CN117180977A - Solid amine desorption device and solid amine carbon trapping system - Google Patents
Solid amine desorption device and solid amine carbon trapping system Download PDFInfo
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- CN117180977A CN117180977A CN202311400279.8A CN202311400279A CN117180977A CN 117180977 A CN117180977 A CN 117180977A CN 202311400279 A CN202311400279 A CN 202311400279A CN 117180977 A CN117180977 A CN 117180977A
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- 239000007787 solid Substances 0.000 title claims abstract description 140
- 150000001412 amines Chemical class 0.000 title claims abstract description 130
- 238000003795 desorption Methods 0.000 title claims abstract description 90
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 69
- 239000002245 particle Substances 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims description 78
- 230000005587 bubbling Effects 0.000 claims description 60
- 239000007789 gas Substances 0.000 claims description 56
- 238000001179 sorption measurement Methods 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 22
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 9
- 239000001569 carbon dioxide Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
In order to solve the problems in the prior art, the invention provides a solid amine desorption device and a solid amine carbon capture system, comprising: a first housing, a second housing, a heating assembly, a steam generating unit, and a vacuum pump; wherein the second shell is coaxially and rotatably arranged in the first shell and is used for receiving solid amine particles to be desorbed; the heating component is communicated with the heating spaces of the first shell and the second shell and is used for heating the solid amine particles to be desorbed so as to cause desorption; according to the solid amine desorption device, the second shell is coaxially and rotatably arranged in the first shell, and the flow guide pieces are uniformly distributed on the outer side of the second shell along the axial direction of the second shell; the flow guiding piece improves the airflow speed of the heating space, can quickly change the temperature in the second shell and improves the desorption efficiency of the solid amine.
Description
Technical Field
The invention belongs to the field of carbon dioxide capture, and particularly relates to a solid amine desorption device and a solid amine carbon capture system capable of reducing energy consumption.
Background
Solid amine sorbents as an emerging CO 2 The trapping material has the advantages of weak corrosion to equipment, simple operation, low regeneration energy consumption and the like, and becomes the current CO, and the trapping material can improve the uniformity of amino dispersion, increase the contact area of amino and gas, overcome the defects of easy corrosion to equipment and the like of an amine solvent and the like by carrying out amino modification on the porous material, and has the large specific surface area of the porous material 2 One of the research hotspots in the field of trapping.
Currently, solid amine CO 2 The trapping technology is mainly divided into a fixed bed and a fluidized bed, and the fluidized bed has the advantages of easy scale, complex technology, more transmission equipment and rotation equipment, difficult sealing, easy realization of good sealing of the fixed bed, lower vacuum realization and convenient vacuum desorption;
in the conventional solid amine desorption apparatuses, a stationary desorption apparatus is often used, and CO is carried out by bubbling or the like on solid amine particles in the desorption apparatus 2 Is adsorbed by the adsorption column; however, in specific use, due to the different solid amine particles and the problems of agglomeration, crushing and the like, the air flow control during bubbling is difficult to achieve accurately, and the desorption effect is not ideal; in order to improve the desorption effect, the desorption duration or the desorption path is generally improved, so that the desorption energy consumption is high;
based on this, a desorption apparatus capable of effectively improving the reaction efficiency and reducing the energy consumption of the reaction is urgently required to be developed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a solid amine desorption device and a solid amine carbon capture system.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a solid amine desorption apparatus comprising:
a first housing;
a second housing coaxially rotatably disposed within the first housing for receiving solid amine particles to be desorbed;
a heating assembly, which is communicated with the heating spaces of the first shell and the second shell, and is used for heating the solid amine particles to be desorbed so as to generate desorption;
the second housing includes:
a second housing body;
at least 2 water conservancy diversion pieces, along the axial equipartition of second casing body is in the outside of second casing body for with heating element matches and sets up, in order to adjust the air current speed in heating space.
The guide piece is in a flat plate shape;
the height of one end of the flow guide piece far away from the heating component is smaller than that of one end of the flow guide piece close to the heating component.
The flow guiding piece is in a curve shape, and the rotation direction of the flow guiding piece is consistent with the rotation direction of the second shell.
The heating assembly comprises:
a heat source;
and one end of the air inlet mechanism is connected with the heat source, and the other end of the air inlet mechanism is connected with the heating space and is used for adjusting the air inlet quantity of the air inlet mechanism according to the temperature in the second shell and adjusting the flow of the heating space under the combined action of the air inlet mechanism and the flow guiding piece.
