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Hydrogen-making method by utilizing catalytic cracked regenerated flue gas

A technology of catalytic cracking and flue gas regeneration, applied in chemical instruments and methods, hydrogen, chemical recovery, etc., can solve problems that have not been properly solved, achieve short reaction time, solve environmental pollution, and reduce operating load.

Inactive Publication Date: 2003-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the problem of CO in the regenerated flue gas has not been properly resolved

Method used

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  • Hydrogen-making method by utilizing catalytic cracked regenerated flue gas

Examples

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Effect test

Embodiment 1

[0038] This example illustrates that the incomplete regeneration of the raw catalyst under the conditions described in step (3) of the present invention can greatly increase the concentration of CO in the regenerated flue gas.

[0039] At Φ 内 On the 22 small fixed fluidized bed device, the GVR-1 industrial spent catalyst (produced by the Qilu Petrochemical Company Catalyst Plant) was used for testing, and the carbon content of the agent was 1.2% by weight. The test steps are as follows: Put 80 grams of the above-mentioned spent agent into a small fixed fluidized bed reactor, and under the conditions of 530℃, 0.12MPa, bed space velocity of 0.2m / s, and regeneration gas residence time of 2.8 seconds , To perform incomplete regeneration of the biochemical; collect the regeneration flue gas and analyze its composition. The test results are shown in Table 2.

Embodiment 2

[0046] This example illustrates that the incomplete regeneration of the raw catalyst under the conditions described in step (3) of the present invention can greatly increase the concentration of CO in the regenerated flue gas.

[0047] At Φ 内 50 small-scale fixed fluidized bed equipment, using GVR-1 industrial spent catalyst (industrially produced by Qilu Petrochemical Company Catalyst Plant) for testing, the carbon content of the agent is 1.2% by weight. The test steps are as follows: 1500 grams of the above-mentioned spent agent is put into a small fixed fluidized bed reactor, and under the conditions of 660℃, 0.12Mpa, bed space velocity of 0.3m / s, and regeneration gas residence time of 5 seconds , To perform incomplete regeneration of the biochemical; collect the regeneration flue gas and analyze its composition. The test results are shown in Table 3.

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Abstract

The method for making hydrogen by utilizing catalytic cracking regenerated flue gas includes the following steps: (1). contacting hydrocarbon oil raw material with catalytic cracking catalyst and making them produce reaction; (2). separating reaction oil vapour and catalyst of carbon deposit, feeding oil vapour into subsequent separation system, and stripping the catalyst of carbon deposit and feeding it into first regenerator; (3). in first regenerator contacting the catalyst of carbon deposit with oxygen-containing gas for 2-2.5 sec. at 500-660 deg.C and empty bed gas speed of 0.2-0.8 m / s, feeding regenerated flue gas into subsquent hydrogen-making process; (4). separating CO from regenerated flue gas, making CO and water vapour produce conversion reaction and separating hydrogen from the obtained gas product.

Description

Technical field [0001] The invention relates to a catalytic cracking process of petroleum hydrocarbons and a steam hydrogen production process, and more specifically, a method for preparing hydrogen by utilizing catalytic cracking regenerated flue gas. Background technique [0002] The development trend of heavy and degraded crude oil worldwide and the increasingly stringent environmental protection regulations have raised many new problems for the petroleum processing industry. For example, the content of harmful elements such as sulfur, nitrogen, nickel, and vanadium in the feed oil is relatively high, and hydrogenation pretreatment is required; the hydrogen and carbon in the feed oil is relatively low. In order to increase the yield of high-value products such as gasoline and diesel, it must be carried out. Hydrotreating: The deterioration of raw materials will inevitably affect the properties of the product. In order to improve the quality of gasoline and diesel, it has to be...

Claims

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Application Information

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IPC IPC(8): C01B3/26C01B3/34
CPCY02P20/584
Inventor 吴治国张久顺汪燮卿
Owner CHINA PETROLEUM & CHEM CORP
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