The present disclosure provides a metal-organic framework material/membrane composite material, a preparation method and a use thereof, which belongs to the technical field of water treatment. The method includes: mixing a membrane material with an alkali liquor, and performing a hydrolysis to obtain a hydrolyzed membrane; impregnating the hydrolyzed membrane in a metal salt aqueous solution and a framework organic solution in sequence, to form a metal-organic framework material/membrane composite material. In the composite material obtained by this method, the bonding strength between the membrane material and the metal-organic framework material is high, and it is not easy to separate them during the use and the composite material could be widely used. At the same time, the metal-organic framework material/membrane composite material obtained by this method has dual functionality, and thus could improve the efficiency of water treatment.

The present invention provides a particle-coated fiber comprising a fiber and particles coated on the fiber, and a method for forming the same. The method comprises: providing a suspension comprising the particles; providing a polymer solution for forming the fiber; electrospraying the suspension toward an area of a collector; and during the electrospraying of the suspension, electrospinning the polymer solution into the fiber and directing the fiber toward the area so as to meet with the suspension on the area and on the way to the area such that the particles are coated on the fiber during and after the formation of the fiber thereby forming the particle-coated fiber on the area. By the present method, the particles can be crowed on the surface of the fiber, and the adhesiveness between the fiber and the particles can be substantially enhanced.

The present invention concerns a closed cycle combustion system for endothermic engines M, comprising: —Means Z for filtering combustion air entering in endothermic engines M; —Means A for molecular re-aggregation of the oxygen supplied by said means Z and entering in endothermic engines M; —Tanks T for fuels or composite mixtures for feeding endothermic engines M; —Means E for producing oxygen and hydrogen; —Means I for the introduction into endothermic engines M of fuels or composite mixtures from tanks T, together with oxygen and hydrogen from said means E; —Means R for exhaust gases recovery released by endothermic engines M and for the partial reintroduction of said exhaust gases into combustion or reaction chambers of said endothermic engines M; —Means RD for cooling the exhaust gases reintroduced into said combustion or reaction chambers of said endothermic engines M; —Means C1 and C2 for filtering the exhaust gases released from endothermic engines M, and supplied by means R; —Means S for confining the polluting substances obtained from the filtering of said exhaust gases released from said endothermic engines M, supplied by said means R.

A membrane comprising a crystalline material deposited on a porous support. The crystalline material is made of tectosilicate with a portion of the Si atoms substituted with metal atoms. The membrane is useful in the separation of oil and water.

A zeolite membrane composite includes a porous support and a zeolite membrane formed on the support. The zeolite membrane includes a low-density layer that covers the support, and a compact layer that covers the low-density layer. The compact layer has a higher content of a zeolite crystalline phase than the low-density layer. By in this way forming the compact layer on the low-density layer that covers the support, the thin compact layer with no defects can be formed more easily than in the case where a compact layer is formed directly on a support.

To regenerate, by a simple method, an inorganic separation membrane separating non-hydrocarbon gas contained in treatment target gas. Provided in separating the non-hydrocarbon gas contained in the treatment target gas is a regeneration gas supply path supplying moisture-containing regeneration gas to a primary side of the inorganic separation membrane in a separation membrane module. As a result, it is possible to regenerate the inorganic separation membrane by supplying moisture-containing CO2 gas to the inorganic separation membrane and then supplying dry natural gas. Accordingly, there is no need to use dry regeneration gas and the CO2 gas supplied via, for example, a pipeline can be used as it is.

A device for exchange of water molecule and temperature between two fluids. The device comprises thin molecular sieve membrane sheets that allow water molecules to permeate through while blocking cross-over of the exchanging fluids. The device provides two sets of flow channels having a hydraulic diameter ranged from 0.5 to 2.0 mm for respective process and sweep fluid flows. The two sets of the channels are separated by a membrane sheet having a thickness less than 200 μm. The thin molecule sieve membrane may be prepared by forming an ultra-thin zeolite membrane layer on a porous metal-based support sheet which provides very high water permeance so that the exchange can be conducted in a compact membrane module at high throughput. The device can be used to remove water from a process stream of higher water content by use of a sweep fluid of lower water content or higher water affinity. For example, the device can be used to condition outdoor fresh air close to the temperature and humidity of indoor air by conducting humidity and heat exchange between the fresh air flow drawn from outdoors and waste air discharged indoors.

An object of the present invention is to provide a porous support-zeolite membrane composite ensuring that at the time of separation or concentration with a zeolite membrane, both sufficient throughput and high separation performance are achieved in practice and the present invention relates to a porous support-zeolite membrane composite having a porous support and a zeolite membrane formed on the porous support, wherein part of the zeolite membrane penetrates into the inside of the porous support and the distance from the surface of the porous support to the inside into which the zeolite film penetrates is 5.0 μm or less on average.

An object of the present invention is to provide a porous support-zeolite membrane composite ensuring that at the time of separation or concentration with a zeolite membrane, both sufficient throughput and high separation performance are achieved in practice and the present invention relates to a porous support-zeolite membrane composite having a porous support and a zeolite membrane formed on the porous support, wherein part of the zeolite membrane penetrates into the inside of the porous support and the distance from the surface of the porous support to the inside into which the zeolite film penetrates is 5.0 μm or less on average.

The present invention relates to a polymeric hollow fiber membrane and a carbon molecular sieve hollow fiber membrane, both of which have excellent gas separation performance, and processes for preparing the same. Specifically, the present invention relates to a hybrid polymeric hollow fiber membrane that comprises a glassy polymer containing fluorine and a ladder-structured polysilsesquioxane, a hybrid carbon molecular sieve hollow fiber membrane prepared by pyrolysis thereof, and processes for preparing the same. The hybrid polymeric hollow fiber membrane and the hybrid carbon molecular sieve hollow fiber membrane according to the embodiments of the present invention are excellent in gas flux and selectivity and can have a large surface area per unit volume. Thus, they can be advantageously used for separating gases with a high energy efficiency on a large scale.