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Corrosion behavior of co-gasification slag of furfural residue and coal on alumina-silica refractories

燃料化学学报（中英文） 2024年第10期52卷 1387-1397页

作者： MA Xiaotong WANG Zhigang LU Hao LIU Wei WANG Yanxia ZHAO Jiangshan SUN Lingmin YAN Jingchong ZHUANG Shujuan LI Huaizhu kong lingxue College of Chemistry and Chemical Engineering Dezhou UniversityDezhou 253023China School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255000China State Key Lab of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China School of Chemistry&Chemical Engineering Anhui University of TechnologyMa’anshan 243002China

Gasification of furfural residue with coal can realize its efficient and clean *** the high alkali metal content in furfural slag is easy to cause the corrosion of gasifier *** gasification coals with different silica alumina ratio and a furfural residue were selected in the *** effects of furfural residue additions on corrosion of silica brick,corundum brick,high alumina brick and mullite brick were investigated by using XRD,SEM-EDS and Factsage Software,and the corrosion mechanism was *** increasing furfural residue addition,the permeability of the slags to high-aluminium-bearing refractories first decreases and then increases,while the permeability on silica brick shows a slight decrease ***(KAlSi_(2)O_(6))with high-melting temperature is generated from the reaction of K_(2)O and SiO_(2)in slag with Al_(2)O_(3)in refractories after furfural residue is added,which hinders the infiltration of slag in ***(KAlSiO_(4))of low-melting point is formed when K_(2)O content increases,and this contributes to the infiltration of slag in *** acid-base reaction between slag and silica brick is distinctly occurred,more slag reacts with SiO_(2)in the silicon brick,resulting in a decrease in the amount of slag infiltrating into the silicon brick as furfural residue is *** corrosion of silica brick is mainly caused by the acid-base reaction,while the corrosion of three alumina based refractory bricks of corundum,mullite and high alumina brick is determined by slag infiltration.A linear correlation between the percolation rate and slag viscosity is established,the slag permeability increases with decreasing viscosity,resulting in stronger permeability for the high Si/Al ratio slag with lower viscosity.

关键词： furfural residue co-gasification slag refractory corrosion

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紫苏多糖体外抗氧化活性及对肝细胞氧化损伤的保护作用

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中国油脂 2024年第9期49卷 120-127页

作者：王士博孔令雪刘金娟江苏师范大学生命科学学院江苏徐州221116

旨在为紫苏饼粕的高值化利用提供参考,以采用水提醇沉法从紫苏粕中提取的紫苏多糖(PMP)为原料,检测其对羟自由基(·OH)、超氧阴离子自由基(O_(2)^(-)·)、1,1-二苯基-2-三硝基苯肼自由基(DPPH·)和亚硝酸盐(NO_(2)^(-))的清除能力,考察... 详细信息

旨在为紫苏饼粕的高值化利用提供参考,以采用水提醇沉法从紫苏粕中提取的紫苏多糖(PMP)为原料,检测其对羟自由基(·OH)、超氧阴离子自由基(O_(2)^(-)·)、1,1-二苯基-2-三硝基苯肼自由基(DPPH·)和亚硝酸盐(NO_(2)^(-))的清除能力,考察其体外抗氧化活性;同时,使用H_(2)O_(2)建立LO2细胞氧化损伤模型,在细胞水平上探讨PMP的抗氧化能力,并进一步研究PMP对LO2肝细胞氧化应激损伤的保护作用机制。结果表明:PMP对·OH、O_(2)^(-)·、DPPH·、NO_(2)^(-)均具有一定的清除能力,其EC_(50)分别为964.59、6376.84、333.55、275.24μg/mL;LO2细胞氧化损伤模型的构建条件为H_(2)O_(2)浓度800μmol/L处理时间24 h;PMP可显著提高H_(2)O_(2)诱导损伤的LO2细胞活力,当PMP质量浓度为1000μg/mL时,细胞活力可提高到92.46%;在保护LO2细胞氧化损伤机制方面,PMP显著降低H_(2)O_(2)诱导的细胞内活性氧(ROS)生成水平,提升线粒体膜电位,提高细胞内谷胱甘肽(GSH)含量以及超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性,减少丙二醛(MDA)的含量,并通过显著上调凋亡蛋白Bcl-2的表达和下调Bax的表达改善氧化应激损伤引起的细胞凋亡,提高细胞的增殖活性。综上,PMP表现出一定的自由基清除活性以及对H_(2)O_(2)氧化损伤的LO2细胞的保护作用。

