High-efficiency recycling process of ethyl acetate resin

A technology of ethyl acetate and resin, which is applied in the field of high-efficiency ethyl acetate resin recycling technology, can solve problems such as low production efficiency and poor product quality, reduce material waste and recycling costs, improve work efficiency and precision, and simplify the recycling process Effect

Inactive Publication Date: 2019-05-03
焦作健康元生物制品有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention discloses a high-efficiency ethyl acetate resin recovery process to

Method used

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  • High-efficiency recycling process of ethyl acetate resin
  • High-efficiency recycling process of ethyl acetate resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 Shown a kind of efficient ethyl acetate resin recovery process, comprises the steps:

[0018] The first step is tail gas pretreatment. The tail gas containing ethyl acetate is firstly filtered and separated from solid pollutants, and then the separated tail gas is transported to the tail gas buffer tank, and the collected tail gas is irradiated through the tail gas buffer tank. Heating to keep the temperature of the exhaust gas at 40°C, and the pressure in the exhaust buffer tank at 0.8 times the standard atmospheric pressure;

[0019] In the second step, ethyl acetate is separated, and the tail gas buffered in the first step tail gas buffer tank is pressurized to 3 times the standard atmosphere through a booster pump, and then transported to the resin adsorption tower with a constant working temperature of 30 ° C, and the air flow along the The axis of the resin adsorption tower passes through the resin adsorption tower from bottom to top, and after t...

Embodiment 2

[0025] Such as figure 1 Shown, a kind of high-efficiency ethyl acetate resin recovery process comprises the steps:

[0026] The first step is tail gas pretreatment. The tail gas containing ethyl acetate is firstly filtered and separated from solid pollutants, and then the separated tail gas is transported to the tail gas buffer tank, and the collected tail gas is irradiated through the tail gas buffer tank. Heating to keep the exhaust gas temperature constant at 60°C and the pressure in the exhaust buffer tank constant at 1.5 times the standard atmospheric pressure;

[0027] In the second step, ethyl acetate is separated, and the tail gas buffered in the first step tail gas buffer tank is pressurized to 15 times the standard atmosphere through a booster pump, and then transported to the resin adsorption tower with a constant working temperature of 60 ° C, and the air flow along the The axis of the resin adsorption tower passes through the resin adsorption tower from bottom to...

Embodiment 3

[0033] A kind of high-efficiency ethyl acetate resin recovery process, comprises the steps:

[0034] The first step is tail gas pretreatment. The tail gas containing ethyl acetate is firstly filtered and separated from solid pollutants, and then the separated tail gas is transported to the tail gas buffer tank, and the collected tail gas is irradiated through the tail gas buffer tank. Heating to keep the exhaust gas temperature constant at 50°C and the pressure in the exhaust buffer tank constant at 1.1 times the standard atmospheric pressure;

[0035] In the second step, ethyl acetate is separated, and the tail gas buffered in the first step tail gas buffer tank is pressurized to 8 times the standard atmosphere through a booster pump, and then transported to a resin adsorption tower with a constant working temperature of 40°C, and the airflow is made along the The axis of the resin adsorption tower passes through the resin adsorption tower from bottom to top, and after the et...

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Abstract

The invention discloses a high-efficiency recycling process of ethyl acetate resin. The process comprises three steps of tail gas pretreatment, ethyl acetate separation, ethyl acetate condensation andthe like. According to the method, working efficiency and precision of recovery operation of ethyl acetate in tail gas are greatly improved, and energy consumption of the recovery operation is reduced, so that waste and recovery cost of an ethyl acetate material in the tail gas are effectively reduced; and on the other hand, the recovery process is effectively simplified, so that cost and labor intensity of recovery operation of ethyl acetate in the tail gas are effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a high-efficiency ethyl acetate resin recovery process. Background technique [0002] At present, in the fields of biomedicine and other fields, ethyl acetate is often used to dehydrate and dry products. Since dehydration and double cone drying are often carried out in an environment with a vacuum greater than -0.8bar, although it can meet the The need for dehydration work, but it also leads to a large amount of ethyl acetate being taken away from the vacuum tail gas generated during the production process, which not only causes a waste of cost, but also is not conducive to environmentally friendly production. To solve this problem, the current method is mainly through traditional absorption. The tower and the corresponding absorption process realize the recovery of ethyl acetate in the tail gas. Although it can effectively meet the needs of the recovery and...

Claims

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Application Information

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IPC IPC(8): C07C67/48C07C69/14
Inventor 幸志伟张书汁占百涛李占涛张欣
Owner 焦作健康元生物制品有限公司
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