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| 1 | Experimental study on flow characteristics of tetrahydrofuran hydrate slurry in pipelines显示文摘Tetrahydrofuran(THF) was selected as the substitute to study the flow behaviors and the mechanism of the hydrates blockage in pipelines.The slurrylike hydrates and slushlike hydrates are observed with the formation of hydrates in pipeline.There is a critical hydrate volume concentration of 50.6% for THF slurries and pipeline will be free of hydrate blockage while the hydrate volume concentration is lower than the critical volume concentration;otherwise,pipeline will be easy to be blocked.Fully turbulent flow occurs and friction factors tend to be constant when the velocity reaches 1.5 m/s.And then,constant values of friction factors that depend on the volume concentrations in the slurry were regressed to estimate the pressure drops of THF hydrate slurry at large mean velocity.Finally,a safe region,defined according to the critical hydrate volume concentration,was proposed for THF hydrate slurry,which may provide some insight for further studying the natural gas hydrate slurries and judge whether the pipeline can be run safely or not. | Wuchang Wang Shuanshi Fan Deqing Liang Yuxing Li | 2010 | Journal of Natural Gas Chemistry2010，19，3： | 26 |
| 2 | CO_2 capture from binary mixture via forming hydrate with the help of tetra-n-butyl ammonium bromide显示文摘Hydrate formation rate and separation effect on the capture of CO2 from binary mixture via forming hydrate with 5 wt% tetra-n-butyl ammonium bromide (TBAB) solution were studied. The results showed that the induction time was 5 min, and the hydrate formation process finished in 1 h at 4.5 °C and 4.01 MPa. The hydrate formation rate constant reached the maximum of 1.84×10-7 mol2/(s J) with the feed pressure of 7.30 MPa. The CO2 recovery was about 45% in the feed pressure range from 4.30 to 7.30 MPa. Under the feed pressure of 4.30 MPa, the maximum separation factor and CO2 concentration in hydrate phase were 7.3 and 38.2 mol%, respectively. The results demonstrated that TBAB accelerated hydrate formation and enriched CO2 in hydrate phase under the gentle condition. | Shifeng Li Shuanshi Fan Jingqu Wang Xuemei Lang Deqing Liang | 2009 | Journal of Natural Gas Chemistry2009，18，1： | 22 |
| 3 | Reviews of gas hydrate inhibitors in gas-dominant pipelines and application of kinetic hydrate inhibitors in China显示文摘During the development and application of natural gas,hydrate plugging the pipelines is a very important issue to solve.Currently,adding thermodynamic hydrate inhibitors(THIs)and kinetic hydrate inhibitors(KHIs)in gas-dominated pipelines is a main way to prevent hydrate plugging of flow lines.This paper mainly reviews the efforts to develop THIs and KHIs in the past 20 years,compare the role of various THIs,such as methanol,ethylene glycol and electrolyte,and give the tips in using.The direction of KHIs is toward high efficiency,low toxicity,low pollution and low cost.More than a hundred inhibitors,including polymers,natural products and ionic liquids,have been synthesized in the past decade.Some of them have better performance than the current commercial KHIs.However,there are still few problems,such as the complex synthesis process,high cost and low solubility,impeding the commercialization of these inhibitors.The review also summarized some application of KHIs in China.Research of KHIs in China began late.There are no KHIs used in gas pipelines.Only a few field tests have been carried out.In the end of this paper,the field test of self-developed KHIs by China is summarized,and the guidance is given according to the application results. | Yanhong Wang Shuanshi Fan Xuemei Lang | 2019 | Chinese Journal of Chemical Engineering2019，27，9： | 11 |
