Utilization of industrial wastewater in production of coal-water fuel

Makarov, A. S.; Boruk, S. D.; Egurnov, Aleksandr Ivanovich; Dimitryuk, T. N.; Klishchenko, R. E.

doi:10.3103/s1063455x14040055

Cited by 25 publications

(13 citation statements)

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“…Êîàãóëÿöèîííûå âçàèìîäåéñòâèÿ íåïîñðåäñòâåííî îïðåäåëÿþò ðåîëîãè÷åñêèå ñâîéñòâà ÂÂÓÑ è çàâèñÿò îò êîíöåíòðàöèè äèñïåðñíîé ôàçû, ðàçìåðà ÷àñòèö, ýëåêòðîêèíåòè÷åñêîãî ïîòåíöèàëà, êîíöåíòðàöèè ñòàáèëèçèðóþùèõ è äèñïåðãèðóþùèõ äîáàâîê, ÏÀÂ [20][21][22][23].…”

Section: ôèçèêî-õèìè÷åñêèå îñíîâû ñîçäàíèÿ âóòunclassified

Prospects for the Development and Use of Water-Cooled Fuel (Review)

Makarov

2018

Energ. Tech. & Res. Sav.

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The perspective of obtaining fuels based on different degrees of metamorphism coals and organic waste has been considered. Coal-water fuel is a highly concentrated dispersed system consisting of a highly dispersed coal fraction and water with additives of plasticizers and stabilizers. Using these additives in the slurry gives possibility to reduce their viscosity, as well as to provide aggregative and sedimentation stability at higher concentrations of the solid phase. To ensure the ecological safety of combustion products in suspension, if it is necessary, products are added such as desulfurizers, corrosion inhibitors. The resulting slurry fuels are highly caloric and environmentally friendly. The suspension fuel caloric content can reach and even exceed the coal energy intensity. Due to this, as one of the components of dispersion medium industrial waste can be used. All harmful organic components decompose and burn at high temperatures (above 1200 °C). Bibl. 25.

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Section: ôèçèêî-õèìè÷åñêèå îñíîâû ñîçäàíèÿ âóòunclassified

Prospects for the Development and Use of Water-Cooled Fuel (Review)

Makarov

2018

Energ. Tech. & Res. Sav.

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“…The preparation of coal wastewater slurry (CWWS) not only saves fresh water but also efficiently treats and recycles high‐concentration wastewater that is difficult to biochemically process, which is a clean coal technology with both economic and environmental benefits 12 . Makarov et al verified that acidic and alkaline industrial wastewater, and wastewater containing alcohol as a dispersion medium can all be used for CWS preparation 13 . Wang et al used coking wastewater to prepare CWS and indicated that the maximum slurrying concentration for coal coking wastewater slurry is increased by 0.8% compared with ordinary CWS 14 .…”

Section: Introductionmentioning

confidence: 99%

“…12 Makarov et al verified that acidic and alkaline industrial wastewater, and wastewater containing alcohol as a dispersion medium can all be used for CWS preparation. 13 Wang et al used coking wastewater to prepare CWS and indicated that the maximum slurrying concentration for coal coking wastewater slurry is increased by 0.8% compared with ordinary CWS. 14 Tu et al reported that ammonia nitrogen in coal chemical wastewater can influence the adsorption of additives and lead to a higher apparent viscosity and better stability for the slurry.…”

