CN103307591A - Boiler blow down system - Google Patents
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- CN103307591A CN103307591A CN2013101987834A CN201310198783A CN103307591A CN 103307591 A CN103307591 A CN 103307591A CN 2013101987834 A CN2013101987834 A CN 2013101987834A CN 201310198783 A CN201310198783 A CN 201310198783A CN 103307591 A CN103307591 A CN 103307591A
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Abstract
The invention relates to a boiler blow down system which comprises a continuous blow down tank, a periodic blow down tank, a pressure control system and a recirculated cooling water return pipeline, wherein as for the continuous blow down tank, a tangential input port is used for inputting continuous blow down liquid, an output port at the top is used for outputting low-pressure steam, and an output port at the bottom is used for outputting bottom condensate into the periodic blow down tank; as for the periodic blow down tank, a first tangential input port is used for inputting the bottom condensate and the periodic blow down liquid of the continuous blow down tank, a second tangential input port is used for inputting recirculated cooling water, the output port at the top is used for discharging the low-pressure exhaust steam into atmosphere through the pressure control system, and the output port at the bottom is used for discharging tank bottom condensed water into the recirculated cooling water return pipeline; the pressure control system is arranged at the top of the periodic blow down tank and used for controlling the operating pressure of the periodic blow down tank and discharging low-pressure exhaust steam; and the recirculated cooling water return pipeline is arranged at the bottom of the periodic blow down tank and used for recovering tank bottom condensed water of the periodic blow down tank. The boiler blow down system can reasonably recycle the periodic blow down condensed water, which reduces water resource waste and boosts corporate profitability.
Description
Technical field
The present invention relates to the boiler applications technical field, particularly relate to a kind of boiler blow-out system that can carry out continuous blowdown and periodical blowdown.
Background technology
All at a large amount of use boilers, because the continuous evaporation and concentration of pot water, the impurity content in the residue water can be more and more higher in the existing oil of China, chemical industry, iron and steel, power station, medicine, printing and dyeing, city heat supply and other all multiple enterprises.For reducing the content of salt, alkali in the pot water, must from pot water, discharge frequently the sewage after a part concentrates, can reduce a pot water salt content by blowdown, avoid occuring priming, guarantee quality and the steam quality of pot water.When boiler water level is too high, also can reduce water level by blowdown.Except containing a small amount of salt, incrustation scale, silt and other sediment, the overwhelming majority is the demineralized water that contains amount of heat in the boiler blowdown water, and it is recycled, and can make the industry energy conservation consumption reduction, increases benefit.
China is most steam generator systems of operation at present, are provided with continuous blowdown and periodical blowdown, and most flow setting is that the blowdown condensed water is directly entered sewerage, seldom consider or do not consider at all the recycling of this part water.Wherein, periodical blowdown normally adopts atmospheric flashing, and the steam that tank deck flashes off directly enters atmosphere, and the condensed water at the bottom of the tank (comprising a large amount of recirculated cooling waters that is used for cooling) then enters trench nearby.
As shown in Figure 1, existing technological process is described as:
One, the continuous blowdown liquid from boiler tangentially enters the continuous blowdown tank, carries out flash distillation in tank, realizes the vapour-liquid separation.It is recycling that the low-pressure steam that the tank body top flashes off enters the steam vapour system of full device, the lime set of tank base by the first Liquid level adjusting valve LV1 adjust flux after (the reasonable liquid level of control continuous blowdown tank) enter boiler periodical blowdown tank.
Two, the continuous blowdown tank bottom lime set of discharging and boiler periodical blowdown liquid converge rear tangent line and enter the periodical blowdown tank, in tank, fully converge, contact and exchange heat with recirculated cooling water, finish cooling, flash distillation and the vapour-liquid of continuous blowdown pot bottom lime set and periodical blowdown and separate.
Three, the low pressure exhaust steam that flashes off of tank body top does not recycle because its temperature, pressure (normal pressure) are all excessively low, directly enters atmosphere.The lime set of tank base by the second Liquid level adjusting valve LV2 adjust flux after the reasonable liquid level of tank (control periodical blowdown) enter full factory sewerage.