The air inlet mechanism includes:
a ring member disposed at an end of the first housing;
at least 1 partition plate provided inside the ring member for dividing an annular space of the ring member into at least 2 intake passages;
at least 1 pipe member having one end communicating with the intake passage and the other end connected with the heat source for communicating the heat source with the heating space through the intake passage;
the switch group is arranged in the pipe fitting and used for controlling the on-off of any pipe fitting according to the temperature in the second shell.
The second housing further includes: at least 3L-shaped plates;
the L-shaped plates are uniformly distributed in the second shell body and are used for stirring the solid amine to be desorbed;
at least 1 bulge facing the direction of the inner side wall of the second shell body is arranged on the long side of the L-shaped plate;
the included angle between the long side of the L-shaped plate and the short side of the L-shaped plate gradually becomes smaller along with the movement direction of the solid amine particles to be desorbed.
The solid amine desorption device further comprises: a vacuum pump;
the vacuum pump is arranged at the output end of the second shell and is used for providing a vacuum state after the temperature in the second shell reaches the desorption temperature.
The solid amine desorption device further comprises: a steam generation unit;
the steam generating unit is connected with the inside of the second shell and is used for inputting steam into the inside of the second shell so as to increase the desorption efficiency of the solid amine
A solid amine carbon capture system comprising:
the adsorption component is used for adsorbing carbon dioxide in the flue gas through solid amine to obtain solid amine for adsorbing carbon dioxide;
the solid amine desorption device is connected with the material output end of the adsorption component and is used for desorbing the solid amine adsorbing carbon dioxide;
the gas collection assembly is connected with the gas output end of the adsorption assembly and is used for outputting the gas after carbon capture;
the data acquisition component is respectively arranged at the input end of the adsorption component, the output end of the solid amine desorption device and the output end of the adsorption component and is used for acquiring flow data and gas component data;
and the control unit is electrically connected with the data acquisition component and is used for adjusting the feeding amount and/or the heating amount of the solid amine desorption device according to the flow data and the gas component data.
The adsorption assembly comprises:
a first stage bubbling mechanism for receiving the solid per-particle;
a second-stage bubbling mechanism connected to the first-stage bubbling mechanism for receiving the solid amine particles adsorbed by the first-stage bubbling mechanism;
a third stage sparging mechanism, coupled to the second stage sparging mechanism, for receiving solid amine particles adsorbed via the second stage sparging mechanism;
the output end of the first-stage bubbling mechanism is positioned at 2/3 of the first-stage bubbling mechanism, and the input end of the second-stage bubbling mechanism is positioned at 2/3 of the second-stage bubbling mechanism;
the output end of the second-stage bubbling mechanism is positioned at 1/2 of the second-stage bubbling mechanism, and the input end of the third-stage bubbling mechanism is positioned at 1/2 of the third-stage bubbling mechanism.
The gas collection assembly, comprising:
the input end of the cyclone separator is connected with the output end of the adsorption component and is used for separating solid amine particles;
the collector is connected with the gas output end of the cyclone separator and is used for collecting the gas output by the cyclone separator;
the induced draft fan is connected with the gas output end of the collector and is used for providing negative pressure and discharging gas;
the solid output end of the cyclone separator is connected with the input end of the solid amine desorption device;
the solid output end of the collector is connected with the input end of the solid amine desorption device.
The first shell in the solid amine desorption device is obliquely arranged;
the included angle between the axis of the first shell and the horizontal plane is 3-8 degrees, and the height of the input end is higher than that of the output end.
A solid amine carbon capture system, further comprising: a transport assembly;
the delivery assembly includes:
the input end of the horizontal conveying section is connected with the solid output end of the solid amine desorption device and is used for conveying desorbed solid amine;
the input end of the vertical conveying section is connected with the output end of the horizontal conveying section and is used for cooling the desorbed solid amine;
the output end of the vertical conveying section is connected with the input end of the adsorption component.
The beneficial effects are that:
the solid amine desorption device is characterized in that a second shell is coaxially and rotatably arranged in the first shell and is used for receiving solid amine particles to be desorbed; the heating component is communicated with the heating spaces of the first shell and the second shell and is used for heating the solid amine particles to be desorbed so as to cause desorption; in the second shell, the flow guiding pieces are uniformly distributed on the outer side of the second shell body along the axial direction of the second shell body; the flow guide piece improves the air flow speed of the heating space, can quickly change the temperature in the second shell, and improves the desorption efficiency of the solid amine;
the solid amine carbon capturing system comprises the desorption device, and simultaneously utilizes a multistage adsorption component to carry out CO (carbon monoxide) in flue gas 2 Adsorbing; and then adsorb CO 2 In the above desorption device, the adsorption effect and adsorption efficiency can be ensured through the multistage adsorption component, the working efficiency of the system is improved, and the energy loss is reduced.
