WO2023066134A1 - System and method for preparing nitrogen from waste gas obtained by recovering co2 via chemical method - Google Patents

System and method for preparing nitrogen from waste gas obtained by recovering co2 via chemical method Download PDF

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WO2023066134A1
WO2023066134A1 PCT/CN2022/125136 CN2022125136W WO2023066134A1 WO 2023066134 A1 WO2023066134 A1 WO 2023066134A1 CN 2022125136 W CN2022125136 W CN 2022125136W WO 2023066134 A1 WO2023066134 A1 WO 2023066134A1
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nitrogen
gas
air inlet
filter
waste gas
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Chinese (zh)
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李玉雪
戚励
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碳和科技(北京)有限公司
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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
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/045—Physical processing only by adsorption in solids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0001—Separation or purification processing
    • C01B2210/0009—Physical processing
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0001—Separation or purification processing
    • C01B2210/0009—Physical processing
    • C01B2210/0014—Physical processing by adsorption in solids
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0045—Oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0051—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0062—Water
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0068—Organic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Definitions

  • the invention belongs to the technical field of recovery and utilization of nitrogen, and in particular relates to a system and method for producing nitrogen from waste gas recovered by chemical methods.
  • the nitrogen used in the factory is obtained through air separation nitrogen production, and there are two methods: cryogenic and PSA pressure swing adsorption. No matter which method is used, the raw material gas used is air, and the nitrogen content is 78%.
  • the capture and recycling of carbon dioxide in flue gas is an important measure to achieve the goal of "double carbon".
  • the object of the present invention is to provide a kind of system that produces nitrogen from the exhaust gas of chemical recovery CO2 , to solve the above-mentioned technical problem.
  • This system can process the waste gas after chemical recovery of CO2 to produce nitrogen. It can not only recover high-content nitrogen in the vented air (exhaust gas after chemical recovery of CO2 ), but also recover the pressure of the vented air, which has an energy-saving effect obvious.
  • the invention also provides a method for producing nitrogen from waste gas of CO2 recovered by chemical method.
  • the system for producing nitrogen from the waste gas of chemical recovery of CO of the present invention adopts the following technical scheme: a system for producing nitrogen from the waste gas of chemical recovery of CO , said system comprising a rough treatment device and a deep purification device and a nitrogen enrichment device; the rough treatment device is used to initially remove solvent impurities in the exhaust gas to obtain a preliminary clean gas; the deep purification device includes a compressor, a deep water removal device and a second filter connected in sequence, and the compression The air inlet of the machine is connected with the gas outlet of the rough treatment device, and the deep purification device is used to carry out deep purification to the preliminary clean gas to obtain deep purification gas; the nitrogen concentration device includes an adsorption tower, and the adsorption tower The gas inlet is connected with the gas outlet of the second filter, and the adsorption tower is used for performing pressure swing adsorption on the deeply purified gas to produce nitrogen.
  • the deep water removal device includes a water separation tank and a dryer, the air inlet of the water separation tank is connected to the air outlet of the compressor, and the air outlet of the water separation tank is connected to the air outlet of the dryer The air inlet is connected, and the air outlet of the dryer is connected with the air inlet of the second filter.
  • the rough treatment device includes a mist eliminator, a cooler, a gas-liquid separator and a first filter
  • the gas outlet of the mist eliminator is connected with the air inlet of the cooler
  • the air outlet of the cooler is The air outlet is connected to the air inlet of the gas-liquid separator
  • the air outlet of the gas-liquid separator is connected to the air inlet of the first filter
  • the air outlet of the first filter is connected to the compressor connected to the air inlet of the machine.
  • the cooler lowers the temperature of the gas to 30-35° C.
  • the first filter is used to remove any one or a combination of sulfide, nitrogen oxide, water and dust.
  • At least two adsorption towers are provided to form an adsorption tower group.
  • a PLC-controlled pneumatic valve is provided on the pipeline connecting the adsorption tower group to the gas outlet of the second filter.
  • adsorption towers there are two adsorption towers, and the two adsorption towers are arranged in parallel.
  • the gas outlet at the top of the adsorption tower is connected to the finished nitrogen storage tank through a nitrogen gas outlet pipe, and a PLC is provided on the nitrogen gas outlet pipe. Control pneumatic valves.
  • the method for producing nitrogen from the waste gas of chemical recovery of CO of the present invention adopts the following technical scheme: a method for producing nitrogen from the waste gas of chemical recovery of CO 2 adopts the above-mentioned system to produce nitrogen.
  • the waste gas after recovering CO by the chemical method contains nitrogen, oxygen, carbon dioxide, water and organic amines, the volume percentage of the nitrogen is more than 90%, and the volume percentage of the oxygen is 8-12%, so The volume percentage of the carbon dioxide is 0.5-2%, and the volume percentage of the water is 5-9%.
  • the pressure of the deeply purified gas is 0.7-1.0 MPa
  • the dust content is ⁇ 0.01 ⁇ m
  • the pressure dew point is -20-30°C.
  • the system for producing nitrogen from the waste gas of CO recovered by chemical method of the present invention can process the waste gas after CO recovered by chemical method to produce nitrogen, and not only can reclaim the air (recovered CO by chemical method )
  • the high content of nitrogen in the exhaust gas can also recover the pressure of the released air, and the energy saving effect is obvious.
  • the system of the present invention for producing nitrogen from the waste gas of recovering CO2 by chemical method has a high degree of automation of the overall equipment, good energy-saving effect, can be vigorously promoted in industry, and is one of the measures for realizing carbon emission reduction.
  • Fig. 1 is the structural representation of the system for producing nitrogen from the waste gas of chemical method recovery CO of the embodiment of the present invention
  • 100-coarse treatment device 200-deep purification device; 300-nitrogen concentration device;
  • 110-demister 120-cooler; 130-gas-liquid separator; 140-first filter;
  • the present invention provides a method for recovering CO2 from chemical methods A system for producing nitrogen from waste gas.
