CN207146379U

CN207146379U - A kind of new and effective pulverized-coal fired boiler

Info

Publication number: CN207146379U
Application number: CN201720937599.0U
Authority: CN
Inventors: 赵诚
Original assignee: Shenyang Blue Sky Public Energy Conservation And Environmental Protection Equipment Co Ltd
Current assignee: Shenyang Blue Sky Public Energy Conservation And Environmental Protection Equipment Co Ltd
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2018-03-27
Anticipated expiration: 2027-07-31

Abstract

A kind of new and effective pulverized-coal fired boiler of the utility model, including body of heater, burner, smoke conveying duct, the lower portion of furnace body installs burner, the burner communicates with furnace interior, lower portion of furnace body burner connects coal feeder, coal feeder includes Pulverized Coal Bin, screw unloading valve, middle powder cabin, coal dust drop pipe, screw(-type) feeder, powder sinking tube, ajutage, one end connection primary air fan of ajutage, another one end connection burner of ajutage；The lower section of burner blows to the second blower in body of heater, the bottom installation furnace bottom ash bucket of body of heater by ajutage connection wind direction, and the lower section of furnace bottom ash bucket sets Machine for cleaning-out ash, and the ash hole of furnace bottom ash bucket leads in Machine for cleaning-out ash；Upper of furnace body side connects smoke conveying duct, and smoke filter, air preheater, SCR denitration reactor, SCR denitration reactor connection smoke exhaust pipe are set gradually on smoke conveying duct.The utility model ensures the uniform stabilization of coal dust firing, ensures the burnout rate of coal dust firing, improves boiler efficiency.

Description

A kind of new and effective pulverized-coal fired boiler

Technical field

The utility model belongs to Industrial Boiler Technology field, particularly relates to a kind of new and effective pulverized-coal fired boiler.

Background technology

Coal produces substantial amounts of dust, sulfur dioxide and nitrogen oxides in traditional combustion application, causes serious environment Pollution and ecological disruption；Wherein, coal fired power generation and coal-burned industrial boiler are most important two application fields.At present, industrial pot Stove is important thermal powerplant, and China is world today's boiler for producing and most commonly used country；Industrial Boiler capacity one As it is all smaller, most of the coal-burned industrial boiler in China is still the chain grate boiler of transmission, and fuel used coal be difficult to it is full The quality index of sufficient design requirement, boiler efficiency is generally relatively low, and energy waste is serious, meanwhile, the letter of the environmental protection facility such as dust-removal and desulfurizing It is plain, cause atmosphere pollution.At present, China's winter haze seriously has direct relation with coal-fired and industrial pollution, reduces fire coal and disappears Consumption, reduce boiler pollutant discharge capacity, improve fired coal combustion efficiency, turning into the problem of boiler industry.

The content of the invention

The utility model makes up the deficiencies in the prior art aiming above mentioned problem, there is provided a kind of new and effective coal dust pot Stove.

To achieve the above object, the utility model adopts the following technical scheme that.

A kind of new and effective pulverized-coal fired boiler of the utility model, including body of heater, burner, smoke conveying duct, the body of heater Bottom installation burner, the burner communicates with furnace interior, it is characterised in that：The burner connection of the lower portion of furnace body Coal feeder, described coal feeder include from top to bottom be sequentially communicated Pulverized Coal Bin, screw unloading valve, middle powder cabin, coal dust Drop pipe, screw(-type) feeder, powder sinking tube, ajutage, one end of the ajutage are connected with primary air fan, the ajutage it is another Individual one end connects burner；The lower section of the burner is connected with wind direction by ajutage and blows to second blower in body of heater, The bottom of the body of heater is provided with furnace bottom ash bucket, and Machine for cleaning-out ash is provided with below the furnace bottom ash bucket, and the furnace bottom ash bucket goes out Grey mouth leads in Machine for cleaning-out ash；The upper of furnace body side connects smoke conveying duct, is set gradually on the smoke conveying duct There are smoke filter, air preheater, SCR denitration reactor, one end connection exhanst gas outlet of the smoke filter, the cigarette The other end connection air preheater of air filter, the other end connection SCR denitration reactor of the air preheater are described SCR denitration reactor is connected with smoke exhaust pipe.

