CN220708210U - Automatic ash removal control system of denitration tower rotary GGH - Google Patents
Automatic ash removal control system of denitration tower rotary GGH Download PDFInfo
- Publication number
- CN220708210U CN220708210U CN202321875357.5U CN202321875357U CN220708210U CN 220708210 U CN220708210 U CN 220708210U CN 202321875357 U CN202321875357 U CN 202321875357U CN 220708210 U CN220708210 U CN 220708210U
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- CN
- China
- Prior art keywords
- soot blower
- control box
- ggh
- cleaning device
- rotary
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000004071 soot Substances 0.000 claims abstract description 50
- 238000011010 flushing procedure Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000004140 cleaning Methods 0.000 claims abstract description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 abstract 6
- 239000010882 bottom ash Substances 0.000 abstract 1
- 101100121722 Arabidopsis thaliana GGH2 gene Proteins 0.000 description 10
- 238000007664 blowing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a rotary GGH automatic ash removal control system of a denitration tower, which comprises a rotary GGH, a bottom rake type ash blower, a top ash blower control box, a bottom ash blower control box, an ash blower nitrogen pipeline, a flushing water nozzle sealing nitrogen pipeline, a high-pressure cleaning device and a high-pressure cleaning device control box, wherein the rotary GGH is positioned in a raw flue gas and a clean flue gas flue of the denitration tower, and the top rake type ash blower and the bottom rake type ash blower are respectively positioned at the top and the bottom of the rotary GGH. According to the utility model, the bottom rake type soot blower, the top rake type soot blower and the high-pressure cleaning device are automatically controlled through the top soot blower control box, the bottom soot blower control box and the high-pressure cleaning device control box, so that on one hand, the on-site control and operation are facilitated, the workload of operators is reduced, the working efficiency is improved, on the other hand, the blockage of a rotary GGH heat exchange element can be effectively reduced, the running resistance is reduced, and the running energy consumption is reduced.
Description
Technical Field
The utility model relates to the technical field of denitration equipment, in particular to a rotary GGH automatic ash removal control system of a denitration tower.
Background
Pollutants produced in the iron and steel industry, including SO2, NOx, particulates and dioxins in sintered flue gas, can pollute the atmosphere.
In the prior art, the denitration adopts an SCR denitration technical route, the working temperature of a denitration device used in the current power industry is 300-400 ℃, and the sintering and coking flue gas emission temperature is about 130-220 ℃, so that the NOx emission is difficult to be controlled by directly using a medium-high temperature (300-400 ℃) denitration technology in the steel industry.
The low-temperature SCR denitration technology still needs the heat supplementing flue gas to raise the temperature to reach the temperature required by denitration, the application of the rotary GGH can obviously reduce the heat required by flue gas heat supplementing, but the heat of the flue gas in the clean flue gas flue is exchanged into the flue gas in the original flue gas flue through the rotary GGH, the flue gas contains dust, a heat exchange element is not blocked after long-time cleaning, no ideal control means is provided for ash removal work of the rotary GGH in the existing technology and actual operation process, the operation resistance is increased, and the operation power consumption of a fan is increased.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides a rotary GGH automatic ash removal control system of a denitration tower, which comprises the following specific technical scheme:
automatic deashing control system of denitration tower rotation GGH, its characterized in that includes: the device comprises a rotary GGH, a bottom rake type soot blower, a top soot blower control box, a bottom soot blower control box, a soot blower nitrogen pipeline, a flushing water nozzle sealing nitrogen pipeline, a high-pressure cleaning device and a high-pressure cleaning device control box, wherein the rotary GGH is positioned inside a raw flue gas and a clean flue gas flue of a denitration tower, the top rake type soot blower and the bottom rake type soot blower are respectively positioned at the top and the bottom of the rotary GGH, the high-pressure cleaning device is positioned at the top and the bottom of the rotary GGH and is respectively provided with a flushing water pipe, the nitrogen pipeline of the soot blower is connected with a compressed nitrogen source and a nitrogen inlet of the top soot blower control box and a nitrogen inlet of the bottom soot blower control box, the flushing water nozzle sealing nitrogen pipeline is connected with the compressed nitrogen source and the flushing water pipe of the high-pressure cleaning device, and the flushing water pipe is connected with the inlet of the high-pressure flushing water supply device and the high-pressure cleaning device.
