Gas chromatograph manufacturer provides natural gas component analyzer

Gas chromatograph manufacturer provides natural gas component analyzer

Natural gas component analysis gas chromatograph

Using a thermal conductivity detector heating value workstation to analyze the content of various components in natural gas

Calculate calorific value based on content

Gas chromatograph manufacturer provides natural gas component analyzerTThe CD thermal conductivity detector consists of two thermal conductivity wires,

A reference gas of the same type as the carrier gas is continuously introduced to form a detector reference pool,

Another carrier gas is introduced from the chromatographic column to form a detector sample cell,

When no sample passes through the gas chromatograph, the flow rates of the two gases remain equal.

Analysis principle: The heat carried away by gas blowing on two thermal wires is the same, and their resistance values remain stable,

So the output voltage of the Wheatstone bridge remains constant.

When the carrier gas carries the sample into the sample pool, due to the difference in thermal conductivity between the sample and the carrier gas,

As a result, the heat carried away changes, causing a change in the resistance value of the hot wire in the sample cell,

The output voltage of the Wheatstone bridge also changes accordingly

Gas chromatograph principle calorific value version workstation

Chromatographic calorific value analysis calculates the calorific value of gas by analyzing the gas components and using a converted calculation method to determine the content and calorific value of combustible components in the components

Key points of operating procedures for calorimeter:

1. The calorimeter should be placed in a separate room with good ventilation, and the combustion exhaust gas should be discharged outdoors.

2. Confirm the sampling point of the calorimeter, close the standard gas sampling valve, and place the conversion valve in the natural gas pipeline;

3. Check the power supply system and intake sampling pipe of the calorimeter, and ensure that all interfaces are securely sealed;

4. Check that the pressure transmitter reading is normal and confirm that the air inlet pressure and gas inlet pressure meet the operating requirements of the calorimeter;

5. Select the running function, the fault indicator light on the control panel will turn off, and the ready status indicator light will turn on, indicating that the air circuit and the tested gas circuit are normal;

6. Press the ignition button, and the ignition indicator light will turn on. At this time, the combustion furnace should be burning normally. The running status indicator light is on, and the exhaust temperature displayed by the controller keeps rising;

7. After sufficient combustion, the thermal equilibrium reaches stability. The calorimeter starts measuring normally and records the operating status and data;

8. After running, press the stop button to turn off the intake valve and the power supply of the calorimeter.