CN107596857A - Purifier for supercritical carbon dioxide Brayton cycle power generation system - Google Patents
Purifier for supercritical carbon dioxide Brayton cycle power generation system Download PDFInfo
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- CN107596857A CN107596857A CN201710936397.9A CN201710936397A CN107596857A CN 107596857 A CN107596857 A CN 107596857A CN 201710936397 A CN201710936397 A CN 201710936397A CN 107596857 A CN107596857 A CN 107596857A
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- carbon dioxide
- supercritical carbon
- outlet
- filter screen
- generation system
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 34
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 34
- 238000010248 power generation Methods 0.000 title abstract description 11
- 239000000463 material Substances 0.000 claims description 16
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 18
- 238000001179 sorption measurement Methods 0.000 abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000003795 desorption Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
-
- 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
- Y02P20/133—Renewable energy sources, e.g. sunlight
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
本发明公开了一种用于超临界二氧化碳布雷顿循环发电系统的净化器，包括净化器本体，净化器本体包括罐体、入口滤网、出口滤网及吸附介质，其中，入口滤网、出口滤网和吸附介质通过支架固定于罐体内，吸附介质位于入口滤网和出口滤网之间，该净化器能够有效的去除超临界二氧化碳中的氧气和氮气等杂质气体。
The invention discloses a purifier used in a supercritical carbon dioxide Brayton cycle power generation system, which comprises a purifier body, and the purifier body includes a tank body, an inlet filter screen, an outlet filter screen and an adsorption medium, wherein the inlet filter screen, the outlet filter screen The filter screen and adsorption medium are fixed in the tank through brackets, and the adsorption medium is located between the inlet filter screen and the outlet filter screen. The purifier can effectively remove impurity gases such as oxygen and nitrogen in supercritical carbon dioxide.
Description
技术领域technical field
本发明属于超临界二氧化碳布雷顿循环发电技术领域，涉及一种用于超临界二氧化碳布雷顿循环发电系统的净化器。The invention belongs to the technical field of supercritical carbon dioxide Brayton cycle power generation, and relates to a purifier used in a supercritical carbon dioxide Brayton cycle power generation system.
背景技术Background technique
在超临界二氧化碳布雷顿循化发电系统中，系统启动之前管道和设备中充满了空气，在启动过程中虽然会用二氧化碳气体进行多次置换，但是，由于各个设备和管道中死区的存在，系统中仍有部分空气残留，在运行过程中，也会在部分区域引入空气，二氧化碳工质中空气的存在会影响二氧化碳的部分性质，进而影响超临界二氧化碳的发电效率。空气中的氧气会引起发电系统中锅炉、设备和管路的腐蚀，空气中的氮气也会影响超临界二氧化碳的性质。因此，需要在发电系统运行过程中对二氧化碳工质进行净化，除去系统中混有的空气。In the supercritical carbon dioxide Brayton cycle power generation system, the pipes and equipment are filled with air before the system is started. Although carbon dioxide gas will be used for multiple replacements during the start-up process, due to the existence of dead zones in various equipment and pipes, There is still some air remaining in the system, and air will also be introduced in some areas during operation. The existence of air in the carbon dioxide working medium will affect some properties of carbon dioxide, and then affect the power generation efficiency of supercritical carbon dioxide. Oxygen in the air can cause corrosion of boilers, equipment and pipelines in power generation systems, and nitrogen in the air can also affect the properties of supercritical carbon dioxide. Therefore, it is necessary to purify the carbon dioxide working fluid during the operation of the power generation system to remove the air mixed in the system.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的缺点，提供了一种能够有效的去除超临界二氧化碳中的氧气的用于超临界二氧化碳布雷顿循环发电系统的净化器。The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a purifier for a supercritical carbon dioxide Brayton cycle power generation system that can effectively remove oxygen in supercritical carbon dioxide.
