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Method for preparing high-purity isopropanol

A production method, the technology of isopropanol, which is applied in the production field of high-purity isopropanol, can solve problems such as large energy consumption, environmental pollution, and complexity, and achieve the effects of shortening the production cycle, controlling the degree of pollution, and improving safety

Active Publication Date: 2011-11-23
无锡东风新能源科技有限公司
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Problems solved by technology

[0002] The existing method for producing isopropanol comprises the following process steps, and a series of steps such as rectification, ultrafiltration, and ion exchange resin are purified. create pollution

Method used

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  • Method for preparing high-purity isopropanol

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Embodiment Construction

[0014] Combine below figure 1 To further explain the present invention:

[0015] ⑴. Put the set amount of isopropanol raw material into the raw material tank, and add an appropriate amount of disodium edetate, stir and mix well;

[0016] (2) Dehydrate the materials processed in step (1) with 4A molecular sieve; then filter through 800 mesh double-layer nylon cloth to remove the molecular sieve fine particles;

[0017] ⑶. Use a 5 micron polypropylene filter element to remove the remaining fines in the isopropanol from the material processed in step (2).

[0018] Small mechanical impurities, then pass through the granular activated carbon filter to remove very small organic impurities, then use a 1 micron polypropylene filter to remove the very small suspended solids, and finally use a 0.0001 micron reverse osmosis membrane to remove metal ion impurities;

[0019] ⑹ 、Sampling and analysis the materials after step ⑶

[0020] ⑺. Finished products are put into storage.

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Abstract

The invention provides a novel method for preparing high-purity isopropanol. According to the method provided by the invention, energy consumption can be greatly reduced while guaranteeing the purity of the isopropanol and the pollution on the environment is small. The method for preparing the high-purity isopropanol comprises the following steps of: (1) adding set amount of isopropanol raw material into a raw material pot and adding appropriate amount of special metal complexing agent, agitating and uniformly mixing; (2) then dehydrating the material which is treated in the step (1) by utilizing a 4-angstrom molecular sieve (a common adsorbent); (3) removing residual fine mechanical impurities in the isopropanol by utilizing a 5-micron polypropylene filtering core, removing micro organic impurities through utilizing a granular active carbon filtering core, then removing micro suspended materials through utilizing a 1-micron polypropylene filtering core and finally, removing metal ion impurities by utilizing a 0.0001-micron reverse osmosis membrane; (4) sampling and analyzing the material which is treated by the step (3); and (5) putting the finished products into a storage.

Description

Technical field [0001] The invention relates to the technical field of processing chemical raw materials, in particular to a production method of high-purity isopropanol. Background technique [0002] The existing method for producing isopropanol includes the following process steps: rectification, ultrafiltration, ion exchange resin and other series of steps for purification. This process is not only complicated, but also requires a lot of energy consumption during the rectification process, and it also affects the environment. create pollution. Summary of the invention [0003] In view of the above-mentioned problems, the present invention provides a new production method of high-purity isopropanol, which can greatly reduce energy consumption while ensuring the purity of isopropanol, and causes little environmental pollution. [0004] The technical solution is as follows, which is characterized in that it includes the following steps: [0005] ⑴. Put the set amount of isopropanol ...

Claims

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Application Information

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IPC IPC(8): C07C31/10C07C29/74
Inventor 王明
Owner 无锡东风新能源科技有限公司
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