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Low-consumption combined drying technique for residue materials

A technology of combined drying and process methods, which is applied in the direction of drying solid materials, drying solid materials, drying, etc. by combining methods, can solve the problem that the energy consumption of dross materials cannot be further reduced, and achieve reduced consumption costs and low added value , the effect of low energy consumption

Inactive Publication Date: 2013-09-04
GUANGDONG PROVINCE MODERN AGRI EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are other special drying equipment for dross materials in China, but they still rely on energy consumption to remove the moisture of dregs materials with hot air, which cannot further reduce the energy consumption of dregs materials and minimize the cost of product drying

Method used

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  • Low-consumption combined drying technique for residue materials
  • Low-consumption combined drying technique for residue materials

Examples

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Embodiment Construction

[0018] figure 1 Shows the most preferred embodiment of the present invention, dehydrating the dregs with a moisture content of more than 80% through a belt filter press 11 to a moisture content of 65%, the effective components of the dregs can be maximized under this moisture Retained, and at the same time, no natural dripping, the filtrate is treated in a centralized manner, which can prevent the filtrate from polluting the environment. Lay it flat in the specially designed solar dryer 1 to dry for 24 hours, and dry to 35% water content. When the sun is sufficient during the day, the solar dryer 1 will automatically turn on the auxiliary fan 7 according to the temperature or humidity therein to absorb natural wind for heat dissipation; rainy days and When the sunlight is insufficient at night, the hot air produced by burning coal in the coal-fired hot blast stove 6 is used to pass through the air divider 8 and a small amount of high-temperature hot air enters the air homogeni...

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Abstract

The invention discloses a low-consumption combined drying technique for residue materials. The dewatering and drying technique comprises four steps: belt filter pressing, solar energy airing, rotary barrel drying and back flow cooling. According to the technique, in the step of belt filter pressing, the water in the residue materials is reduced from 80% to 65% through a belt filter press 11, 55.46% of the total removed water is removed; in the step of solar energy airing, the water in the residue materials is reduced from 65% to 33%, 34.13% of the total removed water is removed; in the step of high temperature rotary drying, the water in the residue materials is reduced from 35% to 15%, 9.37% of the total removed water is removed; in the step of back flow cooling, the water in the residue materials is reduced from 15% to 12%, and 1.04% of the total removed water is removed. By means of the low-consumption combined drying technique for the residue materials, the energy-saving effect is obvious, and 65kg coals and 35kw*h power are consumed for per ton of residue materials in theory.

Description

technical field [0001] The invention belongs to the technical field of dehydration and drying of dross materials, and in particular relates to a low-energy-consumption combined drying process for dross materials. Background technique [0002] Slag material is a high-quality feed material that can be widely developed and utilized. It is rich in trace elements and protein, has high feeding value, and its output is very considerable. [0003] The initial moisture content of dross materials is relatively high, generally around 80%. Direct hot air drying to products with a moisture content of 12% will result in a large amount of dehydration and high energy consumption. According to theoretical calculations, 1,000kg of products will be obtained by pure hot air drying, and 4,400kg of wet materials, The total amount of water removal is 3400kg, and the energy consumption is 4.08x10 6 kcal (calculated as 1200kcal per 1kg of water removed), coal consumption per ton of product is 680kg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B7/00
Inventor 刘清化胡光华汤石生李浩权
Owner GUANGDONG PROVINCE MODERN AGRI EQUIP RES INST