CN216799369U

CN216799369U - Dry deacidification equipment for waste incineration flue gas and flue gas purification system

Info

Publication number: CN216799369U
Application number: CN202123368777.8U
Authority: CN
Inventors: 袁俊贤; 茆勇
Original assignee: DC Environmental Co ltd
Current assignee: DC Environmental Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-24
Anticipated expiration: 2031-12-28

Abstract

The utility model provides a dry deacidification device and a flue gas purification system for waste incineration flue gas, wherein the dry deacidification device for the waste incineration flue gas comprises: the device comprises a support frame, a powder storage bin, a quick connector, a feeding pipe, a screw feeder, a connecting pipe, a discharging control assembly, a discharging pipe, an ejector, a grinding machine and a nozzle. The powder storage bin is arranged on the supporting frame, the quick connector is communicated with the top of the powder storage bin through the feeding pipe, the bottom of the powder storage bin, the connecting pipe, the screw feeder, the discharging pipe, the ejector, the grinding machine and the nozzle are communicated in sequence, and the unloading control assembly is connected with the connecting pipe and located between the powder storage bin and the screw feeder. The dry deacidification equipment for the waste incineration flue gas can stably convey the powder, and the powder is conveyed to the grinding machine, is ground and then is sprayed out, so that the powder is easy to react with the flue gas.

Description

Dry deacidification equipment for waste incineration flue gas and flue gas purification system

Technical Field

The utility model relates to the technical field, in particular to dry deacidification equipment and a flue gas purification system for waste incineration flue gas.

Background

In a waste incineration power plant, a flue gas purification system usually adopts a rotary spray semi-dry method, activated carbon injection and cloth bag dust removal flue gas purification mode, a desulfurizer mainly adopts lime slurry, and the lime slurry is atomized into 30-60um fog drops through a rotary atomizer and enters a deacidification tower to react with pollutants such as sulfide, hydride and the like in flue gas. The emergency system of the semi-dry method is usually a dry deacidification system, and is characterized in that temperature-reduced water is sprayed into a reaction tower, the temperature of flue gas in the tower is reduced to 150 ℃, deacidification powder is sprayed at a flue at the outlet of the reaction tower, and pollutants such as sulfide, hydride and the like in the flue gas are removed through the reaction of the powder and the pollutants in the flue gas. The existing dry deacidification equipment has poor powder conveying effect, and the powder is difficult to fully react with smoke after being sprayed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, provides dry deacidification equipment for waste incineration flue gas, and improves the powder conveying stability.

One embodiment of the present invention provides a dry deacidification apparatus for waste incineration flue gas, comprising: the device comprises a support frame, a powder storage bin, a quick connector, a feeding pipe, a screw feeder, a connecting pipe, a discharging control assembly, a discharging pipe, an ejector, a grinding machine and a nozzle.

The powder storage bin is arranged on the support frame, the quick connector is communicated with the top of the powder storage bin through the feeding pipe, the bottom of the powder storage bin, the connecting pipe, the screw feeder, the discharging pipe, the ejector, the grinding machine and the nozzle are sequentially communicated, and the discharging control assembly is connected with the connecting pipe and positioned between the powder storage bin and the screw feeder;

the discharging control assembly comprises a valve, a star-shaped discharger and a heavy hammer flap valve, and the valve, the star-shaped discharger and the heavy hammer flap valve are sequentially connected through the connecting pipe in the direction from the bottom of the powder storage bin to the screw feeder.

Compared with the prior art, the dry deacidification equipment for the waste incineration flue gas can stably convey powder, and the powder is conveyed to a grinding machine, ground and then sprayed out, so that the powder is easy to react with the flue gas.

In one embodiment, the top of the powder storage bin is also provided with a bin top dust remover and a pressure release valve, and the bin top dust remover and the pressure release valve are communicated with the inside of the powder storage bin.

In one embodiment, a bin wall vibrator is further arranged on the powder storage bin.

