CN218250159U - Device for improving four-carbon qualification rate - Google Patents
Device for improving four-carbon qualification rate Download PDFInfo
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- CN218250159U CN218250159U CN202222056962.1U CN202222056962U CN218250159U CN 218250159 U CN218250159 U CN 218250159U CN 202222056962 U CN202222056962 U CN 202222056962U CN 218250159 U CN218250159 U CN 218250159U
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Abstract
The utility model discloses a promote four qualification rate's of carbon device belongs to n-butane apparatus for producing field. The utility model discloses a buffer tank, buffer tank links to each other with four entrances of mixed carbon, buffer tank still links to each other with pump an and heater a in order, one side of pump a links to each other with one side of four hydrogenators in carbon, the opposite side of four hydrogenators in carbon links to each other with heater h, low pressure separator and heater g in order, one side of heater g links to each other with the side of deisobutanizer, the top of deisobutanizer links to each other with the export of dry gas, the bottom of deisobutanizer links to each other with one side of five towers of decarbonization through pump d, the opposite side of five towers of decarbonization links to each other with the export of normal butane, the bottom of five towers of decarbonization links to each other with pump e, heater c and five exports of carbon in order. The utility model discloses set up four detectors of carbon and pipeline b, make unqualified carbon quadruple get into the buffer tank or take off the isobutane tower through pipeline b again, realize carbon four's heavy smelting, promoted the qualification rate.
Description
Technical Field
The utility model belongs to n butane apparatus for producing field especially relates to a promote device of four qualification rates of carbon.
Background
N-butane: colorless gas, with a slightly unpleasant odor. Insoluble in water, soluble in alcohol and chloroform. Is inflammable and explosive. The 2008 national ministry of health approves the used processing aid for food industry. Can be used as solvent, refrigerant and organic synthetic raw material. The oil field gas, the wet natural gas and the cracked gas contain normal butane and are obtained by separation. N-butane is used as a solvent, a refrigerant and a raw material for organic synthesis, in addition to being directly used as a fuel. The normal butane is dehydrogenated in the presence of a catalyst to generate butylene or butadiene, the butylene or butadiene is isomerized into isobutane in the presence of sulfuric acid or anhydrous hydrofluoric acid, the isobutane is catalytically dehydrogenated to generate isobutene, and the isobutane can be used as a alkylating agent to react with olefin to generate branched-chain hydrocarbon with good antiknock performance. The butane can be made into maleic anhydride, acetic acid and acetaldehyde through catalytic oxidation; halogenated butane can be prepared by halogenation; nitrobutane can be obtained by nitration; catalyzing at high temperature to prepare carbon disulfide; hydrogen can be prepared by steam conversion. In addition, butane can be used as a motor fuel blend to control volatiles; can also be used as a deasphalting agent for refining heavy oil; wax precipitating agents in oil wells; overflow agents for secondary oil recovery, resin blowing agents, refrigerants for converting seawater into fresh water, and olefin polymerization solvents, etc.
The separation process of the n-butane is accompanied by carbon four, the high-purity carbon four is generally recycled, and the high-purity carbon four cannot be separated and obtained in the conventional n-butane production device.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that prior art exists, the utility model provides a promote four qualification rates of carbon's device obtains high-purity carbon four when the device can separate the n-butane.
The utility model provides a promote device of four qualification rates of carbon, including the buffer tank, buffer tank one side links to each other with the four entry of mixed carbon, the opposite side of buffer tank links to each other with pump an and heater a in order, pump a with pipeline between the heater a passes through pipeline a and links to each other with the hydrogen entry, heater a keeps away from one side of pump a links to each other with one side of four hydrogenation ware of carbon, the opposite side of four hydrogenation ware of carbon links to each other with heater h, low pressure separator and heater g in order, one side of keeping away from of heater g the low pressure separator links to each other with the side of deisobutanizer, the top of deisobutanizer links to each other with the dry gas export, the bottom of deisobutanizer links to each other with one side of five towers through pump d, the opposite side of five towers of decarbonization links to each other with the normal butane export, the bottom of five towers links to each other with pump e, heater c and five carbon export in order, five towers with be equipped with four purity detector on the pipeline between the normal butane export, five normal butane towers of decarbonization towers with the pipeline between the export pass through pipeline b with the four entry of mixed carbon links to each other;
and a pipeline between the low-pressure separator and the heater g is connected with the pipeline b.
