Energy-saving and environment-friendly boiler tail gas discharge tower

Abstract

The invention discloses an energy-saving environment-friendly boiler tail gas exhaust tower which comprises an exhaust tower body. The middle of the bottom of the exhaust tower body is provided with a tail gas inflow flue and a tail gas heat recycling device; one end of the tail gas inflow flue is communicated with a boiler room tail gas exhaust pipeline, and the other end of the tail gas inflow flue is in contact with the surface of the tail gas heat recycling device; the periphery of the bottom of the exhaust tower body is provided with outdoor cold air inlets; cold air entering the outdoor cold air inlets and boiler tail gas treated through the tail gas heat recycling device are led to a colliding cavity in the middle of the exhaust tower body; the top of the exhaust tower body is provided with two S-shaped exhaust flues distributed from the middle to the two sides, and the two sides of the top pf the exhaust tower body are provided with mixed tail gas outlets; the inlet ends of the S-shaped exhaust flues are communicated with the colliding cavity in the middle, and the outlet ends of the S-shaped exhaust flues are communicated with the mixed tail gas outlets; absorbing baffles used for absorbing solid particles are laid on the flue walls of the S-shaped exhaust flues.

Description

technical field [0001] The invention relates to the field of thermal equipment manufacturing, in particular to an energy-saving and environment-friendly boiler tail gas discharge tower. Background technique [0002] In daily production, gas boilers have a wide range of applications, and are suitable for industrial drying applications, large commercial buildings or heating in civil buildings. [0003] The general temperature of gas boiler tail gas can reach about 150 ℃, and there is waste heat that can be recycled. At present, there have been researches on waste heat recovery of boiler tail gas at home and abroad, and some products have been produced. Such as figure 1 The schematic diagram of the structure comparison of two kinds of boiler tail gas waste heat devices in the prior art is shown. A is a schematic diagram of a general exhaust gas waste heat recovery device; B is a schematic diagram of exhaust waste heat recovery installed. After the tail gas heat exchanger is i...

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Problems solved by technology

However, the existing tail gas heat exchanger products are all installed in the boiler room, generally close to the boiler tail gas outlet, focusing on how to reduce the exhaust temperature of the boiler tail gas and recover waste heat as much as possible

[0004] But the above figure 1 However, the system architecture shown by B in the prior art has the following objective technical defects: the existing tail gas heat exchanger products mainly have several problems: (1) single function: pay attention to how to reduce the discharge temperature of boiler tail gas, Focus on the recovery of heat, while ignoring the impact of pollutants in the exhaust gas at the outlet of the boiler exhaust chimney on the environment. After using the existing device, only a single function of waste heat utilization can be realized

[0005] (2) The system architecture shown in B is more difficult to install: Boiler exhaust heat recovery is an energy-saving technology that has only been valued in recent years. There are a large number of boilers in use in China and few exhaust heat recovery devices are installed. Existing equipment and technology are used to implement The waste heat recovery and utilization of boiler tail gas generally inevitably involves the secondary transformation of the boiler room tail gas discharge system and other heating systems, which is difficult to construct and high in cost; even for a newly built boiler tail gas discharge system, it is necessary to use Exhaust gas heat exchange device, because the above-mentioned boiler exhaust heat recovery device is only limited to be installed in the boiler room, and there are many equipment and pipelines in the installation site, so the installation is difficult

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