Adsorption-heatpump coupling drying system

A technology of drying system and heat pump system, applied in the directions of heat pump, drying gas arrangement, local stirring dryer, etc., can solve the problem of large cooling capacity consumption, achieve the effect of wide application range, increase speed and improve material quality

Inactive Publication Date: 2009-09-09
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The purpose of this invention is to propose an adsorption-heat pump coupling drying system for the limitation of the existing adsorption low-temperature drying process and the dehumidification method of freezing-adsorption combination, which combines freezing dehumidification, adsorption dehumidification and heat pump drying process Combined to increase the efficiency of the drying and dehumidification process and reduce the energy consumption of the process

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  • Adsorption-heatpump coupling drying system

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Embodiment 1

[0028] The present invention can be combined with figure 1 practice, but does not limit the scope of use of the present invention.

[0029] Combined with the specific components in the accompanying drawings, the application process of the adsorption-heat pump coupled drying system is as follows.

[0030] After the drying medium gas f of the drying system dries the materials in the drying box 6, the temperature of the gas decreases and the humidity increases, and is sent to the evaporator 2 of the heat pump system by the drying fan 12 to cool and dehumidify, and the moisture in the gas is condensed to remove, and the condensed moisture d is discharged from the drying system through the drain valve 3, the temperature of the cooled gas is further reduced, and becomes a low-temperature, low-humidity gas, which is sent to the adsorption dehumidifier 9 for further adsorption and dehumidification, the humidity of the gas is further reduced, and the dew point is as low as 40°C. The ...

Embodiment 2

[0035] 10kg of fresh shiitake mushrooms (with a moisture content of about 90%) are dried through processes such as sorting, cleaning, sterilizing pretreatment, and draining. The drying process conditions are as follows: the drying medium is air, the temperature of the drying medium is 60° C., and the relative humidity is 2%. During the drying process, the high-humidity air temperature at the outlet of the drying box 6 is 45°C, and the relative humidity is 90%; the air flow is cooled by the evaporator 2 of the heat pump system to remove a large amount of moisture. 96%; the airflow is further adsorbed and dehumidified by the adsorption dehumidifier 9, the temperature rises to 30°C, and the relative humidity drops to 10%; the airflow is finally further adjusted to a temperature of 60°C and a relative humidity of 2% through the condenser 8 of the heat pump system , enter drying box 6 and carry out mushroom drying. Dry the shiitake mushrooms until the water content is 15%, stop dr...

Embodiment 3

[0037] 5kg of fresh tangerines (moisture content about 80%) are dried through operations such as finishing, cleaning, and draining. The drying process conditions are as follows: the drying medium is carbon dioxide, the temperature of the drying medium is 50° C., and the relative humidity is 5%. Dry to a moisture content of 3%, stop drying. The orange peel obtained after drying maintains bright color and strong smell, and saves energy by 50-55% compared with freeze-drying.

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Abstract

The invention relates to an adsorption-heatpump coupling drying system which is formed by coupling a heatpump system, a drying system and an adsorption dehumidifying system, wherein the heatpump system comprises a heatpump set 1, an evaporator 2, a throttle valve 4 and a condenser 8; the drying system comprises a drying box 6, a filter 7 and a drying fan 12; and the adsorption dehumidifying system comprises an adsorption dehumidifier 9, a recuperative fan 11 and a heater 10. The coupling course of the adsorption-heatpump coupling drying system comprises the following steps: drying medium gas f is led into the evaporator 2 by the drying fan 12 after drying material in the drying box 6, then enters the adsorption dehumidifier 9 for adsorption and dehumidification, and enters the condenser 8 to be adjusted to the drying temperature, finally enters into the drying box 6 for drying material after passing through the filter 7. The adsorption-heatpump coupling drying system has the advantages of high drying speed, high quality of dried material, low energy consumption during drying, and the like.

Description

technical field [0001] The invention relates to an adsorption-heat pump coupled drying system, which combines the advantages of basically no damage to material quality in the adsorption drying process and energy saving in the heat pump drying process, and belongs to the high-efficiency combined drying process and technical field. Background technique [0002] The drying of heat-sensitive materials, that is, materials sensitive to temperature (mainly high temperature) (such as food, fruits and vegetables, medicines, fabrics and grain seeds, etc.) is a hot topic of research at home and abroad. [0003] The nutritional ingredients of most foods are heat-sensitive materials. If processed improperly, the nutritional ingredients (such as vitamins, etc.) will be damaged to varying degrees. [0004] Fruits and vegetables are mostly heat-sensitive materials. During the drying process, their quality will be degraded due to the influence of drying methods and operating parameters: the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B9/06F26B21/04F25B30/00B01D53/26
CPCY02P70/10
Inventor 陈海军崔群王海燕徐健
Owner NANJING UNIV OF TECH
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