dmac recycling physical index optimization system

A technology of index optimization and physical properties, applied in the field of spandex production, can solve the problems of cumbersome operation, high energy consumption, and low separation efficiency, and achieve the effects of fast refining, reduced recycling costs, and increased output

Active Publication Date: 2016-07-06
ZHEJIANG KAIPUTE SPANDEX
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The packing of the existing rectification system has defects such as low separation efficiency, high energy consumption, and cumbersome operation. In order to overcome the above-mentioned shortcomings of the rectification system, the present invention provides a DMAC recovery physical and chemical index optimization with high separation efficiency, convenient operation, and low energy consumption. system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • dmac recycling physical index optimization system
  • dmac recycling physical index optimization system
  • dmac recycling physical index optimization system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In this embodiment, the DMAC recycling physical index optimization system combines figure 1 , comprising a dehydration tower 1, a crude solvent tank 2, a refining tower 3, a still supply tank 4 and a recovery tower 5, the dehydration tower 1 is connected to a feed pipe 8, and the bottom of the dehydration tower 1 is connected to the middle part of the refining tower 3 through the crude solvent tank 2, The bottom of the refining tower 3 communicates with the bottom of the recovery tower 5 through the still supply tank 4; the middle part of the dehydration tower 1 is connected with a preheater 7, and the top is connected with a condenser-1a and a cryocooler-1b, and the condenser-1a is provided with a condenser Liquid receiving tank 1c, condensate receiving tank 1c communicates with dehydration tower 1 through return pipe 1d, cryocooler 1b bottom communicates with condensate receiving tank 1c, cryocooler 1b top is provided with vacuum pump 1e; refining tower 3 top Condense...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
heightaaaaaaaaaa
Login to view more

Abstract

The invention relates to a DMAC recycling physical property index optimization system, which belongs to the technical field of spandex production. Including dehydration tower, crude solvent tank, refining tower, distillation tank supply tank and recovery tower, the dehydration tower is connected to the feed pipe, the bottom of the dehydration tower is connected to the middle of the refining tower through the crude solvent tank, and the bottom of the refining tower is connected to the recovery tank through the distillation tank supply tank The bottom of the tower is connected; the middle part of the dehydration tower is connected to a preheater, and the top is connected to a condenser one and a cryocooler one; the top of the refining tower is connected to a condenser two and a cryocooler two; the top of the recovery tower is provided with a condenser three , the condenser three is provided with a condensate receiving tank three, and the top of the condenser three is provided with a vacuum pump three. Adopting the invention to recover DMAC in the spandex production process not only ensures the normal operation of the DMAC rectification system, but also greatly improves the yield and physical property index of the recovered DMAC.

Description

technical field [0001] The invention relates to a DMAC (N,N dimethylacetamide) recovery physical property index optimization system, through the technical transformation of the dehydration tower and the rectification tower of the DMAC rectification system, the optimized DMAC physical property index optimization is realized, and belongs to the technical field of spandex production . Background technique [0002] In the chemical production process, it is often necessary to separate raw materials, intermediate products or crude products to obtain chemical products or intermediate products that meet the process requirements. Common separation processes in chemical industry include distillation, absorption, extraction, drying, and crystallization, among which distillation is a typical unit operation for separating liquid mixtures and is the most widely used. The spandex dry spinning process needs to use a large amount of DMAC as a solvent for recycling. During the solvent dry sp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14C07C233/05C07C231/24
Inventor 王子成
Owner ZHEJIANG KAIPUTE SPANDEX
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap