CN212669213U

CN212669213U - Needle coke hydrogen production and hydrogenation linkage energy-saving device

Info

Publication number: CN212669213U
Application number: CN202021622987.8U
Authority: CN
Inventors: 王永; 纪强胜; 王洋洋; 毛全邦; 张珊珊; 卢海涛; 张燕燕
Original assignee: Shandong Jingyang Science And Technology Co ltd
Current assignee: Shandong Jingyang Science And Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-03-09
Anticipated expiration: 2030-08-06

Abstract

The utility model belongs to the technical field of needle coke production, concretely relates to needle coke hydrogen manufacturing hydrogenation linkage economizer, methyl alcohol head tank and demineralized water jar all are connected with the blending tank, the blending tank is connected with the reactor through the vaporization over heater, the reactor in proper order with the condenser, clarifier and pressure swing adsorption system are connected, pressure swing adsorption system hydrogen export is connected with hydrogenation equipment through the hydrogen compressor, heat conduction oil pipe line is in proper order pressed from both sides the cover through the vaporization over heater, the reactor presss from both sides the cover and forms the return circuit behind heating furnace, methyl alcohol head tank exit is equipped with methyl alcohol motorised valve and the manual valve of methyl alcohol, demineralized water jar exit is equipped with manual motorised valve of demineralized water and demineralized water valve, heat conduction oil pipe is last to be equipped with temperature sensor and to lead the oil pump, hydrogen. The utility model discloses a set up motorised valve and manual valve and carry out the accurate regulation of secondary to raw materials feeding volume, reach minimum feeding volume, adjust the heating furnace temperature simultaneously and make hydrogen plant can carry out the low-load operation, energy saving and consumption reduction.

Description

Needle coke hydrogen production and hydrogenation linkage energy-saving device

Technical Field

The utility model belongs to the technical field of needle coke production, concretely relates to needle coke hydrogen production hydrogenation linkage economizer.

Background

The needle coke hydrogenation device mixes the aromatic oil and the hydrogen and then carries out hydrogenation treatment, when the hydrogenation device reduces the amount, the hydrogen required by the hydrogen compressor is reduced, and the hydrogen production device can not use the produced hydrogen more than the hydrogenation device under the condition of not reducing the amount, and can convey redundant hydrogen to a torch, so that a great deal of waste can be caused to raw materials and energy consumption when the hydrogen production device does not reduce the amount.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the needle coke hydrogen production and hydrogenation linkage energy-saving device is provided, so that the hydrogen production device operates at low load, energy is saved, and consumption is reduced when the hydrogen amount required by the hydrogenation device is reduced.

The utility model discloses an adopt following technical scheme to realize:

the needle coke hydrogen production and hydrogenation linkage energy-saving device comprises a hydrogen production device and a hydrogenation device, wherein the hydrogen production device comprises a methanol raw material tank and a desalted water tank, the methanol raw material tank and the desalted water tank are both connected with a mixing tank, the mixing tank is connected with the reactor through a vaporization superheater, the reactor is sequentially connected with a condenser, a purifier and a pressure swing adsorption system, a hydrogen outlet of the pressure swing adsorption system is connected with a hydrogenation device through a hydrogen compressor, the vaporization superheater and the reactor are both provided with jackets, a heat conducting oil pipeline sequentially passes through the vaporization superheater jacket, the reactor jacket and the heating furnace to form a loop, a methanol electric valve and a methanol manual valve are arranged at the outlet of the methanol raw material tank, a desalted water electric valve and a desalted water manual valve are arranged at the outlet of the desalted water tank, the hydrogen compressor is characterized in that a temperature sensor and an oil guide pump are arranged on the heat conduction oil pipe line, and a pressure sensor is arranged at the outlet of the hydrogen compressor.

And a heat exchanger is arranged between the reactor and the condenser, and the heat exchanger is also connected with the mixing tank and the vaporization superheater.

The methanol electric valve, the desalted water electric valve, the temperature sensor, the heating furnace and the pressure sensor are electrically connected, and full-automatic control can be realized through a control system.

The working principle and the process are as follows:

