WO2023019868A1 - Carbon capturing and peak shaving coupling apparatus and method - Google Patents
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 77
- 238000010168 coupling process Methods 0.000 title claims abstract description 39
- 230000008878 coupling Effects 0.000 title claims abstract description 32
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 171
- 238000007906 compression Methods 0.000 claims abstract description 96
- 230000006835 compression Effects 0.000 claims abstract description 89
- 230000008929 regeneration Effects 0.000 claims abstract description 79
- 238000011069 regeneration method Methods 0.000 claims abstract description 79
- 238000010521 absorption reaction Methods 0.000 claims abstract description 65
- 238000004146 energy storage Methods 0.000 claims abstract description 53
- 238000010248 power generation Methods 0.000 claims abstract description 52
- 230000005611 electricity Effects 0.000 claims description 26
- 230000002745 absorbent Effects 0.000 claims description 12
- 239000002250 absorbent Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
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- 238000001816 cooling Methods 0.000 claims description 3
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- 239000006096 absorbing agent Substances 0.000 claims description 2
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- 238000013468 resource allocation Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 234
- 229910002092 carbon dioxide Inorganic materials 0.000 description 118
- 239000007789 gas Substances 0.000 description 44
- 230000008859 change Effects 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000005431 greenhouse gas Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000005262 decarbonization Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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Abstract
Provided in the present application are a carbon capturing and peak shaving coupling apparatus and method. The carbon capturing and peak shaving coupling apparatus comprises a renewable energy power generation system, an air carbon capturing system and a CO2 compression and energy storage system. The air carbon capturing system comprises an air compression apparatus, a CO2 absorption apparatus, a CO2 regeneration apparatus and a CO2 gas storage apparatus, which are sequentially connected. The CO2 compression and energy storage system comprises a second CO2 compression apparatus, an electric motor set, a second heat exchange apparatus, a CO2 liquid storage apparatus, an expander and a generator set, which are sequentially connected. When the renewable energy power generation system has abandonment outputs, the air carbon capturing system is driven to work to directly capture CO2 from the air by using a chemical absorption method, and the captured CO2 is subjected to phase-change energy storage in the CO2 compression and energy storage system, such that the aim of peak shaving of renewable energy power generation can be achieved, thereby achieving double benefits of surplus electric power resource allocation and utilization and CO2 emission reduction.
Description
相关申请的交叉引用Cross References to Related Applications
本申请要求了2021年8月16日向中国专利局提交的申请号为202110936431.9的专利的优先权，其全部内容以引用的方式并入本文中。This application claims the priority of a patent with application number 202110936431.9 filed with the China Patent Office on August 16, 2021, the entire contents of which are incorporated herein by reference.
本申请涉及温室气体减排及储能技术调峰技术领域，具体涉及一种捕碳调峰耦合装置及方法。This application relates to the technical field of greenhouse gas emission reduction and energy storage technology peak shaving, in particular to a carbon capture peak shaving coupling device and method.
随着经济的快速发展和居民生活水平的不断提高，能源需求迅猛增加，面对全球性能源短缺以及环境恶化危机，大力发展可再生能源、走可持续发展之路已经成为了全球共识。但是，对于风电或光伏发电这些间歇性可再生能源，其出力具有较强的不确定性和波动性，存在调峰难、并网困难的问题。以风电为例，在用电负荷低谷时段风能发电量较大，“弃风”现象突出，造成风资源浪费；而在用电负荷高峰时段，存在电力供给不足的现象。With the rapid development of the economy and the continuous improvement of residents' living standards, the demand for energy has increased rapidly. Facing the crisis of global energy shortage and environmental degradation, it has become a global consensus to vigorously develop renewable energy and take the road of sustainable development. However, for intermittent renewable energy such as wind power or photovoltaic power generation, its output has strong uncertainty and volatility, and there are problems such as difficult peak regulation and grid connection. Taking wind power as an example, during the low-peak period of electricity load, the wind power generation capacity is relatively large, and the phenomenon of "abandoning wind" is prominent, resulting in waste of wind resources; while during the peak period of electricity load, there is a phenomenon of insufficient power supply.
全球气候变化是人类可持续发展的最大威胁，应对气候变化以控制CO
2排放为主要目标。工业以及电力行业等是CO
2的集中稳定排放源，约占CO
2排放总量的50％。针对这些固定点源的CO
2减排，主要是利用CO
2捕集与封存(CCUS)技术，此技术是一种具有大规模CO
2减排潜力的技术。但是，除了工业以及电力行业等固定点源的CO
2排放，还有接近50％分布源排放的CO
2，空气直接捕碳技术可对这些分布源的CO
2进行捕集和利用。与CCUS技术从燃煤电厂捕碳不同，从空气中直接捕碳受地点限制较小，可以在各地广泛开展，而且，从空气中直接捕碳能降低空气中CO
2的浓度，可以解决“存量”的问题。但是，上述可再生能源在使用过程中存在调峰难、并网困难及温室气体减排紧迫等问题。
Global climate change is the biggest threat to the sustainable development of human beings, and the main goal of tackling climate change is to control CO2 emissions. Industry and power industry are concentrated and stable sources of CO 2 emissions, accounting for about 50% of the total CO 2 emissions. The reduction of CO 2 emissions from these stationary point sources mainly utilizes CO 2 capture and storage (CCUS) technology, which is a technology with large-scale CO 2 emission reduction potential. However, in addition to CO 2 emissions from fixed point sources such as industry and the power industry, there are nearly 50% of CO 2 emitted from distributed sources, and direct air carbon capture technology can capture and utilize CO 2 from these distributed sources. Different from carbon capture from coal-fired power plants with CCUS technology, direct carbon capture from the air is less restricted by location and can be widely carried out in various places. Moreover, direct carbon capture from the air can reduce the concentration of CO 2 in the air and can solve the problem of "storage". "The problem. However, in the process of using the above-mentioned renewable energy, there are problems such as difficulty in peak regulation, difficulty in grid connection, and urgent reduction of greenhouse gas emissions.
发明内容Contents of the invention
因此，本申请所要解决的技术问题在于现有技术中的可再生能源在使用过程中存在调峰难、并网困难及温室气体减排紧迫等问题。Therefore, the technical problem to be solved by this application lies in the difficulties in peak regulation, difficulty in grid connection and urgent reduction of greenhouse gas emissions in the use of renewable energy in the prior art.
为此，本申请提供一种捕碳调峰耦合装置，包括：可再生能源发电系统、空气捕碳系统和CO
2压缩储能系统；
For this reason, the application provides a carbon capture peak regulation coupling device, including: a renewable energy power generation system, an air carbon capture system and a CO2 compression energy storage system;
空气捕碳系统适于从空气中捕集CO
2，其包括：空气压缩装置、CO
2吸收装置、CO
2再生装置以及CO
2气体储存装置；所述空气压缩装置的第一端与外界空气连通，适于由外界吸收空气，所述空气压缩装置的第二端与所述CO
2吸收装置的第一端连通，所述CO
2吸收装置的第二端与所述CO
2再生装置的第一端连通，所述CO
2再生装置的第二端与所述CO
2气体储存装置的第一端连通，所述CO
2吸收装置的第四端与外界连通，适于向外界排出脱碳处理后的空气；
The air carbon capture system is suitable for capturing CO 2 from the air, which includes: an air compression device, a CO 2 absorption device, a CO 2 regeneration device, and a CO 2 gas storage device; the first end of the air compression device communicates with the outside air , suitable for absorbing air from the outside, the second end of the air compression device communicates with the first end of the CO2 absorption device, the second end of the CO2 absorption device communicates with the first end of the CO2 regeneration device The second end of the CO 2 regeneration device communicates with the first end of the CO 2 gas storage device, and the fourth end of the CO 2 absorption device communicates with the outside world, which is suitable for discharging to the outside world after decarbonization treatment. air;
CO
2压缩储能系统包括：第二CO
2压缩装置、电动机组、第二换热装置、CO
2液体储存装置、膨胀机和发电机组；其中，电动机组对所述第二CO
2压缩装置供电，膨胀机适于带动所述发电机组发电，所述第二CO
2压缩装置的第一端与所述CO
2气体储存装置的第二端连通，所述第二CO
2压缩装置的第二端与所述第二换热装置的第一端连通，所述第二换热装置的第二端连通与所述CO
2液体储存装置的第一端连通，且所述CO
2液体储存装置的第二端与所述第二换热装置的第三端连通，所述第二换热装置的第四端与所述膨胀机的第一端连通；所述膨胀机的第二端与所述CO
2气体储存装置的第一端连通；
The CO2 compression energy storage system includes: a second CO2 compression device, a motor unit, a second heat exchange device, a CO2 liquid storage device, an expander, and a generator set; wherein, the motor unit supplies power to the second CO2 compression device , the expander is suitable for driving the generating set to generate electricity, the first end of the second CO2 compression device communicates with the second end of the CO2 gas storage device, and the second end of the second CO2 compression device It communicates with the first end of the second heat exchange device, the second end of the second heat exchange device communicates with the first end of the CO2 liquid storage device, and the first end of the CO2 liquid storage device The two ends communicate with the third end of the second heat exchange device, the fourth end of the second heat exchange device communicates with the first end of the expander; the second end of the expander communicates with the CO 2. The first end of the gas storage device is connected;
所述CO
2压缩储能系统具有通过第二CO
2压缩装置将所述CO
2气体储存装置输出的CO
2气体进行压缩和降温液化为液态CO
2的释放热能状态，在所述释放热能状态下热能由所述第二换热装置储存，且通过所述第二换热装置将冷却后的液态CO
2存储于CO
2液体储存装置内；
The CO 2 compression energy storage system has a release heat energy state in which the CO 2 gas output by the CO 2 gas storage device is compressed, cooled and liquefied into liquid CO 2 through the second CO 2 compression device, and in the release heat energy state thermal energy is stored by the second heat exchange device, and the cooled liquid CO2 is stored in the CO2 liquid storage device through the second heat exchange device;
所述CO
2压缩储能系统还具有所述CO
2液体储存装置内的液态CO
2通过吸收所述第二换热装置内储存的热能且减压气化后，进入膨胀机做功，以通过所述膨胀机带动发电机组发电的发电状态；
The CO 2 compression energy storage system also has the liquid CO 2 in the CO 2 liquid storage device absorbing the heat energy stored in the second heat exchange device and decompressing and gasifying, and then enters the expander to do work, so as to pass through the Describe the state of power generation in which the expander drives the generating set to generate electricity;
所述CO
2压缩储能系统在所述放热能状态和所述发电状态之间切换设置。
The CO 2 compression energy storage system is set to switch between the heat release energy state and the power generation state.