| 4 | A model for estimating flow assurance of hydrate slurry in pipelines显示文摘The problem of hydrate blockage of pipelines in offshore production is becoming ever-increasing severe because oil fields in ever-increasing unusual environments have been brought in production.HCFC-141b and THF were selected as the substitutes to study the flow assurance of the hydrates in pipelines.There are critical hydrate volume concentrations for these two slurries.Hydrate slurries behave like Bingham fluids and have high agglomerating tendency when the hydrate volume concentrations are larger than the critical ones.Based on rheological behaviors of these two hydrates,a non-dimensional parameter is proposed through studying the driving forces of agglomeration among hydrate particles,which shows the agglomerating probability of hydrate particles in pipeline and can be used to judge the safety of the pipeline.Moreover,a safe model to judge the safely flow hydrate slurries was presented and verified with the experimental data,which demonstrates that the model is effective to judge whether the pipeline can be run safely or not. | Wuchang Wang Shuanshi Fan Deqing Liang Yuxing Li | 2010 | Journal of Natural Gas Chemistry2010，19，4： | 10 |
| 5 | Hydrate capture CO_2 from shifted synthesis gas, flue gas and sour natural gas or biogas显示文摘CO2 capture by hydrate formation is a novel gas separation technology, by which CO2 is selectively engaged in the cages of hydrate and is separated with other gases, based on the differences of phase equilibrium for CO2 and other gases. However, rigorous temperature and pressure, high energy cost and industrialized hydration separator dragged the development of the hydrate based CO2 capture. In this paper, the key problems in CO2 capture from the different sources such as shifted synthesis gas, flue gas and sour natural gas or biogas were analyzed. For shifted synthesis gas and flue gas, its high energy consumption is the barrier, and for the sour natural gas or biogas (CO2/CH4 system), the bottleneck is how to enhance the selectivity of CO2 hydration. For these gases, scale-up is the main difficulty. Also, this paper explored the possibility of separating different gases by selective hydrate formation and reviewed the progress of CO2 separation from shifted synthesis gas, flue gas and sour natural gas or biogas. | Yanhong Wang Xuemei Lang Shuanshi Fan | 2013 | Journal of Energy Chemistry2013，22，1： | 10 |
| 6 | Promoting effect of super absorbent polymer on hydrate formation显示文摘The effect of super absorbent polymer(SAP) on the formation of tetrahydrofuran(THF) hydrate was studied by the successional cooling method.It was found that THF solution samples with 0.004 wt% and 0.03 wt% of SAP formed THF hydrate completely during the same cooling process.The corresponding induction time was 16-29 min,14-31 min,respectively,which was obviously shorter than that of THF solution samples without SAP(25-62 min).It indicated that SAP accelerated the formation of THF hydrate.At the same time,the pictures of hydrate formation with and without SAP had been compared.It was found that SAP did not change the morphology of the hydrate.Finally,the mechanism of SAP promoting effect on the formation of THF hydrate was suggested. | Fei Long Shuanshi Fan Yanhong Wang Xuemei Lang | 2010 | Journal of Natural Gas Chemistry2010，19，3： | 8 |
| 7 | Kinetic hydrate inhibitor performance of new copolymer poly(N-vinyl-2-pyrrolidone-co-2-vinyl pyridine)s with TBAB显示文摘In oil and gas field, the application of kinetic hydrate inhibitors (KHIs) independently has remained problematic in high subcooling and high water-cut situation. One feasible method to resolve this problem is the combined use of KHIs and some synergists, which would enhance KHIs’ inhibitory effect on both hydrate nucleation and hydrate crystal growth. In this study, a novel kind of KHI copolymer poly(N-vinyl-2-pyrrolidone-co-2-vinyl pyridine)s (HGs) is used in conjunction with TBAB to show its high performance on hydrate inhibition. The performance of HGs with different monomer ratios in structure II tetrahydrofuran (THF) hydrate is investigated using kinetic hydrate inhibitor evaluation apparatus by step-cooling method and isothermal cooling method. With the combined gas hydrate inhibitor at the concentration of 1.0 wt%, the induction time of 19 wt% THF solution could be prolonged to 8.5 h at a high subcooling of 6℃. Finally, the mechanism of HGs inhibiting the formation of gas hydrate is proposed. | Jun Hu Sijia Li Yanhong Wang Xuemei Lang Qingping Li Shuanshi Fan | 2012 | Journal of Natural Gas Chemistry2012，21，2： | 8 |
