Specialized machinery and equipment for pulp and paper making; general chemical machinery and equipment; water conservancy machinery and equipment; environmental protection machinery and equipment, etc.
Types of pulp and paper making machinery and equipment:
1. Conveying equipment (high power consumption, accounting for more than 20% of the total plant)
Raw material conveying: belt conveyors, pneumatic conveyors, feeding screw conveyors
b. Pulp conveying: Low, medium, and high consistency pulp pumps; medium and high consistency mixers
c. Chemical transport: water pumps, fans, and liquid chemical pumps
2 Container Classes
Chemical reaction equipment: cooking vessel (pot), bleaching tower, absorption tower
b. Mixing and storage equipment: slurry pump, slurry storage tank, elevated tank, metering tank
Specialized material handling equipment: headbox, deinking tank, boiler, alkali recovery, etc.
d. Drying cylinders and paper roll cylinders are thick-walled containers, and hydraulic pulpers also belong to this type.
3. Roller types: breast roll, board roll, drive roll, flat roll, paper feed roll, guide roll, press roll, calender roll, winding roll
4. Filter screens and sieves: (equipped with filter screens, dewatering screens, or sieve plates) Raw material screening equipment, raw material dust removal equipment, pulp screening and concentration equipment.
5. Centrifugal disc mills: Pulping machines, disc mills, thermal dispersers, etc., and slag removers also belong to this category;
Traditional timber preparation processes include: peeling, sawing to remove knots and splitting, chipping, and screening;
The purpose of preparing grass raw materials is to provide grass of a certain length for cooking, and to remove some or most of the ears, nodes, pith, grains, as well as some dust, sand, and gravel mixed in with the grass.
Traditional material preparation methods for impurities: Dry material preparation, the basic operations of which include cutting, demedullary removal, dust removal, screening, and dust and gas treatment.
General dust removal methods: First, gravity sedimentation, then two-stage treatment. The first stage uses a cyclone separator, and the second stage uses a water film dust collector. The reason for peeling the bark is that the bark has a low fiber content and a lot of ash and impurities. The presence of bark has an adverse effect on the pulping process.
