Method for preparing meat powder based on removed meat and waste residues of alkali tanning skins

A technology of waste slag and alkali leather, applied in the field of resource utilization of tanning waste, can solve problems such as difficulty in meeting hygiene and environmental protection requirements, rot and odor, and lack of resource utilization, etc., achieve good environmental and economic benefits, and reduce costs , to achieve the effect of renewable resource utilization

Inactive Publication Date: 2015-11-04
XUZHOU HONGFENG HIGH MOLECULAR MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, these solid wastes are difficult to rot for a while, and they are prone to rot and smell. It is difficult to meet the hygiene and environmental protection requirements directly as feed or burying them. Usually, the best method is incineration, and has not been utilized as a resource.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] This specific embodiment adopts following technical scheme: it comprises the following steps:

[0014] (1) Pretreatment of alkali skin and fleshy waste residue: put 100 parts of tannery carnitine skinned water and meaty waste residue, containing about 15% to 20% of dry weight meat residue, into a stainless steel drum, add 2 parts of hydrochloric acid, 2 parts Sulfuric acid, 2 parts of 30% hydrogen peroxide, increase the temperature to 40°C, and rotate the drum for 1 hour.

[0015] Add 1 part of hydrochloric acid, 1 part of sulfuric acid, 50 parts of water, 40°C, rotate the drum for 2 hours, and drain water. Repeat this 1 time and drain.

[0016] (2) Hydrolysis of alkali peeled meat waste residue: add 20 parts of water, raise the temperature of the drum to 55 ° C, rotate for 2 hours, add 3 parts of soda ash and 0.6 parts of sodium bisulfite, adjust the temperature to 30 ° C, and rotate for 2 hours, The measured pH value was 7.5-8.5. Add 1 portion of protease, adjust t...

specific Embodiment approach 2

[0018] This specific embodiment adopts following technical scheme: it comprises the following steps:

[0019] (1) Pretreatment of alkali skin and fleshy waste residue: Put 100 parts of tannery and carnitine-free meaty waste residue containing water, about 15% to 20% of dry weight meat residue, into a stainless steel drum, add 2.5 parts of hydrochloric acid, 2.5 parts Oxalic acid, 5 parts of 30% hydrogen peroxide, increase the temperature to 30°C, and rotate the drum for 2 hours.

[0020] Add 1 part of hydrochloric acid, 1 part of oxalic acid, 50 parts of water, 30°C, rotate the drum for 2 hours, and drain water. Repeat this 4 times and drain.

[0021] (2) Hydrolysis of alkali skinned and meat-removed residue: add 20 parts of water, raise the temperature of the drum to 55°C, rotate for 2 hours, add 4 parts of soda ash, 0.8 parts of sodium thiosulfate, adjust the temperature to 30°C, and rotate for 2 hours. The measured pH value was 7.5-8.5. Add 1 part of protease, adjust the...

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PUM

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Abstract

The invention discloses a method for preparing meat powder based on removed meat and waste residues of alkali tanning skins, and relates to the field of resource utilization of tanning waste. The method comprises the following steps: immersing tanned leather into water and ash so as to remove waste meat and meat residues, washing away lime residues, mud residues and adherent vestigial seta, performing oxidation so as to remove sulfide, performing enzymatic hydrolysis on muscle protein components in the meat residues so as to obtain meat pulp, drying the meat pulp, and performing granulation on the dried meat pulp so as to obtain the meat powder. Through the adoption of the method, the regenerated resource utilization of leather waste is realized, the prepared meat powder can be used as a feed or an organic fertilizer, and the burning and the burying of the leather waste are gradually cancelled, so that not only can the production sustainability be ensured, but also the pollution can be eliminated.

Description

technical field [0001] The invention relates to the field of resource utilization of tanning waste, in particular to a method for preparing meat powder based on tanning soda and meat waste residue. Background technique [0002] In the process before tanning, every 25 kg of standard cowhide after soaking and liming is equivalent to 2 kg of normal fresh meat under the condition of water content, and the weight will increase by 40% after soaking and liming. 50%, that is about 3 kg. A medium-sized tannery produces 3,000 pieces of yellow leather every day, and there are 9 tons of meaty dregs. In addition to the composition of this kind of meat dregs originating from the upper and lower tissues of cowhide (such as muscle, subcutaneous connective tissue, fat, hair), there are also a small amount of chemical reagents added in water immersion and liming, such as surfactants (used for immersion, degreasing, etc.) ), lime (for liming), sulfide (for hair removal) and some organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/10A23K1/165A23K1/16C05F1/00
CPCY02A40/20
Inventor 陈治军李瑞龙忠珍单志华邵文
Owner XUZHOU HONGFENG HIGH MOLECULAR MATERIAL CO LTD
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