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Circular nitrogen drying device with solvent recovering function

A circulating drying and solvent technology, applied in the direction of drying gas arrangement, drying solid materials, drying solid materials without heating, etc., can solve the problems of air pollution, production cost increase, air discharge into the atmosphere, etc.

Inactive Publication Date: 2017-09-01
北京科瑞博远科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defects of the traditional drying process are as follows: 1. The discharged gas includes solvent vapor. Due to the low solvent content in the gas, it is difficult to recover, and a large amount of air with solvent is discharged into the atmosphere, causing atmospheric environmental pollution and waste of resources; 2. Air It is easy to explode after mixing with solvent vapor; 3. In order to control the content of solvent vapor in the dryer, a large amount of heated air is introduced, resulting in energy waste
If nitrogen is used instead of air, the large amount of nitrogen used will cause an increase in production costs

Method used

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  • Circular nitrogen drying device with solvent recovering function
  • Circular nitrogen drying device with solvent recovering function

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Embodiment Construction

[0053] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.

[0054] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

[0055] refer to figure 1 with figure 2 , In one embodiment, the nitrogen circulation drying device with solvent recovery function provided by the present invention includes sequentially connected along the flow direction of the drying medium: a heater 1, a dryer 2, a vacuum pump 9, a compressor 3, a gas condenser 4 and a gas The liquid separator 5 and the gas-liquid separat...

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Abstract

The invention provides a circular nitrogen drying device with a solvent recovering function. The circular nitrogen drying device comprises a heater, a drier, a vacuum pump, a compressor, a gas condenser and a gas-liquid separator which are sequentially connected in the flowing direction of a drying medium. The gas-liquid separator is provided with a liquid draining opening and an exhausting opening. The exhausting opening is connected with an inlet of the heater. The drying medium does not contain oxygen. The circular nitrogen drying device with the solvent recovering function can recover solvent in the drying medium, prevent explosion, reduce flow of the working medium and save energy.

Description

technical field [0001] The invention belongs to the field of pharmacy, in particular to a nitrogen circulation drying device with solvent recovery function. Background technique [0002] In the traditional medicine drying process in pharmaceutical production, the air is preheated first, and then enters the dryer in the opposite direction of the product entering direction, where the solvent evaporates and is discharged into the atmosphere together with the air, so that the solvent content in the medicine is reduced. to the specified level. Because solvents are flammable, large volumes of air are required to keep the evaporated solvent content at a low level so that the gas in the dryer does not reach explosive levels. The defects of the traditional drying process are as follows: 1. The discharged gas includes solvent vapor. Due to the low solvent content in the gas, it is difficult to recover, and a large amount of air with solvent is discharged into the atmosphere, causing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/04F26B21/14F26B25/00
CPCF26B5/042F26B21/14F26B25/008
Inventor 张桂华周旭康谢博亮周玉
Owner 北京科瑞博远科技有限公司
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