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Coking petrolatum oil processing method

A technology of coking wax oil and wax oil, which is applied in the petroleum industry, cracking, catalytic cracking, etc., and can solve the problems of high investment and operating costs, and reducing the amount of raw materials for catalytic cracking

Active Publication Date: 2007-11-14
中国石油化工股份有限公司武汉分公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above method not only reduces the amount of catalytic cracking raw materials, but also needs to build a complete set of solvent extraction equipment, and the investment and operation costs are quite large

Method used

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  • Coking petrolatum oil processing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The vacuum residue produced by Yizheng mixed crude oil is processed by delayed coking to obtain coking wax oil raw material, its properties: density 0.9188 density / g·cm -3 (20°C), the basic nitrogen content is 2100μg·g -1 , treated with 1% refined preparation, settled for 3 hours, washed with 5% by weight and then entered into the electro-sedimentation tank (D), dehydrated at an electric field strength of 2000v / cm, and the basic nitrogen content of the refined oil after refining was 1205 μg g -1 ; Treat with 2% refining preparation, settle for 3 hours, enter the electro-settling tank (D) after washing with 5% by weight, dehydrate at an electric field strength of 2000v / cm, and the basic nitrogen content of the refined oil after refining is 890 μg g -1 , the catalytic cracking effect of refined oil is as follows:

[0024] Table 3 Comparison of catalytic cracking effects before and after refining coker gas oil

[0025]

[0026] As can be seen from Table 3, the ...

Embodiment 2

[0028] The vacuum residue produced by Yizheng mixed crude oil is processed by delayed coking to obtain coking wax oil raw material. Its properties are: density 0.9188 density / g.cm -3 (20°C), the basic nitrogen content is 2100μg.g -1 , treated with 1% refined preparation, settled for 3 hours, washed with 5% by weight and then entered into the electro-sedimentation tank (D), dehydrated at an electric field strength of 2000v / cm, and the basic nitrogen content of the refined oil after refining was 1205 μg.g -1 ; Treat with 2% refining preparation, settle for 3 hours, enter the electro-settling tank (D) after washing with 5% by weight, dehydrate at electric field strength 2000v / cm, the basic nitrogen content of the refined oil after refining is 890 μ g.g -1 ; Straight-run wax oil properties: density 0.9108 density / g.cm -3 (20°C), the basic nitrogen content is 636μ.g -1 . The catalytic cracking effect of coker wax oil before and after blending and refining of straight run wax oil...

Embodiment 3

[0034] The vacuum residue produced by Yizheng+Xijiang mixed crude oil is processed by delayed coking to obtain coking wax oil raw material, its properties: density 0.9152 density / g.cm -3 (20°C), the basic nitrogen content is 1987μg.g -1 , treated with 2% refining preparation, settled for 2 hours, entered the electro-settling tank (D) after washing with 3% by weight, dehydrated at an electric field strength of 800v / cm, and the basic nitrogen content of the refined oil after refining was 805 μg.g -1 ; Straight-run wax oil properties: density 0.9056 density / g.cm -3 (20°C), the basic nitrogen content is 516μg.g -1 . The catalytic cracking effect of coker wax oil before and after blending and refining of straight run wax oil is as follows:

[0035] Table 5 Catalytic cracking effect of coker wax oil (40%) before and after refining straight-run wax oil

[0036]

[0037] As can be seen from Table 5, the light oil yield after refining refined wax oil (40%) mixed with stra...

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Abstract

The invention discloses a coking petrolatum oil processing method comprising the steps of, (1) static state mixing, (2) depositing for separating slag, (3) purifying and dewatering, (4) catalytic cracking. The coking petrolatum oil refined solution can be used to effectively remove the alkaline nitrides and part metals in the coking wax oil.

Description

technical field [0001] The invention relates to a coking wax oil processing method, which belongs to the field of petroleum refining. [0002] With the continuous development of my country's national economy, the demand for fuel oil is increasing day by day, and crude oil has a tendency to become thicker and heavier. This requires rational use of limited resources to convert as much heavy oil as possible into fuel oil. Catalytic cracking is effective means to achieve this end. Straight-run wax oil is a good raw material for catalytic cracking, while coker wax oil produced from vacuum residue and catalytic cracking oil slurry is difficult to process due to the high content of aromatics and nitrogen. At present, most refineries with coking units add a large amount of coker wax oil to catalytic cracking raw materials, which reduces the yield of light oil in catalytic cracking units. This is not only because coker wax oil itself is difficult to crack, but more importantly, , beca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/00
Inventor 沈喜洲夏明桂瞿东蕙张敬武史济义严一民黄姣菊沈红军赵勇
Owner 中国石油化工股份有限公司武汉分公司