CN114471078A - Temperature swing adsorption device and method for capturing carbon dioxide in flue gas for power plant - Google Patents
Temperature swing adsorption device and method for capturing carbon dioxide in flue gas for power plant Download PDFInfo
- Publication number
- CN114471078A CN114471078A CN202210101488.1A CN202210101488A CN114471078A CN 114471078 A CN114471078 A CN 114471078A CN 202210101488 A CN202210101488 A CN 202210101488A CN 114471078 A CN114471078 A CN 114471078A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- valve
- temperature
- flue gas
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 249
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 125
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 125
- 239000003546 flue gas Substances 0.000 title claims abstract description 92
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000007789 gas Substances 0.000 claims abstract description 39
- 239000003463 adsorbent Substances 0.000 claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims description 30
- 238000003795 desorption Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 abstract description 6
- 238000011069 regeneration method Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 3
- 239000006096 absorbing agent Substances 0.000 abstract 2
- 239000003507 refrigerant Substances 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 abstract 1
- 230000009467 reduction Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008236 biological pathway Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0462—Temperature swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0438—Cooling or heating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/60—Sorption with dry devices, e.g. beds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Of Gases By Adsorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a temperature swing adsorption device and a temperature swing adsorption method for capturing carbon dioxide in flue gas for a power plant, and belongs to the field of flue gas purification of coal-fired power plants. The hot water port of the solar water heater is connected with the inlet of a hot water storage tank, the outlet of the hot water storage tank is respectively connected with a carbon dioxide heater shell pass and a hot water channel of a refrigerator and is converged to a cold water return port of the solar water heater through a pipeline, the outlet of a refrigerant channel of the refrigerator is sequentially connected with a flue gas cooler working medium channel and a refrigerator working medium channel inlet, a variable temperature absorber is sequentially connected with the flue gas cooler shell pass, a shell pass wound with a heat exchanger and a flue gas pipeline, and a tail gas channel wound with the heat exchanger is respectively connected with the variable temperature absorber. According to the solar water heater, solar heat collection is used as a heat driving energy source, heat required by adsorbent regeneration and refrigeration of the refrigerator can be provided at the same time, and after cold energy of the system is recovered by winding the heat exchanger, the energy utilization efficiency of the device is remarkably improved.
Description
Technical Field
The invention belongs to the field of flue gas purification of coal-fired power plants, and particularly relates to a temperature swing adsorption device and a temperature swing adsorption method for capturing flue gas carbon dioxide for a power plant.
Background
With the progress of industrialization, a large amount of fossil fuel is consumed, leading to an increase in the concentration of carbon dioxide in the atmosphere, and the global climate is increasingly warmed. Therefore, the capture of carbon dioxide in flue gas has become an important strategic means for dealing with climate change and acid rain pollution. At the same time, the recovered carbon dioxide can be used to produce important carbon-containing products through different chemical or biological pathways, which has important economic and environmental benefits. The absolute amount of carbon dioxide gas discharged from the flue gas of the coal-fired power plant accounts for about half of the total amount of carbon dioxide gas discharged in China, and is the most main emission source of greenhouse gas in China. Therefore, the emission reduction of the carbon oxide gas in the flue gas of the coal-fired power plant is one of the bottlenecks of the future sustainable development of coal-fired power generation in China and is not slow at all.
At present, the carbon dioxide trapping technology is mainly suitable for gases with high carbon dioxide content in the chemical field, and is characterized in that the partial pressure of carbon dioxide components is high and often exceeds 0.(5) atmospheric pressure. The commonly used methods for carbon dioxide removal mainly include: absorption, adsorption, cryogenic separation, membrane separation, and the like. When the method is applied in the chemical field, the energy consumption of the whole separation process is lower due to higher partial pressure of the carbon dioxide component. However, for the flue gas of a coal-fired power plant, the partial pressure of carbon dioxide is very low, the usage amount of the absorbent in the separation process is very large, and the heat consumption for the regeneration of the absorbent is also very large. The heat source form of the existing flue gas carbon dioxide trapping device for the power plant mostly uses steam extraction, flue gas waste heat and the like of the power plant as a regenerative heat source, so that the power generation efficiency of the power plant is reduced, and meanwhile, the application range and the popularization and operation of the device can be further limited due to the limitation of high requirement on the temperature of the heat source. Therefore, reducing the energy consumption of carbon dioxide capture and improving the process economy are the main problems of carbon dioxide capture in coal-fired power plants.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a temperature swing adsorption device and a temperature swing adsorption method for capturing carbon dioxide in flue gas of a power plant.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a temperature swing adsorption device for capturing flue gas carbon dioxide for a power plant comprises a solar water heater, a hot water storage tank, a refrigerator, a winding heat exchanger, a carbon dioxide heater, a flue gas cooler, a first temperature swing adsorption device and a second temperature swing adsorption device,
the hot water outlet of the solar water heater is connected with the inlet of a hot water storage tank, the outlet of the hot water storage tank is respectively connected with the hot water channel inlet of a refrigerator and the shell pass inlet of a carbon dioxide heater, the outlet of the hot water channel of the refrigerator is connected with the cold water return port of the solar water heater through a pipeline, and the shell pass outlet of the carbon dioxide heater is connected with the cold water return port of the solar water heater through a pipeline;
the working medium outlet of the refrigerator is sequentially connected with the tube pass of the flue gas cooler and the working medium channel inlet of the refrigerator through pipelines.