Further, the top of the low-pressure separator is connected with a liquid separation tank and a hydrogen compressor in sequence, and the hydrogen compressor is also connected with the pipeline a.
Further, a gas-liquid separation tank at the top of the deisobutanizer, a heater d, a reflux tank at the top of the deisobutanizer and an air cooler at the top of the deisobutanizer are sequentially arranged on a pipeline between the dry gas outlet and the top of the deisobutanizer from the dry gas outlet to the top of the deisobutanizer.
Further, the reflux tank at the top of the deisobutanizer is also connected with one side of a pump b, the other side of the pump b is connected with one side of a heater e, and the other side of the heater e is connected with a pipeline between the deisobutanizer and the pump d.
Further, a pipe between the pump b and the heater e is connected with the side of the deisobutanizer.
Further, the bottom of the deisobutanizer is also connected with one side of a heater f, and the other side of the heater f is connected with the side of the deisobutanizer.
Furthermore, a pipeline between the five decarburization towers and the n-butane outlet is sequentially connected with a pump c, a five decarburization tower top reflux tank and a five decarburization tower top air cooler, and one side of the five decarburization tower top air cooler, which is far away from the five decarburization tower top reflux tank, is connected with the top of the five decarburization tower.
Further, a pipeline between the five decarburization towers and the five decarburization tower top air cooler is also connected with the five decarburization tower top reflux tank.
Further, the bottom of the five decarburization towers is also connected with one side of a heater d, and the other side of the heater d is connected with the side face of the five decarburization towers.
Has the advantages that:
the utility model discloses set up four detectors of carbon and pipeline b, make unqualified carbon four times again through pipeline b entering buffer tank or deisobutanizer, realize carbon four's heavy smelting, promote the purity of carbon four and be the qualification rate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Wherein:
fig. 1 is a schematic structural diagram of an apparatus according to an embodiment.
In the figure, 1, a carbon four hydrogenator; 2. a heater a; 3. a hydrogen compressor; 4. liquid separating tank; 5. a hydrogen inlet; 6. a dry gas outlet; 7. an isobutane removing tower top air cooler; 8. a gas-liquid separation tank at the top of the deisobutanizer; 9. a heater b; 10. a reflux tank at the top of the deisobutanizer; 11. a fifth decarburization tower; 12. an air cooler at the top of the decarbonization five tower; 13. a five-tower top reflux tank for decarburization; 14. a pump c; 15. n-butane outlet; 16. a fifth carbon outlet; 17. a heater c; 18. a pump e; 19. a heater d; 20. a pump b; 21. a pump d; 22. a heater e; 23. an isobutane removal tower; 24. a heater f; 25. a heater g; 26. a low pressure separator; 27. a heater h; 28. a pump a; 29. a mixed carbon four inlet; 30. and a buffer tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a device for increasing the four-carbon yield, including a buffer tank 30, one side of the buffer tank 30 is connected to a four-carbon inlet 29, the other side of the buffer tank 30 is connected to a pump a28 and a heater a2 in sequence, a pipeline between the pump a28 and the heater a2 is connected to a hydrogen inlet 5 through a pipeline a31, one side of the heater a2 away from the pump a28 is connected to one side of a four-carbon hydrogenator 1, the other side of the four-carbon hydrogenator 1 is connected to a heater h27, a low-pressure separator 26 and a heater g25 in sequence, one side of the heater g25 away from the low-pressure separator 26 is connected to a side of a deisobutanizer 23, the top of the deisobutanizer 23 is connected to a dry gas outlet 6, the bottom of the deisobutanizer 23 is connected to one side of a five-n-butane outlet 15 through a pump d21, the other side of the five-n-butane outlet 15 is connected to a n-butane outlet 15, the bottom of the decarbonizer 11 is connected to a pump e-butane outlet 16 in sequence, and a normal-butane outlet 32 is connected to a four-carbon inlet 29, and a four-carbon inlet 32 are connected to a decarburization detector 30;
a line between the low pressure separator 26 and the heater g25 is connected to the line b 32.
In a specific embodiment, the top of the low pressure separator 26 is connected to the knockout drum 4 and the hydrogen compressor 3 in sequence, and the hydrogen compressor 3 is also connected to the pipe a 31.
