An improved surface evaporation system where droplet size and spray configuration is controlled and modified based upon ambient conditions in order to prevent the spreading of salts and other contaminants outside of a treatment pit or specific area. Water droplet size can be controlled by adjustment of the spray nozzle side. Increasing the nozzle size to increase droplet size results in a reduction of mist travel direction (i.e., drift distance). Reducing the nozzle size decreases the droplet size, and increases drift distance. Similarly, changing the configuration of the spray will affect drift distance. For example, changing the spray direction and height from a vertical spray direction to a flatter, more horizontal direction (with resulting greater area) results in a substantially decreased drift distance. In addition, the system also takes into account the effects of wind speed and direction and humidity. Evaporation modules may use standard spray nozzles, or ultrasonic evaporators.

The present application discloses an evaporator and a liquid blocking device thereof. The liquid blocking device includes: a body, which has a plate-shaped first separator extending in a longitudinal direction, the first separator having a plurality of holes, and the plurality of holes communicating an exterior of the body with an interior of the body; and a second separator attached to the body, the second separator being configured to have a plurality of openings which abut each other, so that a pressure drop generated when a fluid passes through the second separator via the openings is less than a pressure drop generated when the fluid passes through the first separator. The present application can improve the effect of gas-liquid separation.

The invention relates to a process for the preparation of a multimodal polyolefin polymer in a first polymerization reactor and a second polymerization reactor connected in series, wherein a first polyolefin polymer is prepared in the first polymerization reactor in suspension in the presence of hydrogen and a second polyolefin polymer is prepared in the second polymerization reactor in the presence of a lower concentration of hydrogen than in the first polymerization reactor, the process comprising: a) withdrawing a suspension of solid polyolefin particles in a suspension medium from the first polymerization reactor, wherein the suspension medium comprises hydrogen and a hydrocarbon mixture having an initial boiling point of at least 50° C. and a final boiling point of at most 120° C.; b) feeding the suspension to a flash drum having a pressure controlled by a vacuum pump, wherein the pressure of the flash drum is less than 0.1 MPa; c) vaporizing a part of the suspension medium in the flash drum to obtain a hydrogen-depleted suspension and d) withdrawing the hydrogen-depleted suspension from the flash drum and feeding it to the second polymerization reactor.

This disclosure concerns a system for purifying contaminated water and a method for using the system. More specifically, the invention concerns removing contaminants, such as those introduced by fracking, from a contaminated water.

Method and plant for fluid purification by distillation comprising a reservoir (1) with a fluid containing diluted solids provided with an impurities filter on its outlet (2); a pump (3) connected to the reservoir outlet (1) and set up to increase the fluid containing solids pressure and temperature; and a heat area (4) for the fluid containing solids comprising a plurality of ducts contacting with a heat transfer fluid; and, furthermore, comprising a convergent-divergent nozzle (5) connected to the heat area outlet (4) and set to increase the biphasic liquid-vapor fluid speed so the diluted solids contained in the fluid already heated settle in a solids reservoir (6), whereas the fluid passes to a condenser (7) and then to a purified fluid reservoir (8) already in liquid state.

Method and plant for fluid purification by distillation comprising a reservoir (1) with a fluid containing diluted solids provided with an impurities filter on its outlet (2); a pump (3) connected to the reservoir outlet (1) and set up to increase the fluid containing solids pressure and temperature; and a heat area (4) for the fluid containing solids comprising a plurality of ducts contacting with a heat transfer fluid; and, furthermore, comprising a convergent-divergent nozzle (5) connected to the heat area outlet (4) and set to increase the biphasic liquid-vapor fluid speed so the diluted solids contained in the fluid already heated settle in a solids reservoir (6), whereas the fluid passes to a condenser (7) and then to a purified fluid reservoir (8) already in liquid state.

A system for the disposal of liquid waste includes a portable container body having an open interior and a liquid waste inlet for receiving liquid waste containing solids. A liquid waste holding tank is provided within the open interior of the portable container body for receiving the liquid waste from the liquid waste inlet. A liquid-solid separator within the open interior of the portable container body produces a solid waste and a separated liquid waste. A conduit directs the liquid waste from the liquid waste holding tank to the liquid-solid separator. An evaporator within the open interior of the portable container body heats the separated liquid waste to evaporate and remove water from the separated liquid waste as water vapor and produces a concentrated liquid waste. A safety containment system prevents the liquid waste from escaping to the environment. A method for disposing of liquid waste is also disclosed.

A system for the disposal of liquid waste includes a portable container body having an open interior and a liquid waste inlet for receiving liquid waste containing solids. A liquid waste holding tank is provided within the open interior of the portable container body for receiving the liquid waste from the liquid waste inlet. A liquid-solid separator within the open interior of the portable container body produces a solid waste and a separated liquid waste. A conduit directs the liquid waste from the liquid waste holding tank to the liquid-solid separator. An evaporator within the open interior of the portable container body heats the separated liquid waste to evaporate and remove water from the separated liquid waste as water vapor and produces a concentrated liquid waste. A safety containment system prevents the liquid waste from escaping to the environment. A method for disposing of liquid waste is also disclosed.

A liquid separator and concentrator is disclosed. An example liquid separator and concentrator includes a separator column. A spray chamber has a sprayer nozzle to spray an influent within the spray chamber and create a falling film in the separator column. A heating jacket surrounds the separator column, wherein the heating jacket heats the falling film to evaporate at least one portion of the falling film and leaves a concentrate. A concentrate collection vessel receives the concentrate from the separator column.

A liquid separator and concentrator is disclosed. An example liquid separator and concentrator includes a separator column. A spray chamber has a sprayer nozzle to spray an influent within the spray chamber and create a falling film in the separator column. A heating jacket surrounds the separator column, wherein the heating jacket heats the falling film to evaporate at least one portion of the falling film and leaves a concentrate. A concentrate collection vessel receives the concentrate from the separator column.