  • the system of producing nitrogen from the waste gas of chemical recovery CO of the present invention comprises: rough treatment device 100, depth purification device 200 and nitrogen concentrator 300; solvent impurity to obtain preliminary clean gas;
  • the deep purification device 200 includes a compressor 210, a deep water removal device and a second filter 240 connected in sequence, and the air inlet of the compressor 210 is connected with the gas outlet of the rough treatment device 100, and the depth Purification device 200 is used to carry out deep purification to preliminary clean gas to obtain deep purification gas;
  • Nitrogen enrichment device 300 comprises adsorption tower 310, and the gas inlet of adsorption tower 310 is connected with the gas outlet of second filter 240, and adsorption tower 310 is used for Pressure swing adsorption is performed on deeply purified gas to produce nitrogen.
  • the system for producing nitrogen from the exhaust gas of CO recovered by chemical method of the present invention can process the exhaust gas recovered by chemical CO to produce nitrogen, and not only can be recycled into the air (exhaust gas recovered by chemical CO 2 )
  • the high content of nitrogen can also recover the pressure of the released air, and the energy saving effect is obvious.
  • the depth water removal device includes a water separation tank 220 and a dryer 230, the air inlet of the water separation tank 220 is connected to the air outlet of the compressor 210, and the air outlet of the water separation tank 220 is connected to the air outlet of the dryer 230.
  • the air inlet is connected, and the air outlet of the dryer 230 is connected with the air inlet of the second filter 240 .
  • the compressor 210 is used to boost the pressure of the preliminary clean gas, and then the water is divided by the water separation tank 220, and then enters the dryer 230 for secondary drying and purification.
  • the water in the preliminary clean gas can be deeply removed, and the trace amount of sulfide carried by the front end can also be removed.
  • the gas enters the second filter 240 to further remove trace sulfides, nitrogen oxides, water and dust to obtain deeply purified gas (for example, the deeply purified gas can reach the following levels: pressure 0.7-1.0MPa, dust content ⁇ 0.01 ⁇ m, dew point -20 ⁇ -30°C).
  • the rough treatment device 100 includes a mist eliminator 110, a cooler 120, a gas-liquid separator 130 and a first filter 140, the gas outlet of the mist eliminator 110 is connected to the air inlet of the cooler 120,
  • the gas outlet of the cooler 120 is connected with the gas inlet of the gas-liquid separator 130
  • the gas outlet of the gas-liquid separator 130 is connected with the gas inlet of the first filter 140
  • the gas outlet of the first filter 140 is connected with the compressor 210 connected to the air inlet.
  • the solvent vapor carried by the waste gas after the chemical recovery of CO2 can be preliminarily demisted and intercepted, and then enter the cooler 120 to cool down, and the water vapor carried in the waste gas can be roughly dehydrated.
  • the cooler 120 reduces the temperature of the gas to 30-35°C, and the first filter 140 is used to remove any one or a combination of sulfides, nitrogen oxides, water and dust.
  • At least two adsorption towers 310 are provided to form an adsorption tower group.
  • the pipeline connecting the adsorption tower group with the gas outlet of the second filter 230 is provided with a PLC-controlled pneumatic valve.
  • the deeply purified gas enters different adsorption towers 310 for adsorption and separation through the pneumatic valve controlled by PLC.
  • the finished nitrogen gas is collected from the top of the tower and enters the finished nitrogen gas storage tank for downstream use.
  • adsorption towers 310 there are two adsorption towers 310, and the two adsorption towers 310 are arranged in parallel.
  • the gas outlet at the top of the adsorption tower 310 is connected to the finished nitrogen storage tank through a nitrogen gas outlet pipe, and the nitrogen gas outlet pipe is provided with PLC control. pneumatic valve.
  • the present invention also provides a method for producing nitrogen from the waste gas after recovering CO2 by chemical method, and adopts the above-mentioned system to produce nitrogen.
  • chemical method recovers CO Contain nitrogen, oxygen, carbon dioxide, water and organic amine in the waste gas after CO , the content of nitrogen is more than 90% (volume percent), and the content of oxygen is 8 ⁇ 12 % (volume percentage), the content of carbon dioxide is 0.5-2% (volume percentage), and the content of water is 5-9% (volume percentage).
  • the pressure of the deeply purified gas is 0.7-1.0 MPa
  • the dust content is ⁇ 0.01 ⁇ m
  • the pressure dew point is -20--30°C.
  • the method for producing nitrogen from the waste gas after chemical recovery of CO can be:
  • the air discharge in the present embodiment is about 47 °C, 10KPa, nitrogen 92% (volume percentage), oxygen 10% (volume percent), carbon dioxide 1% (volume percent), water 7% (volume percent) and a trace of organic amine.
  • the preliminary clean gas enters the compressor 210 and is compressed to 0.8MPa. After further water removal by the water separator tank 220, it enters the dryer 230 for deep dehydration and drying; after that, it enters the second filter 240 for dust removal to ensure the dust content in the air. ⁇ 0.01 ⁇ m, pressure dew point -20 °C, can reach the adsorption level (i.e. get deeply purified gas).
  • the deeply purified gas enters the nitrogen concentrator 300 (adsorption tower group), and after pressure swing adsorption, 0.6 MPa, 20000 Nm 3 /h, and 99.5% purity of finished nitrogen are produced at the top of the tower.
  • the gas production of the present invention is increased by 29%, and the energy-saving effect is obvious.