Four, be provided with temperature control valve (TCV) TV at the recirculated cooling water pipeline, aperture by control temperature control valve (TCV) TV, adjusting enters the flow of periodical blowdown tank cooling water, and the temperature of periodical blowdown pot bottom discharge opeing is controlled at below 40 ℃, satisfies the sewage discharge requirement of full factory.
The problem that above-mentioned flow setting exists: periodical blowdown adopts atmospheric flashing usually, condensed water at the bottom of the tank (comprising a large amount of recirculated cooling water or the industry water that are used for cooling) is because hypotony, can't normally return the cooling water return system, then can only enter trench (sewerage) nearby, cause a large amount of water resource waste.Simultaneously, because pot water contains iron rust and the impurity such as precipitation grain slag that form are processed in dosing, and the purpose of periodical blowdown also is regularly the precipitated impurities such as these grain slags to be discharged boiler, does not directly enter surrounding environment by trench if do not carry out recycling, then can cause the water pollution of surrounding environment.
Therefore, the present invention optimizes the flow scheme design of boiler blow-out system, reclaim a large amount of blowdown condensed waters and be one have a high potential, widely used conservation measures, can be manufacturing enterprise and bring huge economic benefit, domestic every profession and trade all should cause enough attention.
Summary of the invention
Technical problem to be solved by this invention provides a kind of boiler blow-out system, be used for to solve the problem that the flow scheme design to boiler blow-out system is optimized.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of boiler blow-out system comprises continuous blowdown tank, periodical blowdown tank, control pressurer system and cooling water return pipeline:
Described continuous blowdown tank, it is used for continuous blowdown liquid is carried out flash distillation and vapor-liquid separation, is provided with the tangential input port of continuous blowdown tank, continuous blowdown tank top delivery outlet and continuous blowdown pot bottom delivery outlet; The tangential input port of described continuous blowdown tank is used for input continuous blowdown liquid, described continuous blowdown tank top delivery outlet is used for the low-pressure steam of output after flash distillation, and described continuous blowdown pot bottom delivery outlet is used for exporting the bottom lime set after flash distillation to described periodical blowdown tank;
Described periodical blowdown tank, it is used for that bottom lime set and periodical blowdown liquid to the output of continuous blowdown tank cools off, flash distillation and vapor-liquid separation, is provided with periodical blowdown tank the first tangential input port, periodical blowdown tank the second tangential input port, periodical blowdown tank top delivery outlet and periodical blowdown pot bottom delivery outlet; Described periodical blowdown tank the first tangential input port is used for inputting bottom lime set and the periodical blowdown liquid of described continuous blowdown tank, described periodical blowdown tank the second tangential input port is used for the input recirculated cooling water, described periodical blowdown tank top delivery outlet is used for the low pressure exhaust steam is entered atmosphere by described control pressurer system, and described periodical blowdown pot bottom delivery outlet is used for condensed water at the bottom of the tank that obtains is entered the cooling water return pipeline;
Described control pressurer system, it is arranged on described periodical blowdown tank top, is used for making the operating pressure of periodical blowdown tank be higher than described cooling water return line pressure, and atmosphere is sent in the low pressure exhaust steam of again the periodical blowdown tank being discharged;
Described cooling water return pipeline, it is arranged on described periodical blowdown pot bottom, is used for reclaiming condensed water at the bottom of the tank that described periodical blowdown tank enters.
On the basis of technique scheme, the present invention can also do following improvement.
Further, be provided with the first Liquid level adjusting valve between described continuous blowdown pot bottom delivery outlet and described periodical blowdown tank the first tangential input port, described the first Liquid level adjusting valve is connected with again the first liquid level indicator controller, described the first liquid level indicator controller connects the first fluid level transmitter, and described the first fluid level transmitter is installed in the side direction of described continuous blowdown tank.
Further, described continuous blowdown tank top equipped at outlet port is provided with steam vapour system, and it is used for carrying out recycling to the low-pressure steam of described continuous blowdown tank output.
Further, described control pressurer system comprises a pressure-regulating valve, and it is connected with described periodical blowdown tank, and atmosphere is sent in the low pressure exhaust steam that the periodical blowdown tank is discharged.
Further, described control pressurer system also comprises pressure transmitter, pressure indicator controller and pressure-regulating valve locator, described pressure transmitter is connected with described periodical blowdown tank, described pressure indicator controller is connected with described pressure transmitter, described pressure-regulating valve locator one end connects described pressure indicator controller, and the other end connects described pressure-regulating valve.
