Development of Small-Efficient Tool for Ultrasonic Reactor

2011 ◽  
Vol 421 ◽  
pp. 754-758
Author(s):  
Sheng Dai ◽  
Yun Dian Zhang ◽  
Peng Zai
Keyword(s):  
Reaction Rate ◽  
High Efficiency ◽  
Rate Increase ◽  
Reaction Yield ◽  
Ansys Software ◽  
Efficient Tool ◽  
Modal Frequency ◽  
Impedance Analyzer ◽  
Reaction Rate Increase ◽  
Design Requirements

A small-high efficiency ultrasonic reactor tool is designed by this paper. This tool can promote chemical reaction rate, increase the reaction yield. Having analyzed its modal frequency with ANSYS software and assembled the manufactured tool with transducer and horn, we can use Impedance analyzer to test the actual frequency. Since there are only minor errors between actual resonant frequency and the modal frequency, this method meets the design requirements.

scholarly journals EKSPERIMEN PEMBENTUKAN KERAK GIPSUM PADA PIPA BERALIRAN LAMINIR DENGAN PARAMETER LAJU ALIR DAN ADITIF ION CU2+ : KAJIAN KINETIS

2012 ◽  
Vol 16 (3) ◽  
pp. 152
Author(s):  
Wiji Mangestiyono ◽  
A.P. Bayuseno ◽  
Stefanus Muryanto
Keyword(s):  
Kinetic Study ◽  
Flow Rate ◽  
Production Cost ◽  
Reaction Rate ◽  
Rate Increase ◽  
Industrial Process ◽  
Reaction Rate Increase ◽  
Rate Decrease ◽  
Flow Rate Increase ◽  
Gypsum Scaling

Wiji Mangestiyono, , A.P. Bayuseno, Stefanus Muryanto, in this paper explain that the problem of gypsum scaling becomes a trouble for some industry in which use some water for its system. Some disadvanteges come up because of : the time of industrial process will be more longer and production cost increase necesery.To prevent the growth of scale, the experiment must be done. Researcher try to answer this problem so an experimental about kinetic study of gypsum scaling established. Flowrate would be a parameter with assume that it has effect on reaction flow. The result of  this experiment are : reaction rate increase when flow rate increase; adition some aditives becomes reaction rate decrease. Keywords : crystal, flow rate, reactio rate, gipsum

Prediction of Chemical Reaction Yield in a Microreactor and Development of a Pilot Plant Using the Numbering-Up of Microreactors

2010 ◽  
Author(s):  
Shigenori Togashi ◽  
Yukako Asano ◽  
Yoshishige Endo
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Chemical Reaction ◽  
Rate Constant ◽  
Pilot Plant ◽  
Reaction Rate ◽  
Main Product ◽  
Reaction Rate Constant ◽  
Reaction Yield ◽  
Production Scale

The chemical reaction yield was predicted by using Monte Carlo simulation. The targeted chemical reaction of a performance evaluation using the microreactor is the consecutive reaction. The main product P1 is formed in the first stage with the reaction rate constant k1. Moreover, the byproduct P2 is formed in the second stage with the reaction rate constant k2. It was found that the yield of main product P1 was improved by using a microreactor when the ratio of the reaction rate constants became k1/k2 >1. To evaluate the Monte Carlo simulation result, the yields of the main products obtained in three consecutive reactions. It was found that the yield of the main product in cased of k1/k2 >1 increased when the microreactor was uesd. Next, a pilot plant involving the numbering-up of 20 microreactors was developed. The 20 microreactor units were stacked in four sets, each containing five microreactor units arranged. The maximum flow rate when 20 microreactors were used was 1 × 104 mm3/s, which corresponds to 72 t/year. Evaluation of the chemical performance of the pilot plant was conducted using a nitration reaction. The pilot plant was found to capable of increasing the production scale without decreasing the yield of the products.

The Design and Analysis of Ultrasonic Roll Welding Head and Tool

2012 ◽  
Vol 579 ◽  
pp. 357-364
Author(s):  
Kuen Ming Shu ◽  
Wen Hsiang Hsieh ◽  
Yu Guang Li ◽  
Chi Wei Chi ◽  
Yi Shen Li
Keyword(s):  
Parametric Model ◽  
Solar Panels ◽  
Ansys Software ◽  
Glass Substrates ◽  
Bending Mode ◽  
Amplification Rate ◽  
Welding Head ◽  
Design Requirements ◽  
Substrate Surfaces ◽  
Amplitude Amplification