Abstract

The present invention belongs to the technical field of nitrogen recovery and utilization, and specifically relates to a system and method for preparing nitrogen from waste gas obtained by recovering CO2 via a chemical method. The system comprises a rough treatment device, a deep purification device and a nitrogen concentration device, wherein the deep purification device comprises a compressor, a deep water removal device and a second filter which are connected in sequence, and an air inlet of the compressor is connected to an air outlet of the rough treatment device; and the nitrogen concentration device comprises an absorption tower, and an air inlet of the absorption tower is connected to an air outlet of the second filter. The system can treat waste gas obtained after CO2 is recovered by means of a chemical method so as to prepare nitrogen, such that not only can high-content nitrogen in vent gas (waste gas obtained after CO2 is recovered by means of a chemical method) be recovered, but the pressure of the vent gas can also be recovered, generating an obvious energy-saving effect.

Description

一种从化学法回收CO 2的废气中制取氮气的系统及方法 A CO recovery from chemical method 2 System and method for producing nitrogen from waste gas 技术领域technical field
本发明属于氮气的回收利用技术领域，具体涉及一种从化学法回收CO 2的废气中制取氮气的系统及方法。 The invention belongs to the technical field of recovery and utilization of nitrogen, and in particular relates to a system and method for producing nitrogen from waste gas recovered by chemical methods.
背景技术Background technique
目前工厂使用的氮气，都是通过空分制氮获取，有深冷和PSA变压吸附两种方法。不管是哪一种方法，其使用的原料气都是空气，氮气含量为78％。At present, the nitrogen used in the factory is obtained through air separation nitrogen production, and there are two methods: cryogenic and PSA pressure swing adsorption. No matter which method is used, the raw material gas used is air, and the nitrogen content is 78%.
对烟道气中二氧化碳进行捕集回收利用，是实现“双碳”目标的一种重要措施。烟道气中二氧化碳的捕集，工业化主要有两种方法：化学吸收法(俗称有机胺法)和物理吸附法，二种方法各有优势。两种方法回收二氧化碳后都会产生放空废气，其放空气的成分虽有不同，但是其中氮气含量均远高于空气中78％的氮气含量，其中化学吸收法产生的放空气中氮气含量约为90％以上，物理吸附法产生的放空气中氮气含量约为85～89％。现有技术中通常会将放空废气直接排放，而以空气为原料来制取氮气，造成能源的浪费。The capture and recycling of carbon dioxide in flue gas is an important measure to achieve the goal of "double carbon". There are two main industrial methods for capturing carbon dioxide in flue gas: chemical absorption (commonly known as organic amine method) and physical adsorption, both of which have their own advantages. After recovering carbon dioxide, the two methods will produce venting waste gas. Although the composition of the venting air is different, the nitrogen content in it is much higher than the 78% nitrogen content in the air, and the nitrogen content in the venting air produced by the chemical absorption method is about 90%. % or more, the nitrogen content in the vented air produced by the physical adsorption method is about 85-89%. In the prior art, the vented waste gas is usually discharged directly, and nitrogen is produced from air, resulting in waste of energy.
因此，需要提供一种针对上述现有技术不足的改进技术方案。Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies in the prior art.
发明内容Contents of the invention
本发明的目的在于提供一种从化学法回收CO 2的废气中制取氮气的系统，以解决上述技术问题。该系统可对化学法回收CO 2后的废气进行处理以制取氮气，不仅可以回收放空气(化学法回收CO 2后的废气)中的高含量氮气，还可以回收放空气的压力，节能效果明显。 The object of the present invention is to provide a kind of system that produces nitrogen from the exhaust gas of chemical recovery CO2 , to solve the above-mentioned technical problem. This system can process the waste gas after chemical recovery of CO2 to produce nitrogen. It can not only recover high-content nitrogen in the vented air (exhaust gas after chemical recovery of CO2 ), but also recover the pressure of the vented air, which has an energy-saving effect obvious.
本发明还提供了一种从化学法回收CO2的废气中制取氮气的方法。The invention also provides a method for producing nitrogen from waste gas of CO2 recovered by chemical method.
本发明的从化学法回收CO 2的废气中制取氮气的系统采用如下技术方案：一种从化学法回收CO 2的废气中制取氮气的系统，所述系统包括粗处理装置、深度净化装置和氮气浓缩装置；所述粗处理装置用于初步去 除废气中的溶剂杂质以得到初步洁净气体；所述深度净化装置包括依次相连的压缩机、深度除水装置和第二过滤器，所述压缩机的进气口与所述粗处理装置的出气口相连，所述深度净化装置用于对初步洁净气体进行深度净化以得到深度净化气体；所述氮气浓缩装置包括吸附塔，所述吸附塔的进气口与所述第二过滤器的出气口相连，所述吸附塔用于对所述深度净化气体进行变压吸附以制取氮气。 The system for producing nitrogen from the waste gas of chemical recovery of CO of the present invention adopts the following technical scheme: a system for producing nitrogen from the waste gas of chemical recovery of CO , said system comprising a rough treatment device and a deep purification device and a nitrogen enrichment device; the rough treatment device is used to initially remove solvent impurities in the exhaust gas to obtain a preliminary clean gas; the deep purification device includes a compressor, a deep water removal device and a second filter connected in sequence, and the compression The air inlet of the machine is connected with the gas outlet of the rough treatment device, and the deep purification device is used to carry out deep purification to the preliminary clean gas to obtain deep purification gas; the nitrogen concentration device includes an adsorption tower, and the adsorption tower The gas inlet is connected with the gas outlet of the second filter, and the adsorption tower is used for performing pressure swing adsorption on the deeply purified gas to produce nitrogen.