可选地，上述的捕碳调峰耦合装置，所述空气捕碳系统还包括，Optionally, the above-mentioned carbon capture peak shaving coupling device, the air carbon capture system also includes,
第一换热装置，设置在所述CO
2吸收装置的第二端与所述CO
2再生装置的第一端之间，所述第一换热装置的第一端与所述CO
2吸收装置的第二端连通，所述第一换热装置的第二端与CO
2再生装置的第一端连通。
A first heat exchange device disposed between the second end of the CO2 absorption device and the first end of the CO2 regeneration device, the first end of the first heat exchange device and the CO2 absorption device The second end of the first heat exchange device communicates with the first end of the CO 2 regeneration device.
可选地，上述的捕碳调峰耦合装置，所述第一换热装置的第一端与所述CO
2吸收装置的第二端之间还设置有冷富液泵；
Optionally, in the above-mentioned carbon capture peak regulation coupling device, a cold rich liquid pump is further arranged between the first end of the first heat exchange device and the second end of the CO2 absorption device;
所述CO
2吸收装置的第二端与所述冷富液泵的第一端连通；冷富液泵的第二端与所述第一换热装置的第一端连通。
The second end of the CO 2 absorption device communicates with the first end of the cold rich liquid pump; the second end of the cold rich liquid pump communicates with the first end of the first heat exchange device.
可选地，上述的捕碳调峰耦合装置，所述第一换热装置的第二端与所述CO
2再生装置的第一端之间还设置有富液储存装置和热富液泵；所述第一换热装置的第二端与富液储存装置的第一端连接，所述富液储存装置的第二端与CO
2再生装置的第一端连接。
Optionally, in the above-mentioned carbon capture peak regulation coupling device, a rich liquid storage device and a hot rich liquid pump are further arranged between the second end of the first heat exchange device and the first end of the CO2 regeneration device; The second end of the first heat exchange device is connected to the first end of the rich liquid storage device, and the second end of the rich liquid storage device is connected to the first end of the CO 2 regeneration device.
可选地，上述的捕碳调峰耦合装置，所述第一换热装置和所述CO
2再生装置之间还设有热贫液泵；所述热贫液泵的第一端与所述CO
2再生装置的第三端连通，所述热贫液泵的第二端与所述第一换热装置的第三端连通，所述热贫液泵适于驱动贫液由CO
2再生装置的第三端向第一换热装置的第三端流通；
Optionally, in the above-mentioned carbon capture peak regulation coupling device, a hot lean liquid pump is also provided between the first heat exchange device and the CO regeneration device; the first end of the hot lean liquid pump is connected to the The third end of the CO2 regeneration device is connected, the second end of the hot lean liquid pump is connected with the third end of the first heat exchange device, and the hot lean liquid pump is adapted to drive the lean liquid from the CO2 regeneration device The third end of the first heat exchange device communicates with the third end;
所述CO
2再生装置的第三端和所述CO
2再生装置的第四端之间还设有加热装置。
A heating device is also provided between the third end of the CO 2 regeneration device and the fourth end of the CO 2 regeneration device.
可选地，上述的捕碳调峰耦合装置，所述第一换热装置与CO
2吸收装置之间还设有贫液储存装置和冷贫液泵；
Optionally, in the above-mentioned carbon capture peak regulation coupling device, a lean liquid storage device and a cold lean liquid pump are also arranged between the first heat exchange device and the CO2 absorption device;
所述第一换热装置的第四端与所述贫液储存装置的第一端连通，所述贫液储存装置的第二端与冷贫液泵的第一端连接，所述冷贫液泵的第二端与CO
2吸收装置的第三端连通。
The fourth end of the first heat exchange device communicates with the first end of the lean liquid storage device, the second end of the lean liquid storage device is connected with the first end of the cold lean liquid pump, and the cold lean liquid The second end of the pump communicates with the third end of the CO2 absorption device.
可选地，上述的捕碳调峰耦合装置，Optionally, the above-mentioned carbon capture peak regulation coupling device,
所述CO
2吸收装置为CO
2吸收塔，吸收塔内设置有CO
2吸收剂；
The CO2 absorption device is a CO2 absorption tower, and a CO2 absorbent is arranged in the absorption tower;
所述CO
2再生装置为CO
2再生塔。
The CO 2 regeneration device is a CO 2 regeneration tower.
可选地，上述的捕碳调峰耦合装置，所述CO
2再生装置和CO
2气体储存装置之间设置有第一CO
2压缩装置，所述CO
2再生装置的第二端与第一CO
2压缩装置的第一端连通，所述第一CO
2压缩装置的第二端与所述CO
2气体储存装置的第一端连通。
Optionally, in the above-mentioned carbon capture peak regulation coupling device, a first CO 2 compression device is arranged between the CO 2 regeneration device and the CO 2 gas storage device, and the second end of the CO 2 regeneration device is connected to the first CO 2 2 The first end of the compression device communicates with the first end of the first CO2 compression device, and the second end of the first CO2 compression device communicates with the first end of the CO2 gas storage device.
一种捕碳调峰耦合方法，包括：A carbon capture and peak shaving coupling method, comprising:
S1：空气压缩装置从外界吸取空气，经由CO
2吸收装置向CO
2再生装置传输，通过CO
2气体储存装置存储；
S1: The air compression device draws air from the outside, transmits it to the CO2 regeneration device through the CO2 absorption device, and stores it through the CO2 gas storage device;
S2：所述CO
2气体储存装置中的CO
2压缩并降温液化成液态CO
2，第二换热装置储存所述压缩过程以及液化过程释放的热能，冷却后的液态CO
2存储于CO
2液体储存装置内；
S2: The CO 2 in the CO 2 gas storage device is compressed and cooled to liquefy into liquid CO 2 , the second heat exchange device stores the heat energy released during the compression process and the liquefaction process, and the cooled liquid CO 2 is stored in the CO 2 liquid in the storage device;
S3：所述CO
2液体储存装置内的液态CO
2通过吸收所述第二换热装置内储存的热能并减压气化，进入膨胀机做功，带动发电机组发电。
S3: The liquid CO 2 in the CO 2 liquid storage device absorbs the heat energy stored in the second heat exchange device, depressurizes and gasifies, enters the expander to do work, and drives the generator set to generate electricity.
可选地，上述的捕碳调峰耦合方法，采用上述的捕碳调峰耦合装置。Optionally, the above carbon capture peak shaving coupling method adopts the above carbon capture peak shaving coupling device.
