13% Sodium Hypochlorite Production
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This post was last edited by sunjl1981 on 2013-1-6 at 20:01. Does that friend from Sichuan know the methods for producing, storing, and transporting 13% sodium hypochlorite? Please share them. Thank you! # + + .
13% sodium hypochlorite can be prepared by using an ion-exchange membrane caustic to absorb chlorine gas. The temperature must be well controlled and not too high to prevent decomposition; original chlorine should be used as much as possible.
Chlor-alkali plants are generally capable of producing it, with a concentration that can reach 20%.
We often produce sodium hypochlorite at a concentration of over 13%; both elemental chlorine and waste chlorine gas can be used. The key is to control the alkali concentration as well as the reaction temperature. Temperature is also a concern when it comes to storage and transportation; storing and transporting it in summer is rather difficult.
This post was last edited by linqhy on 2010-1-11 at 10:54. Diluted caustic soda is used to absorb chlorine gas; the reaction is as follows: 2NaOH + Cl2 = NaClO + NaCl + H2O. This is an exothermic reaction, so a heat exchanger is installed in the absorption tower to cool the absorbent solution. It is also necessary to ensure an adequate amount of caustic soda, otherwise the sodium hypochlorite produced is prone to decomposition, and high temperatures can also lead to decomposition
The last edit to this post was made by Yino Zhang on 2010-1-24 at 19:02. The circulation tank contains 30% water and 40% alkali; a concentration of about 1% alkali is sufficient to produce 13% hypochlorous acid
By reacting 15% liquid caustic with chlorine while controlling the temperature, 13% sodium hypochlorite can be produced
I find it a bit difficult to prepare sodium hypochlorite at 13% concentration. Could you tell me what the alkali concentration you use is? What is the temperature control? How long does it take to prepare one batch of sodium hypochlorite? 4# CZHUANGBAOHENG
Try to transport at night, and add some stabilizers； Storage areas should be shaded, and pipes and tanks should be insulated.