KR20010092049A - Refining apparatus and its process for removing impurities of waste organic solvent by boiling with third material - Google Patents

Abstract

PURPOSE: A distillatory apparatus for refining waste organic solvents is provided to separate impurities from waste organic solvent with increased efficiency. CONSTITUTION: The distillatory apparatus comprises a feeding pump(6) supplying raw materials into a service tank(5); a column into which raw materials from the service tank is introduced by gravitational force; a reboiler(1) which is installed in the lower bottom of the column to supply steam thereto; 1st cooler(3), 2nd cooler(4) and condensers(11,11) which are respectively installed in the upper part of the column; a distillation tower(100) on the inside of which two radiators(8,10), five flow sheets(9), and vacuum pump(12) are equipped. This apparatus is characterized in that an inlet port(101) is installed at a certain position to infuse a specific amount of water or other substance intermittently or periodically into the service tank so that impurities being carried along flow can be isolated.

Description

REFINING APPARATUS AND ITS PROCESS FOR REMOVING IMPURITIES OF WASTE ORGANIC SOLVENT BY BOILING WITH THIRD MATERIAL}

The present invention is a water or a third material to carry impurities azeotropically to the material to be commercialized according to the azeotropic ratio (따라 比 率) according to the physical properties when performing the multi-stage distillation The present invention relates to a refining apparatus and method for azeotropically removing impurities in a waste organic solvent to be separated and removed with a third material.

As is well known, organic solvents are liquid compounds such as organic alcohols and acetone used to dissolve or dilute test reagents, raw materials, and electronic reagents.化合物 質).

As such, organic solvents can be prepared in the distillation method to recycle waste organic solvents used in dissolving or diluting other chemicals and to recycle them. Boil and purify simple distillation method (單純 烝 溜 方法) and multi-stage distillation method (多 段 烝 溜 方法) is used.

However, the simple distillation method is a method of commercializing the steam generated by boiling the organic solvent once and condensing or cooling the product, and the multi-stage distillation method is to boil the organic solvent to a multi-stage distillation facility and send the steam to each stage. After boiling again at that stage, the boiled material is sent to the lower part in a liquid state at a high temperature, and the boiled material is lowered to the next upper part in a vapor state to boil the boiled material at a lower temperature. The process passes through all the stages step by step to recirculate some of the boiled material at low temperature (reintroduce the liquid condensed material at the top of the column) to ensure the separation of impurities. Some are ways of becoming product.

However, the latter multi-stage distillation method is mainly used to remove impurities contained in the organic solvent, a liquid compound in which two or more substances are mixed, but this method also does not completely remove impurities dissolved in the organic solvent. There were many cases.

In particular, the quality of organic solvents, which are designated wastes, is much more difficult to improve. Therefore, the environmental pollution caused by the disposal of large amounts of organic wastes is intensifying. Moreover, businesses that use organic solvents even when incinerated There are many difficulties due to the rise in manufacturing cost and proper disposal of waste organic solvents.

In the present invention, in order to solve the above problems, water or a third material is added to an arbitrary part of the multi-stage distillation apparatus to remove the azeotrope that is followed by the azeotrope as impurities, so that the quality of the organic solvent can be purified with high purity. For that purpose.

In order to achieve the above object, the present invention provides an intermediate product by azeotropically combining water or a third material introduced through the inlet installed at the site of the service tank of the multi-stage distillation unit or any other site with water to make an intermediate product. It is characterized in that the purification apparatus and method for removing azeotropes in the waste organic solvent with the third material by azeotropically removing the water together with the impurities to the lower end of the distillation apparatus.

1 is an overall processing process diagram for practicing the present invention.

