CN113368666A - Energy-saving carbon dioxide capture equipment for flue gas treatment and implementation method thereof - Google Patents
Energy-saving carbon dioxide capture equipment for flue gas treatment and implementation method thereof Download PDFInfo
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- CN113368666A CN113368666A CN202110619615.2A CN202110619615A CN113368666A CN 113368666 A CN113368666 A CN 113368666A CN 202110619615 A CN202110619615 A CN 202110619615A CN 113368666 A CN113368666 A CN 113368666A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 302
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 151
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 151
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000003546 flue gas Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 150000001412 amines Chemical class 0.000 claims abstract description 9
- 238000000746 purification Methods 0.000 claims description 92
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 14
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
- B01D53/1475—Removing 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses energy-saving carbon dioxide capture equipment for flue gas treatment and an implementation method thereof, belonging to the technical field of carbon dioxide capture equipment. The horn head who sets up many orientations gathers the flue gas, and the acquisition range is extensive, and it helps during wind-force independently blows flue gas entering pipeline, practices thrift the kinetic energy that the flue gas was gathered, and sets up two carbon dioxide purifier alternate use, realizes incessant continuation and catches, and need not two-way transport amine water, simplifies and catches the step, reduces the operation degree of difficulty.
Description
Technical Field
The invention relates to the technical field of carbon dioxide capture equipment, in particular to energy-saving carbon dioxide capture equipment for flue gas treatment and an implementation method thereof.
Background
At present, the waste gas generated by boiler combustion and the waste gas in a chimney of a power plant contain a large amount of carbon dioxide and granular pollutants, if the carbon dioxide in the waste gas is not captured, the carbon dioxide released into the atmosphere can be directly discharged to bring harm to the natural environment, wherein the carbon capture is to capture the carbon dioxide released into the atmosphere, and the carbon dioxide is compressed and then pressed back to the exhausted oil field and natural gas field or other safe underground places, so that the greenhouse gas, namely the harmful gas generated by burning fossil fuel, can be reduced. However, the technical bottleneck of carbon capture still exists, and the implementation measures related to carbon capture are difficult to implement.
Patent No. CN201480046979.4 discloses a carbon dioxide recovery device, which is characterized by comprising: a carbon dioxide absorption tower that houses a carbon dioxide capture material, a heating unit that heats the carbon dioxide capture material, a flow path for introducing a carbon dioxide-containing gas into the carbon dioxide absorption tower, a flow path for introducing a regeneration gas into the carbon dioxide absorption tower, and a flow path for recovering a mixed gas containing a gas desorbed from the carbon dioxide capture material; the preheating of the carbon dioxide capturing material by the heating unit is performed, and then the regeneration gas is introduced into the carbon dioxide absorption tower to recover carbon dioxide from the carbon dioxide capturing material, and the supply time of the regeneration gas is set in advance, and the linear velocity of the regeneration gas in the carbon dioxide absorption tower is set to be 0.5 m/sec or more and 2.5 m/sec or less, and the carbon dioxide capturing material is an oxide containing Ce. However, the pipeline gas collection cannot be applied to capture carbon dioxide dissociated in the outside air, the capture range is narrow, the temperature difference applied to the capture agent during capture and separation by the carbon dioxide absorber is small, efficient and rapid separation of carbon dioxide and the separator cannot be realized, the capture agent needs to be cooled and captured, heated and separated, the capture agent is conveyed back and forth by using a pipeline in the operation process to improve the separation efficiency, the capture operation difficulty is high, and the flow is complicated.
