RU2334913C1 - Boiler plant - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention is designed for utilisation of exhaust gas heat and may be used for heating enterprises. Boiler plant contains steam boiler, feed-water economiser, chemical water cleaning system, thermal dearator, heat exchanger, assembly hot well, water seal, pressure reducing plant, exhauster, main gas conduit, by-pass gas conduit, vent steam pipeline for thermal dearator, separation unit, condensate collector and gas-spreading heating with irradiating panels. Panels are linked with main gas conduit through outlet connected with thermal dearator through vent steam pipeline for thermal dearator and with separation unit through reverse gas conduit.

EFFECT: effective cooling of combustion gases, heating costs reduction and decrease of temperature drops in heated rooms.

2 dwg

Description

The invention relates to the field of heat supply, in particular to boiler plants.

The closest boiler plant of the same purpose to the claimed invention in terms of features is a boiler plant including a steam boiler, a water economizer, a chemical water treatment system, a chemically purified water heat exchanger, a thermal deaerator, a heat exchanger, a condensate tank, a hydraulic shutter, a reduction plant, a smoke exhaust , main gas duct, bypass gas duct, thermal deaerator vapor pipeline, separation device, condensate collector (see A. Kudinov, Energy Saving in heat-generating plants. Ulyanovsk: Publishing House UlSTU, 2000. - 139 p., Fig. 5.1, p. 90) and adopted as a prototype.

The reasons that impede the achievement of the technical result indicated below when using the well-known boiler plant adopted as a prototype include the fact that the use of a water (steam) district heating system is not efficient enough for heating the enterprise and does not allow sufficiently intensive cooling of the flue gases from the boiler plant.

The essence of the invention is to provide effective cooling of flue gases and reduce the cost of heating the enterprise with a decrease in temperature differences in a heated room.

The technical result is the provision of effective cooling of flue gases and reducing the cost of heating the enterprise with a decrease in temperature differences in a heated room. The specified technical result in the implementation of the invention is achieved by the fact that in the proposed boiler installation containing a steam boiler, a water economizer, a chemical water purification system, a chemically purified water heat exchanger, a thermal deaerator, a heat exchanger, a condensate tank, a hydraulic shutter, a reduction unit, a smoke exhauster, the main gas duct, bypass gas duct, thermal deaerator vapor pipe, separation device, condensate collector, the feature is that it contains systems gazoluchistogo heating company with radiating panels communicating with the main flue from an outlet coupled to the thermal deaerator through vapor conduit thermal deaerator, a separating apparatus via the return gas duct.

The drawings show:

figure 1 is a prototype boiler installation;

figure 2 - the proposed boiler installation.

Information confirming the possibility of carrying out the invention with obtaining the above technical result are as follows.

The boiler installation includes a steam boiler 1, a water economizer 2, a chemical water treatment system 3, a chemically purified water heat exchanger 4, a heat exchanger 5, a heat exchanger 6, a condensate tank 7, a hydraulic shutter 8, a reduction unit 9, a smoke exhauster 10, a main gas duct 11, bypass gas duct 12, thermal deaerator 5 vapor recovery pipe 13, separation device 14, condensate collector 15, enterprise gas-heating system 16 with radiating panels 17 communicating with the main gas duct 11 through outlet 18, connected with a thermal deaerator 5 through the pipe 13 of the evaporator of the thermal deaerator 5, with a separation device 14 through the return gas duct 19.

The work of the proposed boiler installation is as follows.

In a steam boiler 1, the tail surface of which is a water economizer 2, the heat of combustion of the fuel is used to generate steam.

The source water with a temperature of 20 ... 25 ° C is sent to the system 3 of chemical water treatment. Next, the water is heated in the heat exchanger 4 of chemically purified water and enters the thermal deaerator 5. Next, the water is heated in the water economizer 2, from which water is sent to the steam boiler 1.

The main steam stream generated in the steam boiler 1, enters the heat exchanger 6, where it condenses during the heat transfer, the condensate is diverted to the condensate tank 7 through the hydraulic shutter 8. The heat carrier heated in the heat exchanger 6 is directed to the needs of consumers. Part of the steam generated by the steam boiler 1 is sent to the reduction unit 9. After reducing the pressure in the reduction unit 9, steam is supplied to the heat exchanger 4 of chemically purified water as a heating medium and to the thermal deaerator 5 for deaerating the make-up water and condensate from the condensate tank 7.

To create draft in a chimney, a smoke exhauster 10 is used when flue gases are emitted into the atmosphere. The flue gases generated during fuel combustion in a steam boiler 1 are sent to a water economizer 2, where they are cooled to a temperature of 135 ... 150 ° С. Next, the flue gas stream is directed along the main gas duct 11 and is divided into two parts. One part of the flue gas flows through the bypass duct 12 without cooling, the other is cooled together with the vapor from the thermal deaerator 5 coming through the pipe 13 of the vapor of the thermal deaerator 5. After cooling, the mixture of flue gases and the vapor of the thermal deaerator 5 is sent to the separation device 14 to separate the droplet moisture entering the condensate collector 15. Then, droplet moisture enters the condensate collection tank 7. The flue gases are cooled together with the vapor from the thermal deaerator 5 when the heat is transferred by radiation to the heated room by the gas-heating system 16 of the enterprise with radiating panels 17 connected to the main gas duct 11 through the outlet 18. Vapor of the thermal deaerator 5 is fed into the gas-heating system 16 of the enterprise by a pipe 13 of a vapor of a thermal deaerator 5 through a branch 18.

After separation, the cooled flue gases from the gas-fired heating system 16 of the enterprise are mixed with the un-cooled flue gases passing through the bypass duct 15 and the smoke exhauster 10 is discharged through the chimney into the atmosphere. Thus, efficient cooling of flue gases is carried out with a reduction in the cost of heating the enterprise (with the refusal to use a water or steam heating system) while reducing temperature differences in a heated room.

Claims (1)

A boiler plant containing a steam boiler, a water economizer, a chemical water treatment system, a chemically purified water heat exchanger, a thermal deaerator, a heat exchanger, a condensate tank, a hydraulic shutter, a reduction system, a smoke exhaust, a main gas duct, a bypass duct, a thermal deaerator vapor pipe, a separation device condensate collector, characterized in that it contains a gas-heating system of the enterprise with radiating panels communicating with the main gas duct through the outlet, with unified with a thermal deaerator through a vapor line of a thermal deaerator, with a separation device through a return gas duct.

Images