SU1617246A1 - Boiler plant - Google Patents

Abstract

The invention relates to energy, and can be used in gasified boilers and aims to increase efficiency by improving the quality of decarbonization and cost effectiveness. For this, the calciner (D) 10 is placed in a contact economizer (E) 5 between the nozzle 8 and the pallet 9 and is connected by a nozzle 11 for supplying air to the duct (B) 2 behind the contact air heater (KV) 3, and the nozzle 12 for discharge of the steam is connected to E 5 in the zone between the water distributor 7 and the nozzle 8. The air heated and humidified in the HF 3 is supplied through the B2 to the boiler 1, from where the products of combustion with the water vapor contained in them are sent to the E. 5. Part of the warm saturated air after the HF is removed from the B2 and is fed to D 10, which improves mass transfer. Evaporation D 10 and gases cooled in O 5 is discharged from the unit by a smoke exhauster. 28. 1 sludge.

Description

The invention relates to energy and can be used in gasified boilers.

The purpose of the invention is to increase efficiency by improving the quality of decarbonization and economy.

The drawing shows a schematic diagram of a boiler plant.

The boiler plant contains a boiler 1, connected at the inlet by a duct 2 with a contact air heater 3, and at the outlet with a gas flue 4 with a contact economizer 5, equipped with a drip catcher 6, a water distributor 7, a layer of nozzle 8 and a pallet 9, and also placed in a contact economizer 5 between the nozzle 8 and the pallet 9 decarbonizer 10, equipped with nozzles 11 and 12 of the air supply and exhaust vapor.

connected respectively to the duct 2 behind the contact air heater 3 along the air path and to the economizer 5 in the gas path area between the water distributor 7 and the nozzle 8. According to the source water (condensate), the calciner 10 is connected to the economizer volume 5 by means of a hydraulic lock 13.

The installation also contains supply and exhaust lines 14 and 15 of boiler 1 connected to heat consumer 16, surface heat exchangers 17-19 included in the irrigation circuits of contact heaters 3 and economizer 5, lines 20 and 21 for supplying tap water and discharging blow-down water, respectively network, circulation and feed pumps 22, 23 and 24, condensate tank 25, deaerator 26. Installation can contain 5

yo

"

about

press the air fan 27 and the exhaust fan 28.

Boiler installation works as follows.

Combustion products after boiler 1 enter the contact economizer 5, where water is heated, simultaneously filling it with CO2. The heated water through the overflow pipes of the water seal 13 is fed to the decarburizer 10, where CO2 is removed from it during the treatment with a counter-flow of air.

In connection with the supply to the calciner 10 of warm saturated air, the temperature of the wet thermometer which is close to the temperature of the water being treated, the temperature of the water does not decrease during the decarbonization process. Further, this water passes through heat exchangers 18 and 19, is cooled and returned to contact economizer 5.

The water cooled in the air preheater 3 is pumped sequentially through heat exchangers 18 and 17, where it is heated to the desired temperature and returned to the air preheater 3.

To remove salts from the water circuit of the contact air preheater 3, this circuit is blown through line 21. The water evaporated in the contact air heater 3 and the water removed by blowing is supplied with water from the water supply line 20. The water of the hot water system is heated in the heat exchanger 19.

The air in the contact air heater 3 is supplied from the atmosphere either by the dilution created in the air and gas paths by the smoke exhauster 28, or, if the pressure of the latter is not enough, by switching on an air blower 27 that creates an additional pressure. The air heated and heated in the contact air heater 3 is fed through the air duct 2 to the boiler 1, from which the combustion products with the water vapor contained in them are sent to the contact economizer 5. The condensate (desalted water) released from the combustion products after they are deeply cooled contact economizer 5 blows from the latter through the calciner 10, the pallet 19 and the stock tank 25

condensate, from where the condensate is supplied to deaerator 26 and further to feed the heating path of the heating network (line 14).

Part of warm saturated air after

contact air heater 3 is withdrawn from duct 2 and fed through pipe 11 to calciner 10. Warm air supply improves mass transfer to calciner 10. After calciner 10, saturated warm air through pipe 12 enters contact economizer 5 below the water distributor 7, cooled by a stream of cold water, cooled by a stream of cold water and cool water. comes from the installation

smoke exhauster 28 along with cooled gases.

Thus, the supply of warm saturated air to the calciner 10 leads to a decrease in heat loss in the calciner, an improvement in the decarbonization

water, as well as to increase efficiency by using for decarbonization of heated air from the air path of the installation (duct 2).

The implementation of the calciner 10 embedded in the contact economizer 5 reduces the weight and size characteristics of the installation and reduces the losses in the air and decarbonated water paths.

Claims (1)

Invention Formula The boiler plant contains a boiler connected at the inlet by a duct with a contact air heater, and at the exit by a gas flue with a contact economizer equipped with a water distributor, a nozzle and a drip pan, and a calciner with air inlet and outlet steam nozzles differing from that that, in order to increase efficiency by improving the quality of decarbonization and economy, the calciner is placed in a contact economizer between the nozzle and the pallet and is connected to the air supply zduhovodu air heater for the contact of the air course, and discharge pipe Vapor - to economizer in the area between the water distributor and the nozzle. Ogore 1 Water supply