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A method for drying and cooling pellet feed

A pellet feed, drying and cooling technology, applied in the direction of feed, drying solid materials, heating to dry solid materials, etc., to achieve the effect of facilitating absorption and digestion, reducing moisture and temperature gradient, and easy vaporization and evaporation

Active Publication Date: 2021-02-23
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new method of drying and cooling pellet feed to solve many problems faced in the cooling and drying of traditional pellet feed in our country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for drying and cooling pellet feed, comprising the following steps:

[0027] (1) Vacuum microwave drying will be carried out to the pellet feed produced from the granulator, wherein the vacuum degree of the first stage is 40kPa, the microwave power is 4000W, and the time is 250s, and then the second stage vacuum microwave drying is carried out, and the vacuum degree is 250s. 75kPa, microwave power is 1200W, stop vacuum microwave drying when the moisture content of pellet feed wet basis drops to 14-15%;

[0028] (2) Carry out cold air drying to the pellet feed after vacuum microwave drying, wherein, wind speed is 6m / s, temperature is 15 ℃, stop cold air drying when the moisture content of pellet feed wet basis is reduced to below 12%;

[0029] (3) Sieve the dried and cooled pellet feed, put it into a packaging bag, attach the pellet feed label and pack it into the warehouse. The pulverization rate of the obtained granule feed is 4.2%, the gelatinization degree ...

Embodiment 2

[0031] A method for drying and cooling pellet feed, comprising the following steps:

[0032] (1) Vacuum microwave drying will be carried out to the pellet feed produced from the granulator, wherein the vacuum degree of the first stage is 60kPa, the microwave power is 3000W, and the time is 300s, and then the second stage vacuum microwave drying is carried out, and the vacuum degree is 85kPa, microwave power 900W, stop vacuum microwave drying when the moisture content of pellet feed wet basis drops to 14-15%;

[0033] (2) Carry out cold air drying to the pellet feed after vacuum microwave drying, wherein, wind speed is 4m / s, temperature is 20 ℃, stop cold air drying when the moisture content of pellet feed wet basis is reduced to below 12%;

[0034] (3) Sieve the dried and cooled pellet feed, put it into a packaging bag, attach the pellet feed label and pack it into the warehouse. The pulverization rate of the obtained granule feed is 3.9%, the gelatinization degree is 0.57, a...

Embodiment 3

[0036] A method for drying and cooling pellet feed, comprising the following steps:

[0037] (1) Carry out the vacuum microwave drying of the pellet feed produced from the granulator, wherein the vacuum degree of the first stage is 55kPa, the microwave power is 3500W, and the time is 270s, and then the second stage vacuum microwave drying is carried out, and the vacuum degree is 80kPa, microwave power 1100W, stop vacuum microwave drying when the moisture content of pellet feed wet basis drops to 14-15%;

[0038](2) Carry out cold air drying to the pellet feed after vacuum microwave drying, wherein, the wind speed is 5m / s, the temperature is 18 ℃, stop cold air drying when the moisture content of pellet feed wet basis is reduced to below 12%;

[0039] (3) Sieve the dried and cooled pellet feed, put it into a packaging bag, attach the pellet feed label and pack it into the warehouse. The pulverization rate of the obtained granule feed is 2.1%, the gelatinization degree is 0.62,...

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Abstract

The invention relates to a method for drying and cooling granular feed, which belongs to the technical field of feed processing. The processing method comprises the following operation steps: first-stage vacuum microwave drying, second-stage vacuum microwave drying, cold air drying and sieving packaging of pellet feed. The present invention has the following advantages: (1) adopting the combined method of vacuum microwave drying and cold air drying, the drying speed is accelerated, the pulverization rate of the feed is reduced, the durability of the pellets is improved, and the quality of the feed is improved; (2) Vacuum microwave drying promotes the further gelatinization of starch in pellet feed, effectively improves the digestion and absorption rate of feed, and improves the nutritional value of feed; (3) It can further kill harmful bacteria and anti-nutritional factors in feed, and improve the hygiene of pellet feed condition.

Description

technical field [0001] The invention relates to a method for drying and cooling granular feed, which belongs to the technical field of feed processing. Background technique [0002] Feed is the material basis for the development of modern animal husbandry and aquaculture, is an important part of the modern agricultural industry system, and plays an extremely important role in the national economy (Ding Qiang, Wang Zhengnan. The status and influence of the feed industry in the national economy [J ]. Feed Research, 2010 (2): 13-14). my country's feed industry started late, but has a large demand and rapid development. In 2016, the total national feed output was about 210 million tons, and it has become the most important feed producer in the world (National Animal Husbandry Central Station. 2016 National Feed Industry Statistics [J]. China Feed, 2017(13): 1~2). Among them, compared with powder feed, pellet feed has the following advantages: it can improve the situation of ani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B5/04F26B3/347A23N17/00A23L3/54
CPCA23L3/54A23N17/00F26B3/347F26B5/04
Inventor 彭飞方芳王红英
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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