Abstract:
This reactor for the gasification of solid fuels in the powdered form, of the type employing a bath of liquid metal (5) comprises: a substantially cylindrical vessel (1) which has a substantially oblong section and lateral walls (2) and a bottom wall (3) which are lined with a refractory lining (4), this vessel further comprising an orifice (37) for discharging the bath of liquid metal, and an orifice (36) for discharging slag supernatant on the bath of liquid metal (5), a dome (11) positioned in a sealed manner on the vessel (1) and having in its upper part in the vicinity of one of the ends of the vessel a sealed box (16) for introducing an injecting branch (17) and, also in its upper part, but at the opposite end of the vessel, an orifice (21) of large section for exhausting the gases produced, and a roughly central orifice (29) for introducing addition elements; and means (8, 9, 10a-e, 6, 13, 14, 15) for cooling the lateral walls and the bottom wall of the vessel and the dome.
Abstract:
A method of maintaining a synthetic gas (syngas) cooler for use within a gasifier system is provided. The method includes breaking at least a portion of a non-bonded joint and a seam weld on a quench ring assembly. At least a portion of the wear sub-assembly and a flow control sub-assembly is removed, and the wear sub-assembly is separated from the flow control sub-assembly. The method further includes removing the separation device that extends between the flow control sub-assembly and the wear sub-assembly. At least a portion of the wear sub-assembly is replaced by positioning the replacement portion of the wear sub-assembly over the flow control sub-assembly and coupling the replacement portion of the wear sub-assembly to the main structural member. The method provides a more efficient replacement of worn sub-assemblies, which decreases the time and costs associated with maintenance.
Abstract:
A carburetor includes a main body defining a bore, a main passage and a venturi defined within the bore, and a fuel nozzle carried by the main body and including a fuel nozzle outlet communicating with the venturi. The carburetor may also include a valve member translatable across an axis of the bore, such that in a closed state, the valve member closes the main passage but maintains the venturi at least partially open. The carburetor may also include a needle valve disposed at an end of the fuel nozzle substantially opposite of the fuel nozzle outlet to variably control flow of fuel into a fuel nozzle inlet, and a needle valve transmission may be coupled between a throttle shaft and the needle valve to convert rotation of the throttle shaft to translation of the needle valve.
Abstract:
A system for transporting and burning under negative pressure in a boiler a raw coke oven gas to produce steam energy. The system has the usual battery of coke ovens and corresponding ascension pipes connected to a collector main. Flushing liquor is sprayed into the hot coke oven gases to effect cooling in the collector main. A transport main delivers the cooled raw coke oven gases and flushing liquor to a burner of a steam producing boiler where the transport main includes a downcomer for separating the raw coke oven gas from the flushing liquor. The coke oven gas is burned in the boiler where a suction fan is provided at the exhaust of the boiler to develop a negative pressure in the system where the boiler has reinforced walls to withstand the negative pressure. A change in negative pressure in the system is detected and monitored by a controller system which varies draw of the suction fan in response to a detected change in negative pressure in the system. The system is readily retrofitted to existing coke ovens and in turn replaces the usual by-products plant. The generated steam may be used in the co-generation of electrical or mechanical energy. The system may be controlled in a manner to minimize and/or eliminate surplus flushing liquors.
Abstract:
COAL IS CONVERTED TO LIQUID PRODUCTS UTILIZING A TWOSTAGE SOLVENT EXTRACTION PROCESS WHEREIN THE LIQUID COAL PRODUCTS ARE SEPARATGED FROM UNREACTED COAL AND ASH WITHOUT REQUIRING FILTRATION. THE COAL IS FIRST CONTACTED WITH CONVENTIONAL COAL SOLVENTS, SUCH AS TETRAHYDRONAPHTHALENE UNDER HYDROGEN PRESSURE; THE SOLVENT IS REMOVED VIA FRACTIONATION; AND HYDROGEN-RICH COAL COMPONENTS PRODUCED ARE RECOVERED FREE OF PARTICULATE MATTER BY SOLVENT EXTRACTION WITH A LIGHT AROMATIC OR KETONE SOLVENT.