As an improvement of the technical scheme, the soot blower nitrogen pipeline is provided with a first manual stop valve, a second manual stop valve, a first pressure transmitter, a second pressure transmitter, a first electromagnetic valve and a second electromagnetic valve.
As an improvement of the technical scheme, the flushing water pipe is provided with a flowmeter, a regulating valve and a pressure transmitter.
As an improvement of the technical scheme, the flushing water nozzle sealing nitrogen pipeline is provided with a solenoid valve III and a switch valve.
As an improvement of the technical scheme, the inlet and the outlet of the flue are respectively provided with a pressure transmitter III and a pressure transmitter IV.
The utility model has the beneficial effects that:
according to the rotary GGH automatic ash removal control system for the denitration tower, disclosed by the utility model, the bottom rake type soot blower, the top rake type soot blower and the high-pressure cleaning device are automatically controlled through the top soot blower control box, the bottom soot blower control box and the high-pressure cleaning device control box, so that on one hand, the on-site control and operation are facilitated, the workload of operators is reduced, the working efficiency is improved, and on the other hand, the blocking of a rotary GGH heat exchange element can be effectively reduced, the running resistance is reduced, and the running energy consumption is reduced.
Drawings
FIG. 1 is a schematic diagram of a structure of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic diagram of a workflow according to an embodiment of the utility model;
fig. 4 is a schematic diagram of a second working procedure according to the embodiment of the utility model.
Reference numerals: 1. a flue; 2. rotary GGH; 3. a bottom rake soot blower; 4. a top rake soot blower; 5. a differential pressure detection module I; 6. a manual stop valve I; 7. a top sootblower control box; 8. a first pressure transmitter; 9. a first electromagnetic valve; 10. driving a first motor; 11. a first return limit switch; 12. an original position limit switch I; 13. a manual stop valve II; 14. a bottom sootblower control box; 15. a second pressure transmitter; 16. a second electromagnetic valve; 17. a second driving motor; 18. returning to a second limit switch; 19. an original position limit switch II; 20. a soot blower nitrogen conduit; 21. a third pressure transmitter; 22. a pressure transmitter IV; 23. a high pressure cleaning device; 24. a differential pressure detection module II; 25. a control box of the high-pressure cleaning device; 26. a high-pressure flushing water supply device; 27. a flow meter; 28. a regulating valve; 29. a pressure transmitter V; 30. a third electromagnetic valve; 31. a switch valve; 32. a third driving motor; 33. a return position limit switch III; 34. a middle position limit switch; 35. an original position limit switch III; 36. the flushing water nozzle seals the nitrogen pipe; 37. a flushing water pipe; 38. a first frequency converter control cabinet; 39. a second frequency converter control cabinet; 40. a rotor speed monitoring module.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Examples
Referring to fig. 1 and 3, fig. 1 is a schematic structural diagram of an embodiment of the present utility model; FIG. 3 is a flowchart illustrating an embodiment of the present utility model.
The utility model provides an automatic ash removal control system of denitration tower rotation GGH, including rotation GGH2, bottom rake soot blower 3, top rake soot blower 4, top soot blower control box 7, bottom soot blower control box 14, rotation GGH2 is located inside the raw flue gas of denitration tower and the clean flue gas flue 1, top rake soot blower 4 and bottom rake soot blower 3 are located rotation GGH 2's top and bottom respectively, soot blower nitrogen gas pipeline 20 connects compressed nitrogen gas source and top soot blower control box 7, bottom soot blower control box 14's nitrogen gas import.
The soot blower nitrogen pipeline 20 is provided with a first manual stop valve 6, a second manual stop valve 13, a first pressure transmitter 8, a second pressure transmitter 15, a first electromagnetic valve 9 and a second electromagnetic valve 16.
