Flexible flare line system based on expansion joint compensation

Abstract

The invention relates to a flexible flare line system based on expansion joint compensation. The system comprises a flare main pipe, a reaction device and a delivery flask by overhead laying. The reaction device and the delivery flask are connected to the flare main pipe, and the flare main pipe is composed of a straight pipe section and a turned pipe section. The system also comprises an anti-explosion straight-through type external pressure straight pipe pressure balance expansion joint and a universal hinge pull rod compound expansion joint. The anti-explosion straight-through type externalpressure straight pipe pressure balance expansion joint is used for flexible compensation of the straight pipe section and the universal hinge pull rod compound expansion joint is used for flexible compensation of the turned pipe section. The system solves an arrangement design problem of a flare line of a large energy source chemical device, improves the safe reliability of the flare line and lowers the investment, and the economical efficiency of the flare line system is improved by over 30%.

Description

technical field [0001] The invention relates to a flexible compensation technology for a flare pipeline of an energy chemical device, in particular to a flexible flare pipeline system based on expansion joint compensation. Background technique [0002] The composition of the flare system usually consists of four parts: the flare gas separator tank, the flare gas water seal tank, the flare, and the flare pipeline. The main function of the flare system is to collect the flammable and toxic gases emitted by the energy and chemical production equipment under normal production, start / stop and accident conditions through the flare facilities and burn them safely to ensure the safety of the equipment and reduce gas emissions pollution of the atmospheric environment. The pipeline network of the flare system is the basis for the safe operation of the discharge device, that is, the flare pipeline is the last line of defense for energy and chemical equipment, and its safety and reliab...

AI Technical Summary

Problems solved by technology

With the implementation of multiple national "refining and chemical integration" base plans, petrochemical and post-derivative production facilities such as petrochemical and coal chemical industries are more characterized by expanded production scale, joint construction and joint production, and centralized supply of public works. The diameter of the torch pipeline It is getting bigger and bigger, and the maximum diameter reaches φ3m. Due to the large diameter of the pipeline, the lateral extension of the Π-shaped bend compensation usually reaches about 100-120 meters, which not only consumes a lot of raw materials economically, but also It occupies a large amount of land, and at the same time, it needs to use a large number of steel structure supports to restrain the shrinkage and deformation of the pipeline, and the investment cost is high; in terms of safety and stability, such as figure 1 As shown, if the Π-shaped bend compensation is used, the pressure drop of the pipeline is large, there are many parts with high stress in the pipeline, the force on the bracket is large, and the flexibility and reliability of the pipeline are low.

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