Method for preparing methyl tert-butyl ether and alkane liquefied gas by dehydrogenating isobutane

A technology of methyl tert-butyl ether and isobutane, which is applied in the field of dehydrogenation of isobutane to produce methyl tert-butyl ether and alkane liquefied gas, which can solve the problem of high operating pressure in hydroprocessing process and absorbent recovery treatment Difficulty, high equipment material requirements, etc., to achieve the effect of low cost, uniform load, and reliable technology

Inactive Publication Date: 2014-02-12
HEILONGJIANG ANRUIJIA PETROLEUM CHEM
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main advantages and disadvantages of this process are: simple and stable operation, long operation period; short process flow, low energy consumption, small floor space; high product yield, small material loss; good tolerance to raw materials, can be Withstand higher levels of impurities such as chlorine, nitrogen and sulfur in raw materials
Disadvantages: The operating pressure of the hydrogenation treatment process is high, and with the generation of acidic wastewater, acidic wastewater needs to be treated, and the requirements for equipment materials are relatively high
The main advantages and disadvantages of this process are: the advantages are low operating temperature and pressure, mild reaction conditions
The disadvantages are that due to many types of impurities, different selection of adsorbents and regeneration methods, the adsorption process is longer, the number of reactors is large, the energy consumption is high, the floor area is large, and the recovery and treatment of absorbents is difficult.

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
  • Method for preparing methyl tert-butyl ether and alkane liquefied gas by dehydrogenating isobutane
  • Method for preparing methyl tert-butyl ether and alkane liquefied gas by dehydrogenating isobutane
  • Method for preparing methyl tert-butyl ether and alkane liquefied gas by dehydrogenating isobutane

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] ⑵. Preparation of methyl tert-butyl ether: the butane-containing isobutene mixture produced by isobutane dehydrogenation is mixed with methanol at a ratio of 1.03:1, and then enters the etherification reactor for etherification reaction at a temperature of 50 ℃~60℃, the pressure is 1.0kgf / cm2, after the reaction, the product is transported to the catalytic rectification tower, and a part of methanol is supplemented in the rectification tower to generate the product methyl tert-butyl ether; the top of the catalytic rectification tower is extracted The post-ether C4 contains a small amount of reaction residual methanol and is sent to the methanol water washing tower for water washing, and the liquefied gas at the top of the washing tower is removed from the methanol to form ether, and the C4 is transported to the post-ether C4 hydrogenation unit;

[0022] ⑶. Hydrogenation of C4 after ether: heat exchange between C4 after ether and the hydrogenation product, after heat exch...

Embodiment

[0027] total material balance

[0028]

[0029] Material balance of isobutane dehydrogenation unit

[0030]

[0031] MTBE unit material balance sheet

[0032]

[0033] Material Balance Sheet of C4 Hydrotreating Unit after Ether

[0034]

[0035] PSA Unit Material Balance Sheet

[0036]

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 a method for preparing methyl tert-butyl ether and alkane liquefied gas by dehydrogenating isobutane, and belongs to a method for preparing the methyl tert-butyl ether through the isobutane. The method comprises the steps of isobutane dehydrogenation, methyl tert-butyl ether preparation, etherified C4 hydrofining and a PSA unit. The method disclosed by the invention has the advantages of low investment, low raw material unit consumption and reliability in technology through technical characteristics.

Description

technical field [0001] The invention belongs to a method for preparing methyl tert-butyl ether from isobutane, in particular to a method for preparing methyl tert-butyl ether and alkane liquefied gas by dehydrogenating isobutane. Background technique [0002] The preparation of methyl tert-butyl ether from isobutane mainly includes hydrogenation pretreatment method, adsorption pretreatment method and isobutane dehydrogenation method. [0003] Hydrogenation pretreatment technology is pre-hydrofining, which is to remove impurities such as sulfur, nitrogen, chlorine, oxygen, metals and olefins contained in dehydrogenation raw materials through hydrofining, in which sulfur, nitrogen, chlorine, and oxygen are hydrogenated converted to H 2 S, NH 3 , HCl and H 2 O is removed from the feedstock, olefins are converted to saturated alkanes by hydrogenation, metal organics are decomposed by hydrogenation, and finally metals are adsorbed on the surface of the catalyst to be removed f...

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 Applications(China)
IPC IPC(8): C07C41/06C07C43/04C10L3/12C01B3/26
CPCC07C5/03C07C41/06C10L3/12C07C43/046Y02P20/10
Inventor 赵文龙刘亚杰赵庆龙王亚晶刘仁波宋义阚维民李宗仁李显峰
Owner HEILONGJIANG ANRUIJIA PETROLEUM CHEM
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