为达到上述目的，本发明采用的技术方案是：包括并联在主管路上净化器本体，所述的净化器本体包括首尾两端分别通过入口阀门和出口阀门与主管路相连通的罐体，且在入口阀门和出口阀门之间的主管路上安装有主管路阀门所述的罐体入口及出口分别设置有入口滤网和出口滤网，且在入口滤网和出口滤网之间的罐体内安装有吸附材料。In order to achieve the above object, the technical solution adopted by the present invention is to include a purifier body connected in parallel on the main road, and the purifier body includes a tank body connected to the main road through inlet valves and outlet valves at both ends of the head and tail respectively, and in The main pipeline between the inlet valve and the outlet valve is installed on the main pipeline valve. The inlet and outlet of the tank are respectively provided with an inlet filter and an outlet filter, and a Adsorbent material.
所述罐体出口与外部环境之间设有排空阀门。An emptying valve is provided between the outlet of the tank body and the external environment.
所述吸附材料的材质为分子筛。The material of the adsorption material is molecular sieve.
所述的入口滤网、吸附材料和出口滤网通过支架固定于罐体内。The inlet filter screen, adsorption material and outlet filter screen are fixed in the tank through brackets.
由于变压吸附的产品纯度高，吸附压力不高，设备及工艺流程简单，本发明利用变压吸附装置，对二氧化碳工质进行提纯，除去二氧化碳中混有的空气。Due to the high purity of the pressure swing adsorption product, low adsorption pressure, and simple equipment and process flow, the present invention uses a pressure swing adsorption device to purify the carbon dioxide working medium and remove the air mixed in the carbon dioxide.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明所述的用于超临界二氧化碳布雷顿循环发电系统的净化器在具体操作时，超临界二氧化碳会从主管路流入到净化器本体中，超临界二氧化碳与罐体中的吸附材料接触，在高压下氮气和氧气等被吸附材料选择性吸附，脱除氮气和氧气等杂质气体后的超临界二氧化碳回到主管路，结构简单，操作方便。During the specific operation of the purifier used in the supercritical carbon dioxide Brayton cycle power generation system according to the present invention, supercritical carbon dioxide will flow into the purifier body from the main pipeline, and the supercritical carbon dioxide will contact the adsorption material in the tank body. Nitrogen and oxygen are selectively adsorbed by the adsorbed material under high pressure, and the supercritical carbon dioxide after removing impurity gases such as nitrogen and oxygen is returned to the main pipeline. The structure is simple and the operation is convenient.
进一步，可以在主管路上并联设置两台净化器，一台使用，一台备用或检修，或者两台同时使用，一台进行吸附操作，另一台进行脱吸附操作。Further, two purifiers can be installed in parallel on the main pipe, one for use, one for standby or maintenance, or two for simultaneous use, one for adsorption and the other for desorption.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
其中，1为主管路、2为入口阀门、3为罐体、4为入口滤网、5为吸附材料、6为出口滤网、7为排空阀门、8为出口阀门、9为主管路阀门。Among them, 1 is the main pipe, 2 is the inlet valve, 3 is the tank body, 4 is the inlet filter, 5 is the adsorption material, 6 is the outlet filter, 7 is the emptying valve, 8 is the outlet valve, and 9 is the main pipe valve .
具体实施方式detailed description
下面结合附图对本发明做进一步详细描述：The present invention is described in further detail below in conjunction with accompanying drawing:
参考图1，本发明包括并联在主管路1上净化器本体，所述的净化器本体包括首尾两端分别通过入口阀门2和出口阀门8与主管路1相连通的罐体3，且在入口阀门2和出口阀门8之间的主管路上安装有主管路阀门9，罐体3出口与外部环境之间还设有排空阀门7，所述的罐体(3)入口及出口分别通过支架固定有入口滤网4和出口滤网6，且在入口滤网4和出口滤网6之间的罐体3内通过支架固定有分子筛吸附材料5。Referring to Fig. 1, the present invention includes a purifier body connected in parallel on the main pipeline 1, and the purifier body includes a tank body 3 communicated with the main pipeline 1 through an inlet valve 2 and an outlet valve 8 at both ends of the head and tail respectively, and at the inlet A main pipe valve 9 is installed on the main road between the valve 2 and the outlet valve 8, and an emptying valve 7 is also provided between the outlet of the tank body 3 and the external environment, and the inlet and outlet of the tank body (3) are respectively fixed by brackets There is an inlet filter screen 4 and an outlet filter screen 6, and a molecular sieve adsorption material 5 is fixed in the tank body 3 between the inlet filter screen 4 and the outlet filter screen 6 through a bracket.
