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Method for catalyzing and transfering petroleum hydrocarbon compounds by using reactor with dual reacting regions

A technology for reactors and petroleum hydrocarbons, applied in catalytic cracking, petroleum industry, cracking, etc., can solve the problems of high olefin content and the inability to greatly reduce olefin content at the same time, so as to increase octane number and reduce hydrothermal deactivation , Improve the effect of diesel-gas ratio

Inactive Publication Date: 2004-12-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN1065900C discloses a catalytic conversion method for aromatization of gasoline fractions, the reaction temperature is 500-650°C, the pressure is 150-400 kPa, and the weight hourly space velocity is 1-6 hours -1 , The ratio of agent to oil is 5-15, and the weight ratio of steam to raw hydrocarbon is 0.05-0.5:1 Although this method can produce a large amount of aromatics, it needs to use a special catalyst
This type of method mainly increases the yield of liquefied gas by changing the catalyst, but the olefin content in gasoline is too high
[0012] To sum up, the purpose and result of the methods provided by the above-mentioned documents are all to increase the yield of liquefied gas, or to increase the yield of gasoline or diesel oil at the same time, and cannot greatly reduce the content of olefins in catalytic gasoline at the same time. And some of these methods also require special catalysts and equipment, and some require major changes to existing catalytic cracking units before they can be implemented.

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  • Method for catalyzing and transfering petroleum hydrocarbon compounds by using reactor with dual reacting regions

Examples

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Effect test

Embodiment 1

[0042] This example illustrates the situation of gasoline cracking, aromatization, desulfurization, and olefin reduction in a small fixed fluidized bed reactor using the method provided by the present invention and conventional catalysts. The properties of the catalytic gasoline feedstock refer to feedstock A in Table 1.

[0043] The test procedure is the same as that of the conventional catalytic cracking fixed fluidized bed unit. Using catalytic gasoline as raw material, the effect of temperature change on aromatics in product gasoline was investigated using MLC-500 catalyst (commercial brand, industrial production of catalyst factory of Qilu Petrochemical Company). The properties of the catalysts are listed in Table 3. Agent oil ratio is 30, space velocity is 4Hr -1 , and the temperatures were 500°C, 550°C, 600°C, and 650°C, respectively. The test data are listed in Table 4. From the data in Table 4, it can be seen that the content of aromatics in the product gasoline h...

Embodiment 2

[0045] This example illustrates the situation of gasoline cracking, aromatization, desulfurization, and olefin reduction in a small fixed fluidized bed reactor using the method provided by the present invention and using different types of catalysts.

[0046] The test procedure is the same as that of the conventional catalytic cracking fixed fluidized bed unit. See B in Table 1 for the properties of the raw materials. Catalyzed gasoline is used as raw material, conventional MLC-500 + catalyst containing shape-selective molecular sieve additives, conventional LV-23 + catalysts containing shape-selective molecular sieve additives, RAG-6, CRP-1 are used. The properties of the catalyst are shown in Table 2 and Table 3. The test data are listed in Table 5. It can be seen from Table 5 that the content of aromatics in the product gasoline has been greatly increased, reaching over 77.68% by weight; the content of olefins has dropped below 6.67% by weight; the content of sulfur has d...

Embodiment 3

[0048] This example illustrates the situation of gasoline cracking, aromatization, desulfurization, and olefin reduction in a small fixed fluidized bed reactor using the method provided by the invention and using MLC-500+ additives under different operating conditions.

[0049] The test procedure is the same as that of the conventional catalytic cracking fixed fluidized bed unit. The properties of the catalyst are shown in Table 2; the properties of the raw materials are shown in A in Table 1. The test results are listed in Table 6. From the data in Table 6, it can be known that the content of aromatics in the product gasoline has increased significantly, the content of olefins and sulfur has decreased, and the octane number has increased.

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Abstract

A process using the reactor with dual reaction regions for catalytic conversion of petroleum hydrocarbon includes reaction between raw material of gasoline, prelifted medium and catalyst in fluidized-bed reactor to generate the mixture of oil gas and catalyst, flowing upward into lifting-tube reaction region, reaction between raw hydrocarbon oil and said mixture to generate the mixture of oil gas and catalyst, separating oil gas from catalyst with carbon deposit in settling unit, further separating the oil gas, and regenerating catalyst.

Description

technical field [0001] The invention belongs to a method for catalytic conversion of petroleum hydrocarbons in the absence of hydrogen, more specifically, a method for catalytic conversion of petroleum hydrocarbons using double reaction zone reactors. Background technique [0002] Fluid catalytic cracking has been developed for 60 years, and it has always been the main means of oil refining all over the world. It is the most efficient method of converting gas oil and residual oil into light oil. . Catalytic cracking unit is the main process of secondary processing in my country's oil refining industry, which is used to produce liquefied gas, catalytic gasoline and diesel. In my country's motor gasoline, about 80% (mol fraction) comes from catalytic gasoline. Recently, a new standard for motor gasoline in my country (GB17930-1999) has been proposed, wherein the content of aromatics is not more than 40% (mol fraction); the content of olefins is not more than 35% (mol fracti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/18
Inventor 王巍陈祖庇张久顺龙军巍晓丽张春城马建国卢治财
Owner CHINA PETROLEUM & CHEM CORP
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