Disclosure of Invention
The invention aims to provide energy-saving carbon dioxide capture equipment for flue gas treatment and an implementation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme: an energy-saving carbon dioxide capture device for flue gas treatment comprises a multidirectional collecting device, a flue gas purifying device, a left flow guide device, a right flow guide device, a left carbon dioxide purifying device, a right carbon dioxide purifying device and a PLC (programmable logic controller), wherein the lower end of the multidirectional collecting device is connected with the flue gas purifying device, the left side of the flue gas purifying device is provided with the left flow guide device and is connected with the left carbon dioxide purifying device through the left flow guide device, and the right side of the flue gas purifying device is provided with the right flow guide device and is connected with the right carbon dioxide purifying device through the left flow guide device;
the multidirectional collecting device comprises a horn head, a corner head, a longitudinal drainage tube, a one-way circulation assembly and a filter screen, wherein the rear end of the horn head is connected with the corner head in a locking manner, the filter screen is arranged at the front end port of the horn head, the lower end of the corner head is connected with the longitudinal drainage tube in a locking manner, and the tail end of the longitudinal drainage tube is provided with the one-way circulation assembly;
the one-way circulation assembly comprises a top plate, a bottom plate, guide columns, guide holes, a baffle and springs, wherein one end of each guide column is fixedly connected with the top plate, the other end of each guide column is fixedly connected with the baffle, the middle part of each guide column is connected with the bottom plate in a sliding mode, the springs are arranged between the bottom plate and the baffle, and the guide holes which are staggered with each other are formed in the top plate and the bottom plate;
the structure of the left flow guide device is consistent with that of the right flow guide device, wherein the right flow guide device comprises a main flow guide pipe, a main axial fan, a main electromagnetic valve and a main sensor, one end of the main flow guide pipe is connected with an exhaust port of the flue gas purification device, the main flow guide pipe is connected with the main axial fan and the main electromagnetic valve in series, and the main sensor is arranged at the position of the main electromagnetic valve;
the structure of the leftward carbon dioxide purification device is consistent with that of the rightward carbon dioxide purification device, wherein the rightward carbon dioxide purification device comprises a device main body, an annular water pipe, a net frame, a water-proof breathable film, an auxiliary flow guide pipe, an auxiliary axial fan, an auxiliary electromagnetic valve and an auxiliary sensor, the middle of the device main body is hollow, the hollow part is provided with the downward depression and is an annular net frame, the water-proof breathable film is paved in the net frame, the annular water pipe is arranged in the side wall of the device main body, the upper end of the device main body is connected with the auxiliary flow guide pipe, the auxiliary axial fan and the auxiliary electromagnetic valve are connected to the auxiliary flow guide pipe in series, the auxiliary electromagnetic valve is provided with the auxiliary sensor, and one end of the main flow guide pipe vertically extends towards the inside of the device main body and penetrates through a round hole in the middle of the net frame.
Furthermore, a transverse drainage tube is arranged between the horn head and the pipe bending head, and the length of the transverse drainage tube is smaller than that of the longitudinal drainage tube.
Furthermore, the horn heads are four in total, and the ports of the four horn heads face different directions respectively.
Further, the flue gas purification device is one of a bag-type dust collector and an electrostatic dust collector.
Furthermore, a buffer gas tank is connected between the flue gas purification device and the left diversion device and between the flue gas purification device and the right diversion device through pipelines.
Furthermore, a monoethanolamine solution is contained in the middle cavity of the device main body.
Further, the main sensor and the auxiliary sensor are both carbon dioxide concentration sensors.
Further, the annular water pipe is connected with a heat exchange system.
Further, a folding tube is provided at the upper end of the device body.
