Process for making daily used paper by using salix mongolica as raw material
A technology for household paper and pulping, which is applied in papermaking, papermaking, textiles and papermaking, etc., can solve problems such as the inability to achieve the level of production technology and product grades, and achieve the effect of environmental improvement, broad market prospects and environmental improvement.
Active Publication Date: 2008-02-27
宁夏同创秸科生物科技有限公司
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Problems solved by technology
The Chinese patent discloses two methods of making paper with willow salix as raw material, among which "making boxboard and corrugated base paper from salix salix" (patent application number: 96117325.4) discloses a method of making low-grade paper-corrugated paper from salix salix as raw material , "Pulping and papermaking by Salix imonium method" (patent application number: 00113846.4) discloses a method for making wrapping paper with Salix salix as raw material. Requirements for household paper with a high level of raw material production technology and high-grade products
Method used
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Experimental program
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Embodiment Construction
[0024] 1. Pulping
[0025] 1.1 Dry preparation:
[0026] Salix salix grown for 3 years in the desert area is used, cut into 15-35mm long flakes by a grass cutter, and the moisture content of the flakes is 10-30%. Pre-soaked, then filled with steamed balls via a pot loader.
[0027] 1.2 Batch cooking:
[0028] The flakes from the material preparation section are mixed with the cooking liquid, and then go through the spiral prepreg machine, the pot loader, and then enter the steaming ball for cooking. The cooked coarse slurry is sprayed into the spray bin, or poured into the ball pool. The bottom of the spray bin adopts a screw propeller, and the double-screw squeezer squeezes out the black liquor, and the coarse pulp is diluted with white water and then falls into the flushing tank.
[0029] 1.3 Washing section:
[0030] The coarse pulp from the flushing tank is pumped to the jump screen for rough separation, then washed by the filter press, then selected by the centrifuga...
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Abstract
The invention is a process for pulping raw material--salix mongolica and making living paper, mainly comprising pulping and making processes, where the pulping process comprises dry preparing stocks, intermittently cooking, washing and bleaching; and the making process comprises pulping and making, and characterized by that the dry preparing stocks uses salix mongolica as raw material, cuts it into 15-35 mm long pieces by grass cutter, where the moisture of the pieces is 10%-30%; the process parameters of the intermittently cooking: potted quantity 5.0-6.0t / ball (air-dry); alkali utilization 18%-22%, AQ utilization 1.8-2.0kg / ball; Na2SO3 utilization 75-100kg / ball; cooking pressure 0.65-0.8Mpa; solid-liquid ratio 1 : (2-3); temperature of decoction entering in cooked balls greater than or equal to 80DEG C; decoction concentration 80-100g / l; cooking time 4-5 h; bleaching temperature 35-45DEG C; fine pulp yield greater than or equal to 40%; and coarse pulp hardness 9-20 (KMnO4 value).
Description
Technical field: [0001] The invention relates to the technical field of papermaking, in particular to a method for pulping and making household paper using Salix salix as a raw material. Background technique: [0002] Salix salix is a shrub growing in desert areas, which has the functions of windproof and sand-fixing; Salix salix grows fast and has a short cycle, with an average diameter of 2-3cm and a height of more than 3m in three years; More new branches will be produced in two years, otherwise it will die naturally; in recent years, due to the strengthening of sand control efforts by the state and the implementation of many preferential policies, the area of artificial planting of salix has continued to expand. The Chinese patent discloses two methods of making paper with willow salix as raw material, among which "making boxboard and corrugated base paper from salix salix" (patent application number: 96117325.4) discloses a method of making low-grade paper-corrugate...
Claims
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IPC IPC(8): D21C3/02D21B1/02D21F9/00
Inventor 张东红于振强王永徐和刚
Owner 宁夏同创秸科生物科技有限公司