CN219615212U - Ethylbenzene dehydrogenation reaction tail gas adsorption treatment system - Google Patents
Ethylbenzene dehydrogenation reaction tail gas adsorption treatment system Download PDFInfo
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- CN219615212U CN219615212U CN202320362216.7U CN202320362216U CN219615212U CN 219615212 U CN219615212 U CN 219615212U CN 202320362216 U CN202320362216 U CN 202320362216U CN 219615212 U CN219615212 U CN 219615212U
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Abstract
The utility model discloses an ethylbenzene dehydrogenation tail gas adsorption treatment system which comprises a gas-liquid separation tank, an adsorption tank connected with the gas-liquid separation tank through a pipeline, a compressor connected with the adsorption tank through a pipeline, a heat exchanger connected with the compressor through a pipeline, a molecular sieve tower connected with the heat exchanger through a pipeline, and a storage tank connected with the molecular sieve tower through a pipeline.
Description
Technical Field
The utility model relates to the technical field of styrene, in particular to an ethylbenzene dehydrogenation reaction tail gas adsorption treatment system.
Background
The industrial production of styrene is to take benzene and ethylene as raw materials to carry out alkylation reaction under a certain condition to generate ethylbenzene, then to mix ethylbenzene and steam according to a certain proportion, to dehydrogenate under a certain condition, to separate oil from water after the dehydrogenation product is cooled to extract styrene, and at present, a compressor is needed to treat tail gas in the tail gas treatment process for preparing styrene by dehydrogenation of ethylbenzene. Because in the production process of preparing styrene by ethylbenzene dehydrogenation, the tail gas generated by the process is a mixture with unseparated gas and liquid, if the mixture containing liquid directly enters the compressor, the working load of the compressor can be increased, meanwhile, after the tail gas containing styrene liquid enters the compressor, polymerization reaction can be carried out in the compressor or in a tail gas transmission pipeline, so that a pipeline is blocked, the dehydrogenation tail gas cannot be timely discharged to cause potential safety hazards, and polymers generated after the polymerization of styrene can further corrode and damage equipment, the treatment efficiency of the dehydrogenation tail gas is influenced, and the treatment effect of the ethylbenzene dehydrogenation tail gas is reduced.
Disclosure of Invention
In view of the above, the present utility model provides an adsorption treatment system for tail gas of ethylbenzene dehydrogenation reaction to solve the above-mentioned problems.
The technical scheme adopted for solving the technical problems is as follows:
the ethylbenzene dehydrogenation reaction tail gas adsorption treatment system comprises a gas-liquid separation tank, an adsorption tank connected with the gas-liquid separation tank through a pipeline, a compressor connected with the adsorption tank through a pipeline, a heat exchanger connected with the compressor through a pipeline, a molecular sieve tower connected with the heat exchanger through a pipeline, and a storage tank connected with the molecular sieve tower through a pipeline.
Further, a conveying pipe is connected to the side wall of the gas-liquid separation tank, an exhaust pipe is connected to the top of the gas-liquid separation tank, a liquid discharge pipe is connected to the bottom of the side wall of the gas-liquid separation tank, the conveying pipe, the exhaust pipe and the liquid discharge pipe are all communicated with the inner cavity of the gas-liquid separation tank, one end of the exhaust pipe is connected with the adsorption tank, and one end of the liquid discharge pipe is connected with a liquid storage tank.
Further, the inside of gas-liquid separation jar is provided with a plurality of separation board groups, a plurality of separation board groups are crisscross setting each other and every two interval between the separation board group equals, the separation board group is including fixed setting up the separation board on the inside lateral wall of gas-liquid separation jar and set up the baffle of separation board one side, the baffle with separation board fixed connection or integrated into one piece just the baffle with separation board mutually perpendicular sets up, a plurality of bleeder vents have evenly been seted up on the surface of separation board.
Further, the inside of gas-liquid separation jar still installs the silk screen foam remover, the silk screen foam remover sets up the inner chamber top of gas-liquid separation jar, the separation board group is located the below of silk screen foam remover.
