Product Specifications
General Gas Chromatograph, Gas Analysis Gas Chromatograph (5-valve/6-column) GC-7860-DW, Gas Analysis Gas Chromatograph (Top Configuration) GC-7860-DW Analysis Solution 7860-56318, System Configuration: 5-valve/6-column (packed column, capillary column)/TCD1, TCD2, FID1 Detector
Product Details
General Gas Chromatograph
Gas Chromatograph with Five Valves and Six Columns (GC-7860-DW)Gas Chromatograph (Top Configuration) GC-7860-DW, Analysis Solution 7860-56318
System Configuration: 5 valves/6 columns (filling column, capillary column)/TCD1, TCD2, FID1 detectors; (TCD2 detector can be expanded to install FPD detector or FID2 detector)
Analysis Components:
Hydrogen GasOxygen (Argon), NitrogenCarbon DioxideCarbon Dioxide, C1-C5 Hydrocarbons, Alkanes above C6
Expandable H2S and Total Sulfur, C6-C16 Alkanes Detection
The E•Prod scientific instrument series features the GC-7860 DW gas chromatography (GC) system for gas analysis, which consists of three channels. Channel A is equipped with one sample injection ten-way valve featuring a backflush function.
A ten-way valve with sequential reverse blow function
2. Composed of three chromatographic columns and a TCD detector, it analyzes and detects components such as H2, CO2, CO, N2, O2, and C1; Column 1 is used to backflush and vent components above C2, and pre-separate the mixed components (H2, CO, N2, O2, C1) as well as CO2. Column 2 further separates these components. After the mixed components enter Column 3, Valve 2 operates to change the column sequence, and CO2 is backflushed to the TCD detector. The mixed components then flow out after the column and enter the TCD detector. If helium is used as the carrier gas, the total content of oxygen and argon can be obtained.
Channel B consists of a sample ten-way valve 3 and a chromatographic column, used for detecting and analyzing components such as H2/He. After H2 and He pass through the chromatographic column, the ten-way valve resets and backflushes the remaining components to shorten the analysis time.
Channel C
Option 1: Comprises an automatic sampling six-way valve 4 and an order-changing six-way valve 5, along with two capillary chromatography columns. After sampling, most of the sample is vented through the分流injection port, while a small amount passes through valve 5 into column 5. Components before C5 are first eluted from column 5 into column 6, where they are retained. When components above C6 in column 5 have not yet eluted, valve 5 switches to backflush position, changing the order of columns 5 and 6. The portion above C6 is then flushed out, passed through the FID for detection, and its total content of alkane above C6 is determined. Components before C5 are separated in column 6 and sequentially detected by the FID.
Option Two: Comprises an automatic sample valve, an Al2O3 capillary chromatography column, and a FID detector, capable of analyzing and detecting C1-C6 in mixed gases.
If testing for C3-C14 or H2S, COS, CH3SH, (CH3)2S, etc., the configuration will vary.
Configuration is for reference only. For specific analysis requirements, please call to explain; we will provide you with a comprehensive analysis solution......
Data processing and quantificationNatural GasCompleted with a dedicated workstation, generating parameters such as calorific values (molar, mass, volume), relative density, and Viscosity index for each component, with valve switching performed by the chromatography instrument's main unit.
Minimum detection concentrations for each component: permanent gases 0.005% to 100%; organic hydrocarbons 1 ppm to 100%.
Application Scope and Testing Indicators:
Applicable to:Natural GasLiquefied Gas, Flue Gas, Coalbed GasBiogasRefinery gases analysis including overhead gas, FCC cracking gas, fuel gas, recycle gas, and various other gas mixtures; high-temperature, high-pressure catalytic cracking gas on-line systems
Standard: UOP 539, ASTM D1945, ASTM D1946, GPA 2261, GPA 2286, GPA 2177, GB/T 13610-2003
Minimum Detection Concentration: Permanent Gas TCD 50ppm, Organic Hydrocarbons FID 1ppm
Performance Features:
Key Features and Advantages
1. High column load, high degree of automation; one-time sampling can yield refiner gas orNatural GasThe content of each component.
2. H2/He is detected individually in a single channel, while O2 and N2 are separated for detection; an option is also available to use H2 and N2 as carrier gases for dual-channel TCD detection.
3. C06 and above alkane is detected as a separate peak, while C1-C5 alkane achieves baseline separation.
4. Three detector channels, TCD/FID/FPD detectors can be freely combined to meet the online detection of complex industrial gases.
5. Durable filling columns, maintenance-free system processes, enhancing work efficiency while simplifying the analysis of complex samples and improving operability.
6. Refinery gasNatural GasThe shortest analysis time available is within 10 minutes.
7. An additional third detector (FID2) can be included, with a capillary column channel for expansionNatural GasAnalysis (C3-C16).
8. An additional third detector (FPD detector) can be added to analyze H2S and total sulfur, total organic sulfur, etc., with a minimum detection concentration of 0.1 ppm.