As a kind of preferred scheme of the present utility model, the bottom of furnace body surrounding is provided with supporting leg.

As another preferred scheme of the present utility model, furnace wall is fixed with the body of heater, fixes and sets in the furnace wall It is equipped with water-cooling wall.

As another preferred scheme of the present utility model, the upper of furnace body side is provided with exhanst gas outlet, the cigarette Gas is provided with Crust blocks pipe bundle in outlet.

As another preferred scheme of the present utility model, the furnace bottom ash bucket is steel furnace bottom ash bucket.

As another preferred scheme of the present utility model, the screw(-type) feeder includes coal chute, screw rod of delivering coal, electricity Machine, the clutch end connection of motor are delivered coal screw rod, and the screw rod of delivering coal is arranged in coal chute, the coal chute it is upper Side's connection coal dust drop pipe, the lower section connection powder sinking tube of the coal chute.

As another preferred scheme of the present utility model, the smoke filter is detachably connected on by mounting flange On smoke conveying duct.

As another preferred scheme of the present utility model, installed in the smoke conveying duct above the air preheater There is coil pipe, the both sides of the coil pipe are provided with the water inlet pipe mouth and effluent pipe mouth on the outside of smoke conveying duct respectively.

As another preferred scheme of the present utility model, the motor uses variable-frequency motor.

The beneficial effects of the utility model.

1st, a kind of new and effective pulverized-coal fired boiler provided by the utility model, it is described to give by set coal feeder Device for coal include from top to bottom be sequentially communicated Pulverized Coal Bin, screw unloading valve, middle powder cabin, coal dust drop pipe, screw(-type) feeder, Powder sinking tube, ajutage, and set overfire air fan；Fully coal dust can so be crushed, while can ensured To the continuity and continuation of coal process, ensure the uniform stabilization of coal dust firing, ensure the burnout rate of coal dust firing, improve boiler Efficiency.

2nd, the utility model is rational in infrastructure, easy to use, by setting Crust blocks pipe bundle in exhanst gas outlet and in flue gas Smoke filter is set in conveyance conduit, the utilization rate of boiler can be improved, and it is more environmentally-friendly；Set air preheat simultaneously Device, coil pipe, the thermal efficiency can be improved；Set SCR denitration reactor can effectively reduce the discharge of itrated compound, reduce to sky The harm in compression ring border.

Brief description of the drawings

In order that technical problem, technical scheme and beneficial effect that the utility model solves are more clearly understood, below With reference to the drawings and the specific embodiments, the utility model is further elaborated.It should be appreciated that tool described herein Body embodiment only to explain the utility model, is not used to limit the utility model.

Fig. 1 is a kind of overall structure diagram of new and effective pulverized-coal fired boiler of the utility model.

Fig. 2 is a kind of coal chute partial cutaway structure for amplifying of the screw(-type) feeder of new and effective pulverized-coal fired boiler of the utility model Schematic diagram.

Fig. 3 is a kind of body of heater sectional view of new and effective pulverized-coal fired boiler of the utility model.

Marked in figure：1 be Pulverized Coal Bin, 2 be screw unloading valve, 3 be middle powder cabin, 4 be coal dust drop pipe, 5 be spiral to Material machine, 501 be coal chute, 502 for deliver coal screw rod, 503 be motor, 6 be powder sinking tube, 7 be primary air fan, 8 be overfire air fan, 9 it is ajutage, 10 be burner, 11 be supporting leg, 12 be furnace bottom ash bucket, 13 be Machine for cleaning-out ash, 14 be body of heater, 15 is flue gas delivery pipe Road, 16 be smoke filter, 17 be coil pipe, 18 be water inlet pipe mouth, 19 be effluent pipe mouth, 20 be air preheater, 21 be that SCR takes off Nitre reactor, 22 be smoke exhaust pipe, 23 be furnace wall, 24 be water-cooling wall, 25 be Crust blocks pipe bundle, 26 be exhanst gas outlet.

