Method for use dependent complete evaporation of liquid nitrogen oxide
US4676200A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Sep 4, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2265/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for the consumption dependent complete vaporization of liquid nitrogen oxide is shown where the liquid nitrogen oxide under pressure is passed through a buffer tank and is charged into a falling film evaporator. The unevaporated residual amount of nitrogen oxide is then subjected to heat in an after evaporator in order to completely vaporize the nitrogen oxide. The combined streams are then led out of the falling film evaporator and after evaporator through at least one safety trap to the ultimate take-off points. This results in the charge of the liquid material to the falling film evaporator being controlled through the pressure in the conduit system between the falling film evaporator and the points of utilization and permits a constant, previously determined pressure to be maintained in the system independently of the amount of material withdrawn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.