Method for preparing superior fuel oil from inferior crude oil

A technology of low-quality feedstock oil and feedstock oil, which is applied in the field of catalytic conversion combination of hydrocarbon oil, can solve the problems of low propylene yield, underutilization of gasoline latent content, increase of dry gas yield, etc., and achieve reduction of oil slurry yield, It is beneficial to the operation of the catalytic cracking unit and the effect of improving the operation cycle

Active Publication Date: 2013-11-06
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

[0012] The above-mentioned prior art still has deficiencies in the design of the alkane molecular cracking reaction, resulting in a substantial increase in the dry gas yield under the condition of increasing the propylene yield. Utilization, resulting in low propylene yield, while there is room for improvement in gasoline yield and quality

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  • Method for preparing superior fuel oil from inferior crude oil
  • Method for preparing superior fuel oil from inferior crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] This example follows figure 1 The process of vacuum residue 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 reacts. In the lower part of zone I, low-quality raw materials are subjected to cracking reaction at a reaction temperature of 600°C, a reaction time of 0.4 seconds, a weight ratio of catalyst to raw material of 6, and a weight ratio of water vapor to raw material of 0.05; After mixing propane, C4 hydrocarbons and diesel oil, the cracking reaction is carried out at a reaction temperature of 500°C, a reaction time of 5 seconds, and a weight ratio of water vapor to raw material of 0.05. The distillation range is cut to obtain dry gas, liquefied gas (including propylene, propane and C4 hydrocarbons, the same below), gasoline, diesel oil and catalytic wax oil with a cut point ...

Embodiment 2

[0071] This example follows figure 2 Inferior hydrogenation residue raw material C was used as the raw material for catalytic cracking, and the test was carried out on the medium-sized device of the riser reactor. The inferior raw material entered the lower part of the reaction zone I, contacted with the catalyst GZ-1 and reacted. In the lower part of zone I, low-quality raw materials are subjected to cracking reaction at a reaction temperature of 600°C, a reaction time of 0.4 seconds, a weight ratio of catalyst to raw material of 6, and a weight ratio of water vapor to raw material of 0.05; After cooling the regenerated catalyst of the excitation medium, the cracking reaction is carried out at a reaction temperature of 500°C, a reaction time of 5 seconds, and a weight ratio of water vapor to raw material of 0.05. The distillation range is cut to obtain dry gas, liquefied gas including propylene, gasoline, diesel oil and catalytic wax oil with a cut point greater than 330 ° C...

Embodiment 3

[0077] This example is based on figure 2 The high-acid crude oil raw material E 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 and reacts with the catalyst GZ-1, and in the reaction zone I In the lower part, low-quality raw materials are subjected to cracking reaction at a reaction temperature of 600°C, a reaction time of 0.4 seconds, a weight ratio of catalyst to raw material of 6, and a weight ratio of water vapor to raw material of 0.05; , The reaction time is 5 seconds, and 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, and the product is cut according to the distillation range in the separation system, so as to obtain dry gas, including propylene. Liquefied petroleum gas...

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Abstract

The invention discloses a method for preparing superior fuel oil from inferior crude oil. The inferior crude oil enters first and second reaction areas of a catalytic conversion reactor in turn to contact a catalytic conversion catalyst to respectively generate primary reaction and secondary reaction, reaction products and the spent catalyst are subjected to gas-solid separation, and the spent catalyst is subjected to steam stripping and burning in turn and returns to the reactor to be recycled; and the reaction products are separated to form propylene, light fuel oil, catalytic wax oil and other products, wherein after the catalytic wax oil is extracted, the obtained extracted oil is subjected to hydrotreatment, and the obtained hydrogenated extracted oil is circulated to the first reaction area of the catalytic conversion reactor or / and other catalytic conversion devices for further reaction to form the target product of light fuel oil. The method integrates catalytic cracking, hydrotreatment, aromatic hydrocarbon extraction, conventional catalytic cracking and other processes, and the light fuel oil and the propylene are prepared from the inferior crude oil to the greatest degree, so that the oil resources are efficiently utilized.

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. 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 processing technology. [0003] Traditional heavy oil processing is d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/04
Inventor 魏晓丽龙军王子军戴立顺张执刚崔守业
Owner CHINA PETROLEUM & CHEM CORP
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