WO2020108230A1 - 污染土壤热脱附有机尾气处理集成系统及处理方法 - Google Patents

污染土壤热脱附有机尾气处理集成系统及处理方法 Download PDF

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WO2020108230A1
WO2020108230A1 PCT/CN2019/115247 CN2019115247W WO2020108230A1 WO 2020108230 A1 WO2020108230 A1 WO 2020108230A1 CN 2019115247 W CN2019115247 W CN 2019115247W WO 2020108230 A1 WO2020108230 A1 WO 2020108230A1
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unit
tail gas
organic
adsorption
thermal desorption
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PCT/CN2019/115247
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English (en)
French (fr)
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吕正勇
宋盘龙
李淑彩
刘登山
范吉强
宋登慧
刘泽权
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北京高能时代环境技术股份有限公司
北京高能时代环境修复有限公司
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Publication of WO2020108230A1 publication Critical patent/WO2020108230A1/zh

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    • 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
    • B01D53/04—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 stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • 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
    • B01D53/002—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
    • 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
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • 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
    • B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas

Definitions

  • the invention belongs to the field of soil remediation, and more specifically, to an integrated system and method for thermally desorbing organic tail gas treatment of contaminated soil.
  • the remediation technologies for volatile organic compounds contaminated sites mainly include cement kiln co-processing, gas phase extraction technology, biological ventilation technology, chemical oxidation technology, microbial treatment, and heterogeneous/in-situ thermal desorption technology.
  • In-situ thermal desorption technology is the process of heating the soil in situ to make the volatile organic pollutants reach the temperature of desorption from the soil, and transfer the pollutants to the ground through the gas phase, so as to further collect and process.
  • in-situ thermal desorption technology has the characteristics of less excavation, less secondary pollution and good treatment effect.
  • due to the complex composition of soil tail gas there is currently no ideal treatment system for in-situ thermal desorption tail gas. Therefore, it is necessary to provide an integrated system for thermal desorption of contaminated soil by organic tail gas treatment.
  • the object of the present invention is to provide an integrated system for the thermal desorption of organic pollutants from contaminated soils.
  • organic degassing of contaminated soils that is, soil extraction gas
  • two stages of water removal and one condensation are used to remove water and water from the exhaust gas.
  • thermal desorption, condensation recovery and phase separation to achieve volatile organic compounds Centralized collection.
  • one aspect of the present invention provides an integrated system of organic tail gas treatment for thermal desorption of contaminated soil.
  • the integrated system of organic tail gas treatment includes a pretreatment separation unit, a condensing and cooling unit, a vacuum supply unit, and an organic tail gas removal unit connected in sequence.
  • a pretreatment separation unit a condensing and cooling unit, a vacuum supply unit, and an organic tail gas removal unit connected in sequence.
  • a vacuum supply unit a vacuum supply unit
  • organic tail gas removal unit connected in sequence.
  • the pretreatment separation unit includes a first steam-water separator
  • the condensing and cooling unit includes: a cooling and heat exchange device and a second steam-water separator, an inlet of the cooling and heat exchange device is connected to the pretreatment separation unit, an outlet of the second steam-water separator and the vacuum providing unit Connected
  • the vacuum providing unit includes at least one vacuum pump or vacuum fan;
  • the organic tail gas removal unit includes: a pretreatment temperature and humidity control device, an adsorption device and a matching regeneration device; the pretreatment temperature and humidity control device is connected to the adsorption device, and the matching regeneration device is used for the adsorption device Adsorption medium regeneration and desorption gas separation;
  • the control unit is respectively connected to the pretreatment separation unit, the condensing and cooling unit, the vacuum supply unit and the organic tail gas removal unit to control the automatic operation of each unit.
  • Another aspect of the present invention provides a method for processing organic tail gas from thermal desorption of contaminated soil.
  • the processing method is performed by using the integrated system for processing organic tail gas from thermal desorption of contaminated soil.
  • the processing method includes:
  • the extracted gas from the soil is separated through the first steam-water separator to remove the condensate and soil particles;
  • the gas phase processed by the first steam-water separator is cooled and condensed in the cooling heat exchange device, and then enters the second steam-water separator for separation, and the water enters the bottom of the second steam-water separator.
  • the upper part of the steam separator is discharged and enters the organic tail gas removal unit through the vacuum supply unit;
  • the gas phase entering the organic tail gas removal unit adjusts the temperature and humidity in the pretreatment temperature and humidity control device, and then enters the adsorption device, contacts the adsorption medium in the adsorption device, removes the organic gas therein, and obtains exhaust gas;
  • the contaminated soil thermal desorption organic tail gas treatment integrated system of the present invention is used to process the in-situ thermal desorption tail gas.