In one embodiment, the powder storage bin is further provided with a radar level gauge and a rotation resistance level gauge, the radar level gauge is located at the top of the storage bin, a detection head of the radar level gauge extends into the powder storage bin, the rotation resistance level gauge is located on the side face of the storage bin, and a detection blade of the rotation resistance level gauge extends into the powder storage bin.

In one embodiment, the valve is a manual gate valve.

In one embodiment, the exit opening of the nozzle is flared.

In one embodiment, the dry deacidification equipment for waste incineration flue gas further comprises a plurality of suspension seats, a plurality of suspension members and a plurality of weighing sensors, wherein the suspension seats are arranged on the support frame, and the weighing sensors are connected with the suspension seats in a one-to-one correspondence mode through the suspension members;

the screw feeder comprises a main body, a screw rod and a motor, wherein a conveying channel is arranged in the main body, the main body is connected with the weighing sensor, a feeding hole and a discharging hole are formed in the main body, the feeding hole is formed in the top of the main body, the discharging hole is formed in the bottom of the main body, the screw rod is arranged in the conveying channel, and the motor is in transmission connection with the screw rod;

the connecting pipe with feed inlet swing joint, the discharge gate with unloading union coupling, wherein, unloading pipe is the flexible pipe.

In one embodiment, the ejector includes a venturi tube, an injection pipe, and a fan, the venturi tube is connected to the injection pipe and the discharging pipe, respectively, and the fan is connected to the grinder through the injection pipe.

In one embodiment, an electric hoist is further arranged on the support frame.

A flue gas purification system comprising: flue gas pipeline, dust remover and as above-mentioned a dry process deacidification equipment for msw incineration flue gas, flue gas pipeline with the import intercommunication of dust remover, the nozzle stretches into in the flue gas pipeline.

In order that the utility model may be more clearly understood, specific embodiments thereof will be described hereinafter with reference to the accompanying drawings.

Drawings

FIG. 1 is a partial cross-sectional view of a dry deacidification apparatus for waste incineration flue gas in accordance with one embodiment of the present invention;

FIG. 2 is a schematic view of a nozzle of an embodiment of the present invention as it extends into a flue gas conveying duct;

FIG. 3 is a sectional view showing a partial configuration of a dry deacidification apparatus for waste incineration flue gas according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the top of the dry deacidification equipment for the waste incineration flue gas according to one embodiment of the utility model;

fig. 5 is a partial structural schematic diagram of a dry deacidification device for waste incineration flue gas according to an embodiment of the utility model.

Description of reference numerals:

10. a support frame; 11. a powder storage bin; 111. a dust remover at the top of the bin; 112. a pressure relief valve; 113. a bin wall vibrator; 114. A radar level gauge; 115. a rotation resistance level meter; 12. a quick interface; 13. a feed tube; 14. a connecting pipe; 15. a discharging pipe; 16. turning a ladder; 20. a screw feeder; 21. a main body; 22. a screw; 23. a motor; 30. a discharge control assembly; 31. a valve; 32. a star discharger; 33. a heavy hammer flap valve; 40. an ejector; 41. a venturi tube; 42. an injection duct; 43. a fan; 50. a grinder; 60. a nozzle; 71. a suspension seat; 72. a suspension member; 73. a weighing sensor; 80. an electric hoist; 90. Flue gas conveying pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and fig. 2, which are a partial sectional view of a dry deacidification apparatus for waste incineration flue gas according to an embodiment of the present invention and a schematic structural diagram of a nozzle extending into a flue gas conveying pipeline according to an embodiment of the present invention, respectively, the dry deacidification apparatus for waste incineration flue gas includes: the device comprises a support frame 10, a powder storage bin 11, a quick connector 12, a feeding pipe 13, a screw feeder 20, a connecting pipe 14, a discharge control assembly, a discharging pipe 15, an ejector 40, a grinding machine 50 and a nozzle 60.