本申请提供的技术方案，具有如下优点：The technical scheme provided by the application has the following advantages:
1.本申请提供的捕碳调峰耦合装置，利用风能、太阳能电厂等，可再生能源发电系统在有利发电条件下的过剩发电量，从空气中直接捕碳，并利用捕集的CO
2进行相变压缩储能，在不利发电条件下，利用CO
2膨胀做功释放能量进行发电，补充发电量的不足，
1. The carbon capture peak-shaving coupling device provided by this application uses wind energy, solar power plants, etc., and the excess power generation capacity of renewable energy power generation systems under favorable power generation conditions, directly captures carbon from the air, and uses the captured CO2 to carry out Phase change compression energy storage, under unfavorable power generation conditions, use CO2 expansion to do work and release energy for power generation, supplementing the shortage of power generation,
从而有效解决可再生能源发电厂在有利发电条件下发电量过剩，不利条件下发电量不足的矛盾，实现过剩电力资源调配利用和CO
2减排的双重效益；在实现可再生能源发电厂发电调峰的同时实现空气中CO
2浓度的降低，可提高发电效率并缓解温室效应，并且装置安装受地点约束较少，适用于有可再生能源发电的多种场所。
Thereby effectively solving the contradiction between excess power generation of renewable energy power plants under favorable power generation conditions and insufficient power generation under unfavorable conditions, realizing the dual benefits of deployment and utilization of excess power resources and CO2 emission reduction; At the same time, the CO2 concentration in the air can be reduced, which can improve the power generation efficiency and alleviate the greenhouse effect, and the installation of the device is less restricted by the location, and is suitable for various places with renewable energy power generation.
2.本申请提供的捕碳调峰耦合装置，灵活调节可再生能源发电系统的运行状态，使得机组的净发电量和发电成本在一定范围内得到调控，实现经济效益。2. The carbon capture and peak regulation coupling device provided by this application can flexibly adjust the operation status of the renewable energy power generation system, so that the net power generation and power generation cost of the unit can be regulated within a certain range, and economic benefits can be realized.
3.本申请提供的捕碳调峰耦合装置，将从空气中捕集到的CO
2压缩后作为能量储存的介质，具有储能密度高、应用灵活、经济环保、转换效率高等优点，在波动性可再生能源储能调峰领域具备很好的应用前景。
3. The carbon capture and peak regulation coupling device provided by this application compresses the CO 2 captured from the air as an energy storage medium. It has the advantages of high energy storage density, flexible application, economical and environmental protection, and high conversion efficiency. The field of peak shaving of renewable energy storage has a good application prospect.
4.本申请提供的捕碳调峰耦合装置，富液储存装置、贫液储存装置、CO
2气体储存装置、CO
2液体储存装置的存在，将捕碳的吸收环节、捕碳的解析环节、CO
2的压缩储能环节独立控制，有利于提高集成系统接受波动性新能源的能力。
4. The existence of the carbon capture peak regulation coupling device provided by this application, the rich liquid storage device, the lean liquid storage device, the CO 2 gas storage device, and the CO 2 liquid storage device will combine the absorption link of carbon capture, the analysis link of carbon capture, The independent control of the compression energy storage link of CO 2 is conducive to improving the ability of the integrated system to accept fluctuating new energy.
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见 地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or prior art. Obviously, the accompanying drawings in the following description The drawings are some implementations of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
图1为实施例1中所提供的捕碳调峰耦合装置的结构示意图；Fig. 1 is the structural representation of the carbon capture peak regulation coupling device provided in embodiment 1;
附图标记说明：Explanation of reference signs:
1-可再生能源发电系统；2-空气捕碳系统；3-CO
2压缩储能系统；4-空气压缩装置；5-CO
2吸收装置；6-冷富液泵；7-第一换热装置；8-富液储存装置；9-热富液泵；10-CO
2再生装置；11-加热装置；12-热贫液泵；13-贫液储存装置；14-冷贫液泵；15-第一CO
2压缩装置；16-CO
2气体储存装置；17-第二CO
2压缩装置；18-电动机组；19-第二换热装置；20-CO
2液体储存装置；21-膨胀机；22-发电机组。
1-renewable energy power generation system; 2-air carbon capture system; 3-CO 2 compression energy storage system; 4-air compression device; 5-CO 2 absorption device; 6-cold rich liquid pump; 7-first heat exchange device; 8-rich liquid storage device; 9-hot rich liquid pump; 10-CO 2 regeneration device; 11-heating device; 12-hot lean liquid pump; 13-lean liquid storage device; 14-cold lean liquid pump; 15 - first CO2 compression device; 16 - CO2 gas storage device; 17 - second CO2 compression device; 18 - electric motor unit; 19 - second heat exchange device; 20 - CO2 liquid storage device; 21 - expander ; 22 - generating set.
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific orientation construction and operation, therefore should not be construed as limiting the application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
此外，下面所描述的本申请不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。In addition, the technical features involved in the different embodiments of the present application described below may be combined as long as they do not constitute a conflict with each other.
实施例1Example 1
如图1所示，本申请提供了一种捕碳调峰耦合装置，包括可再生能源发电系统1、空气捕碳系统2和CO
2压缩储能系统3。其中，空气捕碳系统2包括依次连接的空气压缩装置4、CO
2吸收装置5、CO
2再生装置10和CO
2气体储存装置16；CO
2压缩储能系统3包括依次连接的第二CO
2压缩装置17、第二换热装置19、CO
2液体储存装置20和膨胀机21，所述第二CO
2压缩装置17由电动机组18提供动力，所述膨胀机21驱动发电机组22发电。
As shown in FIG. 1 , this application provides a carbon capture peak shaving coupling device, including a renewable energy power generation system 1 , an air carbon capture system 2 and a CO 2 compression energy storage system 3 . Among them, the air carbon capture system 2 includes an air compression device 4, a CO 2 absorption device 5, a CO 2 regeneration device 10, and a CO 2 gas storage device 16 connected in sequence; the CO 2 compression energy storage system 3 includes a second CO 2 gas storage device connected in sequence The compression device 17, the second heat exchange device 19, the CO 2 liquid storage device 20 and the expander 21, the second CO 2 compression device 17 is powered by the motor unit 18, and the expander 21 drives the generator unit 22 to generate electricity.
其中，本实施例中，所述空气压缩装置4的第一端与外界空气连通，适于由外界吸收空气，所述空气压缩装置4的第二端与所述CO
2吸收装置5的第一端连通，所述CO
2吸收装置5的第二端与所述CO
2再生装置10的第一端连通，所述CO
2再生装置10的第二端与所述CO
2气体储存装置16的第一端连通，所述CO
2吸收装置5的第四端与外界连通，适于向外界排出脱碳处理后的空气；所述第二CO
2压缩装置17的第一端与所述CO
2气体储存装置16的第二端连通，所述第二CO
2压缩装置17的第二端与所述第二换热装置19的第一端连通，所述第二换热装置19的第二端连通与所述CO
2液体储存装置20的第一端连通，且所述CO
2液体储存装置20的第二端与所述第二换热装置19的第三端连通，所述第二换热装置19的第四端与所述膨胀机21的第一端连通；所述膨胀机21的第二端与所述CO
2气体储存装置16的第一端连通；
Wherein, in this embodiment, the first end of the air compression device 4 communicates with the outside air, and is suitable for absorbing air from the outside, and the second end of the air compression device 4 is connected to the first end of the CO2 absorption device 5. The second end of the CO 2 absorption device 5 communicates with the first end of the CO 2 regeneration device 10, and the second end of the CO 2 regeneration device 10 communicates with the first end of the CO 2 gas storage device 16. One end communicates, and the fourth end of the CO2 absorption device 5 communicates with the outside world, and is suitable for discharging decarbonized air to the outside world; the first end of the second CO2 compression device 17 is connected to the CO2 gas The second end of the storage device 16 communicates, the second end of the second CO2 compression device 17 communicates with the first end of the second heat exchange device 19, and the second end of the second heat exchange device 19 communicates with It communicates with the first end of the CO2 liquid storage device 20, and the second end of the CO2 liquid storage device 20 communicates with the third end of the second heat exchange device 19, and the second heat exchange device The fourth end of 19 communicates with the first end of the expander 21; the second end of the expander 21 communicates with the first end of the CO gas storage device 16;
所述CO
2压缩储能系统3具有通过第二CO
2压缩装置17将所述CO
2气体储存装置16输出的CO
2气体进行压缩和降温液化为液态CO
2的释放热能状态，在所述释放热能状态下热能由所述第二换热装置19储存，且通过所述第二换热装置19将冷却后的液态CO
2存储于CO
2液体储存装置20内；所述CO
2压缩储能系统3还具有所述CO
2液体储存装置20内的液态CO
2通过吸收所述第二换热装置19内储存的热能且减压气化后，进入膨胀机21做功，以通过所述膨胀机21带动发电机组22发电的发电状态；所述CO
2压缩储能系统3在所述放热能状态和所述发电状态之间切换设置。
The CO 2 compression energy storage system 3 has a release thermal energy state in which the CO 2 gas output by the CO 2 gas storage device 16 is compressed and cooled to liquefy into liquid CO 2 through the second CO 2 compression device 17 . Thermal energy is stored by the second heat exchange device 19 in the state of thermal energy, and the cooled liquid CO2 is stored in the CO2 liquid storage device 20 through the second heat exchange device 19; the CO2 compression energy storage system 3. The liquid CO2 in the CO2 liquid storage device 20 absorbs the heat energy stored in the second heat exchange device 19 and decompresses and gasifies, then enters the expander 21 to do work, so as to pass through the expander 21 The power generation state that drives the generator set 22 to generate power; the CO 2 compression energy storage system 3 is set to switch between the heat release state and the power generation state.
