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A double riser catalytic cracking device and method

A technology of double riser and riser, applied in the field of double riser catalytic cracking unit, can solve the problems of heavy oil riser difficult to realize, short oil agent contact time, narrow application range, etc., achieve short light hydrocarbon oil agent contact time, Effects of property improvement and short heavy oil oil agent contact time

Active Publication Date: 2017-10-24
SINOPEC LUOYANG PETROCHEM ENG CORP +1
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Problems solved by technology

[0007] In order to solve the problems existing in the existing catalytic cracking process, the measures of reducing the temperature of the regenerated catalyst and increasing the ratio of catalyst to oil in the riser of heavy oil are narrow in scope of application, the adjustment is not flexible enough, the activity of the catalyst participating in the catalytic cracking reaction of heavy oil is low, and the riser of heavy oil is difficult to realize Short oil agent contact time and other problems, the present invention provides a double riser catalytic cracking device and method

Method used

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  • A double riser catalytic cracking device and method
  • A double riser catalytic cracking device and method
  • A double riser catalytic cracking device and method

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Embodiment 1

[0072] The main operating conditions and product distribution of embodiment 1 are shown in Table 4, and the main properties of the liquid product of embodiment 1 are shown in table 5; the main operating conditions and product distribution of embodiment 2 are shown in table 6, and the main properties of the liquid product of embodiment 2 are shown in table 7; the main operating conditions and product distribution of embodiment 3 are shown in Table 8, and the main properties of the liquid product of embodiment 3 are shown in Table 9; the main operating conditions and product distribution of embodiment 4 are shown in Table 10, and the main properties of the liquid product of embodiment 4 See 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 of Example 5 are shown in Table 13.

[0073] Table 1 Properties of heavy oil raw materials (comparative examples, examples 1-5)

[0074] ...

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Abstract

The invention discloses a double riser catalytic cracking device, which mainly includes a heavy oil riser, a light hydrocarbon riser, a settler, a regenerator and a catalyst cooler, and the regenerator includes a baffle tube regenerator and a turbulent bed Regenerator, baffle tube regenerator, turbulent bed regenerator and catalyst cooler are arranged coaxially from top to bottom. The top of the body serves as the main air outlet of the catalyst cooler and is connected to the bottom of the pre-fluidization section of the inner tube of the baffle tube regenerator; The bottom of the tank is connected to the bottom of the heavy oil riser and the light hydrocarbon riser respectively through pipelines. By adopting the invention, various heavy oil feeds and light hydrocarbon feeds can be processed, shorter oil agent contact time can be realized, and product quality can be improved.

Description

technical field [0001] The invention relates to a double riser catalytic cracking device and method 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 r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/08C10G55/00B01J8/24
Inventor 陈曼桥武立宪王文柯樊麦跃汤海涛
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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