优选地，所述深度除水装置包括分水罐和干燥机，所述分水罐的进气口与所述压缩机的出气口相连，所述分水罐的出气口与所述干燥机的进气口相连，所述干燥机的出气口与所述第二过滤器的进气口相连。Preferably, the deep water removal device includes a water separation tank and a dryer, the air inlet of the water separation tank is connected to the air outlet of the compressor, and the air outlet of the water separation tank is connected to the air outlet of the dryer The air inlet is connected, and the air outlet of the dryer is connected with the air inlet of the second filter.
优选地，所述粗处理装置包括除雾器、冷却器、气液分离器和第一过滤器，所述除雾器的出气口与所述冷却器的进气口相连，所述冷却器的出气口与所述气液分离器的进气口相连，所述气液分离器的出气口与所述第一过滤器的进气口相连，所述第一过滤器的出气口与所述压缩机的进气口相连。Preferably, the rough treatment device includes a mist eliminator, a cooler, a gas-liquid separator and a first filter, the gas outlet of the mist eliminator is connected with the air inlet of the cooler, and the air outlet of the cooler is The air outlet is connected to the air inlet of the gas-liquid separator, the air outlet of the gas-liquid separator is connected to the air inlet of the first filter, and the air outlet of the first filter is connected to the compressor connected to the air inlet of the machine.
优选地，所述冷却器将气体的温度降至30～35℃，所述第一过滤器用于去除硫化物、氮氧化物、水和粉尘中的任意一种或几种的组合。Preferably, the cooler lowers the temperature of the gas to 30-35° C., and the first filter is used to remove any one or a combination of sulfide, nitrogen oxide, water and dust.
优选地，所述吸附塔至少设有两台以形成吸附塔组。Preferably, at least two adsorption towers are provided to form an adsorption tower group.
优选地，所述吸附塔组与所述第二过滤器的出气口相连的管道上设有PLC控制气动阀。Preferably, a PLC-controlled pneumatic valve is provided on the pipeline connecting the adsorption tower group to the gas outlet of the second filter.
优选地，所述吸附塔设有两台，两台所述吸附塔并联设置，所述吸附塔的塔顶出气口通过氮气出气管与成品氮气储罐相连，所述氮气出气管上设有PLC控制气动阀。Preferably, there are two adsorption towers, and the two adsorption towers are arranged in parallel. The gas outlet at the top of the adsorption tower is connected to the finished nitrogen storage tank through a nitrogen gas outlet pipe, and a PLC is provided on the nitrogen gas outlet pipe. Control pneumatic valves.
本发明的从化学法回收CO 2的废气中制取氮气的方法采用如下技术方案：一种从化学法回收CO 2后的废气中制取氮气的方法，采用如上所述的系统制取氮气。 The method for producing nitrogen from the waste gas of chemical recovery of CO of the present invention adopts the following technical scheme: a method for producing nitrogen from the waste gas of chemical recovery of CO 2 adopts the above-mentioned system to produce nitrogen.
优选地，所述化学法回收CO 2后的废气中含有氮气、氧气、二氧化碳、水和有机胺，所述氮气的体积百分数为90％以上，所述氧气的体积百分数为8～12％，所述二氧化碳的体积百分数为0.5～2％，所述水的体积百分数为5～9％。 Preferably, the waste gas after recovering CO by the chemical method contains nitrogen, oxygen, carbon dioxide, water and organic amines, the volume percentage of the nitrogen is more than 90%, and the volume percentage of the oxygen is 8-12%, so The volume percentage of the carbon dioxide is 0.5-2%, and the volume percentage of the water is 5-9%.
优选地，所述深度净化气体的压力为0.7～1.0MPa，含尘量≤0.01μm， 压力露点为-20～-30℃。Preferably, the pressure of the deeply purified gas is 0.7-1.0 MPa, the dust content is ≤0.01 μm, and the pressure dew point is -20-30°C.
有益效果：本发明的从化学法回收CO 2的废气中制取氮气的系统可对化学法回收CO 2后的废气进行处理以制取氮气，不仅可以回收放空气(化学法回收CO 2后的废气)中的高含量氮气，还可以回收放空气的压力，节能效果明显。 Beneficial effects: the system for producing nitrogen from the waste gas of CO recovered by chemical method of the present invention can process the waste gas after CO recovered by chemical method to produce nitrogen, and not only can reclaim the air (recovered CO by chemical method ) The high content of nitrogen in the exhaust gas) can also recover the pressure of the released air, and the energy saving effect is obvious.
本发明的从化学法回收CO 2的废气中制取氮气的系统的整体设备自动化程度高，节能效果好，在工业上可大力推广，是实现碳减排的措施之一。 The system of the present invention for producing nitrogen from the waste gas of recovering CO2 by chemical method has a high degree of automation of the overall equipment, good energy-saving effect, can be vigorously promoted in industry, and is one of the measures for realizing carbon emission reduction.
附图说明Description of drawings
构成本发明的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。其中：The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. in:
图1为本发明实施例的从化学法回收CO 2的废气中制取氮气的系统的结构示意图； Fig. 1 is the structural representation of the system for producing nitrogen from the waste gas of chemical method recovery CO of the embodiment of the present invention;
附图标记：Reference signs:
100-粗处理装置；200-深度净化装置；300-氮气浓缩装置；100-coarse treatment device; 200-deep purification device; 300-nitrogen concentration device;
110-除雾器；120-冷却器；130-气液分离器；140-第一过滤器；110-demister; 120-cooler; 130-gas-liquid separator; 140-first filter;
210-压缩机；220-分水罐；230-干燥机；240-第二过滤器；210-compressor; 220-water separation tank; 230-dryer; 240-second filter;
310-吸附塔。310 - Adsorption tower.