The system further comprises a winding heat exchanger, wherein a shell pass inlet of the winding heat exchanger is connected with a flue gas pipeline, a shell pass outlet of the winding heat exchanger is connected with a shell pass inlet of a flue gas cooler, the pipeline of the shell pass outlet of the flue gas cooler is divided into two branches which are respectively connected with a bottom communicating port of a first variable temperature adsorber and a bottom communicating port of a second variable temperature adsorber, a branch where the first variable temperature adsorber is located is provided with a third valve, and a branch where the second variable temperature adsorber is located is provided with a fourth valve;
the top communicating port of the first temperature-changing adsorber and the top communicating port of the second temperature-changing adsorber are intersected into a pipeline through a branch, the pipeline is connected with a tail gas channel of the winding heat exchanger, the tail gas channel of the winding heat exchanger is connected with a tail gas pipeline, a seventh valve is arranged on a branch where the top communicating port of the first temperature-changing adsorber is located, and a valve is arranged on a branch where the top communicating port of the second temperature-changing adsorber is located;
a pipe pass inlet of the carbon dioxide heater is connected with a carbon dioxide pipeline, the other side of the pipe pass of the carbon dioxide heater is connected with a pipeline, the pipeline is divided into two bypasses, one bypass is connected with a branch on a top communicating port of the first temperature-changing adsorber through a fifth valve, and the other bypass is connected with a branch on a top communicating port of the second temperature-changing adsorber through a sixth valve;
the carbon dioxide pipeline is also connected with a pipeline, the pipeline is divided into two bypasses, one bypass is connected with a branch on a bottom communicating port of the first temperature-changing adsorber through a first valve, and the other bypass is connected with a branch on a bottom communicating port of the second temperature-changing adsorber through a second valve.
Further, the method comprises the following steps:
the solar water heater heats water by using sunlight, and the hot water is stored in a hot water storage tank;
hot water in the hot water storage tank flows into a hot water channel of a refrigerator and a shell pass of a carbon dioxide heater through pipelines respectively, hot water in the hot water channel of the refrigerator is used for driving to obtain a low-temperature working medium, the low-temperature working medium enters a tube pass of a flue gas cooler, flue gas in the shell pass is cooled to a temperature required by adsorption of a solid adsorbent, and then the low-temperature working medium after heat exchange returns to a working medium channel inlet of the refrigerator;
the carbon dioxide heater enters carbon dioxide gas through a carbon dioxide pipeline at a tube pass inlet, the carbon dioxide gas is heated to a temperature required by desorption of a solid adsorbent by hot water of a carbon dioxide heater shell pass, then the heated carbon dioxide gas enters a first temperature-changing adsorber through a pipeline where a fifth valve is located or enters a second temperature-changing adsorber through a pipeline where a sixth valve is located, and the heated carbon dioxide gas is used for desorbing the solid adsorbents in the first temperature-changing adsorber and the second temperature-changing adsorber;
the normal-temperature flue gas enters a shell pass inlet of the winding heat exchanger through a flue gas pipeline, desorbed gas in the first temperature swing adsorber and the second temperature swing adsorber respectively enters a tube pass of the winding heat exchanger through a seventh valve and a pipeline where the valves are located, the flue gas of the shell pass of the winding heat exchanger is cooled, the cooled flue gas enters a flue gas cooler for cooling, then the flue gas enters the temperature swing adsorption step without desorption through a pipeline where the third valve or the fourth valve is located, and the cooled flue gas is used for enabling a solid adsorbent in the temperature swing adsorber to complete adsorption of carbon dioxide.
Furthermore, in the step, hot water in a hot water channel of the refrigerator and a shell pass of the carbon dioxide heater exchanges heat and then enters the solar water heater again.
