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Method for removing oxysulfide and/or nitrogen oxide from flue gas and hydrocarbon oil cracking method

A catalytic cracking, inorganic oxide technology, applied in chemical instruments and methods, catalytic cracking, hydrocarbon oil cracking, etc., can solve the problems of only discarding, short effective period of adsorbent, single use of adsorbent, etc. The effect of reducing production cost and simplifying production process

Active Publication Date: 2008-07-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the desulfurization and denitrification effect of the SNAP method is outstanding (the desulfurization rate is higher than 95%, and the denitrification rate is higher than 80%), the SNAP method must use special Na / γ-Al 2 o 3 Adsorbent, when the adsorbent treats the regenerated flue gas, the effective period of the adsorbent is short, so that the continuous effective time of the SNAP method is short
In addition, Na / γ-Al 2 o 3 Adsorbents are single-purpose and can only be discarded when they cannot be recycled

Method used

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  • Method for removing oxysulfide and/or nitrogen oxide from flue gas and hydrocarbon oil cracking method
  • Method for removing oxysulfide and/or nitrogen oxide from flue gas and hydrocarbon oil cracking method
  • Method for removing oxysulfide and/or nitrogen oxide from flue gas and hydrocarbon oil cracking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] This example illustrates the method provided by the present invention for removing sulfur oxides and nitrogen oxides in the flue gas from catalytic cracking catalyst regeneration.

[0063] (1) Adsorption effect test of adsorbent

[0064] Pass the simulated flue gas into a fixed fluidized bed reactor (60 cm in diameter, 6 cm in thickness, and 3,700 cm in height) equipped with adsorbent, at a temperature of 215-225°C, and a weight hourly space velocity of 20,000-23,000 hours-1 , under the condition that the pressure in the fixed fluidized bed reactor is 0.008-0.015 MPa, the simulated flue gas is contacted with the adsorbent, and the gas product after contacting with the adsorbent is measured by the KM9106 comprehensive flue gas analyzer of Kane Company in the UK composition. The adsorbent is CR022 fresh industrial catalyst (industrial production of the Catalyst Factory of Qilu Petrochemical Company, the composition of the catalyst is shown in Table 2). The calculated de...

Embodiment 2-7

[0096] This example illustrates the method provided by the present invention for removing sulfur oxides and nitrogen oxides in the flue gas from catalytic cracking catalyst regeneration.

[0097] According to the method of step (1) in embodiment 1, remove the sulfur oxide and nitrogen oxide in the simulated flue gas of embodiment 1, and measure the present invention to remove sulfur oxide according to the method for step (3) in embodiment 1 And the NOx method lasts for an effective time. The difference is the type of FCC catalyst used as adsorbent, packing density, contact temperature of adsorption reaction, weight hourly space velocity and contact pressure, as shown in Table 8. Wherein, the main component content and physical and chemical properties of the MMC-3 (Qilu Petrochemical Company Catalyst Factory production) and GOR-III (Qilu Petrochemical Company Catalyst Factory production) used are shown in Table 7; 1.1% by weight, the carbon content of the regenerated catalyst ...

Embodiment 8-17

[0119] (1) The catalytic cracking catalyst is used as an adsorbent.

[0120] According to the method in Example 1, the sulfur oxides and nitrogen oxides in the simulated flue gas of Example 1 are continuously removed until the desulfurization rate drops to 80%. The difference is that the catalytic cracking catalyst used as the adsorbent is fresh MLC-500 Catalyst (Qilu Catalyst Factory production), obtains the fresh MLC-500 catalyst that has been used as adsorbent, hereinafter referred to as unregenerated adsorbent; With the regenerated MLC-500 catalyst that contains carbon deposition 0.043% through the catalytic cracking regeneration process, continue to remove Remove the sulfur oxides and nitrogen oxides in the simulated flue gas of Example 1 until the desulfurization rate drops to 80%, and obtain a regenerated catalyst with unregenerated adsorption performance after contacting with the regenerated flue gas of the catalytic cracking catalyst, hereinafter referred to as the reg...

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PUM

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Abstract

The invention discloses a method for desorbing oxysulphide and / or oxynitride in the regenerated fume of a catalytic cracking catalyst, and the method comprises that the fume is kept in contact with a sorbent, wherein, the sorbent is a catalytic cracking catalyst. The method for desorbing oxysulphide and / or oxynitride in the regenerated fume of the catalytic cracking catalyst which is provided by the invention adopts the catalytic cracking catalyst to replace existing specialized sorbents, thus fully achieving effects of desorbing oxysulphide and oxynitride at the same time, and as the catalytic cracking catalyst is not easy to reach saturation, the catalytic cracking catalyst can be regenerated for a plurality of times when taken as the sorbent; furthermore, after being taken as the sorbent, the catalyst can still be used in a catalytic cracking process, and the activity and reactivity of the catalyst which is taken as the catalytic cracking catalyst are not affected.

Description

technical field [0001] The present invention relates to a method for removing pollutants in catalytic cracking catalyst regenerated flue gas and a hydrocarbon oil cracking method including the method, specifically, the present invention relates to a method for removing sulfur oxidation in catalytic cracking catalyst regenerated flue gas compounds and / or nitrogen oxides and a hydrocarbon oil cracking process comprising the same. Background technique [0002] The regeneration of the spent catalyst is an important part of the catalytic cracking process. The regeneration process can restore the inherent composition and structure of the catalyst as much as possible, provide a regenerated catalyst with good activity and selectivity for the catalytic cracking process, and provide reaction heat. The regeneration process of catalytic cracking catalyst is the combustion process of carbon deposits on the catalyst, that is, the carbon deposits are burned and removed by passing air or ox...

Claims

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Application Information

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IPC IPC(8): B01D53/04C10G11/05C10G45/64C10G47/16
Inventor 郭大为张久顺龙军王巍毛安国谢朝钢傅军陈昀张执刚魏晓丽
Owner CHINA PETROLEUM & CHEM CORP
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