Delayed coking device and counterflow steam pressure testing method for coke tower

A technology of delayed coking and coke tower, which is applied in cracking, non-catalytic thermal cracking, petroleum industry, etc. It can solve problems such as easy water hammer, large steam consumption, and small temperature rise of coke tower, so as to achieve reduced operation and avoid Aggregation, damage prevention effect

Active Publication Date: 2013-04-17
CHINA PETROCHEMICAL CORP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] In order to solve a series of problems such as small temperature rise of the coke tower, large steam consumption, and easy water hammer during operation in the steam pressure test operation of the coke tower in the current delayed coking process, the present invention provides a delayed coking device and coke tower counter-flow type steam pressure test method

Method used

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  • Delayed coking device and counterflow steam pressure testing method for coke tower
  • Delayed coking device and counterflow steam pressure testing method for coke tower

Examples

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Embodiment

[0030] Such as figure 2 As shown, a delayed coking unit includes coke tower one a1 and coke tower two a2, and the four-way valve b, oil rejection valve c, breathing valve d, large oil and gas line ball valve e and related pipelines connected thereto. The purging and pressure test steam pipeline is set on the top of the coke tower a1 and the coke tower two a2, respectively connected to the coke tower a1 and the coke tower two a2, and the bottom of the coke tower a1 and the coke tower two a2 is provided with a vent to the coke Pool plumbing.

[0031] During defocusing operation,

[0032] The coke oil 1 from the outlet of the heating furnace enters the coke tower a1 after being switched by the four-way valve b, and the high-temperature oil gas 2 after the reaction enters the downstream fractionation system from the top of the tower. As shown in the figure, a coke tower a1 and a2, when the first coke tower a1 is in coke operation, the second coke tower a2 is in the decoking ope...

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Abstract

The invention discloses a delayed coking device and a counterflow steam pressure testing method for a coke tower. The device comprises blowing and pressure testing pipelines which are arranged at the top of a first coke tower and a second coke tower and is connected with the first coke tower and the second coke tower respectively or connected with the large oil and gas pipelines disposed at the top of the first coke tower and the second coke tower. The method comprises the steps of introducing pressure testing steam into the coke tower from the top of the coke tower, and replacing air in the coke tower from the bottom of the coke tower by flowing in the coke tower from top to bottom. With the device and the method provided by the invention, disadvantages in a conventional flow are overcome, and the operation is simple, flexible and reliable.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a delayed coking device and a countercurrent steam pressure test method for a coke tower. Background technique [0002] Delayed coking process is a deep thermal cracking process for heavy oil. The heavy oil is rapidly heated to the required temperature (about 500°C) in the heating furnace and then enters the coke tower. High temperature thermal cracking and condensation reaction, the reaction produces dry gas, liquefied gas, gasoline, diesel oil, wax oil and coke and other products. The coking and decoking of the coking tower is an intermittent operation process, and each coking tower alternately performs the cycle switching operation of coking and decoking to ensure the continuity of the operation of the delayed coking unit. The decoking operation of the coke tower is mainly to remove the high-temperature coke in the tower after cooling, and then preheat the coke tower to a su...

Claims

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Application Information

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IPC IPC(8): C10G9/00
Inventor 黄孟旗李出和
Owner CHINA PETROCHEMICAL CORP
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