| OCR Text |
Show DEMONSTRATION-SCALE CYCLONIC INCINERATION SYSTEM The cyclonic incinerator featured a compact incineration chamber with an ash/slag receiver and is capable of operating either in dry or slagging modes. The demonstration system had a wastewater handling subsystem and was equipped with a heat recovery boiler, an air heater, and a baghouse. A flow diagram of the demonstration system is shown in Figure 1. A description of the system's major components is given below. Wastewater Handling Subsystem The pump that supplies wastewater to the incinerator is a Model "0" Cresaco pump with rubber impellers. Pump capacity can be varied through a variable frequency AC drive, either manually or automatically through a flowcontrol loop. The loop begins with a micromotion flowmeter in the wastewater conveying line, which sends a signal back to a flow-recording controller. The controller, in turn, varies the pump speed to maintain a desired preset flow rate. The pump was directly fed by a 4000 gallon heated storage tank. The incinerator was located approximately 135 feet from the pump which required tracing the jacketed line with 180° to 190°F water. A pressure switch was provided before a dual filter arrangement to detect low flow in the conveying line. The system was designed to shut off the pump on an overload condition, but when flow to the incinerator is not desired, the flow can be diverted. Incinerator Chamber The incinerator chamber is internally insulated with Harbison-Walker's ruby plastic refractory on anchoring studs with a water-cooled jacket external to the refractory. The unit is equipped with an Eclipse nozzle-mixing pilot for start-up and flame safety is provided by an air-cooled ultraviolet scanner along with a solid-state flame control. The base of the incinerator is refractorylined with the slag/ash removal port located at the side of the base. Major design parameters of the incinerator chamber are: Waste Consumption, gal/h Natural Gas Firing Rate, CF/h Cooling Water Flow, gal/min Inside Diameter, in. Height, in. 3 60 720 22 27-1/4 54-1/2 |