In a specific embodiment, a de-isobutanizer overhead gas-liquid separation tank, a heater d9, a de-isobutanizer overhead reflux tank and a de-isobutanizer overhead air cooler are sequentially arranged on a pipeline between the dry gas outlet 6 and the top of the de-isobutanizer 23 from the dry gas outlet 6 to the top of the de-isobutanizer 23.
In a specific embodiment, the deisobutanizer overhead reflux tank is further connected with one side of a pump b14, the other side of the pump b14 is connected with one side of a heater e22, and the other side of the heater e22 is connected with a pipeline between the deisobutanizer 23 and the pump d 21.
In a specific embodiment, the piping between the pump b20 and the heater e22 is connected to the side of the deisobutanizer 23.
In a specific embodiment, the bottom of the deisobutanizer 23 is further connected to one side of a heater f24, and the other side of the heater f24 is connected to the side of the deisobutanizer 23.
In a specific embodiment, the line between the five decarbonization column 11 and the n-butane outlet 15 is also connected in succession to a pump c14, a five decarbonization overhead reflux drum and a five decarbonization overhead air cooler, the side of which remote from the five decarbonization overhead reflux drum is connected to the top of the five decarbonization column 11.
In a particular embodiment, the line between the five decarbonization columns 11 and the five decarbonization overhead air cooler is also connected to the five decarbonization overhead reflux drum.
In one embodiment, the bottom of the five decarburization towers 11 is also connected to one side of a heater d19, and the other side of the heater d19 is connected to the side of the five decarburization towers 11.
Example 1
Principle of
The crude mixed carbon four enters a raw material buffer tank 30 through a delivery pump, is mixed with hydrogen through a pump a28, enters a carbon four hydrotreater 1, sulfur in the mixed carbon four is removed under the action of 310 ℃, the reaction effluent enters a low-pressure separator 26, the gas phase is hydrogen sulfide gas, and the liquid phase is hydrofined mixed carbon four.
Procedure
The crude mixed carbon four enters a raw material buffer tank 30 through a delivery pump, is mixed with hydrogen through a pump a28, enters a carbon four hydrogenation device 1, sulfur in the mixed carbon four is removed under the action of 310 ℃, reaction effluent enters a low-pressure separator 26, gas phase is hydrogen sulfide gas, and liquid phase is hydrofining mixed carbon four. Heating the refined mixture, then feeding the heated refined mixture into a 45-layer deisobutanizer 23, heating the heated refined mixture to 80 ℃ under the action of a reboiler at the bottom of the tower, cooling the heated refined mixture by a top air cooler 12 of the deisobutanizer, feeding the heated refined mixture into a reflux tank 10 at the top of the deisobutanizer, performing gas-liquid separation in the reflux tank, pumping a liquid phase which is coarse isobutane into a liquid-removing system, feeding the gas phase which is dry gas into a gas-liquid separation tank 8 at the top of the deisobutanizer, and feeding the dry gas into a dry-removing system; the liquid phase is a mixture of carbon five and n-butane, enters a 54-layer of a five-tower decarburization 11, is heated to 100 ℃ under the action of a reboiler at the tower bottom, and the gas phase is n-butane, is cooled by an air cooler 12 at the top of the five-tower decarburization, enters a five-tower top reflux tank 13, is subjected to gas-liquid separation in the tank, is sent to a torch without condensing steam, and is sent to a maleic anhydride device.
Object(s) to
And (3) small circulation: the small circulation refers to a line between the pump c14 and the heater g 25. And if the purity of the normal butane is low after the analysis, starting a small circulation line, separating and purifying the coarse normal butane again, and separating coarse isobutane and carbon five to obtain the high-purity normal butane.
And (3) large circulation: the large circulation refers to a line from the pump c14 to the buffer tank 30. And if the sulfur content of the n-butane is high after the test analysis, starting a large circulation line, and hydrofining the n-butane with high sulfur content again to obtain the refined n-butane with the sulfur content meeting the production requirement.
