Large-scale joint alkali-making circulation process

Abstract

The invention relates to a large-scale joint alkali-making circulation process. The process comprises the following steps: a. obtaining an alkali-making raw material by an infiltration alkali extraction method; b. obtaining hydrogen sulfide and methane by utilizing microbial resource in an alkali halide; c. evaporating and concentrating a thin alkali liquid by utilizing natural energy; d. obtaining various types of products by combining a natural alkaline method and a chemical combination method; e. obtaining subsidiary products by combing coal chemical industry deep processing and an alkali-making process; and f. obtaining series of products by combining an electrolytic process and a chemical combination method. The large-scale joint alkali-making circulation process has the beneficial effects that natural alkali waste resource and hidden resource are excavated for raw material supply, biological energy and natural energy are comprehensively utilized so as to realize energy utilization, potential of coal chemical industry deep processing is developed and an activated carbon purification technology is applied to low carbon economy so as to achieve the purposes of energy conservation and environmental friendliness so that technologies in various fields are tightly integrated with the alkali-making process, thus fundamentally realizing large-scale joint alkali-making circulation and greatly lowering the alkali-making cost.

Description

technical field [0001] The present invention relates to a combined soda production cycle process combining trona method and chemical method, in particular to soda mining technology for infiltration of intersand crystals in mining trona residual poor ore deposits, underground brine anaerobic digestion technology for hydrogen sulfide and biogas production, Natural energy evaporation technology, forced crystallization, forced chemical combination technology, multi-chemical conversion technology, multi-functional gasification technology, carbon dioxide recovery and utilization technology and coal chemical deep processing technology are the main components of the combined alkali-making large cycle process. Background technique [0002] The production of soda ash is widely used at present by trona method and chemical method. The chemical method is divided into ammonia-soda method and combined soda-making method. The ammonia-soda method uses refined salt as a raw material, which i...

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Problems solved by technology

[0003] From the comprehensive analysis of the soda-making technology and soda-making process currently used all over the world, the trona method has certain advantages because of its relatively simple procedure and relatively short production cycle. However, its raw material selectivity is limited and the liquid evaporation intensity is large. The reality of high energy consumption makes

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