| 8 | Economic Comparison of Three Gas Separation Technologies for CO2 Capture from Power Plant Flue Gas显示文摘Three gas separation technologies,chemical absorption,membrane separation and pressure swing adsorption,are usually applied for CO2 capture from flue gas in coal-fired power plants.In this work,the costs of the three technologies are analyzed and compared.The cost for chemical absorption is mainly from $30 to $60 per ton(based on CO2 avoided),while the minimum value is $10 per ton(based on CO2 avoided).As for membrane separation and pressure swing adsorption,the costs are $50 to $78 and $40 to $63 per ton(based on CO2 avoided),respectively.Measures are proposed to reduce the cost of the three technologies.For CO2 capture and storage process,the CO2 recovery and purity should be greater than 90%.Based on the cost,recovery,and purity,it seems that chemical absorption is currently the most cost-effective technology for CO2 capture from flue gas from power plants.However,membrane gas separation is the most promising alternative approach in the future,provided that membrane performance is further improved. | YANG Hongjun FAN Shuanshi LANG Xuemei WANG Yanhong NIE Jianghua | 2011 | Chinese Journal of Chemical Engineering2011，19，4： | 7 |
| 9 | Use of Electrical Resistance to Detect the Formation and Decomposition of Methane Hydrate显示文摘电的抵抗(R) 的变化同时在 CH4 水合物形成和分解的过程试验性地被学习,用象辅助检测方法的温度和压力。实验结果证明 R 与水合物形成增加并且与水合物 decompositon 减少。R 比温度或压力对水合物形成和 decompositon 更敏感,它显示 R 的察觉将是为检测天然气的一个有效工具水合物(NGH ) 份量上。 | Xitang Zhou Shuanshi Fan Deqing Liang Donglei Wang Ningsheng Huang | 2007 | Journal of Natural Gas Chemistry2007，16，4： | 6 |
| 10 | Influence of 3A molecular sieve on tetrahydrofuran (THF) hydrate formation显示文摘Visual observation of the THF hydrate formation process in the presence of a 3A molecular sieve has been made at normal atmosphere and below a temperature of zero by microscopy. The results indicate that a 3A molecular sieve can induce the nucleation of the THF hydrate and promote the THF hydrate growth. With the existence of a 3A molecular sieve, the growth rate of THF hydrate is between 0.01 and 0.05 μm/s. In comparison with the system without any 3A molecular sieve, the growth rate increases about 4 nm/s. After the THF hydrate grows into megacryst, the crystals will recombine and partially change under the same condition. | ZANG XiaoYa FAN ShuanShi LIANG DeQing LI DongLiang CHEN GuangJin | 2008 | Science China Chemistry2008，51，9： | 6 |
| 11 | Synthesis and application of a novel combined kinetic hydrate inhibitor显示文摘In oil and gas exploration and transportation,low dosage hydrate inhibitors(LDHIs) are more favorably utilized to inhibit the formation of hydrates than thermodynamic inhibitors(THs) as a trend. However,there are no industrial products of LDHIs available domestically,and the corresponding application experience is in urgent need. In this paper,a combined hydrate inhibitor(HY-1) was synthesized after a series of reaction condition optimization,and its performance on THF hydrate inhibition was investigated using kinetic hydrate inhibitor evaluation apparatus with 6 cells bathing in air. The results show that when the reaction temperature is 60°C,the reaction time is 6 h,and the monomer:solvent ratio is 1:2,the product has the best kinetic hydrate inhibitor performance on THF hydrate. On these bases,the scale-up production of this combined hydrate inhibitor was carried out. Although the scale-up product(HY-10) performs less effectively on the THF hydrate inhibition than HY-1,it functions better than a commercial product(Inhibex501) during in-house tests. HY-10 was successfully applied to the gas production process. Field trials in northern Shaanxi PetroChina Changqing Oilfield Company(PCOC) show that 2 wt% of HY-10 is effective on natural gas hydrate inhibition. It is found through economic analysis that the use of HY-10 has obvious economical advantage over methanol and Inhibex501. | HU Jun WANG YanHong LANG XueMei DU Juan LI QingPing FAN ShuanShi | 2011 | Science China(Technological Sciences)2011，54，12： | 6 |
| 12 | Accelerated nucleation of tetrahydrofuran(THF)hydrate in presence of ZIF-61显示文摘Clathrate hydrate can be used in energy gas storage and transportation,CO 2 capture and cool storage etc.However,these technologies are difficult to be used due to the low formation rate and long induction time of hydrate formation.In this paper,ZIF-61(zeolite imidazolate framework,ZIF) was first used in hydrate formation to stimulate hydrate nucleation.As an additive of clathrate hydrate,ZIF-61 promoted obviously the acceleration of tetrahydrofuran(THF) hydrate nucleation.It shortened the induction time of THF hydrate formation from 2-5 h to 0.3-1 h mainly due to the template function of ZIF-61 by which the nucleation of THF hydrate has been promoted. | Yanhong Wang Xuemei Lang Shuanshi Fan | 2012 | Journal of Natural Gas Chemistry2012，21，3： | 5 |
