Method for removing impurities from cassava raw material

A cassava and raw material technology, applied in biofuels, fermentation, etc., can solve problems such as poor quality and low yield, achieve the effects of reducing losses, improving the speed of impurity removal, and preventing wear and clogging

Inactive Publication Date: 2011-07-20
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing research results show that when the crystallization temperature exceeds 35 °C, the crystallization habit is mainly β-type, and the yield is low and the quality is poor.

Method used

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  • Method for removing impurities from cassava raw material
  • Method for removing impurities from cassava raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to the technical scheme provided by the invention, a method for removing impurities from cassava raw materials adopts the following process steps:

[0023] 1. Pre-removal of impurities: take 1t of cassava raw materials, first pass through a grid sieve to remove impurities such as packaging bags and hemp ropes, and then remove iron through an electromagnetic iron remover;

[0024] 2. Crushing: After iron removal, the cassava enters the phase crusher for coarse crushing, and the coarsely crushed cassava material passes through the 8mm sieve plate; then enters the fine crusher, and the finely crushed cassava particles pass through the 1.5mm sieve;

[0025] 3. Mixing material: the crushed cassava raw material enters the mixing tank, then adds the thin starch slurry in step 5 for slurry mixing, and adds 0.5t of fresh water to ensure that the liquid-solid mass ratio of the slurry is 2.5:1;

[0026] 4. Primary impurity removal: the slurry obtained in step 3 is pumped...

Embodiment 2

[0029] The difference from the first embodiment above is that in this embodiment, a three-stage hydrocyclone separation and impurity removal method is adopted. According to the technical solution provided by the present invention, a method for removing impurities from cassava raw materials adopts the following process steps:

[0030] 1. Pre-removal of impurities: Take 1t of cassava raw materials, first pass through a grid sieve to remove impurities such as packaging bags and hemp ropes, and then remove iron through an electromagnetic iron remover;

[0031] 2. Crushing: After iron removal, the cassava enters the coarse crusher for coarse crushing, and the coarsely crushed cassava material passes through a 10mm sieve plate; then enters the fine crusher, and the finely crushed cassava particles pass through a 1.5mm sieve;

[0032] 3. Mixing material: enter the mixing tank through the pulverized cassava raw material, then add the thin starch slurry in step 5 to adjust the slurry, a...

Embodiment 3

[0037] The difference from the first and / or second examples above is that in this example, a four-stage hydrocyclone separation method is adopted, and according to the technical solution provided by the present invention, a method for removing impurities from cassava raw materials adopts the following process steps :

[0038] 1. Pre-removal of impurities: Take 1t of cassava raw materials, first pass through a grid sieve to remove impurities such as packaging bags and hemp ropes, and then remove iron through an electromagnetic iron remover;

[0039] 2. Crushing: After iron removal, the cassava enters the coarse crusher for coarse crushing, and the coarsely crushed cassava material passes through a 10mm sieve plate; then enters the fine crusher, and the finely crushed cassava particles pass through a 2mm sieve;

[0040] 3. Mixing material: enter the mixing tank through the pulverized cassava raw material, then add the dilute starch slurry in step 5 to adjust the slurry, and add ...

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Abstract

The invention relates to a method for removing impurities from a cassava raw material. The method is characterized by comprising the following steps of: pre-removing the impurities; crushing cassava; mixing pulp; and performing multi-stage hydrocyclone separation, wherein small-particle sandstone and soil in cassava powder are removed by the density difference between muddy sand and starch, the impurities such as the muddy sand and the like are washed for multiple times, and dilute cassava starch pulp is subjected to reflux and is recycled. The method has a good impurity removing effect, low starch loss, compact equipment and small occupied floor, and the starch pulp can also be prevented from being polluted.

Description

technical field [0001] The invention relates to a method for removing impurities from cassava raw materials, specifically, mainly refers to a method for separating impurities such as small particles of silt from pulverized cassava raw materials, and belongs to the technical field of fermented food industry. Background technique [0002] When cassava is used as raw material to produce alcohol, cassava is often mixed with impurities such as soil, sand, and metal. Metal impurities can be removed by magnetic separation, but small particles of sand and sand attached to the surface of cassava, etc. , is not easy to remove, if it is not removed before it is officially put into production, it will seriously affect the normal production. These impurities will not only cause damage to the cooking injector, but also seriously wear the feeding pumps and pipelines of the whole line. At the same time, during continuous fermentation and semi-continuous fermentation, there will be a large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 张建华张宏建唐蕾张成明毛忠贵
Owner JIANGNAN UNIV
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