※ Explanation of symbols about main part of drawing ※

1-reboiler 2-column 3,4-first and second condenser

5-service tank 6-fitting pump 7-separator

8,10-Cooler 11,11-Capacitor 9-Polo Sheet

12-vacuum pump 100-distillation tower 101-inlet

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The accompanying drawings are, as a whole process flow chart for carrying out the present invention and a feeding pump (6) for transferring the raw material to the service tank (Sevice Tank) (5); A column 2 which is naturally dropped from the service tank 5 and is introduced; A reboiler (1) capable of applying steam from the lower part of the column (2) is installed therein, and the upper part of the column (2) has a first condenser (1ST cooler) 3 and a second condenser (2nd cooler). (4) and condenser (11) (11) and cooler (8) (10) in the distillation column (100) has five polo sheets (Flow sheet) to observe the flow of the waste organic solvent (9), separator (7) and vacuum pump (12).

The present invention is installed in the service tank (5) of the distillation column 100 is installed in this way or any portion of the water inlet or any other material to the third material can be installed to azeotroped with impurities It is a structure that can be removed.

That is, the inlet 101 can be purified with high purity by adding water or a third material which is easy to be removed in the next process or by azeotropically removing impurities by changing to a boiling state at a high temperature. In this process, water or a third substance is selected and used in consideration of the characteristics of the substance to be obtained and the substance to be removed and the substance to be removed. Considering the properties and conditions of azeotropy, in some cases, it can be experimented and used in advance by an experimental method, and the quality level of the product is manufactured by adjusting the conditions according to the required standard.

On the other hand, the present invention requires a multi-stage distillation apparatus in the case of a simple distillation apparatus to remove the residue by repeating once or twice, but since it is not reliably separated, depending on the material to be separated This is because the height and the number of stages (approximately 60 stages) can be configured differently so that the separation can be facilitated in the case of ordinary liquid compounds.

<Example>

If there is an unknown high boiling point substance in the waste organic solvent, i.e. methylene chloride compound, which is to be regenerated, water or a third substance is introduced into the inlet 101, and the unknown high boiling point substance is dissolved in water. The lower portion of the distillation column 100 is driven, and the methylene chromide boiled at 40.3 ° C. is azeotropic with 1.5% of water, and the boiling point is lowered to 38.5 ° C., thereby driving the upper part of the distillation unit.

At this time, when the methylene chloride, which is azeotropic with water and boiled at 38.5 ° C., is cooled, water is not mixed with methylene chloride and precipitated (출 出) and its specific gravity is relatively low. When water is not used, it is not removed azeotropically with methylene chloride.

The present invention is not limited to a material such as methylene chromide according to the above embodiment, and can be widely applied to remove impurities contained in waste organic solvents so that they can be reused in test research reagents, raw material drugs, and electronic reagent standards. Of course.

As described above, in the present invention, when the impurities contained in the waste organic solvent are purified by a multi-stage distillation apparatus, water or a third substance which is followed by azeotropically to the material which is impregnated with impurities according to the physical properties according to the physical properties is added. By simplifying the removal of impurities that are difficult to separate, it maximizes the value of waste organic solvents and enhances the quality of the organic solvents.

Claims (2)

A fitting pump 6 for transferring raw materials to the service tank 5; A column 2 which is naturally dropped from the service tank 5 and is introduced; A reboiler 1 capable of applying steam in the lower part of the column 2 is installed therein, and the upper part of the column 2 has a first condenser 3, a second condenser 4, and a condenser 11, 11. ); And in a distillation column 100 and any type of distillation system having a cooler 8, 10 and having five flow sheets 9, a separator 7 and a vacuum pump 12. Impurities in the waste organic solvent comprising an inlet 101 through which water or a third substance can be introduced into a part or any part of the service tank 5 installed in the distillation facility. Refiner to remove azeotropically. Through the inlet 101 installed at the service tank 5 part of the distillation column 100 or at an arbitrary part, the required amount of water and the third material are continuously or intermittently adjusted to control impurities based on the azeotropy ratio. A method for purifying azeotropic impurities in a waste organic solvent with a third substance, characterized in that it can remove the azeotropic agent to a material to be commercialized.