CN118142335A - Automatic slurry supplementing flue gas desulfurization system - Google Patents
Automatic slurry supplementing flue gas desulfurization system Download PDFInfo
- Publication number
- CN118142335A CN118142335A CN202410491609.7A CN202410491609A CN118142335A CN 118142335 A CN118142335 A CN 118142335A CN 202410491609 A CN202410491609 A CN 202410491609A CN 118142335 A CN118142335 A CN 118142335A
- Authority
- CN
- China
- Prior art keywords
- lime slurry
- flue gas
- slurry
- lime
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 103
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 46
- 230000023556 desulfurization Effects 0.000 title claims abstract description 46
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000003546 flue gas Substances 0.000 title claims abstract description 31
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 84
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 84
- 239000004571 lime Substances 0.000 claims abstract description 84
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 230000003020 moisturizing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The application discloses a flue gas desulfurization system capable of automatically supplementing slurry, which comprises a desulfurization tower, a lime slurry circulating pool, a slurry mixing barrel and a PLC control cabinet, wherein the bottom of the desulfurization tower is communicated with the lime slurry circulating pool through an overflow chute, a flue gas outlet of the desulfurization tower is provided with a sulfur dioxide concentration detector, the lime slurry circulating pool is connected with a spray pipeline extending into the desulfurization tower, a spray pump is arranged on the spray pipeline, and the lime slurry circulating pool is provided with a pH meter; the slurry mixing barrel is communicated with the lime slurry circulating pool through a lime slurry supplementing pipeline, a lime slurry supplementing valve is arranged on the lime slurry supplementing pipeline, and the sulfur dioxide concentration detector, the pH meter and the lime slurry supplementing valve are all electrically connected with the PLC control cabinet. The flue gas desulfurization system realizes the automatic supplement of lime slurry, thereby taking into account the flue gas desulfurization effect and the full utilization of the lime slurry.
Description
Technical Field
The invention relates to the technical field of flue gas desulfurization, in particular to a flue gas desulfurization system capable of automatically supplementing slurry.
Background
The flue gas desulfurization system mainly comprises a desulfurization tower and a lime slurry circulating pool, and utilizes lime slurry to realize desulfurization treatment of flue gas by spraying the lime slurry to the flue gas.
At present, whether the lime slurry circulating tank is replenished with fresh lime slurry is generally judged by manpower according to experience, and the defects are that: on one hand, the pH value of lime slurry sprayed to the flue gas is too low due to untimely supplementing of fresh lime slurry, so that desulfurization of the flue gas can not reach the standard; on the other hand, the lime slurry is not fully utilized and discharged, so that the pH value of the discharged lime slurry is too high to influence the treatment cost of the tail sand water.
Disclosure of Invention
Therefore, the invention aims to provide a flue gas desulfurization system capable of automatically supplementing slurry so as to realize automatic supplementation of lime slurry, thereby achieving both flue gas desulfurization effect and full utilization of lime slurry.
The invention solves the problems by the following technical means:
The flue gas desulfurization system capable of automatically supplementing slurry comprises a desulfurization tower, a lime slurry circulating tank, a slurry mixing barrel and a PLC control cabinet, wherein the bottom of the desulfurization tower is communicated with the lime slurry circulating tank through an overflow chute, a sulfur dioxide concentration detector is arranged at a flue gas outlet of the desulfurization tower, the lime slurry circulating tank is connected with a spray pipeline extending into the desulfurization tower, a spray pump is arranged on the spray pipeline, and a pH meter is arranged in the lime slurry circulating tank; the slurry mixing barrel is communicated with the lime slurry circulating pool through a lime slurry supplementing pipeline, a lime slurry supplementing valve is arranged on the lime slurry supplementing pipeline, and the sulfur dioxide concentration detector, the pH meter and the lime slurry supplementing valve are all electrically connected with the PLC control cabinet.
Further, the lime slurry circulating tank is provided with a liquid level meter, and the liquid level meter is electrically connected with the PLC control cabinet.
Further, the lime slurry circulating tank is connected with a slag discharging pipeline.
Further, a slag discharge pump is arranged on the slag discharge pipeline and is electrically connected with the PLC control cabinet.
Further, the lime slurry circulation tank is provided with a stirrer.
Further, the size mixing barrel is also provided with a stirrer.
The invention has the beneficial effects that:
The application discloses a flue gas desulfurization system capable of automatically supplementing slurry, which comprises a desulfurization tower, a lime slurry circulating pool, a slurry mixing barrel and a PLC (programmable logic controller) control cabinet, wherein the bottom of the desulfurization tower is communicated with the lime slurry circulating pool through an overflow chute; the slurry mixing barrel is communicated with the lime slurry circulating pool through a lime slurry supplementing pipeline, a lime slurry supplementing valve is arranged on the lime slurry supplementing pipeline, and the sulfur dioxide concentration detector, the pH meter and the lime slurry supplementing valve are all electrically connected with the PLC control cabinet. The flue gas desulfurization system realizes the automatic supplement of lime slurry, thereby taking into account the flue gas desulfurization effect and the full utilization of the lime slurry.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a preferred embodiment of the present invention.
