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Method and apparatus for catalytic upgrading poor gasoline

A low-quality gasoline, catalytic upgrading technology, applied in the field of hydrocarbon oil refining, can solve the problems of limited olefin volume content reduction in gasoline, limited equipment operation flexibility, complex process flow, etc., to achieve reduced sulfur content, wide application, and operability strong effect

Inactive Publication Date: 2004-11-24
SINOPEC LUOYANG PETROCHEM ENG CORP
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  • Summary
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Problems solved by technology

China University of Petroleum (East China) adopts two-stage series riser process technology (CN1302843A), reacting oil and gas in series, and catalyst relay operation, to achieve the purpose of increasing the yield of light oil and improving the quality of catalytic gasoline. The volume content of olefins, but this technology uses two stages The process of series riser reaction of oil and gas and catalyst relay will inevitably make the process very complicated and the flexibility of device operation will be limited. At the same time, due to the two-stage riser reaction of oil and gas in series, the gasoline reforming reaction will interact with other component reactions. Product selectivity is affected, and the volume content of olefins in gasoline has a limited decline, which can be reduced by about 15 volume percentage points

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Effect test

Embodiment 1

[0025] According to the inferior gasoline catalytic upgrading device of the present invention shown in the accompanying drawings, Daqing atmospheric residual oil catalytic cracking gasoline is upgraded, and the catalytic cracking catalyst adopts LRC-99 industrial balancer. The treatment capacity of the riser is 30 kg / day, and the raw material is Daqing atmospheric residue. The operating conditions and product distribution are shown in Table 1. Daqing atmospheric residue catalytic cracking gasoline to be upgraded enters the stripping section with a treatment capacity of 10 kg / day. The operating conditions and product distribution are shown in Table 2. The properties of gasoline before and after upgrading are shown in Table 3.

[0026] Example

[0027] Example

[0028] Example

Embodiment 2

[0030] According to the low-quality gasoline catalytic upgrading device of the present invention shown in the accompanying drawings, the catalytic cracking gasoline of Zhongyuan atmospheric residue is upgraded, and the catalytic cracking catalyst adopts CC-20D industrial balancer. The processing capacity of the riser is 30 kg / day, and the raw material is pipeline atmospheric residual oil. The operating conditions and product distribution are shown in Table 4; the inferior gasoline enters the stripping section, and the processing capacity is 10 kg / day. The operating conditions and product distribution are shown in Table 5. The comparison of main properties of gasoline products before and after upgrading is shown in Table 6.

[0031] Example

[0032] Example

[0033] Example

Embodiment 3

[0035] On the riser catalytic cracking device of the present invention shown in the accompanying drawings, the pipeline transported normal slag catalytic cracking gasoline is upgraded, and the catalytic cracking catalyst adopts ORBIT-3000 industrial balancer. The treatment capacity of the riser is 30 kg / day, and the raw material is Zhongyuan atmospheric residual oil. The operating conditions and product distribution are shown in Table 7; the processing capacity of inferior gasoline into the stripping section is 10 kg / day. The comparison of main properties of gasoline products before and after is shown in Table 9.

[0036] Example

[0037] Example

[0038] Example

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Abstract

A catalytic process for upgrading the poor gasoline by used of the stripping zone of settling unit in catalytic cracking apparatus includes cooling the regenerated catalyst to 300-550 deg.C, feeding the mixture of regenerated catalyst and the catalyst to be regenerated into said stripping zone, and counterflow contact of said mixture and the poor gasoline in the stripping zone for upgrading at 350-550 deg.C and 0.1-0.4 MPa for 0.5-3 seconds. It can decrease olefine content by 15-45% and S content by 10-30%, and increase RON by 0.5-2 unit.

Description

technical field [0001] The invention belongs to the field of hydrocarbon oil refining, and in particular relates to a method and a device for catalytically upgrading low-quality gasoline by using a stripping section of a catalytic cracking settler. Background technique [0002] Petroleum processing, especially gasoline produced by catalytic cracking, coking, thermal cracking and other processes has a high content of olefins and sulfur. The quality of gasoline produced by catalytic cracking, coking, thermal cracking and other processes becomes worse. On the one hand, olefins in gasoline are effective components with high octane number; on the other hand, they produce more pollutants in the combustion process to pollute the environment. Although the olefins in gasoline can be reduced to a very low level by traditional hydrofinishing, the octane number is greatly lost. Therefore, at present, various domestic research institutions have developed various technologies for reduci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/06
Inventor 王文柯郝希仁谢恪谦阎鸿飞李玖云孟凡东胡滨
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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