Safety valve emergency blow-down system in coking production process

Abstract

The invention relates to a safety valve emergency blow-down system in the coking production process. The safety valve emergency blow-down system in the coking production process comprises a pluralityof exhaust collection pipelines, an air cooler and an emergency relief groove; one ends of the exhaust collection pipelines are separately connected with emergency relief openings of safety valves / safety valve assemblies of different towers / kettles in a coking system, the other ends of the exhaust collection pipelines are connected with a gas phase inlet of the air cooler, and a liquid phase outlet of the air cooler is connected with the emergency relief groove through a first condensed liquid conveying pipeline. According to the safety valve emergency blow-down system in the coking productionprocess, the gas phase emergently relieved by the different tower and kettle safety valves can be recycled through the air cooler, the environment is protected, products are recycled, the technologyis simple, the arrangement is convenient, and an optimal path for solving the types of problems is achieved.

Description

technical field [0001] The invention relates to the technical field of coking production, in particular to an emergency venting system of a safety valve in a coking production process. Background technique [0002] At present, the metallurgical coking industry has higher and higher requirements for safety and environmental protection, and various regulations have been issued one after another. Among them, "Pressure Pipeline Specification for Industrial Pipelines": GB / T20801-2006 Part 6 Safety Protection Section stipulates: "Due to cooling water or The gas phase pipeline at the top of the distillation column where the reflux is interrupted or the overpressure is caused by the excessive heat input to the reboiler shall be equipped with a safety relief device. All gas pipelines are equipped with safety valves. [0003] In the petrochemical industry, the emergency release steam released by the above-mentioned safety valve is generally sent to the torch tower to be burned. The ...

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Problems solved by technology

[0003] In the petrochemical industry, the emergency vent steam released by the above-mentioned safety valves is generally sent to the flare tower for burning, while in the metallurgical coking industry, especially the tar processing and its deep processing equipment, due to the particularity of the steam fraction, that is, steam condensation The liquid has the characteristics of high viscosity and easy crystallization of the distillate, and it is difficult to transmit it over a long distance. Therefore, basically no torch tower is installed. Even if it is burned by a torch, it will pollute the environment due to incomplete combustion and fail to meet environmental protection requirements.

Therefore, in the existing tar processing and deep processing devices, such as: tar processing unit (generally 4 towers), industrial naphthalene unit (generally 2 towers), modified asphalt unit (generally 2 kettles), Washing oil finishing unit (generally set up 5 towers), refined phenol unit (generally set up 6 towers), the venting of this kind of safety valve is directly discharged into the atmosphere, although the safety problem has been solved, but the environmental protection problem still exists , once these safety valves are released, it will bring serious harm to the environment, which is an environmental hazard and should be given sufficient attention

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