devices, the process and apparatus of the present invention simplifies the system, saves costs, and can generate great economic benefits.

实施例3：Example 3:

湖北某炼厂焦化装置废气处理，使用本发明装置进行。Exhaust gas treatment of a coking plant in a refinery in Hubei is carried out using the apparatus of the present invention.

具体工艺流程如图1所示，焦化装置废气数据如下表所示：The specific process flow is shown in Figure 1. The coke unit exhaust gas data is shown in the following table:

表3 湖北某炼厂焦化装置废气数据Table 3 Waste gas data of a coking plant in a refinery in Hubei

Figure PCTCN2018074209-appb-000002
Figure PCTCN2018074209-appb-000002

技术效果：Technical effect:

由于采用本发明所述工艺，多处逸散点气体一同收集处理，系统排气口检测硫化氢含量低于0.7mg/m 3，最大脱除效率为99％，硫醇含量低于0.9mg/m 3，最大脱除效率为96％。和其他工艺及装置相比，本发明的工艺及装置简化了系统，节省了成本，能产生极大的经济效益。 Due to the process of the invention, a plurality of fugitive gases are collected and treated together, and the hydrogen sulfide content of the system exhaust port is less than 0.7 mg/m 3 , the maximum removal efficiency is 99%, and the mercaptan content is less than 0.9 mg/ m 3 , the maximum removal efficiency is 96%. Compared with other processes and devices, the process and apparatus of the present invention simplifies the system, saves costs, and can generate great economic benefits.

以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。The above description of the embodiments is merely to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims (10)

