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The utility model discloses a kind of molten aluminium stove waste-heat recovery device, comprise inner housing and be fixed on the shell body outside inner housing, shell body is provided with Cryogenic air input port, the top of inner housing sidewall has the opening port be communicated with the space of shell body by inner housing, bottom is provided with …
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supplement heat by using lean blast furnace gas. The non recovery type coke ovens are environmentally safe from emission of toxic pollutants and waste heat recovery from these coke ovens is inherently uncertain and is not widely prevalent. In spite of these uncertain parameters the power generation system for the project activity was designed.
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Hot blast stoves typically require about 3 GJ/t-HM and account for about one third of the enrgy needed to make iron and around 10–20% of the total energy demand in integrated steel works. The efficiency of the hot stoves can be improved by recovering the heat from the flue gases of the stoves (having typical temperatures of around 250 oC (Worrell, …
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Apr 14, 2015· The blast furnace (BF) slag waste heat was recovered by an integrated system stage by stage, which combined a physical and chemical method. The water and coal gasification reactions were used to recover the heat in the system. Based on the first and second law of thermodynamics, the thermodynamic analysis of the system was …
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Hot Blast Stoves Waste Heat Recovery Technology Features. Hot blast stoves typically require about 3 GJ/t-HM and account for about one third of the energy needed to make iron and around 10–20% of the total energy demand in integrated steel works. The efficiency of the hot stoves can be improved by recovering sensible heat from the flue gases ...
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Jan 10, 2020· However in this case, the regenerator is not a waste heat recovery unit, but rather the mechanism for transferring heat from the stove to the hot blast. Sources of off gas waste heat in BF include both the exhaust gases from the hot blast stove and the BFG leaving the BF. There is sensible heat loss from BFG.
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High Volume of Recovered Heat (Blast Furnace Gas Single-fuel Combustion): fuel cost reduction ⇒ $3.40/t-pig (40% fuel cost reduction) ... Our waste gas heat recovery system is equipped with a corrosion prevention system and a dust cleaning mechanism that greatly affect lifespan. The system is capable of achieving long life while maintaining ...
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Jul 31, 2012· Blast furnace (BF) slag, which is the main byproduct in the ironmaking process, contains large amounts of sensible heat. To recover the heat, a new waste heat-recovery system—granulating molten BF slag by rotary multinozzles cup atomizer and pyrolyzing printed circuited board with obtained hot BF slag particle—was proposed in …
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Dec 24, 2017· The total fuel flow rate for blast heating (Conditions 2) expressed as a specific flow rate of fuel equivalent for heating 1000 m 3 of blast is reduced from 74.57 to 69.19 kg fuel equiv./1000 m 3 blast, i.e., by 7.215%. The annual production time of the blast furnace is usually 361 days.
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Page 20 : How CO2 emission factor of 102 t CO2/TJ for coke has been involved in the calculation. It's all about Blast furnace gas waste heat recovery,It seems there is serious calculation and methodology problem and validator has not really gone into details or not aware of the system 9. Page 22; Net quantity of heat supplied is missing
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Molten slag of blast furnace temperatures up to 1400 ℃ ~1500 ℃, heat, is a high-quality waste heat. Our main water quenching slag treatment processes, a lot of slag by high. temperature slag-washing water for cooling, temperature of 70℃ ~85℃-producing hot water. Typically, in order to ensure the recycling of slag-washing water needs to ...
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Oct 26, 2019· Stoves are also provided with Waste Heat Recovery System and Coke Oven gas enrichment facilities, if Coke Oven gas is available.Enhancement of Iron Ore Sinter Reducibility through,tion into the blast furnace.16) Although the injection of COG into the blast furnace is practiced in some countries with dif-ferent injection rate from about …
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The method of how to recover this heat depends in part on the temperature of the waste heat gases and the economics involved. A large amount of hot flue gases is produce from boilers, kilns, ovens and furnaces. If some part of this waste heat be recovered, a significant amount of primary fuel could be saved.
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This technology aims at recovering the recover the waste heat from EAF exhaust gases in the form of saturated steam or hot water. It is considered to hold a particularly high potential for EAF operations using primarily DRI. The steam recovered in this manner can be directly used or used according to the purposes such as power generation, sea water …
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Apr 13, 2017· Introduction. Molten BF (Blast Furnace) slag is the byproduct of iron-making process at the high temperature ranging from 1723 K to 1923 K. Because of its low thermal conductivity, ranging from 1 to 3 W m −1 K −1 for solid to 0.1–0.3 W m −1 K −1 for liquid, the waste heat recovery of molten BF slag is difficult.Now, the treatment of molten BF …
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CN113028844A CN202110362102.8A CN202110362102A CN113028844A CN 113028844 A CN113028844 A CN 113028844A CN 202110362102 A CN202110362102 A CN 202110362102A CN 113028844 A CN113028844 A CN 113028844A Authority CN China Prior art keywords flue gas carbon dioxide blast furnace waste heat furnace hot Prior …
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