具体实施方式Detailed ways
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
下面将结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。The present invention will be described in detail below in conjunction with examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
针对目前现有技术中通常以空气为原料来制取氮气，而将氮气含量更高的、回收二氧化碳后的废气直接放空，造成能源浪费的问题，本发明提供一种从化学法回收CO 2的废气中制取氮气的系统。 Aiming at the current prior art that usually uses air as raw material to produce nitrogen, and the exhaust gas with higher nitrogen content and recovered carbon dioxide is directly emptied, resulting in energy waste, the present invention provides a method for recovering CO2 from chemical methods A system for producing nitrogen from waste gas.
如图1所示，本发明的从化学法回收CO 2的废气中制取氮气的系统包括：粗处理装置100、深度净化装置200和氮气浓缩装置300；粗处理装置100用于初步去除废气中的溶剂杂质，得到初步洁净气体；深度净化装置200包括依次相连的压缩机210、深度除水装置和第二过滤器240，压缩机210的进气口与粗处理装置100的出气口相连，深度净化装置200用于对初步洁净气体进行深度净化以得到深度净化气体；氮气浓缩装置300包括吸附塔310，吸附塔310的进气口与第二过滤器240的出气口相连，吸附塔310用于对深度净化气体进行变压吸附以制取氮气。 As shown in Figure 1, the system of producing nitrogen from the waste gas of chemical recovery CO of the present invention comprises: rough treatment device 100, depth purification device 200 and nitrogen concentrator 300; solvent impurity to obtain preliminary clean gas; the deep purification device 200 includes a compressor 210, a deep water removal device and a second filter 240 connected in sequence, and the air inlet of the compressor 210 is connected with the gas outlet of the rough treatment device 100, and the depth Purification device 200 is used to carry out deep purification to preliminary clean gas to obtain deep purification gas; Nitrogen enrichment device 300 comprises adsorption tower 310, and the gas inlet of adsorption tower 310 is connected with the gas outlet of second filter 240, and adsorption tower 310 is used for Pressure swing adsorption is performed on deeply purified gas to produce nitrogen.
本发明的从化学法回收CO 2的废气中制取氮气的系统可对化学法回收CO 2后的废气进行处理以制取氮气，不仅可以回收放空气(化学法回收CO 2后的废气)中的高含量氮气，还可以回收放空气的压力，节能效果明显。 The system for producing nitrogen from the exhaust gas of CO recovered by chemical method of the present invention can process the exhaust gas recovered by chemical CO to produce nitrogen, and not only can be recycled into the air (exhaust gas recovered by chemical CO 2 ) The high content of nitrogen can also recover the pressure of the released air, and the energy saving effect is obvious.
本发明优选实施例中，深度除水装置包括分水罐220和干燥机230，分水罐220的进气口与压缩机210的出气口相连，分水罐220的出气口与干燥机230的进气口相连，干燥机230的出气口与第二过滤器240的进气口相连。通过压缩机210对初步洁净气体进行提压，之后通过分水罐220分水，进入干燥机230进行二次干燥净化，深度脱除初步洁净气体中的水，还能除去前端携带过来的微量硫化物、氮氧化物和有机溶剂，进一步对初步洁净气体进行净化。之后，气体进入第二过滤器240中，进一步去除微量硫化物、氮氧化物、水和粉尘，得到深度净化气体(例如，深度净化气体可达到如下级别：压力0.7～1.0MPa，含尘量≤0.01μm，露点-20～-30℃)。In a preferred embodiment of the present invention, the depth water removal device includes a water separation tank 220 and a dryer 230, the air inlet of the water separation tank 220 is connected to the air outlet of the compressor 210, and the air outlet of the water separation tank 220 is connected to the air outlet of the dryer 230. The air inlet is connected, and the air outlet of the dryer 230 is connected with the air inlet of the second filter 240 . The compressor 210 is used to boost the pressure of the preliminary clean gas, and then the water is divided by the water separation tank 220, and then enters the dryer 230 for secondary drying and purification. The water in the preliminary clean gas can be deeply removed, and the trace amount of sulfide carried by the front end can also be removed. substances, nitrogen oxides and organic solvents to further purify the preliminary clean gas. After that, the gas enters the second filter 240 to further remove trace sulfides, nitrogen oxides, water and dust to obtain deeply purified gas (for example, the deeply purified gas can reach the following levels: pressure 0.7-1.0MPa, dust content≤ 0.01μm, dew point -20～-30℃).
本发明优选实施例中，粗处理装置100包括除雾器110、冷却器120、气液分离器130和第一过滤器140，除雾器110的出气口与冷却器120的进气口相连，冷却器120的出气口与气液分离器130的进气口相连，气液分离器130的出气口与第一过滤器140的进气口相连，第一过滤器140的出气口与压缩机210的进气口相连。通过设置除雾器110，可以对化学法回收CO 2后的废气携带的溶剂蒸汽进行初步除雾拦截，然后进入冷却器120降温，对废气中携带的水蒸气进行粗脱水。 In a preferred embodiment of the present invention, the rough treatment device 100 includes a mist eliminator 110, a cooler 120, a gas-liquid separator 130 and a first filter 140, the gas outlet of the mist eliminator 110 is connected to the air inlet of the cooler 120, The gas outlet of the cooler 120 is connected with the gas inlet of the gas-liquid separator 130, the gas outlet of the gas-liquid separator 130 is connected with the gas inlet of the first filter 140, and the gas outlet of the first filter 140 is connected with the compressor 210 connected to the air inlet. By installing the mist eliminator 110, the solvent vapor carried by the waste gas after the chemical recovery of CO2 can be preliminarily demisted and intercepted, and then enter the cooler 120 to cool down, and the water vapor carried in the waste gas can be roughly dehydrated.
本发明优选实施例中，冷却器120将气体的温度降至30～35℃，第一过滤器140用于去除硫化物、氮氧化物、水和粉尘中的任意一种或几种的 组合。In a preferred embodiment of the present invention, the cooler 120 reduces the temperature of the gas to 30-35°C, and the first filter 140 is used to remove any one or a combination of sulfides, nitrogen oxides, water and dust.
