Article(id=1149769462573876181, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149769458706723113, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2404485, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1718467200000, receivedDateStr=2024-06-16, revisedDate=1740412800000, revisedDateStr=2025-02-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1752056001561, onlineDateStr=2025-07-09, pubDate=1747497600000, pubDateStr=2025-05-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752056001561, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752056001561, creator=13701087609, updateTime=1752056001561, updator=13701087609, issue=Issue{id=1149769458706723113, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='14', pageStart='5705', pageEnd='6154', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752056000638, creator=13701087609, updateTime=1768456798957, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1218559392753041779, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149769458706723113, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1218559392753041780, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1149769458706723113, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=5976, endPage=5982, ext={EN=ArticleExt(id=1149769463035249627, articleId=1149769462573876181, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Properties and Combustion Kinetics of Coalchar through High-Temperature Internals-Regulated Pyrolysis, columnId=1172606851066774020, journalTitle=Science Technology and Engineering, columnName=Papers·Chemical Industry, runingTitle=null, highlight=null, articleAbstract=
In order to understand the properties of char which is the main byproduct of coal pyrolysis in the reactor with internals, especially the char prepared at high temperatures, the char samples were prepared by pyrolysis of Yulin bituminous coal under vacuum condition between 1 000 ℃ and 1 500 ℃ in the fixed-bed reactor with internals. The variations of pore structure, composition, calorific value, and carbon structure of chars with pyrolysis temperature were studied. The isothermal combustion characteristic and kinetics were investigated by MFBRA(micro fluidized bed reaction analyzer). The results show that the increase in pyrolysis temperature leads to a deeper degree of pyrolysis. As the pyrolysis temperature increases, the C content and C/H molar ratio of chars gradually increase, H and O contents of chars gradually decreases, and the calorific value increases slightly. The specific surface area and pore volume of chars firstly decrease with the increase of pyrolysis temperature, and then remain essentially constant after the pyrolysis temperature exceeds 1 300 ℃, which is consistent with the trend of graphitization degree. The three-dimensional diffusion model G(x)=[1-(1-x)1/2]2 can well describe the combustion process of chars. The activation energy and pre-exponential factor increase with the increase of pyrolysis temperature, and vary in the range of 30.49~90.17 kJ/mol and 0.69~352.25 s-1, respectively. The significant decrease in combustion reactivity of char prepared above 1400 ℃ is mainly due to the sharp increase of C/H.
, correspAuthors=Xue-jing LIU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Shuai XU, Hong ZHANG, Xue-jing LIU), CN=ArticleExt(id=1149769494987456990, articleId=1149769462573876181, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=内构件调控下高温热解煤焦理化性质与燃烧动力学, columnId=1172606851230351877, journalTitle=科学技术与工程, columnName=论文·化学工业, runingTitle=null, highlight=null, articleAbstract=为了认识内构件煤热解技术生成的主要副产物煤焦的性质,尤其是高温热解的煤焦,采用内构件热解反应器以榆林烟煤为原料于1 000~1 500 ℃真空条件下制备了煤焦,考察了煤焦孔结构、组成、热值、碳结构等理化性质随热解温度的变化规律,采用微型流化床反应分析仪研究了不同煤焦等温燃烧反应特性及动力学参数。结果表明,随着热解温度的增加,煤焦碳含量增加,氢和氧含量降低,C/H摩尔比升高,热值小幅度增加;煤焦比表面积和孔容先降低,但热解温度高于1 300 ℃后基本保持不变,石墨化程度与之变化趋势一致。煤焦燃烧过程可用三维扩散模型
G(
x)=[1-(1-
x)
1/2]
2描述,活化能和指前因子随热解温度的增加而升高,分别在30.49~90.17 kJ/mol和0.69~352.25 s
-1范围内变化,热解温度高于1 400 ℃后煤焦反应性大幅降低主要源于C/H的急剧增加。, correspAuthors=刘雪景, authorNote=null, correspAuthorsNote=
