Delayed-coking exhaust gas treatment method

A tail gas treatment and delayed coking technology, applied in chemical instruments and methods, separation methods, water/sludge/sewage treatment, etc., can solve the emulsification problem of sulfur-containing sewage, high oil content and coke powder content affect the operation of downstream devices, etc. problem, to achieve the effect of prolonging the operation cycle and optimizing the venting process

Inactive Publication Date: 2017-07-04
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problem of emulsification of sulfur-containing sewage generated in the treatment process of the current delayed coking unit, and the problems that high oil content

Method used

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  • Delayed-coking exhaust gas treatment method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] A delayed coking tail gas treatment method includes the following steps: the exhaust gas from the coke tower (a large amount of steam carries oil and gas) enters the lower part of the steam blowing and venting tower for cooling and oil-water separation, and five separation trays are arranged on the upper part of the steam blowing and venting tower, A 6-layer baffle tray is set in the lower part, the gasoline at the top of the tower is refluxed, the temperature at the top of the tower is 100℃, and the temperature at the bottom of the blowing and venting tower is 130℃. The heavy oil at the bottom of the tower is pumped out by the pump at the bottom of the blowing and venting tower and cooled to After 90℃, part of the heavy dirty oil at the bottom of the blowing steam venting tower will return to the bottom of the blowing venting tower, and the other part will enter the middle of the blowing venting tower. The light dirty oil and sewage at the top of the blo...

Example Embodiment

[0037] Example 2

[0038] A delayed coking tail gas treatment method, including the following steps: the exhaust gas from the coke tower (a large amount of steam carries oil and gas) enters the lower part of the steam blowing and venting tower for cooling and oil-water separation. The upper part of the blowing and venting tower is provided with three trays, and the lower part Set up 8 trays, reflux gasoline at the top of the tower, the temperature at the top of the tower is 100°C, and the temperature at the bottom of the steam blowing and venting tower is 130°C. The heavy oil at the bottom of the tower is pumped out by the pump at the bottom of the steam blowing and venting tower and cooled to 90°C by a cooler. Part of the heavy dirty oil at the bottom of the steam blowing and venting tower flows back to the bottom of the blowing and venting tower, and the other part enters the middle of the blowing and venting tower. The light sludge and sewage at the top of the blowing and venti...

Example Embodiment

[0039] Example 3

[0040] A delayed coking tail gas treatment method includes the following steps: the exhaust gas from the coking tower (a large amount of steam carries oil and gas) enters the lower part of the steam blowing and venting tower for cooling and oil-water separation. The upper part of the blowing and venting tower is provided with 7 trays, and the lower part Set up 5 layers of trays, the top of the tower is refluxed with gasoline, the top temperature is 100°C, and the bottom temperature of the blowing and venting tower is 130°C. The heavy oil at the bottom of the tower is pumped out by the pump at the bottom of the blowing and venting tower and cooled to 90°C by a cooler. Part of the heavy dirty oil at the bottom of the steam blowing and venting tower flows back to the bottom of the blowing and venting tower, and the other part enters the middle of the blowing and venting tower. The light sludge and sewage at the top of the blowing and venting tower are first cooled ...

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Abstract

The invention discloses a delayed-coking exhaust gas treatment method. According to the method, sulfur-bearing sewage enters a steaming-out vent tower for cooling and oil-water separation, part of heavy sump oil of a tower bottom of the steaming-out vent tower flows back to the bottom of steaming-out vent tower, the other part of the heavy sump oil enters the middle part of the steaming-out vent tower, light sump oil and sewage of a tower top of the steaming-out vent tower enter an oil-water separating tank for oil-water separation at the temperature of 30 DEG C to 60 DEG C, the light sump oil is discharged from the top of the oil-water separating tank, the sewage enters a sewage tank for treatment, by the treatment of the sewage tank, coke powder is discharged from the bottom of the sewage tank, the light sump oil is discharged from the upper part of the sewage tank, and purified sewage is discharged from the lower part of the sewage tank. According to the method, the problem that sulfur-bearing sewage of the top of the vent tower is emulsified and is high in oil and coke powder content is solved.

Description

[0001] Technical field: [0002] The invention belongs to the field of multistage sewage treatment, and relates to a delayed coking tail gas treatment method. [0003] Background technique: [0004] With the increasingly heavy and inferior quality of processed crude oil in the domestic oil refining industry, the yield of residual oil is increasing day by day. Delayed coking, as an important conversion process of inferior residual oil, occupies an important position in refineries. Delayed coking is used as the main conversion method or supplementary method of refinery residue. [0005] With the development and progress of society, the domestic environmental protection requirements are becoming more and more stringent, and the emission volume and emission indicators of waste gas, sewage, waste residue and other pollutants from various refinery devices are also becoming stricter. As one of the main heavy oil conversion units, the delayed coking unit is also facing increasingly se...

Claims

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Application Information

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IPC IPC(8): B01D46/00C02F1/40
CPCB01D46/00C02F1/40C02F2101/101
Inventor 郭永博李和杰徐江华王晨涯杜翔刘杨
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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