Internal flue gas baffle device of horizontal waste heat boiler

Abstract

The invention discloses a flue gas baffle device inside a horizontal waste heat boiler, and aims to solve a 'flue gas corridor' problem caused by short circuit of flue gas of the horizontal waste heat boiler. The flue gas baffle device inside the horizontal waste heat boiler comprises multiple rows of heated surface tube bundles arranged inside a flue, wherein the two ends of each row of the heated surface tube bundle are connected with corresponding headers; a plurality of inter-tube baffles are arranged inside the flue; each inter-tube baffle is parallel to the extending direction of the flue; a plurality of tube holes are formed in each inter-tube baffle; each heated surface tube bundle vertically penetrates through the corresponding tube holes and is fixed with the inter-tube baffles through sleeves; and side wing baffles are arranged between the heated surface tube bundles and the inner wall of the flue. The flue gas baffle device inside the horizontal waste heat boiler achieves uniform distribution of the flue gas in the flue and sufficient scouring of the flue gas to the heated surface tube bundles, so that the heat exchange efficiency of the boiler is improved, and the safe and stable running of the boiler is ensured.

Description

technical field [0001] The invention relates to the technical field of thermal energy engineering application, in particular to a flue gas baffle device for restricting flue gas flow inside a horizontal waste heat boiler. Background technique [0002] In the flue of the main body of the horizontal waste heat boiler, since there are gaps between the upper and lower ends of the tube bundle on the heating surface and the inner wall of the tube bundle and the flue, it is necessary to install a flue gas baffle device to prevent the short circuit of the flue gas from forming a "flue gas corridor", so that the flue gas can flow freely The uniform distribution in the flue and the full flushing of the tube bundles on the heating surface improve the heat exchange efficiency of the boiler and ensure the safe and stable operation of the boiler. [0003] In actual operation, since the flue gas baffle cannot be cooled by the water in the pipe like the heating surface tube bundle in the fl...

AI Technical Summary

Problems solved by technology

If the design of the internal flue gas baffle device of the horizontal waste heat boiler is unreasonable, it is easy to deform after being heated during operation, especially in the area of ​​high temperature and large expansion, which will not be conducive to restricting the internal flue gas flow of the waste heat boiler and realizing The flue gas fully scours the tube bundles on the heating surface, which eventually leads to a decrease in the heat transfer efficiency of the boiler

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