Conduction oil bypass pipeline forced circulation system

Abstract

A conduction oil bypass pipeline forced circulation system relates to the technical field of road asphalt production and processing. The outlet end of a conduction oil furnace is connected with the inlet end of a rubber asphalt reaction kettle sequentially through a main pipeline circulating pump and a main pipeline stop valve, and the outlet end of the rubber asphalt reaction kettle is connectedwith the inlet end of the conduction oil furnace through a conduction oil return pipeline. The main pipeline circulating pump is further connected with a main pipeline circulating pump motor, the twoends of the main pipeline stop valve are further connected with a bypass gate valve and a bypass stop valve through a first three-way pipe fitting and a second three-way pipe fitting respectively, thetwo ends of the bypass stop valve are connected with a bypass forced circulating pump through stainless steel pipes, and the bypass forced circulating pump is connected with a bypass forced circulating pump motor. By means of the bypass forced circulation pump, the circulation flow speed of heat conduction oil in an oil conveying pipeline is increased, the heat conduction efficiency is improved,the reaction speed of the rubber asphalt reaction kettle is increased, deposition of carbon scale is prevented, and the purposes of improving quality and efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of road construction asphalt production and processing, in particular to a heat transfer oil bypass pipeline forced circulation system. Background technique [0002] At present, in the process of asphalt production and processing in road construction enterprises, heat transfer oil is widely used as a heat carrier in the asphalt hot-melt process, and its application is more common than traditional steam hot-melt. Heat transfer oil is characterized by high temperature, boiling point greater than 300°C, good thermal stability, low pipeline pressure, high safety factor, and has the advantages of economy, environmental protection and high efficiency. [0003] In the actual production process, the heat transfer oil also has some shortcomings. When the heat transfer oil participates in the pyrolysis reaction, the polymerization reaction between the oligomers occurs to form insoluble high-polymer carbon scale that a...

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Problems solved by technology

[0003] In the actual production process, the heat transfer oil also has some shortcomings. When the heat transfer oil participates in the pyrolysis reaction, the polymerization reaction between the oligomers will generate insoluble high-polymer carbon scale that adheres to the wall of the heat transfer oil pipe, which is easy to block the pipe.

Especially in cold areas with low temperature, when the viscosity of the heat transfer oil is greater than 20%, the circulation velocity of the heat transfer oil in the pipeline slows down, which seriously affects the heat transfer efficiency

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