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System and method for preparing propylene from isopropanol

A technology for dehydration of isopropanol and isopropanol, which is applied in the field of propylene, can solve problems such as unusable, and achieve the effects of high recovery rate, high purity of propylene, and simple process

Pending Publication Date: 2021-10-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods cannot be used for isopropanol to propylene

Method used

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  • System and method for preparing propylene from isopropanol
  • System and method for preparing propylene from isopropanol

Examples

Experimental program
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Effect test

Embodiment 1

[0108] like figure 1 As shown, a system of propylene propylene is propylene. Including: isopropanol dewatering reactor 2, water washing tower 4, base wash tower 10, degaussing tower 16, propylene column 19; isopropanol dewatering reactor 2 is connected to the water washing tower 4, the top of the water washing tower 4 is connected to the compressor 8 Connect the base washing tower 10, the base of the base wash tower 10 is connected to the compressor B14, and the deprinted column 16 is connected, the propylene column 19 is attached to the bottom of the tower 16.

[0109] Methods include:

[0110] Isopropyl alcohol 1 enters isopropanol dehydration reactor 2, the reaction operating temperature is 220 ° C, and the pressure is 0.03 MpAg. Isopropanol dehydration to form propylene and other small by-products;

[0111] The reaction product 3 enters the bottom of the water washing tower 4, and the water 5 is inserted from the top of the tower, and the water, aldehyde, etc. are removed from...

Embodiment 2

[0124] like figure 2 As shown, a system of propylene propylene is propylene. Including: isopropanol dewatering reactor 2, water washing tower 4, base wash tower 10, rehabilitating tower 18, propylene column 19; isopropanol dewatering reactor 2 bottom connection water washing tower 4, water washing tower 4 connected to compressor 8 The base wash tower 10 is connected, the base wash tower 10 is connected to the compressor B14 after connecting the reinforced tower 18, and the top of the reward tower 18 is attached to the propylene column 19.

[0125] Methods include:

[0126] Isopropyl alcohol 1 into the isopropyl alcohol dehydration reactor 2, the reaction operating temperature is 330 ° C, and the operating pressure is 0.08 MpAg. Isopropanol dehydration to form propylene and other small by-products;

[0127] The reaction product 3 enters the bottom of the water washing tower 4, and the water 5 is inserted from the top of the column, and the water, aldehyde, etc. are removed from the...

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Abstract

The invention discloses a system and a method for preparing propylene from isopropanol. The system comprises an isopropanol dehydration reactor, a water washing tower, an alkaline washing tower, a light component removal tower or a heavy component removal tower and a propylene tower, wherein the bottom of the isopropanol dehydration reactor is connected with a water scrubber, the top of the water scrubber is connected with an alkaline tower, the top of the alkaline tower is connected with a light component removal tower or a heavy component removal tower, and the light component removal tower or the heavy component removal tower is connected with a propylene tower. By adopting the system and the method, propylene with the purity of 99.9% can be obtained; wherein the obtained propylene can be used as reactants for synthesis of polypropylene, acrylonitrile, propylene oxide, ethylene-propylene rubber and the like. The method has the advantages of simple process, high propylene purity, high recovery rate and the like.

Description

Technical field [0001] The present invention relates to the field of propylene, and is further referred to, and is a system and method involving propylene propylene propylene. Background technique [0002] In recent years, China has strong propylene demand, ethylene devices, and propylene recovery of propylene were propylene. [0003] A by-product acetone is generated during the process of preparing phenol by isopropylbenzene, and with the rapid development of the domestic phenol market, the extensive use of phenol technology, the basic balance of demand, makes a large amount of acetone to continue The market is sluggish. In addition, many chemical processes can also be produced or by-product acetone. In order to effectively use acetone, it is desirable to develop a path from acetone to isopropanol and dehydrated isopropanol to propylene. [0004] Preparation of phenol production of phenol in domestic isopropylbenzene method, separating propylene is dehydrated, separating propyle...

Claims

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Application Information

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IPC IPC(8): C07C1/24C07C7/00C07C7/11C07C7/148C07C11/06
CPCC07C1/24C07C7/005C07C7/11C07C7/148C07C11/06Y02P30/40
Inventor 李东风廖丽华李琰罗淑娟姜健准李春芳田峻
Owner CHINA PETROLEUM & CHEM CORP
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