A method to purify a hydrocarbon gas with hydrogen sulfide as an impurity comprises: (a) charging a chamber with a bed of active-metal carbide of a predetermined mesh-size range; (b) conducting the hydrocarbon gas through the bed of active-metal carbide, forming additional hydrocarbon gas by reaction of the active-metal carbide and the hydrogen sulfide; and (c) filtering from the chamber the hydrocarbon gas without the hydrogen sulfide.

Proposed is a pretreatment desulfurization system including a desulfurization agent storage tank for storing a liquid-phase pretreatment desulfurization agent and a metering pump for supplying the liquid-phase pretreatment desulfurization agent from the desulfurization agent storage tank to a fuel supply line through which marine fuel oil is supplied to a marine engine in a predetermined ratio. Since a fluid mixture composed of the marine fuel oil and the pretreatment desulfurization agent is supplied to the marine engine, sulfur oxides are adsorbed and removed during combustion of the fluid mixture.

A real time additive processing system for crude oil or refined fuel products is coupled to a fuel transport line that transfers fuel from one storage tank to another storage tank. The fuel additive processing system includes a fuel additive storage tank coupled to a liquid conduit having a liquid pump with a speed/stroke controller that regulates the liquid pump. The liquid conduit is coupled to the fuel transport line at a fuel additive injection nozzle. The fuel additive processing system also includes a flow rate transmitter and a chemical or physical property analyzer coupled to the fuel transport line downstream of the additive injection nozzle. The fuel additive processing system includes a flow controller that communicates with the liquid pump speed/stroke controller, flow rate transmitter and chemical or physical property analyzer. A remote system allows selective control of the flow controller.

Implementations described and claimed herein provide systems and methods for processing liquefied natural gas (LNG). In one implementation, a solvent is injected into a feed of natural gas at a solvent injection point. A mixed feed is produced from a dispersal of the solvent into the feed of natural gas. The mixed feed contains heavy components. A chilled feed is produced by chilling the mixed feed. The chilled feed includes a vapor and a condensed liquid. The condensed liquid contains a fouling portion of the heavy components condensed by the solvent during chilling. The liquid containing the fouling portion of the heavy components is separated from the vapor. The vapor is directed into a feed chiller heat exchanger following separation of the liquid containing the fouling portion of the heavy components from the vapor, such that the vapor being directed into feed chiller heat exchanger is free of freezing components.

A biofuel product having constituents selected from the group including fat, oil and/or grease components. A container is formed of a biodegradable material having a multiplicity of openings of a size and shape adapted for allowing the fat, oil and/or grease components to pass through the openings to an interior area of the container. An absorbent capture material is positioned in the container and holds a quantity of the fat, oil and/or grease. The container, capture material and fat, oil and/or grease collectively include the biofuel product.

A process for removal of mercury in a gas dehydration system comprising (a) adding a complexing agent to a recirculated glycol solvent as part of the glycol solution feed prior to or at the dehydration liquid contactor and recirculating continuously with the glycol solvent, (b) selectively reacting the complexing agent with mercury in the wet natural gas to remove the mercury from the dry natural gas product, (c) and feeding the rich glycol with the complexing agent to a regenerator and continuously regenerating.

A synthetic fuel is provided. The synthetic fuel includes a base fuel having a first energy density and a compound, the compound including a water absorbing agent for absorbing water from the base fuel to prevent poor combustion and an explosive agent having a detonative energy value that is sufficient so as to provide the compound with a second energy density equal to or greater than the first energy density.

A composition for scavenging hydrogen sulphide and/or mercaptans in hydrocarbon streams includes a H2S scavenger selected from oxazolidine compounds, triazine and metal-based carboxylate compounds, and a synergistic additive allowing boosting the effect of the H2S scavenger compound.

The present disclosure provides methods, compositions and systems for drying coal fines.

A biofuel product having constituents selected from the group including fat, oil and/or grease components. A container is formed of a biodegradable material having a multiplicity of openings of a size and shape adapted for allowing the fat, oil and/or grease components to pass through the openings to an interior area of the container. An absorbent capture material is positioned in the container and holds a quantity of the fat, oil and/or grease. The container, capture material and fat, oil and/or grease collectively comprise the biofuel product.