Method of increasing propylene product and reducing olefine content in gasoline using C4 distillation

A technology for C4 fraction and olefin content, which is applied in the petroleum industry, hydrocarbon cracking to produce hydrocarbons, naphtha catalytic reforming, etc., and can solve problems that have not been involved in the production of propylene and high-quality gasoline

Inactive Publication Date: 2005-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] In summary, the prior art has not yet involved the process of using gasoline and gaseous hydrocarbons rich in C4 fractions as raw materials and utilizing the catalytic conversion process to produce propylene and high-quality gasoline

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This example illustrates: using gaseous hydrocarbons rich in C4 fractions and whole gasoline as raw materials, a single-pass catalytic conversion test is carried out in a small fluidized bed reactor using a CIP catalyst.

[0040] The gaseous hydrocarbons rich in C4 cuts shown in Table 3 and the gasoline A shown in Table 2 enter the fluidized bed reactor, and the reaction temperature is 550 ° C, the pressure at the top of the reactor is 200 kPa, and the water-hydrocarbon mass ratio is 0.08 : 1 to contact the catalyst for catalytic reaction. The reaction product, steam and spent agent are separated in the settler, and the reaction product is separated to obtain gas product and liquid product, while the spent agent catalyst is stripped of the hydrocarbon product adsorbed on the spent agent by water vapor. The stripped spent catalyst is regenerated by contacting with heated hot air, and the regenerated catalyst undergoes a new catalytic conversion reaction. The test condit...

Embodiment 2

[0047] This example illustrates the case of using a CIP catalyst to carry out a catalytic conversion test in a small fluidized bed reactor using gaseous hydrocarbons rich in C4 fractions and narrow gasoline fractions as raw materials.

[0048] The gaseous hydrocarbons rich in C4 cuts shown in Table 3 and the gasoline B shown in Table 2 enter the fluidized bed reactor, and the reaction temperature is 550 ° C, the pressure at the top of the reactor is 200 kPa, and the water-hydrocarbon mass ratio is 0.05 ~0.15:1 under the condition of contact with CIP catalyst for catalytic reaction. The reaction product, steam and spent agent are separated in the settler, and the reaction product is separated to obtain gas product and liquid product, while the spent agent catalyst is stripped of the hydrocarbon product adsorbed on the spent agent by water vapor. The stripped spent catalyst is regenerated by contacting with heated hot air, and the regenerated catalyst undergoes a new catalytic c...

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Abstract

A process for using C4 fraction to increase output of propene and decrease the content of olefin in gasoline includes such steps as pouring the raw gasoline and the gas-state hydrocarbon rich in C4 fraction in fluidized-bed reactor, contacting with catalyst (high-Si zeolite), reacting at 500-650 deg.C, separating the resultant from catalyst, and regenerating the catalyst.

Description

technical field [0001] The invention belongs to the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, it is a catalytic conversion method for increasing the production of propylene and reducing the content of olefins in gasoline by using C4 fractions. Background technique [0002] Small molecule olefins such as ethylene, propylene and butene are the most basic raw materials for organic synthesis. At present, the production of small molecular olefins in the world mainly adopts steam cracking method, but because the high-temperature cracking furnace is easy to coke, the steam cracking device is only suitable for processing light raw material oil, such as natural gas, naphtha and light diesel oil, and also produces by-products A certain amount of aromatic hydrocarbons. Due to the relatively heavy crude oil in my country and the low yield of naphtha and other light oils, the contradiction between supply and demand of raw materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C4/06C10G11/18C10G35/14
CPCY02P20/584
Inventor 高永灿张久顺谢朝钢张瑞驰杨义华吴治国马建国
Owner CHINA PETROLEUM & CHEM CORP
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