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Modeling and analysis of air combustion and steam regeneration in methanol to olefins processes

Chinese Journal of Chemical Engineering 2024年第2期66卷 94-103页

作者： jinqiang liang Danzhu Liu Shuliang Xu Mao Ye Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116021China University of Chinese Academy of Sciences Beijing 100049China

Light olefins is the incredibly important materials in chemical *** to olefins(MTO),which provides a non-oil route for light olefins production,received considerable attention in the past ***,the catalyst deactivation is an inevitable feature in MTO processes,and regeneration,therefore,is one of the key steps in industrial MTO *** the MTO catalyst is regenerated by removing the deposited coke via air combustion,which unavoidably transforms coke into carbon dioxide and reduces the carbon utilization *** study shows that the coke species over MTO catalyst can be regenerated via steam,which can promote the light olefins yield as the deactivated coke species can be essentially transferred to industrially useful synthesis gas,is a promising pathway for further MTO processes *** this work,we modelled and analyzed these two MTO regeneration methods in terms of carbon utilization efficiency and technology *** shown,the steam regeneration could achieve a carbon utilization efficiency of 84.31%,compared to 74.74%for air combustion *** MTO processes using steam regeneration can essentially achieve the near-zero carbon *** addition,light olefins production of the MTO processes using steam regeneration is 12.81%higher than that using air combustion *** this regard,steam regeneration could be considered as a potential yet promising regeneration method for further MTO processes,showing not only great environmental benefits but also competitive economic performance.

关键词： Model Methanol to olefins Regeneration Greenhouse gas Processes simulation

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琼东南盆地块体搬运体系沉积特征及其对下伏水合物藏的影响

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地质学报 2024年第9期98卷 2592-2606页

作者：孟苗苗阎少妮梁金强孙启良匡增桂任金锋余晗中国地质调查局天然气水合物工程技术中心广东广州511458 中国地质调查局广州海洋地质调查局广东广州511458 中国地质大学(武汉)海洋学院湖北武汉430074

块体搬运沉积(mass transport deposits,MTDs)作为深水沉积体系的重要组成在资源勘探和地质灾害等方面具有重要意义。琼东南盆地深水区水合物钻探发现水合物层之上发育三套MTDs,目前对其沉积特征以及控制因素等研究不足,进而限制了其对... 详细信息

块体搬运沉积(mass transport deposits,MTDs)作为深水沉积体系的重要组成在资源勘探和地质灾害等方面具有重要意义。琼东南盆地深水区水合物钻探发现水合物层之上发育三套MTDs,目前对其沉积特征以及控制因素等研究不足,进而限制了其对下伏水合物藏影响的认识。本研究以紧邻水合物层的第三套块体搬运沉积(MTD3)为重点研究对象,综合利用2D/3D地震数据、测井及岩芯资料对MTD3的沉积特征进行研究,并探讨了MTD3的物质来源、控制因素以及对下伏水合物藏的影响。研究表明,MTD3的岩性主要为具有明显的变形特征的泥质沉积,在测井上表现为低伽马值和低电阻率以及不规则成像特征,在地震剖面上表现为与顶底连续性较好的强振幅反射有明显的差别低幅杂乱或空白反射;MTD3在琼东南盆地发育体部滑移区和趾部挤压区,未见头部拉张区,平面上呈条带状展布,面积约3600 km2。MTD3的沉积物质可能来源于琼东南盆地西北部陆坡,然后沿中央坳陷带自SW向NE运移。MTD3的发育受海底地形地貌、构造和地震活动、沉积速率以及海平面变化等因素的综合控制。位于趾部挤压区的MTD3与半远洋沉积共同构成下伏水合物的盖层,其致密岩性以及浅层超压共同促使水合物的富集成藏。本研究加深了对琼东南盆地第四纪浅层事件性沉积的认识,并为与块体搬运沉积相关的水合物资源预测提供地质理论指导。

