CN215711774U - Hydrogen separation equipment with high-purity propane dehydrogenation reaction gas after separation - Google Patents
Hydrogen separation equipment with high-purity propane dehydrogenation reaction gas after separation Download PDFInfo
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- CN215711774U CN215711774U CN202121302808.7U CN202121302808U CN215711774U CN 215711774 U CN215711774 U CN 215711774U CN 202121302808 U CN202121302808 U CN 202121302808U CN 215711774 U CN215711774 U CN 215711774U
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- membrane separation
- tower
- hydrogen
- dehydrogenation reaction
- reaction gas
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- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000000926 separation method Methods 0.000 title claims abstract description 87
- 239000001257 hydrogen Substances 0.000 title claims abstract description 49
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 49
- 239000001294 propane Substances 0.000 title claims abstract description 47
- 239000012495 reaction gas Substances 0.000 title claims abstract description 43
- 238000006356 dehydrogenation reaction Methods 0.000 title claims abstract description 42
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title claims abstract 10
- 239000012528 membrane Substances 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 238000010521 absorption reaction Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims description 23
- 239000002250 absorbent Substances 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 21
- 230000002745 absorbent Effects 0.000 claims description 20
- 239000012466 permeate Substances 0.000 abstract description 20
- 238000005057 refrigeration Methods 0.000 abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 229930195733 hydrocarbon Natural products 0.000 description 13
- 150000002430 hydrocarbons Chemical class 0.000 description 13
- 150000002431 hydrogen Chemical class 0.000 description 11
- 239000004215 Carbon black (E152) Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 2
- 238000004230 steam cracking Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Abstract
The utility model discloses hydrogen separation equipment with separated propane dehydrogenation reaction gas with high purity, which relates to the technical field of hydrogen separation devices and comprises a cooling tank, membrane separation tower and absorption tower, one side that the inside of cooler bin was provided with the refrigerator is provided with the refrigeration pipe, the refrigeration pipe is fixed on the inner wall of cooler bin, one side of cooler bin is provided with cooler bin transmission mouth, one side of cooler bin transmission mouth is connected with first transmission pipe, one side at the membrane separation tower is connected to the other end of first transmission pipe, the outside of membrane separation tower is provided with membrane separation tower support frame, the inside of membrane separation tower is provided with membrane separation material, the top of membrane separation tower is provided with the permeate gas discharge port, the bottom of permeate gas discharge port is provided with the non-permeate gas vent, the one end of permeate gas discharge port is connected with the second and transmits the pipe, the one side at the absorption tower is connected to the other end of second transmission pipe.
Description
Technical Field
The utility model belongs to the technical field of hydrogen separation devices, and particularly relates to hydrogen separation equipment for propane dehydrogenation reaction gas with high purity after separation.
Background
Propylene is an important chemical raw material, mainly used for producing various products such as PP, isopropyl benzene, acrylonitrile, acrylic acid and the like, the current production method of propylene is a petroleum hydrocarbon steam cracking method, according to statistics, more than 50% of propylene in the world is produced by the method currently, the cracking temperature of industrial naphtha is increased to 840-860 ℃, the cracking temperature of a once-through small-diameter furnace tube is increased to more than 900 ℃, as the steam cracking method technology is improved day by day, the scope of improvement is not large, and the method has high reaction temperature, expensive high-temperature resistant alloy materials, high energy consumption, easy coking and strict raw material requirements (harsh raw oil), so in recent years, catalytic workers turn more attention to the research of producing propylene by other new technologies, including the technology for preparing propylene by catalytic cracking and the like.
