CN211060100U - Boiler feed water deoxidization system - Google Patents
Boiler feed water deoxidization system Download PDFInfo
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- CN211060100U CN211060100U CN201921858912.7U CN201921858912U CN211060100U CN 211060100 U CN211060100 U CN 211060100U CN 201921858912 U CN201921858912 U CN 201921858912U CN 211060100 U CN211060100 U CN 211060100U
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Abstract
The utility model discloses a boiler feed water deoxidization system, including oxygen-eliminating device and demineralized water tank, oxygen-eliminating device upper portion is the oxygen-eliminating tower, the oxygen-eliminating device lower part is deoxidization water tank and deoxidization shot-water tank, oxygen-eliminating tower and deoxidization water tank intercommunication, the oxygen-eliminating tower top is equipped with gas vent I, deoxidization shot-water tank top is equipped with deoxidization shot-water inlet, deoxidization shot-water tank bottom is equipped with deoxidization shot-water outlet, deoxidization shot-water tank middle part is equipped with the gap, deoxidization shot-water tank top is equipped with the water jet, gas vent I links to each other with; the desalting water tank is provided with a desalting water inlet and a desalting water outlet, the desalting water inlet is connected with an overflow gap on the deoxidizing water jetting tank through a pipeline, and the desalting water outlet is connected with the deoxidizing water jetting water inlet through a pipeline. The utility model discloses saved the supplementary deoxidization system of chemistry, add the circulation tank of demineralized water case, avoided the supplementary deoxidization of chemistry to add the corruption of medicament to equipment, be favorable to the maintenance of equipment.
Description
Technical Field
The utility model belongs to boiler feed water treatment field, concretely relates to boiler feed water deoxidization system.
Background
In the process of boiler feed water treatment, oxygen removal is a very critical link. Oxygen is a main corrosive substance of a water supply system and a boiler, and the oxygen in the water supply should be quickly removed, otherwise, the oxygen can corrode the water supply system and parts of the boiler, iron oxide which is a corrosion product can enter the boiler and deposit or attach on the pipe wall and the heated surface of the boiler to form indissolvable iron scale with poor heat transfer, and pitting can occur on the inner wall of a pipeline due to corrosion, so that the resistance coefficient is increased. When the pipeline is seriously corroded, even pipeline explosion accidents can happen. The oxygen is required to be removed from a steam boiler with the evaporation capacity of more than or equal to 2 tons per hour and a hot water boiler with the water temperature of more than or equal to 95 ℃ specified by the state. Numerous boiler feedwater treatment workers have been seeking efficient and economical methods of oxygen removal over the years, with vacuum oxygen removal being an excellent one.
The working principle of vacuum deoxygenation is to apply henry's law and dalton's law, from which it is known that in a closed container, any gas is present on the water surface at the same time, and the solubility of the gas is directly proportional to its own partial pressure, and the solubility of the gas is only related to its own partial pressure. At a certain pressure, as the temperature of the water increases, the partial pressure of the water vapor increases, while the partial pressures of the air and oxygen become smaller and smaller. At 100 ℃, the partial pressure of oxygen is reduced to zero, and the dissolved oxygen in water is also reduced to zero. When the pressure above the water surface is less than atmospheric pressure, the solubility of oxygen may also reach zero at lower water temperatures. Thus, the oxygen molecules in the space above the water surface are discharged or converted into other gases, so that the partial pressure of the oxygen is zero, and the oxygen in the water continuously escapes, thereby achieving the effect of removing oxygen. The vacuum deaerator is based on the principle and is equipment for boiling water at low temperature under vacuum and removing oxygen, nitrogen, carbon dioxide and other gases contained in the water.
