Rapid cooling down method for regenerative thermal oxidizer
US6164962A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1997 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | May 12, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D19/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of cooling a regenerative thermal oxidizer down rapidly includes the steps of increasing the cycle time of the heat exchangers once a decision has been made to shut the regenerative thermal oxidizer down. By increasing the cycle time, the regenerative thermal oxidizer rejects more heat from the system. That is, the efficiency of the system goes down, and more heat is lost. In this way, the system approaches an ambient temperature much more quickly then in known systems. In one method of performing this invention, the cycle time is increased as much as possible, and as rapidly as possible while monitoring the outlet temperature on the outlet gas. The cycles are reversed only when the outlet temperature approaches a maximum safe operating temperature. In a second method, the cycle times are increased in pre-programmed steps. By utilizing the present invention, one is able to cool a regenerative thermal oxidizer to ambient temperatures in less than half the time of the prior art systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.