CN214780745U - Raw material mixing device for hydrogen production by cracking - Google Patents
Raw material mixing device for hydrogen production by cracking Download PDFInfo
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- CN214780745U CN214780745U CN202120376720.3U CN202120376720U CN214780745U CN 214780745 U CN214780745 U CN 214780745U CN 202120376720 U CN202120376720 U CN 202120376720U CN 214780745 U CN214780745 U CN 214780745U
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Abstract
The utility model belongs to the technical field of raw material mixing in hydrogen production by methanol cracking, and discloses a raw material mixing device for hydrogen production by methane cracking, which comprises a methanol tank, an ion-free water tank, a first metering pump, a second metering pump, a first flowmeter, a second flowmeter, a mixer, a raw material mixing tank, a reactor and a PLC control system; the entry intercommunication methyl alcohol input pipeline of methyl alcohol jar, the export of methyl alcohol jar passes through the one end intercommunication of pipeline and first measuring pump, and the other end of first measuring pump passes through the one end intercommunication of pipeline and first flowmeter, and the other end of first flowmeter passes through pipeline and blender methyl alcohol entry intercommunication, the signal control end of first measuring pump is connected with the signal input part of first flowmeter. The utility model is used for make deionized water and methyl alcohol misce bene when first split hydrogen manufacturing, through setting up first measuring pump, second measuring pump, first flowmeter and second flowmeter, make deionized water and methyl alcohol proportional output, solve methyl alcohol schizolysis hydrogen manufacturing in-process raw materials and thoughtlessly join in marriage insufficient problem.
Description
Technical Field
The utility model belongs to the technical field of raw materials are thoughtlessly joined in marriage in methyl alcohol schizolysis hydrogen manufacturing, concretely relates to first hydrogen manufacturing raw materials blending device that splits.
Background
In the prior art, in the hydrogen production by methanol cracking, methanol and water are filled into a reactor in a high-temperature state through a metering pump according to a certain proportion, and the water and the methanol react to generate hydrogen, carbon dioxide and the like under the action of a catalyst. However, in the operation process of hydrogen production by methanol cracking, the problems that the catalyst is wrapped by the methanol due to the carbonization in the high-temperature reactor caused by the fault of a metering pump or insufficient mixing of water and methanol, the efficiency of the catalyst is reduced, the service life of the catalyst is prolonged and the like often exist. Therefore, a raw material mixing device for methane cracking hydrogen production needs to be specially designed, so that the raw materials are fully mixed, and hydrogen production and purification are carried out.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a first hydrogen manufacturing raw materials blending device to solve the insufficient problem of compounding of methyl alcohol schizolysis hydrogen manufacturing in-process raw materials.
The utility model discloses a realize above-mentioned purpose, the technical scheme who adopts as follows:
a raw material mixing device for first cracking hydrogen production comprises a methanol tank, a deionized water tank, a first metering pump, a second metering pump, a first flowmeter, a second flowmeter, a mixer, a raw material mixing tank, a reactor and a PLC control system;
the inlet of the methanol tank is communicated with a methanol input pipeline, the outlet of the methanol tank is communicated with one end of a first metering pump through a pipeline, the other end of the first metering pump is communicated with one end of a first flow meter through a pipeline, the other end of the first flow meter is communicated with the methanol inlet of the mixer through a pipeline, and the first flow meter and the first metering pump are respectively connected with a PLC control system;
an inlet of the deionized water tank is communicated with a deionized water input pipeline, an outlet of the deionized water tank is connected with one end of a second metering pump through a pipeline, the other end of the second metering pump is connected with one end of a second flow meter through a pipeline, and the other end of the second flow meter is communicated with a deionized water inlet of the mixer through a pipeline; the second flowmeter and the second metering pump are respectively connected with the PLC control system;
the outlet of the mixer is communicated with the inlet of the raw material mixing tank through a pipeline, and the outlet of the raw material mixing tank is communicated with the inlet of the reactor through a pipeline.