本实施例中提供的第二换热装置19，其具有CO
2气体进口、CO
2液体出口、CO
2液体进口和CO
2气体出口，对应于第二换热装置19的第一端、第二端、第三端和第四端。
The second heat exchange device 19 provided in this embodiment has a CO2 gas inlet, a CO2 liquid outlet, a CO2 liquid inlet and a CO2 gas outlet, corresponding to the first end of the second heat exchange device 19, the second end, third end, and fourth end.
所述第二CO
2压缩装置17的第二端为第二CO
2压缩装置17的出口，第二换热装置19的第一端为CO
2气体进口。所述第二换热装置19的第二端为CO
2液 体出口，CO
2液体储存装置20的第一端为CO
2液体入口；第二换热装置19的第四端为CO
2气体出口，所述膨胀机21的第一端为膨胀机21的入口；所述第二换热装置19的第三端为CO
2液体进口，所述CO
2液体储存装置20的第二端为CO
2液体出口。
The second end of the second CO 2 compression device 17 is the outlet of the second CO 2 compression device 17, and the first end of the second heat exchange device 19 is the CO 2 gas inlet. The second end of the second heat exchange device 19 is the CO2 liquid outlet, the first end of the CO2 liquid storage device 20 is the CO2 liquid inlet; the fourth end of the second heat exchange device 19 is the CO2 gas outlet, The first end of the expander 21 is the inlet of the expander 21; the third end of the second heat exchange device 19 is the CO liquid inlet, and the second end of the CO liquid storage device 20 is the CO liquid exit.
本实施例中，膨胀机21与发电机组22连接，所述膨胀机21驱动发电机组22发电；所述膨胀机21的第二端为CO
2出口，CO
2气体储存装置16的第一端为CO
2入口，所述膨胀机21的CO2出口与CO
2气体储存装置16的CO
2入口连接，以达到CO
2循环利用的目的。
In this embodiment, the expander 21 is connected to the generator set 22, and the expander 21 drives the generator set 22 to generate electricity; the second end of the expander 21 is the CO2 outlet, and the first end of the CO2 gas storage device 16 is CO 2 inlet, the CO 2 outlet of the expander 21 is connected with the CO 2 inlet of the CO 2 gas storage device 16, so as to achieve the purpose of CO 2 recycling.
在本实施例中，所述空气压缩装置4的第二端为出气口，所述CO
2吸收装置5的第一端为空气进口，所述空气压缩装置4为空气压缩机，CO
2吸收装置5为CO
2吸收塔，吸收塔内设置有CO
2吸收剂，在本实施例中，CO
2吸收剂可以为单乙醇胺或混合胺，通过CO
2与吸收剂之间的化学反应来捕集空气中的CO
2。
In this embodiment, the second end of the air compression device 4 is an air outlet, the first end of the CO2 absorption device 5 is an air inlet, the air compression device 4 is an air compressor, and the CO2 absorption device 5 is a CO2 absorption tower, and a CO2 absorbent is arranged in the absorption tower. In this embodiment, the CO2 absorbent can be monoethanolamine or mixed amine, and the air is captured through the chemical reaction between CO2 and the absorbent CO 2 in .
在本实施例中，CO
2再生装置10可为再生塔，CO
2富液在再生塔中在高温作用下进行解析进而释放CO
2，在本实施例中，控制再生塔内富液温度为
In this embodiment, the CO2 regeneration device 10 can be a regeneration tower, and the CO2 rich liquid is decomposed under the action of high temperature in the regeneration tower to release CO2 . In this embodiment, the temperature of the rich liquid in the regeneration tower is controlled to be
110-120℃之间即可。在一可选实施例中，所述CO
2再生装置10具有富液进口、CO
2出口、贫液进口和贫液出口，对应于CO
2再生装置10的第一端、第二端、第三端以及第四端，
Between 110-120 ℃ can be. In an optional embodiment, the CO2 regeneration device 10 has a rich liquid inlet, a CO2 outlet, a lean liquid inlet and a lean liquid outlet, corresponding to the first end, the second end, and the third end of the CO2 regeneration device 10. end and the fourth end,
在本实施例中，所述CO
2吸收塔和再生塔均为填料塔，采用惰性金属填料，填料的作用是保证气液两相充分接触。
In this embodiment, both the CO 2 absorption tower and the regeneration tower are packed towers, and inert metal fillers are used, and the function of the fillers is to ensure full contact between the gas-liquid two phases.
在本实施例中，CO
2气体储存装置16为CO
2气体储存罐，第二CO
2压缩装置17为CO
2压缩机，CO
2液体储存装置20为CO
2液体储存罐。
In this embodiment, the CO 2 gas storage device 16 is a CO 2 gas storage tank, the second CO 2 compression device 17 is a CO 2 compressor, and the CO 2 liquid storage device 20 is a CO 2 liquid storage tank.
在本实施例中，第二换热装置19为相变储能换热系统，系统内设有用于储存气态CO
2压缩过程，以及降温液化过程产生的热能和释放上述热能用于将液态CO
2气化的相变蓄热材料。
In this embodiment, the second heat exchange device 19 is a phase change energy storage heat exchange system, which is equipped with a system for storing gaseous CO 2 during the compression process, and heat energy generated during the cooling and liquefaction process and releasing the above heat energy for converting liquid CO 2 Vaporized phase change heat storage material.
本申请提供的捕碳调峰耦合装置，利用空气捕碳系统2基于化学吸收法直接从空气中捕碳，然后在CO
2压缩储能系统3中，利用CO
2相变储能达到可再生能源发电调峰的目的。当电力充裕时，将CO
2气体储存装置中的CO
2压缩并降温液化成液态CO
2，通过相变储能换热系统储存所述压缩过程以及液化过程释放的热能；当需要用电时，所述液态CO
2通过吸收所述相变储能换热系统储存的热 能、减压气化后，进入膨胀机做功，所述膨胀机带动发电机组发电，从而实现过剩电力资源调配利用和CO
2减排的双重效益。
The carbon capture peak shaving coupling device provided by this application uses the air carbon capture system 2 to directly capture carbon from the air based on the chemical absorption method, and then uses the CO 2 phase change energy storage in the CO 2 compression energy storage system 3 to achieve renewable energy The purpose of power generation peak regulation. When the power is sufficient, the CO 2 in the CO 2 gas storage device is compressed and cooled to liquefy into liquid CO 2 , and the heat energy released during the compression process and the liquefaction process is stored through the phase change energy storage and heat exchange system; when electricity is needed, The liquid CO 2 absorbs the heat energy stored in the phase change energy storage heat exchange system, decompresses and gasifies, then enters the expander to do work, and the expander drives the generating set to generate electricity, thereby realizing the allocation and utilization of excess power resources and CO 2 The double benefit of emissions reductions.
在本实施例中，所述可再生能源发电系统1产生的弃电为空气捕碳系统2和CO
2压缩储能系统3供电。在本实施例中，所述可再生能源发电系统1可为风力发电系统或光伏发电系统。当然在其他可选的实施方式中，可再生能源发电系统1可为装置内任何需要能量的部件进行供电，以提供所需的能量。在本实施例中，所述可再生能源发电系统1与再沸器连接，以为再生塔提供热量；所述可再生能源发电系统1与第一CO
2压缩装置15(下文提及)和第二CO
2压缩装置17连接，提供动力；所述膨胀机21带动发电机组22发电，产生的电输送到可再生能源发电系统1，补足用电需求。
In this embodiment, the waste electricity generated by the renewable energy power generation system 1 supplies power for the air carbon capture system 2 and the CO 2 compression energy storage system 3 . In this embodiment, the renewable energy power generation system 1 may be a wind power generation system or a photovoltaic power generation system. Of course, in other optional implementations, the renewable energy power generation system 1 can supply power to any components in the device that require energy, so as to provide the required energy. In this embodiment, the renewable energy power generation system 1 is connected with the reboiler to provide heat for the regeneration tower; the renewable energy power generation system 1 is connected with the first CO2 compression device 15 (mentioned below) and the second The CO 2 compression device 17 is connected to provide power; the expander 21 drives the generator set 22 to generate electricity, and the generated electricity is sent to the renewable energy power generation system 1 to supplement the electricity demand.
