CN212691728U - Deoxidization system of dry quenching boiler - Google Patents
Deoxidization system of dry quenching boiler Download PDFInfo
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- CN212691728U CN212691728U CN202021540166.XU CN202021540166U CN212691728U CN 212691728 U CN212691728 U CN 212691728U CN 202021540166 U CN202021540166 U CN 202021540166U CN 212691728 U CN212691728 U CN 212691728U
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Abstract
The embodiment of the utility model provides a dry quenching boiler deoxidization system, including steam turbine, condenser, demineralized water tank, heat pipe exchanger, deaerator, dry quenching boiler, the steam exhaust end of steam turbine is linked together with the steam inlet end of condenser, the water outlet end of condenser is linked together with the water inlet end of demineralized water tank; the water outlet end of the desalting water tank is communicated with the water inlet end of the heat pipe heat exchanger, the water outlet end of the heat pipe heat exchanger is communicated with the water inlet end of the deaerator, and the water outlet end of the deaerator is communicated with the water inlet end of the dry quenching boiler; the top of the demineralized water tank is provided with a floating roof, the floating roof is hermetically connected with the demineralized water tank, and the height of the lower surface of the floating roof in the demineralized water tank is consistent with the height of the water level in the demineralized water tank. Use the embodiment of the utility model provides a, be equipped with the top of floating with water tank sealing connection through the top at the demineralized water tank for the water storage of demineralized water tank is isolated with the atmosphere, prevents to get into the condensate water in the demineralized water tank and returns oxygen, improves the deoxidization effect of dry quenching boiler feedwater.
Description
Technical Field
The utility model relates to a dry coke quenching boiler deoxidization technical field especially relates to a dry coke quenching boiler deoxidization system.
Background
The oxygen removing system of the coke dry quenching boiler is used for removing oxygen in water of the coke dry quenching boiler before the water is supplied to the coke dry quenching boiler so as to prevent corrosion and heat transfer deterioration of thermal equipment and ensure safe and economic operation of the thermal equipment.
In the existing deoxygenation system of the dry quenching boiler, as shown in fig. 1, exhaust steam generated by a steam turbine 1 connected with the dry quenching boiler 10 is condensed into water by a condenser 3, then sent to a desalting water tank 5 by a condensate pump 4, then sent to a heat pipe heat exchanger 7 by a deoxygenation water-feeding pump 6, and then enters a deoxygenator 8 to be deoxygenated after heat exchange of the heat pipe heat exchanger 7, so that boiler water is supplemented for the dry quenching boiler 10 by a boiler water-feeding pump 9. The condenser 3 is a heat exchanger for condensing the exhaust gas of the steam turbine 1 into water, the condenser 3 has the function of vacuum oxygen removal in addition to the function of condensing the exhaust gas, and the condenser is characterized in that: the partial pressure of air in the gas phase is in direct proportion to the concentration of the air in the liquid phase, namely, the concentration of the air in water is far less than that of the air in steam, when the steam is balanced and condensed, the air is resolved out, and the resolved air is continuously pumped away to maintain the concentration of the air on the condensed water surface, so that the air dissolving amount in the condensed water is stabilized. Like this, after carrying out the deoxidization to the condensate water through condenser 3, the air quantity in the condensate water has reduced a lot for in the gaseous phase, and the condensate water gets into deoxidization 8 once more to the mesh of deoxidization has been reached.
However, in the existing deoxidation system of the dry quenching boiler, after the condensed water of partial deoxidation is discharged from the condenser 3, the condensed water enters the desalting water tank 5 through the condensed water pump 4, because the top of the existing desalting water tank 5 is provided with the exhaust port 11, namely, the desalting water tank 5 is communicated with the atmosphere, the condensed water can be caused to return oxygen again in the desalting water tank 5, and the condensed water of the returned oxygen enters the deaerator 8, which can affect the deoxidation effect of the deaerator 8.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a dry coke quenching boiler deoxidization system to improve the deoxidization effect of dry coke quenching boiler feedwater. The specific technical scheme is as follows:
the utility model provides a deoxidizing system of a coke dry quenching boiler, which comprises a steam turbine, a condenser, a demineralized water tank, a heat pipe exchanger, a deaerator and a coke dry quenching boiler,
the steam exhaust end of the steam turbine is communicated with the steam inlet end of the condenser, and the water outlet end of the condenser is communicated with the water inlet end of the desalting water tank;
the water outlet end of the desalting water tank is communicated with the water inlet end of the heat pipe heat exchanger, the water outlet end of the heat pipe heat exchanger is communicated with the water inlet end of the deaerator, and the water outlet end of the deaerator is communicated with the water inlet end of the dry quenching boiler;
the top of the demineralized water tank is provided with a floating roof, the floating roof is hermetically connected with the demineralized water tank, and the height of the lower surface of the floating roof in the demineralized water tank is consistent with the height of the water level in the demineralized water tank.
