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Improved delayed coking process for raising yield of gasoline and diesel oil

A delayed coking and diesel technology, applied in the delayed coking field, can solve the problems of increasing the yield of gasoline and diesel, and achieve the effects of increasing the processing capacity, being easy to implement and popularizing, and having less investment.

Inactive Publication Date: 2006-01-25
新疆寰球工程公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention solves the technical problem of increasing the yield of gasoline and diesel in the conventional delayed coking process

Method used

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  • Improved delayed coking process for raising yield of gasoline and diesel oil
  • Improved delayed coking process for raising yield of gasoline and diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 is in the conventional delayed coking process, in the lower part of the coking fractionation column B, between the diesel oil extraction line 8 and the wax oil extraction line 11, a light cycle oil extraction line 9 is added, and the extracted light cycle oil is used for light cycle oil extraction. The outlet pipeline 5 of the feed pump F of the circulating oil pump H to the coking heating furnace A is mixed with the bottom oil of the fractionation tower from the feed pump F. Among them: the oil and gas are heated to 495°C or 496°C by the coking heating furnace and then enter the coke tower; the extraction amount of light cycle oil is 5% or 7% or 9% of the relative vacuum residue raw material amount by weight percentage; except for the addition of light fraction In addition to the oil circulation, it is better to increase the residence time of the mixed feed oil in the coking heating furnace in the heating furnace tube. There are more than 2 to 3 rows of fu...

Embodiment 2

[0021] Embodiment 2 differs from Embodiment 1 in that: Embodiment 2 is a production scheme mainly increasing diesel oil. During the operation of embodiment 2, the furnace tube arrangement and structure of the coking heating furnace, the equipment and process flow such as coke tower and fractionation tower are the same as in embodiment 1, that is, the equipment and process flow of the device after transformation can adapt to the conditions of example 1 and example 2 Production requirements, but the process and operating parameters of the device need to be adjusted accordingly. When producing according to the scheme of increasing diesel oil production, the coking reaction depth is relatively low, and the outlet temperature of the radiant section of the heating furnace only needs to be 493°C or 494°C or 495°C, which is lower than that of Example 1. 2 to 3°C, the extraction amount of light cycle oil is 10% or 12% or 15% of the relative vacuum residue raw material amount by weight p...

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Abstract

The present invention relates to an improved delayed coking process for increasing yield of gasoline and diesel oil, and is characterized by that in the conventional delayed coking process, in the lower portion of coking fractionating tower and between the diesel-oil extracting line and wax-oil extracting line a light cycle oil extracting line is added, then the extracted light cycle oil can be pumped into the outlet pipeline of feeding pump of the coking heating furnace by using light cycle oil pump and mixed with coking fractionating tower bottom oil discharged from feeding pump.

Description

1. Technical field: [0001] The invention relates to delayed coking in petroleum processing technology, and is an improved delayed coking technology for increasing the yield of gasoline and diesel. 2. Background technology: [0002] Delayed coking process is the most mature residual oil lightening technology so far. This process uses vacuum residual oil as raw material, and uses high temperature cracking to make the residual oil undergo deep reaction and convert it into gas, gasoline, diesel oil, wax oil and petroleum coke. In the delayed coking process, the mixed raw oil flows through the furnace tube of the heating furnace at a high flow rate, is heated to a reaction temperature of about 500°C, and then enters the coke tower for cracking, condensation and other reactions. Since the residence time of the mixed feed oil in the furnace tube of the heating furnace is very short, the cracking and condensation reactions leave the heating furnace before it can occur, and the react...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/00
Inventor 袁保同徐德红邵春宇赵瑞新王子君刘北松竺建峰黄琳
Owner 新疆寰球工程公司
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