Preparation of furfural Corn kernel contains 33% to 36% […]
Preparation of furfural Corn kernel contains 33% to 36% of cellulose, 32% to 40% of polypentose, 11% to 19% of lignin, and 5% to ash. It is a good raw material for the manufacture of furfural and carboxymethyl cellulose and xylitol. Among agricultural and sideline products, plant materials containing hemicellulose components, such as stems, cottonseed hulls, rice husks, bran, peanut shells, sunflower seed shells, bagasse, straw, sorghum straw, etc. Furfural can be produced. In the northern part of China, the use of corncob as a raw material for furfural has universal practical significance. As an important organic chemical raw material, furfural is widely used.
It has more than 1,600 kinds of chemical products directly and indirectly synthesized. It can be applied to synthetic resin, synthetic fiber, synthetic rubber, medicine, pesticide, petroleum refining and dye. , spices, paper and other industries. It is an important industry with sustainable development with broad development prospects. The principle of manufacturing furfural is that polypentose can be hydrolyzed into pentose sugar at a certain temperature and 5% dilute sulfuric acid, and pentose can be further dehydrated to obtain a kind of Clear yellowish liquid - furfural. The yield was 8.1% for corn cob, 5.5% for cottonseed hull, and 2.6% for rice husk.