CN213610695U - Seawater desulfurization rapid cooling water system with ventilation anti-corrosion device - Google Patents
Seawater desulfurization rapid cooling water system with ventilation anti-corrosion device Download PDFInfo
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- CN213610695U CN213610695U CN202022380419.8U CN202022380419U CN213610695U CN 213610695 U CN213610695 U CN 213610695U CN 202022380419 U CN202022380419 U CN 202022380419U CN 213610695 U CN213610695 U CN 213610695U
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Abstract
The utility model relates to the technical field of power plant desulfurization, in particular to a seawater desulfurization rapid cooling water system with a ventilation and corrosion prevention device, which is provided with a desulfurization absorption tower, the side surface of the inlet of the desulfurization absorption tower is provided with a fire-fighting rapid cooling water main pipe and a cooling water tank rapid cooling water main pipe, and is characterized in that the fire-fighting rapid cooling water main pipe and the cooling water tank rapid cooling water main pipe are respectively connected with the ventilation and corrosion prevention device, the ventilation and corrosion prevention device comprises a rapid cooling water ventilator, an outlet electric valve, a manual isolation valve, a ventilation main pipe, a cooling water branch pipe and a fire-fighting water branch pipe, the air outlet of the rapid cooling water ventilator is connected with the ventilation main pipe, the ventilation main pipe is respectively connected with the fire-fighting rapid cooling water main pipe and the cooling water tank rapid cooling water main pipe through the cooling water branch pipe and the fire-fighting water branch pipe, the cooling water branch pipe and the fire-fighting water branch, has the advantages of simple structure, pipeline corrosion prevention, less equipment investment, economic and safe operation and the like.
Description
Technical Field
The utility model belongs to the technical field of the desulfurization technique of power plant and specifically relates to a band-pass ventilation anticorrosion device sea water desulfurization rapid cooling water system that simple structure, prevent that pipeline from corroding, equipment investment are few, operation economy safety.
Background
As is well known, a desulfurization system of a thermal power generating unit adopts a flue gas seawater desulfurization process, wherein a quench water system is an important accident spraying facility for protecting equipment inside a desulfurization absorption tower. After the energy-saving transformation of the unit, the temperature of smoke at the inlet of the desulfurization absorption tower is reduced to 90-95 ℃ under the operating condition, the problem of corrosion leakage of a quenching water pipeline is gradually highlighted due to serious low-temperature corrosion, the problem can only be temporarily maintained by frequently replacing the pipeline, the pipeline replacement directly consumes a large amount of labor and materials, hidden dangers are brought to safe operation, and effective anti-corrosion measures are needed to be taken for solving.
Disclosure of Invention
The utility model aims at solving the defects of the prior art and providing a seawater desulfurization rapid cooling water system with a ventilation and corrosion prevention device, which has simple structure, prevents pipeline corrosion, has less equipment investment and economic and safe operation.
The utility model provides a technical scheme that its technical problem adopted is:
a seawater desulfurization rapid cooling water system with a ventilation anti-corrosion device is provided with a desulfurization absorption tower, a fire-fighting rapid cooling water main pipe and a cooling water tank rapid cooling water main pipe are arranged on the side surface of an inlet of the desulfurization absorption tower, one end of the fire-fighting rapid cooling water main pipe is connected with a low-pressure life fire water source, a fire-fighting rapid cooling water branch pipe is arranged on the pipe body of the other end of the fire-fighting rapid cooling water main pipe side by side, one end of the fire-fighting rapid cooling water branch pipe is connected with the fire-fighting rapid cooling water main pipe, the other end of the fire-fighting rapid cooling water branch pipe extends into the inlet of the desulfurization absorption tower and is connected with a spray head, one end of the cooling water tank rapid cooling water main pipe is connected with the cooling water tank rapid cooling water main pipe side by side, a cooling water tank rapid cooling water branch pipe is arranged on the pipe body of the other end of the cooling water tank rapid cooling, its characterized in that female pipe of fire control quench water and the female pipe of coolant tank quench water be connected with ventilation anti-corrosion device respectively, ventilation anti-corrosion device include quench water ventilation blower, export motorised valve, manual isolating valve, the female pipe of ventilation, cooling water divides pipe and fire control water to manage, the air outlet of quench water ventilation blower be connected with the female pipe of ventilation, the female pipe of ventilation is connected with the female pipe of fire control quench water and coolant tank quench water through cooling water divides pipe and fire control water to manage respectively, is equipped with manual check isolating valve on cooling water divides pipe and the fire control water to manage respectively, is equipped with the export motorised valve whether the female pipe of control ventilation ventilates on the female pipe of ventilation.
Be equipped with the check valve on the female pipe of ventilation of export motorised valve rear side, prevent that water on female pipe of fire control quench cooling water and the female pipe of coolant tank quench cooling water from getting into quench cooling water ventilation machine, avoid the damage of quench cooling water ventilation machine.