In the prior art, the energy consumption and equipment investment for separating hydrogen under the high-pressure cryogenic condition in the technology for preparing propylene by propane dehydrogenation are quite high, and the hydrogen in the reaction gas is separated by using the reported oil absorption method, so that the circulation amount of the required absorbent is very large due to the high hydrogen content.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide hydrogen separation equipment with propane dehydrogenation reaction gas with high purity after separation, which is characterized in that a propane dehydrogenation reaction gas inlet is arranged, the propane dehydrogenation reaction gas is compressed through a compression pump, then the compressed propane dehydrogenation reaction gas is discharged into a cooling box for cooling through an arranged compression transmission pipe, a refrigerator is arranged at the bottom of the cooling box and refrigerates into the cooling box through an arranged refrigeration pipe to achieve the effect of cooling the propane dehydrogenation reaction gas, the cooled propane dehydrogenation reaction gas is discharged into a membrane separation tower through an arranged first transmission pipe, the cooled propane dehydrogenation reaction gas is subjected to membrane separation through a membrane separation material arranged in the membrane separation tower to obtain permeation gas containing methane and hydrogen and hydrocarbon-rich non-permeation gas, the method comprises the steps of arranging a permeate gas discharge port at the top of a membrane separation tower, discharging permeate gas containing methane and hydrogen into an absorption tower through a second transmission pipe, arranging an absorbent in the absorption tower, and adopting C4-C8 hydrocarbon as the absorbent, so that the separation of the hydrogen and C2 and above hydrocarbons can be realized, the purity of the separated hydrogen is high, the absorbent can be recycled, the equipment investment is low, the energy consumption is low, and then the hydrogen is discharged through the hydrogen discharge port arranged at the top of the absorption tower, so that the problems that the energy consumption and the equipment investment for separating the hydrogen under the high-pressure cryogenic condition are quite high, and the hydrogen in the reaction gas is separated by using the reported oil absorption method, and the circulation amount of the required absorbent is quite large due to the high hydrogen content.
In order to achieve the purpose, the utility model provides the following technical scheme: a hydrogen separation device of propane dehydrogenation reaction gas with high purity after separation, which comprises a cooling tank, a membrane separation tower and an absorption tower, a refrigerating pipe is arranged at one side of the refrigerator, which is arranged in the cooling box, the refrigerating pipe is fixed on the inner wall of the cooling box, one side of the cooling box is provided with a cooling box transmission port, one side of the cooling box transmission port is connected with a first transmission pipe, the other end of the first transmission pipe is connected with one side of the membrane separation tower, a membrane separation tower supporting frame is arranged on the outer side of the membrane separation tower, the membrane separation tower is internally provided with membrane separation materials, the top of the membrane separation tower is provided with a permeate gas discharge port, the bottom of the permeate gas discharge port is provided with a non-permeate gas discharge port, one end of the permeate gas discharge port is connected with a second conveying pipe, and the other end of the second conveying pipe is connected to one side of the absorption tower.
Preferably, an absorption tower supporting frame is arranged on the outer side of the absorption tower, and an absorbent is arranged in the absorption tower.
Preferably, the top of the membrane separation tower is provided with a hydrogen discharge port, and the bottom of the absorption tower is provided with an absorbent discharge port.
Preferably, one side of the cooling box is connected with a compression transmission pipe, and the other end of the compression transmission pipe is connected with a compressor gas tank.
Preferably, a compression pump is arranged at the upper end of the compressor gas tank, and a motor is arranged on one side of the compression pump.
Preferably, one side of the compressor air tank is provided with a propane air inlet.
Compared with the prior art, the utility model has the beneficial effects that:
1. the propane dehydrogenation reaction gas is compressed by the compression pump through the propane dehydrogenation reaction gas inlet, then the compressed propane dehydrogenation reaction gas is discharged into the cooling box for cooling through the arranged compression transmission pipe, and the refrigerating machine is arranged at the bottom of the cooling box and refrigerates into the cooling box through the arranged refrigerating pipe, so that the effect of cooling the propane dehydrogenation reaction gas is achieved.
2. The cooled propane dehydrogenation reaction gas is discharged into a membrane separation tower through a first transmission pipe, membrane separation is carried out on the cooled propane dehydrogenation reaction gas through a membrane separation material arranged in the membrane separation tower to obtain permeation gas containing methane and hydrogen and hydrocarbon-rich non-permeation gas, a permeation gas discharge port is formed in the top of the membrane separation tower, the permeation gas containing methane and hydrogen is discharged into an absorption tower through a second transmission pipe, an absorbent is arranged in the absorption tower, C4-C8 hydrocarbon is used as the absorbent, separation of hydrogen and C2 and above hydrocarbons can be achieved, the purity of the separated hydrogen is high, the absorbent can be recycled, the equipment investment is low, the energy consumption is low, and then the hydrogen is discharged through a hydrogen discharge port formed in the top of an ethanol absorption tower.
Drawings
FIG. 1 is a front view structural diagram of the present invention;
FIG. 2 is a view showing the construction of a cooling tank of the present invention;
FIG. 3 is a structural view of a membrane separation column of the present invention.
In the figure: 1-cooling box, 2-membrane separation tower, 3-absorption tower, 4-compressor gas tank, 5-refrigerator, 6-refrigeration pipe, 7-first transmission pipe, 8-non-permeate gas exhaust port, 9-membrane separation tower support frame, 10-absorbent discharge port, 11-absorption tower support frame, 12-absorbent, 13-hydrogen discharge port, 14-second transmission pipe, 15-membrane separation material, 16-compression transmission pipe, 17-compression pump, 18-motor, 19-propane gas inlet, 20-cooling box transmission port and 21-permeate gas discharge port.
