Influence of rotary disk configurations on droplets characteristics in molten slag granulation for waste heat recovery

Peng, Hao; Shan, Xuekun; Kang, Jingqi; Ling, Xiang; Wang, Dongxiang

doi:10.1016/j.applthermaleng.2018.02.063

Cited by 32 publications

(9 citation statements)

References 31 publications

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“…In recent studies unmodified rosin was used for making films, coatings and adhesives [26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42], biomedical applications [43,44,45,46,47,48,49,50,51,52,53,54,55], or in mining, metallurgy and construction [56,57,58] and for filler purposes [59,60,61,62,63,64]. However, chemical modification of rosin gives many-fold greater possibilities of using this raw material, which are described in the next, main section of this article.…”

Section: Basic Information About Rosinmentioning

confidence: 99%

Advances in Rosin-Based Chemicals: The Latest Recipes, Applications and Future Trends

et al. 2019

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A comprehensive review of the publications about rosin-based chemicals has been compiled. Rosin, or colophony, is a natural, abundant, cheap and non-toxic raw material which can be easily modified to obtain numerous useful products, which makes it an excellent subject of innovative research, attracting growing interest in recent years. The last extensive review in this research area was published in 2008, so the current article contains the most promising, repeatable achievements in synthesis of rosin-derived chemicals, published in scientific literature from 2008 to 2018. The first part of the review includes low/medium molecule weight compounds: Especially intermediates, resins, monomers, curing agents, surfactants, medications and biocides. The second part is about macromolecules: mainly elastomers, polymers for biomedical applications, coatings, adhesives, surfactants, sorbents, organosilicons and polysaccharides. In conclusion, a critical evaluation of the publications in terms of data completeness has been carried out with an indication of the most promising directions of rosin-based chemicals development.

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Section: Basic Information About Rosinmentioning

confidence: 99%

Advances in Rosin-Based Chemicals: The Latest Recipes, Applications and Future Trends

et al. 2019

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“…Therefore, recycling slag sensible heat is particularly important for energy conservation and CO 2 emission reduction. Currently, slag waste heat recycling technologies mainly include physical methods or chemical methods. , The former were widely proposed, such as mechanical crushing methods, , air blast methods, and centrifugal granulated methods, − which could achieve a better granulation effect but their heat conversion efficiency was lower than 65%. , To elevate this value, chemical methods, such as methane reforming, − coal gasification, − and waste gasification, − emerged. Previous studies on the first two methods have been reported, which showed that the exergy loss was 15% for methane steam reforming system collaborating RCA granulation , and 409 MJ·t –1 slag for the coal gasification system .…”

Section: Introductionmentioning

confidence: 99%

Feasibility Evaluation of the Terminated Waste Energy In Situ Conversion Strategy toward Carbon Neutralization in Metallurgical Processes

Dong

Zhang

Wei

et al. 2021

ACS Sustainable Chem. Eng.

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Integrated consideration of carbon dioxide reduction, terminated energy conversion, and resourceful disposal of wastes like plastics broadens a new horizon for green metallurgical processes. Here, a chlorine-free plastic gasification process in situ utilizing converter slag and flue gas heat was proposed as an example, and this complicated system's superiority was comprehensively evaluated in terms of syngas preparation efficiency and carbon dioxide reduction depth through thermodynamics. Specifically, the effects of process parameters such as temperature, pressure, and H 2 O/P, CO 2 /P, and SS/P ratios on both were discussed in detail; moreover, two sets of theoretical operation conditions were explored for the maximum syngas preparation efficiency or carbon dioxide reduction. Furthermore, the effects of waste plastics and the gasification agent amount on reaction system heat balance were discussed when the H 2 /CO ratio in syngas gas was 3:1 or 2:1 for CH 4 or CH 3 OH preparation, respectively, for the purpose of terminated product quality regulation. The results showed that H 2 and CO yields and the CO 2 conversion rate increased as the temperature increased but decreased as the pressure increased, H 2 yield was promoted by the H 2 O/P ratio instead of CO yield and the CO 2 conversion rate, and the CO 2 /P ratio had a positive effect on CO yield but not on H 2 yield and the CO 2 conversion rate; CH 4 and CaCO 3 yields increased as the SS/P ratio increased. Meanwhile, chlorine-free plastic consumption increased as the temperature increased, and less gasification agent was needed. However, this system had the maximum syngas yield, namely, 44.82−64.13% H 2 and 88.88−135.69% CO when temperature, pressure, and H 2 O/P, CO 2 /P, and SS/P ratios were 800−1000 °C, 1.0 atm, 1−2.0, 1.2−3.0, and 1.0, respectively; with respect to CO 2 reduction efficiency, capacity ranging from 75.17 to 90% can be obtained when 800−1000 °C, 1.0 atm, 0−0.8, 0.4− 1.2, and 1.0 were adopted. Definitely, the strategy of in situ converter slag and flue gas heat conversion utilizing chlorine-free plastics was indeed feasible for industrial application.

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“…The rosin/paraffin mixture was utilized as working medium by Zhu et al, [ 14 ] Dhirhi et al, [ 15 ] and Peng et al. [ 16,17 ] They found that both the increase in rotating speed and the decrease in liquid volume flow rate all resulted in the decrease in obtained particles diameter. Different from the granulation of nonphase change fluid, a lot of fibers were produced during the slag droplets formation process with the rosin/paraffin mixture.…”

Section: Introductionmentioning

confidence: 99%

A Novel Stacked Rotary Cup Atomizer Toward Efficient Centrifugal Granulation of Molten Blast Furnace Slag

Tan

Zhu

Wang

et al. 2021

steel research int.

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Atomizer is one of the most important facilities in molten slag centrifugal granulation heat recovery system, which concerns the heat recovery rate of the system as well as the quality of slag particles. Aim to large slag flow rate in industrial application, a novel stacked rotary cup atomizer (SRCA) is proposed to achieve high‐quality centrifugal granulation performance. The authentic molten slag is adopted as working medium and the centrifugal granulation phenomena are visually investigated including the molten slag fragmentation on the surface of atomizer and the impacting of slag droplets on the water cooled wall. A film perforation fragmentation mode is found in the experiments under high slag flow rate. The granulated particle size distribution, average particle size, and slagging mass fraction produced by the atomizer are obtained. Moreover, the granulation performances of the SRCA with divergent structures are tested. The results demonstrate that the SRCA has excellent granulation performance in large slag flow rate to produce smaller particles and suppress slagging. Comparing with the typical rotary cup atomizer, the largest decrement in average particle size and slagging mass fraction for the SRCA is ascertained as 28.1% and 71.1%, respectively.

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Influence of rotary disk configurations on droplets characteristics in molten slag granulation for waste heat recovery

Cited by 32 publications

References 31 publications

Advances in Rosin-Based Chemicals: The Latest Recipes, Applications and Future Trends

Advances in Rosin-Based Chemicals: The Latest Recipes, Applications and Future Trends

Feasibility Evaluation of the Terminated Waste Energy In Situ Conversion Strategy toward Carbon Neutralization in Metallurgical Processes

A Novel Stacked Rotary Cup Atomizer Toward Efficient Centrifugal Granulation of Molten Blast Furnace Slag

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