Process for cooling and fluidizing
US4422302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1982 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Aug 3, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D3/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a process for cooling and fluidizing a bed of particles by passing a cryogen through the bed, said bed being first cooled to a desired operating temperature, the improvement comprising: PA0 (a) admixing a liquid cryogen and an inert gas, said gas being at ambient temperature, at a point external, but proximate, to the bed to provide a mixture of liquid cryogen and gas at a temperature sufficiently low to maintain the bed at about the desired operating temperature; PA0 (b) introducing the mixture from step (a) into at least two heat transfer coils connected in parallel and located in the bed whereby the desired operating temperature is imparted to the bed, and the liquid cryogen in the mixture vaporizes; and PA0 (c) removing the mixture of vaporized liquid cryogen and gas formed in step (b) from the coils and introducing the mixture into the bed to fluidize the bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.