Post Date: 28,Mar,2022

Lignin is second only to cellulose in natural reserves, and is regenerated at a rate of 50 billion tons every year. The pulp and paper industry separates about 140 million tons of cellulose from plants every year, and obtains about 50 million tons of lignin by-products, but so far, more than 95% of the lignin is still directly discharged into rivers or rivers as “black liquor”. After being concentrated, it is burned and rarely used effectively. The increasing depletion of fossil energy, the abundant reserves of lignin, and the rapid development of lignin science determine the sustainable development of the economic benefits of lignin.

The cost of lignin is low, and lignin and its derivatives have various functionalities, which can be used as dispersants, adsorbents/desorbers, petroleum recovery aids, and asphalt emulsifiers. The most significant contribution of lignin to human sustainable development lies in Provide a stable and continuous source of organic matter, and its application prospect is very broad. Study the relationship between lignin properties and structure, and use lignin to make degradable and renewable polymers. The physicochemical properties, processing properties and technology of lignin have become obstacles to the current research on lignin.

Lignin sulfonate is made from sulfite wood pulp lignin raw material through concentration, replacement, oxidation, filtration and drying. Chromium lignosulfonate not only has the effect of reducing water loss, but also has diluting effect. At the same time, it also has the characteristics of salt resistance, high temperature resistance and good compatibility. It is a diluent with strong salt resistance, calcium resistance and temperature resistance. The products are widely used in freshwater, seawater, and saturated salt cement slurries, various calcium-treated muds and ultra-deep well muds, which can effectively stabilize the well wall and reduce the viscosity and shear of the mud.

Physical and chemical indicators of lignosulfonate:

1. The performance remains unchanged at 150~160℃ for 16 hours;

2. The performance of 2% salt cement slurry is better than that of iron-chromium lignosulfonate;

3. It has strong anti-electrolyte ability and is suitable for all kinds of mud.

This product is packaged in a woven bag lined with a plastic bag, with a packaging weight of 25 kg, and the packaging bag is marked with the product name, trademark, product weight, manufacturer and other words. Products should be stored in the warehouse to prevent moisture.