Feed production drying method

Abstract

The invention discloses a feed production drying method which comprises the following steps: step 1, conveying a liquid material needing to be dried into a spray drying tower through a plurality of groups of spray guns, and then conveying dried and dehumidified low-pressure steam and high-pressure steam into the spray drying tower, so that the steam can evaporate moisture in the liquid material; 2, materials in the tail gas of the spray drying tower are subjected to cyclone recovery, then the materials subjected to cyclone recovery and the dried materials in the spray drying tower are collected and packaged through a cold air collecting system, and a material finished product can be obtained; according to the DDS production device, low-pressure steam and high-pressure steam can be dried and dehumidified, the dryness of the low-pressure steam and the high-pressure steam is improved, the drying efficiency of liquid materials is improved, and therefore the working efficiency of DDS production is improved; and meanwhile, the dried materials can be cooled, the dried materials can be conveniently packaged, the working quality and working efficiency of DDS production are further improved, and the overall design is reasonable.

Description

Technical Field

[0001] The present invention relates to the technical field of DDS drying, and specifically to a drying method for feed production. Background Art

[0002] DDGS means dried distillers grains and solubles, which is a good feed raw material rich in protein, energy and minerals, and is added to the animal nutrition formula as a raw material rich in three nutrients. The DDGS production process mainly consists of three parts: solid separation (DDG), concentration of the separated liquid (DDS), and mixing and drying of the solid and the concentrated liquid (DDGS). However, during the production of the existing DDS, it is impossible to dry and dehumidify the steam transported to the spray drying tower, so it is impossible to improve the dryness of low-pressure steam and high-pressure steam, reducing the drying efficiency of the liquid material, and thus reducing the working efficiency of DDS production. Therefore, we propose a drying method for feed production to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a drying method for feed production to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A drying method for feed production includes the following steps:

[0006] Step 1: Transport the liquid material to be dried into the spray drying tower through multiple groups of spray guns, and then transport the dried and dehumidified low-pressure steam and high-pressure steam into the spray drying tower, so that the steam can evaporate the moisture in the liquid material;

[0007] Step 2: Cyclone recover the materials in the tail gas of the spray drying tower, and then collect and package the materials recovered by cyclone and the dried materials in the spray drying tower through a cold air material collection system to obtain the finished material.

[0008] As a further solution of the present invention: In the step 1 where the liquid material to be dried is transported into the spray drying tower through multiple groups of spray guns, and then the dried and dehumidified low-pressure steam and high-pressure steam are transported into the spray drying tower, so that the steam can evaporate the moisture in the liquid material, there are eight groups of spray guns.

[0009] As a further solution of the present invention: In the step 1 where the liquid material to be dried is transported into the spray drying tower through multiple groups of spray guns, and then the dried and dehumidified low-pressure steam and high-pressure steam are transported into the spray drying tower, so that the steam can evaporate the moisture in the liquid material, the mixing temperature of the low-pressure steam and the high-pressure steam is 170°C - 180°C.

[0010] As a further solution of the present invention: In step one, a plurality of groups of spray guns are used to convey the liquid material to be dried into the spray drying tower, and then the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, so that the steam can evaporate the moisture in the liquid material. The temperature of the conveyed liquid material is 60°C - 70°C.

[0011] As a further solution of the present invention: In step one, a plurality of groups of spray guns are used to convey the liquid material to be dried into the spray drying tower, and then the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, so that the steam can evaporate the moisture in the liquid material. Before conveying the liquid material, water is conveyed through a water inlet valve to preheat the device system.

[0012] As a further solution of the present invention: In step one, a plurality of groups of spray guns are used to convey the liquid material to be dried into the spray drying tower, and then the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, so that the steam can evaporate the moisture in the liquid material. The humidity of the low-pressure steam and high-pressure steam is lower than 30%.

[0013] As a further solution of the present invention: In step one, a plurality of groups of spray guns are used to convey the liquid material to be dried into the spray drying tower, and then the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, so that the steam can evaporate the moisture in the liquid material. A plurality of groups of air hammers are arranged on the spray drying tower to hammer the side wall of the spray drying tower.

[0014] As a further solution of the present invention: In step two, the material in the tail gas of the spray drying tower is cyclone recovered, and then the cyclone-recovered material and the dried material in the spray drying tower are collected and packaged through a cold air material collection system, and the finished material can be obtained. The temperature of the tail gas is 80°C.

[0015] As a further solution of the present invention: In step two, the material in the tail gas of the spray drying tower is cyclone recovered, and then the cyclone-recovered material and the dried material in the spray drying tower are collected and packaged through a cold air material collection system, and the finished material can be obtained. The tail gas after cyclone recovery enters two groups of spray towers for cooling and filtration.

