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Application of fiber defoamer in chlorine industry

Jul 29, 2023

As we all know, the preparation of chlorine is mainly electrolysis at present, and its brief process is as follows:Using electrodes to electrolyze salt water, at the anode we produce chlorine gas,at the cathode we produce hydrogen, sodium hydroxide,potassium hydroxide and so on material.
 

There are two types of electrolytic cells:

1
diaphragm type: Diaphragm type electrolytic cells contain a porous, permeable asbestos partition to separate the anode and cathode, which allows ions in electricity Under the action of the field through, and inhibit the diffusion of finished products. The anode is made of graphite or titanium, and the cathode is wound with wire And into.
The reaction formula is as follows:
Na Cl + H2O  electrolytic  NaOH +1/2H2+1/2Cl2
If OH- ions come into contact with the anode, they produce hypochlorite, increasing chlorine loss.The equation is:
2OH——  electrolytic  H2O＋1/2O2+1/2e
Oxygen coming into contact with the anode graphite and chloride ions will produce chlorine gas.
2
Reason analysis:

In a mercury-type cell, the salt water of the electrolyte is partially decomposed by the movement of ions between the poles, producing chlorine gas at the anode and sodium mercuride (Na Hg) at the cathode. The amalgam is fed into a resolver with a NaOH solution as the electrolyte, a short metal circuit as the anode and graphite as the cathode. Fill the resolver with pure water and you will have H2 production and an increase in NaOH concentration. The generated Hg is reused as an electrolytic agent.

The reaction formula is as follows:
Na Cl +Hg electrolytic Cl2 +2Na(Hg)
2Na(Hg)+2H2O electrolytic 2NaOH+H2 +Hg

 

Chlorine process: After leaving the cell, the resulting chlorine gas is cooled with water, dried with sulfuric acid, compressed with a compressor, and finally liquefied into liquid chlorine.

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As can be seen from the foregoing, in the process of
electrolysis chlorine production, fiber defogger is mainly
applied in the following technological links:
1. Installed in front of the drying tower, its function is to
collect water; Prevent soluble solids such as NaCl from
blocking the drying tower; Increase the purity of finished
products; Reduce consumption of sulfuric acid in drying
tower.
 
 
 
2. Installed after the drying tower, the function is to collect
sulfuric acid spray; Improve product purity; Prevent
moisture condensation in the pipe and affect the heat transfer
efficiency.
 
3. After the defoamer is installed in the electrolytic cell, the
dust mist of NaOH and Hg is collected to prevent: A. the
purity of H2 is affected; B, corrosion compressor; C, reduce
the life of activated carbon.
 
4. Installed in front of the spray system to collect NaOH that
will be mixed with the water in the intercooler of the spray
system to prevent water contamination problems.

 

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The Great Wall Marine Equipment (Jiangsu) Co.,Ltd fiber defogger is widely used in the chlorine industry in China.By using the most suitable materials and the correct setting

To achieve the required efficiency and maximum service life.Whether you use an electrolytic diaphragm or mercury process, whether chlorine or wet chlorine from steam, or through a drying tower.After the dry chlorine gas; Whether it's hydrogen or sodium hydroxide; The design and technology of the Great Wall fiber defogger can ensure that your questions are answered the topic.

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