A utility boiler waste heat utilization system with auxiliary heating equipment

Abstract

The invention provides a utility boiler heat supply system with auxiliary heating equipment. The utility boiler heat supply system includes a boiler, a main flue, a bypass flue and a heat exchanger, wherein flue gas generated by the boiler enters the heat exchanger through the inlet of the bypass flue; flue gas subjected to heat exchange flows to the main flue through the outlet of the bypass flue and is then discharged; the heat exchanger is connected with a radiator, being a heat supply radiator; heat is transmitted to water of the radiator through flue gas in the heat exchanger, so that waste heat is utilized for heat supply; the auxiliary heating equipment is arranged on an inlet pipeline of the radiator, and is used for heating water entering the radiator. The automatic heating equipment provided by the invention can be used for automatically adjusting the heating power according to the utilization condition of waste heat, so that the heat supply effect is guaranteed, energy is saved, and intelligent adjustment of the system is realized.

Description

technical field [0001] The invention belongs to the field of steam boilers, in particular to the field of waste heat utilization of steam boilers. Background technique [0002] With the rapid development of my country's economy, energy consumption is increasing day by day, and the problem of deteriorating urban air quality is becoming more and more prominent. It is urgent to save energy and reduce the emission of harmful environmental substances. In the common steam generation process, one of the main reasons for high energy consumption and serious pollution is that the exhaust temperature of boiler flue gas is too high, which wastes a lot of energy. Therefore, the waste heat of boiler exhaust gas is recovered and reused to achieve energy saving and emission reduction. purpose, while protecting the environment. However, in the prior art, low-temperature corrosion may occur while satisfying the residual heat of the flue gas, so how to avoid low-temperature corrosion is an im...

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Problems solved by technology

However, in the prior art, low-temperature corrosion may occur while satisfying the residual heat of the flue gas, so how to avoid low-temperature corrosion is an important issue. At the same time, if only to avoid low-temperature corrosion, the waste heat in the flue gas is wasted Too much, leading to the problem of poor utilization of waste heat, so the above-mentioned related problems need to be solved urgently

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