WO2018137691A1 - 一种工业低压逸散气体吸收装置及其吸收方法 - Google Patents

一种工业低压逸散气体吸收装置及其吸收方法 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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gas
pressure
low
industrial
fugitive
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English (en)
French (fr)
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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    • 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
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01D47/06—Spray cleaning
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    • 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
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • 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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    • B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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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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    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
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    • C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
    • C01B17/05—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by wet processes
    • C—CHEMISTRY; METALLURGY
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    • 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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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

一种工业低压逸散气体吸收装置及其吸收方法，吸收装置包含抽空冷却器（2）、旋流喷射吸收器（3）和循环液泵（1）；抽空冷却器（2）设有低压逸散气体入口、工业用水入口、净化后气体出口、工业用水出口，可将低压逸散气体冷却、加压、输送，初步脱除粉尘、水分；旋流喷射吸收器（3）与抽空冷却器（2）连接，设有逸散气体入口、吸收液入口、吸收液出口、净化后气体出口，可脱除逸散气体中含硫物，进一步脱除粉尘、水分等。

Description

一种工业低压逸散气体吸收装置及其吸收方法 技术领域
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。
背景技术
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。
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.
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。
发明内容
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。
一种工业低压逸散气体吸收方法，该方法是：
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。
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。
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。
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。
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。
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。
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。
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。
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。
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；
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；
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；
所述抽空冷却器与旋流喷射吸收器串联。
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。
本发明装置的特点如下：
(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。
(2)旋流喷射吸收器的脱硫吸收效率在99％以上。
(3)无外加动力设备，设备可靠，故障率低。
(4)该装置设备少，工艺简单，能耗低。
(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。
附图说明
图1是本发明的工业低压逸散气体吸收装置图。
图2是本发明的旋流喷射吸收器装置图。
图3是本发明的冷却抽空器装置图。
符号说明：
1液泵；2抽空冷却器；3旋流喷射吸收器。
具体实施方式
本发明的技术构思如下：
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。
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：
液泵，用于输送吸收液至旋流喷射吸收器；
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；
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。
本发明装置的优点在于：
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。
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。
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。
实施例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。
具体工艺流程如图1所示，除焦废气组分如下表所示：
表1 山东某炼厂焦化装置除焦废气组分
项目 H 2S(mg/Nm 3) 采样部位
1 20.7 焦炭塔顶自动卸盖机出口，顶盖完全打开时
2 0.081 焦炭塔顶自动卸盖机出口，顶盖打开后1小时
3 0.051 焦炭塔顶自动卸盖机出口，顶盖完全关闭前10分钟
4 10.1 焦炭塔底溜焦槽出口正上方，底盖完全打开时
5 0.392 焦炭塔底溜焦槽出口正上方，除焦钻孔完成时
6 0.059 焦炭塔底溜焦槽出口正上方，开始切焦约1.5小时
8 0.037 沉淀池上方
技术效果：
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。
实施例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。
具体工艺流程如图1所示，环境空气监测数据如下表所示：
表2 浙江某石化企业焦化冷焦水作业环境空气监测数据
Figure PCTCN2018074209-appb-000001
技术效果：
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。
实施例3：
湖北某炼厂焦化装置废气处理，使用本发明装置进行。
具体工艺流程如图1所示，焦化装置废气数据如下表所示：
表3 湖北某炼厂焦化装置废气数据
Figure PCTCN2018074209-appb-000002
技术效果：
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。
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。
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。

Claims (10)

  1. 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。
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. 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。
  9. 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。
  10. 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；
    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；
    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；
    所述抽空冷却器与旋流喷射吸收器串联。
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