According to another aspect of the present invention, there is provided a method for implementing an energy-saving carbon dioxide capture device for flue gas treatment, comprising the steps of:
s101: closing a main electromagnetic valve of the left-hand carbon dioxide purification device, closing an auxiliary electromagnetic valve, opening the main electromagnetic valve on the right-hand carbon dioxide purification device, and closing the auxiliary electromagnetic valve;
s102: introducing low-temperature cooling liquid into an annular water pipe of the right-hand carbon dioxide purification device, starting a main shaft to a fan, and enabling smoke to enter the smoke purification device from a horn head;
s103: after the flue gas is purified, the flue gas enters a monoethanolamine solution along a main flow pipe and is absorbed by the monoethanolamine solution to form amine water;
s104: after the monoethanolamine solution is absorbed and absorbed to be saturated, the main electromagnetic valve of the left-going carbon dioxide purification device is opened, the auxiliary electromagnetic valve is closed, the main electromagnetic valve of the right-going carbon dioxide purification device is closed, and the auxiliary electromagnetic valve is opened;
s105: introducing low-temperature cooling liquid into an annular water pipe of the left-hand carbon dioxide purification device, and introducing high-temperature liquid into an annular water pipe of the right-hand carbon dioxide purification device;
s106: heating and separating carbon dioxide and amine water from a combination of amine water and carbon dioxide in the right-hand carbon dioxide purification device, and enabling the carbon dioxide to enter a carbon dioxide storage tank from the auxiliary guide pipe;
s107: after the flue gas is purified, the flue gas enters the leftward carbon dioxide purification device along the auxiliary guide pipe, and the process of the leftward carbon dioxide purification device is repeated.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the energy-saving carbon dioxide capture equipment for flue gas treatment and the implementation method thereof, the multi-directional horn head is arranged to capture the flue gas containing carbon dioxide, the capture range is wide, the energy-saving carbon dioxide capture equipment is beneficial to wind power to automatically blow the flue gas into a pipeline, and the kinetic energy for capturing the carbon dioxide is saved;
2. according to the energy-saving carbon dioxide capture equipment for flue gas treatment and the implementation method thereof, the double carbon dioxide purification devices are arranged for alternate use, so that uninterrupted continuous capture is realized, two-way amine water conveying is not needed, the capture steps are simplified, and the operation difficulty is reduced;
3. according to the energy-saving carbon dioxide capture equipment for flue gas treatment and the implementation method thereof, the PLC controls the operation of each electromagnetic valve and the axial air through wireless signals, and the amount of carbon dioxide which can be absorbed by a monoethanolamine solution at a certain concentration at a single time is set according to the amount of the monoethanolamine solution, so that the alternate time point of double carbon dioxide purification devices is determined, and automatic control is realized.
Drawings
FIG. 1 is a schematic diagram of an energy-saving carbon dioxide capture device for flue gas treatment according to a first embodiment of the present invention;
FIG. 2 is a distribution diagram of a multi-directional collecting device of an energy-saving carbon dioxide capturing device for flue gas treatment according to a first embodiment of the present invention;
FIG. 3 is a structural diagram of a multi-directional collecting device of an energy-saving carbon dioxide capturing device for flue gas treatment according to a first embodiment of the present invention;
FIG. 4 is a structural diagram of a one-way flow component of the energy-saving carbon dioxide capture device for flue gas treatment according to the first embodiment of the invention;
FIG. 5 is a structural diagram of a right diversion device of the energy-saving carbon dioxide capture equipment for flue gas treatment in the first embodiment of the present invention;
FIG. 6 is a schematic diagram of a right-hand carbon dioxide purification device of an energy-saving carbon dioxide capture device for flue gas treatment according to a first embodiment of the present invention;
FIG. 7 is a structural diagram of a multi-directional collecting device of an energy-saving carbon dioxide capturing apparatus for flue gas treatment according to a second embodiment of the present invention;
FIG. 8 is an overall configuration diagram of an energy-saving carbon dioxide capturing apparatus for flue gas treatment according to a third embodiment of the present invention;
FIG. 9 is a schematic diagram of a right carbon dioxide purification apparatus of an energy-saving carbon dioxide capture device for flue gas treatment according to a fourth embodiment of the present invention;
FIG. 10 is a flow chart of an embodiment of the energy efficient carbon dioxide capture device for flue gas treatment of the present invention.
In the figure: 1. a multidirectional collection device; 11. a horn head; 12. pipe bending; 13. a longitudinal drainage tube; 14. a one-way flow-through assembly; 141. a top plate; 142. a base plate; 143. a guide post; 144. a flow guide hole; 145. a baffle plate; 146. a spring; 15. a filter screen; 16. a transverse drainage tube; 2. a flue gas purification device; 3. a left directional flow guide device; 4. a right flow guide device; 41. a main flow guide pipe; 42. a primary axial fan; 43. a main electromagnetic valve; 44. a primary sensor; 5. a leftward carbon dioxide purification device; 6. a right-hand carbon dioxide purification device; 61. a device main body; 62. an annular water pipe; 63. a screen frame; 64. a water-proof and breathable film; 65. the auxiliary guide pipe; 66. an auxiliary axial fan; 67. a secondary solenoid valve; 68. a secondary sensor; 69. folding the tube; 7. a PLC controller; 8. the gas tank is buffered.
Detailed Description
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.
