Hydrogen flame ionization detector system with ultralow energy consumption and material consumption

Abstract

The invention discloses a hydrogen flame ionization detector system with ultralow energy consumption and material consumption, and belongs to the technical field of gas chromatograph equipment. The detector system comprises a detector body, the detector body comprises a base, a nozzle, a collector, a catalytic oxidation reactor and a thermal insulation layer, the nozzle and the collector are arranged on the base, the collector is located above flame generated by the nozzle, the catalytic oxidation reactor and the base are integrally formed, the catalytic oxidation reactor is located on the outer side of the collector, the outer sides of the base and the catalytic oxidation reactor are sleeved with heat preservation layers, the detector body is used for being matched with the heat exchanger and the electrolysis reactor to detect sample gas to be detected, the base is used for installing the nozzle and the collector, and the nozzle is used for spraying out flames generated in the combustion process of hydrogen and combustion-supporting gas. Heat of tail gas of the detector body and liquefaction latent heat of water vapor in the tail gas are recovered through heat exchange, system energy consumption is reduced, and environment friendliness is achieved.

Description

technical field [0001] The invention relates to the technical field of gas chromatograph equipment, in particular to a hydrogen flame ionization detector system with ultra-low energy consumption and material consumption. Background technique [0002] Flame ionization detector (FID for short) is a widely used detector in gas chromatograph. It is used to test the flame ionization of hydrogen and has the advantages of high sensitivity and low detection limit. [0003] Existing hydrogen flame ionization detectors require hydrogen as fuel gas and hydrocarbon-removing air as auxiliary gas. The cleanliness of gas and auxiliary gas has a significant impact on the noise and detection limit of the detector. It is mainly provided in two ways, one is bottled high-pressure gas, which needs to be replaced frequently and has a high cost of use; the other is a gas generator. Large movement is difficult; hydrogen is produced by electrolysis, and the gas cylinder is used as the gas source. I...

AI Technical Summary

Problems solved by technology

[0003] When the existing hydrogen flame ionization detector is used, hydrogen is used as the gas, and the hydrocarbon-free air is used as the supporting gas. The cleanliness of the gas and the supporting gas have a significant impact on the noise and detection limits of the detector. It is mainly provided in two ways, one is bottled high-pressure gas, which needs to be replaced frequently, and the use cost is higher; the other is gas generator, the hydrocarbon removal air is generally used with an air compressor and a hydrocarbon removal system, and the volume is relatively small It is difficult to move; hydrogen is produced by electrolysis, and the gas cylinder is used as the gas source, and the pressure of the gas cylinder must be paid attention to at all times, and the gas cylinder must be replaced; while the energy consumption of the chromatograph using the air compressor and the hydrocarbon removal system is relatively high , occupying more public resources

[0004] And the working temperature of the existing hydrogen flame ionization detector is above 200°C, which needs continuous heating, which is used to raise the temperature of the detector body, gas and supporting gas, and the combustion heat, tail gas heat and latent heat of liquefaction of product water vapor have not been carried out. Energy recovery, but directly dissipated in the surrounding environment, the system energy consumption increases, and for battery-powered portable chromatographs, it puts a lot of pressure on the battery

[0005] And the water vapor produced by the combustion of the existing hydrogen flame ionization detector is not recovered but directly discharged into the air, which is easy to affect the surrounding working environment

Images