Integrated dedusting method of inside-row and outside-row exhaust gas in metallurgical furnace with liquid storage tank

Abstract

An integrated dedusting method of an inside-row and outside-row exhaust gas in a metallurgical furnace with a liquid storage tank is characterized in that inside-row exhaust gas in the metallurgical furnace is exhausted from a fourth hole, is mixed with cold draft through a water-cooling sliding sleeve, and then enters a settling chamber, a thermal-storage uniform-temperature room to release heat, and a booster fan in sequence, wherein the booster fan and an outside-row pipeline connected to the above of the metallurgical furnace are together connected to a dust remover, and lastly, after subjected to dedusting, the exhaust gas is pressed in an exhaust pipe through a main air blower, and then discharged into the atmosphere. Meanwhile, organic working fluid is driven by a working fluid pump, and absorbs heat in an evaporimeter to become vapor to enter a steam pocket, and the vapor expands in a steam turbine to work so as to drive a generator to generate power. The working fluid vapor discharged from the steam turbine becomes saturated liquid after being subjected to condensation by a condenser, and the saturated liquid flows into the liquid storage tank, and is pressurized by the working fluid pump and then is fed into the evaporimeter to start a new cycle of circulation. According to the invention, the R236EA is used as the cyclic organic fluid. According to the method, the heat energy in the exhaust gas can be recycled to the utmost extent, and be converted into high-grade electrical energy, the investment of devices is low, energy consumption in the operation is low, and the environment-friendly effect is good.

Description

technical field [0001] The invention relates to an integrated dust removal method for exhaust gas inside and outside a metallurgical furnace with a liquid storage tank. Specifically, it can maximize the recovery of heat energy in the flue gas and convert it into high-grade electric energy, and can improve the dust removal ability. It belongs to the dust removal method for metallurgical furnaces. technology field. Background technique [0002] In the prior art, the purification device for the flue gas of the metallurgical furnace is the flue gas generating equipment of the metallurgical furnace, the waste heat utilization facility, and the dust collector are connected in sequence through pipelines. [0003] At present, waste heat utilization facilities are usually used: water column waste heat boilers, regenerative heat pipe heat exchangers to recover the waste heat of metallurgical furnace flue gas, and generate saturated steam, etc. Because the flue gas temperature of meta...

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Problems solved by technology

However, the actual steam output is far lower than the maximum evaporation capacity of the waste heat system, resulting in the situation of large horses and small carts

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