Method for preparing light fuel oil and propylene from poor-quality raw oil

A technology for low-quality feedstock oil and light fuel oil, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of increased yield of dry gas and coke, and achieve increased yield of light oil, raw material Improve oil properties and realize the effect of efficient utilization of oil resources

Active Publication Date: 2009-09-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventor found through creative thinking and repeated experiments that the conversion rate of heavy oil catalytic cracking is not as high

Method used

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  • Method for preparing light fuel oil and propylene from poor-quality raw oil
  • Method for preparing light fuel oil and propylene from poor-quality raw oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 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 bottom of the reaction zone I, contacts with the catalyst GZ-1 and reacts. At the bottom of zone I, inferior raw materials are reacted at a reaction temperature of 600°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 gas is mixed with circulating propane, C4 hydrocarbons and diesel oil at a reaction temperature of 500 ° C and a weight hourly space velocity 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 to be charred are separated in the settler, and the produ...

Embodiment 2

[0067] This example follows figure 2 Inferior hydrogenation residue raw material C 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 bottom of the reaction zone I, contacts with the catalyst GZ-1 and reacts. At the bottom of zone I, inferior raw materials are reacted at a reaction temperature of 600°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; 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 to be charred are separated in the settler, and the products are cut according to the distillation range in the separation system, so as to obtain dry gas, liquefied gas, propylene, gasoline, diesel oil And heavy...

Embodiment 3

[0073] 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 bottom of the reaction zone I, contacts and reacts with the catalyst GZ-1, and in the reaction zone I Bottom, low-quality raw materials at a reaction temperature of 600°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 to be charred are separated in the settler, and the products are cut according to the distillation ...

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Abstract

A method for preparing light fuel oil and propylene from poor-quality raw oil comprises the following steps: the poor-quality raw oil sequentially enters a first reaction zone and a second reaction zone of a catalytic conversion reactor so as to be contacted with a catalytic conversion catalyst to generate first reaction and second reaction respectively, and after gas-solid separation is implemented to reaction products and spent catalyst, the spent catalyst returns to the reactor for recycling after steam stripping and burning; the reaction products are separated to obtain propylene, gasoline, heavy oil and other products, wherein the heavy oil is contacted with hydrogen and a hydrotreating catalyst for reaction, the obtained hydrogenated heavy oil circulates to the first reaction zone of the catalytic conversion reactor or/and other catalytic conversion devices for further reaction to obtain the target products of the propylene and the gasoline. The characteristic of the heavy oil obtained by hydrotreating after the mild catalytic conversion of the poor-quality raw oil is significantly improved, thereby significantly increasing light oil, reducing dry gas, reducing the yield of oil slurry and realizing the high-efficient utilization of petroleum resources.

Description

technical field [0001] The invention belongs to a method for catalytic conversion of hydrocarbon oil, more specifically, a method for converting inferior raw materials into a large amount of light fuel oil and propylene by combining catalytic cracking and hydrotreating processes of hydrocarbon 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 ...

Claims

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Application Information

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IPC IPC(8): C10G69/04
Inventor 许友好龚剑洪张执刚程从礼谢朝钢毛安国戴立顺王子军田松柏张久顺
Owner CHINA PETROLEUM & CHEM CORP
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