2 results about "Aldehyde synthesis" patented technology

The application provides a propionaldehyde synthesis system and method, which comprises the following steps: 1) a raw material system comprising ethylene, carbon monoxide and hydrogen is reacted to obtain a gas phase product comprising propionaldehyde; 2) after the gas phase product is subjected to cooling treatment, a propionaldehyde liquid phase crude product and residual gas phase raw material are obtained, and the cooling treatment comprises internal cooling medium treatment and first external cooling medium treatment in sequence; 3) the propionaldehyde liquid phase crude product is subjected to stripping treatment by using synthesis gas raw material to obtain propionaldehyde and synthesis gas raw material after stripping; wherein the residual gas phase raw material and / or the synthesis gas raw material after stripping participates in the internal cooling medium treatment as an internal cooling medium. The propionaldehyde synthesis method can reduce the amount of first external cooling medium refrigeration water by subjecting the gas phase product to internal cooling medium treatment, thereby reducing energy consumption and production cost.

The application discloses an olefin hydroformylation aldehyde synthesis production device and process, comprising the following steps: (1) the raw material enters the bubble reactor of the reaction section of the reaction extraction rectifying tower and mixes with the catalyst, and carbon monoxide and hydrogen are introduced to carry out the hydroformylation reaction under high pressure; (2) the reaction product is overflowed to the rectifying section to carry out separation; (3) the alkanes byproduct and the olefin raw material with similar boiling points are separated through the eccentric rotating disc extraction tower of the extraction section of the reaction extraction rectifying tower; (4) the light components on the tower top are separated through the rectifying section; (5) the heavy components in the tower kettle are separated through the dividing wall column, and the aldehyde product is obtained through purification. The application adopts a new type of ionic liquid catalyst, separates the olefin and the alkane in the reaction extraction rectifying tower, improves the raw material utilization rate, simultaneously reduces the waste of the catalyst and the discharge of the raw material waste liquid, and increases the reaction conversion rate and the yield.