一种工业低压逸散气体吸收方法，其特征在于：低压逸散气体进入抽空冷却器顶部入口，同时工业用水也输送至顶部入口，抽空冷却器利用工业用水流动产生的负压力将低压逸散气体加压，为后续气体输送和旋流提供必要动力；抽空冷却器中工业用水与逸散气体混合换热，冷却逸散气体，使逸散气体中部分水分凝析，换热后工业用水回流，加压冷却后逸散气体进入旋流喷射器顶部入口，利用旋流场作用，使逸散气体中凝析水滴进一步聚结分离；吸收液经泵进入旋流喷射吸收器，逸散气体从吸收器顶部入口切向进入，吸收液从吸收器侧壁小孔喷入；径向喷入的流线型吸收液被切向高速旋转的逸散气体持续切割，形成无数吸收液雾滴；经吸收后吸收液从吸收器底部流出，净化后气体从旋流喷射吸收器顶部流出。An industrial low-pressure dissipative gas absorption method, characterized in that: low-pressure dissipated gas enters the top inlet of the evacuation cooler, and industrial water is also delivered to the top inlet, and the evacuation cooler uses the negative pressure generated by the flow of industrial water to discharge the low-pressure gas Pressurization provides the necessary power for subsequent gas delivery and swirling; the industrial water in the evacuated cooler is mixed with the fugitive gas to exchange heat, and the fugitive gas is cooled to condense part of the moisture in the fugitive gas, and the industrial water is refluxed after heat exchange. After pressurized cooling, the fugitive gas enters the top inlet of the swirling ejector, and the condensed water droplets in the fugitive gas are further coalesced and separated by the action of the swirling flow field; the absorbing liquid is pumped into the swirling jet absorber, and the fugitive gas is absorbed from the absorber. The top inlet of the device enters tangentially, and the absorbing liquid is injected from the small hole in the side wall of the absorber; the streamlined absorbing liquid injected radially is continuously cut by the escaping gas which is rotated at a high speed to form a plurality of absorbing liquid droplets; The liquid flows from the bottom of the absorber, and the purified gas flows out from the top of the swirl jet absorber. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的抽空冷却器具有气体冷却、加压作用，可初步脱除粉尘、水分。The industrial low-pressure dissipative gas absorption method according to claim 1, wherein the evacuation cooler has a gas cooling and pressurizing action to preliminarily remove dust and moisture. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的抽空冷却器，当用不同流量、压力的工业用水进行抽空后，可产生不同流量与压力的抽空后气体、工业用水。The industrial low-pressure dissipative gas absorption method according to claim 1, wherein the evacuation cooler is capable of generating an evacuated gas of different flow rates and pressures after being evacuated by industrial water having different flow rates and pressures. Industrial water. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的抽空冷却器中工业用水可冷却逸散气体，凝结水滴可聚结吸附气体中部分粉尘及恶臭物质，初步净化气体。The industrial low-pressure dissipative gas absorption method according to claim 1, wherein the industrial water in the evacuation cooler cools the fugitive gas, and the condensation water droplets can agglomerate part of the dust and odorous substances in the adsorption gas, and the preliminary purification gas. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的入口工业用水为较低温较高压用水，出口工业用水为较高温较低压用水，可循环使用。The industrial low-pressure dissipative gas absorption method according to claim 1, wherein the inlet industrial water is a lower temperature and higher pressure water, and the outlet industrial water is a higher temperature and lower pressure water, which can be recycled. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的旋流喷射吸收器可采用不同碱液，采用氢氧化钠或碳酸钠溶液可脱除逸散气体中硫化氢及硫醇，采用MDEA胺液可脱除逸散气体中硫化氢。The industrial low-pressure dissipative gas absorption method according to claim 1, wherein said cyclone jet absorber can adopt different alkali liquids, and sodium hydrogen sulfide or sodium carbonate solution can be used to remove hydrogen sulfide in the fugitive gas. And mercaptan, using MDEA amine liquid can remove hydrogen sulfide in the fugitive gas. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的旋流喷射吸收器还可脱除逸散气体中粉尘、水分，进一步净化逸散气体。The industrial low-pressure escape gas absorption method according to claim 1, wherein the swirl jet absorber further removes dust and moisture in the fugitive gas to further purify the fugitive gas. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述的抽空冷却器、旋流喷射吸收器采用不同直径、不同参数的介质，可处理不同风量 工业低压逸散气体。The industrial low-pressure dissipative gas absorption method according to claim 1, wherein the evacuation cooler and the cyclone jet absorber use mediums of different diameters and different parameters to process industrial low-pressure dissipated gases of different air volumes. 根据权利要求1所述的工业低压逸散气体吸收方法，其特征在于，所述方法可脱除逸散气体中水、含硫物，降低气体粉尘含量，使净化后气体硫化氢含量低于1mg/m 3，粉尘低于20mg/m 3。 The industrial low-pressure dissipative gas absorption method according to claim 1, wherein the method can remove water and sulfur-containing substances in the fugitive gas, reduce the gas dust content, and make the hydrogen sulfide content of the purified gas less than 1 mg. /m 3 , dust is less than 20mg/m 3 . 一种工业低压逸散气体吸收装置，该装置包括：用于输送吸收液至旋流喷射吸收器的液泵；用于冷却、加压低压逸散气体，初步脱除逸散气体中粉尘、水分的抽空冷却器；脱除逸散气体中硫化物，进一步脱除粉尘、水分的与抽空冷却器连接的旋流喷射吸收器；The utility model relates to an industrial low-pressure dissipative gas absorption device, which comprises: a liquid pump for conveying the absorption liquid to the swirling injection absorber; for cooling and pressurizing the low-pressure dissipative gas, and initially removing the dust and moisture in the fugitive gas; An evacuation cooler; a cyclone jet absorber that removes sulfide in the fugitive gas and further removes dust and moisture from the evacuation cooler; 所述抽空冷却器顶部设有低压逸散气体进口、工业用水进口；The top of the evacuation cooler is provided with a low-pressure escape gas inlet and an industrial water inlet; 所述旋流喷射吸收器设有气体进口、吸收液进口；旋流喷射吸收器顶部设有气体出口，旋流喷射吸收器底部设有吸收液出口；The swirling jet absorber is provided with a gas inlet and an absorbing liquid inlet; a gas outlet is arranged at the top of the swirling jet absorber, and an absorbing liquid outlet is arranged at the bottom of the swirling jet absorber; 所述抽空冷却器与旋流喷射吸收器串联。The evacuation cooler is in series with the swirl jet absorber.
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