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徐帅(1999—),男,汉族,河南洛阳人,硕士研究生。研究方向:煤化工。E-mail:15940402153@163.com。
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Schematic diagram for pyrolysis reactors with internals and experiment system of char preparation, figureFileSmall=y+2zZGCEx2tw4+WghzGfNw==, figureFileBig=bdxSUFWvbUAr7Uw4olmYKQ==, tableContent=null), ArticleFig(id=1172984315450372852, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图1, caption=
制备煤焦的内构件热解反应器及实验装置示意图, figureFileSmall=y+2zZGCEx2tw4+WghzGfNw==, figureFileBig=bdxSUFWvbUAr7Uw4olmYKQ==, tableContent=null), ArticleFig(id=1172984315525870326, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.2, caption=
Schematic diagram for micro fluidized bed reaction analyzer, figureFileSmall=dp83oxzHdf+kJqe3WCdtxg==, figureFileBig=e31g5WU2DQLPQifsN/J/4Q==, tableContent=null), ArticleFig(id=1172984315605562104, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图2, caption=
微型流化床反应分析仪流程示意图, figureFileSmall=dp83oxzHdf+kJqe3WCdtxg==, figureFileBig=e31g5WU2DQLPQifsN/J/4Q==, tableContent=null), ArticleFig(id=1172984315664282362, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.3, caption=
Raman peak fitting of chars YLC1 000 prepared at different pyrolysis temperatures, figureFileSmall=sz3ugy6QYnhTdUvWTcMfPw==, figureFileBig=pmNHNdudCPcB9BK4r7AcKw==, tableContent=null), ArticleFig(id=1172984315743974140, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图3, caption=
煤焦YLC1 000的Raman光谱分峰拟合图, figureFileSmall=sz3ugy6QYnhTdUvWTcMfPw==, figureFileBig=pmNHNdudCPcB9BK4r7AcKw==, tableContent=null), ArticleFig(id=1172984315848831742, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.4, caption=
Variation of G peak to total peak area ratio with pyrolysis temperature, figureFileSmall=iN1WpBUR9nuUhTKC1mly7A==, figureFileBig=9WwjlYwyx7nTBtNU+3KPUA==, tableContent=null), ArticleFig(id=1172984315966272256, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图4, caption=
G峰与总峰面积比随热解温度的变化图, figureFileSmall=iN1WpBUR9nuUhTKC1mly7A==, figureFileBig=9WwjlYwyx7nTBtNU+3KPUA==, tableContent=null), ArticleFig(id=1172984316029186817, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.5, caption=
Variations of combustion conversion with reaction time in MFBRA, figureFileSmall=6W2XwQFDAJuwl2hr2gRdBQ==, figureFileBig=TydbYeWo58wbXvvxMwUpqQ==, tableContent=null), ArticleFig(id=1172984316108878594, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图5, caption=
MFBRA中煤焦的燃烧转化率随时间的变化, figureFileSmall=6W2XwQFDAJuwl2hr2gRdBQ==, figureFileBig=TydbYeWo58wbXvvxMwUpqQ==, tableContent=null), ArticleFig(id=1172984316184376068, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.6, caption=
Relationship between combustion reaction rate and conversion rate in MFBRA, figureFileSmall=Dfg1xSa682qtfqQRcIthKA==, figureFileBig=hm5/OLBUWq7zoQQzsSR+OA==, tableContent=null), ArticleFig(id=1172984316335371015, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图6, caption=
MFBRA中煤焦的燃烧反应速率与转化率的关系, figureFileSmall=Dfg1xSa682qtfqQRcIthKA==, figureFileBig=hm5/OLBUWq7zoQQzsSR+OA==, tableContent=null), ArticleFig(id=1172984316511531786, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.7, caption=
Comparision of combustion experiment and prediction data by three-dimensional diffusion model, figureFileSmall=9ZQInuAyBkM2w1aEw9VpMg==, figureFileBig=cBhcFeMwn/VbjRv9gBj6dw==, tableContent=null), ArticleFig(id=1172984316608000780, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图7, caption=
YLC1 000燃烧实验值与三维扩散模型拟合曲线, figureFileSmall=9ZQInuAyBkM2w1aEw9VpMg==, figureFileBig=cBhcFeMwn/VbjRv9gBj6dw==, tableContent=null), ArticleFig(id=1172984316779967246, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Fig.8, caption=
Fitting curves of lnk and 1/T for different chars, figureFileSmall=LFeYEckIptZypxppfXrnZw==, figureFileBig=iBFMGhvPhCQyVIaLnEv0Mg==, tableContent=null), ArticleFig(id=1172984316939350800, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=图8, caption=
