CN214582606U - Water-borne type machine-force cooling tower white eliminating system - Google Patents
Water-borne type machine-force cooling tower white eliminating system Download PDFInfo
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- CN214582606U CN214582606U CN202120871405.8U CN202120871405U CN214582606U CN 214582606 U CN214582606 U CN 214582606U CN 202120871405 U CN202120871405 U CN 202120871405U CN 214582606 U CN214582606 U CN 214582606U
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Abstract
The application belongs to the technical field of industrial energy conservation and environmental protection, and particularly relates to a whitening system of a hydrophily type mechanical cooling tower. Including the desulfurizing tower, the desulfurizing tower entry sets up fluoroplastics gas cooler, is provided with the cooling heat exchange tube in the cooler, and the both ends of cooling heat exchange tube are respectively through circulating water pipe and soda heat exchanger's water inlet, delivery port intercommunication, and be provided with the heat medium water pump on the circulating water pipe of at least one side, and the desulfurizing tower export is provided with fluoroplastics gas condenser, is provided with the condensation heat exchange tube in the condenser, and the inlet outlet and the machine power cooling tower realization circulation intercommunication of condensation heat exchange tube, and machine power cooling tower top exit are provided with collects the cover, it passes through steam conduit and draught fan intercommunication to collect the cover, steam conduit is close to and collects cover one side and is provided with the defroster, and soda heat exchanger sets up on the steam conduit between defroster and draught fan. The application adopts the flue gas waste heat as a heat source, and heats the water vapor at the outlet of the mechanical cooling tower to eliminate colored smoke plume at the outlet of the cooling tower.
Description
Technical Field
The application belongs to the technical field of industrial energy conservation and environmental protection, and particularly relates to a whitening system of a hydrophily type mechanical cooling tower.
Background
The mechanical cooling tower mainly comprises a fan, a water pump, a water spray nozzle, a water supplementing device, a water pool and the like. The device is a device which uses a fan to perform forced ventilation and enables the fan to perform circulating cooling. In the operation process of the traditional mechanical ventilation cooling tower, saturated damp and hot air is generated by cold air after heat exchange with water in the cooling tower, after the damp and hot air is discharged and mixed with the cold air, cooling and condensation are carried out to form a fog cluster containing a plurality of tiny liquid particle groups, the liquid particles can generate color change due to factors such as sunlight scattering and observation angles, the phenomenon becomes colored smoke plume, colors such as blue, gray and white can be presented, because the mechanical ventilation cooling tower is low in height, the fog cluster is scattered, the visibility of peripheral residential areas and traffic roads is also influenced, the road surface around the cooling tower is wet and smooth, and the normal inspection of workers is influenced.
Therefore, there is a need for a system for eliminating white spots in an aqueous mechanical cooling tower to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides a water-borne type machine-force cooling tower whitening system.
A white system that disappears of hydrophily formula mechanical cooling tower, includes the desulfurizing tower, set up fluoroplastics gas cooler on the flue of desulfurizing tower entry, be provided with the cooling heat exchange tube in the fluoroplastics gas cooler, the both ends of cooling heat exchange tube communicate with water inlet, the delivery port of soda heat exchanger through circulating water pipe respectively, and at least one side circulating water pipe is provided with the heat medium water pump, be provided with fluoroplastics flue gas condenser on the flue of desulfurizing tower export intercommunication chimney, be provided with the condensation heat exchange tube in the fluoroplastics flue gas condenser, the water inlet of condensation heat exchange tube communicates with mechanical cooling tower bottom through the cooling water booster pump, the delivery port of condensation heat exchange tube communicates mechanical cooling tower upper portion through the water supply pipeline, mechanical cooling tower top exit is provided with the collection cover, the collection cover communicates with the draught fan through steam conduit, the steam pipe is provided with the defroster near collecting cover one side, soda heat exchanger sets up on the steam pipe between defroster and draught fan.
Furthermore, the cooling heat exchange tube and the condensation heat exchange tube are made of fluoroplastic materials.
Furthermore, the circulating water pipe is made of stainless steel, and circulating water in the circulating water pipe is desalted water.
Furthermore, a water supplementing system, a pressure stabilizing system and a pH value and conductivity monitoring system are arranged on the circulating water pipe.
