The present invention relates to a dehydration composition and method of use thereof for drying gas streams, in particular natural gas streams, wherein the dehydration composition comprises (i) a glycol, (ii) a borate compound, (iii) an alkali metal carboxylate, and (iv) an additional glycol different than (i), and/or (v) an additional additive selected from an alkanolamine, a phosphate acid or salt compound, a sweetening agent, a low temperature viscosity improver, a corrosion inhibitor, an antifoaming agent, or mixtures thereof.

A vapor/smoke capturing trap system featuring a smoke chamber trap for precipitating the smoke dispersed in the chamber. The chamber includes a bottom pool for containing a reservoir of a liquid solvent, and a gas filled portion in which a lower smog portion contains fog-sized droplets of the liquid solvent and into which the smoke is introduced, and an upper clear portion in which the concentration of the smoke and the droplets is decreased, respective of their concentration in the smog portion. A fog-condenser, disposed between the smog portion and the clear portion, precipitates the fog droplets of the smog portion into the pool. A fine mist generator streams a jet of fog-sized droplets of the liquid solvent mixed with smoke toward a concentration of the smoke at the smog portion. A closed loop gas circulator withdraws gas from the clear portion and recirculates the gas under pressure through the fine mist generator into the smog portion. Fresh smoke is introduced into the gas circulator via a smoke conveying conduit. A complementary smoke capturing method includes filling the reservoir, streaming the jet of fog-sized droplets toward a concentration of smoke dispersed within the lower smog portion of the gas filled portion, precipitating droplets, in the smog portion, into the pool by a fog-condenser disposed between the lower smog portion and the upper clear portion of the gas filled portion, recirculating under pressure, in a closed loop gas circulator, gas withdrawn from the clear portion into the smog portion through the fine mist generator, and conducting fresh smoke via smoke conveying conduit into the gas circulator.

The present invention relates to a VOC reduction system and a VOC reduction method that applies pulse type thermal energy to a catalyst to activate the catalyst and oxidizes and removes the VOC.

A method for cleaning a contaminated solvent used to treat a gas stream, for example a contaminated glycol or a contaminated amine stream, by vacuum evaporation using a mechanically-maintained horizontally-orientated thin film evaporator, where the contaminant material is recovered from the thin film in solvent-free form, as either a heavy organic material or as free flowing salts.

A method of treating oil and gas streams to remove total organic sulfur or total acid gas including the step of treating the gas stream with a solution of an amine, physical solvent, and water wherein the amine solution may optionally also contain an activator.

Method for extracting a gas from a gas mixture by: during a purification step, bringing a first sorption medium into contact with the gas mixture in order to extract the gas from the gas mixture, whereby an enriched first sorption medium is formed in which the gas is at least partially sorbed; during a regeneration step, bringing a second sorption medium into contact with the enriched first sorption medium in order to extract the gas from the enriched liquid first sorption medium; whereby for the contact in the purification step and/or in the regeneration step use is made of a separate venturi ejector.

This invention is directed to methods and systems for controlling water in acid gas removal processes comprising the steps of a) treating the gas stream in an absorption zone with the NAS absorption liquid; b) direction the acid gas-loaded NAS absorption liquid to a regeneration zone; c) directing the regenerated NAS absorption liquid to step a); and d) controlling the first and second set of conditions.

A method for cleaning a contaminated solvent used to treat a gas stream, for example a contaminated glycol or a contaminated amine stream, by vacuum evaporation using a mechanically-maintained horizontally-orientated thin film evaporator, where the contaminant material is recovered from the thin film in solvent-free form, as either a heavy organic material or as free flowing salts.

A desulfurization and denitration agent which is a mixture of polyalcohol and/or polyglycol substances, polycarboxylic acid substances and alkaline substances heated to above 90 C. and yielding, after condensation and/or polymerization, macromolecular or high-polymer ethers and/or esters for use in removing sulfur dioxides and/or nitrogen oxides from gases.

The present invention relates to a carbon dioxide absorbent comprising a triamine, a diamine and a dialkylene glycol dialkyl ether or trialkylene glycol dialkyl ether. The carbon dioxide absorbent according to the present invention can improve the carbon dioxide absorption capacity, absorption rate, and regeneration performance thereof simultaneously by using the triamine as a main absorbent, the diamine as a rate enhancer, the dialkylene glycol dialkyl ether or trialkylene glycol dialkyl ether as a fine disproportionation agent and a regeneration promoter.