Further, in the step, the gas which is wound in the tube pass of the heat exchanger and cools the flue gas wound on the shell pass of the heat exchanger enters a tail gas pipeline and is discharged,
further, when the solid adsorbent adsorbs carbon dioxide at low temperature, the flue gas from the shell pass outlet of the flue gas cooler enters the first temperature-changing adsorber after passing through the pipeline and the third valve, the adsorption of the flue gas carbon dioxide is completed in the first temperature-changing adsorber, and the tail gas obtained after the carbon dioxide removal enters the pipe pass of the wound heat exchanger and the tail gas pipeline in sequence after passing through the pipeline and the seventh valve and is discharged;
in the above process, the first valve, the fourth valve, the fifth valve and the valve are all in the closed state.
Further, when the solid adsorbent desorbs carbon dioxide, the heated carbon dioxide gas in the tube pass of the carbon dioxide heater enters a second temperature swing adsorber after passing through the pipeline and a sixth valve, the desorption of the carbon dioxide adsorbed by the solid adsorbent is completed in the second temperature swing adsorber, and the desorbed carbon dioxide and the carbon dioxide gas introduced as a heat carrier enter the carbon dioxide pipeline after passing through the pipeline and the second valve and are discharged;
in the above process, the first valve, the fourth valve, the fifth valve and the valve are all in a closed state.
Further, after the solid adsorbent in the first temperature-changing adsorber is saturated when adsorbing carbon dioxide, opening the first valve and the fifth valve, and closing the second valve, the fourth valve, the sixth valve and the seventh valve, wherein the solid adsorbent in the first temperature-changing adsorber is in a desorption state; and simultaneously, opening the fourth valve and the valve, closing the second valve, the third valve, the sixth valve and the seventh valve, and enabling the solid adsorbent in the second temperature-changing adsorber to be in an absorption state.
Further, it is characterized in that,
and operating the valve to enable the first temperature-changing adsorber and the second temperature-changing adsorber to be in a desorption state and an absorption state alternately, thereby realizing continuous operation of desorption and absorption.
Compared with the prior art, the invention has the following beneficial effects:
according to the temperature swing adsorption device and method for capturing the carbon dioxide in the flue gas for the power plant, disclosed by the invention, the solar heat energy is used as a medium and is used as a heat source of a refrigerator to obtain a cooling working medium, so that the temperature of the flue gas can be reduced, the adsorption of the solid adsorbent to the carbon dioxide is driven at a low temperature, and the power consumption is saved; the solar heat energy respectively takes water and carbon dioxide as media and is used as the driving force for thermal regeneration of the solid adsorbent, namely carbon dioxide desorption, so that the traditional steam consumption is saved; the low-temperature flue gas after carbon dioxide removal in the device is subjected to heat exchange with overtemperature through the winding heat exchanger, so that the utilization efficiency of heat is improved; the solar energy replaces the traditional energy, the cleanness and the renewability of the renewable energy are fully utilized to capture the carbon dioxide, and the economical efficiency and the environmental friendliness of the process are effectively improved; the hot water is easy to preserve heat and store, and enough hot water can be obtained during sunshine, so that the normal continuous and stable operation of the night flue gas carbon dioxide capture device can be driven; the device has the advantages of ingenious design, simple structure, small occupied area, strong adaptability and no dependence on the limitation of steam, and can be provided with an independent device at any position to collect carbon dioxide in flue gas. The solar water heater has the advantages of ingenious design, simple operation, high elasticity, low equipment investment and energy conservation, and can realize continuous uninterrupted work all day long. The invention can effectively reduce the energy consumption of carbon dioxide capture by the flue gas of the coal-fired power plant, and completely cancels the necessity of extracting steam from the power plant, thereby saving energy.
Drawings
FIG. 1 is a structural diagram of the present invention.
