CN213708500U - Single-tank start-up gas mixing equipment for preparing alkali by ionic membrane - Google Patents
Single-tank start-up gas mixing equipment for preparing alkali by ionic membrane Download PDFInfo
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- CN213708500U CN213708500U CN202022221669.7U CN202022221669U CN213708500U CN 213708500 U CN213708500 U CN 213708500U CN 202022221669 U CN202022221669 U CN 202022221669U CN 213708500 U CN213708500 U CN 213708500U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a single-tank start-up and gas-mixing device for preparing alkali by using an ionic membrane, which comprises a cathode water seal cylinder, an anode water seal cylinder, a water seal series-connection pipe and a nitrogen gas inlet header pipe; the cathode water seal cylinder comprises a water seal water inlet pipe, a cathode water seal air inlet pipe and a cathode water seal exhaust pipe; the anode water seal cylinder comprises an anode water seal air inlet pipe, an anode water seal exhaust pipe, a water seal overflow pipe and a water seal drain pipe; one end of the nitrogen inlet main pipe is communicated with the nitrogen supply pipeline, and the other end of the nitrogen inlet main pipe is communicated with the cathode water seal air inlet pipe and the anode water seal air inlet pipe respectively through a nitrogen inlet water seal pipe. The advantages are that: (1) the device has simple structure and low operation difficulty, and can complete gas mixing without the cooperation of personnel; (2) the pressure is stable and stable in the operation process, the problem of operation pressure fluctuation caused by improper matching in the process of starting and gas mixing of the electrolytic cell is solved, and the service life of the ionic membrane is prolonged; (3) the automatic gas mixing control is convenient to realize.
Description
Technical Field
The utility model relates to an ion membrane alkali manufacturing production device, in particular to an electrolytic cell start and gas mixing device in ion membrane alkali manufacturing.
Background
In the prior production of ion membrane alkali production, a production system usually comprises a plurality of electrolytic cells, the simultaneous operation of the plurality of electrolytic cells can not be achieved, and at the moment, when a plurality of electrolytic cells need to be operated or one electrolytic cell needs to be repaired after being overhauled, the gas phase of the cathode and the anode of the single electrolytic cell needs to be merged into a main system. Because the ion membrane electrolytic cell runs in a positive pressure state, the running pressure of a main system is usually 10-30 kPa, the pressure of a single electrolytic cell is required to be gradually increased from the normal pressure to the system pressure during gas filling, the operation is usually completed by the cooperation of three persons, the two persons respectively and slowly open the outlet valves on the hydrogen gas and the chlorine branch pipe of the cathode and the anode of the single electrolytic cell, one person pays attention to the hydrogen gas and the chlorine gas pressure of the electrolytic cell, and the data of the hydrogen gas and the chlorine gas pressure are reported and read to ensure that the pressure difference of the hydrogen gas and the chlorine gas is in a certain range until the pressure of the single electrolytic cell is consistent with the pressure of the main system main. The operation has high control requirement, and easily causes overlarge or undersize cathode-anode pressure difference caused by improper matching of two persons, damages the ionic membrane, reduces the service life of the ionic membrane, or causes pressure fluctuation of a main pipe to influence the subsequent working section.
SUMMERY OF THE UTILITY MODEL
In order to avoid the damage of the electrolytic cell and gas to the ionic membrane, the utility model causes the pressure fluctuation of the header pipe and improves the convenience of gas operation, the utility model provides an ionic membrane alkali-making single-groove start-up and gas equipment.
