Production method of environmental friendly plasticizer DOTP and production system

An environmentally friendly plasticizer and production method technology, applied in chemical instruments and methods, preparation of organic compounds, separation/purification of carboxylic acid esters, etc. Cost saving, reducing equipment corrosion, improving the effect of the environment

Active Publication Date: 2015-12-09
SHANDONG CHENGWU YIXIN ENVIRONMENTAL TECH CO LTD
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing DOTP production equipment is relatively complicated, and must be dealcoholized in a dealcoholization kettle after the esterification is completed, the production efficiency is low, continuous production is not possible, and the investment is large, the product quality is not high, and the yield is low
Problems and shortcomings of the existing technology: coa

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
  • Production method of environmental friendly plasticizer DOTP and production system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment comprises the esterification dealcoholization still 2 that installs the first condenser 1, and the double-screw meter 4 that is connected octanol tank 3 is installed on the top of described esterification dealcoholization still 2, and the first condenser 1 is separated by alcohol water Device 5 connects buffer tank 6, and buffer tank 6 connects the still 8 that installs second condenser 7, and second condenser 7 connects decolorization kettle 10 by first recovery tank 9, and decolorization kettle 10 connects the deodorization that installs the 3rd condenser 11 Kettle 12, the third condenser 11 is connected to the second recovery tank 13 and the bottom of the deodorization kettle 12 is connected to the filter 14, and the filter 14 is connected to the finished product tank 15; the alcohol-water separator 5, the first recovery tank 9 and the second recovery tank 13 are connected...

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

No PUM Login to view more

Abstract

The invention relates to the technical field of plasticizer production, particularly to a production method of an environmental friendly plasticizer DOTP and a production system. The production method comprises the following steps: feeding a wet material into a twin-screw counter and adding octanol for mixing, then putting into an esterification reactor after preimpregnating, adding an alkaline solution for stirring and washing, controlling a PH value to be neutral, and heating up to evaporate the moisture; utilizing a vacuum effect to continuously add materials; adding a decolorizing agent to improve a decoloring effect; heating up under the vacuum effect, and adding siliceousearth and kaolin into a filter, and filtering to obtain the product. According to the production method, two major raw materials are charged by metering and matching; equipment corrosion is reduced by neutralized water washing; esterification and dealcoholization of the reactor are realized in one reactor; continuous production is realized; the continuous production of material transfer and material charge is realized under the vacuum effect; residues are recycled through processing equipment; the reclamation is realized; the cost is saved, and environment is improved.

Description

(1) Technical field [0001] The invention relates to the technical field of plasticizer production, in particular to a production method and production system of an environmentally friendly plasticizer DOTP. (2) Background technology [0002] Dioctyl terephthalate (DOTP for short) is a kind of plasticizer with excellent performance. It has good electrical and thermal properties. It has good speed-up effect and low volatility when used in cable materials. It is widely used in heat-resistant It is an ideal plasticizer for producing temperature-resistant 70°C cable materials and other eyeball-resistant volatilization-resistant PVC products. It has good cold resistance and is an excellent environmentally friendly plasticizer. [0003] The existing DOTP production equipment is relatively complicated, and must be dealcoholized in a dealcoholization kettle after the esterification is completed. The production efficiency is low, continuous production is not possible, and the investme...

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
IPC IPC(8): C07C67/08C07C67/48C07C67/54C07C69/82
CPCC07C67/08C07C67/48C07C67/54C07C69/82
Inventor 赵东方赵传令魏建设刘延彬董建胜
Owner SHANDONG CHENGWU YIXIN ENVIRONMENTAL TECH CO LTD
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