Embodiment

With reference to shown in accompanying drawing 1 to 3, a kind of new and effective pulverized-coal fired boiler of the utility model, including body of heater 14, burner 10, Smoke conveying duct 15, the bottom installation burner 10 of the body of heater 14, for the burner 10 with being communicated inside body of heater 14, it is special Sign is：The burner 10 of the bottom of body of heater 14 connects coal feeder, and described coal feeder includes from top to bottom successively connecting Logical Pulverized Coal Bin 1, screw unloading valve 2, middle powder cabin 3, coal dust drop pipe 4, screw(-type) feeder 5, powder sinking tube 6, ajutage 9, institute The one end for stating ajutage 9 is connected with primary air fan 7, another one end connection burner 10 of the ajutage 9；The burner 10 Lower section wind direction be connected with by ajutage 9 blow to second blower 8 in body of heater 14, the bottom of the body of heater 14 is provided with stove Bottom ash bucket 12, the lower section of the furnace bottom ash bucket 12 are provided with Machine for cleaning-out ash 13, and the ash hole of the furnace bottom ash bucket 12 leads to Machine for cleaning-out ash In 13；The top side of body of heater 14 connects smoke conveying duct 15, and flue gas is disposed with the smoke conveying duct 15 Filter 16, air preheater 20, SCR denitration reactor 21, one end connection exhanst gas outlet 26 of the smoke filter 16, institute The other end connection air preheater 20 of smoke filter 16 is stated, the other end connection SCR denitration of the air preheater 20 is anti- Device 21 is answered, the SCR denitration reactor 21 is connected with smoke exhaust pipe 22.

As a kind of preferred scheme of the present utility model, the bottom surrounding of body of heater 14 is provided with supporting leg 11.

As another preferred scheme of the present utility model, furnace wall 23 is fixed with the body of heater 14, in the furnace wall 23 It is fixedly installed water-cooling wall 24.

As another preferred scheme of the present utility model, the top side of body of heater 14 is provided with exhanst gas outlet 26, institute State and Crust blocks pipe bundle 25 is provided with exhanst gas outlet 26；The flying dust that the Crust blocks pipe bundle 25 can prevent from carrying in flue gas, which bonds, to be caused to tie Slag blocks.

As another preferred scheme of the present utility model, the furnace bottom ash bucket 12 is steel furnace bottom ash bucket.

As another preferred scheme of the present utility model, the screw(-type) feeder 5 includes coal chute 501, spiral of delivering coal Bar 502, motor 503, the clutch end of motor 503 connect screw rod 502 of delivering coal, and the screw rod 502 of delivering coal is arranged on defeated In coal pipe 501, the top connection coal dust drop pipe 4 of the coal chute 501, the lower section connection powder sinking tube 6 of the coal chute 501.

As another preferred scheme of the present utility model, the smoke filter 16 is detachably connected by mounting flange On smoke conveying duct 15；Set smoke filter 16 may filter that part pernicious gas and dust in flue gas.

As another preferred scheme of the present utility model, in the smoke conveying duct 15 of the top of air preheater 20 Coil pipe 17 is installed, the both sides of the coil pipe 17 are provided with the water inlet pipe mouth 18 for being located at the outside of smoke conveying duct 15 respectively with going out Hose nozzle 19.

As another preferred scheme of the present utility model, the motor 503 uses variable-frequency motor.

Set SCR denitration reactor 21 can effectively reduce the discharge of itrated compound, reduce the harm to air ambient.

The lower section of the burner 10 is connected with wind direction by ajutage 9 and blows to second blower 8 in body of heater 14；Pass through Described second blower 8 can cause Pulverized Coal to obtain the air of abundance so that Pulverized Coal burns more abundant, burns Rate is higher.

Specifically, burner 10 described in the utility model, screw unloading valve 2, Machine for cleaning-out ash 13, SCR denitration reactor 21, Smoke filter 16, air preheater 20 are device common in the prior art, equipment, for those skilled in the art It is well known；Therefore, concrete structure does not repeat herein.

