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Method for producing feed by utilizing high-concentration waste syrup of citric acid

A citric acid, high-concentration technology, applied in the direction of animal feed, animal feed, application, etc., to achieve the effect of high degree of automation, reduction of environmental protection load, and improvement of overall yield

Inactive Publication Date: 2012-12-26
RIZHAO LUXIN JINHE BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no publications or reports on the patents and documents of using high-concentration citric acid waste sugar water to produce feed

Method used

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  • Method for producing feed by utilizing high-concentration waste syrup of citric acid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. The high-concentration citric acid waste sugar water is concentrated once by a five-effect concentration evaporator, and the concentration of the concentrated solution is 7.5% on a dry basis;

[0019] 2. The primary concentrated liquid is separated from the solid and liquid by the centrifuge under the plate discharge;

[0020] 3. The filtrate is concentrated twice through a four-effect concentrated evaporator, and the concentration of the concentrated solution is 52.4% on a dry basis;

[0021] 4. The secondary concentrate is continuously mixed into the baked citric acid residue or sugar residue;

[0022] 5. The finished feed is obtained by mixing the ingredients for secondary drying. The protein content is 22.5%, and the moisture content is 12.0%, which meets the enterprise standard.

Embodiment 2

[0024] 1. High-concentration citric acid waste sugar water is concentrated once by a six-effect concentration evaporator, and the concentration of the concentrated solution is 8.6% on a dry basis;

[0025] 2. The primary concentrate is separated from solid and liquid by a decanter centrifuge;

[0026] 3. The filtrate is concentrated twice through a four-effect concentrated evaporator, and the concentration of the concentrated solution is 57.5% on a dry basis;

[0027] 4. The secondary concentrate is continuously mixed into the baked citric acid residue or sugar residue;

[0028] 5. The finished feed is obtained by mixing the ingredients for secondary drying, with a protein content of 20.0% and a moisture content of 14.0%, which meet the enterprise standards.

Embodiment 3

[0030] 1. The high-concentration citric acid waste sugar water is concentrated once by a five-effect concentration evaporator, and the concentration of the concentrated solution is 6.5% on a dry basis;

[0031] 2. The primary concentrated liquid is separated from the solid and liquid by the centrifuge under the plate discharge;

[0032] 3. The filtrate is concentrated twice by a four-effect concentrated evaporator, and the concentration of the concentrated solution is 50% of the dry basis content;

[0033] 4. The secondary concentrate is continuously mixed into the baked citric acid residue or sugar residue;

[0034] 5. The finished feed is obtained by mixing the ingredients for secondary drying. The protein content is 24.6%, and the moisture content is 12.5%, which meets the enterprise standard.

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Abstract

The invention provides a method for producing a feed by utilizing high-concentration waste syrup of citric acid. The method is characterized by comprising the following steps: firstly carrying out concentration on the high-concentration waste syrup, separating out calcium salt, and carrying out secondary concentration on filtrate; and continuously mixing the thick mash subjected to secondary concentration into dried acid sludge or sugar sludge of the citric acid, and carrying out secondary drying, thus obtaining a finished feed product. After implementation of the technology, not only can the reduction of discharge of the high-concentration waste syrup of the citric acid be realized, but also beneficial substances in the waste syrup are fully recovered and utilized, the product yield and resource recycling are improved, and simultaneously the clean production level of enterprises is improved.

Description

technical field [0001] The invention belongs to the comprehensive reuse of resources in the field of waste water, and in particular relates to a method for producing feed using high-concentration citric acid waste sugar water. Background technique [0002] Citric acid enterprises will produce a large amount of high-concentration sugar water in the production process. The current general treatment process is to directly or indirectly introduce it into the environmental protection station [after heat exchange], and discharge it after anaerobic digestion and aerobic digestion. Although this treatment process can remove high-concentration citric acid waste sugar water, the disadvantage is that the environmental protection load is large, and the potential impurities in waste sugar water such as protein, colloid and calcium salt will lead to an increase in environmentally friendly flocculent sludge in disguise. , the amount of solid waste increases, the difficulty of subsequent tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K1/02A23K10/33
CPCY02P60/87
Inventor 寇光智丁兆堂于海彬周昊陈瑶
Owner RIZHAO LUXIN JINHE BIOCHEM
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