Preparing device and method for ammonia gas

Abstract

The invention discloses a preparing device and method for ammonia gas. The preparing device is used for preparing ammonia gas through a reaction of ammonium chloride and granular inorganic salt. The preparing device comprises a fluidized bed reactor, the fluidized bed reactor is provided with at least two fluidized chambers, one fluidized chamber is a preheating chamber which is used for heating the granular inorganic salt, another fluidized chamber is internally provided with at least one atomizing spray nozzle, and the granular inorganic salt forms a fluidized bed layer and is in contact with an aqueous ammonium chloride solution in the reaction chamber for a reaction to generate the ammonia gas; the granular inorganic salt can sequentially flow through multiple preheating chambers and reaction chambers under pushing of density difference of the granular bed layer, and the required conversion rate is finally reached. By means of the preparing device and method, a new idea for preparing the ammonia gas from ammonium chloride is put forward, the reaction step is simplified, and the reaction efficiency is improved.

Description

technical field [0001] The present application relates to the field of inorganic salt and soda ash chemical industry, in particular to a preparation device and method for ammonia gas. Background technique [0002] The soda ash industry produces a large amount of by-product ammonium chloride, which has become the bottleneck of the soda ash industry due to the restrictions on the application of fertilizers, and it is urgent to find a suitable utilization method. If ammonium chloride is decomposed into NH with higher economic value 3 and HCl, NH 3 It can be recycled in the soda ash industry, and HCl can also be used in many fields such as organic chlorination. Therefore, ammonium chloride is decomposed to produce NH 3 And HCl is a good way to solve the bottleneck problem of soda ash industry. [0003] Ammonium chloride can be decomposed into NH by heating 3 and HCl, but at the same time a large amount of ammonium chloride is sublimated, and the generated NH 3 It is difficu...

AI Technical Summary

Problems solved by technology

The ammonium bisulfate method and magnesium oxide, as circulating substances, need to be regenerated by heating and other methods. The process is complicated and requires more than one device to complete the above reaction, and the energy consumption is generally high

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