Drawings
FIG. 1 is a schematic diagram of a solid amine desorption apparatus according to the present invention;
FIG. 2 is a schematic view of an embodiment of the baffle of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic view of another embodiment of the baffle of FIG. 1;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a schematic diagram of an air intake mechanism;
FIG. 7 is a schematic view of the structure of an L-shaped plate;
FIG. 8 is a schematic diagram of a solid amine carbon capture system according to the present invention;
FIG. 9 is a control block diagram in the present invention;
wherein in fig. 1-9:
1. a first housing; 2. a second housing; 3. a heating assembly; 4. a steam generation unit; 5. an adsorption assembly; 6. a gas collection assembly; 7. a data acquisition component; 8. a control unit; 9. a vacuum pump; 10. a transport assembly; 201. a second housing body; 202. an L-shaped plate; 203. a flow guide; 301. a heat source; 302. an air inlet mechanism; 303. a filter screen; 501. a first-stage bubbling mechanism; 502. a second-stage bubbling mechanism; 503. a third-stage bubbling mechanism; 601. a cyclone separator; 602. a collector; 603. an induced draft fan; 1001. a horizontal conveying section; 1002. a vertical transport section; 3021. a ring member; 3022. a partition plate; 3023. a pipe fitting; 3024. and a switch group.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Specific example I:
the present embodiment provides an embodiment:
referring to fig. 1, a solid amine desorption apparatus includes: a first housing 1, a second housing 2, a heating assembly 3, a steam generating unit 4, and a vacuum pump 9; wherein the second housing 2 is coaxially and rotatably arranged inside the first housing 1 for receiving solid amine particles to be desorbed; a heating assembly 3 is arranged in communication with the heating spaces of the first housing 1 and the second housing 2 for heating the solid amine particles to be desorbed so as to cause desorption; the length of the second shell 2 is 3.5-5.5m, and the inner diameter is 1.5-2.5m; what needs to be clarified is: a material buffer bin is shown at B in FIG. 1;
the traditional desorption device is usually fixedly arranged, and solid amine particles are blown up and heated by means of air flow and the like, so that the desorption efficiency is improved; however, when encountering defects such as breaking, caking, etc. of the solid amine, the air flow cannot be precisely controlled, and excessive consumption of energy or poor desorption effect is easily caused, and based on this, in this embodiment, the second housing 2 includes: a second housing body 201 and at least 2 flow directors 203; the flow guiding members 203 are uniformly distributed on the outer side of the second housing body 201 along the axial direction of the second housing body 201, and are configured to match the heating assembly 3, so as to adjust the airflow speed of the heating space; when in use, the second shell body 201 drives the flow guide piece 203 to rotate to form rotary air flow, so that the flow speed of the air flow is improved, and the heating efficiency is increased; meanwhile, since the solid amine particles are located inside the second housing body 201, if the agglomeration or the like occurs, the second housing body 201 is broken by the rotation, and the desorption effect is not affected.