Section: Introductionmentioning

confidence: 99%

Study on CO₂ gasification properties of coal gasification wastewater slurry

Liu

Wang

et al. 2021

Asia-Pacific J Chem Eng

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Coal water slurry technology and gasification technology are used to simultaneously treat wastewater and CO2; coal water slurry is prepared from fixed‐bed coal gasification wastewater; and then, thermogravimetric analysis, Fourier‐transform infrared spectrometry, scanning electron microscopy, energy‐dispersive spectrometry, and X‐ray diffraction are used to analyze the characteristic parameters of CO2 gasification and the products that formed. The results reveal the following: (a) compared with coal water slurry, coal gasification wastewater slurry shows decreases in the gasification start temperature, gasification weight loss peak temperature, and gasification end temperature of 12°C, 22°C, and 17°C, respectively, and shows increases in the maximum and average reaction rates. In addition, the reactivity index for coal gasification wastewater slurry is found to be 14.29% higher than that for ordinary coal water slurry. (b) Coal gasification wastewater slurry produces more methane and other aliphatic hydrocarbon gases in the pyrolysis stage and more CO in the coke gasification stage than coal water slurry. (c) Coal gasification wastewater slurry contains many small particles and flocs on the surface of the coal and a high Na content (up to 8.07%) in the microarea. In addition, a richer pore structure exists on the surface of the gasification residue of the coal gasification wastewater slurry. (d) The components of the gasification residue for coal gasification wastewater slurry show relatively larger changes. Moreover, the catalytic effect of alkali metal may be weakened due to the reaction of the minerals in the coal to form a complex.

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“…Moreover, it does not control the release of environmentally dangerous volatile decay products into the atmosphere. Simple filtration, adsorption, electrofiltration, forced oxidation and some other technologies are tested and used widely to increase the efficiency of the oil-production wastewater treatment [4][5][6][7][8][9]. It should be emphasized that some porous wastes or byproducts of the coal refinery are considered as promising adsorbents for such technologies [5,7].…”

Section: Introductionmentioning

confidence: 99%

“…Simple filtration, adsorption, electrofiltration, forced oxidation and some other technologies are tested and used widely to increase the efficiency of the oil-production wastewater treatment [4][5][6][7][8][9]. It should be emphasized that some porous wastes or byproducts of the coal refinery are considered as promising adsorbents for such technologies [5,7]. Based on the nature and properties of the water pollution agents present in this type of wastewater, it is expected that adsorbents with hydrophobic or mosaic surface structure should exhibit a comparatively high pollution extraction activity.…”

Section: Introductionmentioning

confidence: 99%

Cleaning the Vegetable Oil Production Wastewater With Anthracite

Boruk¹,

Winkler²,

Mischenchuk³

2021

FENS

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The efficiency of anthracite treatment of the wastewaters formed at the sunflower oil production is investigated and discussed in comparison with other water cleaning technologies. It is found that a comparatively small amount of anthracite (10-15 % of the wastewater mass) ensures efficient decontamination and eliminates up to 70 % of the wastewater pollutants. This method does not require any extensive changes in the production technology and can easily be incorporated at the existing production facilities. This efficiency is based on the double-nature structure of the anthracite surface, consisting of the hydrophilic and hydrophobic areas. The former ones ensure a high wettability of the adsorbent and the release of some inorganic ions that provide coagulation of the emulsified contaminants. The latter ones ensure adsorption and extraction of the dissolved and emulsified organic pollutants of the wastewater. The used adsorbent can be filtered out after the extraction and then disposed of in an environmentally safe way through incineration as an admixture to the regular coal fuel.

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Utilization of industrial wastewater in production of coal-water fuel

Cited by 25 publications

References 0 publications

Prospects for the Development and Use of Water-Cooled Fuel (Review)

Prospects for the Development and Use of Water-Cooled Fuel (Review)

Study on CO₂ gasification properties of coal gasification wastewater slurry

Cleaning the Vegetable Oil Production Wastewater With Anthracite

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Utilization of industrial wastewater in production of coal-water fuel

Cited by 25 publications

References 0 publications

Prospects for the Development and Use of Water-Cooled Fuel (Review)

Prospects for the Development and Use of Water-Cooled Fuel (Review)

Study on CO2 gasification properties of coal gasification wastewater slurry

Cleaning the Vegetable Oil Production Wastewater With Anthracite

Contact Info

Product

Resources

About

Study on CO₂ gasification properties of coal gasification wastewater slurry