摘要:
A system for purifying heated exhaust gases discharged from an internal combustion engine, a furnace, or the like. The system includes a novel rotating finned tube heat exchanger of generally cylindrical configuration. The exchanger has a plurality of longitudinally extending conduits which direct the exhaust gases back and forth between opposite end chambers of the heat exchanger. The gases are additionally passed, as required depending upon the type of pollutants they contain, through a series of purification devices which may include a novel afterburner to rid the gases of entrained unburned fuel, one or more water bath devices to cleanse the gases, and a separator to removed unburned compounds.
摘要:
A filter is made with heat-insulating ceramic fibers, and where the filter is increased in pressure loss due to particulate matter captured after filtration of exhaust gas, gas flow is blocked, a heating element is used to heat the surface of the filter, thereby burning and removing particulate matter. The filter is of heat insulating properties, by which a heat insulating material is arranged near the particulate matter capturing face of the filter, and the heating element is incorporated between the surface of the filter and the heat insulating material. The filter can be regenerated at a higher heating efficiency in a smaller quantity of thermal energy. The heat insulating material is also used as a filter, by which the apparatus can be made more compact. A charging element is arranged upstream of the filter material, by which the filter material is increased in particulate matter capturing performance, thereby suppressing the rate of increase in the pressure loss and improving heating efficiency of particulate matter.
摘要:
An integrated NOx after-treatment system for an internal combustion engine includes (a) a fuel supply subsystem for supplying an inlet fuel stream to the engine fuel intake, (b) an air supply subsystem for supplying an inlet oxygen-containing air stream to the engine air intake, (c) a fuel processor to which a fuel stream having substantially the same composition of the engine inlet fuel stream is directed, the fuel processor converting the fuel stream directed to the fuel processor to an outlet stream comprising H2 and CO, (d) an adsorbent bed subsystem that cycles between an adsorbent state in which constituents from the engine exhaust stream are adsorbed and a desorption state in which the constituents are desorbed and converted to at least one of SO2 and an environmentally-benign component selected from the group consisting of N2, H2O and CO2, and (e) a recirculation stream for directing at least some of the fuel processor output stream to the engine air intake.
摘要:
In order to achieve effective cleaning of an inlet side of a catalytic converter in a combustion system, in particular a large-scale internal combustion engine system, a cleaning device having a cleaning brush for mechanically removing deposits is provided on the inlet side. The cleaning brush effectively and reliably removes and swirls up the deposits which have been formed, which are carried away with the exhaust gas in the flow direction through the catalytic converter.
摘要:
Improvements are described in the injection of ammonia (NH.sub.3) into the exhaust gases of an engine to reduce nitrogen oxides. Instead of merely injecting ammonia into the exhaust gas conduit through a hole in its side, an ammonia injector (90) is provided that projects considerably into the exhaust conduit (16), with the injector having a plurality of holes (94). The ammonia is activated to decompose it into its reactive components, including NH.sub.2 and NH prior to injecting it into the exhaust conduit. Such activation prior to injection can be accomplished by heating the ammonia in the presence of a catalyst such as a metal of the platinum group, iron, nickel, or zinc. In an engine that has a fuel injection system wherein electrical pulses are delivered to fuel injectors to control the fuel flow rate, the durations of these electrical signals are used to control the opening of a valve (72) that controls the flow rate of ammonia into the exhaust gas conduit.
摘要:
A heat exchanger is disclosed which is operated between a source and a sink comprising a frame journaling a rotor relative to the frame which rotor has a first and second rotor end. Heat transfer means which may include a fluid conducting conduit or an electrical heating path forms a conduction path between the first and second rotor ends. The conduction path extends back and forth between a region proximate a first rotor end and a region proximate a second rotor end a plurality of times. The conduction path is connected to either the source or the sink to provide energy transfer therebetween. Means are provided for rotating the rotor for transferring heat between the conduction path and the other of the source and the sink. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.CROSS-REFERENCE TO RELATED APPLICATIONSThis is a continuation-in-part of my pending application, Ser. No. 481,489, filed June 21, 1974 which was a continuation of my prior application Ser. No. 281,542, filed Aug. 17, 1972, now abandoned, which claims priority from my Italian application Ser. No. 32916 A/71, filed Dec. 24, 1971, and my Italian application Ser. No. 20889 A/72, filed Feb. 22, 1972.
摘要:
Oxides of nitrogen are adsorbed onto the surfaces of gas passages (68) in a bed (57, 100) that has relative rotation with respect to a gas inlet distributor (76, 101). The manifold has a baffle (85) or ribs (121, 122) that causes constantly flowing engine exhaust (53) to enter the gas passages over a large portion of a revolution of the adsorption bed or the distributor, and causes constantly flowing regeneration gas (54) to thereafter pass through those passages during a small portion of each revolution. The passages may be formed by planar (66a) or helical (66b) radial walls (66), a serpentine wall (70), a monolith (126), or a honeycomb (127). Either the distributor (101) or the bed (57) may be rotated to distribute the gases.
摘要:
Oxides of nitrogen are adsorbed onto the surfaces of gas passages (68) in a bed (57, 100) that has relative rotation with respect to a gas inlet distributor (76, 101). The manifold has a baffle (85) or ribs (121, 122) that causes constantly flowing engine exhaust (53) to enter the gas passages over a large portion of a revolution of the adsorption bed or the distributor, and causes constantly flowing regeneration gas (54) to thereafter pass through those passages during a small portion of each revolution. The passages may be formed by planar (66a) or helical (66b) radial walls (66), a serpentine wall (70), a monolith (126), or a honeycomb (127). Either the distributor (101) or the bed (57) may be rotated to distribute the gases.
摘要:
A device to eliminate particulates contained in exhaust gas ejected from motors, such as diesel engines for ships, surface transportation vehicles and overland fixed diesel engines, and a process to eliminate particulates contained in the exhaust gas are provided. The device of the present invention is a device for eliminating particulates contained in exhaust gas 10 ejected from diesel engines constituted by a discoid-shaped filter 11 used as a capturing means to capture the particulates and sprayers 13 having a plurality of nozzles 13a, such as spray type and shower type, used as a catalyst attaching means to attach an alkaline metal catalyst solution 12 onto the surface of the captured particulates in the discoid-shaped filter 11, and the device attaches the catalyst onto the surface of the captured particulates, and then burns and decomposes the unburned particulates portion in the exhaust gas.
摘要:
A device to eliminate particulates contained in exhaust gas ejected from motors, such as diesel engines for ships, surface transportation vehicles and overland fixed diesel engines, and a process to eliminate particulates contained in the exhaust gas are provided. The device of the present invention is a device for eliminating particulates contained in exhaust gas 10 ejected from diesel engines constituted by a discoid-shaped filter 11 used as a capturing means to capture the particulates and sprayers 13 having a plurality of nozzles 13a, such as spray type and shower type, used as a catalyst attaching means to attach an alkaline metal catalyst solution 12 onto the surface of the captured particulates in the discoid-shaped filter 11, and the device attaches the catalyst onto the surface of the captured particulates, and then burns and decomposes the unburned particulates portion in the exhaust gas.