CN207865419U - The automatic dust removing desulfurizer of novel coal steam boiler - Google Patents

Abstract

A kind of automatic dust removing desulfurizer of novel coal steam boiler includes residual heat flue,Waste-heat boiler,Flue gas collection sinks device,Heat exchanger,Water tank,The residual heat flue is communicated with the flue collector of coal-fired steam boiler,The Waste-heat boiler is mounted in residual heat flue,Exhanst gas outlet of its steam (vapor) outlet towards residual heat flue,The steam outlet of the Waste-heat boiler is connected with steam jet,Its steam jet is located at the smoke outlet of the residual heat flue,One end of the heavy device of the flue gas collection and the smoke outlet of residual heat flue connect,Its other end is connect with smoke exhaust pipe,The air inlet of the heat exchanger is connect with the smoke outlet of the heavy device of the flue gas collection by smoke exhaust pipe,The end of exhaust outlet is connected with chimney,The water inlet of the heat exchanger is connect with water inlet pipe,The outlet pipe of the water tank and the heat exchanger,Waste-heat boiler drainpipe connects,It is provided with feed pump beside the water tank,Sending the water after heating to coal-fired steam boiler.

Description

The automatic dust removing desulfurizer of novel coal steam boiler

Technical field

The utility model belongs to the fume treatment field of coal-fired steam boiler more particularly to a kind of novel coal steam boiler Automatic dust removing desulfurizer.

Background technology

The flue gas generated in coal-fired steam boiler operation is a kind of pollution sources, because being generated in burning containing coal in flue gas The gases such as dust, carbon monoxide, carbon dioxide, sulfur dioxide certainly will be polluted if being directly discharged in air without processing Environment and human body is damaged.Therefore, it is increasingly taken seriously to the processing of coal-fired steam boiler flue gas, there are many dedustings Desulfurizer comes out.But existing dust-removing desulfurating apparatus general structure is more complex, investment is larger, more with water, thus promotes and exist Difficulty is promoted more difficult especially for middle-size and small-size coal-fired steam boiler；Furthermore some apparatus functions are single, are only capable of dedusting Or desulfurization, cause many medium and small boilers only match dust-extraction unit, be unworthy of desulfurizer, or be mounted with desulfurizer without the use of.

Invention content

In view of this, it is necessary to provide a kind of good dedusting effect, structure is simplified, can carry out the novel coal of waste heat recycling The automatic dust removing desulfurizer of steam boiler.

A kind of automatic dust removing desulfurizer of novel coal steam boiler, including residual heat flue, Waste-heat boiler, flue gas The heavy device of collection, heat exchanger, water tank, the residual heat flue are communicated with the flue collector of coal-fired steam boiler, the Waste-heat boiler peace In residual heat flue, steam (vapor) outlet is towards the exhanst gas outlet of residual heat flue, the steam outlet of the Waste-heat boiler It is connected with the steam jet for spraying steam, steam jet is located at the smoke outlet of the residual heat flue, the flue gas collection One end of heavy device and the smoke outlet of residual heat flue connect, and the other end is connect with smoke exhaust pipe, the heavy device of the flue gas collection it is interior Diameter is at least 6 times of the smoke outlet internal diameter of residual heat flue, the cigarette of the air inlet of the heat exchanger and the heavy device of the flue gas collection Gas outlet end is connected by smoke exhaust pipe, and the end of exhaust outlet is connected with chimney, and the water inlet of the heat exchanger is connect with water inlet pipe, The water tank is connect with the drainpipe of the outlet pipe of the heat exchanger, Waste-heat boiler, and water supply is provided with beside the water tank Pump, for sending the water after heating to coal-fired steam boiler.

Preferably, air inlet and flue door are provided on the residual heat flue.

Preferably, the side wall of the residual heat flue is provided with the bearing for connecting the heavy device of the flue gas collection.

Preferably, the internal diameter of the smoke outlet of the residual heat flue is the 1/3~1/2 of residual heat flue internal diameter.

Preferably, the heavy device of the flue gas collection includes shell, smoke barrier, gear cigarette orifice plate, gear cigarette cap, and the bottom of the shell is set It is equipped with slag-drip opening, top is provided with smoke outlet, and the smoke barrier is arranged in the flue gas integrator, with flue gas integrator shell Inner wall is fixedly connected, and below the smoke outlet of the flue gas integrator, and the gear cigarette orifice plate is arranged in the smoke barrier Lower section is fixedly connected with smoke barrier, and the gear cigarette cap is arranged below the gear cigarette orifice plate, the shell with the flue gas integrator Inner wall be fixedly connected, and there are gaps with gear cigarette orifice plate lower edge for the gear cigarette cap.

Preferably, the gear cigarette cap is cone, and the shell of the flue gas integrator is fixed on by least three supporting rods On the inner wall of body, the gear cigarette orifice plate is cylinder, and gear cigarette orifice surface is provided with perforation circular hole, to guide flue gas to circulate.

