Smoke and wind simulation heat exchange device

Abstract

The invention relates to a flue gas and air simulated heat exchange device. The flue gas and air simulated heat exchange device is characterized by comprising a flue system, a coal-fired system, a dust feeding system, a heat exchange circulating system, a recovery system, a flue gas exhaust system and a data acquiring and monitoring system. On the one hand, the flue gas and air simulated heat exchange device is reasonable in structure and real in simulation and can provide a test platform for different types of heat exchangers, the flue gas and air simulated heat exchange device can be used as a heat exchanger performance evaluation platform by heat exchanger research and development enterprises and users using heat exchangers from multiple industries of electric power, petroleum, chemical engineering, metallurgy and the like and can be used for evaluating the heat exchange capacity, the scale prevention capacity, the corrosion resistance and the like of heat exchangers, meanwhile, the development period of a heat exchanger in the flue gas and air system is shortened, and diversified test manners are provided; on the other hand, influences of corrosion can be effectively reduced through research on novel heat exchangers, equipment loss is greatly reduced, and a basic research scheme and data are provided for large-scale application of the device, energy conservation, emission reduction and better flue gas waste heat utilization.

Description

technical field [0001] The invention relates to the technical field of flue gas waste heat recovery and utilization, and relates to a flue gas simulation heat exchange device. Background technique [0002] With the aggravation of energy crisis and environmental crisis, energy conservation and emission reduction has become a basic national policy of our country. As one of the main industries that consume primary energy, thermal power plants will generate various forms of waste heat after boiler combustion for heating, condensation and other energy conversion processes, such as exhaust gas temperature, boiler blowdown, steam turbine exhaust, etc., in waste heat resource recovery Utilization has great potential for energy saving. At present, boiler exhaust gas is a waste heat resource with great potential. The exhaust gas temperature is generally 120°C-140°C, which not only wastes a lot of heat resources, but also causes serious environmental thermal pollution. If the waste h...

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Problems solved by technology

China Utility Model Patent Publication (Announcement) No. CN201772812U discloses "a corrosion-resistant plastic heat exchanger", which uses heat-conducting plastic finned tubes as a new type of heat transfer tube for heat exchangers, which has corrosion resistance, anti-fouling, light weight, It has the advantages of easy forming and convenient processing, but it is not easy to be used for fluid heat exchange with solid particles and impurities, it is not easy to clean, the cost of a single heat exchanger is high, and the heat exchangers cannot be stacked for installation and use; literature [Zhang Jianfu, Zhao Qinxin, etc. Parameter optimization analysis of flue gas waste heat recovery device[J]. Chinese Journal of Power Engineering, 2010, 30(9)] proposed "using flue gas deep cooler technology to recover flue gas waste heat", which can realize ash accumulation and sulfuric acid vapor condensation The process is effectively separated, but the flue gas cooler is arranged between the electrostatic precipitator and the desulfurization tower, which may easily cause dust blocking or corrosion of the precipitator. In severe cases, maintenance is required, which may affect the operation of the entire unit

Moreover, the flue gas cooler cannot be disassembled, and it is not convenient to install other types of heat exchangers. This system has little utility value and cannot provide a test platform for studying different types of heat exchangers.

[0004] At present, the research on the performance of the heat exchanger in the flue gas system still lacks the necessary research platform. The various parameters and use effects of the heat exchanger can only be monitored and analyzed in the actual environment. This situation has caused the following dilemma: (1) The research and development cycle and test cost of the heat exchanger are greatly increased; (2) Since the site is generally in direct production and operation, there are great constraints on the arrangement of the test, and even some tests cannot be completed; (3) Some destructive tests will Significant impact on production operations, clearly not possible in the field

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