Further, the bottom of the adsorption tank is connected with an air inlet pipe, one end of the air inlet pipe is connected with the exhaust pipe at the top of the gas-liquid separation tank, the top of the adsorption tank is connected with an air outlet pipe, and one end of the air outlet pipe is connected with the compressor.
Further, the inside of the adsorption tank is provided with a containing cavity, and the air inlet pipe and the air outlet pipe are communicated with the containing cavity.
Further, a plurality of adsorption components are uniformly arranged in the accommodating cavity, and the adsorption components are arranged in parallel and have equal intervals.
Further, the adsorption component comprises a mounting frame arranged in the accommodating cavity, an adsorption plate arranged on the mounting frame, and a plurality of desiccant filling layers filled in the adsorption plate, wherein the mounting frame is of an annular structure, a mounting groove is formed in the mounting frame, and the edge of the adsorption plate is embedded in the mounting groove.
Further, a plurality of bulges protruding outwards are arranged on the surface of the adsorption plate, filling cavities are formed in the bulges, the number of the filling cavities is consistent with that of the drying agent filling layers and corresponds to that of the drying agent filling layers one by one, and the drying agent filling layers are filled in the filling cavities.
Further, an accommodating cavity is further formed in the adsorption plate, and the accommodating cavity is communicated with the filling cavity.
The beneficial effects of the utility model are as follows:
the utility model provides an ethylbenzene dehydrogenation reaction tail gas adsorption treatment system which comprises a gas-liquid separation tank for carrying out gas-liquid separation on ethylbenzene dehydrogenation tail gas, an adsorption tank connected with the gas-liquid separation tank through a pipeline for carrying out adsorption drying on ethylbenzene dehydrogenation tail gas and removing organic matters, a compressor connected with the adsorption tank through a pipeline for compressing the dried ethylbenzene dehydrogenation tail gas, a heat exchanger connected with the compressor through a pipeline for cooling the compressed ethylbenzene dehydrogenation tail gas, a molecular sieve tower connected with the heat exchanger through a pipeline for adsorbing hydrogen in the cooled ethylbenzene dehydrogenation tail gas, and a storage tank connected with the molecular sieve tower through a pipeline for storing hydrogen, wherein the ethylbenzene dehydrogenation tail gas generated by a production system for preparing styrene through ethylbenzene dehydrogenation is conveyed into the gas-liquid separation tank through a pipeline for carrying out gas-liquid separation, the tail gas obtained after gas-liquid separation enters the adsorption tank for drying adsorption, the tail gas after drying adsorption is conveyed into the heat exchanger for cooling after being compressed and pressurized by the compressor, the tail gas after cooling is conveyed into the molecular sieve tower for adsorption treatment, and the hydrogen obtained through the adsorption treatment is conveyed into the storage tank through the pipeline and quantitatively conveyed into the storage tank for storing hydrogen in the hydrogen storage tank, thereby the hydrogen dehydrogenation tail gas can be effectively prevented from entering the hydrogen absorption section of the hydrogen dehydrogenation system, and the hydrogen in the hydrogen absorption system can be effectively prevented from being influenced, and the hydrogen in the hydrogen dehydrogenation reaction system can be effectively removed, and the hydrogen in the hydrogen absorption system can be effectively prevented from being absorbed and the hydrogen in the hydrogen absorption section is not used for the hydrogen absorption system.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the tail gas adsorption treatment system for ethylbenzene dehydrogenation according to the present utility model;
FIG. 2 is a cross-sectional view of a gas-liquid separation tank in the ethylbenzene dehydrogenation tail gas adsorption treatment system of the present utility model shown in FIG. 1;
FIG. 3 is a top view of the separator plate pack in the gas-liquid separator tank of FIG. 2;
FIG. 4 is a cross-sectional view of an adsorption tank in the ethylbenzene dehydrogenation tail gas adsorption treatment system of the present utility model shown in FIG. 1;
fig. 5 is a cross-sectional view of the adsorption module in the adsorption tank shown in fig. 4.