本发明优选实施例中，吸附塔310至少设有两台以形成吸附塔组。In a preferred embodiment of the present invention, at least two adsorption towers 310 are provided to form an adsorption tower group.
本发明优选实施例中，吸附塔组与第二过滤器230的出气口相连的管道上设有PLC控制气动阀。深度净化气体通过PLC控制气动阀，进入不同的吸附塔310进行吸附分离，吸附塔310可以是两台或多台，成品氮气从塔顶汇集后进入成品氮气储罐，用于下级使用。In a preferred embodiment of the present invention, the pipeline connecting the adsorption tower group with the gas outlet of the second filter 230 is provided with a PLC-controlled pneumatic valve. The deeply purified gas enters different adsorption towers 310 for adsorption and separation through the pneumatic valve controlled by PLC. There can be two or more adsorption towers 310. The finished nitrogen gas is collected from the top of the tower and enters the finished nitrogen gas storage tank for downstream use.
本发明优选实施例中，吸附塔310设有两台，两台吸附塔310并联设置，吸附塔310的塔顶出气口通过氮气出气管与成品氮气储罐相连，氮气出气管上设有PLC控制气动阀。In a preferred embodiment of the present invention, there are two adsorption towers 310, and the two adsorption towers 310 are arranged in parallel. The gas outlet at the top of the adsorption tower 310 is connected to the finished nitrogen storage tank through a nitrogen gas outlet pipe, and the nitrogen gas outlet pipe is provided with PLC control. pneumatic valve.
本发明还提供了一种从化学法回收CO 2后的废气中制取氮气的方法，采用如上所述的系统制取氮气。 The present invention also provides a method for producing nitrogen from the waste gas after recovering CO2 by chemical method, and adopts the above-mentioned system to produce nitrogen.
本发明的方法的优选实施例中，化学法回收CO 2后的废气中含有氮气、氧气、二氧化碳、水和有机胺，氮气的含量为90％以上(体积百分数)，氧气的含量为8～12％(体积百分数)，二氧化碳的含量为0.5～2％(体积百分数)，水的含量为5～9％(体积百分数)。 In the preferred embodiment of the method of the present invention, chemical method recovers CO Contain nitrogen, oxygen, carbon dioxide, water and organic amine in the waste gas after CO , the content of nitrogen is more than 90% (volume percent), and the content of oxygen is 8～12 % (volume percentage), the content of carbon dioxide is 0.5-2% (volume percentage), and the content of water is 5-9% (volume percentage).
本发明的方法的优选实施例中，深度净化气体的压力为0.7～1.0MPa，含尘量≤0.01μm，压力露点-20～-30℃。In a preferred embodiment of the method of the present invention, the pressure of the deeply purified gas is 0.7-1.0 MPa, the dust content is ≤0.01 μm, and the pressure dew point is -20--30°C.
本发明优选实施例中，从化学法回收CO 2后的废气中制取氮气的方法具体可为： In a preferred embodiment of the present invention, the method for producing nitrogen from the waste gas after chemical recovery of CO can be:
采用本发明的方法从燃煤锅炉烟气的化学法回收二氧化碳后的废气(放空气)中制取氮气；本实施例中的放空气约47℃，10KPa，氮气92％(体积百分数)，氧气10％(体积百分数)，二氧化碳1％(体积百分数)，水7％(体积百分数)以及微量的有机胺。Adopt the method of the present invention to produce nitrogen from the waste gas (release air) after the chemical method of coal-fired boiler flue gas reclaims carbon dioxide; The air discharge in the present embodiment is about 47 ℃, 10KPa, nitrogen 92% (volume percentage), oxygen 10% (volume percent), carbon dioxide 1% (volume percent), water 7% (volume percent) and a trace of organic amine.
取放空气量50000Nm 3/h，依次进入除雾器110、冷却器120(放空气温度降至30-35℃)、气液分离器130、过滤器140处理，以脱除放空气中的游离水，得到初步洁净气体。 Take and discharge the air with a volume of 50000Nm 3 /h, and then enter the demister 110, cooler 120 (the temperature of the discharged air is reduced to 30-35°C), the gas-liquid separator 130, and the filter 140 to remove the free air in the discharged air. water to get preliminary clean gas.
初步洁净气体，进入压缩机210压缩至0.8MPa，经分水罐220进一步除水后，进入干燥机230，进行深度脱水干燥；之后进入第二过滤器240除尘，保证放空气中的含尘量≤0.01μm，压力露点-20℃，方可达到吸附级别(即得到深度净化气体)。The preliminary clean gas enters the compressor 210 and is compressed to 0.8MPa. After further water removal by the water separator tank 220, it enters the dryer 230 for deep dehydration and drying; after that, it enters the second filter 240 for dust removal to ensure the dust content in the air. ≤0.01μm, pressure dew point -20 ℃, can reach the adsorption level (i.e. get deeply purified gas).
深度净化气体进入氮气浓缩装置300(吸附塔组)，经变压吸附后，塔顶产出0.6MPa，20000Nm 3/h，纯度99.5％的成品氮气。 The deeply purified gas enters the nitrogen concentrator 300 (adsorption tower group), and after pressure swing adsorption, 0.6 MPa, 20000 Nm 3 /h, and 99.5% purity of finished nitrogen are produced at the top of the tower.
如果以50000Nm 3/h空气为原料气，在0.8MPa的吸附压力下，产出压力为0.6MPa，产气量为15500Nm 3/h，纯度为99.5％的氮气。即同样的能耗下，本发明的产气量提高了29％，其节能效果显而易见。 If 50000Nm 3 /h air is used as the raw material gas, under the adsorption pressure of 0.8MPa, the output pressure is 0.6MPa, the gas output is 15500Nm 3 /h, and the purity is 99.5% nitrogen. That is, under the same energy consumption, the gas production of the present invention is increased by 29%, and the energy-saving effect is obvious.
