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Delayed coking steam evacuating and cooling system and application thereof

A technology of steam blowing and venting and delayed coking, which is applied in cracking, non-catalytic thermal cracking, petroleum industry, etc., and can solve problems such as temporary solutions but not root causes

Active Publication Date: 2015-04-29
PETROCHINA CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are also some applications of anti-wax technology in air coolers, but the symptoms are not the root cause

Method used

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  • Delayed coking steam evacuating and cooling system and application thereof

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Embodiment Construction

[0013] Such as figure 1 Shown: a delayed coking steam blowing and venting cooling system according to the present invention, including: venting cooling tower 1, tower top reflux distributor A2, tower top reflux distributor B3, tower bottom reflux distributor A4, tower bottom reflux distributor Device B5, gas phase distributor 6, tower bottom reboiler 7, tower bottom sewage pump 8, tower bottom pump 9, tower bottom oil cooling water tank 10, tower top sewage pump 11, sewage pump 12, circulating water system 13, heavy Distillate oil storage tank 14, light distillate oil storage tank 15, sewage treatment system 16, tower top three-phase separator 17, low pressure gas tank 18, tower top air cooler 19, tower top aftercooler 20;

[0014] The inlet of the venting cooling tower 1 at the lower part is connected to the outlet of the coke tower for blowing steam and venting oil and gas. The gas phase distributor 6 is arranged at the inlet of the tower, and the tower bottom reflux distrib...

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Abstract

The invention relates to a delayed coking steam evacuating and cooling system and application thereof. A gas-phase distributor, a tower bottom reflux distributor B, a tower bottom reflux distributor A, a tower top reflux distributor B and a tower top reflux distributor A are arranged in an evacuation cooling tower in sequence from an inlet; the tower top reflux distributor B and the tower top reflux distributor A are connected with a light distillate oil storage tank; the tower bottom reflux distributor B and the tower bottom reflux distributor A are connected with an outlet at the bottom of the evacuation cooling tower; a heavy distillate oil storage tank is connected with an inlet at the lower part of the evacuation cooling tower; an outlet at the top of the evacuation cooling tower is connected with a tower top three-phase separator; a gas-phase outlet of the tower top three-phase separator is connected with a low-pressure gas tank; a bottom oil-phase outlet of the tower top three-phase separator is connected with the light distillate oil storage tank, the tower top reflux distributor A and the tower top reflux distributor B; and a bottom liquid-phase outlet of the tower top three-phase separator is connected with a sewage treatment system. The system can be used for improving the separation accuracy and washing effect of light and heavy condensed oil, the gas phase at the top of the evacuation cooling tower is clean, and accidents caused by a wax deposition phenomenon are avoided.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and relates to a delayed coking steam blowing and venting cooling system and its application. Background technique [0002] The venting system of the delayed coking unit generally adopts the closed circulation contact cooling process of heavy distillate oil at present, and absorbs condensed oil with heavy distillate oil. A large amount of steam and a small amount of oil and gas generated during steam blowing and coke cooling of the coke tower enter the vent cooling tower for washing, and the heavy oil after washing is pumped by the bottom oil pump of the vent cooling tower until the bottom oil of the vent cooling tower is cooled to 80°C , part of which is used as washing oil is returned to the top of the vent cooling tower, and part of it is recycled or sent out to the device; the steam and oil gas at the top of the vent cooling tower are condensed and cooled by the air cooler on the top of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/00C10G9/16
CPCC10G9/002C10G9/16
Inventor 范海玲张成金谢崇亮李爱凌李芹颜峰岳昭
Owner PETROCHINA CO LTD
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