Furthermore, the pressure stabilizing system comprises a high-level water tank and a liquid level meter, the water supplementing system comprises a main pipe and an electric valve, the electric valve is linked with the liquid level meter of the pressure stabilizing system, and the pH value and conductivity monitoring system comprises a pH meter, a conductivity meter, a stirrer and a metering dosing pump.
Furthermore, the heat medium water pump is a variable frequency water pump.
The beneficial effect of this application does:
this application adopts the flue gas waste heat as the heat source, steam to in the mechanical force cooling tower export steam conduit heats, eliminate the white plume in cooling tower exit, can fall the desulfurizing tower entry flue gas to about 90 ℃ after the flue gas waste heat utilization, can reduce desulfurization system's thick liquid evaporation capacity water economy resource after desulfurization system's the smoke temperature reduces, and reduce desulfurizing tower entry flue gas temperature back desulfurizing tower export smoke temperature, the flue gas moisture content also can reduce thereupon, deepening the condenser receives the water effect, reduce pollutant discharge.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a water vapor cooling characteristic curve at the outlet of the mechanical cooling tower
FIG. 3 shows a temperature reduction characteristic curve of steam after heating at an outlet of a mechanical cooling tower, namely 1-high-temperature raw flue gas, 2-fluoroplastic flue gas cooler, 3-low-temperature raw flue gas, 4-low-temperature circulating water, 5-heating medium water pump, 6-high-temperature circulating water, 7-steam-water heat exchanger, 8-desulfurizing tower, 9-high-temperature clean flue gas, 10-fluoroplastic flue gas condenser, 11-low-temperature clean flue gas, 12-mechanical cooling tower, 13-high-temperature cooling water, 14-low-temperature cooling water, 15-cooling water booster pump, 16-low-temperature saturated steam, 17-demister, 18-induced draft fan, 19-high-temperature unsaturated steam, 20-chimney and 21-collecting cover.
Detailed Description
The technical scheme in the embodiment of the application is clearly and completely described below with reference to the accompanying drawings.
With reference to the attached drawing 1, the application provides a white system that disappears of hydrophily formula mechanical cooling tower, including desulfurizing tower 8, set up fluoroplastics gas cooler 2 on the flue of desulfurizing tower 8 entry, be provided with the cooling heat exchange tube in the fluoroplastics gas cooler 2, the both ends of cooling heat exchange tube are respectively through circulating pipe and soda heat exchanger 7's water inlet, delivery port intercommunication, and are provided with heat medium water pump 5 on at least one side circulating pipe, be provided with fluoroplastics gas condenser 10 on the flue of desulfurizing tower 8 export intercommunication chimney 20, be provided with the condensation heat exchange tube in the fluoroplastics gas condenser 10, the water inlet of condensation heat exchange tube passes through cooling water booster pump 15 and mechanical cooling tower 12 bottom intercommunication, the delivery port of condensation heat exchange tube passes through water supply pipeline intercommunication mechanical cooling tower upper portion, mechanical cooling tower 12 top exit is provided with collection cover 21, the collecting cover 21 is communicated with the induced draft fan 18 through a steam pipeline, a demister 17 is arranged on one side of the steam pipeline close to the collecting cover 21, and the steam-water heat exchanger 7 is arranged on the steam pipeline between the demister 17 and the induced draft fan 18;
in the embodiment, the cooling heat exchange tube and the condensation heat exchange tube are made of fluoroplastic materials, and fluoroplastic has extremely excellent chemical stability and can effectively resist the corrosion action of nitric oxide and oxysulfide in smoke components; the heat medium water pump 5 adopts a variable frequency water pump, and the temperature of unsaturated water vapor discharged from the outlet of the induced draft fan 18 can be adjusted according to the specific condition of the external environment; the circulating water pipe is made of stainless steel, and the circulating water in the circulating water pipe is provided with a water supplementing system, a pressure stabilizing system and a pH value and conductivity monitoring system on the demineralized water circulating water pipe.
The heat medium water circulation system consisting of the circulating water pipe, the steam-water heat exchanger 7 and the cooling heat exchange pipe belongs to closed circulation, the volume of the heat medium water circulation system can be changed when the water temperature is changed, and in order to keep the water pressure in the heat medium water circulation system stable, the circulating water pipe is provided with a pressure stabilizing system which comprises a high-level water tank, a liquid level meter and related pipelines and is used for maintaining the pressure stability of the system.
