On-line measurement system and method for backflow oxygen content of diffused gas at top of coking tank

A technology for measuring system and gas oxygen content, which is applied in measuring devices, measuring fluid pressure, instruments, etc., can solve the problems of potential safety hazards, exhaust gas discharge, etc., and achieve the effects of improving operating rate, reducing emissions, and protecting the environment

Pending Publication Date: 2022-03-25
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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Problems solved by technology

During the commissioning process, due to the lack of automatic emptying control of the residual exhaust gas in the pipeline, some exhaust gas with excessive oxygen content will be discharged into the gas pipeline, posing a safety hazard

Method used

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  • On-line measurement system and method for backflow oxygen content of diffused gas at top of coking tank
  • On-line measurement system and method for backflow oxygen content of diffused gas at top of coking tank
  • On-line measurement system and method for backflow oxygen content of diffused gas at top of coking tank

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Embodiment Construction

[0063] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0064] Such as figure 1 As shown, an on-line measurement system for the oxygen content of the blow-off gas backflow on the top of the coking tank includes the blow-off gas pipeline oxygen content measuring instrument AT01 (1) arranged on the blow-off gas return pipe. It also includes a nitrogen supplement pipe and a nitrogen supplement pipeline regulating valve AV01(2) arranged on the nitrogen supplement pipe; the inlet of the nitrogen supplement pipe is connected to the nitrogen main pipe, and the outlet is connected to the front end of the oxygen content measuring instrument AT01(1) of the vent gas pipeline. on the pipeline. The nitrogen main pipe is also provided with a nitrogen main pipe pressure measuring instrument PT02 (8). The nitrogen supplement pipeline regulating valve AV01(2) is also provided with an air source contr...

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Abstract

The invention provides an online measurement system and method for the backflow oxygen content of diffused gas at the top of a coking tank. The system comprises a diffused gas pipeline oxygen content measurement instrument AT01 arranged on a diffused gas backflow pipe; the system further comprises a nitrogen supplementing pipe and a nitrogen supplementing pipeline adjusting valve AV01 arranged on the nitrogen supplementing pipe. Before a diffused gas backflow pipeline enters a gas pipeline, the oxygen content control in a tank top diffused gas fault state is realized by adding a mode of automatically controlling the nitrogen supplement amount, so that the diffused gas backflow oxygen content is controlled within an allowable emission range, and the online maintenance of the diffused gas fault becomes possible. An intelligent analysis method is adopted to monitor the oxygen content control process amount of diffused gas in real time, intelligent diagnosis results of diffused gas faults under different conditions are timely and accurately given out, corresponding fault maintenance suggestions are given out according to the intelligent results given out by an expert system, and the quantification degree of the faults is given out. And the bleeding gas fault diagnosis and automatic control level in the gas purification process is improved.

Description

technical field [0001] The invention relates to the technical field of oxygen content detection in coking gas purification production, in particular to an on-line measurement system and method for oxygen content in backflow of coking tank top vented gas. Background technique [0002] With the improvement of national environmental protection requirements and the maturity of gas purification technology in coking, there are many storage tanks in the gas purification system in the coking field for the storage of chemical products, and many chemical product raw materials have different degrees of volatility. During the production process, the storage tank is frequently loaded and discharged, resulting in pressure fluctuations in the top area of ​​the tank. If the negative pressure is severe, air will be sucked into the top area of ​​the tank, resulting in an increase in the oxygen content in the vented gas. If the positive pressure is severe, the volatilized gas will be released ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01L11/00
CPCG01N33/0036G01L11/00
Inventor 刘晓东刘思萌杨凯曹军军崔远哲袁浚开
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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