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| 1 | 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 |
| 2 | 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 |
| 3 | 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 |
| 4 | 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 |
| 5 | 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 |
| 6 | 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 |
| 7 | 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 |
| 8 | 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 |
| 9 | 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 |
| 10 | 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 |
| 11 | The Crosstalk of mTOR/S6K1 and Hedgehog Pathways显示文摘 | Yan Wang Qingqing Ding Chia-Jui Yen Weiya Xia Julie G. Izzo Jing-Yu Lang Chia-Wei Li Jennifer L. Hsu Stephanie A. Miller Xuemei Wang Dung-Fang Lee Jung-Mao Hsu Longfei Huo Adam M. LaBaff Dongping Liu Tzu-Hsuan Huang Chien-Chen Lai Fuu-Jen Tsai Wei-Chao Ch | 2012 | Cancer Cell2012，，3： | 2 |
| 12 | Preparation and characterization of copolymerized aminopropyl/phenylsilsesquioxane microparticles显示文摘 | Liu Shumei Lang Xuemei Ye Hua | 2005 | Eur Polym J2005，41，5： | 1 |
| 13 | The role of an- thraquinone sulfonate dopants in promoting performance of poly- pyrrole composites as pseudo-capacitive electrode materials 显示文摘 | Lang Xuemei Wan Qunyi Feng chunhua | 2010 | Synthetic Metals2010，160，： | 1 |
| 14 | Kinetics and ther- mal analysis of methane hydrate formation in aluminum foam 显示文摘 | Fan Shuanshi Yang Liang Lang Xuemei | 2012 | Chemical Engineering Science2012，82，： | 1 |
| 15 | Seismic behavior of reinforced concrete column-steel beam subassemblies and frame systems 显示文摘 | Lang Xuemei Parra-Montesinos | 2004 | Journal of Structural Engineering2004，130，2： | 1 |
| 16 | Kinetics and thermal analysis of methane hydrate formation in aluminum foam显示文摘 | Shuanshi Fan Liang Yang Xuemei Lang Yanhong Wang Donglai Xie | 2012 | Chemical Engineering Science2012，，： | 1 |
| 17 | Rapid dissociation and on-site saturation evaluation of methane hydrate sediment samples for natural gas hydrate exploitation显示文摘Natural gas hydrate is a kind of clean energy with huge reserves,and the saturation(volume percentage of hydrate in pore space of sediments)is the key parameter for determining whether the reservoir is worthy of exploitation.In this work,rapid hydrate dissociation by the combination of heat injection and NaCl inhibitor addition was studied,and an on-site evaluation method for hydrate saturation in sediment samples was proposed by using a core sampler to transfer hydrate samples under pressure.The results showed that the average gas production rate per unit volume was increased significantly to reach 7.22 L/Lr$min-1 by the injection of NaCl aqueous solution with 50.9C,which was attributed to the increase of the chemical potential to further accelerate the rate of hydrate dissociation in the presence of NaCl.Furthermore,for the measurement of methane hydrate samples saturation with a volume of 673 cm3(which contained 1.4 mol hydrates with the saturation of 58%),hydrate saturation could be accurately achieved within 30 min with a relative error lower than 11.7%This work may provide new thoughts for on-site saturation evaluation and rapid dissociation of hydrate samples during natural gas hydrate exploitation. | Shuanshi Fan Kai Guo Yanhong Wang Xuemei Lang Na Wei Qingping Li | 2021 | Petroleum2021，7，4： | 1 |
| 18 | Seismic behavior of reinforced concrete column-steel beam subassemblies and frame systems 显示文摘 | Lang Xuemei Parra-Montesinos | 2004 | Journal of Structural Engineering2004，150，2： | 1 |
| 19 | ZokorDB: tissue specific regulatory network annotation for non-coding elements of plateau zokor显示文摘Background:Plateau zokor inhabits in sealed burrows from 2,000 to 4,200 meters at Qinghai-Tibet Plateau.This extreme living env ironment makes it a great model to study animal adaptation to hypoxia,low temperature,and high carbon dioxide concentration.Methods:We provide an integrated resource,ZokorDB,for tissue specific regulatory network annotation for zokor.ZokorDB is based on a high-quality draft genome of a plateau zokor at 3,300 m and its transcriptional profiles in brain,heart,liver,kidney,and lung.The conserved non-coding elements of zokor are annotated by their nearest genes and upstream transcriptional factor motif binding sites.Results:ZokorDB provides a general draft gene regulatory network(GRN),Le?potential transcription factor(TF)binds to non-coding regulatory elements and regulates the expression of target genes(TG).Furthermore,we refined the GRN by incorporating matched RNA-seq and DNase-seq data from mouse ENCODE project and reconstructed five tissue-specific regulatory networks.Conclusions:A web-based,open-access database is developed for easily searching,visualizing,and downloading the annotation and data.The pipeline of non-coding region annotation for zokor will be useful for other non-model species.ZokorDB is free available at the website(bigd.big.ac.cn/zokordb/). | Jingxue Xin Junjun Hao Lang Chen Tao Zhang Lei Li Luonan Chen Wenmin Zhao Xuemei Lu Peng Shi Yong Wang | 2020 | Quantitative Biology2020，8，1： | 0 |
| 20 | Evidence for pore-filling gas hydrates in the sediments through morphology observation显示文摘To provide an evidence of natural gas hydrate occurrence state,a series of experiments on multiple growth and dissociation of 90.0%methane/10.0%propane hydrates at 1.3 MPa and 270.15 K were carried out in two sediments for morphology observation via a visible jacketed-reactor.The gas hydrate crystals were observed to form and grow on the surface of sediments at the initial growth.During the thermal decomposition,gas and liquid products had an unceasingly impact on the sediments,then gas/liquid–solid migration occurred,and a large number of cavitation appeared.In the later growth and dissociation experiments,the gas hydrate particles were in suspension or supporting states in the interstitial pore space between the sediment particles,indicating that the gas hydrate displayed a pore-filling characteristics.Through analyzing the distribution of gas hydrates and bubbles,it was found that the amount of gas hydrates distributed in the sediments was improved with multiple growth-dissociation cycle proceedings.Gas migration enhanced the sediment movement,which led to the appearance of the increasing quantity of gas bubbles in the sediments during cycles.Salts affected the growth of the gas hydrates and the migration of sediment grains,which also restricted the accumulation of gas bubbles in the sediments.According to the Raman analysis,the results showed that sII hydrates were formed for CH4 and C3H8 gas mixtures in different sediments and solutions with hydration number of 5.84–6.53.The Salt restricted the access of gas into the hydrate cages. | Wenxiang Zhang Shuanshi Fan Yanhong Wang Xuemei Lang Kai Guo Jianbiao Chen | 2019 | Chinese Journal of Chemical Engineering2019，27，9： | 0 |
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