However, practice shows that the effect of the single deaerator is poor, and in the production operation of our factory, because the deaerator is poor in effect, the mode of vacuum deaeration and chemical auxiliary deaeration is adopted for operation, although the deaeration effect reaches the operation requirement, the chemical residue added by the chemical auxiliary deaeration has certain harm to a steam turbine, a boiler and a steam pipeline, and the effect is unstable.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned prior art existence the exclusive use oxygen-eliminating device deoxidization effect poor to and vacuum deoxidization adds the supplementary deoxidization of chemistry of supplementary deoxidization with chemistry and adds the medicament residue and have certain harm to steam turbine, boiler and steam conduit, and the unstable problem of effect, the utility model provides a boiler feedwater deoxidization system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a boiler water supply deoxidization system comprises a deaerator and a desalting water tank, wherein the deaerator is inverted T-shaped, the upper part of the deaerator is provided with a deaerating tower, the lower part of the deaerator is provided with a deoxidization water tank and a deoxidization water injection tank, the deoxidization water tank and the deoxidization water injection tank are separated by a partition plate, the deaerating tower is communicated with the deoxidization water tank, and the lower part of the deoxidization water tank is provided with a deoxidization water outlet; the top of the deoxidizing tower is provided with an exhaust port I, the body of the deoxidizing tower is provided with a water inlet to be deoxidized, the top of the deoxidizing water jet box is provided with a water return port and a deoxidizing water jet water inlet, the bottom of the deoxidizing water jet box is provided with a deoxidizing water jet water outlet, the middle of the deoxidizing water jet box is provided with an overflow port, a water injector is arranged above the deoxidizing water jet box, the water inlet of the water injector is connected with the deoxidizing water jet water outlet through a pipeline, the pipeline is provided with a water pump I, the mixed liquid outlet of the water injector is connected with the water return port of the deoxidizing water jet box, and the exhaust; be equipped with demineralized water inlet and demineralized water delivery port on the demineralized water tank, the demineralized water inlet passes through the overflow gap that pipeline and deoxidization jetted water on the case and links to each other, and the demineralized water delivery port passes through the pipeline and links to each other with deoxidization jetted water inlet, is equipped with water pump II on this pipeline, and the deoxidization jetted water case is gone into to demineralized water pump II in the demineralized water tank.
Furthermore, an exhaust port II is arranged at the top of the deaerating water tank and connected with an air inlet of the water ejector through a pipeline, and a valve is arranged on the pipeline.
Furthermore, a heating sleeve is arranged outside the deoxidizing water tank, a circulating water inlet and a circulating water outlet are formed in the heating sleeve, and hot water forms water circulation in the heating sleeve.
Furthermore, two parallel pipelines are arranged between the water inlet of the water injector and the oxygen removal water injection water outlet, and a water pump is respectively arranged on each pipeline.
Furthermore, be equipped with the stirring rake in the deoxidization water tank, the puddler of stirring rake wears out deoxidization water tank shell, and the puddler passes through sealed bearing to be fixed on deoxidization water tank shell.
Further, the stirring paddle is arranged at the top of the deoxygenation water tank; or the stirring paddle is arranged at the side end of the deoxygenation water tank, and the other end of the stirring rod is fixed on the partition plate through a bearing.
The use method of the system comprises the following steps: (1) heating the deoxygenation water tank to 40-45 ℃; (2) starting a water pump I and a water ejector, vacuumizing the deoxygenation water tank, and setting the vacuum degree to be-80 Pa; (3) and (3) starting a water pump II, pumping the demineralized water in the demineralized water tank into the deoxidizing water jetting tank by the water pump II, mixing the high-temperature water in the deoxidizing water jetting tank, reducing the water temperature of the deoxidizing water jetting tank, and adjusting the direct-discharge water in the deoxidizing water jetting tank to the demineralized water tank until the water level is balanced and the water level is continuously circulated.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the utility model discloses the system, chemical auxiliary deoxidization system has been saved, the circulation tank of demineralized water case has been add, be equipped with demineralized water inlet and demineralized water delivery port on the demineralized water case, the demineralized water inlet passes through the pipeline and links to each other with the gap on the deoxidization jetting case, the demineralized water delivery port passes through the pipeline and links to each other with deoxidization jetting water inlet, be equipped with water pump II on this pipeline, water pump II goes into the deoxidization jetting case with the demineralized water pump in the demineralized water case, unnecessary water flows back to the demineralized water case through the gap in the deoxidization jetting case, the demineralized water case becomes the circulation with the deoxidization jetting case, in water injector always working process, the temperature in the deoxidization jetting case constantly risees, and water pump II goes into the deoxidization jetting case with the microthermal demineralized water pump in the demineralized water case, the demineralized water of high temperature in the deoxidization jetting case flows from the gap, flow back to the demineralized water case, adjust to water level balance, so circulate, reduce the temperature in the deoxidization jetting case, the efficiency of taking out vacuum is improved, the maintenance utility model discloses a water is dissolved oxygen below 5 ug/L in the deoxidization water, the deoxidization effect reaches the deoxidization operation requirement, and has been favorable to the chemical auxiliary.
