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Method for preparing light fuel oil and propylene from inferior raw material oil

A kind of technology of inferior raw material oil and light fuel oil

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors have found through research that although these fine particle catalysts have high cracking capacity, their selectivity to dry gas and coke is poor, and optimizing the sieve composition of the catalyst can further improve the selectivity of dry gas and coke

Method used

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  • Method for preparing light fuel oil and propylene from inferior raw material oil
  • Method for preparing light fuel oil and propylene from inferior raw material oil
  • Method for preparing light fuel oil and propylene from inferior raw material oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] This example follows figure 2 The process of vacuum residual 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 GZL-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 GZL-1 to raw material is 6, and the weight ratio of steam to raw material is 0.05 to carry out cracking reaction; in reaction zone II, oil gas is mixed with recycled propane, C4 hydrocarbons and diesel oil at a reaction temperature of 500 ° C, 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 product is cut accord...

Embodiment 2

[0088] This example follows figure 2 Inferior hydrogenated residual oil raw material B 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 bottom of the reaction zone I, contacted with the catalyst GZL-1 and reacted. 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 ...

Embodiment 3

[0093] The embodiment according to Figure 5 Carry out the implementation, 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 and reacts with the catalyst GZL-1, and the In the lower part, inferior raw materials are processed 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 the reaction zone II, oil and gas are mixed with recycled propane and C4 hydrocarbons 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 ar...

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Abstract

The invention discloses a method for preparing light fuel oil and propylene from inferior raw material oil. The inferior raw material oil enters a first reaction area and a second reaction area of a catalytic conversion reactor in turn to contact a catalytic conversion catalyst with coarse particle size distribution so as to perform primary reaction and secondary reaction respectively; after the reaction product and the spent catalyst undergo gas-solid separation, the spent catalyst is subjected to steam stripping and charring in turn and then returned to the reactor for recycling; and the reaction product is separated to obtain propylene, gasoline, catalytic wax oil and other products, wherein the catalytic wax oil enters at least one of hydrotreatment device, an arene extraction device and a hydrocracking device so as to obtain hydrogenated catalytic wax oil, raffinate oil and hydrocracking tail oil. The method improves the yield of the light oil, reduces the yield of oil slurry, realizes efficient utilization of petroleum resources, reduces the consumption of the catalyst, and reduces the catalyst content of the catalytic wax oil.

Description

technical field [0001] The invention belongs to the catalytic conversion method of hydrocarbon oil, more specifically, it is a method for converting low-quality raw materials into a large amount of light fuel oil and propylene. 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...

Claims

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Application Information

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IPC IPC(8): C10G69/04C10G55/06C07C11/06C07C4/06
CPCY02P20/52Y02P20/584
Inventor 许友好龚剑洪张执刚程从礼崔守业唐津莲杨轶男
Owner CHINA PETROLEUM & CHEM CORP
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