In the figure: 100. the ethylbenzene dehydrogenation reaction tail gas adsorption treatment system comprises 1, a gas-liquid separation tank, 11, an exhaust pipe, 12, a liquid discharge pipe, 13, a separation plate group, 131, a separation plate, 1311, ventilation holes, 132, a baffle plate, 14, a silk screen foam remover, 2, an adsorption tank, 21, an air inlet pipe, 22, an air outlet pipe, 23, a containing cavity, 24, an adsorption component, 241, a mounting rack, 242, an adsorption plate, 2421, a bulge, 2422, a filling cavity, 2423, a containing cavity, 243, a desiccant filling layer, 3, a compressor, 4, a heat exchanger, 5, a molecular sieve tower, 6 and a storage tank.
Detailed Description
The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.
As shown in fig. 1, the utility model provides an ethylbenzene dehydrogenation reaction tail gas adsorption treatment system 100 for treating ethylbenzene dehydrogenation tail gas to remove liquid and organic matters in the tail gas so as to recycle hydrogen in the ethylbenzene dehydrogenation tail gas, the ethylbenzene dehydrogenation reaction tail gas adsorption treatment system 100 comprises a gas-liquid separation tank 1 for carrying out gas-liquid separation on the ethylbenzene dehydrogenation tail gas, an adsorption tank 2 connected with the gas-liquid separation tank 1 through a pipeline and used for carrying out adsorption drying on the ethylbenzene dehydrogenation tail gas and removing the organic matters, a compressor 3 connected with the adsorption tank 2 through a pipeline and used for compressing the dried ethylbenzene dehydrogenation tail gas, a heat exchanger 4 connected with the compressor 3 through a pipeline and used for cooling the compressed ethylbenzene dehydrogenation tail gas, a molecular sieve tower 5 connected with the heat exchanger 4 through a pipeline and used for adsorbing hydrogen in the cooled ethylbenzene dehydrogenation tail gas, and a storage tank 6 connected with the molecular sieve tower 5 through a pipeline, in this embodiment, the inside of the molecular sieve tower 5 is filled with a silicate or silicate molecular sieve, the produced by dehydrogenation production system is transported into the adsorption tank 1 through a pipeline and then transported into the adsorption tank 2 through a pipeline and then transported into the adsorption tank for carrying out compression to the hydrogen absorption tower 2, and the hydrogen is quantitatively transported into the adsorption tower 4 through a heat exchanger to be cooled, and the adsorption tower is cooled, and the hydrogen is quantitatively transported into the adsorption tower is cooled and then transported into the adsorption tower 2 through the adsorption tower after the adsorption tower is cooled.
As shown in fig. 1, fig. 2 and fig. 3, a side wall of the gas-liquid separation tank 1 is connected with a conveying pipe (not shown) for conveying ethylbenzene dehydrogenation tail gas into the gas-liquid separation tank 1, the top of the gas-liquid separation tank 1 is connected with an exhaust pipe 11 for discharging ethylbenzene dehydrogenation tail gas, the bottom of the side wall of the gas-liquid separation tank 1 is connected with a liquid discharge pipe 12 for discharging separation liquid, the conveying pipe, the exhaust pipe 11 and the liquid discharge pipe 12 are all communicated with an inner cavity of the gas-liquid separation tank 1, one end of the exhaust pipe 11 is connected with the adsorption tank 2, one end of the liquid discharge pipe 12 is connected with a liquid storage tank (not shown), a plurality of separation plate groups 13 for separating liquid in ethylbenzene dehydrogenation tail gas are arranged in the gas-liquid separation tank 1, the separation plate groups 13 are arranged in a staggered manner, the distance between every two separation plate groups 13 is equal, the separation plate groups 13 comprise separation plates 131 fixedly arranged on the inner side wall of the gas-liquid separation tank 1 and baffle plates 132 arranged on one side of the separation plates 131, the baffle plates 132 are fixedly connected with the separation plates 131 or are integrally formed and are mutually perpendicular to the separation plates 131, one end of the separation plates 132 is connected with the separation plates 131, the separation plates 131 are uniformly arranged on the upper surfaces of the separation plates are used for separating ethylbenzene dehydrogenation tail gas through the gas phase separation plates 131 flowing down through the gas phase separation plates 131 under the condition of the separation plates 1, and the separation plates 131 flow down through the separation plates 131 under the condition of the separation plates 1, and flow down through the separation plates 13 are arranged on the bottom surface of the separation plates 13, and flow down through the separation plates 13 are arranged, and flow down through the separation plates 13 are separated by gravity and flow down through the separation plate 1; the inside of the gas-liquid separation tank 1 is also provided with a wire mesh foam remover 14 for further removing liquid phase in gas phase, the wire mesh foam remover 14 is arranged at the top of the inner cavity of the gas-liquid separation tank 1, and the separation plate group 13 is positioned below the wire mesh foam remover 14.