Further, the operating pressure of described periodical blowdown tank is 0.35 MPa, and described cooling water return line pressure is 0.25 MPa.
Further, be provided with the second Liquid level adjusting valve between described periodical blowdown pot bottom delivery outlet and the described cooling water return pipeline, described the second Liquid level adjusting valve is connected with again the second liquid level indicator controller, described the second liquid level indicator controller connects the second fluid level transmitter, and described the second fluid level transmitter is installed in the side direction of described periodical blowdown tank.
Further, described periodical blowdown tank is provided with temperature control valve (TCV) on the second tangential input port, and described temperature control valve (TCV) connects a temperature indicator controller, and described temperature indicator controller connects a temperature transmitter, and described temperature transmitter is connected with described periodical blowdown tank.
The invention has the beneficial effects as follows:
One, sets up control pressurer system in the periodical blowdown tank top, the operating pressure of Regular Drain system is increased to 0.35MPaG by normal pressure, a little more than cooling water return line pressure (0.25MPaG), to satisfy the needs of pressure of return water;
Condensed water at the bottom of the tank of two, the periodical blowdown pot bottom being discharged (comprising a large amount of recirculated cooling water or industry waters that are used for cooling) access cooling water return pipeline reclaims condensed water at the bottom of this part tank, and is recycling;
Three, the operating pressure with periodical blowdown is increased to 0.35MPaG, can reduce the exhaust steam that the periodical blowdown tank top enters atmosphere simultaneously, and condensation water quantity at the bottom of the increase tank reaches the maximization of recycling condensing water, has further reduced the waste of water resource.
In sum, carry out process optimization, set up a small amount of facility for the ubiquitous problem of domestic present boiler blow-out system, rationally recycle the condensed water (comprising the recirculated cooling water for cooling) of periodical blowdown, reduce the waste of water resource (blowdown demineralized water and cooling water), make enterprise realize energy-conservation, consumption reduction, reduce discharging, increase the performance of enterprises.
Description of drawings
Fig. 1 is the structural representation of boiler Regular Drain system in the prior art of the present invention;
Fig. 2 is the structural representation of boiler blow-out system of the present invention.
In the accompanying drawing, the list of parts of each label representative is as follows:
1, continuous blowdown tank; 2, periodical blowdown tank; 3, control pressurer system; 4, cooling water return pipeline; 5, steam vapour system; 11, the tangential input port of continuous blowdown tank; 12, continuous blowdown tank top delivery outlet; 13, continuous blowdown pot bottom delivery outlet; 21, periodical blowdown tank the first tangential input port; 22, periodical blowdown tank the second tangential input port; 23, periodical blowdown tank top delivery outlet; 24, periodical blowdown pot bottom delivery outlet; LV1, the first Liquid level adjusting valve; LIC1, the first liquid level indicator controller; LT1, the first fluid level transmitter; LV2, the second Liquid level adjusting valve; LIC2, the second liquid level indicator controller; LT2, the second fluid level transmitter; PV, pressure-regulating valve; PT, pressure transmitter; PIC, pressure indicator controller; PY, pressure-regulating valve locator; TV, temperature control valve (TCV); TIC, temperature indicator controller; TT, temperature transmitter.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting scope of the present invention.
