Self-control type energy-efficient heat tracing system

Abstract

The invention discloses a self-control type energy-efficient heat tracing system and belongs to the fields of petroleum refining, petrochemical engineering and petroleum storage and transport. According to the heat tracing system, steam serves as a heat tracing medium. A control system is arranged in a steam heat tracing system. The self-control type energy-efficient heat tracing system comprises the steam heat tracing system and a blowing and sweeping air system. The blowing and sweeping air system and the steam heat tracing system are interlocked through a control unit when a petroleum refining and chemical engineering device or a petroleum storage and transport system is operated, so that servo operation of use/cutting of the steam heat tracing system and the operation state/shut-down state of the petroleum refining and chemical engineering device or the petroleum storage and transport system is achieved. An existing continuous inflow steam heat tracing mode is improved into a self-control intermittent feeding type steam heat tracing mode, system operation is good, intelligent control over the steam heat tracing system in the operation state of the petroleum refining and chemical engineering device or the petroleum storage and transport system is achieved, steam is reasonably and intermittently used, it is guaranteed that the temperature of the medium is lower than the temperature of the heat tracing steam, and waste of energy and consumption of water resources are effectively reduced.

Description

technical field [0001] The invention relates to the fields of petroleum refining, petrochemical industry and petroleum storage and transportation, in particular to a self-controlled high-efficiency energy-saving heat tracing system. Background technique [0002] In production practice, some condensable media, such as crude oil and heavy oil, may even solidify and affect production due to the gradual decrease in temperature and increase in viscosity during pipeline transportation. Therefore, when transporting this kind of medium, insulation measures must be taken, such as adding steam and other accompanying pipes near the material pipeline to maintain a certain temperature of the material. Wrapping steam pipes or hot water pipes and oil pipes in the same insulation shell is called heat tracing. [0003] In cold areas or devices with high freezing point oil or other fluid materials, steam tracing pipes are usually buried in the heat-insulated pipes, and steam at 0.3MPa ~ 1.0M...

AI Technical Summary

Problems solved by technology

However, in the normal production process, the temperature of the medium in the material pipeline of most buried steam tracing pipelines is much higher than its freezing point so as not to lose fluidity, such as atmospheric residual oil, vacuum residual oil, vacuum wax Oil, etc.; the temperature of the medium in the pipeline or pipe section of some oil refining and chemical equipment or petroleum storage and transportation system is even higher than the temperature of the heating steam, such as catalytic cycle oil slurry, etc., making the heating steam become a cold medium for heat extraction, continuously The use of steam results in waste of energy and consumption of water resources

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