SU1451465A1 - Boiler plant - Google Patents

Abstract

The invention relates to the combustion of fuel and can be used on thermal power plants. The purpose of the invention is to increase efficiency by intensifying combustion and increasing the degree of fuel preparation. The boiler unit contains a boiler 1 with an air duct 2 and a firebox (T) 3, equipped with main and discharge burners 4 and 5, an additional dryer 10, a gas dryer 12 connected by a gas duct 13 to T 3, a fan mill 14 with a separator 15 and dust

Description

one

The invention relates to the burning of top power and can be used in thermal power plants.

The aim of the invention is to increase the economy by intensifying combustion and increasing the degree of fuel preparation.

The drawing shows the boiler unit.

The boiler unit contains a boiler 1 with an air duct 2 and a firebox 3, equipped with main and discharge burners 4 and 5, and a dust preparation system equipped with successively located raw fuel bunker 6 with a feeder 7, in flow 8 of which a flasher 9 is installed, additional dryer 10, a tournament x gyim shutter 11, a gas dryer 12 connected by a gas duct 13 to the furnace 3, a fan mill 14 with a separator 15 and a dust concentrator 16. The separator 15 with return chute 17 is connected to the gas dryer 12. The main burner 4 of the furnace 3 is made in three channels Central, middle, and peripheral channels 18, 19, and 20. Channels 18, 19, and 20 can be equipped with swirlers 21. Dust concentrator 16 has connections 22 and 23, respectively, discharging the concentrated mixture and discharging the lightly polluted agent. The outlet 23 for removing the slightly dusty agent of the dust concentrator 16 is connected to the waste burner 5, and the outlet 22 for withdrawing the concentrated mixture to the central channel 18 of the main burner 4. The additional dryer 10 is made conical and provided with a lower inlet tangential nozzle 24 and an upper output tangential nozzle 25. The inlet the pipe 24 of the dryer 10 is connected by a pipe 26, equipped with a shut-off and regulating body 27, with the air duct 2, and

0 outlet 25 - pipe 28, equipped with a shut-off and regulating body 29 with a middle channel 19 of the burner 4. The peripheral channel 20 of the burner 4 is connected to the duct 2. The pipe 28 and the air duct 2 are interconnected by a pipe 30, equipped with a shut-off valve, an organ 31 , and the flue 13 and pipeline 26 - pipeline 32 with shut-off and regulating authority 33.

The boiler unit works as follows.

The wet fuel from the bunker 6 is fed by the feeder 7 through the fuel chute 8 to the cone dryer 10. At the same time, from the duct 2 through the pipe 26 through the nozzle 24 to the lower part of the dryer 10 hot air is supplied. In counter-movement of moist fuel and hot air in the dryer 10, the fuel is partially dried. Spent drying agent (moist air)

five

1451465

34

Claims (1)

together with the smallest, driest parts, the warmth of hot air. Shut-off pipes of fuel through regulating bodies 27 and 29 are disconnected and pipe 28 enters the middle swing of the dryer 10. At the same time, through the pipe 19 of the main burner 4 and further to the top wire, hot air is fed to the middle ku 3, where the combustion of dust in the channel 19 of the main burner 4. When feeding flare. The main part of the pre-dust extraction system for fuel from dried coarse particles from lower-humidity below the calculated value of the center part of the conical dryer 10 through the addition of hot air to the gas curtain gate 11, the flow of which 13 by conduit 32 is synchronized with the fuel supply by the feeder 7 enters the dryer 12, to which the claims of the invention through the duct 13 from the furnace 3 are fed high-temperature flue gases from the boiler house, containing the boiler with a fan-mill 14. The s-duct and the firebox equipped with the main shilk 12 dry the fuel with a waste burner and a downhole radiator in an inert high-15 cooking, equipped with a consistent temperature environment. Next, the fuel located by the raw fuel bunker with the mixture goes to the inlet of the mill-valve by a feeder, a gas dryer, a switch 14, in which a separate gas duct is carried out to the furnace, a mill-fan - a mole of fuel and its drying. By a pressure head, a separator and a dust concentrator created by the fan mill 14, the outlet pipe of the concentrated mixture dust and gas flow is directed to sepa-20 of which is connected to the main burner 15, where the non-furnace discharge occurs, and the outlet pipe of weakly dusty ground grinding fractions and the agent to the waste burner, pumping them through the return chute 17, so that, in order to increase the eco-grinding in the grinder-fan of the 14th parity by intensifying the combustion and and it enters 25 to increase the degree of fuel preparation, the core in the dust concentrator 16, in which the original burner of the firebox is made of a three-part separation of the air mixture flow. In the central channel to which the current with high dust content is connected, the outlet nozzle is concentrated with a small amount of the inert mixture treated with a dust concentrator, and the periphery drying agent is fed through a patric one connected to the air duct, while cutting 22 in the central duct 18 of the main-30 dust preparation system is equipped with an additional burner 4 and further to the furnace 3, a drying dryer and a turnstile shutter, where dust is burned in the torch.placed between the bunker feeder. a-kera of raw fuel and a gas-dried drying agent with a small one, and an additional dryer, which is the thinnest dust, is conveyed with a lower tangential dust into the waste burner 5 and burned in the top-35 inlet pipe connected to the dog 3. When fed into the dust extraction system, and the upper tangential exit-preparation of the fuel of the calculated moisture content by a branch pipe connected to the middle one, reduces the need for an additional sushi channel of the main burner of the furnace.