所述CO
2再生装置10和CO
2气体储存装置16之间设置有第一CO
2压缩装置15，所述CO
2再生装置10的第二端与第一CO
2压缩装置15的第一端连通，所述第一CO
2压缩装置15的第二端与所述CO
2气体储存装置16的第一端连通。在本实施例中，所述第一CO
2压缩装置15为CO
2压缩机。
A first CO2 compression device 15 is arranged between the CO2 regeneration device 10 and the CO2 gas storage device 16, and the second end of the CO2 regeneration device 10 communicates with the first end of the first CO2 compression device 15 , the second end of the first CO 2 compression device 15 communicates with the first end of the CO 2 gas storage device 16 . In this embodiment, the first CO 2 compression device 15 is a CO 2 compressor.
在本实施例中，所述空气捕碳系统2还包括第一换热装置7，设置在所述CO
2吸收装置5的第二端与所述CO
2再生装置10的第一端之间。其中，所述第一换热装置7的第一端与所述CO
2吸收装置5的第二端连通，所述第一换热装置7的第二端与CO
2再生装置10的第一端连通。所述第一换热装置7的第一端与所述CO
2吸收装置5的第二端之间还设置有冷富液泵6；所述CO
2吸收装置5的第二端与所述冷富液泵6的第一端连通；冷富液泵6的第二端与所述第一换热装置7的第一端连通。
In this embodiment, the air carbon capture system 2 further includes a first heat exchange device 7 disposed between the second end of the CO 2 absorption device 5 and the first end of the CO 2 regeneration device 10 . Wherein, the first end of the first heat exchange device 7 communicates with the second end of the CO2 absorption device 5, and the second end of the first heat exchange device 7 communicates with the first end of the CO2 regeneration device 10. connected. A cold rich liquid pump 6 is also arranged between the first end of the first heat exchange device 7 and the second end of the CO2 absorption device 5; The first end of the rich liquid pump 6 is connected; the second end of the cold rich liquid pump 6 is connected with the first end of the first heat exchange device 7 .
在本实施例中，所述第一换热装置7为换热器，吸收塔与富液储存罐之间连接有换热器，有利于提高能量的利用率，降低成本。第一换热装置7的第一端为富液进口，CO
2吸收装置5的第二端为富液出口，第一换热装置7的第二端为富液出口，CO
2再生装置10的第一端为富液进口。
In this embodiment, the first heat exchange device 7 is a heat exchanger, and a heat exchanger is connected between the absorption tower and the rich liquid storage tank, which is beneficial to improve energy utilization and reduce costs. The first end of the first heat exchange device 7 is the rich liquid inlet, the second end of the CO2 absorption device 5 is the rich liquid outlet, the second end of the first heat exchange device 7 is the rich liquid outlet, and the CO2 regeneration device 10 The first end is the rich liquid inlet.
所述第一换热装置7的第二端与所述CO
2再生装置10的第一端之间还设置有富液储存装置8和热富液泵9；所述第一换热装置7的第二端与富液储存装置8的第一端连接，所述富液储存装置8的第二端与CO
2再生装置10的第一端连接。在本实施例中，所述富液储存装置8为富液储存罐。
A rich liquid storage device 8 and a hot rich liquid pump 9 are also arranged between the second end of the first heat exchange device 7 and the first end of the CO2 regeneration device 10; The second end is connected to the first end of the rich liquid storage device 8 , and the second end of the rich liquid storage device 8 is connected to the first end of the CO 2 regeneration device 10 . In this embodiment, the rich liquid storage device 8 is a rich liquid storage tank.
本实施例中，所述第一换热装置7和所述CO
2再生装置10之间还设有热贫液泵12；所述热贫液泵12的第一端与所述CO
2再生装置10的第三端连通，所述热贫液泵12的第二端与所述第一换热装置7的第三端连通，所述热贫液泵12适于驱动贫液由CO
2再生装置10的第三端向第一换热装置7的第三端流通；具体在本实施例中，所述CO
2再生装置10的第三端为贫液出口，所述第一换热装置7的第三端为贫液进口。
In this embodiment, a hot lean liquid pump 12 is also provided between the first heat exchange device 7 and the CO2 regeneration device 10; the first end of the hot lean liquid pump 12 is connected to the CO2 regeneration device 10 communicates with the third end, the second end of the hot lean liquid pump 12 communicates with the third end of the first heat exchange device 7, and the hot lean liquid pump 12 is suitable for driving the lean liquid from the CO2 regeneration device The third end of 10 flows to the third end of the first heat exchange device 7; specifically in this embodiment, the third end of the CO regeneration device 10 is the lean liquid outlet, and the The third end is the poor liquid inlet.
本实施例中，所述CO
2再生装置10的贫液出口和贫液进口之间设置有加热装置11，其中，所述CO
2再生装置10的第三端和所述CO
2再生装置10的第四端之间还设有加热装置11。例如，所述加热装置11为再沸器。本申请在再生塔底部设有再沸器，通过再沸器加热的方式将富液中的CO
2与吸收剂分离。
In this embodiment, a heating device 11 is provided between the lean liquid outlet and the lean liquid inlet of the CO2 regeneration device 10, wherein the third end of the CO2 regeneration device 10 and the CO2 regeneration device 10 A heating device 11 is also provided between the fourth ends. For example, the heating device 11 is a reboiler. This application is equipped with a reboiler at the bottom of the regeneration tower, and the CO2 in the rich liquid is separated from the absorbent by heating the reboiler.
所述第一换热装置7与CO
2吸收装置5之间还设有贫液储存装置13和冷贫液泵14；具体来说，所述第一换热装置7的第四端与所述贫液储存装置13的第一端连通，所述贫液储存装置13的第二端与冷贫液泵14的第一端连接，所述冷贫液泵14的第二端与CO
2吸收装置5的第三端连通。
A lean liquid storage device 13 and a cold lean liquid pump 14 are also provided between the first heat exchange device 7 and the CO2 absorption device 5; specifically, the fourth end of the first heat exchange device 7 is connected to the The first end of the lean liquid storage device 13 is communicated, the second end of the lean liquid storage device 13 is connected to the first end of the cold lean liquid pump 14, and the second end of the cold lean liquid pump 14 is connected to the CO2 absorption device The third end of 5 is connected.
在本实施例中，所述第一换热装置7的第四端为贫液出口，CO
2吸收装置5的第三端为贫液进口。在本实施例中，所述贫液储存装置13为贫液储存罐。
In this embodiment, the fourth end of the first heat exchange device 7 is the lean liquid outlet, and the third end of the CO 2 absorption device 5 is the lean liquid inlet. In this embodiment, the lean liquid storage device 13 is a lean liquid storage tank.
