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Method for preparing slurry

A slurry and raw material technology, applied in the field of slurry preparation for ethanol production, can solve the problem of ineffective removal of sundries

Active Publication Date: 2011-11-23
COFCO GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defect that the traditional method for preparing slurry cannot effectively remove impurities, and provide a method for preparing slurry that can effectively remove impurities

Method used

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preparation example Construction

[0026] The method for preparing slurry provided by the invention comprises:

[0027] Classification process: Classify the supplied raw materials into small particle size raw materials and large particle size raw materials, wherein the small particle size raw materials are usually doped with fine impurities, and the large particle size raw materials are usually doped with light impurities. thing;

[0028] Sand settling process: carry out sand settling treatment on small-sized raw materials doped with fine impurities, wherein the density of the fine impurities is greater than that of water, and the sand settling treatment includes: making the mixed fine impurities The small particle size raw material of the substance flows with the water, and the fine impurities are deposited during the flow process, and the small particle size raw material continues to flow together with the water to form a slurry;

[0029] Impurity removal and crushing process: transport the large particle si...

Embodiment approach

[0097] According to a preferred embodiment of the present invention, the impurity removal device further includes at least one screen, the screen is located in the delivery pipeline 110 and the plane where the screen is located is perpendicular to the longitudinal direction of the delivery pipeline 110 . Therefore, when the raw material with large particle size is conveyed in the conveying pipeline 110 , impurities doped in the raw material with large particle size can be removed through the screen.

[0098] One sieve can also be provided, preferably a plurality of sieves, so as to give full play to the function of the sieve to remove foreign matter. The screen can be installed in the delivery pipe 110 in various ways, for example, the screen can be fixed (such as welding, snap fit, etc.) on the inner surface of the side wall of the delivery pipe 110 .

[0099] But, in order to be able to clean up the sundries remaining on the sieve in time, to keep the patency of delivery pi...

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Abstract

The invention discloses a method for preparing a slurry, comprising the following steps: grading the supplied raw materials as raw materials with a small particle size doped with fine small impurities and raw materials with a large particle size doped with light impurities; carrying out desilting on the raw materials with the small particle size doped with the fine small impurities; conveying theraw materials with the large partical size doped with the light impurities along the transmission line, carrying out impurity removal on the raw materials with the large partical size doped with the light impurities in the process of conveying along the transmission line for separating the light impurities from the raw materials with the large particle size, then crushing the raw materials with the large particle size; and using a slurry doped with the raw materials with the small particle size and the crushed raw materials with the large particle size to prepare the slurry; wherein, the density of the fine small impurities is larger than the density of water, and the desilting process comprises the following steps: allowing the raw materials with the small particle size doped with the fine small impurities to move with water, allowing the fine small impurities to deposit during the moving, so that the raw materials with the small particle size continue to move with water to form the slurry. The slurry prepared by the method disclosed in the invention is not doped with impurities.

Description

technical field [0001] The invention relates to the field of chemical industry, more specifically, to a method for preparing slurry for ethanol production. Background technique [0002] In various occasions of industrial application, the preparation of slurry is often required. For example, in a factory producing ethanol, the usual process is: first, the raw materials (such as block, flake or granular cassava, sweet potato, potato, etc.) Larger raw materials are crushed into smaller or finer raw materials, and then water and finer raw materials are mixed through a pulping device to form a slurry, and then the obtained slurry is subjected to enzymatic hydrolysis and fermentation treatment, and finally ethanol is obtained . [0003] In this traditional process, the conveyed raw materials are inevitably mixed with impurities, such as finer sand, larger stones, or plastic products such as strips of plastic cloth or woven bags. residues. Moreover, the raw materials cannot be ...

Claims

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Application Information

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IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 岳国君严明奕柳树海黄加军刘小平邓立康严伟松
Owner COFCO GROUP