Detailed information of SP-3420A gas analysis dedicated gas chromatograph:
Scope of application:
Rapid analysis of water gas, semi water gas, coke oven gas, artificial gas, converter gas, blast furnace gas, biogas, ammonia synthesis converter process gas, etc; Also applicable to H2 Analysis of CO2, O2, N2, CO, CH4 mixed gases
System configuration: 1 valve (sequential reverse blowing method)/2 column (packed column)/TCD detector
Analysis components:
Hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane
Minimum detection concentration: TCD 50ppm
Analysis process:
Application spectrum:


Main features and advantages
1. High column load and high degree of automation
2. Single channel analysis
3. Durable filling column
4. 10 minute analysis time (can be shortened, sacrificing separation)
5. The chemical workstation provides natural gas calculation software (to obtain molar heat generation, mass heat generation, volume heat generation, relative density, and Wopo index)
6. Suitable for all applications that require separation of H2, CO2, CO, N2, O2, C1 hydrocarbons.

Scheme Introduction: Sequential Transformation Backblowing Method (Automatically Completed, No Manual Need)

Configure 1 ten way valve and 2 chromatography columns, TCD detection; The ten way valve has the functions of sample injection and sequential blowback; Column 1 is a CO2 separation column, which can divide the sample gas into two parts. One part is CO2, and the other part is a mixed gas including H2, O2, N2, CO, CH4. This mixed gas is separated by column 2. When the mixed gas leaves column 1 while CO2 remains in column 1, the ten way valve changes the column sequence. Column 1 is in a backflush state, and the backflush CO2 enters the TCD detector; This configuration has strong practicality, high analysis efficiency, and detection sensitivity of 0.005% to 100%
Sequential reversal refers to the process of changing the series sequence of two chromatographic columns, with one column changing the direction of the carrier gas flow; This connection method is specifically applied to the analysis of certain components in mixed gases that cannot enter another chromatographic column. The method in this example avoids the entry of CO2 into another analytical column (high concentration CO2 entering column 2 causes column 2 to fail), and extends the service life of the column (the imported instrument chromatography column has a service life of 8 months, and this process is configured with a chromatography column for production control with a service life of up to 2 years). And the analysis time can be shortened according to user needs.
The system has an economical and reasonable configuration, simple operation and maintenance, high analysis efficiency, stable performance, and high repeatability. The analysis time can be controlled within 10 minutes.
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