  • the soil thermal desorption organic tail gas is driven by a vacuum supply unit, and the condensable components are removed through the pretreatment separation unit and the cooling and condensation system ,
  • the non-condensable components are discharged after being processed by the organic tail gas removal unit;
  • the adsorption medium of the organic tail gas removal unit is desorbed and regenerated, and the regenerated gas phase of the organic tail gas removal unit is condensed to collect and process the organic matter in liquid phase;
  • the operation monitoring and automatic control of the pretreatment separation unit, the condensing and cooling unit, the vacuum supply unit and the organic tail gas removal unit are realized.
  • the integrated system for thermal desorption organic tail gas treatment of contaminated soil of the present invention can achieve efficient treatment of in-situ thermal desorption tail gas with good treatment effect and high organic matter removal rate.
  • FIG. 1 shows a schematic diagram of an integrated system for thermally desorbing organic tail gas from contaminated soil according to an embodiment of the present invention.
  • FIG. 2 shows a schematic diagram of device connection of an integrated system for organic tail gas treatment of thermal desorption of contaminated soil according to an embodiment of the present invention.
  • An aspect of the present invention provides an organic tail gas treatment integrated system for thermal desorption of contaminated soil.
  • the organic tail gas treatment integrated system includes a pretreatment separation unit, a condensing and cooling unit, a vacuum supply unit and an organic tail gas removal unit connected in sequence, and a control unit;
  • the pretreatment separation unit includes a first steam-water separator
  • the condensing and cooling unit includes: a cooling and heat exchange device and a second steam-water separator, an inlet of the cooling and heat exchange device is connected to the pretreatment separation unit, an outlet of the second steam-water separator and the vacuum providing unit Connected
  • the vacuum providing unit includes at least one vacuum pump or vacuum fan;
  • the organic tail gas removal unit includes: a pretreatment temperature and humidity control device, an adsorption device and a matching regeneration device; the pretreatment temperature and humidity control device is connected to the adsorption device, and the matching regeneration device is used for the adsorption device Adsorption medium regeneration and desorption gas separation;
  • the control unit is respectively connected to the pretreatment separation unit, the condensing and cooling unit, the vacuum supply unit and the organic tail gas removal unit to control the automatic operation of each unit.
  • control unit is to realize the automatic operation of controlling the pretreatment separation unit, the condensing and cooling unit, the vacuum supply unit and the organic tail gas removal unit.
  • the control unit may include sensors, actuators and related computers and In its processing system, the control unit and the above-mentioned units can be connected through a communication control line and realize communication.
  • the pretreatment separation unit and the condensing and cooling unit also include a thermometer, a pressure gauge, a flow meter, a liquid level gauge and a drain pump, and the process parameters are monitored by the above instruments, and the above instruments are all in communication connection with the control unit Or electrical connection, through the control unit to ensure the automatic operation of the system.
  • the discharge pump automatically starts, and when the liquid level gauge shows that the liquid level drops to the low position, the discharge pump automatically stops, thereby ensuring the separation of the first steam-water separator and the second steam-water separator The normal operation of the device.
  • the vacuum providing unit further includes rain and sound insulation facilities and related monitoring instruments.
  • the organic tail gas removal unit further includes a control instrument such as a thermometer, a pressure gauge, and a regulating valve.
  • a control instrument such as a thermometer, a pressure gauge, and a regulating valve.
  • the above-mentioned control instruments are all communicatively or electrically connected to the control unit, and centralized control is performed through the control unit to complete the adjustment of the operation process. Temperature and humidity control, adsorption, desorption, three-phase separation and other operations ensure the safe and stable operation of the organic tail gas removal unit.
  • the temperature reduction heat exchange device includes a first heat exchanger and a cooling water tower communicating with the first heat exchanger, and a circulating water pump is provided between the first heat exchanger and the cooling water tower; or
  • the cooling and heat exchange device is an integrated evaporative condenser.
  • the gas phase from the pretreatment separation unit enters the first heat exchanger, and the heat is taken away by the cooling water tower to further condense and lower the temperature; the cooled water and gas enter the second steam-water separator; the first heat exchanger and the cooling water tower A circulating water pump is provided in the room, and the circulating water pump can send the cooling water of the cooling water tower to the first heat exchanger for heat exchange, and the water after heat exchange is further returned to the cooling water tower to cool down and cool.
  • the adsorption device is also in communication with a discharge chimney for discharging exhaust gas that meets standards.
  • the first heat exchanger is a plate heat exchanger or a tubular heat exchanger
  • the cooling water tower is an open cooling water tower or a closed cooling water tower.
