Alkene hydroformylation flow reactor

Abstract

The invention relates to a continuous reactor for olefin hydroformylation, which consists of a gas-liquid distribution section A at the upper part, a mass transfer reaction section B at the middle part, and a gas-liquid distribution section C at the lower part. The gas-liquid distribution section A at the upper part is provided with an inlet pipe of mixed gases consisting of hydrogen and carbon monoxide and an inlet pipe of catalyst solution; the mass transfer reaction section B at the middle part is a key part of the reactor, is cylindrical, and is filled with hydrophilic fibrous membrane consisting of metal fiber the diameter of which is 0.01 to 0.2 millimeter; a cylinder of the mass transfer reaction section B extends into the gas-liquid distribution section C, while the fibrous membrane consisting of the metal fiber extends to the bottom of the gas-liquid distribution section C; and the side wall of the gas-liquid distribution section C is provided with a reaction residual gas outlet 3 and an outlet 4 of reaction product liquid aldehyde, and the bottom of the gas-liquid distribution section C is provided with a catalyst solution outlet 7 which is connected with a circulating pump through a pipeline to make catalyst solution flow circularly. The reactor has the advantages of high reaction efficiency, no back mixing, low production cost and durability.

Description

technical field [0001] The invention relates to an industrial reactor for hydroformylation reaction of olefins, carbon monoxide and hydrogen under the action of a catalyst to generate corresponding aldehydes in the field of petrochemical industry. technical background [0002] Hydroformylation reaction of alkenes with carbon monoxide and hydrogen under the action of a catalyst [0003] [0004] Aldehydes can be hydrogenated to produce corresponding alcohols. The production capacity of synthesizing alcohol by this method is in the millions of tons in the world. Hydroformylation reaction of ethylene or propylene with carbon monoxide and hydrogen under the action of rhodium carbonyl catalyst to generate propionaldehyde or butyraldehyde, and further hydrogenation to generate propanol or butanol is one of the important chemical processes. [0005] The hydroformylation reactors currently used in industrial production, whether they are tank-type stirred reactors or tower react...

AI Technical Summary

Problems solved by technology

For a stirred tank reactor, although the input of mixing energy can make the bubbles thinner, thereby increasing the mass transfer interface, it also makes it difficult to separate the gas-liquid and liquid-liquid of the reaction product, and at a relatively high pressure ( If the reaction pressure is 2.2MPa), it is not an easy task to solve the dynamic sealing of the mixing equipment. It costs a lot, and its high cost often makes the cost of other parts of the equipment negligible, which greatly increases investment cost

Moreover, the dynamic seal under high pressure is easily damaged and has a short service life, which makes the maintenance cost of the production process very high, and often affects the normal production

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