Тип публикации: статья из журнала
Год издания: 2016
Идентификатор DOI: 10.1134/S0040601516120107
Ключевые слова: boiler, boiler startup without heavy oil, brown coal, heated airflow, Air, Boilers, Coal, Crude oil, Energy utilization, Heavy oil production, High speed cameras, Ignition, Lignite, Particle size, Pulverized fuel, Thermocouples, Video cameras, Convective heating, Experimental research, Fuel preparation, heated airflow, High speed video cameras, Ignition delay time, Low energy consumption, Pulverized coals, Coal dust
Аннотация: Experimental research of conditions and characteristics of ignition of the pulverized coal (with a particle size of approximately 80 ?m) of different-type brown coals (1B, 2B, and 3B) during convective heating by a heated airflow (at a temperature of 425–600°С and velocity of 1–5 m/s) is carried out. The use of low-inertia thermocouples, a high-speed video camera, and dedicated software has made it possible to determine the minimum oxidizer parameters needed for coal dust ignition, and the approximation dependences of a main characteristic of the process under study?ignition delay time?on the air temperature. Results of experimental studies provide a basis for developing an optimal scheme of the boiler startup without heavy oil, which differs from the known schemes by the relatively low energy consumption for fuel-burning initiation. By example of the BKZ 75-39FB boiler, the economic usefulness of applying the boiler startup without heavy oil is shown. This scheme can be implemented using the proposed ignition burner that functions as a part of the direct system of pulverized-fuel preparation. © 2016, Pleiades Publishing, Inc.
Журнал: Thermal Engineering
Выпуск журнала: Vol. 63, Is. 12
Номера страниц: 870-875
ISSN журнала: 00406015
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- Scopus (цитирований 1)
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