As shown in Figure 2, embodiment one has provided a kind of boiler blow-out system, comprises continuous blowdown tank 1, periodical blowdown tank 2, control pressurer system 3 and cooling water return pipeline 4:
Described continuous blowdown tank 1, it is used for continuous blowdown liquid is carried out flash distillation and vapor-liquid separation, is provided with the tangential input port 11 of continuous blowdown tank, continuous blowdown tank top delivery outlet 12 and continuous blowdown pot bottom delivery outlet 13.The continuous blowdown tank.The tangential input port 11 of described continuous blowdown tank is used for input continuous blowdown liquid, described continuous blowdown tank top delivery outlet 12 is used for the low-pressure steam of output after flash distillation, and described continuous blowdown pot bottom delivery outlet 13 is used for exporting the bottom lime set after flash distillation to described periodical blowdown tank 2;
Described periodical blowdown tank 2, it is used for that bottom lime set and periodical blowdown liquid to the output of continuous blowdown tank cools off, flash distillation and vapor-liquid separation, is provided with periodical blowdown tank the first tangential input port 21, periodical blowdown tank the second tangential input port 22, periodical blowdown tank top delivery outlet 23 and periodical blowdown pot bottom delivery outlet 24.Described periodical blowdown tank the first tangential input port 21 is used for inputting bottom lime set and the periodical blowdown liquid of described continuous blowdown tank, described periodical blowdown tank the second tangential input port 22 is used for the input recirculated cooling water, described periodical blowdown tank top delivery outlet 23 is used for the low pressure exhaust steam is entered atmosphere by described control pressurer system, and described periodical blowdown pot bottom delivery outlet 24 is used for condensed water at the bottom of the tank that obtains is entered cooling water return pipeline 4;
Described control pressurer system 3, it is arranged on described periodical blowdown tank 2 tops, is used for making the operating pressure of periodical blowdown tank 2 be higher than described cooling water return line pressure, and atmosphere is sent in the low pressure exhaust steam of again periodical blowdown tank 2 being discharged;
Described cooling water return pipeline 4, it is arranged on described periodical blowdown tank 2 bottoms, is used for reclaiming condensed water at the bottom of the tank that described periodical blowdown tank 2 enters.
Be provided with the first Liquid level adjusting valve LV1 between described continuous blowdown pot bottom delivery outlet 13 and described periodical blowdown tank the first tangential input port 21, described the first Liquid level adjusting valve LV1 is connected with again the first liquid level indicator controller LIC1, described the first liquid level indicator controller LIC1 connects the first fluid level transmitter LT1, and described the first fluid level transmitter LT1 is installed in the side direction of described continuous blowdown tank 1.
Described control pressurer system 3 comprises a pressure-regulating valve PV, it is connected with described periodical blowdown tank, and the low pressure exhaust steam that periodical blowdown tank 2 is discharged sent into atmosphere, also comprise pressure transmitter PT, pressure indicator controller PIC and pressure-regulating valve locator PY, described pressure transmitter PT is connected with described periodical blowdown tank, described pressure indicator controller PIC is connected with described pressure transmitter PT, described pressure-regulating valve locator PY one end connects described pressure indicator controller PIC, and the other end connects described pressure-regulating valve PV.
After control pressurer system was regulated, the operating pressure of described periodical blowdown tank was 0.35 MPa, and described cooling water return line pressure is 0.25 MPa.
Be provided with the second Liquid level adjusting valve LV2 between described periodical blowdown pot bottom delivery outlet 24 and the described cooling water return pipeline 4, described the second Liquid level adjusting valve LV2 is connected with again the second liquid level indicator controller LIC2, described the second liquid level indicator controller LIC2 connects the second fluid level transmitter LT, and described the second fluid level transmitter LT is installed in the side direction of described periodical blowdown tank.
Described periodical blowdown tank is provided with temperature control valve (TCV) TV on the second tangential input port 22, and described temperature control valve (TCV) TV connects a temperature indicator controller TIC, described temperature indicator controller TIC connects a temperature transmitter TT, and described temperature transmitter TT is connected with described periodical blowdown tank 2.
The technological process of the boiler blow-out system of the present embodiment is:
Continuous blowdown liquid from boiler tangentially enters the continuous blowdown tank, carries out flash distillation in tank, realizes the vapour-liquid separation.It is recycling that the low-pressure steam that the tank body top flashes off enters the steam vapour system of full device, the lime set of tank base by the first Liquid level adjusting valve LV adjust flux after (the reasonable liquid level of control continuous blowdown tank) enter boiler periodical blowdown tank.
The bottom lime set of continuous blowdown tank and boiler periodical blowdown liquid converge the rear periodical blowdown tank that tangentially enters, and fully converge, contact with recirculated cooling water in tank, finish cooling, flash distillation and the vapour-liquid of continuous blowdown pot bottom lime set and periodical blowdown and separate.
The low pressure exhaust steam that the tank body top of periodical blowdown tank flashes off enters atmosphere behind the aperture control flow by pressure-regulating valve PV.The discharge capacity of control pressurer system control flash steam, and the operating pressure of periodical blowdown tank is controlled at 0.35 MPa (gauge pressure), with respect to atmospheric flashing, the operating pressure of periodical blowdown tank is brought up to 0.35 MPa (gauge pressure), can reduce the discharge capacity of low pressure exhaust steam, reduce material loss.