In this example, different implementations are provided for the baffle:
alternatively, as shown in fig. 2-3, the flow guide 203 is in a flat plate shape; the height of the end, away from the heating component 3, of the flow guiding piece 203 is smaller than that of the end, close to the heating component 3, of the flow guiding piece 203; through the guide members 203 in the present embodiment, the height of the guide members 203 near one end of the heating assembly 3 is higher, at this time, the air flow forms a rotating air flow between the two guide members 203, the flow speed is faster, and the air flow rapidly enters the distal end of the heating assembly 3, at this time, the space between the guide members 203 and the first housing 1 is enlarged due to the smaller height of the guide members 203 near one end of the heating assembly 3, so as to form a larger space; when the flow guide member 203 rotates, vortex is formed between the flow guide member 203 and the first shell 1 at the far end of the heating assembly 3, so that heat is accumulated at the far end of the heating assembly 3, heating balance between the heated near end and the far end can be ensured under the condition that transmission loss exists in the heating assembly 3, and heating effect is improved;
optionally, the guide 203 is curved, as shown in fig. 4-5, preferably S-shaped, and the rotation direction of the guide 203 is consistent with the rotation direction of the second housing 2; in a specific use, the air flow in the heating space is formed into a rotating air flow by rotating the S-shaped curved guide piece 203, so that the flow speed is increased, the temperature difference between the heating near end and the heating far end of the heating component 3 is reduced, and the heating effect is improved;
since the second housing 2 is rotatable, the heating assembly 3, for cooperation therewith, comprises: a heat source 301 and an air intake mechanism 302; one end of an air inlet mechanism 302 is connected with the heat source 301, and the other end is connected with the heating space, and is used for adjusting the air inlet amount of the air inlet mechanism 302 according to the temperature in the second shell 2 and adjusting the air flow in the heating space under the combined action of the air inlet mechanism and the flow guide 203;
specifically, as shown in fig. 6, the air intake mechanism 302 includes an annular member 3021, 6 partition plates 3022, 6 pipe fittings 3023, and a switch group 3024; wherein a ring 3021 is provided at an end of the first housing 1; a partition 3022 is provided inside the ring 3021 for dividing the annular space of the ring 3021 into 6 intake passages; correspondingly, one end of the pipe 3023 is communicated with the air intake passage, and the other end is connected with the heat source 301, for communicating the heat source 301 with the heating space through the air intake passage; a switch unit 3024, such as a solenoid valve, disposed in the pipe 3023 for controlling on/off of any of the pipe 3023 according to the temperature in the second housing 2; the arrow in fig. 6 indicates the intake direction of the heat source 301;
preferably, the number of the partition boards 3022 is the same as that of the flow guiding members 203, for example, 6 flow guiding members 203 divide the heating space into 6 spaces, and 6 partition boards 3022 divide the air inlet space into 6 spaces, and in the initial state, the air inlet space formed by two adjacent partition boards 3022 corresponds to the divided spaces of two adjacent flow guiding members 203 one by one to form an air flow passage; and after the second housing 2 rotates, the switch group 3024 controls the on-off of the tube 2023; preferably, the output of the heat source 301 enters in a countercurrent mode with the solid amine, so that the heat at the tail end of the heating wind can be used for preheating the solid amine, and the front section and the middle section wind with higher temperature can be used for heating the solid amine, so that the utilization rate is improved;
correspondingly, an air outlet consistent with the air inlet mechanism 302 is arranged at the outlet end of the second shell 2; preferably, the air outlet does not limit the air outlet flow, and a filter screen 303 is preferably arranged at the air outlet end of the air outlet for filtering.
In specific use, the desorption temperature of the solid amine in the second shell 2 is 90-110 ℃, and the temperature of the heating component 3 entering the annular piece 3021 is 120-130 ℃ at the wind speed of 5m/s; when the temperature in the second shell 2 is lower than 90 ℃, the heat source temperature is increased to 140-150 ℃, all switch groups 3024 are opened, the hot air circulation speed is increased by utilizing the action of the guide plate 203 so as to enhance heat exchange, the temperature in the second shell 2 is monitored, the temperature is increased to 100 ℃, and the air quantity and the temperature are maintained; when the temperature of the solid amine in the second housing 2 is higher than 110 ℃, on the one hand, the temperature of the heating assembly 3 entering the annular member 3021 is reduced by 90-110 ℃, and meanwhile, the partial switch group 3024 is closed, such as by interval closing, at the same time, even if the wind speed is kept unchanged, the heating temperature of the second housing 2 starts to be reduced due to the reduction of the heat source flow, so that the desorption temperature is adjusted; preferably, the temperature measuring point arranged in the second shell 2 is arranged on the inner side wall of the second shell 2 and is 150mm higher than the metal wall surface, so that the temperature in the second shell 2 can be truly measured.
