An antifreeze device and method for outdoor integrated pipe racks and pipelines for wet desulfurization

Abstract

The invention discloses an antifreeze device and method for pipelines of an outdoor comprehensive pipe rack for wet desulfurization. The device includes a comprehensive pipe rack connected between a wall and a steel column, and the pipelines are laid side by side on the comprehensive pipe rack; the steel column is along the pipe The laying direction is set, and there is a gap between the pipe and the interval between the steel column and the pipeline to form a maintenance channel; between the steel columns, between the upper end of the steel column and the upper end of the wall, and between the wall and the steel column under the integrated pipe rack The rooms are connected by color steel plates to form a sealed space; heating pipes are laid on the walls inside the sealed space, and lighting and ventilation facilities are arranged inside the sealed space, and a method for making the device is also included. The beneficial effects of the present invention are as follows: by using steel structure and color steel plate to seal the desulfurization outdoor comprehensive pipe frame, after sealing, heating air is introduced into the sealed space, the outdoor pipes are prevented from freezing by means of heating, and lighting is added in the sealed space And ventilation facilities, adding maintenance channels for easy pipeline maintenance.

Description

technical field [0001] The invention relates to the technical field of wet desulfurization, in particular to an anti-freezing device and method for outdoor integrated pipe racks for wet desulfurization. Background technique [0002] Wet desulfurization has the characteristics of high energy consumption, large floor area, complex system, huge equipment, and many outdoor pipelines. In northern China, the outdoor temperature is low in winter, and outdoor pipelines must be protected from cold and frost, otherwise the pipelines will freeze and affect the safe and stable operation of the system. The outdoor pipelines in northern my country basically use electric heating to prevent freezing. First, electric heating cables are laid on the outdoor pipelines, and then aluminum silicate insulation materials are used to wrap the pipes and electric heating to prevent heat loss caused by electric heating. Finally, use The thermal insulation aluminum plate protects the thermal insulation m...

AI Technical Summary

Problems solved by technology

[0003] 1. Low safety and stability, electric heating cables are prone to aging and brittleness, and the service life is generally 3 to 5 years. After the electric heating cable is damaged, the pipeline will freeze and affect the safe and stable operation of the system

[0004] 2. The production cost is high. The power of electric heat tracing for desulfurization outdoor pipes is about 300KW, and the power consumption per day is 7200 degrees. The heating cycle in the north is 6 months, and the electricity cost is 0.25 yuan / degree. Yes: 324,000 yuan

The service life of electric heat tracing is generally 3 to 5 years. The average annual cost of replacing electric heat tracing and heat preservation in the desulfurization area is about 100,000 yuan

[0005] 3. The amount of maintenance is large. The outdoor integrated pipe rack pipes are generally tens of meters long. After the electric heat tracing is damaged, all the insulation and insulation outer guards on the entire pipe must be removed before replacement. In winter, the electric heat tracing efficiency of outdoor replacement is cold. Low, long replacement time, the pipeline will freeze seriously, which will cause non-stop of the unit or environmental protection exceeding the standard incident

[0006] 4. Defects are not easy to be found. The outdoor integrated pipe rack pipes are all suspended, and whether the electric heat tracing is normal cannot be found in time.

[0007] 5. Inspection and maintenance are inconvenient and safety risks are high. The pipes of the outdoor comprehensive pipe rack are all suspended in the air. Scaffolding needs to be erected for each inspection, and each inspection operation is a high-altitude operation; Safety accidents are prone to occur when maintenance personnel replace pipes

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