Example one
Referring to fig. 1, an energy-saving carbon dioxide capture device for flue gas treatment, including multidirectional collection system 1, flue gas purification device 2, left direction guiding device 3, right direction guiding device 4, left direction carbon dioxide purification device 5, right direction carbon dioxide purification device 6 and PLC controller 7, the lower extreme and the flue gas purification device 2 interconnect of multidirectional collection system 1, flue gas purification device 2 is one of sack cleaner, electrostatic precipitator, the left side of flue gas purification device 2 is provided with left direction guiding device 3, and connect left direction carbon dioxide purification device 5 through left direction guiding device 3, the right side of flue gas purification device 2 is provided with right direction guiding device 4, and connect right direction carbon dioxide purification device 6 through left direction guiding device 3.
Referring to fig. 2 to 3, multidirectional collection system 1 includes horn head 11, corner 12, vertical drainage tube 13, one-way circulation subassembly 14 and filter screen 15, the equal locking connection in rear end of horn head 11 has corner 12, and the front end port department of horn head 11 installs filter screen 15, horn head 11 is total four, and four horn head 11's port respectively towards different directions, the lower extreme locking connection of corner 12 has vertical drainage tube 13, one-way circulation subassembly 14 is installed to the tail end of vertical drainage tube 13.
Referring to fig. 4, the one-way flow assembly 14 includes a top plate 141, a bottom plate 142, a guide post 143, a guide hole 144, a baffle 145 and a spring 146, wherein one end of the guide post 143 is fixedly connected with the top plate 141, the other end of the guide post 143 is fixedly connected with the baffle 145, the middle of the guide post 143 is slidably connected with the bottom plate 142, the spring 146 is disposed between the bottom plate 142 and the baffle 145, and the top plate 141 and the bottom plate 142 are provided with the guide holes 144 which are dislocated with each other.
Referring to fig. 5 to 6, the left flow guiding device 3 and the right flow guiding device 4 have the same structure, wherein the right flow guiding device 4 includes a main flow guiding pipe 41, a main axial fan 42, a main electromagnetic valve 43 and a main sensor 44, the main sensor 44 and an auxiliary sensor 68 are both carbon dioxide concentration sensors, one end of the main flow guiding pipe 41 is connected to an exhaust port of the flue gas purification device 2, the main axial fan 42 and the main electromagnetic valve 43 are connected to the main flow guiding pipe 41 in series, and the main sensor 44 is disposed at the main electromagnetic valve 43.
The structure of the left carbon dioxide purification device 5 is identical to that of the right carbon dioxide purification device 6, wherein, the right carbon dioxide purification device 6 comprises a device main body 61, an annular water pipe 62, a screen frame 63, a water-stop and breathable film 64, an auxiliary draft tube 65, an auxiliary axial fan 66, an auxiliary electromagnetic valve 67 and an auxiliary sensor 68, wherein the middle part of the device main body 61 is hollow, this hollow portion is provided with undercut and is annular net frame 63, net frame 63 middle berth is equipped with water proof ventilated membrane 64, it has annular water pipe 62 to embed in the lateral wall of device main part 61, annular water pipe 62 is connected with heat transfer system, the upper end of device main part 61 is connected with vice honeycomb duct 65, monoethanolamine solution has been held in the middle part cavity of device main part 61, the last series connection of vice honeycomb duct 65 has vice axial fan 66 and vice solenoid valve 67, vice solenoid valve 67 department is provided with vice sensor 68, the one end of main honeycomb duct 41 is to the inside perpendicular round hole that extends and pass the middle part of net frame 63 of device main part 61.
Example two
Referring to fig. 7, the difference between the first embodiment and the second embodiment is only that the structure of the multidirectional collection device 1 is different, the multidirectional collection device 1 includes a horn head 11, a corner 12, a longitudinal drainage tube 13, a one-way circulation component 14 and a filter screen 15, the rear end of the horn head 11 is all connected with the corner 12 in a locking manner, the filter screen 15 is installed at the front end port of the horn head 11, the horn heads 11 are four in total, the ports of the four horn heads 11 face different directions respectively, the lower end of the corner head 12 is connected with the longitudinal drainage tube 13 in a locking manner, the one-way circulation component 14 is installed at the tail end of the longitudinal drainage tube 13, a transverse drainage tube 16 is arranged between the horn head 11 and the corner head 12, and the length of the transverse drainage tube 16 is smaller than that of the longitudinal drainage tube 13.
