CN215863471U

CN215863471U - Temperature control device for SCR catalyst inlet of pulverized coal furnace

Info

Publication number: CN215863471U
Application number: CN202121983068.8U
Authority: CN
Inventors: 华志强; 吴文荣
Original assignee: Wuxi Rongcheng Environmental Protection Technology Co ltd
Current assignee: Wuxi Rongcheng Environmental Protection Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-18
Anticipated expiration: 2031-08-23

Abstract

The utility model provides a temperature control device for a Selective Catalytic Reduction (SCR) catalyst inlet of a pulverized coal furnace, which comprises a sound wave soot blower, a semi-telescopic soot blower, a controller and a temperature sensor, wherein the sound wave soot blower is connected with the controller; the compressed air pipe is arranged on the acoustic wave soot blower; the first electromagnetic valve is arranged on the compressed air pipe; the steam pipe is arranged on the semi-telescopic soot blower; the second electromagnetic valve is arranged on the steam pipe; the first electromagnetic valve, the second electromagnetic valve and the temperature sensor are all electrically connected with the controller. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace has the advantages that soot blowing can be automatically controlled, soot blowing modes are various, soot blowing times are reduced, further, blowing erosion on a pipeline is reduced, and the probability of pipe breakage is reduced.

Description

Temperature control device for SCR catalyst inlet of pulverized coal furnace

Technical Field

The utility model relates to the technical field of pulverized coal furnaces, in particular to a temperature control device for an SCR catalyst inlet of a pulverized coal furnace.

Background

The pulverized coal furnace is a boiler device taking pulverized coal as fuel. It has the advantages of rapid and complete combustion, large capacity, high efficiency, wide coal adaptation range, convenient control and regulation, etc. The combustion characteristic of the pulverized coal furnace is that the fuel enters the combustion chamber together with the air, and burn under the suspension state, when the pulverized coal furnace is used, need add SCR catalyst, and according to different production demands, the pulverized coal furnace uses together with superheater and economizer, in the use, the flue gas granule adheres to superheater and economizer pipeline, lead to the catalyst inlet temperature too high easily, thus make the catalyst effect decline, among the prior art, need blow the soot cooling.

However, in the prior art, the soot blowing cooling mode is single, soot blowing needs to be frequently performed, on one hand, time and labor are wasted, on the other hand, a pipeline is easily blown and corroded, and the probability of pipe breakage is increased.

Therefore, there is a need to provide a new temperature control device for the inlet of the SCR catalyst of the pulverized coal furnace to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of providing the temperature control device for the SCR catalyst inlet of the pulverized coal furnace, which can automatically control soot blowing, has various soot blowing modes, reduces the soot blowing times, further reduces the blowing erosion of a pipeline and reduces the probability of tube breakage.

In order to solve the technical problem, the temperature control device for the SCR catalyst inlet of the pulverized coal furnace provided by the utility model comprises: the device comprises a sound wave soot blower, a semi-telescopic soot blower, a controller and a temperature sensor; the compressed air pipe is arranged on the acoustic wave soot blower; the first electromagnetic valve is arranged on the compressed air pipe; the steam pipe is arranged on the semi-telescopic soot blower; the second electromagnetic valve is arranged on the steam pipe; the first electromagnetic valve, the second electromagnetic valve and the temperature sensor are all electrically connected with the controller.

Preferably, the semi-telescopic soot blower comprises a housing, a piston is installed in the housing in a sliding sealing mode, a pipeline is fixedly installed on the piston, and the pipeline is connected with the housing in a sliding sealing mode.

Preferably, the piston is provided with a first air inlet, the pipeline is provided with a second air inlet, the first air inlet and the second air inlet are respectively and fixedly provided with a first check valve and a second check valve, and the pipeline is provided with an exhaust hole.

Preferably, the inner wall of the shell is provided with a spiral groove, the pipeline is fixedly provided with a guide rod, and the guide rod is connected with the inner wall of the spiral groove in a sliding manner.

Preferably, the cavity has been seted up on the casing, slidable mounting has first wedge in the cavity, symmetrical slidable mounting has two second wedges in the casing, the bottom of second wedge extend to in the cavity and with first wedge sliding connection.

Preferably, the bottom fixed mounting of casing has the box, the box is linked together with the steam pipe, fixed mounting has two connecting pipes on the box, the connecting pipe extends to in the casing, and the mouth of pipe of two connecting pipes is located the both sides of piston respectively.

Preferably, a support is slidably mounted in the box body and fixedly connected with the first wedge-shaped block, two sealing plates are fixedly mounted on the support and correspond to the connecting pipe.

