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Process for the hydrogenation of acetone

A technology of acetone and hydrogenation reaction, applied in organic chemistry methods, chemical instruments and methods, organic chemistry, etc., can solve problems such as economic decline, quantity increase, and reactor temperature controllability limitations

Inactive Publication Date: 2007-01-24
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the economy of the method of recycling the reaction product containing a large amount of isopropanol decreases, and the amount of a major by-product such as diisopropyl ether increases
In addition, the controllability of the temperature of the reactor itself is limited

Method used

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  • Process for the hydrogenation of acetone
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Experimental program
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Embodiment Construction

[0027] A multi-tubular reactor (101) is adopted, which consists of a substantially vertically extending vessel (103) and a plurality of reaction tubes (105) with open ends (for convenience, figure 1 Only four of them are drawn). The open-ended reaction tube (105) is arranged in the container parallel to the central longitudinal axis (107) of the container (103), and the upper end (109) of the open-ended reaction tube (105) is fixed on the upper tube plate (111 ), and is in fluid communication with the upper fluid chamber (113) above the upper tube plate (111), the lower end (115) of the open-ended reaction tube (105) is fixed on the lower tube plate (117), and In fluid communication with a lower fluid chamber (119) below said lower tube sheet (117). The container includes a feeding device (121) for feeding reactants into the upper fluid chamber (113), and a discharge port (123) at the bottom of the lower fluid chamber (119). The top of the open-end reaction tube (105) is equ...

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Abstract

Process for the hydrogenation of acetone to prepare isopropanol, wherein the hydrogenation reaction is carried out in a multi-tubular reactor.

Description

Technical field: [0001] The invention relates to a method for hydrogenating acetone into isopropanol. Background technique [0002] Acetone is a useful intermediate in organic synthesis and an important commercial solvent. [0003] Document EP-A-0379323 describes a process for preparing isopropanol by hydrogenation of acetone. The method for preparing isopropanol by the hydrogenation of acetone is an exothermic method. As pointed out in document EP-A-0379323, an excessively high reaction temperature will cause excessive hydrolysis of acetone, resulting in a decrease in the yield of isopropanol. Said problems are especially present when hydrogenating acetone. Compared with other ketones, acetone has a relatively low boiling point, so it is easy to vaporize. Excess vaporization can lead to hot spots and hydrolysis of acetone. Therefore, during the hydrogenation of acetone, it is especially necessary to precisely control the reaction temperature. A common method to contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/145C07C31/10C07B61/00C07CC07C29/14
CPCC07C29/145C07C31/10
Inventor 莱斯利·A·丘特尔威廉默斯·C·N·德克尔斯特凡·J·P·莱克里万安德鲁·N·罗杰斯
Owner SHELL INT RES MAATSCHAPPIJ BV