Method for pretreating catalytic conversion hydrocarbon oil crude material

A catalytic conversion and pretreatment technology, applied in catalytic cracking, water treatment, refining, cracking, etc., can solve the problems of reducing coke yield and achieve the effects of increasing reaction depth, reducing pollution, and reducing olefin and sulfur content in gasoline

Active Publication Date: 2009-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] To sum up, although the technical scheme of combining emulsification and metal passivation has been involved in the prior art, how to improve the stability of emulsified raw materials; improve the distribution of catalytic cracking products, especially reduce the coke yield while producing A New Method for Clean Gasoline with Low Olefin and Low Sulfur Content and Increased Propylene Production

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  • Method for pretreating catalytic conversion hydrocarbon oil crude material
  • Method for pretreating catalytic conversion hydrocarbon oil crude material

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Experimental program
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Effect test

Embodiment 4

[0034] This embodiment illustrates: adopt the method provided by the invention to adopt the complex nonionic type surfactant system that alkylphenol polyoxyethylene emulsifier (P series) and sorbitan ester emulsifier (S series) form to stock oil Experimental results obtained after preprocessing.

[0035] According to the method provided by the present invention, the raw oil is pretreated as described in the above-mentioned Example 2 to form emulsified oil, wherein the emulsifier system is S+P+n-octanol (wherein the ratio of P and S is 1:9, n-octanol The consumption of the emulsifier is 0.8% by weight of the total amount of the emulsifier), and the amount of the emulsifier is 2% by weight of the total weight of the passivator. The emulsified oil was contacted and reacted with the catalyst under the same catalytic cracking reaction conditions as in Comparative Example 2. The test conditions and main test results are shown in Table 4.

Embodiment 5

[0037] This embodiment illustrates: adopt the method provided by the invention to adopt the composite nonionic type surfactant system that alkylphenol polyoxyethylene emulsifier (P series) and sorbitan polyoxyethylene ether ester (T series) form The test results obtained after the raw oil was pretreated.

[0038] According to the method provided by the present invention, the raw material oil is pretreated to form emulsified oil as described in the above-mentioned Example 4, wherein the difference is that the emulsifier system is changed to T+P+n-octanol system. The emulsified oil was contacted and reacted with the catalyst under the same catalytic cracking reaction conditions as Comparative Example 4. The test conditions and main test results are shown in Table 4.

[0039] As can be seen from the test results in Table 4, compared with Comparative Example 2, gasoline, light oil yield (gasoline+diesel oil) and total liquid yield (liquefied gas) were obtained in Example 4 and Exa...

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Abstract

A method for pretreating catalytically converted hydrocarbon oil feedstock. The catalytic cracking feedstock oil mixed with emulsifier, passivator, stabilizing agent and water is sent to an emulsifier, emulsified at 60-100°C, and prepared into an oil-in-pack Water-based emulsified raw material. The method can improve the atomization effect of raw materials, alleviate metal pollution, reduce the olefin and sulfur content in product gasoline while reducing the coke yield, increasing the yield of light oil, propylene and isobutane.

Description

technical field [0001] The invention belongs to a petroleum hydrocarbon catalytic cracking method in the absence of hydrogen, more specifically, a method for pretreatment of hydrocarbon oil raw materials in the petroleum hydrocarbon catalytic cracking process. Background technique [0002] At present, there have been relevant research reports at home and abroad on the technology of introducing emulsification technology into the heavy oil catalytic cracking process. The atomization and vaporization of heavy oil play a very important role in the catalytic cracking reaction of heavy oil. With the use of high-efficiency atomizing nozzles, the efficiency of catalytic cracking of heavy oil has been improved to a certain extent. The use of emulsified heavy oil as feedstock for catalytic cracking is based on the "micro-explosion" theory and the "molecular aggregation and depolymerization" theory. The emulsified raw oil after one atomization is in contact with a high-temperature cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/00C10G31/08
Inventor 高永灿张瑞驰张久顺谢朝钢孙益群马建国
Owner CHINA PETROLEUM & CHEM CORP
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