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System for deep utilization of low-temperature discharged smoke from gas-fired boiler and control method thereof

A control method and technology for gas boilers, applied in air heaters, lighting and heating equipment, fluid heaters, etc., can solve problems such as only reaching 55 °C, reduce emissions, improve heat exchange efficiency, important social economy and The effect of environmental benefits

Active Publication Date: 2013-12-11
BEIJING KINGFORE HV & ENERGY CONSERVATION TECH CORP
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AI Technical Summary

Problems solved by technology

It can be seen that only using the flue gas waste heat recovery and utilization device to reduce the flue gas temperature is greatly affected by the heated medium, and the effect can only reach 55°C, and the condensed water precipitated in the flue gas is very little

Method used

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  • System for deep utilization of low-temperature discharged smoke from gas-fired boiler and control method thereof

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Embodiment Construction

[0023] The following drawings are used to illustrate the present invention, but not to limit the scope of the present invention.

[0024] figure 1 It is a schematic diagram of the gas-fired boiler low-temperature exhaust gas depth utilization system and its control method of the present invention. As shown in the figure, the system mainly includes a gas-fired boiler 1. The temperature of the boiler exhaust gas is relatively high, and the sensible heat and latent heat contained are relatively large; the waste heat of the flue gas Recycling device 2 recovers the heat in the flue gas through gas-water heat exchange and heats low-temperature water; the flue gas source heat pump (including compressor 3, evaporator 4, condenser 5 and expansion valve 6) generates waste heat from the flue gas Based on the heat absorption of the recycling device, the refrigerant in the evaporator absorbs the low-temperature heat in the flue gas, and transfers the heat to the low-temperature water throu...

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Abstract

The invention relates to a system for the deep utilization of low-temperature discharged smoke from a gas-fired boiler and a control method thereof. The system for the deep utilization of the low-temperature discharged smoke from the gas-fired boiler comprises a gas-fired boiler, a smoke waste heat recovery utilization device, a smoke source heat pump, an automatic dosing system, an automatic water supplement system, a data collection system and a centralized monitoring system. The invention further discloses the control method corresponding to the system for the deep utilization of the low-temperature discharged smoke from the gas-fired boiler. According to the system for the deep utilization of the low-temperature discharged smoke from the gas-fired boiler, the smoke waste heat recovery utilization device is combined with the smoke source heat pump to be applied in the gas-fired boiler, the sensible heat and most of latent heat in the high temperature smoke can be sufficiently recovered, the gas use ratio is improved, smoke condensate water can be recovered and used after dosing processing, the condensate water can purify harmful gas in the smoke in the separation process, and the energy-saving, water-saving and environment-friendly comprehensive effects are finally achieved.

Description

technical field [0001] The invention relates to a gas boiler low-temperature smoke exhaust depth utilization system and its control method, in particular to a system that can operate a flue gas waste heat recovery and utilization device in conjunction with a flue gas source heat pump according to the energy-saving potential of the boiler flue gas waste heat. The control method realizes the recovery and utilization of flue gas waste heat and condensed water, and achieves an energy-saving and water-saving operation mode. The invention is applicable to the deep recovery and utilization of flue gas waste heat of gas boilers, oil-fired boilers, direct-fired engines and industrial gas combustion equipment. Background technique [0002] my country's energy structure is transitioning to clean and low-carbon, and natural gas energy-using equipment is developing rapidly, but the efficient use of gas has gradually become an important topic of energy conservation today. At present, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02F24H8/00F24H9/20
CPCY02B30/00
Inventor 丁琦张春蕾穆连波
Owner BEIJING KINGFORE HV & ENERGY CONSERVATION TECH CORP
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