In order to increase the desorption efficiency of the solid amine, the second housing 2 further comprises: at least 3L-shaped plates 202, as shown in fig. 7; the L-shaped plates 202 are uniformly distributed in the second shell body 201 and are used for stirring the solid amine to be desorbed; at least 1 protrusion facing the direction of the inner side wall of the second housing body 201 is provided on the long side of the L-shaped plate 202; the included angle between the long side of the L-shaped plate 202 and the short side of the L-shaped plate 202 gradually becomes smaller along with the movement direction of the solid amine particles to be desorbed;
preferably, each plate of the L-shaped plate 202 is 300mm long and 200mm wide, and is disposed at intervals of 500mm in the circumferential direction and 250mm in the axial direction of the second housing 2; 16 triangular pyramids are uniformly distributed on each L-shaped plate 202, so that the heat exchange area is further increased, and the flow of solid amine particles is more uniform; dividing the length of the second shell 2 into 3 sections equally, forming an included angle of 25 degrees between the long side of the front section L-shaped plate 202 close to the heat source 301 and the horizontal direction, forming an included angle of 10 degrees between the long side of the middle section and the horizontal direction, forming an included angle of 5 degrees between the long side of the tail section and the horizontal direction, and finally, not arranging the L-shaped plate 202 in the 1m section for facilitating discharging; by the arrangement, the stirring effect of the solid amine material can be enhanced in the initial stage of the reaction, the material is easier to turn over, the solid amine material can be heated quickly, and the agglomerated solid amine is crushed; the L-shaped plate 202 can ensure the flowing time of the solid amine in the second shell 2, can increase the heat exchange area, improves the heat transfer effect, is beneficial to the flowing of the solid amine material, and can not cause all the material to be accumulated at the bottom of the second shell 2; meanwhile, as the L-shaped plate 202 rotates along with the second shell 2, a spiral airflow is formed in the second shell 2 from the front section to the tail end, the flowing direction of the spiral airflow is consistent with the direction of the spiral airflow formed by the flow guide piece 203 outside the second shell 2, and the spiral airflow enters in a countercurrent mode, in the rotating process, the solid amine material is heated and desorbed in the process from the head to the tail, and flows out through the tail discharge opening, so that the pyrolysis efficiency of the solid amine is further improved; the heating time of the embodiment and the equipment without the L-shaped plate 202 can be shortened by more than 45 percent;
the vacuum pump 9 is disposed at an output end of the second housing 2, and is configured to provide a vacuum state after the temperature in the second housing 2 reaches the desorption temperature, so as to implement vacuum desorption.
Also, in the present embodiment, the steam generating unit 4 is connected to the inside of the second housing 2, for inputting steam into the inside of the second housing 2, so as to increase the desorption efficiency of the solid amine; because in the embodiment, a large amount of energy can be saved by the arrangement of the rotating second housing 2, the L-shaped plate 202 and the flow guide member 203, the complete desorption time of the fixed bed is 3.5-4.5h under the condition of the same amount of solid amine and the same equipment volume, such as single desorption of 1-2t, while the single desorption time of the desorption device in the embodiment only needs 45min;
meanwhile, the desorption device in this embodiment can also receive energy sources on the basis of improving desorption time, and refer to the following table: the data of the table are collected into a workshop of a certain factory in a certain market, and on the premise of the same volume and desorption materials;
table I: comprehensive energy consumption comparison table of the existing fluidized bed and the desorption apparatus described in this example:
therefore, under the same condition, compared with the existing fluidized bed, the desorption device in the embodiment slightly increases the electric energy consumption by about 10%, can save tens of times of steam under the condition, greatly saves the energy consumption, and further improves the desorption efficiency.
The invention also provides an embodiment:
referring to fig. 8, a solid amine carbon capture system comprising: an adsorption module 5, a solid-state amine desorption device as described in embodiment I, a gas collection module 6, a data acquisition module 7, a control unit 8, and a transport module 10; the adsorption component 5 is used for adsorbing carbon dioxide in the flue gas through solid amine to obtain solid amine for adsorbing carbon dioxide; the solid amine desorption device is connected with the material output end of the adsorption component 5 and is used for desorbing the solid amine adsorbing carbon dioxide; the gas collection assembly 6 is connected with the gas output end of the adsorption assembly 5 and is used for outputting the gas after carbon capture; the data acquisition component 7 is respectively arranged at the input end of the adsorption component 5, the output end of the solid amine desorption device and the output end of the adsorption component 5 and is used for acquiring flow data and gas component data; the control unit 8 is electrically connected with the data acquisition component 7 and is used for adjusting the feeding amount and/or the heating amount of the solid amine desorption device according to the flow data and the gas component data; in fig. 8, the dotted line is a gas passage, and the solid line is a material flow direction; the part B is a material buffer bin;
specifically, the adsorption assembly 5 includes: a first-stage bubbling mechanism 501, a second-stage bubbling mechanism 502, and a third-stage bubbling mechanism 503; wherein the first stage bubbling mechanism 501 is configured to receive the solid per-particle; a second stage bubbling mechanism 502 is connected to the first stage bubbling mechanism 501 for receiving solid amine particles adsorbed via the first stage bubbling mechanism 501; a tertiary bubbling mechanism 503 is connected to the secondary bubbling mechanism 502 for receiving solid amine particles adsorbed via the secondary bubbling mechanism 502; the output end of the first stage bubbling mechanism 501 is located at 2/3 of the first stage bubbling mechanism 501, and the input end of the second stage bubbling mechanism 502 is located at 2/3 of the second stage bubbling mechanism 502; the output of the second stage bubbling mechanism 502 is located at 1/2 of the second stage bubbling mechanism 502, and the input of the third stage bubbling mechanism 503 is located at 1/2 of the third stage bubbling mechanism 503.