关键词：紫苏多糖自由基清除肝细胞氧化应激细胞凋亡

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建设认证检测行业刑事合规制度探究

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质量与认证 2024年第9期 84-86页

作者：孔令学刘春钰北京联合大学

本文探讨了认证检测行业刑事合规制度建设的必要性,梳理了该行业可能存在的刑事合规风险,并提出了合规建设方案,以期助力认证检测行业有序稳健发展。

关键词：合规管理刑事合规认证检测实证研究

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新疆高校高层次人才队伍建设的探索与实践

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昌吉学院学报 2024年第2期 121-126页

作者：孔令雪樊晓霞昌吉学院马克思主义学院新疆昌吉831100

随着人才强国战略的全面实施,人才特别是高层次人才竞争日益激烈。在新发展格局下,新疆高校作为优秀人才的聚集地和人才培养的主阵地,面对“变局、困局、危局”,既要抢抓高层次人才工作的重大机遇,创新思路、主动变革;又要结合新疆高校... 详细信息

随着人才强国战略的全面实施,人才特别是高层次人才竞争日益激烈。在新发展格局下,新疆高校作为优秀人才的聚集地和人才培养的主阵地,面对“变局、困局、危局”,既要抢抓高层次人才工作的重大机遇,创新思路、主动变革;又要结合新疆高校实际,明确高层次人才的界定,制定高层次人才队伍建设总体规划,做好顶层设计,在引育力度、平台驱动、体制机制上创新管理,健全高层次人才队伍建设机制。

关键词：新疆高校高层才人才创新机制

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煤气化过程反应模型研究进展

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化工进展 2024年第7期43卷 3593-3612页

作者：丁路王培尧孔令学白进于广锁李文王辅臣华东理工大学洁净煤技术研究所上海200237 华东理工大学含碳废弃物资源化零碳利用教育部工程研究中心上海200237 中国科学院山西煤炭化学研究所煤炭高效低碳利用全国重点实验室山西太原030001

煤炭是我国能源安全的压舱石,煤气化作为煤炭清洁高效利用的核心技术对实现“碳达峰、碳中和”的战略目标具有重要作用。基于动态原位表征揭示煤气化反应机理并建立煤气化模型,对拓展煤炭和生物质等含碳物料作为气化原料的适用性,开发... 详细信息

煤炭是我国能源安全的压舱石,煤气化作为煤炭清洁高效利用的核心技术对实现“碳达峰、碳中和”的战略目标具有重要作用。基于动态原位表征揭示煤气化反应机理并建立煤气化模型,对拓展煤炭和生物质等含碳物料作为气化原料的适用性,开发新型高效的气化技术有重要的理论指导价值。同时,煤灰的流动性质是影响气化炉长周期稳定运行的关键指标。本文详细综述了煤气化过程的动力学模型、热力学模型、床层模型以及煤灰流动性的预测模型,对比了各类模型的优缺点、适用的条件以及描述气化过程的性能,指出了不同方法建立的模型存在的问题,为气化过程的总包反应模型建立提供了理论指导,并针对煤气化过程反应模型未来的研究重点进行了展望。

关键词：煤气化动力学模型热力学床层模型煤灰流动性预测模型

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气流床气化炉中煤气化熔渣的结晶行为研究进展

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洁净煤技术 2024年第6期30卷 47-67页

作者：鲁浩白进孔令学郭振兴李怀柱李文中国科学院山西煤炭化学研究所煤炭高效低碳利用全国重点实验室山西太原030001 中国科学院大学北京100049

煤气化是实现煤炭从燃料向原料转变,推进煤炭清洁高效利用的重要途径之一。气流床气化技术是目前的主流气化技术,气化炉的稳定运行要求液态熔渣应具有良好的流动性。排渣过程中的熔渣结晶行为会导致熔渣流动性变差,是造成气化炉非正常... 详细信息

