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企业化工蒸馏的安全操作与风险控防阐述
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作者 谢张林 季浩 《石油石化物资采购》 2020年第5期96-96,共1页
蒸馏作为分离混合物主要操作方式,在石油化工、炼焦化工等生产中应用较为广泛,通过化工蒸馏可以实现产品提纯和回收精制,实际操作中如果不严格遵照标准规范展开,蒸馏过程中出现火灾、爆炸等事故机率也会大大提高,并造成较大危害,加强化... 蒸馏作为分离混合物主要操作方式,在石油化工、炼焦化工等生产中应用较为广泛,通过化工蒸馏可以实现产品提纯和回收精制,实际操作中如果不严格遵照标准规范展开,蒸馏过程中出现火灾、爆炸等事故机率也会大大提高,并造成较大危害,加强化工蒸馏安全操作和风险防控十分有必要。本文也结合化工蒸馏事故风险,对蒸馏过程安全操作和风险防控进行详细阐述,以保证化工生产安全和稳定。 展开更多
关键词 化工蒸馏 安全操作 风险防控 探讨
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化工分子蒸馏设备及应用技术研究 被引量:3
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作者 范升东 《清洗世界》 CAS 2020年第12期83-84,共2页
化工分子蒸馏是一种使用广泛的蒸馏分离技术,与传统形式的蒸馏技术相比,具有纯度高、效率快等优点,在香料、药品蒸馏中使用较为广泛。基于此,文章首先阐述了分子蒸馏技术基本原理和特点,然后重点分析了分子蒸馏在精细化工中的应用,以期... 化工分子蒸馏是一种使用广泛的蒸馏分离技术,与传统形式的蒸馏技术相比,具有纯度高、效率快等优点,在香料、药品蒸馏中使用较为广泛。基于此,文章首先阐述了分子蒸馏技术基本原理和特点,然后重点分析了分子蒸馏在精细化工中的应用,以期为化工分子蒸馏的应用提供借鉴。 展开更多
关键词 化工蒸馏 应用技术 进展研究
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分子蒸馏技术及绿色精细化工的几点思考 被引量:4
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作者 尹有军 《中国新技术新产品》 2012年第10期2-2,共1页
精细化工作为现代化学工业的一个重要组成部分,它的发展在现代化学工业的发展过程中是十分重要的,而精细化工的发展与高新技术的发展是息息相关的,因此在目前国际倡导绿色化精细化工的政策之下,绿色精细化工的高新技术的推广和开发工作... 精细化工作为现代化学工业的一个重要组成部分,它的发展在现代化学工业的发展过程中是十分重要的,而精细化工的发展与高新技术的发展是息息相关的,因此在目前国际倡导绿色化精细化工的政策之下,绿色精细化工的高新技术的推广和开发工作是目前化学工业的首要任务之一。 展开更多
关键词 分子蒸馏 蒸馏技术:绿色精细化工
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绿色精细化工中的分子蒸馏技术探微
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作者 李同斌 《中国科技期刊数据库 工业A》 2016年第9期49-50,共2页
近年来,我国的化学工业得到了快速发展,而化工行业发展关注的一个重要议题就是分子蒸馏技术与绿色精细化工。如何在进行化工生产过程中,使生产的“绿色化”体现出,并且保证化工行业能够使精细化发展模式得以实现就是分子蒸馏技术必须考... 近年来,我国的化学工业得到了快速发展,而化工行业发展关注的一个重要议题就是分子蒸馏技术与绿色精细化工。如何在进行化工生产过程中,使生产的“绿色化”体现出,并且保证化工行业能够使精细化发展模式得以实现就是分子蒸馏技术必须考虑的一个要点内容。本文就分析和研究了这一问题,从而探讨了绿色精细化工环境下的分子蒸馏技术。 展开更多
关键词 分子蒸馏 蒸馏技术:绿色精细化工
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利用分子蒸馏技术再生废旧润滑油的应用 被引量:4
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作者 吴斌 《节能》 2008年第8期43-45,共3页
利用分子蒸馏技术再生废旧润滑油,是将废旧润滑油经过过滤,进入真空薄膜蒸馏脱除轻质组分汽柴油,剩余组分经分子蒸馏进行润滑油基础油的分离和重质杂质组分分离。分子蒸馏是远离沸点的分离,它优越于传统蒸馏利用沸点差来分离,它是在高... 利用分子蒸馏技术再生废旧润滑油,是将废旧润滑油经过过滤,进入真空薄膜蒸馏脱除轻质组分汽柴油,剩余组分经分子蒸馏进行润滑油基础油的分离和重质杂质组分分离。分子蒸馏是远离沸点的分离,它优越于传统蒸馏利用沸点差来分离,它是在高真空技术发展基础上的一个创新技术。采用分子蒸馏技术再生废旧润滑油,润滑油基础油收率高。 展开更多
关键词 分子蒸馏 化工蒸馏 废旧润滑油 润滑油 基础油
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利用分子蒸馏技术再生废旧轧制油 被引量:1
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作者 吴斌 阮孟法 《广东化工》 CAS 2008年第8期78-79,172,共3页
重点介绍化工分子蒸馏技术原理,它是利用不同分子自由程差别来实现分离,是远离沸点的分离,区别于传统的化工蒸馏采用不同物质的沸点差实现分离;它是在传统蒸馏和真空技术发展基础上的一个创新技术,废旧轧制油是铝带箔生产企业在使用中... 重点介绍化工分子蒸馏技术原理,它是利用不同分子自由程差别来实现分离,是远离沸点的分离,区别于传统的化工蒸馏采用不同物质的沸点差实现分离;它是在传统蒸馏和真空技术发展基础上的一个创新技术,废旧轧制油是铝带箔生产企业在使用中被润滑油、液压油、机械杂质、水污染更换下来的废油。文章重点介绍利用分子蒸馏技术在再生废旧轧制油方面的成功运用。 展开更多
关键词 分子蒸馏 传统化工蒸馏 轧制油 废旧轧制油
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板壳式热虹吸再沸器的传热性能研究
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作者 杨伟 吴云英 《内蒙古石油化工》 1996年第4期20-23,26,共5页
本文对板壳式换热器的换热元件(矩形窄缝流进)内的流动沸腾传热进行了实验研究。在热虹吸流程的实验装置中测量了流动沸腾传热系数。与传统的管壳式热虹吸再沸器相比,传热系数明显提高。传热恶化点的干度较大,便于设计成高效的热虹... 本文对板壳式换热器的换热元件(矩形窄缝流进)内的流动沸腾传热进行了实验研究。在热虹吸流程的实验装置中测量了流动沸腾传热系数。与传统的管壳式热虹吸再沸器相比,传热系数明显提高。传热恶化点的干度较大,便于设计成高效的热虹吸再沸器。 展开更多
关键词 流动沸腾 再沸器 传热性能 化工蒸馏
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Thermodynamic Analysis,Simulation and Optimization on Energy Savings of Ideal Internal Thermally Coupled Distillation Columns 被引量:3
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作者 刘兴高 马龙华 钱积新 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2000年第1期57-63,共7页
