Development of in-cycle systems for preparation and recycling of coal and coal-containing wastes

Golubev, Vadim A.; Platov, Ivan V.; Puzyrev, E. M.

doi:10.1063/5.0046612

Cited by 1 publication

(6 citation statements)

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“…Volatile and resins are used in block 25 to produce a marketable product -liquid furnace fuel. The fuel moisture vapor condenses in the heater 24, increasing the boiler efficiency by 2-5% [7,8]; at that, dry fuel or coke residue are fuel for generating thermal energy or steam.…”

Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%

“…A screw or scraper conveyor of a special design provides active mixing, good contact of fuel with the hot wall of the conveyor, and increased intensity of heat treatment. The scheme is applicable [7,8] when converting standard boilers 1 to non-rated, including using low-grade fuels by recycling or drying them in an installation located between the fuel hopper 6 and boiler 1. Also important is the direction of coal processing into special types of coke, shown in figure 6, [7,8] with the generation of thermal energy in the form of steam or hot coolant in a heat recovery boiler.…”

Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%

“…The scheme is applicable [7,8] when converting standard boilers 1 to non-rated, including using low-grade fuels by recycling or drying them in an installation located between the fuel hopper 6 and boiler 1. Also important is the direction of coal processing into special types of coke, shown in figure 6, [7,8] with the generation of thermal energy in the form of steam or hot coolant in a heat recovery boiler. The developed thermal-oxidative coking plants [7,8] are economical, environmentally efficient, provide high yield and quality of coke (figure 7), and have various versions depending on the types of raw materials used.…”

Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%

“…Also important is the direction of coal processing into special types of coke, shown in figure 6, [7,8] with the generation of thermal energy in the form of steam or hot coolant in a heat recovery boiler. The developed thermal-oxidative coking plants [7,8] are economical, environmentally efficient, provide high yield and quality of coke (figure 7), and have various versions depending on the types of raw materials used.…”

Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%

“…Prepared from coal in the unit (figure 5), the mass can be formed into briquettes and used as a special coke and/or a base for creating smokeless fuel briquettes. In experiments, high-quality, dense, durable briquettes were obtained from brown coal [8], shown in figure 8. Deep thermal contact recycling is a promising direction, as it allows organizing the efficient processing of not only high-quality but also low-grade coals, accumulated waste heaps, dumps from coal mining, and other carbon-containing waste.…”

Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%

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Integrated use of coal and coal-containing waste

Golubev

Platov

2022

J. Phys.: Conf. Ser.

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The current aggravation of such serious challenges as minimization of harmful emissions and suppression of the carbon footprint can be largely resolved through the more efficient and integrated use of fossil fuels with the accompanying production of additional products. Coals, including low-grade, carbon-containing, and vegetable waste, can be recycled into combustible gases, liquid fuels, and special types of coke, or smokeless fuel briquettes. On the other hand, this requires the development of new highly efficient technologies for the preparation, recycling, and use of fuels. The article discusses theoretical and experimental studies, and also presents schemes for thermal contact fuel preparation and recycling aimed at effective integrated use of fuels in standard boilers, and boilers with a circulating fluidized bed (CFB), or in special units with waste heat boilers. In CFB boilers, heat is transferred from the circulating particles to the processed fuel by direct thermal contact. In typical boilers, fuel preparation and recycling are carried out in conveyors with a heating jacket. Recycling of coals into special types of coke is carried out in a thermal-oxidative coking unit.

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Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%

Section: R(t/тоto)=exp-(t/тоto) N  or R(y)=exp-m(y) N mentioning

confidence: 99%