Apparatus and method to control process to replace natural gas with fuel oil in a natural gas burner
US4140473A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1977 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Jan 13, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N1/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus and method to control a process to replace natural gas with vaporized fuel oil whereby fuel oil is mixed with a gaseous diluent and partially vaporized, liquids separated out, superheated and burned in a natural gas burner without major modification to the burner is disclosed. The control system is: PA1 1. a liquid level controller sensing the liquid level in the separator to automatically control the flow of the fuel oil to the vaporizer, PA1 2. a ratio flow controller sensing the flow of the fuel oil and of the diluent to the vaporizer to automatically control the flow of the diluent to a set ratio of the flow of the fuel oil, PA1 3. a pressure controller sensing the pressure at the vaporizer outlet and downstream overhead to automatically control the heat input to the vaporizer and optionally, PA1 4. a flow control valve set to automatically control the flow of the separator overhead to the burner; also, PA1 5. a temperature controller sensing the temperature of the vapor effluent from the superheater to automatically control the heat input to the superheater. The vaporized fuel-diluent should be superheated to 50-300.degree. F. above the dew point of mixed vapor, p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.