Abstract: A catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction as well as a preparation method and use thereof are provided. The catalyst includes a zero-valent iron and phosphorus co-modified carbon material which includes a carbon material as a carrier, a zero-valent iron supported onto the carrier and serving as an active component, and a phosphate functional group formed on the surface of the carbon material. The preparation method includes: co-modifying a carbon material using a ferric salt and organic phosphorus to obtain the catalyst for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction. The present application further provides a method for continuous production of 1,1,1,3-tetrachloropropane through gas-solid reaction.

Abstract: A radiation heat dissipation and radiation heat collection-based cold and hot central air conditioning system includes a compressor, a liquid storage device, an indoor unit and an outdoor unit connected in sequence, the outdoor unit includes a radiation heat collector; the radiation heat collector includes a protective plate, a heat absorption plate, and a plate core; the heat absorption plate is located between the plate core and the protective plate; the plate core comprises a heat exchange medium inlet end and a heat exchange medium outlet end; and the heat absorption plate is used for transferring absorbed heat to a heat exchange medium circulating in the plate core. The heat absorption plate collects heat, and then transfers the heat to the heat exchange medium flowing in the plate core; and the heat exchange medium carrying the heat is compressed by the compressor, and then enters the indoor unit for heat exchange.

Abstract: A three-dimensionally distributed liquid atomization heat exchanger includes a housing, an air extraction device, a heat exchange device and a liquid atomization device. The air extraction device is used for forming negative pressure in the housing. The liquid atomization device comprises a liquid supply pipe, atomization discharge pipes and atomization heads. The atomization discharge pipes are connected to the liquid supply pipe. The atomization heads are arranged on the atomization discharge pipes. The atomization discharge pipes are three-dimensionally distributed in the housing. Control devices are arranged on the atomization heads to control the atomization heads to be opened or closed. The control devices are connected to a control center which can, according to a preset time, a preset percentage of the atomization heads which are open and a randomization function, select randomly the atomization heads to be opened or closed.

Abstract: A single-stage carbon dioxide multi-split cooling and heating multifunctional central air conditioner, comprising a single-stage carbon dioxide circulation system using carbon dioxide as a circulation working medium; the single-stage carbon dioxide circulation system comprises an outdoor unit and a plurality of end heat exchangers provided in parallel; and the carbon dioxide medium performs cooling and/or heating in a circulating manner in a carbon dioxide compressor, an outdoor heat exchanger, a liquid storage tank and the end heat exchangers which are in communication with one another.

Abstract: A carbon dioxide refrigerating system and a refrigerating method thereof. A carbon dioxide refrigerating system, comprising a compressor (10), a condenser (11), a liquid storage device (12), and an evaporator (13) connected in sequence; a suction assembly (15) is arranged between the compressor (10) and the condenser (11), the suction assembly (1%) being in communication with the liquid storage device (12) and in communication with a gas-liquid separator (14), the gas-liquid separator (14) being arranged between the condenser (11) and the liquid storage device (12), and the carbon dioxide gas in the liquid storage device (12) or the gas-liquid separator (14) being capable of being sucked back into the pipeline between the compressor (10) and the condenser (11) by means of the suction assembly (15).

Abstract: Disclosed is a flash closed heat exchanger, comprising a closed housing. A negative pressure fan is provided on the closed housing. A negative pressure environment is formed inside the closed housing by means of the negative pressure fan. A water atomization device is provided inside the closed housing. The water atomization device sprays atomized water into the inside of the closed housing, so that the atomized water evaporates into steam in the negative pressure environment.

Abstract: A composite hydrophobic insulation textile with glass fibers and a first fluoropolymer. The first fluoropolymer and the glass fibers are interspersed with one another with sufficient uniformity to render the composite hydrophobic insulation textile as hydrophobic insulation and is temperature stable up to 600 degrees Fahrenheit.

Abstract: Hydrophobic thermal insulation fiberglass flexible blanket using a textile grade fiberglass is produced by impregnating a hydrophobic polymer (e.g. a fluoropolymer) dispersion into a fiberglass blanket/mat, such as a needle felted fiberglass (FG) blanket/mat. The preferred FG needle felt blanket is a mechanically, rather than organically, bound glass fiber insulating blanket. The hydrophobic polymer dispersion forms a hydrophobic coating on the surface of the fiberglass filaments. Integral hydrophobicity is achieved and maintained without the need to add commonly-used hydrophobic inorganic particles, such as treated silica aerogels or fumed silica. Optionally, to enhance overall hydrophobicity and to inhibit fibrous surface lofting, a super-hydrophobic coating of fluoropolymer and inorganic particles such as silica particles may be dispersed onto one or more surfaces of the blanket.

Abstract: A hydrophobic needle-felted insulation blanket having a textile-grade needle felted fiberglass blanket having a density in the range of 4 to 15 lb/ft3 (65 to 250 g/L) contains a uniform hydrophobic fluoropolymer disposed homogeneously throughout the textile grade needle felted fiberglass blanket without creating a higher density of hydrophobic fluoropolymer near edges of the textile-grade needle felted fiberglass blanket. The fluoropolymer has a melting point over 5500 Fahrenheit and decomposed residual hydrophilic compounds uniformly disposed through the textile grade needle felted fiberglass blanket. The finished hydrophobic needle-felted insulation blanket is (i) temperature stable up to 5500 Fahrenheit, (ii) moldable, (iii) silica dust free, and thereafter retains a selected shape and the finished blanket will not decompose, disintegrate, or lose structural integrity when submerged in water.

Abstract: Hydrophobic thermal insulation fiberglass flexible blanket using a textile grade fiberglass is produced by impregnating a hydrophobic polymer (e.g. a fluoropolymer) dispersion into a fiberglass blanket/mat, such as a needle felted fiberglass (FG) blanket/mat. The preferred FG needle felt blanket is a mechanically, rather than organically, bound glass fiber insulating blanket. The hydrophobic polymer dispersion forms a hydrophobic coating on the surface of the fiberglass filaments. Integral hydrophobicity is achieved and maintained without the need to add commonly-used hydrophobic inorganic particles, such as treated silica aerogels or fumed silica. Optionally, to enhance overall hydrophobicity and to inhibit fibrous surface lofting, a super-hydrophobic coating of fluoropolymer and inorganic particles such as silica particles may be dispersed onto one or more surfaces of the blanket.