a low-temperature infrared optical gas analyzer based on immersion diode optocouplers with a speed of less than 0.03 s has been developed to detect pulsed emissions into the atmosphere of explosive mixtures of liquefied natural gas and alkanes with air at a temperature of more than 150 K with the transfer of digitized data to a remote server. The design is described and its characteristics are given in the process of analyzing mixtures of air with pure methane, ethane, propane and LNG of various compositions. It is shown that the speed and operating temperature range of the gas analyzer exceed the parameters of foreign and domestic analogues for monitoring man-made LNG emissions into the atmosphere.

A two-channel analyzer of optically dense flammable aerosol fluxes based on two parallel diode optocouplers with a wavelength of electromagnetic radiation λ = 0.65 and 3.4 μm, a speed of τ ≤ 0.05 s and the transmission of digitized data to a server up to 1200 m away via the RS-485 interface has been developed. Its design and characteristics in the process of detecting particle streams with a diameter of 0.2 to 5000 μm with an optical density of D ≤ 3.5 are described. It is shown that the values of the ratio of wave attenuation coefficients with λ = 0.65 and 3.4 μm to the droplet size calculated on the basis of the theory of radiation scattering Mi are consistent with the experimental ones. The created aerosol analyzer can be used in the express analysis of technogenic airborne emissions of fuel liquids and for the development of large-scale generators of explosive type when creating pulse barriers from clouds of finely dispersed aerosol in the atmosphere.

A low-temperature infrared optical gas analyzer based on immersion diode optocouplers with a speed of less than 0.03 s has been developed to detect pulsed emissions into the atmosphere of explosive mixtures of liquefied natural gas and alkanes with air at a temperature of more than 150 K with the transfer of digitized data to a remote server. The design is described and its characteristics are given in the process of analyzing mixtures of air with pure methane, ethane, propane and LNG of various compositions. It is shown that the speed and operating temperature range of the gas analyzer exceed the parameters of foreign and domestic analogues for monitoring man-made LNG emissions into the atmosphere.

При обеспечении промышленной безопасности объектов топливно-энергетического комплекса для получения и хранения топливных жидкостей (керосина, бензина, мазута, дизельного топлива, сжиженного природного газа) необходима оценка последствий их возможных техногенных выбросов в виде струй и/или разливов на грунт, сопровождающихся образованием топливно-воздушных смесей (ТВС) в атмосфере. Эти смеси могут быть взрывопожароопасными, и разработка экспресс-методов их анализа имеет научное и практическое значение. Данные по эволюции крупномасштабных выбросов ТВС ограничены. Их анализ достаточно сложен, поскольку необходимо дистанционно измерять флуктуирующие концентрации капель и паров ТВС с быстрой (за несколько миллисекунд) передачей данных на удаленный сервер. Сеть устройств для мониторинга выбросов углеводородов должна иметь высокое быстродействие τ  0,03 с, функционировать при скорости газокапельных потоков до сотен метров в секунду и обладать устойчивостью к воздействию импульсов давления газов до 105 Па и электромагнитного излучения промышленной частоты.