In an ideal state of the system, the heat medium water system does not have leakage and does not need water supplement, but micro-seepage phenomena may exist in the welding seams of the valve and the pipeline in the actual operation process, and fresh water needs to be supplemented to the system periodically to ensure the normal operation of the system. The water supplementing process is automatically controlled by a DCS, an electric valve of a main pipe of the water supplementing system is linked with a liquid level meter of a pressure stabilizing system, the electric valve of the main pipe of the water supplementing system is automatically opened when the liquid level of the high-level water tank is low, water is supplemented to the high-level water tank, and the valve is closed to supplement water after the water level reaches a set value.
Because fluoroplastics belongs to macromolecular structure, the heat exchange tube has slight permeability, and part acid gas can permeate into heat medium water circulating system in the flue gas, in order to prevent that circulating pipe corrodes after PH descends, heat medium water circulating system has set up pH value and conductance monitoring system. The pH value and conductivity monitoring system consists of a pH meter, a conductivity meter, a dosing tank, a stirrer, a metering dosing pump, relevant valves, pipelines and meters.
The pH value of the circulating water is 9.3, when the pH value of the circulating water is lower than 8.5, a metering dosing pump is started to dose the circulating system, and when the pH value of the circulating water is higher than 9.75, dosing is stopped; the agent is 15-30% NaOH solution, is manually prepared and stored in a dosing tank for controlling the pH value of circulating water. When the liquid level of the dosing tank is low, the system gives an alarm, and operators manually dispense medicines on site.
The set value of the conductivity of the circulating water is 5000 mu S/cm, and when the conductivity value of the circulating water exceeds 6000 mu S/cm, a low-level drain valve on the circulating water pipe is opened to drain the sewage; in the process, the system can automatically replenish water, and when the conductivity value of the circulating water is reduced to 4000 mu S/cm, the low-level water drain valve is closed. The low-level blowoff valve can be in an electric door mode and is remotely controlled through a DCS.
The working process of the application is as follows:
a fluoroplastic flue gas cooler 2 is arranged on a horizontal flue at an inlet of a desulfurizing tower 8, the flue gas cooler mainly transfers the heat of high-temperature raw flue gas 1 to water in a cooling heat exchange pipe, low-temperature circulating water 4 absorbs the heat released by the flue gas and transfers the heat to high-temperature circulating water 6, the circulating water completes the heat absorption and release process between a steam-water heat exchanger 7 and the fluoroplastic flue gas cooler 2 under the drive of a heat medium water pump 5, the high-temperature raw flue gas 1 is converted into low-temperature raw flue gas 3 after passing through the fluoroplastic flue gas cooler 2, the low-temperature raw flue gas 3 is converted into high-temperature clean flue gas 9 after being desulfurized by the desulfurizing tower 8 and is introduced into a fluoroplastic flue gas condenser 10, a mechanical cooling tower 12 mainly serves to provide a cold source for cooling the fluoroplastic flue gas for the fluoroplastic flue gas condenser 10, the desulfurized high-temperature clean flue gas 9 is cooled to low-temperature clean flue gas 11 by the fluoroplastic flue gas condenser 10, and low-temperature cooling water 14 is converted into high-temperature cooling water 13 by the flue gas heat, the cooling water is driven by a cooling water booster pump 15 to complete heat absorption and release between the fluoroplastic flue gas condenser 10 and the mechanical cooling tower 12. The outlet of the mechanical cooling tower 12 is provided with a collecting cover 21, the collected low-temperature saturated vapor 16 is firstly captured by a demister 17 to remove liquid fog drops, then the low-temperature saturated vapor is subjected to heat exchange in a vapor-water heat exchanger 7 under the action of an induced draft fan 18, the vapor is converted from a low-temperature saturated state to a high-temperature unsaturated state, and finally the converted vapor is discharged to the outside as high-temperature unsaturated vapor 19. The heat medium water pump 5 adopts a variable frequency water pump, the unsaturated water vapor temperature of the discharge port can be dynamically adjusted according to different external environmental conditions, the final water vapor is still in an unsaturated state after being mixed with the atmosphere, and the white smoke plume at the outlet of the cooling tower is fundamentally solved.
