The invention describes a portable apparatus to treat surfaces and the air with hydroxyl ions to reduce the viability and/or kill pathogens.

There is provided a system for circulating air. The system for circulating air has a concrete element that has an open cell porous matrix concrete. The concrete element has an inner surface opposite an outer surface. The inner surface faces an enclosed dwelling space of a building. The system for circulating air has an air circulation conduit in fluid flow communication with the outer surface of the concrete element, and a fan configured to circulate air along the air circulation conduit and through the open cell porous matrix, across a thickness of the concrete element, into the enclosed dwelling space.

There is provided a system for circulating air. The system for circulating air has a concrete element that has an open cell porous matrix concrete. The concrete element has an inner surface opposite an outer surface. The inner surface faces an enclosed dwelling space of a building. The system for circulating air has an air circulation conduit in fluid flow communication with the outer surface of the concrete element, and a fan configured to circulate air along the air circulation conduit and through the open cell porous matrix, across a thickness of the concrete element, into the enclosed dwelling space.

The present disclosure relates to a regenerative thermal oxidizer comprising at least a first transfer chamber and at least a second transfer chamber, wherein the first transfer chamber comprises a first bed and the second transfer chamber comprises a second bed; at least one reaction chamber in fluid flow communication with the first transfer chamber and with the second transfer chamber, wherein waste gas is introducible into the regenerative thermal oxidizer to flow through the first bed to the reaction chamber or to flow through the second bed to the reaction chamber; and one or more first oxygen-containing gas inlet for introducing oxygen-containing gas into the regenerative thermal oxidizer positioned between at least a portion of the first bed and at least a portion of the reaction chamber or positioned between at least a portion of the second bed and at least a portion of the reaction chamber.

FIG. 1

The present disclosure relates to a regenerative thermal oxidizer comprising at least a first transfer chamber and at least a second transfer chamber, wherein the first transfer chamber comprises a first bed and the second transfer chamber comprises a second bed; at least one reaction chamber in fluid flow communication with the first transfer chamber and with the second transfer chamber, wherein waste gas is introducible into the regenerative thermal oxidizer to flow through the first bed to the reaction chamber or to flow through the second bed to the reaction chamber; and one or more first oxygen-containing gas inlet for introducing oxygen-containing gas into the regenerative thermal oxidizer positioned between at least a portion of the first bed and at least a portion of the reaction chamber or positioned between at least a portion of the second bed and at least a portion of the reaction chamber.

FIG. 1

The present disclosure relates to a regenerative thermal oxidizer comprising at least a first transfer chamber and at least a second transfer chamber, wherein the first transfer chamber comprises a first bed and the second transfer chamber comprises a second bed; at least one reaction chamber in fluid flow communication with the first transfer chamber and with the second transfer chamber; and one or more first waste gas inlet for introducing at least a first portion of waste gas into the regenerative thermal oxidizer positioned between at least a portion of the first bed and at least a portion of the reaction chamber or positioned between at least a portion of the second bed and at least a portion of the reaction chamber.

The present disclosure relates to a regenerative thermal oxidizer comprising at least a first transfer chamber and at least a second transfer chamber, wherein the first transfer chamber comprises a first bed and the second transfer chamber comprises a second bed; at least one reaction chamber in fluid flow communication with the first transfer chamber and with the second transfer chamber; and one or more first waste gas inlet for introducing at least a first portion of waste gas into the regenerative thermal oxidizer positioned between at least a portion of the first bed and at least a portion of the reaction chamber or positioned between at least a portion of the second bed and at least a portion of the reaction chamber.

A method for reducing dust removal electric field couplings includes the following steps: selecting a ratio between a dust collection area of a dust removal electric field anode and a discharge area of a dust removal electric field cathode to be 1.667:1-1680:1. A dust removal electric field anode and/or dust removal electric field cathode size is selected so that the number of electric field couplings is less than or equal to 3. The number of electric field couplings is reduced, electric field energy consumption is low, electric field coupling consumption for an aerosol, water mist, oil mist and loose smooth particulate matter is reduced, and electric field energy is saved.

A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating the dusts after wet washing or spraying, and then conveying into a tailing sludge blending device (5) by means of a conveying device, mixing and stirring the tailing sludge and original sludge, conveying the obtained mixture into the drum (1), and drying the mixture to realize zero discharge of undried sludge.

The present invention discloses methods for extracting and recycling ammonia in MOCVD processes by FTrPSA. Through pretreatment, medium-shallow temperature PSA concentration, condensation and freezing, liquid ammonia vaporization, PSA ammonia extraction, and ammonia gas purification procedures, ammonia-containing exhaust gases from MOCVD processes are purified to meet the electronic-level ammonia gas standard required by the MOCVD processes, so as to implement recycling and reuse of the exhaust gases, where the ammonia gas yield is greater than or equal to 70-85%. The present invention solves the technical problem that atmospheric-pressure or low-pressure ammonia-containing exhaust gases in MOCVD processes cannot be returned to the MOCVD processes for use after being recycled, and fills the gap in green and circular economy development of the LED industry.