  • the pretreatment temperature and humidity control device is a self-coupling temperature and humidity control device, including a second heat exchanger and a cold dryer, an outlet of the second heat exchanger and an inlet of the cold dryer Connected, the outlet of the cold dryer is communicated with an inlet of the second heat exchanger.
  • the gas phase from the vacuum supply unit enters the hot side of the second heat exchanger to cool down, and then enters the cold dryer. After further cooling and removing water through the cold dryer, it enters the second heat exchanger for cold temperature measurement to adjust the relative humidity. Before entering the adsorption device, adjust the temperature and humidity of the gas phase to the best conditions.
  • the adsorption device includes a first adsorption tank and a second adsorption tank alternately connected to the system.
  • the adsorption medium of the adsorption device is activated carbon fiber or activated carbon particles.
  • the supporting regeneration device includes a regeneration heat source gas supply device, a condenser, a three-phase separator, a light phase storage tank, a waste water tank, and a heavy phase storage tank; the regeneration heat source gas supply device communicates with the adsorption device,
  • the condenser is in communication with the three-phase separator, and the three-phase separator is in communication with the light-phase storage tank, waste water tank, and heavy-phase storage tank, respectively.
  • the condenser in the supporting regeneration device adopts a tube-and-tube heat exchanger for condensation and cooling treatment.
  • the regenerative heat source gas supply device supplies water vapor or nitrogen at 100-200°C.
  • the pretreatment separation unit and the condensation cooling unit are skid-mounted as a module
  • the vacuum supply unit is skid-mounted as a module
  • the organic tail gas removal unit is skid-mounted as a module.
  • the units are integrated in a skid-mounted mode, which is convenient for transit transportation and equipment installation.
  • Another aspect of the present invention provides a method for processing organic tail gas from thermal desorption of contaminated soil.
  • the processing method is performed by using the integrated system for processing organic tail gas from thermal desorption of contaminated soil.
  • the processing method includes:
  • the extracted gas from the soil is separated through the first steam-water separator to remove the condensate and soil particles;
  • the gas phase processed by the first steam-water separator is cooled and condensed in the cooling heat exchange device, and then enters the second steam-water separator for separation, and the water enters the bottom of the second steam-water separator.
  • the upper part of the steam separator is discharged and enters the organic tail gas removal unit through the vacuum supply unit;
  • the gas phase entering the organic tail gas removal unit adjusts the temperature and humidity in the pretreatment temperature and humidity control device, and then enters the adsorption device, contacts the adsorption medium in the adsorption device, removes the organic gas therein, and obtains exhaust gas;
  • the regeneration process includes:
  • the integrated system of organic tail gas treatment includes a pretreatment separation unit 1, a condensing and cooling unit 2, and a vacuum supply unit connected in sequence 3 and organic tail gas removal unit 4 and control unit 5;
  • the pretreatment separation unit 1 includes a first steam-water separator 6;
  • the condensation cooling unit 2 includes: a temperature-reducing heat exchange device and a second steam-water separator 8, The inlet of the temperature reduction heat exchange device is connected to the pretreatment separation unit 1, and the outlet of the second steam-water separator 8 is connected to the vacuum supply unit 3;
  • the vacuum supply unit 3 includes a vacuum fan 11;
  • the organic tail gas removal unit 4 includes: a pretreatment temperature and humidity control device, an adsorption device and a supporting regeneration device; the pretreatment temperature and humidity control device is connected to the adsorption device, and the supporting regeneration device is used for an adsorption device The regeneration of the adsorption medium and the separation of the desorption gas; the control
  • the extracted gas from the soil passes through the first steam separator 6 to separate the condensate and soil particles; the gas phase processed by the first steam separator 6 is cooled and condensed in the cooling heat exchange device, and then enters The second steam-water separator 8 performs separation. Water enters the bottom of the second steam-water separator 8. The gas phase is discharged from the upper part of the second steam-water separator 8.
  • the vacuum gas supply unit 3 enters the organic tail gas removal unit 4;
  • the gas phase of 4 adjusts the temperature and humidity in the pretreatment temperature and humidity control device, then enters the adsorption device, contacts the adsorption medium in the adsorption device, removes the organic gas therein, and obtains exhaust gas, which is discharged through the exhaust chimney 19; when the adsorption device When the adsorption medium in the system reaches saturation, the adsorption medium will be regenerated through the matching regeneration device; during regeneration: stop the organic tail gas inlet of the adsorption device and pass into the regeneration heat source gas; the organic matter in the adsorption medium will be desorbed under the action of heat In the gas phase, the adsorption device is taken out and enters the condenser 17 to condense; and then enters the three-phase separator 20 to separate, to obtain an organic phase lighter than water, an organic phase heavier than water, and water, respectively enter the light phase storage tank 21, heavy Storage tank 23 and waste water tank 22.

