Preventing explosions in fuel preparation systems with ball drum mills and intermediate bunkers

Journal Article · Sat Oct 01 04:00:00 EDT 1977 · Sov. Power Eng. (Engl. Transl.); (United States)

OSTI ID:5060219

Efroimson, O A

Explosions of pulverized fuel which are possible in the fuel preparation systems of power station boilers may sometimes be accompanied by serious equipment failures, and in some cases by personnel injury due to hot pulverized fuel thrown from the safety valves and reflected from the walls and roof. ORGRES made special studies of the operation of 190 fuel preparation systems with ball drum mills and an intermediate bunker with air and gas-air drying of the fuel at 14 power stations and generalized the operational data of 56 more power stations with 620 such fuel systems. Supply of inert exhaust gases as the drying and ventilation agent in fuel preparation systems with ball drum mills and intermediate bunkers is the most effective means of preventing explosions in them with a non-explosive oxygen concentration (less than 16%) under all conditions. Most important in improving the explosion safety of fuel preparation systems is minimization of possible sites of fuel deposition. In new designs for fuel preparation quipment it is necessary to consider operating experience and modifications of individual elements at power stations which have given positive results in elimination of pulverized fuel deposits.

• OSTI ID: 5060219
• Journal Information: Sov. Power Eng. (Engl. Transl.); (United States), Journal Name: Sov. Power Eng. (Engl. Transl.); (United States) Vol. 6:10; ISSN SVPEA
• Country of Publication: United States
• Language: English

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