Device for absorbing and separating oil fouling of biomass boiler

Abstract

The invention discloses a device for absorbing and separating oil fouling of a biomass boiler. The device comprises an oil fouling separation pipe body; the oil fouling separation pipe body is formed by a flue gas inlet pipe section, an oil fouling separation pipe section and a flue gas outlet pipe section which are sequentially communicated; the flue gas inlet pipe section is set into a horn shape, and the pipe diameter of the flue gas inlet pipe section is gradually increased along the forwarding direction of flue gas; the flue gas outlet pipe section is set into a horn shape, and the pipe diameter of the flue gas outlet pipe section is gradually decreased along the forwarding direction of the flue gas; the outer side wall of the oil fouling separation pipe section is evenly provided with a plurality of spray pipes; nozzles of the spray pipes extend into the oil fouling separation pipe section; the spray pipes are communicated with a storage tank at the same time, and oil fouling absorption powder is contained in the storage tank; the bottom surface of the oil fouling separation pipe section is arranged in a manner of gradually inclining towards the lower left side or lower right side along the forwarding direction of the flue gas; the lower end of the bottom surface has an ash discharge hole; an ash discharge valve used for opening and closing the ash discharge hole is arranged at the ash discharge hole. The device is capable of effectively separating and removing the oil fouling in the dust-containing flue gas.

Description

technical field [0001] The invention relates to a biomass boiler oil pollution adsorption and separation device. Background technique [0002] Boilers that use biomass energy such as agricultural, forestry and industrial waste, and urban waste as fuel are called biomass boilers. At present, biomass direct-fired boilers include biomass boilers. Biomass boilers pass through the smoke inlet pipe and the cyclone pre-dust collector. The air inlet of the cyclone pre-dust collector is connected with the air inlet of the bag filter, and the air outlet of the bag filter is connected with the smoke outlet pipe. The disadvantage of this kind of biomass direct-fired boiler is that the flue gas produced by the biomass energy after burning in the biomass boiler contains oil pollution. Since the temperature in the biomass boiler is about 1000°C, the oil pollution in the flue gas will Under conditions, it exists in the form of gaseous oil. When the oil in the flue gas is discharged from th...

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Problems solved by technology

The disadvantage of this kind of biomass direct-fired boiler is that the flue gas generated after the biomass energy is burned in the biomass boiler contains oil pollution. Since the temperature in the biomass boiler is about 1000°C, the oil pollution in the flue gas will Under conditions, it exists in the form of gaseous oil. When the oil in the flue gas is discharged from the biomass boiler into the flue gas inlet pipe, because the temperature of the flue gas inlet pipe is 240-280 ° C, the oil in the flue gas will condense into liquid droplets. , when the liquid oil follows the flue gas in the process of moving in the smoke inlet pipe, a part of the oil dirt is easy to accumulate and stay in the smoke inlet pipe to form an oil stain layer. The thickest oil stain layer can be up to 20cm thick. After the operation, the oil pollution cleaning of the smoke inlet pipe is carried out, which is not only time-consuming and manpower-consuming, but also has low work efficiency; while another part of the liquid oil pollution enters the bag filter through the smoke inlet pipe and the cyclone pre-dust collector following the flue gas, and when the bag dust collector When the filter bag in the filter filters the oily flue gas, the oil will easily block the filter holes on the surface of the filter bag and cause the bag to stick, which will make the filter bag lose its filtering effect and reduce the working efficiency of the bag filter.

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