Title:
PREPARATION METHOD FOR CARBON 10 HEAVY AROMATIC LOW NAPHTHALENE AROMATIC SOLVENT HAVING DISTILLATION RANGE OF 175-205°C
Document Type and Number:
WIPO Patent Application WO/2020/051886
Kind Code:
A1
Abstract:
A preparation method for a carbon 10 heavy aromatic low naphthalene aromatic solvent having a distillation a range of 175-205°C, comprising the following steps: a raw material of a carbon 10 heavy aromatic is fed into two stages of reduced pressure rectification devices that are connected in sequence, a product having a distillation range of 175-205°C is collected from the top of a second-stage rectification column by means of a rectification method, then the product is sequentially fed into a crystallization device bearing a mother liquid circulation mechanism and a liquid-solid separation device and is crystallized, and a mother liquid is collected, i.e., a carbon 10 heavy aromatic low naphthalene aromatic solvent having a distillation range of 175-205°C, which is also referred to as S-150, wherein a crystal is naphthalene and the crystallization temperature is -5 to -26°C.
Inventors:
CHEN ZHONGPING (CN)
XU FEI (CN)
WANG CHANGQING (CN)
TANG ZHENG (CN)
FENG JIANPING (CN)
PAN XUELIN (CN)
XU FEI (CN)
WANG CHANGQING (CN)
TANG ZHENG (CN)
FENG JIANPING (CN)
PAN XUELIN (CN)
Application Number:
PCT/CN2018/105753
Publication Date:
March 19, 2020
Filing Date:
September 14, 2018
Export Citation:
Assignee:
JIANGSU HUALUN CHEMICAL CO LTD (CN)
International Classes:
C07C15/02; C07C7/04; C07C7/14; C07C15/24
Foreign References:
| CN107815164A | 2018-03-20 | |||
| CN207445633U | 2018-06-05 | |||
| CN107779218A | 2018-03-09 | |||
| CN101318874A | 2008-12-10 | |||
| CN1120035A | 1996-04-10 |
Attorney, Agent or Firm:
BEIJING LIAN & LIEN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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