As a limitation, a first program control valve is arranged on the methanol input pipeline, and a first liquid level meter is arranged on the methanol tank; a second program control valve is arranged on the deionized water input pipeline, a second liquid level meter is arranged on the deionized water tank, and a third liquid level meter is arranged on the raw material mixing tank;
and the first program control valve, the first liquid level meter, the second program control valve, the second liquid level meter and the third liquid level meter are respectively connected with the PLC control system.
As a further limitation, a first valve is further arranged on the methanol input pipeline, and the first valve and the first program control valve are arranged in parallel;
and the deionized water input pipeline is also provided with a second valve, and the second valve and the second program control valve are arranged in parallel.
As still further limited, the device also comprises a third metering pump, third to tenth valves; the third metering pump is connected with the PLC control system;
one end of the third metering pump is respectively communicated with the outlet of the methanol tank and the outlet of the deionized water tank through pipelines; the other end of the third metering pump is respectively communicated with the first flowmeter and the second flowmeter through pipelines;
a third valve is arranged on a pipeline for communicating the outlet of the methanol tank with the first metering pump, and a fourth valve is arranged on a pipeline for communicating the outlet of the deionized water tank with the second metering pump;
a pipeline for communicating the outlet of the methanol tank with the third metering pump is provided with five valves, and a pipeline for communicating the outlet of the deionized water tank with the third metering pump is provided with a sixth valve;
a seventh valve is arranged on a pipeline for communicating the first metering pump with the first flowmeter, and an eighth valve is arranged on a pipeline for communicating the second metering pump with the second flowmeter;
and a ninth valve is arranged on a pipeline for communicating the third metering pump with the first flowmeter, and a tenth valve is arranged on a pipeline for communicating the third metering pump with the second flowmeter.
As a second limitation, an eleventh valve is arranged on a pipeline of the outlet of the raw material mixing tank and the inlet of the reactor.
As a third limitation, a first pressure gauge is arranged on a pipeline of the first metering pump communicated with the first flow meter, and a second pressure gauge is arranged on a pipeline of the second metering pump communicated with the second flow meter;
the first pressure gauge and the second pressure gauge are connected with the PLC control system.
And as a fourth limitation, a twelfth valve is arranged on a pipeline for communicating the first liquid level meter with the methanol tank, a thirteenth valve is arranged on a pipeline for communicating the second liquid level meter with the deionized water tank, and a fourteenth valve is arranged on a pipeline for communicating the third liquid level meter with the raw material mixing tank.
As a fifth limitation, a first flow signal transmitter is arranged on the methanol tank, a second flow signal transmitter is arranged on the deionized water tank, and a third flow signal transmitter is arranged on the raw material mixing tank;
the first flow signal transmitter, the second flow signal transmitter and the third flow signal transmitter are connected with the PLC control system.
The utility model discloses owing to adopted foretell technical scheme, it compares with prior art, and the technical progress who gains lies in:
(1) the utility model is provided with a mixer and a raw material mixing tank, when the raw material of deionized water or methanol stops supplying, the mixed deionized water or methanol is stored in the raw material mixing tank, thus the mixing proportion of the deionized water or methanol can not be changed rapidly and instantly;
(2) the utility model has the advantages that through the arrangement of the first metering pump, the second metering pump, the first flowmeter and the second flowmeter, the deionized water and the methanol can be output in proportion, and the problem of insufficient raw material mixing in the hydrogen production process by cracking the methanol is solved;
(3) the first program control valve is arranged on the methanol input pipeline, the first liquid level meter is arranged on the methanol tank, and the signal control end of the first program control valve is connected with the signal output end of the first liquid level meter, so that the first program control valve can be closed when the liquid level of the methanol tank reaches the set upper limit value, and the liquid level of the methanol tank is prevented from being too high;
(4) the utility model discloses a be provided with the second programmable valve on deionized water input pipeline, be provided with the second level gauge on the deionized water jar, and connect the signal control end of second programmable valve with the signal output part of second level gauge, can be when the liquid level of deionized water jar reaches the upper limit value that sets up, close the second programmable valve, prevent that the liquid level of deionized water jar is too high;
(5) the utility model discloses a set up reserve third measuring pump, can launch the third measuring pump when first measuring pump or second measuring pump break down to prevent first hydrogen plant's shut down.