Operating temperature is 40 ℃, operating pressure is condensed water at the bottom of the tank of periodical blowdown tank of 0.35 MPa (gauge pressure), enter the intrinsic cooling water return pipeline of full factory by (the reasonable liquid level of control periodical blowdown tank) behind the second Liquid level adjusting valve LV2 adjust flux, recycling.
The pipeline of inputting the second tangential input port of recirculated cooling water at the periodical blowdown tank is provided with temperature control valve (TCV) TV, aperture by control and regulation valve TV, adjusting enters the flow of periodical blowdown tank cooling water, the temperature of condensed water at the bottom of the tank of periodical blowdown tank is controlled at below 40 ℃, satisfies the design parameter requirement of full factory recirculated water return piping.
Though contain a small amount of impurity (salt, alkali) at the bottom of this part tank in the condensed water, flow is much smaller than full factory recirculated water total amount.With 200,000 ton/years of methanol devices or 60000Nm
3/ h device for producing hydrogen is example, and the boiler blow-off condensation water quantity is 15t/h approximately, and full factory recirculated water total amount is tens thousand of tphs.So this partial condensation water enters the cooling water return pipeline, can not impact whole system.
The application of the present embodiment for manufacturing enterprise, not only can be reclaimed a large amount of blowdown condensed waters, saves the consumption of recirculated cooling water supplementing water (fresh water), can also reduce quantity of wastewater effluent simultaneously, produces obvious economic benefit and huge social benefit.Related cooling water return pipeline belongs to the intrinsic pipeline of original device, do not need additionally to increase any improvement expenses, so with respect to the circulating backwater pipeline that the prior art design only need increase by 1 cover control pressurer system (general control pressurer system gets final product in the industry) and seldom measure, total cost is 30,000 yuan (RMB) approximately.
Be that the steam generator system of 60t/h (is equivalent to 200,000 ton/years of methanol devices or 60000Nm for gas production
3/ h device for producing hydrogen), carry out technological process with 30 ℃ recirculated cooling waters as cooling medium and simulate the Ji technical Analysis of passing through of going forward side by side, approximately 130,000 tons of the annual recyclable blowdown condensed waters of the system of the present embodiment are equivalent to can save recirculated cooling water supplementing water (fresh water) and also are about 130,000 tons every year.
Price (6.0 yuan/tons) according to the North Shaanxi fresh water can be the direct economic benefit that enterprise brings 780,000 yuan every year.Through the technological process analog computation, the discharge capacity of above-mentioned condensed water is and the substantially proportional increase of the steam production of boiler.So, for the steam generator system of 100t/h, if the flow setting of the present embodiment can be saved approximately 220,000 tons of recirculated cooling water supplementing water (fresh water) every year, can be enterprise every year and bring approximately 1,320,000 yuan of direct economic benefits.
Therefore, the boiler blow-out system of the present embodiment can be widely used in oil, the chemical plant installations such as the home and abroad is newly-built, the synthetic ammonia of reorganization and expansion, methyl alcohol, producing hydrogen from steam conversion, also can in the enterprise of iron and steel, power station, medicine, printing and dyeing, city heat supply and other many use boilers, use, for energy-conservation, the consumption reduction of whole enterprise, reduce discharging, increase the aspect such as the performance of enterprises and all have very high practical value and application prospect widely.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a boiler blow-out system is characterized in that, comprises continuous blowdown tank (1), periodical blowdown tank (2), control pressurer system (3) and cooling water return pipeline (4):
Described continuous blowdown tank (1), it is used for continuous blowdown liquid is carried out flash distillation and vapor-liquid separation, is provided with the tangential input port of continuous blowdown tank (11), continuous blowdown tank top delivery outlet (12) and continuous blowdown pot bottom delivery outlet (13); The tangential input port of described continuous blowdown tank (11) is used for input continuous blowdown liquid, described continuous blowdown tank top delivery outlet (12) is used for the low-pressure steam of output after flash distillation, and described continuous blowdown pot bottom delivery outlet (13) is used for exporting the bottom lime set after flash distillation to described periodical blowdown tank (2);
Described periodical blowdown tank (2), it is used for that bottom lime set and periodical blowdown liquid to the output of continuous blowdown tank cools off, flash distillation and vapor-liquid separation, is provided with periodical blowdown tank the first tangential input port (21), periodical blowdown tank the second tangential input port (22), periodical blowdown tank top delivery outlet (23) and periodical blowdown pot bottom delivery outlet (24); Described periodical blowdown tank the first tangential input port (21) is used for inputting bottom lime set and the periodical blowdown liquid of described continuous blowdown tank, described periodical blowdown tank the second tangential input port (22) is used for the input recirculated cooling water, described periodical blowdown tank top delivery outlet (23) is used for the low pressure exhaust steam is entered atmosphere by described control pressurer system (3), and described periodical blowdown pot bottom delivery outlet (24) is used for condensed water at the bottom of the tank that obtains is entered cooling water return pipeline (4);
Described control pressurer system (3), it is arranged on described periodical blowdown tank (2) top, be used for making the operating pressure of periodical blowdown tank (2) be higher than described cooling water return pipeline (4) pressure, atmosphere is sent in the low pressure exhaust steam of again periodical blowdown tank (2) being discharged;
Described cooling water return pipeline (4), it is arranged on described periodical blowdown tank (2) bottom, is used for reclaiming condensed water at the bottom of the tank that described periodical blowdown tank (2) enters.
