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HomeMy WebLinkAboutC.054.93011_1127Robertson said the leftover parts were placed in a vat and cooked to eliminate the water. Eaglin said this was correct. He said rendering was basically removing the water and making the product stable. Robertson asked if it entailed batch work or a continuous process. (Was there an auger that feed the cooker?) Eaglin said it was a batch system with the material loaded into the cooker. He said the water was driven off by heat and condensed. Robertson asked what fueled the bumer. Lea said he was selecting oil. Robertson said water vapor would occur along with other materials that would go through a heat exchanger/condenser. He asked what type of condenser would be used. Eaglin said a contact condenser that would condense the water vapors. Robertson asked what fed the condenser -- cooling water or chilled water. Eaglin said chilled water. Robertson said this turned the steam into a liquid that came off. He asked what happened if the chiller failed. Eaglin said a safeguard (temperature controller) would be used. He said this would automatically shut off the steam to the system to eliminate a failure from happening. Robertson asked if the hot liquid went on to a holding tank. Eaglin said yes. Robertson said this was the primary difference between a closed and open system -- an open system went on to a waste treatment pond where there was hot liquid and this was what people smelled. Eaglin said yes, and this was what Tyson had in Harmony. Roberson said the process, thus far, had no material exposed to the atmosphere. He asked if this was correct. Eaglin said yes. Robertson said the liquid was placed in a storage tank and taken to the waste treatment plant in Statesville. He asked if this had been approved by the city. Lea said it had not. Eaglin said the Ohio facility took its material to the local municipality and there were no problems with the acceptance. Robertson asked how long it took to load the vessel. Eaglin said 10 or 15 minutes. Robertson said the vessel was opened to the atmosphere.