CN213590149U

CN213590149U - SCR (Selective catalytic reduction) denitration device for boiler flue gas

Info

Publication number: CN213590149U
Application number: CN202022397418.4U
Authority: CN
Inventors: 吴学兵; 吴学锋; 魏洪亮; 葛均上
Original assignee: Shandong Shoufeng Environmental Protection Equipment Co ltd
Current assignee: Shandong Shoufeng Environmental Protection Equipment Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-02
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a SCR denitrification facility of boiler flue gas, exhaust duct including boiler upper end fixed connection, exhaust duct upper end threaded connection has the denitration pipeline, denitration pipeline inside wall sliding connection has the drum, the supporting slide mechanism who is equipped with the slip drum of drum and denitration pipeline, the drum inside wall passes through connecting block fixedly connected with cylinder, cylinder upper end fixed surface is equipped with the box, the cylinder both sides are equipped with the shower nozzle, the supporting reciprocating mechanism who makes the shower nozzle reciprocate that is equipped with in the box, the supporting denitration mechanism who gets rid of nitrogen oxide in the middle of the flue gas that is equipped with of shower nozzle, two respectively two backup pads of fixedly connected with in the box upper end, the supporting clean mechanism who is equipped with clean denitration pipeline of backup pad, denitration pipeline upper end fixedly connected with pipeline of giving vent to anger. The utility model discloses it is rational in infrastructure, it can the efficient carry out the efficient denitration to the flue gas that the boiler produced to can dismantle the mechanism wherein and wash.

Description

SCR (Selective catalytic reduction) denitration device for boiler flue gas

Technical Field

The utility model relates to a flue gas treatment technical field especially relates to a SCR denitrification facility of boiler flue gas.

Background

The SCR denitration technology has high removal efficiency, is suitable for the current environmental protection requirement, is highly regarded and widely applied in the power industry, is one of the most applied and mature technologies in developed countries with strict environmental protection requirements, such as Germany, Japan, America, Canada, Netherlands, Austria, Sweden, Denmark and the like, and can be inevitably used as the main denitration technology of coal-fired boilers of thermal power stations in China and be more and more widely applied according to the experience of the developed countries.

But denitrification facility of present boiler flue gas is mostly fixed in exhaust duct, spouts the reductant of specific concentration through the water tank of outside to reach nitrogen oxide's in the reduction flue gas purpose, but contain impurity in the flue gas in the boiler mostly, long-term impurity is piled up and is leaded to reductant surface to be sheltered from easily, influences nitrogen oxide's reduction, to above-mentioned condition, then needs the SCR denitrification facility of boiler flue gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the SCR denitrification facility of boiler flue gas that proposes, it can the efficient carry out the efficient denitration to the flue gas that the boiler produced to can dismantle the mechanism wherein and wash.

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

the utility model provides a SCR denitrification facility of boiler flue gas, includes boiler upper end fixed connection's exhaust duct, exhaust duct upper end threaded connection has the denitration pipeline, denitration pipeline inside wall sliding connection has the drum, the supporting slide mechanism who is equipped with the slip drum of drum and denitration pipeline, the drum inside wall passes through connecting block fixedly connected with cylinder, cylinder upper end fixed surface is equipped with the box, the cylinder both sides are equipped with the shower nozzle, the supporting reciprocating mechanism who makes the shower nozzle reciprocate that is equipped with in the box, the supporting denitration mechanism who gets rid of nitrogen oxide in the middle of the flue gas that is equipped with of shower nozzle, two of box upper end difference two backup pads, two the supporting clean mechanism who is equipped with clean denitration pipeline of backup pad, denitration pipeline upper end fixedly connected with pipeline of giving vent.

Preferably, the sliding mechanism comprises a T-shaped sliding block fixedly connected with two ends of the cylinder, a sliding groove matched with the T-shaped sliding block is formed in the inner side wall of the denitration pipeline, two bolts are arranged on the outer side of the denitration pipeline, penetrate through the denitration pipeline and are in threaded connection with the T-shaped sliding block, and a telescopic rod is fixedly connected with the lower end of the cylinder.

