Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing propionic aldehyde from ethylene in refinery dry gas

A refinery dry gas, ethylene technology, applied in the direction of carbon monoxide reaction preparation, organic chemistry, etc., can solve the problem of failure to provide, and achieve the effects of small equipment investment, simple process and low energy consumption

Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] None of the above-mentioned homogeneous reaction patents provides a method for simultaneously utilizing ethylene and hydrogen contained in refinery dry gas, and directly carrying out hydroformylation reaction to prepare propionaldehyde without changing the gas raw material concentration

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 propionic aldehyde from ethylene in refinery dry gas
  • Method for preparing propionic aldehyde from ethylene in refinery dry gas
  • Method for preparing propionic aldehyde from ethylene in refinery dry gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the first step, the refinery dry gas with a pressure of 0.7Mpa is increased to 2.3Mpa through a compression system to form a high-pressure refinery dry gas.

[0034]In the second step, the refinery dry gas containing 12.5% ​​(molar content) of ethylene, 26% (molar content) of hydrogen, and methane, ethane, nitrogen, a small amount of propane, propylene, carbon dioxide, etc. is controlled by a flow meter at a rate of 5000ml / min. The flow rate passes through the purification device, and the refinery dry gas contains 10ppm carbonyl iron, 150ppm hydrogen sulfide, 70ppm oxygen, 3000ppm acetylene and 3000ppm water. The purification unit consists of five fixed-bed reactors connected in series, and each fixed-bed reactor can control the temperature independently. They are carbonyl iron purification tower, hydrogen sulfide purification tower, oxygen purification tower, acetylene purification tower and water purification tower. The carbonyl iron purification tower is equipped...

Embodiment 2

[0038] In the first step, the refinery dry gas with a pressure of 0.7Mpa is increased to 1.5Mpa through a compression system to form a high-pressure refinery dry gas.

[0039] In the second step, the refinery dry gas containing 12.5% ​​(molar content) of ethylene, 26% (molar content) of hydrogen, and methane, ethane, nitrogen, a small amount of propane, propylene, carbon dioxide, etc. is controlled by a flow meter at a rate of 4000ml / min. The flow rate passes through the purification device, and the refinery dry gas contains 10ppm carbonyl iron, 150ppm hydrogen sulfide, 70ppm oxygen, 3000ppm acetylene and 3000ppm water. The purification unit consists of five fixed-bed reactors connected in series, and each fixed-bed reactor can control the temperature independently. They are carbonyl iron purification tower, hydrogen sulfide purification tower, oxygen purification tower, acetylene purification tower and water purification tower. The carbonyl iron purification tower is equippe...

Embodiment 3

[0043] In the first step, the refinery dry gas with a pressure of 0.7Mpa is increased to 1.8Mpa through a compression system to form a high-pressure refinery dry gas.

[0044] In the second step, the refinery dry gas containing 10.5% (molar content) of ethylene, 23% (molar content) of hydrogen, and methane, ethane, nitrogen, a small amount of propane, propylene, carbon dioxide, etc. is controlled by a flow meter at a rate of 5000ml / min. The flow rate passes through the purification device, and the dry gas of the refinery contains 20ppm carbonyl iron, 120ppm hydrogen sulfide, 50ppm oxygen, 3100ppm acetylene, and 3500ppm water. The purification unit consists of five fixed-bed reactors connected in series, and each fixed-bed reactor can control the temperature independently. They are carbonyl iron purification tower, hydrogen sulfide purification tower, oxygen purification tower, acetylene purification tower and water purification tower. The carbonyl iron purification tower is e...

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 a method for preparing propionic aldehyde from ethylene in refinery dry gas so as to provide a technology for directly preparing propionic aldehyde from low-concentration ethylene in refinery dry gas. The method comprises the following steps: pressurizing raw dry gas in a pressurization system; feeding the obtained high-pressure dry gas into a purification system, and removing impurities; mixing the purified refinery dry gas and carbon monoxide containing no catalyst poison to form raw gas for hydroformylation reaction; carrying out hydroformylation reaction together with additional carbon monoxide under the action of a catalyst and a catalyst ligand; and discharging in a gas phase manner, and passing through a separation system, thus obtaining the propionic aldehyde product.

Description

technical field [0001] The invention relates to a method for utilizing ethylene in refinery dry gas, in particular to a method for directly utilizing ethylene and hydrogen in refinery dry gas to react with carbon monoxide to prepare propionaldehyde. Background technique [0002] Refinery dry gas mainly comes from secondary processing of crude oil, such as catalytic cracking, thermal cracking, delayed coking, etc. Among them, catalytic cracking has the largest amount of dry gas and the highest yield. Refinery dry gas contains 10-20% ethylene, 20-40% hydrogen, nitrogen, methane, ethane and a small amount of carbon monoxide, carbon dioxide, propane, propylene, etc. [0003] The use of refinery dry gas as raw material for ethylene plants in foreign refineries has been industrialized as early as the 1980s. The structure and layout of domestic oil refining and chemical enterprises are very different from those of foreign countries. First of all, the scale of domestic oil refinin...

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): C07C47/02C07C45/50
Inventor 王世亮吕顺丰黄凤兴李彤刘博秦燕璜
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com