The utility model belongs to the technical field of raw material blending in methyl alcohol schizolysis hydrogen manufacturing for make deionized water and methyl alcohol misce bene when first split hydrogen manufacturing.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure: 1. a methanol tank; 2. a methanol input pipeline; 3. a deionized water tank; 4. a deionized water input pipe; 5. a first metering pump; 6. a second metering pump; 7. a first flow meter; 8. a second flow meter; 9. a mixer; 10. a raw material mixing tank; 11. a reactor; 12. a first programmable valve; 13. a first liquid level meter; 14. a second programmable valve; 15. a second level gauge; 16. a third liquid level meter; 17. a third metering pump; 18. a first valve; 19. a second valve; 20. a third valve; 21. a fourth valve; 22. a fifth valve; 23. a sixth valve; 24. a seventh valve; 25. an eighth valve; 26. a ninth valve; 27. a tenth valve; 28. an eleventh valve; 29. a first pressure gauge; 30. a second pressure gauge; 31. a first flow signal transmitter; 32. a second flow signal transmitter; 33. a third flow signal transmitter; 34. a twelfth valve; 35. a thirteenth valve; 36. a fourteenth valve.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Example 1 first cracking hydrogen production raw material mixing device
As shown in fig. 1, the present embodiment includes a methanol tank 1, an deionized water tank 3, a first metering pump 5, a second metering pump 6, a first flow meter 7, a second flow meter 8, a mixer 9, a raw material blending tank 10, a reactor 11, and a PLC control system.
Wherein, the entry intercommunication of methanol tank 1 has methyl alcohol input pipeline 2, the export of methanol tank 1 passes through the one end intercommunication of pipeline with first measuring pump 5, the other end of first measuring pump 5 passes through the one end intercommunication of pipeline with first flowmeter 7, the other end of first flowmeter 7 passes through pipeline and 9 methyl alcohol entry intercommunications of blender, first flowmeter 7, first measuring pump 5 is connected with PLC control system respectively, first flowmeter 7 sends flow signal for PLC control system, PLC control system adjusts the size of first measuring pump 5 flow according to the setting value.
An inlet of the deionized water tank 3 is communicated with a deionized water input pipeline 4, an outlet of the deionized water tank 3 is connected with one end of a second metering pump 6 through a pipeline, the other end of the second metering pump 6 is connected with one end of a second flow meter 8 through a pipeline, and the other end of the second flow meter 8 is communicated with a deionized water inlet of a mixer 9 through a pipeline; the second flowmeter 8 and the second metering pump 6 are respectively connected with the PLC control system, the second flowmeter 8 sends a flow signal to the PLC control system, and the PLC control system adjusts the flow of the second metering pump 6 according to a set value.
The outlet of the mixer 9 is communicated with the inlet of a raw material mixing tank 10 through a pipeline, and the outlet of the raw material mixing tank 10 is communicated with the inlet of a reactor 11 through a pipeline.
In the utility model, methanol enters a methanol tank 1 through a methanol input pipeline 2, deionized water enters a deionized water tank 3 through a deionized water input pipeline 4, wherein the methanol passes through a first metering pump 5 and a first flow meter 7, and the deionized water passes through a second metering pump 6 and a second flow meter 8, so that the methanol and the deionized water can enter a mixer 9 through a pipeline according to a certain proportion and then enter a raw material mixing tank 10, and the methanol and the deionized water are mixed more uniformly; then the mixture of methanol and deionized water mixed in proportion in the raw material mixing tank 10 enters the reactor 11 through a pipeline for reaction. When the deionized water or the methanol raw material stops supplying, the mixed methanol and the deionized water are stored in the raw material mixing tank 10, so that the mixing proportion of the methanol and the deionized water cannot be instantly and violently changed.
