Device for effectively demisting tail gas from alcohol-based fuel boiler and utilizing heat energy

Abstract

The invention discloses a device for effectively demisting tail gas from an alcohol-based fuel boiler and utilizing heat energy. The device is characterized in that tail gas treatment units of the device comprise finned tube water tanks and heat exchange barrels, smoke inlets and smoke outlets are formed in the heat exchange barrels, the multiple finned tube water tanks are arranged in the heat exchange barrels, water outlets of the finned tube water tanks are serially connected and communicated with water inlets, the water inlets of the first finned tube water tanks are communicated with cold water tubes externally extending into the heat exchange barrels, and the water outlets of the last finned tube water tanks are communicated with hot water outlet tubes extending out of the heat exchange barrels; the smoke inlets of the tail gas treatment units are communicated with an outlet of a flue of the alcohol-based fuel boiler, or the smoke outlets of the multiple tail gas treatment units are serially connected and communicated with one another and then are communicated with the outlet of the flue of the alcohol-based fuel boiler. The device has the advantages that the heat energy in the tail gas can be efficiently utilized, tap water and the tail gas can be reversely emitted to be subjected to heat exchange, accordingly, the temperature of the tail gas can be reduced and is lower than the ambient air temperature, and water mist in the tail gas can be removed.

Description

technical field [0001] The invention relates to a tail gas treatment facility, in particular to an effective defogging and heat energy utilization device for alcohol-based fuel boiler tail gas. Background technique [0002] In China, a large number of small and medium-sized industrial boilers are used, but due to the combustion and heating of traditional fuels (such as coal, firewood, diesel, natural gas, etc.), the combustion tail gas treatment equipment mostly uses washing liquid cleaning and fine dust filtration. None of the means can reuse the heat in the exhaust gas, resulting in a waste of energy. [0003] Clean alcohol-based fuels are easy to completely decompose and burn, and the emission products are water vapor and carbon dioxide. Therefore, clean alcohol-based fuels are used in industrial and civil (heating, bathing, etc.) fields as a substitute for coal, fuel oil, and gas. The carbon emission target is of great significance. [0004] The boiler heated by burnin...

AI Technical Summary

Problems solved by technology

However, the high-temperature tail gas produced by fuel combustion (generally, the temperature of the tail gas discharged from the boiler is greater than 150°C) will take away a considerable part of the heat and cause energy waste. The discharge of water mist will affect the appearance of the environment

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