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Low-oxygen sulfur-free drying method and device

A technology of drying room and drying table, applied in drying, drying machine, separation method, etc., can solve the problems of low drying technology level, uneven quality, difficult upgrading and transformation, etc., so as to facilitate market promotion and coupling Convenience and the effect of improving the quality of goods

Pending Publication Date: 2022-07-26
坤育环境发展(云南)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a low-oxygen and sulfur-free drying method, which solves the problems of low level of drying technology, uneven quality, poor color quality, excessive sulfur and difficult upgrading and transformation.

Method used

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  • Low-oxygen sulfur-free drying method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] like figure 1 , 2 As shown, the low-oxygen and sulfur-free drying device includes a refrigeration compression dehumidifier 1, an air compressor 2, a filter 3, a nitrogen-oxygen separation device 7, an oxygen storage tank 11, a nitrogen storage tank 12, a blower 13, and a heating device 14. , return heat exchanger 15, drying room 26, refrigerated compression dehumidifier 1 is connected with filter 3 through air compressor 2, the filter is a filter device with a plurality of HEPA filter screens arranged in the shell, and filter 3 is connected to the The nitrogen and oxygen separation device 7 is connected and the pipeline is provided with a valve I4 and a flow controller 5, wherein the nitrogen and oxygen separation device 7 includes a magnetic field generator 8, a nitrogen and oxygen separation unit, and a casing. The magnetic field generator is arranged at the bottom of the casing, and the nitrogen and oxygen separation device Set in the casing and above the magnetic f...

Embodiment 2

[0022] Embodiment 2: The device of this embodiment is the same as that of Embodiment 1;

[0023] The above-mentioned device is used for the drying of roses. Specifically, the air is passed into the refrigerated compression dehumidifier 1 and cooled to 5°C. After the relative humidity is 5%, the gas is pressurized by the air compressor (1MPa), and then enters the filter 3 to remove dust. After the particulate impurities enter the nitrogen and oxygen separation device 7, the gas flow rate is adjusted to 4.0m / s by the flow controller 5, and under the action of the magnetic field (the magnetic force density is 6×10 6 N / m 3) to achieve nitrogen and oxygen separation, obtain nitrogen gas with an oxygen content of 5%, and the separated oxygen is recycled into the biomass combustion furnace to achieve sulfur-free, oxygen-rich and low-nitrogen combustion. The heat medium of the heater is obtained by pumping air into the biomass combustion furnace through the blower 13, and the hot air...

Embodiment 3

[0025] The device of this embodiment is the same as that of Embodiment 1;

[0026] The above-mentioned device is used for the drying of tobacco leaves, specifically, the air is passed into the refrigerated compression dehumidifier 1 to cool down to 9°C, and after the relative humidity is 8%, the gas is pressurized by the air compressor (0.7MPa), and then enters the filter 3 to remove dust. After the particulate impurities enter the nitrogen and oxygen separation device 7, the gas flow rate is adjusted to 4.2m / s with the flow controller 5, and under the action of the magnetic field (the magnetic force density is 1×10 7 N / m 3 ) to realize the separation of nitrogen and oxygen to obtain nitrogen gas with an oxygen content of 8%. The separated oxygen is recycled into the biomass combustion furnace to realize sulfur-free, oxygen-rich and low-nitrogen combustion. The separated nitrogen passes through the regenerative heat exchanger (return conversion The heat medium of the heater i...

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Abstract

The invention discloses a low-oxygen sulfur-free drying method, which comprises the following steps of: introducing air into a freezing compression dehumidifier, cooling to below 10 DEG C, pressurizing gas by an air compressor, removing dust particle impurities by a filter, and then introducing the gas into a nitrogen-oxygen separation device; under the action of a nitrogen-oxygen separation membrane coupling magnetic field, nitrogen-oxygen separation is achieved, nitrogen gas with the oxygen content lower than 5% is obtained, oxygen obtained through separation enters an oxygen storage tank to be stored, the nitrogen gas is heated and then introduced into a drying room, it is guaranteed that the nitrogen concentration in the drying room is 85%-95%, and low-oxygen sulfur-free drying of materials is achieved; the method is simple, the drying cost is low, coupling with an intelligent control system is convenient, modification and upgrading can be conducted on an existing continuous batch type drying room or a continuous type drying production line, and market popularization is facilitated.

Description

technical field [0001] The patent of the present invention relates to the technical field of agriculture and equipment manufacturing, and specifically relates to a method and device for low-oxygen and sulfur-free drying. Background technique [0002] my country has been a big agricultural country since ancient times, and agriculture has always been the lifeblood of the national economy. In agricultural production activities, a large number of fresh products obtained during the harvest period, such as konjac, wolfberry, flowers, spices, Chinese medicinal materials, etc., are generally difficult to store for a long time, and drying is a necessary method for transportation, storage and post-processing and utilization. . At present, a considerable part of drying is air-dried, which is seriously affected by the climate and requires a large area of ​​drying sites. However, traditional coal-fired sulfur fumigation not only pollutes the environment, but also causes uncontrollable d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/10B01D46/56B01D53/22B01D53/00C01B21/04F26B21/14
CPCB01D46/10B01D53/228B01D53/007C01B21/0405C01B21/0438F26B21/14B01D2259/814C01B2210/0045C01B2210/0098
Inventor 瞿广飞李应丽刘民凯刘七仙
Owner 坤育环境发展(云南)有限公司