EXAMPLE III
Referring to fig. 8, the difference between the first embodiment and the second embodiment is only that a buffer gas tank 8 is additionally provided, and the energy-saving carbon dioxide capture device for flue gas treatment comprises a multidirectional collection device 1, a flue gas purification device 2, a left-directional flow guide device 3, a right-directional flow guide device 4, a left-directional carbon dioxide purification device 5, a right-directional carbon dioxide purification device 6 and a PLC controller 7, wherein the lower end of the multidirectional collection device 1 is connected with the flue gas purification device 2, the flue gas purification device 2 is one of a bag dust collector and an electrostatic dust collector, the left-directional flow guide device 3 is arranged on the left side of the flue gas purification device 2 and is connected with the left-directional carbon dioxide purification device 5 through the left-directional flow guide device 3, the right-directional flow guide device 4 is arranged on the right side of the flue gas purification device 2 and is connected with the right-directional carbon dioxide purification device 6 through the left-directional flow guide device 3, and a gap between the flue gas purification device 2 and the left-directional flow guide device 3 is formed between the two, A buffer gas tank 8 is connected between the flue gas purification device 2 and the right diversion device 4 through pipelines.
Example four
Referring to fig. 9, the difference between the first embodiment and the second embodiment is only that the structure of the right carbon dioxide purification device 6 is different, and the structures of the left carbon dioxide purification device 5 and the right carbon dioxide purification device 6 are the same, wherein the right carbon dioxide purification device 6 includes a device main body 61, an annular water pipe 62, a net frame 63, a water-proof permeable membrane 64, an auxiliary draft tube 65, an auxiliary axial fan 66, an auxiliary electromagnetic valve 67, and an auxiliary sensor 68, the middle portion of the device main body 61 is hollow, the hollow portion is provided with the annular net frame 63 which is concave downward and annular, the water-proof permeable membrane 64 is laid in the net frame 63, the annular water pipe 62 is built in the side wall of the device main body 61, the annular water pipe 62 is connected with a heat exchange system, the upper end of the device main body 61 is connected with the auxiliary draft tube 65, the monoethanolamine solution is contained in the middle cavity of the device main body 61, the auxiliary draft tube 65 is connected with the auxiliary axial fan 66 and the auxiliary electromagnetic valve 67 in series, the auxiliary solenoid valve 67 is provided with an auxiliary sensor 68, one end of the main flow pipe 41 vertically extends towards the inside of the device main body 61 and passes through a circular hole in the middle of the mesh frame 63, and the upper end of the device main body 61 is provided with a folding pipe 69.
Referring to fig. 10, in order to better show the implementation flow of the energy-saving carbon dioxide capture device for flue gas treatment, the embodiment now provides an implementation method of the energy-saving carbon dioxide capture device for flue gas treatment, which includes the following steps:
s101: the main electromagnetic valve 43 of the left carbon dioxide purification device 5 is closed, the auxiliary electromagnetic valve 67 is closed, the main electromagnetic valve 43 of the right carbon dioxide purification device 6 is opened, and the auxiliary electromagnetic valve 67 is closed;
s102: the annular water pipe 62 of the right carbon dioxide purification device 6 is filled with low-temperature cooling liquid, the main axial fan 42 is started, and the flue gas enters the flue gas purification device 2 from the horn head 11;
s103: after being purified, the flue gas enters the monoethanolamine solution along the main flow pipe 41 and is absorbed by the monoethanolamine solution to form amine water;
s104: after the monoethanolamine solution is absorbed and absorbed to be saturated, the main electromagnetic valve 43 of the left-hand carbon dioxide purification device 5 is opened, the auxiliary electromagnetic valve 67 is closed, the main electromagnetic valve 43 of the right-hand carbon dioxide purification device 6 is closed, and the auxiliary electromagnetic valve 67 is opened;
s105: low-temperature cooling liquid is introduced into the annular water pipe 62 of the left-hand carbon dioxide purification device 5, and high-temperature liquid is introduced into the annular water pipe 62 of the right-hand carbon dioxide purification device 6;
s106: the amine water and carbon dioxide combination in the right carbon dioxide purification device 6 is heated to separate carbon dioxide and amine water, and the carbon dioxide enters a carbon dioxide storage tank from the auxiliary draft tube 65;
s107: after the flue gas is purified, the flue gas enters the leftward carbon dioxide purification device 5 along the auxiliary guide pipe 65, and the process of the leftward carbon dioxide purification device 5 is repeated.
