Boiler discharge flue waste heat recovery device and boiler discharge flue waste heat recovery method

Abstract

The invention discloses a boiler discharge flue waste heat recovery device and a boiler discharge flue waste heat recovery method. The device comprises a first mounting frame and a second mounting frame, wherein the first mounting frame and the second mounting frame are arranged side by side, a boiler is fixedly connected to the interior of the first mounting frame, the upper surface of the secondmounting frame is fixedly connected with a first fan, a material inlet pipe is fixedly connected to the bottom of the side surface of the boiler, a rotating door is hinged to the bottom end of the front surface of the boiler through a hinge, the gas inlet of a first fan is fixedly connected with the boiler, and the gas outlet of the first fan is fixedly connected with a waste heat recovery pipe.The invention relates to the technical field of boiler equipment. According to the invention, heat in flue gas is recovered through the waste heat recovery pipe, the flow speed of the flue gas in thepipeline can be reduced through the speed reduction box, and the flue gas can rotate in the pipeline through the spiral groove, so that the contact area and the contact time of the flue gas and the pipeline can be increased.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to a boiler exhaust waste heat recovery device and recovery method. Background technique [0002] The boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electric energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The hot water or steam generated in the boiler can directly provide heat energy. It can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. The boiler that provides hot water is called a hot water boiler. It is mainly used in daily life, and there are also a small amount of applications in industrial production. Steam boilers, often referred to as boilers for short, are mostly used in thermal power stations, ships, locomotives and industrial and mining enterprises....

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a boiler exhaust heat recovery device and recovery method, which solves the problem that the existing boiler exhaust heat recovery device has a complex structure and low heat recovery efficiency. When the gas is discharged, its flow speed is fast, resulting in a short residence time of the flue gas in the limited heat transfer path, the flue gas cannot fully contact the heat recovery device, and the unburned particles in the flue gas cannot be effectively recovered, resulting in energy consumption growing problem

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