Production system of electronic grade isopropanol

An electronic-grade isopropanol and production system technology, which is applied in the preparation of circuits, electrical components, organic compounds, etc., can solve the problems of cumbersome process steps, low content of metal ions in isopropanol purity, and high energy consumption of equipment, and achieves purification. High efficiency, good directional adsorption, good coating effect

Pending Publication Date: 2020-08-11
浙江建业微电子材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of cumbersome process steps and high equipment energy consumption in the isopropanol preparation process of the prior art, provide a production system for electronic grade isopropanol, and prepare a manufacturing system with high impurity adsorption efficiency. The preparation process of isopropanol adopts a one-step dehydration method, adopts a modified adsorption material with magnetic orientation adsorption capacity and super large specific surface energy, and finally obtains electronic grade isopropanol with high purity of isopropanol and low content of metal ions, and Excellent and stable electronic grade isopropanol is prepared, and the production process is simple and efficient

Method used

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  • Production system of electronic grade isopropanol
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Examples

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Embodiment 1

[0043] A production system for electronic-grade isopropanol, comprising a raw material delivery unit 1, a molecular sieve adsorption unit 2, an evaporation tank 3, a first rectification unit 4, a second rectification unit 5 and a filter unit 6, and the above-mentioned devices are connected in sequence , the molecular sieve adsorption unit 2 is provided with a modified adsorption material, the first rectification unit 4 is provided with a first rectification packing area 4.1, and the second rectification unit 5 is provided with a second rectification unit between the inlet and the outlet. In the second rectification packing area 5.1, the raw material conveying unit 1 is also provided with a feed port A, and the filter unit 6 is also provided with a discharge port B. The outside of the second rectification unit 5 is provided with a circulation unit 7, one end of the circulation unit 7 is connected to the bottom of the second rectification unit 5, and the other end is connected to...

Embodiment 2

[0053] The difference with Example 1 is that the modified adsorption material is permanent magnetic hydroxypropyl chitosan modified activated carbon, and its preparation method comprises:

[0054] (1) Activation of activated carbon: add activated carbon to 55°C deionized water and ultrasonically 0.6h, then put activated carbon into nitric acid solution with a mass content of 11% to activate for 22min, wash with deionized water and set aside;

[0055] (2) Preparation of magnetic hydroxypropyl chitosan gel: hydroxypropyl chitosan is placed in a container, acetic acid with a mass fraction of 4.5% is added, heated in a water bath at 32° C. for 32 minutes, while the speed of rotation is 860 rpm for mechanical stirring, and then to the above-mentioned Add 3,5-dimethyl-2-pyrrole carboxaldehyde into the solution, and at the same time, the temperature rises to 66°C at 2.5°C / min, and stir at 1300rpm at constant temperature for 6.2h, then add Fe to the solution 3 o 4 - Rare earth magnet...

Embodiment 3

[0062] The difference with Example 1 is that the modified adsorption material is permanent magnetic hydroxypropyl chitosan modified activated carbon, and its preparation method comprises:

[0063] (1) Activation of activated carbon: add activated carbon to deionized water at 65°C and sonicate for 0.8h, then put activated carbon into a nitric acid solution with a mass content of 13% to activate for 25min, wash with deionized water and set aside;

[0064] (2) Preparation of magnetic hydroxypropyl chitosan gel: hydroxypropyl chitosan is placed in a container, acetic acid with a mass fraction of 5% is added, heated in a water bath at 35°C for 35min, while the rotating speed is 880rpm mechanical stirring, and then to the above-mentioned Add 3,5-dimethyl-2-pyrrole carboxaldehyde into the solution, and at the same time, the temperature rises to 68°C at 3°C / min, and stirs at a constant temperature of 1350rpm for 6.5h, and then adds Fe to the solution 3 o 4 - Rare earth magnet nanopar...

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Abstract

The invention relates to the technical field of manufacturing of electronic-grade isopropanol. Aiming at solving the problem that the process steps of the isopropanol preparation process are tedious,the invention discloses a production system of electronic grade isopropanol. The production system comprises a raw material conveying unit, a molecular sieve adsorption unit, an evaporation tank, a first rectification unit, a second rectification unit and a filtering unit, which are sequentially connected. A modified adsorption material is arranged in the molecular sieve adsorption unit, a first rectification filler area is arranged in the first rectification unit, a second rectification filler area is arranged between an inlet and an outlet in the inner side of the second rectification unit,the raw material conveying unit is further provided with a feed port A, and the filtering unit is further provided with a discharge port B. One-step dehydration is adopted in the preparation process,the modified adsorption material with magnetic directional adsorption capacity and ultra-large specific surface energy is adopted, electronic-grade isopropanol with high isopropanol purity and low metal ion content is finally obtained, the electronic-grade isopropanol with excellent stability is prepared, and the production process is simple and efficient.

Description

technical field [0001] The invention relates to the technical field of manufacturing electronic-grade isopropanol, in particular to a production system for electronic-grade isopropanol. Background technique [0002] Isopropanol is an organic compound, an isomer of n-propanol, also known as dimethylmethanol, 2-propanol, and also known as IPA in the industry. Isopropanol is an important chemical product and raw material. Mainly used in pharmaceuticals, cosmetics, plastics, spices, paints, etc., a variety of isopropanol purification processes have been reported at home and abroad, the purification methods mainly include: including: decolorization, adsorption, rectification, or decolorization, adsorption, rectification phase Combined with other steps, the disadvantages of these purification methods are that the product purity is not high, does not meet the requirements of scientific research, or the yield is not high, and the cost is too high. Therefore, need a kind of isoprop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/74C07C29/76C07C29/80C07C31/10B01J20/24B01J20/20B01J20/28B01J20/30H01F1/055
CPCC07C29/74C07C29/76C07C29/80B01J20/24B01J20/20B01J20/28009B01J20/3085H01F1/0557C07C31/10
Inventor 冯烈许京伟陈云斌刘尚文孙斌孙琪
Owner 浙江建业微电子材料有限公司
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