In summary, the following steps: according to the energy-saving carbon dioxide capture equipment for flue gas treatment and the implementation method thereof, the multi-directional horn head 11 is arranged to capture the flue gas containing carbon dioxide, the capture range is wide, the energy-saving carbon dioxide capture equipment is beneficial to wind power to automatically blow the flue gas into a pipeline, and the kinetic energy for capturing the carbon dioxide is saved; the double carbon dioxide purification devices are arranged for alternate use, so that uninterrupted continuous capture is realized, the amine water does not need to be conveyed bidirectionally, the capture steps are simplified, and the operation difficulty is reduced; the PLC 7 controls the operation of each electromagnetic valve and the axial air through wireless signals, and the amount of the carbon dioxide which can be absorbed by the monoethanolamine solution at a certain concentration in a single time is set according to the amount of the monoethanolamine solution, so that the alternate time point of the double carbon dioxide purification devices is determined, and automatic control is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The energy-saving carbon dioxide capture equipment for flue gas treatment is characterized by comprising a multidirectional acquisition device (1), a flue gas purification device (2), a leftward flow guide device (3), a rightward flow guide device (4), a leftward carbon dioxide purification device (5), a rightward carbon dioxide purification device (6) and a PLC (programmable logic controller) (7), wherein the lower end of the multidirectional acquisition device (1) is connected with the flue gas purification device (2), the leftward flow guide device (3) is arranged on the left side of the flue gas purification device (2), the leftward carbon dioxide purification device (5) is connected through the leftward flow guide device (3), the rightward flow guide device (4) is arranged on the right side of the flue gas purification device (2), and the rightward carbon dioxide purification device (6) is connected through the leftward flow guide device (3);
the multidirectional collecting device (1) comprises a horn head (11), a corner (12), a longitudinal drainage tube (13), a one-way circulation component (14) and a filter screen (15), wherein the rear end of the horn head (11) is connected with the corner (12) in a locking mode, the lower end of the corner (12) is connected with the longitudinal drainage tube (13) in a locking mode, and the tail end of the longitudinal drainage tube (13) is provided with the one-way circulation component (14);
the one-way circulation assembly (14) comprises a top plate (141), a bottom plate (142), guide columns (143), guide holes (144), a baffle (145) and springs (146), wherein the top plate (141) is fixedly connected to one ends of the guide columns (143), the baffle (145) is fixedly connected to the other ends of the guide columns (143), the bottom plate (142) is slidably connected to the middle of the guide columns (143), the springs (146) are arranged between the bottom plate (142) and the baffle (145), and the guide holes (144) which are staggered with each other are formed in the top plate (141) and the bottom plate (142).
2. The energy-saving carbon dioxide capturing device for flue gas treatment as claimed in claim 1, wherein a transverse draft tube (16) is arranged between the horn head (11) and the corner (12), the length of the transverse draft tube (16) is smaller than that of the longitudinal draft tube (13), and a filter screen (15) is installed at the front end port of the horn head (11).
3. The energy-saving carbon dioxide capturing device for flue gas treatment as claimed in claim 1, wherein the number of the horn heads (11) is four, and the ports of the four horn heads (11) are respectively oriented to different directions, and a filter screen (15) is installed at the front end port of the horn head (11).
4. The energy-saving carbon dioxide capture equipment for flue gas treatment as claimed in claim 1, wherein the flue gas purification device (2) is one of a bag-type dust collector and an electrostatic dust collector, and a buffer gas tank (8) is connected between the flue gas purification device (2) and the left diversion device (3) and between the flue gas purification device (2) and the right diversion device (4) through pipelines.
