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Crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method

A catalytic cracking, carbon olefin technology, applied in chemical instruments and methods, catalytic cracking, hydrocarbon cracking to produce hydrocarbons, etc., can solve problems such as the cracking of polycyclic aromatic hydrocarbons, etc., to achieve strong anti-metal pollution, low agent consumption, steam Low dosage effect

Pending Publication Date: 2019-04-05
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technology cannot solve the cracking problem of polycyclic aromatic hydrocarbons

Method used

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  • Crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method
  • Crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method
  • Crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method

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Experimental program
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Embodiment 1

[0028]Reaction experiments were carried out with desalted Russian crude oil and Daqing crude oil respectively. The main properties of the two crude oils are shown in Table 1. Before carrying out the reaction, the light components (naphtha) were extracted by atmospheric distillation respectively, with initial boiling point ~ 200 ° C, wherein the naphtha extracted from Russian crude oil was 23wt%, and the naphtha extracted from Daqing crude oil was 12wt% %.

[0029] Table 1. Main properties of Russian crude oil and Daqing crude oil

[0030]

[0031] The reaction is carried out on a circulating fluidized bed device, the catalyst storage capacity of the reverse regeneration system is 30kg, and the catalyst regeneration temperature is 800°C.

[0032] Attached figure 2 The light and heavy feeds shown are reacted in two reactors with dense phase sections. The operating conditions and reaction product distribution are shown in Table 2. Catalyst oxide composition: SiO 2 / Al 2...

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Abstract

The invention provides a crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method. The crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparingmethod is characterized by comprising the following steps of 1), desalinating and dewatering crude oil, then heating the crude oil in a heating furnace, and then dividing the heated crude oil into heavy components and light components in a distillation tower at a cut point of 150-300 DEG C; 2) subjecting the light components discharged from the top of the distillation tower, namely a fed light material, and the heavy components discharged from the bottom of the distillation tower, namely a fed heavy material, to contact reaction with high-temperature catalysts under a vapor atmosphere in tworeactors separately. Compared with the prior art, the crude oil catalytic cracking low carbon olefin and aromatic hydrocarbon preparing method has the advantages of 1) high raw material adaptability,2) high metal contamination resistance of the catalysts, no hydrothermal deactivation and low reagent consumption, 3) lower energy consumption compared with steam cracking, and 4) high per-pass conversion rate and high olefin selectivity.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a method for preparing light olefins and aromatics by catalytic cracking of crude oil. Background technique [0002] The rapid development of new energy vehicles has continuously squeezed the market space of traditional fuel vehicles, which directly affects the refined oil market. In order to adapt to the development of the situation, the transformation from oil refining to chemical industry is inevitable. [0003] Catalytic cracking technology can convert olefins above C4 and heavy oil into ethylene and propylene, and is an ideal refining and chemical integration technology. However, this technique also has limitations. First, the current catalytic cracking technology cannot process residue oil with high metal content, especially residue oil with high vanadium (V) content. When the content exceeds 1 μg / g, the molecular sieve active component of the catalyst will be signif...

Claims

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Application Information

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IPC IPC(8): C10G11/04C10G11/05C10G11/18C07C4/06C07C11/04C07C11/06
CPCC07C4/06C07C2523/847C10G11/04C10G11/05C10G11/18C07C11/04C07C11/06Y02P20/52Y02P20/584
Inventor 李春义喀山·巴沙尔王国玮李康苗陪陪杨春潮许乃文张强
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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