The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Li Xin-gong - One of the best experts on this subject based on the ideXlab platform.
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Research Progress of Steam-Injection Pressing Technology for Wood-based Boards
Forestry Machinery and Woodworking Equipment, 2010Co-Authors: Li Xin-gongAbstract:Steam-Injection pressing technology for wood-based boards is a kind of new hot-pressing technology researched and developed in recent years and its hot-pressing performance is noticeably superior to ordinary hot-pressing technology.The technical principle,methods and research progress of Steam-Injection pressing technology are introduced and some opinions on the future research focus are presented.
Xia Zheng - One of the best experts on this subject based on the ideXlab platform.
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Steam-Injection Pressing Technology of Man-Made Board
Key Engineering Materials, 2011Co-Authors: Xia ZhengAbstract:Steam-Injection pressing technology is a kind of new hot-pressing technology researched and developed in recent years, its hot-pressing performance significantly better than traditional hot-pressing. The technical principle, method and research progress of Steam-Injection pressing technology was reviewed in detail and its future research trend is also outlined.
Ding Hou-don - One of the best experts on this subject based on the ideXlab platform.
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Development and Application of 26 MPa Supercritical Pressure Steam- Injection Boiler in Oil Field
Industrial Boiler, 2014Co-Authors: Ding Hou-donAbstract:Mainly elaborates the recent status of Steam-Injection boiler widely used for exploiting heavy oil and the recognized necessity of developing supercritical pressure Steam-Injection boiler.On the basis of the thoeries of thermodynamics and hydrodynamics,the optimized process parameters and evaluation indexes for supercritical pressure Steam-Injection boiler are explored,some problems such as the flow pulsation,heat transfer deterioration and salt deposition in the tubes of radiation section are analysed,the application result of a new supercritical pressure Steam-Injection boiler is also showed.
Xiu Xing Zhu - One of the best experts on this subject based on the ideXlab platform.
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Thermodynamic Model of Steam Injection Pipeline Considering the Effect of Time and Phase Change
Journal of Power of Technologies, 2019Co-Authors: Xuan Zhao, Chengcheng Niu, Jun Wang, Xiu Xing ZhuAbstract:Thermodynamic parameters in heavy oil thermal recovery wells form the basis for evaluating the thermal efficiency of Steam Injection. However, various factors in wellbores affect the variation law of thermodynamic parameters, hindering attempts to make an accurate description of them. A thermodynamic model of wellbores is proposed in this study which factors in the effects of time and phase change with a view to: (i) improving the accuracy of thermodynamic parameter analysis, and (ii) identifying the main factors and rules that govern thermal efficiency. With the time factor considered, the transient conduction function of a coupled wellbore-formation was established, and the heat loss during Steam Injection was analyzed. Meanwhile, a wellbore pressure gradient equation was established using the Beggs-Brill model with consideration of the influence of phase transformation in wellbore. Steam pressure, which varies with flow pattern, was also analyzed. The accuracy of the proposed model was verified by comparing the results of the analysis with the test data. Taking this approach, the influence of Steam Injection parameters on thermal efficiency was studied. The results demonstrate that the relative error of the pressure analysis result of proposed model is 1.06% and the relative error of temperature is 0.24%. The main factor affecting thermal efficiency is water in the annulus of the wellbore, followed by the Steam Injection rate. The thermal efficiency of the wellbore is about 80% when the water depth in the annulus is 300 m. An increase in the Injection rate or extension of the Injection time can improve thermal efficiency, whereas an increase in Steam Injection pressure reduces thermal efficiency. The proposed method provides good prospects for optimizing high efficiency Steam Injection parameters of heavy oil thermal recovery wells.
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A New Method of Improving Steam Injection Profile Distribution Used in Thermal Horizontal Well and Experimental Study
Advanced Materials Research, 2012Co-Authors: Xiu Xing Zhu, Shi Feng Xue, Xing Hua TongAbstract:During the production of thermal horizontal well, recovery ratio will be reduced by the deficiency of traditional Steam Injection methods, which include finite effective heating range, poor level of producing reserves etc. In order to improve efficiency of Steam and well yield，a new method—multipoint Steam Injection technology is presented in this paper, which can improve Steam Injection profile distribution in thermal horizontal wells. Several factors including multiphase flow, pressure drop, variable mass flow and reservoir heterogeneity, are taken into consideration in this method. By the new technology, Steam Injection string used in horizontal wells is divided into several independent units through applying matching equipments. Based on the optimization of Steam absorption capacity of every unit, Steam Injection profile distribution is improved. The validation of multipoint Steam Injection technology and matching equipments are verified through ground simulation tests in this paper. Moreover, the influence of Steam Injection parameters is also analyzed.
Bambang Subiyanto - One of the best experts on this subject based on the ideXlab platform.
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Steam-Injection Pressing Technology
Recent Research on Wood and Wood-Based Materials, 2013Co-Authors: Hikaru Sasaki, Shuichi Kawai, Toshimitsu Hata, Bambang SubiyantoAbstract:ABSTRACT In order to establish the optimum Steam-Injection pressing technology, the characteristics of curing adhesives under high Steam pressure, the temperature behavior in the particle mat core during Steam-Injection pressing, and the length of pressing time were investigated. A semi-continuous Steam-Injection press of test-plant scale was then developed and applied to the production of thick, low-density particleboard. The duration and pressure of Steam Injection with urea formaldehyde (UF) and urea-melamine formaldehyde (UMF) adhesives needed to be carefully determined for particleboard production by high-temperature Steam-Injection pressing, too-high Steam temperatures resulting in a poor internal bond strength. On the other hand, the internal bond strength of those boards bonded with other resins was not perceptibly influenced by the Steam temperature. The temperature in the middle layer of a particle mat with a thickness of 20 or 40 mm reached more than 100°C at the moment of Steam Injection, whereas it takes 4 and 11 minutes, respectively, in the case of hot pressing. The computer simulation predicts that only a few seconds of Steam Injection is required for a mat thickness within 100 mm to reach 100°C in the mat core. Isocyanate bonded particleboards with a thickness of 20 mm could be produced with a press time of around one minute. This corresponds to only about one-fifth of the press time of a conventional hot-platen press, and this effect of Steam-Injection pressing on shortening the press time would be greater for thicker board production. The newly developed semi-continuous, Steam-Injection press worked satisfactorily, and 100 mm thick low-density particleboards bonded with an isocyanate resin could be manufactured with a 90-second press cycle.
