A liquid hydrocarbon filterability system includes a liquid hydrocarbon sample source piping in fluid communication with a liquid hydrocarbon sample container. A filtration media element is in fluid communication with the liquid hydrocarbon sample source piping. Filtered liquid hydrocarbon outlet piping is in fluid communication with and downstream of the filtration media element. A flow or volume measurement element is in fluid communication with the filtered liquid hydrocarbon outlet piping and is configured to measure an amount of liquid hydrocarbon passing through the filtration media element. A constant pressure source is configured to provide liquid hydrocarbon to the filtration media element at a constant pressure.

An activated carbon filter for reducing hydrocarbon emissions, includes a plurality of channels, the channels being suitable for the flow of gases therethrough and at least part of the surface of the channel walls having activated carbon for absorbing and/or adsorbing substances, in particular hydrocarbons; and a filter peripheral wall on the outer periphery of the activated carbon filter; wherein the filter peripheral wall comprises a barrier layer, in particular in the form of a coating on the outer surface of the filter peripheral wall, preventing or at least significantly reducing the penetration, in particular the diffusion, of gases and/or substances, in particular hydrocarbon-containing gases, through the filter peripheral wall.

An evaporated fuel processing device is installed to a vehicle having an internal combustion engine and a fuel tank and is configured to process evaporated fuel generated through evaporation of fuel in the fuel tank. A control device of the evaporated fuel processing device is configured to adjust an opening degree of a sealing valve based on a pressure of vapor-phase gas sensed with a pressure sensor and a concentration of evaporated fuel in the vapor-phase gas sensed with a concentration sensor and thereby adjust a supply amount of the evaporated fuel supplied to an air intake pipe at a time of executing a purge operation, in which the vapor-phase gas is purged from the fuel tank to the air intake pipe of the internal combustion engine.

A fuel tank system for a vehicle includes a fuel tank, a fuel supply passage, a canister, an evaporated fuel gas supply passage, a communication passage, a backflow prevention device, first and second pressure measurement devices, and a control device. The fuel tank stores fuel supplied by the fuel supply passage. The canister adsorbs evaporated fuel gas generated in the fuel tank and supplied through the evaporated fuel gas supply passage. The backflow prevention device is provided in a pipe line of the fuel supply passage, and prevents a backflow of the fuel from the fuel tank. The first and second pressure measurement devices respectively measure pressures in the fuel supply passage and the evaporated fuel gas supply passage. The control device diagnoses the communication passage as being blocked when a difference between pressure values measured by the first and second pressure measurement devices exceeds a predetermined value.

Provided is a method for treating an oil gas, which can realize high-efficiency separation for and recovery of gasoline components, C.sub.2, C.sub.3, and C.sub.4 components. The method first conducts separation of light hydrocarbon components from gasoline components, and then performs subsequent treatment on a stream rich in the light hydrocarbon components, during which it is no longer necessary to use gasoline to circularly absorb liquefied gas components, which significantly reduces the amount of gasoline to be circulated and reduces energy consumption throughout the separation process. Besides, in this method, impurities, such as H.sub.2S and mercaptans, in the stream rich in the light hydrocarbon components are removed first before the separation for the components. This ensures that impurities will not be carried to a downstream light hydrocarbon recovery section, thus avoiding corrosion issues caused by hydrogen sulfide in the light hydrocarbon recovery section.

Provided is a cyclonic fluid separator, method of fluid separation, and a method of installing a cyclonic fluid separator. The cyclonic fluid separator includes a throat portion arranged between a converging fluid inlet section and a diverging fluid outlet section including an inner primary outlet for condensables depleted fluid components and an outer secondary outlet for condensables enriched fluid components. A central body extends along a central axis of the cyclonic fluid separator through at least part of the inlet section of the separator. The central body has, at a location upstream of the throat portion, a larger outer width than a smallest inner width of the throat portion; swirl imparting means arranged in the inlet section for creating a swirling motion of the fluid within at least part of the separator. The swirl imparting means are adjustable; and an adjusting mechanism configured for adjusting the swirl imparting means for varying the swirling motion of the fluid.

A sparging evaporator for an inerting system including an outer vessel, an inner vessel within the outer vessel, and a plenum formed between the inner and outer vessels. The outer vessel includes a gas inlet for receiving inlet gas into the plenum, and a liquid inlet for receiving liquid fuel into the plenum. The inlet gas in the plenum generates a gas pressure that is exerted against a free surface of the liquid fuel in the plenum thereby forcing the liquid fuel and the inlet gas through an inlet of the inner vessel. The inner vessel contains a structure that promotes liberation of fuel vapor from the liquid fuel and enables the inlet gas in the liquid fuel to sparge the fuel vapor in the liquid fuel, thereby forming a fuel-enriched gas mixture that can be fed to a reactor of the inerting system.

Disclosed are methods of manufacturing a zeolite membrane, comprising: providing at least one porous substrate; and coating the at least one porous substrate with a membrane. In some embodiments, the method further comprises hydrothermally treating the membrane with a first hydrothermal treatment step with tetrapropylammonium fluoride (TPAF) and a second hydrothermal treatment step with tetraethammonium hydroxide (TEAOH). In some embodiments, coating the substrate with a membrane comprises surrounding at least a portion of the at least one porous substrate with a precursor gel, the gel comprising a gel phase and a plurality of CHA or MFI crystals; heating the at least one porous substrate and the precursor gel; washing the at least one porous substrate; drying the at least one porous substrate; and calcining the at least one porous substrate.

A tank system (1) for a motor vehicle having an internal combustion engine to which fuel is supplied from a tank (2), wherein the tank (2) is assigned, in a ventilation path to the atmosphere (7), a flushable filter device (6, 6) for being loaded with hydrocarbon vapors of the fuel. The filter device (6, 6) has multiple mutually separate activated carbon filters (6). All of the activated carbon filters (6) are connected permanently in parallel. In this way, the ventilation resistance from the tank in the direction of the atmosphere can be kept low.

An air pollution remediation system is provided. The systemic apparatus includes a tubular column having a plurality of spaced apart vents along its outer surface. Each vent has adjustable louvers for controlling the airflow therethrough. An airflow conduit extends along the longitudinal length of the column with porous layers and a mass of absorbent disposed between the airflow conduit and the plurality of vents. A fan fluidly coupled to the airflow conduit urges ambient air into the airflow conduit and through the porous layers and the mass of absorbent and out of the vents in a selectively controlled manner by way of the adjustable louvers. A prefilter may be disposed upstream of the fan. A network of the systemic apparatus can be arranged to provide, in a selective enabled manner through the adjustable louvers, a contiguous looping canopy of purified air over large open spaces.