Preferably, reciprocating mechanism includes the motor of box internal fixed connection, the cylinder lateral wall is opened there is the bar groove, the terminal reciprocal lead screw that runs through box and fixedly connected with of motor output shaft, reciprocal lead screw rotates with bar groove lateral wall to be connected, the cover is equipped with the lead screw cover with bar groove sliding connection on the reciprocal lead screw, lead screw cover fixedly connected with arc, arc and shower nozzle fixed connection.

Preferably, the denitration mechanism comprises a net cage fixedly connected with the inner side wall of the cylinder, the denitration reducing agent is filled in the net cage, the side wall of the denitration pipeline is fixedly connected with a water tank, the lower end of the water tank is fixedly connected with a water pump, one end of the water pump is communicated with the water tank, the other end of the water pump is connected with a water pipe, and the water pipe extends into the denitration pipeline and is fixedly connected with the spray head.

Preferably, the cleaning mechanism comprises two supporting plates, cleaning rods are rotatably connected to the two supporting plates respectively, the tail ends of the cleaning rods are rotatably connected with arc-shaped cleaning plates, the other ends of the cleaning rods are rotatably connected with connecting blocks, and the connecting blocks are provided with a touch mechanism for starting the cleaning mechanism in a matching manner.

Preferably, the touching mechanism comprises a connecting block and a spring between the box bodies, the upper end of the connecting block is fixedly connected with a supporting rod, and the tail end of the supporting rod is abutted against the lower end of the air outlet pipeline.

Compared with the prior art, the utility model, its beneficial effect does:

1. the disassembly of the inner cylinder is realized through the sliding mechanism, so that the mechanism and the denitration reducing agent in the middle can be cleaned, the integral denitration efficiency is improved, the reduction of nitrogen oxides in the middle of generating flue gas of the boiler is realized through the denitration mechanism, and the content of the nitrate in the flue gas is reduced.

2. The reciprocating mechanism realizes the up-and-down reciprocating movement of the spray head, so that the denitration efficiency of the whole device is more efficient, the cleaning of the inner wall of the cylinder is realized through the cleaning mechanism, and impurities in the cylinder are discharged out of the cylinder.

Drawings

Fig. 1 is a schematic structural view of an SCR denitration device for boiler flue gas according to the present invention;

fig. 2 is a schematic structural view of a sliding mechanism of an SCR denitration device for boiler flue gas according to the present invention;

fig. 3 is the utility model provides a boiler flue gas's SCR denitrification facility's A department enlargies the schematic diagram.

In the figure: the denitration device comprises a denitration pipeline 1, an exhaust pipeline 2, an air outlet pipeline 3, a cylinder 4, a supporting plate 5, a telescopic rod 6, a water tank 7, a water pump 8, a water pipe 9, a net cage 10, a cylinder 11, an arc plate 12, a spray head 13, a reciprocating screw rod 14, a box body 15, a spring 16, a connecting block 17, a cleaning rod 18, a pushing rod 19 and a sliding block 20T-shaped.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1-3, an SCR denitrification facility of boiler flue gas, exhaust duct 2 including boiler upper end fixed connection, exhaust duct 2 upper end threaded connection has denitration pipeline 1, denitration pipeline 1 inside wall sliding connection has drum 4, the supporting slide mechanism who slides drum 4 that is equipped with of drum 4 and denitration pipeline 1, slide mechanism includes the T shape slider 20 of drum 4 both ends fixed connection, denitration pipeline 1 inside wall is equipped with the spout of cooperation T shape slider 20, denitration pipeline 1 outside is equipped with two bolts, two bolts run through denitration pipeline 1 and with T shape slider 20 threaded connection, drum 4 lower extreme fixedly connected with telescopic link 6, the dismantlement of inside drum 4 has been realized through slide mechanism, make mechanism and denitration reductant in the middle of can be washd, improve the efficiency of whole denitration.