2. boiler blow-out system according to claim 1, it is characterized in that, be provided with the first Liquid level adjusting valve (LV1) between described continuous blowdown pot bottom delivery outlet (13) and described periodical blowdown tank the first tangential input port (21), described the first Liquid level adjusting valve (LV1) is connected with again the first liquid level indicator controller (LIC1), described the first liquid level indicator controller (LIC1) connects the first fluid level transmitter (LT), and described the first fluid level transmitter (LT) is installed in the side direction of described continuous blowdown tank (1).
3. boiler blow-out system according to claim 1, it is characterized in that, described continuous blowdown tank top delivery outlet (12) locates to be provided with steam vapour system (5), and it is used for carrying out recycling to the low-pressure steam of described continuous blowdown tank (1) output.
4. boiler blow-out system according to claim 1, it is characterized in that, described control pressurer system (3) comprises a pressure-regulating valve (PV), and it is connected with described periodical blowdown tank (2), and atmosphere is sent in the low pressure exhaust steam that periodical blowdown tank (2) is discharged.
5. boiler blow-out system according to claim 4, it is characterized in that, described control pressurer system (3) also comprises pressure transmitter (PT), pressure indicator controller (PIC) and pressure-regulating valve locator (PY), described pressure transmitter (PT) is connected with described periodical blowdown tank (2), described pressure indicator controller (PIC) is connected with described pressure transmitter (PT), described pressure-regulating valve locator (PY) end connects described pressure indicator controller (PIC), and the other end connects described pressure-regulating valve (PV).
6. boiler blow-out system according to claim 1 is characterized in that, the operating pressure of described periodical blowdown tank (2) is 0.35 MPa, and described cooling water return line pressure is 0.25 MPa.
7. boiler blow-out system according to claim 1, it is characterized in that, be provided with the second Liquid level adjusting valve (LV2) between described periodical blowdown pot bottom delivery outlet (24) and the described cooling water return pipeline (4), described the second Liquid level adjusting valve (LV2) is connected with again the second liquid level indicator controller (LIC2), described the second liquid level indicator controller (LIC2) connects the second fluid level transmitter (LT2), and described the second fluid level transmitter (LT2) is installed in the side direction of described periodical blowdown tank (2).
8. boiler blow-out system according to claim 1, it is characterized in that, described periodical blowdown tank is provided with temperature control valve (TCV) (TV) on the second tangential input port (22), and described temperature control valve (TCV) (TV) connects a temperature indicator controller (TIC), described temperature indicator controller (TIC) connects a temperature transmitter (TT), and described temperature transmitter (TT) is connected with described periodical blowdown tank (2).
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| CN107514624A (en) * | 2017-09-21 | 2017-12-26 | 无锡华光锅炉股份有限公司 | A kind of horizontal type waste heat boiler hydrophobic structure |
| CN108302518A (en) * | 2018-01-02 | 2018-07-20 | 芜湖东旭光电科技有限公司 | Boiler system |
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| CN103307591B (en) | 2014-11-26 |
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