38results about How to "Suitable for long cycle operation" patented technology

The invention relates to a cyclone-filtering-membrane combined recycle hydrogen purifying method and a device, providing the cyclone-filtering- membrane combined recycle hydrogen purifying method. The method comprises the following steps: performing cyclone separation on recycle hydrogen raw material gas to remove drops in the recycle hydrogen; filtering the recycle hydrogen raw material gas subject to cyclone separation to further remove fine drops in the recycle hydrogen; and performing membrane separation on the filtered recycle hydrogen raw material gas to remove impure gases in the recycle hydrogen so as to obtain concentrated hydrogen. The invention also provides the cyclone-filtering-membrane combined recycle hydrogen purifying device.

The invention relates to the denitrification of refinery hydrogen streams, and provides a method and a device for denitrifying a refinery hydrogen stream. The method comprises the steps: not carrying out denitrifying treatment on the stream when the nitrogen content of the hydrogen stream is relatively low; feeding the nitrogen-containing hydrogen stream into the denitrifying device for denitrifying treatment when the nitrogen content of the hydrogen stream reaches a certain value, wherein the hydrogen stream requires to be fed to a compressor for pressurization after denitrification due to pressure drop caused during the denitrification. The nitrogen content is subjected to correlated measurement by using a monitoring device, and is used as a criterion for starting denitrifying operation. According to the method and the device, the hydrogen stream comprises a circulating hydrogen stream and a discharge stream of a hydrogen by-production device. The method can be used for optimizing equipment of the existing methods so as to increase the utilization ratio of byproduct hydrogen. The invention further provides the hydrogen stream denitrifying device.

The invention discloses a solid vortex centrifugal separation device and an oil spillingskim separating method thereof. The solid vortex centrifugal separation device comprises an outer support, a columnar rotary drum, an inlet pipeline, a pre-rotary guide vane, gratings, a central fixing shaft, a water phase overflow weir, an oil phase overflow weir, a water phase outlet pipe, an oil phase outlet pipe and a gas phase outlet pipe, wherein the inlet pipeline and the columnar rotary drum are coaxial, the pre-rotary guide vane is arranged at the tail end of the inlet pipeline, and the columnar rotary drum is divided into a plurality of mutually independent fan-shaped separation zones by the gratings. The columnar rotary drum is driven to rotate and produce a centrifugal force by adopting an electric motor so as to perform gradual water phase and oil phase separation, a separated oil phase flows into the oil phase outlet pipe through the oil phase overflow weir and is discharged into an oil storage cabin of an oil spilling chip. Water reaching the standard is directly discharged out through the water phase overflow weir and the water phase outlet pipe. Theseparation device is small in size, good in applicability, stable in operation and high in separation efficiency, can achieve efficient oil and water separation without any reagent and meets the requirements of oily water separating devices for oil spilling ships, and the separation efficiency can be up to 99%.