Purification Equipment Research Institute

Handan, China

Purification Equipment Research Institute

Handan, China
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Zhou J.,Dalian University of Technology | Zhou J.,Purification Equipment Research Institute | Xu Y.,Purification Equipment Research Institute | Zhou X.,Purification Equipment Research Institute | And 4 more authors.
ChemSusChem | Year: 2011

Seeing double: The synthesis of hydrogen peroxide, an environmentally benign oxidizing agent, from methane in a plasma reactor is investigated. The selectivity of the methane oxidation can be shifted away from H 2O and CO x towards high yields of H 2O 2 and organic oxygenates by changing the structure of plasma reactor, from using a single dielectric to using a double one (see figure). © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Yi Y.,Dalian University of Technology | Zhou J.,Dalian University of Technology | Gao T.,Dalian University of Technology | Guo H.,Dalian University of Technology | And 2 more authors.
AIChE Journal | Year: 2014

Significance: A new generation of double dielectric barrier discharge (DDBD) reactor featured by a metal powder (MP) high voltage electrode is presented. The MP high voltage electrode not only has excellent homogeneous discharge performance but also has the advantage of without regular maintenance. Therefore, the MP-DDBD reactor was proved to be suitable for the uninterrupted and safe synthesis of high purity H2O2 aqueous solution with up to 65 wt % concentration from the H2/O2 mixture. The scale-up synthesis of H2O2 was successfully attempted in an integrated device based on the MP-DDBD reactor. The future practical H2O2 synthesizer based on the MP-DDBD reactor will be small and movable, and therefore, be convenient to supply high purity H2O2 on site for small scale users like semiconductor industry. © 2013 American Institute of Chemical Engineers.

Lu P.,Purification Equipment Research Institute | Wang W.-J.,Purification Equipment Research Institute | Du P.,Aeronautical Military Representatives Office of Navy in Baoding | Wu T.,Purification Equipment Research Institute | And 2 more authors.
Proceedings - 2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2015 | Year: 2015

This paper presents an intelligent vacuum monitoring system for mass spectrometer based on PC104. This system mainly consists of high-speed analog signal acquisition, data filtering based on PIC32, and real-time anti-jamming communication technology. A high-speed AD converter is employed to acquire external physical quantities that are to be monitored. According to the characteristics of AD signal's random disturbance, a moving average filter is used to reduce noise while giving consideration to the real-time request of the system. Afterwards, an error-resilient status transfer mechanism is proposed during communication with the master computer to guarantee transmission reliability. Experimental results show that while possessing good real-time capability and low power consumption, the noise factors of the vacuum and temperature measuring data processed by this filtering algorithm are decreased by 58.4% and 60.2% respectively. Hence, the proposed system satisfies the requirements of real-time monitoring in harsh field condition. © 2015 IEEE.

Chen Z.,Purification Equipment Research Institute | Yang F.,Purification Equipment Research Institute | Chen J.,Purification Equipment Research Institute | Zhou Z.,Purification Equipment Research Institute | Gao X.,Purification Equipment Research Institute
Zhongguo Jiguang/Chinese Journal of Lasers | Year: 2012

Yttrium aluminum garnet (YAG) transparent ceramic has been proved to be one of the best solid-state laser materials in the history of quantum electronics. Its indisputable dominance in solid-state laser application is determined by its unrivalled optical, mechanical and thermal properties. During the fabrication of YAG transparent ceramic, agglomeration of YAG nanopowders can deteriorate the performance of transparent ceramic. YAG nanopowders are prepared by co-precipitation, then deagglomerated by ball milling and adding Dolapix CE-64. YAG nanopowders and its slurry are characterized by X-ray diffraction (XRD), Zeta potential, laser granulometer and scanning electron microscope (SEM). The results show that YAG nanopowders are well deagglomerated by adding 10 percent of Dolapix CE-64 and ball milling of 24 h.

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