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Catalytic cracking technology and device

A process and catalyst technology, applied in the field of catalytic cracking processes and devices, can solve the problems of complex cooling measures for regenerants, increase equipment, etc., and achieve the effects of being beneficial to product distribution, improving total liquid yield, and reducing olefin content

Inactive Publication Date: 2014-09-17
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that although the residual activity of the gasoline spent catalyst is relatively high, there is still a certain gap compared with the regenerated catalyst.
This technology plans to add a regeneration inclined pipe and an air lift pipe, and set a catalyst cooler on the newly added regeneration inclined pipe. The cooled catalyst is mixed with the hot catalyst from the original regeneration inclined pipe, and the temperature is lower after mixing. The regenerant reacts with the raw material in contact. This technology can reduce the mixing temperature of the oil agent, increase the ratio of agent to oil, and improve the product distribution. However, the cooling measures of the regenerant in this technology are slightly complicated and require more equipment.

Method used

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  • Catalytic cracking technology and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 (comparative example)

[0036] The test was carried out on an ordinary riser catalytic cracking test device. The feed was pipe-conveyed mixed heavy oil. The main properties are listed in Table 1. The processing capacity is 30 kg / day. The catalyst used in the test is a CDC industrial balancer to balance the micro-reactive activity of the catalyst. It is 62, and the carbon content is 0.05% by weight. The main operating conditions, product distribution and main properties of the riser reactor are listed in Table 2 and Table 3.

Embodiment 2

[0037] Example 2 (comparative example)

[0038] According to Example 1, the difference is that the feed is hydrogenated wax oil, the main properties are listed in Table 1, the processing capacity is 30 kg / day, the catalyst used in the test is RSC-2006 industrial balancer, and the balance catalyst has a micro-reactive activity of 60 , The carbon content is 0.06% by weight. The main operating conditions, product distribution and main properties of the riser reactor are listed in Table 2 and Table 3.

Embodiment 3

[0039] Example 3 (comparative example)

[0040] According to Example 1, the difference is that the feed is hydrogenated heavy oil, the main properties are listed in Table 1, the processing capacity is 30 kg / day, the catalyst used in the test is MLC-500 industrial balancer, and the balance catalyst has a micro-reactive activity of 63. The carbon content is 0.03% by weight. The main operating conditions, product distribution and main properties of the riser reactor are listed in Table 2 and Table 3.

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Abstract

The invention discloses a catalytic cracking technology and a device. Raw oil contacts and reacts with a catalyst from a catalyst pre-stripping mixer; after the reaction, oil gas is separated from a spent catalyst; separated reaction oil gas enters a fractionating tower for fractionation; the separated spent catalyst undergoes stripping and then is completely regenerated; a part of regenerant enters a catalyst heat-exchanger to undergo heat exchanged with part of prevailing wind and then enters the catalyst pre-stripping mixer; another part of the regenerant enters an external heat removal device for heat remove and cooling; and a part of a cooling regenerant returns to a regenerator and another part enters the catalyst pre-stripping mixer to be mixed with the regenerant from the catalyst heat-exchanger, and the mixture is recycled to a riser reactor. By the use of the technology, catalyst / oil ratio of the catalytic cracking device can be raised; dry gas and coke yield of the catalytic cracking device is reduced; total liquid yield is raised; and olefin content in gasoline and SOX emission in catalytic flue gas are simultaneously reduced.

Description

Technical field [0001] The invention belongs to the field of catalytic cracking of hydrocarbon oil in the absence of hydrogen, and in particular relates to a catalytic cracking process and device for cooperatively optimizing a reverse regeneration system. Background technique [0002] While paying attention to environmental protection, maximizing economic benefits is also the goal pursued by enterprises. Low dry gas and coke yields and high liquid yield have always been the means for catalytic cracking technology to improve economic benefits. In recent years, there have been many studies on optimizing the reactor system and improving the distribution of FCC products. [0003] US Patent US5451313 discloses a method for optimizing the reverse system, called "X Design", which was researched by UOP Company. The purpose of this technology is to increase the ratio of agent to oil and improve product distribution. Its characteristic is that a catalyst mixer is installed between the reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/06C10G11/14
Inventor 闫鸿飞孟凡东王龙延樊麦跃黄延召李秋芝
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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