Method for reducing emission of carbon dioxide in catalytic cracking flue gas

A technology of carbon dioxide and catalytic cracking, which is only applied in the fields of refining and cracking process treatment in multi-stage series, petroleum industry, water treatment and refining, etc., can solve the problem of not fundamentally solving carbon dioxide emissions, reducing carbon dioxide emissions, unaccounted for carbon dioxide and other issues, to achieve good emulsification function and effect, reduce carbon dioxide emissions, and achieve remarkable results in economic and environmental benefits

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Chinese patent CN1189541 with a publication date of January 2002 discloses a method of using supercooled water spray to spray FCC feed to improve feed atomization. After atomization, the droplet diameter is 200-300 microns, and it does not specify the reduction of catalytic smoke. The effect of carbon dioxide content in the medium; European patent EP1935966 with a publication date of June 2008 discloses a method for reducing carbon dioxide emissions from a catalytic cracking unit by introducing another feed gas during the reaction and regeneration process and providing At high temperature, the carbon deposition on the catalyst during the reaction process is burned, and the content of carbon monoxide is increased, which in turn reduces the content of carbon dioxide in the flue gas. This method is difficult to implement due to the introduction of another raw material gas, and there is no Fundamentally solve the problem of carbon dioxide emissions

Method used

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  • Method for reducing emission of carbon dioxide in catalytic cracking flue gas
  • Method for reducing emission of carbon dioxide in catalytic cracking flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The multifunctional composite emulsifier is made by mixing 45% of Span 80, 45% of triethanolamine surfactant and 10% of light diesel oil co-solvent.

[0023] During production, the emulsified oil of FCC raw material was prepared under the conditions of water addition 8%, emulsifier addition 0.05%, emulsification temperature 75°C, stirring speed 20000r / min, and its properties are listed in Table 2.

[0024] The catalytic cracking test was carried out on the riser unit with FCC feedstock and emulsified feedstock respectively. The process conditions are: reaction temperature 505°C, regeneration temperature 700°C, agent-oil ratio 5.0. The test is continuous oil feeding for 10 hours, and the oil feeding amount is 8kg; the feeding method of the emulsified raw material is continuous feeding, a homogeneous emulsifying equipment is installed in front of the riser nozzle, the stirring speed is adjustable, and the emulsified oil processing capacity is 0-50L . The resulting oil i...

Embodiment 2

[0028] The multifunctional compound emulsifier is made by mixing 50% of Span 80, 35% of triethanolamine surfactant and 15% of light diesel co-solvent.

[0029] During production, FCC raw material emulsified oil was prepared under the conditions of 2% water addition, 0.01% emulsifier addition, emulsification temperature 45°C, and stirring speed 16000r / min. The oil property analysis is shown in Table 2.

[0030] The catalytic cracking test was carried out on the riser unit with FCC feedstock and emulsified feedstock respectively. The process conditions are: reaction temperature 505°C, regeneration temperature 700°C, agent-oil ratio 5.0. The test is continuous oil feeding for 10 hours, and the oil feeding amount is 8kg; the feeding method of the emulsified raw material is continuous feeding, a homogeneous emulsifying equipment is installed in front of the riser nozzle, the stirring speed is adjustable, and the emulsified oil processing capacity is 0-50L . The resulting oil is s...

Embodiment 3

[0034] The multifunctional composite emulsifier is made by mixing 50% of Span 80, 42% of triethanolamine surfactant and 8% of light diesel oil co-solvent.

[0035] During production, FCC raw material emulsified oil was prepared under the conditions of water addition of 10%, emulsifier addition of 2%, emulsification temperature of 90°C, and stirring speed of 18,000 r / min. The oil property analysis is shown in Table 2.

[0036] The catalytic cracking test was carried out on the riser unit with FCC feedstock and emulsified feedstock respectively. The process conditions are: reaction temperature 505°C, regeneration temperature 700°C, agent-oil ratio 5.0. The test is continuous oil feeding for 10 hours, and the oil feeding amount is 8kg; the emulsified raw material feeding method is continuous feeding, and a homogeneous emulsifying equipment is installed in front of the nozzle of the riser, the stirring speed is adjustable, and the emulsified oil processing capacity is 0-50L . The ...

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Abstract

Belonging to the technical field of catalytic cracking for petroleum refining, the invention relates to a method for reducing emission of carbon dioxide in catalytic cracking flue gas. The method comprises the steps of: conducting emulsification to a catalytic cracking raw material under the conditions of normal pressure, an emulsification of 45-90DEG C, a water adding amount of 1%-10%, a multifunctional composite emulsifier adding amount of 0.01%-2%, and a stirring speed of 15000-20000r / min, and subjecting the emulsified raw oil to direct catalytic reaction as a catalytic material. After emulsification of a heavy oil catalytic cracking raw material, the atomization degree and dispersibility of catalytic charged material are improved, and particle sizes of charged droplets are greatly reduced, thus reaching the purposes of enhancing light oil yield and total liquid yield, lowering coke yield so as to reduce the content of carbon dioxide in flue gas.

Description

technical field [0001] The invention relates to a method for reducing carbon dioxide emission in catalytic cracking flue gas, and belongs to the technical field of catalytic cracking in petroleum refining. Background technique [0002] Due to the massive increase in greenhouse gas emissions such as carbon dioxide, the global climate has deteriorated sharply. It poses a great threat to the living environment of human beings. It has become a broad consensus of the international community to reduce carbon dioxide emissions and alleviate the greenhouse effect. According to the International Energy Agency (IEA) "2007 World Energy Outlook" statistics, in 2005 the world's total carbon dioxide emissions through the consumption of oil, natural gas and coal and flaring natural gas reached 270×10 8 t. Among them, the United States, China, Russia, Japan and India are the five largest carbon dioxide emitters. It accounts for 50% of the world's total carbon dioxide emissions. Total C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/06C10G29/20C10G31/08
Inventor 周忠国张义玲许晓斌许金山达建文徐兴忠韩新竹张艳
Owner CHINA PETROLEUM & CHEM CORP
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