Continuous preparation method for sodium hypochlorite

A technology of sodium hypochlorite and sodium hypochlorite solution, applied in the directions of hypochlorous acid, hypochlorite, etc., can solve the problems of limited sodium hypochlorite content and output, unable to realize continuous production, low production efficiency, etc. The effect of high production and production efficiency

Inactive Publication Date: 2011-02-02
重庆天原化工有限公司
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Problems solved by technology

The preparation method of this repeated circulation absorption, owing to need repeatedly circulation absorption in the absorption tower, can't realize continuous production, causes production efficiency to be lower, serious waste of energy, and the sodium hypochlorite content and output in the obtained product are also restricted to a large extent

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  • Continuous preparation method for sodium hypochlorite
  • Continuous preparation method for sodium hypochlorite
  • Continuous preparation method for sodium hypochlorite

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with specific embodiments. It should be understood that the selected embodiments are only for illustrating the present invention, not for limiting the protection scope of the present invention.

[0019] The continuous preparation method of sodium hypochlorite of the present invention comprises the steps:

[0020] a, preparation of sodium hydroxide solution: prepare sodium hydroxide solution according to a predetermined concentration in alkali mixing tank 1;

[0021] B, primary mixing: the sodium hydroxide solution obtained in step a is fully mixed with the sodium hypochlorite mother liquor in the primary circulation tank 2;

[0022] c, primary absorption reaction: the mixed solution obtained in step b is pumped into the primary absorption tower 3 to carry out primary absorption reaction with chlorine;

[0023] D, secondary mixing: fully mix the reaction solution obtained in the step c with the sodi...

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Abstract

The invention discloses a continuous preparation method for sodium hypochlorite, which comprises the following steps of: a. sodium hydroxide solution preparation: preparing a sodium hydroxide aqueous solution in an alkali dosing tank according to preset concentration; b. first-class mixture: fully mixing the sodium hydroxide solution obtained in the step a with a sodium hypochlorite mother solution in a first-class circulating tank; c. first-class absorption reaction: filling mixed liquid obtained in the step b into a first-class absorbing tower for carrying out first-class absorption reaction with chlorine; d. second-class mixture: fully mixing reaction liquid obtained in the step c with the sodium hypochlorite mother solution in a second-class circulating tank; and e. second-class absorption reaction: filling mixed liquid obtained in the step d into a second-class absorbing tower for carrying out second-class absorption reaction with the chlorine to finish the preparation of sodium hypochlorite. The invention can stably obtain a high-quality product just by two-class one-step absorption and really realize the continuous production of the sodium hypochlorite, has higher productivity, greatly saves energy and is easier to realize the production of the high-quality product.

Description

technical field [0001] The invention relates to a preparation method of sodium hypochlorite, in particular to a continuous preparation method of sodium hypochlorite. Background technique [0002] Sodium hypochlorite is a multi-purpose and multi-functional chemical product, which can be used as a bleaching agent in the textile and paper industry for disinfection, sterilization, and in the production of organic chemical products. Production of cyanuric acid. In recent years, with the vigorous development of sanitary disinfection paper, sodium hypochlorite has made great progress as a cheap bleaching agent. [0003] The conventional sodium hypochlorite preparation process is to pass chlorine gas into a certain concentration of sodium hydroxide solution. Usually, the available chlorine content of the obtained sodium hypochlorite is 10%-13%, and the free alkali content is ≤1%. Because the concentration of sodium hypochlorite is low, sodium chloride is difficult to separate out,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/06
Inventor 陈惠明陈德国潘华吴成进邬麒麟魏国强
Owner 重庆天原化工有限公司
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