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Highly-efficient, energy-saving and environmentally-friendly continuous production process for ultra-clean high-purity nitrogen methyl pyrrolidone

A nitrogen-methylpyrrolidone, high-efficiency and energy-saving technology, which is applied in the field of microelectronic chemical reagent production, can solve the problem of low purity of ultra-clean and high-purity nitrogen-methylpyrrolidone, and achieve the effects of mild reaction conditions, simple process operation, and increased yield

Pending Publication Date: 2020-05-12
江苏中德电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the embodiment of the present invention provides an ultra-clean and high-purity nitrogen methyl pyrrolidone continuous production process with high efficiency, energy saving and environmental protection, so as to solve the problem of low purity of ultra-clean and high-purity nitrogen methyl pyrrolidone in the prior art

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  • Highly-efficient, energy-saving and environmentally-friendly continuous production process for ultra-clean high-purity nitrogen methyl pyrrolidone
  • Highly-efficient, energy-saving and environmentally-friendly continuous production process for ultra-clean high-purity nitrogen methyl pyrrolidone
  • Highly-efficient, energy-saving and environmentally-friendly continuous production process for ultra-clean high-purity nitrogen methyl pyrrolidone

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Embodiment 1

[0030] This embodiment provides a high-efficiency, energy-saving and environmentally-friendly continuous production process of ultra-clean and high-purity nitrogen methyl pyrrolidone, which includes a one-time use of industrial grade nitrogen methyl pyrrolidone in an overall reaction environment with a temperature of 86-91°C and a pressure of 0.1 atm Add to the distillation kettle, the liquid in the distillation kettle is heated to boiling and then transferred to the condenser for condensation, the condensate part flows into the top of the tower, when the liquid in the distillation kettle drops to the preset value, the distillation kettle liquid is discharged to the condenser at one time In the process, the nitrogen methyl pyrrolidone is obtained after condensation, and then enters through the bottom of the molecular sieve adsorption tower, is dehydrated by the molecular sieve adsorption tower, flows out from the top of the tower, and is filtered by ion resin exchange to obtain t...

Embodiment 2

[0032] This embodiment provides a high-efficiency, energy-saving and environmentally friendly continuous production process of ultra-clean and high-purity nitrogen methyl pyrrolidone, which includes putting industrial grade nitrogen methyl pyrrolidone raw materials in an overall reaction environment with a temperature of 86-91°C and a pressure of 0.1 atm Rectification in the rectification tower produces nitrogen methyl pyrrolidone vapor, which is then transferred to the condenser, and after condensation to produce nitrogen methyl pyrrolidone, then enters through the bottom of the molecular sieve adsorption tower, and flows out from the top of the tower after being dehydrated by the molecular sieve adsorption tower , After ion resin exchange and filtration, the ultra-clean high-purity nitrogen methyl pyrrolidone is prepared.

Embodiment 3

[0034] This embodiment provides a high-efficiency, energy-saving and environmentally-friendly continuous production process for ultra-clean and high-purity nitrogen methyl pyrrolidone, which includes a one-time use of industrial grade nitrogen methyl pyrrolidone in an overall reaction environment with a temperature of 91-96°C and a pressure of 0.1 atm Add to the distillation kettle, the liquid in the distillation kettle is heated to boiling and then transferred to the condenser for condensation, the condensate part flows into the top of the tower, when the liquid in the distillation kettle drops to the preset value, the distillation kettle liquid is discharged to the condenser at one time In the process, the nitrogen methyl pyrrolidone is obtained after condensation, and then enters through the bottom of the molecular sieve adsorption tower, is dehydrated by the molecular sieve adsorption tower, flows out from the top of the tower, and is filtered by ion resin exchange to obtain ...

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Abstract

The embodiments of the invention disclose a highly-efficient, energy-saving and environmentally-friendly continuous production process for ultra-clean high-purity nitrogen methyl pyrrolidone. The process comprises the following steps: rectifying a nitrogen methyl pyrrolidone raw material so as to prepare nitrogen methyl pyrrolidone steam, then carrying out condensing so as to prepare nitrogen methyl pyrrolidone, allowing the nitrogen methyl pyrrolidone to enter from the bottom part of a molecular sieve adsorption tower, carrying out dehydrating through the molecular sieve adsorption tower, allowing dehydrated nitrogen methyl pyrrolidone to flow out from the top part of the molecular sieve adsorption tower, and carrying out exchanging and filtering by ion resin so as to prepare the ultra-clean high-purity nitrogen methyl pyrrolidone. According to the highly-efficient, energy-saving and environmentally-friendly continuous production process for the ultra-clean high-purity nitrogen methylpyrrolidone, the ultra-clean high-purity nitrogen methyl pyrrolidone is prepared through rectification treatment, condensation, impurity removal and filtration; the problem of low purity of the ultra-clean high-purity nitrogen methyl pyrrolidone in the prior art can be effectively solved; in addition, the nitrogen methyl pyrrolidone raw material is added into a distillation still for treatment byadopting a rectification method disclosed by the invention, so impurities can be further removed, and the yield is improved.

Description

Technical field [0001] The invention relates to the field of microelectronic chemical reagent production, in particular to an ultra-clean and high-purity nitrogen methyl pyrrolidone high-efficiency, energy-saving and environmentally-friendly continuous production process. Background technique [0002] N-Methylpyrrolidone, also known as NMP in Chinese, is a colorless transparent oily liquid with a slight amine odor. It can be miscible with water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, aromatic hydrocarbons and castor oil. It has low volatility, good thermal and chemical stability, and can evaporate with water vapor. It is hygroscopic and sensitive to light. Among them, ultra-high purity N-methylpyrrolidone (NMP) is a common solvent in the electronics industry, and the quality of N-methylpyrrolidone directly affects the production and quality of high-end electronic products. [0003] At present, the large-scale production of electronic grade N-methylpyrrolidone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/267
CPCC07D207/267
Inventor 戈士勇何珂
Owner 江苏中德电子材料科技有限公司