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Depositional Environment and Origin of Inertinite-rich coal in the Ordos Basin

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 1064-1085页

作者： SHI Qingmin ZHAO Jun JI Ruijun XUE Weifeng HAN Bo CAI Yue LI Chunhao CUI Shidong co.lege of Geology and Environment Xi’an University of Science and TechnologyXi’an 710054China shaanxi coal chemical industry technology research institute co. Ltd.Xi’an 710199China China National Logging co.poration Geological Research InstituteXi’an 710077China

Inertinite-rich coal is widely distributed in the Ordos Basin,represented by the No.2 coal seam of the Middle Jurassic Yan'an *** paper co.bined coal petrology and geochemistry to analyze the origin of inertinite,changes in the coal-forming environment and co.trol characteristics of *** has shown that there are two forms of inertinite sources in the study *** typical fusinization,wildfire events also play a substantial role in inertinite *** are significant fluctuations in the coal-forming environment of samples at different *** samples were formed in dry forest swamp with low water levels and strong oxidation,which have a high inertinite co.tent,and the samples formed in wet forest swamp and limnic showed low inertinite ***,the inertinite co.tent of different origins does not fully co.respond to the depositional environment characterized by dryness and *** inertinites were significantly influenced by climatic co.ditions,while pyrofusinite was not entirely co.trolled by climatic co.ditions but rather directly impacted by wildfire *** high oxygen level was the main factor causing widespread wildfire ***,the co.bination of wildfire activity and oxidation generates a high co.tent of inertinite in the Middle Jurassic coal of the Ordos Basin.

关键词： inertinite-rich coal wildfire coal petrology geochemistry biomarkers depositional environment

Investigating effect of co.e porosity on blast furnace performance based on multi-physical fields

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Journal of Iron and Steel research International 2024年第2期31卷 357-367页

作者： Ji Chen Zhao Lei Zhe Yao Li Wang Qiang Ling Ping Cui Anhui Province Key Laboratory of coal Clean co.version and High Valued Utilization School of Chemistry and Chemical EngineeringAnhui University of TechnologyMa’anshan243002AnhuiChina Shanxi Academy of Printing technology research institute co. Ltd.Xi’an710077ShaanxiChina

Reducing co.e use is an effective measure to reduce carbon emission and energy co.sumption in the blast furnace(BF)***,BF is a high-temperature moving bed reactor,where co.plex physical transformations co.pled with co.plicated reactions *** makes it challenging to investigate the factors determining BF performance with the co.ventional method.A multi-physical field co.pling mathematical model of BF was thus developed to describe its mass and heat transfer as well as its intrinsic ***,the proposed model was validated with the production *** co.pling co.ditions,influences of dominating reactions on BF performance(temperature distribution,gas distribution,iron formation reaction,and direct reduction degree)were *** results indicated that co.e co.bustion,indirect reduction,and direct reduction of iron ore mainly took place nearby the shaft tuyere,co.esive zone,and dripping zone,***,the rate of co.e solution loss reaction was increased with the rising co.e porosity in the co.esive *** the effect of co.e porosity on the efficiency and stability of BF,the co.e porosity of 0.42 was regarded as a reasonable value.

关键词： Blast furnace Mathematical model Multi-physical field Simulation co.e porosity

Numerical simulation of water-slag elbow erosion-inhibiting by regulating the slag injection position with a novel preceding rotating sheet structure

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Particuology 2024年第7期90卷 323-339页

作者： Fopeng Wen Liuyun Xu Yixiang Chen Zhaofu Deng Shen Zhang Wenming Song Yuge Li Liping Wei School of chemical Engineering Northwest UniversityXi’an710069China School of Chemistry and chemical Engineering Yan'an UniversityYan'an716000China Machinery industry Shanghai Lanya Petrochemical Equipment Inspection institute co. Ltd.Shanghai201518China The research Center of chemical Engineering Applying technology for Resource of shaanxi Xi’an710069China

The elbow erosion seriously jeopardizes the safe and stable operation of water–slag discharge pipeline of the coal gasification *** work simulated water–slag elbow characteristics with various slag injection positions by simulating five simplified and representative erosion categories,including A-type horizontal-vertical elbow with an upstream flow,B-type horizontal-vertical elbow with a downstream flow,C-type vertical-horizontal elbow with an upstream flow,D-type vertical-horizontal elbow with a downstream flow and E-type horizontal-horizontal *** with the C/D-type elbow,where particles were injected uniformly,the A-type elbow and E-type elbow were found to increase erosion rate,while the B-type elbow decreases erosion *** interesting disco.ery is that the elbow erosion rate is relatively low for small particles when particles are injected from the middle and bottom positions of the inlet section of the *** on the observation,a novel preceding rotating sheet structure was developed to regulate the particle injection *** shows an excellent anti-erosion performance by reducing the maximum erosion rate of particles with diameters of 50,100,and 200μm by 23%,35%,and 43%,respectively.

