Advances In Naphtha Steam Cracking Torrent
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HomeApplied Mechanics and MaterialsAdvances in Energy Science and TechnologyStudies on Olefin Production by Steam Cracking of..
Natural gasoline, naphtha and gas oil. As recently as 2008, natural gasoline, naphtha and gas oil made up 30% of the steam cracker slate. As new ethane crackers come online in a few years, that weighting toward light feedstocks will only increase. At least that is the expectation. Advances In Naphtha Steam Cracking - Markit process economics program report 248a advances in naphtha steam cracking (december 2005) this pep report is designed to help clients better understand the technology changes that are being. 41, 6, 1419-1424. Thermal steam cracking of naphtha in packed bed reactors has been compared with cracking in an empty tube. A laboratory-scale packed bed reactor has been used to investigate the effects of inert and catalytic active materials on the steam cracking of naphtha.
Abstract:
Waste oil is an important part of the renewable energy, the main component is triglyceride that can be used to generate light olefins by steam cracking. The steam cracking feedstock is naphtha mixed with different proportions of waste oil, mainly in order to study the effect of different mixing ratio on the yield of ethylene, propylene and butadiene. In the case of the mixing ratio of naphtha and waste oil is 1:1, the optimum operating conditions are obtained: the steam cracking temperature is 775°C, the water- oil ratio is 0.65, the residence time is 0.4s.
Xiaochun Tang, Xiaohong Chen, Yuxiang Dong, Xiuguo Wei and Qingsheng Yang
L. Han et al., 'Studies on Olefin Production by Steam Cracking of Waste Oil Blended with Naphtha', Applied Mechanics and Materials, Vols. 291-294, pp. 738-743, 2013
[1] Chuanqin Ding, Shengli Chen, Chaohe Yang. Preliminary Study on Feasibility of Ethylene Production from Vegetable Oil by Steam Cracking, Advanced Materials Research, ICEESD2011(IN DEXED BY EI), 2012, Vols. 347-353.
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DOI: https://doi.org/10.4028/www.scientific.net/amr.347-353.3754
[2] Taoqi Mi, Hong Zhang, Zhifeng Liu: Status of Comprehensive Utilization on Waste Oil and Countermeasure Henceforth. Hangzhou Chemical Industry Vol. 4 (2010), pp.10-13.
[3] Xander Dupain, Daniel J. Costa, Colin J. Schaverien, etc. Cracking of a Rapeseed Vegetable Oil under Realistic FCC Conditions, Applied Catalysis B: Environmental Vol. 72(2006), p.44–61.
DOI: https://doi.org/10.1016/j.apcatb.2006.10.005
[4] Lei He, Chaohe Yang: Research Progress of Converting Vegetable Oil to Hydrocabons Under Catalytic Cracking Conditions. Petroleum Refinery Engineering Vol. 37 (2007), pp.21-24.
[5] Hua Tian, Chunyi Li, Chaohe Yang. Alternative Processing Technology for Converting Vegetable Oils and Animal Fats to Clean Fuels and Light Olefins. Chinese Journal of Chemical Engineering Vol. 16 (2008), pp.394-400.
DOI: https://doi.org/10.1016/s1004-9541(08)60095-6
Abstract: Asphalt ageing induced by heat, oxidation and ultraviolet (UV) radiation was investigated using various laboratory simulation ageing methods and outdoor ageing. One normal 70 penetration asphalt and its styrene-butadiene-styrene (SBS) modified asphalt were employed to assess the changes in chemical and rheological properties by infrared spectroscopy and dynamic shear rheometer under various ageing conditions, thus the relationship among rolling thin-film oven(RTFO), pressurized ageing vessel (PAV) and UV radiation ageing was distinguished. Experimental results showed that photodegradation caused by outdoor exposure UV ageing of 50~200µm thin films for a month, was found to be the most severe, following by PAV and then RTFO with respects to rehological and chemical changes. Photodegradation effect decreased as the thickness of asphalt film increases. Dynamic shear tests indicated that polymer networks were gradually destroyed during ageing, but the aged SBS modified asphalts still displayed better rheological properties than the corresponding base asphalt. The weight percent of oxygen as carbonyl increased and of SBS as butadiene decreased after ageing based on infrared spectrums. However, chemical and rheological changes were not generally consistent, and ageing susceptibility may be ranked differently when different evaluation methods were used.
Steam Cracking Process
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Abstract: Table tennis bat rubber was prepared by using natural rubber (NR) and butadiene rubber (BR). The effects of the blending ratio of NR and BR, contents of accelerator and sulfur on the performance of rubber racket were studied. The results showed that when under conditions of 160°C, 10min and 15MPa in the curing press, total amount of material is 100 phr .Including the NR/BR ratio was 0.65/0.35 (wt), the content was 90 phr the accelerator of DM/D ratio was 0.382/0.618, the content was 2.5 phr and the content of sulfur was 2.5 phr, the compound had a high vulcanization rate, an excellent physical and mechanical properties and aging performance.
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Abstract: In this paper ABS parts plus acrylonitrile monomer were prepared using melt blending method by twin-screw extruder, and the influence of soaking temperature, concentration of acrylonitrile monomer, ABS copolymer composition on the short-term migration of residual acrylonitrile monomer into pure water was studied, and the long-term migration behavior and diffusion coefficient were also further characterized.
455
Abstract: The paper shows the effect of butylenes concentration in feedstock on the process of dehydrogenation of butane into butylenes using chromia-alumina-potassium catalyst. Butylenes as contained 1 to 7 % wt. in butane slip completely without hindering the process of converting of butane.
Advances In Naphtha Steam Cracking Torrent 2017
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Abstract: In this paper, the conversion of biomass-derived glycolide to ethylene glycol over Cu was investigated. As a result, Cu showed significant catalytic role for the conversion of glycolide into ethylene glycol compared to other catalysts, such as Ni and Mo. A 24.3% yield of ethylene glycol was achieved in the process. The possible formation pathway of ethylene glycol from glycolide over Cu under hydrothermal conditions was proposed.
Naphtha Cracking Unit
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