[0016] As a further solution of the present invention: In step two, the material in the tail gas of the spray drying tower is cyclone recovered, and then the cyclone-recovered material and the dried material in the spray drying tower are collected and packaged through a cold air material collection system, and the finished material can be obtained. The moisture content of the finished material is 5%.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In this feed production drying method, liquid materials to be dried are conveyed into a spray drying tower through multiple groups of spray guns. Then, low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid materials. The materials in the tail gas of the spray drying tower are recovered by a cyclone, and then the materials recovered by the cyclone and the dried materials in the spray drying tower are collected and packaged through a cold air material collection system, thus obtaining the finished material products. It can dry and dehumidify low-pressure steam and high-pressure steam, improve the dryness of low-pressure steam and high-pressure steam, enhance the drying efficiency of liquid materials, and thereby improve the working efficiency of DDS production. At the same time, it can cool the dried materials, facilitating the packaging of the dried materials, further improving the working quality and working efficiency of DDS production. The overall design is reasonable. Without reducing the quality of feed products, it effectively reduces the steam consumption of the device, lowers the operating cost, has the advantages of reliable process, investment saving, and small floor area, and is easy to realize industrial large-scale production applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic flow chart of the feed production drying method of the present invention.

[0020] Figure 2 It is a schematic diagram of the device of the feed production drying method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In one embodiment, as Figure 1 - Figure 2 shown, a feed production drying method includes the following steps:

[0022] Step 1: Convey liquid materials to be dried into a spray drying tower through multiple groups of spray guns. Then, convey low-pressure steam and high-pressure steam after drying and dehumidification into the spray drying tower, enabling the steam to evaporate the moisture in the liquid materials.

[0023] Step 2: Recover the materials in the tail gas of the spray drying tower by a cyclone, and then collect and package the materials recovered by the cyclone and the dried materials in the spray drying tower through a cold air material collection system, thus obtaining the finished material products.

[0024] The liquid materials prepared by the present invention are wheat dried distillers grains solubles, and the obtained finished material products are used for feeding piglets.

[0025] In Step 1, where liquid materials to be dried are conveyed into a spray drying tower through multiple groups of spray guns, and then low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid materials, there are eight groups of spray guns.

[0026] In Step 1, a multi-group of spray guns are used to convey the liquid material to be dried into the spray drying tower. Then, the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid material. The temperature of the mixture of the low-pressure steam and the high-pressure steam is 170°C - 180°C;

[0027] In Step 1, a multi-group of spray guns are used to convey the liquid material to be dried into the spray drying tower. Then, the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid material. The temperature of the conveyed liquid material is 60°C - 70°C;

[0028] In Step 1, a multi-group of spray guns are used to convey the liquid material to be dried into the spray drying tower. Then, the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid material. Before conveying the liquid material, water is conveyed through a water inlet valve to preheat the device system;

[0029] In Step 1, a multi-group of spray guns are used to convey the liquid material to be dried into the spray drying tower. Then, the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid material. The humidity of the low-pressure steam and the high-pressure steam is less than 30%;

[0030] In Step 1, a multi-group of spray guns are used to convey the liquid material to be dried into the spray drying tower. Then, the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid material. Multiple groups of pneumatic hammer devices are arranged on the spray drying tower to hammer the side wall of the spray drying tower;

[0031] In Step 1, a multi-group of spray guns are used to convey the liquid material to be dried into the spray drying tower. Then, the low-pressure steam and high-pressure steam after drying and dehumidification are conveyed into the spray drying tower, enabling the steam to evaporate the moisture in the liquid material. By setting up an air inlet dehumidification group to dehumidify the air, the low-pressure steam and high-pressure steam can be dried and dehumidified, improving the dryness of the low-pressure steam and high-pressure steam, enhancing the drying efficiency of the liquid material, and thus improving the working efficiency of DDS production.

[0032] In Step 2, the materials in the tail gas of the spray drying tower are cyclone recovered. Then, through the cold air material collection system, the cyclone-recovered materials and the dried materials in the spray drying tower are collected and packaged to obtain the finished material. The temperature of the tail gas is 80°C;

[0033] In Step 2, the materials in the tail gas of the spray drying tower are cyclone recovered, and then the materials recovered by cyclone and the dried materials in the spray drying tower are collected and packaged through a cold air material collection system to obtain the finished product of the materials. After cyclone recovery, the tail gas enters two groups of spray towers for cooling and filtration;

[0034] In Step 2, the materials in the tail gas of the spray drying tower are cyclone recovered, and then the materials recovered by cyclone and the dried materials in the spray drying tower are collected and packaged through a cold air material collection system to obtain the finished product of the materials. The moisture content of the finished product of the materials is about 5%.

