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Method for preparing furfuryl alcohol by furfural medium-pressure continuous liquid phase hydrogenation and hydrogenation reactor thereof

A hydrogenation reactor and hydrogen preparation technology, applied in the direction of organic chemistry, etc., can solve the problems of difficult removal of reaction heat and easy occurrence of danger, and achieve the effects of easy control of reaction temperature, saving steam, and increased reaction capacity

Inactive Publication Date: 2012-05-09
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a production method for producing furfuryl alcohol by continuous hydrogenation of furfural in medium-pressure liquid phase, to solve the problem that the heat of reaction in the reactor is difficult to remove and prone to danger, increase the reaction capacity of the reactor with the same volume, and improve the efficiency of the equipment. Utilization efficiency, and can also save the preheated steam required to raise the reaction mass to the initial reaction temperature

Method used

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  • Method for preparing furfuryl alcohol by furfural medium-pressure continuous liquid phase hydrogenation and hydrogenation reactor thereof
  • Method for preparing furfuryl alcohol by furfural medium-pressure continuous liquid phase hydrogenation and hydrogenation reactor thereof
  • Method for preparing furfuryl alcohol by furfural medium-pressure continuous liquid phase hydrogenation and hydrogenation reactor thereof

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Embodiment 1

[0037] use image 3 In the process and equipment shown, after furfural and catalyst are mixed evenly, the metering pump enters the preheater together with the hydrogen compressed by the compressor for preheating, and then enters 1# and 2# reactors for hydrogenation reaction, and the reacted materials After cooling in the cooler, it enters the separator for separation. The semi-finished furfuryl alcohol is separated from most of the catalyst in the crude alcohol precipitation tank, and then sent to the refining tower for distillation and refining to obtain the finished furfuryl alcohol.

[0038] Raw furfural purity: content ≥ 98.5% by mass, moisture ≤ 0.1% by mass, acidity ≤ 0.01mol / l; hydrogen purity: content ≥ 99% by volume, oxygen content < 0.1% by volume.

[0039] The specification of 1#, 2# reactor is: internal diameter 132mm, effective length 4.5m; 1# reactor is the present invention (as figure 2 ) of the reactor.

[0040] The inner tube is a seam welded tube with a di...

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Abstract

The invention relates to a method for preparing furfuryl alcohol from furfural by hydrogenation and a hydrogenation reactor used by the method. The method for preparing furfuryl alcohol of the invention is a method for preparing furfuryl alcohol from furfural by medium-pressure liquid phase continuous hydrogenation, wherein, the reaction for preparing the furfuryl alcohol from furfural by hydrogenation is carried out in one or a plurality of plug-flow reactors; the method includes the steps as follows: an internal spile is added in the at least one plug-flow reactor to the bottom of the reactor so as to lead the furfural, hydrogen and a catalyst to be fed into the bottom of the reactor from the upper part along the internal spile and then discharged from the upper part after the reaction in the reactor, thereby obtaining the furfuryl alcohol. The method of the invention has the advantages that the reaction is easy to be controlled and steam is saved.

Description

technical field [0001] The invention relates to the field of furfuryl alcohol preparation, in particular to a method for preparing furfuryl alcohol by medium-pressure liquid-phase continuous hydrogenation of furfural and a hydrogenation reactor thereof. Background technique [0002] Furfuryl alcohol is an important chemical raw material. The furan resin produced by it is widely used in foundry, automobile and other industries. Furfuryl alcohol is also used in medicine, pesticides, coatings and other fields. According to domestic and foreign literature reports, the production process of furfuryl alcohol is classified from raw materials, and mainly contains the following: (1) furfural route; (2) ethanol, aluminum reduction route; (3) sodium borohydride reduction route; Classification by aspect: (1) normal pressure or low pressure (0.1-1MPa), (2) medium pressure (1-10MPa), (3) high pressure (>10MPa); classification by furfural phase: (1) liquid phase; ( 2) Gas phase. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/44
Inventor 栗昭争赵新华柴龙德尹树万柴本玉刘献波江成真
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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