CN213193208U - Waste incineration power generation flue gas denitration system - Google Patents

Abstract

The utility model provides a waste incineration power generation flue gas deNOx systems, includes: the air outlet at one side of the top end of the boiler is communicated with an SCR reactor arranged outside through a pipeline, and ammonia gas and part of air generated in the SCR reactor enter a gasifier arranged outside through the pipeline; the technical key points are that a plurality of plugboard groups are designed in the electric dust collector, catalyst modules in the plugboard groups can be flexibly replaced, and meanwhile, movable plates on two sides of the plugboard groups are utilized, the rotatable movable plates can automatically adjust the angles of the plugboard groups, so that gaps between the plugboard groups and the inner wall of the SCR reactor are avoided, and gas can comprehensively pass through the corresponding catalyst modules; the honeycomb duct that distributes that inclines is designed to the position department of the dust outlet of electrostatic precipitator for can be because dead weight and air blower produce the air current from the exhaust smoke and dust of dust outlet, make the smoke and dust can assemble and collect in the dust bag, avoid the smoke and dust to take place to leak, also be convenient for simultaneously unify the collection processing to the smoke and dust.

Description

Waste incineration power generation flue gas denitration system

Technical Field

The utility model belongs to the technical field of refuse treatment, specifically a waste incineration power generation flue gas denitration system.

Background

The garbage is solid waste generated in daily life and production of human beings, has large discharge amount, complex and various components, pollution, resource and socialization, needs harmless, resource, reduction and socialization treatment, and can pollute the environment, influence the environmental sanitation, waste resources, destroy the safety of production and life and destroy the social harmony if the garbage cannot be properly treated. The garbage disposal is to rapidly remove the garbage, perform harmless treatment and finally reasonably utilize the garbage.

Present most direct mode is for unifying incineration disposal to rubbish, and can produce a large amount of flue gases when burning rubbish, directly emits into the atmosphere and can cause environmental pollution, uses the dry-type deNOx systems to carry out purification treatment to the flue gas now, however this system probably appears following problem when using: firstly, an SCR reactor is needed when the catalytic treatment is carried out on the flue gas, and a catalyst module in the existing SCR reactor is not convenient to flexibly replace and needs to be disassembled for realizing; secondly, when the electric dust collector is used, the smoke dust is discharged and collected and scattered possibly, so that the environment where workers are located is polluted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a waste incineration power generation flue gas denitration system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a waste incineration power generation flue gas deNOx systems, includes:

the air outlet at one side of the top end of the boiler is communicated with an SCR reactor arranged outside through a pipeline, and ammonia gas and part of air generated in the SCR reactor enter a gasifier arranged outside through the pipeline;

the ammonia storage tank is connected with the gasifier through an air pipe, and a second fan is assembled in the middle of the air pipe; and

an electric precipitator, the trachea mid-mounting of being connected between electric precipitator and the SCR reactor has the air preheater, and is connected through setting up the trachea between air preheater and the boiler, the supporting inlet port department of air preheater is provided with first fan, the draught fan is installed to one side of electric precipitator, the draught fan is used for introducing the air that produces in the electric precipitator to external chimney.

Preferably, at least two groups of inserting plate groups are installed in the SCR reactor in an inserting mode, and a rectifying plate is arranged on the position, above each inserting plate group, of the inner wall of the SCR reactor.

Preferably, the inner wall welding of SCR reactor has the fagging that is used for supporting the picture peg group, the front side welding of picture peg group has the baffle, two sets of fly leaf that can overturn are installed to the both sides of picture peg group, and the inside cartridge of picture peg group has columniform catalyst module.

Preferably, the surface cover of fly leaf one side is equipped with the rubber sleeve, and is connected through setting up the pivot between fly leaf and the picture peg group.

Preferably, the electric dust collector comprises at least two groups of dust removing boxes, a guide pipe for connecting the dust outlets matched with the dust removing boxes, an electric valve installed on each dust outlet, and an air blower and a dust bag assembled at two ends of the guide pipe.

Preferably, the angle formed by the draft tube and the horizontal plane is 15-30 degrees.

Preferably, a transition tank is assembled in the middle of a gas pipe for connecting the gasifier and the ammonia storage tank, and a cooling pipe is wound on the surface of the transition tank.

