Vanadium Pentoxide Catalyst for Manufacture of Sulfuric Acid

SO3 to SO2 by catalytic (Vanadium Pentoxide) oxidation process was usually not separated it out but directly converted into sulfuric acid. SO3 reacts violently with water, heat to generate H2SO4, but usually no water absorption SO3, because a lot of heat for the evaporation of the water vapor and SO3 formation of acid mist will affect the absorption efficiency, so the use of concentrated sulfuric acid was prepared to absorb SO3 fuming industrial sulfuric acid, diluted sulfuric acid and then can be obtained.

Now the production of sulfuric acid method is contact method, the raw material is still pyrite. The pyrite oxidation of sulfur dioxide in the air, then Vanadium Pentoxide, iron oxide and cuprous oxide as catalyst, the oxidation of sulfur dioxide to sulfur trioxide, sulfur trioxide react with water to form sulfuric acid. The resulting 98% sulfuric acid, known as concentrated sulfuric acid.

sulfuric most important chemical industry is prepared by the contact method. The main raw material for the fuel

contact method Seoul to sulfur or iron sulfide sulfur dioxide and oxygen in the air, oxidation of sulfur dioxide to sulfur trioxide, absorption of the water, any concentration of acid can be obtained. Only then oxidized, there must be some kind of contact with the presence of starting role when; most commonly used in platinum and Vanadium Pentoxide. Spontaneous combustion of sulfur dioxide derived from it may be directly oxidized iron sulfide if spontaneous combustion burner, derived who must first drop of cold, wash them with acid or by filtration method or by the precipitation method to make clean; dust, sulfur vapor, arsenic, phosphorus and other substances were stored in the gas stream must be removed lest they harm and contact agent for impurities lighter than the platinum oxidation alum hazards.

Contact legal sulfuric acid reaction principle: burning sulfur or metal sulfide sulfur dioxide and other raw materials from the system. Sulfur dioxide in the appropriate temperature of the catalyst under the effect of oxidation of sulfur trioxide, sulfur trioxide in the compound with water to form sulfuric acid.