Abstract: Methods and systems for circulating hot air in a solar desalination system include a desalination structure having an air flow path defined between an external surface layer and an internal surface layer. A return flow conduit has a fan, a check valve, and a control valve. Saline water is delivered through a nozzle to provide a mist. An air flow within the air flow path is heated to form a hot air supply. The mist is heated with the hot air supply to form an evaporated fluid. The fan is operated to divert a diverted portion of the hot air supply into the return flow conduit to be mixed with an ambient air to form and heat the air flow. The volume of the diverted portion can be controlled with the control valve. The check valve prevents ambient air from entering the return flow conduit at a base end.

Abstract: The present system is for simultaneous recovery of purified water and dissolved solids from impure high TDS water (1) which is achieved in a single step and eliminates the use of external thermal energy for making the system significantly efficient. It eliminates the use of boiler, cooling tower that reduces the overall capital cost and continuous requirement of external thermal energy for making system efficient. The simultaneous recovery of the purified water and solids from high TDS input effluent reduce the energy intensity of the system. Said system provides a vacuum system as heat pump which enables the system to be self-sufficient in thermal energy requirements for evaporation process and reduces GHG emissions significantly.

Abstract: A system and method for decontaminating a fluid and recovered vapor, particularly processing and recycling water used in an oil zone steam process, utilizing a vaporizer-desalination unit to separate a contaminated water flow into a contaminated disposal flow and a clean water vapor flow. The contaminated water flow is recovered after separation from a combined oil and water flow from an oil well. The clean water vapor flow is preferably passed through a steam generator to produce the steam used in the oil zone steam process. The steam is injected into the oil zone of a designated well and then extracted as the combined oil and water flow. Once primed with sufficient external water, the system and method is designed to operate continuously with minimal replenishment because of the water/vapor/steam cycle.

Abstract: A system and method for making electret media is presently provided. The method involves placing a piezoelectric material adjacent a media and applying a mechanical stress to the piezoelectric material and thereby transferring an electric charge from the piezoelectric material to the media and making the electret media. The system is configured to place the piezoelectric material adjacent the media and to apply mechanical stress to the piezoelectric material.

Abstract: A heat power management system is disclosed for an alternating current (AC) power controller for use with portable reverse osmosis water purification systems requiring precise control of a heating action for an internal water heater coupled with energy savings and the reduction of AC line disturbances. The heat power management system is designed to operate with various international electrical systems while protecting such system from excessive current draws.

Abstract: A gas trap system for metal organic chemical vapor deposition (MOCVD) exhaust abatement operations is provided. The gas trap system may include a housing including an inlet configured to receive exhaust gas and an outlet. The gas trap system may also include a conical inlet shield positioned within the housing. The conical inlet shield may form a first path between the housing and the conical inlet shield, wherein the first path receives the exhaust gas from the inlet. The conical inlet shield may also cool the exhaust gas and cause the exhaust gas to be uniformly distributed in the first path. The gas trap system may also include a filter configured to receive the exhaust gas from the first path and to filter the exhaust gas, wherein the filtered gas exhaust is provided to the outlet.

Abstract: The invention provides a process for refining bio-based propylene glycol, wherein impurities having boiling points close to that of propylene glycol are separated. In this process, C5-C20 oleophilic alcohol compounds, C5-C20 alkanes and/or C4-C20 oleophilic ketone compounds are subjected to azeotropism as an azeotropic solvent together with the bio-based propylene glycol to obtain an azeotrope containing propylene glycol. Then the azeotropic solvent in the azeotrope is separated to obtain a crude propylene glycol which is further purified to obtain propylene glycol.

Abstract: An air treatment device includes a casing with an air inlet and an air outlet. Air flows through the casing and an air treatment section in the casing. The air treatment section includes a fan for generating a flow of air from the air inlet to the air outlet, a filtering means arranged within the flow of air, a first pressure sensor to measure a first pressure in the flow of air, a second pressure sensor to measure a second pressure in a room or cabin surrounding the air treatment device, and a control unit. The control unit is configured to adapt a speed of the fan based on the measured first pressure and the measured second pressure to control a flow of air through the air treatment device.

Abstract: A dividing wall column is used in an alkylation process flow scheme to fractionate an alkylate reactor effluent to produce an iso-butane-rich stream as a recycle feed for the alkylation reactor while also separating iso-butane, normal butane and alkylate as separate product streams depending on the reactor effluent composition. In an optional embodiment, the scheme may contain propane.

Abstract: Many linear alpha olefin (LAO) syntheses form a range of LAO products when oligomerizing ethylene in the presence of a Ziegler-type catalyst. The range of products typically requires a plurality of distillation columns to separate the LAO products up to a desired carbon count, but such approaches may be energy- and capital-intensive. LAO product separation using at least one dividing wall column may lessen these burdens. Methods for separating LAOs may comprise: providing a pre-processed product stream comprising Cg+ linear alpha olefins (LAOs) to a first of a series of distillation columns, at least one member of the series of distillation columns comprising a dividing wall column; and separating an overhead stream comprising a first LAO from the dividing wall column and one or more side streams from the dividing wall column, each side stream comprising a different LAO that also differs from the first LAO.