The inlet and outlet of the flue 1 are respectively provided with a pressure transmitter III 21 and a pressure transmitter IV 22.
When the device is operated, the soot blower automatically operates according to time interval control logic, the time interval and the blowing time can be automatically adjusted according to the actual condition of the site, after the blowing interval time reaches a set value, an automatic blowing program is started, a PLC control system transmits signals to a top soot blower control box 7 and a bottom soot blower control box 14, a compressed nitrogen pipeline pressure transmitter PI48 and a pressure transmitter PI315 detect that the pressure is normal, a compressed nitrogen pipeline electromagnetic valve I9 and a compressed nitrogen pipeline electromagnetic valve II 16 are opened, a propulsion driving motor I10 and a driving motor II 17 are opened, a soot blower blowing rod advances, a soot blower blowing rod primary position limit switch I12 and a primary position limit switch II 19 are displayed in place, the propulsion driving motor I10 and the driving motor II 17 are closed, a rotary GGH2 rotates, the surface dust of a soot blower blowing heat exchange element reaches the set value, a compressed nitrogen pipeline electromagnetic valve I9 and a compressed nitrogen pipeline electromagnetic valve II 16 are closed, the propulsion driving motor I10 and the driving motor II 17 are opened, the soot blower blowing rod returns to the position limit switch I11 and the return position limit switch II 18 are displayed in place, the propulsion driving motor I10 and the driving motor II 17 is closed, and the soot blower is stopped.
Examples
As shown in fig. 2 and 4, fig. 2 is a schematic structural diagram of a second embodiment of the present utility model; FIG. 4 is a schematic diagram of a second working procedure according to an embodiment of the utility model
Automatic deashing control system of denitration tower rotation GGH includes: the rotary GGH2, the bottom high-pressure cleaning device 23 and the high-pressure cleaning device control box 25, wherein the rotary GGH2 is positioned in the raw flue gas and clean flue gas flue 1 of the denitration tower, the high-pressure cleaning device 23 is positioned at the top and the bottom of the rotary GGH2, flushing water pipes 37 are respectively arranged at the top and the bottom of the rotary GGH2, a flushing water nozzle sealing nitrogen pipeline 36 is connected with a compressed nitrogen source and the flushing water pipes 37 of the high-pressure cleaning device 23, and the flushing water pipes 37 are connected with inlets of the high-pressure flushing water supply device 26 and the high-pressure cleaning device 23.
The flushing pipe 37 is provided with a flow meter 27, a regulating valve 28 and a pressure transmitter five 29.
The flushing water nozzle sealing nitrogen pipe 36 is provided with a solenoid valve three 30 and an on-off valve 31.
After the soot blowing operation is completed, the control logic of the high-pressure cleaning device 23 is controlled according to the time interval and the flushing time, after the cleaning time interval reaches the set value, an automatic cleaning program is started, a PLC control system transmits signals to the high-pressure cleaning device control box 25, a solenoid valve III 30 of a flushing water nozzle sealing nitrogen pipeline 36 and a switch valve 31 are closed, a main motor 38 of a rotary GGH2 motor frequency converter control cabinet starts to reduce the rotating speed, the rotor speed is monitored by a rotor speed monitoring module 40, the rotating speed of the rotary GGH2 is reduced to the set value, a propulsion driving motor III 32 is started, a propulsion rod of the high-pressure cleaning device 23 advances, a propulsion rod middle limit switch 34 of the high-pressure cleaning device 23 displays the in-place state, the propulsion driving motor III 32 is closed, a high-pressure flushing water supply device 26 is started, a flushing water regulating valve 28 is started, the pressure transmitter five PI529 detects that the pressure of the flushing water pipe 37 reaches a set value, the flushing water flowmeter 27 reaches the set value, the high-pressure flushing starts, the flushing time reaches the set value, the propulsion drive motor three 32 is started, the propulsion rod of the high-pressure cleaning device 23 advances, the original position limit switch three 35 of the propulsion rod of the high-pressure cleaning device 23 is shown in place, the propulsion drive motor three 32 is closed, the high-pressure flushing starts, the flushing time reaches the set value, the pressure difference detection module two 24 detects that the pressure difference of the inlet and the outlet of the rotary GGH2 is reduced to the set value, the high-pressure flushing water supply device 26 and the flushing water regulating valve 28 are closed, the propulsion drive motor three 32 is started, the propulsion rod of the high-pressure cleaning device 23 retreats, the return position limit switch three 33 of the propulsion drive motor three 32 is shown in place, the flushing water nozzle sealing nitrogen pipeline 36 is closed, the switch valve 31 and the electromagnetic valve three 30 are opened, the high-pressure cleaning stops running.