The utility model provides a technical scheme that its technical problem adopted is: ion membrane alkali preparation single tank start gas equipment, its characterized in that includes:
the negative pole water seal barrel, the negative pole water seal barrel includes:
one end of the water seal water inlet pipe is arranged at the upper part of the cathode water seal cylinder, and the other end of the water seal water inlet pipe is connected with a water source;
one end of the cathode water seal air inlet pipe is vertically inserted into the cathode water seal cylinder from the top of the cathode water seal cylinder, the insertion depth is H, and the other end of the cathode water seal air inlet pipe is communicated with a hydrogen pipeline of a single electrolytic cell;
one end of the cathode water seal exhaust pipe is arranged at the top of the cathode water seal cylinder;
the positive pole water seal barrel, positive pole water seal barrel includes:
anode water seal air inlet pipe: one end of the anode water seal cylinder is vertically inserted into the anode water seal cylinder from the top of the anode water seal cylinder, the insertion depth is H, H is less than H, and the other end of the anode water seal cylinder is communicated with a chlorine pipeline of a single electrolytic cell;
one end of the anode water-sealed exhaust pipe is arranged at the top of the anode water-sealed cylinder;
one end of the water seal overflow pipe is arranged at the upper part of the anode water seal cylinder;
one end of the water seal drain pipe is arranged at the lower part of the anode water seal cylinder and is used for draining water;
the water seal serial pipe is used for communicating the lower parts of the cathode water seal cylinder and the anode water seal cylinder;
one end of the nitrogen inlet header pipe is communicated with the nitrogen supply pipeline, and the other end of the nitrogen inlet header pipe is respectively communicated with the cathode water seal air inlet pipe and the anode water seal air inlet pipe through a nitrogen inlet water seal pipe;
the water seal water inlet pipe, the cathode water seal air inlet pipe, the anode water seal air inlet pipe, the water seal water drain pipe, the nitrogen gas inlet header pipe and the nitrogen gas inlet water seal pipe are all provided with valves.
As a further improvement, the water seal overflow pipe is provided with a water seal U-shaped bend, so that gas in the anode water seal is prevented from flowing out of the water seal overflow pipe to the wastewater treatment device.
Preferably, the other end of the water seal drain pipe is communicated with an upstream water seal overflow pipe of the water seal U-shaped bend.
As a further improvement of the utility model, the other end of the water seal overflow pipe is connected with a wastewater treatment device.
As a further improvement of the utility model, the other end of the cathode water seal exhaust pipe is connected with a hydrogen emptying pipeline, and the other end of the anode water seal exhaust pipe is connected with an accident chlorine treatment system.
As a further improvement of the utility model, the cathode water seal cylinder and the anode water seal cylinder are made of PVC (polyvinyl chloride) externally-wound glass fiber reinforced plastics.
As a further improvement, the valve is a programmable valve, and will the programmable valve signal is inserted into DCS control system to realize the automatic control of valve opening/closing.
The utility model has the advantages that: (1) the device is used for merging a single-groove cathode and anode gas system into a main system when a single groove is started in the ion membrane alkali preparation, the device is simple in structure and low in operation difficulty, and gas mixing can be completed without personnel cooperation; (2) the pressure is stable and stable in the operation process, the problem of operation pressure fluctuation caused by improper matching in the process of starting and gas mixing of the electrolytic cell is solved, and the service life of the ionic membrane is prolonged; (3) the automatic gas mixing control is convenient to realize.
Drawings
FIG. 1 is a schematic structural diagram of a single-tank start-up and gas-mixing device for producing alkali by using an ionic membrane.
Labeled as:
1-cathode water seal cylinder, 101-water seal water inlet pipe, 102-water seal water inlet valve, 103-cathode water seal exhaust pipe, 104-cathode water seal air inlet pipe, 105-cathode water seal air inlet valve;
2-anode water seal cylinder, 201-water seal drain pipe, 202-water seal drain valve, 203-water seal overflow pipe, 204-water seal U-shaped bend, 205-anode water seal exhaust pipe, 206-anode water seal air inlet pipe, 207-anode water seal air inlet valve;
3-water sealing the serial pipe;
4-nitrogen inlet manifold, 401-nitrogen inlet manifold valve, 402-nitrogen inlet seal pipe and 403-nitrogen inlet seal valve.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in figure 1, the single-tank start-up and gas mixing equipment for preparing alkali by using the ionic membrane comprises:
cathode water seal barrel 1, cathode water seal barrel 1 includes:
one end of the water seal water inlet pipe 101 is arranged at the upper part of the cathode water seal cylinder 1, and the other end is connected with a water source;
one end of the cathode water seal air inlet pipe 104 is vertically inserted into the cathode water seal cylinder 1 from the top of the cathode water seal cylinder 1, the insertion depth is H, and the other end is communicated with a hydrogen pipeline of a single electrolytic cell;
