CN210176809U - Reaction tower waste gas recycling device - Google Patents
Reaction tower waste gas recycling device Download PDFInfo
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- CN210176809U CN210176809U CN201920962855.0U CN201920962855U CN210176809U CN 210176809 U CN210176809 U CN 210176809U CN 201920962855 U CN201920962855 U CN 201920962855U CN 210176809 U CN210176809 U CN 210176809U
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Abstract
The utility model belongs to the technical field of the chemical industry, concretely relates to reaction tower waste gas recovery utilizes device. Including taking off heavy tower, mixing dehydrogenation device, etherification tower and fuel recovery jar, mix dehydrogenation device and take off through a union coupling between the heavy tower, the well tower that mixes dehydrogenation device is provided with the inlet pipe, is provided with the pump on the inlet pipe, the intersection of a pipe and inlet pipe is provided with the heat exchanger, take off and be connected through No. two pipe connections between heavy tower and the etherification tower, take off heavy tower export and connect gradually a condenser, a reflux drum and fuel recovery jar, the export of etherification tower connects gradually No. two condensers, No. two reflux drums and fuel recovery jar. The utility model discloses a set up the waste that fuel recovery pipe can contain less isobutene in the heavy tower of taking off and the etherification tower and be sent to the fuel recovery jar and then use as the fuel in carrying the system again, avoid the energy.
Description
Technical Field
The utility model belongs to the technical field of the chemical industry, concretely relates to reaction tower waste gas recovery utilizes device.
Background
In a methyl tert-butyl ether (MTBE) production device, a large amount of liquefied gas can be produced by the reaction of a de-heavy tower and an etherification tower, wherein the liquefied gas mainly comprises carbon three, isobutane and carbon four containing isobutene less than 0.2 percent, part of the produced liquefied gas can be returned to the de-heavy tower and the etherification tower from a reflux tank for circulation in the prior art, and most of the rest liquefied gas can cause tower overpressure due to the high carbon three content in the liquefied gas. It needs to absorb a large amount of heats to take place catalytic reaction in the mixed dehydrogenation device, and the raw materials need preheat before getting into mixed dehydrogenation device to mixed dehydrogenation device's output high temperature need cool down and deliver to next unit again, so set up the reboiler before mixing dehydrogenation device among the prior art usually, set up the condenser behind mixed dehydrogenation device, but so both the increase cost can cause the waste of a large amount of energy again.
Disclosure of Invention
An object of the utility model is to provide a reaction tower waste gas recycle device has solved among the prior art and has taken off heavy tower and etherified tower top waste gas and can only go ground torch burning, the system heat does not have recycle's problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a reaction tower waste gas recycle device, is including taking off heavy tower, mixing dehydrogenation device, etherification tower and fuel recovery jar, mix dehydrogenation device and take off through a union coupling between the heavy tower, be provided with the heat exchanger on the pipe, take off through No. two union couplings between heavy tower and the etherification tower, take off the export of heavy tower and connect a condenser and a reflux tank in proper order, No. two condensers and No. two reflux tanks are connected in proper order to the export of etherification tower, the export of a reflux tank takes off the heavy tower through No. five union couplings, connects the fuel recovery jar through the fuel recovery pipe, the export of No. two reflux tanks is through eight union couplings etherification tower, joins the back through No. nine pipes and fuel recovery pipe and is connected the fuel recovery jar.
Further, the middle tower of the mixed dehydrogenation device is provided with a feeding pipe, and the feeding pipe is provided with a pump and is connected with a heat exchanger.
Furthermore, the inlet of the first condenser is connected with the third pipe, the outlet of the first condenser is connected with the fourth pipe, and the inlet of the second condenser is connected with the sixth pipe and the outlet of the second condenser is connected with the seventh pipe.
Further, the lower tower of the hybrid dehydrogenation device is connected with a combustor through a pipeline.
Furthermore, the fifth pipe and the eighth pipe are both provided with pumps.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an export at a backward flow jar sets up the fuel recovery pipe, the export of No. two backward flow jars sets up No. seven pipes and merges into the fuel recovery pipe, can will take off the liquefied gas product after the reaction in heavy tower and the etherification tower and send to the fuel recovery jar after the condensation, send to the heating furnace or the combustor of other devices of system again and use as fuel, the reaction goes on in the catalytic reaction tower, system's fuel recycle has been realized, energy saving, the fuel gas purchase volume has been reduced simultaneously outward, on average, practice thrift four 3000NM of carbon every year3The amount is reduced to 1.05 ten thousand yuan.
