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Processing method and system for inferior crude oil

A technology of inferior raw material oil and processing method, which is applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve the problems that the non-hydrotreating method is difficult to meet the requirements, the acid residue is difficult to deal with, and the energy consumption is high. It is suitable for continuous operation of large-scale production, saves the rich gas compressor, and reduces the energy consumption of the device

Active Publication Date: 2017-10-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Non-hydrogenation treatment mainly adopts acid-base refining, such as patent Chinese patent CN 101967389A, acid-base refining will not only produce a large amount of acid residue that is difficult to handle, pollute the environment, and the yield of refined oil is low; although some researchers have explored the use of single solvent in recent years Or multi-solvent extraction and refining method, such as patent Chinese patent CN CN1746265A, but there are still problems such as large solvent consumption and high energy consumption
With the improvement of environmental protection requirements, the emission standards for light fuel oil combustion exhaust at home and abroad continue to increase, and the restrictions on the sulfur, nitrogen and aromatic content of light fuel oil for vehicles are lower, so it is very easy to use non-hydrogenation treatment. Difficult to meet

Method used

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  • Processing method and system for inferior crude oil
  • Processing method and system for inferior crude oil
  • Processing method and system for inferior crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] This example follows figure 1 The process of shale oil A is used as the raw material for catalytic cracking, and the test is carried out on a small-scale continuous regeneration fluidized bed riser reactor. The shale oil A is fed from the bottom, and the diameter of the bottom of the reactor is expanded into the cracking zone of the riser 5 times of the inner diameter of II becomes fluidized bed hydrogen adsorption zone I, and the length of hydrogen adsorption zone I is 14% of the length of riser cracking zone II. Adsorption zone I introduces the cold regenerated catalytic cracking agent from outside as the first catalytic cracking catalyst, and the dry gas with a hydrogen gas fraction of 85% (the rest is methane, ethane and ethylene, etc.) flows from bottom to top as hydrogen-containing gas, and the The pipe cracking zone is transported into the high-temperature heat regenerated catalytic cracking agent as the second catalytic cracking catalyst; the CAT-3 catalyst is u...

Embodiment 2

[0090] Example 2 according to figure 2The equipment and process of the experiment were carried out, and the residual oil B and the vacuum wax oil C in Table 1 were used as raw materials for catalytic cracking, and the residual oil B and the vacuum wax oil C were fed in partitions, that is, the residual oil B was subjected to hydrogen adsorption in a fluidized bed. Zone I feeds and vacuum wax oil C feeds in riser cracking zone II; the diameter of the fluidized bed at the bottom of the reactor expands into a turbulent fluidized bed hydrogen adsorption zone (the inner diameter of the fluidized bed hydrogen adsorption zone is the 3 times of the inner diameter of the cracking zone of the riser, the length of the hydrogen adsorption zone of the fluidized bed is 10% of the cracking zone of the riser), and the first catalytic cracking catalyst of the cooling of the external heating is introduced, and the volume fraction is 80% % dry gas (the rest is methane, ethane and ethylene, etc....

Embodiment 3

[0097] This example follows image 3 The process of residual oil B is used as the raw material for catalytic cracking, and the test is carried out on a small continuous regeneration downflow fluidized bed riser reactor. The residual oil B is fed on top, and the diameter of the top of the reactor is expanded to be a fluidized bed hydrogen adsorption zone. , the diameter of the fluidized bed hydrogen adsorption zone I is 4.2 times the diameter of the riser cracking zone II, the length of the fluidized bed hydrogen adsorption zone I is 30% of the length of the riser cracking zone II and built in The heat coil cools the first catalytic cracking catalyst, and the riser section is transported into the high-temperature second catalytic cracking catalyst; CAT-3 catalyst is used, and the balancer MAT=63. After being preheated at 350°C, the residual oil enters the top of the enlarged fluidized bed adsorption reaction zone I of the reactor. With the hydrogen-containing gas flowing from t...

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Abstract

The invention discloses a processing method and system for inferior crude oil. The method comprises the steps as follows: a, feeding hydrogen-containing gas and the inferior crude oil into a fluidized bed hydrogen absorption zone (I) of a fluidized bed riser reactor for contact with a first catalytic cracking catalyst and a hydrogen adsorption reaction to obtain a hydrogen absorption product; b, feeding the hydrogen absorption product obtained in the step a into a riser cracking zone (II) of the fluidized bed riser reactor for contact with a second catalytic cracking catalyst and a catalytic cracking reaction to obtain catalytic cracked oil-gas. The inferior crude oil processed by the system with the method has the advantages that the conversion rate of the inferior crude oil can be increased substantially, the yield of dry gas and coke is reduced, and accordingly, clean and efficient use of the inferior crude oil is realized.

Description

technical field [0001] The invention relates to a processing method and system for inferior raw material oil. Background technique [0002] With the shortage of petroleum resources and the increasing demand for high-quality gasoline, diesel and low-carbon olefins, the processing technology of inferior raw material oils such as coal liquefied oil, oil sand oil, and inferior and heavy petroleum products has attracted more and more attention. Inferior raw material oil, coal liquefied oil, oil sand oil, etc., are similar to natural petroleum, but contain more unsaturated hydrocarbons than natural petroleum, and contain non-hydrocarbon organic compounds such as nitrogen, sulfur and oxygen, which not only affect their secondary processing use, but also affect the color and stability of gasoline and diesel products, with high sulfur and nitrogen content. At present, except for a small amount of production of chemicals, inferior raw material oil is mostly sold as light fuel oil wit...

Claims

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Application Information

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IPC IPC(8): C10G67/06C10G67/14
CPCC10G67/06C10G67/14C10G2300/202C10G2300/205
Inventor 唐津莲龚剑洪李泽坤
Owner CHINA PETROLEUM & CHEM CORP
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