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.
Referring to fig. 1-3, an embodiment of the present invention is shown: a hydrogen separation apparatus having a propane dehydrogenation reaction gas of high purity after separation, comprising a cooling tank 1, membrane separation tower 2 and absorption tower 3, one side that the inside of cooler bin 1 was provided with 5 refrigerators 5 is provided with refrigeration pipe 6, refrigeration pipe 6 is fixed on the inner wall of cooler bin 1, one side of cooler bin 1 is provided with cooler bin transmission mouth 20, one side of cooler bin transmission mouth 20 is connected with first transmission pipe 7, one side at membrane separation tower 2 is connected to the other end of first transmission pipe 7, the outside of membrane separation tower 2 is provided with membrane separation tower support frame 9, the inside of membrane separation tower 2 is provided with membrane separation material 15, the top of membrane separation tower 2 is provided with permeate gas discharge port 21, the bottom of permeate gas discharge port 21 is provided with non-permeate gas vent 8, the one end of permeate gas discharge port 21 is connected with second transmission pipe 14, the other end of second transmission pipe 14 is connected in one side of absorption tower 3.
The propane dehydrogenation reaction gas is compressed by a compression pump 17 through an air inlet 19 of the propane dehydrogenation reaction gas, then the compressed propane dehydrogenation reaction gas is discharged into a cooling box 1 for cooling through an arranged compression transmission pipe 16, a refrigerator 5 is arranged at the bottom of the cooling box 1, the refrigerator 5 refrigerates into the cooling box 1 through an arranged refrigeration pipe 6 to achieve the effect of cooling the propane dehydrogenation reaction gas, the cooled propane dehydrogenation reaction gas is discharged into a membrane separation tower 2 through an arranged first transmission pipe 7, the cooled propane dehydrogenation reaction gas is subjected to membrane separation through a membrane separation material 15 arranged in the membrane separation tower 2 to obtain permeation gas containing methane and hydrogen and hydrocarbon-rich non-permeation gas, a permeation gas discharge port 21 is arranged at the top of the membrane separation tower 2, the permeating gas containing methane and hydrogen is discharged into the absorption tower 3 through the second conveying pipe 14, the absorption agent 12 is arranged in the absorption tower 3, C4-C8 hydrocarbon is used as the absorption agent, the separation of the hydrogen and the C2 and above hydrocarbons can be realized, the purity of the separated hydrogen is high, the absorption agent can be recycled, the equipment investment is low, the energy consumption is low, and then the hydrogen is discharged through the hydrogen discharge port 13 arranged at the top of the absorption tower 3.
In this embodiment, an absorber support 11 is provided outside the absorber 3, and an absorbent 12 is provided inside the absorber 3.
The absorption tower support 11 is arranged for supporting the absorption tower 3, and the absorbent 12 is arranged for separating hydrogen and C2 and above hydrocarbons.
In the present embodiment, the top of the membrane separation column 2 is provided with a hydrogen gas discharge port 13, and the bottom of the absorption column 3 is provided with an absorbent discharge port 10.
Through the arranged hydrogen gas discharge outlet 13, the separated hydrogen gas is discharged, and through the arranged absorbent discharge outlet 10, the absorbent 12 is replaced.
In the present embodiment, a compression transmission pipe 16 is connected to one side of the cooling tank 1, and a compressor gas tank 4 is connected to the other end of the compression transmission pipe 16.
The compressed propane dehydrogenation reaction gas is transmitted through a compression transmission pipe 16, and the compressed propane dehydrogenation reaction gas is conveniently compressed through a compressor gas tank 4.
In the present embodiment, the compressor air tank 4 is provided at an upper end thereof with a compression pump 17, and one side of the compression pump 17 is provided with a motor 18.
The propane dehydrogenation reaction gas is compressed by a compressor pump 17, and the compressor pump 17 is powered by a motor 18.
In the present embodiment, one side of the compressor gas tank 4 is provided with a propane gas inlet 19.
The propane dehydrogenation reaction gas is conveniently compressed and transmitted through the arranged propane gas inlet 19.