| 13 | Intensification of methane and hydrogen storage inclathrate hydrate and future prospect显示文摘Gas hydrate is a new technology for energy gas(methane/hydrogen)storage due to its large capacity of gas storage and safe.But industrial application of hydrate storage process was hindered by someproblems.For methane,the main problems are low formation rateand storage capacity,which can be solved by strengthening mass andheat transfer,such as adding additives,stirring,bubbling,etc.Onekind of additives can change the equilibrium curve to reduce the formation pressure of methane hydrate,and the other kind of additivesis surfactant,which can form micelle with water and increase the interface of water-gas.Dry water has the similar effects on the methanehydrate as surfactant.Additionally,stirring,bubbling,and sprayingcan increase formation rate and storage capacity due to mass transferstrengthened.Inserting internal or external heat exchange also canimprove formation rate because of good heat transfer.For hydrogen,the main difficulties are very high pressure for hydrate formed.Tetrahydrofuran(THF),tetrabutylammonium bromide(TBAB) andtetrabutylammonium fluoride(TBAF) have been proved to be able todecrease the hydrogen hydrate formation pressure significantly. | Xuemei Lang Shuanshi Fan YanhongWang | 2010 | Journal of Natural Gas Chemistry2010，19，3： | 5 |
| 14 | THERMAL CONDUCTIVITY OF THF CLATHRATE HYDRATE FROM 243 K TO 263 K显示文摘Using transient plane source technique, we measured THF hydrate thermal conductivity from 243 K to 263 K. The sample THF solution is over saturated in order to avoid the effect of ice. And also to avoid the effect of crystal anisotropy, the THF hydrate was crushed to measure. In the test temperature value increases with the temperature increasing. | HUANG Duzi~(1,2) and FAN Shuanshi~1(~1Center for Gas Hydrate, Guangzhou Institute of Energy Conversion, CAS, Guangzhou, 510070, Guangdong, China ~2 Department of Thermal Science & Energy Engineering, USTC, Hefei, 230036, Anhui, China) | 2003 | 化工学报2003，54，z1： | 5 |
| 15 | Recovering methane from quartz sand-bearing hydrate with gaseous CO2显示文摘The replacement method by CO_2 is regarded as a new approach to natural gas hydrate(NGH) exploitation method, by which methane production and carbon dioxide sequestration might be obtained simultaneously. In this study, CO_2 was used to recover CH_4 from hydrate reservoirs at different temperatures and pressures. During the CO_2–CH_4 recovery process, the pressure was selected from 2.1 to 3.4 MPa, and the temperature ranged from 274.2 to 281.2 K. Calculating the fugacity differences between the gas phase and the hydrate phase for CO_2 and CH_4 at different conditions, it has found rising pressure was positive for hydrates formation process that was helpful for the improvement of CH_4 recovery rate. Rising temperature promoted the trend of CH_4 hydrate decomposition for the whole process of CO_2–CH_4replacement.The highest recovery rate was 46.6 % at 3.4 MPa 281.2 K for CO_2–CH_4replacement reaction in this work. | Shuanshi Fan Xi Wang Yanhong Wang Xuemei Lang | 2017 | Journal of Energy Chemistry2017，26，4： | 4 |
| 16 | Optimization strategy and procedure for coal bed methane separation显示文摘Coal bed methane(CBM) has a huge potential to be purified to relieve the shortage of natural gas meanwhile to weaken the greenhouse effect.This paper proposed an optimal design strategy for CBM to obtain an integrated process configuration consisting of three each single separation units,membrane,pressure swing absorption,and cryogenics.A superstructure model was established including all possible network configurations which were solved by MINLP.The design strategy optimized the separation unit configuration and operating conditions to satisfy the target of minimum total annual process cost.An example was presented for the separation of CH4/N2 mixtures in coal bed methane (CBM) treatment.The key operation parameters were also studied and they showed the influence to process configurations. | Gaobo Zhang Shuanshi Fan Ben Hua Yanhong Wang Tianxu Huang Yuhang Xie | 2013 | Journal of Energy Chemistry2013，22，3： | 3 |