In the figure, 1-solar water heater; 2-a hot water storage tank refrigerator; 3-a refrigerator; 4-a carbon dioxide heater; 5-winding the heat exchanger; 6-a flue gas cooler; 7-temperature changing adsorber; 8-temperature changing adsorber; 13-a first valve; 14-a second valve; 15-a third valve; 16-a fourth valve; 17-a fifth valve; 18-a sixth valve; 19-a seventh valve; 21-flue gas duct; 35-a tail gas pipeline; 36-carbon dioxide pipeline.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention provides a temperature swing adsorption device for capturing carbon dioxide in flue gas for a power plant, which realizes high integration of a capturing process of the carbon dioxide and utilization of renewable energy sources, can realize the functions of separating and purifying the carbon dioxide in the flue gas of the power plant, can realize an emission reduction task by utilizing clean energy sources, and greatly improves the economy of capturing the carbon dioxide in the flue gas of the power plant.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, fig. 1 is a schematic structural diagram of the present invention, and a temperature swing adsorption device for capturing carbon dioxide from flue gas of a power plant mainly includes: the system comprises a solar water heater 1, a hot water storage tank 2, a refrigerator 3, a winding heat exchanger 5, a carbon dioxide heater 4, a flue gas cooler 6, a first temperature-changing adsorber 7 and a second temperature-changing adsorber 8; hot water obtained by the solar water heater 1 is connected with the hot water storage tank 2 through a hot water outlet of the solar water heater through a pipeline, and the hot water is stored in the hot water storage tank 2; the hot water in the hot water storage tank 2 is respectively connected with a hot water channel of the refrigerator 3 and a shell pass of the carbon dioxide heater 4 through pipelines and is used as a heat source of the hot water, and the water subjected to heat exchange and temperature reduction is connected and returned to a cold water return port of the solar water heater 1 through a pipeline; in the refrigerator 3, a low-temperature working medium can be obtained through hot water driving, the low-temperature working medium is connected with the tube pass of the flue gas cooler 6 through a pipeline, and after the task of cooling the flue gas of the shell pass of the flue gas cooler 6 to the low temperature required by the adsorption of the solid adsorbent is finished, the flue gas is connected and returned to the working medium channel inlet of the refrigerator 3 through the pipeline; the tube pass inlet of the carbon dioxide heater 4 is normal temperature carbon dioxide gas from a carbon dioxide pipeline 35, and after being heated to the high temperature required by desorption of the solid adsorbent by hot water of the shell pass, the normal temperature carbon dioxide gas is connected and sent to the first temperature-changing adsorber 7 and the second temperature-changing adsorber 8 through a pipeline, a fifth valve 17, a first valve 13 or a sixth valve 18 and a second valve 14 and is used for driving the high temperature regeneration of the solid adsorbent in the first temperature-changing adsorber 7 and the second temperature-changing adsorber 8; the shell side inlet of the winding heat exchanger 5 is normal temperature flue gas from a flue gas pipeline 36, after being preliminarily cooled by low temperature tail gas of which the tube side is from the first temperature swing adsorber 7 and the second temperature swing adsorber 8 and which has finished carbon dioxide removal, the normal temperature flue gas is connected with a flue gas cooler 6 through a pipeline, after being further cooled in the flue gas cooler 6, the low temperature flue gas is connected to the first temperature swing adsorber 7 and the first temperature swing adsorber 8 through a pipeline, a third valve 15, a seventh valve 19 or a fourth valve 16 and a valve 21, and the low temperature flue gas can drive solid adsorbents in the first temperature swing adsorber 7 and the second temperature swing adsorber 8 to finish low temperature adsorption of carbon dioxide.
When the solid adsorbent adsorbs carbon dioxide at low temperature, low-temperature flue gas from the shell pass outlet of the flue gas cooler 6 is connected through a pipeline, and enters the first temperature-changing adsorber 7 after sequentially passing through the third valve 15, the low-temperature adsorption of the flue gas carbon dioxide is completed in the low-temperature adsorber, tail gas after the carbon dioxide is removed is connected through a pipeline, and is sequentially connected with the tube pass of the winding heat exchanger 5 and the tail gas pipeline 35 through a seventh valve 19 and is sent out of a boundary area, and in the process, the first valve 13, the fourth valve 16, the fifth valve 17 and the valve 21 are in a closed state; when the solid adsorbent desorbs carbon dioxide at high temperature, high-temperature carbon dioxide gas from the tube pass outlet of the carbon dioxide heater 4 is connected through a pipeline and enters the second temperature-changing adsorber 8 after sequentially passing through the sixth valve 18, the high-temperature desorption of the carbon dioxide adsorbed by the solid adsorbent is completed in the second temperature-changing adsorber, the desorbed carbon dioxide and the carbon dioxide gas introduced as a heat carrier are connected through the pipeline and are connected with the carbon dioxide pipeline 36 through the second valve 14 and are sent out of a boundary area, and in the process, the first valve 13, the fourth valve 16, the fifth valve 17 and the valve 21 are in a closed state.