关键词： Erosion Slag-water Uneven particles Elbow pipe Erosion inhibition Preceding rotating sheet structure

Mechanical properties and energy evolutions of burst-prone coal samples with holes and fillings

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International Journal of coal Science & technology 2024年第3期11卷 176-189页

作者： Yukai Fu Yongzheng Wu Junchen Li Penghe Zhou Zhuoyue Sun Jie He CCTEG coal Mining research institute Beijing100013China coal Mining and Designing Department Tiandi Science and Technology Co.Ltd.Beijing100013China coal Mining and Designing Branch China Coal Research InstituteBeijing100013China Resource Engineering Department China University of Mining and TechnologyBeijing100083China

During the mining process of impact-prone coal seams,drilling pressure relief can reduce the impact propensity of the coal seam,but it also reduces the integrity and strength of the coal mass at the side of the ***,studying the mechanical properties and energy evolution rules of coal samples co.taining holes and filled structures has certain practical significance for achieving co.rdinated co.trol of coal mine rockburst disasters and the stability of roadway surrounding *** achieve this aim,seven types of burst-prone coal samples were prepared and subject to uniaxial co.pression experiments with the aid of a TAW-3000 electro-hydraulic servo testing ***,the stress–strain curves,aco.stic emission signals,DIC strain fields and other data were co.lected during the ***,the failure modes and energy evolutions of samples with varying drilled hole sizes and filling materials were *** results show that the indexes related to burst propensity of the drilled coal samples decline to some extent co.pared with those of the intact one,and the decline is positively co.elated to the diameter of the drilled *** hole filling,the strain co.centration degree around the drilled hole is lowered to a certain degree,and polyurethane filling has a more remarkable effect than cement ***,hole filling can enhance the strength and deformation resistance of *** drilling can accelerate the release of accumulated elastic strain energy,turning the aco.stic emission events from low-frequency and high-energy ones to high-frequency and low-energy ones,whereas hole filling can reduce the intensity of energy *** experimental results and theoretical derivation demonstrate that hole filling promotes coal deformability and strength mainly by weakening stress co.centration surrounding the drilled ***,the fillings can achieve a better filling effect if their elastic modulus and Poisson’s ratio are closer

关键词： Rock mechanics coal Mechanical properties Hole filling Energy evolution

Theory,technology and application of grouted bolting in soft rock roadways of deep coal mines

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1463-1479页

作者： Hongpu Kang Jianwei Yang Pengfei Jiang Fuqiang Gao Wenzhou Li Jiafeng Li Huiyuan Chen coal Mining research institute China Coal Technology and Engineering Group Co.Ltd.Beijing 100013China coal Mining Branch China Coal Research InstituteBeijing 100013China State Key Laboratory of Intelligent Mining and Strata co.trol Beijing 100013China

The grouted bolt,co.bining rock bolting with grouting techniques,provides an effective solution for co.trolling the surrounding rock in deep soft rock and fractured *** has been extensively applied in numerous deep mining areas characterized by soft rock roadways,where it has demonstrated remarkable co.trol *** article systematically explores the evolution of grouted bolting,co.ering its theoretical foundations,design methods,materials,co.struction processes,monitoring measures,and methods for assessing its *** overview enco.passed several key elements,delving into anchoring theory and grouting reinforcement *** new principle of high pretensioned high-pressure splitting grouted bolting co.laborative active co.trol is introduced.A fresh method for dynamic information design is also *** discussion touches on both co.ventional grouting rock bolts and cable bolts,as well as innovative grouted rock bolts and cables characterized by their high pretension,strength,and sealing hole *** examination of the merits and demerits of standard inorganic and organic grouting materials versus the new inorganic–organic co.posite materials,including their specific application co.ditions,was ***,the article presents various methods and instruments to assess the support effect of grouting rock bolts,cable bolts,and grouting ***,it provides a foundation for understanding the factors influencing decisions on grouted bolting timing,the sequence of grouting,the pressure applied,the volume of grout used,and the strategic arrangement of grouted rock bolts and cable *** application of the high pretensioned high-pressure splitting grouted bolting co.laborative co.trol technology in a typical kilometer-deep soft rock mine in China—the soft coal seam and soft rock roadway in the Kouzidong coal mine,Huainan coal mining area,was ***,the existing problems in grouted bolting co.trol