4 inside walls of drum pass through bar-shaped piece fixedly connected with

cylinder

11, 11 fixed surface in upper end of cylinder are equipped with

box

15, 11 both sides of cylinder are equipped with shower nozzle 13, the supporting reciprocating mechanism who makes shower nozzle 13 reciprocate that is equipped with in the box 15, reciprocating mechanism includes box 15 internal fixed connection's motor, 11 lateral walls of cylinder open there is the bar groove, motor output shaft end runs through box 15 and the reciprocal lead screw 14 of fixedly connected with, reciprocal lead screw 14 rotates with bar groove lateral wall to be connected, the cover is equipped with the lead screw cover with bar groove sliding connection on the reciprocal lead screw 14, lead screw cover fixedly connected with arc 12,

arc

12 and 13 fixed connection of shower nozzle, the up-and-down reciprocating motion of shower nozzle 13 has been realized through reciprocating mechanism, make whole device denitration efficiency more high.

The supporting denitration mechanism who gets rid of nitrogen oxide in the middle of the flue gas that is equipped with of shower nozzle 13, denitration mechanism includes 4 inside wall fixed connection's of drum box 10, the intussuseption of box 10 is filled with the denitration reductant, 1 lateral wall fixedly connected with water tank 7 of denitration pipeline, 7 lower extreme fixedly connected with water pump 8 of water tank, 8 one end of water pump and 7 intercommunications of water tank, 8 other ends of water pump are connected with water pipe 9, water pipe 9 extend to 1 inside and with shower nozzle 13 fixed connection of denitration pipeline, through denitration mechanism realized realizing the reduction to the nitrogen oxide in the middle of the boiler production flue gas, the.

Two backup pads 5 of box 15 upper end fixedly connected with respectively, the supporting clean mechanism that is equipped with clean denitration pipeline 1 of two backup pads 5, clean mechanism includes rotate respectively on two backup pads 5 clean pole 18 of connecting, 18 ends of clean pole all rotate and are connected with the clean board of arc, and two 18 other ends of clean pole all rotate and connect connecting block 17, have realized the clearance to 4 inner walls of drum through clean mechanism for impurity discharge outside drum 4 in the drum 4.

The supporting touching mechanism that is equipped with the clean mechanism of start-up of connecting block 17, touching mechanism include connecting block 17 and box 15 between spring 16, connecting block 17 upper end fixedly connected with supports pole 19, supports the 3 lower extremes of pole 19 end and the pipeline of giving vent to anger and offsets, denitration pipeline 1 upper end fixedly connected with pipeline of giving vent to anger 3, makes clean mechanism can take out by oneself in the middle of taking out the process through touching mechanism.