煤气化是实现煤炭从燃料向原料转变,推进煤炭清洁高效利用的重要途径之一。气流床气化技术是目前的主流气化技术,气化炉的稳定运行要求液态熔渣应具有良好的流动性。排渣过程中的熔渣结晶行为会导致熔渣流动性变差,是造成气化炉非正常停车的主要原因。总结了影响熔渣流动性的主要结晶特征及研究结晶行为的关键——结晶动力学的研究现状。论述根据结晶行为判断结晶机制并选择合适的结晶动力学模型的方法。为获得更准确的结晶行为数据,总结多种结晶检测手段的原理和特点并分析了根据研究重点、仪器特性与熔渣特性选择合适结晶行为的检测手段。最后,论述了化学组成与操作条件对结晶行为的影响。研究发现不同晶体之间结晶机理差异明显,同一化学组成对不同晶体结晶行为的影响不同。当限定熔渣化学组成所处相区时,化学组成与操作条件对第一相结晶矿物质结晶行为的影响更具规律性,可为调控结晶行为提供更准确指导。研究结果与相图结合或建立简单易得的预测模型能更好指导熔渣结晶行为调控。目前,结晶行为研究主要依赖试验手段,后续研究可结合相场模拟与分子动力学模拟等方法,深入挖掘结晶机理,并考察气化炉内温度场、流场等因素对结晶特性的影响。

关键词：气流床气化熔渣流动性矿物质结晶结晶模拟结晶动力学结构转变

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Omniphobic membranes for distillation:Opportunities and challenges

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Chinese Chemical Letters 2021年第11期32卷 3298-3306页

作者： Tianlong Ni Jiuyang Lin lingxue kong Shuaifei Zhao Deakin University Institute for Frontier Materials(IFM)GeelongVIC 3216Australia School of Environment and Resources Fuzhou UniversityFuzhou 350116China

As an emerging thermal-driven membrane technology,membrane distillation(MD)has attracted immense attention for desalination and water *** membranes for MD generally have hydrophobic or superhydrophobic properties to enable vapor permeation without liquid passage(e.g.,wetting).However,conventional MD membranes cannot undergo long term stable operations due to gradual wetting in practical applications where the feed solution often contains multiple low-surface tension contaminants(e.g.,oil).Recently,omniphobic membranes repelling all sorts of liquids and typically having ultralow surface energy and re-entrant structures have been developed for robust MD to mitigate wetting and *** this paper,we aim to provide a comprehensive review of recent progress on omniphobic ***,desirable properties,advantages and applications of omniphobic membranes are *** also summarize the research efforts and methods to engineer omniphobic ***,the challenges and future research directions on omniphobic membranes are discussed.

关键词： Omniphobic membrane Membrane distillation Hydrophobic membrane Desalination Wetting Anti-wetting

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Synthesis of porous iron hydroxy phosphate from phosphate residue and its application as a Fenton-like catalyst for dye degradation

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Journal of Environmental Sciences 2022年第2期34卷 307-319页

作者： Weilin Guo Yin Cao Yi Zhang Lijun Wang lingxue kong School of Environmental and Materials Engineering Shanghai Polytechnic UniversityShanghai 200240China Deakin University GeelongInstitutefor Frontier MaterialsVictoria 3216Australia Shanghai Innovation Institutefor Materials Shanghai 200444China

Phosphate residue is a kind of hazardous solid waste and if not properly disposed of, could cause serious environmental contaminations. The abundant iron salt available in phosphate residue can be used to prepare photo-Fenton catalytic reagent for wastewater treatment. In this study, the phosphate residue was effectively purified by a hydrothermal recrystallization method, reaching an iron phosphate purity of 94.2%. The particles of iron phosphate were further processed with ball milling with their average size reduced from 19.4 to 1.6 μm. By hydrothermal crystallization of iron phosphate and thermal decomposition of oxalate precursor, porous iron hydroxy phosphate was prepared. The modified porous iron hydroxy phosphate(m-PIHP) of higher surface area with iron oxalate on its surface can degrade 98.87% of Rhodamine B in 15 min. Cyclic experiment showed that the catalyst still had a good catalytic activity after six cycles( > 40%). The X-ray photoelectron spectroscopy results showed that the iron oxalate complex on the catalyst surface decomposed to produce ferrous ions and accelerated the rate of · OH production. The current work demonstrated that the m-PIHP synthesized from phosphate residue and modified with iron oxalate can be used as an effective dye wastewater treatment agent.

