Part 2 - Corrosion, hazardous, and explosive chemicals


The types of chemicals used in industrial applications are varied, and many chemicals are hazardous to some extent. Some of the common hazards include the following:

  1. Corrosive chemicals - include organic and inorganic acids and alkalis such as sulfuric acid, hydrochloric acid, sodium hydroxide, etc.

  2. Oxidizing agents - can cause or support combustion, including hydrogen peroxide, nitric acid, nitrates, permanganates, etc.

  3. Flammable chemicals - chemicals with low flashpoints such as acetone, alcohol, gasoline, etc.

  4. Chemicals that are reactive with water - lithium, sodium, potassium, and other alkali metals and their compounds, strong acids, and strong alkalis.

  5. Chemicals that ignite with air - mostly fine powders of alkali metals, white phosphorus, metalorganics, nonmetal hydrides, etc.

  6. Chemicals that are toxic to living organisms and/or plants - most of the above chemical categories are also harmful to organisms. Other chemicals include known carcinogens and poisons.

 

Almost all these types of chemicals require special care with their handling, and leakage is not allowed. Centrifugal pumps that are designed to be leak-free include magnetically driven pumps and canned motor pumps. For corrosive chemicals, corrosive-resistant alloys or corrosive-resistant plastic materials should be used. Flammable chemicals require explosion-proof or flame-proof motors to prevent accidental ignition. Reactive chemicals should be handled under a controlled environment or within a fully enclosed system. Special care should be taken to ensure proper pump operation to prevent accidental failure and leakage which can cause serious harm to personnel and the environment.

 

Contact us if you need assistance with selecting a chemical pumps for your chemical application.