(2) The deoxidization shooting box temperature is high, moves at ordinary times and need to change water 1~2 times every shift, arranges to the circulation pond, and the utility model discloses the high temperature water with the deoxidization shooting box circulation returns to the desalination water tank, cyclic utilization has practiced thrift the water cost. In addition, high-temperature water circulated by the deoxidizing water-jetting tank returns to the demineralized water tank, the temperature of demineralized water rises, the temperature of boiler feed water rises, the boiler efficiency is improved, the power generation capacity is improved, and the income is increased.
(3) The utility model discloses cancel the supplementary deoxidization of chemistry, the decision is according to vacuum oxygen-eliminating device theory of operation, take and reduce deoxidization shooting box temperature, increase a water pump promptly, the demineralized water in the demineralized water box is toward deoxidization shooting box moisturizing always, one straight row of water of deoxidization shooting box is to the demineralized water box, adjust to water level balance, constantly circulate always, reach the purpose that reduces temperature in the deoxidization shooting box, improve vacuum oxygen-eliminating device work efficiency, the unit equipment safety has been guaranteed, through the operation practice, deoxidization water box water temperature drops to 45 ℃, the oxygen-eliminating device vacuum improves to-80 Pa, below 5 ug/L of dissolved oxygen, the deoxidization effect reaches the operation requirement.
(4) The utility model discloses cancelled the supplementary deoxidization of chemistry, consequently also cancelled the supplementary deoxidization system of chemistry, reduced the equipment maintenance cost of the supplementary deoxidization system of chemistry, practiced thrift the chemical agent expense.
(5) In the prior art, because the temperature of the deoxidizing water jet tank is high, water needs to be changed for 1-2 times during normal operation, and the water is discharged to a circulating water pool, the utility model returns the high-temperature water circulating by the deoxidizing water jet tank to the desalting water tank for recycling, so that the water cost is saved; the utility model discloses the circulating high temperature water of water tank is penetrated to the deoxidization returns to the demineralized water tank, and the temperature of demineralized water risees, and boiler feed water temperature risees, and boiler efficiency improves, and the generated energy improves, and the income increases.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the interior of a deoxygenated water tank and a deoxygenated water jet;
FIG. 3 is a schematic view of the structure with the addition of an exhaust port II;
FIG. 4 is a schematic view of the structure after the addition of a heating jacket;
FIG. 5 is a schematic view of the interior of a deoxygenated water tank and deoxygenated water jet tank after the addition of a heating jacket;
FIG. 6 is a schematic structural view of a parallel pipeline additionally arranged between a water injector and a deoxidizing water-jetting tank;
FIG. 7 is a schematic view of the addition of a vertical paddle;
FIG. 8 is a schematic diagram of the addition of a horizontally oriented paddle.
In the figure, 1-a deaerating tower, 101-an exhaust port I, 102-a water inlet to be deaerated; 2-a deoxygenated water tank, 201-a deoxygenated water outlet, 202-a circulating water inlet, 203-a circulating water outlet, 204-an exhaust port II, 3-a deoxygenated water jetting tank, 301-a water return port, 302-a deoxygenated water jetting inlet, 303-a deoxygenated water jetting outlet, 304-an overflow port, 305-a water pump I, 4-a partition plate, 5-a water injector, 6-a demineralized water tank, 601-a demineralized water inlet, 602-a demineralized water outlet, 603-a water pump II, 7-a stirring paddle, 701-a stirring rod and 702-a sealed bearing.