one end of the cathode water seal exhaust pipe 103 is arranged at the top of the cathode water seal cylinder 1, and the other end of the cathode water seal exhaust pipe is connected with a hydrogen gas emptying pipeline;
anode water seal barrel 2, anode water seal barrel 2 includes:
one end of the anode water-sealing air inlet pipe 206 is vertically inserted into the anode water-sealing cylinder 2 from the top of the anode water-sealing cylinder 2, the insertion depth is H, H is less than H, and the other end is communicated with a chlorine pipeline of a single electrolytic cell;
one end of the anode water-sealed exhaust pipe 205 is arranged at the top of the anode water-sealed cylinder 2, and the other end is connected with an accident chlorine treatment system;
one end of the water seal overflow pipe 203 is arranged at the upper part of the anode water seal cylinder 2, the other end of the water seal overflow pipe 203 is connected with a wastewater treatment device, and the water seal overflow pipe 203 is provided with a water seal U-shaped bend 204;
one end of the water seal drainage pipe 201 is arranged at the lower part of the anode water seal cylinder 2, and the other end is communicated with an upstream water seal overflow pipe 203 of the water seal U-shaped bend 204 and is used for draining water;
the water seal serial pipe 3 is used for communicating the lower parts of the cathode water seal cylinder 1 and the anode water seal cylinder 2;
one end of the nitrogen inlet manifold 4 is communicated with the nitrogen supply pipeline, and the other end of the nitrogen inlet manifold is respectively communicated with the cathode water-seal air inlet pipe 104 and the anode water-seal air inlet pipe 206 through a nitrogen inlet seal pipe 402;
the water seal water inlet pipe 101, the cathode water seal air inlet pipe 104, the anode water seal air inlet pipe 206, the water seal water outlet pipe 201, the nitrogen inlet header pipe 4 and the nitrogen inlet water seal pipe 402 are respectively provided with a cathode water seal air inlet valve 105, an anode water seal air inlet valve 207, a water seal water outlet valve 202, a nitrogen inlet header valve 401 and a nitrogen inlet water seal valve 403.
Before a single electrolytic cell is started and a system is started, the water seal drain valve 202 is closed, the cathode water seal air inlet valve 105 and the anode water seal air inlet valve 207 are opened, so that the cathode water seal air inlet pipe 104 is communicated with a hydrogen pipeline of the electrolytic cell, and the anode water seal air inlet pipe 206 is communicated with a chlorine pipeline of the electrolytic cell; simultaneously opening a nitrogen inlet main valve 401 and a nitrogen inlet water seal valve 403, filling nitrogen into the cathode water seal air inlet pipe 104 and the anode water seal air inlet pipe 206, simultaneously opening a water seal water inlet valve 102, slowly increasing the water seal liquid level, and continuously increasing the pressure of the cathode water seal air inlet pipe 104 and the anode water seal air inlet pipe 206 along with the continuous increase of the liquid level, namely continuously increasing the pressure of hydrogen and chlorine pipelines of the cathode and the anode of the electrolytic cell; because the depth H of the cathode water seal air inlet pipe 104 inserted into the water seal is greater than the depth H of the anode water seal air inlet pipe 206 inserted into the water seal, the pressures applied by the liquid in the water seal to the cathode water seal air inlet pipe 104 and the anode water seal air inlet pipe 206 are different, and constant differential pressure is generated, namely, the pressure of the hydrogen and chlorine pipelines of the cathode and the anode of the electrolytic cell is continuously increased, but the differential pressure of the hydrogen and the chlorine pipelines of the cathode and the anode of the electrolytic cell is always constant until the pressure of the hydrogen and the chlorine of the cathode and the anode of the single cell is slightly greater than the pressure of the main system header pipe, the water adding is stopped, the water seal water inlet valve 102 is closed, the nitrogen water inlet seal valve 403 and the nitrogen gas inlet header valve 401 are closed. After the gas is completely discharged, the water seal drain valve 202 is opened to drain the wastewater in the water seal for standby. The gas mixing process of a single electrolytic cell can be finished without depending on the cooperation of personnel, and the electrolytic cell and the ion membrane cannot be damaged without any operation experience.
It is easy to understand that in the process, the cathode-anode differential pressure of the equipment is determined and fixed according to the process requirements when the equipment is manufactured at first, and the differential pressure cannot be regulated and controlled after the equipment is manufactured; if the process has new requirements on the cathode and anode hydrogen-chlorine pressure difference, the pressure difference of the cathode and anode hydrogen and chlorine pipelines of a single electrolytic cell in the gas merging process can be adjusted by adjusting the difference between the depth H of the cathode water seal air inlet pipe 104 inserted into the water seal and the depth H of the anode water seal air inlet pipe 206 inserted into the water seal, and the pressure difference can meet the process requirements at 0-10 kPa under the common condition.