Detailed Description
The invention will be described in detail below with reference to the accompanying drawings, as shown in fig. 1: the flue gas desulfurization system capable of automatically supplementing slurry comprises a desulfurization tower 1, a lime slurry circulating tank 2, a slurry mixing barrel 3 and a PLC control cabinet 10, wherein the bottom of the desulfurization tower is communicated with the lime slurry circulating tank through an overflow chute 12, a flue gas outlet of the desulfurization tower is provided with a sulfur dioxide concentration detector 6, the lime slurry circulating tank is connected with a spray pipeline 13 extending into the desulfurization tower, a spray pump 5 is arranged on the spray pipeline, and the lime slurry circulating tank is provided with a pH meter 8; the slurry mixing barrel is communicated with the lime slurry circulating pool through a lime slurry supplementing pipeline 15, a lime slurry supplementing valve 4 is arranged on the lime slurry supplementing pipeline, and the sulfur dioxide concentration detector, the pH meter and the lime slurry supplementing valve are all electrically connected with the PLC control cabinet.
When the lime slurry desulfurization device works, lime slurry in the lime slurry circulating pool is pumped to the desulfurization tower through the spray pump, then sprayed to flue gas, the flue gas is desulfurized by the lime slurry, and the reacted lime slurry is returned to the lime slurry circulating pool through the overflow chute; when the sulfur dioxide concentration detector detects that the sulfur dioxide concentration exceeds a set value, or the pH meter detects that the pH value is lower than the set value, a signal is fed back to the PLC control cabinet, the opening of the lime slurry supplementing valve is controlled through the PLC control cabinet, and fresh lime slurry is supplemented into the lime slurry circulating pool, so that the pH value of the lime slurry is improved, and the desulfurization capacity of the lime slurry is improved.
As a further improvement to the above technical scheme, the lime slurry circulation tank is provided with a liquid level meter 7, and the liquid level meter is electrically connected with the PLC control cabinet. In the desulfurization reaction process, or in the lime slurry supplementing process, the liquid level meter is used for detecting the liquid level of the lime slurry circulating tank, and feeding back a liquid level signal to the PLC control cabinet, and the PLC control cabinet is used for controlling the opening and closing of the lime slurry supplementing valve, so that the reasonable liquid level of the lime slurry circulating tank is ensured.
As a further improvement to the above technical solution, the lime slurry circulation tank is connected with a slag discharge pipeline 14. The slag discharging pipeline is provided with a slag discharging pump 9, and the slag discharging pump is electrically connected with the PLC control cabinet. The slag discharging function is realized by controlling the start and stop of the slag discharging pump through the PLC control cabinet.
As a further improvement to the above technical solution, both the lime mud circulation tank and the mixing drum are provided with a stirrer 11. Lime slurry is stirred by a stirrer, so that the uniformity of the lime slurry can be improved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. The utility model provides an automatic flue gas desulfurization system of moisturizing which characterized in that: the device comprises a desulfurization tower, a lime slurry circulating pool, a slurry mixing barrel and a PLC control cabinet, wherein the bottom of the desulfurization tower is communicated with the lime slurry circulating pool through an overflow chute, a sulfur dioxide concentration detector is arranged at a flue gas outlet of the desulfurization tower, the lime slurry circulating pool is connected with a spray pipeline extending into the desulfurization tower, a spray pump is arranged on the spray pipeline, and a pH meter is arranged in the lime slurry circulating pool; the slurry mixing barrel is communicated with the lime slurry circulating pool through a lime slurry supplementing pipeline, a lime slurry supplementing valve is arranged on the lime slurry supplementing pipeline, and the sulfur dioxide concentration detector, the pH meter and the lime slurry supplementing valve are all electrically connected with the PLC control cabinet.
2. The automatic slurry feed flue gas desulfurization system of claim 1, wherein: the lime slurry circulating tank is provided with a liquid level meter, and the liquid level meter is electrically connected with the PLC control cabinet.
3. The automatic slurry-replenishing flue gas desulfurization system according to claim 2, wherein: the lime slurry circulating tank is connected with a slag discharging pipeline.
4. A flue gas desulfurization system for automatic slurry make-up according to claim 3, wherein: the slag discharging pipeline is provided with a slag discharging pump, and the slag discharging pump is electrically connected with the PLC control cabinet.
5. The automatic slurry-replenishing flue gas desulfurization system according to claim 4, wherein: the lime slurry circulating tank is provided with a stirrer.
6. The automatic slurry-replenishing flue gas desulfurization system according to claim 5, wherein: the size mixing barrel is also provided with a stirrer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410491609.7A CN118142335A (en) | 2024-04-23 | 2024-04-23 | Automatic slurry supplementing flue gas desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410491609.7A CN118142335A (en) | 2024-04-23 | 2024-04-23 | Automatic slurry supplementing flue gas desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118142335A true CN118142335A (en) | 2024-06-07 |
Family
ID=91301022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410491609.7A Pending CN118142335A (en) | 2024-04-23 | 2024-04-23 | Automatic slurry supplementing flue gas desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118142335A (en) |
-
2024
- 2024-04-23 CN CN202410491609.7A patent/CN118142335A/en active Pending
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