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| 1 | Effect of Calcium Oxide Additive on the Performance of Iron Oxide Sorbent for High-Temperature Coal Gas Desulfurization显示文摘The effect of calcium oxide additive in iron oxide sorbent for hot gas desulfurization was investigated by XRD and TPR techniques.XRD characterization showed that CaO was highly dispersed after the calcination of sorbents.Calcium sulfate formed in the desulfurization was decomposed and regenerated to CaO by reacting with CO before the next sulfidation process.Calcium participated in every sulfidation/regeneration cycle and contributed to the enhancement of sulfur capacity.The TPR results showed that the reduction temperature of the sorbent increased with the increase of the content of calcium.Calcium played a role of retarding reduction.Therefore,the addition of calcium oxide additive will benefit the utilization of iron oxide sorbent in strongly reducing atmospheres. | Huiling Fan Kechang Xie Ju Shangguan Fang Shen Chunhu Li | 2007 | Journal of Natural Gas Chemistry2007，16，4： | 7 |
| 2 | A review on nitrogen transformation and conversion during coal pyrolysis and combustion based on quantum chemical calculation and experimental study显示文摘The emission of NOx during coal combustion contributes to the formation of acid rain and photochemical smog,which would seriously affect the quality of atmospheric environment.Therefore,the decrease of NOx is of great importance for improving the efficient utilization of coal.The present review comprehensively summarized the influence factors and mechanisms of migration and transformation of nitrogen during the coal pyrolysis and combustion based on experimental study and quantum chemical calculation.Firstly,in the process of pyrolysis:the occurrence state and transformation of nitrogen were concluded.The influence of temperature,atmosphere,heating rate and catalyst on formation of NOx precursor and nitrogen migration path at the molecular level were summarized;Secondly,during the process of combustion:the influence of temperature,ambient oxygen concentration,physical structure of coal char,catalyst on heterogeneous oxidation of char(N)were summarized;The effects of char surface properties,catalyst and ambient atmosphere on heterogeneous reduction of NOx were also concluded.Based on the quantum chemical calculation,the reaction path of heterogeneous oxidation of char-N and heterogeneous reduction of NOx were described in detail.Current studies focus more on the generation of HCN and NH3,but in order to reduce the pollution of NOx from the source,it is necessary to further improve the process conditions and the optimal formula of producing more N2 during pyrolysis,as well as clarify the path of the generation of N2.Experiments study and quantum chemistry calculation should be combined to complete the research of directional nitrogen reduction during pyrolysis and denitration during combustion. | Tingting Jiao Huiling Fan Shoujun Liu Song Yang Wenguang Du Pengzheng Shi Chao Yang Yeshuang Wang Ju Shangguan | 2021 | Chinese Journal of Chemical Engineering2021，34，7： | 2 |
| 3 | Preparation and Nanotribological Behavior of APTES/Rare earth Composite Film 显示文摘 | Wu Ju Chen Xianhua Shangguan Qianqian | 2005 | Tribology2005，225，2： | 1 |
| 4 | Hydrolysis of carbonyl sulfide and carbon disulfide over alumina based catalysts显示文摘 | Shangguan Ju Li Chunhu Guo Hanxian | 1998 | Journal of Natural Gas Chemistry1998，7，1： | 1 |
