Method for extracting cellulose, lignose and compound fertilizer from cotton-seed hull
A technology of lignin and cottonseed hulls, which is applied in the field of extracting cellulose, lignin and compound fertilizer, can solve the problems of environmental pollution and high cost of pollution control, and achieve the effect of improving the comprehensive utilization rate of raw materials and high promotion and use value
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Embodiment 1
[0013] Add 1 kg of cottonseed hulls to a solution of 10 g of lignin eluting agent and 5 kg of water, heat to 80°C for cooking reaction for 6 hours, after the reaction is complete, the crude fibers can be separated, rinsed, refined, and dried. Finished fiber is 0.4 kg, and the solution after rinsing is sent to the soaking container for reuse; the solution in the first boiling pool is acidified, and the solid is separated out by pressure filtration to obtain 0.2 kg of lignin; the solution after lignin is extracted, and the pH value is adjusted , after concentration, spray-dried and granulated to obtain 0.21 kg of compound fertilizer. The lignin stripping agent consists of 7-8 parts of potassium phosphate, 1.9-2.9 parts of potassium permanganate and 0.1 part of wood penetrating agent by mass.
Embodiment 2
[0015] Add 0.5 tons of cottonseed hulls to a solution of 60 kg of lignin solvent and 3,000 kg of water, heat to 85°C for cooking and reaction for 5 hours, after the reaction is complete, the crude fibers can be separated, rinsed, refined, and dried. Obtain 0.21 tons of fiber products, and the solution after rinsing is sent to the soaking container for reuse; the solution in the first boiling pool is acidified, and the solids are separated out by pressure filtration, which is 0.09 tons of lignin; the solution after lignin is extracted, the pH is adjusted value, concentrated, spray-dried and granulated to obtain 0.1 tons of compound fertilizer. The composition of the lignin stripping agent is the same as in Example 1.
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