| 摘要 |
FIELD: afterburning products desulfurization in thermal power engineering. SUBSTANCE: method of desulfurization of afterburning products is realized by burning in furnace or boiler fire chamber of highly-sulfuric fuels with dope. Organic fuel, that has substances neutralizing sulfur oxides, for example, carbonate-bearing oil shales and brown low-ash coals, are used as ingredients of dope. Coals have higher, than initial fuel, calorific power, that provides given specific heat for mixture with initial fuel with dope burning, and has ash with a good share of oxides of alkaline and alkaline-earth metals. Ingredients of dope are prepared and introduced in boiler fire-box or furnace fire-chamber one by one or in different combinations with each other or with initial fuel. Besides, desulfurization is exercised with mole ratio of dope neutralizing substances to sulfuric oxides formed after initial fuel burning, that exceeds one. Desulfurization is exercised under temperature of afterburning product of 970 - 1460 K during step-by step burning of mixture components of initial fuel and dope. Method allows to increase effectiveness of afterburning products desulfurization, to decrease costs for dopes preparation and to provide given parameters of initial fuel with dope mixture. EFFECT: increased effectiveness of afterburning products desulfurization, decreased costs. |
