Preparation method of bamboo dissolving pulp
A technology for dissolving pulp and bamboo, applied in pulp bleaching, pulping with inorganic alkali, pulping with cellulose raw materials, etc., can solve the problems of high consumption of chemical preparations, complex process flow, and large amount of waste water.
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Embodiment 1
[0041] A preparation method of bamboo dissolving pulp, comprising the following steps:
[0042] 1) Prepare materials, choose 2-year-old bamboo and cut it into a sheet with a specification of 25×25×5, and the moisture content of the bamboo is 40%.
[0043] 2) Loading the pot: Calculate the amount of material and liquid medicine according to the volume of the digester; add qualified bamboo chips and liquid medicine to the cooking pot at the same time. The liquid temperature should be appropriate.
[0044] Bamboo with a water content of 40% and the medicinal liquid are cooked in a cooking pot. The medicinal liquid is the existing general-purpose sulfate and alkali. 24%, heating rate 8°C / 10min, 135°C heat preservation 90min, maximum cooking temperature 170°C, heat preservation time 80min. The total heating time: 205min, the number of small steam releases: 1 time, divided into three stages: the first stage, from the initial temperature to 135°C, the heating time is 145min, and on...
Embodiment 2
[0062] A preparation method of bamboo dissolving pulp, comprising the following steps:
[0063] 1) Prepare materials, choose 3-year-old bamboo and cut it into a sheet with a specification of 25×25×5, and the moisture content of the bamboo is 40%.
[0064] 2) Loading the pot: Calculate the amount of material and liquid medicine according to the volume of the digester; add qualified bamboo chips and liquid medicine to the cooking pot at the same time. The liquid temperature should be appropriate.
[0065] Bamboo with a water content of 40% and the medicinal liquid are cooked in a cooking pot. The medicinal liquid is the existing general-purpose sulfate and alkali. 23%, the heating rate is 9°C / 10min, the heat preservation time is 80 minutes at 130°C, the maximum cooking temperature is 180°C, and the heat preservation time is 80 minutes. The total heating time: 210min, the number of small steam releases: 1 time, divided into three stages: the first stage, from the initial temper...
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