Thermal Insulation Properties of Wood Polymeric Sand Composite

Стородубцева, Тамара; Aksomitny, A.A.; Sadrtdinov, A.

doi:10.4028/www.scientific.net/ssp.284.986

Cited by 13 publications

(7 citation statements)

References 23 publications

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“…Comparative analysis shows a slight discrepancy between the data, but the general nature of the formation of gas mixture components is similar for all [27][28][29][30][31][32]. It can also be noted that at an average process temperature of 1200°C, the calculation shows a greater amount of combustible components in the gas mixture.…”

Section: Resultsmentioning

confidence: 88%

Efficiency of biomass and solid waste energy processing based on the cogeneration plant with plasma heat source

et al. 2019

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The urgency of the use of low-grade organic fuels and wastes, in particular municipal solid (MSW), is due to recent developments in energy saving and energy efficiency. This directly relates to the direction of renewable energy, responsible for involving all wastes, such as MSW, in fuel energy balance to provide heat and electricity to decentralized power supply areas. This paper presents the process of hightemperature thermal decomposition of MSW in the steam-air medium of plasma under excessive pressure to generate electrical energy. The high enthalpy and great reactivity of the plasma gasifying agent makes it possible to carry out the process of thermal decomposition in the autothermal mode. The high-temperature mode and the use of plasma blast provides a high degree of conversion of waste into combustible components (CO, CH4, H2), the resulting gas mixture. The technological process significantly reduces the formation of potentially hazardous substances that affect the kinetics of the process. After generating electrical energy, the exhaust gases are subjected to complex purification from the products of combustion and cogeneration of residual thermal energy. In particular, purification from toxic nitrogen oxides (NOx) occurs, the formation of dioxins, furans and other dangerous derivatives of chloride compounds is prevented. Thermal energy, discharged at various sites of the plant, is almost completely used for the needs of the cogeneration plant and its units, which allows to achieve a total efficiency of at least 86%. The ability of the cogeneration plant to work on various types of solid waste gives a wide range of applications and operational capabilities.

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Section: Resultsmentioning

confidence: 88%

Efficiency of biomass and solid waste energy processing based on the cogeneration plant with plasma heat source

et al. 2019

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“…The actual gas velocity should coincide with the calculated one or exceed it by no more than 8% [21][22][23][24][25][26][27][28][29][30].…”

Section: Wd = Qv/smentioning

confidence: 76%

Simulation of the process of grinding and transporting organic waste in an activated carbon production unit

Safin,

Sotnikov

2023

E3S Web Conf.

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Today, the processing of organic waste, such as wood chips, technological chips, sawdust, sunflower husks, car tires, walnut shells, seeds of various vegetables and fruits, is becoming more and more popular. The industry is developing promising devices for waste processing with subsequent production of useful products for economic activity. Along the way, the question arises of grinding and transporting these wastes to the place of their processing. In particular, for an installation for the production of activated carbon from bulk waste, it is necessary to design grinding and transportation zones. In the work, on the basis of the selected grinder, a pneumotransport unit for feeding crushed organic waste to an activated carbon production unit was modeled. Mathematical modeling of the waste transfer process has been carried out, which makes it possible to determine the rational parameters of the raw material preparation zones. An algorithm for calculating a vertical pneumatic transport system has been developed, which can be used to calculate technological processes associated with the need to supply and subsequent vertical transportation of raw materials. Dependences were obtained: the speed of soaring on the bulk density of particles, the results of which revealed a significant effect of the thickness of the particle on its speed of soaring in the pneumatic pipeline, as well as the dependence of the diameter of the pipeline on the volumetric flow rate and type of raw material, which demonstrated an increase in the diameter of the pipeline with a decrease in the bulk particle density. The results of these dependencies can be used in the creation or modernization of vertical pneumatic transport systems designed for small volumes of transported raw materials.

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“…6-16. 2 Лесовик В.С. Повышение эффективности производства строительных материалов с учетом генезиса горных пород.…”

Section: Introductionunclassified

“…Переход к композиционным вяжущим -это крупный шаг вперед в материаловедении вяжущих веществ, будущее технологий строительных материалов с управлением процессами структурообразования 3 [2,3,4,5,6].…”

Section: Introductionunclassified

Polymineral Composite Binders for Foam Concrete: Features of Hydration and Hardening

Voronov

Glagolev

2020

Vestn. SibADI

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Introduction. The paper devotes to the features of hydration and hardening of polymineral composite binders. The authors carry out the complex research of the phase composition, hydration and structure formation processes of hardened composite binders with active mineral additives by X-ray phase analysis, differential scanning calorimetry and electron microscopy. The study using a Tescan MIRA 3 scanning electron microscope reveals differences in the microstructure of hardened binders and the authors confirm the results by microprobe studies. The authors study the hydration of the composite binder prepared on the basis of Portland cement and mineral components. Moreover, the paper demonstrates the dynamics of the system’s heat dissipation from the moment of mixing with water and hardening up to 24 hours and up to 72 hours by the expressed bond of dQ / dt = f (t) using a differential calorimeter.Methods and materials. The authors carried out experimental studies at Belgorod State Technological University named after V.G. Shukhov, at the Department of Building Materials, Products and Structures, at the High Technology Center and “BelGTASM-Certificate” Test Center. Therefore, the authors used the existing basic research methods, including modern physicochemical methods of analysis: X-ray phase, scanning electron microscopy, etc. The paper determined the main characteristics of raw materials, composite binders and foam concrete using standard methods and regulatory requirements.Results. The authors obtained the results that testified the peculiarities of hydration and hardening processes of polymineral composite binders on the basis of Portland cement and mineral additives: opoka marl and fly ash.Conclusion. The research establishes the hydration and hardening processes of polymineral composite binders. As a result, the authors demonstrate that the opoka marl introduced into the cement leads to the increased hydration in the induction and accelerated periods and also increases the hydration completeness of the main clinker minerals due to the manifestation of the pozzolanic reaction and the active binding of blocking Portlandite, as well as to the higher concentration of accumulated neoplasms, second generation calcium hydrosilicates.Financial transparency: the authors have no financial interest in the presented materials or methods. There is no conflict of interest.

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Thermal Insulation Properties of Wood Polymeric Sand Composite

Cited by 13 publications

References 23 publications

Efficiency of biomass and solid waste energy processing based on the cogeneration plant with plasma heat source

Efficiency of biomass and solid waste energy processing based on the cogeneration plant with plasma heat source

Simulation of the process of grinding and transporting organic waste in an activated carbon production unit

Polymineral Composite Binders for Foam Concrete: Features of Hydration and Hardening

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