Synthetic ammonia process flow

Synthetic ammonia process: raw material preparation, purification, compression, heating, catalytic reaction, cooling separation, ammonia extraction and storage.

1. Raw material preparation: The main raw materials for synthetic ammonia are hydrogen and nitrogen. Hydrogen usually comes from the processing of natural gas or oil, while nitrogen comes from air.

2. Purification: Before ammonia synthesis, hydrogen and nitrogen need to be purified to ensure the reaction efficiency and product quality. The purification process includes impurity removal, drying and dust removal.

3. Compression: It is necessary to compress the purified hydrogen and nitrogen to increase their pressure and provide necessary conditions for subsequent reactions.

4. Heating: Before the compressed gas is sent into the reactor, it needs to be heated to raise its temperature and provide necessary energy for the reaction.

5. Catalytic reaction: the heated hydrogen and nitrogen are sent into the reactor, and under the action of catalyst, catalytic oxidation reaction occurs to generate ammonia gas.

6. Cooling and separation: the ammonia gas generated by the reaction needs to be cooled and separated from unreacted gas to obtain pure ammonia gas.

7. Extraction and storage of ammonia: The separated ammonia is extracted and stored for subsequent use or sale.

Brief introduction of synthetic ammonia

Synthetic ammonia refers to ammonia directly synthesized by nitrogen and hydrogen in the presence of catalyst at high temperature and high pressure, which is a basic inorganic chemical process. In modern chemical industry, ammonia is the main raw material for chemical fertilizer industry and basic organic chemical industry.

The synthetic ammonia industry was formed in the early 20th century, and began to use ammonia as the raw material of explosive industry to serve the war. After World War I, it turned to serve agriculture and industry. With the development of science and technology, the demand for ammonia is increasing. Without catalyst, the activation energy of ammonia synthesis is very high, about 335kJ/mol. After adding iron catalyst, the reaction is divided into two steps: nitridation and nitrogen hydrogenation.