The utility model discloses an among some embodiments, one side outside the box of demineralized water tank is equipped with the liquid level control alarm, works as when the floating roof rises to predetermineeing the water level, the liquid level control alarm sends alarm information.
In some embodiments of the present invention, a rubber plate is connected between the floating roof and the wall of the demineralized water tank.
In some embodiments of the present invention, a boiler feed pump is disposed on the water supply line between the water outlet end of the deaerator and the water inlet end of the dry quenching boiler.
In some embodiments of the present invention, the dry quenching boiler deoxygenation system further comprises a generator; the generator is connected with the turbine.
The utility model discloses an in some embodiments, the delivery port end of condenser with be provided with condensate pump on the water supply line between the water inlet end of demineralized water tank.
In some embodiments of the present invention, a deoxidizing water-feeding pump is disposed on the water-feeding pipe between the water outlet end of the demineralized water tank and the water inlet end of the heat pipe exchanger.
The embodiment of the utility model provides a pair of dry quenching boiler deoxidization system is equipped with the top of floating with water tank sealing connection through the top at the demineralized water tank to the lower surface that floats the top is in height in the demineralized water tank and the water level highly uniform in the demineralized water tank, like this, make the water storage of demineralized water tank and atmosphere isolated, prevent to get into the condensate water in the demineralized water tank and return oxygen, thereby improve the deoxidization effect of dry quenching boiler feedwater. Of course, it is not necessary for any product or method of the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the architecture of a prior art dry quenching boiler deoxygenation system;
FIG. 2 is a schematic structural diagram of a dry quenching boiler deoxygenation system provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a demineralized water tank in a deoxygenation system of a coke dry quenching boiler according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a dry quenching boiler deoxidization system, as shown in figure 2, including steam turbine 1, condenser 3, demineralized water tank 5, heat pipe exchanger 7, oxygen-eliminating device 8, dry quenching boiler 10.
Wherein, the exhaust end of the steam turbine 1 is communicated with the steam inlet end of the condenser 3, and the water outlet end of the condenser 3 is communicated with the water inlet end of the desalted water tank 5;
the water outlet end of the desalted water tank 5 is communicated with the water inlet end of the heat pipe heat exchanger 7, the water outlet end of the heat pipe heat exchanger 7 is communicated with the water inlet end of the deaerator 8, and the water outlet end of the deaerator 8 is communicated with the water inlet end of the dry quenching boiler 10;
the top of the demineralized water tank 5 is provided with a floating roof 13, the floating roof 13 is hermetically connected with the demineralized water tank 5, and the height of the lower surface of the floating roof 13 in the demineralized water tank 5 is consistent with the height of the water level in the demineralized water tank 5.
Specifically, the coke dry quenching boiler 10 is used for reducing the temperature of the inert circulating gas in the coke dry quenching system, absorbing the heat of the inert circulating gas, and generating steam for heat supply and power generation, so as to achieve the purposes of effectively utilizing the heat of the inert circulating gas and saving energy; a rotary prime mover in which the steam turbine 1 converts the thermal energy of the steam into mechanical energy; the condenser 3 is used for receiving the exhaust steam of the steam turbine 1 and condensing the exhaust steam into water; the demineralized water tank 5 is used for storing condensed water input from the condenser 3; the heat pipe heat exchanger 7 is used for realizing heat exchange by utilizing a heat pipe principle; the deaerator 8 is used for removing oxygen and other non-condensable gases in boiler feed water, preventing the thermal equipment from being corroded and deteriorated in heat transfer, and ensuring the safe and economic operation of the thermal equipment.
Wherein, the demineralized water tank 5 top is equipped with floats top 13 promptly, floats between top 13 and the demineralized water tank 5 sealing connection, makes the water storage isolated with the atmosphere, prevents that the oxygen-removed water from the atmosphere back to oxygen. And when the demineralized water tank 5 is filled with water, the pressure in the tank can not be increased, and when the demineralized water tank is drained, the tank can not be pumped out, so that the normal pressure state is always kept.
Specifically, the floating roof 13 and the demineralized water tank 5 can be hermetically connected through wheel rubber, elastic materials and the like, for example, the elastic material seal mainly comprises a rubber belt, a soft foam plastic block, a supporting piece, a supporting plate, a fastening piece and the like, and the soft foam plastic block wrapped by the rubber belt is filled between the floating roof 13 and the tank wall of the demineralized water tank 5 to form a seal.