The utility model discloses be provided with the heat exchanger in the intersection of inlet pipe and a pipe, can carry out the heat transfer with the recovery heat with low temperature import raw materials from mixed dehydrogenation device tower bottom exhaust high temperature export material, need not set up the reboiler alone before mixing dehydrogenation device and be used for heating import material, also need not set up the condenser behind mixing dehydrogenation device and be used for cooling down export material, the simplification device has also realized the purpose of waste heat utilization, energy saving and fuel.
Drawings
FIG. 1 is a flow chart of a reaction tower waste gas recycling device
The reference numbers in the drawings: the device comprises a heavy component removal tower 1, a pump 2, a mixed dehydrogenation device 3, an etherification tower 4, a condenser 5, a reflux tank 6, a reflux tank 7, a condenser II, a reflux tank II 8, a heat exchanger 9, a fuel recovery tank 10, a burner 11, a feed pipe 12, a pipe 13, a pipe 14, a pipe 15, a pipe 16, a pipe 17, a pipe 18, a pipe 19, a pipe 20, a pipe eight, a pipe 21, a pipe nine, a fuel recovery pipe 22 and a fuel output pipe 23.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
A reaction tower waste gas recycling device comprises a de-weighting tower 1, a mixed dehydrogenation device 3, an etherification tower 4 and a fuel recovery tank 10, wherein the mixed dehydrogenation device 3 is connected with the de-weighting tower 1 through a first pipe 13, a feeding pipe 12 is arranged on a middle tower of the mixed dehydrogenation device 3, a pump 2 is arranged on the feeding pipe 12, a heat exchanger 9 is arranged at the intersection of the first pipe 13 and the feeding pipe 12, and a lower tower of the mixed dehydrogenation device 3 is connected with a combustor 11 through a pipeline; the heavy component removal tower 1 is connected with the etherification tower 4 through a second pipe 14, the outlet of the heavy component removal tower is sequentially connected with a first condenser 5 and a first reflux tank 6, the inlet of the first condenser 5 is connected with a third pipe 15, the outlet of the first reflux tank 6 is connected with a fourth pipe 16, the outlet of the first reflux tank 6 is connected with the heavy component removal tower 1 through a fifth pipe 17, and is connected with the fuel recovery tank 10 through a fuel recovery pipe 22; an outlet of the etherification tower 4 is sequentially connected with a second condenser 7 and a second reflux tank 8, an inlet of the second condenser 7 is connected with a sixth pipe 18, an outlet of the second condenser 7 is connected with a seventh pipe 19, an outlet of the second reflux tank 8 is connected with the etherification tower 4 through an eighth pipe 20, and is connected with the fuel recovery tank 10 through a ninth pipe 21 and a fuel recovery pipe 22; the fifth pipe 17 and the eighth pipe 20 are both provided with a pump 2; the fuel recovery tank 10 is connected to the burner 11 through a fuel outlet pipe 23.
When the mixed dehydrogenation device is used, raw materials are pressurized by the pump 2 through the feeding pipe 12 and enter the mixed dehydrogenation device 3, a tower bottom extract of the mixed dehydrogenation device 3 is sent to the de-heavy tower 1 through the first pipe 13 through the heat exchanger 9 to react, and a high-temperature extract of the mixed dehydrogenation device 3 and a low-temperature raw material exchange heat through the heat exchanger 9 to recover heat; the gas phase at the top of the heavy component removing tower 1 enters a first condenser 5 through a third pipe 15, the condensed product flows into a first reflux tank 6 through a fourth pipe 16, part of the product flowing into the first reflux tank 6 is used as the top reflux and is pressurized by a pump 2 and then returns to the top of the heavy component removing tower 1, part of the product is sent to a fuel recovery tank 10 through a fuel recovery pipe 22, the bottom produced product of the heavy component removing tower 1 is sent to an etherification tower 4 through a second pipe 14 for reaction, the carbon four containing isobutene less than 0.2% at the top of the etherification tower 4 enters a second condenser 7 through a sixth pipe 18, the condensed carbon four flows into a second reflux tank 8 through a seventh pipe 19, part of the product flowing into the second reflux tank 8 is used as the top reflux and is pressurized by the pump 2 and then returns to the top of the etherification tower 4, part of the product flows into the fuel recovery pipe 22 through a ninth pipe 21 and is sent to the fuel recovery tank 10, in the embodiment, part of the fuel source of the fuel in the fuel recovery tank 10 is the liquefied gas discharged from the top of the heavy, part of the fuel in the fuel recovery tank 10 comes from the outside, part of the fuel is sent to the combustor 11 through the fuel delivery pipe 23 to be combusted to generate heat, the generated heat enters the mixed dehydrogenation device 3 through a pipeline to be circulated in the system, and the other part of the fuel is sent to other systems through pipelines to be combusted and circulated.
