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Semi-regenerative catalytic reforming method

A catalytic reforming and semi-regeneration technology, applied in naphtha catalytic reforming, petroleum industry, hydrocarbon oil treatment, etc., can solve the problems of reduced effective product yield, increased side reactions, and increased compressor displacement. Reach the effects of reducing catalyst carbon deposition, prolonging service life and increasing hydrogen partial pressure

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former not only requires high equipment and equipment, increases equipment investment, but also increases side reactions, thereby reducing the effective product yield, while the latter requires an increase in compressor displacement and energy consumption.

Method used

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  • Semi-regenerative catalytic reforming method

Examples

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Effect test

example 1

[0019] according to figure 1 The process of reforming reaction.

[0020] The presulfurized CB-70 catalyst (produced by Changling Catalyst Factory) was used, and the carrier was γ-alumina. The content of active components calculated based on alumina is shown in Table 1. Take 50ml of CB-70 and put it into the reactor, introduce high-purity hydrogen with a purity of 99% by volume from pipeline 4, replace the system and pressurize to 1.0MPa, stop introducing hydrogen, start the compressor cycle, and make the gas / catalyst volume ratio be 2000 / 1, the pressure is 1.0MPa, the temperature is raised to 370°C at a rate of 30°C / h, the reforming reaction raw material is injected into the reactor at a feed rate of 100ml / h, and the temperature is raised to 500°C at a rate of 30°C / h , introduce high-purity hydrogen with a purity of 99% by volume from line 4 at a flow rate of 2.5 L / h. The hydrogen produced by reforming and the hydrogen supplied through the pipeline 4 are discharged through t...

example 2

[0022] The reforming reaction was carried out in the same manner as in Example 1, except that high-purity hydrogen with a purity of 99% by volume was introduced into line 4 at a flow rate of 10 L / h. The hydrogen produced by reforming and the hydrogen supplied through the pipeline 4 are discharged through the pipeline 6, and the discharge volume is about 33 L / h. The reaction result of running 500 hours is shown in Table 3.

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Abstract

The invention discloses a semi-regenerative catalytic reforming method, comprising the following steps: starting a compressor to carry out gas circulation, feeding naphtha to a semi-regenerative reforming reactor, heating to 400-550 DEG C, and reacting under 0.2-3.0MPa; introducing high-purity hydrogen at the inlet of the compressor, and mixing with reforming cycle hydrogen, wherein the volume flow per hour of the introduced high-purity hydrogen is 10-1000 times volume of the catalyst. The method is low in operation cost and simple and convenient to operate; carbon deposit of a catalyst in the reaction process can be reduced; and the service life of the catalyst is prolonged.

Description

technical field [0001] The invention is a hydrocarbon catalytic reforming method, specifically, a semi-regenerative catalytic reforming method. Background technique [0002] Catalytic reforming is an important refinery process that converts naphtha with low octane or aromatics content into high-octane gasoline or products with high aromatics content, while producing hydrogen by-product. The catalytic reforming process is mainly divided into continuous reforming process and semi-regenerative reforming process, and the catalysts used in the two processes are different. The continuous reforming catalyst uses a platinum-tin catalyst, which is characterized by good initial activity and selectivity under low pressure, but poor stability, and requires continuous regeneration to maintain the performance of the catalyst. The catalyst is activated before use and does not require pre-sulfurization after reduction. Semi-regenerative reforming catalysts generally use platinum-rhenium c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G35/04
CPCC10G35/09C10G2300/1044
Inventor 张大庆
Owner CHINA PETROLEUM & CHEM CORP
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