When the solid adsorbent in the first temperature swing adsorber 7 is saturated with carbon dioxide, opening the first valve 13 and the fifth valve 17, and closing the second valve 14, the fourth valve 16, the sixth valve 18 and the seventh valve 19, so that the first temperature swing adsorber 7 is in a regeneration mode; at the same time, the fourth valve 16, the valve 21 are opened, and the second valve 14, the third valve 15, the sixth valve 18, and the seventh valve 19 are closed, so that the second temperature swing adsorber 8, which has completed thermal regeneration, is in the adsorption mode. The switching operation of the first temperature swing adsorbers 7 and 8 is repeated in this way, so that the continuous operation of the process is realized.
The size and specification of the solar water heater 1 are 2.4 times of the normal demand, and the volume of the hot water storage tank 2 can meet the usage storage of 14 hours, so that the solar water heater 1 can obtain enough hot water in the sunshine period, the hot water storage tank 2 can be filled with the hot water in addition to meeting the consumption of normal operation of a daytime device, and the hot water storage amount of the hot water storage tank 2 can completely meet the energy required by normal, continuous and stable operation of the carbon dioxide capture device in night or non-daily time.
Through the analysis, the temperature swing adsorption device for capturing the flue gas carbon dioxide for the power plant is ingenious in design, the high integration of the capture process of the carbon dioxide and the utilization of renewable energy sources is realized, the temperature swing adsorption device has the characteristics of small total occupied area, reduction of engineering investment, simplicity in operation, large load adjustment elasticity, safety, reliability and the like, meanwhile, the emission reduction task can be realized by utilizing clean energy sources, the economical efficiency of capturing the flue gas carbon dioxide of the power plant is greatly improved, the temperature swing adsorption device can be applied to engineering, and a new optimized solution structure is provided for the technical fields of flue gas purification of coal-fired power plants and emission reduction devices of greenhouse gases.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (9)
1. A temperature swing adsorption device for capturing flue gas carbon dioxide for a power plant is characterized by comprising a solar water heater (1), a hot water storage tank (2), a refrigerator (3), a winding heat exchanger (5), a carbon dioxide heater (4), a flue gas cooler (6), a first temperature swing adsorber (7) and a second temperature swing adsorber (8),
a hot water outlet of the solar water heater (1) is connected with an inlet of a hot water storage tank (2), an outlet of the hot water storage tank (2) is respectively connected with a hot water channel inlet of a refrigerator (3) and a shell pass inlet of a carbon dioxide heater (4), an outlet of a hot water channel of the refrigerator (3) is connected with a cold water return port of the solar water heater (1) through a pipeline, and a shell pass outlet of the carbon dioxide heater (4) is connected with a cold water return port of the solar water heater (1) through a pipeline;
and a working medium outlet of the refrigerator (3) is sequentially connected with a tube pass of the flue gas cooler (6) and a working medium channel inlet of the refrigerator (3) through pipelines.
2. The temperature swing adsorption device for capturing carbon dioxide from flue gas used in power plants according to claim 1, further comprising a wound heat exchanger (5), wherein a flue gas pipeline (34) is connected to a shell side inlet of the wound heat exchanger (5), a shell side outlet of the wound heat exchanger (5) is connected to a shell side inlet of a flue gas cooler (6), a pipeline of the shell side outlet of the flue gas cooler (6) is divided into two branches which are respectively connected to a bottom communication port of the first temperature swing adsorber (7) and a bottom communication port of the second temperature swing adsorber (8), a third valve (15) is arranged on the branch where the first temperature swing adsorber (7) is located, and a fourth valve (16) is arranged on the branch where the second temperature swing adsorber (8) is located;
a top communicating port of the first variable-temperature adsorber (7) and a top communicating port of the second variable-temperature adsorber (8) are intersected into a pipeline through a branch, the pipeline is connected with a tail gas channel of the winding heat exchanger (5), the tail gas channel of the winding heat exchanger (5) is connected with a tail gas pipeline (35), a seventh valve (19) is arranged on the branch where the top communicating port of the first variable-temperature adsorber (7) is located, and a valve (21) is arranged on the branch where the top communicating port of the second variable-temperature adsorber (8) is located;
a carbon dioxide pipeline (36) is connected to a pipe pass inlet of the carbon dioxide heater (4), a pipeline is connected to the other side of the pipe pass of the carbon dioxide heater (4), the pipeline is divided into two bypasses, one bypass is connected with a branch on a communicating port at the top of the first temperature-changing adsorber (7) through a fifth valve (17), and the other bypass is connected with a branch on a communicating port at the top of the second temperature-changing adsorber (8) through a sixth valve (18);
the carbon dioxide pipeline (36) is also connected with a pipeline, the pipeline is divided into two bypasses, one bypass is connected with a branch on a bottom communicating port of the first temperature-changing adsorber (7) through a first valve (13), and the other bypass is connected with a branch on a bottom communicating port of the second temperature-changing adsorber (8) through a second valve (14).
