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High-concentration biomass slurry as well as preparation method and application thereof

A biomass slurry, high-concentration technology, applied in the direction of biofuel, waste fuel, lignin derivatives, etc., can solve the problems of difficult feeding and transportation, loss of fluidity, low slurry concentration, etc., to improve the overall operating efficiency and economic benefits, increase product concentration, and reduce process energy consumption

Active Publication Date: 2017-07-21
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the swelling effect of the biomass powder when it meets water, the slurry concentration (mass percentage content of the biomass component in the slurry) that can be achieved by conventional methods is low, only below 10wt%, and the calorific value is only 300kcal / kg or so, not suitable as gasification raw material
If the concentration of biomass slurry continues to increase, fluidity will be lost due to a sharp increase in apparent viscosity, resulting in difficulty in feeding or clogging

Method used

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  • High-concentration biomass slurry as well as preparation method and application thereof
  • High-concentration biomass slurry as well as preparation method and application thereof
  • High-concentration biomass slurry as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The composition and preparation method of the high-concentration biomass slurry provided in this example are as follows:

[0044] 1) 100kg of Fischer-Tropsch synthesis water phase product (the main component is water, containing a small amount of water-soluble alcohol, aldehyde, acid and other organic substances), 15kg of waste engine oil, and 3kg of OP-10 and Tween-80 compound emulsifier (Hydrophilic-lipophilic balance value is 9.0) mixed and prepared into an emulsified solution, the heating temperature is controlled at 75°C, and the stirring speed is controlled at 1000r / min;

[0045] 2) 270kg of shaped biomass particles (particle density of 1.4g / cm 3 ) the powder obtained after pulverizing is mixed with the 118kg emulsified solution obtained in step 1);

[0046] 3) Add 1.5kg of alkylsulfonate and 0.5kg of polyethylene oxide (additive), and stir to form a high-concentration biomass slurry.

Embodiment 2

[0048] 1) Mix 240kg of synthetic gas purification waste water, 20kg of catering waste oil, and 4kg of OP-10 and oleic acid triethanolamine compound emulsifier (hydrophilic-lipophilic balance value is 9.7) to form an emulsified solution, heating temperature Control at 80°C, and control the stirring speed at 1100r / min;

[0049] 2) 200kg of wheat straw granules (the particle density after compression is 0.7g / cm 3 ) Grinding and refining pulp in 3-stage series double-disk mills, adding 264kg of emulsified solution obtained in step 1) during the refining process;

[0050] 3) Add 2kg of lignosulfonate (additive) and 20kg of dried municipal sludge (optional ingredients) with a solid content of 80wt% to the slurry to form a high-concentration biomass slurry.

Embodiment 3

[0052] 1) Mix 250kg of naphtha and 2kg of glyceryl monostearate / Tween-20 compound emulsifier (hydrophilic-lipophilic balance value is 8.1) to prepare an emulsified solution. The heating temperature is controlled at 70°C and the stirring speed is Control at 900r / min;

[0053] 2) 180kg of branches and branches are crushed into sawdust (the particle density is 0.9g / cm 3 ) mixed with the 252kg emulsified solution obtained in step 1);

[0054] 3) Add 1.8 kg of alkyl sulfonate and 0.2 kg of polystyrene sulfonate (additive) and 10 kg of papermaking black liquor (optional ingredients) with a solid content of 60 wt%, and stir to form a high-concentration biomass slurry.

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Abstract

The invention discloses high-concentration biomass slurry as well as a preparation method and application thereof. The high-concentration biomass slurry is mainly obtained by carrying out surface modification of an emulsified solution on biomass particles; a swelling effect of the biomass particles is effectively inhibited, so that the high-concentration biomass slurry is formed. The preparation method of the high-concentration biomass slurry comprises the following steps: blending a nonpolar solvent, an emulsifying agent and selectable water into a stable emulsified solution under the conditions of heating and stirring; secondly, uniformly mixing crushed biomass particles with the emulsified solution, or adding the emulsified solution in the process of breaking and grinding biomass, and enabling the surfaces of the particles to be modified. The invention also provides the application of the high-concentration biomass slurry in the fields such as biomass power generation and preparation of synthetic gas by using the biomass. According to the high-concentration biomass slurry disclosed by the invention, the high-concentration biomass slurry is obtained by modifying the biomass particles; the obtained slurry can be conveyed to a downstream working procedure at lower energy consumption by adopting a slurry pump, and high-pressure stable feeding is realized.

Description

technical field [0001] The invention relates to a biomass pretreatment technology, in particular to a high-concentration biomass slurry and its preparation method and application. Background technique [0002] Due to the non-renewability of primary energy such as coal, oil and natural gas, and the existence of greenhouse effect and environmental protection problems in the process of use, the clean and environmentally friendly utilization of renewable biomass resources with both material and energy attributes has shown great potential for development and has become The focus of people's research and application. [0003] my country produces 700 million tons of agricultural straw and 200 million tons of forestry solid waste annually, a considerable part of which is discarded or burned on site, resulting in energy waste and environmental pollution. These agricultural and forestry resource biomass can generate H through gasification reaction after drying and crushing 2 This is...

Claims

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Application Information

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IPC IPC(8): C10L5/44C10J3/46C10L9/10C08H7/00C08B37/14
CPCC07G1/00C08B37/14C10J3/466C10J2300/0906C10J2300/092C10L5/442C10L5/445C10L9/10C10L2290/06C10L2290/24C10L2290/28Y02E50/10Y02E50/30
Inventor 郑申棵J·R·黄贺蓉朱晓玮童浩
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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