Method and device system for purifying and recycling waste alcohol in high-carbon alcohol production

A technology of high-carbon alcohol and purification liquid, which is applied in the direction of separation methods, chemical instruments and methods, and the preparation of organic compounds, etc., to achieve the effects of increasing production, reducing emissions, and simple structure

Pending Publication Date: 2022-01-14
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the waste liquid obtained after separating high-carbon alcohols by this method still contains more products, which cannot be recycled.

Method used

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  • Method and device system for purifying and recycling waste alcohol in high-carbon alcohol production
  • Method and device system for purifying and recycling waste alcohol in high-carbon alcohol production
  • Method and device system for purifying and recycling waste alcohol in high-carbon alcohol production

Examples

Experimental program
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Effect test

Embodiment 1

[0081] This embodiment provides a device system for a high carbonol purification reuse, such as figure 1 As shown, the device system includes a first rectification column 6, a second distillation column 5, and a hydrogenation unit, and a tower top discharge port of the first distillation column 6 connects a hydrogenation unit; the second fine The tower of the distillation column 5 is attached to the hydrogenation unit; the hydrogenation unit includes a first hydrogenation reactor 1, a third distillation column 2, a second hydrogenation reactor 3, which is sequentially connected in sequentially connected to the reaction feedstock. The fourth distillation column 4; the tower of the third rectification column 2 is connected to the feed port of the first distillation column 6; the top of the tower of the fourth distillation column 4 and the first The feed port of the dilutta 5; the top discharge port of the first distillation column 6 and the column discharge port of the second distil...

Embodiment 2

[0087] This embodiment provides a device system for a high carbonol purification reuse, such as figure 2 As shown, the device system includes a first rectification column 6, a second distillation column 5, and a hydrogenation unit, and a tower top discharge port of the first distillation column 6 connects a hydrogenation unit; the second fine The tower of the distillation column 5 is attached to the hydrogenation unit; the hydrogenation unit includes a first hydrogenation reactor 1, a third distillation column 2, a second hydrogenation reactor 3, which is sequentially connected in sequentially connected to the reaction feedstock. The fourth distillation column 4; the tower of the third rectification column 2 is connected to the feed port of the first distillation column 6; the top of the tower of the fourth distillation column 4 and the first The feed port of the secondary distillation column 5 is connected; the top of the first distillation column 6 and the tower of the second di...

Embodiment 3

[0093] This embodiment provides a method of performing high carbonol purification reuse using the device system provided in Example 1, the method comprising the steps of:

[0094] (1) The first mixture of 6000 kg / h of C10 aldehyde primary hydrogenated separation was pure in 7 kPa (underscore), 170 ° C, and the temperature of the colored condenser was 60 ° C to obtain a carbon atom. The number of organic matter having a 2-pH carbon atom is purified, and in the first mixture, 72% of the alcohol (including 50% 2-pH, 11.4) is included in the mass content. % 2-propyl heptenol, 6% C13 alcohol and 4.6% C15 alcohol), 2% 2-propyl hepthaldehyde and 26% ketones (including 11% C10 ketone, 6% C13 Ketone and 9% C15 ketone), wherein the content of 2-pH is 50%;

[0095] (2) The second mixture after the secondary hydrogenation separation is pure at 7 kPa (absolute pressure), 160 ° C. The temperature of the colored condenser is 60 ° C to obtain a carbon atom and 2-pH carbon. The second component ...

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Abstract

The invention relates to a method and a device system for purifying and recycling waste alcohol in high-carbon alcohol production, wherein the method comprises the steps: respectively carrying out rectification purification on a first mixture after primary hydrogenation separation and a second mixture after secondary hydrogenation separation under specific conditions, and carrying out hydrogenation on a purified solution obtained by rectification purification to obtain high-carbon alcohol. According to the device system, only two rectification purification towers are additionally arranged on the basis of an original high-carbon alcohol production system; and the method provided by the invention can realize purification and recycling of waste alcohol, reduces discharge of high-carbon alcohol waste liquid, and has the advantages of yield increase and efficiency improvement.

Description

Technical field [0001] The present invention relates to the field of high carbonol production, and more particularly to a method and apparatus system for purification in high carbonol production. Background technique [0002] High-alcohol refers to a monohydric alcohol containing the number of carbon atoms, commonly used in fine chemical products such as synthetic surfactants, plasticizers and detergents, and is widely used in petrochemical, mechanical mining, architectural metallurgy, paper and paper. Food and other fields. Among them, 2-propyl alcohol (2-pH) is one of the important representatives of high carbonols. At present, dodiphenylene (DOP) plasticizers are gradually subjected to o-phenylenedic acid di (2-propyl) ester (DPHP) due to safety problems, and 2-pH of the main synthetic raw material of DPHP has broad Market prospect. [0003] At present, the main synthetic method of high carbon alcohol has carbonyl synthesis method, Ziguele method and a naphylene oxidation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/141C07C29/80C07C31/125B01D3/00
CPCC07C29/141C07C29/80B01D3/009C07C31/125
Inventor 吴桐郭雷曲顺利王芳贺同强王江涛杨璐赵彩云鹿晓斌
Owner CHINA NAT OFFSHORE OIL CORP
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