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Heat pump carrier gas flow-through type continuous drying equipment

A technology of drying equipment and carrier gas, applied in lighting and heating equipment, heating to dry solid materials, drying solid materials, etc., can solve the problems of reduced effective working volume of dryers, unfavorable equipment maintenance and repair, and increased volume of drying towers, etc. , to achieve the effect of reducing operating costs, simple structure, and increasing overall reliability

Inactive Publication Date: 2010-08-11
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This design requires the use of a large amount of heat pump working medium, a large amount of coils, and a complex structure, which is not conducive to equipment maintenance and repair, and at the same time reduces the effective working volume of the dryer and increases the volume of the drying tower

Method used

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  • Heat pump carrier gas flow-through type continuous drying equipment

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Embodiment 1

[0015] The equipment disclosed by the invention is used to dry distiller's grains. Distiller's grains are an important by-product of liquor production. According to statistics, the output of distiller's grains has reached 15 million tons. Faced with such a huge amount of resources, my country has conducted a lot of research on this, for example, using distiller's grains to cultivate edible fungi, extract compound amino acids and trace elements, extract phytic acid and calcium phytate, extract protein, and produce amylase or cellulase , using vinasse anaerobic fermentation to recover biogas, produce feed protein, and produce γ-aminobutyric acid, etc. Although there are so many methods, the utilization rate of distiller's grains is still not high at present. A limiting factor that limits the full utilization of distiller's grains resources is that the pH of freshly discarded grains is low, and the moisture content is high (above 60%), which is easy to spoil and deteriorate, which...

Embodiment 2

[0018] Drying of wheat is carried out with the equipment disclosed by the present invention. With a volume of 5m 3 The heat pump carrier gas flow-through continuous drying equipment is used to dry wheat with a water content of 17%. The drying tower used is 1.14m in diameter and 5m in height. There are 5 baffles installed inside, and the installation angle is 35°. It is equipped with SL80WD Luo Ci fan (motor power 7.5kw), carrier gas flow rate is 15m 3 / min, equipped with a corresponding heat pump system, adjust the inlet temperature of the carrier gas (air) to 47-50°C, the cooling temperature to 4-6°C, the drying speed of the material is 15 tons of wheat / day, and the power of the heat pump system is 5kW / h, the moisture content of export wheat is 12.5%.

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Abstract

The invention discloses a heat pump carrier gas flow-through type continuous drying equipment which is composed of a drying tower, a heat pump system and a circulating system, wherein the circulating system couples the drying tower and the heat pump system which continuously charges and discharges into a whole capable of continuously operating, and material is dried by circulating carrier gas heated by the heat pump system in the continuous flowing-in and flowing-out processes from a high-pressure rotary valve on the top and the bottom of the drying tower. The invention utilizes the heat pump system to provide a heat source in the drying process so as to effectively lower energy consumption and improve equipment operation economy. The equipment can cool carrier gas by the heat pump system in the operation process, can recycle high-value volatility components contained in the drying material and enlarge equipment application range.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a continuous drying equipment of a heat pump carrier gas through-flow type suitable for granular or powdery materials. Background technique [0002] In chemical production, drying usually refers to heating wet solid materials with hot air, flue gas, microwave and infrared rays to vaporize and remove the moisture or solvent contained therein, which is a unit operation belonging to the heat and mass transfer process. Drying operation is widely used in various departments such as chemical industry, food, light industry, textile, coal, agricultural and forestry product processing and building materials. Drying operation requires a lot of energy consumption. Research by Italian scientists shows that the energy consumption of rice drying and processing accounts for 64% of the total energy consumption of rice production and processing. With the increasingly serious global e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B17/14F26B3/02F26B21/04
CPCY02B30/123Y02B30/52
Inventor 陈洪章李宏强
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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