Supercharge Your Innovation With Domain-Expert AI Agents!

Starting-up preheating device for phenol methylation reaction

A technology of phenol methyl and preheating device, which is applied in the direction of feeding device, chemical industry, bulk chemical production, etc., can solve the problems of heat waste of reactants and poor economic benefits, and achieve improved utilization rate, small airflow resistance, The effect of good economic benefits

Active Publication Date: 2022-05-24
ANHUI HAIHUA CHEM
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when m-cresol is produced by the phenol alkylation method, the mixed phenol, xylene, protective gas hydrogen and methanol reactant gas are heated by a gasification heating heater, mainly by means of electric heating. The reactant is heated, and the reaction is an exothermic reaction, the heat of the reactant is wasted, and the economic benefit is poor

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
  • Starting-up preheating device for phenol methylation reaction
  • Starting-up preheating device for phenol methylation reaction
  • Starting-up preheating device for phenol methylation reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to Figure 1-5, a kind of startup preheating device for phenol methylation reaction, including startup heater 1, molten salt heater 2, reactor 3 and reaction heater 4, and the top reactant outlet of reaction heater 4 is connected with a first The material conduit 24, the end of the first material conduit 24 away from the reaction heater 4 is divided into a first branch conduit 25 and a second branch conduit 26, the first branch conduit 25 away from the first material conduit 24 and the top of the heater 1 The material inlet is connected, and a second material conduit 27 is connected between the bottom end material outlet of the heater 1 and the top material inlet of the reactor 3, and the second branch conduit 26 is away from one end of the first material conduit 24 and the top of the reactor 3. The feed port is connected, the bottom discharge port of the reactor 3 is communicated with the heat exchange channel of the reaction heater 4, the heat medium inlet and o...

Embodiment 2

[0036] refer to Figure 1-5 , the difference between this embodiment and Embodiment 1 is that the molten salt heater 2 includes a molten salt tank 9 and a molten salt pressurizer 22, an electric heater 10 is installed on the molten salt tank 9, and the top of the molten salt tank 9 is fixedly connected with a The molten salt return pipe 11 and the molten salt tank 9 are fixedly connected with a first molten salt discharge pipe 13 at one side close to the molten salt pressurizer 22 and close to the bottom end. The molten salt inlet of the salt pressurizer 22 is communicated, and the second molten salt discharge pipe 6 is installed on the side of the molten salt pressurizer 22 away from the molten salt tank 9, and the molten salt supplementary pipe 12 is also installed on the molten salt tank 9, The molten salt replenishing pipe 12 adds the heat medium into the molten salt tank 9, heats it to a molten state by the electric heater 10, and then introduces the heat medium in the mo...

Embodiment 3

[0038] refer to figure 2 , 3 , 9 and 10, the difference between this embodiment and Embodiment 1 is that the reaction heater 4 is a shell-and-tube heat exchanger, and the reaction heater 4 includes a shell 44, and both ends of the shell 44 are fixedly connected with a head 35, A material inlet pipe 36 and a material discharge pipe 45 are fixedly connected to the two heads 35 respectively, and a tube plate 42 is fixedly connected to the shell 44 near the top and bottom ends, and a heat exchange is fixedly connected between the two tube plates 42. The tube bundle 37, the two ends of the heat exchange tube bundle 37 are respectively connected with the inside of the two heads 35, and the two sides of the casing 44 are fixedly connected with a heat medium inlet pipe 40 and a heat medium discharge pipe 41 at the position near the top end and the position near the bottom end, respectively. Random packing 43 is added to the heat exchange tube bundle 37, the gaseous high temperature ...

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 phenol methylation, and discloses a start-up preheating device for phenol methylation reaction, which comprises a start-up heater, a fused salt heater, a reactor and a reaction heater, the end, away from the reaction heater, of the first material guide pipe is divided into a first branch guide pipe and a second branch guide pipe. The end, away from the first material guide pipe, of the first branch guide pipe is connected with a top end material inlet of the starting heater. The device is reasonable in design, heat released by reaction can be fully utilized through the design of the driving heater and the reaction heater, a gaseous high-temperature reaction product flows into a heat exchange channel of the reaction heater to heat a reactant which enters subsequently, and only before the reaction, the reaction is finished. And reactants are introduced into the driving heater to be heated for a period of time, so that more energy is saved, and better economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of phenol methylation, in particular to a startup preheating device for phenol methylation reaction. Background technique [0002] m-Cresol is also known as 3-methylphenol. Colorless or pale yellow liquid. There is a phenol odor. Melting point 11.5 ℃. Boiling point 202.2 ℃. Density 1.0336g / cm3 (20 ℃). Refractive index 1.5282. Slightly soluble in water. Soluble in hot water, caustic lye and ethanol, ether, acetone, benzene, carbon tetrachloride, etc. Can volatilize with water vapor. Substitution reactions such as halogenation, nitration, sulfonation, and alkylation can occur on the benzene ring. Oxidation, hydrogenation, etherification and other reactions can be carried out. Biodegradable. It can be extracted from phenolic oil. [0003] At present, when m-cresol is produced by the phenol alkylation method, the mixed reactant gas of phenol, xylene, protective gas hydrogen and methanol is heated by ...

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): B01J19/00B01J4/00
CPCB01J19/0006B01J19/0013B01J4/001B01J4/008B01J2204/007B01J2204/002Y02P20/52
Inventor 张其忠杨品肖曹齐张贵欧加思吴祥站吴居田陈星宇吴健辉
Owner ANHUI HAIHUA CHEM
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com