Method and apparatus for controlling auxiliary fuel addition to a pyrolysis furnace
US4517906A · kind A · utility
16Cited by
10References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1983 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Aug 30, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2237/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A two-stage starved air furnace system is controlled to simultaneously achieve desired temperatures and percent stoichiometric air operation in the primary stage by modulating transformation relay functions acting upon measured temperature deviations to change both primary combustion air and primary auxiliary burner operation. At the set-point value of percent stoichiometric air, the relay functions are modulated in reverse direction to satisfy changing heat demands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.