本发明的具体工作过程为：Concrete work process of the present invention is:
打开净化器本体入口与主管路1之间的入口阀门2和净化器本体出口与主管路1之间的出口阀门8，关闭净化器本体出口与外部环境之间的排空阀门7。通过关小主管路阀门9，一部分超临界二氧化碳会从主管路1流入到净化器本体中，超临界二氧化碳穿过入口滤网4，过滤掉超临界二氧化碳中夹带的液滴等杂质，之后超临界二氧化碳与吸附材料5接触，在高压下氮气和氧气等被吸附材料5选择性吸附，超临界二氧化碳穿过出口滤网6，回到主管路1。Open the inlet valve 2 between the inlet of the purifier body and the main pipeline 1 and the outlet valve 8 between the outlet of the purifier body and the main pipeline 1, and close the emptying valve 7 between the outlet of the purifier body and the external environment. By closing the valve 9 of the main pipeline, a part of supercritical carbon dioxide will flow from the main pipeline 1 into the purifier body, and the supercritical carbon dioxide will pass through the inlet filter 4 to filter out impurities such as liquid droplets entrained in the supercritical carbon dioxide, and then the supercritical carbon dioxide will The carbon dioxide is in contact with the adsorption material 5, nitrogen and oxygen are selectively adsorbed by the adsorption material 5 under high pressure, and the supercritical carbon dioxide passes through the outlet filter screen 6 and returns to the main pipeline 1.
当净化器本体中的吸附材料5吸附氮气和氧气饱和之后，开大主管路阀门9，关闭净化器本体入口与主管路1之间的入口阀门2和净化器本体出口与主管路1之间的出口阀门8，缓慢打开净化器本体出口与外部环境之间的排空阀门7，净化器本体中残留的超临界二氧化碳排放至外部环境，净化器本体中压力降低，吸附材料5中吸附的氮气和氧气脱附，随超临界二氧化碳排放到外部环境，降低了超临界二氧化碳布雷顿循环发电系统中的氮气和氧气含量，提高了超临界二氧化碳的纯度。After the adsorption material 5 in the purifier body is saturated with nitrogen and oxygen, open the main pipeline valve 9, close the inlet valve 2 between the inlet of the purifier body and the main pipeline 1 and the valve between the outlet of the purifier body and the main pipeline 1. The outlet valve 8 slowly opens the exhaust valve 7 between the outlet of the purifier body and the external environment, the residual supercritical carbon dioxide in the purifier body is discharged to the external environment, the pressure in the purifier body decreases, and the nitrogen and nitrogen adsorbed in the adsorption material 5 and Oxygen desorption is discharged to the external environment along with supercritical carbon dioxide, which reduces the nitrogen and oxygen content in the supercritical carbon dioxide Brayton cycle power generation system and improves the purity of supercritical carbon dioxide.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710936397.9A CN107596857A (en) | 2017-10-10 | 2017-10-10 | Purifier for supercritical carbon dioxide Brayton cycle power generation system |
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| CN201710936397.9A CN107596857A (en) | 2017-10-10 | 2017-10-10 | Purifier for supercritical carbon dioxide Brayton cycle power generation system |
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| CN201710936397.9A Pending CN107596857A (en) | 2017-10-10 | 2017-10-10 | Purifier for supercritical carbon dioxide Brayton cycle power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110080843A (en) * | 2019-05-28 | 2019-08-02 | 西安热工研究院有限公司 | A kind of supercritical carbon dioxide Brayton cycle working medium purification system and method |
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Application publication date: 20180119 |
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