The utility model uses above-mentioned technical proposal, advantage to be：Novel coal described in the utility model steams The automatic dust removing desulfurizer of boiler furnace generates water vapour, institute using the high-temperature flue gas that coal-fired steam boiler generates as heat source The smoke outlet formation negative pressure that water vapour is ejected in residual heat flue by steam jet high speed is stated, the flue gas after heat exchange is inhaled Enter flue gas collection and sink and be dusted and desulfurization in device, the flue gas after dust-removal and desulfurizing still carries higher temperature, by dust-removal and desulfurizing Flue gas afterwards introduces heat exchanger, and the water after heating is sent again to coal-fired steam boiler, has not only reached dust-removal and desulfurizing effect in this way Fruit, and UTILIZATION OF VESIDUAL HEAT IN is improved, save coal-fired resource.

Description of the drawings

Fig. 1 is the connection diagram of the utility model.

Fig. 2 is the structural schematic diagram of the flue gas integrator of the utility model.

Fig. 3 is the structural schematic diagram of the flue gas integrator of the utility model.

In figure：Coal-fired steam boiler flue collector 10, residual heat flue 20, air inlet 201, bearing 202, flue door 203, waste heat Using boiler 30, steam jet 301, water supply pipe 302, flue gas collection sink device 40, shell 401, smoke barrier 402, gear cigarette orifice plate 403, Keep off cigarette cap 404, slag-drip opening, 405, smoke outlet 406, heat exchanger 50, water inlet pipe 501, chimney 60, water tank 70, small pump 80.

Specific implementation mode

Fig. 1 to Fig. 3 is please referred to, it is de- that the utility model embodiment provides a kind of automatic dust removing of novel coal steam boiler Sulphur device, including the heavy device 40 of residual heat flue 20, Waste-heat boiler 30, flue gas collection, heat exchanger 50, water tank 70, the waste heat cigarette Road 20 is communicated with the flue collector 10 of coal-fired steam boiler, and the Waste-heat boiler 30 is mounted in residual heat flue 20, steam The exhanst gas outlet towards residual heat flue 20 is exported, the steam outlet of the Waste-heat boiler 30 is connected with for spraying steam Steam jet 301, steam jet is located at the smoke outlet of the residual heat flue 20, the flue gas collection sink device 40 one end with The smoke outlet of residual heat flue 20 connects, and the other end is connect with smoke exhaust pipe, and the internal diameter of the heavy device of the flue gas collection 40 is at least 6 times of the smoke outlet internal diameter of residual heat flue 20, the air inlet of the heat exchanger 50 and the flue gas collection sink the flue gas of device 40 Outlet end is connected by smoke exhaust pipe, and the end of exhaust outlet is connected with chimney 60, water inlet and the water inlet pipe 501 of the heat exchanger 50 Connection, the water tank 70 is connect with the drainpipe of the outlet pipe of the heat exchanger 50, Waste-heat boiler 30, by the water tank 70 While feed pump 80 is provided with, for sending the water after heating to coal-fired steam boiler.

It compares and original technology, the high-temperature flue gas generated using coal-fired steam boiler generates water vapour as heat source, water steams The smoke outlet that vapour is ejected in residual heat flue 20 by 301 high speed of steam jet forms negative pressure, and the flue gas after heat exchange is inhaled Enter flue gas collection and sink to be dusted in device 40 and desulfurization, the flue gas after dust-removal and desulfurizing still carry higher temperature, dedusting taken off Flue gas after sulphur introduces heat exchanger 50, and the water after heating is sent again to water tank 70, in addition, the water that Waste-heat boiler 20 is discharged It is also sent to water tank 70, the hot water of water tank 70 is sent by small pump 80 to coal-fired steam boiler again, and it is de- not only reached dedusting in this way Sulphur effect, and UTILIZATION OF VESIDUAL HEAT IN is improved, save coal-fired resource.

Further, air inlet 201 and flue door 203 are provided on the residual heat flue 20.

Further, the side wall of the residual heat flue 20 is provided with the bearing 202 for connecting the heavy device of the flue gas collection.

Further, the internal diameter of the smoke outlet of the residual heat flue 20 is the 1/3~1/2 of 20 internal diameter of residual heat flue.

Further, the heavy device 40 of the flue gas collection includes shell 401, smoke barrier 402, gear cigarette orifice plate 403, keeps off cigarette cap 404, The bottom of the shell 401 is provided with slag-drip opening 405, and top is provided with smoke outlet 406, and the smoke barrier 402 is arranged described It in flue gas integrator 40, is fixedly connected with 401 inner wall of flue gas integrator shell, and positioned at the smoke outlet of the flue gas integrator 40 406 lower sections, the gear cigarette orifice plate 403 are arranged in the lower section of the smoke barrier 402, are fixedly connected with smoke barrier 402, the gear cigarette Cap 404 is arranged below the gear cigarette orifice plate 403, is fixedly connected with the inner wall of the shell 401 of the flue gas integrator, and described Keeping off cigarette cap 404, there are gaps with 403 lower edge of gear cigarette orifice plate.