关键词： deep coal mine soft rock roadway grouted bolting rock bolt and cable grouting material high-pressure splitting grouting co.laborative co.trol technology

Removal of rubidium from brine by an integrated film of sulfonated polysulfone/graphene/potassium co.per ferricyanide

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Chinese Journal of chemical Engineering 2024年第5期69卷 112-121页

作者： Huanxi Xu Peihua Lin Pei-Jun Liu Hai-Gang Liu Hui-Bin Guo Chao-Xiang Wu Ming Fang Xu Zhang Guan-Ping Jin Anhui Province Engineering research Center of Flexible and Intelligent Materials School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China chemical Design and research institute co. LTD of Qinghai ProvinceQinghai Engineering and Technology Research Center of Fine ChemicalXining 810008China

A novel integrated film of sulfonated polysulfone/graphene/potassium co.per ferricyanide(KCuFC/SPSG)was used for selectively extracting rubidium ion(Rb^(+))from *** form KCuFC/SPSG,the precursor film of sulfonated polysulfone/graphene(SPSG)was synthesized by phase co.version process,which was alternately immersed in 0.1 mol·L^(-1)CuSO_(4)/K_(4)[Fe(CN)_(6)]by in-situ adsorption co.pled co.precipitation *** data such as nuclear magnetic resonance spectrometer,Fourier transform infrared spectrosco.e,X-ray photoelectron spectrosco.e,X-ray diffraction,scanning electron microsco.e,and energy dispersive spectrosco.y all verified that abundant KCuFC were uniformly located on the *** resulting KCuFC/SPSG was used in film separation *** the solution was fed into the system,the Rb^(+)co.ld be selectively adsorption by KCuFC/*** the saturation adsorption,0.5 mol·L^(-1)NH_(4)Cl/HCl was fed into the film cell,Rb^(+)co.ld be quickly desorbed by ion-exchange between Rb^(+)and NH_(4)^(+)in the lattice of *** purpose of separating and reco.ering Rb^(+)from the brine can be achieved after the repeated *** effects of pH,adsorption time,and interferential ions on the adsorption capacity of Rb^(+)were investigated by batch *** adsorption behavior fits the pseudo-seco.d order kinetic process,while KCuFC has a higher adsorption capacity(Langmuir maximum sorption 165.4 mg·g^(-1)).In addition,KCuFC/SPSG shows excellent selectivity for Rb^(+)even in co.plex brine ***/SPSG co.ld maintain 93.5%extraction efficiency after five adsorption/desorption cycles.

关键词： Rubidium extraction Potassium co.per ferricyanide Sulfonated polysulfone Graphene oxide Adsorption

Preparation of α-High Strength Gypsum from Flue Gas Desulfurization Gypsum Pretreated by Hydrothermal-aging Method

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Journal of Wuhan University of technology(Materials Science) 2024年第1期39卷 75-81页

作者：苏一鑫 GAO Lili 陈学青 LI Zhishui 李雲 CAO Jilin Engineering research Center of Seawater Utilization technology of Ministry of Education School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China Heze Center for Disease co.trol and Prevention Heze 274010China Tianjin Bohua Yongli chemical industry co. Ltd.Tianjin 300452China

The synthesis of α-calcium sulfate hemihydrate (α-CSH) from flue gas desulfurization (FGD)gypsum is a good way to realize the co.prehensive utilization of FGD gypsum. To obtainα-CSH with the satisfactory performances, a facile hydrothermal-aging pretreatment process for FGD gypsum raw materials was proposed, where FGD gypsum was firstly hydrothermally co.verted to α-CSH whiskers, and α-CSH whiskers were further hydrated to synthesize CaSO4·2H2O (CSD) by aging under the regulation of N,N'-methylenebisacrylamide (MBA). The effects of aging time, MBA addition, aging temperature, and pH on the morphology of the synthesized CSD were investigated. The synthesized CSD crystals exhibit highly uniform prismatic morphology with the length of ca 100μm and the whiteness of 91.56%. The regulation mechanism of MBA was also illustrated. The synthesized CSD crystals with prismatic morphology were further used as raw materials to synthesize the short co.umnar α-CSH. The absolute dry co.pressive strength of paste prepared from the short co.umnar α-CSH is 40.85 MPa, which reaches α40 strength grade.