As shown in fig. 1, 4 and 5, the bottom of the adsorption tank 2 is connected with an air inlet pipe 21 for delivering ethylbenzene dehydrogenation tail gas after gas-liquid separation, one end of the air inlet pipe 212 is connected with an air outlet pipe 11 at the top of the gas-liquid separation tank 1, the top of the adsorption tank 2 is connected with an air outlet pipe 22 for discharging ethylbenzene dehydrogenation tail gas after adsorption treatment, one end of the air outlet pipe 22 is connected with a compressor 3, a containing cavity 23 for containing ethylbenzene dehydrogenation tail gas is arranged in the adsorption tank 2, the air inlet pipe 21 and the air outlet pipe 22 are communicated with the containing cavity 23, a plurality of adsorption assemblies 24 are uniformly arranged in the containing cavity 23, the adsorption assemblies 24 are arranged in parallel and have equal intervals, each adsorption assembly 24 comprises an installation frame 241 arranged in the containing cavity 23, an adsorption plate 242 arranged on the installation frame 241 for adsorbing organic matters in the ethylbenzene dehydrogenation tail gas, and a plurality of desiccant filling layers 243 filled in the adsorption plate 242 for further drying ethylbenzene dehydrogenation tail gas, the mounting frame 241 is in a substantially annular structure, a mounting groove (not shown) for mounting the adsorption plate 242 is formed in the mounting frame 241, the edge of the adsorption plate 242 is embedded in the mounting groove, a plurality of protrusions 2421 protruding outwards are arranged on the surface of the adsorption plate 242, filling cavities 2422 are formed in the inner part of each protrusion 2421, the filling cavities 2422 and the desiccant filling layers 243 are consistent in number and correspond to each other one by one, the desiccant filling layers 243 are filled in the filling cavities 2422, a containing cavity 2423 communicated with the filling cavities 2422 is formed in the inner part of the adsorption plate 242, ethylbenzene dehydrogenation tail gas passes through the adsorption plate 242 to enter the containing cavity 242 in the attachment plate 242 and flows into the filling cavities 2422 along the containing cavities 242 to be contacted with the desiccant filling layers 243, the ethylbenzene dehydrogenation tail gas is further dried while the contact area between the ethylbenzene dehydrogenation tail gas and the adsorption plate 242 is increased, so that the adsorption effect of the adsorption plate 242 on organic matters is ensured, in this embodiment, the adsorption plate 242 is made of activated carbon or silica gel, and the desiccant filling layer 243 is made of silica gel or activated alumina.