Compared with the prior art, the temperature control device for the SCR catalyst inlet of the pulverized coal furnace has the following beneficial effects:

the utility model provides a temperature control device for a coal powder furnace SCR catalyst inlet, wherein a first electromagnetic valve is arranged on a compressed air pipe, a second electromagnetic valve is arranged on a steam pipe, and the first electromagnetic valve, the second electromagnetic valve and a temperature sensor are all electrically connected with a controller, so that the temperature control can be automatically carried out, the manual operation is not needed, the time and the labor are saved, and the automation degree is high; the compressed air pipe is arranged on the sound wave soot blower, and the steam pipe is arranged on the semi-telescopic soot blower, so that the sound wave soot blower and the semi-telescopic soot blower can operate, and further the sound wave soot blower and the semi-telescopic soot blower are combined to blow soot, the soot blowing frequency is reduced, the blowing erosion to a pipeline is reduced, and the probability of pipe breakage is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of a temperature control device for an inlet of an SCR catalyst of a pulverized coal furnace according to the present invention;

fig. 2 is a schematic sectional structure view of a semi-telescopic soot blower.

Reference numbers in the figures: 1. a sound wave soot blower; 2. a compressed air pipe; 3. a first solenoid valve; 4. a semi-telescopic soot blower; 401. a housing; 402. a piston; 403. a pipeline; 404. a first air intake hole; 405. a first check valve; 406. a second air intake hole; 407. a second one-way valve; 408. an exhaust hole; 409. a helical groove; 410. a guide bar; 411. a cavity; 412. a first wedge block; 413. a second wedge block; 414. a box body; 415. a connecting pipe; 416. a support; 417. a sealing plate; 5. a steam pipe; 6. a second solenoid valve; 7. a controller; 8. a temperature sensor.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1-2, the temperature control device for the inlet of the SCR catalyst of the pulverized coal furnace includes: the device comprises a sound wave soot blower 1, a semi-telescopic soot blower 4, a controller 7 and a temperature sensor 8; the compressed air pipe 2 is arranged on the acoustic wave soot blower 1; the first electromagnetic valve 3 is arranged on the compressed air pipe 2; the steam pipe 5 is arranged on the semi-telescopic soot blower 4; the second electromagnetic valve 6, the said second electromagnetic valve 6 is set up on the said steam pipe 5; the first electromagnetic valve 3, the second electromagnetic valve 6 and the temperature sensor 8 are electrically connected with the controller 7; can automatic control temperature, can combine through two kinds of soot blowing modes, simultaneously, because sound wave soot blower 1 can not blow and lose the pipeline, and then can reduce and blow and lose of ash this moment, reduce the pipeline.

The semi-telescopic soot blower 4 comprises a shell 401, a piston 402 is installed in the shell 401 in a sliding sealing manner, a pipeline 403 is fixedly installed on the piston 402, the pipeline 403 is connected with the shell 401 in a sliding sealing manner, a first air inlet 404 is installed on the piston 402, a second air inlet 406 is installed on the pipeline 403, a first check valve 405 and a second check valve 407 are respectively and fixedly installed in the first air inlet 404 and the second air inlet 406, an exhaust hole 408 is installed on the pipeline 403, a spiral groove 409 is installed on the inner wall of the shell 401, a guide rod 410 is fixedly installed on the pipeline 403, the guide rod 410 is connected with the inner wall of the spiral groove 409 in a sliding manner, a cavity 411 is installed on the shell 401, a first wedge block 412 is installed in the cavity 411 in a sliding manner, two second wedge blocks 413 are symmetrically installed in the shell 401 in a sliding manner, the bottom of each second wedge block 413 extends into the cavity 411 and is connected with the first wedge block 412 in a sliding manner, the bottom fixed mounting of casing 401 has box 414, box 414 is linked together with steam pipe 5, fixed mounting has two connecting pipes 415 on box 414, connecting pipe 415 extends to in the casing 401, and the mouth of pipe of two connecting pipes 415 is located the both sides of piston 402 respectively, slidable mounting has support 416 in box 414, support 416 and first wedge 412 fixed connection, fixed mounting has two sealing plates 417 on support 416, sealing plate 417 is corresponding with connecting pipe 415. The semi-telescopic soot blower 4 can be operated only through steam without being externally connected with other energy sources and electrical elements, and the energy-saving and environment-friendly soot blower is energy-saving and long in service life.

The working principle of the temperature control device for the SCR catalyst inlet of the pulverized coal furnace provided by the utility model is as follows:

when the device is used, the temperature sensor 8 is arranged at the inlet of a catalyst, the compressed air pipe 2 and the steam pipe 5 are respectively connected with an external compressed air generating device and a steam generating device, the sound wave soot blower 1 is arranged on a superheater, the semi-telescopic soot blower 4 is arranged on an economizer, when the temperature sensor 8 detects that the temperature is higher, the temperature sensor 8 generates a signal to the controller 7, the controller 7 controls the first electromagnetic valve 3 and the second electromagnetic valve 6 to be opened, so that the compressed air is used as a power source to drive the sound wave soot blower 1 to operate, soot blowing is carried out through sound waves, steam is blown through the operation of the semi-telescopic soot blower 4, the heat conduction effect can be ensured, the heat is utilized in time, the temperature is further reduced, the sound wave soot blower 1 and the semi-telescopic soot blower 4 are mutually matched, and the sound wave soot blower 1 cannot blow off a pipeline, furthermore, blowing dust can be reduced, and blowing corrosion to the pipeline is reduced;

