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Method for producing high-octane gasoline with bastard crude oil

A technology for high-octane gasoline and low-quality crude oil, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., and can solve problems such as low cetane number, low cracking conversion rate, high content of colloids and naphthenes , to achieve the effect of increasing productivity, improving economy and simplifying the process

Active Publication Date: 2008-12-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For naphthenic crude oil with a K value of less than 12, the colloid and naphthenic content is relatively high, and it is directly processed by catalytic cracking method, the cracking conversion rate is very low, and a large amount of diesel fraction will be generated
And this part of diesel fraction is rich in naphthenes, and its cetane number is very low, so it cannot be used as a blending component of diesel
Economic benefits are not ideal

Method used

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  • Method for producing high-octane gasoline with bastard crude oil
  • Method for producing high-octane gasoline with bastard crude oil
  • Method for producing high-octane gasoline with bastard crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The feed oil is crude oil B, and the catalytic conversion reaction is carried out on the medium riser device of continuous reaction-regeneration operation. The riser reactor has an inner diameter of 16 mm and a height of 6 meters.

[0034] The regenerated catalyst with a temperature of about 700°C enters the bottom of the riser reactor through the regeneration inclined pipe, and flows upward under the action of the pre-lift steam. After the feedstock oil is preheated to about 200°C and mixed with atomized steam and diesel oil, it enters the riser reactor through the feed nozzle and contacts the hot catalyst to carry out catalytic conversion reaction. After the reaction, oil and gas, water vapor and spent catalyst enter the settler from the reactor outlet, where the oil and gas and the spent catalyst are quickly separated, and the separated oil and gas are further separated into gas products, gasoline, diesel and heavy oil through a fractionating tower. The obtained diesel o...

Embodiment 2

[0038] The difference between Example 2 and Example 1 is that diesel is injected into the reaction system through a separate nozzle at the top of the crude oil nozzle. The main operating conditions and product distribution are listed in Table 2, and the properties of gasoline and diesel in the products are listed in Tables 3 and 4.

Embodiment 3

[0040] The difference between Example 3 and Example 1 is that the feedstock oil is crude oil A, and diesel is injected into the reaction system through a separate nozzle at the top of the crude oil nozzle. The main operating conditions and product distribution are listed in Table 2, and the properties of gasoline and diesel in the products are listed in Tables 3 and 4.

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Abstract

A method for producing high-octane petrol from low-quality crude oil comprises the following steps: pre-heating preprocessed crude oil with total acid number larger than 0.5 mgKOH / g and characterization factor K less than 12.5, introducing into a catalytic cracking reaction system to contact with a catalyst, reacting under catalytic cracking reaction conditions, separating oil and gas and the spent catalyst after reaction, transporting the oil and gas into a separation system to obtain products with different distillation ranges, returning all or a portion of diesel to the reaction system for further reaction, and recycling the spent catalyst by stripping and regeneration. The method can simplify the flow, obviate the disadvantages of the prior art that can generate much diesel with lower cetane number while processing the crude oil, improve the yield of the high-octane petrol and greatly improve the economy for processing the low-quality crude oil.

Description

Technical field [0001] The invention relates to a catalytic cracking process of hydrocarbon oil in the absence of hydrogen, and more specifically, to a method for producing high-octane gasoline by using acid-containing inferior crude oil. Background technique [0002] With the continuous exploitation of crude oil, light crude oil resources have gradually decreased, and the proportion of heavy and inferior crude oil has continued to increase. The general trend of world crude oil quality is to become heavier and worse. The output of crude oil with high sulfur content, high acid value, high metal content and high residual carbon content is growing rapidly. It is predicted that the world's production of low-quality crude oil will increase from the current 16% to 20% in 2010. From the perspective of my country’s oil and gas resources, my country’s Shengli, Liaohe, and Karamay oil fields are all high acid value oil fields. In addition, Beijiang crude oil has an acid value of 4.5mgKOH / g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04
Inventor 龙军张久顺侯栓弟武雪峰毛安国张占柱田松柏汪燮卿
Owner CHINA PETROLEUM & CHEM CORP
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