| 5 | Desulfurization matching with coal poly-generation system based on dual gas resources 显示文摘 | Shangguan Ju Miao Maoqian Chang Liping | 2009 | Fuel2009，89，4： | 1 |
| 6 | Regeneration of FezO3-based high-temperature coal gas desulfurization sorbent in atmosphere with sulfur dioxide 显示文摘 | Zhao Ruizhuang Shangguan Ju Lou Yanru | 2010 | Frontiers of Chemical Engineering in China2010，4，4： | 1 |
| 7 | Desulfu- rization matching with coal poly-generation system based on dual gas resources显示文摘 | Shangguan Ju Miao Maoqian Chang Liping | 2010 | Fuel2010，89，4： | 1 |
| 8 | The effect of sodium sulphate on the hydrogen reduction process of nickel laterite ore显示文摘 | Jie Lu Shoujun Liu Ju Shangguan Wenguang Du Feng Pan Song Yang | 2013 | Minerals Engineering2013，，： | 1 |
| 9 | Influence of Gas Components on the Formation of Carbonyl Sulfide over Water-Gas Shift Catalyst B303Q显示文摘在更低的温度的水气体转移反应催化剂(200 ¨ C 400 ??6 号元素碳的化学符号) 可以改进一氧化碳的变换。但是硫化羰被发现在为水气体转移反应的 sulfided cobalt-molybdenum/alumina 催化剂上在场。在在 200 ¨ C 的 sulfided cobalt-molybdenum/alumina 催化剂 B303Q 上的硫化羰的形成上的温度,空间速度,和煤气的部件的影响 400 ??6 号元素碳的化学符号在模仿的水气体移动条件下面在一个管状的改正床石英眼镜反应堆被学习。试验性的结果证明在 B303Q 催化剂上的硫化羰的收益在 220 点到达了最大值??有温度的增加的6号元素碳的化学符号,严厉地随空间速度和水蒸气的内容的增加减少了,随一氧化碳和二氧化碳的内容的增加增加了,并且它的收益随氢和硫化氢的内容的增加增加了然后到达稳定的价值。在在 200 ¨C 的 B303Q 催化剂上的硫化羰的形成机制 400 ??6号元素碳的化学符号根据这些因素怎么影响公司的形成被讨论在在 200 ¨C 的 B303Q 催化剂上的硫化羰的收益 400 ??6号元素碳的化学符号也就是说是二反应的联合结果公司被一氧化碳的反应首先与硫化氢生产,然后同样生产的公司被水解作用变换成硫化氢和二氧化碳。公司形成的机制如下被假定:在 Co9S8-MoS2/Al2O3 晶格的硫原子容易在水气体移动气体与公司,然后硫化氢被搬迁并且形成硫化羰在 CoO-MoO3/Al2O3 与晶格氧原子反应了形成 Co9S8-MoS2/Al2O3。为在水气体移动催化剂 B303Q 上的公司的形成的这机制根据火星货车 Krevelen ?? 在金属硫化物上的 s 氧化还原作用机制。给词调音:形成;硫化羰;sulfided cobalt-molybdenum/alumina 催化剂; | Ju Shangguan Litong Liang Huiling Fan Fang Shen | 2007 | Journal of Natural Gas Chemistry2007，16，1： | 0 |
| 10 | Role of iron-based catalysts in reducing NO_(x) emissions from coal combustion显示文摘Nitrogen oxide(NO_(x))pollutants emitted from coal combustion are attracting growing public concern.While the traditional technologies of reducing NO_(x) were mainly focused on terminal treatment,and the research on source treatment is limited.This paper proposes a new coal combustion strategy that significantly reduces NO_(x) emissions during coal combustion.This strategy has two important advantages in reducing NO_(x) emissions.First,by introducing iron-based catalyst at the source,which will catalyze the conversion of coke nitrogen to volatile nitrogen during the pyrolysis process,thereby greatly reducing the coke nitrogen content.The second is de-NO_(x) process by a redox reaction between NO_(x) and reducing agents(coke,HCN,NH_(3),etc.)that occurred during coke combustion.Compared to direct combustion of coal,coke prepared by adding iron-based catalyst has 46.1% reduction in NO_(x) emissions.To determine the effect of iron-based additives on de-NO_(x) performance,demineralized coal(de-coal)was prepared to eliminate the effect of iron-based minerals in coal ash.The effects of iron compounds,additive dosages,and combustion temperatures on de-NO_(x) efficiency are systematically studied.The results revealed that the NO_(x) emission of the coke generated by pyrolysis of de-coal loaded with 3%(mass)Fe_(2)O_(3) decreases to 27.3% at combustion temperature of 900℃.Two main reasons for lower NO_(x) emissions were deduced:(1)During the catalytic coal pyrolysis stage,the nitrogen content in the coke decreases with the release of volatile nitrogen.(2)Part of the NO_(x) emitted during the coke combustion was converted into N_(2) for the catalytic effect of the Fe-based catalysts.It is of great practical value and scientific significance to the comprehensive treatment and the clean utilization process of coal. | Yuehua Liu Lili Chen Shoujun Liu Song Yang Ju Shangguan | 2023 | Chinese Journal of Chemical Engineering2023，59，7： | 0 |
