CN216395894U

CN216395894U - Boiler flue gas SCR denitrification facility

Info

Publication number: CN216395894U
Application number: CN202122684897.2U
Authority: CN
Inventors: 陈治国
Original assignee: Jiangsu Tianlai Environmental Protection Engineering Co ltd
Current assignee: Jiangsu Tianlai Environmental Protection Engineering Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-04-29
Anticipated expiration: 2031-11-04

Abstract

The utility model relates to the technical field of boiler flue gas purification, in particular to a boiler flue gas SCR denitration device, and provides a scheme aiming at the problems in the background art. When the smoke enters the box body through the air inlet pipe, the reducing gas enters the box body through the inlet pipe to be mixed with the smoke, meanwhile, the servo motor rotates to drive the rotating rod to rotate, the rotating rod drives the connecting rod to rotate, the rotating connecting rod drives the airflow in the box body to rotate, so that the smoke and the reducing gas are quickly mixed in the box body, and the smoke and the reducing gas can quickly and fully react.

Description

Boiler flue gas SCR denitrification facility

Technical Field

The utility model relates to the technical field of boiler flue gas purification, in particular to a boiler flue gas SCR denitration device.

Background

NOx is a major atmospheric pollutant which, together with hydrocarbons, can cause photochemical pollution under intense light; NOx discharged into the atmosphere is a main cause of acid rain, seriously harms the ecological environment, is an important factor frequently occurring in recent haze meteorological disasters, and seriously harms the natural environment and the health of human beings.

Selective Catalytic Reduction (SCR) refers to the use of a reducing agent (e.g., NH3, liquid ammonia, urea) to "selectively" react with NOx in flue gas and produce non-toxic and pollution-free N2 and H2O under the action of a catalyst.

Most of denitration devices for current boiler flue gas are connected on an exhaust pipeline and spray a reducing agent with specific concentration, so that the aim of reducing nitrogen oxides in the flue gas is fulfilled, the traditional SCR denitration device cannot ensure the rapid and sufficient mixing of ammonia gas and boiler flue gas, and the flue gas is not treated and is discharged into the atmosphere together with the gas, so that the ideal flue gas treatment effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a boiler flue gas SCR denitration device.

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

boiler flue gas SCR denitrification facility, the power distribution box comprises a box body, the one end of box is pegged graft and is fixed with the intake pipe, the bottom of box is fixed with out the water bucket, and goes out the bottom grafting of water bucket and be fixed with the outlet pipe, the inside of box is provided with the mixing mechanism, the mixing mechanism includes servo motor, runs through the dwang and the equidistance of rotating connection in box other end inner wall and distributes in the connecting rod of dwang outer wall all around, the top of mixing mechanism is provided with the inlet pipe of pegging graft fixedly with the box, the top other end grafting of box is fixed with the outlet duct.

Preferably, the bottom of the box body is provided with an opening matched with the specification of the top of the water outlet hopper, and the water outlet pipe is of a bent structure.

Preferably, the servo motor is installed on the outer wall of one side of the box body away from the air inlet pipe, and an output shaft of the servo motor is fixedly connected with one end of the rotating rod through a coupler.

Preferably, the outer wall one end that servo motor was kept away from to the dwang rotates and is connected with the lantern ring, and the both sides outer wall of the lantern ring all is fixed with the dead lever, and the one end that the lantern ring was kept away from to two dead levers all is fixed with the inner wall connection of box.

Preferably, the feed pipe is of an L-shaped structure, a pipe plug is inserted into one end of the feed pipe, and spray heads distributed at equal intervals are inserted into the bottom of the feed pipe.

Preferably, the top of the box body is provided with a condenser, and the condenser is fixedly connected with the air outlet pipe in an inserting mode.

The utility model has the beneficial effects that:

when the flue gas passes through the intake pipe and gets into in the box, reducing gas mixes with the flue gas in getting into the box through the inlet pipe, and servo motor rotates simultaneously and drives the dwang and rotate, and the dwang drives the connecting rod and rotates, and rotatory connecting rod drives the air current in the box and rotates, makes flue gas and reducing gas carry out the flash mixed in the box, makes flue gas and reducing gas can be fast enough carry out the abundant reaction more.

Drawings

FIG. 1 is a schematic sectional view of the whole structure of a boiler flue gas SCR denitration device provided by the utility model;

FIG. 2 is a schematic structural diagram of a mixing mechanism of the boiler flue gas SCR denitration device provided by the utility model;

fig. 3 is a schematic structural diagram of a feeding pipe of the boiler flue gas SCR denitration device provided by the utility model.

In the figure: the device comprises a box body 1, an air inlet pipe 2, a water outlet hopper 3, a water outlet pipe 4, a mixing mechanism 5, a servo motor 6, a rotating rod 7, a connecting rod 8, a lantern ring 9, a fixing rod 10, an inlet pipe 11, a spray head 12, a pipe plug 13, a condenser 14 and an air outlet pipe 15.

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.