during normal production, methanol and desalted water are pumped into a mixing tank to be mixed, then the mixture enters a vaporization superheater, a mixture of the methanol and water vapor is formed after heating, then the mixture enters a reactor and reacts under the action of a catalyst to obtain converted gas, the converted gas is subjected to condensation, purification and pressure swing adsorption treatment to obtain product hydrogen, and the obtained hydrogen is conveyed to a hydrogenation device through a hydrogen compressor; when the amount of hydrogen is reduced by the hydrogenation device and the required hydrogen amount is reduced, the electric methanol valve and the electric desalted water valve are controlled to reduce the feeding amount, manual secondary adjustment can be performed through the manual methanol valve and the manual desalted water valve, so that the feeding amount can reach the minimum value, and meanwhile, the temperature of the heating furnace is adjusted according to the temperature sensor on the heat conduction oil pipe line, so that the vaporization superheater and the reactor are controlled to reach the required temperature, the hydrogen production device is controlled to operate at low load, and the purposes of saving energy and reducing consumption are achieved.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a set up motorised valve and manual valve and carry out the accurate regulation of secondary to raw materials feeding volume, reach minimum feeding volume, adjust the heating furnace temperature simultaneously and make hydrogen plant can carry out the low-load operation, energy saving and consumption reduction.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. a methanol feed tank; 2. a desalted water tank; 3. a methanol electric valve; 4. a methanol manual valve; 5. a desalted water electric valve; 6. a manual valve for desalted water; 7. a mixing tank; 8. a heat exchanger; 9. a reactor; 10. a vaporization superheater; 11. an oil guide pump; 12. a temperature sensor; 13. a thermally conductive oil line; 14. heating furnace; 15. a condenser; 16. a purifier; 17. a pressure swing adsorption system; 18. A hydrogen compressor; 19. a pressure sensor; 20. a hydrogenation device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, the needle coke hydrogen production and hydrogenation linkage energy-saving device comprises a hydrogen production device and a hydrogenation device 20, the hydrogen production device comprises a methanol raw material tank 1 and a desalted water tank 2, the methanol raw material tank 1 and the desalted water tank 2 are both connected with a mixing tank 7, the mixing tank 7 is connected with a reactor 9 through a vaporization superheater 10, the reactor 9 is sequentially connected with a condenser 15, a purifier 16 and a pressure swing adsorption system 17, a hydrogen outlet of the pressure swing adsorption system 17 is connected with the hydrogenation device 20 through a hydrogen compressor 18, the vaporization superheater 10 and the reactor 9 are both provided with jackets, a heat conducting oil pipeline 13 sequentially passes through the jacket of the vaporization superheater 10, the jacket of the reactor 9 and a heating furnace 14 to form a loop, an electric methanol valve 3 and a manual methanol valve 4 are arranged at an outlet of the methanol raw material tank 1, an electric desalted water valve 5 and a manual desalted water valve 6 are arranged at an outlet of the, the heat conducting oil pipeline 13 is provided with a temperature sensor 12 and an oil guide pump 11, and the outlet of the hydrogen compressor 18 is provided with a pressure sensor 19.

A heat exchanger 8 is arranged between the reactor 9 and the condenser 15, and the heat exchanger 8 is also connected with a mixing tank 7 and a vaporization superheater 10.

The methanol electric valve 3, the desalted water electric valve 5, the temperature sensor 12, the heating furnace 14 and the pressure sensor 19 are electrically connected and controlled by a DCS control system.

During normal production, methanol and desalted water are respectively pumped into a mixing tank 7 from a methanol raw material tank 1 and a desalted water tank 2, are mixed, enter a vaporization superheater 10 after heat exchange through a heat exchanger 8, are heated to form a mixture of methanol and water vapor, then enter a reactor 9, react under the action of a catalyst to obtain converted gas, the converted gas is treated by the heat exchanger 8, a condenser 15, a purifier 16 and a pressure swing adsorption system 17 to obtain product hydrogen, and the obtained hydrogen is conveyed to a hydrogenation device 20 through a hydrogen compressor 18; when the amount of hydrogen is reduced and the amount of required hydrogen is reduced, the electric methanol valve 3 and the electric desalted water valve 5 are controlled to reduce the feeding amount, manual secondary adjustment can be performed through the manual methanol valve 4 and the manual desalted water valve 6, so that the feeding amount can reach the minimum value, and meanwhile, the temperature of the heating furnace 14 is adjusted according to the temperature sensor 12 on the heat conducting oil pipeline 13, so that the vaporization superheater 10 and the reactor 9 are controlled to reach the required temperature, the hydrogen production device is controlled to operate at low load, and the purposes of saving energy and reducing consumption are achieved.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims

1. The utility model provides a needle coke hydrogen production hydrogenation linkage economizer, includes hydrogen plant and hydrogenation unit (20), its characterized in that: the hydrogen production device comprises a methanol raw material tank (1) and a desalted water tank (2), wherein the methanol raw material tank (1) and the desalted water tank (2) are both connected with a mixing tank (7), the mixing tank (7) is connected with a reactor (9) through a vaporization superheater (10), the reactor (9) is sequentially connected with a condenser (15), a purifier (16) and a pressure swing adsorption system (17), a hydrogen outlet of the pressure swing adsorption system (17) is connected with a hydrogenation device (20) through a hydrogen compressor (18), the vaporization superheater (10) and the reactor (9) are both provided with jackets, a heat conducting oil pipeline (13) sequentially passes through the jacket of the vaporization superheater (10), the jacket of the reactor (9) and a heating furnace (14) to form a loop, a methanol electric valve (3) and a methanol manual valve (4) are arranged at an outlet of the methanol raw material tank (1), and an electric desalted water valve (5) and a desalted water manual valve (6) are arranged at an outlet of the desalted water tank (2), and a temperature sensor (12) and an oil guide pump (11) are arranged on the heat conduction oil pipeline (13), and a pressure sensor (19) is arranged at the outlet of the hydrogen compressor (18).

2. The needle coke hydrogen production and hydrogenation linkage energy-saving device according to claim 1, characterized in that: a heat exchanger (8) is arranged between the reactor (9) and the condenser (15), and the heat exchanger (8) is also connected with a mixing tank (7) and a vaporization superheater (10).

3. The needle coke hydrogen production and hydrogenation linkage energy-saving device according to claim 1, characterized in that: the methanol electric valve (3), the desalted water electric valve (5), the temperature sensor (12), the heating furnace (14) and the pressure sensor (19) are electrically connected.