During the use, ethylbenzene dehydrogenation tail gas is carried to gas-liquid separation jar 1 through the conveyer pipe and carries out gas-liquid separation processing, ethylbenzene dehydrogenation tail gas gets into gas-liquid separation jar 1 and passes a plurality of separation board group 13 and silk screen demister 14 in proper order, when ethylbenzene dehydrogenation tail gas passed through separation board group 13, the gas phase continues to flow through bleeder vent 1311 on the separation board 131, the liquid phase then gathers in the lower surface of separation board 131 and flows downwards under the action of gravity, thereby gather in the bottom of gas-liquid separation jar 1, the gas phase passes silk screen demister 14 again in order to further get rid of the liquid phase, ethylbenzene dehydrogenation tail gas after the gas-liquid separation is carried in adsorption tank 2 through blast pipe 11 and intake pipe 21 and contacts with adsorption module 24, ethylbenzene dehydrogenation tail gas passes through adsorption board 242 and gets into holding chamber 242 in the holding chamber 242 and along holding chamber 242 and flow to contact with drier filling layer 243 in the holding chamber 2422, ethylbenzene dehydrogenation tail gas after the adsorption treatment carries out further drying, ethylbenzene dehydrogenation tail gas is carried out in compressor 3 through outlet duct 22 and compresses, ethylbenzene dehydrogenation tail gas after the compression pipeline carries out hydrogen gas is carried out in the hydrogen gas channel through the dehydrogenation pipeline 4 and carries out the hydrogen production ration sieve section and carries out the hydrogen and the hydrogen and carries out the quantitative reduction system and the hydrogen and pass through the hydrogen absorption sieve section and the hydrogen production and the hydrogen absorption sieve section is carried out the hydrogen production and the hydrogen absorption section is cooled down and the hydrogen production and the hydrogen absorption section is carried out the hydrogen absorption section is carried into the hydrogen absorption section 4 and is passed into the hydrogen absorption section and is cooled to the hydrogen absorption section and is passed into the 5.
The utility model provides an ethylbenzene dehydrogenation reaction tail gas adsorption treatment system 100 which comprises a gas-liquid separation tank 1 for separating gas and liquid of ethylbenzene dehydrogenation tail gas, an adsorption tank 2 connected with the gas-liquid separation tank 1 through a pipeline for adsorbing and drying the ethylbenzene dehydrogenation tail gas and removing organic matters, a compressor 3 connected with the adsorption tank 2 through a pipeline for compressing the dried ethylbenzene dehydrogenation tail gas, a heat exchanger 4 connected with the compressor 3 through a pipeline for cooling the compressed ethylbenzene dehydrogenation tail gas, a molecular sieve tower 5 connected with the heat exchanger 4 through a pipeline for adsorbing hydrogen in the cooled ethylbenzene dehydrogenation tail gas, a storage tank 6 connected with the molecular sieve tower 5 through a pipeline for storing hydrogen, the ethylbenzene dehydrogenation tail gas generated by a production system for preparing styrene through ethylbenzene dehydrogenation is conveyed into the gas-liquid separation tank 1 through a pipeline for gas-liquid separation, the tail gas obtained after gas-liquid separation enters an adsorption tank 2 for drying adsorption, the tail gas after drying adsorption is compressed and pressurized by a compressor 3 and then is conveyed into a heat exchanger 4 for cooling, the tail pressure after cooling is conveyed into a molecular sieve tower 5 for adsorption treatment, and the hydrogen obtained through adsorption treatment is conveyed into a storage tank 6 through a pipeline for storage and quantitatively conveyed into a hydrogenation section in a styrene production system, so that the hydrogen utilization rate is improved, resources are saved, the gas-liquid separation tank 1 and the adsorption tank 2 can effectively remove liquid in the tail gas of ethylbenzene dehydrogenation reaction, the adsorption of organic impurities in the hydrogen is ensured, the adsorption efficiency of the tail gas adsorption treatment system 100 of ethylbenzene dehydrogenation reaction is improved, and the adverse effect caused by the entry of organic matters in the tail gas of ethylbenzene dehydrogenation reaction into the hydrogen is prevented.
While the above description has been made in terms of an ideal embodiment according to the present utility model, it is clear from the foregoing that various changes and modifications can be made by the person skilled in the relevant art without departing from the scope of the utility model, which is not limited to the details of the description, but must be determined from the scope of the claims.