关键词：块体搬运沉积沉积相天然气水合物琼东南盆地

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Modeling and analysis of air combustion and steam regeneration in methanol to olefi ns processes

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中国化学工程学报（英文版） 2024年第2期 94页

作者： jinqiang liang Danzhu Liu Shuliang Xu Mao Ye

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南海北部神狐海域细粒储层矿物组分对天然气水合物储集赋存的影响

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地质论评 2024年第3期70卷 1205-1220页

作者：徐小蕾白辰阳苏丕波马倩张宇梁金强中国地质大学(北京)海洋学院北京100083 极地地质与海洋矿产教育部重点实验室(中国地质大学)(北京) 北京100083 广州海洋地质调查局三亚南海地质研究所海南三亚572000 中国地质调查局天然气水合物工程技术中心北京100037 自然资源部海底矿产资源重点实验室中国地质调查局广州海洋地质调查局广州510075 中国石油集团长庆油田分公司第一采气厂陕西靖边718500

为了探明矿物类型对于天然气水合物成藏的影响,笔者等利用南海北部神狐海域W07站位样品及其水合物饱和度数据,进行XRD全岩和黏土矿物测试分析、比表面积分析以及束缚水能力综合分析。结果表明,海床下110~127 m(即110~127 mbsf,meters be... 详细信息

为了探明矿物类型对于天然气水合物成藏的影响,笔者等利用南海北部神狐海域W07站位样品及其水合物饱和度数据,进行XRD全岩和黏土矿物测试分析、比表面积分析以及束缚水能力综合分析。结果表明,海床下110~127 m(即110~127 mbsf,meters below sea floor,海床以下深度)为非水合物储层段,海床下127~156 m为水合物储层段。通过XRD分析可知,高石英及长石含量,低伊蒙混层含量的层段,比表面积与束缚水能力较低,说明其具有相对较好的孔渗条件,为水合物的运移与储集提供了良好的空间条件,因此形成水合物储层段;而在高伊蒙混层的层段中,比表面积较大,束缚水能力较强,其对甲烷气体及流体的吸附和束缚能力较强,对水合物成藏起到潜在的封隔作用,成为非储层段,储层与非储层段纵向叠置序列有利于优质水合物储层的形成。本次研究总结了矿物组分与优质水合物储层之间的关系,并揭示两者存在的潜在成因联系,以期丰富水合物富集成藏的基础理论,对未来南海北部天然气水合物的商业化开发提供支持。

关键词：南海北部神狐海域 GMGS4 天然气水合物黏土矿物

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Geomorphological-geological-geophysical signatures of high-flux fluid flows in the eastern Pearl River Mouth Basin and effects on gas hydrate accumulation

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Science China Earth Sciences 2018年第7期61卷 914-924页

作者： Zenggui KUANG Yunxin FANG jinqiang liang Jing'an LU Lei WANG Key Laboratory of Marine Mineral Resources Ministry of Land and ResourcesGuangzhou Marine Geological Survey New Energy Project Department China National Petroleum Corporation Offshore Engineering Company Limited

Marine hydrate reservoirs can be divided into focused high-flux and distributed low-flux gas hydrate systems according to free gas migration control mechanisms. In focused high-flux hydrate reservoirs, fluids easily break through the pressure of overlying sediments and reach the shallows, creating a series of geomorphological-geological-geophysical anomalies at and near the seafloor. Based on detailed interpretation of pre-drilling data in the eastern Pearl River Mouth Basin(PRMB),many anomalies related to the high-flux fluid flow are found, including seafloor mounds with intrusive characteristics, bright spot reflections above the bottom-stimulating reflector(BSR), phase reversals in the superficial layer, and an efficient fluid migration and accumulation system composed of fractures and uplifts. The second hydrate drilling expedition was carried out in the eastern PRMB in 2013 to study these anomalies. The acquired data show that high-flux fluid flow occurred in these sites. Gas hydrate pingoes, bright spot reflection above the BSR, and an efficient fluid migration and accumulation system can be used as identification signatures for high-flux fluid migration. The modes of high flux fluid flow are different in deep and shallow sediments during upward migration of fluid. Gas dissolved within migrating water dominates deep fluid migration and upward migration of a separate gas phase dominates the shallow process. This difference in migration models leads to formation of upper and lower concentrated hydrate reservoirs in the drilling area. The discovery of signatures of high-flux fluid flow and their migration modes will help with site selection and reduce risk in gas hydrate drilling.

