Special gas chromatograph for whole component analysis of natural gas

Product Introduction

thatinstrumentAnalyze system configuration4 valves and 5 columns, consisting of two sampling/blowback ten way valves, two bypass switching six way valves, five chromatography columns, and two high-sensitivity TCD detectors, can provide the content of saturated hydrocarbons C1~C50, H2 and He in the full concentration range, as well as the content of CO2, H2S, N2, O2, and C6+boiling point above hexane (as a blowback peak) in natural gas.
The instrument process meets and exceeds both requirementsThe methods of ASTM1945 and GPA2261.
Working Principle:
The measurement of this system is conducted on two channels, channelChannel I is used for analyzing H2 and He, while Channel II is used for analyzing N2, O2, CO2, H2S, and saturated hydrocarbons C1 to C5.
After the sample is injected through the valve, it enters the channelAfter separation on column 5, H2 and He were detected on TCD1, and the subsequent components were backflushed and vented. At the same time, the sample enters the separation system on channel II and is separated by pre column 1, changing the column flow direction to allow C6 and heavier fractions to flow out as a peak. Light hydrocarbons and Yongjiu gases are sent to column 3 and isolated, allowing C30-C50 to flow out of column 2, C1, N2, and O2 to enter column 4 and be isolated, while C2 and CO2 are separated and detected from column 3, and C10, N2, and O2 flow out of column 4 for detection.
The processing and quantification of data are completed by a dedicated natural gas workstation, and the calorific values of each component (molar calorific value, mass calorific value, volume calorific value, and Wopo index) and other parameters are obtained. The switching of valves is completed by a reverse control workstation.

Application scope and detection indicators:

Applicable to: natural gas Analysis of refinery gas (requiring change in chromatographic column type), etc
Execution standard:UOP539、ASTM D1945 GPA2261 GB/T 13610-2003
Small detection concentration: permanentJiu gas TCD 50ppm, organic hydrocarbon FID 1ppm

Performance characteristics:

1. The instrument system is a multidimensional chromatographic analysis method using a fully packed column and full TCD, with high column load and high degree of automation.
2. One injection can obtain the content of various components of natural gas.
3. Within the linear range, it is not affected by the injection volume and does not have strict requirements for injection.
4. The two channels are independent of each other. If there is no need to detect the content of H2 and He, only channel II can be used.
5. N2 and O2 are detected separately
6. This analysis system is for the full component analysis of natural gas, with simple quantification and convenient use of normalization method with correction factors or external standard method for quantification.
7. The system process is suitable for all applications that require the separation of N2, O2, CO, CO2, CH4, and C2 to C5 hydrocarbons.
8. After expansion, the system can analyze the monomer hydrocarbon content of C10-C140 and C14+in natural gas (FID detection).

technical indicators

Application case:

1. Gas analysis in power transformer oil (GB/T 17623-1998, DL/T 722-2000, DL/T 703-1999)
2. Gas chromatography method for safety gas analysis underground in coal mines (capable of 24-hour continuous sampling and analysis of 32 points)
3. Air quality (TVOC, benzene, total hydrocarbons, and non methane total hydrocarbons) analysis (in accordance with GB/T 50325-2001, GB/T 18883-2002, GB16927-1996); Workshop exhaust and flue gas analysis, as well as 24-hour uninterrupted online analysis of VOCs, benzene, and non methane total hydrocarbons in flue gas
4. Water quality analysis (in accordance with GB/T 5750-2006)
5. Analysis of various industrial gas types such as natural gas, refinery gas, cracking gas, artificial gas, etc. (simple single valve type, broad-spectrum process dual valve four column economic type, broad-spectrum process three valve four column practical type, broad-spectrum process five valve six column type, three valve four column TCD type, four valve five column dual TCD type, etc.); Compliant with GB/T 13610-2003, UOP539, ASTM1945, ASTM D 1946, and GPA2261; Can be customized according to the specific sample of the user)
6. Gas and biogas analysis (six components of H2, O2, N2, CH4, CO, CO2, unique single valve sequential transformation)
7. Sulfides in natural gas (using a unique single valve sequential reverse blowing method to detect H2S, CSO, SO2, and total sulfur)
8. High purity gas analysis, electronic industry gas analysis (small detection concentration can reach 10pppb or more)
9. Analysis of benzene and toluene in gasoline (in accordance with ASTM D3606); SH/T 0713—2002）
10. Analysis of oxygen-containing compounds in gasoline (compliant with AZTM D4815 and SH/T 0633-1998)
11. Analysis of benzene, toluene, and aromatic hydrocarbons in gasoline (in accordance with ASTM D5580-1995, SH/T0693-2000)
12. SOA analysis of hydrocarbon group composition in gasoline and PONA analysis of monomer hydrocarbons in gasoline (detection of saturated hydrocarbons, olefins, aromatics, and benzene content using a specially designed olefin adsorption trap; compliant with SH/T 0741-2004)
13. Simulated Distillation Gas Chromatography (in accordance with SH/T 0558, ASTM D5307, D3710, D6352, D2887)
14. Blood ethanol analysis (compliant with the safety department standard GA/T105-1995)
15. Cigarette strips VOC (compliant with YC/T 207-2006), drug residue analysis, ethylene oxide in medical devices (compliant with GB/T 16886.7-2001), solvent residue detection in packaging materials
16. Greenhouse gas specific gas chromatography (CO2, CH4, and N2O, 0.1ppm -100%)
17. Catalytic evaluation, high-pressure and high-temperature online analysis system (customized system chromatography according to requirements)
18. Process gas chromatography (industrial chromatography), sample pretreatment, analysis cabin construction, multi channel sample selection (supporting 32 channel sample selection), etc

Update time: September 4, 2020 16:48:45