Internal thermally coupled distillation columns (ITCDIC) are the frontier of distillation energy saving research. In this paper, a novel energy saving model of ideal ITCDIC and a simulation algorithm are presented,upo... Internal thermally coupled distillation columns (ITCDIC) are the frontier of distillation energy saving research. In this paper, a novel energy saving model of ideal ITCDIC and a simulation algorithm are presented,upon which a series of comparative studies on energy savings with conventional distillation columns are carried out. Furthermore, we present an optimization model of ideal ITCDIC, which can be used to achieve the maximum energy saving and find the optimal design parameters directly. The binary system of benzene-toluene is adopted for the illustrative example of simulation and optimization. The results show that the maximum energy saving of ITCDIC is 52.25% (compared with energy consumption of conventional distillation under the minimum reflux ratio operation); the optimal design parameters are obtained, where the rectifying section pressure and the feed thermal condition are Pr=0.3006 MPa and q=0.5107 respectively. 展开更多
关键词 DISTILLATION thermal coupling energy savings SIMULATION OPTIMIZATION
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Influence of Steam Treating on Deethylating Type Isomerization Catalyst 被引量:1
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作者 Cao Ku Gu Haohui +3 位作者 Liang ZhanQiao Ruan Chi Liu Zhongxun Gui Shoux 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2005年第2期53-62,共10页
This article mainly worked on methods to reduce side reactions of the de-ethylating type catalyst for xylene isomerization. In laboratory the de-ethylating type catalyst for xylene isomerization was subjected to steam... This article mainly worked on methods to reduce side reactions of the de-ethylating type catalyst for xylene isomerization. In laboratory the de-ethylating type catalyst for xylene isomerization was subjected to steam treatment at different temperatures and durations to achieve dealumination of the ZSM-5 zeolite to some extent, which could affect the change in BrФnsted acid content to decrease xylene loss along with reduction of side reactions. Test results showed that the degree for reducing side reactions by steam treatment depended upon two important parameters-treating temperature and duration. The optimal condition required treating the catalyst at 500℃ for 8 hours. 展开更多
关键词 steam treating DEALUMINATION BrФnsted acid xylene loss
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Analysis of Current Status of Steam Cracking Feed Production and Measures for Maximization of Steam Cracking Feed 被引量:3
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作者 Chen Su 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2005年第2期41-46,共6页
In recent years China has seen speedy development of its ethylene industry. Compared to other advanced countries the per capita ethylene consumption in China is still low. With successive startup of grassroots ethylen... In recent years China has seen speedy development of its ethylene industry. Compared to other advanced countries the per capita ethylene consumption in China is still low. With successive startup of grassroots ethylene projects in China after 2006 and debottlenecking and expansion of existing ethylene units China will be confronted with the major issues related with increase of feedstocks for steam cracking. Naphtha is the main feedstock for producing ethylene, and the hydrocracked tail oil is increasing its share in the steam cracker feedstock pool over recent years. This article has analyzed the possibility for maximization of steam cracking feedstock and estimated steam cracker feedstock output based on processing 5 Mt/a of different crudes including the mixed crude transferred through Lu-Ning pipeline and Arabian light crude using corresponding process technologies at the refinery. 展开更多
关键词 steam cracking feed maximization of production measures
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A novel purification process for dodecanedioic acid by molecular distillation 被引量:6
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作者 余江 袁希钢 曾爱武 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第3期499-504,共6页
