Ammonia-soda-process soda ash production process optimization system based on material balance

Abstract

The invention discloses an ammonia-soda-process soda ash production process optimization system based on material balance, and belongs to the technical field of ammonia-soda-process soda ash production. The ammonia-soda-process soda ash production process optimization system based on material balance comprises a preliming barrel and an ammonia distillation tower, the preliming barrel is connectedwith the ammonia distillation tower through a connecting pipe, the bottom of the preliming barrel is connected with a supporting base, the outer wall of the supporting base is connected with a motor,the output end of the motor is connected with a rotating shaft, and the end, away from the motor, of the rotating shaft is connected with a first bevel gear; particulate matter in the pre-liming barrel is conveyed to the top of the pre-liming barrel through the second spiral conveying blade, then the particulate matter moving to the top is conveyed into the filter screen cylinder through the firstspiral conveying blade, the particles in a solution are collected through the filter screen cylinder, equipment blockage and abrasion are avoided, and when the pre-liming barrel is cleaned, the pre-liming barrel is prevented from being blocked and abraded, only the filter screen cylinder needs to be cleaned, the maintenance time is shortened, the soda ash production capacity of equipment is further ensured, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of soda ash production by ammonia-soda method, in particular to an optimization system for production process of soda ash by ammonia-soda method based on material balance. Background technique [0002] The soda ash industry is one of the basic departments of the chemical industry. It is called the mother of industry and occupies a very important position in the national economy. Soda ash production processes mainly include ammonia soda process, combined soda process and trona production process. Said that the chemical synthesis soda production process with many applications and large production scale is the ammonia-soda method. Its process is mature and reliable, and its product quality is excellent. Moreover, this process does not need a supporting synthetic ammonia device. It has short process routes, normal temperature and pressure production, and convenient process control. , safe and reliable operation an...

AI Technical Summary

Problems solved by technology

[0003] At present, in order to fully recover the ammonia in the preheated mother liquor in the ammonia-soda method soda ash production process, milk of lime and the preheated mother liquor will be mixed during the distillation process (the preheated mother liquor refers to the carbonized mother liquor after the mother liquor combined tower in the calcination process and the distillation tower in the distillation process) The components obtained after heating and distilling twice in the upper section) are sent into the pre-ash bucket and stirred by the agitator to promote the reaction, so that the combined ammonia in the preheated mother liquor and the calcium hydroxide in the ash milk can fully react to form a blended solution. After the reaction The blended liquid enters the distillation tower and is added with steam to recycle the evaporated NH3 and carbon dioxide. Since the milk of lime and the preheated mother liquor contain a large amount of Ca2+, Mg2+, SO42-, CO32-, Cl-plasma, the inner wall of the pre-ash bucket It will generate double salt scarring with calcium sulfate as the main component, which will cause equipment blockage and wear, and be forced to stop for cleaning and maintenance, and the maintenance time will be longer, affecting the production capacity of soda ash, causing production fluctuations, and increasing maintenance and maintenance costs

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