• Title/Summary/Keyword: Waste heat boiler with water tube

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Optimum Design of Waste Heat Boiler with Water Tube and Three Drum (3드럼 수관식 폐열보일러의 최적설계)

  • Lee, Kwan-Jong;Han, Jin-Ho
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.18 no.12
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    • pp.992-998
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    • 2006
  • This study is to optimize design parameters for waste heat recovery boiler with water tube and three drum. The design optimization considered here is to find the most economic dimension of the boiler considered which results in a minimum cost in producing a unit amount of steam per given period of operation. For this purpose, optimize design have to determine what are the main parameters of affecting the total cost of producing a unit amount of steam which is comprised of manufacturing cost of the boiler, operating cost of the fan etc.

Basic Study on the IoT Micro Boiler (IoT 마이크로 보일러에 대한 기초 연구)

  • Jang, Sung-Cheol
    • Journal of Internet of Things and Convergence
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    • v.8 no.1
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    • pp.23-29
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    • 2022
  • The product to be developed in this study is a heat recovery device which generates steam or hot water at high temperature and high pressure by heating water using exhaust gas from diesel engine, gas engine, gas turbine, etc. as an exhaust gas boiler off heat boiler(EGB) type for ship and power generation. The steam vapor or the created warm water is used as the power source required for the steerage heating and hot water facility or the HFO heating of the ship, and the turbine drive. The principle of waste heat boilers serves to heat water as high temperature exhaust gas with heat pass through the tube of the boiler. The heated water is a structure that is sent to a cabin or turbine device in the form of steam. In this study, the objective of this study is to maximize the efficiency by increasing the heat transfer surface by replacing the tube which is the heat transfer part of EGB with the plate tube.

A Study on Syngas Co-Combustion Characteristics in a 0.7 MWth Water-Tube Boiler with Single Heavy Oil Burner (중유 싱글 버너 수관식 보일러에서의 합성가스 혼합연소 특성 연구)

  • Choi, Sin-Yeong;Yang, Dong-Jin;Bang, Byoung-Yeol;Yang, Won
    • Transactions of the Korean hydrogen and new energy society
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    • v.21 no.5
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    • pp.452-459
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    • 2010
  • This study is aimed to investigate changes of combustion characteristics and heat efficiency when syngas from gasification process using low-rank fuel such as waste and/or biomass is applied partially to an industrial boiler. An experimental study on syngas co-combustion was performed in a 0.7 MW (1 ton steam/hr) water tube boiler using heavy oil as a main fuel. Three kinds of syngas were used as an alternative fuel: mixture gas of pure carbon monoxide and hydrogen, syngas of low calorific value generated from an air-blown gasification process, and syngas of high calorific value produced from an oxygen-blown gasification process. Effects of co-combustion ratio (0~20%) for each syngas on flue gas composition were investigated through syngas injection through the nozzles installed in the side wall of the boiler and measuring $O_2$, $CO_2$, CO and NOx concentrations in the flue gas. When syngas co-combustion was applied, injected syngas was observed to be burned completely and NOx concentration was decreased because nitrogen-containing-heavy oil was partially replaced by the syngas. However, heat efficiency of the boiler was observed to be decreased due to inert compounds in the syngas and the more significant decrease was found when syngas of lower calorific value was used. However, the decrease of the efficiency was under 10% of the heat replacement by syngas.