484results about How to "Fast regeneration" patented technology

The invention provides vacuum swing adsorption processes that produce an essentially carbon monoxide-free hydrogen or helium gas stream from, respectively, a high-purity (e.g., pipeline grade) hydrogen or helium gas stream using one or two adsorber beds. By using physical adsorbents with high heats of nitrogen adsorption, intermediate heats of carbon monoxide adsorption, and low heats of hydrogen and helium adsorption, and by using vacuum purging and high feed stream pressures (e.g., pressures of as high as around 1,000 bar), pipeline grade hydrogen or helium can purified to produce essentially carbon monoxide -free hydrogen and helium, or carbon monoxide, nitrogen, and methane-free hydrogen and helium.

The invention relates to a degradable synthetic polymer and natural extracellular matrix composite material, an artificial blood vessel and a preparation method thereof. Degradable synthetic polymer components during preparation can be selected from one or more materials to perform proportioning; support materials with different fiber diameters, different fiber arrangement, different apertures anddifferent pore structures can be prepared through various technologies such as electrospinning, wet spinning, melt spinning, 3D printing, pouring, phase separation and particle leaching; and naturalextracellular matrix components are wide in sources, can be selected from vascular tissues (such as the arteries and veins of pigs and cows) of different species of animal sources or the vascular tissues (such as umbilical cords) of human donors, and can flexibly adjust the components and content thereof according to needs. The composite material and the artificial blood vessel prepared by the preparation technology can have good mechanical properties, controllable space structures, appropriate degradation velocity and excellent biocompatibility and biological induction activity; and the composite material, the artificial blood vessel and the preparation method are simple in preparation technology, high in controllability, mild in condition and suitable for large-scale industrial production.

A process for the regeneration of loaded ion-exchange resin comprising (a) providing loaded resin for regeneration; (b) providing first stage and third stage regenerant suitable for regenerating loaded resin; (c) providing a plurality of regeneration vessels; (d) filling a regeneration vessel with a desired amount of the loaded resin before filling another regeneration vessel; (e) once a regeneration vessel has been filled, contacting the loaded resin within the vessel with first stage regenerant in a plug flow to provide a first stage regenerated resin; (f) contacting the first stage regenerated resin with third stage regenerant in a plug flow to provide regenerated resin and (g) removing and collecting third stage regenerant from a vessel containing regenerated resin and adding the collected regenerant to the first stage regenerant.