What is the raw material used in contact process?

Contact-process plants are of two types. The simpler type, the sulfur-burning contact plants, use sulfur as the raw material.

What is needed for the contact process?

The process can be divided into four stages: Combining of sulfur and oxygen (O2) to form sulfur dioxide, then purify the sulfur dioxide in a purification unit. Adding an excess of oxygen to sulfur dioxide in the presence of the catalyst vanadium pentoxide at 450 °C and 1-2 atm.

Which metal is used in contact process?

Platinum, ferric oxide with copper oxide and vanadium pentoxide are used as catalysts in contact process.

What are the basic raw materials for the manufacture of sulphuric acid?

Abstract – The raw material for sulphuric acid manufacture is clean SO2 gas. It comes from (i) burning molten by-product sulphur; (ii) roasting or smelting metal sulphide concentrates, and (iii) decomposing contaminated organic chemical process sulphuric acid catalyst.

What is h2so4 used for?

In various concentrations the acid is used in the manufacture of fertilizers, pigments, dyes, drugs, explosives, detergents, and inorganic salts and acids, as well as in petroleum refining and metallurgical processes.

Why is oleum made in the contact process?

Production. Oleum is produced in the contact process, where sulfur is oxidized to sulfur trioxide which is subsequently dissolved in concentrated sulfuric acid. Sulfuric acid itself is regenerated by dilution of part of the oleum.

What is the purpose of contact process?

The purpose of the Contact process is to manufacture sulphuric acid. The Contact process is used in large scale preparation of sulphuric acid in the industries.

Why is contact process preferred?

Answer Expert Verified. The contact process is used to produce sulfuric acid in the high concentrations required for industrial processes. Earlier platinum was used as a catalyst for this reaction but it is susceptible to react with arsenic impurities in the sulfur feedstock. So now vanadium oxide V2O5 is preferred.

Why is vanadium pentoxide used in the contact process?

Vanadium pentoxide is used in different, industrial processes as catalyst: In the contact process it serves for the oxidation of SO2 to SO3 with oxygen at 440°C. Besides it is used in the oxidation of ethanol to ethanale and in the production of phthalic anydride, polyamide, oxalic acid and further products.

What process is used to manufacture sulphuric acid?

Contact process
Contact process is used for the manufacture of sulphuric acid.

How is sulphuric acid manufactured by contact process?

Sulphuric acid is manufactured by the contact process. It involves the following steps:Step i:Sulphur or sulphide ores are burnt in air to form SO2. Step ii:By a reaction with oxygen SO2 is converted into SO3 in the presence of V2O5 as a catalyst. Step iii:SO3 produced is absorbed on H2SO4 to give H2S2O7 oleum.

What are uses of HCl?

Hydrogen chloride has many uses, including cleaning, pickling, electroplating metals, tanning leather, and refining and producing a wide variety of products. Hydrogen chloride can be formed during the burning of many plastics. Upon contact with water, it forms hydrochloric acid.

What is contact process in sulfuric acid manufacturing?

In this tutorial, contact process is discussed in detail. Contact process is the most widely used method of sulfuric acid manufacturing. In this method, Sulfur dioxide gas is produced by combustion of different sulfur containing materials. Crude oil contains sulfur as a minor element.

What are process contact surfaces?

Process contact surfaces: Surfaces of components that may be exposed to process fluids/solids and have the potential to transfer material into the product or onto product contact surfaces.

What is a raw material warehouse and how does it work?

A raw material warehouse focuses on the storage, transportation, distribution, and assembly of raw materials used for a manufacturers’ business. Material logistics is essential for every business, so identifying a warehouse partner that practices proper storage and management techniques is crucial.

What is the difference between product contact and process contact?

The product contact and process contact definitions are focused on product quality risks, identified as safety, quality, identity, strength, or purity. Waste or vent systems, according to the ASME BPE definitions, would be classified as nonprocess, as they would not present a risk to product quality.