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Apparatus and method for treating waste steam discharged from decoking step of delayed coking process

A delayed coking and processing device technology, applied in chemical instruments and methods, combined devices, separation methods, etc., to achieve the effects of reducing pollution, improving the environment, and facilitating operation

Inactive Publication Date: 2013-01-02
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam entrained with oil gas, sulfide and coke powder discharged during the decoking process will directly enter the atmosphere and will have an adverse impact on the environment around the coking unit

Method used

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  • Apparatus and method for treating waste steam discharged from decoking step of delayed coking process
  • Apparatus and method for treating waste steam discharged from decoking step of delayed coking process
  • Apparatus and method for treating waste steam discharged from decoking step of delayed coking process

Examples

Experimental program
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Effect test

Embodiment

[0031] Such as figure 1 As shown, a delayed coking decoking exhaust steam treatment device.

[0032] Including: steam collection hood, steam cooler i, liquid separation tank j, induced draft fan k, coke powder filter m and desulfurization tank n, steam collection is installed at each port where oil-containing, sulfur-containing and coke powder-containing steam 1 is discharged Hood: top steam collection hood h 1 , Bottom steam collection hood h 2 , Breathing valve steam collection cover h 3 and cold coke hot water tank steam collection cover h 4 , respectively installed on the top of the coke tower a, above the chute b, the outlet of the breathing valve g on the top of the coke tower, and the top of the cold coke hot water tank f, and a shut-off valve o is set for each road, so that one of them can be cut off when no steam is discharged. Among them, the tower top steam collection hood h 1 There is an opening at the top, and the coke cutter d and the drill pipe e can pass t...

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Abstract

The invention provides an apparatus and a method for treating waste steam discharged from decoking step of delayed coking process. The apparatus comprises a steam collecting cover, a steam cooler, a liquid separation tank, a draft fan, a coke powder filter, and a desulfurization tank. The steam collecting cover is arranged on the steam outlet of the decoking unit for delayed coking process, and communicates with the inlet of the steam cooler. The outlet of the steam cooler is sequentially connected with the liquid separation tank, the draft fan, the coke powder filter, and the desulfurization tank. The method for treating waste steam includes collecting waste steam discharged from decoking step, cooling, performing gas-liquid separation, filtering to remove coke powder, desulfurizing, and discharging into the atmosphere. The apparatus and the method are used for collecting and treating waste steam containing oil, sulfur and coke powder from decoking step of delayed coking process, thus preventing environment pollution.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a delayed coking decoking exhaust steam treatment device and method. Background technique [0002] Delayed coking is the main method of processing low-quality heavy oil in refineries. As a continuous production and intermittent operation process, there are generally at least two coke towers. When one coke tower is on-line coke, the other coke tower is used for decoking. For related operations, the two coke towers alternately carry out coking and decoking operations. The coke tower for decoking needs to go through small steam blowing, big steam blowing, small water supply, large water supply, water release, top cover opening, bottom cover opening, hydraulic coke cutting, steam driving air, steam pressure test, steam exhaust dehydration, oil and gas pre-treatment Heat and other steps. The water is discharged into the cold coke hot water tank, and the temperature of the water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D5/00B01D53/48B01D53/52
Inventor 李出和李晋楼
Owner CHINA PETROCHEMICAL CORP
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