煤焦燃烧速率与温度的拟合曲线, figureFileSmall=LFeYEckIptZypxppfXrnZw==, figureFileBig=iBFMGhvPhCQyVIaLnEv0Mg==, tableContent=null), ArticleFig(id=1172984317006459666, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Table 1, caption=
Proximate and ultimate analysis of Yulin bituminous coal
, figureFileSmall=null, figureFileBig=null, tableContent=
| 工业分析Wd/% | 元素分析Wd/% |
| V | A | FC | C | H | S | N | O① |
| 30.20 | 6.14 | 63.66 | 72.81 | 4.13 | 0.16 | 0.90 | 21.99 |
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榆林烟煤的工业分析与元素分析
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| 工业分析Wd/% | 元素分析Wd/% |
| V | A | FC | C | H | S | N | O① |
| 30.20 | 6.14 | 63.66 | 72.81 | 4.13 | 0.16 | 0.90 | 21.99 |
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Proximate, ultimate and calorific value analysis of chars pyrolyzed at different temperatures
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| 样品 | 工业分析Wd/% | 元素分析Wd/% | C/H | 热值/(MJ·kg-1) |
| V | A | FC | C | H | S | N | O |
| YLC1 000 | 3.55 | 8.56 | 87.89 | 86.00 | 0.77 | 0.17 | 0.88 | 12.18 | 9.32 | 29.15 |
| YLC1 100 | 3.31 | 8.62 | 88.07 | 86.71 | 0.66 | 0.15 | 0.93 | 11.55 | 10.89 | 29.38 |
| YLC1 200 | 3.48 | 8.98 | 87.54 | 87.28 | 0.59 | 0.11 | 0.98 | 11.05 | 12.37 | 29.57 |
| YLC1 300 | 2.98 | 8.87 | 88.24 | 87.03 | 0.49 | 0.14 | 0.90 | 11.45 | 14.74 | 29.47 |
| YLC1 400 | 2.47 | 8.29 | 89.24 | 88.45 | 0.40 | 0.11 | 0.81 | 10.23 | 18.38 | 29.96 |
| YLC1 500 | 2.30 | 8.53 | 89.17 | 89.00 | 0.31 | 0.14 | 0.71 | 9.84 | 23.66 | 30.14 |
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不同煤焦的工业分析、元素分析和热值
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| 样品 | 工业分析Wd/% | 元素分析Wd/% | C/H | 热值/(MJ·kg-1) |
| V | A | FC | C | H | S | N | O |
| YLC1 000 | 3.55 | 8.56 | 87.89 | 86.00 | 0.77 | 0.17 | 0.88 | 12.18 | 9.32 | 29.15 |
| YLC1 100 | 3.31 | 8.62 | 88.07 | 86.71 | 0.66 | 0.15 | 0.93 | 11.55 | 10.89 | 29.38 |
| YLC1 200 | 3.48 | 8.98 | 87.54 | 87.28 | 0.59 | 0.11 | 0.98 | 11.05 | 12.37 | 29.57 |
| YLC1 300 | 2.98 | 8.87 | 88.24 | 87.03 | 0.49 | 0.14 | 0.90 | 11.45 | 14.74 | 29.47 |
| YLC1 400 | 2.47 | 8.29 | 89.24 | 88.45 | 0.40 | 0.11 | 0.81 | 10.23 | 18.38 | 29.96 |
| YLC1 500 | 2.30 | 8.53 | 89.17 | 89.00 | 0.31 | 0.14 | 0.71 | 9.84 | 23.66 | 30.14 |
), ArticleFig(id=1172984317316838170, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Table 3, caption=
Pore structure of chars pyrolyzed at different temperatures
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 比表面积/ (m2·g-1) | 孔容/ (10-2cm3·g-1) | 平均孔径/nm |
| YLC1 000 | 79.10 | 5.250 | 2.656 |
| YLC1 100 | 53.10 | 3.530 | 2.660 |
| YLC1 200 | 35.60 | 3.114 | 3.502 |
| YLC1 300 | 16.10 | 1.793 | 4.464 |
| YLC1 400 | 19.90 | 2.362 | 4.744 |
| YLC1 500 | 16.50 | 2.250 | 5.453 |
), ArticleFig(id=1172984317400724252, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=表3, caption=
不同煤焦的孔结构
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 比表面积/ (m2·g-1) | 孔容/ (10-2cm3·g-1) | 平均孔径/nm |
| YLC1 000 | 79.10 | 5.250 | 2.656 |
| YLC1 100 | 53.10 | 3.530 | 2.660 |
| YLC1 200 | 35.60 | 3.114 | 3.502 |
| YLC1 300 | 16.10 | 1.793 | 4.464 |
| YLC1 400 | 19.90 | 2.362 | 4.744 |
| YLC1 500 | 16.50 | 2.250 | 5.453 |
), ArticleFig(id=1172984317451055901, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=EN, label=Table 4, caption=
Kinetic data for combustion of chars prepared at different temperatures
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 活化能/(kJ·mol-1) | 指前因子/s-1 | 相关系数 |
| YLC1000 | 30.49 | 0.69 | 0.99 |
| YLC1100 | 40.48 | 2.07 | 0.89 |
| YLC1200 | 45.60 | 3.49 | 0.93 |
| YLC1300 | 60.21 | 14.34 | 0.98 |
| YLC1400 | 61.13 | 15.55 | 0.93 |
| YLC1500 | 90.17 | 352.25 | 0.98 |
), ArticleFig(id=1172984317522359071, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1149769462573876181, language=CN, label=表4, caption=
不同煤焦的燃烧动力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 活化能/(kJ·mol-1) | 指前因子/s-1 | 相关系数 |
| YLC1000 | 30.49 | 0.69 | 0.99 |
| YLC1100 | 40.48 | 2.07 | 0.89 |
| YLC1200 | 45.60 | 3.49 | 0.93 |
| YLC1300 | 60.21 | 14.34 | 0.98 |
| YLC1400 | 61.13 | 15.55 | 0.93 |
| YLC1500 | 90.17 | 352.25 | 0.98 |
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