Infrared Monitoring of Semiconductor Epitaxial Process Gas Streams.

1964 ◽  
Vol 36 (6) ◽  
pp. 1112-1114 ◽  
Author(s):  
M. J. Rand
Keyword(s):  
Gas Streams ◽  
Process Gas ◽  
Infrared Monitoring

scholarly journals Behavior of Small Particles from Process Gas Streams in Diffusion Furnaces

1992 ◽  
Vol 16 (4) ◽  
pp. 236-245
Author(s):  
K. W. Lee ◽  
L. A. Curtis ◽  
J. J. Chahine ◽  
F. Yaghmaie
Keyword(s):  
Small Particles ◽  
Gas Streams ◽  
Process Gas

Comparative Study of CO2 Absorption in Aqueous Mixtures of Methyldiethanolamine (MDEA) and Methanol, Focusing on the Temperature and Concentration Influence over the Absorption Rate

2014 ◽  
Vol 353 ◽  
pp. 193-198
Author(s):  
F.J. Tamajón ◽  
Estrella Álvarez ◽  
F. Cerdeira ◽  
M.E. Vázquez
Keyword(s):  
Absorption Rate ◽  
Mixed Solvents ◽  
Secondary Amines ◽  
Aqueous Mixtures ◽  
Gas Streams ◽  
Process Gas ◽  
Methanol Solutions ◽  
Cell Reactor ◽  
Concentration Changes ◽  
Stirred Cell

The use of tertiary methyldiethanolamine (MDEA) as an absorbent for the CO2 removal from process gas streams has increased due to its advantages over primary and secondary amines. Methanol is also widely used as an organic physical solvent for the CO2 capture. Mixed solvents are expected to have a higher capacity for the acid gases than the solvent alone. The chemical absorption rate of CO2 was measured in mixtures of MDEA (weight 5%, 15% and 30%) and water-methanol solutions at different % weight relations by using a stirred-cell reactor with plane gas-liquid interface. Experiments provided data measured at a range from 283.15 K to 313.15 K operation temperatures. Results show how the solubility of CO2 varies in all systems involved focusing on temperature and concentration changes. The solubility of CO2 in the aqueous mixed MDEA with methanol as a solvent becomes significantly greater than in the aqueous amine alone.

scholarly journals A Zero-Waste Process for the Treatment of Spent Potliner (SPL) Waste

2021 ◽  
Author(s):  
Samir I. Abu-Eishah ◽  
Manal D.M. Raheem ◽  
Fatma A.S. Aljasmi ◽  
Fatima M.O. Alameri ◽  
Amna G.R. Alblooshi ◽  
...  
Keyword(s):  
Potassium Fluoride ◽  
Weak Acid ◽  
Aluminum Fluoride ◽  
Co2 Gas ◽  
Gas Streams ◽  
Agno3 Solution ◽  
Process Gas ◽  
Hazardous Gases ◽  
Environmentally Friendly Process ◽  
Silver Cyanide

This work presents a deep analyses of an environmentally friendly process to recover all valuable minerals contained in the spent potliner (SPL) such as graphite carbon and aluminum fluoride (AlF3) and production of sodium sulfate (Na2SO4) and gypsum (CaSO4) when H2SO4 is used as the leaching agent. The level of emission of hazardous gases such as HCN (weak acid) and HF are minimized by direct scrubbing of the HCN in aqueous AgNO3 solution to produce a stable silver cyanide (AgCN) product. The HF can be recovered as a liquid by condensation and used within the process and/or in production of metal fluorides such as the highly-soluble potassium fluoride (KF); a main source of fluoride in industry. Almost pure CO2 gas is also recovered from the process gas streams.

Optimized CO2 Capture Solutions for Carbon Free Hydrogen Production with Development of New Demixing Solvent Technology DMX™

2021 ◽  
Author(s):  
Clément Salais ◽  
Laurent Normand ◽  
Christian Streicher
Keyword(s):  
Global Warming ◽  
Co2 Capture ◽  
International Energy Agency ◽  
Low Pressure ◽  
Flue Gases ◽  
Co2 Removal ◽  
Steel Mill ◽  
Energy Agency ◽  
Gas Streams ◽  
Process Gas

Abstract CO2 capture & storage is foreseen as a necessity to limit global warming, as indicated by the recent reports from International Energy Agency. Major initiatives have to be initiated in a near future with concrete actions to get efficient results in limiting global warming. Based on its decades of experience in gas sweetening AXENS has developed an expertise in CO2 removal technologies. While conventional amine based processes can be used for some CO2 capture applications like for instance the treatment of process gas streams under pressure, other applications for low pressure gas streams like flue gases will require innovative advanced solutions. AXENS has studied various options for the removal of CO2 in SMR based hydrogen schemes, including the treatment of the process gas or the treatment of the flue gases from the SMR furnace, evaluating the respective merits of those options. For the treatment of the flue gases a new technology developed by IFPEN and AXENS based on a second generation amine solvent is considered : DMX™ DMX™ process, is foreseen as a key contributor for the removal of CO2 from all kind of low pressure gas streams. This process allows drastic reduction of CO2 capture cost in comparison to more conventional solvent such as MEA and others available solvents. The specific features of this solvent allows significant reduction of the heat requirements for the regeneration of the solvent. It also allows regenerating the solvent directly under pressure up to 6 bara, reducing the costs for downstream CO2 compression Preliminary techno-economic studies show significant advantage of DMX™ technology relatively to MEA : up to 30 % reduction in OPEX can be obtained for lower or similar CAPEX, depending on the condition. This process has been developed at the lab scale and is now going to be demonstrated in an industrial pilot unit installed in ArcelorMittal's steel mill plant in Dunkirk (France). This demonstration benefits from the support of EU's H2020 programme, under 3D project.

A Continuous Electrolytic Analyzer for Acidic or Basic Components of Process Gas Streams.

1963 ◽  
Vol 35 (11) ◽  
pp. 1709-1712 ◽  
Author(s):  
R. L. Burnett ◽  
R. F. Klaver
Keyword(s):  
Gas Streams ◽  
Process Gas

Influence of process gas sort and pressure on laser percussion drilling

2008 ◽  
Author(s):  
K. Walther ◽  
C. Holtkoetter ◽  
I. Kelbassa ◽  
R. Poprawe
Keyword(s):  
Process Gas ◽  
Laser Percussion Drilling ◽  
Percussion Drilling
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