Method for producing liquefied petroleum gas

A technology of liquefied petroleum gas and manufacturing method, applied in the petroleum industry, hydrocarbon production from carbon oxides, gas fuel, etc.

Inactive Publication Date: 2006-03-22
TOKAI
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the selectivity of propane (C3) and butane (C4) produced by this method is on...

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 producing liquefied petroleum gas
  • Method for producing liquefied petroleum gas
  • Method for producing liquefied petroleum gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0216] use figure 1 The LPG manufacturing apparatus shown manufactures LPG. As a catalyst for olefin-containing gas synthesis, a dry standard 73.5% by weight of H-ZSM-5 with a Si / Al ratio (atomic ratio) of 25.0, and a dry standard 26.5% by weight of alumina bonded A catalyst obtained by mixing a mixture (manufactured by Catalyst Chemicals Industry Co., Ltd., Kataroid AP), wet molding, drying and firing. As the catalyst for the hydrogenation of the olefin-containing gas, a 2.0% by weight Pt / C catalyst (manufactured by N.E. CHEMCAT Co., Ltd.) was used. Both the catalyst for the synthesis of olefin-containing gas and the catalyst for hydrogenation of olefin-containing gas used the same 1 / 32-inch cylindrical extruded product.

[0217] Make the raw material gas that is composed of methanol 50% (mol) and hydrogen 50% (mol) pass through the front stage (50% of the reactor volume) as the first catalyst layer composed of the above-mentioned olefin-containing gas synthesis catalyst, a...

Embodiment 2

[0220] use figure 2 The LPG manufacturing apparatus shown manufactures LPG. As the catalyst for synthesizing olefin-containing gas, the same catalyst for synthesizing olefin-containing gas as in Example 1, and a catalyst in which 0.2% by weight of Pt was carried on the same catalyst for synthesizing olefin-containing gas as in Example 1 (hereinafter referred to as Catalysts for the isomerization and hydrogenation of olefin-containing gases). In addition, as the catalyst for hydrogenating olefin-containing gas, the same catalyst for hydrogenating olefin-containing gas as in Example 1 was used. In addition, the catalyst for isomerization and hydrogenation of olefin-containing gas is a catalyst for synthesis of olefin-containing gas having the function of a catalyst for hydrogenation of olefin gas.

[0221] Make the raw material gas of the same composition as in Example 1, the part that passes volume 2 / 3 from the reactor inlet is the above-mentioned olefin-containing gas synth...

Embodiment 3

[0225] use image 3 The LPG manufacturing apparatus shown manufactures LPG. As the catalyst for synthesizing olefin-containing gas, the same catalyst for synthesizing olefin-containing gas as in Example 1 was used. As the catalyst for hydrogenation of olefin-containing gas, the same catalyst for hydrogenation of olefin-containing gas as in Example 1, and the same catalyst for isomerization and hydrogenation of olefin-containing gas as in Example 2 were used.

[0226] A raw material gas having a composition of 50% by mole of methanol and 50% by mole of water vapor was passed through the first catalyst layer composed of the above-mentioned catalyst for synthesizing olefin-containing gas. The conditions of the reaction are: reaction temperature: reactor inlet control temperature 330°C, maximum temperature of the catalyst layer 365°C; reaction pressure: methanol partial pressure 70kPa, relative to the catalyst in the first catalyst layer, the methanol liquid space-hour velocity i...

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

A liquefied petroleum gas containing propane or butane as a main component is produced by passing a raw material gas comprising hydrogen and at least one selected from the group consisting of methanol and dimethyl ether through a catalyst layer comprising, in the direction of flowing of the raw material gas, a former catalyst layer comprising a catalyst for synthesizing an olefin-containing gas which is used when producing an olefin-containing gas from at least one selected from the group consisting of methanol and dimethyl ether, and a latter catalyst layer comprising a catalyst for hydrogenating an olefin-containing gas which is used when an olefin is hydrogenated to produce a paraffin.

Description

technical field [0001] The present invention relates to a method for producing liquefied petroleum gas whose main component is propane or butane from at least one of methanol and dimethyl ether. Background technique [0002] Liquefied Petroleum Gas (LPG) refers to petroleum-based or natural-gas-based hydrocarbons that are gaseous at normal temperature and pressure, and are compressed or cooled at the same time to form a liquid substance, and its main component is propane or butane. LPG, which can be stored and transported in a liquid state, is easy to transport, and unlike natural gas, which requires a pipeline when supplied, it can be supplied to any place in the form of a high-pressure gas storage cylinder. For this reason, LPG having propane as a main component, ie, propane gas, is widely used as a fuel for domestic and commercial use. Currently, propane gas is supplied to approximately 25 million households (more than 50% of all households) in Japan. In addition, LPG i...

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): C10L3/12C07C9/08C07C9/10C07C1/04
Inventor 浅冈佐知夫黎晓红藤元薰朝见贤二
Owner TOKAI
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