A novel purification process is involved to obtain the high purity[>99%(by mass)]dodecanedioic acid(DC_(12)).It involves a re-crystallization followed by molecular distillation from the crude product.The objective ... A novel purification process is involved to obtain the high purity[>99%(by mass)]dodecanedioic acid(DC_(12)).It involves a re-crystallization followed by molecular distillation from the crude product.The objective of this study is to investigate general conditions,feed rate,distilling temperature and vacuum,necessary for centrifugal distillation of DC_(12).Under the optimum conditions,distilling temperature 180℃,pressure 30 Pa and feed flow rate700 ml·h^(-1),the purity of DC_(12) in the residence reached 97.55%with a yield of 53.18%by the analysis of gas chromatography.Multiple-pass distillation made a considerable contribution by improving the purity to99.22%.Additionally,the effect of pretreatment(re-crystallization) on distillation process was revealed through a series of comparative experiments. 展开更多
关键词 Dodecanedioic acid Fermentation Purification Separation Molecular distillation
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Commercial Test of Two Diesel Demulsifiers
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作者 WangXiaohong 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2003年第4期37-42,共6页
PetroChina Lanzhou Petrochemical Company conducted commercial tests for application of two types of diesel demulsifiers, the HPL-2 and GX-02 demulsifiers, in order to solve the emulsion problem arising from caustic wa... PetroChina Lanzhou Petrochemical Company conducted commercial tests for application of two types of diesel demulsifiers, the HPL-2 and GX-02 demulsifiers, in order to solve the emulsion problem arising from caustic washing of straight-run diesel fraction obtained from atmospheric and vacuum distillation unit at the Lanzhou refinery. After addition of each demulsifier into the diesel fraction the oil content in caustic residue was apparently decreased, and discharge of waste caustic was reduced, resulting in the elimination of emulsification and a significant increase of economic benefits. When 70 ppm of the HPL-2 demulsifier was added to diesel fraction, the oil content in waste caustic exiting the second-stage caustic wash settling tank was reduced to 2.45% from 7.90 %, whereas this value was reduced to 2.81% from 5.96% with addition of the GX-02 demulsifier. 展开更多
关键词 diesel fuel EMULSIFICATION DEMULSIFIER caustic waste
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A New Procedure to Solve the Non-Linear Reaction-Diffusion Equation
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作者 吴燕翔 王良恩 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2000年第1期92-94,共3页
1 INTRODUCTIONThe concentration distribution of reactant in porouscatalyst pellet not only is the basis of calculating theeffectiveness factor,but also has a great significancein investigating the reaction and mass tr... 1 INTRODUCTIONThe concentration distribution of reactant in porouscatalyst pellet not only is the basis of calculating theeffectiveness factor,but also has a great significancein investigating the reaction and mass transfer in thecatalyst pellet.In principle,the concentration distri-bution and the effectiveness factor of a catalyst pelletcan be obtained by solving the reaction-diffusion equation.However,most of the differential equations haveno analytical solution except for some simple cases.The previous investigators have made great efforts to calculate the effectiveness factors of catalysts.They first obtained asymptotic solutions of effective-ness factor in the cases of the Thiele modulus φ→Oand φ→oo by means of perturbation method,thensynthesized the information of the asymptotic solu- 展开更多
关键词 reaction-diffusion equation SOLUTION similarity transformation perturbation analysis effectiveness factor
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