Referring to fig. 3, which is a sectional view of a partial structure of a dry deacidification apparatus for waste incineration flue gas according to an embodiment of the present invention, a powder storage bin 11 is disposed on a support frame 10, a quick connector 12 is communicated with a top of the powder storage bin 11 through a feeding pipe 13, a bottom of the powder storage bin 11, a connecting pipe 14, a screw feeder 20, a discharging pipe 15, an injector 40, a grinder 50 and a nozzle 60 are sequentially communicated, and a discharge control assembly is connected to the connecting pipe 14 and located between the powder storage bin 11 and the screw feeder 20; the discharging control assembly comprises a valve 31, a star-shaped discharger 32 and a heavy hammer flap valve 33, and the valve 31, the star-shaped discharger 32 and the heavy hammer flap valve 33 are sequentially connected through a connecting pipe 14 in the direction from the bottom of the powder storage bin 11 to the screw feeder 20.

When the powder is supplemented, the feed chute tank car is communicated with the feed pipe 13 through the quick connector, and then the powder is conveyed into the powder storage bin 11, so that the powder in the powder storage bin 11 is supplemented. When the flue gas is purified, the valve 31 is opened, then the ejector 40, the grinding machine 50, the screw feeder 20 and the star-shaped discharger 32 are sequentially started, the powder enters the impeller in the star-shaped discharger 32 after passing through the valve 31 and is uniformly and continuously transmitted, the air pressure on two sides of the star-shaped discharger 32 can be cut off, then the powder reaches the heavy hammer flap valve 33, the valve plate of the heavy hammer flap valve 33 is opened by the gravity after the powder is accumulated, the powder falls after the opening, the valve plate is closed again, and the heavy hammer flap valve 33 can play a role in air locking. After passing through the heavy hammer flap valve 33, the powder sequentially passes through the screw feeder 20 and the discharging pipe 15 and then enters the ejector 40, the powder is blown by the ejector 40 to enter the grinding machine 50, and is ground by the grinding machine 50 to become finer powder, and then the powder is sprayed into the flue gas conveying pipeline 90 by the nozzle 60 to be mixed with flue gas for reaction, so that the flue gas pollution is removed, and the flue gas is purified. Because the ejector 40 can generate negative pressure, the star-shaped discharger 32 and the heavy hammer flap valve 33 can better prevent the air flow generated by the ejector 40 from blowing the powder in the powder storage bin 11, and the influence on the powder conveying is prevented. The structure of the star-shaped discharger 32 and the heavy hammer flap valve 33 can be properly designed according to actual needs, for example, the star-shaped discharger 32 can comprise a motor 23, a shell and a discharging blade, two ends of the shell are communicated with the connecting pipe 14, the discharging blade is rotatably arranged in the shell, and the motor is in transmission connection with the discharging blade; the heavy hammer flap valve 33 can comprise a valve body, a valve plate and a hammer handle, wherein the valve body is communicated with the connecting pipe 14, the valve plate is rotatably arranged in the valve body and can be movably opened and closed, and the hammer handle is connected with the valve plate. The principle of the star discharger 32 and the weight flap valve 33 is well known to those skilled in the art and therefore will not be described herein.

Referring to fig. 4, which is a schematic structural diagram of a top portion of a dry deacidification apparatus for waste incineration flue gas according to an embodiment of the present invention, in some alternative embodiments, a top bin deduster 111 and a pressure release valve 112 are further disposed at the top portion of the powder storage bin 11, and the top bin deduster 111 and the pressure release valve 112 are communicated with the inside of the powder storage bin 11. When the powder is supplemented, after the feeding tank car is communicated with the feeding pipe 13 through the quick connector, the top dust remover 111 is opened, the pressure inside and outside the powder storage bin 11 can be balanced while dust is removed, then the powder is conveyed to the inside of the powder storage bin 11, and when the powder is conveyed, if the pressure inside the powder storage bin 11 exceeds the set value of the pressure release valve 112, the pressure release valve 112 can be automatically opened, so that the pressure inside and outside the powder storage bin 11 is balanced. The structure of the bin top dust remover 111 and the pressure relief valve 112 can be designed appropriately according to actual needs, for example, the bin top dust remover 111 comprises a dust remover body and a dust removing cloth bag arranged in the dust remover body, and the dust remover body is arranged at the top of the powder storage bin 11 and is communicated with the inside of the powder storage bin 11; the pressure relief valve 112 may take the form of a spring loaded pressure relief valve or the like or other type of structure. The operation principle of the top bin duster 111 and the pressure release valve 112 is well known to those skilled in the art and thus will not be described herein.