The utility model discloses an export at a return tank 6 sets up fuel recovery pipe 22, export at No. two return tanks 8 sets up No. nine pipes 21 and incorporates fuel recovery pipe 22, can be with taking off the liquefied gas product after the reaction in heavy tower 1 and the etherification tower 4 and send to fuel recovery tank 10 after the condensation and use as fuel, realized system's fuel recycle, energy saving, reduced fuel gas purchase quantity simultaneously, on average practice thrift four 3000NM of carbon every year31.05 ten thousand yuan; the utility model discloses in a pipe 13 andthe intersection of inlet pipe 12 sets up heat exchanger 9, can be used for heating the low temperature import material with the high temperature export material that comes out from mixing dehydrogenation device 3, neither need set up the reboiler on inlet pipe 12 and be used for heating the raw materials, also need not set up the condenser on a pipe 13 and cool down the high temperature material, has realized retrieving heat, waste heat utilization, has practiced thrift energy and fuel.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the ordinary skilled person in the technical field of the present invention, without departing from the concept of the present application, a plurality of simple deductions or replacements can be made, all of which should be considered as belonging to the protection scope of the present invention.
Claims (5)
1. The utility model provides a reaction tower waste gas recycle device, is including taking off heavy tower (1), mixing dehydrogenation device (3), etherification tower (4) and fuel recovery jar (10), its characterized in that, mix and be connected through a pipe (13) between dehydrogenation device (3) and the heavy tower (1) of taking off, be provided with heat exchanger (9) on a pipe (13), it is connected through No. two pipe (14) between heavy tower (1) and the etherification tower (4) to take off, the export of taking off heavy tower (1) connects gradually a condenser (5) and a reflux drum (6), the export of etherification tower (4) connects gradually No. two condensers (7) and No. two reflux drums (8), the export of a reflux drum (6) is through No. five pipe (17) connection heavy tower (1), is connected fuel recovery jar (10) through fuel recovery pipe (22), the export of No. two reflux drums (8) is through eight pipe (20) connection etherification tower (4), The fuel recovery tank (10) is connected after being converged by a No. nine pipe (21) and a fuel recovery pipe (22).
2. The reaction tower waste gas recycling device as claimed in claim 1, wherein the middle tower of the hybrid dehydrogenation device (3) is provided with a feeding pipe (12), and the feeding pipe (12) is provided with a pump (2) and is connected with the heat exchanger (9).
3. The reaction tower waste gas recycling device as claimed in claim 1, wherein the inlet of the first condenser (5) is connected with a third pipe (15) and the outlet of the first condenser is connected with a fourth pipe (16), and the inlet of the second condenser (7) is connected with a sixth pipe (18) and the outlet of the second condenser is connected with a seventh pipe (19).
4. The recycling device of the waste gas of the reaction tower in the claim 1, characterized in that the lower tower of the hybrid dehydrogenation device (3) is connected with a burner (11) through a pipeline.
5. The waste gas recycling device of the reaction tower as claimed in claim 1, wherein the fifth pipe (17) and the eighth pipe (20) are provided with pumps (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962855.0U CN210176809U (en) | 2019-06-25 | 2019-06-25 | Reaction tower waste gas recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962855.0U CN210176809U (en) | 2019-06-25 | 2019-06-25 | Reaction tower waste gas recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210176809U true CN210176809U (en) | 2020-03-24 |
Family
ID=69838809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920962855.0U Active CN210176809U (en) | 2019-06-25 | 2019-06-25 | Reaction tower waste gas recycling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210176809U (en) |
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2019
- 2019-06-25 CN CN201920962855.0U patent/CN210176809U/en active Active
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