A system and method of cleaning a desanding vessel is provided including determining that sand has settled in the accumulation zone of the vessel, isolating and depressurizing the vessel and introducing a flush or wash fluid into the vessel. The wash fluid is introduced via a flush inlet at or near the process gas outlet of the vessel, and at a purge rate to fluidize sand in the accumulation zone and form a slurry. The slurry is collected from the vessel at a flush outlet downstream from the flush inlet. The purge rate is maintained for elutriation of the fluidized sand in the slurry, through the vessel and out of the flush outlet.

A droplet generator includes a chamber including an enclosed space filled with gas having vapor, a tube extending through the chamber, a gas flow channel inside the tube, and a heater in the chamber. The tube includes a sidewall having an outer surface exposed to the enclosed space of the chamber, and an inner surface. The tube contains liquid. The heater is operable to change a phase of the liquid contained in the tube to vapor such that the vapor is provided into the enclosed space. A pressure in the enclosed space is higher than a pressure in the gas flow channel such that the vapor in the enclosed space flows to the gas flow channel by passing through the tube.

A filter including a filter wall extending between first and second opposed ends, the filter wall being tubular and surrounding a filter cavity, the filter wall including filtration material permeable to air so that the filter cavity is in fluid communication with an environment of the filter through the filter wall, a filter inlet defined in the first end and in fluid communication with the filter cavity, and a tray extending within the filter cavity and freely rotatable within the filter cavity about an axis of rotation extending longitudinally within the filter cavity, the tray having a center of gravity offset from the axis of rotation, the tray being radially inwardly spaced from the filter wall, the tray being radially outwardly spaced from the filter inlet. A filter module including such a filter and a method of protecting a horizontally extending tubular filter wall from debris are also discussed.

A filter including a filter wall extending between first and second opposed ends, the filter wall being tubular and surrounding a filter cavity, the filter wall including filtration material permeable to air so that the filter cavity is in fluid communication with an environment of the filter through the filter wall, a filter inlet defined in the first end and in fluid communication with the filter cavity, and a tray extending within the filter cavity and freely rotatable within the filter cavity about an axis of rotation extending longitudinally within the filter cavity, the tray having a center of gravity offset from the axis of rotation, the tray being radially inwardly spaced from the filter wall, the tray being radially outwardly spaced from the filter inlet. A filter module including such a filter and a method of protecting a horizontally extending tubular filter wall from debris are also discussed.

A multi-mechanism wet dust removal apparatus achieving water circulation use and a dust removal method. The multi-mechanism wet dust removal apparatus includes a dust collecting device, a dust settling and air-water separation device, a water circulating device and a dust discharging device, and dust removal is achieved by dust collecting, dust settling, air-water separation and dust discharging. The multi-mechanism wet dust removal apparatus achieving water circulation use and the dust removal method integrate multiple dust removal mechanisms, and the dust removal efficiency and effect are obvious.

A multi-mechanism wet dust removal apparatus achieving water circulation use and a dust removal method. The multi-mechanism wet dust removal apparatus includes a dust collecting device, a dust settling and air-water separation device, a water circulating device and a dust discharging device, and dust removal is achieved by dust collecting, dust settling, air-water separation and dust discharging. The multi-mechanism wet dust removal apparatus achieving water circulation use and the dust removal method integrate multiple dust removal mechanisms, and the dust removal efficiency and effect are obvious.

The system to be installed on a vehicle to purify air using kinetic energy generated by movement of the vehicle is presented. The system comprises at least one kinetic air purifier structure which is an air conduit having a first particle collection chamber and a second particle separation chamber. Each chamber comprises at least one convex element that provides obstacle to the air flow to separate large particles from the air flow, at least one trapping element, such as cotton fabric, to trap smaller dirt particles, and at least one chamber orifice that allows access to the chambers for cleaning purpose. The system further comprises a micro-porous trapping element to trap micro particles. Due to separated and trapped particles at various chambers, the air is purified. The air purification is achieved by capturing the dirt particles instead of diminishing those.

The system to be installed on a vehicle to purify air using kinetic energy generated by movement of the vehicle is presented. The system comprises at least one kinetic air purifier structure which is an air conduit having a first particle collection chamber and a second particle separation chamber. Each chamber comprises at least one convex element that provides obstacle to the air flow to separate large particles from the air flow, at least one trapping element, such as cotton fabric, to trap smaller dirt particles, and at least one chamber orifice that allows access to the chambers for cleaning purpose. The system further comprises a micro-porous trapping element to trap micro particles. Due to separated and trapped particles at various chambers, the air is purified. The air purification is achieved by capturing the dirt particles instead of diminishing those.

An apparatus for separating solid particles from a stream of a mixture of gaseous fluids and solid particles has a separation vessel. A mixture conduit extends vertically into a central section of the separation vessel and defines a discharge opening located within the vessel and tangentially oriented for discharging the stream into an open interior of the vessel and imparting a tangential velocity to the stream. A gas recovery conduit within the separation vessel has an inlet for withdrawing gaseous fluids from within the open interior of the separation vessel at a location below the discharge opening and radially offset from the mixture conduit. An intermediate portion of the gas recovery conduit is located above the inlet within the separation vessel and has a diameter greater than a diameter of the inlet.

An apparatus for separating solid particles from a stream of a mixture of gaseous fluids and solid particles has a separation vessel. A mixture conduit extends vertically into a central section of the separation vessel and defines a discharge opening located within the vessel and tangentially oriented for discharging the stream into an open interior of the vessel and imparting a tangential velocity to the stream. A gas recovery conduit within the separation vessel has an inlet for withdrawing gaseous fluids from within the open interior of the separation vessel at a location below the discharge opening and radially offset from the mixture conduit. An intermediate portion of the gas recovery conduit is located above the inlet within the separation vessel and has a diameter greater than a diameter of the inlet.