以上所述仅为本发明的优选实施例，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

  1. 一种从化学法回收CO 2的废气中制取氮气的系统，其特征在于，所述系统包括粗处理装置、深度净化装置和氮气浓缩装置； A kind of system that recovers CO from the exhaust gas of chemical method and produces nitrogen, it is characterized in that, described system comprises rough treatment device, depth purification device and nitrogen enrichment device;
    所述粗处理装置用于初步去除废气中的溶剂杂质以得到初步洁净气体；The rough treatment device is used to initially remove solvent impurities in the waste gas to obtain a preliminary clean gas;
    所述深度净化装置包括依次相连的压缩机、深度除水装置和第二过滤器，所述压缩机的进气口与所述粗处理装置的出气口相连，所述深度净化装置用于对初步洁净气体进行深度净化以得到深度净化气体；The deep purification device includes a compressor, a deep water removal device and a second filter connected in sequence, the air inlet of the compressor is connected with the gas outlet of the rough treatment device, and the deep purification device is used for preliminary The clean gas is deeply purified to obtain deeply purified gas;
    所述氮气浓缩装置包括吸附塔，所述吸附塔的进气口与所述第二过滤器的出气口相连，所述吸附塔用于对所述深度净化气体进行变压吸附以制取氮气。The nitrogen concentrator includes an adsorption tower, the inlet of the adsorption tower is connected to the gas outlet of the second filter, and the adsorption tower is used for performing pressure swing adsorption on the deeply purified gas to produce nitrogen.
  2. 如权利要求1所述的从化学法回收CO 2的废气中制取氮气的系统，其特征在于，所述深度除水装置包括分水罐和干燥机，所述分水罐的进气口与所述压缩机的出气口相连，所述分水罐的出气口与所述干燥机的进气口相连，所述干燥机的出气口与所述第二过滤器的进气口相连。 As claimed in claim 1, the system for producing nitrogen from the waste gas of chemical method recovery CO 2 is characterized in that, the depth water removal device comprises a water separation tank and a drier, and the air inlet of the water separation tank is connected to the air inlet of the water separation tank. The air outlet of the compressor is connected, the air outlet of the water separation tank is connected with the air inlet of the dryer, and the air outlet of the dryer is connected with the air inlet of the second filter.
  3. 如权利要求1所述的从化学法回收CO 2的废气中制取氮气的系统，其特征在于，所述粗处理装置包括除雾器、冷却器、气液分离器和第一过滤器，所述除雾器的出气口与所述冷却器的进气口相连，所述冷却器的出气口与所述气液分离器的进气口相连，所述气液分离器的出气口与所述第一过滤器的进气口相连，所述第一过滤器的出气口与所述压缩机的进气口相连。 as claimed in claim 1 from chemical recovery CO2The system for producing nitrogen from the waste gas is characterized in that, the rough treatment device comprises a mist eliminator, a cooler, a gas-liquid separator and a first filter, and the The air outlet of the demister is connected with the air inlet of the cooler, the air outlet of the cooler is connected with the air inlet of the gas-liquid separator, and the air outlet of the gas-liquid separator is connected with the air inlet of the gas-liquid separator. The air inlet of the first filter is connected, and the air outlet of the first filter is connected with the air inlet of the compressor.
  4. 如权利要求3所述的从化学法回收CO 2的废气中制取氮气的系统，其特征在于，所述冷却器将气体的温度降至30～35℃，所述第一过滤器用于去除硫化物、氮氧化物、水和粉尘中的任意一种或几种的组合。 The system for producing nitrogen from the waste gas of recovering CO2 by chemical method according to claim 3, characterized in that, the cooler reduces the temperature of the gas to 30-35°C, and the first filter is used to remove sulfur any one or a combination of pollutants, nitrogen oxides, water and dust.
  5. 如权利要求1-4任一项所述的从化学法回收CO 2的废气中制取氮气的系统，其特征在于，所述吸附塔至少设有两台以形成吸附塔组。 The system for producing nitrogen from the waste gas of recovering CO2 by chemical method according to any one of claims 1-4, characterized in that at least two adsorption towers are provided to form an adsorption tower group.
  6. 如权利要求5所述的从化学法回收CO 2的废气中制取氮气的系统，其特征在于，所述吸附塔组与所述第二过滤器的出气口相连的管道上设有PLC控制气动阀。 As claimed in claim 5, the system for producing nitrogen from the exhaust gas of CO2 by chemical method is characterized in that, the pipeline connected to the gas outlet of the second filter group is provided with PLC control pneumatic valve.
  7. 如权利要求1所述的从化学法回收CO 2的废气中制取氮气的系统， 其特征在于，所述吸附塔设有两台，两台所述吸附塔并联设置，所述吸附塔的塔顶出气口通过氮气出气管与成品氮气储罐相连，所述氮气出气管上设有PLC控制气动阀。 As claimed in claim 1, the system for producing nitrogen from the exhaust gas of CO recovered by chemical method is characterized in that, the adsorption tower is provided with two, and the two adsorption towers are arranged in parallel, and the tower of the adsorption tower The top gas outlet is connected to the finished nitrogen storage tank through a nitrogen gas outlet pipe, and the nitrogen gas outlet pipe is provided with a PLC-controlled pneumatic valve.
  8. 一种从化学法回收CO 2后的废气中制取氮气的方法，其特征在于，采用如权利要求1-7中任意一项所述的系统制取氮气。 A method for producing nitrogen from waste gas after chemical recovery of CO 2 is characterized in that the nitrogen is produced by the system as described in any one of claims 1-7.
