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Method to reduce energy consumption during biomass pretreatment

A pretreatment, biomass technology, applied in water/steam pretreatment, fiber raw material treatment, fuel, etc., can solve the problems of industrial-scale application of pretreatment methods with high energy cost

Active Publication Date: 2020-06-05
科莱恩产品 (德国) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, high energy costs make many pretreatment methods unprofitable for industrial-scale applications

Method used

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  • Method to reduce energy consumption during biomass pretreatment
  • Method to reduce energy consumption during biomass pretreatment
  • Method to reduce energy consumption during biomass pretreatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-0

[0068] Embodiment 1-0 (comparative example) wheat straw (moisture content 15wt.-%)

[0069] Wheat straw bales were fluffed in a bale crusher (Tietjen) equipped with a rotating scraper operating at 3000 rpm, yielding granules with a particle size of 10-40 cm. This particle size ensures smooth delivery of the material and operation of the subsequent grinding step. The biomass material was pneumatically conveyed to a hammer mill (Tietjen VDK4.1 ) operating at 3000 rpm with a 30 mm sieve, where the wheat straw was chopped into pieces with an average particle size of 1-5 cm.

[0070] The chopped wheat straw was conveyed to the thermal pretreatment reactor with a syringe feeder (Metso; PDF 2545) followed by a conveying screw (Metso; FFS 211 ) and a plug screw (Metso; ADI 180). Syringe feeders convert mass flow Adjust to 400kg(DM) / h. The dry matter content of wheat straw was 85 wt.-%, the xylose content was 22.7 wt.-% and the lignin content was 16.6 wt.-%, resulting in PRP of ...

Embodiment 1-A

[0073] Embodiment 1-A wheat straw (moisture content 15wt.-%)

[0074] Biomass preparation was performed as defined in Example 1-0. Composition is identical with embodiment 1-0

[0075] By adjusting the exit area to 65mm 2 , modify the FPP (raw material processing parameter) to The measured steam consumption amounted to 403 kg / h and corresponds to a specific steam consumption of 1.0 kg per 1 kg of DM, which represents an effective 77% reduction in steam consumption compared to Example 1-0. The results are shown in Table 5.

Embodiment 1-B

[0076] Embodiment 1-B wheat straw (moisture content 15wt.-%)

[0077] Biomass preparation was performed as defined in Example 1-0. The dry matter content of wheat straw was 85 wt.-%, the xylose content was 21.3 wt.-% and the lignin content was 15.6 wt.-%, resulting in PRP of By adjusting the exit area to 90mm 2 , modify the FPP (raw material processing parameter) to The measured steam consumption amounted to 558 kg / h and corresponded to a specific steam consumption of 1.4 kg per 1 kg of DM, which represented an effective 68.2% reduction in steam consumption compared to Example 1-0. The results are shown in Table 5.

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Abstract

The present invention relates to a method for reducing energy consumption during pretreatment of biomass.

Description

technical field [0001] The present invention relates to a method for reducing energy consumption during pretreatment of biomass. Background technique [0002] Much organic biomass must undergo complex pretreatment methods to be able to fully utilize its components. Conventional biomass pretreatment methods include the use of steam to break down the structure of organic materials. An effective pretreatment method very often used eg for lignocellulosic biomass is steam explosion. In this type of pretreatment, large amounts of steam are required to pressurize the biomass to a certain overpressure before initiating spontaneous expansion to break down the fibers. Therefore, high energy costs make many pretreatment methods unprofitable for industrial-scale applications. [0003] This approach is known, for example, from Chiaramonti D. et al.'s review of pretreatment methods and development of innovative methods for lignocellulosic ethanol production. Biomass and Bioenergy, 201...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/00
CPCC10L9/00C10L9/086C12P2201/00D21B1/12D21C1/02Y02E50/10
Inventor B·胡赫勒恩T·霍佩R·霍施
Owner 科莱恩产品 (德国)