New catalystic reactor method for producing commercial grade pulp, native lignin and single cell protein

A catalytic reaction, lignin technology, applied in pulp dehydration, pulp by-product recovery, pulping with inorganic alkali, etc., to achieve high yield, high efficiency, and high pulp yield.

Inactive Publication Date: 2008-12-17
凯利·安东尼·O'弗林 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the treatment equipment installed, even expensive advanced equipment, can only treat a limited variety of plant materials

Method used

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  • New catalystic reactor method for producing commercial grade pulp, native lignin and single cell protein
  • New catalystic reactor method for producing commercial grade pulp, native lignin and single cell protein
  • New catalystic reactor method for producing commercial grade pulp, native lignin and single cell protein

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Embodiment Construction

[0041] figure 1 A schematic diagram of a preferred embodiment of the method of the invention is shown. The wood chips from the feed port 2 are placed in the impregnation chamber 4 together with the impregnation liquid. After allowing the chips to soak for an appropriate time, excess impregnating liquid is removed and washed, such as by filter mechanism 6; and collected in recovery tank 10. Afterwards, it is enriched and returned to the impregnation chamber 4 , for example by means of a pump 12 . At the same time, the impregnated wood chips are transported to the catalytic reactor 20 by appropriate means, such as the screw conveying mechanism 8 . To control the delivery of wood chips from the impregnation chamber 4 to the catalytic reactor 20, various mechanisms can be used. In a preferred embodiment, storage tank 14 holds the impregnated wood chips until they can be conveyed via funnel 16 into measurement device 18 . Measuring device 18 controls the feed rate of wood chips...

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Abstract

A continuous and batch system to produce cellulose, native lignin and unicellular protein from any form of vegetation in a closed process. The biomass is mixed in the impregnate solution of nitric acid and/or ammonium hydroxide and water. After a period of time at room temperature and atmospheric pressure the chemical solution is recycled. The biomass is moved to the reactor and heated. Evaporated impregnate is recovered via absorption tower and recycled back to chemical solution. The biomass is moved to an alkaline solution, then cooled to separate pulp from black liquor. The black liquor is pumped to a separation tank and is treated to precipitate lignin. The solution is filtered to separate sweet liquor and lignin. The lignin is dried and the sweet liquor is fermented to produce unicellular protein.

Description

technical field [0001] The present invention relates to a process for the treatment of lignocellulosic material, and in particular to acid-catalyzed hydrolysis of impregnated wood chips to achieve partial depolymerization of the lignin matrix, followed by distillation, concentration and recovery of the acid catalyst. Background technique [0002] Prior art methods of processing lignocellulosic materials often require high temperatures and pressures to ensure adequate rates of chemical reaction progress. Therefore, specific high pressure vessels and specialized equipment are necessary to withstand the harsh conditions. This makes the process equipment very expensive to set up and maintain, and very expensive to operate, in addition to high energy requirements. [0003] Furthermore, harsh chemicals are often required in order to produce the desired oxidation or reduction reaction. Chemicals attack equipment and lignocellulosic materials, which in turn will increase equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/16D21C3/26D21C11/10D21C9/18
CPCD21C1/04D21C3/02D21C11/0007
Inventor 凯利·安东尼·O'弗林乔斯安东尼奥·罗德里格斯·里韦拉
Owner 凯利·安东尼·O'弗林
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