What is the contact process?

The contact process is a chemical procedure that creates sulfuric acid for industrial purposes such as colors, detergents, fertilizers and plastic products. The method was extremely attributed to the British merchant named Peregrine Phillips, which patented this process in 1831. Since then, the contact process process has been used worldwide to produce sulfuric acid.

Before the contact process became widespread, he was the leading process that was found by the former process that was more efficient and cheaper. The industry also favored this over the main chamber process, as it can also be used to produce other chemical compounds such as oil oxide and sulfur oxide. The contractual process generally has three steps and creates sulfur dioxide and then converts it to sulfur oxide oxide and then converts it to sulfuric acid. The first method is to burn some molten sulfur that can mix with the air when it burns, resulting inXID Siro. The second method is to heat the materials that have sulfur in them, such as iron pyrite. The evaporation sulfur is then mixed with oxygenated air and will be converted to sulfur oxide.

produced by sulfur oxide may contain some dirt, so it should undergo the cleaning process, which first includes a dust chamber to eliminate all dust particles in the compound. The second step is the washing tower, where sulfur oxide oxide is pulled out with water to rinse soluble contaminants. The compound passes through the drying tower to dehydrate it for further cleaning and passes through the test box to remove arsenic oxide. Once sulfur oxide oxide is thoroughly purified, it can be converted to sulfur oxide oxide.

To convert sulfur dioxide into sulfur oxide oxide, the contact process usually uses a compound called vanadium oxide contained in several high -pressure pipes. The pipeline is heated andPs 842 ° F (about 450 ° C) to make oxygen from vanado oxide into the air. Once sulfur dioxide is inserted into the pipe, it reacts with oxygenated air and becomes sulfur oxide. Ideally, more than 95% of sulfur dioxide should be converted into sulfur dioxide and non -converted sulfur dioxide is removed.

In the final step of the contact process, concentrated sulfuric acid is used to dissolve sulfur oxide and produce opeum. Oleum is then made to react with water, and finally sulfuric acid is produced in the form of liquid. The sulfuric acid produced is 30 to 50 percent more than concentrated sulfuric acid used in the final step of the contact process.