Technology for preparing ryegrass slurry by pharmaceutical soak without boiling

Abstract

The present invention is one digestion-free wheat straw-soaking pulp making process. The present invention treats wheat straw and similar papermaking material with the soaking chemical comprising sulfur 20-50 weight portions, magnesium carbonate 10-30 weight portions, aluminum hydroxide 10-30 weight portions and magnesia 30-60 weight portions. During soaking, the material consists of wheat straw in 100 weight portions, sodium hydroxide 5-15 weight portions, hydrogen peroxide 1-5 weight portions, the soaking chemical 0.1-1 weight portions and water 60-85 weight portions. Compared with traditional digesting pulp making process, the present invention has simple technological process, low production cost, high pulp quality, no waste water exhaust, high pulp yield and other advantages.

Description

1. Technical field

[0001] The invention relates to the technical field of papermaking, in particular to a pulping process of soaking wheat straw without cooking. 2. Technical background

[0002] my country is rich in wheat straw resources and has a long history of using wheat straw to make paper. At present, there are two types of wheat straw cooking equipment: steam ball intermittent cooking and horizontal tube continuous steaming. Law. Generally, the sulfate method is not used, and the final by-product of the process is colloidal black liquor, which accounts for more than 80% of the total papermaking pollution. At present, black liquor, the pollution source of wheat straw pulping, is still a major problem in the field of environmental protection in the world.

[0003] The traditional ball steaming pulping method generally adopts high alkali and high temperature pulping method. In the process of wheat straw balling, although the wheat straw has been dedusted and screened,...