Feed control system for processing equipment |
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| 申请号 | US3638328D | 申请日 | 1970-08-27 | 公开(公告)号 | US3638328A | 公开(公告)日 | 1972-02-01 |
| 申请人 | FULLER CO; | 发明人 | SOLT PAUL E; | ||||
| 摘要 | An arrangement for controlling the supply of material to processing equipment such as a fluidized bed reactor. The system employs a material-regulating valve which is responsive to the flow of gaseous fluid through the system. The gaseous fluid entrains the material and feeds it to the processing equipment. A condition such as the temperature of the processing equipment is continuously monitored and compared to a standard. The difference between the standard and the actual condition is used to control a variable restriction in the gaseous fluid supply line which in turn controls the amount of material admitted to the gaseous fluid supply line. | ||||||
| 权利要求 | 1. In combination with thermal-processing equipment, apparatus for supplying material to be processed to the thermal-processing equipment comprisinG: means defining an entrainment chamber having a material inlet port, a gaseous fluid inlet and a gaseous fluid-material outlet; first conduit means connected to said gaseous fluid inlet for conducting gaseous fluid to the entrainment chamber; second conduit means connecting said gaseous fluid-material outlet to the thermal-processing equipment; means associated with said material inlet port and responsive to the flow of gaseous fluid through said first conduit means for controlling the introduction of material into said entrainment chamber; pressure differential means mounted in said first conduit means for sensing the flow of gaseous fluid through said first conduit means and communicating with said means for controlling the introduction of material into the entrainment chamber for effecting said control; and means responsive to a condition in the thermal-processing equipment for controlling said pressure differential means to thereby regulate the introduction of material into the entrainment chamber and the amount of material supplied to the thermal-processing equipment. 2. The combination of claim 1 wherein said pressure differential means includes a variable restriction. 3. The combination of claim 2 wherein said apparatus further comprises means for sensing a condition in the thermal-processing equipment and said means responsive to a condition in the thermal-processing equipment includes means for comparing the sensed condition in the thermal-processing equipment to a standard temperature and motor means for regulating said variable restriction in response to a deviation from the standard. 4. A method of controlling the supply of material fed to thermal-processing equipment comprising the steps of establishing a flow of gaseous fluid to the thermal-processing equipment, introducing material for direct entrainment with the flow of gaseous fluid, continuously sensing variations in the flow of gaseous fluid to the thermal-processing equipment, controlling the direct entrainment of material in the gaseous fluid in response to variations in gaseous fluid flow, sensing a condition in the thermal-processing equipment, and regulating the control of direct entrainment of material in response to the condition in the thermal-processing equipment. 5. In combination, a material processor, means for sensing a condition in the processor, and apparatus for supplying material to be processed to the material processor, said apparatus comprising means defining a material entrainment chamber having a material inlet adapted to be connected to a source of material, a gaseous fluid inlet and a gaseous fluid-material outlet; first conduit means for supplying gaseous fluid to said gaseous fluid inlet; second conduit means connecting said gaseous fluid-material outlet to said material processor; means for sensing fluid flow in one of said first and second conduit means; means associated with said material inlet and responsive to the fluid flow in one of said first and second conduit means for controlling the introduction of material into the material entrainment chamber; and means responsive to said means for sensing a condition for regulating said means for sensing fluid flow. 6. The combination of claim 5 wherein said means for sensing the fluid flow includes a variable restriction mounted in one of said first and second conduits whereby a differential pressure is established across the variable restriction and said means for controlling the introduction of material into the material entrainment chamber includes valve means responsive to the differential pressure across said variable restriction. 7. The combination of claim 6 wherein said apparatus further comprises motor means for opening and closing said variable restriction and said means for sensing a condition in the material processor includes comparator means for comparing the sensed condition to a standard and controlling said motor means in response to a deviation from the standard. 8. ThE combination of claim 7 wherein said variable restriction is mounted in said first conduit. 9. The combination of claim 8 wherein said means for sensing a condition is a temperature measuring means and said motor means opens said variable restriction when the temperature in the material processor is greater than the standard. 10. The combination of claim 9 wherein said material processor is a fluidized bed reactor. |
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