Baking soda (sodium bicarbonate), small white crystals, less soluble in water than sodium carbonate. It is also an industrial chemical that begins to decompose gradually above 50 ° C, producing sodium carbonate, carbon dioxide and water, and completely decomposes at 270 ° C.
01 Baking soda downstream industry applications
Baking soda (sodium bicarbonate) is a acidic salt formed after the neutralization of a strong base and a weak acid, and is weakly alkaline when dissolved in water. This feature makes it very versatile. The following is a brief introduction to the downstream baking soda industry:
First, food industry: mainly used as starter, soda and cold drinks carbon dioxide generator, butter preservative; In addition, baking soda is the most widely used loosening agent in the food industry, used in the production of biscuits, pastries, steamed buns, bread, etc. It can be combined with alum to form alkaline baking powder, and can also be combined with soda ash to form civil stone alkali.
2. Pharmaceutical industry: For the production of drugs for the treatment of excessive stomach acid; Used as a raw material to make acid.
Third, heat treatment of various industries: used for film production, tanning, mineral processing, smelting, metal heat treatment.
Fourth, rubber industry: use it with alum, hair hole agent to play a uniform hair hole role for rubber, sponge production.
5. Fire fighting equipment: used for the production of acid and alkali fire extinguishers and foam fire extinguishers.
6. Metallurgical industry: used as a flux for casting steel ingot.
Seven, machinery industry: used as a casting steel (foundry) sand molding aid.
Eight, printing and dyeing industry: used as dyeing printing fixing agent, acid-alkali buffer, fabric dyeing and finishing after treatment agent.
02 Application of ammonium bicarbonate in this industry
According to statistics, the current domestic baking soda (sodium bicarbonate) production capacity of 2.99 million tons, the production process is mainly divided into synthetic method (soda ash method), natural alkali method, compound decomposition method (brine ammonium carbide method) three. The first two processes are mainly soda ash (sodium carbonate) related industry production, this article will not elaborate, the last one is the use of brine (sodium chloride solution) and ammonium bicarbonate production, in this focus on this process.
Double decomposition method (brine ammonium carbide method) production of baking soda process brief introduction: Sodium bicarbonate is produced by the double decomposition method of raw salt (sodium chloride solution 25%) and ammonium bicarbonate, the reaction time is one hour, the reaction temperature is 30℃, the process does not produce three wastes, does not pollute the environment, the by-product of ammonium chloride can also be used as fertilizer, low cost, high added value, is the use of rich raw salt (sodium chloride) to produce baking soda (sodium bicarbonate), One of the possible ways. At present, the domestic production capacity of bicarbonate of soda (sodium bicarbonate) is about 350,000 tons, and the single consumption of bicarbonate of ammonium bicarbonate for the production of bicarbonate of soda is 1.2 tons, with a total annual demand of about 420,000 tons. In 2021, the actual production of ammonium bicarbonate in China is about 4 million tons, and the demand of bicarbonate of ammonium bicarbonate in bicarbonate of soda industry by compound decomposition method is 330,000 tons, accounting for about 8.2%. And because of the cost and environmental advantages of the process, in areas rich in raw salt reserves, the new planned capacity is gradually increasing, it is understood that the 2022 annual plan has been determined to put into production capacity of about 100,000 tons, it is expected that by the end of this year, the compound decomposition method baking soda capacity will reach 450,000 tons, in the case of no new capacity of ammonium bicarbonate this year, The process will consume 330,000 tons of ammonium bicarbonate, accounting for 8.25%, and the proportion of demand will further increase, which will become an important downstream industry for ammonium bicarbonate.
At present, Hualu Hengsheng ammonium bicarbonate matches a variety of packaging specifications of 50kg and 1000kg according to downstream requirements. The company has launched strategic cooperation with the leading enterprise of compound decomposition baking soda production; This year's new planning to put into operation of the enterprise has also established smooth communication channels, it is expected that after its production will link up cooperation. Hualu Hengsheng will continue to uphold the concept of "customer first choice", provide high-quality raw materials for more small soda production enterprises, and make greater contributions to the development of China's small soda industry.
