Automatic distillation apparatus
US4528635A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1982 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Jun 7, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D3/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A microprocessor controlled distillation analyzer for petroleum products performs, computes, displays and records distillation data. An interactive/keyboard display and printer system reports and records test conditions and prompts user inputs to define test parameters. Before the initial boiling point, the heater is automatically controlled in two time intervals. Following the initial boiling point, the heater is controlled to keep the monitored distillation rate within a predetermined range. Upon attaining an automatically calculated volume of distillate, the final heat is incremented to a programmed level. In one mode, the end point is automatically detected by monitoring vapor temperature for a decline, followed by the cessation of meniscus movement to terminate the test. After measuring the residue, the analyzer automatically recomputes temperatures at a series of percentage volumes of evaporated sample. An IR beam meniscus detector is driven by a stepping motor screw-drive mechanism actuated via the microcomputer to find the initial meniscus position and track the rising meniscus. The vapor temperature sensor emergent stem error is compensated for by a platinum resistive elem…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.