关键词： Phosphate residue Porous iron hydroxy phosphate Fenton-like ·OH

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Modification of ash flow properties of coal rich in calcium and iron by coal gangue addition

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Chinese Journal of Chemical Engineering 2021年第7期34卷 239-246页

作者： Huaizhu Li lingxue kong Jin Bai Zongqing Bai Zhenxing Guo Wen Li Key Laboratory of Coal Processing and Efficient Utilization Ministry of EducationXuzhou 221116China State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China

Flow property of coal ash and slag is an important parameter for slag tapping of entrained flow *** viscosity of slag with high contents of calcium and iron exhibits the behavior of a crystalline slag,of which viscosity sharply increases when temperature is lowered than temperature of critical viscosity(TCV).The fluctuation in temperature near the TCVcan cause an accumulation of slag inside the *** order to prevent slag blockage,it is necessary to adjust the ash composition by additive to modify the flow property of coal rich in calcium and *** components of coal gangue are Al_(2)O_(3) and SiO_(2),which is a potential additive to modify the ash flow properties of these *** this work,we investigated the ash flow properties of a typical coal rich in calcium and iron by adding coal gangue with different SiO_(2)/Al_(2)O_(3)*** results showed that the ash fusion temperatures(AFTs)firstly decreased,and then increased with increasing amount of coal gangue *** composition of coal ash rich in calcium and iron moved from gehlenite primary phase to anorthite,quartz and corundum primary *** slags with coal gangue addition behaved as a glassy slag,of which the viscosity gradually increased as temperature ***,a high SiO_(2)/Al_(2)O_(3)ratio of coal gangue was beneficial to modify the slag viscosity *** of coal gangue with a high SiO_(2)/Al_(2)O_(3)ratio impeded formation of crystalline phases during *** work demonstrated that coal gangue addition was an effective way to improve the ash flow properties of the coal rich in calcium and iron for the entrained flow gasifier.

关键词： Coal gangue Coal rich in calcium and iron Ash fusion temperatures Viscosity-temperature characteristic Phase transformation

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Photocatalytic degradation of phenanthrene on soil surfaces in the presence of nanometer anatase TiO_2 under UV-light

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Journal of Environmental Sciences 2012年第12期24卷 2122-2126页

作者： Jiali Gu Dianbo Dong lingxue kong Yong Zheng Xiaojun Li College of Chemistry Chemical Engineering and Food SafetyBohai UniversityJinzhou 121013China Liaoning Academy of Environmental Sciences Shenyang 110031China Institute for Frontier Materials Deakin UniversityGeelong Vic 3217Australia Liaoning University Shenyang 110136China Key Laboratory of Pollution Ecology and Environmental Engineering Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China

The effect of nanometer anatase TiO2 was investigated on the photocatalytic degradation of phenanthrene on soil surfaces under a variety of conditions. After being spiked with phenanthrene, soil samples loaded with different amounts of TiO2 （0 wt.%, 1 wt.%, 2 wt.%, 3 wt.%, and 4 wt.%） were exposed to UV-light irradiation for 25 hr. The results indicated that the photocatalytic degradation of phenanthrene followed the pseudo first-order kinetics. TiO2 significantly accelerated the degradation of phenanthrene with the half-life reduced from 45.90 to 31.36 hr for TiO2 loading of 0 wt.% and 4 wt.%, respectively. In addition, the effects of H202, light intensity and humic acid on the degradation of phenanthrene were investigated. The degradation of phenanthrene increased with the concentration of H202, light intensity and the concentration of humic acids. It has been demonstrated that the photocatalytic method in the presence of nanometer anatase TiO2 was a very promising technology for the treatments of soil polluted with organic substances in the future.

关键词： nanometer anatase Ti02 photocatalytic degradation phenanthrene soil surfaces UV-light

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