Detailed Description
In order to clearly understand the technical features, objects and effects of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Examples
As shown in fig. 1 and 2, a boiler water supply deoxidization system comprises a deaerator and a desalting water tank 6, wherein the deaerator is in an inverted T shape, the upper part of the deaerator is a deaerator 1, the internal structure of the deaerator 1 is the prior art, the lower part of the deaerator is a deaerator water tank 2 and a deaerator water injection tank 3, the deaerator water tank 2 and the deaerator water injection tank 2 are separated by a partition plate 4, the deaerator 1 is communicated with the deaerator water tank 2, and a deaerator water outlet 201 is formed in the lower part of the deaerator water tank; the top of the deoxidation tower 1 is provided with an exhaust port I101, the body of the deoxidation tower 1 is provided with a water inlet 102 to be deoxidized, the top of the deoxidation shooting box 3 is provided with a water return port 301 and a deoxidation shooting water inlet 302, the bottom of the deoxidation shooting box is provided with a deoxidation shooting water outlet 303, the middle of the deoxidation shooting box 3 is provided with an overflow port 304, a water injector 5 is arranged above the deoxidation shooting box 3, the water inlet of the water injector 5 is connected with the deoxidation shooting water outlet 303 through a pipeline, the pipeline is provided with a water pump I305, the mixed liquid outlet of the water injector 5 is connected with the water return port 301 of the deoxidation shooting box, and the exhaust port I101 is connected with the; the desalting water tank 6 is provided with a desalting water inlet 601 and a desalting water outlet 602, the height of the position of the desalting water inlet 601 is lower than that of an overflow opening 304 on the deoxidizing water jet tank 3, the desalting water inlet 601 is connected with the overflow opening 304 on the deoxidizing water jet tank 3 through a pipeline, the desalting water outlet 602 is connected with the deoxidizing water jet inlet 302 through a pipeline, the pipeline is provided with a water pump II 603, the desalting water in the desalting water tank 6 is pumped into the deoxidizing water jet tank 3 by the water pump II 603, redundant water in the deoxidizing water jet tank 3 flows back to the desalting water tank through the overflow opening 304, and the desalting water tank and the deoxidizing water jet tank form circulation.
The utility model relates to a boiler feed water deoxidization system's working process does:
the water inlet 102 to be deoxidized is connected with a demineralized water outlet of a water melting workshop, and water to be deoxidized enters the deoxidizing tower 1 from the water inlet 102 to be deoxidized so as to fall into the deoxidizing water tank 2; starting the water pump I305 and the water injector 5, wherein the water pump I305, the water injector 5 and the deoxidizing water-jetting tank 3 form a vacuumizing device, and vacuumizing the deoxidizing water tank 2; the air pressure in the deoxygenation water tank 2 is reduced, gas in water escapes and is discharged from the air outlet I101, the water ejector 5 is mixed with deoxygenation jet water pumped by the water pump I305, and mixed liquid flows back to the deoxygenation jet water tank 3 through the water return port 301; along with water injector 5 constantly works, the deoxidization jet water temperature in the deoxidization jet water tank 3 constantly risees, evacuation efficiency reduces, start water pump II 603, water pump II 603 is gone into the deoxidization jet water tank 3 with the low temperature demineralized water pump in the demineralized water tank 6, mix with the high temperature deoxidization jet water in the deoxidization jet water tank 3, thereby reduce the temperature of deoxidization jet water, and unnecessary water overflows through gap 304, flow back to in the demineralized water tank 6, adjust to water level balance, so circulation, thereby realize reducing the temperature of deoxidization jet water, keep the vacuum in the deoxidization jet water tank 2. Use the utility model discloses the system has saved the supplementary deoxidization of chemistry, is favorable to equipment maintenance, also avoids frequently changing water because of the deoxidization is penetrated the water temperature of water tank too high simultaneously.
Further, as shown in fig. 3, an air outlet ii 204 is arranged at the top of the deoxygenation water tank 2, and the air outlet ii 204 is connected with the air inlet of the water injector 5 through a pipeline, and a valve is arranged on the pipeline. An air outlet II 204 is arranged at the top of the oxygen removal water tank 2, so that the gas can be directly discharged from the air outlet II 204 to enter the water ejector 5.
Further, as shown in fig. 4 and 5, a heating jacket is arranged outside the deoxygenation water tank 2, a circulating water inlet 202 and a circulating water outlet 203 are arranged on the heating jacket, and hot water forms water circulation in the heating jacket to heat water in the deoxygenation water tank.
Further, as shown in fig. 6, two parallel pipelines are arranged between the water inlet of the water injector 5 and the oxygen-removing water-jetting water outlet 303, and each pipeline is provided with a water pump. The parallel pipeline arrangement can improve the circulation speed of oxygen removal and water injection and improve the working efficiency.
Further, as shown in fig. 7, a stirring paddle 7 is arranged in the deoxygenation water tank 2, the stirring paddle 7 is arranged at the top of the deoxygenation water tank 2, a stirring rod 701 of the stirring paddle 7 penetrates out of the shell of the deoxygenation water tank 2, and the stirring rod 701 is fixed on the shell of the deoxygenation water tank 1 through a sealing bearing 702. Set up stirring rake 7 on deoxidization water tank 1, at vacuum deoxidization in-process, stir the deoxidization water, improve gaseous escape velocity in aqueous, shorten the deoxidization time, and the deoxidization is more thorough, when the heating, improves heating efficiency simultaneously.