The bottom of body of heater 14 described in the utility model is provided with furnace bottom ash bucket 12, and the lower section of the furnace bottom ash bucket 12 is provided with Machine for cleaning-out ash 13, the ash hole of the furnace bottom ash bucket 12 lead in Machine for cleaning-out ash 13；The ash of after-flame is released to water seal from furnace bottom ash bucket 12 In the Machine for cleaning-out ash 13 closed, having prevented pulverized-coal fired boiler, always Flue dust amount of leakage is big, the severe situation of working environment.

It is understood that above with respect to specific descriptions of the present utility model, it is merely to illustrate the utility model and is not The technical scheme described by the utility model embodiment is limited to, it will be understood by those within the art that, still can be with The utility model is modified or equivalent substitution, to reach identical technique effect；As long as satisfaction uses needs, all in this reality Within new protection domain.

Claims

1. a kind of new and effective pulverized-coal fired boiler, including body of heater（14）, burner（10）, smoke conveying duct（15）, the body of heater （14）Bottom installation burner（10）, the burner（10）With body of heater（14）Inside communicates, it is characterised in that：The body of heater （14）The burner of bottom（10）Coal feeder is connected, described coal feeder includes the Pulverized Coal Bin being from top to bottom sequentially communicated （1）, screw unloading valve（2）, middle powder cabin（3）, coal dust drop pipe（4）, screw(-type) feeder（5）, powder sinking tube（6）, ajutage （9）, the ajutage（9）One end be connected with primary air fan（7）, the ajutage（9）Another one end connection burner （10）；The burner（10）Lower section pass through ajutage（9）It is connected with wind direction and blows to body of heater（14）Interior second blower （8）, the body of heater（14）Bottom furnace bottom ash bucket is installed（12）, the furnace bottom ash bucket（12）Lower section be provided with Machine for cleaning-out ash （13）, the furnace bottom ash bucket（12）Ash hole lead to Machine for cleaning-out ash（13）It is interior；The body of heater（14）Top side connection flue gas is defeated Send pipeline（15）, the smoke conveying duct（15）On be disposed with smoke filter（16）, air preheater（20）、SCR Benitration reactor（21）, the smoke filter（16）One end connection exhanst gas outlet（26）, the smoke filter（16）'s The other end connects air preheater（20）, the air preheater（20）The other end connection SCR denitration reactor（21）, it is described SCR denitration reactor（21）It is connected with smoke exhaust pipe（22）.

A kind of 2. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The body of heater（14）Bottom surrounding Supporting leg is installed（11）.

A kind of 3. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The body of heater（14）Inside it is fixed with Furnace wall（23）, the furnace wall（23）Inside it is fixedly installed water-cooling wall（24）.

A kind of 4. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The body of heater（14）Top side It is provided with exhanst gas outlet（26）, the exhanst gas outlet（26）Inside it is provided with Crust blocks pipe bundle（25）.

A kind of 5. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The furnace bottom ash bucket（12）For steel Furnace bottom ash bucket processed.

A kind of 6. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The screw(-type) feeder（5）Bag Include coal chute（501）, screw rod of delivering coal（502）, motor（503）, motor（503）Clutch end connection deliver coal screw rod （502）, the screw rod of delivering coal（502）It is arranged on coal chute（501）It is interior, the coal chute（501）Top connection coal dust under Fall pipe（4）, the coal chute（501）Lower section connection powder sinking tube（6）.

A kind of 7. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The smoke filter（16）It is logical Cross mounting flange and be detachably connected on smoke conveying duct（15）On.

A kind of 8. new and effective pulverized-coal fired boiler according to claim 1, it is characterised in that：The air preheater（20）On The smoke conveying duct of side（15）Coil pipe is inside installed（17）, the coil pipe（17）Both sides be provided with respectively positioned at flue gas convey Pipeline（15）The water inlet pipe mouth in outside（18）With effluent pipe mouth（19）.

A kind of 9. new and effective pulverized-coal fired boiler according to claim 6, it is characterised in that：The motor（503）Using change Frequency motor.