Catalytic conversion method of hydrocarbon oil

A catalytic conversion method and catalytic cracking technology, applied in the field of catalytic conversion, can solve the problems of high hydrogen consumption, affecting conversion, etc., and achieve the effects of optimizing operating conditions, reducing hydrogen consumption, and high octane number.

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In this method, not only the hydrogen consumption is high, but also the reaction of the hydrogenated cycle oil in the upstream zone will seriously affect the conversion of the downstream heavy oil

Method used

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  • Catalytic conversion method of hydrocarbon oil
  • Catalytic conversion method of hydrocarbon oil

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Experimental program
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Embodiment

[0045] This embodiment illustrates adopting the present invention figure 1 method provided in . The distillation range cut-off temperature of the light cycle oil fractionation tower is 250°C.

[0046] The heavy fraction of light cycle oil enters the medium-sized hydrotreating unit, and the test conditions of hydrotreating are: hydrogen partial pressure 8.0MPa; average bed reaction temperature 360°C, volume space velocity 0.5 hours -1 , hydrogen oil volume ratio 1100Nm 3 / m 3 . The dicyclic aromatics content in the hydrogenated heavy fraction was 8.0% by weight.

[0047] The main operating parameters of the catalytic cracking unit are shown in Table 3. The residence time of the reaction oil and gas is 0.2 seconds within the distance between the positions where the light fraction and the hydrogenated heavy fraction enter the riser. The residence time of the reaction oil gas is 0.2 seconds within the distance between the positions where the hydrogenated heavy distillate and...

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Abstract

The invention provides a catalytic conversion method of hydrocarbon oil. The method comprises the following steps: cutting light catalytic cycle oil into light fraction and heavy fraction; hydrotreating the heavy fraction to obtain hydrotreated heavy fraction; adding the light fraction, the hydrotreated heavy fraction and heavy hydrocarbons raw materials into a riser reactor from bottom to top by layering; cracking in the presence of a catalytic cracking catalyst; and separating a reaction product to obtain a product containing gasoline and light cycle oil. According to the method, the raiser is divided into different areas at three layers, and a regenerated catalyst is supplemented at different positions to respectively process different fractions of heavy oil and light cycle oil, which is beneficial for the optimizing of operation conditions of the three raw materials, and therefore, catalytic gasoline with high octane number can be produced to the maximum.

Description

technical field [0001] The invention belongs to the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, a catalytic conversion method for producing high-octane gasoline from heavy petroleum hydrocarbons. Background technique [0002] With the development of heavy crude oil and the rapid growth of market demand for light oil products, in my country, catalytic cracking technology, which is used to lighten heavy oil, has developed rapidly. However, a fact that must be faced is that the quality of catalytic cracking diesel oil (or "light cycle oil") has always been relatively poor, with high density, high aromatic content, and low cetane number. It is also difficult to meet increasingly stringent diesel specifications. How to solve the catalytic cracking light cycle oil is an increasingly serious problem. Another problem that exists at the same time is the long-term shortage of domestic finished gasoline, and catalytic cracking ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/1037C10G2300/70C10G2400/00C10G2400/02
Inventor 龙军龚剑洪
Owner CHINA PETROLEUM & CHEM CORP
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