• Title/Summary/Keyword: soot blower

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A Study on Optimal Operation for Soot Blower of Power Plant (발전용 Soot Blower 최적운전에 관한 연구)

  • Kim, Sung-Ho;Jung, Hae-Won;Yook, Sim-Kyun
    • Proceedings of the KIEE Conference
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    • 2004.11c
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    • pp.541-543
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    • 2004
  • An optimal soot blowing system has been developed for an optimal operation of power utility boilers by both minimization of the use of steam and the number of soot blowers worked during soot blowing. Traditionally, the soot blowing system has been operated manually by operators. However, it causes the reduction of power and thermal performance degradation because all soot blowers installed in the plant should be worked simultaneously even there are lots of tubes those are not contaminated by slagging or fouling. Heat transfer area is divided into four groups, furnace, convection area including superheater, reheater and economizer, and air preheater in the present study. The condition of cleanness of the tubes is calculated by several parameters obtained by sensors. Then, a part of soot blowers works automatically where boiler tubes are contaminated. This system has been applied in a practical power plant. Therefore, comparison has been done between this system and manual operation and the results are discussed.

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The Development of Optimal Soot Blowing System for Power Plant (발전용 최적 Soot Blowing 시스템 개발)

  • Kim, Sung-Ho;Jung, Hae-Won;Yook, Sim-Kyun
    • Proceedings of the KSME Conference
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    • 2001.11b
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    • pp.897-902
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    • 2001
  • SBOS(Soot blower Optimum System) analyzes the accumulated fouling rate of a coal-fired boiler plant at short intervals, compares it with a reference data, and determines the optimal time of soot blowing. In this paper, ANFIS algorithm which is an optimal algorithm to detect variation of boiler performance with time, updating the reference data and to eliminate the effects of noise in field signal is used to clean heating surface and to reduce steam needed to blow the soot.

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Computational Study on the Soot Blowing Method for Enhancing the Performance of the SCR System (SCR 시스템의 효율적인 운영을 위한 Soot Blowing 방법에 대한 해석적 연구)

  • Seo, MoonHyeok;Chang, HyukSang
    • Particle and aerosol research
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    • v.8 no.3
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    • pp.99-110
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    • 2012
  • In the SCR (selective catalytic reduction) system which is used for controlling the NOx emission from the Diesel engines, the soot deposited on the catalysis causes degradation of the system performance. Numerical study was done to evaluate the performance of soot blower which is proposed as a method for removing the soot on the catalysis. The spray conditions and the effect of the compressed air from the AIG (air inlet gun) were analyzed numerically to evaluate the overall effective method of the soot blowing. The characteristics of the final velocity distribution and velocity waves across the inlet section of the catalysis were evaluated with respect to the geometries of the AIG outlets and pressure conditions. An experimental model was used to validate the results of the numerical calculation that is used for finding the effective removal blowing momentum transfer quantities of soot the inlet section of the catalysis, and it is proposed that the required minimum blowing momentum transfer quantities are over than 0.499 $kg/m{\bullet}t_{eff}$ in the current study.

A Study on the Removal of Slagging and Fouling for an Optimal Operation of Power Utility Boilers (보일러 최적운전을 위한 슬래깅 및 파울링 제거 연구)

  • Yook, Sim-Kyun;Kim, Sung-Ho;Lee, Byeong-Eun;Lee, Sang-Ryong
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.27 no.12
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    • pp.1772-1780
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    • 2003
  • An optimal soot blowing system has been developed for an optimal operation of power utility boilers by both minimization of the use of steam and the number of soot blowers worked during soot blowing. Traditionally, the soot blowing system has been operated manually by operators. However, it causes the reduction of power and thermal performance degradation because all soot blowers installed in the plant should be worked simultaneously even there are lots of tubes those are not contaminated by slagging or fouling. Heat transfer area is divided into four groups, furnace, convection area including superheater, reheater and economizer, and air preheater in the present study. The condition of cleanness of the tubes is calculated by several parameters obtained by sensors. Then, a part of soot blowers works automatically where boiler tubes are contaminated. This system has been applied in a practical power plant. Therefore, comparison has been done between this system and manual operation and the results are discussed.

A Study on the Development of 3rd Stage IGG Blower for Shipbuilding Using CFD (CFD를 이용한 선박용 IGG Blower 개발에 관한 연구)

  • Lee, Jong-Jing;Yi, Chung-Seub;Jeong, Soon-Jae;Jang, Sung-Cheol;Kim, Chi-Won
    • Proceedings of the SAREK Conference
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    • 2008.06a
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    • pp.1309-1314
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    • 2008
  • I.G.G is abbreviation for Inert Gas Generator, High temperature in Cargo Tank it desulfurize, exhausted and froze the gas that combined brimstone element and soot, then supply Inert gas by blower, and mack tank inside incombustible range this is equipment that nip in the bud the explosion. The blower for suppling inactivated gas has big impeller with heavy weight to achieve the high pressure, it causes a delay for first operation time and too much load is delivered to motor, total destruction by fire of motor is happening frequently. On this research, we will reduce the size & weight of impeller and install it with several stage, it makes an effect for reducing the first operation time. We also intend to contribute to efficient IGG blower design by research a flowing & pressure specialty from the diameter of impeller, number of blade, and size of casing.

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The Development of Multi-Blades I.G.G Blower for Shipbuilding & Ocean (조선/해양용 다단 블레이드 I.G.G 블로워의 개발)

  • Jang, Sung-Cheol;Park, Rae-Bang;Hur, Nam-Soo
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.21 no.3
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    • pp.446-450
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    • 2012
  • I.G.G is abbreviation for inert gas generator high temperature in cargo tank it desulfurize, exhaust and froze the gas that combined brimstone element and soot, then supply inert gas by blower and mack tank inside incombustible range this is equipment that nip in the bud the explosion. The blower for suppling inactivated gas has big impeller with heavy weight to achieve the high pressure, it causes a delay for first operation time and too much load is delivered to motor, total destruction by fire of motor is happen frequently. On this research, we will reduce the size and weight of impeller and install it with several stage, it makes an effect for reducing the first operation time. We also intend to contribute to efficient I.G.G. blower design by research a flow rate and pressure specialty from the diameter of impeller number of blades and size of casing.

Optimization of Lace Tube with Gray Theory and Design of Experiment (회색 관계 이론과 실험계획을 이용한 Lance Tube Nozzle 최적화)

  • Jeong, Ilkab;Lee, Dongmyung;Lee, Sangbeom;Lim, Jintaek
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.6
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    • pp.1001-1006
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    • 2016
  • As consumption of energy is increasing rapidly, energy saving is emphasized in nowadays. Thermal power plant occupies a large proportion in various type of power plant. Major causes of decreased power generation efficiency on thermal power stations is deposition of fly ash. Soot Blower is a facility to remove the ash which is deposited outside of tube by steam blowing on boiler. Residual stream which caused by lance tube in soot blower cannot be discharged steam effectively in lance tube causes reducing the thickness of lance tube. On the contrary, increasing discharge ratio of steam, lance tube cannot sustain proper pressure to remove ash on tube. This study suggests increasing discharge ratio of steam with proper pressure to remove ash on tube by optimization on shape of lance tube nozzle. To optimize shape of nozzle, discharge ratio and maximum blowing pressure on nozzle is selected as object functions. Diameter of nozzle, distance between nozzles, angle of nozzle and gap between nozzle is selected as design parameters. Then the design of experiment (DOE) with an orthogonal array is performed to analyze the effect of design parameters. And grey relational analysis and analysis of mean (ANOM) is performed to optimize shape of lance tube.