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Abstract

一种污染土壤热脱附有机尾气处理集成系统及处理方法；该系统包括依次连接的预处理分离单元（1）、冷凝降温单元（2）、真空提供单元（3）和有机尾气脱除单元（4），以及控制单元（5）；预处理分离单元（1）包括第一汽水分离器（6）；冷凝降温单元（2）包括降温换热装置和第二汽水分离器（8）；真空提供单元（3）包括至少一台真空泵或真空风机（11）；有机尾气脱除单元（4）包括预处理调温调湿装置、吸附装置和配套再生装置；控制单元（5）分别与预处理分离单元（1）、冷凝降温单元（2）、真空提供单元（3）和有机尾气脱除单元（4）相连用于控制各单元的自动化运行。该系统能够实现原位热脱附尾气的高效处理，处理效果好，有机物去除率高。

Description

污染土壤热脱附有机尾气处理集成系统及处理方法 技术领域
本发明属于土壤修复领域，更具体地，涉及一种污染土壤热脱附有机尾气处理集成系统及处理方法。
背景技术
土壤污染已经引起越来越多的人重视，而随着工业化和城市化进程发展，城区置换出大量工业污染场地，其中，挥发性有机污染场地占有比较大的比例，对周边生态环境和居民健康形成了严重威胁。
目前，针对挥发性有机物污染场地的修复技术主要有水泥窑协同处置、气相抽提技术、生物通风技术、化学氧化技术、微生物处理、异/原位热脱附技术等。原位热脱附技术是在原位对土壤进行加热，使其中的挥发性有机污染物达到从土壤脱附的温度，通过气相将污染物转移至地面，从而进一步进行收集处理的工艺。原位热脱附技术相对于其他技术，具有开挖少，二次污染小，处理效果好等特点。但是由于土壤尾气组成复杂，目前没有针对原位热脱附尾气的理想的处理系统，因此，需要提供一种污染土壤热脱附有机尾气处理集成系统。
发明内容
本发明的目的是提供一种污染土壤热脱附有机尾气处理集成系统，对于污染土壤热脱附有机尾气(即土壤抽提气)采用两级次除水，一次冷凝，除去尾气中的水和水蒸气；再对尾气进行调温、调湿，通过吸附介质完成挥发性组分从气相中脱除；对吸附饱和的吸附介质，采用热脱附、冷凝回收及分相收集，实现挥发性有机物的集中收集。
为了实现上述目的，本发明的一方面提供一种污染土壤热脱附有机尾气处理集成系统，该有机尾气处理集成系统包括依次连接的预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元，以及控制单元；
所述预处理分离单元包括第一汽水分离器；
所述冷凝降温单元包括：降温换热装置和第二汽水分离器，所述降温换热装置的入口与所述预处理分离单元相连，所述第二汽水分离器的出口与所述真空提供单元相连；
所述真空提供单元包括至少一台真空泵或真空风机；
所述有机尾气脱除单元包括：预处理调温调湿装置、吸附装置和配套再生装置；所述预处理调温调湿装置与所述吸附装置连接，所述配套再生装置用于吸附装置的吸附介质的再生和解吸气的分离；
所述控制单元分别与预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元相连用于控制各单元的自动化运行。
本发明的另一方面提供一种污染土壤热脱附有机尾气处理方法，该处理方法采用上述污染土壤热脱附有机尾气处理集成系统进行，该处理方法包括：
S1.土壤抽提气经过第一汽水分离器分离除去冷凝液和土壤颗粒；
S2.经过所述第一汽水分离器处理后的气相在降温换热装置中进行降温和冷凝，然后进入第二汽水分离器进行分离，水进入第二汽水分离器的底部，气相从第二汽水分离器上部排出，经真空提供单元进入有机尾气脱除单元；
S3.进入有机尾气脱除单元的气相在预处理调温调湿装置中调节温度和湿度，然后进入吸附装置，与吸附装置中的吸附介质接触，去除其中的有机气体，得到排放气；
S4.当吸附装置中的吸附介质达到饱和时，通过配套再生装置对吸附介质进行再生处理。
利用本发明的污染土壤热脱附有机尾气处理集成系统处理原位热脱附尾气，土壤热脱附有机尾气在真空提供单元的驱动下，经预处理分离单元和降温冷凝系统除去可冷凝组分，不可冷凝组分经有机尾气脱除单元处理后达标排放；有机尾气脱除单元的吸附介质经解吸再生，有机尾气脱除单元的再生气相经冷凝将有机物以液相形式收集处理；通过控制单元实现对预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元的运行监控和自动控制。
本发明的污染土壤热脱附有机尾气处理集成系统能够实现原位热脱附尾气的高效处理，处理效果好，有机物去除率高。
本发明的其它特征和优点将在随后具体实施方式部分予以详细说明。
附图说明