Solar panels conduct electricity through aluminum strips on substrate surfaces. Ultrasonic roll welding can weld the conductive aluminum strips onto the glass substrates. This paper illustrates vibration characteristics and optimal design of amplitude horns used in the ultrasonic welding roll. Based on theoretical equations, this study used the ANSYS software to establish the parametric model according to design requirements. With the parametric model as the initial design, this study conducted modal analysis and harmonic analysis to obtain the vertical mode and disc bending mode of the horn, and measured the resonant frequency, amplitude amplification rate and stress distribution. Finally, this study implemented and verified the optimal coupled disc tool of the ultrasonic horn.

scholarly journals Mega primer-mediated molecular cloning strategy for chimaeragenesis and long DNA fragment insertion

2017 ◽  
Vol 37 (2) ◽  
Author(s):  
Hui Zhang ◽  
Chang-Jun Liu ◽  
Hui Jiang ◽  
Lu Zhou ◽  
Wen-Ying Li ◽  
...  
Keyword(s):  
Molecular Cloning ◽  
High Efficiency ◽  
Low Cost ◽  
Plasmid Vector ◽  
Efficient Tool ◽  
Overlap Extension ◽  
Cloning Strategy ◽  
Dna Fragment ◽  
Fragment Insertion ◽  
Dpni Digestion

Molecular cloning methods based on primer and overlap-extension PCR are widely used due to their simplicity, reliability, low cost and high efficiency. In this article, an efficient mega primer-mediated (MP) cloning strategy for chimaeragenesis and long DNA fragment insertion is presented. MP cloning is a seamless, restriction/ligation-independent method that requires only three steps: (i) the first PCR for mega primer generation; (ii) the second PCR for exponential amplification mediated by the mega primers and (iii) DpnI digestion and transformation. Most importantly, for chimaeragenesis, genes can be assembled and constructed into the plasmid vector in a single PCR step. By employing this strategy, we successfully inserted four DNA fragments (approximately 500 bp each) into the same vector simultaneously. In conclusion, the strategy proved to be a simple and efficient tool for seamless cloning.

scholarly journals Influence of Blade Wrap Angle on the Hydrodynamic Radial Force of Single Blade Centrifugal Pump

2021 ◽  
Vol 11 (19) ◽  
pp. 9052
Author(s):  
Linwei Tan ◽  
Yongfei Yang ◽  
Weidong Shi ◽  
Cheng Chen ◽  
Zhanshan Xie
Keyword(s):  
Centrifugal Pump ◽  
Flow Rate ◽  
High Efficiency ◽  
Rate Increase ◽  
Radial Force ◽  
Horizontal Component ◽  
Flow Rate Increase ◽  
Wrap Angle ◽  
External Characteristics ◽  
Blade Wrap Angle

To investigate the effect of blade wrap angle on the hydrodynamic radial force of a single blade centrifugal pump, numerical simulation is conducted on the pumps with different blade wrap angles. The effect of the wrap angle on the external characteristics and the radial force of a single blade centrifugal pump was analyzed according to the simulation result. It is found that, with the increase of the blade wrap angle, the head and efficiency of the single blade centrifugal pump are improved, the H-Q curve becomes steeper, and the efficiency also increased gradually, while the high-efficiency area is narrowed. The blade wrap angle has a great effect on the radial force of the single blade centrifugal pump. When the blade wrap angle is less than 360°, the horizontal component of the radial force is negative and the value is reduced with the increase of the wrap angle of the blade. When the wrap angle is larger than 360°, the horizontal component of the radial force is positive and the value increases with the increase of the wrap angle. Under part-loading conditions, the radial force of the single blade pump is significantly reduced with the increase of the blade wrap angle. When the wrap angle is smaller than 360°, the radial force decreases with the flow rate increase. In the condition that the wrap angle is larger than 360°, the radial force increases with the flow rate increase.

Design of Switch Transformer about the Push-Pull Switch Power Supply

2013 ◽  
Vol 341-342 ◽  
pp. 1266-1270
Author(s):  
Gang Wu ◽  
Yu Tang
Keyword(s):  
Power Supply ◽  
High Efficiency ◽  
Skin Effect ◽  
Circuit Simulation ◽  
Switching Power Supply ◽  
Switching Power ◽  
The Family ◽  
Switch Power Supply ◽  
Design Requirements ◽  
Switch Power

the push-pull switch power is a kind of form in the family. It has the characteristics of good voltage output, high efficiency, the simple circuit and so on. On the design of the push-pull switch power supply, the key and difficult point is the design of switch transformer. Taking the switch transformer of a push-pull switching power supply as the research object and based on the design requirements, this paper aims to realize the calculation of the coil turns in switching transformer. Meanwhile, under the consideration of the skin effect and the proximity effect and the choices of switch transformers wires and the methods of wires winding, the design of switch transformer of the push-pull switch power supply has been completed by circuit simulation and implementation.