Specifically, the demineralized water tank 5 and the floating roof 13 can adopt a normal-pressure closed floating roof water tank, and the working principle of the normal-pressure closed floating roof water tank is as follows: in a liquid storage device, in order to prevent and reduce the exchange of two-phase substances at a gas-liquid two-phase interface and prevent the volatilization loss of liquid, a floating roof device is often arranged in the storage device to float on the surface of the liquid so as to isolate the gas-liquid two-phase medium, thereby achieving the purpose of preventing and reducing the exchange of the two-phase medium. Under normal pressure, the normal pressure closed floating roof water tank is water outlet equipment for separating water from air, and can prevent water from being polluted, oxidized and evaporated.
Therefore, the embodiment of the utility model provides a dry quenching boiler deoxidization system is equipped with the top of floating with water tank sealing connection through the top at the demineralized water tank to the lower surface that floats the top is in height in the demineralized water tank and the water level highly uniform in the demineralized water tank, like this, make the water storage of demineralized water tank and atmosphere isolated, prevent that the condensate water that gets into in the demineralized water tank from returning oxygen, thereby improve the deoxidization effect of dry quenching boiler feedwater, make the dry quenching boiler operation stable, the economic nature is outstanding.
As an embodiment of the utility model, one side outside the box of demineralized water tank 5 is equipped with liquid level control alarm 12, when floating roof 13 rises to predetermineeing the water level, liquid level control alarm 12 sends alarm information.
Specifically, as shown in fig. 3, one side outside the box of demineralized water tank 5 is equipped with liquid level control alarm 12, this liquid level control alarm 12 is connected through the liquid level detector 15 with in the demineralized water tank 5, detect the water level height in the demineralized water tank 5 through the liquid level detector, when the water level in the demineralized water tank 5 reaches and predetermines high water level, liquid level control alarm 12 carries out audible and visual alarm, when the water level in the demineralized water tank 5 reaches and predetermines low water level, audible and visual alarm is also carried out to liquid level control alarm 12, remind the water storage in the user's water tank too high or low excessively. Here, the preset high water level and the preset low water level may be set according to actual circumstances.
In addition, when condensed water enters the demineralized water tank 5, a floating roof 13 in the demineralized water tank 5 rises along with the water level, a liquid level detector 15 adopted by the demineralized water tank 5 can output a 4-20 mA signal, and when the liquid level is low, a liquid level control alarm 12 sends an alarm signal, opens a water replenishing pipeline adjusting valve at the water inlet of the demineralized water tank 5 and replenishes the demineralized water; when the liquid level is high, the liquid level control alarm 12 sends out an alarm signal, and a water pump at a water outlet of the desalting water tank 5 starts water drainage so as to ensure that the whole coke dry quenching boiler system can normally run.
As an embodiment of the present invention, a rubber plate 14 is connected between the floating roof 13 and the wall of the demineralized water tank 5.
Specifically, as shown in fig. 3, a rubber plate 14 is connected between the floating roof 13 and the inner wall of the demineralized water tank 5, because the rubber plate 14 not only has a good sealing effect, but also has the functions of corrosion resistance, wear resistance, impact resistance, and protection of equipment and devices used by the rubber plate. When the floating roof 13 is lifted or lowered due to the increase or decrease of the amount of water in the demineralized water tank 5, the stored water in the demineralized water tank 5 can be isolated from the atmosphere, and the condensed water entering the demineralized water tank 5 can be prevented from being returned to the atmosphere.
As an implementation mode of the utility model, a boiler water-feeding pump 9 is arranged on a water-feeding pipeline between the water outlet end of the deaerator 8 and the water inlet end of the dry quenching boiler 10.
Specifically, the boiler feed pump 9 is used for conveying feed water with a certain temperature in the water tank of the deaerator 8 to the coke dry quenching boiler 10, and the boiler feed pump 9 is arranged between the water outlet end of the deaerator 8 and the water inlet end of the coke dry quenching boiler 10, so that required water can be timely provided for the coke dry quenching boiler 10.
The embodiment of the utility model provides an in, when the water level in the demineralized water tank 5 reaches and predetermines the lower limit, the deoxidization feed pump 9 out of service, when the water level in the demineralized water tank 5 resumes to predetermineeing the water level, can move deoxidization feed pump 9 once more. Wherein the operation and stop of the oxygen-removing water-feeding pump 9 are controlled by an interlock signal in the control in the dry quenching.