Example 1:

referring to fig. 1-3, a boiler flue gas SCR denitration device comprises a box body 1, an air inlet pipe 2 is fixedly inserted into one end of the box body 1, a water outlet hopper 3 is fixedly arranged at the bottom of the box body 1, a water outlet pipe 4 is fixedly inserted into the bottom of the water outlet hopper 3, an opening matched with the top specification of the water outlet hopper 3 is formed in the bottom of the box body 1, the water outlet pipe 4 is of a bent structure, a mixing mechanism 5 is arranged inside the box body 1, the mixing mechanism 5 comprises a servo motor 6, a rotating rod 7 and a connecting rod 8, the rotating rod 7 is connected to the inner wall of the other end of the box body 1 in a penetrating and rotating manner, the servo motor 6 is arranged on the outer wall of one side of the box body 1 away from the air inlet pipe 2, an output shaft of the servo motor 6 is fixedly connected with one end of the rotating rod 7 through a coupler, the connecting rods 8 are equidistantly distributed on the outer wall around the rotating rod 7, and a feed pipe 11 fixedly inserted into the box body 1 is arranged at the top of the mixing mechanism 5, the top other end of box 1 is pegged graft and is fixed with outlet duct 15, when the flue gas got into in the box 1 through intake pipe 2, reducing gas mixes with the flue gas in getting into box 1 through inlet pipe 11, servo motor 6 rotates simultaneously and drives dwang 7 and rotate, dwang 7 drives connecting rod 8 and rotates, rotatory connecting rod 8 drives the air current in the box 1 and rotates, make flue gas and reducing gas carry out the flash mixed in box 1, make flue gas and reducing gas can be more quick carry out the abundant reaction.

Example 2:

the embodiment is optimized on the basis of embodiment 1, and specifically comprises the following steps:

the feeding pipe 11 is of an L-shaped structure, a pipe plug 13 is inserted into one end of the feeding pipe 11, and spray heads 12 which are distributed at equal intervals are inserted into the bottom of the feeding pipe 11;

through setting up inlet pipe 11 to L shape structure, make inlet pipe 11 be located the volume of box 1 and become bigger, seal the bottom of inlet pipe 11, reducing gas passes through a plurality of shower nozzles 12 blowout, makes reducing gas can be more for the contact of dispersed and flue gas, make reducing gas and flue gas reaction more abundant.

Example 3:

a condenser 14 is arranged at the top of the box body 1, and the condenser 14 is fixedly inserted with an air outlet pipe 15;

the water vapor in the air is liquefied and condensed through the condenser 14, the water vapor is reduced to enter the exhaust pipe 15, the wetting of the exhaust pipe 15 by the water vapor is reduced, the inner wall of the exhaust pipe 15 is not easy to adsorb dust in the air, the cleanness of the inner wall of the exhaust pipe 15 is favorably kept, and the gas emission is favorably realized.

The working principle is as follows: when the flue gas passes through in intake pipe 2 gets into box 1, reducing gas passes through in the inlet pipe 11 gets into box 1 and mixes with the flue gas by the downward blowout of a plurality of shower nozzles 12, servo motor 6 rotates and drives dwang 7 and rotate simultaneously, dwang 7 drives connecting rod 8 and rotates, rotatory connecting rod 8 drives the air current in the box 1 and rotates, make flue gas and reducing gas carry out the flash mixed in box 1, the flue gas passes through outlet duct 15 discharge box 1 with the produced gas of reducing gas reaction, the water of production flows in outlet pipe 4 along outlet pipe 3, when outlet pipe 4 curved portion's water accumulation is enough much, unnecessary water just can follow outlet pipe 4 and flow, condenser 14 condenses into the water droplet with the steam in the gas simultaneously, and drop along outlet duct 15 in the outlet pipe 3.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. Boiler flue gas SCR denitrification facility, including box (1), its characterized in that, the one end of box (1) is pegged graft and is fixed with intake pipe (2), the bottom of box (1) is fixed with out water bucket (3), and goes out the bottom grafting of water bucket (3) and be fixed with outlet pipe (4), the inside of box (1) is provided with mixing mechanism (5), mixing mechanism (5) include servo motor (6), run through rotate connect in dwang (7) and the equidistance of box (1) other end inner wall distribute in dwang (7) connecting rod (8) of outer wall all around, the top of mixing mechanism (5) is provided with inlet pipe (11) of pegging graft fixedly with box (1), the top other end grafting of box (1) is fixed with outlet duct (15).

2. The boiler flue gas SCR denitration device of claim 1, wherein an opening matched with the top specification of the water outlet hopper (3) is formed at the bottom of the box body (1), and the water outlet pipe (4) is of a bent structure.

3. The boiler flue gas SCR denitration device of claim 1, wherein the servo motor (6) is installed on the outer wall of one side of the box body (1) far away from the air inlet pipe (2), and an output shaft of the servo motor (6) is fixedly connected with one end of the rotating rod (7) through a coupler.

4. The boiler flue gas SCR denitration device of claim 3, wherein one end of the rotating rod (7) far away from the outer wall of the servo motor (6) is rotatably connected with a lantern ring (9), the outer walls of two sides of the lantern ring (9) are both fixed with fixing rods (10), and one ends of the two fixing rods (10) far away from the lantern ring (9) are both connected and fixed with the inner wall of the box body (1).

5. The boiler flue gas SCR denitration device according to claim 1, wherein the feeding pipe (11) is L-shaped, a pipe plug (13) is inserted into one end of the feeding pipe (11), and spray heads (12) are inserted into the bottom of the feeding pipe (11) and are distributed at equal intervals.

6. The boiler flue gas SCR denitration device of claim 1, wherein a condenser (14) is arranged at the top of the box body (1), and the condenser (14) is fixedly inserted into the gas outlet pipe (15).