High-temperature high-pressure rear pass coal economizer mounting structure of coal power station

Abstract

The invention discloses a high-temperature high-pressure rear pass coal economizer mounting structure of a coal power station. The high-temperature high-pressure rear pass coal economizer mounting structure comprises a heat exchange flue and a coal economizer hung in the heat exchange flue. The coal economizer is a heat exchange tube panel comprising a plurality of rows of communicated heat exchange tubes, the heat exchange tube panel is provided with a water inlet and a water outlet which are in fit connection with a water inlet header pipe and a water outlet header pipe respectively, shake-proof fixing plates in fit connection with the heat exchange tube are arranged on the side faces of the heat exchange tube panel, and fit shake-proof fixing mechanisms are arranged on the inner sidewalls of the heat exchange flue and are in fit connection with the shake-proof fixing plates. The high-temperature high-pressure rear pass coal economizer mounting structure of the coal power station hasthe advantages that the coal economizer can be mounted, inspected and repaired conveniently through hanging connection, and accordingly the structure is flexible to adjust; with the aid of the shake-proof structure, the coal economizer can be less prone to shaking and more reliable in structural stability, and damage caused by other external factors including earthquakes can be reduced.

Description

technical field [0001] The invention relates to the field of flue waste heat recovery, in particular to an installation structure of a high-temperature and high-pressure rear flue economizer in a power station. Background technique [0002] With the strict requirements of national energy conservation and emission reduction targets and the rising and fluctuating coal price, the cost of coal-based power generation is increasing day by day, and each power plant is facing enormous pressure for energy saving. And if the flue gas temperature at the outlet of the economizer cannot meet the minimum continuous operating temperature of normal denitrification, it will have a great impact on the subsequent treatment. Therefore, in order to effectively reduce the exhaust gas temperature of the boiler and improve the efficiency of subsequent treatment and operation economy, it is widely used in the industry to install an economizer on the exhaust flue of the boiler. [0003] Most economi...

AI Technical Summary

Problems solved by technology

[0006] First, the fixed support installation of the economizer is not conducive to its early installation and later maintenance, and the flexibility of adjustment is poor;

[0007] Second, the hoisting structure of the economizer has poor stability and balance. It is easy to shake during use or affected by external factors, and cause safety hazards

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