Chlorine zero-pressure control method applied to process for preparing alkali by utilizing zero-pole ionic membrane electrolytic cell

A technology of ionic membrane electrolyzer and zero pole distance, which is applied in the direction of electric fluid pressure control, electrolysis process, electrolysis components, etc., can solve the problems such as compression deformation of elastic body of zero pole distance electrolyzer, ion membrane damage, etc. Achieve the effect of improving equipment use efficiency, reducing equipment operating costs and increasing economic benefits

Inactive Publication Date: 2011-04-20
TIANCHEN CHEM
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Problems solved by technology

[0006] The invention solves the problems in the prior art that the elastic body of the zero-pole-distance electrolytic cell is deformed under pressure and the ion membrane is damaged due to the abnormal pressure difference in the normal production and emer

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  • Chlorine zero-pressure control method applied to process for preparing alkali by utilizing zero-pole ionic membrane electrolytic cell
  • Chlorine zero-pressure control method applied to process for preparing alkali by utilizing zero-pole ionic membrane electrolytic cell

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Embodiment Construction

[0014] Refer to attached figure 1 , this embodiment includes successively connected zero pole distance sub-membrane electrolyzer 1, chlorine gas positive pressure water seal 2, chlorine gas negative pressure water seal 3, chlorine gas drying device 4, 3K chlorine compressor 5, hydrogen gas positive pressure water seal 6, hydrogen gas Negative pressure water seal 7, hydrogen compressor 8; after electrolysis of the refined brine in the zero-electrode distance electrolytic cell, the pressure of the electrolytic chlorine gas is set to (0±2)kPa, and the chlorine gas main pipe is only equipped with two on-off valves, one for dechlorination Drying, one detoxification, the purpose of setting the on-off valve is to quickly isolate the chlorine system from the follow-up process in the event of an emergency shutdown and change the detoxification, so as to ensure the stability of the anode negative pressure, and the chlorine gas enters the 3K chlorine compressor after being processed by th...

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Abstract

The invention discloses a chlorine zero-pressure control method applied to a process for preparing alkali by utilizing a zero-pole ionic membrane electrolytic cell. In the method, zero-pole ionic membrane electrolytic cell, a chlorine safety water seal, a hydrogen safety water seal, a chlorine drying device, a 3K chlorine compressor and a hydrogen compressor which are sequentially connected are utilized; the difficulty that accidental injuries occur on elastomers and iconic membranes caused by the abnormal chlorine header pipe pressure difference and negative pressure difference occurrence when the iconic membrane device is in a normal production state and in an emergent condition is solved by setting the pressure of the chlorine generated by refining salt water though electrolysis of the zero-pole iconic membrane electrolytic cell into (0+/-12) kPa, and the hydrogen pressure into (4+/-2) kPa, thus lowering the equipment operation cost, improving the equipment use ratio and increasing the economic benefits. The method provided by the invention can be widely applied into the iconic membrane alkali production process, especially the method for producing the alkali by utilizing the high-current density zero-pole iconic membrane electrolytic cell.

Description

Technical field: [0001] The invention relates to a zero-pole-distance sub-membrane electrolytic cell alkali-making process using chlorine gas zero pressure control method, and is particularly suitable for the high-current-density zero-pole-distance sub-membrane electrolytic cell electrolytically refined brine soda making process. Background technique: [0002] In the production process of ionic membrane electrolysis, energy consumption is an important part of the cost. In order to reduce energy consumption, it is necessary to obtain high current efficiency and low cell voltage, and to maintain low power consumption under high current density. The zero-pole distance sub-membrane electrolysis alkali production technology is recognized worldwide as the most advanced production technology and the most economical alkali production method because of its low energy consumption, high product quality, and pollution-free and many other advantages. [0003] The anode of the zero-pole-d...

Claims

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Application Information

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IPC IPC(8): C25B1/46G05D16/20
Inventor 吴彬周延红唐红建杨军王志勇李朝冯新建吴作强魏勇马海滨秦明月
Owner TIANCHEN CHEM
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