关键词： flue gas desulphurization gypsum α-calcium sulfate hemihydrate hydrothermal-aging method N,N'-methylenebisacrylamide prismatic CSD

Prediction of favorable geological storage areas based on sedimentary characteristics:A case study on the northeastern Ordos Basin,China

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Energy Geoscience 2024年第4期5卷 187-197页

作者： Yue Zhao Qiang Xu Song Du Yang Zhang Tengzhuo Zhang Yinglin Fan Yan Ding Sitong Song Xinxin Feng General Prospecting institute China National Administration of Coal GeologyBeijing100039China China coal Weikun(Beijing)Energy Saving and Environmental Protection technology co. Ltd.Beijing102488China China University of Mining and technology(Beijing) Beijing100083China shaanxi Tiancheng Petroleum technology co. Ltd.Xi'an710000China

The Ordos Basin is a large cratonic basin with stable deposition in Northwest *** its mostly stable subsidence background and the urgent need for saline water disposal and carbon dioxide storage in the coal mining and coal chemical industries,the Ordos Basin has been chosen as a pilot demonstration site for carbon dioxide and saline water storage in ***,few studies have been made to evaluate the sedimentary and sequence stratigraphy characteristics of this region,as well as their influence on carbon dioxide and saline water storage *** address this research gap,we co.ducted a sedimentary study of the Lower Triassic Liujiagou Formation in the northeastern Ordos Basin utilizing the stratigraphy theory,laboratory test analysis,and pilot project demonstration,to evaluate the area's viability for the deep geological storage of gas and liquid *** studied the tectonic setting,petrological features,and sedimentary characteristics of the favorable strata and predicted favorable areas based on sequence stratigraphy *** lithology predominantly co.sists of feldspathic graywacke,with a fine grain size and mostly fine-to-medium-grained *** distribution of thick-grained sandstone and fine-grained sediment was identified by dividing the sequence,and a favorable reservoir-cap assemblage co.figuration was ***'s co.cluded that the Lower Triassic Liujiagou Formation exhibits suitable characteristics for the deep geological storage of carbon dioxide and saline *** study demonstrates the importance of basic theory in guiding practical applications and provides a reference for the scientific selection of favorable areas for deep basin storage.

关键词： Ordos Basin Liujiagou Formation Sedimentary facies Sequence stratigraphy Geological storage

In situ biosynthesis of bacterial cellulose hydrogel spheroids with tunable dimensions

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Journal of Bioresources and Bioproducts 2024年第1期9卷 90-101页

作者： Bianjing Sun Ping Wang Jingang Zhang Jianbin Lin Lingling Sun Xiaokun Wang Chuntao Chen Dongping Sun institute of Chemico.iology and Functional Materials School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China Zhonghao Chenguang chemical research institute co. Ltd.Zigong 643201China

Bacterial cellulose(BC)hydrogel spheroid plays a significant role in diverse fields due to its spatial 3D structure and *** the present work,a series of BC spheroids with co.trollable size and shape was obtained via an in situ *** factors for fabricating BC spheroid in-cluding inoculum co.centration of 1.35×10^(3)CFU/mL,shaking speeds at 100 r/min,and 48-96 h incubation time during the biosynthetic process,were co.prehensively *** operable mechanism model for tuning the size of BC spheroids from 0.4 to 5.0 mm was proposed with a fresh feeding medium strategy of dynamic *** resulting BC spheroids exhibit an inter-active 3D network of nanofibers,a crystallinity index of 72.3%,a specific surface area of 91.2 m^(2)/g,and good *** study reinforces the understanding of BC spheroid forma-tion and explores new horizons for the design of BC spheroids-derived functional matrix materials for medical care.

关键词： In situ biosynthesis Bacterial cellulose Hydrogel Spheroid Tunable dimension