The exact method of preparing pulp liquor varies depending on the chemicals used and the operating procedures, but the following is a common method:
Determine the type and amount of bleach used, such as chlorine, sodium hypochlorite, hydrogen peroxide, etc.
Add the bleaching agent to a certain amount of water and stir well to make a bleaching solution.
Add the pulp to be treated into the bleaching solution, and adjust the pH value, temperature and other parameters of the bleaching solution as required.
Within a certain period of time, the pulp bleaching liquid is continuously stirred to fully react the bleaching agent with the pulp.
The bleached pulp bleaching liquid is filtered or centrifuged to separate the bleached cellulose pulp and bleaching waste liquid.
Treatment of bleaching waste liquid, such as neutralization, precipitation, filtration and other methods, to remove pollutants and meet discharge standards.
NBCHAO reminds you: In the process of preparing pulp bleaching liquor, different operating procedures and parameter adjustments should be carried out according to different bleaching agents and pulp types. At the same time, pay attention to safe operation to avoid chemicals causing harm to the human body.