When the pressure transmitter five PI529 detects that the pressure of the flushing pipe 37 does not reach the set value, the flushing water regulating valve 28 and the high-pressure flushing water supply device 26 are regulated until the flushing water reaches the set pressure and flow value, and the next procedure is entered.
The switch valve 31 of the flushing water nozzle sealing nitrogen pipeline 36 and the solenoid valve III 30 are opened to introduce compressed nitrogen into the flushing water pipeline nozzle when the flushing is stopped, so that dust in the flue gas is prevented from entering the flushing water pipe to cause blockage.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (5)
1. Automatic deashing control system of denitration tower rotation GGH, its characterized in that includes: rotary GGH (2), bottom rake soot blower (3), top rake soot blower (4), top soot blower control box (7), bottom soot blower control box (14), soot blower nitrogen pipe (20), sparge water nozzle seal nitrogen pipe (36), high pressure cleaning device (23) and high pressure cleaning device control box (25), rotary GGH (2) are located inside the raw flue gas and clean flue gas flue (1) of denitration tower, top rake soot blower (4) and bottom rake soot blower (3) are located the top and the bottom of rotary GGH (2) respectively, high pressure cleaning device (23) are located top and the bottom of rotary GGH (2) and all are provided with wash pipe (37), the nitrogen gas import of compressed nitrogen gas source and top soot blower control box (7), bottom soot blower control box (14) is connected to sparge water nozzle seal nitrogen gas pipe (36), wash pipe (37) connect high pressure nitrogen gas source and high pressure cleaning device (23) water supply pipe (37), high pressure cleaning device (26) and high pressure device (23) are connected to wash pipe (37).
2. The automatic ash removal control system for a rotary GGH of a denitrating tower according to claim 1, wherein: the soot blower nitrogen pipeline (20) is provided with a first manual stop valve (6), a second manual stop valve (13), a first pressure transmitter (8), a second pressure transmitter (15), a first electromagnetic valve (9) and a second electromagnetic valve (16).
3. The automatic ash removal control system for a rotary GGH of a denitrating tower according to claim 1, wherein: the flushing water pipe (37) is provided with a flowmeter (27), a regulating valve (28) and a pressure transmitter (29).
4. The automatic ash removal control system for a rotary GGH of a denitrating tower according to claim 1, wherein: the flushing water nozzle sealing nitrogen pipeline (36) is provided with a solenoid valve III (30) and a switch valve (31).
5. The automatic ash removal control system for a rotary GGH of a denitrating tower according to claim 1, wherein: and the inlet and outlet of the flue (1) are respectively provided with a third pressure transmitter (21) and a fourth pressure transmitter (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321875357.5U CN220708210U (en) | 2023-07-17 | 2023-07-17 | Automatic ash removal control system of denitration tower rotary GGH |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321875357.5U CN220708210U (en) | 2023-07-17 | 2023-07-17 | Automatic ash removal control system of denitration tower rotary GGH |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220708210U true CN220708210U (en) | 2024-04-02 |
Family
ID=90444046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321875357.5U Active CN220708210U (en) | 2023-07-17 | 2023-07-17 | Automatic ash removal control system of denitration tower rotary GGH |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220708210U (en) |
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2023
- 2023-07-17 CN CN202321875357.5U patent/CN220708210U/en active Active
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