Ammonia production device and production method for soda production industry

Abstract

The invention provides a preparation device and a preparation method of ammonia for an alkaline industry. The device comprises a housing provided with a feed port, a discharge port and a gas outlet, and a conveying part arranged in a material conveying channel between the feed port and the discharge port, wherein the conveying part be driven by a power device to guide a material at the feed port to the discharge port in a rolling manner; the device further comprises a plurality of reaction sections arranged in a conveying direction of the material conveying channel, heating parts and cooling parts; the heating parts and cooling parts correspond to the reaction sections and are arranged on the housing; and each heating part and each cooling part divide each reaction section into at least one high temperature reaction section and at least one low temperature reaction section. The preparation device of the ammonia for the alkaline industry can increase a reaction rate of the material, andimprove a production effect; at the same time, the conveying part conveys the material forwards in a rolling manner, so that a contact effect of intermediate parts can be improved; and the reaction rate can be further increased.

Description

technical field [0001] The invention relates to the technical field of inorganic chemical industry, in particular to an ammonia production device used in the soda production industry. Background technique [0002] At present, the production of soda ash in our country is mainly produced by the ammonia-soda method in industry, but the utilization rate of sodium chloride in this process is low, and a large amount of ammonia-soda waste liquid will be produced by-product. Its components are mainly calcium chloride and sodium chloride. At present, there is no economical and effective treatment method. Wang Jun and others developed and proposed "a method for producing soda ash without waste liquid discharge ammonia cycle" ZL201310733182.9, The high-temperature coupling reaction of ammonium chloride and calcium carbonate provides a new idea for the green economic development of the soda ash industry. Its chemical formula is NH 4 Cl(s)+CaCO 3 (s)=CaCl 2 (s)+NH 3 (g)+CO 2 (g)+H ...

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Problems solved by technology

[0002] At present, the production of soda ash in our country is mainly produced by the ammonia-soda method in industry, but the utilization rate of sodium chloride in this process is low, and a large amount of ammonia-soda waste liquid will be produced by-product. Its components are mainly calcium chloride and sodium chloride. At present, there is no economical and effective treatment method. Wang Jun and others developed and proposed "a method for producing soda ash without waste liquid discharge ammonia cycle" ZL201310733182.9, The high-temperature coupling reaction of ammonium chloride and calcium carbonate provides a new idea for the green economic development of the soda ash industry. Its chemical formula is NH 4 Cl(s)+CaCO 3 (s)=CaCl 2 (s)+NH 3 (g)+CO 2 (g)+H 2 O(g), part of the NH in the above reaction 4 Cl(s) decomposes into NH 3 (g) and HCl(g), while HCl(g) and CaCO 3 (s) Reaction to generate CaCl 2 , since in this reaction part of NH4Cl(s) will be directly sublimated into NH 4 Cl(g) cannot be compared with CaCO 3 (s) react, and because the contact effect between each material is unsatisfactory, thereby also can produce intermediate product HCl, not only cause the waste of resources, also can influence follow-up alkali-making operation

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