Chemical Workstation ProvidedNatural GasCalibration software (for calculating specific heat of moisture, specific heat, volume heat, relative density, and Wobbe index)
10. Suitable for applications requiring separation of H2, CO2, CO, N2, O2, C1-C5 hydrocarbons, and C6+ hydrocarbons.
Thermal Conductivity Detector (TCD)
Semidiffusion structure
Power is controlled using a constant current method.
◎Sensitivity: S≥3000mv.ml/mg (n-hexadecane/iso-octane) for HTCD High Sensitivity Thermal Conductivity Detector; Digital Amplification options of 2x, 4x, 6x, or 8x.
Baseline Noise: ≤10μv
Baseline Drift: ≤30μv/30min
Linear: ≥105
Airflow velocity stability: ≤1%.
Optional capillary column connecting components
Electron Capture Detector (ECD)
Detection Limit: ≤1×10^-14 g/s
Linear Range: 104
Radionuclide: Ni-63
Flame Photometric Detector (FPD)
◎Detection Limit: 5×10^-12 g/s (S)MethylphosphorusChina (CN)
5×10-13g/s（P）(Methanol, Sulfur, PhosphorusChinese P)
Linear Range: 105 (P) 103 (S)
Maximum operating temperature: 350℃
◎Testing Method: Air -Hydrogen GasFlame Spectroscopy
Photodetector: Top-end Photomultiplier Tube
◎Max. Amplifier Tube Voltage: -700V
Nitrogen-Phosphorus Detector (NPD)
● Detection Limit: (N) ≤ 5×10^-12 g/s; (P) ≤ 5×10^-12 g/s
Application Cases:
1. Gas Analysis in Transformer Oil (GB/T 17623-1998, DL/T 722-2000, DL/T 703-1999)
2. Coal Mine Underground Safety Gas Analysis by Gas Chromatography (capable of continuous 24-hour cyclic sampling and analysis at 32 points)
3. Air Quality (TVOC, Benzene, Total Hydrocarbons, and Non-MethaneTotal hydrocarbons analysis (compliant with GB/T 50325-2001, GB/T 18883-2002, GB 16927-1996); workshop exhaust gas, flue gas analysis, as well as VOCs, benzene, and other pollutants in flue gas.MethaneTotal hydrocarbons 24/7 continuous on-line analysis
4. Water Quality Analysis (Compliant with GB/T 5750-2006)
5. Natural GasIndustrial gas analyses including refinery gas, cracking gas, artificial gas, etc. (Simple single-valve type, wide-spectrum double-valve four-column economic type, wide-spectrum triple-valve four-column practical type, wide-spectrum five-valve six-column premium type, triple-valve four-column TCD type, and quadruple-valve five-column dual-TCD type, etc.; compliant with GB/T 13610-2003, UOP 539, ASTM 1945, ASTM D 1946, and GPA 2261; available for special customization according to customer's specific samples)
6. GasBiogasAnalysis (H2, O2, N2, CH4, CO, CO2 six components, unique single valve sequential transformation)
7. Natural GasSulfur Compounds (unique single-valve sequential changeover backwashing method, detecting H2S, CSO, SO2, and total sulfur)
8. High Purity Gas Analysis, Electronic Industry Gas Analysis (minimum detection concentration up to 10ppb and above)
9. Benzene in gasolineMethylbenzeneAnalysis (Compliant with ASTM D3606; SH/T 0713-2002)
10. Analysis of Oxygenated Compounds in Gasoline (Compliant with AZTM D4815 and SH/T 0633-1998)
11. Benzene in gasolineMethyl benzeneParaffin Analysis (Conforms to ASTM D5580-1995, SH/T0693-2000)
12. SOA analysis of hydrocarbon composition in gasoline, PONA analysis of individual hydrocarbons in gasoline (detection of saturated hydrocarbons, olefins, aromatics, and benzene content; using a specialized olefin adsorption trap; conforms to SH/T 0741-2004)
13. Simulated Distillation Gas Chromatography (Compliant with SH/T 0558, ASTM D5307, D3710, D6352, D2887)
14. Blood Ethanol Analysis (Compliant with Public Security Ministry Standard GA/T105-1995)
15. Cigarette Rod VOC (in compliance with YC/T 207-2006), Drug Residue Analysis, Epoxy in Medical DevicesEthaneMeets GB/T 16886.7-2001, solvent residue detection in packaging materials
16. Special Gas Chromatography for Greenhouse Gases (CO2, CH4, and N2O, 0.1ppm - 100%)
17. Catalytic Evaluation, Online High-Pressure High-Temperature Analytical System (Chromatography system customized as required)
18. Process Gas Chromatograph (Industrial Chromatography), Sample Pretreatment, Analytical Cabin Construction, Multi-Channel Sample Selection (supports up to 32 channels)
