6 results about "Hydrogen impurity" patented technology

The invention provides hydrogen fuel cell hydrogen impurity detection equipment which comprises a detection equipment box, two supporting sleeve rods are fixedly arranged on one side of the top end of the detection equipment box, the positions of the supporting sleeve rods on the two sides are symmetrically arranged, and the outer end faces of the supporting sleeve rods on the two sides are rotationally connected with a turnover sealing turnover cover. And a detection cavity with an upward opening is formed in the detection equipment box. According to the invention, an electrochemical detector and a chromatographic instrument detector are combined, the concentration of hydrogen and the content of impurities in the hydrogen can be accurately measured, comprehensive detection data can be provided, and intelligent control of equipment can be realized through a control chip and a man-machine control panel which are arranged in a chip control room; all the parts are clear in function and independent from one another, and assembling, debugging and maintaining of equipment are facilitated. Meanwhile, the expandability and the flexibility of the equipment are improved through the modular design, and customization and upgrading can be conveniently carried out according to actual requirements.

The invention belongs to the technical field of inert gas purification and recovery, and relates to a device for removing carbon, oxygen and hydrogen impurities from argon tail gas and a treatment method thereof, the device comprises a first reactor, a second reactor and a third reactor which are communicated in sequence; an inlet of the first reactor is connected with an argon tail gas conveying pipe and a hydrogen conveying pipe; a first regulating valve is arranged on the hydrogen conveying pipe; the first analyzer is connected to an outlet of the first reactor; the second analyzer is connected to an outlet of the second reactor; the temperature measuring unit is connected to an inlet of the second reactor; the control unit controls the opening degree of the first adjusting valve and the second adjusting valve. The device and the method have the advantages that the device and the method are used for removing carbon, oxygen and hydrogen impurities in argon tail gas, and can solve the problems of high potential safety hazard, high management difficulty, low recovery rate, investment increase and energy consumption increase caused by an excessive hydrogenation and oxygen removal process in the conventional argon recovery device and method; the process is effectively simplified, the equipment investment is reduced, the energy consumption is reduced, and the potential safety hazard is eliminated.

The application discloses a device and method for detecting hydrogen impurity content in a pipeline, and relates to the technical field of hydrogen detection.The application uses a time-domain dynamic characteristic analysis algorithm, utilizes the difference between fluid pressure disturbance and impurity diffusion adsorption in the time response scale, accurately separates the high-frequency transient fluctuation characteristics caused by piston mechanical vibration from the original signal, and effectively filters out the interference caused by flow rate and pressure pulsation.Meanwhile, an adaptive model containing mechanical friction hysteresis logic is constructed, which can not only lock and inhibit the false drift of the dead zone state of the piston caused by static friction force, but also can smooth and repair the elastic overshoot generated in the moment when the piston breaks the static friction force, and deeply compensate for the hardware physical defects, so that the device can still output the detection results with high signal-to-noise ratio and truly reflecting the impurity concentration without pursuing extremely high mechanical processing precision.

The invention provides a catalyst applied to synthesis of medroxyprogesterone acetate and a preparation method thereof, and the preparation method comprises the following steps: (1) uniformly mixing PdCl2, ammonia water and water, and heating to prepare a precursor solution; (2) dispersing a carrier in water, and dropwise adding the precursor solution to obtain a Pd / carrier solution; and (3) dropwise adding the reducing agent solution into the Pd / carrier solution, stirring and aging, and carrying out suction filtration, washing and drying to obtain the catalyst. The catalyst shows excellent catalytic performance in hydrogenation reaction for preparing medroxyprogesterone acetate, the yield and purity of a target product can be remarkably improved, and reaction energy consumption and cost are reduced. When the catalyst is applied to hydrogenation, the raw material conversion rate is greater than 99%, the ratio of a target product to an isomer is up to about 7, and the hydrogen impurity content of the obtained product is less than 1%.

The adsorption bed with the good hydrogen impurity removal effect comprises a reaction treatment assembly, the reaction treatment assembly comprises a treatment barrel, a barrel cover and a bearing ring, the top of the treatment barrel is movably connected with the barrel cover, and the bearing ring is fixedly installed in the middle of the treatment barrel; the uniform and efficient impurity removal assembly comprises a containing cylinder, a sealing cover, an adsorbent layer and a metal net, the containing cylinder is movably placed on the top of the bearing ring, the adsorbent layer and the metal net are movably installed in the containing cylinder, and the top of the containing cylinder is movably connected with the sealing cover; the total number of the adsorbent layers is three, the total number of the metal nets is two, and the metal nets are placed among the adsorbent layers. According to the utility model, the adsorbent layer is filled in the containing cylinder in a segmented manner, so that a small amount of impurities can be adsorbed for multiple times, the contact area between gas and the adsorbent is increased, the concentrated accumulation of the adsorbent can be avoided, and the adsorption process is more uniform and efficient.

A method for removing hydrogen from a dry gas comprising hydrogen as an impurity using at least one layer comprising (e.g., consisting of) hopcalite having a zero point of charge (ZPC) in the range of about 6.9 to about 7.7 and / or an ionic conductivity in deionized water as a 10 wt% slurry of no more than about 500 S / cm is improved.