Setting smoke barrier 402, gear cigarette orifice plate 403, gear cigarette cap 404, change flue gas and enter cigarette in flue gas integrator 40 Direction after gas integrator, reduces flow velocity, increases residence time of the flue gas in flue gas integrator 40, and flue gas is made to be steamed with water Gas is sufficiently mixed.

Further, the gear cigarette cap 404 is cone, and the flue gas integrator is fixed on by least three supporting rods Shell 401 inner wall on, the gear cigarette orifice plate 403 is cylinder, and 403 surface of gear cigarette orifice plate is provided with for drawing gas-guiding flow Logical perforation circular hole.

The automatic dust removing desulfurizer of the novel coal steam boiler of the utility model one preferably use process is as follows：Combustion The flue gas that coal steam boiler generates generally has 800 DEG C or so, which enters residual heat flue 20 through boiler flue collector 10, will Water in the Waste-heat boiler 30 in residual heat flue 20 is heated into water vapour, and the water vapour is through steam jet 301 High speed sprays, and negative pressure is formed in the smoke outlet of residual heat flue 20, and the flue gas sucking flue gas collection after heat exchange is sunk in device 40； Flue gas, which enters flue gas collection and sinks flow velocity after device 40, reduces and changes direction, and can fully be mixed with entering flue gas collection and sinking the vapor of device 40 It closes, thus contained dust moistening, change weight, volume increase, contained sulfur dioxide reacts with vapor generates sulfurous acid liquid, The dust of moistening is deposited on flue gas collection with sulfurous acid and sinks in device 40, is sent into ground by sinking the delivery pipe that device 40 connect with flue gas collection It is handled in the dust accumulation pond in face, that is, realizes the dedusting and desulfurization of flue gas, the water after heating is sent to water tank 70, separately again Outside, the water that Waste-heat boiler 20 is discharged is also sent to water tank 70, and the hot water of water tank 70 is sent by small pump 80 to coal-fired steam again Boiler.

Above disclosures are merely preferred embodiments of the utility model, with this utility model cannot be limited certainly Interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to this reality The equivalent variations made by novel claim, still fall within the scope of the utility model.

Claims (6)

1. a kind of automatic dust removing desulfurizer of novel coal steam boiler, it is characterised in that including residual heat flue, UTILIZATION OF VESIDUAL HEAT IN The heavy device of boiler, flue gas collection, heat exchanger, water tank, the residual heat flue are communicated with the flue collector of coal-fired steam boiler, the waste heat profit With boiler erection in residual heat flue, steam (vapor) outlet is towards the exhanst gas outlet of residual heat flue, the steaming of the Waste-heat boiler The steam jet for spraying steam is connected at vapor outlet, steam jet is located at the smoke outlet of the residual heat flue, institute The smoke outlet of one end and residual heat flue for stating the heavy device of flue gas collection connects, and the other end is connect with smoke exhaust pipe, the flue gas collection The internal diameter of heavy device is at least 6 times of the smoke outlet internal diameter of residual heat flue, the air inlet of the heat exchanger and the flue gas collection The smoke outlet of heavy device is connected by smoke exhaust pipe, and the end of exhaust outlet is connected with chimney, the water inlet of the heat exchanger with into Water pipe connects, and the water tank is connect with the drainpipe of the outlet pipe of the heat exchanger, Waste-heat boiler, is set beside the water tank It is equipped with feed pump, for sending the water after heating to coal-fired steam boiler.

2. the automatic dust removing desulfurizer of novel coal steam boiler as described in claim 1, it is characterised in that：The waste heat Air inlet and flue door are provided on flue.

3. the automatic dust removing desulfurizer of novel coal steam boiler as described in claim 1, it is characterised in that：The waste heat The side wall of flue is provided with the bearing for connecting the heavy device of the flue gas collection.

4. the automatic dust removing desulfurizer of the novel coal steam boiler as described in claims 1 to 3 is any, it is characterised in that： The internal diameter of the smoke outlet of the residual heat flue is the 1/3~1/2 of residual heat flue internal diameter.

5. the automatic dust removing desulfurizer of novel coal steam boiler as described in claim 1, it is characterised in that：The flue gas The heavy device of collection includes shell, smoke barrier, gear cigarette orifice plate, gear cigarette cap, and the bottom of the shell is provided with slag-drip opening, and top is provided with row Mouth, the smoke barrier are arranged in the flue gas integrator, are fixedly connected with flue gas integrator inner walls, and positioned at described Below the smoke outlet of flue gas integrator, the gear cigarette orifice plate is arranged in the lower section of the smoke barrier, is fixedly connected with smoke barrier, institute It states gear cigarette cap to be arranged below the gear cigarette orifice plate, be fixedly connected with the inner wall of the shell of the flue gas integrator, and the gear There are gaps with gear cigarette orifice plate lower edge for cigarette cap.

6. the automatic dust removing desulfurizer of novel coal steam boiler as claimed in claim 5, it is characterised in that：The gear cigarette Cap is conical, on the inner wall by the shell that at least three supporting rods are fixed on the flue gas integrator, the gear cigarette orifice plate For cylinder, gear cigarette orifice surface is provided with the perforation circular hole for guiding flue gas to circulate.