摘要:
The invention relates to a system for separating and storing molecules, atoms and/or ions from air, wherein at least one air collecting means comprises at least one collecting tank configured to receive molecules, atoms and/or ions separated from air through an inlet and at least one membrane adapted to fit in the inlet of the collecting tank and configured to let a specified pre-determined size of molecules, atoms and/or ions to pass through the at least one membrane. The system further comprises at least one storing tank for storing the separated molecules, atoms and/or ions, and at least one outlet. The system according to the invention can be used to utilize the energy present in such molecules or separate unwanted gases present in the air.
摘要:
The present invention relates a process and apparatus that recovers a helium rich stream from a mixed gas having low concentrations of helium therein. More specifically, the invention relates to an integrated process and apparatus for treating a mixed feed gas from an operating process that produces a liquid product from natural gas containing helium, such as processes that produce ammonia, methanol, or liquid hydrocarbons.
摘要:
The disclosed process provides an improved process for manufacturing and recovering butanediol. More particularly, the disclosed process relates to an improved process for manufacturing and recovering butanediol from feedstock comprising butynediol in a reaction zone at reaction conditions, comprising the steps of reacting butynediol in the liquid phase and hydrogen in a reaction zone containing hydrogenation catalyst, recovering liquid phase product from the reaction zone, passing the recovered liquid phase product into a first liquid pressure let down vessel maintained at specific conditions, recovering first and second streams from the first liquid pressure let down vessel as liquid bottoms and overhead vent gas, respectively, passing the first stream liquid bottoms recovered to a second liquid pressure let down vessel maintained at specific conditions, and the second stream vent gas recovered to a vent gas cooler maintained at specific conditions, passing the gas from the vent gas cooler to a hydrogen recovery zone comprising a membrane filter, whereby the permeate comprises high purity hydrogen gas and the retentate comprises contaminants, recycling the permeate to the reaction zone, and recovering first and second streams from the second liquid pressure let down vessel as liquid bottoms comprising butanediol and overhead vent gas, respectively.
摘要:
A system for splitting water and producing hydrogen for later use as an energy source may include the use of a photoactive material including PCCN and plasmonic nanoparticles. A method for producing the PCCN may include a semiconductor nanocrystal synthesis and an exchange of organic capping agents with inorganic capping agents.
摘要:
A method is disclosed for producing high purity, high pressure hydrogen from a low pressure synthesis gas production process. The low pressure synthesis gas is produced from steam or carbon dioxide reforming of hydrocarbons, autothermal reforming of hydrocarbons or partial oxidation of hydrocarbons. The resulting low pressure synthesis gas mixture is fed to an electro-chemical cell wherein hydrogen is separated from the low pressure synthesis gas mixture and subjected to compression and high pressure; high purity hydrogen is recovered from the electro-chemical cell.
摘要:
This present invention provides a method to recover hydrogen and carbon dioxide, preferably at least 50%, even more preferably at least 80% and most preferably at least 90% of the carbon dioxide. The proposed process combines hydrogen selective membranes (7) and carbon dioxide selective membranes (10) together with carbon dioxide separation units (5) such that hydrogen and carbon dioxide are produced.
摘要:
Disclosed herein is a gas separation process for the production of hydrogen by autothermal reforming of natural gas, employing a hydrogen separation step and with simultaneous recovery of carbon dioxide using carbon dioxide-selective membrane separation. Residual gas from the hydrogen and carbon dioxide recovery is recycled back to the autothermal reformer.
摘要:
Disclosed herein is a methanol production process (311) that includes a membrane separation step or steps (305,319). Using the process of the invention, the efficiency of methanol production from syngas is increased by reducing the compression requirements of the process and/or improving the methanol product yield. As an additional advantage, the membrane separation step (305) generates a hydrogen - rich stream (307) which can be sent for other uses. An additional benefit is that the process of the invention may debottleneck existing methanol plants if more syngas or carbon dioxide is available, allowing for feed of imported carbon dioxide into the synthesis loop. This is a way of sequestering carbon dioxide.
摘要:
The present invention provides a process for recovering hydrogen and carbon dioxide from a process stream utilizing a carbon dioxide separation unit and two membrane separation units. The present invention further provides a process within a hydrogen generation plant to increase recovery of hydrogen and capture equal to or greater than 80% of the carbon dioxide in the syngas stream. By using the process of the present invention, especially in terms of a hydrogen generation plant, it is possible to increase recovery of hydrogen and capture of the carbon dioxide in the syngas stream by balancing the recycle of the hydrogen rich permeate from the hydrogen membrane separation unit to the process unit and/or the water gas shift as capacity allows when a carbon dioxide separation unit, a carbon dioxide membrane separation unit and a hydrogen membrane separation unit are utilized.
摘要:
Techniques are generally described herein for the design and manufacture of hydrogen generation apparatuses and systems. Other embodiments may also be disclosed and claimed. Some methods described herein pressing together a first end plate, one or more intermediate plates, and a second end plate using a press to form a hydrogen purifier module, and placing a plurality of clips around the hydrogen purifier module to hold the first end plate, the one or more intermediate plates, and the second end plate together.