Sodium carboxymethyl cellulose (also known as carboxymethyl cellulose sodium salt, carboxymethyl cellulose, CMC for short) was successfully developed by Germany in the early 20th century, and has now become the most widely used and used fiber in the world. Vegetarian species. Sodium carboxymethyl cellulose is known as “industrial monosodium glutamate”, and its downstream applications are extensive. According to specific needs, it is divided into industrial grade, food grade and pharmaceutical grade. The main demand areas are food, medicine, detergents, washing chemicals, tobacco, papermaking, sheet metal, building materials, ceramics, textile printing and dyeing, oil drilling and other fields. It has the characteristics of thickening, bonding, film forming, water retention, suspension, emulsification and shaping, and is used in corresponding fields.
There are two main manufacturing methods of CMC: water-based method and organic solvent method. The water-based method is a kind of elimination process a long time ago. The existing water-based method production plants in my country mostly use the traditional method, and most of the other processes use the kneading method in the organic solvent method. The main product indicators of CMC refer to purity, viscosity, degree of substitution, PH value, particle size, heavy metal and bacterial count, among which the most important indicators are purity, viscosity and degree of substitution.
Judging from the statistics of Zhuochuang, there are many manufacturers of sodium carboxymethyl cellulose in my country, but the distribution of the manufacturers is scattered. The production capacity of large-scale manufacturers accounts for a large proportion, and there are many small and medium-sized enterprises, mainly located in Hebei, Henan, Shandong and other places. . According to the incomplete statistics of Zhuochuang, the total production capacity of sodium carboxymethyl cellulose in my country has exceeded 400,000 tons/year, and the total output is about 350,000-400,000 tons/year, of which one-third of the resources are used for export consumption, and the remaining Resources are digested domestically. Judging from the new additions in the future according to Zhuo Chuang’s statistics, there are not many new enterprises of sodium carboxymethyl cellulose in my country, most of which are expansion of existing equipment, and the new production capacity is about 100,000-200,000 tons/year.
According to customs statistics, carboxymethyl cellulose sodium salt imported a total of 5,740.29 tons in 2012-2014, of which the largest import volume in 2013 reached 2,355.44 tons, with a compound growth rate of 9.3% in 2012-2014. From 2012 to 2014, the total export volume of sodium carboxymethyl cellulose was 313,600 tons, of which the largest export volume in 2013 was 120,600 tons, and the compound growth rate from 2012 to 2014 was about 8.6%.
According to the main downstream application industries of sodium carboxymethyl cellulose, Zhuochuang has subdivided food, personal washing products (mainly toothpaste), medicine, papermaking, ceramics, washing powder, construction, petroleum and other industries, and given according to the current market consumption The relevant proportions are divided. The downstream of sodium carboxymethyl cellulose is mainly used in the washing powder industry, mainly in synthetic washing powder, including laundry detergent, accounting for 19.9%, followed by the construction and food industry, accounting for 15.3%.