Claims (10)
1. An ethylbenzene dehydrogenation reaction tail gas adsorption treatment system which is characterized in that: the device comprises a gas-liquid separation tank, an adsorption tank connected with the gas-liquid separation tank through a pipeline, a compressor connected with the adsorption tank through a pipeline, a heat exchanger connected with the compressor through a pipeline, a molecular sieve tower connected with the heat exchanger through a pipeline, and a storage tank connected with the molecular sieve tower through a pipeline.
2. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 1, wherein: the gas-liquid separation device is characterized in that a conveying pipe is connected to the side wall of the gas-liquid separation tank, an exhaust pipe is connected to the top of the gas-liquid separation tank, a liquid discharge pipe is connected to the bottom of the side wall of the gas-liquid separation tank, the conveying pipe, the exhaust pipe and the liquid discharge pipe are all communicated with the inner cavity of the gas-liquid separation tank, one end of the exhaust pipe is connected with the adsorption tank, and one end of the liquid discharge pipe is connected with a liquid storage tank.
3. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 1, wherein: the inside of gas-liquid separation jar is provided with a plurality of separation board groups, a plurality of separation board groups are crisscross to set up and every two interval between the separation board group equals, the separation board group is including fixed setting up the separation board on the inside lateral wall of gas-liquid separation jar and set up the baffle of separation board one side, the baffle with separation board fixed connection or integrated into one piece just the baffle with separation board mutually perpendicular sets up, a plurality of bleeder vents have evenly been seted up on the surface of separation board.
4. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 3, wherein: the inside of gas-liquid separation jar still installs the silk screen foam remover, the silk screen foam remover sets up the inner chamber top of gas-liquid separation jar, the separation board group is located the below of silk screen foam remover.
5. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 2, wherein: the bottom of the adsorption tank is connected with an air inlet pipe, one end of the air inlet pipe is connected with the exhaust pipe at the top of the gas-liquid separation tank, the top of the adsorption tank is connected with an air outlet pipe, and one end of the air outlet pipe is connected with the compressor.
6. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 5, wherein: the inside of adsorption tank has seted up and has held the chamber, the intake pipe with the outlet duct all with hold the chamber and be linked together.
7. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 6, wherein: a plurality of adsorption components are uniformly arranged in the accommodating cavity, and the adsorption components are arranged in parallel and have equal intervals.
8. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 7, wherein: the adsorption component comprises a mounting frame arranged in the accommodating cavity, an adsorption plate arranged on the mounting frame, and a plurality of desiccant filling layers filled in the adsorption plate, wherein the mounting frame is of an annular structure, a mounting groove is formed in the mounting frame, and the edge of the adsorption plate is embedded in the mounting groove.
9. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 8, wherein: the surface of the adsorption plate is provided with a plurality of bulges protruding outwards, a filling cavity is formed in the bulges, the number of the filling cavities is consistent with that of the drying agent filling layers and corresponds to that of the drying agent filling layers one by one, and the drying agent filling layers are filled in the filling cavities.
10. The ethylbenzene dehydrogenation reaction tail gas adsorption treatment system according to claim 9, wherein: the inside of adsorption plate has still offered and has held the chamber, hold the chamber with fill the chamber and be linked together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320362216.7U CN219615212U (en) | 2023-02-28 | 2023-02-28 | Ethylbenzene dehydrogenation reaction tail gas adsorption treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320362216.7U CN219615212U (en) | 2023-02-28 | 2023-02-28 | Ethylbenzene dehydrogenation reaction tail gas adsorption treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN219615212U true CN219615212U (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320362216.7U Active CN219615212U (en) | 2023-02-28 | 2023-02-28 | Ethylbenzene dehydrogenation reaction tail gas adsorption treatment system |
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| CN (1) | CN219615212U (en) |
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- 2023-02-28 CN CN202320362216.7U patent/CN219615212U/en active Active
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