The manufacturing method of liquid ammonia: 1. Overview: Liquid ammonia is an important inorganic chemical widely used in agriculture, medicine, energy, electronics, and other fields. The main manufacturing methods include ammonia synthesis method, electrolytic water method, etc. This article will provide a detailed introduction to the process principle, process, advantages and disadvantages, and application of ammonia synthesis to produce liquid ammonia
2、 Process principle: The ammonia synthesis method uses nitrogen and hydrogen as raw materials, and undergoes a synthesis reaction under high temperature, high pressure, and the action of a catalyst to generate ammonia gas. The reaction equation is: N2+3H2 ⇌ 2NH3. This reaction is reversible and requires controlling the reaction conditions to proceed in the direction of generating ammonia gas
3、 Manufacturing process
1 Raw gas preparation: Mix nitrogen and hydrogen in a certain proportion to prepare raw gas
2. Compression: Compress the raw material pressure to a certain pressure to increase the reaction rate
3. Preheating: Preheat the compressed raw gas to a certain temperature for catalyst activation
4. Synthesis: Under the action of high temperature, high pressure, and catalyst, the raw gas undergoes a synthesis reaction to generate ammonia gas
5. Cooling: Cool the reacted gas to condense ammonia into a liquid
6. Separation: Separate liquid ammonia from unreacted feed gas to obtain pure liquid ammonia
4、 Advantages and disadvantages of ammonia synthesis method for producing liquid ammonia include: easy availability of raw materials and relatively low production costs; High product purity and good quality; The production process is mature and the operation is simple. Disadvantages include: high energy consumption, requiring a large amount of energy consumption during the production process; Equipment investment is significant and requires equipment that can withstand high temperatures and pressures
5、 Application case
A chemical plant uses ammonia synthesis method to produce liquid ammonia, with an annual production capacity of 100000 tons. In the production process, by optimizing the process flow, improving the degree of equipment automation, reducing production costs, and improving production efficiency. At the same time, strengthen safety management during the production process to ensure the smooth progress of the production process. The liquid ammonia produced by the factory has stable quality and high purity, and is widely used in agriculture, medicine, energy and other fields, achieving good economic and social benefits
6、 Safety Production and Environmental Protection Requirements
1 Safety production: During the production process, strict adherence to safety operating procedures should be followed to ensure the normal operation of equipment. At the same time, it is necessary to strengthen employee safety training, enhance safety awareness, and prevent the occurrence of safety accidents
2. Environmental requirements: During the production process of liquid ammonia, a certain amount of exhaust gas, wastewater, and solid waste will be generated. Therefore, effective measures should be taken for governance to ensure compliance with emissions standards. At the same time, we should actively promote green production processes, reduce energy and resource consumption, and improve environmental protection levels
7、 Market Outlook and Expansion Direction
With the continuous development of technology, the manufacturing technology of liquid ammonia will continue to improve, and production costs will be further reduced. Meanwhile, as the application of liquid ammonia continues to expand in various fields, its market demand will also continue to increase. Therefore, the market prospects for liquid ammonia are broad. In the future, the development direction of liquid ammonia manufacturing technology will mainly focus on improving production efficiency, reducing energy consumption, and improving product purity. Meanwhile, with the continuous improvement of environmental protection requirements, green production processes will become the development trend of future liquid ammonia manufacturing technology.
