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Combined process for carbonization-carbonization full cut fraction hydrotreatment

A technology of coking whole distillate oil and hydrotreating, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems such as unachievable effect, simplify operation complexity, reduce operation difficulty and operation cost, Simplify the structure and the effect of related supporting facilities

Active Publication Date: 2012-02-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the coking fractionation tower process, this technology still cannot achieve satisfactory results in the end

Method used

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  • Combined process for carbonization-carbonization full cut fraction hydrotreatment
  • Combined process for carbonization-carbonization full cut fraction hydrotreatment
  • Combined process for carbonization-carbonization full cut fraction hydrotreatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0034] The properties of the raw oil used in the experiment are shown in Table 1, the coking test conditions and test results are shown in Table 2, the coking whole distillate oil hydrofining conditions are shown in Table 3, and the main properties of the hydrogenated product after fractionation are shown in Table 4. Embodiment 1~4 according to figure 1 Process operation, embodiment 5 according to figure 2 Process operation.

[0035] Table 1 Properties of raw oil

[0036] project

Raw oil

Density, (20℃), Kg / m 3

984.2

Carbon residue, wt%

15.7

Sulfur content, wt%

1.34

H / C atomic ratio

1.53

Initial boiling point, ℃

385

50％，℃

460

95％，℃

556

[0037] Table 2 Coking process operating conditions and results

[0038]

[0039] Table 3 coker full distillate oil (C 5 + Whole distillates) hydrotreating conditions

[0040]

[0041] Table 4 Main properties of hydr...

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Abstract

The invention discloses a coking-coking full range hydroprocessing combined process method. A simplified fractionating tower is arranged at a coking part, and a heat-exchange evaporation section and a condensing fractionation section are respectively arranged at the lower part and the upper part of the simplified fractionating tower. Oil gas produced by the coking reaction enter the simplified fractionating tower from the lower part, and flows upwards into the condensing fractionation section at the upper part of the simplified fractionating tower after being leached and exchanging heat with coking material, most of the oil gas is liquefied in the condensing fractionation section and led out of the simplified fractionating tower, a condensate led out of the simplified fractionating tower undergoes the hydroprocessing after separating out water, and a hydroprocessing product is separated into hydrogenated gasoline, hydrogenated diesel oil and hydrogenated wax oil. The method organically combines the coking technique and the hydroprocessing technique to simplify the coking technical process and improve the economical efficiency and reliability of the hydroprocessing part in the meanwhile.

Description

technical field [0001] The invention belongs to the combined technology of thermal processing technology and hydrogenation treatment technology. Specifically, it is a combined process technology of delayed coking process and coking whole distillate hydrotreating process. Background technique [0002] At present, the trend of heavy and inferior crude oil is obvious, and with the development of the economy, the demand for light distillate oil, especially clean light distillate oil, is gradually increasing. Therefore, it is necessary to process inferior and heavy raw materials into clean light distillate oil. quality distillate products. Coking is a commonly used method to convert inferior heavy and residual oil to light. Its advantages are low investment and wide source of raw materials. The main disadvantage is that the liquid yield is low, and the quality of liquid products is poor, which requires further processing. [0003] In the coking process and subsequent product pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
Inventor 方向晨张学萍蒋立敬胡长禄韩照明勾连忠石岩
Owner CHINA PETROLEUM & CHEM CORP
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