Low energy consumption clean paper pulp extracting method and papermaking process thereof
A papermaking process and clean technology, applied in pulp beating/refining method, papermaking, pulp bleaching, etc., can solve problems such as pollution, waste of resources and environment, and achieve the effect of avoiding comprehensive process, easy bleaching, and low production cost
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Embodiment 1
[0052] Embodiment 1: take wheat straw as raw material to produce the original color paste, according to the following pharmaceutical formula, configure the softening soaking liquid, calculate according to the following data:
[0053] Sodium Dioxide 10%
[0054] Sodium Carbonate 3%
[0055] Penetrant T 0.5%
[0056] Magnesium Oxide 0.5%
[0057] Chelating agent EDTA 0.1%.
[0058] Calculate the dosage of the medicine, use water as the solvent, prepare the softening soaking liquid and store it in the medicine liquid pool.
[0059] The specific implementation steps are:
[0060] 1), first prepare the material, select good quality, weighed wheat straw, cut into grass sections about 50mm long, separate the dust by cyclone, sieve out impurities, infiltrate with water, and the moisture content is about 30%.
[0061] 2) Grinding and separating: the prepared wheat straw raw materials enter the coarse grinder, and the weed knots, ear stems, and grass slices are broken and ground into...
Embodiment 2
[0073] Embodiment 2: take wheat straw as raw material to produce bleached pulp, according to the following pharmaceutical formula, configure softening soaking liquid, calculate according to the following data:
[0074] Sodium Dioxide 20%
[0075] Sodium Carbonate 5%
[0076] Penetrant T 2.5%
[0077] Magnesium Oxide 0.5%
[0078] Chelating agent EDTA 0.15%.
[0079] Calculate the dosage of the medicine, use water as the solvent, prepare the softening soaking liquid and store it in the medicine liquid pool.
[0080] Concrete implementation steps: the process in step 1)-8) is the same as the embodiment.
[0081] 9) Chlorine-free bleaching: Chlorine-free bleaching technology is an advanced pulp bleaching technology actively promoted in China. The aim is to prevent organochlorine (AOX) pollution from the use of chlorine bleach. Bleaching is carried out in three stages, that is, M-P-Y, that is: M-bleach activation treatment, P-hydrogen peroxide bleaching, Y-reductive suppleme...
Embodiment 3
[0089] Embodiment 3: Production of bleached pulp with cotton stalks as raw material. Configure the prescription according to the following proportions:
[0090] Sodium Dioxide 16%
[0091] Sodium Carbonate 5%
[0092] Penetrant T 1%
[0093] Magnesium Oxide 0.5%
[0094] Chelating agent EDTA 0.05%.
[0095] Calculate the dosage of the medicine, use water as the solvent, prepare the softening soaking liquid and store it in the medicine liquid pool.
[0096] The specific implementation steps are as follows:
[0097] 1), material preparation: select the cotton stalks that have been weighed after removing the leaves and roots, and use a hammer mill to break them into material sections about 5mm long. After cyclone separation, dust removal, impurities are screened out, and water is infiltrated. The moisture content is about 30 %
[0098] 2) Rubbing and separating: the prepared cotton stalk raw material enters the double-roller screw extrusion deflaking machine, and the mater...
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