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| Number | Title | Issue Date |
| 4398476 | Method for incinerating sewage sludge A method and an apparatus of incinerating dewatered sludge without using an auxiliary fuel comprising pelletizing the partially dewatered sludge having a water content of 70 to 75%, drying the pellets with a heat source obtained by burning gases formed by... | 08/16/1983 |
| 4391208 | Method for controlling temperatures in the afterburner and combustion hearths of a multiple hearth furnace The present invention relates to a method for efficiently incinerating waste material, particularly dewatered sludge, in a multiple hearth furnace by controlling the temperature of the individual hearths of the furnace within certain prescribed limits by ... | 07/05/1983 |
| 4366759 | Mass burning self-cleaning incinerator A method and apparatus for the consumption of relatively mass amounts of refuse in which a plurality of refuse burning grates are spaced one above the other. The refuse is supplied to and deposited selectively on selected ones of all of the grates while t... | 01/04/1983 |
| 4347156 | System and process for reactivating carbon There is provided a system for reactivating wet, spent carbon including a drying device to heat the carbon to drive moisture from the carbon as steam. A multiple-hearth furnace receives the carbon from the drying device, and the carbon is baked and reacti... | 08/31/1982 |
| 4334484 | Biomass gasifier combustor The present invention is directed to a biomass gasifier combustor which operates by gasification and combustion of the biomass to produce a clean effluent gas which can be used directly for grain drying or other applications where thermal energy is requir... | 06/15/1982 |
| 4321878 | Secondary hearth crematory A cremator is provided with a primary cremation chamber and a secondary cremation chamber adjacent to and in communication with the first chamber. A method of cremating bodies utilizing the apparatus disclosed wherein a body is eighty percent consumed in ... | 03/30/1982 |
| 4314513 | Method and apparatus for the incineration of stalks, especially of straw Stalks of crop material, especially straw, are incinerated by comminuting them to pieces having a length of substantially 8 to 10 cm, pneumatically transporting the stalks to a separator in which the air is separated from the stalks and the stalks are the... | 02/09/1982 |
| 4308805 | High temperature damper There is disclosed a damper for controlling the flow of high temperature gases to respective hearth chambers of a multiple hearth furnace, for example, the damper being formed of temperature resistant ceramic plate having an air cooled shaft extending dia... | 01/05/1982 |
| 4261268 | Method and apparatus for treating waste material Method and apparatus for treating waste material in a counterflow furnace wherein the material is introduced at one end thereof and the processed material is discharged from the other end, while air is simultaneously introduced thereto and the gases of co... | 04/14/1981 |
| 4248164 | Sludge drying system with sand recycle A process and system to dry wet sewage sludge with hot sand and to burn the dried sludge. The sand is heated in a heating device by burning dried sludge, and the hot sand is mixed with wet sludge in a drying device. Thereby moisture is driven from the wet... | 02/03/1981 |
| 4215981 | Heating or combustion apparatus and method Furnace apparatus and method used to heat or incinerate materials which are being stirred or rabbled under atmospheres of corrosive gases, and which employs a new material of construction for fabricating rabble teeth to impart improved resistance to mecha... | 08/05/1980 |
| 4215637 | System for combustion of wet waste materials A system for drying and burning wet waste materials includes a multiple hearth furnace having an upper, drying zone and a lower, burning zone. Wet waste material is introduced into the upper, drying zone and dried with a stream of hot air, and the stream ... | 08/05/1980 |
| 4213405 | Water-cooled grate A furnace for the combustion of solid fuel is disclosed comprising two juxtaposed grate portions and a passageway for conducting combustion gases from the area above one grate portion to the fuel contained on the other grate portion. One grate portion is ... | 07/22/1980 |
| 4212636 | Hearth structure Structure for an incinerator hearth is disclosed where the drop hole area of the hearth can be constructed entirely of standard shape, and thus readily available, fire brick rather than the special shapes previously necessary.... | 07/15/1980 |
| 4182246 | Incineration method and system The following disclosure teaches ways and means for incinerating organic materials in a multiple hearth furnace equipped with an afterburner. In the furnace, the wastes are pyrolyzed in an oxygen deficient atmosphere which is regulated to only partially c... | 01/08/1980 |
| 4176611 | Method and apparatus for treating waste material Method and apparatus for treating waste material in a counter-flow furnace wherein the material is introduced at one end thereof and the processed material is discharged from the other end, while air is simultaneously introduced thereto and the gases of c... | 12/04/1979 |
| 4145979 | Afterburner assembly A burner assembly for combusting pyrolysis gases includes a chamber, a first cone-shaped conduit connected at its larger end to the chamber and a second conduit mounted to extend through the smaller end of the first conduit to have an open end positioned ... | 03/27/1979 |
| 4050389 | Method and apparatus for incinerating waste material A method and apparatus for incinerating waste material in a multiple hearth furnace having a plurality of vertically spaced hearths wherein waste material is introduced to the furnace at the top thereof and moves downwardly in a generally serpentine fashi... | 09/27/1977 |
| 4046086 | Treatment of waste material containing alkali metals in a controlled atmosphere furnace The invention is directed to method and apparatus for treating waste material containing alkali metal in a counter-flow furnace wherein the waste material to be processed is introduced at one end thereof and the processed material is discharged from the o... | 09/06/1977 |
| 4046085 | Method and apparatus for treating waste material in a counter-current incinerator The present invention is directed to method and apparatus for treating waste material in a counter-flow furnace wherein the material is introduced at one end thereof and the processed material is discharged from the other end, while the gases of combustio... | 09/06/1977 |
| 4013023 | Incineration method and system The following disclosure teaches ways and means for incinerating organic wastes in a multiple hearth furnace equipped with an afterburner. In the furnace, the wastes are pyrolyzed in an oxygen deficient atmosphere which is regulated to only partially comp... | 03/22/1977 |
| 3976018 | Dryer system A fuel dryer system for waste fuel boilers, such as for example those in the sugar cane processing industry where bagasse is used as a primary fuel, in which the dryer comprises an assembled, enclosed, vertical dryer structure of basically cylindrical sha... | 08/24/1976 |
| 3958920 | System for controlling the operation of a multiple hearth furnace A system for controlling the operation of a multiple hearth furnace over a diverse range of operating conditions at a minimum level of energy consumption. Relatively low temperature gases are controllably recirculated from the drying zone to the combustio... | 05/25/1976 |
