Method for separating feather fibers from poultry feather raw material

Abstract

The invention provides a method for separating feather fibers from a poultry feather raw material. The method comprises four steps, namely washing, stripping, carrying out multistage separation and drying, wherein in the step of multistage separation, the feather fibers are subjected to multistage separation by using slit type screens of different screen slit widths, the fine separation of the feather fibers is realized, more choices are provided for the further full utilization of the feather fibers, and thus, the application is more convenient. In addition, the method provided by the invention only comprises four steps, each step is simple and feasible and does not need complicated and expensive equipment, embodied in that only the step (3) of the four steps adopts the slit type screens as a multistage separation device for the feather fibers, and the slit type screens are common devices for papermaking and are simple in structure, so that the separating operation is simple, convenient and feasible.

Description

technical field

[0001] The invention relates to the field of fiber preparation, in particular to a method for separating feather fibers from poultry feather raw materials. Background technique

[0002] With the development of large-scale poultry farming industry, a large amount of feather by-products are produced. At present, the annual output of feather raw materials in my country is more than 1 million tons. The main component of feathers is β-keratin, and feather keratin molecules are very stable through disulfide bonds, hydrogen bonds and other cross-links. At present, except for the small proportion of down used in the textile industry, the main application of feather is to process it into feather protein powder and add it to livestock and poultry feed. Although feather meal has high protein value, stable supply and low price, it is difficult to digest and Lacking essential amino acids, it is considered to be the lowest value protein material for feed.

[0003] Howev...

Examples

Embodiment 1

[0026] (1) Clean the poultry feather raw material, and degrease and disinfect the feather during cleaning, and finally carry out gravity dehydration to the feather;

[0027] (2) Place the feathers treated in step (1) in water so that the mass ratio of feathers to water is 1:50, the water temperature is controlled at room temperature, and continuously stirred at a rate of 10,000 rpm for 20 minutes to obtain water and feather fibers mixture;

[0028] (3) The mass ratio of water and feather fiber is readjusted so that the mass percentage of feather fiber is 4%, and then the mixture of water and feather fiber is passed through a slotted sieve, and the sieve slot width is 0.35mm, and the rachis is divided by the sieve Based on the generally relatively coarse feather fiber fraction (ie, the feather fibers that do not pass through the sieve slots and remain on the sieve plate), a generally relatively fine feather fiber fraction 1 (ie, the feather fibers that pass through the sieve sl...

Embodiment 2

[0031] (1) Use a mesh sieve to screen out impurities such as sandstone, dust and dander entrained in the poultry feather raw material;

[0032] (2) further cleaning the poultry feather raw materials, and degreasing and disinfecting the feathers during the cleaning process, and finally pressing and dehydrating the feathers;

[0033] (3) Place the feathers treated in step (2) in water so that the mass ratio of feathers to water is 1:200, the water temperature is 90°C, and the water and feather fibers are obtained by stirring continuously at a rate of 25,000 rpm for 2 minutes. mixture;

[0034] (4) The mass ratio of water and feather fiber is readjusted so that the mass percentage of feather fiber is 0.5%, and then the mixture of water and feather fiber is passed through a slotted sieve, and the width is 0.20mm, 0.15mm and 0.10mm. sieve slots, and generally relatively thick feather fiber components (feather fibers that did not pass through the 0.20mm sieve slot) mainly composed ...

Embodiment 3

[0037](1) Use a mesh sieve to screen out impurities such as sandstone, dust and dander entrained in the poultry feather raw material;

[0038] (2) further cleaning the raw material of poultry feathers, and degreasing and disinfecting the feathers during the cleaning process, and finally carrying out centrifugal dehydration to the feathers; repeating this step once to make the purification effect more sufficient;

[0039] (3) Place the washed and dehydrated feathers in water, the mass ratio of feathers to water is 1:10, the water temperature is 60°C, and the mixture is continuously stirred at a rate of 1000 rpm for 120 minutes to obtain a mixture of water and feather fibers;

[0040] (4) the mass ratio of water and feather fiber is readjusted, and the mass percentage of feather fiber is 2.5%, and the slotted sieve that the mixture of water and feather fiber is passed through the sieve width of 0.25mm afterwards is screened out by rachis The generally relatively coarse feather f...

technical field

[0001] The invention relates to the field of fiber preparation, in particular to a method for separating feather fibers from poultry feather raw materials. Background technique

[0002] With the development of large-scale poultry farming industry, a large amount of feather by-products are produced. At present, the annual output of feather raw materials in my country is more than 1 million tons. The main component of feathers is β-keratin, and feather keratin molecules are very stable through disulfide bonds, hydrogen bonds and other cross-links. At present, except for the small proportion of down used in the textile industry, the main application of feather is to process it into feather protein powder and add it to livestock and poultry feed. Although feather meal has high protein value, stable supply and low price, it is difficult to digest and Lacking essential amino acids, it is considered to be the lowest value protein material for feed.

[0003] Howev...

Examples

Embodiment 1

[0026] (1) Clean the poultry feather raw material, and degrease and disinfect the feather during cleaning, and finally carry out gravity dehydration to the feather;

[0027] (2) Place the feathers treated in step (1) in water so that the mass ratio of feathers to water is 1:50, the water temperature is controlled at room temperature, and continuously stirred at a rate of 10,000 rpm for 20 minutes to obtain water and feather fibers mixture;

[0028] (3) The mass ratio of water and feather fiber is readjusted so that the mass percentage of feather fiber is 4%, and then the mixture of water and feather fiber is passed through a slotted sieve, and the sieve slot width is 0.35mm, and the rachis is divided by the sieve Based on the generally relatively coarse feather fiber fraction (ie, the feather fibers that do not pass through the sieve slots and remain on the sieve plate), a generally relatively fine feather fiber fraction 1 (ie, the feather fibers that pass through the sieve sl...

Embodiment 2

[0031] (1) Use a mesh sieve to screen out impurities such as sandstone, dust and dander entrained in the poultry feather raw material;

[0032] (2) further cleaning the poultry feather raw materials, and degreasing and disinfecting the feathers during the cleaning process, and finally pressing and dehydrating the feathers;

[0033] (3) Place the feathers treated in step (2) in water so that the mass ratio of feathers to water is 1:200, the water temperature is 90°C, and the water and feather fibers are obtained by stirring continuously at a rate of 25,000 rpm for 2 minutes. mixture;

[0034] (4) The mass ratio of water and feather fiber is readjusted so that the mass percentage of feather fiber is 0.5%, and then the mixture of water and feather fiber is passed through a slotted sieve, and the width is 0.20mm, 0.15mm and 0.10mm. sieve slots, and generally relatively thick feather fiber components (feather fibers that did not pass through the 0.20mm sieve slot) mainly composed ...

Embodiment 3

[0037](1) Use a mesh sieve to screen out impurities such as sandstone, dust and dander entrained in the poultry feather raw material;

[0038] (2) further cleaning the raw material of poultry feathers, and degreasing and disinfecting the feathers during the cleaning process, and finally carrying out centrifugal dehydration to the feathers; repeating this step once to make the purification effect more sufficient;

[0039] (3) Place the washed and dehydrated feathers in water, the mass ratio of feathers to water is 1:10, the water temperature is 60°C, and the mixture is continuously stirred at a rate of 1000 rpm for 120 minutes to obtain a mixture of water and feather fibers;

[0040] (4) the mass ratio of water and feather fiber is readjusted, and the mass percentage of feather fiber is 2.5%, and the slotted sieve that the mixture of water and feather fiber is passed through the sieve width of 0.25mm afterwards is screened out by rachis The generally relatively coarse feather f...

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