Analysis of calorific value of natural gas

1. Instrument introduction: The measurement of the special chromatograph system for natural gas calorific value analysis developed by our company is carried out on two channels. Channel I is used for analysis and channel II is used for analysis of , , , and ~ saturated hydrocarbons. After the sample is injected through the valve, it is separated by the chromatographic column on channel I and detected on channel D. The subsequent components are backflushed and evacuated. At the same time, on channel II, the sample enters the separation system and undergoes pre-column separation, changing the column flow direction so that the heavier components flow out as a peak. Light hydrocarbons and permanent gases are sent to the column and isolated, allowing them to flow out of the column, enter the column and be Isolation, then separation and detection from the column, and finally, flow out from the column and detection.
The data processing and quantification of this instrument are completed by a special natural gas workstation and the calorific value of each component (molar calorific value, mass calorific value, volume calorific value, and Wobbe index) and other parameters are obtained. The switching of the valve is performed by The chromatograph host is completed.
2. Instrument features:
This analysis system is simple and convenient for the analysis and quantification of all components of natural gas, using the normalization method with correction factors or the external standard method for quantification.
This system flow is suitable for all applications requiring the separation of hydrocarbons.
After expansion, the system can analyze ~ and + monomer hydrocarbon content (D detection) in natural gas.
The two detector signal channels, the thermal conductivity system signal and the hydrogen flame system signal, are independent of each other and can be used simultaneously or separately.
It is equipped with multi-component standard gas mixture in / liter aluminum bottle and corrosion-resistant stainless steel sampling valve to facilitate analysis and detection.
The dual-channel chromatography workstation supports operating system chromatography analysis spectrum storage, data processing, and report printing at will.
It can be equipped with a special chromatography workstation for natural gas analysis, which can calculate technical parameters such as natural gas calorific value, Wobbe number, relative density, and compression factor.