Claims (7)
1. Ion membrane alkali preparation single tank start gas equipment, its characterized in that includes:
the negative pole water seal barrel, the negative pole water seal barrel includes:
one end of the water seal water inlet pipe is arranged at the upper part of the cathode water seal cylinder, and the other end of the water seal water inlet pipe is connected with a water source;
one end of the cathode water seal air inlet pipe is vertically inserted into the cathode water seal cylinder from the top of the cathode water seal cylinder, the insertion depth is H, and the other end of the cathode water seal air inlet pipe is communicated with a hydrogen pipeline of a single electrolytic cell;
one end of the cathode water seal exhaust pipe is arranged at the top of the cathode water seal cylinder;
the positive pole water seal barrel, positive pole water seal barrel includes:
anode water seal air inlet pipe: one end of the anode water seal cylinder is vertically inserted into the anode water seal cylinder from the top of the anode water seal cylinder, the insertion depth is H, H is less than H, and the other end of the anode water seal cylinder is communicated with a chlorine pipeline of a single electrolytic cell;
one end of the anode water-sealed exhaust pipe is arranged at the top of the anode water-sealed cylinder;
one end of the water seal overflow pipe is arranged at the upper part of the anode water seal cylinder;
one end of the water seal drain pipe is arranged at the lower part of the anode water seal cylinder and is used for draining water;
the water seal serial pipe is used for communicating the lower parts of the cathode water seal cylinder and the anode water seal cylinder;
one end of the nitrogen inlet header pipe is communicated with the nitrogen supply pipeline, and the other end of the nitrogen inlet header pipe is respectively communicated with the cathode water seal air inlet pipe and the anode water seal air inlet pipe through a nitrogen inlet water seal pipe;
the water seal water inlet pipe, the cathode water seal air inlet pipe, the anode water seal air inlet pipe, the water seal water drain pipe, the nitrogen gas inlet header pipe and the nitrogen gas inlet water seal pipe are all provided with valves.
2. The single-tank start-up gas merging equipment for producing alkali by using the ionic membrane as claimed in claim 1, which is characterized in that: the water seal overflow pipe is provided with a water seal U-shaped bend.
3. The ionic membrane alkali preparation single-tank start-up gas merging equipment as claimed in claim 2, wherein: the other end of the water seal drain pipe is communicated with an upstream water seal overflow pipe of the water seal U-shaped bend.
4. The ionic membrane alkali preparation single-tank start-up and gas merging equipment as claimed in any one of claims 1 to 3, wherein: the other end of the water seal overflow pipe is connected with a wastewater treatment device.
5. The ionic membrane alkali preparation single-tank start-up and gas merging equipment as claimed in any one of claims 1 to 3, wherein: the other end of the cathode water-sealed exhaust pipe is connected with a hydrogen emptying pipeline, and the other end of the anode water-sealed exhaust pipe is connected with an accident chlorine treatment system.
6. The ionic membrane alkali preparation single-tank start-up and gas merging equipment as claimed in any one of claims 1 to 3, wherein: the cathode water seal cylinder and the anode water seal cylinder are made of PVC (polyvinyl chloride) externally-wound glass fiber reinforced plastics.
7. The ionic membrane alkali preparation single-tank start-up and gas merging equipment as claimed in any one of claims 1 to 3, wherein: the valve is a program control valve, and a program control valve signal is accessed into a DCS control system to realize automatic valve opening/closing control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221669.7U CN213708500U (en) | 2020-09-30 | 2020-09-30 | Single-tank start-up gas mixing equipment for preparing alkali by ionic membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221669.7U CN213708500U (en) | 2020-09-30 | 2020-09-30 | Single-tank start-up gas mixing equipment for preparing alkali by ionic membrane |
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| Publication Number | Publication Date |
|---|---|
| CN213708500U true CN213708500U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022221669.7U Active CN213708500U (en) | 2020-09-30 | 2020-09-30 | Single-tank start-up gas mixing equipment for preparing alkali by ionic membrane |
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| Country | Link |
|---|---|
| CN (1) | CN213708500U (en) |
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- 2020-09-30 CN CN202022221669.7U patent/CN213708500U/en active Active
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