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A kind of oil filter paperboard containing chemical fiber and its production method
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A production method and oil filtration technology, applied in the field of pulp and paper making, can solve the problems of shortened service life, poor permeability, easy corrosion and damage, etc., and achieve the effects of prolonging the life of cardboard, increasing porosity and pore size, and reducing filtration resistance.
Active Publication Date: 2018-06-26
CHINA NAT PULP & PAPER RES INST CO LTD
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Problems solved by technology
At present, the filter paper (board) used in oil purification devices is generally made of wood pulp and cotton pulp, which has poor permeability and low filtration efficiency.
In addition, since wood fiber and cotton fiber are both plant fibers, they have poor corrosion resistance. When filtering oil with an acid value exceeding the standard, the pore structure of the filter paper (board) is easily corroded and damaged. On the one hand, it will affect the filtering effect. will shorten the service life
Method used
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Embodiment 1
[0017] Put 160kg of masson pine BCTMP pulp into the pulper for pulping, and the crushed pulp enters the pulp pool through the pulp pump, and then pumps to the double disc refiner for refining to a beating degree of 30°SR. At this time, the fiber length 1.72mm, wet weight 11.3g, then add 40kg polyester fiber in the stock tank, polyester fiber length 5mm, fineness 1.5dtex, stir evenly, then add PAE and MF each 1kg, softening agent 0.2kg, mix evenly. Then use a special paper machine for oil filter paperboard to make paperboard, press at 420kPa for 1min, dry in an oven at 105°C for 5h, then cut through the center hole, trim and grind to obtain a quantitative 1500g / m 2 , a finished product with a thickness of 7mm. At this time, the porosity of the finished cardboard is 81%, the average pore size is 9.2 μm, the maximum pore size is 91.3 μm, and the air permeability is 7.5 L / m 2 s, the filtration efficiency of impurity particles with a particle size ≥ 4 μm is 95.5%.
Embodiment 2
[0019] Put 180kg of spruce BCTMP pulp into the pulper for pulping, and the crushed pulp enters the pulp tank through the pulp pump, and then pumps to the beater for beating to a beating degree of 35°SR. At this time, the fiber length is 1.64mm , wet weight 10.3g, then add 10kg each of polyester fiber and vinylon fiber to the stock tank, polyester fiber length 6mm, fineness 0.7dtex, vinylon fiber length 4mm, fineness 2.0dtex, stir evenly, then add PAE0.6kg and MF 2kg, 0.4kg of softening and expanding agent, mix well. Then use a special paper machine for oil-filtered paperboard to make paperboard, press at 400kPa for 1.5min, dry in an oven at 105°C for 4h, then cut through the center hole, trim and grind to obtain a quantitative 800g / m 2 , a finished product with a thickness of 4mm. At this time, the porosity of the finished cardboard is 84%, the average pore size is 9.4 μm, the maximum pore size is 91.5 μm, and the air permeability is 7.9 L / m 2 ·s, the filtration efficiency o...
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Abstract
The invention provides a production method for oil filtering paper plate containing chemical fibers. The production method employs wood pulp and the chemical fibers as raw materials and includes the steps of repulping, beating, pulp blending, papermaking, press squeezing, drying and finishing. The preparation method includes the operations of: 1) repulping the wood pulp with use amount being 70-90% in a repulping machine and adding the chemical fiber with use amount being 10-30% to the repulped pulp; 2) stirring and dispersing the mixed pulp, adding a wet strength agent, PAE, which accounts for 0.1-1.0% of the total weight of absolute dry pulp, a dry strength agent, MF, which accounts for 0.5-1.5% of the total weight of absolute dry pulp, and a softening and puffing agent which accounts for 0.1-1.0% of the total weight of absolute dry pulp, mixing and stirring the pulp uniformly, and performing papermaking with a sheet-making machine specially used for the oil filtering paper plate; and 3) press-squeezing, drying and finishing the paper plate to prepare the oil filtering paper plate which is 300-2500 g / m<2> in quantity and is 1-11 mm in thickness. The oil filtering paper plate has good permeability, is high in filtering efficiency and has long service life.
Description
technical field [0001] The invention relates to the field of pulping and papermaking, in particular to an oil filter paperboard containing chemical fibers. Background technique [0002] Power oil mainly includes three categories: turbine oil, transformer oil and phosphate ester anti-fuel in EH system. These three types of oil generally have four problems: gas, water, solid impurities and acid value. The water content of steam turbine oil often exceeds the standard due to the leakage of the steam seal. In addition, the oil circuit system brings solid impurities into the oil to produce cement-like substances, which makes the oil absorb various dust in the air. Therefore, before the overhaul period of the steam turbine or the service life of the oil, a lot of sludge has accumulated at the bottom of the oil tank. Both water and sludge will affect the normal use of oil and the safe operation of steam turbines. If the transformer oil exceeds the standard due to water, total hyd...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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