Efficient catalytic treatment device for phthalic anhydride tail gas

A treatment device and tail gas technology, which are applied in gas treatment, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of low purification rate of fumaric acid process, high cost of three waste treatment, environmental damage, etc., and achieve reasonable structure and protection. Environmental and energy saving effect

Pending Publication Date: 2019-12-03
ZHEJIANG GREAT CHEM SCI & TECH
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, to provide a kind of phthalic anhydride tail gas catalytic high-efficiency treatment device, which aims to solve the problem of containing a small amount of phthalic anhydride, maleic anhydr

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
  • Efficient catalytic treatment device for phthalic anhydride tail gas
  • Efficient catalytic treatment device for phthalic anhydride tail gas
  • Efficient catalytic treatment device for phthalic anhydride tail gas

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described here are only used to explain the present invention, and are not used to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0021] Refer to figure 1 , figure 2 with image 3 The embodiment of the present invention provides a phthalic anhydride tail gas catalytic high-efficiency treatment device, which is characterized in that it includes a pipeline 1, a preheater 2, a heat exchanger 3, a heater 4, a reaction furnace 5, a waste heat recovery furnace 6, and a chimney 7. The heat exchanger 3 includes a purified gas inl...

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 discloses an efficient catalytic treatment device for phthalic anhydride tail gas. The device comprises a pipeline, a preheater, a heat exchanger, a heater, a reaction furnace, a waste heat recovery furnace and a chimney. The device is reasonable in structure, volatile hazardous substances in the tail gas are converted into water and carbon dioxide through a series of catalytic reactions, due to presence of a purified gas inlet of the heat exchanger, the preheater and the heater can be closed after the reactions are performed a period of time, the reactions are promoted by heat produced by the reactions, any extra energy is not required, soft water is converted into water steam by use of hot gas in the waste heat recovery furnace, heat is further utilized, high-temperature water steam can be used for treating secondary heating of the treatment device and can also be used for heat supply to other production lines, no open fire is produced in the reaction process, safe distance requirements are not required, no wastewater or waste residues are produced in the technological process, the operation temperature is low, operation is reliable, energy is saved, the environmentis protected, and the operation efficiency of a factory is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of special equipment for chemical waste gas treatment, in particular to a catalytic and efficient treatment device for phthalic anhydride tail gas. 【Background technique】 [0002] Phthalic anhydride, also known as phthalic anhydride, phthalic anhydride C8H4O3, is a cyclic anhydride formed by intramolecular dehydration of phthalic acid. As an important organic chemical raw material, phthalic anhydride is mainly used in the production of plastic plasticizers, alkyd resins, Dyestuffs, unsaturated resins, and some pharmaceuticals and pesticides. Phthalic anhydride tail gas contains a small amount of phthalic anhydride, maleic anhydride, benzoic acid and trace amounts of unconverted organic compounds and CO. If discharged directly, it will cause serious damage to the environment. Traditional tail gas scrubbing absorbs by-products The purification rate of the fumaric acid process is low, and the process of recyc...

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): B01D53/86B01D53/72B01D53/62
CPCB01D53/864B01D53/8668B01D2257/502B01D2257/70
Inventor 范义益赵保廷聂传洋曹小灵吴春峰张晓斌
Owner ZHEJIANG GREAT CHEM SCI & TECH
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