How to crack sulfuric acid in waste acid cracking furnace?
2019-12-25
Concentrated sulfuric acid is a very acidic chemical raw materials, but concentrated sulfuric acid has a very wide range of applications in industry, however, in the use of industrial sulfuric acid, will inevitably produce a large amount of waste sulfuric acid, its concentration and acidity is also very strong, so we need awaste acid cracking furnaceTo treat these waste sulfuric acid, the waste acid cracking furnace includes a furnace body, and the furnace body is sequentially provided with a combustion section, a waste acid decomposition section, and a sulfur trioxide conversion section from left to right, which can effectively carry out the waste sulfuric acid cracking and convert the waste sulfuric acid into pollution-free substances.
waste sulfuric acid crackingIt is a strong endothermic reaction, the reaction temperature is about one thousand degrees, and the reaction temperature can be maintained by adjusting the feed of fuel and air in the cracking furnace. The combustion value of natural gas is relatively high and easy to fully burn. Therefore, the use of natural gas as fuel is the first choice for mainstream cracking furnaces. However, natural gas will produce a large amount of water vapor after combustion, which is easy to cause equipment corrosion and has a large amount of sewage. Therefore, it has become a research and development hotspot in recent years to replace natural gas with sulfur containing water after combustion as cracking fuel.
The waste acid cracking furnace is used to discharge waste acid from the alkylation unit of cracking high-grade gasoline. The waste acid is atomized into the furnace through a spray gun. Under the action of high temperature in the furnace, the waste acid is cracked and evaporated, and the organic matter in the waste acid is burned. Finally, it becomes a gas containing sulfur dioxide, and then this gas is used to produce sulfuric acid or liquid sulfur dioxide. The waste acid cracking furnace is made of a steel shell lined with heat-resistant materials. In order to strengthen the cracking and combustion effects, multiple retaining walls are installed in the furnace.
With the increase in the use of sulfuric acid in China, industrial production is increasingly inseparable from chemical raw materials, and at the same time will produce more waste acid. Therefore, the application prospect of waste acid cracking furnace is very broad.
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