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

Manufacturing method of formaldehyde, glycolaldehyde and glycol

A manufacturing method and glycolaldehyde technology, which are applied in chemical instruments and methods, preparation of organic compounds, preparation of carbon-based compounds, etc., can solve problems such as complex manufacturing steps and multiple steps, and achieve simplified manufacturing steps, reduced manufacturing costs, The effect of reducing manufacturing time

Inactive Publication Date: 2015-11-25
陈建安 +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this manufacturing method requires more steps, and the reaction gases of each step need to be placed in different reaction chambers for reaction, so the manufacturing steps are relatively complicated, and it still cannot compete with the method of using shale gas to produce ethylene glycol

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
  • Manufacturing method of formaldehyde, glycolaldehyde and glycol
  • Manufacturing method of formaldehyde, glycolaldehyde and glycol
  • Manufacturing method of formaldehyde, glycolaldehyde and glycol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present embodiment provides a kind of formaldehyde manufacture method, comprises in autoclave, the methyl alcohol of charging 20g, in diphenyl ether (Ph 2 In the presence of O) at a temperature of 80°C and a pressure of 2kg / cm 2 Under the condition of G, catalyze with rhodium (Rh) catalyst and ruthenium catalyst (Ru) as catalyst composition, make methanol react about 5 hours, and make formaldehyde, and simultaneously obtain hydrogen (H 2 ) and carbon monoxide (CO). In this embodiment, the ruthenium catalyst can use for example 0.02g of HRuCl (CO) (PPh 3 ) 3 , while the rhodium catalyst can use for example 0.02g of HRh(CO)(PPh 3 ) 3 . The reaction formula of the above-mentioned formaldehyde production method is shown below.

[0026] Full response:

[0027]

[0028] side effects:

[0029] CH 2 O→CO+H 2

[0030] After the reaction was completed, the content of the autoclave was measured, and the conversion rate of the reactant, the yield rate of the product...

Embodiment 2

[0040] This embodiment provides a method for producing glycolaldehyde, comprising charging 20 g of formaldehyde, preferably anhydrous formaldehyde, into a high-pressure reactor. In diphenyl ether (Ph 2 In the presence of O) at a temperature of 100°C and a pressure of 4kg / cm 2 Under the condition of G, the rhodium catalyst and the ruthenium catalyst are used as the catalyst composition for catalysis, and the formaldehyde (anhydrous) is reacted for about 5 hours to produce glycolaldehyde and carbon monoxide at the same time. In this embodiment, the ruthenium catalyst can use for example 0.02g of HRuCl (CO) (PPh 3 ) 3 , while the rhodium catalyst can use for example 0.02g of HRh(CO)(PPh 3 ) 3 . The reaction formula of the above-mentioned method for producing glycolaldehyde is shown below.

[0041] Full response:

[0042]

[0043] After the reaction was completed, the content of the autoclave was measured, and the conversion rate of the reactant, the yield rate of the pr...

Embodiment 3

[0051] This embodiment provides a method for producing ethylene glycol, comprising charging 20 g of glycolaldehyde and an appropriate amount of hydrogen into a high-pressure reactor. In diphenyl ether (Ph 2 In the presence of O) at a temperature of 120°C and a pressure of 20kg / cm 2 Under the condition of G, the rhodium (Rh) catalyst and the ruthenium catalyst (Ru) are used as the catalyst composition for catalysis, and the glycolaldehyde is hydrogenated for about 5 hours to obtain ethylene glycol. In this embodiment, the ruthenium catalyst can use for example 0.02g of HRuCl (CO) (PPh 3 ) 3 , while the rhodium catalyst can use for example 0.02g of HRh(CO)(PPh 3 ) 3 . The reaction formula of the method for preparing ethylene glycol by hydrogenating glycolaldehyde is as follows.

[0052] Full response:

[0053]

[0054] After the reaction was completed, the content of the autoclave was measured, and the conversion rate of the reactant, the yield rate of the product, and...

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 provides a manufacturing method of formaldehyde, glycolaldehyde and glycol. According to the manufacturing method of formaldehyde and glycolaldehyde, methanol is subjected to a reaction in the presence of a catalyst composition, so as to form formaldehyde and glycolaldehyde; and formaldehyde and glycolaldehyde are used as intermediate products to synthesize glycol. The catalyst composition contains a rhodium catalyst and a ruthenium catalyst, and the process of forming glycol by the reaction of methanol is carried out at the temperature of 50-150 DEG C and at the pressure of 0-40 kg / cm<2>G. The same catalyst composition is used by the manufacturing method of formaldehyde, glycolaldehyde and glycol. After the end of a reaction in the last manufacturing process, a reaction in the next manufacturing process can be carried out in a same high-pressure reactor. According to the manufacturing method of glycol, manufacturing processes can be simplified, manufacturing time can be minimized, and manufacturing costs of glycol can be reduced more sharply.

Description

technical field [0001] The present invention relates to a method for producing formaldehyde, glycolaldehyde and ethylene glycol, in particular to a method for preparing formaldehyde, glycolaldehyde and ethylene glycol by using methanol. Background technique [0002] Ethylene glycol is a simple glycol, a colorless, odorless, sweet liquid that can be mixed with water in any proportion. It is used as a solvent and a raw material for synthetic polyester resins, etc., or used to make antifreeze and thawing agents for automobiles, aircraft and ships, and is also used for hydraulic brakes and ink pads, ballpoint pens, and inks for printing shops. [0003] In recent years, due to the improvement of shale gas development technology, a method of using ethylene in shale gas to produce ethylene glycol has been proposed, which mainly includes the following steps: obtaining ethylene from shale gas; using silver (Ag) The catalyst catalyzes the reaction of ethylene and oxygen to form ethyl...

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): C07C47/055C07C47/19C07C45/29C07C45/75C07C31/20C07C29/14C07C29/141C07C29/34C07C27/04
Inventor 陈建安陈怡文
Owner 陈建安
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