Compared with the prior art, the utility model provides a waste incineration power generation flue gas denitration system has following beneficial effect:

firstly, a plurality of plugboard groups are designed in the electric dust collector, catalyst modules in the plugboard groups can be flexibly replaced, meanwhile, the movable plates on two sides of the plugboard groups are utilized, the movable plates can automatically adjust the angles of the plugboard groups in a turnover mode, gaps between the plugboard groups and the inner wall of the SCR reactor are avoided, and gas can comprehensively pass through the corresponding catalyst modules;

and secondly, a transition tank is designed between the gasifier and the ammonia storage tank, so that gaseous ammonia can be filtered and cooled, and meanwhile, when the ammonia storage tank is replaced, the normal use of the whole system cannot be influenced, and the transition tank can be used as a tank body for temporarily storing ammonia.

Thirdly, the honeycomb duct that the design slope distributes in the position department of the dust outlet of electrostatic precipitator for can be because dead weight and air blower produce the air current from the exhaust smoke and dust of dust outlet, make the smoke and dust can assemble the dust bag and collect, avoid the smoke and dust to take place to leak, also be convenient for simultaneously to the smoke and dust unify the collection and handle.

Drawings

Fig. 1 is a schematic view of the connection state of the whole structure of the present invention;

fig. 2 is a top view of the structure of the insert plate group of the present invention;

FIG. 3 is a schematic view of the whole structure of the insertion plate set of the present invention;

FIG. 4 is a sectional view of the internal structure of the SCR reactor of the present invention;

fig. 5 is a schematic structural view of the electric dust remover of the present invention.

Reference numerals: 1. a boiler; 2. an air preheater; 3. an SCR reactor; 4. a first fan; 5. a second fan; 6. an electric dust collector; 61. a dust removal box; 62. a flow guide pipe; 63. an electrically operated valve; 64. a blower; 65. a dust collection bag; 7. a gasifier; 8. a transition tank; 81. a cooling tube; 9. an ammonia storage tank; 10. an induced draft fan; 11. a group of plugboards; 111. a baffle plate; 112. a movable plate; 113. a catalyst module; 12. a supporting plate; 13. a rotating shaft; 14. a rubber sleeve; 15. a rectifying plate.

Detailed Description

The following description further explains the specific embodiment of the flue gas denitration system for waste incineration power generation according to the attached drawing 1. The utility model relates to a waste incineration power generation flue gas deNOx systems is not limited to the description of following embodiment.

This embodiment provides a concrete structure of msw incineration power generation flue gas denitration system, as shown in fig. 1-5, a msw incineration power generation flue gas denitration system includes:

a boiler 1, wherein an air outlet at one side of the top end of the boiler is communicated with an SCR reactor 3 arranged outside through a pipeline, and ammonia gas and partial air generated in the SCR reactor 3 enter a gasifier 7 arranged outside through a pipeline;

an ammonia storage tank 9 which is connected with the gasifier 7 through an air pipe, and the middle part of the air pipe is provided with a second fan 5; and

an electrostatic precipitator 6, the trachea mid-mounting of being connected between electrostatic precipitator 6 and the SCR reactor 3 has air preheater 2, and is connected through setting up the trachea between air preheater 2 and the boiler 1, and the air inlet department that air preheater 2 is supporting is provided with first fan 4, and draught fan 10 is installed to one side of electrostatic precipitator 6, and draught fan 10 is used for introducing the air that produces in the electrostatic precipitator 6 in the chimney of external world.

As shown in fig. 2 to 4, at least two groups of inserting plate groups 11 are inserted into the SCR reactor 3, and a rectifying plate 15 is disposed on the inner wall of the SCR reactor 3 above each inserting plate group 11;

specifically, the hole slots preset on the surface of the rectifying plate 15 and the slot body for assembling the catalyst module 113 are in a one-to-one up-and-down corresponding position relationship; meanwhile, the rectification plate 15 rectifies the flue gas entering the SCR reactor 3.

As shown in fig. 2, a supporting plate 12 for supporting the insert plate group 11 is welded on the inner wall of the SCR reactor 3, a baffle 111 is welded on the front side of the insert plate group 11, two groups of movable plates 112 capable of being turned over are installed on two sides of the insert plate group 11, and a cylindrical catalyst module 113 is inserted in the insert plate group 11.

As shown in fig. 3, a rubber sleeve 14 is sleeved on a surface of one side of the movable plate 112, and the movable plate 112 is connected to the board inserting set 11 by a rotating shaft 13.

The plurality of the plugboard groups 11 are designed in the electric dust collector 6, so that the catalyst modules 113 in the plugboard groups 11 can be flexibly replaced, the movable boards 112 on two sides of the plugboard groups 11 are utilized, the reversible movable boards 112 can automatically adjust the angles of the plugboard groups, gaps between the plugboard groups 11 and the inner wall of the SCR reactor 3 are avoided, and the gas can completely pass through the corresponding catalyst modules 113.

