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Alkane catalytic conversion method and reactor thereof

A catalytic conversion method and a catalytic conversion technology, which are applied in the field of alkane catalytic conversion methods and reaction equipment, can solve the problem of low alkane conversion rate and product selectivity, improve yield and selectivity, maintain continuous and efficient progress, and increase The effect of high contact probability

Inactive Publication Date: 2015-09-02
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the catalytic cracking of the dry gas rich in alkanes, light naphtha, or natural gas produced by the refinery, the conversion rate of alkanes and product selectivity are not good when the traditional riser reactor is used for catalytic conversi

Method used

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  • Alkane catalytic conversion method and reactor thereof
  • Alkane catalytic conversion method and reactor thereof

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Embodiment 1

[0037] Using ZSM-5 molecular sieve as the catalyst with an average particle size of 80 μm, and light naphtha (gasoline fraction with a boiling range of 20°C to 70°C) as the raw material of alkanes, such as figure 1 Catalytic conversion reaction is carried out in the alkane catalytic conversion reaction equipment shown. The fluidized bed reactor has an inner diameter of 50mm and a height of 3000mm. Superheated steam at 500°C is used as the stripping medium and air is used as the regeneration medium. The regeneration of the catalyst The temperature is controlled at 700°C, and the mixing temperature of the oil agent in the fluidized bed reactor is controlled at about 600°C after the oil gas and the catalyst contact. The linear velocity of mixed oil and gas is controlled at 0.8m / s, and the residence time of mixed oil and gas is controlled at 3s.

Embodiment 2

[0044] Methane catalytic cracking hydrogen production catalyst with nickel as the active component and alumina as the carrier, the average particle size is 100 μm, methane is the raw material of alkanes, in such as figure 1 Catalytic conversion reaction is carried out in the alkane catalytic conversion reaction equipment shown. The inner diameter of the fluidized bed reactor is 50mm, the height is 3000mm, the superheated steam at 500°C is used as the stripping medium, and air is used as the regeneration medium. The regeneration temperature of the catalyst is Control the temperature at 780°C, the oil mixture temperature after the contact between oil gas and catalyst in the fluidized bed reactor is controlled at about 700°C, the speed of the regenerated catalyst into the fluidized bed reactor is 30 kg / hour, the mixing of the fluidized bed reactor The linear velocity of oil and gas is controlled at 1.5m / s, and the residence time of mixed oil and gas is controlled at 10s.

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Abstract

The invention relates to an alkane catalytic conversion method and a reactor thereof. The alkane catalytic conversion method comprises the following step: contacting an alkane raw material with a catalyst in a fluidized bed reactor in a reflux mode to perform catalytic conversion reaction, wherein the alkane raw material is one or more of C1-C8 alkanes, natural gas or light naphtha. The alkane catalytic conversion reactor comprises the fluidized bed reactor, wherein the upper part of the fluidized bed reactor is provided with a catalyst guide device, and the lower part of the fluidized bed reactor is provided with an alkane raw material guide device. The alkane catalytic conversion method or alkane catalytic conversion reactor for performing alkane catalytic conversion reaction can enhance the conversion rate of the alkane raw material and the selectivity of the target product.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and in particular relates to a method for catalytic conversion of alkanes and reaction equipment thereof. Background technique [0002] Fluid catalytic cracking (FCC) technology is one of the main means of secondary processing of crude oil, and its technology development is relatively mature. At present, 70-80% of gasoline and 30% of diesel oil in the domestic market adopt fluid catalytic cracking (FCC) technology . With the change of raw materials and the continuous development of processing technology, its process flow and processing equipment are also constantly improving. However, so far, almost all the reactors of fluid catalytic cracking units (FCCU) at home and abroad use riser reactors, including ascending riser reactors and descending riser reactors. [0003] In the ascending riser reactor, the feed oil and the catalyst from the regenerator are mixed in the lower part of the ascending...

Claims

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Application Information

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IPC IPC(8): C10G11/18B01J8/24
Inventor 陈小博刘熠斌山红红杨朝合李春义
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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