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Catalytic conversion process for petroleum hydrocarbons

A catalytic conversion method and technology for petroleum hydrocarbons are applied in the field of catalytic conversion of petroleum hydrocarbons to increase the production of propylene and BTX, which can solve the problems of unachieved and limited increase, and achieve fast recovery, increase octane number, and make up for octane number. effect of loss

Active Publication Date: 2005-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In summary, although the prior art provides a variety of methods for increasing the production of low-carbon olefins, the yield of low-carbon olefins, especially the increase in the yield of propylene is relatively limited, and none of them reaches more than 30% by weight.

Method used

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  • Catalytic conversion process for petroleum hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This example shows that the method provided by the invention can significantly increase the yield of propylene, and at the same time increase the content of BTX in gasoline products.

[0047] The test was carried out on a medium-sized catalytic conversion device modified according to the method of the present invention, and the structure diagram of the reaction and regeneration part is shown in Fig. 1 . The physicochemical properties of the petroleum hydrocarbon raw materials used in the test are shown in raw material a in Table 1. The catalyst used was industrially produced by the Catalyst Factory of Qilu Petrochemical Branch of China Petroleum and Chemical Corporation, and the trade name was RMP. The physical and chemical properties are shown in Table 2. See feedstock A in Table 3 for the weight composition of the C4 fraction used. The main operating conditions and product conditions are shown in Table 4.

[0048] The test procedure is as follows: the raw material a...

Embodiment 2

[0051] This example shows that the method provided by the invention can significantly increase the yield of propylene, and at the same time increase the content of BTX in gasoline products.

[0052] The test was carried out on a medium-sized catalytic conversion device modified according to the method of the present invention, and the structure diagram of the reaction and regeneration part is shown in Fig. 1 . The physicochemical properties of the petroleum hydrocarbon raw materials used in the test are shown in Table 1, raw material b. The catalyst used is the same as in Example 1. See feedstock B in Table 3 for the weight composition of the C5 fraction used. The main operating conditions and product conditions are shown in Table 5.

[0053]The test procedure is as follows: the raw material b in Table 1 is preheated and then injected into the reaction zone A of the riser to contact and react with the regenerant in it, and the resulting reaction oil gas and catalyst mixture ...

Embodiment 3

[0056] This example shows that the method provided by the invention can significantly increase the yield of propylene, and at the same time increase the content of BTX in gasoline products.

[0057] The test was carried out on a medium-sized catalytic conversion device modified according to the method of the present invention, and the structure diagram of the reaction and regeneration part is shown in Fig. 1 . The physicochemical properties of the petroleum hydrocarbon raw materials used in the test are shown in Table 1, raw material b. The catalyst used is the same as in Example 1. See feedstock C in Table 3 for the weight composition of the C4-C5 cuts used. The main operating conditions and product conditions are shown in Table 6.

[0058] The test procedure is as follows: the raw material b in Table 1 is preheated and then injected into the reaction zone A of the riser to contact and react with the regenerant in it, and the resulting reaction oil gas and catalyst mixture ...

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Abstract

A method for catalytic conversion of petroleum hydrocarbon, which contains the following steps: (1) material of petroleum hydrocarbon into reaction area A of lift leg, contacting the regenerative agent inside and reaction, the mixture of the generated reaction oil gas and catalyst up-flowing along the lift leg, and entering into the reaction C of close phase bed; (2) the separated fraction of C4 and / or C5 from the separation part of the product being injected into reaction area B of lift leg, contacting the regenerative agent inside and reaction, the mixture of the generated reaction oil gas and catalyst up-flowing along the lift leg, and entering into the reaction C of close phase bed; (3) the mixture of the reaction oil gas and catalyst from reaction area A and B of the lift leg converging in reaction C of close phase bed, and reacting sequentially; (4) separating reaction oil gas from the catalyst depositing carbon after reaction, the reaction oil gas into the separation part of the product, and the carbon-deposited catalyst returning reaction part to serve circularly after striped, regenerated. With the method it can increase the yield of ethane, propone and BTX.

Description

technical field [0001] The invention relates to a method for catalytic conversion of petroleum hydrocarbons in the absence of hydrogen, more specifically, a method for catalytic conversion of petroleum hydrocarbons to increase the production of propylene and BTX. Background technique [0002] Light olefins have always been important synthetic monomers for petrochemical products and fuels. Now, light olefins are widely used in synthetic gasoline, polymers, antifreeze, petrochemical products, explosives, solvents, drugs, fumigants, resins, synthetic rubber and Many other products. Propylene is the second most important petrochemical synthetic monomer after ethylene. [0003] At present, in the world, the main source of propylene needed for petrochemical synthesis is the by-product of ethylene plant tube furnace cracking, the output of propylene is about 15% by weight, accounting for 70% of market demand, petroleum refining (almost all comes from FCC) is the second largest so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02
Inventor 张久顺谢朝钢龙军王巍李浩张执刚
Owner CHINA PETROLEUM & CHEM CORP
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