Pulping method of non-wood fibers with no black liquor drained off as well as its boiler
A non-wood fiber and digester technology, which is applied in the direction of cellulose raw material pulping, digester, and fiber raw material treatment, can solve problems such as bleaching difficulties, adverse environmental effects, and recycling troubles, and achieve simple and easy process and reduce Effects of washing water consumption, easy separation and dehydration
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[0035] Add 3.6 kg of Jilin-produced reed (moisture content 13.63%) into a stainless steel digester with a screen and a jacket, and add 32 kg of acetic acid with a concentration of 906g / L (50ml of concentrated sulfuric acid is added in advance). Steam for 120 minutes at ℃. Use the pressure in the digester to transfer the black hydraulic pressure into the waste acid storage tank. Then add 12 kilograms of 90% ethanol to the digester, perform acid alcohol digestion at 110-120°C for 60 minutes, and use the pressure in the digester to push the black hydraulic pressure into the spent acid alcohol liquid storage tank. Then the pulp is washed with hot alcohol solution and then with hot water. The washing method is the same as that in the preparation of bamboo pulp, except that the amount of alcohol is 12 kg each time.
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