When in use, contains CO 2 The flue gas flows in from the bottom of the first-stage bubbling mechanism 501, and CO is adsorbed by controlling the gas quantity 2 Forming a bubbling fluidized state with the solid amine particles or powder of (a) CO 2 Adsorption can be realized at normal temperature, the adsorption reaction can emit heat, the fluidized gas can take away redundant heat, so that the adsorption reaction is facilitated, the height of the bed material of each stage of bed is limited, the excessive bed material can cause poor heat dissipation, the power consumption of a fan 11 is increased, a discharge port is arranged at 2/3 of a first stage bubbling mechanism 501 and is connected with a feed port of a second stage bubbling mechanism 502, the first stage bubbling mechanism 501 can flow into the second stage bubbling mechanism 502 at a certain wind speed, the discharge port is arranged at 1/2 of the second stage bubbling mechanism 502, and part of CO in flue gas at the outlet of the first stage bubbling mechanism 501 is still remained 2 Not adsorbed, the outlet flue gas is introduced into the air inlet at the bottom of the second-stage bubbling mechanism 502 to fluidize the solid amine material in the bed and adsorb CO 2 The solid amine particles and the flue gas enter a third-stage bubbling mechanism 503 to remove the residual CO in the flue gas 2 All are adsorbed. The adsorption capacity of each level of bubbling mechanism is 50%,30%,20%, the height of the static bed material is 1.5-2 m, the particle size of the solid amine material is 0.1-1.5 mm, the flow rate of flue gas at each level is 0.5-1.5 m/s, and the flow rate is gradually reduced. The full adsorption is realized through the multistage bubbling bed, the wind pressure and the wind quantity of the fan 11 are reduced, the power consumption of the fan is reduced, and the power consumption is reduced by about 30 percent compared with the same type of fast fluidized bed or single-stage bed.
The gas collection assembly 6 comprises: cyclone 601, collector 602 and induced draft fan 603; wherein the input end of the cyclone separator 601 is connected with the output end of the adsorption assembly 5 and is used for separating solid amine particles; the collector 602 is connected with the gas output end of the cyclone 601 and is used for collecting the gas output by the cyclone 601; the induced draft fan 603 is connected with the gas output end of the collector 602, and is used for providing negative pressure and exhausting gas; the solid output end of the cyclone 601 is connected with the input end of the solid amine desorption device; the solid output of the collector 602 is connected to the input of the solid amine desorption device.
The first shell 1 in the solid amine desorption device is obliquely arranged; the included angle between the axis of the first housing 1 and the horizontal plane is 3-8 degrees, preferably 5 degrees, and the height of the input end is higher than that of the output end.
The delivery assembly 10 includes: a horizontal conveying section 1001 and a vertical conveying section 1002; the input end of the horizontal conveying section 1001 is connected with the solid output end of the solid amine desorption device and is used for conveying desorbed solid amine; an input end of a vertical conveying section 1002 is connected with an output end of the horizontal conveying section 1001, and is used for cooling the desorbed solid amine; the output end of the vertical conveying section 1002 is connected with the input end of the adsorption assembly 5.
