Effects of sweating time and cooling strategy on purification of N-vinyl-2-pyrrolidinone using a melt crystallizer

Sun Hyung Kim; Myoung Do Seo; Moon Seon Tak; Woo Sik Kim; Dae Ryuk Yang; Jeong Won Kang

doi:10.1007/s11814-013-0158-9

Effects of sweating time and cooling strategy on purification of N-vinyl-2-pyrrolidinone using a melt crystallizer

Sun Hyung Kim, Myoung Do Seo, Moon Seon Tak, Woo Sik Kim, Dae Ryuk Yang, Jeong Won Kang

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A melt crystallization process is proposed to produce high-purity n-vinyl-2-pyrrolidinone (NVP). To produce high purity products, operation strategy plays key role in the melt crystallizer. We investigated the cooling strategy and optimal sweating time using a batch-type melt crystallizer. A slow cooling followed by a slow heating was found to be an effective temperature profile to produce high purity of NVP. The optimal sweating time was found to be about 20 minutes. For industrial application, a cascade melt crystallizer which consists of four stages was constructed and the proposed crystallization/sweating scheme was applied. Using the new melt crystallizer, NVP more than 99.99% purity can be produced in semi-continuous mode.

Original language	English
Pages (from-to)	1997-2000
Number of pages	4
Journal	Korean Journal of Chemical Engineering
Volume	30
Issue number	11
DOIs	https://doi.org/10.1007/s11814-013-0158-9
Publication status	Published - 2013 Nov

Keywords

Cascade Melt Crystallizer
Cooling Strategy
Melt Crystallization
N-vinyl-2-pyrrolidinone
Sweating

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1007/s11814-013-0158-9

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title = "Effects of sweating time and cooling strategy on purification of N-vinyl-2-pyrrolidinone using a melt crystallizer",

abstract = "A melt crystallization process is proposed to produce high-purity n-vinyl-2-pyrrolidinone (NVP). To produce high purity products, operation strategy plays key role in the melt crystallizer. We investigated the cooling strategy and optimal sweating time using a batch-type melt crystallizer. A slow cooling followed by a slow heating was found to be an effective temperature profile to produce high purity of NVP. The optimal sweating time was found to be about 20 minutes. For industrial application, a cascade melt crystallizer which consists of four stages was constructed and the proposed crystallization/sweating scheme was applied. Using the new melt crystallizer, NVP more than 99.99% purity can be produced in semi-continuous mode.",

keywords = "Cascade Melt Crystallizer, Cooling Strategy, Melt Crystallization, N-vinyl-2-pyrrolidinone, Sweating",

author = "Kim, {Sun Hyung} and Seo, {Myoung Do} and Tak, {Moon Seon} and Kim, {Woo Sik} and Yang, {Dae Ryuk} and Kang, {Jeong Won}",

note = "Funding Information: This work is supported by the Human Resources Development Program (No. 20114010203050) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy. This research also has been performed by Nuclear Hydrogen Production Technology Development and Demonstration (NHDD) Project. The authors also appreciate financial support from Korea University.",

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doi = "10.1007/s11814-013-0158-9",

language = "English",

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AU - Kim, Sun Hyung

AU - Seo, Myoung Do

AU - Tak, Moon Seon

AU - Kim, Woo Sik

AU - Yang, Dae Ryuk

AU - Kang, Jeong Won

N1 - Funding Information: This work is supported by the Human Resources Development Program (No. 20114010203050) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy. This research also has been performed by Nuclear Hydrogen Production Technology Development and Demonstration (NHDD) Project. The authors also appreciate financial support from Korea University.

PY - 2013/11

Y1 - 2013/11

N2 - A melt crystallization process is proposed to produce high-purity n-vinyl-2-pyrrolidinone (NVP). To produce high purity products, operation strategy plays key role in the melt crystallizer. We investigated the cooling strategy and optimal sweating time using a batch-type melt crystallizer. A slow cooling followed by a slow heating was found to be an effective temperature profile to produce high purity of NVP. The optimal sweating time was found to be about 20 minutes. For industrial application, a cascade melt crystallizer which consists of four stages was constructed and the proposed crystallization/sweating scheme was applied. Using the new melt crystallizer, NVP more than 99.99% purity can be produced in semi-continuous mode.

AB - A melt crystallization process is proposed to produce high-purity n-vinyl-2-pyrrolidinone (NVP). To produce high purity products, operation strategy plays key role in the melt crystallizer. We investigated the cooling strategy and optimal sweating time using a batch-type melt crystallizer. A slow cooling followed by a slow heating was found to be an effective temperature profile to produce high purity of NVP. The optimal sweating time was found to be about 20 minutes. For industrial application, a cascade melt crystallizer which consists of four stages was constructed and the proposed crystallization/sweating scheme was applied. Using the new melt crystallizer, NVP more than 99.99% purity can be produced in semi-continuous mode.

KW - Cascade Melt Crystallizer

KW - Cooling Strategy

KW - Melt Crystallization

KW - N-vinyl-2-pyrrolidinone

KW - Sweating

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DO - 10.1007/s11814-013-0158-9

M3 - Article

AN - SCOPUS:84887454031

SN - 0256-1115

VL - 30

SP - 1997

EP - 2000

JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

IS - 11

ER -

Effects of sweating time and cooling strategy on purification of N-vinyl-2-pyrrolidinone using a melt crystallizer

Abstract

Keywords

ASJC Scopus subject areas

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