Fire hose branch establish at the tip of keeping away from the fire control quench water main pipe at low pressure life fire control water source, make flue gas suppression effectual.
The cooling water divide the pipe to establish at the tip of keeping away from coolant tank's coolant tank quench water mother pipe, make flue gas suppression effectual.
Fire control quench cooling water mother pipe and coolant tank quench cooling water mother pipe on be equipped with control flap respectively.
Female pipe of ventilation on be equipped with the pressure gauge of surveying the female intraductal pipeline pressure of ventilation, survey pressure in real time, it is not good to avoid pressure too big desulfurization effect in leading to the desulfurizing tower, avoids pressure undersize to lead to the pipeline to corrode.
The utility model discloses owing to adopt above-mentioned structure, have simple structure, prevent advantages such as pipeline corrosion, equipment investment is few, operation economic safety.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in the attached drawing, a seawater desulfurization rapid cooling water system with a ventilation anti-corrosion device is provided with a desulfurization absorption tower, a fire-fighting rapid cooling water main pipe 2 and a cooling water tank rapid cooling water main pipe 3 are arranged on the side surface of an inlet 1 of the desulfurization absorption tower, one end of the fire-fighting rapid cooling water main pipe 2 is connected with a low-pressure life fire water source, a fire-fighting rapid cooling water branch pipe 14 is arranged on the pipe body at the other end of the fire-fighting rapid cooling water main pipe 2 side by side, one end of the fire-fighting rapid cooling water branch pipe 14 is connected with the fire-fighting rapid cooling water main pipe 2, the other end of the fire-fighting rapid cooling water branch pipe 14 extends into the inlet 1 of the desulfurization absorption tower to be connected with a spray head, one end of the cooling water tank rapid cooling water main pipe 3 is connected with the cooling water tank, a cooling water tank rapid cooling water branch pipe 4 is arranged on the pipe body, the other end of coolant tank quench water branch pipe 4 stretches into in 1 desulfurization absorption tower entry and is connected with the shower nozzle, its characterized in that the female pipe of fire control quench water 2 and the female pipe of coolant tank quench water 3 be connected with the anticorrosion device that ventilates respectively, the anticorrosion device that ventilates include quench water ventilator 5, export motorised valve 6, manual isolating valve 8, the female pipe 9 of ventilation, cooling water branch pipe 10 and fire control water branch pipe 11, the air outlet of quench water ventilator 5 be connected with the female pipe 9 of ventilation, the female pipe 9 of ventilation is connected with the female pipe of fire control quench water 2 and the female pipe of coolant tank quench water 3 through cooling water branch pipe 10 and fire control water branch pipe 11 respectively, is equipped with manual check isolating valve on cooling water branch pipe 10 and the fire control water branch pipe 11 respectively, is equipped with the export 6 whether the female pipe 9 of ventilation of control ventilates on the female pipe 9 of ventilation.
Further, be equipped with check valve 7 on the female pipe 9 of ventilation of 6 rear sides of export motorised valves, prevent that the water on female pipe 2 of fire control quench water and the female pipe 3 of cooling water tank quench water from getting into quench water ventilation fan 5 in, avoid the damage of quench water ventilation fan 5.
Furthermore, fire hose 11 establish at the tip of the fire control quench water main pipe 2 of keeping away from low pressure life fire water source, make the flue gas suppression effectual.
Furthermore, the cooling water branch pipe 10 is arranged at the end part of the cooling water tank quenching water main pipe 3 far away from the cooling water tank, so that the flue gas pressing effect is good.
Furthermore, a control valve 13 is respectively arranged on the fire-fighting quenching water main pipe 2 and the cooling water tank quenching water main pipe 3.
Further, the main ventilation pipe 9 on be equipped with the pressure gauge 12 of surveying the main pipe pressure of ventilation 9 in, survey pressure in real time, it is not good to avoid pressure too big to lead to desulfurization effect in the desulfurizing tower, avoids pressure undersize to lead to the pipeline corruption.