As shown in fig. 9, the data acquisition component 7 includes a plurality of detection units, such as: an inlet gas component detector C1, an inlet flowmeter H1, a final bed exhaust gas component detector C2, a final bed exhaust gas flowmeter H2, a vacuum pump inlet gas component detector C3, and a vacuum pump inlet flowmeter H3; the function of the inlet gas component detector C1 is to measure the CO of the inlet flue gas 2 The concentration and final bed exhaust gas component detector C2 is used for measuring CO of final fluidized bed outlet flue gas 2 The concentration is controlled automatically by detecting the reading difference of the inlet gas component detector C1 and the final-stage bed exhaust gas component detector C2 and the outlet reading of the final-stage bed exhaust gas component detector C2, and adjusting the fluidization wind speed and the feeding quantity; for example, the target reading of the inlet gas component detector C1 is 12%, the target reading of the final bed exhaust gas component detector C2 is 2%, the target difference between the inlet gas component detector C1 and the final bed exhaust gas component detector C2 is 10%, and when the target value is lower than the target value, it is indicated that the adsorption capacity is poor, the feeding amount needs to be increased, the air quantity needs to be appropriately increased, and the fluidization effect is improved, so that the adsorption reaction efficiency is enhanced; when the adsorption capacity is lower than the target value, the excessive adsorption capacity is indicated, the feeding amount needs to be reduced, and the air quantity is properly reduced so as to save the electricity consumption;
the vacuum pump inlet gas component detector C3 is used for detecting CO at the outlet of the desorption equipment 2 The concentration and oxygen concentration, normally 0, cannot exceed 1%, verify the collected gasAnd whether the purity meets the requirement or not, and meanwhile, whether the system has faults such as air leakage or not can be judged through detection of the oxygen concentration. CO is judged according to the calculation results of the inlet gas component detector C1, the inlet flowmeter H1, the final-stage bed exhaust gas component detector C2, the final-stage bed exhaust gas flowmeter H2, the vacuum pump inlet gas component detector C3 and the vacuum pump inlet flowmeter H3 2 Whether or not the desorption is complete; for example: taking a certain fixed time period, subtracting the product of the final bed exhaust port gas component detector C2 and the final bed exhaust port flowmeter H2 from the product of the inlet gas component detector C1 and the inlet flowmeter H1 to obtain the adsorbed CO 2 Numerical values, for example, the amount of the flow meter H3 is more than 10% in 45min, the desorption rate is 90%, namely the target value, if the desorption rate is more than 25%, the treatment capacity of desorption equipment is poor, the treatment capacity of the material needs to be improved, the heating circulating air speed is improved, the heat exchange capacity is improved, or a part of new adsorption material is replaced;
what needs to be clarified is: the adsorption module 5 in this embodiment is divided into 3 stages, and CO can be increased by using a multi-stage bubbling bed 2 The method has the advantages that the action time of the flue gas is prolonged, the energy consumption of the fan is reduced, and the number of stages can be increased or reduced if the equipment scale is required to be improved or the removal efficiency is improved, so that the large-scale application of the equipment is facilitated.
What needs to be clarified is: the control unit 8 described herein may be any programmable unit, such as a single-chip microcomputer or a PLC;
what needs to be clarified is: other undefined parts are prior art; for example, a positioning system is arranged between the first shell 1 and the second shell 2, so that feeding and discharging are facilitated.
The foregoing is merely illustrative of embodiments of the present invention, and the present invention is not limited thereto, and any person skilled in the art can easily change or replace the embodiments within the scope of the present invention. The scope of the invention is therefore defined by the appended claims.
Claims (13)
1. A solid amine desorption apparatus comprising:
a first housing;
a second housing coaxially rotatably disposed within the first housing for receiving solid amine particles to be desorbed;
a heating assembly, which is communicated with the heating space between the first shell and the second shell, and is used for heating the solid amine particles to be desorbed so as to generate desorption;
the second housing includes:
a second housing body;
at least 2 water conservancy diversion pieces, along the axial equipartition of second casing body is in the outside of second casing body for with heating element matches and sets up, in order to adjust the air current speed in heating space.
2. A solid amine desorption apparatus as claimed in claim 1, wherein:
the guide piece is in a flat plate shape;
the height of one end of the flow guide piece far away from the heating component is smaller than that of one end of the flow guide piece close to the heating component.
3. A solid amine desorption apparatus as claimed in claim 1, wherein:
the flow guiding piece is in a curve shape, and the rotation direction of the flow guiding piece is consistent with the rotation direction of the second shell.
4. A solid state amine desorption apparatus as claimed in claim 1, wherein the heating assembly comprises:
a heat source;
and one end of the air inlet mechanism is connected with the heat source, and the other end of the air inlet mechanism is connected with the heating space and is used for adjusting the air inlet quantity of the air inlet mechanism according to the temperature in the second shell and adjusting the air flow in the heating space under the combined action of the air inlet mechanism and the flow guide piece.