3. The adsorption method of the temperature swing adsorption unit for flue gas carbon dioxide capture for power plants according to claim 2, characterized by comprising the steps of:
(1) the solar water heater (1) heats water by utilizing sunlight, and the hot water is stored in the hot water storage tank (2);
(2) hot water in the hot water storage tank (2) flows into a hot water channel of the refrigerator (3) and a shell pass of the carbon dioxide heater (4) through pipelines respectively, hot water in the hot water channel of the refrigerator (3) is used for driving to obtain a low-temperature working medium, the low-temperature working medium enters a tube pass of the flue gas cooler (6), flue gas in the shell pass is cooled to a temperature required by adsorption of a solid adsorbent, and then the low-temperature working medium after heat exchange returns to a working medium channel inlet of the refrigerator (3);
(3) a pipe pass inlet of the carbon dioxide heater (4) enters carbon dioxide gas through a carbon dioxide pipeline (35), the carbon dioxide gas is heated to a temperature required by desorption of a solid adsorbent by hot water in a shell pass of the carbon dioxide heater (4), then the heated carbon dioxide gas enters the first temperature-changing adsorber (7) through a pipeline where a fifth valve (17) is located or enters the second temperature-changing adsorber (8) through a pipeline where a sixth valve (18) is located, and the heated carbon dioxide gas is used for desorbing the solid adsorbents in the first temperature-changing adsorber (7) and the second temperature-changing adsorber (8);
normal temperature flue gas enters a shell pass inlet of a winding heat exchanger (5) through a flue gas pipeline (36), desorbed gas in a first temperature swing adsorber (7) and a second temperature swing adsorber (8) respectively enters a tube pass of the winding heat exchanger (5) through pipelines where a seventh valve (19) and a valve (21) are located, the temperature of the flue gas of the shell pass of the winding heat exchanger (5) is reduced, the cooled flue gas enters a flue gas cooler (6) for cooling, then the flue gas enters a pipeline where a third valve (15) or a fourth valve (16) is located for temperature swing adsorption in the step (3) without desorption, and the cooled flue gas is used for enabling a solid adsorbent in the temperature swing adsorber to complete adsorption of carbon dioxide.
4. The adsorption method of the temperature swing adsorption device for capturing carbon dioxide in flue gas of power plant according to claim 3, characterized in that in the step (2), the hot water channel of the refrigerator (3) and the hot water in the shell pass of the carbon dioxide heater (4) are subjected to heat exchange and then enter the solar water heater (1) again.
5. The adsorption method of the temperature swing adsorption device for capturing carbon dioxide from flue gas of a power plant according to claim 3, characterized in that in the step (3), the gas obtained by cooling the flue gas wound around the shell side of the heat exchanger (5) in the tube side of the heat exchanger (5) enters the tail gas pipeline (35) and is discharged.
6. The adsorption method of the temperature swing adsorption device for capturing carbon dioxide in flue gas of a power plant according to claim 3, characterized in that when the solid adsorbent adsorbs carbon dioxide at low temperature, flue gas from the shell side outlet of the flue gas cooler (6) passes through the pipeline and the third valve (15), enters the first temperature swing adsorber (7), completes adsorption of carbon dioxide in the flue gas in the first temperature swing adsorber (7), and after carbon dioxide is removed, the obtained tail gas passes through the pipeline and the seventh valve (19), and then sequentially enters the pipe side of the wound heat exchanger (5) and the tail gas pipeline (35) to be discharged;
in the above process, the first valve (13), the fourth valve (16), the fifth valve (17) and the valve (21) are all in a closed state.
7. The adsorption method of the temperature swing adsorption device for capturing carbon dioxide from flue gas of power plant according to claim 6, characterized in that when the solid adsorbent desorbs carbon dioxide, the heated carbon dioxide on the tube side of the carbon dioxide heater (4) enters the second temperature swing adsorber (8) through the pipeline and the sixth valve (18), the desorption of the carbon dioxide adsorbed by the solid adsorbent is completed in the second temperature swing adsorber (8), and the desorbed carbon dioxide and the carbon dioxide introduced as heat carrier pass through the pipeline and the second valve (14), enter the carbon dioxide pipeline (36), and are discharged;
in the above process, the first valve (13), the fourth valve (16), the fifth valve (17), and the valve (21) are all in a closed state.
