Apparatus For The Hydroformylation Of Olefins

a technology of hydroformylation apparatus and olefin, which is applied in the direction of lighting and heating apparatus, indirect heat exchanger, organic chemistry, etc., can solve the problems of limited improvement of hydroformylation efficiency by the above methods, and it is difficult to obtain desirable aldehyde products using a single reactor, so as to achieve high yield and improve hydroformylation efficiency

Inactive Publication Date: 2011-06-09
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach significantly enhances hydroformylation efficiency, allowing for the production of aldehydes with high yield and improved reaction conditions, surpassing the limitations of traditional methods by facilitating efficient gas-liquid contact and catalyst recirculation.

Problems solved by technology

In addition, in U.S. Pat. No. 5,763,678, disclosed is a hydroformylation process in a series of loop-type reactors which functions as a continuous stirred tank reactor, However, there are limitations in the improvement of the hydroformylation efficiency by the above methods, and it is hard to obtain desirable aldehyde products using a single reactor.

Method used

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  • Apparatus For The Hydroformylation Of Olefins
  • Apparatus For The Hydroformylation Of Olefins

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050]As shown in FIG. 1, a venturi-loop reactor having a capacity of 3 liters was manufactured and installed. Instead of an external heat exchanger, the internal temperature of the reactor was maintained by flowing heat transfer oil in a jacket. The venturi-loop reactor was equipped with a nozzle having a diameter of 1.7 mm, and the expansion tube had a diameter of 8.0 mm and a length of 200 mm. 48 g of triphenylphosphine (TPP) and 0.8 g (by weight) of rhodium (triphenylphosphine)acetylacetonatecarbonyl (ROPAC) were dissolved in 800 g of refined n-butylaldehyde to prepare a n-butylaldehyde catalyst solution. The prepared catalyst solution was injected into the reactor, and the circulating pump was operated to slowly circulate the catalyst solution at a rate of 2 liter per minute. The entire system was purged with the refined nitrogen gas through the nozzle at the top portion of the reactor three times. While maintaining the external circulating pump at a rate of 2 liter per minute,...

example 2

[0051]The experiment was performed in the same manners as in Example 1, except that the circulating rate of the circulating pump was reduced to 1.0 liter per minute. After 2 hrs, the total weight of the obtained catalyst solution and products was found to be 1,225 g, and thus the weight of the resulting butylaldehyde was found to be 420 g. During reaction, the maximum consumption rate of the synthesis gas was found to be 4.1 liter per minute.

example 3

[0052]The experiment was performed in the same manners as in Example 1, except that the diameter of the nozzle installed in the venturi-loop reactor was changed to 4mm. After 2 hrs, the total weight of the obtained catalyst solution and products was found to be 1,240 g, and thus the weight of the resulting butylaldehyde was found to be 440 g. During reaction, the maximum consumption rate of the synthesis gas was found to be 4.6 liter per minute.

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Abstract

The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.

Description

TECHNICAL FIELD[0001]The present invention relates to a process for the preparation of aldehydes by hydroformylation of olefins and an apparatus therefore. This application claims priority from Korea Patent Application No. 10-2007-0051868 filed on May 29, 2007 in the KIPO, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND ART[0002]The hydroformylation or oxo process is known as a method for the production of saturated aldehydes from olefins, carbon monoxide, and hydrogen in the presence of a catalyst, in which the method involves addition of one hydrogen atom and one formyl group (—CHO) onto a C═C bond. Generally, these aldehydes are subjected to condensation, followed by hydrogenation to give the corresponding alcohols with the longer chain.[0003]The hydroformylation can be exemplified by the preparation of octanol (2-ethylhexanol) from propylene using a rhodium catalyst.[0004]Octanol is mainly used as a raw material for obtaining plasticizers f...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B01J10/00
CPCC07C45/50B01J10/00B01J4/002B01J2219/0011B01J19/2465C07C47/02Y02P20/582C07B61/00C07C45/78
InventorHONG, MOO-HOKO, DONG-HYUNNA, SANG-OEBEOM, SUNG-SHIKLEE, SANG-GIKWON, O-HARKKIM, DAE-CHULCHOI, JAE-HUI
OwnerLG CHEM LTD