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Wang J.X.,Inner Mongolia University of Science and Technology | Cao X.Q.,Inner Mongolia University of Science and Technology | Wu Q.M.,CERI Phoenix Industrial Furnace Co.
Advanced Materials Research | Year: 2014

Developments of products and technologies always follow certain objective law and the same objective law can be applied in different technical fields. the innovation processes of any products follow a law, the development of all technical innovation is toward maximum function. By applying some technical evolution paths, this paper analyses the technical development process of Converter Tilting Machines and forecasts the future development. The evolutionary paths of converter tilting mechanism has been analyzed by using TRIZ Theory, and, the development of Converter Tilting Machine has been forecasted. According to the path toward flexibility, we can forecast that Converter Tilting Machine can be driven by Filed force. © (2014) Trans Tech Publications, Switzerland. Source


Wang J.X.,Inner Mongolia University of Science and Technology | Wang Y.B.,Inner Mongolia University of Science and Technology | Wu Q.M.,CERI Phoenix Industrial Furnace Co.
Advanced Materials Research | Year: 2014

Using the theory of technology evolution of TRIZ blast furnace top charging equipmentevolution route is summarized and analysis system, and the evolution route to forecast the futuredevelopment direction of blast furnace top charging equipment possible. © (2014) Trans Tech Publications, Switzerland. Source


Feng J.-X.,University of Science and Technology Beijing | Jiang M.,University of Science and Technology Beijing | Cao Y.-P.,University of Science and Technology Beijing | Chen Y.-M.,University of Science and Technology Beijing | And 2 more authors.
Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | Year: 2014

To cope with the high NOx emission problem of W-shaped radiant tubes, the influence of diluents in two-stage air combustion on the NOx emission of W-shaped radiant tubes was investigated numerically. Calculation results coincide well with data obtained from experiments. The analysis was carried out for 3 cases: different diluents, stepwise dilution, and diluents together with high temperature air. Compared to diluting with N2, diluting with CO2 produces less NOx. It can reduce the NOx emission blow 4×10-5 by increasing the diluted volume fraction under the condition of ensuring flame stabilization. By stepwise dilution, the secondary air contributes more to NOx reduction than the primary air. The NOx emission can be controlled under 1×10-4 by increasing the diluted volume fraction, even if the temperature of preheated air reaches above 1000 ℃. Source


Feng J.-X.,University of Science and Technology Beijing | Jiang M.,University of Science and Technology Beijing | Zhou W.-H.,University of Science and Technology Beijing | Wu Q.-M.,CERI Phoenix Industrial Furnace Co. | Xiang S.-H.,Baosteel
Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing | Year: 2014

In order to solve the large wall temperature difference and high NOx emission of W-shaped radiant tubes, this article introduces a kind of W-shaped radiant tube with flue gas circulation. A mathematical model of the radiant tube is established and the radiant tube is studied by the method of numerical calculation. On the basis of the model's reliability, the velocity field, temperature field and NOx emission are compared between the radiant tube and a conventional W-shaped radiant tube. The average gas velocity of the new radiant tube is three times that of the conventional radiant tube, and 57.6% flue gas is involved in recombustion in the new radiant tube. The maximum combustion temperature of the new radiant tube is 2260 K, which is 192 K lower than that of the conventional radiant tube. The wall temperature difference of the new radiant tube is 166 K, which is 76 K lower than that of the conventional radiant tube. The NOx emission of the new radiant tube is 9.9×10-5, but the NOx emission of the conventional radiant tube is 7.98×10-4, nearly seven times higher. ©, 2014, University of Science and Technology Beijing. All right reserved. Source


Chen Y.,University of Science and Technology Beijing | Feng J.,University of Science and Technology Beijing | Liu X.,University of Science and Technology Beijing | Wu Q.,CERI Phoenix Industrial Furnace Co.
Jinshu Rechuli/Heat Treatment of Metals | Year: 2016

In order to improve flue gas circulating rate of double P-type radiant tube, effects of nozzle jet velocity, nozzle position, outlet pressure and gas-circulation-tube structures on flue gas circulating were simulated by FLUENT soft. The results show that the flue gas circulating rate increases by about 60% when nozzle jet velocity changes from 75 m/s to 150 m/s. Whereas the nozzle moves from outside (x=-115 mm) to center (x=0 mm), the flue gas circulating rate increases by about 8%. Additionally, the gas-circulation-tubes changed from right-angle-pipe to elbow made the flue gas circulating rate increase by about 2.5%-8%. But the outlet pressure had nothing to do with flue gas circulating rate. © 2016, Chinese Mechanical Engineering Society of Heat Treatment. All right reserved. Source

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