Baking soda production anti-caking process and apparatus

Abstract

The present invention discloses a baking soda production anti-caking process and apparatus, and the main feature is that in the production process of baking soda, the dried baking soda is not directly packaged, first, agglomerates in the material are crushed by a cyclone sieve, meanwhile large particles are sieved out, the sieved material enters into a powder flow cooler for cooling and packaging. The dried baking soda is first crushed by the cyclone sieve, then cooled by the powder flow cooler, and packed, the finished baking soda agglomeration phenomenon can be eliminated; by selection of the cyclone sieve, while sieving, agglomerates formed in the drying process can be crushed, compared with a loud noise vibrating screen, the work environment is favorable to the health of an operator; the powder flow cooler has a simple structure, high heat transfer efficiency, low energy consumption, no damage of crystalline particles, no pollution emissions, low operation and maintenance costs, small floor space and other advantages; the produced baking soda product has high quality, is not contaminated, and fully meets food grade requirements.

Description

technical field [0001] The invention relates to an anti-caking device and process for producing powdery and granular materials, in particular to an anti-caking process and device for producing baking soda. Background technique [0002] Baking soda agglomeration is always a technical problem that is difficult to solve. The reasons for baking soda agglomeration include too fine crystal particle size, too high temperature during packaging after drying, stacking and compaction after packaging, etc. Among them, the temperature after drying is too high, Failure to dehumidify and pack immediately is the main cause of caking. [0003] In the traditional baking soda production process, the baking soda is dried and sent to the silo for direct packaging. In the production process, the drying of the baking soda should not only ensure that there is no wet material, but also prevent the decomposition of the baking soda from increasing the alkalinity. It is difficult to accurately control...

AI Technical Summary

Problems solved by technology

[0003] In the traditional baking soda production process, the baking soda is dried and sent to the silo for direct packaging. In the production process, the drying of the baking soda should not only ensure that there is no wet material, but also prevent the decomposition of the baking soda from increasing the alkalinity. The process indicators of soda drying post are difficult to control accurately, so the finished product of baking soda often appears agglomerated

[0004] CN202137111U discloses a screening mechanism, which is used to screen the dried baking soda and filter out the agglomerates to improve the quality of powdered baking soda. Sending it directly into the packaging process after being powdered has a certain effect on reducing the agglomeration in the finished product, but it is limited to filtering the agglomerated, but cannot prevent subsequent agglomeration, and has not fundamentally solved the agglomeration of baking soda The problem

[0006] Traditional coolers include fluidized bed or soda cooler. In the article "Measures to Prevent Baking Soda Caking", Fan Hairong et al. proposed adding a cooling device during the production process to prevent the material from caking after the fluidized bed is cooled and dried. The technology can play a certain role in preventing baking soda from agglomerating, but because the cooling medium of the fluidized bed is air, and it is in direct contact with the material to exchange heat, the air must be purified to remove impurities in the air and prevent dusty air from affecting Secondary pollution of the product, and the process has complex structure, high energy consumption, difficult operation and control, and poor product quality

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