Method for preparing large-particle baking soda by secondary carbonization method and obtained baking soda

Abstract

The invention provides a method for preparing large-particle baking soda by a secondary carbonization method and the obtained baking soda. The method comprises the following steps of: 1) taking a sodium carbonate solution, and performing purifying; 2) enabling the solution to enter the upper part of a pre-carbonization tower, and carrying out pre-carbonization reaction with carbon dioxide gas; 3)discharging the pre-carbonized solution from the bottom of the pre-carbonization tower, and performing cooling; 4) feeding the solution obtained in step 3) into the middle part and the upper part of the carbonization tower in a multi-strand manner, feeding carbon dioxide into the middle part and the lower part of the carbonization tower in a multi-strand manner, and carrying out carbonization reaction to generate baking soda crystal mush; 5) compressing the carbon dioxide tail gas exhausted from the top of the carbonization tower, and enabling the compressed carbon dioxide tail gas to enter the lower part of the pre-carbonization tower; and 6) discharging the baking soda crystal mush from the bottom of the carbonization tower, and performing separating and drying to obtain baking soda. Large-particle baking soda is obtained through pre-carbonization, cooling and carbonization in the carbonization tower in a multi-strand feeding and multi-strand air inflow mode, and the yield of the baking soda is increased; the pre-carbonization tower absorbs the tail gas of the carbonization tower, so that the utilization rate of carbon dioxide is increased, and the economic benefit is good.

Description

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AI Technical Summary

Benefits of technology

The present in this patented technology describes methods for making small diameter (_{3/cm) carbonizable materials called BCDS that have improved efficiency compared to existing techniques such as chemical vapor deposition. By controllably adjusting certain parameters during heat treatments, these smaller sizes result in more uniformly distributed carbon structures than previously possible. These properties allow for better use of CO2. Additionally, it provides technical means for efficiently extracting valuable products from waste streams containing C02 emissions. Overall, the process involves three steps - firstly prone carbonsizing followed by carbonification, then post-treatment at temperatures below 250°C to improve conversion rates.}

Problems solved by technology

Technological Problem: Current Method For Preparating Bake Spinning Solutions Using Natural alkalis involves multiple steps including dissolution into water followed by filtering or centrifugal separation processes that increase costs compared to traditional ways like producing grades from other sources. Additionally, current Crystallizable Grinding Stabilizers are expensive due to their high cost per gram of soluble calcium salt produced during manufacturing.

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