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Method for removing oxygen-containing compound in hydrocarbon stream

A technology for compounds and hydrocarbons, used in the field of removing oxygenated compounds in hydrocarbon streams, can solve the problems of high activation temperature and low adsorption capacity of adsorbents, and achieve the effect of high adsorption capacity

Active Publication Date: 2013-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the adsorption capacity of the adsorbent is low and the activation temperature is high in the prior art.

Method used

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  • Method for removing oxygen-containing compound in hydrocarbon stream
  • Method for removing oxygen-containing compound in hydrocarbon stream
  • Method for removing oxygen-containing compound in hydrocarbon stream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1 g of fresh metal-organic compound adsorbent Cu 3 (BTC) 2 (H 2 O) 3 Loaded into a fixed bed reactor, at about 2000 hr -1 The bed was heated to 180°C in air for 2 hours and then cooled to 26°C. Then feed the propylene raw material containing 1000 ppm dimethyl ether, at 1200 hr -1 The time required for the concentration of dimethyl ether in the absorbed propylene stream to reach 1 ppm to pass through the bed of the adsorbent at a certain space velocity is recorded as the breakthrough time. Activation of solid adsorbent at 2000 hr -1 It is carried out in air, the activation temperature is 180°C, and the activation time is about 1 hour. The evaluation results are shown in Table 1.

[0013]

Embodiment 2

[0015] The adsorbent used is the organometallic compound Cu after adsorption and activation 10 times according to the conditions of Example 1. 3 (BTC) 2 (H2O) 3 , 1 gram of this adsorbent is packed into a fixed-bed reactor, and the adsorption test is carried out using the same conditions as in Example 1, and the evaluation results are shown in Table 1.

[0016]

Embodiment 3～8

[0018] The solid adsorbent is fresh metal-organic compound adsorbent Cu 3 (BTC) 2 (H2O) 3 , Its consumption is the same as embodiment 1, and embodiment 3 and 4 change adsorption temperature relative to embodiment 1. Embodiment 5 changes the adsorption pressure relative to Embodiment 1. In Example 6, relative to Example 1, the gas volume space velocity of the hydrocarbon stream was changed, and in Embodiments 7 and 8, relative to Example 1, the activation temperature of the adsorbent was changed. See Table 1 for the experimental conditions and results of Examples 1-8.

[0019]

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Abstract

The present invention relates to a method for removing an oxygen-containing compound in a hydrocarbon stream, wherein problems of low absorption agent absorption capacity and high activation temperature in the existing absorption purification technology are mainly solved with the present invention. The technical scheme comprises that a porous metal organic compound is adopted as a solid absorption agent to remove oxygen-containing compound impurities from a hydrocarbon stream. With the technical scheme, the problems in the prior art are well solved, and the technical scheme can be used for purification treatments of various hydrocarbon streams in industrial production.

Description

technical field [0001] The present invention relates to a method for removing oxygenated compounds from hydrocarbon streams. Background technique [0002] It is well known that hydrocarbons such as ethylene and propylene can be obtained by catalytic conversion of some oxygenates, such as methanol or dimethyl ether, etc., but the hydrocarbon streams obtained by this method often contain a certain amount of impurities of oxygenates, such as H2O, methanol and dimethyl ether, etc., the presence of these oxygen-containing compounds will have a very adverse effect on the use of olefins as raw materials for polymerization reactions, so it is necessary to remove a small amount of oxygen-containing compound impurities in the olefin stream. [0003] It is a relatively effective method to remove oxygen-containing compound impurities in hydrocarbon streams by adsorption. For example, US Patent 6111162 describes the use of silica gel as an adsorbent to remove oxygen-containing compounds ...

Claims

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Application Information

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IPC IPC(8): B01D15/08
Inventor 袁志庆许中强陈奕
Owner CHINA PETROLEUM & CHEM CORP
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