Specifically, torsion springs are installed on two sides of the rotating shaft 13, after the plugboard group 11 is inserted into a notch preset in the surface of the electric dust collector 6, the rear side of the plugboard group 11 is erected on the surface of a corresponding supporting plate 12, meanwhile, the movable plates 112 on two sides of the plugboard group 11 are unfolded under the action of the restoring force of the torsion springs, the rubber sleeve 14 is made to be attached to the inner wall of the SCR reactor 3, and finally, screws are assembled on the surface of the baffle 111, so that the whole plugboard group 11 and the SCR reactor 3 are fixedly connected.

As shown in fig. 5, the electric dust collector 6 includes at least two sets of dust boxes 61, a flow guide pipe 62 for connecting the dust outlets associated with the dust boxes 61, an electric valve 63 mounted to each dust outlet, and an air blower 64 and a dust bag 65 mounted at two ends of the flow guide pipe 62.

As shown in FIG. 5, the draft tube 62 forms an angle of 15-30 with the horizontal.

The flow guide pipe 62 which is obliquely distributed is designed at the position of the dust outlet of the electric dust collector 6, so that the smoke dust discharged from the dust outlet can generate air flow due to dead weight and the air blower 64, the smoke dust can be collected in the dust collection bag 65, the leakage of the smoke dust is avoided, and the smoke dust can be collected and treated in a unified manner.

As shown in fig. 1, a transition tank 8 is installed at the middle of a gas pipe for connecting the gasifier 7 and the ammonia storage tank 9, and a cooling pipe 81 is wound around the surface of the transition tank 8.

Above-mentioned design transition jar 8 between vaporizer 7 and ammonia storage tank 9 can filter the cooling treatment to gaseous ammonia, is changing the operation to ammonia storage tank 9 simultaneously, can not influence entire system's normal use, and transition jar 7 at this moment can regard as the jar body of temporary storage ammonia to use.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (6)

1. The utility model provides a waste incineration power generation flue gas deNOx systems which characterized in that includes:

a boiler (1), wherein an air outlet at one side of the top end of the boiler is communicated with an SCR reactor (3) arranged outside through a pipeline, and ammonia gas and partial air generated in the SCR reactor (3) enter a gasifier (7) arranged outside through the pipeline;

an ammonia storage tank (9) which is connected with the gasifier (7) through an air pipe, and the middle part of the air pipe is provided with a second fan (5); and

the electric dust remover (6), an air preheater (2) is arranged in the middle of an air pipe connected between the electric dust remover (6) and the SCR reactor (3), the air preheater (2) is connected with the boiler (1) through the air pipe, a first fan (4) is arranged at an air inlet matched with the air preheater (2), an induced draft fan (10) is arranged on one side of the electric dust remover (6), and the induced draft fan (10) is used for introducing air generated in the electric dust remover (6) into an external chimney; the electric dust collector (6) comprises at least two groups of dust removing boxes (61), a guide pipe (62) used for connecting the dust removing boxes (61) with the matched dust outlets, electric valves (63) installed on each dust outlet, and air blowers (64) and dust collecting bags (65) assembled at two ends of the guide pipe (62).

2. The waste incineration power generation flue gas denitration system of claim 1, characterized in that: at least two groups of plugboard groups (11) are installed in the SCR reactor (3) in an inserting mode, and a rectifying board (15) is arranged at the position, located above each plugboard group (11), of the inner wall of the SCR reactor (3).

3. The waste incineration power generation flue gas denitration system of claim 2, characterized in that: the inner wall welding of SCR reactor (3) has fagging (12) that are used for supporting picture peg group (11), the front side welding of picture peg group (11) has baffle (111), two sets of fly leaf (112) that can overturn are installed to the both sides of picture peg group (11), and the inside cartridge of picture peg group (11) has columniform catalyst module (113).

4. The waste incineration power generation flue gas denitration system of claim 3, characterized in that: the rubber sleeve (14) is sleeved on the surface of one side of the movable plate (112), and the movable plate (112) is connected with the inserting plate group (11) through a rotating shaft (13).

5. The waste incineration power generation flue gas denitration system of claim 1, characterized in that: the angle formed by the draft tube (62) and the horizontal plane is 15-30 degrees.

6. The waste incineration power generation flue gas denitration system of claim 1, characterized in that: the middle part of an air pipe for connecting the gasifier (7) and the ammonia storage tank (9) is provided with a transition tank (8), and the surface of the transition tank (8) is wound with a cooling pipe (81).

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