本实施例利用可再生能源发电系统1产生的弃电为空气捕碳系统2和CO
2压缩储能系统3供电，不仅不会对可再生能源发电系统1产生影响，还有效解决了可再生能源的调峰问题，且可再生能源储量丰富，在开发利用过程中对环境影响较小，利用波动性新能源驱动捕碳系统直接从空气中捕集CO
2，能够降低空气中CO
2含量，并且在捕碳过程中不产生附加的CO
2，是缓解全球气候变化的重要途径之一。利用从空气中捕集到的CO
2作为能量储存介质，具有储能密度高、应用灵活、经济环保、转换效率高等优点，在波动性可再生能源储能调峰领域具备很好的应用前景。可再生能源发电、空气直接捕碳和CO
2压缩储能三者有效集成，整个系统可灵活运行，当有弃电时空气直接捕碳和CO
2压缩步骤运行，当电量不足时CO
2膨胀做功步骤运行。此外，富液储存装置、贫液储存装置、CO
2气体储存装置、CO
2液体储存装置的存在，将捕碳的吸收环节、捕碳的解析环节、CO
2的压缩储能环节独立控制，有利于提高集成系统接受波动性新能源的能力。设备安装受地点约束较少，适用于有可再生能源发电的多种场所。即本申请提供的装置通过可再生能源发电系统1，空气捕碳系统2和CO
2压缩储能系统3的集成，实现 了可再生能源驱动空气直接捕碳与CO
2压缩储能进行可再生能源发电调峰的耦合，既解决了可再生能源的调峰问题，同时还达到了碳减排、CO
2资源化利用的多重目标。
In this embodiment, the waste electricity generated by the renewable energy power generation system 1 is used to supply power for the air carbon capture system 2 and the CO2 compression energy storage system 3, which not only does not affect the renewable energy power generation system 1, but also effectively solves the problem of renewable energy peak shaving problem, and renewable energy reserves are abundant, and have little impact on the environment during the development and utilization process. Using fluctuating new energy to drive the carbon capture system to directly capture CO 2 from the air can reduce the CO 2 content in the air, and No additional CO 2 is produced in the process of carbon capture, which is one of the important ways to alleviate global climate change. Using CO2 captured from the air as an energy storage medium has the advantages of high energy storage density, flexible application, economical and environmental protection, and high conversion efficiency. Renewable energy power generation, air direct carbon capture and CO 2 compression energy storage are effectively integrated, and the entire system can operate flexibly. When there is power curtailment, the air direct carbon capture and CO 2 compression steps operate, and when the power is insufficient, CO 2 expands to do work Steps run. In addition, the existence of rich liquid storage device, lean liquid storage device, CO 2 gas storage device, and CO 2 liquid storage device can independently control the absorption link of carbon capture, the analysis link of carbon capture, and the compression energy storage link of CO 2 . It is conducive to improving the ability of the integrated system to accept fluctuating new energy. Equipment installation is less restricted by location, and is suitable for various places with renewable energy power generation. That is, the device provided by this application realizes renewable energy-driven air direct carbon capture and CO2 compression energy storage for renewable energy through the integration of renewable energy power generation system 1, air carbon capture system 2 and CO2 compression energy storage system 3. The coupling of power generation peak shaving not only solves the problem of renewable energy peak shaving, but also achieves multiple goals of carbon emission reduction and CO2 resource utilization.
实施例2Example 2
本实施例提供一种捕碳调峰耦合方法，包括如下步骤：This embodiment provides a coupling method for carbon capture and peak regulation, including the following steps:
S1：空气压缩装置4从外界吸取空气，经由CO
2吸收装置5向CO
2再生装置10传输，通过CO
2气体储存装置16存储；
S1: The air compression device 4 sucks air from the outside, transmits it to the CO regeneration device 10 via the CO 2 absorption device 5, and stores it in the CO 2 gas storage device 16;
所述空气压缩装置4为空气压缩机；CO
2吸收装置5为CO
2吸收塔，吸收塔内设置有CO
2吸收剂，CO
2吸收剂为单乙醇胺；CO
2再生装置10可为再生塔，CO
2富液在再生塔中在高温作用下进行解析进而释放CO
2，控制再生塔内富液温度为110℃；CO
2气体储存装置16为CO
2储存罐；
The air compression device 4 is an air compressor; the CO2 absorption device 5 is a CO2 absorption tower, and the CO2 absorbent is arranged in the absorption tower, and the CO2 absorbent is monoethanolamine; the CO2 regeneration device 10 can be a regeneration tower, The CO 2 rich liquid is decomposed under high temperature in the regeneration tower to release CO 2 , and the temperature of the rich liquid in the regeneration tower is controlled to be 110°C; the CO 2 gas storage device 16 is a CO 2 storage tank;
可再生能源发电系统1中的弃电为空气捕碳系统2和CO
2压缩储能系统3供电；空气通过空气压缩机进入CO
2吸收塔底部，来自贫液储存罐的贫液经冷贫液泵后自塔顶进入吸收塔，吸收塔中的吸收剂和空气逆向接触，吸收剂对CO
2进行选择性吸收，脱碳处理后的空气自吸收塔的塔顶排到大气中，吸收CO
2后的富液自吸收塔底部的富液出口流出后，经冷富液泵在换热器处与来自再生塔的贫液进行换热后，流向富液储存罐储存；
The curtailed electricity in the renewable energy power generation system 1 supplies power to the air carbon capture system 2 and the CO2 compression energy storage system 3; the air enters the bottom of the CO2 absorption tower through the air compressor, and the lean liquid from the lean liquid storage tank goes through the cold lean liquid After the pump, it enters the absorption tower from the top of the tower, and the absorbent in the absorption tower is in reverse contact with the air. The absorbent selectively absorbs CO 2 , and the air after decarbonization is discharged into the atmosphere from the top of the absorption tower to absorb CO 2 After the final rich liquid flows out from the rich liquid outlet at the bottom of the absorption tower, the cold rich liquid pump exchanges heat with the lean liquid from the regeneration tower at the heat exchanger, and then flows to the rich liquid storage tank for storage;
S2：所述CO
2气体储存装置16中的CO
2压缩并降温液化成液态CO
2，第二换热装置19储存所述压缩过程以及液化过程释放的热能，冷却后的液态CO
2存储于CO
2液体储存装置20内；
S2: The CO 2 in the CO 2 gas storage device 16 is compressed and cooled to liquefy into liquid CO 2 , the second heat exchange device 19 stores the heat energy released during the compression process and the liquefaction process, and the cooled liquid CO 2 is stored in the CO 2 inside the liquid storage device 20;
当再生塔工作时，富液储存罐中的富液经热富液泵进入再生塔中进行再生，塔底设有再沸器，再沸器由可再生能源发电系统1驱动，为再生塔提供热量；从再生塔中再生后的贫液经热贫液泵后在换热器处与来自吸收塔的冷富液换热后，流向贫液储存罐，继续循环使用；从再生塔的顶部出来的CO
2气体经CO
2压缩机进入CO
2气体储存罐保存，用于CO
2压缩储能；在CO
2压缩储能系统3中，CO
2气体储存罐中的CO
2气体在CO
2压缩机进一步压缩，并降温液化成液态CO
2，通过相变储能换热系统储存所述压缩过程以及液化过程释放的热能；
When the regeneration tower is working, the rich liquid in the rich liquid storage tank enters the regeneration tower through the hot rich liquid pump for regeneration. There is a reboiler at the bottom of the tower, and the reboiler is driven by the renewable energy power generation system 1 to provide energy for the regeneration tower. Heat; the lean liquid regenerated from the regeneration tower passes through the hot lean liquid pump and exchanges heat with the cold rich liquid from the absorption tower at the heat exchanger, then flows to the lean liquid storage tank and continues to be recycled; it comes out from the top of the regeneration tower The CO 2 gas enters the CO 2 gas storage tank through the CO 2 compressor for storage, and is used for CO 2 compression energy storage; in the CO 2 compression energy storage system 3, the CO 2 gas in the CO 2 gas storage tank is stored in the CO 2 compressor Further compression, cooling and liquefaction into liquid CO 2 , storing the heat energy released during the compression process and liquefaction process through the phase change energy storage heat exchange system;
S3：所述CO
2液体储存装置20内的液态CO
2通过吸收所述第二换热装置19内储存的热能并减压气化，进入膨胀机21做功，带动发电机组22发电。当需要用电时，所述液态CO
2通过吸收所述相变储能换热系统储存的热能、减压气 化后，进入膨胀机做功，所述膨胀机带动发电机组发电。做功后的CO
2再次进入CO
2气体储存装置进行储存，以实现循环利用的目的。
S3: The liquid CO 2 in the CO 2 liquid storage device 20 absorbs the heat energy stored in the second heat exchange device 19 and decompresses and gasifies, enters the expander 21 to do work, and drives the generator set 22 to generate electricity. When electricity is needed, the liquid CO2 absorbs the heat energy stored in the phase change energy storage heat exchange system, decompresses and gasifies, and then enters the expander to do work, and the expander drives the generator set to generate electricity. The CO 2 after doing work enters the CO 2 gas storage device for storage again, so as to achieve the purpose of recycling.
本实施例提供的捕碳调峰耦合方法中，当可再生能源发电系统1具有弃电输出时，驱动空气捕碳系统2工作，利用化学吸收法直接从空气中捕集二氧化碳捕集得到的二氧化碳在CO
2压缩储能系统3中进行相变压缩储能。当需要用电时，所述液态CO
2通过吸收相变储能换热系统储存的热能、减压气化后，进入膨胀机做功，所述膨胀机带动发电机组发电。
In the carbon capture peak shaving coupling method provided in this embodiment, when the renewable energy power generation system 1 has a power-suppression output, the air carbon capture system 2 is driven to work, and the carbon dioxide captured by the carbon dioxide capture is directly captured from the air by the chemical absorption method Phase change compression energy storage is performed in the CO2 compression energy storage system 3. When electricity is needed, the liquid CO2 absorbs the heat energy stored in the phase change energy storage heat exchange system, decompresses and gasifies, and then enters the expander to do work, and the expander drives the generator set to generate electricity.