通过结合附图对本发明示例性实施方式进行更详细的描述，本发明的上述以及其它目的、特征和优势将变得更加明显，其中，在本发明示例性实施方式中，相同的参考标号通常代表相同部件。
图1示出了根据本发明的一个实施例的污染土壤热脱附有机尾气处理集成系统的示意图。
图2示出了根据本发明的一个实施例的污染土壤热脱附有机尾气处理集成系统的设备连接示意图。
附图标记说明：
1-预处理分离单元；2-冷凝降温单元；3-真空提供单元；4-有机尾气脱除单元；5-控制单元；6-第一汽水分离器；7-第一换热器；8-第二汽水分离器；9-冷却水塔；10-真空冷凝撬装；11-真空风机；12-真空提供系统撬装；13-第二换热器；14-冷干机；15-第一吸附箱；16-第二吸附箱；17-冷凝器；18-再生热源气供应装置；19-排放烟囱；20-三相分离器；21-轻相储槽；22- 废水槽；23-重相储槽；24-有机尾气脱除系统撬装
具体实施方式
下面将更详细地描述本发明的优选实施方式。虽然以下描述了本发明的优选实施方式，然而应该理解，可以以各种形式实现本发明而不应被这里阐述的实施方式所限制。相反，提供这些实施方式是为了使本发明更加透彻和完整，并且能够将本发明的范围完整地传达给本领域的技术人员。
本发明的一方面提供一种污染土壤热脱附有机尾气处理集成系统，该有机尾气处理集成系统包括依次连接的预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元，以及控制单元；
所述预处理分离单元包括第一汽水分离器；
所述冷凝降温单元包括：降温换热装置和第二汽水分离器，所述降温换热装置的入口与所述预处理分离单元相连，所述第二汽水分离器的出口与所述真空提供单元相连；
所述真空提供单元包括至少一台真空泵或真空风机；
所述有机尾气脱除单元包括：预处理调温调湿装置、吸附装置和配套再生装置；所述预处理调温调湿装置与所述吸附装置连接，所述配套再生装置用于吸附装置的吸附介质的再生和解吸气的分离；
所述控制单元分别与预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元相连用于控制各单元的自动化运行。
本发明中，所述控制单元的作用是实现控制预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元的自动化运行，所述控制单元可以包括传感器、执行机构和相关的计算机及其处理系统，控制单元与上述各单元可以通过通讯控制线路连接并实现通讯。
本发明中，所述预处理分离单元和冷凝降温单元均还包括温度计、压力表、流量计、液位计和排液泵，通过上述仪表对过程参数进行监控，上 述仪表均与控制单元通信连接或者电性连接，通过控制单元来保证系统自动化运行。其中，当液位计显示液位到达高位时，排液泵自动启动，当液位计显示液位降到低位时，排液泵自动停止，从而保证第一汽水分离器和第二汽水分离器的正常运行。
本发明中，所述真空提供单元还包括防雨隔音设施和相关监测仪表。
本发明中，所述有机尾气脱除单元还包括温度计、压力表和调节阀等控制仪表，上述控制仪表均与控制单元通信连接或者电性连接，通过控制单元进行集中控制，完成运行过程的调温调湿、吸附、脱附、三相分离等操作，确保有机尾气脱除单元的安全稳定运行。
优选地，所述降温换热装置包括第一换热器和与所述第一换热器连通的冷却水塔，所述第一换热器与所述冷却水塔间设置有循环水泵；或者，所述降温换热装置为集成蒸发式冷凝器。
本发明中，来自预处理分离单元的气相进入第一换热器，热量被冷却水塔带走，进一步冷凝和降温；降温后的水和气进入第二汽水分离器；第一换热器和冷却水塔间设置有循环水泵，循环水泵能够将冷却水塔的冷却水送至第一换热器进行换热，换热后的水再进一步回到冷却水塔降温冷却。
作为优选方案，本发明中，所述吸附装置还与排放烟囱连通，用于排放符合标准的排放气。
优选地，所述第一换热器为板式换热器或列管式换热器，所述冷却水塔为开式冷却水塔或闭式冷却水塔。
优选地，所述预处理调温调湿装置为自耦合调温调湿装置，包括第二换热器和冷干机，所述第二换热器的一个出口与所述冷干机的入口连通，所述冷干机的出口与所述第二换热器的一个入口连通。
本发明中，来自真空提供单元的气相进入第二换热器的热侧降温，然后进入冷干机，经冷干机进一步降温除水后进入第二换热器的冷测升温，调节相对湿度，进入吸附装置前，将气相的温度湿度调节至最佳条件。
优选地，所述吸附装置包括交替连入系统的第一吸附箱和第二吸附箱。
作为一种优选的实施方式，所述吸附装置的吸附介质为活性炭纤维或活性炭颗粒。
优选地，所述配套再生装置包括再生热源气供应装置、冷凝器、三相分离器、轻相储槽、废水槽和重相储槽；所述再生热源气供应装置与所述吸附装置连通，所述冷凝器与所述三相分离器连通，所述三相分离器分别与所述轻相储槽、废水槽和重相储槽连通。