In some alternative embodiments, a wall vibrator 113 is further disposed on the powder storage bin 11, the wall vibrator 113 may be used to prevent and eliminate blockage of the powder storage bin 11 due to internal friction, deliquescence, electrification, composition segregation, etc., and the wall vibrator 113 may include a vibration motor disposed on an outer wall of the powder storage bin 11.

In some optional embodiments, a radar level gauge 114 and a rotation resistance gauge 115 are further disposed on the powder storage bin 11, the radar level gauge 114 is located at the top of the storage bin, a probe of the radar level gauge extends into the powder storage bin 11, and the rotation resistance gauge 115 is located at the side of the storage bin, and a detection blade of the rotation resistance gauge extends into the powder storage bin 11. The structure and principle of the radar level gauge 114 and the rotation resistance gauge 115 are well known to those skilled in the art and therefore will not be described in detail herein.

In some optional embodiments, the valve 31 is a manual gate valve, which may be appropriately designed according to actual needs, for example, in this embodiment, the manual gate valve includes a housing, a gate, a screw rod, and a rotating disk, the interior of the housing is communicated with the connecting pipe 14, the gate is movably disposed in the housing, the screw rod 22 is in threaded connection with the housing and is fixedly connected with the gate, and the rotating disk is fixedly connected with the screw rod 22.

In some alternative embodiments, the exit opening of the nozzle 60 is flared to facilitate the dispersion of the powder during ejection, facilitating the full reaction of the powder with the flue gas.

In some optional embodiments, the dry deacidification equipment for waste incineration flue gas further comprises a plurality of suspension seats 71, a plurality of suspension members 72 and a plurality of weighing sensors 73, wherein the suspension seats 71 are arranged on the support frame 10, the weighing sensors 73 are connected with the suspension seats 71 in a one-to-one correspondence manner through the suspension members 72, and the suspension members 72 can adopt suspension ropes or suspension rods; in the present embodiment, the support frame is provided with 4 suspension bases 71, 4 hangers 72, and 4 load cells 73. The screw feeder 20 comprises a main body 21, a screw rod 22 and a motor 23, a conveying channel is arranged in the main body 21, the main body 21 is connected with a weighing sensor 73, a feeding hole and a discharging hole are formed in the main body 21, the feeding hole is located at the top of the main body 21, the discharging hole is located at the bottom of the main body 21, the screw rod 22 is arranged in the conveying channel, and the motor 23 is in transmission connection with the screw rod 22. The spiral feeder 20 is weighed by the weighing sensor 73, so that the weight of powder in the spiral feeder 20 is detected, and the feeding speed of the spiral feeder 20 is conveniently adjusted; in the present embodiment, the controller is connected to the motor 23 and the load cell 73 of the screw feeder 20, and the controller receives the weight signal from the load cell 73 and controls the motor 23 of the screw feeder 20 to adjust the feeding speed of the screw feeder 20, and the controller may be a PLC controller or a DCS controller. The connecting pipe 14 is movably connected with the feeding hole, in this embodiment, the connecting pipe 14 is movably connected with the feeding hole through canvas, so that the body can move relative to the connecting pipe 14, of course, the connecting pipe 14 can also be movably connected with the feeding hole through other modes, a sleeve is arranged outside the feeding hole, and the connecting pipe 14 is movably sleeved with the sleeve. The discharge hole is connected with the discharge pipe 15, wherein the discharge pipe 15 is a flexible pipe, so that the discharge pipe 15 and the relative discharge hole are movable, and the situation that the discharge pipe 15 supports the body to prevent the weighing sensor 73 from detecting the weight of the screw feeder 20 is avoided.