As an embodiment of the utility model, the utility model also comprises a generator 2; the generator 2 is connected to the turbine 1.
Specifically, steam generated by the coke dry quenching boiler 10 is introduced to the steam turbine 1 through a pipeline to drive the steam turbine 1, and some steam is extracted from a proper pressure part in the middle of the steam turbine 1 to provide a heat source for surrounding heat supply users, the steam turbine 1 rotates to drag the generator, and the generator can generate electric power after being driven. Therefore, the steam turbine 1 is connected with the generator 2, and the steam generated by the coke dry quenching boiler 10 can be used for generating power, so that the purposes of effectively utilizing the heat of the inert circulating gas and saving energy are achieved.
As an embodiment of the utility model, the water supply pipe between the water outlet end of the condenser 3 and the water inlet end of the demineralized water tank 5 is provided with the condensate pump 4.
Specifically, the condensate pump 4 is used for conveying condensate in the condenser 3, so that the condensate is pressurized and then conveyed to the desalted water tank 5, and the efficiency of the dry quenching deoxidizing system is improved.
As an embodiment of the present invention, a deoxidizing water-feeding pump 6 is disposed on the water-feeding pipe between the water outlet end of the demineralized water tank 5 and the water inlet end of the heat pipe exchanger 7.
Specifically, the deaerated feed pump 6 is used to pressurize and feed deaerated water in the deaerated water tank 5 to the heat pipe heat exchanger 7.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A deoxidation system of a dry quenching boiler comprises a steam turbine (1), a condenser (3), a demineralized water tank (5), a heat pipe heat exchanger (7), a deaerator (8) and the dry quenching boiler (10), and is characterized in that,
the steam exhaust end of the steam turbine (1) is communicated with the steam inlet end of the condenser (3), and the water outlet end of the condenser (3) is communicated with the water inlet end of the desalted water tank (5);
the water outlet end of the desalted water tank (5) is communicated with the water inlet end of the heat pipe heat exchanger (7), the water outlet end of the heat pipe heat exchanger (7) is communicated with the water inlet end of the deaerator (8), and the water outlet end of the deaerator (8) is communicated with the water inlet end of the dry quenching boiler (10);
the top of the demineralized water tank (5) is provided with a floating roof (13), the floating roof (13) is connected with the demineralized water tank (5) in a sealing manner, and the lower surface of the floating roof (13) is in accordance with the height of the water level in the demineralized water tank (5) and the height of the water level in the demineralized water tank (5).
2. The dry quenching boiler deoxygenation system of claim 1, characterized in that a liquid level control alarm (12) is provided at a side of the demineralized water tank (5) outside the tank body, and when the floating roof (13) rises to a preset water level, the liquid level control alarm (12) gives an alarm.
3. The dry quenching boiler deoxygenation system of claim 1, characterized in that a rubber sheet (14) is connected between the floating roof (13) and the wall of the demineralized water tank (5).
4. The dry quenching boiler deoxygenation system of claim 1, characterized in that a boiler feed pump (9) is arranged on a feed water pipe between the water outlet end of the deoxygenator (8) and the water inlet end of the dry quenching boiler (10).
5. The dry quenching boiler oxygen removal system of claim 1, further comprising a generator (2); the generator (2) is connected with the steam turbine (1).
6. The deoxygenation system of a coke dry quenching boiler according to claim 1, characterized in that a condensate pump (4) is arranged on a water supply pipe between the water outlet end of the condenser (3) and the water inlet end of the demineralized water tank (5).
7. The dry quenching boiler deoxygenation system of claim 1, characterized in that a deoxygenation water feed pump (6) is arranged on a water feed pipe between the water outlet end of the demineralized water tank (5) and the water inlet end of the heat pipe exchanger (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021540166.XU CN212691728U (en) | 2020-07-30 | 2020-07-30 | Deoxidization system of dry quenching boiler |
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| CN202021540166.XU CN212691728U (en) | 2020-07-30 | 2020-07-30 | Deoxidization system of dry quenching boiler |
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| CN212691728U true CN212691728U (en) | 2021-03-12 |
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| CN202021540166.XU Active CN212691728U (en) | 2020-07-30 | 2020-07-30 | Deoxidization system of dry quenching boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461221A (en) * | 2021-07-28 | 2021-10-01 | 丰城市天壕新能源有限公司 | Intelligent dosing system for dry quenching waste heat power generation |
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2020
- 2020-07-30 CN CN202021540166.XU patent/CN212691728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461221A (en) * | 2021-07-28 | 2021-10-01 | 丰城市天壕新能源有限公司 | Intelligent dosing system for dry quenching waste heat power generation |
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