In the embodiment, a first program control valve 12 is arranged on the methanol input pipeline 2, and a first liquid level meter 13 is arranged on the methanol tank 1; a second program control valve 14 is arranged on the deionized water input pipeline 4, a second liquid level meter 15 is arranged on the deionized water tank 3, and a third liquid level meter 16 is arranged on the raw material mixing tank 10; the first programmable valve 12, the first liquid level meter 13, the second programmable valve 14, the second liquid level meter 15 and the third liquid level meter 16 are respectively connected with a PLC control system; the methanol input pipeline 2 is also provided with a first valve 18, and the first valve 18 and the first program control valve 12 are arranged in parallel; the deionized water input pipeline 4 is also provided with a second valve 19, the second valve 19 is connected with the second program control valve 14 in parallel, and the first valve 18 and the second valve 19 are arranged, so that manual operation can be carried out when the first program control valve 12 and the second program control valve 14 are in failure.
Wherein, through be provided with first programmable valve 12 on methyl alcohol input pipeline 2, be provided with first level gauge 13 on methyl alcohol jar 1 to be connected first programmable valve 12, first level gauge 13 and PLC control system, can be when the liquid level of methyl alcohol jar 1 reaches the upper limit value that sets up, close first programmable valve 12 through PLC control system, prevent that 1 liquid level of methyl alcohol jar is too high. Through be provided with second programmable valve 14 on deionized water input pipeline 4, be provided with second level gauge 15 on deionized water tank 3 to be connected second programmable valve 14, second level gauge 15 and PLC control system, can be when the liquid level of deionized water tank 3 reaches the upper limit value that sets up, close second programmable valve 14 through PLC control system, prevent that deionized water tank 3 liquid level is too high. Through being provided with third level gauge 16 on jar 10 is joined in marriage in the raw materials mixture to 16 and the PLC control system connection of third level gauge, can give PLC control system through the liquid level signal that third level gauge 16 mixes jar 10 with the raw materials in, when the liquid level that the raw materials mixes in jar 10 reaches the great value, first measuring pump 5 of PLC control system control, second measuring pump 6 stop the pump.
Example 2 methyl cracking hydrogen production raw material mixing device
As shown in fig. 2, the present embodiment is substantially the same as embodiment 1, except that the present embodiment further includes a third metering pump 17, third to eleventh valves 20 to 28, and the third metering pump 17 is connected to the PLC control system.
Wherein, one end of the third metering pump 17 is respectively communicated with the outlet of the methanol tank 1 and the outlet of the deionized water tank 3 through pipelines; the other end of the third metering pump 17 is respectively communicated with the first flowmeter 7 and the second flowmeter 8 through pipelines; a third valve 20 is arranged on a pipeline for communicating the outlet of the methanol tank 1 with the first metering pump 5, and a fourth valve 21 is arranged on a pipeline for communicating the outlet of the deionized water tank 3 with the second metering pump 6; a fifth valve 22 is arranged on a pipeline for communicating the outlet of the methanol tank 1 with the third metering pump 17, and a sixth valve 23 is arranged on a pipeline for communicating the outlet of the deionized water tank 3 with the third metering pump 17; a seventh valve 24 is arranged on a pipeline for communicating the first metering pump 5 with the first flowmeter 7, and an eighth valve 25 is arranged on a pipeline for communicating the second metering pump 6 with the second flowmeter 8; a ninth valve 26 is arranged on a pipeline of the third metering pump 17 communicated with the first flowmeter 7, and a tenth valve 27 is arranged on a pipeline of the third metering pump 17 communicated with the second flowmeter 8. An eleventh valve 28 is arranged on a pipeline of the outlet of the raw material mixing tank 10 communicated with the inlet of the reactor 11.
In this embodiment, the eleventh valve 28 is disposed on the pipeline connecting the outlet of the raw material mixing tank 10 and the inlet of the reactor 11, so that the raw material mixing tank 10 and the reactor 11 can be conveniently overhauled and isolated, and gas in the reactor 11 is prevented from entering the raw material mixing tank 10 during overhaul.