With reference to fig. 2, it is assumed that the water vapor state at the outlet of the mechanical cooling tower 12 is at point a (near saturation), and the corresponding ambient temperature state point is at point O. If the water vapor is directly discharged without being treated, the water vapor can be cooled along an AB curve, the water vapor state is in a saturated state after reaching a point B, then the water vapor and the ambient atmosphere are mixed and cooled, the temperature of the water vapor in the saturated state is reduced, water drops are separated out, gaseous water can be converted into liquid water, the liquid water drops can generate color change due to factors such as sunlight scattering and observation angle, the phenomenon becomes 'colored smoke plume', and particularly, the colors such as blue, gray, white and the like can be presented.
The saturated vapor of this application through 12 exports of flue gas waste heat heater power cooling tower, because total water content does not increase after the vapor temperature rises, the vapor can be by saturated attitude to unsaturated attitude transformation, changes to point B after figure 3 vapor state is heated by point A, and the vapor of this state discharges in the atmosphere, and the vapor changes according to the BO line, and the cooling curve is located unsaturated district all the time to avoid the production of colored smoke plume.
The above embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should not be limited by the present invention in order to make various modifications and improvements on the technical solution of the present invention without departing from the spirit of the present invention, which falls within the scope of the present invention defined by the claims.
Claims (6)
1. A white system that disappears of hydrophily formula machine force cooling tower, characterized by, including the desulfurizing tower, set up the fluoroplastics gas cooler on the flue of the said desulfurizing tower entrance, there are cooling heat exchange tubes in the said fluoroplastics gas cooler, both ends of the said cooling heat exchange tube communicate with water inlet, delivery port of the vapour-water heat exchanger through the circulating pipe separately, and there are heat medium water pumps on the circulating pipe of at least one side;
be provided with fluoroplastics flue gas condenser on the flue of desulfurizing tower export intercommunication chimney, be provided with the condensation heat exchange tube in the fluoroplastics flue gas condenser, the water inlet of condensation heat exchange tube passes through cooling water booster pump and mechanical force cooling tower bottom intercommunication, the delivery port of condensation heat exchange tube passes through water supply pipeline intercommunication mechanical force cooling tower upper portion, mechanical force cooling tower top exit is provided with collects the cover, collect the cover and pass through steam conduit and draught fan intercommunication, steam conduit is close to and collects cover one side and is provided with the defroster, steam-water heat exchanger sets up on the steam conduit between defroster and draught fan.
2. The system of claim 1, wherein the cooling heat exchange tube and the condensing heat exchange tube are both made of fluoroplastic materials.
3. The system of claim 1, wherein the water-borne mechanical cooling tower is made of stainless steel, and the circulating water in the circulating water pipe is demineralized water.
4. The water-borne mechanical cooling tower whitening system as set forth in claim 1, wherein the circulating water pipe is provided with a water replenishing system, a pressure stabilizing system, and a pH and conductivity monitoring system.
5. The system of claim 4, wherein the pressure stabilizing system comprises a header tank and a level gauge, the water replenishing system comprises a main pipe and an electric valve, the electric valve is interlocked with the level gauge of the pressure stabilizing system, and the pH value and conductivity monitoring system comprises a pH meter, a conductivity meter, a stirrer and a metering dosing pump.
6. The system of claim 1, wherein the heat medium pump is a variable frequency pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120871405.8U CN214582606U (en) | 2021-04-26 | 2021-04-26 | Water-borne type machine-force cooling tower white eliminating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120871405.8U CN214582606U (en) | 2021-04-26 | 2021-04-26 | Water-borne type machine-force cooling tower white eliminating system |
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| CN214582606U true CN214582606U (en) | 2021-11-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115771921A (en) * | 2022-12-19 | 2023-03-10 | 北京新世翼节能环保科技股份有限公司 | Fluoroplastic flue gas waste heat utilization circulating water quality adjusting system and control method |
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2021
- 2021-04-26 CN CN202120871405.8U patent/CN214582606U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115771921A (en) * | 2022-12-19 | 2023-03-10 | 北京新世翼节能环保科技股份有限公司 | Fluoroplastic flue gas waste heat utilization circulating water quality adjusting system and control method |
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