具体来说，在本申请中可再生能源发电系统1中的弃电为空气捕碳系统2和CO
2压缩储能系统3供电；空气通过空气压缩机进入CO
2吸收塔，吸收塔中的碳捕集化学吸收剂，如：单乙醇胺或混合胺，实现对CO
2进行选择性吸收，吸收CO
2后的富液自吸收塔底部的富液出口流出后经过换热器进入富液储存罐；富液储存罐中的富液经过管路输送至CO
2再生塔进行CO
2再生，再生后的贫液从再生塔的底部流出并经过换热器输送至贫液储存罐备用；再生过程得到的CO
2气体经CO
2压缩机送至CO
2气体储存罐。CO
2气体储存罐中的CO
2气体在CO
2压缩机进一步压缩，并降温液化成液态CO
2，通过相变储能换热系统储存所述压缩过程以及液化过程释放的热能；当需要用电时，也即在步骤S3中时，所述液态CO
2吸收所述相变储能换热系统储存的热能、减压气化后，进入膨胀机做功，所述膨胀机带动发电机组发电。做功后的CO
2再次进入CO
2气体储存装置进行储存，以实现循环利用的目的。
Specifically, in this application, the waste electricity in the renewable energy power generation system 1 supplies power for the air carbon capture system 2 and the CO2 compression energy storage system 3; the air enters the CO2 absorption tower through the air compressor, and the carbon in the absorption tower Capture chemical absorbents, such as monoethanolamine or mixed amines, to achieve selective absorption of CO 2 , and the rich liquid after absorbing CO 2 flows out from the rich liquid outlet at the bottom of the absorption tower and enters the rich liquid storage tank through a heat exchanger; The rich liquid in the rich liquid storage tank is transported to the CO 2 regeneration tower through pipelines for CO 2 regeneration, and the regenerated lean liquid flows out from the bottom of the regeneration tower and is transported to the lean liquid storage tank through a heat exchanger for standby; the regeneration process The CO 2 gas is sent to the CO 2 gas storage tank through the CO 2 compressor. The CO 2 gas in the CO 2 gas storage tank is further compressed in the CO 2 compressor, and cooled to liquefy into liquid CO 2 , and the heat energy released during the compression process and the liquefaction process is stored through the phase change energy storage heat exchange system; when electricity is needed , that is, in step S3, the liquid CO2 absorbs the heat energy stored in the phase change energy storage heat exchange system, decompresses and gasifies, and then enters the expander to do work, and the expander drives the generator set to generate electricity. The CO 2 after doing work enters the CO 2 gas storage device for storage again, so as to achieve the purpose of recycling.
基于上述装置中进行空气直接捕碳和CO
2压缩储能对可再生能源进行调峰：当可再生能源发电系统1具有弃电输出时，驱动空气捕碳系统2工作，利用单乙醇胺作为化学吸收剂直接从空气中捕集CO
2；在CO
2压缩储能系统3中，捕集得到的CO
2进行相变压缩储能，当需要用电时，液态CO
2通过吸收相变储能换热系统储存的热能、减压气化后，进入膨胀机做功，所述膨胀机带动发电机组发电进行调峰。
Based on the direct air carbon capture and CO2 compression energy storage in the above-mentioned device, the renewable energy can be peak-shaving: when the renewable energy power generation system 1 has power-suppression output, the air carbon capture system 2 is driven to work, and monoethanolamine is used as a chemical absorber CO 2 is captured directly from the air by the agent; in the CO 2 compression energy storage system 3, the captured CO 2 is compressed for energy storage in phase change. After the thermal energy stored in the system is decompressed and gasified, it enters the expander to do work, and the expander drives the generating set to generate electricity for peak regulation.
实施例3Example 3
本实施例提供一种捕碳调峰耦合方法，采用实施例1中提供的捕碳调峰耦合装置。This embodiment provides a carbon capture peak regulation coupling method, using the carbon capture peak regulation coupling device provided in Embodiment 1.
实施例4Example 4
本实施例提供了一种捕碳调峰耦合装置，其与实施例1相比区别在于，所述可再生能源发电系统1是光伏发电系统，化学吸收剂是混合胺。This embodiment provides a carbon capture peak regulation coupling device, which is different from Embodiment 1 in that the renewable energy power generation system 1 is a photovoltaic power generation system, and the chemical absorbent is a mixed amine.
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本申请创造的保护范围之中。Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived therefrom are still within the protection scope of the invention of the present application.
Claims (10)
- 一种捕碳调峰耦合装置，其特征在于，包括可再生能源发电系统(1)、空气捕碳系统(2)和CO 2压缩储能系统(3)； A carbon capture peak regulation coupling device, characterized in that it includes a renewable energy power generation system (1), an air carbon capture system (2) and a CO2 compression energy storage system (3);所述空气捕碳系统(2)适于从空气中捕集CO 2，其包括：空气压缩装置(4)、CO 2吸收装置(5)、CO 2再生装置(10)以及CO 2气体储存装置(16)；所述空气压缩装置(4)的第一端与外界空气连通，适于由外界吸收空气，所述空气压缩装置(4)的第二端与所述CO 2吸收装置(5)的第一端连通，所述CO 2吸收装置(5)的第二端与所述CO 2再生装置(10)的第一端连通，所述CO 2再生装置(10)的第二端与所述CO 2气体储存装置(16)的第一端连通，所述CO 2吸收装置(5)的第四端与外界连通，适于向外界排出脱碳处理后的空气； The air carbon capture system (2) is suitable for capturing CO 2 from the air, which includes: an air compression device (4), a CO 2 absorption device (5), a CO 2 regeneration device (10) and a CO 2 gas storage device (16); the first end of the air compression device (4) communicates with the outside air, and is suitable for absorbing air from the outside, and the second end of the air compression device (4) is connected to the CO2 absorption device (5) The first end of the CO2 absorption device (5) communicates with the first end of the CO2 regeneration device (10), and the second end of the CO2 regeneration device (10) communicates with the CO2 regeneration device (10). The first end of the CO2 gas storage device (16) communicates with the outside, and the fourth end of the CO2 absorber (5) communicates with the outside world, and is suitable for discharging the decarburized air to the outside world;CO 2压缩储能系统(3)包括：第二CO 2压缩装置(17)、电动机组(18)、第二换热装置(19)、CO 2液体储存装置(20)、膨胀机(21)和发电机组(22)；其中，电动机组(18)对所述第二CO 2压缩装置(17)供电，膨胀机(21)适于带动所述发电机组(22)发电，所述第二CO 2压缩装置(17)的第一端与所述CO 2气体储存装置(16)的第二端连通，所述第二CO 2压缩装置(17)的第二端与所述第二换热装置(19)的第一端连通，所述第二换热装置(19)的第二端连通与所述CO 2液体储存装置(20)的第一端连通，且所述CO 2液体储存装置(20)的第二端与所述第二换热装置(19)的第三端连通，所述第二换热装置(19)的第四端与所述膨胀机(21)的第一端连通；所述膨胀机(21)的第二端与所述CO 2气体储存装置(16)的第一端连通； The CO2 compression energy storage system (3) includes: a second CO2 compression device (17), a motor unit (18), a second heat exchange device (19), a CO2 liquid storage device (20), and an expander (21) and generator set (22); wherein, the motor unit (18) supplies power to the second CO2 compression device (17), and the expander (21) is adapted to drive the generator set (22) to generate electricity, and the second CO 2. The first end of the compression device (17) communicates with the second end of the CO2 gas storage device (16), and the second end of the second CO2 compression device (17) communicates with the second heat exchange device The first end of (19) communicates, the second end of the second heat exchange device (19) communicates with the first end of the CO2 liquid storage device (20), and the CO2 liquid storage device ( The second end of 20) communicates with the third end of the second heat exchange device (19), and the fourth end of the second heat exchange device (19) communicates with the first end of the expander (21) ; The second end of the expander (21) communicates with the first end of the CO gas storage device (16);所述CO 2压缩储能系统(3)具有通过第二CO 2压缩装置(17)将所述CO 2气体储存装置(16)输出的CO 2气体进行压缩和降温液化为液态CO 2的释放热能状态，在所述释放热能状态下热能由所述第二换热装置(19)储存，且通过所述第二换热装置(19)将冷却后的液态CO 2存储于CO 2液体储存装置(20)内； The CO2 compression energy storage system (3) has the release heat energy of compressing and cooling the CO2 gas output by the CO2 gas storage device (16) into liquid CO2 through the second CO2 compression device (17) state, in the state of releasing heat energy, heat energy is stored by the second heat exchange device (19), and the cooled liquid CO2 is stored in the CO2 liquid storage device ( 20);所述CO 2压缩储能系统(3)还具有所述CO 2液体储存装置(20)内的液态CO 2通过吸收所述第二换热装置(19)内储存的热能且减压气化后，进入膨胀机(21)做功，以通过所述膨胀机(21)带动发电机组(22)发电的发电状态； The CO2 compression energy storage system (3) also has the liquid CO2 in the CO2 liquid storage device (20) absorbing the thermal energy stored in the second heat exchange device (19) and depressurizing and gasifying , enter the power generation state of the expander (21) to drive the generating set (22) to generate electricity through the expander (21);所述CO 2压缩储能系统(3)在所述放热能状态和所述发电状态之间切换设置。 The CO2 compression energy storage system (3) is set to switch between the heat release energy state and the power generation state.