Further, as shown in fig. 8, a stirring paddle 7 is arranged in the deoxygenation water tank 2, the stirring paddle 7 is arranged at the side end of the deoxygenation water tank 2, a stirring rod 701 of the stirring paddle 7 penetrates out of the shell of the deoxygenation water tank 2, the stirring rod 701 is fixed on the shell of the deoxygenation water tank 1 through a sealing bearing 702, and the other end of the stirring rod 701 is fixed on the partition plate 4 through a bearing. With stirring rake 7 horizontal setting, during the stirring, it is bigger to the water scope of action in the deoxidization water tank 2, improves stirring efficiency.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. A boiler water supply deoxidization system is characterized by comprising a deaerator and a desalting water tank, wherein the deaerator is in an inverted T shape, the upper part of the deaerator is provided with a deaerating tower, the lower part of the deaerator is provided with a deaerating water tank and a deaerating water injection tank, the deaerating water tank and the deaerating water injection tank are separated by a partition plate, the deaerating tower is communicated with the deaerating water tank, and the lower part of the deaerating water tank is provided with a deaerating water outlet; the top of the deoxidizing tower is provided with an exhaust port I, the body of the deoxidizing tower is provided with a water inlet to be deoxidized, the top of the deoxidizing water jet box is provided with a water return port and a deoxidizing water jet water inlet, the bottom of the deoxidizing water jet box is provided with a deoxidizing water jet water outlet, the middle of the deoxidizing water jet box is provided with an overflow port, a water ejector is arranged above the deoxidizing water jet box, the water inlet of the water ejector is connected with the deoxidizing water jet water outlet through a pipeline, the pipeline is provided with a water pump I, the mixed liquid outlet of the water ejector is connected with the water return port of the deoxidizing water jet box, and the; be equipped with demineralized water inlet and demineralized water delivery port on the demineralized water tank, the demineralized water inlet passes through the overflow gap that pipeline and deoxidization jetted water on the case and links to each other, and the demineralized water delivery port passes through the pipeline and links to each other with deoxidization jetted water inlet, is equipped with water pump II on this pipeline, and the deoxidization jetted water case is gone into to demineralized water pump II in the demineralized water tank.
2. The boiler water supply deoxidization system according to claim 1, wherein a second exhaust port is arranged at the top of the deoxidization water tank, the second exhaust port is connected with the air inlet of the water injector through a pipeline, and a valve is arranged on the pipeline.
3. The boiler water supply deoxidization system of claim 1, wherein a heating jacket is arranged outside the deoxidization water tank, a circulating water inlet and a circulating water outlet are arranged on the heating jacket, and hot water forms water circulation in the heating jacket.
4. The boiler water supply deoxidization system according to claim 1, wherein two parallel pipelines are arranged between the water inlet of the water injector and the deoxidization water injection water outlet, and each pipeline is provided with a water pump.
5. The boiler feed water deoxidization system of claim 1, wherein a stirring paddle is arranged in the deoxidization water tank, a stirring rod of the stirring paddle penetrates out of the deoxidization water tank shell, and the stirring rod is fixed on the deoxidization water tank shell through a sealing bearing.
6. The boiler feed water deoxygenation system of claim 5, wherein the stirring paddle is arranged at the top of the deoxygenation water tank; or the stirring paddle is arranged at the side end of the deoxygenation water tank, and the other end of the stirring rod is fixed on the partition plate through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921858912.7U CN211060100U (en) | 2019-10-31 | 2019-10-31 | Boiler feed water deoxidization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921858912.7U CN211060100U (en) | 2019-10-31 | 2019-10-31 | Boiler feed water deoxidization system |
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| CN211060100U true CN211060100U (en) | 2020-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894939A (en) * | 2019-10-31 | 2020-03-20 | 航天长城节能环保科技有限公司 | A kind of boiler feed water deaeration system and method |
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2019
- 2019-10-31 CN CN201921858912.7U patent/CN211060100U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894939A (en) * | 2019-10-31 | 2020-03-20 | 航天长城节能环保科技有限公司 | A kind of boiler feed water deaeration system and method |
| CN110894939B (en) * | 2019-10-31 | 2025-02-18 | 航天长城节能环保科技有限公司 | A boiler feed water deoxygenation system and method |
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