Sodium Hypochlorite Manufacture Technology Description

Online Sodium Hypochlorite Data: Manufacture, Uses and Applications

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In this page you will find free data about Sodium Hypochlorite, including:

  • What is Sodium Hypochlorite
  • How to make Sodium Hypochlorite
  • Sodium Hypochlorite uses and applications

This page presents brief synopsis of Sodium Hypochlorite production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:

  • Major process steps
  • Simplified, schematic flow diagram & key equipment
  • Important safety or environmental considerations
  • Economic perspective, comprising capital expenditures and/or operating expenses

Sodium Hypochlorite Manufacture via Chemical Process

Sodium hypochlorite (NaClO) is the active constituent in chlorine bleach, a strong oxidizer and bleaching agent. Increases in household bleach demand are driven mostly by population growth. In turn, population growth and its corresponding increases in water consumption — coupled with limited fresh water resources — makes water treatment the largest application for bleach, as well as the fastest-growing segment of bleach use.

Sodium hypochlorite chemical production is a well established process in the industry, and the principle behind its operation is also employed for preventing chlorine emissions in chlor-alkali plants. The chemical process relies on the acquisition of chlorine and caustic soda (sodium hydroxide; NaOH) feedstock from external sources, in contrast with the electrochemical process for bleach, which also involves brine electrolysis.

Technology Description

The chlorination of caustic soda to sodium hypochlorite is an exothermic reaction. The chemical production process depicted below is a widely used process, similar to the one employed by Solvay Chemicals (Brussels, Belgium;, for example. The process is suited to producing ...

Sodium Hypochlorite Manufacture - Process Flow Diagram

Reaction and Product Discharge

The chlorine absorption system can be divided into two parts: in the first, a packed column is operated with a safe excess of caustic to prevent reduction in pH; the second part, in turn, receives the liquor from the first column to be postchlorinated, until the desired bleach concentration ...

Economic Performance

The estimated capital investment for such a plant on the U.S. Gulf Coast is ...

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