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Device for simultaneously extracting hemicellulose, cellulose and lignin from biomass raw materials

A biomass raw material, hemicellulose technology, applied in the directions of lignin derivatives, fiber raw material processing, textiles and paper making, etc. Eliminate safety hazards and reduce the effectiveness of procurement processes

Active Publication Date: 2016-06-22
ANHUI GEYI CYCLIC ECONOMY IND PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these reuse technologies themselves are not perfect, and cannot meet the current diverse needs

Method used

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  • Device for simultaneously extracting hemicellulose, cellulose and lignin from biomass raw materials
  • Device for simultaneously extracting hemicellulose, cellulose and lignin from biomass raw materials
  • Device for simultaneously extracting hemicellulose, cellulose and lignin from biomass raw materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The figure below shows a schematic Figure 2-4 The device of the present invention will be described. Figure 2-4 The middle-level separation device includes a first-level separation cooking device and a first-level separation cleaning device. The biomass is steam-cooked at 0.6MPa-3.0MPa for 1min-5min in the primary separation cooking device. After steam treatment, it enters the primary separation and cleaning device. The obtained solid cellulose enters the secondary separation device, and the liquid hemicellulose enters the circulation tank with stirring blades. In the secondary separation device, based on the total mass of the first solid phase, add an alkali solution with a concentration of 4% to 10%, and cook at 60°C to 130°C for 0.5h to 3h. get liquid. In the three-stage separation device, the above-mentioned liquid is subjected to precipitation, filtration, activation, and refining treatment to obtain biochemical lignin stock solution. Enter the membrane trea...

Embodiment 2

[0055] In order to verify the feasibility of the present invention, by the present invention image 3 Described device has carried out following experiment:

[0056] 1. Clear liquid storage tank: the storage tank is a cuboid stainless steel box type with a volume of 12m 3 .

[0057] 2. When the clear liquid comes to the water treatment, it first enters the storage tank, and then by adjusting the outlet valve of the storage tank, the flow rate is controlled so that the pH of the circulating pool can be kept within the range of 6.8 to 7.5.

[0058] 3. Various indicators of the clear liquid: temperature ≤ 45°C, pH value 12-12.5, COD (chemical oxygen demand) content ≤ 15000mg / L, SS (suspended solids) content ≤ 300mg / L.

[0059] 4. Various indicators of the hemicellulose liquid entering the circulating pool: temperature 30°C-37°C, pH value 5.0-7.5, COD (chemical oxygen demand) content ≤ 8000mg / L, SS (suspended solids) content ≤ 500mg / L .

[0060] 5. Various indicators of the hemi...

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Abstract

The invention provides a device for simultaneously extracting hemicellulose, cellulose and lignin from biomass raw materials. The device comprises a first-grade separation device, a second-grade separation device, a third-grade separation device, a film treatment device, a pH value real-time monitoring device, a liquid-phase mixing device and a flow control device. The devices are combined, and lignin film treatment supernatant with the pH value of being more than 10 and lower than 13 is used for replacing or partially replacing alkaline liquid to adjust the pH value of an IC anaerobic tower to a needed range. With the adoption of a method provided by the invention, the individual treatment cost of the supernatant can be reduced and potential pollution dangers to the environment by the liquid are effectively solved; and complicated purchasing flows are reduced, and safety dangers in liquid alkali loading and unloading processes are eliminated.

Description

technical field [0001] The invention relates to the field of high-efficiency comprehensive utilization of biomass resources, in particular to a device for simultaneously extracting hemicellulose, cellulose and lignin from biomass raw materials. Background technique [0002] A large amount of fiber components are contained in agricultural biomass resources such as various plant straws. One of the important research directions for the comprehensive utilization of biomass resources is to obtain cellulose, hemicellulose and lignin from biomass resources through separation technology, and the three are collectively referred to as "three elements". A large amount of water is required in the three-stage separation process, and a considerable amount of various liquids are also produced, including the hemicellulose liquid phase produced during the first-stage separation and the biochemical lignin stock solution obtained during the three-stage separation. The supernatant obtained aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00C08B37/14C08H7/00C07G1/00
CPCC07G1/00C08B37/14D21C5/00
Inventor 邹海平刘湘逸邹妍梅虎黄裔周婉莹朱友
Owner ANHUI GEYI CYCLIC ECONOMY IND PARK
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