Referring to fig. 5, which is a partial structural schematic view of a dry deacidification apparatus for waste incineration flue gas according to an embodiment of the present invention, in some alternative embodiments, an ejector 40 includes a venturi tube 41, an ejection duct 42 and a fan 43, the venturi tube 41 is respectively connected to a side wall of the ejection duct 42 and the blanking pipe 15, one end of the ejection duct 42 is connected to the fan 43, and the other end is connected to the grinder 50. The venturi 41 has low resistance to fluid flow, good stability, and no clogging phenomenon after long-term use, and is beneficial for the blower 43 to inject powder into the grinder 50 and to inject powder into the flue from the nozzle 60.

In some optional embodiments, an electric hoist 80 is further disposed on the supporting frame 10, so as to facilitate hoisting for equipment maintenance and hoisting operation during manual loading.

In some alternative embodiments, a ladder 16 surrounding the support frame 10 is also provided on the support frame 10.

The aforesaid a dry process deacidification equipment for msw incineration flue gas can use on gas cleaning system, this gas cleaning system includes: flue gas conveying pipeline 90, dust remover and as above said a dry process deacidification equipment for msw incineration flue gas, flue gas conveying pipeline 90 communicates with the import of dust remover, and in nozzle 60 stretched into flue gas conveying pipeline 90, the powder sprayed into flue gas conveying pipeline 90 through nozzle 60, mixed with the flue gas that generates after the msw incineration, produced after powder and flue gas produce the reaction and carried in the dust remover, the dust remover can adopt sack cleaner etc..

In the description of the present invention, "a plurality" means 1 or more than 1 unless otherwise specified.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A dry deacidification equipment for msw incineration flue gas which characterized in that includes: the device comprises a support frame, a powder storage bin, a quick connector, a feeding pipe, a screw feeder, a connecting pipe, a discharging control assembly, a discharging pipe, an ejector, a grinding machine and a nozzle;

2. The dry deacidification equipment for waste incineration flue gas according to claim 1, characterized in that: the top of the powder storage bin is also provided with a bin top dust remover and a pressure release valve, and the bin top dust remover and the pressure release valve are communicated with the inside of the powder storage bin.

3. The dry deacidification equipment for waste incineration flue gas according to claim 1, characterized in that: and a bin wall vibrator is also arranged on the powder storage bin.

4. The dry deacidification equipment for waste incineration flue gas according to claim 1, characterized in that: the powder storage bin is further provided with a radar level gauge and a rotation resistance level gauge, the radar level gauge is located at the top of the storage bin, a detection head of the radar level gauge stretches into the inside of the powder storage bin, the rotation resistance level gauge is located on the side face of the storage bin, and a detection blade of the rotation resistance level gauge stretches into the inside of the powder storage bin.

5. The dry deacidification equipment for waste incineration flue gas according to claim 1, characterized in that: the valve is a manual gate valve.

6. The dry deacidification equipment for waste incineration flue gas according to claim 1, characterized in that: the exit port of the nozzle is in a bell mouth shape.

7. The dry deacidification plant for waste incineration flue gas according to any of the claims 1 to 6, characterized in that: the dry deacidification equipment for the waste incineration flue gas further comprises a plurality of suspension seats, a plurality of suspension parts and a plurality of weighing sensors, wherein the suspension seats are arranged on the support frame, and the weighing sensors are connected with the suspension seats in a one-to-one correspondence mode through the suspension parts;

8. The dry deacidification plant for waste incineration flue gas according to any of the claims 1 to 6, characterized in that: the sprayer includes venturi, injection pipeline and fan, venturi respectively with injection pipeline with the unloading union coupling, the fan passes through injection pipeline with it connects to grind the machine.

9. The dry deacidification plant for waste incineration flue gas according to any of the claims 1 to 6, characterized in that: an electric hoist is further arranged on the supporting frame.

10. A flue gas purification system, comprising: a flue gas conveying pipe, a dust remover and a dry deacidification device for waste incineration flue gas as claimed in any one of claims 1 to 9, wherein the flue gas conveying pipe is communicated with an inlet of the dust remover, and the nozzle extends into the flue gas conveying pipe.