Scaleup tests and supporting research for the development of duct injection technology Page: 2 of 182

                                
TABLE OF CONTENTS
Emg
1.0 ABSTRACT ........................,................................ ]-1
2.0  INTRODUClON  .....................................................  2-1
3.0 RESEARCH FACILITY ................................                 3-1
3.1 Description of the Duct Injection Test Facility (DITF) ...................... 3-1
3.1.1  System  Description  .... . .. . ............................... . .....  3-1
3.2  Description of the Process Control System  ........  ......... . ............. 3-4
3.2.1 Hardware/Equipment .......................................... 3-7
3.2.2 Operation/Controls . . ............. . ........................ 3-7
3.2.3 COMPAQ System Support Computer .............................. 3-8
3.3  Description of the Gas Sampling System  (GSS) ............................ 3-8
3.3.1 System Requirements ......................................... 3-8
33.2 Evolution of GSS to the Present Form ........................... 3-9
33  QA/QC Concerns ....... .......................... . ........ 3-11
3.4 D. iption of the Data Acquisition System (DAS) .........   ........... . .. 3-13
3.4.1 System Requirements ......................... . ............ 3-13
3.4.2  Evolution of the DAS to the Present Form  ......................... 3-13
3.5 Methods to Measure Sorbent Utilization ............................... 3-14
3.5.1 Gas Sampling ......... . ................ ..................... 3-14
3.5.2 Solids Samples .... . . . .......................   ............. 3-15
3.5.2.1 ESP Hoppe. Sampes . . .... . ......................... 3-15
3.5.2.2 Quench Probe Samples .................. . ............ 3-15
4.0 INITIAL SYSTEM PERFORMANCE ... . .................................. 4-1
4.1 Gas Concentrations .................................... . . . ...... 4-1
4.2  Coal and Ash Properties  ............................................  4-1
4.2.1 Chemistry of the Coal and Ash ... . ........... . .................. 4-1
422 Electrical Resistivity of the Fly Ash ................ . ............... 4-1
4.3 ESP Performance ......................... . ................ . .... .4-4
4.3.1 Performance Data .. . ................ . .................... . ... .4-4
4.3.2  ESP Electrical Data  ......................... . ..................  4-4
4.3.3 ESP Modeling .............................................. 4-4
5.0 NOZZLE TESTS .. . ......................... .......................... 5-1
5.1  Nozzle Testing to Minimize Wall Wetting  ................................  5-1
5.2 Droplet Size Measurements . .........................  ..........  . 5-16
5.2.1  Description of Measurement Methodology .......................... 5-16
5.2.2 Sampling Strategy and Data Analysis Methods ....................... 5-18
5.2.3 Test Results ...................... . ........................ 5-20
5.2.3.1  Droplet Size  Distributions  ............................. . ..  5-20
5.2.3.2 Concentration versus Downstream Distance ................... 5-20
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