Potential safety hazard of chemical industry park how to effectively detect the leakage of combustible gas?

Where are the potential safety hazards in the chemical industry park? Leakage of combustible and explosive gas! Leakage of combustible and explosive gas!? how to detect with traditional methods? How to effectively detect? Sensitivity of detection technology? How to detect with traditional methods? There are basically only two methods: 1 Single gas detector: portable / Portable 2 Gas chromatography (GC) : basically fixed installation, 24-hour operation; Portable GC is not a 24-hour operation Why is the traditional method not suitable for your needs? 1) single gas detector: mobile detection These are basically portable / portable instruments There are too many kinds of dangerous gases that can leak in an industrial park I don't know We need to buy fewer kinds of testing instruments, and we don't know how many meters we need to buy to meet our needs Manual operation does not conform to 24-hour operation The basic technology is to use all kinds of sensors The disadvantage is that the response is too slow, the selectivity is not enough and the sensitivity is poor 2) Gas chromatography: fixed installation or portable operation If gas chromatography is used for gas detection, the problems encountered in the detection are similar to those of single gas detector You need to select the appropriate chromatographic column and detector that may need to be purchased Several instruments to meet all applications, hand-held GC manual participation, it is difficult to serve as a 24-hour operation needs The disadvantage of GC is that the response is slower than the sensor! There is a better detection method? Yes, mass spectrometer There are two types of mass spectrometry installed in mobile or fixed way for gas analysis, namely EI-MS and SIFT-MS there are no disadvantages of single gas detector and gas chromatography, and the requirements for gas type / property are not high They can detect the gas leaked from the industrial park That is to say, Zui is important that EI-MS and SIFT-MS are designed to operate in real-time / online mode and can run automatically all day The number of people involved is very low How to detect effectively? Effective detection depends on the speed and selectivity of detection technology and the results it can provide But when it comes to analysis speed, Zui uses mass spectrometry (in seconds) and single gas detector (in a minute or two) As for selectivity, sensors (poor selectivity can lead to misjudgment Zui bad is a simple example: if you have only 30 minutes to deal with / deal with a dangerous situation, but your analysis system also needs 30 minutes to provide you with a data You'll soon understand what effective (or invalid) testing is Due to the shortcomings of GC and single gas detector, mass spectrometry is the only way to be considered Sensitivity and selectivity of detection technology? • single gas detector: ppm level detection (at the concentration of PPM, many gases may have reached the level of spontaneous combustion and self explosion), low selectivity leads to misjudgment • gas chromatography (GC): ppb ppm level detection (the analysis time is slow, the concentration may have been limited with the long analysis time!) has high selectivity, accumulation to the risk limit, and high selectivity • mass spectrometry: ppt ppb level detection (with fast analysis time, in case of danger, mass spectrometry can allow effective implementation of corresponding measures), with high selectivity Small conclusion in terms of effective analysis, selectivity, sensitivity of detection method and selection automation, mass spectrometry may be the only option for Yi How to decide which mass spectrometry to use? What are the spontaneous combustion / explosive gases in the chemical park? In this way, EI-MS is enough SIFT-MS is a better choice if the understanding of potential flammable / explosive gas may not be clear What are the other considerations? Installation requirements? What is the purpose of procurement? • large area of the park: fixed installation requires many mass spectrometers Mobile type (vehicle mounted installation may be more economic benefit; want to know the type and source of leaked gas?; or just want to know whether the whole park is safe or not? Is there any hidden danger? In another case, Samsung in South Korea has installed 5 sets of SIFT-MS for direct detection in another chemical Park; the other plan is to put SIFT-MS in the car and conduct sampling Tour/ Analysis, as shown in the following figure: alternatively, EI-MS mass spectrometry (with battery) is placed in the car for direct patrol monitoring (without sampling), as shown in the following figure: if you are clear about the chemical materials used in the park, EI-MS is enough for use, and the front installation requires Mobile type Each dangerous goods (flammability / explosibility) will generate one or more signals The strength of the signal through the mass spectrum represents the concentration of the dangerous goods When the concentration exceeds the set threshold, the mass spectrum will send instructions to the user, and then take corresponding measures Ecosys-p product introduction · integrated thermal analysis technology · detection limit reaching ppt level · optional remote infinite control function · independent data file generation for each point, automatic report, automatic calibration (optional) · long distance sampling · unattended operation · independent and portable measurement technical parameters · power supply: 100 ~ 240v170w · battery pack: 24V 8 hours continuous operation · I / O: 4 analog output ports, 2 analog input ports, 2 digital input ports, 2 digital output ports · detection limit: ppt level · channel number: 64