作为一种优选的实施方式，配套再生装置中的冷凝器采用列管式换热器进行冷凝降温处理。
优选地，所述再生热源气供应装置供应水蒸气或者100-200℃的氮气。
优选地，所述预处理分离单元和冷凝降温单元撬装为一个模块，所述真空提供单元撬装为一个模块，所述有机尾气脱除单元撬装为一个模块。
本发明中，将各单元采用撬装模式进行集成，便于转场运输和设备的安装。
本发明的另一方面提供一种污染土壤热脱附有机尾气处理方法，该处理方法采用上述污染土壤热脱附有机尾气处理集成系统进行，该处理方法包括：
S1.土壤抽提气经过第一汽水分离器分离除去冷凝液和土壤颗粒；
S2.经过所述第一汽水分离器处理后的气相在降温换热装置中进行降温和冷凝，然后进入第二汽水分离器进行分离，水进入第二汽水分离器的底部，气相从第二汽水分离器上部排出，经真空提供单元进入有机尾气脱除单元；
S3.进入有机尾气脱除单元的气相在预处理调温调湿装置中调节温度和湿度，然后进入吸附装置，与吸附装置中的吸附介质接触，去除其中的有机气体，得到排放气；
S4.当吸附装置中的吸附介质达到饱和时，通过配套再生装置对吸附介 质进行再生处理。
根据本发明，优选地，所述再生处理包括：
(1)停止吸附装置的有机尾气进气，通入再生热源气；
(2)所述吸附介质中的有机物在热作用下解吸，以气相脱出所述吸附装置进入冷凝器冷凝；
(3)然后进入三相分离器分离，得到比水轻的有机相、比水重的有机相以及水，分别进入轻相储槽、重相储槽和废水槽。
以下通过实施例进一步说明本发明：
实施例1
如图1-图2所示，本实施例提供一种污染土壤热脱附有机尾气处理集成系统，该有机尾气处理集成系统包括依次连接的预处理分离单元1、冷凝降温单元2、真空提供单元3和有机尾气脱除单元4，以及控制单元5；所述预处理分离单元1包括第一汽水分离器6；所述冷凝降温单元2包括：降温换热装置和第二汽水分离器8，所述降温换热装置的入口与所述预处理分离单元1相连，所述第二汽水分离器8的出口与所述真空提供单元3相连；所述真空提供单元3包括一台真空风机11；所述有机尾气脱除单元4包括：预处理调温调湿装置、吸附装置和配套再生装置；所述预处理调温调湿装置与所述吸附装置连接，所述配套再生装置用于吸附装置的吸附介质的再生和解吸气的分离；所述控制单元5分别与预处理分离单元1、冷凝降温单元2、真空提供单元3和有机尾气脱除单元4相连用于控制各单元的自动化运行；其中，所述降温换热装置包括第一换热器7和与所述第一换热器7连通的冷却水塔9，所述第一换热器7与所述冷却水塔9间设置有循环水泵(未示出)；所述第一换热器7为板式换热器，所述冷却水塔9为开式冷却水塔；所述预处理调温调湿装置为自耦合调温调湿装置，包括第二换热器13和冷干机14，所述第二换热器13的一个出口与所述冷干机14的入口连通，所述冷干机14的出口与所述第二换热器13的一个入口连通；所述 吸附装置包括交替连入系统的第一吸附箱15和第二吸附箱16；所述配套再生装置包括再生热源气供应装置18、冷凝器17、三相分离器20、轻相储槽21、废水槽22和重相储槽23；所述再生热源气供应装置18与所述吸附装置连通，所述冷凝器17与所述三相分离器20连通，所述三相分离器20分别与所述轻相储槽21、废水槽22和重相储槽23连通；所述再生热源气供应装置18供应水蒸气；所述预处理分离单元1和冷凝降温单元2撬装为一个模块，形成真空冷凝撬装10，所述真空提供单元撬装为一个模块，形成真空提供系统撬装12，所述有机尾气脱除单元撬装为一个模块，形成有机尾气脱除系统撬装24。
工作时，土壤抽提气经过第一汽水分离器6分离除去冷凝液和土壤颗粒；经过所述第一汽水分离器6处理后的气相在降温换热装置中进行降温和冷凝，然后进入第二汽水分离器8进行分离，水进入第二汽水分离器8的底部，气相从第二汽水分离器8上部排出，经真空提供单元3进入有机尾气脱除单元4；进入有机尾气脱除单元4的气相在预处理调温调湿装置中调节温度和湿度，然后进入吸附装置，与吸附装置中的吸附介质接触，去除其中的有机气体，得到排放气，通过排放烟囱19排放；当吸附装置中的吸附介质达到饱和时，通过配套再生装置对吸附介质进行再生处理；再生处理时：停止吸附装置的有机尾气进气，通入再生热源气；所述吸附介质中的有机物在热作用下解吸，以气相脱出所述吸附装置进入冷凝器17冷凝；然后进入三相分离器20分离，得到比水轻的有机相、比水重的有机相以及水，分别进入轻相储槽21、重相储槽23和废水槽22。
以上已经描述了本发明的实施例，上述说明是示例性的，并非穷尽性的，并且也不限于所披露的实施例。在不偏离所说明的实施例的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。

Claims (10)

