Catalytic cracking method and device thereof
A catalytic cracking device and catalytic cracking technology, applied in catalytic cracking, cracking, petroleum industry, etc., can solve the problems of short oil agent contact time, narrow application range, and inflexible adjustment, so as to promote catalytic cracking reaction and reduce production rate , the effect of inhibiting the thermal cracking reaction
Active Publication Date: 2015-02-11
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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Problems solved by technology
[0006] The purpose of the present invention is to provide a kind of catalytic cracking method and device thereof, to solve the existing catalytic cracking process to reduce the measures of regenerated catalyst temperature applicable range is narrow (not applicable to single riser catalytic cracking device or only applicable to Catalytic cracking unit with excess heat), inflexible adjustment (the cooling effect of the regenerated catalyst is affected by the limitation of the cooling main air volume by using the main air), and the activity of the catalyst participating in the reaction is low (affected by the mixing of the light hydrocarbon to-be-generated catalyst ) and difficulty in achieving short oil contact time
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Embodiment 1
[0071] The main operating conditions and product distribution of Example 1 are shown in Table 4, and the main properties of the liquid product are shown in Table 5. The main operating conditions and product distribution of Example 2 are shown in Table 6, and the main properties of the liquid product are shown in Table 7. The main operating conditions and product distribution of Example 3 are shown in Table 8, and the main properties of the liquid product are shown in Table 9. The main operating conditions and product distribution of Example 4 are shown in Table 10, and the main properties of the liquid product are shown in Table 11. The main operating conditions and product distribution of Example 5 are shown in Table 12, and the main properties of the liquid product are shown in Table 13.
[0072] Table 1 Heavy oil raw material properties (comparative example, embodiment 1~5)
[0073] Heavy Oil Raw Materials
Daqing Atmospheric Pressure
Density (20℃), kg·...
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Abstract
The invention discloses a catalytic cracking method and a device thereof. The catalytic cracking method comprises the following steps: carrying out heavy oil catalytic cracking reaction with the oiling agent contact time of 0.2-1.5s by using a riser; carrying out gas-solid separation on a reactant flow by using a cyclone separator; feeding reaction oil gas into a fractionating tower for fractionation; after stripping a spent catalyst, feeding the spent catalyst into a first turbulent bed regenerator, and reversely contacting with smoke of a second turbulent bed regenerator and burning over 90% of generated coke; and feeding a semi-generated catalyst into the second turbulent bed regenerator to come into reverse contact with main wind to burn rest generated coke, exchanging heat and cooling, and returning the cooled regenerated catalyst to the riser to be recycled. In the regeneration process, main wind is directly conveyed to the second turbulent bed regenerator only. The invention discloses the catalytic cracking device for realizing the method. The method and device disclosed by the invention can be used for catalytic cracking of heavy oil.
Description
technical field [0001] The invention relates to a catalytic cracking method and a device thereof in the petrochemical industry. Background technique [0002] At present, the conventional catalytic cracking units used in the petrochemical industry generally have the following disadvantages: First, due to the limitation of regeneration kinetics, the regeneration temperature is relatively high, resulting in a relatively high temperature of the regenerated catalyst participating in the reaction (generally around 700°C) ;Limited by the heat balance of the device, the agent-oil ratio of the heavy oil riser is relatively small, generally the total agent-oil ratio is 5-8 (the total agent-oil ratio of the riser is the weight circulation of the catalyst in the riser and the feed of each strand of the riser The ratio of the sum of the weight flow rates), so that the number of active sites contacted by the unit weight of heavy oil feed is less, which inhibits the catalytic cracking reac...
Claims
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IPC IPC(8): C10G11/14
CPCC10G11/14C10G2300/703
Inventor 陈曼桥武立宪王文柯张亚西樊麦跃汤海涛
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC