Pulp digester for paper making
This debarking drum rotates and strips all of the bark away from the logs. In addition, the quality of the paper would suffer without the benefit of being cooked and treated in the digester.
Meanwhile, relevant chemical consumption drops down, which can not only reduce the environmental pollution, but also lower the paper cost. The lower conical part has a direct steam-through entrances to connect the discharging valve. It can be used for both chemical pulping and chemi-mechanical pulping applications.
This method has been patented. The vertical cooking digester comprises a digester body, a circulation system and a supporting seat. These raw materials react with a chemical liquid and get the paper pulp, which is mostly composed of cellulose. The sulphite digester utilizes calcium acid sulphite to aid in the process, which is usually referred to as the acid process.
On its inner wall, there is a cylindrical filter and liquid suction port installed. It applies for bamboo pulp or wood pulp with 50-300 thousand tons annual output. Here, the logs are reduced to handheld sized chip pieces.
Entering the Digester
After the logs are made into wooden chips, they are placed inside the digester where they are chemically cooked for several hours in order to make them softer.
First, the harvested trees are cut into logs. According to your requirements, we can customize paper pulp cooking digesters in different size and in different materials.
Hot black liquor tank, warm black liquor tank, cold black liquor and a variety of heat exchangers with different technologies. High quality papers can be produced with the chemical pulping method, as most of the lignin and hemicelluloses remained in the wood, are dissolved in the Kraft cooking.
pulp cooking digester
paper pulping machines
CNBM provides you with paper pulp equipment all-around
HOME > products > paper pulping machines
- We customize varied size of digesters, including 50M3, 75M3, 110M3, 135M3, 175M3, 225M3, 250M3 and 400M3.
- Our paper pulp cooking digester can reduce the steam consumption from 2-2.5tons to 0.6-0.8ton for per ton pulp.
- High oxygen delignification effectiveness.
Your privacy is protected. Meanwhile, super batch cooking production line can reduce SO2 emission (sulfur dioxide) and soot aggregates from the alkali recovery boiler by 15%. Low relevant chemical consumption.
CNBM pulp cooking digester is a kind of batch chemical pulp equipment, mainly used for cooking wood, bamboo, Di, reed and other fiber raw materials.