When the utility model is used, when the boiler is used, the waste gas generated in the boiler is discharged out of the boiler through the exhaust pipeline 2 and reaches the denitration pipeline 1, at the moment, the motor in the box body 15 and the water pump 8 at the lower end of the water tank 7 are started, the urea solution in the water tank 7 is uniformly sprayed into the net cage 10 filled with the reducing agent through the spray head 13 by the water pump 8, at the moment, under the action of the motor, the reciprocating lead screw 14 rotates to drive the arc-shaped plate 12 to rotate, so that the arc-shaped plate 12 drives the spray head 13 fixed at the upper end to rotate up and down, the spray head 13 continuously reciprocates up and down, the waste gas generated in the boiler can fully react with the urea solution in the net cage 10 under the action of the reducing agent, the effect of reducing the nitrogen oxide in the waste gas is achieved, when the service time of the denitration pipeline 1 is longer, and the surface of, make denitration pipeline 1 and exhaust duct 2 relative rotation this moment, denitration pipeline 1 takes out from exhaust duct 2, two bolts with denitration pipeline 1 lateral wall take off this moment, pulling telescopic link 6, under the effect and the effect of gravity of telescopic link 6, take out drum 4, the process of taking out is supported pole 19 and the pipeline 3 of giving vent to anger of top and is broken away from, in make the rotatory clean pole 18 of backup pad 5 lateral wall rotate under the effect of spring 16, then reach the terminal arc cleaning plate of clean pole 18 and offset with denitration pipeline 1's inside wall, make the clean board of arc wash denitration pipeline 1's inner wall in the middle of the process of slip drum 4.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An SCR denitration device for boiler flue gas comprises an exhaust pipeline (2) fixedly connected with the upper end of a boiler, and is characterized in that the upper end of the exhaust pipeline (2) is in threaded connection with a denitration pipeline (1), the inner side wall of the denitration pipeline (1) is in sliding connection with a cylinder (4), the cylinder (4) and the denitration pipeline (1) are matched with a sliding mechanism of the sliding cylinder (4), the inner side wall of the cylinder (4) is fixedly connected with a cylinder (11) through a strip-shaped block, the upper end surface of the cylinder (11) is fixedly provided with a box body (15), two sides of the cylinder (11) are provided with spray heads (13), the box body (15) is internally matched with a reciprocating mechanism which can enable the spray heads (13) to move up and down, the spray heads (13) are matched with a denitration mechanism which can remove nitrogen oxides in the flue gas, the upper end of, two backup pad (5) are supporting to be equipped with the clean mechanism of clean denitration pipeline (1), denitration pipeline (1) upper end fixedly connected with pipeline (3) of giving vent to anger.

2. The SCR denitration device of boiler flue gas according to claim 1, wherein the sliding mechanism comprises a T-shaped sliding block (20) fixedly connected with two ends of a cylinder (4), a sliding groove matched with the T-shaped sliding block (20) is formed in the inner side wall of the denitration pipeline (1), two bolts are arranged on the outer side of the denitration pipeline (1), the two bolts penetrate through the denitration pipeline (1) and are in threaded connection with the T-shaped sliding block (20), and a telescopic rod (6) is fixedly connected with the lower end of the cylinder (4).

3. The SCR denitration device of boiler flue gas according to claim 1, wherein the reciprocating mechanism comprises a motor fixedly connected in a box body (15), a strip-shaped groove is formed in the side wall of the column body (11), the tail end of an output shaft of the motor penetrates through the box body (15) and is fixedly connected with a reciprocating lead screw (14), the reciprocating lead screw (14) is rotatably connected with the side wall of the strip-shaped groove, a lead screw sleeve slidably connected with the strip-shaped groove is sleeved on the reciprocating lead screw (14), an arc-shaped plate (12) is fixedly connected with the lead screw sleeve, and the arc-shaped plate (12) is fixedly connected with the spray head (13).

4. The SCR denitration device of boiler flue gas according to claim 1, wherein the denitration mechanism comprises a net cage (10) fixedly connected with the inner side wall of the cylinder (4), the net cage (10) is filled with a denitration reducing agent, the side wall of the denitration pipeline (1) is fixedly connected with a water tank (7), the lower end of the water tank (7) is fixedly connected with a water pump (8), one end of the water pump (8) is communicated with the water tank (7), the other end of the water pump (8) is connected with a water pipe (9), and the water pipe (9) extends into the denitration pipeline (1) and is fixedly connected with the spray head (13).

5. The SCR denitration device of boiler flue gas according to claim 1, wherein the cleaning mechanism comprises two support plates (5) which are respectively rotatably connected with cleaning rods (18), the tail ends of the cleaning rods (18) are respectively rotatably connected with an arc-shaped cleaning plate, the other ends of the two cleaning rods (18) are respectively rotatably connected with a connecting block (17), and the connecting block (17) is provided with a touch mechanism for starting the cleaning mechanism in a matching manner.

6. The SCR denitration device of boiler flue gas according to claim 5, wherein the touch mechanism comprises a connecting block (17) and a spring (16) between the box bodies (15), the upper end of the connecting block (17) is fixedly connected with a propping rod (19), and the tail end of the propping rod (19) is propped against the lower end of the gas outlet pipeline (3).