关键词： Eastern Pearl River Mouth Basin Gas hydrate High-flux fluid flow Geomorphological-geological-geophysicalsignatures

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基于生物信息学对非酒精性脂肪性肝病肝纤维化进展关键基因的挖掘与分析

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中国医药导报 2024年第13期21卷 29-33页

作者：梁金强任松花欣西安交通大学第二附属医院干部病房普通外科陕西西安710004 西安市人民医院西安市第四医院医学影像中心陕西西安710004

目的基于生物信息学分析对非酒精性脂肪性肝病(NAFLD)肝纤维化进展关键基因及潜在致病机制进行挖掘。方法从GEO数据库获取数据集GSE49541,limma包筛选出差异表达基因(DEGs)后对其进行基因本体(GO)功能注释及京都基因与基因组百科全书(... 详细信息

目的基于生物信息学分析对非酒精性脂肪性肝病(NAFLD)肝纤维化进展关键基因及潜在致病机制进行挖掘。方法从GEO数据库获取数据集GSE49541,limma包筛选出差异表达基因(DEGs)后对其进行基因本体(GO)功能注释及京都基因与基因组百科全书(KEGG)通路分析。STRING数据库对DEGs构建蛋白质-蛋白质相互作用网络,并用Cytoscape筛选关键基因,利用Gene MANIA分析关键基因的共表达网络和功能,最后基于药物特征数据库对关键基因进行药物预测。结果进展期NAFLD与轻度NAFLD比较后,DEGs有65个,表达上调的基因58个,表达下调的基因7个。GO功能分析强调了65个DEGs的分子功能集中在细胞外基质结构成分,KEGG通路分析显示,DEGs主要与细胞外基质受体相互反应等通路有关。Cytoscape筛选出的10个关键基因为COL1A1、COL3A1、COL4A1、COL1A2、COL14A1、FBN1、LUM、THBS1、THBS2、SPP1。Gene MANIA提示关键基因之间存在高度的共表达-互作网络,与细胞外基质结构成分等功能相关。最后,药物预测分析发现,维甲酸和黄体酮是富集到最多关键基因的药物。结论 NAFLD纤维化进展相关的10个关键基因可能成为其生物监测标志物并为分子靶向治疗提供线索。

关键词：非酒精性脂肪性肝病肝纤维化关键基因生物信息学

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Mg/Ca,Ba/Ca,and S/Ca ratios as environmental and growth proxies for bivalve shells from the Haima cold seep,South China Sea

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Journal of Oceanology and Limnology 2023年第2期41卷 660-672页

作者： Jingya CAO Shengxiong YANG Danling TANG Junxi FENG jinqiang liang Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Department of Ocean Science Hong Kong University of Science&TechnologyHong Kong 999077China MLR Key Laboratory of Marine Mineral Resources Guangzhou Marine Geological SurveyChina Geological SurveyMinistry of Natural ResourcesGuangzhou 511458China

