Method for preparing high-quality fuel oil from inferior crude oil

A technology for inferior raw material oil and raw material oil, which is applied in the field of catalytic conversion of hydrocarbon oil, can solve the problems of low cetane number of diesel oil, reduced dry gas yield and coke yield, etc. The effect of improved properties and improved operating cycle

Active Publication Date: 2013-11-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

This method can greatly reduce the yield of dry gas and coke, but the cetane number of diesel oil is relatively low

Method used

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  • Method for preparing high-quality fuel oil from inferior crude oil

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Effect test

Embodiment 1

[0059] This embodiment is carried out according to the accompanying drawings. The vacuum residue raw material oil A is used as the raw material for catalytic cracking, and the test is carried out on the medium-sized device of the riser reactor. The inferior raw material enters the lower part of the reaction zone I, contacts with the catalyst GZ-1 and generates Reaction, in the lower part of the reaction zone I, the inferior raw material is at a reaction temperature of 595°C and a weight hourly space velocity of 100h -1 , the weight ratio of catalyst to raw material is 6, and the weight ratio of water vapor to raw material is 0.05, and the cracking reaction is carried out; in reaction zone II, oil and gas are heated at a reaction temperature of 500°C and a weight hourly space velocity of 30h -1 The cracking reaction is carried out under the condition that the weight ratio of water vapor to raw material is 0.05, the oil gas and the catalyst with carbon are separated in the settle...

Embodiment 2

[0065] This embodiment is to carry out test according to the flow process of accompanying drawing, high-acid crude oil raw material B is used as the raw material of catalytic cracking, is tested on the medium-sized device of riser reactor, and inferior raw material enters reaction zone I lower part, contacts with catalyst GZ-1 and The reaction occurs, and in the lower part of the reaction zone I, the inferior raw materials are heated at a reaction temperature of 595°C and a weight hourly space velocity of 100h -1 , the weight ratio of catalyst to raw material is 6, and the weight ratio of water vapor to raw material is 0.05, and the cracking reaction is carried out; in reaction zone II, oil and gas are heated at a reaction temperature of 500°C and a weight hourly space velocity of 30h -1 , the cracking reaction is carried out under the condition that the weight ratio of water vapor to raw material is 0.05, the oil gas and the catalyst with carbon are separated in the settler, a...

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Abstract

The invention discloses a method for preparing high-quality fuel oil from inferior crude oil. The inferior crude oil enters first and second reaction zones of a catalytic conversion reactor in turn to contact a catalytic conversion catalyst and respectively perform primary reaction and secondary reaction, and after a reaction product and a spent catalyst are subjected to gas-solid separation, the spent catalyst is stripped and scorched in turn and is returned to the reactor for recycling; the reaction product is separated to obtain propylene, light fuel oil, catalyzed wax oil and other products, wherein the catalyzed wax oil enters a hydrocracking device and is separated to obtain products such as gasoline, an aviation fuel, diesel oil, hydrocracked tail oil and the like; and the hydrocracked tail oil is circulated to the first reaction zone of the catalytic conversion reactor and / or other catalytic conversion devices for further reaction to obtain a desired product, namely the light fuel oil, and a byproduct, namely the propylene. By the method, a diesel cetane number is improved.

Description

technical field [0001] The invention belongs to the catalytic conversion combination method of hydrocarbon oil, more specifically, it is a method for converting inferior raw material oil into a large amount of light fuel oil, and at the same time, the cetane number of diesel oil is improved. Background technique [0002] The quality of crude oil is getting worse with the continuous increase of crude oil extraction, mainly manifested in the increase of crude oil density, viscosity, heavy metal content, sulfur content, nitrogen content, colloid and asphaltene content and acid value. At present, the price difference between low-quality crude oil and high-quality crude oil is also increasing with the shortage of oil resources, resulting in more and more attention to low-priced low-quality crude oil extraction and processing methods, that is, to increase as much as possible from low-quality crude oil. The yield of light oil has brought huge challenges to traditional crude oil pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02C10G69/04C07C11/06C07C4/06
CPCY02P20/584
Inventor 龙军崔守业胡志海龚剑洪董建伟张执刚马建国
Owner CHINA PETROLEUM & CHEM CORP
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