| OCR Text |
Show Stack gas samples are obtained at the rear of the combustion chamber near the entrance to the stack (see Figure 1). Additionally, a wide angle viewport is located on the rear wall of the chamber. This port is used for visual observations and for obtaining photographic records of the various flames under study. The combustion chamber is supported with the following equipment: 1. Three Teledyne Analytical Instruments to measure CO, C0?, and 0? along with combustibles on a dry volume basis, 2. An Orsat type gas analyzer supplied by Burrell Corporation to measure CO, C0„ and 0~ , 3. Two viscosimeters for Newtonian and non-newtonian fluids (Lab Line and Brookfield), 4. A SWEECO coal categorizer, 5. A Fluke Model 2200B Temperature Data Logger, 6. An EPA approved gas sampling system to measure sulfur dioxides and particulate emissions and, 7. Complete fuel handling and fuel feed systems for solid, liquid and gaseous fuels. A schematic of the fuel feed system used in this study is presented in Figure 2. Two mixing and holding tanks are used so that immediate comparisons may be observed between the parent fuel (No. 2 fuel oil) and the fuel mixture being tested. This feed system has been refined to include a Monyo direct drive pump along with through port valves and a streamlined piping network. This is extremely important to reduce fuel line plugging hence providing a stable fuel flow to the burner tip. Finally, a description of the low atomizing air pressure burner which is permanently mounted on the front wall of the combustion chamber will be provided. This burner, an Eclipse Convecto Flame Burner Model 168-HCF-CGO, is a multifuel burner which is used to preheat the combustion chamher (when firing natural K-1^) ''f^1 n'iS been used m preliminary No. 2 fuel oil-coal studies (1,5). it is a Low pressure, air atomizing type multifuel burner with a turn-down ratio of 4 to 1 corresponding to firing rates of l.lxl06kJ (1.0x10 Btu) to 4.4x10 kJ (4.2xlObBtu) per hour The burner fires liquid fuels ranging from No. 2 to No. 6 fuel oil, along with natural gas. More details of this burner system have been provided in reference 6. 5 |
