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Hydrogen-making method by utilizing catalytic cracked regenerated flue gas

A technology for catalytic cracking and regenerating flue gas, applied in chemical instruments and methods, hydrogen, chemical recovery, etc., can solve problems such as not being properly solved, and achieve the effects of short reaction time, solving environmental pollution, and reducing operating load

Inactive Publication Date: 2004-10-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 shows 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] in Φ 内 On the small-scale fixed fluidized bed device of 22, adopt GVR-1 industrial degenerated agent (industrial production by Qilu Petrochemical Company Catalyst Factory) to carry out test, the carbon content of this agent is 1.2 weight %. The test procedure is as follows: put 80 grams of the above-mentioned spent agent into a small fixed fluidized bed reactor, and put it under the conditions of 530°C, 0.12MPa, bed space velocity of 0.2m / s, and regeneration gas residence time of 2.8 seconds. , to incompletely regenerate the raw agent; collect the regenerated flue gas and analyze its composition. The test results are shown in Table 2.

Embodiment 2

[0046] This example shows 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] in Φ 内 50 small-scale fixed fluidized bed device, using GVR-1 industrial deactivated agent (produced by Qilu Petrochemical Company Catalyst Factory) to test, the carbon content of this agent is 1.2% by weight. The test procedure is as follows: put 1500 grams of the above-mentioned spent agent into a small fixed fluidized bed reactor, and put it under the conditions of 660°C, 0.12Mpa, bed space velocity 0.3m / s, and regeneration gas residence time of 5 seconds. , to incompletely regenerate the raw agent; collect the regenerated 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, more specifically, a method for preparing hydrogen by utilizing catalytic cracking regenerated flue gas. Background technique [0002] The development trend of heavy and inferior crude oil in the world and the increasingly stringent environmental protection regulations have brought many new problems to the petroleum processing industry. For example, the content of harmful elements such as sulfur, nitrogen, nickel, and vanadium in raw oil is high, and hydrogenation pretreatment is required; the hydrogen-carbon ratio of raw oil is low, and in order to increase the yield of high-value products such as gasoline and diesel, it is necessary to Hydrotreating: The inferiority of raw materials will inevitably affect the properties of the product. In order to improve the quality of gasoline and diesel, hydrofining has to be carried out. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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