Online measuring system, method and application for semi-volatile organic compound in gas phase
US11467135B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 28, 2020 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Jan 19, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An online measuring system for the semi-volatile organic compounds in the gas phase is provided in the disclosure. The system comprises a filter head, a three-way electromagnetic valve, an enrichment-thermal desorption device, a two-position six-way valve, a mass flow controller, a gas pump, a gas chromatograph, a primary capture trap, a secondary focus trap, and a gas supply and pressure control system, the inlet of the filter head is connected to be provided with a sampling object, the outlet of the filter head is connected with the port B of the three-way electromagnetic valve through a passivated stainless steel tube, the port C of the three-way electromagnetic valve is connected with the inlet of the primary capture trap through a passivated stainless steel tube, and the port A of the three-way electromagnetic valve is connected to the gas supply and pressure control system through a passivated stainless steel tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.