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Sun Xian-bin – 1st expert on this subject based on the ideXlab platform

  • Recognition of CFB Boiler Environmental Protection Characteristics under Current Environmental Standards
    Power System Engineering, 2020
    Co-Authors: Sun Xian-bin

    Abstract:

    Compared with the PC Boiler,CFB Boiler has many advantages.For example,it has high desulfurization efficiency when limestone powder is simply injected into the furnace;it has low NOx emission because of low combustion temperature,wide fuel adaptability and excellent load adjustment ability.This paper analyzes factors of effect desulfurization and denitration under current environmental standards.Operation optimize and facility retrofit could improve environmental protection characteristics of CFB Boiler.The circulating fluidized bed Boiler Technology will has broad application avoid overmuch investment.

  • A STUDY ON THE DESIGN OF DOMESTIC 300MW CFB BoilerS
    Thermal Power Generation, 2020
    Co-Authors: Sun Xian-bin

    Abstract:

    Based on summarizing a vast amount of test and research, design and manufacture, operating experience and technical renovation, a technical scheme having self-owned intellectual property right for designing domestic 300MW CFB Boilers has been developed. The design ideas, technical features of furnace type, the design of important parts and auxiliary equipment’s on Boiler island have been analyzed and discussed in detail, it is expected to provide an all-round technical support for the development and engineering application of large-scale CFB Boiler Technology in domestic power plants.

  • Cold experimental study on the compact splitting-type returning ash heat exchanger of CFB Boilers
    Journal of Shenyang Institute of Engineering, 2020
    Co-Authors: Sun Xian-bin

    Abstract:

    The external heat exchanger(EHE) is the key Technology for large-scale CFB Boilers.In order to develop the large CFB Boiler Technology with independent intellectual property rights and meet the need of home-made 200 MW CFB,an external compact splitting-type returning ash heat exchanger was developed.It is of integrated structure to control the circulating ash flow and realize the cooling and returning function.The CHE characteristic study is carried out on a 4.4m test bench for the splitting and regulating which guide the further hot-state experimental and the real Boiler design.

Nima Amjady – 2nd expert on this subject based on the ideXlab platform

  • A techno-economic assessment for replacement of conventional fossil fuel based technologies in animal farms with biogas fueled CHP units
    Renewable Energy, 2018
    Co-Authors: Fatemeh Teymoori Hamzehkolaei, Nima Amjady

    Abstract:

    In this paper, a case study applied to an animal farm in Iran, covering both technical and economic aspects of biogas production using manure from livestock to replace fossil fuel used for heat and electricity generation is presented. The mentioned farm has 3058 dairy cows. Biogas production followed by small-scale combined heat and power (CHP) units based on a new dual fuel internal combustion engine (ICE) have replaced conventional Technology used today, namely electricity from the grid and diesel fuel for heating via Boiler Technology. Results from the techno-economic studies reveal that alternative Technology using biogas as fuel are superior compared to the conventional one, both from economic and environmental point of view. By evaluating the proposed model, the annual cost saving, percentage of system profitability index, and payback period are calculated as 73,159.31 $, 60.99% and 28.5 month, respectively. Replacing the conventional Technology by biogas based Technology results in 529.65 tons per year annual CO2emission reduction for this typical animal farm. Finally, a sensitivity analysis is elaborated in order to show how the profitability of biogas CHP plants would vary due to changes of some key parameters such as prices of diesel fuel, electricity and electricity buyback.

H Spliethoff – 3rd expert on this subject based on the ideXlab platform

  • high temperature heat and water recovery in steam injected gas turbines using an open absorption heat pump
    Applied Thermal Engineering, 2020
    Co-Authors: A Vandersickel, W Wedel, H Spliethoff

    Abstract:

    Abstract The advantages of reinjecting steam from the heat recovery steam generator (HRSG) in the preceding gas turbine are increased power and electrical efficiency at low specific cost and a high operating flexibility. The discharge of the injected steam to the ambient has however two major drawbacks: (1) a relevant water consumption and (2) a large thermal loss related to the latent heat of steam. An open absorption heat pump cycle downstream of the HRSG can solve both problems, as it allows to recover the steam from the flue gas and use its condensation heat at elevated temperature. This paper presents for the first time a concept to efficiently integrate both technologies and assesses the potential and limitations of the absorption system for a steam injected gas turbine. For high network return temperatures (60 °C), the “High Temperature Condensation Boiler Technology” (HT-CBT) performs significantly better than a conventional flue gas condenser over the entire STIG operating range, both with respect to fuel efficiency and water recovery. For steam injection rates up to 1.16 kg/s (60 °C) and 0.96 kg/s (40 °C) fuel efficiency remains constant at ca. 95% resp. 102% and power can hence be increased without the associated energetic penalty. Within this range, full water recovery eliminates the high water usage of the Cheng Cycle, making it a suited Technology for flexible cogeneration also in dry areas. For higher steam injection rates, the added benefit of the HT-CBT was found to be restricted by the limited availability of desorber heating from the HRSG, suggesting the integration of external desorber heating. The possibility to increase the power output for a given heat demand, with limited impact on fuel efficiency, increases the economic viability of the Technology compared to heating only applications.