Design of coke oven gas pipelines
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I am currently working on a project that involves the design of coke oven gas pipelines. It is said that such pipelines require the installation of condensate tanks and measures to prevent blockages caused by naphthalene. I would like to ask the experts: what aspects need to be taken into consideration when designing pipelines for coke oven gas?
The main consideration should be the condensation of tar and naphthalene in the coke oven gas during transportation, in order to avoid pipeline blockages
Thank you! Could you tell me the specific steps? Are there any relevant design specifications?
Gas design manual: http://www.jxcad.com.cn/read.php?tid=317906 1. Design inclination angle; 2. Design the dehydrator in the direction of the inclination angle. 3. Expansion joints should be designed for long pipelines. This post was last edited by cdvt on 2007-12-7 21:09]
Code for the design of town gas, Safety regulations for gas use in industrial enterprises, Reference materials for coking plant design, and so on
The design of gas pipelines takes into account the following aspects: 1. The issue of discharging gas condensate: water seal devices for transporting water are installed at regular intervals. 2. Consider seasonal changes (temperature variations) and the thermal expansion and contraction of gas pipelines: expansion joints should be installed. 3. Since the pipes are long, pipe supports should be installed to prevent deformation due to the weight of the pipes. 4. To facilitate the flow of the fluid resulting from gas condensation, a certain degree of inclination must also be provided. 5. Safety issues: Valves should be installed in appropriate locations to facilitate future maintenance and repairs. Additionally, a drain seal should be placed at the end of the pipeline to prevent safety accidents in case of excessive pressure. The above are my experiences accumulated from working in coking; I’m not sure if they’re very professional.
The following aspects should be primarily considered: 1. Install a gas water seal every 20-30 meters. 2. Install bellows or socket-type expansion joints in the gas pipeline. 3. Install supports for metal or concrete pipes. 4. The slope of the gas pipeline should be in the direction of gas flow, with a gradient of 3 or 5 per thousand. 5. A blind valve can be used to provide isolation; a gate valve can also be employed. An automatic gas release water seal is installed at the end of the pipeline to prevent safety accidents in cases of excessive or insufficient pressure. 6. The piping system must be equipped with steam pipes, and steam should be used to clean off tar or naphthalene when necessary. 7. The diameter of the pipes should not be too small, to prevent debris from blocking them over time.
The answer on the 9th floor is quite comprehensive and can serve as a reference; for more detailed information, one can consult the Coking Design Manual published by Jiaonai Institute, which is generally available for borrowing at provincial libraries.
It would be better to clearly state the department to which it belongs in order to answer your question