Bivalve shell fossils,cemented by authigenic carbonates,are widely spread in the Haima cold seep,Qiongdongnan Basin of the South China Sea(SCS).In this study,we examined an element profile of Gigantidas platifrons in the Haima cold seeps at a water depth of 1381 *** on the scanning electron microscope(SEM)analyses,the prismatic layer and nacreous layer were identified,which are characterized by prismatic structure and stratified structure,*** addition,the profile can be subdivided into two parts:altered and unaltered *** inductively coupled plasma mass spectrometry(LA-ICP-MS)mapping shows that the element concentrations of the altered zones were influenced by the authigenic carbonate rocks,whereas the element concentrations of unaltered zones remain ***-situ X-ray diffraction(XRD)analyses show that the mineral constituent of the prismatic layer is mainly composed of *** with the growth profile,Mg/Ca ratios of unaltered zones have minor variations,ranging 0.72-0.97 mmol/mol(mean=0.87 mmol/mol),with estimated temperatures of 3.8-4.1℃,indicating that the temperature of the surrounding seawater remains constant and agree with the measured data of 3.9℃which was conducted by a conductivity-temperature-depth system(CTD).The minor variations of Ba/Ca ratios(0.01-0.06 mmol/mol;mean=0.04 mmol/mol)indicate a relatively stabilized salinity of the surrounding seawater.S/Ca ratios show large variations of 0.04-4.15 mmol/mol(mean=1.37 mmol/mol).S/Ca ratios have regular variations which generally correspond to the variations of the Mg/Ca ratios,highlighting that the S/Ca ratios of bivalve shells show the potential to reflect the growth rate of the ***,further studies should be carried out on the understanding of the links between the S/Ca ratios and seepage intensity of cold-seep fluids.

关键词： Mg/Ca,Ba/Ca,and S/Ca ratios laser inductively coupled plasma mass spectrometry(LA-ICPMS) Gigantidas platifrons Haima cold seep South China Sea

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Classification of mass-transport complexes and distribution of gashydrate-bearing sediments in the northeastern continental slope of the South China Sea

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Frontiers of Earth Science 2020年第1期14卷 25-36页

作者： Chao FU Xinghe YU Xue FAN Yulin HE jinqiang liang Shunli LI School of Energy Resources China University of GeosciencesBeijing 100083China Zhongyuan Gas Storage Company Limited SINOPECPuyang 400083China Guangzhou Marine Geological Survey Ministry of Land and Nature ResourceGuangzhou 510760China

The drilling areas in Shenhu and Dongsha,South China Sea,studied from 2007 to 2015,reveal great heterogeneity in the spatial distribution of the gas hydrate *** types of mass-transport complexes(MTCs)were developed in the study areas,which served as ideal *** conduct exploration in these areas,it is necessary to study the different types of MTCs and the corresponding gashydrate *** integrating seismic reflection and log coring data,we classified three types of MTCs according to their stress distribution:the tension,extrusion,and shear types,and their corresponding gashydrate accumulation *** results show that the accumulation of the gas-hydrate varies with the type of MTC and stress distribution depending on the MTC’s position(e.g.,in the headwall,translational,or toe areas).Owing to this variance of the MTC’s position,the corresponding kinemics situation in the MTCs also ***,we determined the corresponding location in which the gashydrate develops for various types of *** on the bottom simulating reflectors(BSRs)and the hydrate core and image logging data,the gashydrate reservoir shows an obvious heterogeneity in various types of *** gashydrate in the tension-type MTCs are mostly borne in the toe and the headwall *** extrusion-type MTCs,the translational and toe parts constitute an ideal hydrate *** shear-type MTCs,the headwall and toe parts’coarse-grained sediments show an obviously hydrate *** comparing the gashydrate saturation and MTCs morphology statics data,we were able to quantitatively prove that the main factors determining gashydrate accumulation in the different types of MTCs are the fault displacement,sedimentary rate,and flow erosion rate.