In this embodiment, by providing the spare third metering pump 17, the third metering pump 17 can be started when the first metering pump 5 or the second metering pump 6 fails, so as to prevent the nail crack hydrogen production apparatus from stopping production. For example, when the first metering pump 5 fails, the third valve 20 and the seventh valve 24 are closed, and the fifth valve 22 and the ninth valve 26 are opened, and the methanol in the methanol tank 1 is communicated with the first flow meter 7 through the third metering pump 17. When the second metering pump 6 is out of order, the fourth valve 21 and the eighth valve 25 are closed, and the sixth valve 23 and the tenth valve 27 are opened, so that the deionized water in the deionized water tank 3 is communicated with the second metering pump 8 through the third metering pump 17. Therefore, by arranging the standby third metering pump 17, the third metering pump 17 can be started when the first metering pump 5 or the second metering pump 6 fails, so that the production stop of the hydrogen production device for nail cracking is prevented.
In this embodiment, a first pressure gauge 29 is further arranged on a pipeline through which the first metering pump 5 is communicated with the first flowmeter 7, a second pressure gauge 30 is arranged on a pipeline through which the second metering pump 6 is communicated with the second flowmeter 8, and the first pressure gauge 29 and the second pressure gauge 30 are connected with the PLC control system; a twelfth valve 34 is arranged on a pipeline for communicating the first liquid level meter 13 with the methanol tank 1, a thirteenth valve 35 is arranged on a pipeline for communicating the second liquid level meter 15 with the deionized water tank 3, and a fourteenth valve 36 is arranged on a pipeline for communicating the third liquid level meter 16 with the raw material mixing tank 10.
Wherein, through being provided with first manometer 29 and second manometer 30, can send the pressure in the pipeline for PLC control system, PLC control system can adjust the size of first measuring pump 5, the 6 flows of second measuring pump according to the pressure value. By arranging the twelfth valve 34, the thirteenth valve 35 and the fourteenth valve 36, the corresponding valves can be closed during maintenance, and the material leakage in the methanol tank 1, the deionized water tank 3 or the raw material mixing tank 10 can be prevented.
In this embodiment, a first flow signal transmitter 31 is further arranged on the methanol tank 1, a second flow signal transmitter 32 is arranged on the deionized water tank 3, and a third flow signal transmitter 33 is arranged on the raw material mixing tank 10; the first flow signal transmitter 31, the second flow signal transmitter 32 and the third flow signal transmitter 33 are connected with the PLC control system. The first flow signal transmitter 31, the second flow signal transmitter 32 and the third flow signal transmitter 33 are arranged to transmit the flow in the methanol tank 1, the deionized water tank 3 or the raw material mixing tank 10 to the PLC control system, and the PLC control system performs corresponding processing.
Claims (8)
1. A raw material mixing device for hydrogen production by cracking on the nail comprises a methanol tank, a deionized water tank, a first metering pump, a second metering pump, a first flowmeter, a second flowmeter, a mixer, a raw material mixing tank, a reactor and a PLC control system;
the inlet of the methanol tank is communicated with a methanol input pipeline, the outlet of the methanol tank is communicated with one end of a first metering pump through a pipeline, the other end of the first metering pump is communicated with one end of a first flow meter through a pipeline, the other end of the first flow meter is communicated with the methanol inlet of the mixer through a pipeline, and the first flow meter and the first metering pump are respectively connected with a PLC control system;
an inlet of the deionized water tank is communicated with a deionized water input pipeline, an outlet of the deionized water tank is connected with one end of a second metering pump through a pipeline, the other end of the second metering pump is connected with one end of a second flow meter through a pipeline, and the other end of the second flow meter is communicated with a deionized water inlet of the mixer through a pipeline; the second flowmeter and the second metering pump are respectively connected with the PLC control system;
the outlet of the mixer is communicated with the inlet of the raw material mixing tank through a pipeline, and the outlet of the raw material mixing tank is communicated with the inlet of the reactor through a pipeline.