Claims (9)
1. The device for improving the qualification rate of the carbon four is characterized by comprising a buffer tank (30), wherein one side of the buffer tank (30) is connected with a mixed carbon four inlet (29), the other side of the buffer tank (30) is sequentially connected with a pump a (28) and a heater a (2), a pipeline between the pump a (28) and the heater a (2) is connected with a hydrogen inlet (5) through a pipeline a (31), one side of the heater a (2) far away from the pump a (28) is connected with one side of a carbon four-hydrogenation device (1), the other side of the carbon four-hydrogenation device (1) is sequentially connected with a heater h (27), a low-pressure separator (26) and a heater g (25), one side of the heater g (25) far away from the low-pressure separator (26) is connected with the side of an isobutane removing tower (23), the top of the isobutane removing tower (23) is connected with a dry gas outlet (6), the bottom of the isobutane removing tower (23) is connected with one side of a five-n-butane removing tower (11) through a pump d (21), the top of the isobutane removing tower (23) is connected with a dry gas outlet, a carbon outlet is connected with a decarbonizing tower (11), a five-carbon outlet (15) is connected with a decarbonizing tower (15), and a five-carbon outlet (15) is connected with a pipeline c) and a five-carbon detector (17) is arranged on the bottom of the decarbonizing tower (15), the pipeline between the five decarburization towers (11) and the n-butane outlet (15) is connected with the pipeline between the mixed carbon four inlet (29) and the buffer tank (30) through a pipeline b (32);
the line between the low-pressure separator (26) and the heater g (25) is connected to the line b (32).
2. The device for improving the carbon four yield according to claim 1, wherein the top of the low-pressure separator (26) is sequentially connected with a liquid separation tank (4) and a hydrogen compressor (3), and the hydrogen compressor (3) is further connected with the pipeline a (31).
3. The device for improving the qualification rate of C4 according to claim 1, wherein a de-isobutanizer overhead gas-liquid separation tank (7), a heater b (9), a de-isobutanizer overhead reflux tank (10) and a de-isobutanizer overhead air cooler (8) are sequentially arranged on a pipeline between the dry gas outlet (6) and the top of the de-isobutanizer (23) from the dry gas outlet (6) to the top of the de-isobutanizer (23).
4. A device for increasing the carbon four pass rate according to claim 3, wherein the deisobutanizer overhead reflux drum (10) is further connected with one side of a pump b (20), the other side of the pump b (20) is connected with one side of a heater e (22), and the other side of the heater e (22) is connected with a pipeline between the deisobutanizer (23) and the pump d (21).
5. An apparatus for increasing the carbon four pass rate according to claim 4, wherein the pipe between the pump b (20) and the heater e (22) is connected to the side of the deisobutanizer (23).
6. The device for improving the four-carbon yield according to the claim 1, characterized in that the bottom of the deisobutanizer (23) is also connected with one side of a heater f (24), and the other side of the heater f (24) is connected with the side of the deisobutanizer (23).
7. An apparatus for increasing the carbon four pass percentage according to claim 1, characterized in that the piping between the five decarbonation column (11) and the n-butane outlet (15) is further connected in series with a pump c (14), a five decarbonation column overhead reflux drum (13) and a five decarbonation column overhead air cooler (12), the side of the five decarbonation column overhead air cooler (12) remote from the five decarbonation column overhead reflux drum (13) being connected to the top of the five decarbonation column (11).
8. An apparatus for increasing the carbon four pass percentage according to claim 7, characterized in that the conduit between the five decarbonising tower (11) and the five decarbonising overhead air cooler (12) is also connected to the five decarbonising overhead reflux drum (13).
9. The apparatus for increasing the carbon four pass rate according to claim 1, wherein the bottom of the five decarburization towers (11) is further connected to one side of a heater d (19), and the other side of the heater d (19) is connected to the side of the five decarburization towers (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222056962.1U CN218250159U (en) | 2022-08-05 | 2022-08-05 | Device for improving four-carbon qualification rate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222056962.1U CN218250159U (en) | 2022-08-05 | 2022-08-05 | Device for improving four-carbon qualification rate |
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| Publication Number | Publication Date |
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| CN218250159U true CN218250159U (en) | 2023-01-10 |
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| CN202222056962.1U Active CN218250159U (en) | 2022-08-05 | 2022-08-05 | Device for improving four-carbon qualification rate |
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- 2022-08-05 CN CN202222056962.1U patent/CN218250159U/en active Active
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