Tutorial for the contact process for sulfuric acid. Manual for sulfuric acid contact process louisiana state university. At proper operating conditions one mole of water is required for every mole of sulfuric acid. This can either be made by burning sulphur in an excess of air. Pdf optimizing the process of sulphuric acid injection. Preparation of sulphuric acid by contact process with examples. Conversion of sulphur dioxide into sulfur trioxide.
Around 200 million metric tons of sulphuric acid is manufactured per year most of it from strong so2 10% gas. Sulfuric acid sulfuric acid h2so4 is a strong, heavy acid with a density of 1. Sulphuric acid contact process industrial preparation of. Through changing to the bayer double contact process, the conversion can be raised to 99. The double contact process for sulfuric acid production. Now a days, sulphuric acid is prepared by contact process all over the world. The contact process for the manufacture of sulphuric acid.
Conversion of sulfur trioxide formed into concentrated h 2so 4. Sulphuric acid is used with phosphate rock in the manufacture of phosphate fertilisers. However, minor variations within these main two processes. Steps involved in the manufacturing of sulphuric acid are as stated below. Sulphuric acid alternative spellin sulfuric acid is a heichly corrosive strang mineral acid wi the molecular formula h 2 so 4. Optimizing the process of sulphuric acid injection into limestones article pdf available in journal of geochemical exploration 62s. When producing sulphuric acid by the contact process an important step is to produce. Sulfuric acid also known as oil of vitriol, battery acid, and king of chemicals produced using contact process used in the manufacture of fertilizers, explosives, dyes, petroleum products, lead. Preparation of sulphuric acid by contact process is based upon the catalytic oxidation of so 2 to so 3. Sulphuric acid production industrial processes used 2 umweltbundesamt vienna, 2017 the conversion is an exothermic process, the gas temperature rises from approx. Step 1 molten sulphur or sulphide ore eg pyrite is combusted to form so2.
The double contact process for sulfuric acid production in the usual contact plants 9798% of the so2 is oxidized to so3 while the remaining 23% nonoxidized so2 are emitted. I want the cost per gj of process steam, cooling water and refrigeration used in a chemical plant. Pdf design of a plant to manufacture sulfuric acid from. Waste heat is utilized in waste heat boilers and the steam is converted in a steam tur. Smaller amounts are used in the production of ammonium and potassium sulphate. Pdf production of sulfuric acid engr sajid chaudhary. Contact process for manufacturing of sulphuric acid. Double contact double absorption process resulting in sulphuric acid.
The above sections describe the basic steps of sulphuric acid manufacture. What are the processes of sulphuric acid manufacture. Pdf design of a plant to manufacture sulfuric acid from sulfur. Substantial quantities are used as an acidic dehydrating agent in organic chemical and petro chemical processes, as well as in oil re.
For more information, call the atsdr information center at 18884228737. This process allowed the effective industrialization of sulfuric acid production. This report contains a detailed design proc edure of a plant to manufacture sulfuric acid from sulfur, as followed by group 01 as per the allocations of ch 4202 comprehensive design project09. It raw water is used scaling will be deposit at heat exchanging areas. Manufacture of sulphuric acid by contact process youtube.
The contact process the contact process is the chemical process used to make sulfuric acid. British vinegar merchant peregrine phillips patented the contact process, which. This fact sheet is one in a series of summaries about hazardous substances and. In the usual contact plants 9798% of the so2 is oxidized to so3 while the.
1320 582 1320 1319 1560 351 1522 500 1119 631 690 393 476 320 1313 145 315 636 783 1182 300 230 975 595 38 963 1006 671 594