The working principle is as follows:
step 1: the propane dehydrogenation reaction gas is firstly compressed through a compression pump 17 by arranging a propane dehydrogenation reaction gas inlet 19, then the compressed propane dehydrogenation reaction gas is discharged into a cooling box 1 for cooling through an arranged compression transmission pipe 16, and the refrigerator 5 is arranged at the bottom of the cooling box 1 and refrigerates into the cooling box 1 through an arranged refrigeration pipe 6, so that the effect of cooling the propane dehydrogenation reaction gas is achieved.
Step 2: the cooled propane dehydrogenation reaction gas is discharged into the membrane separation tower 2 through a first transmission pipe 7, the cooled propane dehydrogenation reaction gas is subjected to membrane separation by a membrane separation material 15 arranged in the membrane separation tower 2 to obtain a permeate gas containing methane and hydrogen and a hydrocarbon-rich non-permeate gas, by providing a permeate gas discharge port 21 at the top of the membrane separation column 2, the permeate gas containing methane and hydrogen is discharged into the absorption column 3 through the second transfer pipe 14, by arranging the absorbent 12 in the absorption tower 3 and using C4-C8 hydrocarbon as the absorbent, the separation of hydrogen and C2 and above hydrocarbons can be realized, the purity of the separated hydrogen is high, the absorbent can be recycled, the equipment investment is low, the energy consumption is low, and then the hydrogen is discharged through the hydrogen discharge port 13 arranged at the top of the absorption tower 3.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A hydrogen separation equipment with high-purity propane dehydrogenation reaction gas after separation comprises a cooling tank (1), a membrane separation tower (2) and an absorption tower (3), and is characterized in that: the membrane separation device is characterized in that a refrigerating machine (5) is arranged inside the cooling box (1), a refrigerating pipe (6) is arranged on one side of the refrigerating machine (5), the refrigerating pipe (6) is fixed on the inner wall of the cooling box (1), a cooling box transmission port (20) is arranged on one side of the cooling box (1), a first transmission pipe (7) is connected to one side of the cooling box transmission port (20), the other end of the first transmission pipe (7) is connected to one side of the membrane separation tower (2), a membrane separation tower support frame (9) is arranged on the outer side of the membrane separation tower (2), a membrane separation material (15) is arranged inside the membrane separation tower (2), a permeable gas discharge port (21) is arranged at the top of the membrane separation tower (2), a non-permeable gas exhaust port (8) is arranged at the bottom of the permeable gas discharge port (21), a second transmission pipe (14) is connected to one end of the permeable gas discharge port (21), the other end of the second conveying pipe (14) is connected to one side of the absorption tower (3).
2. A hydrogen separation apparatus having a propane dehydrogenation reaction gas with a high purity after separation according to claim 1, characterized in that: an absorption tower supporting frame (11) is arranged on the outer side of the absorption tower (3), and an absorbent (12) is arranged in the absorption tower (3).
3. A hydrogen separation apparatus having a propane dehydrogenation reaction gas with a high purity after separation according to claim 2, characterized in that: the top of the membrane separation tower (2) is provided with a hydrogen discharge port (13), and the bottom of the absorption tower (3) is provided with an absorbent discharge port (10).
4. A hydrogen separation apparatus having a propane dehydrogenation reaction gas with a high purity after separation according to claim 1, characterized in that: one side of the cooling box (1) is connected with a compression transmission pipe (16), and the other end of the compression transmission pipe (16) is connected with a compressor gas tank (4).
5. A hydrogen separation apparatus having a propane dehydrogenation reaction gas with a high purity after separation according to claim 4, characterized in that: the upper end of the compressor gas tank (4) is provided with a compression pump (17), and one side of the compression pump (17) is provided with a motor (18).
6. A hydrogen separation apparatus having a propane dehydrogenation reaction gas with a high purity after separation according to claim 4, characterized in that: and a propane air inlet (19) is formed in one side of the compressor air tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121302808.7U CN215711774U (en) | 2021-06-09 | 2021-06-09 | Hydrogen separation equipment with high-purity propane dehydrogenation reaction gas after separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121302808.7U CN215711774U (en) | 2021-06-09 | 2021-06-09 | Hydrogen separation equipment with high-purity propane dehydrogenation reaction gas after separation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215711774U true CN215711774U (en) | 2022-02-01 |
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ID=80042418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121302808.7U Active CN215711774U (en) | 2021-06-09 | 2021-06-09 | Hydrogen separation equipment with high-purity propane dehydrogenation reaction gas after separation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215711774U (en) |
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2021
- 2021-06-09 CN CN202121302808.7U patent/CN215711774U/en active Active
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Effective date of registration: 20240125 Granted publication date: 20220201 |
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