Application of acoustic agglomeration to hot gas clean up in pressurized fluidized bed combustors

1981 ◽  
Author(s):  
K. CHOU ◽  
P. LEE ◽  
D. SHAW
Keyword(s):  
Fluidized Bed ◽  
Hot Gas

Erosion Resistance and Efficiency of Energy Exchangers

1982 ◽  
Author(s):  
W. J. Thayer ◽  
R. T. Taussig
Keyword(s):  
Power Plant ◽  
Fluidized Bed ◽  
Gas Turbines ◽  
Power Plants ◽  
Erosion Resistance ◽  
Operating Characteristics ◽  
Hot Gas ◽  
Point Increase ◽  
Effluent Stream ◽  
Plant Efficiency

Applications of energy exchangers, a type of gasdynamic wave machine, were evaluated in power plants fired by pressurized, fluidized bed combustors (PFBCs). Comparative analyses of overall power plant efficiency indicate that the use of energy exchangers as hot gas expanders may provide a 0.5 to 1.5 efficiency point increase relative to gas turbines. In addition, the unique operating characteristics of these machines are expected to reduce rotating component wear by a factor of 50 to 300 relative to conventional gas turbines operating in the particulate laden PFBC effluent stream.

Development of a Coal Fired Pressurized Fluidized Bed for Combined Cycle Power Generation

1980 ◽  
Author(s):  
S. Moskowitz ◽  
G. Weth ◽  
A. Leon
Keyword(s):  
Fluidized Bed ◽  
Large Scale ◽  
Technology Development ◽  
Turbine Blades ◽  
Combined Cycle ◽  
Test Time ◽  
Test Program ◽  
Hot Gas ◽  
Fluid Bed ◽  
Electric Plant

A program to design, construct and operate a pilot electric plant using a pressurized fluidized bed (PFB) combustor burning high sulfur coal to produce electricity at competitive costs and in an environmentally acceptable manner is proceeding under DOE sponsorship. Three components were identified needing experimental test data to validate the selected design configurations or material selections. These components included: (a) PFB in-bed heat exchanger tubes, (b) hot gas cleanup system, and (c) turbine blades. R&D test programs utilizing laboratory rigs, commercial fluid bed reactors, and a large scale PFB technology rig were conducted for a cumulative test time of over 10,000 hr. Design criteria and configurations were selected and verified. This paper presents the results of the technology development presents the results of the technology development tests. Also, the large scale PFB technology rig design and test program are presented. The results of operating a small gas turbine coupled to the PFB combustor and hot gas cleanup system within this technology rig are discussed.

Experimental study on fluidized-bed start-up process with hot gas

1998 ◽  
Vol 22 (11) ◽  
pp. 981-989 ◽  
Author(s):  
Wu Xin ◽  
Zhao Changsui ◽  
Duan Yufeng ◽  
Chen Xiaoping
Keyword(s):  
Experimental Study ◽  
Fluidized Bed ◽  
Hot Gas ◽  
Start Up

A Review of the Efficacy of Silicon Carbide Hot-Gas Filters in Coal Gasification and Pressurized Fluidized Bed Combustion Environments

1996 ◽  
Vol 118 (3) ◽  
pp. 500-506 ◽  
Author(s):  
R. R. Judkins ◽  
D. P. Stinton ◽  
J. H. DeVan
Keyword(s):  
Silicon Carbide ◽  
Fluidized Bed ◽  
Coal Gasification ◽  
Relevant Literature ◽  
Combined Cycle ◽  
Fluidized Bed Combustion ◽  
Gas Cleaning ◽  
Hot Gas ◽  
Hot Gas Cleaning ◽  
Pressurized Fluidized Bed Combustion

Reviews of relevant literature and interviews with individuals cognizant of the state of the art in ceramic filters for hot-gas cleaning were conducted. Thermodynamic calculations of the stability of various ceramic phases were also made. Based on these calculations, reviews, and interviews, conclusions were reached regarding the use of silicon carbide-based ceramics as hot-gas filter media. Arguments are presented that provide the basis for our conclusion that high-purity silicon carbide is a viable material in the integrated coal gasification combined cycle (IGCC) and pressurized fluidized-bed combustion (PFBC) environments we examined. Clay-bonded materials are, we concluded, suspect for these applications, their extensive use not-withstanding. Operations data we reviewed focused primarily on clay-bonded filters, for which a great deal of experience exists. We used the clay-bonded filter experience as a point of reference for our review and analysis.

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