When the utility model is used, because the ventilating and corrosion-proof device is arranged in the seawater desulfurization quench water system, when the desulfurization absorption tower needs quench water, the control valve 13 on the fire-fighting quench water header pipe 2 and the cooling water tank quench water header pipe 3 is opened, the quench water is sprayed on the desulfurization absorption tower, when the operation is not needed, the quench water ventilator 5, the outlet electric valve 6 and the manual isolation valve 8 are opened at the moment, by blowing towards the desulfurization absorption tower, the flue gas in the desulfurization absorption tower is prevented from entering the pipeline inner corrosion pipeline by the spray head, the mechanical ventilation is utilized to resist the flue gas principle, the quench water ventilator 5 is utilized to continuously ventilate the quench water pipeline, the moist high-sulfur flue gas pressure back flue entering the pipeline is pressed, thereby preventing and reducing the pipeline corrosion, the required wind pressure and wind volume need to be accurately calculated in the practical process, even if the wind pressure can be satisfied, and also meeting the economic operation conditions without wasting electric energy and equipment investment, for example, the number of the spray heads is 52, the drift diameter of the spray heads is 20mm, the total flow area is 164 cm2, the pipe diameters DN150 mm of the fire-fighting quenching water mother pipe 2, the cooling water tank quenching water mother pipe 3 and the ventilation mother pipe 9 are observed, the analysis of the original smoke pressure operation curve at the inlet 1 of the four units of the desulfurization absorption tower is observed, wherein the maximum value of the 320MW unit is not higher than 2.5KPa, and the maximum value of the 680MW unit is respectively 4.2 KPa and 3.5 KPa, therefore, the air pressure value of 4.5 KPa of the ventilator can meet the requirement of pressing smoke, the pressing force is 4.5 KPa, the pipe diameter DN150 mm is used for taking the empirical value of 30m/s of the air speed to calculate the theoretical air volume of the fan as Nm3/h, therefore, according to the data, the fan types of the ventilation device are selected as 9-19-4.5A, 206250 3/h and, the power of the motor is 5.5KW, the rotating speed is 2900r/min, the equipment greatly reduces the corrosion of the desulfurization quenching water pipeline, prolongs the service life of the pipeline, improves the operation reliability of field equipment, and ensures the safe and stable operation of desulfurization facilities.
The utility model discloses owing to adopt above-mentioned structure, have simple structure, prevent advantages such as pipeline corrosion, equipment investment is few, operation economic safety.
Claims (6)
1. A seawater desulfurization rapid cooling water system with a ventilation anti-corrosion device is provided with a desulfurization absorption tower, a fire-fighting rapid cooling water main pipe and a cooling water tank rapid cooling water main pipe are arranged on the side surface of an inlet of the desulfurization absorption tower, one end of the fire-fighting rapid cooling water main pipe is connected with a low-pressure life fire water source, a fire-fighting rapid cooling water branch pipe is arranged on the pipe body of the other end of the fire-fighting rapid cooling water main pipe side by side, one end of the fire-fighting rapid cooling water branch pipe is connected with the fire-fighting rapid cooling water main pipe, the other end of the fire-fighting rapid cooling water branch pipe extends into the inlet of the desulfurization absorption tower and is connected with a spray head, one end of the cooling water tank rapid cooling water main pipe is connected with the cooling water tank rapid cooling water main pipe side by side, a cooling water tank rapid cooling water branch pipe is arranged on the pipe body of the other end of the cooling water tank rapid cooling, its characterized in that female pipe of fire control quench water and the female pipe of coolant tank quench water be connected with ventilation anti-corrosion device respectively, ventilation anti-corrosion device include quench water ventilation blower, export motorised valve, manual isolating valve, the female pipe of ventilation, cooling water divides pipe and fire control water to manage, the air outlet of quench water ventilation blower be connected with the female pipe of ventilation, the female pipe of ventilation is connected with the female pipe of fire control quench water and coolant tank quench water through cooling water divides pipe and fire control water to manage respectively, is equipped with manual check isolating valve on cooling water divides pipe and the fire control water to manage respectively, is equipped with the export motorised valve whether the female pipe of control ventilation ventilates on the female pipe of ventilation.
2. The seawater desulfurization and quenching system with the ventilation and corrosion prevention device as claimed in claim 1, wherein a check valve is arranged on the ventilation main pipe at the rear side of the electric valve at the outlet.
3. The seawater desulfurization/quenching system with the ventilation/corrosion prevention device as claimed in claim 1, wherein the fire hose is provided at an end of the fire hose which is remote from the low-pressure domestic fire water source.
4. The seawater desulfurization quenching water system with the ventilation and corrosion prevention device as claimed in claim 1, wherein the cooling water branch pipe is provided at an end of a cooling water tank quenching water main pipe far from the cooling water tank.
5. The seawater desulfurization quenching water system with the ventilation and corrosion prevention device as claimed in claim 1, wherein the fire-fighting quenching water main pipe and the cooling water tank quenching water main pipe are respectively provided with a control valve.
6. The seawater desulfurization quenching water system with the ventilation and corrosion prevention device as claimed in claim 1, wherein the ventilation main pipe is provided with a pressure gauge for measuring the pressure of the pipeline in the ventilation main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380419.8U CN213610695U (en) | 2020-10-23 | 2020-10-23 | Seawater desulfurization rapid cooling water system with ventilation anti-corrosion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022380419.8U CN213610695U (en) | 2020-10-23 | 2020-10-23 | Seawater desulfurization rapid cooling water system with ventilation anti-corrosion device |
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| Publication Number | Publication Date |
|---|---|
| CN213610695U true CN213610695U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022380419.8U Active CN213610695U (en) | 2020-10-23 | 2020-10-23 | Seawater desulfurization rapid cooling water system with ventilation anti-corrosion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213610695U (en) |
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2020
- 2020-10-23 CN CN202022380419.8U patent/CN213610695U/en active Active
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