1. Basic equipment:
Paper machine, pulp preparation equipment, loss of paper equipment, pulp pumps, pumps, plants, pulp tanks, water intake equipment (groundwater or surface water such as rivers), etc.
2. EIA requirements, the need to prepare the equipment:
Transformers, steam pipes or boilers, sewage treatment equipment, etc.
Pulp mill equipment:
Paper mill equipment:
Paper machine equipment:
The pulp mill equipment is the most important equipment for pulp mills.
The equipment required by the EIA: transformers, steam pipes or boilers, sewage treatment equipment.
Paper machinery
It is the machinery that includes raw material preparation, pulping, papermaking, until the finished product is made into rolls or sheets, as well as the processing of paper and cardboard.
Paper need to introduce the equipment:
Preparation equipment
Paper raw materials in the cooking or grinding before, according to the cooking or grinding process requirements for pretreatment and processing equipment, divided into non-wood fiber preparation equipment and wood fiber preparation equipment. The former has a grass cutter, reed cutter and cane pith remover, etc., the latter has a peeling machine, chipper, etc..
Chipping machine is the production of wood pulp required for the logs chipped into certain specifications of the wood chips of the machine, divided into two types of disk and drum; digester is the lignin dissolved in the cooking liquid in the raw materials of paper, so that the raw materials of paper for the separation of the fiber equipment, divided into two categories of intermittent and continuous; mill is the production of wood pulp grinding equipment, according to the production mode can be divided into two categories of intermittent and continuous, according to the log pressurization mode and can be divided into hydraulic pressurization and mechanical pressurization. Divided into hydraulic pressurized and mechanical pressurized two categories;
Pulping equipment
Pulping equipment used in the process of separating plant materials into fibers. Pulping method can be divided into chemical, mechanical and chemical-mechanical method, the corresponding pulping equipment, including digester, wood grinder, hot mill, washing machine, bleaching machine, pulping machine and waste liquid recycling equipment.
The wood slices by steam preheating, and then in the high-pressure state of the grinding of the pulp is called hot wood chips grinding wood pulp, manufacturing hot wood chips grinding wood pulp machine is the hot mill, hot mill power consumption is very large, so make full use of the thermal energy in the grinding process is the key issue of the hot mill; pulp washer is the cooking of the pulp and the separation of the black liquor machinery and equipment, according to the extraction of black liquor extraction rate points, there are high-concentration and low concentration of the extracted Two categories.
The purpose of pulp bleaching is to remove the residual lignin and pigment in the pulp after cooking, improve the whiteness of the pulp, so that the pulp has a white color. Bleaching machine is a commonly used bleaching equipment, which consists of bleaching pool spiral propeller, washing drum and other components. Pulp and bleaching agent in the pool and constantly add washing water, with the help of the role of the spiral propeller in the pool circulation flow, to complete the process of mixing and chemical reaction. With bleaching products and residual bleach water through the drum cavity discharge, so that the pulp to get white.
Paper machine
Paper machine
is a complete set of equipment to make the pulp to form the paper web of the branch linkage, including the pulp box, net section, press section, drying cadres, calendering machine, paper roll machine, as well as the transmission section of the main machine and the steam, water, vacuum, lubrication, heat recovery and other auxiliary systems. Formation of wet paper web net is the core of the paper machine, so the paper machine according to the structure of the net can be divided into long net paper machine, clip net paper machine and round net paper machine.
Fluid pulp box is the appropriate concentration of pulp through the pulp cloth, rectifier, weir pool, weir plate nozzle and other parts of the uniform and stable to the network of equipment, also known as the net before the box; pulp from the flow of the box after the injection to the copper network, the formation of wet paper on the net and dehydration; after the press, that is, the mechanical method of extrusion of wet paper from the net out of the water, to improve the dryness of the paper, and at the same time, to improve the surface properties of the paper, to eliminate the net marks and the dewatering of the paper, and to improve the dryness of the paper. The surface properties of the paper, eliminate net marks and increase the smoothness, tightness and strength; and then into the drying section of the dryer, so that after pressing the wet paper after further dewatering
Paper machinery with a drying cylinder cast iron drying cylinder pressure roller, so that the paper contraction, fiber bonding tight and increase strength.
Paper from the drying cadres out of the calender calendering machine can improve the smoothness, gloss and tightness of the paper, so that the thickness of the whole width of the paper is consistent, and to reduce the degree of air permeability; and finally by the roll paper machine will be rolled into a roll of paper, that is, the completion of the main process of papermaking. In order to adapt to the different needs of the future, after the paper machine in the paper workshop roll paper machine also has a super calender, rewinding machine, paper cutter and so on.