  1. 一种污染土壤热脱附有机尾气处理集成系统，其特征在于，该有机尾气处理集成系统包括依次连接的预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元，以及控制单元；
    所述预处理分离单元包括第一汽水分离器；
    所述冷凝降温单元包括：降温换热装置和第二汽水分离器，所述降温换热装置的入口与所述预处理分离单元相连，所述第二汽水分离器的出口与所述真空提供单元相连；
    所述真空提供单元包括至少一台真空泵或真空风机；
    所述有机尾气脱除单元包括：预处理调温调湿装置、吸附装置和配套再生装置；所述预处理调温调湿装置与所述吸附装置连接，所述配套再生装置用于吸附装置的吸附介质的再生和解吸气的分离；
    所述控制单元分别与预处理分离单元、冷凝降温单元、真空提供单元和有机尾气脱除单元相连，用于控制各单元的自动化运行。
  2. 根据权利要求1所述的污染土壤热脱附有机尾气处理集成系统，其中，所述降温换热装置包括第一换热器和与所述第一换热器连通的冷却水塔，所述第一换热器与所述冷却水塔间设置有循环水泵；或者，所述降温换热装置为集成蒸发式冷凝器。
  3. 根据权利要求2所述的污染土壤热脱附有机尾气处理集成系统，其中，所述第一换热器为板式换热器或列管式换热器，所述冷却水塔为开式冷却水塔或闭式冷却水塔。
  4. 根据权利要求1所述的污染土壤热脱附有机尾气处理集成系统，其中，所述预处理调温调湿装置为自耦合调温调湿装置，包括第二换热器和 冷干机，所述第二换热器的一个出口与所述冷干机的入口连通，所述冷干机的出口与所述第二换热器的一个入口连通。
  5. 根据权利要求1所述的污染土壤热脱附有机尾气处理集成系统，其中，所述吸附装置包括交替连入系统的第一吸附箱和第二吸附箱。
  6. 根据权利要求1所述的污染土壤热脱附有机尾气处理集成系统，其中，所述配套再生装置包括再生热源气供应装置、冷凝器、三相分离器、轻相储槽、废水槽和重相储槽；所述再生热源气供应装置与所述吸附装置连通，所述冷凝器与所述三相分离器连通，所述三相分离器分别与所述轻相储槽、废水槽和重相储槽连通。
  7. 根据权利要求6所述的污染土壤热脱附有机尾气处理集成系统，其中，所述再生热源气供应装置供应水蒸气或者100-200℃的氮气。
  8. 根据权利要求1所述的污染土壤热脱附有机尾气处理集成系统，其中，所述预处理分离单元和冷凝降温单元撬装为一个模块，所述真空提供单元撬装为一个模块，所述有机尾气脱除单元撬装为一个模块。
  9. 一种污染土壤热脱附有机尾气处理方法，其特征在于，该处理方法采用权利要求1-8中任意一项所述的污染土壤热脱附有机尾气处理集成系统进行，该处理方法包括：
    S1.土壤抽提气经过第一汽水分离器分离除去冷凝液和土壤颗粒；
    S2.经过所述第一汽水分离器处理后的气相在降温换热装置中进行降温和冷凝，然后进入第二汽水分离器进行分离，水进入第二汽水分离器的底部，气相从第二汽水分离器上部排出，经真空提供单元进入有机尾气脱 除单元；
    S3.进入有机尾气脱除单元的气相在预处理调温调湿装置中调节温度和湿度，然后进入吸附装置，与吸附装置中的吸附介质接触，去除其中的有机气体，得到排放气；
    S4.当吸附装置中的吸附介质达到饱和时，通过配套再生装置对吸附介质进行再生处理。
  10. 根据权利要求9所述的污染土壤热脱附有机尾气处理方法，其中，所述再生处理包括：
    (1)停止吸附装置的有机尾气进气，通入再生热源气；
    (2)所述吸附介质中的有机物在热作用下解吸，以气相脱出所述吸附装置进入冷凝器冷凝；
    (3)然后进入三相分离器分离，得到比水轻的有机相、比水重的有机相以及水，分别进入轻相储槽、重相储槽和废水槽。
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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658165A (zh) * 2013-12-10 2014-03-26 北京鼎实环境工程有限公司 一种节能型有机污染土壤热脱附修复处理系统
CN203621088U (zh) * 2013-12-10 2014-06-04 北京鼎实环境工程有限公司 一种节能型有机污染土壤热脱附修复处理系统
US20140373712A1 (en) * 2011-08-17 2014-12-25 Grant Geckeler Voc source removal and off gas purification system
WO2015010368A1 (zh) * 2013-07-25 2015-01-29 天津大学 可资源化的挥发性有机尾气处理方法及撬装移动装置