when the semi-telescopic soot blower 4 works, as shown in the attached drawing 2 of the specification, steam enters the shell 401 through the connecting pipe 415 on the left side, then a part of the steam is used for pushing the piston 402 to move rightwards, so that the pipeline 403 extends into the economizer, the pipeline 403 rotates under the action of the guide rod 410 and the spiral groove 409 while the pipeline 403 moves, and the other part of the steam enters the pipeline 403 through the first check valve 405 and is discharged through the exhaust hole 408 for soot blowing; when the piston 402 moves to the right, the piston 402 presses the inclined surface of the second wedge-shaped block 413 on the right side, so that the second wedge-shaped block 413 moves downwards to drive the first wedge-shaped block 412 to move leftwards, at this time, the connecting pipe 415 on the left side is blocked by the sealing plate 417, steam enters the shell 401 through the connecting pipe 415 on the right side, a part of steam is used for pushing the piston 402 to move leftwards, the pipeline 403 extends into the shell 401, the other part of steam enters the pipeline 403 through the second one-way valve 407, and the operation is repeated, so that the pipeline 403 can reciprocate leftwards and rightwards, and rotates during movement and blows dust through the air exhaust hole 408;

the semi-telescopic soot blower in the prior art needs to be externally connected with other energy sources and needs to utilize other electrical elements, and in the technology, the semi-telescopic soot blower 4 only needs steam and can operate without being externally connected with other energy sources and electrical elements, so that the energy conservation and environmental protection are realized, the use of the electrical elements is less, and the service life is long.

the utility model provides a temperature control device for a coal powder furnace SCR catalyst inlet, wherein a first electromagnetic valve 3 is arranged on a compressed air pipe 2, a second electromagnetic valve 6 is arranged on a steam pipe 5, and the first electromagnetic valve 3, the second electromagnetic valve 6 and a temperature sensor 8 are electrically connected with a controller 7, so that the temperature control can be automatically carried out, manual operation is not needed, time and labor are saved, and the automation degree is high; the compressed air pipe 2 is arranged on the sound wave soot blower 1, the steam pipe 5 is arranged on the semi-telescopic soot blower 4, the sound wave soot blower 1 and the semi-telescopic soot blower 4 can operate, and then the two soot blowers are combined to blow soot, so that the soot blowing frequency is reduced, the blowing erosion to a pipeline is reduced, and the probability of pipe breakage is reduced.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a pulverized coal stove SCR catalyst temperature regulating device for entry which characterized in that includes:

the device comprises a sound wave soot blower, a semi-telescopic soot blower, a controller and a temperature sensor;

the compressed air pipe is arranged on the acoustic wave soot blower;

the first electromagnetic valve is arranged on the compressed air pipe;

the steam pipe is arranged on the semi-telescopic soot blower;

the second electromagnetic valve is arranged on the steam pipe;

the first electromagnetic valve, the second electromagnetic valve and the temperature sensor are all electrically connected with the controller.

2. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace as claimed in claim 1, wherein the semi-telescopic soot blower comprises a housing, a piston is slidably and hermetically mounted in the housing, a pipe is fixedly mounted on the piston, and the pipe is slidably and hermetically connected with the housing.

3. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace as claimed in claim 2, wherein the piston is provided with a first air inlet hole, the pipeline is provided with a second air inlet hole, the first air inlet hole and the second air inlet hole are respectively and fixedly provided with a first check valve and a second check valve, and the pipeline is provided with an exhaust hole.

4. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace as claimed in claim 3, wherein the inner wall of the casing is provided with a spiral groove, the pipeline is fixedly provided with a guide rod, and the guide rod is slidably connected with the inner wall of the spiral groove.

5. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace as recited in claim 4, wherein the housing is provided with a cavity, a first wedge block is slidably mounted in the cavity, two second wedge blocks are slidably mounted in the housing symmetrically, and the bottom of each second wedge block extends into the cavity and is slidably connected with the first wedge block.

6. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace as claimed in claim 5, wherein a box body is fixedly installed at the bottom of the casing, the box body is communicated with the steam pipe, two connecting pipes are fixedly installed on the box body, the connecting pipes extend into the casing, and pipe orifices of the two connecting pipes are respectively located at two sides of the piston.

7. The temperature control device for the SCR catalyst inlet of the pulverized coal furnace as claimed in claim 6, wherein a support is slidably mounted in the box body, the support is fixedly connected with the first wedge block, two sealing plates are fixedly mounted on the support, and the sealing plates correspond to the connecting pipes.