2. The raw material mixing device for hydrogen production by cracking on the nail according to claim 1, characterized in that a first program control valve is arranged on the methanol input pipeline, and a first liquid level meter is arranged on the methanol tank; a second program control valve is arranged on the deionized water input pipeline, a second liquid level meter is arranged on the deionized water tank, and a third liquid level meter is arranged on the raw material mixing tank;
and the first program control valve, the first liquid level meter, the second program control valve, the second liquid level meter and the third liquid level meter are respectively connected with the PLC control system.
3. The raw material mixing device for hydrogen production by cracking methyl according to claim 2, wherein the methanol input pipeline is further provided with a first valve, and the first valve is connected with the first program control valve in parallel;
and the deionized water input pipeline is also provided with a second valve, and the second valve and the second program control valve are arranged in parallel.
4. The raw material mixing device for hydrogen production by nail cracking according to claim 3, characterized by further comprising a third metering pump, a third valve to a tenth valve; the third metering pump is connected with the PLC control system;
one end of the third metering pump is respectively communicated with the outlet of the methanol tank and the outlet of the deionized water tank through pipelines; the other end of the third metering pump is respectively communicated with the first flowmeter and the second flowmeter through pipelines;
a third valve is arranged on a pipeline for communicating the outlet of the methanol tank with the first metering pump, and a fourth valve is arranged on a pipeline for communicating the outlet of the deionized water tank with the second metering pump;
a pipeline for communicating the outlet of the methanol tank with the third metering pump is provided with five valves, and a pipeline for communicating the outlet of the deionized water tank with the third metering pump is provided with a sixth valve;
a seventh valve is arranged on a pipeline for communicating the first metering pump with the first flowmeter, and an eighth valve is arranged on a pipeline for communicating the second metering pump with the second flowmeter;
and a ninth valve is arranged on a pipeline for communicating the third metering pump with the first flowmeter, and a tenth valve is arranged on a pipeline for communicating the third metering pump with the second flowmeter.
5. The raw material mixing device for hydrogen production from nail cracking according to claim 1, wherein an eleventh valve is arranged on a pipeline for communicating the outlet of the raw material mixing tank with the inlet of the reactor.
6. The raw material mixing device for hydrogen production by nail cracking according to claim 1, wherein a first pressure gauge is arranged on a pipeline communicating the first metering pump and the first flowmeter, and a second pressure gauge is arranged on a pipeline communicating the second metering pump and the second flowmeter;
the first pressure gauge and the second pressure gauge are connected with the PLC control system.
7. The raw material mixing device for hydrogen production from nail crack according to claim 2, characterized in that a twelfth valve is arranged on the pipeline of the first liquid level meter communicated with the methanol tank, a thirteenth valve is arranged on the pipeline of the second liquid level meter communicated with the deionized water tank, and a fourteenth valve is arranged on the pipeline of the third liquid level meter communicated with the raw material mixing tank.
8. The raw material mixing device for first crack hydrogen production according to claim 1, wherein a first flow signal transmitter is arranged on the methanol tank, a second flow signal transmitter is arranged on the deionized water tank, and a third flow signal transmitter is arranged on the raw material mixing tank;
the first flow signal transmitter, the second flow signal transmitter and the third flow signal transmitter are connected with the PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120376720.3U CN214780745U (en) | 2021-02-19 | 2021-02-19 | Raw material mixing device for hydrogen production by cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120376720.3U CN214780745U (en) | 2021-02-19 | 2021-02-19 | Raw material mixing device for hydrogen production by cracking |
Publications (1)
| Publication Number | Publication Date |
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| CN214780745U true CN214780745U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120376720.3U Active CN214780745U (en) | 2021-02-19 | 2021-02-19 | Raw material mixing device for hydrogen production by cracking |
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| CN (1) | CN214780745U (en) |
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2021
- 2021-02-19 CN CN202120376720.3U patent/CN214780745U/en active Active
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