Measurement and prediction of dew point curves of natural gas mixtures

2012 ◽  
Vol 334 ◽  
pp. 1-9 ◽  
Author(s):  
Vasiliki Louli ◽  
Georgia Pappa ◽  
Christos Boukouvalas ◽  
Stathis Skouras ◽  
Even Solbraa ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Mixtures ◽  
Dew Point

Measurement of the Hydrocarbon Dew Point of Real and Synthetic Natural Gas Mixtures by Direct and Indirect Methods

2009 ◽  
Vol 23 (3) ◽  
pp. 1640-1650 ◽  
Author(s):  
Andrew S. Brown ◽  
Martin J. T. Milton ◽  
Gergely M. Vargha ◽  
Richard Mounce ◽  
Chris J. Cowper ◽  
...  
Keyword(s):  
Natural Gas ◽  
Gas Mixtures ◽  
Dew Point ◽  
Indirect Methods ◽  
Synthetic Natural Gas ◽  
Direct And Indirect Methods

scholarly journals ANALYSIS OF THE PROCESS OF WATER VAPOR CONDENSATION WITHIN GAS ATMOSPHERES AND COMBUSTION PRODUCTS

2017 ◽  
pp. 3-18 ◽  
Author(s):  
B.S. Soroka ◽  
V.V. Horupa
Keyword(s):  
Water Vapor ◽  
Relative Humidity ◽  
Natural Gas ◽  
Saturation Temperature ◽  
Combustion Products ◽  
Gas Mixtures ◽  
Vapor Condensation ◽  
Dew Point ◽  
Saturation State ◽  
Gas Combustion

Water vapor is the most important working medium by the processes of energy generation and conversion. The H2O content in gases and gas mixtures serves as a standard of their desiccation by technological processes. The presence of vapor in the air-oxidizer provides a reduction of harmful substances formation by combustion. The values characterizing the saturation state: the dew point tdew and the wet bulb thermometer twb temperature are used to evaluate an approximation degree of the wet gas system (any air, gas mixtures or combustion products) to the condensation state. The values of these parameters have been determined for moist air in dependence on the basic temperature and the relative humidity of an air. The lower are the temperature values tdew, twb, the wider is the region of H2O existence in the vapor phase. The EUROSTAT’s gas fuels list includes the natural gas (NG), blast furnace gas (BFG), coke oven gas (COG). Calculations of dew point values of the combustion products for the gas fuels: NG, COG, BFG has been carried out in dependence on the characteristics of the combustion air: the oxidizer excess factor l, the temperature ta and the relative humidity ja. The dew point tdew values have been found under standard conditions for the combustion products of the listed gas fuels, presented by stoichiometric (l = 1.0) mixtures with dry air: pure methane, NG, COG, BFG. The tdew values make — respectively 59.3; 58.5; 11.1; 61.5. In the case of saturated air as an oxidizer at temperature of 25 °C, the dew point for the combustion products of the listed fuels makes the folloving values: 62.0; 61.5; 25.6; 64.0 °C respectively. The fractions of H2O in the vapor and liquid phases of natural gas combustion products are determined as a function of temperature by condition that the 100 % content of H2O in from of vapor state (without water) corresponds to the saturation temperature (or dew point).This temperature has value of about 60°C for combustion products under stoichiometric air/gas ratio. Bibl. 31, Fig. 10, Tab. 3.

Application of Continuous Thermodynamics to Natural-Gas Mixtures

1990 ◽  
Vol 45 (5) ◽  
pp. 633-643 ◽  
Author(s):  
J. M. Prausnitz ◽  
R. L. Cotterman
Keyword(s):  
Natural Gas ◽  
Gas Mixtures

scholarly journals Discussion on Water Dew Point and Hydrocarbon Dew Point of Natural Gas

2021 ◽  
Vol 651 (3) ◽  
pp. 032090
Author(s):  
Xiaomei Zou ◽  
Fengxia Huang ◽  
Liming Zhang ◽  
Tumeng Gele
Keyword(s):  
Natural Gas ◽  
Dew Point

Composition of Mixtures of Natural Gas Components Determined by Raman Spectrometry

1980 ◽  
Vol 34 (4) ◽  
pp. 411-414 ◽  
Author(s):  
Dwain E. Diller ◽  
Ren Fang Chang
Keyword(s):  
Natural Gas ◽  
Mole Fraction ◽  
Gas Mixtures ◽  
Spectrometric Method ◽  
Gas Mixture ◽  
Raman Intensity ◽  
Raman Spectrometry ◽  
Intensity Measurements ◽  
Hydrocarbon Gas ◽  
Related Line

The feasibility of using Raman spectrometry for determining the composition of mixtures of natural gas components was examined. Raman intensity measurements were carried out on eight, gravimetrically prepared, binary gas mixtures containing methane, nitrogen, and isobutane at ambient temperature and at pressures to 0.8 MPa. The repeatability of the molar intensity ratio, ( I2/ y2)/( I1/ y1), where y1 is the concentration of component 1 in the mixture, and I1 is the intensity of the related line in the mixture spectrum, was examined. The compositions of two gravimetrically prepared methane-nitrogen-isobutane gas mixtures were determined spectrometrically with an estimated precision of about 0.001 in the mole fraction. Typical differences from the gravimetric concentrations were less than 0.002 in the mole fraction. The Raman spectrum of a gravimetrically prepared, eight component, hydrocarbon gas mixture was obtained to show that the Raman spectrometric method has potential for being applicable to natural gas type mixtures.

Dew-Point Curves of Natural Gas. Measurement and Modeling

2006 ◽  
Vol 45 (14) ◽  
pp. 5179-5184 ◽  
Author(s):  
S. Avila ◽  
A. Benito ◽  
C. Berro ◽  
S. T. Blanco ◽  
S. Otín ◽  
...  
Keyword(s):  
Natural Gas ◽  
Dew Point ◽  
Gas Measurement
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