[0035] In the present invention, a plurality of spray guns are used to convey the liquid materials to be dried into the spray drying tower, and then the low-pressure steam and high-pressure steam after drying and dehumidifying are conveyed into the spray drying tower so that the steam can evaporate the moisture in the liquid materials; the materials in the tail gas of the spray drying tower are cyclone recovered, and then the materials recovered by cyclone and the dried materials in the spray drying tower are collected and packaged through a cold air material collection system to obtain the finished product of the materials; the low-pressure steam and high-pressure steam can be dried and dehumidified, the dryness of the low-pressure steam and high-pressure steam is improved, the drying efficiency of the liquid materials is improved, and thus the working efficiency of DDS production is improved; at the same time, the dried materials can be cooled to facilitate the packaging of the dried materials, further improving the working quality and working efficiency of DDS production; the overall design is reasonable, effectively reducing the steam consumption of the device and lowering the operation cost while not reducing the quality of the feed product, having the advantages of reliable process, investment saving, and small floor area, and being easy to realize industrial large-scale production application.

[0036] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A feed production drying method, characterized in that: The following steps are involved: Step 1: transport the liquid material to be dried to the spray drying tower through multiple groups of spray guns, and then transport the low-pressure steam and high-pressure steam after drying and dehumidification to the spray drying tower, so that the steam can evaporate the water in the liquid material; Step 2: The material in the tail gas of the spray drying tower is recovered by cyclone, and then the cyclone-recovered material and the material dried in the spray drying tower are collected and packaged by the cold air collection system to obtain the finished material.

2. A feed production drying method according to claim 1, characterized in that: In the step 1, liquid materials to be dried are transported to the spray drying tower through multiple groups of spray guns, and then the low-pressure steam and high-pressure steam after drying and dehumidification are transported to the spray drying tower, so that the steam can evaporate the water in the liquid materials. There are eight groups of spray guns.

3. A feed production drying method according to claim 1, characterized in that: In the step 1, liquid materials to be dried are transported to the spray drying tower through multiple groups of spray guns, and then the low-pressure steam and high-pressure steam after drying and dehumidification are transported to the spray drying tower, so that the steam can evaporate the water in the liquid materials. The temperature of the mixture of the low-pressure steam and the high-pressure steam is 170° C.-180° C.

4. A feed production drying method according to claim 1, characterized in that: In the step 1, liquid materials to be dried are transported to the spray drying tower through multiple groups of spray guns, and then the low-pressure steam and high-pressure steam after drying and dehumidification are transported to the spray drying tower, so that the steam can evaporate the water in the liquid materials. The temperature of the transported liquid materials is 60°C-70°C.

5. A feed production drying method according to claim 1, characterized in that: In the step 1, liquid materials to be dried are transported to the spray drying tower through multiple groups of spray guns, and then the low-pressure steam and high-pressure steam after drying and dehumidification are transported to the spray drying tower, so that the steam can evaporate the water in the liquid materials. Before transporting the liquid materials, water is transported through the water inlet valve to preheat the device system.

6. A feed production drying method according to claim 1, characterized in that: In the step 1, liquid materials to be dried are transported to the spray drying tower through multiple groups of spray guns, and then the low-pressure steam and high-pressure steam after drying and dehumidification are transported to the spray drying tower, so that the steam can evaporate the water in the liquid materials, and the humidity of the low-pressure steam and the high-pressure steam is less than 30%.

7. A feed production drying method according to claim 1, characterized in that: In the step 1, liquid materials to be dried are transported to the spray drying tower through multiple groups of spray guns, and then low-pressure steam and high-pressure steam after drying and dehumidification are transported to the spray drying tower, so that the steam can evaporate the water in the liquid materials. Multiple groups of air hammer devices are arranged on the spray drying tower to hammer the side wall of the spray drying tower.

8. A feed production drying method according to claim 1, characterized in that: In the step 2, the material in the tail gas of the spray drying tower is recovered by cyclone, and then the material recovered by the cyclone and the material dried in the spray drying tower are collected and packaged by the cold air collection system, so that the finished material can be obtained, and the temperature of the tail gas is 80°C.

9. A feed production drying method according to claim 1, characterized in that: In the step 2, the material in the tail gas of the spray drying tower is recovered by cyclone, and then the material recovered by the cyclone and the material dried in the spray drying tower are collected and packaged by the cold air collection system to obtain the finished material. The tail gas recovered by the cyclone enters two groups of spray towers for cooling and filtration.

10. A feed production drying method according to claim 1, characterized in that: In the step 2, the material in the tail gas of the spray drying tower is recovered by cyclone, and then the material recovered by the cyclone and the material dried in the spray drying tower are collected and packaged by the cold air collection system to obtain the finished material, and the moisture content of the finished material is 5%.

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