关键词： gas hydrate accumulation pattern masstransport complexes(MTCs) stress distribution South China Sea

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Sedimentary characteristics comparison and genesis analysis of the deepwater channel in the hydrate enrichment zones on the north slope of the South China Sea

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Acta Oceanologica Sinica 2019年第3期38卷 103-113页

作者： Chao Fu Xinghe Yu Yiis Dong Yulin He jinqiang liang Zenggui Kuang School of Energy Resources China University of Geosciences Institute of Geology and Geophysics Chinese Academy of Sciences Guangzhou Marine Geological Survey Ministry of Land and Nature Resource

Natural gas hydrate(NGH) is one of the important clean energy at present and even in the future. The study of its sedimentary environment and minerogenetic condition has long been a hot issue that has received much concern from geologists all over the world. China has successfully obtained the samples of NGH in Shenhu and Dongsha sea areas in 2007, 2013 and 2015, respectively. From this, the continental slope north of the South China Sea becomes an important test site for the study of NGH sedimentary genesis and minerogenetic condition. NGH has been found in Shenhu, Dongsha and Qiongdongnan areas within the continental slope north of South China Sea,at different depths of water, with different sedimentary characteristics, gas genesis, and minerogenetic *** a seismic sedimentology theory, combining seismic facies results of each facies, sedimentary facies and evolution of each area are documented in turn establishing a sedimentary model by considering palaeogeomorphology, sea level change and tectonic movement. The channel system and MTD(Mass Transport Deposition) system among these three areas were compared focusing on the developing position, appearance and controlling factors. Relative location among three areas is firstly defined that Dongsha area in a nearprovenance steep upper slope, Shenhu area in a normal gentle slope and Qiongdongnan area in an awayprovenance flat plain. Besides, their channel systems are classified into erosional, erosional-aggradational and aggradational channel, and MTD systems into headwall domain, translational domain and toe domain.

关键词： sedimentary characteristics deep-sea channel genesis comparison hydrate enrichment zones

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Controlling factors for gas hydrate occurrence in Shenhu area on the northern slope of the South China Sea

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Science China Earth Sciences 2013年第4期56卷 513-520页

作者： WANG HongBin YANG ShengXiong WU NengYou ZHANG GuangXue liang jinqiang CHEN DuoFu Key Laboratory of Marine Mineral Resources of Ministry of Land and Resources Guangzhou Marine Geological Survey Guangzhou Research Center for Gas Hydrate Guangzhou Institute of Energy Conversion of Chinese Academy of Sciences CAS Key Laboratory Marginal Sea Geology Guangzhou Institute of Geochemistry of Chinese Academy of Sciences

Temperature and pressure on seafloor of the northern slope in the South China Sea are suitable for gas hydrate formation, but bottom simulation reflector (BSR), an indication of gas hydrate occurrence, only occurred in limited areas of the slope. Drillings in the BSR-distributed area (the District S) on the northern slope of the South China Sea suggested that gas hydrate only occurred at Sites SH2, SH3, and SH7 with high saturation (up to 20%-40%), and there is no hydrate at Sites SH1 and SH5 although the distance between SH1 to SH3 is only 500m. In this paper, we investigated seafloor gradient, fault development, temperature, and pressure in the District S on the northern slope of the South China Sea to understand the possible factors con- trolling BSR distribution and gas hydrate occurrence. The District S is a structurally fractured continental slope zone and its seafloor gradient varied greatly. The BSR-occurred areas have an average gradient of 19.89×10 2 whereas the BSR-free zone has the average gradient of 10.57×10 2 . The calculated relative structural intensities from fault densities and displacements show that the BSR-distributed areas tend to occur in the areas with a moderately high structural intensity, where faults frequently developed close to the seafloor that are possibly favored for lateral migration of gases. On the basis of temperatures and pressures at drilling sites, hydrate-occurred Sites SH2, SH3, and SH7 are located within the thermodynamically stable area for methane hydrate, and hydrate-absent Sites SH1 and SH5 are out of the thermodynamically stable area for methane hydrate formation, suggesting that both BSR and the thermodynamic stability are necessary for hydrate occurrence in the subsurface.

关键词： controlling factors BSR distribution gas hydrate occurrence seafloor gradient structural intensity T-P condition

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