Finite Element Analysis of the Chassis for Sugarcane Leaf Cutting Off Returning to Field Machinery

2014 ◽  
Vol 915-916 ◽  
pp. 305-308
Author(s):  
Jing Wang ◽  
Yu Xing Wang ◽  
Yan Qin Tang ◽  
Dian Wu Zhang ◽  
Zhen Hua Xu ◽  
...  
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Maximum Stress ◽  
Excitation Frequency ◽  
Allowable Stress ◽  
Ansys Software ◽  
Element Analysis ◽  
Stress Contour ◽  
Leaf Cutting ◽  
Design Requirements

By modeling of sugarcane leaf cutting off returning to field machinery chassis and loading, this paper simplifies reasonably several different conditions of the chassis to the two forms. The finite element is used for the solution of the problem by using ANSYS software, solving the node stress contour of the chassis. Compared the maximum stress in the most dangerous working conditions to the allowable stress of the material, the result verifies the chassis strength to meet the design requirements. According to the vibration of the chassis at work, analyzing the first sixth modal of the chassis, and comparing with excitation frequency shows that the design of the chassis avoids the excitation frequency, which does not cause resonance at work. The results show that the chassis meets the design requirements.

scholarly journals A Kriging Surrogate Model for the Interference Reduction in the Settlement Surveillance Sensors of Steel Transmission Towers

2019 ◽  
Vol 9 (16) ◽  
pp. 3343 ◽  
Author(s):  
Jiajia Shi ◽  
Liu Chu ◽  
Eduardo Souza de Cursi
Keyword(s):  
Surrogate Model ◽  
High Efficiency ◽  
Computational Cost ◽  
Element Model ◽  
Kriging Surrogate Model ◽  
Transmission Tower ◽  
Modal Frequency ◽  
Interference Reduction ◽  
Transmission Towers ◽  
Tower Foundation

The utilization of modal frequency sensors is a feasible and effective way to monitor the settlement problem of the transmission tower foundation. However, the uncertainties and interference in the real operation environment of transmission towers highly affect the accuracy and identification of modal frequency sensors. In order to reduce the interference of modal frequency sensors for transmission towers, a Kriging surrogate model is proposed in this study. The finite element model of typical transmission towers is created and validated to provide the effective original database for the Kriging surrogate model. The prediction accuracy and convergences of the Kriging surrogate model are measured and confirmed. Besides the merits in computational cost and high-efficiency, the Kriging surrogate model is proven to have a satisfied and robust interference reduction capacity. Therefore, the Kriging surrogate model is feasible and competitive for interference filtration in the settlement surveillance sensors of steel transmission towers.

scholarly journals An External Energy Independent WO3/MoCl5 Nano-Sized Catalyst for the Superior Degradation of Crystal Violet and Rhodamine B Dye

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 642 ◽  
Author(s):  
Dongin Kim ◽  
Geonwoo Kim ◽  
Hyeonbin Bae ◽  
Eunwoo Kim ◽  
Byunghyun Moon ◽  
...  
Keyword(s):  
Crystal Violet ◽  
Rhodamine B ◽  
Degradation Product ◽  
Reaction Rate ◽  
Advanced Oxidation Process ◽  
Reaction Rate Constant ◽  
Thermal Method ◽  
External Energy ◽  
Superior Result ◽  
Reaction Rate Increase

In this study, the synthesis of a novel catalyst WO3/MoCl5 was carried out by the thermal method. The method gave an entirely different product compared to previous studies that doped Mo on the surface of semiconductor metal oxides. The degradation reaction of crystal violet (CV) and rhodamine B (RB) dye were done without any energy source. The results showed an incomparably superior result for degradation, with a reaction rate constant of 1.74 s−1 for 30 ppm CV, 1.08 s−1 for 30 ppm RB, and a higher value than 1 s−1 for both cases of 50 ppm dye solution. To the author’s knowledge, this catalyst has the highest reaction rate compared to other studies that targeted CV and RB, with an immense reaction rate increase of more than 100 times. Reusability of the three trials was verified, and the only process required was washing the catalyst after the reaction. One of the drawbacks of the advanced oxidation process (AOP), which has a degradation percent limit, has been solved, since 100% mineralization of the dye was available using this catalyst. FT-IR spectroscopy revealed that W-O-Mo linkage was successfully processed while Mo-Cl linkage has retained. 1H-NMR spectroscopy results confirmed that the degradation product of the dye treated by simple MoCl5 and WO3/MoCl5 was different. Deep inspection of specific regions of NMR fields gave necessary information about the degradation product using WO3/MoCl5.

Sign in / Sign up

Export Citation Format

Share Document