Method of producing pulp by instant vaporization expansion-infiltration in straw sheets
A technology of instantaneous vaporization and straw flakes, which is applied to pulping with organic solvents, pulping of cellulose raw materials, and non-woody plant/crop pulp, etc. and other problems, to achieve the effect of improving the reaction rate and equilibrium conversion rate, eliminating feedback inhibition and low hardness
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Embodiment 1
[0033] Weigh grass slices: bagasse 100kg; organic solvent 100kg. The added sugarcane bagasse mass 0.004% surfactant Pingpingjia, 100kg of boiling water at 100°C, put Pingpingjia in boiling water and mix it for later use. Add the grass slices bagasse into the cooking pot, then add the above-mentioned weighed ethanol and mix and infiltrate the bagasse evenly. The soaking time is 10 minutes, and then add the above-mentioned 100°C boiling water with surfactant added, and the boiling water flow rate is 100kg / min. The ethanol that penetrates into the sugarcane fiber cells instantly vaporizes and expands to destroy the cell membrane, and then passes CO into the cooking pot 2 , control reaction pressure 7.1MPa, reaction temperature 80 ℃, reaction time 0.5h, using organic solvent ethanol, surfactant Pingpingjia and supercritical CO 2 Carry out self-catalytic de-lignification between fiber cells of grass slices. During the reaction, ethanol forms steam and the water vapor generated du...
Embodiment 2
[0035] The method steps of Example 1 were repeated with the components and process parameters specified in Table 1 below.
Embodiment 3
[0037] The method steps of Example 1 were repeated with the components and process parameters specified in Table 1 below.
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