8. The adsorption method of the temperature swing adsorption device for capturing carbon dioxide in flue gas of a power plant according to claim 6, characterized in that after the solid adsorbent in the first temperature swing adsorber (7) is saturated with carbon dioxide, the first valve (13) and the fifth valve (17) are opened, the second valve (14), the fourth valve (16), the sixth valve (18) and the seventh valve (19) are closed, and the solid adsorbent in the first temperature swing adsorber (7) is in a desorption state; meanwhile, the fourth valve (16) and the valve (21) are opened, the second valve (14), the third valve (15), the sixth valve (18) and the seventh valve (19) are closed, and the solid adsorbent in the second temperature-changing adsorber (8) is in an adsorption state.
9. The adsorption method of the temperature swing adsorption device for capturing carbon dioxide in flue gas of a power plant according to claim 8, characterized in that the first temperature swing adsorber (7) and the second temperature swing adsorber (8) are alternately in desorption and absorption states by operating a valve, thereby realizing continuous desorption and absorption operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101488.1A CN114471078A (en) | 2022-01-27 | 2022-01-27 | Temperature swing adsorption device and method for capturing carbon dioxide in flue gas for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210101488.1A CN114471078A (en) | 2022-01-27 | 2022-01-27 | Temperature swing adsorption device and method for capturing carbon dioxide in flue gas for power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114471078A true CN114471078A (en) | 2022-05-13 |
Family
ID=81477206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210101488.1A Pending CN114471078A (en) | 2022-01-27 | 2022-01-27 | Temperature swing adsorption device and method for capturing carbon dioxide in flue gas for power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114471078A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115318061A (en) * | 2022-09-07 | 2022-11-11 | 西安热工研究院有限公司 | Direct air carbon capture system and method for updraft tower |
| CN115364615A (en) * | 2022-08-25 | 2022-11-22 | 北京航天试验技术研究所 | Mars surface carbon dioxide capture system and method adopting temperature swing adsorption method |
| CN115554804A (en) * | 2022-09-28 | 2023-01-03 | 诸暨正鑫管业有限公司 | Air conditioning system of pipeline production workshop |
| CN116459623A (en) * | 2023-04-18 | 2023-07-21 | 上海交通大学 | Carbon capture circulation system and method for recycling internal cooling and regenerative graded desorption of dry air |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721878A (en) * | 2010-01-18 | 2010-06-09 | 哈尔滨工业大学 | Method and system for capturing CO2 by temperature-lowering absorption and low-voltage desorption |
| US20100242728A1 (en) * | 2007-05-23 | 2010-09-30 | University Of Wyoming | Carbon-rich sorbent filters |
| CN106582201A (en) * | 2017-01-25 | 2017-04-26 | 天津大学 | Carbon dioxide capturing compression system using flue gas and multistage compressing waste heat |
| CN109453652A (en) * | 2018-12-07 | 2019-03-12 | 铜陵泰富特种材料有限公司 | The desulfurization denitration method of boiler smoke |
| CN109844273A (en) * | 2016-10-05 | 2019-06-04 | 奥迪股份公司 | Method and apparatus for exhaust gas purification |
| CN110302632A (en) * | 2019-06-14 | 2019-10-08 | 北京科技大学 | A kind of raw material gas purifying system and technique |
| JP2021159816A (en) * | 2020-03-31 | 2021-10-11 | 東邦瓦斯株式会社 | Carbon dioxide separation/collection system |
| CN214914691U (en) * | 2021-06-09 | 2021-11-30 | 势加透博（上海）能源科技有限公司 | Carbon dioxide capture system |
| CN215352822U (en) * | 2021-07-28 | 2021-12-31 | 上海工程技术大学 | Environment-friendly device for recovering oil gas by using solar energy |
-
2022
- 2022-01-27 CN CN202210101488.1A patent/CN114471078A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100242728A1 (en) * | 2007-05-23 | 2010-09-30 | University Of Wyoming | Carbon-rich sorbent filters |
| CN101721878A (en) * | 2010-01-18 | 2010-06-09 | 哈尔滨工业大学 | Method and system for capturing CO2 by temperature-lowering absorption and low-voltage desorption |
| CN109844273A (en) * | 2016-10-05 | 2019-06-04 | 奥迪股份公司 | Method and apparatus for exhaust gas purification |
| CN106582201A (en) * | 2017-01-25 | 2017-04-26 | 天津大学 | Carbon dioxide capturing compression system using flue gas and multistage compressing waste heat |
| CN109453652A (en) * | 2018-12-07 | 2019-03-12 | 铜陵泰富特种材料有限公司 | The desulfurization denitration method of boiler smoke |