CN104906916A (zh) * 2015-06-03 2015-09-16 江苏华讯环境科技有限公司 挥发性有机污染场地土壤修复废气处理系统及其工艺
CN204973468U (zh) * 2015-06-03 2016-01-20 江苏华讯环境科技有限公司 挥发性有机污染场地土壤修复废气处理系统
CN205289226U (zh) * 2015-12-30 2016-06-08 北京高能时代环境技术股份有限公司 用于处理voc/svoc污染土壤的原位热脱附系统
CN108480381A (zh) * 2018-04-23 2018-09-04 天津大学 一种有机污染土壤低能耗热脱附-急冷-吸附耦合修复方法
CN108704932A (zh) * 2018-07-12 2018-10-26 苏州市环境科学研究所 一种热脱附实验装置
CN109603412A (zh) * 2018-11-30 2019-04-12 北京高能时代环境技术股份有限公司 污染土壤热脱附有机尾气处理集成系统及处理方法
CN209464832U (zh) * 2018-11-30 2019-10-08 北京高能时代环境技术股份有限公司 污染土壤热脱附有机尾气处理集成系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3212446B2 (ja) * 1994-06-06 2001-09-25 オルガノ株式会社 有機塩素化合物汚染土壌の浄化処理設備
US8210772B2 (en) * 2009-03-23 2012-07-03 Antea Usa, Inc. Soil vapor extraction remediation system with vapor stream separation
CN104958993A (zh) * 2015-06-23 2015-10-07 江苏中远环保科技有限公司 一种新型的颗粒活性炭吸附和水蒸气间接加热真空脱附再生工艺及其装置
CN106734151A (zh) * 2017-01-11 2017-05-31 北京高能时代环境技术股份有限公司 用于VOCs污染场地的电阻加热原位热脱附修复系统
CN107685073B (zh) * 2017-09-26 2024-05-14 上海格林曼环境技术有限公司 一种用于污染场地的集中燃烧式原位热脱附修复装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140373712A1 (en) * 2011-08-17 2014-12-25 Grant Geckeler Voc source removal and off gas purification system
WO2015010368A1 (zh) * 2013-07-25 2015-01-29 天津大学 可资源化的挥发性有机尾气处理方法及撬装移动装置
CN103658165A (zh) * 2013-12-10 2014-03-26 北京鼎实环境工程有限公司 一种节能型有机污染土壤热脱附修复处理系统
CN203621088U (zh) * 2013-12-10 2014-06-04 北京鼎实环境工程有限公司 一种节能型有机污染土壤热脱附修复处理系统
CN104906916A (zh) * 2015-06-03 2015-09-16 江苏华讯环境科技有限公司 挥发性有机污染场地土壤修复废气处理系统及其工艺
CN204973468U (zh) * 2015-06-03 2016-01-20 江苏华讯环境科技有限公司 挥发性有机污染场地土壤修复废气处理系统
CN205289226U (zh) * 2015-12-30 2016-06-08 北京高能时代环境技术股份有限公司 用于处理voc/svoc污染土壤的原位热脱附系统
CN108480381A (zh) * 2018-04-23 2018-09-04 天津大学 一种有机污染土壤低能耗热脱附-急冷-吸附耦合修复方法
CN108704932A (zh) * 2018-07-12 2018-10-26 苏州市环境科学研究所 一种热脱附实验装置
CN109603412A (zh) * 2018-11-30 2019-04-12 北京高能时代环境技术股份有限公司 污染土壤热脱附有机尾气处理集成系统及处理方法
CN209464832U (zh) * 2018-11-30 2019-10-08 北京高能时代环境技术股份有限公司 污染土壤热脱附有机尾气处理集成系统

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