| 17 | EFFECT OF DIFFERENT OPERATION METHODS ON METHANE HYDRATE FORMATION显示文摘Three experiments of static state storage method, low-temperature and constant-pressure storage method and low-temperature and constant-pressure storage method were carried out to investigate which method was best in gas hydrate. The relationships of hydrate rate, capacity and liquid temperature versus time were derived and three results were contrasted. The experimental results show lowtemperature and constant-pressure method is better than the other two methods because it's operation period is shorter and storage capacity is larger than the other two. Low-temperature and constant-pressure method is the best method. So new method will be new research objective. | HAO Wenfeng~(1,2), FAN Shuanshi~2 and WANG Jinqu~1 (~1 Institute of Adsorption and Inorganic Membrane, Dalian University of Technology, Dalian 116012, Liaoning, China ~2 Guangzhou Institute of Energy Canversion, The Chinese Academy of Sciences, Guangzhou 510070, Guangdong, China) | 2003 | 化工学报2003，54，z1： | 3 |
| 18 | Experimental investigation of methane hydrate decomposition by depressurizing in porous media with 3-Dimension device显示文摘In order to simulate the behavior of gas hydrate formation and decomposition,a 3-Dimension experimental device was built,consisting of a high-pressure reactor with an inner diameter of 300 mm,effective height of 100 mm,and operation pressure of 16 MPa.Eight thermal resistances were mounted in the porous media at different depthes and radiuses to detect the temperature distribution during the hydrate formation/decomposition.To collect the pressure,temperature,and flux of gas production data,the Monitor and Control Generated System(MCGS) was used.Using this device,the formation and decomposition behavior of methane hydrate in the 20 ~ 40 mesh natural sand with salinity of 3.35 wt% was examined.It was found that the front of formation or decomposition of hydrate can be judged by the temperature distribution.The amount of hydrate formation can also be evaluated by the temperature change.During the hydrate decomposition process,the temperature curves indicated that the hydrate in the top and bottom of reactor dissociated earlier than in the inner.The hydrate decomposition front gradually moved from porous media surface to inner and kept a shape of column form,with different moving speed at different surface position.The proper decomposition pressure was also determined. | Kehua Su Changyu Sun Xin Yang Guangjin Chen Shuanshi Fan | 2010 | Journal of Natural Gas Chemistry2010，19，3： | 3 |
| 19 | EFFECT OF MAGNETIZATION OF WATER ON INDUCTION TIME AND GROWTH PERIOD OF NATURAL GAS HYDRATE显示文摘The effect of diluted solution's magnetization on induction time and growth period of natural gas hydrate (NGH) has been investigated in quiescent reaction system at pressure of 4. 5 MPa and temperature of 274 K with SDS as surfactant, by using volume fixed and pressure falling method. Experimental results show that magnetization will have effect on the induction time of NGH. After magnetization with magnetic field intensity of 0.33 T, the induction time of NGH has been reduced to 47 min (average) from 99 min (average) in which there is no magnetization. On the other hand, the induction time has been prolonged after magnetization of the diluted solution with magnetic field intensity of 0.05 T, 0. 11 T, 0.22 T, 0.44T. Especially with magnetic field intensity of 0.11 T, the induction time had even been prolonged to 431min (average). The effect of magnetization on the growth period of NGH has not been found at the experimental condition. | KUANG Li and FAN Shuanshi(Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510070, Guangdong, China) | 2003 | 化工学报2003，54，z1： | 3 |
| 20 | INFLUENCE OF CHEMICAL ADDITIVES ON GAS HYDRATE FORMATION显示文摘One surfactant as sodium dodecyl sulfate (SDS) and one synthesized sample as gas hydrate inhibitor are introduced in this paper. Through experiments we prove sodium dodecyl sulfate can accelerate the formation rate of gas hydrate and the synthesized sample can inhibit the formation and growth. | TANG Cuiping and FAN Shuanshi (Center for Gas Hydrate Research, Guangzhou Institute of Energy Conversion, Chinese Academy of Science, Guangzhou 510070, Guangdong, China) | 2003 | 化工学报2003，54，z1： | 2 |
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