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Emission Test Report <br /> EMC WA-2-08 <br /> x <br /> Section 2 <br /> Revision: 0 <br /> Date: September 30.1999 <br /> Page 1 of 2 <br /> Section 2. <br /> Source Description <br /> 2A Process Description <br /> The crematory at Woodlawn Cemetery is located in a lower level adjacent to the <br /> basement of the Woolworth Chapel. Four cremation incinerator units of the same design <br /> are operated and vented to the common chimney located on a side of the steeple. A <br /> z schematic of the unit tested is presented in Figure 2-1. A retort is preheated prior to <br /> introducing the body container for cremation. Typical cremation takes approximately <br /> 2 hours. Following a cremation, the cooldown, removal of the remains, and preheating for <br /> the next cremation takes approximately 1 hour. <br /> r- The cremation incinerator unit retort consists of a primary combustion chamber where <br /> cremation occurs and a secondary chamber where the products of combustion from the <br /> primary chamber are incinerated further to reduce emissions. The external dimensions of <br /> the retort are approximately 15 feet long by 5 feet wide by 6 feet high. The burner in the <br /> primary chamber is rated at approximately 0.6 �TU/hr, and the burner in the secondary <br /> chamber is rated at approximately 1 .O 1VMTUIhr. A forced air blower (approximately <br /> 3 400-600 scfm) supplies air to both burners and chambers. <br /> Combustion gases and products are vented through refractory-lined ductwork above <br /> :. the retort to a wet scrubber with spray chambers using unmodified water (i.e., not caustic <br /> s.. or acidic). Gases from the scrubber ass through a short section of duct with a damper to <br /> p g p <br /> the chimney. Uncontrolled emissions were measured in the horizontal, circular section of <br /> h duct immediately upstream from the scrubber. Ports were installed for the tests. <br /> Controlled emissions were measured in the short horizontal, circular section of duct <br /> g between the scrubber and chimney. A new section with ports and without the damper was <br /> 'y installed for the tests. The damper is used to isolate the unit from the chimney and the <br /> other three units when it is not in use. This unit is considered to be typical for cremation <br /> Y incinerators, and the scrubber, or a similar device, may be a candidate for maximum <br /> F achievable control technology. <br /> 2.2 Control Equipment <br /> Combustion gas passes through a wet scrubber prior to entering the chimney. <br /> Entrained particulate matter and other pollutants exiting the secondary combustion <br /> chamber are removed in the scrubber. The horizontal, cylindrical, stainless steel scrubber <br /> unit is approximately 48 inches long with a 36-inch diameter and uses unmodified city <br /> pp Y g tY <br /> NM-AM%Q51-08-03 SLwpd <br />