Pulp Digester Advantages
- Custom digesters include 50m3, 75m3, 110m3, 135m3, 175m3, 225m3, 250m3 and 400m3
- Both apply for kraft process and sulfite process.
- Batch and continuous digester are available.
- ISO, CE certified.
Digester, or pulp digester, is a huge vessel for chemical pulping and dissolved fiber steaming section. As we know, the digester is used for cooking raw materials of paper pulp like wood, grasses, bamboo, and other sources, these raw materials react with a chemical liquid and get the paper pulp that is mostly composed of cellulose. Then, the paper pulp can be sent to washing bleaching system and applied to papermaking processing.
We can manufacture various specifications of digesters, range from 50m3 to 400m3 digesters. The maximum size of the digester is 5.8m in diameter and 400m3 in volume. As a leading manufacturer of the digester, CNBM’s digesters have been extensively used in China. For the quality of digester, our digester can compare favorably with similar productions made by GLV or other famous international companies of chemical pulp production line equipment.
For the different pulping processing, there are two types of the digester in the chemical pulping productions: vertical digester and horizontal digester.
The vertical digester is mostly for the supper batch cooking. We adopt the most advanced batch cooking technology-displacement cooking process, which requires low cost and gets the high-quality pulp.
Displacement digester specifications:
|Effective volume (m³)||110||135||175||225||250||330||400|
|Diameter (internal) (mm)||3600||4000||4500||4500||4500||5600||5800|
|Design temperature (℃)||180/240|
The horizontal digester is the core part of the continuous cooking system. This kind of digester is mainly designed for grasses like bagasse, wheat grass, and straw, etc.
As the main equipment in the chemical pulping processing, how does the digester work?