  9. 如权利要求8所述的从化学法回收CO 2后的废气中制取氮气的方法，其特征在于，所述化学法回收CO 2后的废气中含有氮气、氧气、二氧化碳、水和有机胺，所述氮气的体积百分数为90％以上，所述氧气的体积百分数为8～12％，所述二氧化碳的体积百分数为0.5～2％，所述水的体积百分数为5～9％。 as claimed in claim 8 from chemical method reclaiming CO The method for producing nitrogen from the waste gas after CO is characterized in that, said chemical method reclaims CO Containing nitrogen, oxygen, carbon dioxide, water and organic amine in the waste gas after CO , The volume percentage of the nitrogen is more than 90%, the volume percentage of the oxygen is 8-12%, the volume percentage of the carbon dioxide is 0.5-2%, and the volume percentage of the water is 5-9%.
  10. 如权利要求8所述的从化学法回收CO 2后的废气中制取氮气的方法，其特征在于，所述深度净化气体的压力为0.7～1.0MPa，含尘量≤0.01μm，压力露点为-20～-30℃。 As claimed in claim 8, the method for producing nitrogen from the exhaust gas after chemical recovery of CO 2 is characterized in that the pressure of the deeply purified gas is 0.7 to 1.0 MPa, the dust content is less than or equal to 0.01 μm, and the pressure dew point is -20～-30℃.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101417200A (en) * 2007-10-22 2009-04-29 辽河石油勘探局 Carbon dioxide, nitrogen gas recovering method in boiler flue gas
CN105413429A (en) * 2015-12-04 2016-03-23 中国天辰工程有限公司 Method for separating and purifying lime kiln tail gas
CN105864798A (en) * 2016-04-10 2016-08-17 海诺尔环保产业股份有限公司 Process for separating and recycling carbon dioxide and nitrogen in waste incineration tail gas
CN107899376A (en) * 2017-11-27 2018-04-13 北京集封环能科技有限责任公司 The joint of carbon dioxide in flue gas and nitrogen traps retracting device and method
CN109289440A (en) * 2018-04-24 2019-02-01 陕西龙门煤化工有限责任公司 One kind separating-purifying N from flue gases of cock oven2And CO2Device and method
CN110498416A (en) * 2019-08-14 2019-11-26 东营市港城热力有限公司 A kind of system that coal-fired plant boiler flue gas synchronizes recycling carbon dioxide and nitrogen
CN113975950A (en) * 2021-11-04 2022-01-28 大连理工大学 System and method for synchronously recovering carbon dioxide and nitrogen in flue gas by chemical method and PSA (pressure swing adsorption) method
CN113998677A (en) * 2021-10-19 2022-02-01 碳和科技(北京)有限公司 Recovery of CO from chemical process2System and method for producing nitrogen from waste gas

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151602A (en) * 1986-12-16 1988-06-24 Kawasaki Steel Corp Purification of high-purity nitrogen gas
JP4359513B2 (en) * 2004-01-23 2009-11-04 住友金属鉱山株式会社 15N production method and sulfuric acid or calcium sulfate production method using the same
KR100937769B1 (en) * 2009-04-30 2010-01-20 (주)이에이앤지 Ultra-high purity nitrogen supplying apparatus
CN106500460B (en) * 2016-11-24 2018-10-19 中国矿业大学 Nitrogen removing and purifying plant and method in gas deliquescence process
CN207356849U (en) * 2017-10-17 2018-05-15 冠礼控制科技（上海）有限公司 A kind of NMP gas recovery systems
CN108261844B (en) * 2017-12-07 2020-03-31 江苏宇通干燥工程有限公司 Special drying device for nitrogen closed-circuit VC and working method thereof
CN109045925A (en) * 2018-08-17 2018-12-21 青岛大拇指环境工程有限公司 A kind of VOCs waste gas recovery processing unit and method
WO2020218653A1 (en) * 2019-04-26 2020-10-29 (주)에어레인 Method for producing nitrogen-enriched air by using exhaust flue gas
CN113310063A (en) * 2021-02-10 2021-08-27 上海凯盛节能工程技术有限公司 Device and method for capturing and purifying carbon dioxide in glass kiln flue gas
CN216336618U (en) * 2021-10-19 2022-04-19 碳和科技(北京)有限公司 Recovery of CO from chemical process2System for preparing nitrogen from waste gas

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101417200A (en) * 2007-10-22 2009-04-29 辽河石油勘探局 Carbon dioxide, nitrogen gas recovering method in boiler flue gas
CN105413429A (en) * 2015-12-04 2016-03-23 中国天辰工程有限公司 Method for separating and purifying lime kiln tail gas
CN105864798A (en) * 2016-04-10 2016-08-17 海诺尔环保产业股份有限公司 Process for separating and recycling carbon dioxide and nitrogen in waste incineration tail gas
CN107899376A (en) * 2017-11-27 2018-04-13 北京集封环能科技有限责任公司 The joint of carbon dioxide in flue gas and nitrogen traps retracting device and method
CN109289440A (en) * 2018-04-24 2019-02-01 陕西龙门煤化工有限责任公司 One kind separating-purifying N from flue gases of cock oven2And CO2Device and method
CN110498416A (en) * 2019-08-14 2019-11-26 东营市港城热力有限公司 A kind of system that coal-fired plant boiler flue gas synchronizes recycling carbon dioxide and nitrogen
CN113998677A (en) * 2021-10-19 2022-02-01 碳和科技(北京)有限公司 Recovery of CO from chemical process2System and method for producing nitrogen from waste gas
CN113975950A (en) * 2021-11-04 2022-01-28 大连理工大学 System and method for synchronously recovering carbon dioxide and nitrogen in flue gas by chemical method and PSA (pressure swing adsorption) method

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