| CN110302632A (en) * | 2019-06-14 | 2019-10-08 | 北京科技大学 | A kind of raw material gas purifying system and technique |
| JP2021159816A (en) * | 2020-03-31 | 2021-10-11 | 東邦瓦斯株式会社 | Carbon dioxide separation/collection system |
| CN214914691U (en) * | 2021-06-09 | 2021-11-30 | 势加透博（上海）能源科技有限公司 | Carbon dioxide capture system |
| CN215352822U (en) * | 2021-07-28 | 2021-12-31 | 上海工程技术大学 | Environment-friendly device for recovering oil gas by using solar energy |
Non-Patent Citations (1)
| Title |
|---|
| 全国勘察设计注册工程师环保专业管理委员会，中国环境保护产业协会编: "《注册环保工程师专业考试复习教材 大气污染防治工程技术与实践 上 第4版》", 31 March 2017, 中国环境出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364615A (en) * | 2022-08-25 | 2022-11-22 | 北京航天试验技术研究所 | Mars surface carbon dioxide capture system and method adopting temperature swing adsorption method |
| CN115364615B (en) * | 2022-08-25 | 2024-02-09 | 北京航天试验技术研究所 | Mars surface carbon dioxide capturing system and method adopting temperature swing adsorption method |
| CN115318061A (en) * | 2022-09-07 | 2022-11-11 | 西安热工研究院有限公司 | Direct air carbon capture system and method for updraft tower |
| CN115318061B (en) * | 2022-09-07 | 2024-04-30 | 西安热工研究院有限公司 | System and method for directly capturing air carbon by ascending air flow tower |
| CN115554804A (en) * | 2022-09-28 | 2023-01-03 | 诸暨正鑫管业有限公司 | Air conditioning system of pipeline production workshop |
| CN116459623A (en) * | 2023-04-18 | 2023-07-21 | 上海交通大学 | Carbon capture circulation system and method for recycling internal cooling and regenerative graded desorption of dry air |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114471078A (en) | Temperature swing adsorption device and method for capturing carbon dioxide in flue gas for power plant | |
| CN107741103B (en) | Ammonia water absorption type refrigeration combined carbon trapping device | |
| CN215196186U (en) | Solar flash evaporation desorption carbon capture system integrated with liquid storage system | |
| CN203049680U (en) | Adsorption air water-taking device utilizing phase-change materials | |
| CN105435581A (en) | Solar photovoltaic driven PSA (pressure swing adsorption) air carbon capture system and control method | |
| CN106582200B (en) | Temperature swing adsorption power plant flue gas carbon capture system utilizing middle extraction | |
| CN108641765A (en) | Remove the process system and method for carbon dioxide in natural | |
| CN114522509B (en) | Carbon dioxide trapping and adsorbing system and method based on solar drive and energy storage | |
| CN105032113A (en) | Process for capturing carbon dioxide in flue gas based on wet reclamation technology | |
| CN101822929A (en) | Method for capturing carbon dioxide by utilizing electrical desorption technology | |
| CN114345079B (en) | Temperature and pressure swing adsorption device and method for capturing carbon dioxide in flue gas | |
| CN216825546U (en) | Carbon dioxide capture adsorption system based on solar drive and energy storage | |
| CN216986975U (en) | Temperature and pressure swing adsorption device for capturing carbon dioxide in flue gas | |
| CN208829616U (en) | Remove the process system of carbon dioxide in natural | |
| CN217795387U (en) | Low-energy-consumption carbon trapping device | |
| CN204347000U (en) | Variable working condition thick slurry type carbon dioxide capture process testing device | |
| CN108273354A (en) | A kind of VOC gas absorber two level heat returns to level-one energy conserving system and method | |
| CN216303278U (en) | Direct liquefaction capture system of carbon dioxide under supercritical pressure | |
| CN105258141A (en) | System for indirectly driving CO2 removal through thermal power by means of independent solar energy phase-change stepped heat storage | |
| CN105561742B (en) | A kind of solar energy and geothermal energy united auxiliary carbon dioxide trapping system | |
| CN105251316B (en) | The direct thermodynamic-driven of independent solar utilizes mixed working fluid removing CO2System | |
| CN115138181A (en) | Energy-saving and water-saving carbon capture device and method | |
| CN211595551U (en) | Natural gas decarbonization system | |
| CN202569896U (en) | Molecular sieve purifying system | |
| CN102580466B (en) | Flue gas decarbonization system and flue gas decarbonization method for two-step regeneration of carbon dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220513 |
|
| RJ01 | Rejection of invention patent application after publication |