- 根据权利要求1中所述的捕碳调峰耦合装置，其特征在于，According to the carbon capture peak regulation coupling device described in claim 1, it is characterized in that,所述空气捕碳系统(2)还包括，The air carbon capture system (2) also includes,第一换热装置(7)，设置在所述CO 2吸收装置(5)的第二端与所述CO 2再生装置(10)的第一端之间，所述第一换热装置(7)的第一端与所述CO 2吸收装置(5)的第二端连通，所述第一换热装置(7)的第二端与CO 2再生装置(10)的第一端连通。 A first heat exchange device (7), arranged between the second end of the CO2 absorption device (5) and the first end of the CO2 regeneration device (10), the first heat exchange device (7) ) communicates with the second end of the CO2 absorption device (5), and the second end of the first heat exchange device (7) communicates with the first end of the CO2 regeneration device (10).
- 根据权利要求2中所述的捕碳调峰耦合装置，其特征在于，所述第一换热装置(7)的第一端与所述CO 2吸收装置(5)的第二端之间还设置有冷富液泵(6)； According to the carbon capture peak regulation coupling device described in claim 2, it is characterized in that, between the first end of the first heat exchange device (7) and the second end of the CO2 absorption device (5) A cold rich liquid pump (6) is provided;所述CO 2吸收装置(5)的第二端与所述冷富液泵(6)的第一端连通；冷富液泵(6)的第二端与所述第一换热装置(7)的第一端连通。 The second end of the CO2 absorption device (5) communicates with the first end of the cold rich liquid pump (6); the second end of the cold rich liquid pump (6) communicates with the first heat exchange device (7 ) is connected at the first end.
- 根据权利要求3中所述的捕碳调峰耦合装置，其特征在于，According to the carbon capture peak regulation coupling device described in claim 3, it is characterized in that,所述第一换热装置(7)的第二端与所述CO 2再生装置(10)的第一端之间还设置有富液储存装置(8)和热富液泵(9)；所述第一换热装置(7)的第二端与富液储存装置(8)的第一端连接，所述富液储存装置(8)的第二端与CO 2再生装置(10)的第一端连接。 A rich liquid storage device (8) and a hot rich liquid pump (9) are also arranged between the second end of the first heat exchange device (7) and the first end of the CO regeneration device (10); The second end of the first heat exchange device (7) is connected to the first end of the rich liquid storage device (8), and the second end of the rich liquid storage device (8) is connected to the second end of the CO2 regeneration device (10). Connected at one end.
- 根据权利要求4中所述的捕碳调峰耦合装置，其特征在于，所述第一换热装置(7)和所述CO 2再生装置(10)之间还设有热贫液泵(12)；所述热贫液泵(12)的第一端与所述CO 2再生装置(10)的第三端连通，所述热贫液泵(12)的第二端与所述第一换热装置(7)的第三端连通，所述热贫液泵(12)适于驱动贫液由CO 2再生装置(10)的第三端向第一换热装置(7)的第三端流通；所述CO 2再生装置(10)的第三端和所述CO 2再生装置(10)的第四端之间还设有加热装置(11)。 According to the carbon capture peak regulation coupling device described in claim 4, it is characterized in that a hot lean liquid pump (12) is also provided between the first heat exchange device (7) and the CO regeneration device (10) ); the first end of the hot lean liquid pump (12) communicates with the third end of the CO regeneration device (10), and the second end of the hot lean liquid pump (12) communicates with the first exchange The third end of the thermal device (7) communicates, and the hot lean liquid pump (12) is adapted to drive the lean liquid from the third end of the CO regeneration device (10) to the third end of the first heat exchange device (7) Circulation; a heating device (11) is also provided between the third end of the CO2 regeneration device (10) and the fourth end of the CO2 regeneration device (10).
- 根据权利要求5中所述的捕碳调峰耦合装置，其特征在于，According to the carbon capture peak regulation coupling device described in claim 5, it is characterized in that,所述第一换热装置(7)与CO 2吸收装置(5)之间还设有贫液储存装置(13)和冷贫液泵(14)； A lean liquid storage device (13) and a cold lean liquid pump (14) are also provided between the first heat exchange device (7) and the CO2 absorption device (5);所述第一换热装置(7)的第四端与所述贫液储存装置(13)的第一端连通，所述贫液储存装置(13)的第二端与冷贫液泵(14)的第一端连接，所述冷贫液泵(14)的第二端与CO 2吸收装置(5)的第三端连通。 The fourth end of the first heat exchange device (7) communicates with the first end of the lean liquid storage device (13), and the second end of the lean liquid storage device (13) communicates with the cold lean liquid pump (14 ), the second end of the cold lean liquid pump (14) communicates with the third end of the CO2 absorption device (5).
- 根据权利要求1-6中任一项所述的捕碳调峰耦合装置，其特征在于，The carbon capture and peak regulation coupling device according to any one of claims 1-6, characterized in that,所述CO 2吸收装置(5)为CO 2吸收塔，吸收塔内设置有CO 2吸收剂； Described CO Absorption device (5) is CO Absorption tower, is provided with CO Absorbent in the absorption tower;所述CO 2再生装置(10)为CO 2再生塔。 The CO 2 regeneration device (10) is a CO 2 regeneration tower.
- 根据权利要求1-7中任一项所述的捕碳调峰耦合装置，其特征在于， 所述CO 2再生装置(10)和CO 2气体储存装置(16)之间设置有第一CO 2压缩装置(15)，所述CO 2再生装置(10)的第二端与第一CO 2压缩装置(15)的第一端连通，所述第一CO 2压缩装置(15)的第二端与所述CO 2气体储存装置(16)的第一端连通。 The carbon capture peak shaving coupling device according to any one of claims 1-7, characterized in that, a first CO 2 is set between the CO 2 regeneration device (10) and the CO 2 gas storage device (16) Compression device (15), the second end of the CO2 regeneration device (10) communicates with the first end of the first CO2 compression device (15), the second end of the first CO2 compression device (15) It communicates with the first end of the CO2 gas storage device (16).
- 一种捕碳调峰耦合方法，其特征在于，包括：A coupling method for carbon capture and peak regulation, characterized in that it includes:S1：空气压缩装置(4)从外界吸取空气，经由CO 2吸收装置(5)向CO 2再生装置(10)传输，通过CO 2气体储存装置(16)存储； S1: The air compression device (4) absorbs air from the outside, transmits it to the CO2 regeneration device (10) via the CO2 absorption device (5), and stores it through the CO2 gas storage device (16);S2：所述CO 2气体储存装置(16)中的CO 2压缩并降温液化成液态CO 2，第二换热装置(19)储存所述压缩过程以及液化过程释放的热能，冷却后的液态CO 2存储于CO 2液体储存装置(20)内； S2: The CO 2 in the CO 2 gas storage device (16) is compressed and cooled to liquefy into liquid CO 2 , the second heat exchange device (19) stores the heat energy released during the compression process and the liquefaction process, and the cooled liquid CO 2 stored in the CO2 liquid storage device (20);S3：所述CO 2液体储存装置(20)内的液态CO 2通过吸收所述第二换热装置(19)内储存的热能并减压气化，进入膨胀机(21)做功，带动发电机组(22)发电。 S3: The liquid CO2 in the CO2 liquid storage device (20) absorbs the heat energy stored in the second heat exchange device (19) and decompresses and gasifies, enters the expander (21) to do work, and drives the generator set (22) Power generation.
- 根据权利要求9中所述的捕碳调峰耦合方法，其特征在于，采用权利要求1-8中任一项所述的捕碳调峰耦合装置。The carbon capture peak regulation coupling method according to claim 9, characterized in that the carbon capture peak regulation coupling device described in any one of claims 1-8 is used.
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