Method for co-producing paper pulp and fuel ethanol by wild grass on forest land
A technology for woodland waste grass and fuel ethanol is applied in the field of comprehensive utilization of woodland waste grass resources. The effect of resources
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Embodiment 1
[0048] (1) Cut short 300g of woodland weeds of the whole plant and place them in a steam explosion device at 1.5MPa, maintain pressure for 5min for steam explosion treatment;
[0049] (2) adopt carding device to carry out carding and classification to the material after above-mentioned steam explosion treatment, the obtained high-quality fiber bundle tissue, miscellaneous cell and fine fiber tissue;
[0050] (3) Ethanol self-catalyzed pulping of high-quality fiber bundles in steam-exploded woodland weed grass
[0051] 1) Cooking: put the steam-exploded woodland weed grass fiber bundles into the cooking kettle, add 10L of liquid ratio to 1kg of material, add 55% (v / v) ethanol aqueous solution, rapidly raise the temperature to 160°C, and keep at this temperature for 120min:
[0052] 2) Washing: After the reaction is completed, pour condensed water to rapidly cool the reactor to about 70° C., take it out, and filter to obtain filtrate and slurry. Replace and wash the pulp with 5...
Embodiment 2
[0059] (1) Cut short 300g of woodland weeds of the whole plant and place them in a steam explosion device at 1.5MPa, maintain pressure for 4min for steam explosion treatment;
[0060] (2) adopt carding device to carry out carding and classification to the material after above-mentioned steam explosion treatment, the obtained high-quality fiber bundle tissue, miscellaneous cell and fine fiber tissue;
[0061] (3) Ethanol self-catalyzed pulping of high-quality fiber bundles in steam-exploded woodland weed grass
[0062] 1) Cooking: put the steam-exploded woodland weed grass fiber bundles into a cooking kettle, add 55% (v / v) ethanol aqueous solution according to the ratio of 12L of liquid to 1kg of material, rapidly raise the temperature to 140°C, and keep at this temperature for 90min;
[0063] 2) Washing: After the reaction is completed, pour condensed water to rapidly cool the reactor to about 70° C., take it out, and filter to obtain filtrate and slurry. Replace and wash the...
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