A denitrification high-temperature flue rod fixing structure

Abstract

The present invention provides a denitrification high-temperature flue rod fixing structure, which is arranged outside the non-metallic expansion joint connecting the denitrification reactor and the inlet flue. The inlet flue includes a vertical section flue at the bottom and a horizontal section at the top The flue includes: two sets of tie rod assemblies arranged symmetrically on both sides of the denitrification reactor and the inlet flue. The second tie rod fixing part, the two ends are respectively connected to the tie rods of the two tie rod fixing parts through shear bolts; one of the shear bolts and the intersection line of the vertical bisector of the flue in the vertical section and the horizontal bisector of the flue in the horizontal section are the same axis, another shear bolt and the intersection line of the horizontal bisector of the flue in the horizontal section and the vertical bisector of the leg of the denitrification reactor near the inlet flue are coaxial. The support problem of the denitrification flue before the inlet of the denitrification reactor can be solved without separately designing the steel structure frame beam.

Description

technical field [0001] The invention relates to the technical field of flue gas denitration, in particular to a denitration high temperature flue tie rod fixing structure. Background technique [0002] In the SCR method flue gas denitrification equipment of the power station using the vertical airflow method, the inlet flue of the denitration reactor is generally a vertical flue, which is generally made of steel structure. It is usually connected with the reactor by a non-metallic expansion joint. The temperature of the denitration flue is generally above 300 °C, and the expansion joint can absorb the thermal displacement of the high-temperature flue due to temperature changes. But at the same time, the force will also change, and the biggest influence is the internal pressure thrust of the expansion joint. In order to overcome the force of this part, an external force must be overcome to ensure the stability of the flue. The internal pressure thrust of the expansion join...

AI Technical Summary

Problems solved by technology

For this reason, it is necessary to design and install an independent guide bracket to support the vertical flue at the entrance, so as to ensure the stability of the flue while bearing the horizontal thrust of the internal pressure of the non-metallic expansion joint 200. At the same time, in order to support the guide bracket, the span of the fixed bracket at the bottom It is also necessary to completely cover the inlet flue and the denitrification reactor. This will not only increase the structural load, but also increase the amount of work, resulting in increased investment and increased construction period.

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