Methanol injection system and method to prevent freezing of a natural gas pipeline
US6981848B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 29, 1996 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Feb 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1189
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for injecting an injection fluid into a pipeline includes an injection pump, a timer for initiating sequencing of the pump, a control valve for controlling the flow of pressurized fluid to power the injection pump, a controller for controlling operation of the control valve, and an electric motor responsive to the controller for rotating a cam on the motor shaft to open and close the control valve. The injected fluid may be methanol, so that the system automatically injects methanol into a pipeline which transmits natural gas. In one embodiment, the system includes a temperature sensor and a flow sensor for inputting signals to the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.