5. A solid state amine desorption apparatus as claimed in claim 4 wherein the air inlet means comprises:
a ring member disposed at an end of the first housing;
at least 1 partition plate provided inside the ring member for dividing an annular space of the ring member into at least 2 intake passages;
at least 1 pipe member having one end communicating with the intake passage and the other end connected with the heat source for communicating the heat source with the heating space through the intake passage;
the switch group is arranged in the pipe fitting and used for controlling the on-off of any pipe fitting according to the temperature in the second shell.
6. The solid amine desorption apparatus of claim 1 wherein the second housing further comprises: at least 3L-shaped plates;
the L-shaped plates are uniformly distributed in the second shell body and are used for stirring the solid amine to be desorbed;
at least 1 bulge facing the direction of the inner side wall of the second shell body is arranged on the long side of the L-shaped plate;
the included angle between the long side of the L-shaped plate and the short side of the L-shaped plate gradually becomes smaller along with the movement direction of the solid amine particles to be desorbed.
7. A solid state amine desorption apparatus as claimed in claim 1, further comprising: a vacuum pump;
the vacuum pump is arranged at the output end of the second shell and is used for providing a vacuum state after the temperature in the second shell reaches the desorption temperature.
8. A solid state amine desorption apparatus as claimed in claim 1, further comprising: a steam generation unit;
the steam generation unit is connected with the inside of the second shell and is used for inputting steam into the inside of the second shell so as to increase the desorption efficiency of the solid amine.
9. A solid amine carbon capture system, comprising:
the adsorption component is used for adsorbing carbon dioxide in the flue gas through solid amine to obtain solid amine for adsorbing carbon dioxide;
a solid amine desorption apparatus as claimed in any one of claims 1 to 7, which is connected to the material output of the adsorption module for desorbing the carbon dioxide-adsorbed solid amine;
the gas collection assembly is connected with the gas output end of the adsorption assembly and is used for outputting the gas after carbon capture;
the data acquisition component is respectively arranged at the input end of the adsorption component, the output end of the solid amine desorption device and the output end of the adsorption component and is used for acquiring flow data and gas component data;
and the control unit is electrically connected with the data acquisition component and is used for adjusting the feeding amount and/or the heating amount of the solid amine desorption device according to the flow data and the gas component data.
10. The solid amine carbon capture system of claim 9, wherein the adsorption assembly comprises:
a first stage bubbling mechanism for receiving the solid per-particle;
a second-stage bubbling mechanism connected to the first-stage bubbling mechanism for receiving the solid amine particles adsorbed by the first-stage bubbling mechanism;
a third stage sparging mechanism, coupled to the second stage sparging mechanism, for receiving solid amine particles adsorbed via the second stage sparging mechanism;
the output end of the first-stage bubbling mechanism is positioned at 2/3 of the first-stage bubbling mechanism, and the input end of the second-stage bubbling mechanism is positioned at 2/3 of the second-stage bubbling mechanism;
the output end of the second-stage bubbling mechanism is positioned at 1/2 of the second-stage bubbling mechanism, and the input end of the third-stage bubbling mechanism is positioned at 1/2 of the third-stage bubbling mechanism.
11. The solid amine carbon capture system of claim 9, wherein the gas collection assembly comprises:
the input end of the cyclone separator is connected with the output end of the adsorption component and is used for separating solid amine particles;
the collector is connected with the gas output end of the cyclone separator and is used for collecting the gas output by the cyclone separator;
the induced draft fan is connected with the gas output end of the collector and is used for providing negative pressure and discharging gas;
the solid output end of the cyclone separator is connected with the input end of the solid amine desorption device;
the solid output end of the collector is connected with the input end of the solid amine desorption device.
12. A solid amine carbon capture system according to claim 9, wherein:
the first shell in the solid amine desorption device is obliquely arranged;
the included angle between the axis of the first shell and the horizontal plane is 3-8 degrees, and the height of the input end is higher than that of the output end.
13. The solid amine carbon capture system of claim 9, further comprising: a transport assembly;
the delivery assembly includes:
the input end of the horizontal conveying section is connected with the solid output end of the solid amine desorption device and is used for conveying desorbed solid amine;
the input end of the vertical conveying section is connected with the output end of the horizontal conveying section and is used for cooling the desorbed solid amine;
the output end of the vertical conveying section is connected with the input end of the adsorption component.
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| CN202311400279.8A CN117180977B (en) | 2023-10-26 | Solid amine desorption device and solid amine carbon trapping system |
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| CN202311400279.8A CN117180977B (en) | 2023-10-26 | Solid amine desorption device and solid amine carbon trapping system |
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