Non methane total hydrocarbon chromatograph

The non methane total hydrocarbon chromatograph can effectively and quickly detect trace amounts of carbon monoxide, methane, carbon dioxide, ethylene, ethane, propylene, propane, water methanol, and water in high-purity dimethyl ether. This analysis method uses a TCD detector and a six way valve injection, which complies with relevant national and industry standards. The data analysis is stable and reliable.

　　Non methane total hydrocarbon chromatographAnalysis of the detection of dimethyl ether dosage in liquefied petroleum gas

The main components of liquefied gas are eight or more carbon oxides such as propane, butane, and propylene. Liquefied gas does not contain dimethyl ether, so it is impossible for refinery liquefied gas products to contain dimethyl ether. If dimethyl ether is present in liquefied gas, it is definitely caused by human factors.

The carbon content of dimethyl ether is only one-third of that of liquefied gas, and its combustion heat value is far inferior to liquefied gas. In addition, the mixture of dimethyl ether and liquefied petroleum gas produces toxic waste, and excessive inhalation can cause dizziness and chest tightness. At the same time, it can cause leakage of liquefied gas cylinder valves and severe corrosion of welded gas cylinders. Frequent use of dimethyl ether liquefied gas can easily lead to gas cylinder leakage, resulting in fire and explosion, posing serious safety hazards.

　　Non methane total hydrocarbon chromatographAnalysis of the detection and determination conditions for the amount of dimethyl ether added in liquefied petroleum gas:

Chromatographic column: 30m * 0.32mm * 0.25 μ m

Column temperature: 80 ℃

Vaporization chamber: 150 ℃

FID: 200 ℃ (see Figure 2 for detailed analysis spectrum)

Peak order

1. Air+methane

2. Ethane+Ethylene

3. Propane+propylene

4. Dimethyl ether

5. Isobutane

6. Isobutene

7.正丁烷

8. Male-2

9. Antibutene-2

10 Isopentane

11. n-pentane