| 11 | Sulfur retention efficiency of clean coke produced by co-pyrolysis of coal with CaCO_(3) to substitute household coal显示文摘Raw coal is used by many suburban and rural households for cooking and heating and results in severe air pollution,especially problematic SO_(2) emissions.A source treatment strategy was proposed to reduce SO_(2) emissions,which used the co-pyrolysis of raw coal with a CaCO3 additive to produce clean coke.The effect of Ca/S molar ratio on the SO_(2) capture efficiency of clean coke was investigated,and the SO_(2) retention efficiency was optimized at a Ca/S molar ratio of 1.5.The sulfur retention mechanism of clean coke was attributed to:(1)CaCO3 decomposition to CaO and partial reaction of CaO with H2S to generate CaS during pyrolysis.(2)Transformation of the remaining sulfur in the clean coke to SO_(2) during combustion,capture by unreacted CaO to form CaSO_(4),and direct oxidation of CaS to CaSO_(4).The feasibility of SO_(2) emission reduction by clean coke in a practical household stove was verified. | Shoujun Liu Mingyi Wang Kaixia Zhang Zhongliang Yu Song Yang Ju Shangguan Guoqiang Zhang Wenguang Du Jin Li Yuehua Liu | 2021 | Carbon Resources Conversion2021，4，1： | 0 |
| 12 | Regeneration of Fe_(2)O_(3)-based high-temperature coal gas desulfurization sorbent in atmosphere with sulfur dioxide显示文摘Regeneration of a high-temperature coal gas desulfurization sorbent is a key technology in its industrial applications.A Fe_(2)O_(3)-based high-temperature coal gas desulfurizer was prepared using red mud from steel factory.The influences of regeneration temperature,space velocity and regeneration gas concentration in SO_(2) atmosphere on regeneration performances of the desulfurization sorbent were tested in a fixed bed reactor.The changes of phase and the composition of the Fe_(2)O_(3)-based high-temperature coal gas desulfurization sorbent before and after regeneration were examined by X-ray diffraction(XRD)and X-ray Photoelectron spectroscopy(XPS),and the changes of pore structure were characterized by the mercury intrusion method.The results show that the major products are Fe3O4 and elemental sulfur;the influences of regeneration temperature,space velocity and SO_(2) concentration in inlet on regeneration performances and the changes of pore structure of the desulfurization sorbent before and after regeneration are visible.The desulfurization sorbent cannot be regenerated at 500℃ in SO_(2) atmosphere.Within the range of 600℃-800℃,the time of regeneration becomes shorter,and the regeneration conversion increases as the temperature rises.The time of regeneration also becomes shorter,and the elemental sulfur content of tail gas increases as the SO_(2) concentration in inlet is increased.The increase in space velocity enhances the reactive course;the best VSP is 6000 h^(-1) for regeneration conversion.At 800℃,20 vol-%SO_(2) and 6000 h^(-1),the regeneration conversion can reach nearly to 90%. | Ruizhuang ZHAO Ju SHANGGUAN Yanru LOU Jin SONG Jie MI Huiling FAN | 2010 | Frontiers of Chemical Science and Engineering2010，4，4： | 0 |
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