5. The energy-saving carbon dioxide capturing device for flue gas treatment as claimed in claim 1, wherein the left diversion device (3) and the right diversion device (4) are identical in structure, wherein the right diversion device (4) comprises a main diversion pipe (41), a main axial fan (42), a main electromagnetic valve (43) and a main sensor (44), one end of the main diversion pipe (41) is connected with the exhaust port of the flue gas purification device (2), the main axial fan (42) and the main electromagnetic valve (43) are connected in series on the main diversion pipe (41), and the main sensor (44) is arranged at the main electromagnetic valve (43).
6. The energy-saving carbon dioxide capture equipment for flue gas treatment according to claim 5, wherein the structure of the left carbon dioxide purification device (5) is the same as that of the right carbon dioxide purification device (6), wherein the right carbon dioxide purification device (6) comprises a device main body (61), an annular water pipe (62), a net frame (63), a water-proof and breathable film (64), an auxiliary draft tube (65), an auxiliary axial fan (66), an auxiliary electromagnetic valve (67) and an auxiliary sensor (68), the upper end of the device main body (61) is connected with the auxiliary draft tube (65), the auxiliary axial fan (66) and the auxiliary electromagnetic valve (67) are connected in series on the auxiliary draft tube (65), and the auxiliary sensor (68) is arranged at the position of the auxiliary electromagnetic valve (67).
7. The energy-saving carbon dioxide capturing device for flue gas treatment as claimed in claim 6, wherein the device body (61) is hollow in the middle, the hollow part is provided with a downwardly concave and annular net frame (63), a water-proof and gas-permeable membrane (64) is laid in the net frame (63), and a monoethanolamine solution is contained in the middle cavity of the device body (61).
8. The energy-saving carbon dioxide capture equipment for flue gas treatment as claimed in claim 6, wherein the annular water pipe (62) is arranged in the side wall of the device main body (61), the annular water pipe (62) is connected with a heat exchange system, the main sensor (44) and the auxiliary sensor (68) are both carbon dioxide concentration sensors, and the carbon dioxide concentration sensors and the heat exchange system are both connected with a controller.
9. The energy-saving carbon dioxide capturing device for flue gas treatment as claimed in claim 8, wherein one end of the main flow guiding pipe (41) extends vertically to the inside of the device body (61) and passes through a circular hole in the middle of the screen frame (63), and the upper end of the device body (61) is provided with a folding pipe (69).
10. A method for implementing an energy-saving carbon dioxide capture plant for flue gas treatment according to any one of claims 1 to 9, comprising the steps of:
s101: the main electromagnetic valve (43) of the left carbon dioxide purification device (5) is closed, the auxiliary electromagnetic valve (67) is closed, the main electromagnetic valve (43) of the right carbon dioxide purification device (6) is opened, and the auxiliary electromagnetic valve (67) is closed;
s102: introducing low-temperature cooling liquid into an annular water pipe (62) of the right-hand carbon dioxide purification device (6), starting a main axial fan (42), and enabling smoke to enter the smoke purification device (2) from a horn head (11);
s103: after being purified, the flue gas enters the monoethanolamine solution along the main flow guide pipe (41) and is absorbed by the monoethanolamine solution to form amine water;
s104: after the monoethanolamine solution is absorbed and absorbed to be saturated, a main electromagnetic valve (43) of the left-hand carbon dioxide purification device (5) is opened, a secondary electromagnetic valve (67) is closed, a main electromagnetic valve (43) of the right-hand carbon dioxide purification device (6) is closed, and the secondary electromagnetic valve (67) is opened;
s105: low-temperature cooling liquid is introduced into an annular water pipe (62) of the left-hand carbon dioxide purification device (5), and high-temperature liquid is introduced into an annular water pipe (62) of the right-hand carbon dioxide purification device (6);
s106: the combination of the amine water and the carbon dioxide in the right-hand carbon dioxide purification device (6) is heated to separate the carbon dioxide and the amine water, and the carbon dioxide enters a carbon dioxide storage tank from an auxiliary guide pipe (65);
s107: after the flue gas is purified, the flue gas enters the leftward carbon dioxide purification device (5) along the auxiliary guide pipe (65), and the process of the leftward carbon dioxide purification device (5) is repeated.
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Application publication date: 20210910 |