Abstract:
The invention relates to a sampling unit (100) for a liquid sample, preferably for a fuel intended for a combustion engine (2), which sampling unit (100) is adapted to be fitted into a system with temperature variations, which system contains or transports a liquid to be analysed. The sampling device (100) comprises a wall section (104), partly surrounding a cavity (101), which is liquid filled, and an opening (103), through which the liquid in the cavity may flow out of the cavity (101) when the liquid expands at temperature increases and through which the liquid in the system may flow into the cavity (101) when the liquid in the cavity is compressed at a temperature drop. The opening is equipped with a channel (120), which may hold a specified volume of liquid, and which channel (120) is arranged to be in contact with the liquid in the system.
Abstract:
A sulfur breakthrough monitoring assembly for use in a fuel utilization system for detecting sulfur-containing compounds in desulfurized fuel, said monitoring assembly comprising: a heater for heating desulfurized fuel to a predetermined temperature, the predetermined temperature being between 450°C and 600°C, a sulfur breakthrough detector adapted to receive heated fuel from the heater and including at least a reforming catalyst bed for reforming the heated fuel and a plurality of temperature sensors including a first temperature sensor for sensing temperature of the heated fuel before the fuel is conveyed through the reforming catalyst bed and a second temperature sensor for sensing temperature in the reforming catalyst bed, and a controller for determining whether concentration of the sulfur-containing compounds in the fuel exceeds a first predetermined concentration based on temperature outputs from the first and second temperature sensors.
Abstract:
A sulfur breakthrough monitoring assembly for use in a fuel utilization system for detecting sulfur-containing compounds in desulfurized fuel, said monitoring assembly comprising: a heater for heating desulfurized fuel to a predetermined temperature, the predetermined temperature being between 450°C and 600°C, a sulfur breakthrough detector adapted to receive heated fuel from the heater and including at least a reforming catalyst bed for reforming the heated fuel and a plurality of temperature sensors including a first temperature sensor for sensing temperature of the heated fuel before the fuel is conveyed through the reforming catalyst bed and a second temperature sensor for sensing temperature in the reforming catalyst bed, and a controller for determining whether concentration of the sulfur-containing compounds in the fuel exceeds a first predetermined concentration based on temperature outputs from the first and second temperature sensors.
Abstract:
Полезная модель относится к области рентгенофлуоресцентного анализа и может быть использована для определения концентрации серы в нефти, нефтепродуктах и других жидких углеводородах. Рентгенофлуоресцентный анализатор содержания серы в жидких углеводородах, включает кювету для размещения анализируемого вещества, в боковой стенке которой выполнено окно, закрытое прозрачной для рентгеновского излучения пленкой, источник рентгеновского излучения, расположенный сбоку от кюветы со стороны окна, детектор рентгенофлуоресцентного излучения, исходящего от анализируемого вещества, спектральный анализатор выходного сигнала детектора, электронно-вычислительное устройство и блок отображения информации, источник рентгеновского излучения и детектор рентгенофлуоресцентного излучения, исходящего от анализируемого вещества, расположены с одной стороны относительно кюветы. В результате зничительно уменьшается мощность источника рентгеновского издучения и, соответственно, габариты, материалоемкость и стоимость устройства в целом.
Abstract:
An electrochemical sensor for measuring the amount of hydrogen sulphide or thiols in a fluid in a wellbore comprises a temperature- and pressure-resistant housing containing a flow path for the fluids. The fluids flow over one side of a gas permeable membrane made of zeolite or a suitable ceramic material, the other side of the membrane being exposed to a chamber containing a reaction solution which together with the hydrogen sulphide or thiols create a redox reaction resulting in an electrical current dependent upon the amount of hydrogen sulphide or thiols in the fluid.
Abstract:
The invention relates to a method for determining total reactive sulfur in a crude oil or fraction thereof using a mass spectrometer (Fig. 9) or gas chromatograph and mass spectrometer. Selecting fragment ions (1-4) characteristic of reactive sulfur species enables the quantitative determination of total reactive sulfur species (Fig. 5). The use of a low resolution mass spectrometer allows the rapid determination of total reactive sulfur in field or remote locations where more sophisticated instruments are not available.
Abstract:
The present invention relates to a sampling unit (100; 300; 400; 600; 700) for liquid samples adapted to be fitted into a system with pressure variations, which system contains or transports a liquid. The sampling unit comprises a wall section (317; 417; 617; 717), which partly surrounds a cavity (301; 401; 601; 701) filled with liquid, an opening (303; 403; 603; 703) equipped with a blocking element (305; 405; 605; 705; 720), which prevents the liquid from flowing into or out of the cavity at a substantially stable pressure in the system, but allows the liquid to flow into the cavity when the pressure in the system increases from a resting pressure to an operating pressure, and out of the cavity when the pressure in the system drops back from the operating pressure to the resting pressure. The sampling unit may be used to collect a fuel sample.