Issue 47/2014 - Zotye ammonia recovery switched to phosphoric acid absorption

A few days ago, the ammonia recovery process equipment technology upgrading project of Zotye Coal Coking Company passed the completion and acceptance of the safety facilities of the expert group of the Xinjiang Uygur Autonomous Region Work Safety Supervision and Administration Bureau, and has met the formal production conditions
.
Zotye Coal Coking became the only enterprise
in the autonomous region to produce anhydrous ammonia by phosphoric acid absorption method.

Zotye Coal Coking upgrades the original water washing ammonia process to the phosphoric acid absorption method to produce anhydrous ammonia, uses 75% of phosphoric acid to absorb the ammonia in the coke oven gas, and forms anhydrous ammonia after desorption and distillation, which not only realizes the cascade utilization of energy, but also effectively reduces resource consumption
.
The project can process coke oven gas 33000m3/h and produce anhydrous ammonia 2180t/a
.
Anhydrous ammonia products not only have a variety of uses in medicine, refrigeration and other aspects, but also an important raw material for the manufacture of fertilizers and nitric acid, and have broad development prospects
.

In addition, the upcycling project is also more conducive to the operation of the crude benzene system, which greatly improves the recovery rate
of crude benzene.
After the project is completed and put into use, it can reduce about 9.
3 tons of pollutants discharged into the atmosphere, which is equivalent to saving 3,202 tons of standard coal, increase the output value of the enterprise by 8.
5 million yuan per year, and achieve low-cost green production
on the basis of energy conservation and emission reduction.
(New)