A detection device and detection method for hydrogen sulfide in liquid oil products

Abstract

The invention discloses a detection device for hydrogen sulfide in a liquid oil product. The device comprises a gas purifying conveying unit, a sample handling unit, a sample purifying unit and an electrochemical detector which are sequentially connected and arranged, wherein the gas purifying conveying unit comprises an adjustable gas flow meter, a silica gel drying tube and an oil-free diaphragmvacuum pump which sequentially communicate through pipelines; the sample handling unit comprises a sample handling tube and a first gas buffering tank; the sample treating tube is arranged in a heating sleeve; standby gas branches are connected in parallel with two ends of the sample handling tube; the sample purifying unit comprises a liquid eluting bottle, a second gas buffering bottle, a solideluting bottle and a second filtering membrane set; the liquid eluting bottle, the second gas buffering bottle and the solid eluting bottle are arranged in a cold bath bottle; the electrochemical detector is an electrochemical detector. The device meets the demand on detecting hydrogen sulfide in the liquid oil product and is capable of effectively removing the influence of other sulfur containing substances on the detecting result; the device is quick to detect; the detecting result accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical detection, in particular to a detection device and a detection method for hydrogen sulfide in liquid oil products. Background technique [0002] Hydrogen sulfide is the simplest of the sulfur hydrides. H at room temperature 2 S is a colorless, highly toxic gas with the smell of rotten eggs. It should be used in a ventilated place and protective measures must be taken. It is an inhalation health hazard, a strong neurotoxin, and has a strong stimulating effect on the mucous membrane. It is easy to be detected at a low level, but it can make people lose their sense of smell at a high level. For example, at a concentration of 150 ppm, within 2-5 minutes That is, loss of smell, if not evacuated in time, it will be fatal soon. Hydrogen sulfide widely exists in crude oil and petroleum products. Hydrogen sulfide in crude oil is contained in itself. Hydrogen sulfide in petroleum products is not only co...

AI Technical Summary

Problems solved by technology

Most of the existing hydrogen sulfide detection methods are methods for detecting gaseous hydrogen sulfide, and most methods are not suitable for the detection of hydrogen sulfide content in liquids. Even if they are modified and adopted, hydrogen sulfide is blown out for detection. Impurity gases also greatly interfere with the detection of hydrogen sulfide. Therefore, how to simply and quickly detect the content of hydrogen sulfide in the liquid phase and eliminate the interference of various impurities, especially the detection of hydrogen sulfide in complex liquid samples, has always been a key issue in the development of detection methods. The direction of equipment research and development

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