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Catalytic cracking conversion method of hydrocarbon raw material and its device

A technology for catalytic cracking and raw materials, which is applied in the field of catalytic cracking and conversion of hydrocarbon raw materials to reduce the olefin content of gasoline, can solve the problems of poor product selectivity, unfavorable regeneration, large temperature difference in the reaction process, etc. , the effect of low contact temperature

Inactive Publication Date: 2008-06-11
洛阳石化设备研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing gasoline reaction process, on the one hand, because gasoline is directly in contact with the high-temperature regenerant, the temperature difference in the reaction process is relatively large, resulting in poor product selectivity; It is well utilized, but directly sent to the regenerator, which is not good for regeneration

Method used

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  • Catalytic cracking conversion method of hydrocarbon raw material and its device
  • Catalytic cracking conversion method of hydrocarbon raw material and its device
  • Catalytic cracking conversion method of hydrocarbon raw material and its device

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment 1, present embodiment adopts device to see figure 1 , beside the heavy oil reactor 10 of the heavy oil reaction-regeneration device, a gasoline reactor 20 sharing the regeneration device is connected in parallel, the outlet of the gasoline reactor 20 is provided with a settler 40, and the gasoline catalyst stripper 60 under the gasoline reaction settler 40 A catalyst delivery pipe 14 is provided between the second reaction zone 102 of the heavy oil reactor 10 . A catalyst return pipe 24 is provided between the gasoline catalyst stripper 60 provided under the gasoline settler 40 and the bottom of the gasoline reactor 20 . The first reaction zone (catalytic cracking reaction zone) of the gasoline reactor 20 and the heavy oil reactor 10 is a conventional riser. 41 is a gas-solid separator.

[0028] The reaction materials are: atmospheric pressure heavy oil, 100t / h heavy oil, gasoline feedstock is heavy oil to react self-produced gasoline; heavy oil is preheate...

Embodiment 2

[0031] Embodiment 2, the device structure of this embodiment see image 3 , and the structural difference in Example 1 is that a catalyst relay delivery pipe 14B is provided between the gasoline catalyst stripper 60 and the bottom of the refined oil riser 30, and the second reaction zone 102 for the heavy oil reaction adopts a fluidized bed type.

[0032] The reaction materials are: Daqing atmospheric heavy oil, 100t / h heavy oil, gasoline feed is catalytic gasoline from other devices, 40t / h; heavy oil preheating 220°C, gasoline 40°C; The two channels respectively enter the respective catalytic cracking reaction risers, and the gasoline enters the reactor in two channels; the reaction temperature in the raw oil cracking zone is 510°C, and the reaction time is 1.0s; The reaction temperature is 485°C, the reaction time is 4s; the gasoline reaction temperature is 400°C, the reaction time is 4s; the catalyst mixing temperature is 620°C before the reaction in the oil refinery riser,...

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Abstract

The invention relates to a hydrocarbon raw material catalytic-cracking converting method and device, belonging to petroleum hydrocarbon catalytic-cracking converting technical field, connecting a gasoline reaction riser in parallel with a heavy oil reaction riser to make the catalyst enter the bottoms of the second or / and first heavy oil reaction regions, so as to take part in modifying reaction in the second heavy reaction region or / and catalytic cracking reaction in the first heavy reaction region, respectively. And it can raise yield of heavy oil reaction by 1-2%, reduce the alkene content in the produced gasoline by 15 percent, and reduce losses of secondary gasoline reaction by 30% above.

Description

technical field [0001] The invention belongs to the technical field of catalytic conversion of petroleum hydrocarbons, and in particular relates to a method and device for catalytic cracking conversion of hydrocarbon raw materials, which can increase catalytic cracking yield, improve product quality, and especially reduce olefin content in gasoline. Background technique [0002] Catalytic cracking is an important secondary processing method for petroleum heavy fractions. Especially in China, about 80% of gasoline comes from catalytic cracking units. How to improve the efficiency of catalytic cracking unit and improve product quality are very important. Conventional catalytic cracking methods and devices use riser reactors, which have obvious deficiencies in the reaction process. Firstly, the temperature of the regenerant is high, which limits the ratio of reactant to oil and the preheating temperature of heavy oil; secondly, the efficiency of the second half of the riser r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/08
Inventor 石宝珍
Owner 洛阳石化设备研究所
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