Super Batch Cooking

A: As producing one ton of pulp, traditional equipment needs about 2 tons-2.5 tons of steam consumption. Compared with it, the batch cooking process equipment can reduce the consumption greatly down to 0.6 ton-0.8 ton.
B: Pulp lignin Removing, low Kappa value and high strength of paper.
C: High-quality of pulp bleaching, due to low kappa value, high strength, etc., oxygen delignification, good production environment, at the same time, chemicals drop in usage gradually so as to lower the pollution and papermaking costs.
D: The whole production process adopts automatic control. The system reliability is improved greatly, and the pulp quality is stable and reliable.

Super batch cooking is a new pulping technology developed on the basis of RDH cooking system. Super batch cooking adheres to the advantages of RDH and improves several technical issues in the RDH process. One of them is that the system has a strong and stable tank area, which is achieved by adding special partitions in the hot and warm black liquid tank. The other is advanced control technology, such as simulated predictive control (MPC), multivariable control, etc., which reduces the impact on cooking operations.
The super batch cooking operation process includes several steps, including loading, primary cooking, middle cooking, final cooking (heating/insulation), recovery, and digester placement.

Digester: 50m'，75m'，110m'，135m'，175m’，225m’，250m'，330m’and 400m' . According to different processes, main manufacturing materials are carbon steel, stainless steel. composite board and duplex stainless steel.

Blow Tank: 80m’，150m³，225m’，330m³，500m³，1050m³ and 1800m³ . According to different processes, main manufacturing materials are carbon steel, stainless steel, composite board and duplex stainless steel.

Vacuum Washer: 30m² ，45m²,60m²,80m²,100m²and 120m² . According to different technologies, main manufacturing materials are carbon steel and stainless steel.

Replacement Tank: hot black liquor tank, hot white liquor tank, warm black liquor tank,cold black liquor tank, various heat exchangers. According to different requirements,main manufacturing materials are carbon steel, stainless steel and duplex stainless steel.