Abstract: The present description provides high working capacity adsorbents with low DBL bleed emission performance properties that allows the design of evaporative fuel emission control systems that are lower cost, simpler and more compact than those possible by prior art. Emission control canister systems comprising the adsorbent material demonstrate a relatively high gasoline working capacity, and low emissions.

Abstract: ABSTRACT An apparatus is for collecting a by-product in a semiconductor manufacturing process. The apparatus includes: a housing cooling channel on an inner wall thereof to cool exhaust gas which is temperature-controlled by a heater while being introduced through a gas inlet of an upper plate; an internal collecting tower including multiple vertical plates and multiple horizontal plates that are assembled, and condensing and collecting a by-product from the exhaust gas; a main cooling channel having a serpentine shape and cooling the exhaust gas uniformly by using coolant while passing through the internal collecting tower; and a multi-connection pipe sequentially supplying the coolant to the upper plate cooling channel, the housing cooling channel, and the main cooling channel and discharging the coolant, by using a supply pipe and a discharge pipe that are provided outside the housing.

Abstract: A low-profile, large diameter, oval shaped, modular, inside out flow in-tank filter assembly includes at least one filter element having spaced first and second identical endcaps each with a central opening there through and filter media extending between the endcaps. The filter assembly includes a tank bushing coupled to the central opening of one endcap of at least one filter element on one end of the assembly, wherein the tank bushing is configured to mount the inside out flow in-tank filter assembly to a return line within a reservoir. The filter assembly includes a bypass valve coupled to the central opening of one endcap of at least one filter element on one end of the assembly, wherein the bypass valve is configured to allow flow to selectively bypass the filter media of each filter element. Further, each endcap includes a universal alignment and coupling structure around the central opening.

Abstract: A method for circulating hot air in a solar desalination system includes providing a desalination structure having an air flow path defined between an external surface layer and an internal surface layer. A return flow conduit provides an internal fluid flow path. Saline water is pumped through a center column in a direction from the base towards the peak. The saline water is delivered through a nozzle that extends through a sidewall of the center column to provide a mist within the desalination structure exterior of the center column. An air flow within the air flow path is heated to form a hot air supply. The mist is heated with the hot air supply to form an evaporated fluid. A diverted portion of the hot air supply is delivered into the return flow conduit and mixed with an ambient air to form and heat the air flow.

Abstract: A method may include providing a humidification-dehumidification unit proximate one or more abandoned wells, circulating a water feed through the one or more abandoned wells, using geothermal heat in the one or more abandoned wells to heat the water feed, directing the heated water feed to the humidification-dehumidification unit, and treating the heated water feed in the humidification-dehumidification unit to provide purified water.

Abstract: The present disclosure discloses a multi-bubbling region column tray and a corresponding plate column. The multi-bubbling region column tray includes: at least two bubbling regions, provided with first openings for liquid and gas to be mixed and in contact with each other; and at least one non-side downcomer, including at least one hanging downcomer, where the hanging downcomer has a bottom part which includes one or more second openings allowing the liquid to flow toward a lower left side, and one or more third openings allowing the liquid to flow toward a lower right side; and the bottom part of the hanging downcomer is designed to separate the liquid flowing out from the one or more second openings and the liquid flowing out from the one or more third openings.

Abstract: A method of separating an organic solvent which may easily separate and recover an organic solvent from a mixed solution containing the organic solvent, and an organic solvent separation system capable of performing the same are disclosed herein. In some embodiments, the method includes introducing a first mixed solution into a first distillation column to recover an organic solvent and discharge a first fraction containing an unrecovered organic solvent and a high boiling point compound A to a bottom of the column, introducing a second mixed solution into a second distillation column to recover organic solvent and discharge a second fraction containing an unrecovered organic solvent and a high boiling point compound B, and introducing the first fraction and the second fraction into a third distillation column to recover an organic solvent-rich fraction and a high boiling point compound-rich fraction.

Abstract: A method and systems are provided for controlling degradation in a reboiler using a hydrophobic coating. A reboiler is provided that includes a steam shell and a plurality of tubes. The reboiler includes a low surface-energy coating on a surface of the plurality of tubes.

Abstract: A process for processing an alcohol-containing solvent is described. The process according to the invention is used in particular for the treatment of alcohol-containing solvents which are used, for example, for cleaning metal parts. Further subject matter of the present invention are compositions which are suitable for the aforementioned intended use, as well as the use of certain compositions for the purification of alcohol-containing solvents.

Abstract: A plastic recycling system and method thereof is provided, wherein one or more plastic products are contained in a reaction unit and heated by an electric heating unit which converts electrical energy into thermal energy. The one or more plastic products in the reaction unit are decomposed to produce one or more decomposed product in gas phase through a decomposition reaction, such as pyrolysis reaction, to form one or more gaseous fuel products which are condensed into one or more liquid phase fuel products by a condensation unit.