CN209688808U - A kind of oxygen-eliminating device dead steam recovery system - Google Patents
A kind of oxygen-eliminating device dead steam recovery system Download PDFInfo
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- CN209688808U CN209688808U CN201920207207.4U CN201920207207U CN209688808U CN 209688808 U CN209688808 U CN 209688808U CN 201920207207 U CN201920207207 U CN 201920207207U CN 209688808 U CN209688808 U CN 209688808U
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Abstract
The utility model discloses a kind of oxygen-eliminating device dead steam recovery systems, including oxygen-eliminating device and steam exhaust recovering device；The steam exhaust recovering device is made of the heat exchanger and condensate tank being connected to up and down；Steam drain is connected by steam drain pipeline with the air intake at the top of heat exchanger at the top of the oxygen-eliminating device；The condensate tank bottom is equipped with drain, and side wall is equipped with condensation-water drain and fixed gas exports；Fixed gas outlet is connected by pipeline with the electric-powered air release valve being arranged on oxygen-eliminating device outside steam drain.The present apparatus can recycle the heat and condensed water of steam discharge loss, reach energy conservation, consumption reduction, emission reduction, improve power plant's economical operation benefit.By the high-performance heat exchanger and condensate tank being made of one apparatus structure of special construction, compact-sized, scene takes up little area steam exhaust recovering device, convenient for installation and maintenance.Recyclable device uses high-performance heat exchanger, can reduce condensate return temperature to greatest extent, and heat recovery efficiency is high, and can recycle condensed water to greatest extent, and separates the non-condensing steam of discharge.
Description
Technical field
The utility model relates to energy-saving environmental protection device technical fields, more particularly, to a kind of oxygen-eliminating device dead steam recovery system.
Background technique
Dissolved oxygen in boiler water feeding is the main reason for power plant's heat power equipment generates corrosion, it will cause heat power equipment
Booster and leakage accident.Therefore, in order to control the oxygen content in boiler feedwater, prevent heat power equipment from corroding, it is necessary to deoxygenation.
The common deoxidation method of power plant is thermal de-aeration, and the principle of deoxygenation is to dissolve theorem (Henry Theorem) according to steam,
The solubility of any steam in water is directly proportional to partial pressure of the steam in vapour, water interface.If water heated,
With the raising of coolant-temperature gage, the partial pressure of water vapour just be will increase on vapour, water interface, and the partial pressure of other steams will drop
Low, the solubility of corresponding other steams in water will just reduce, and can constantly be precipitated.When water is heated to saturation temperature,
Pressure is all the saturation pressure of water vapour on vapour, water interface, and the partial pressure of other steams is close to zero, and corresponding steam is in water
In degree of hydrolysis also close to zero, the various steams that water did not just dissolve originally in the ability with dissolution steam, water will be whole
It is precipitated.Here it is principles based on thermal de-aeration method.
Therefore it when carrying out thermal de-aeration, needs that water supply is heated to saturation state using steam, thus molten in water of going out
Oxygen and other non-condensing steams.Except the steam come out needs that oxygen-eliminating device is discharged, some vapor will necessarily be taken away, to lose heat
And water.Under normal conditions, the steam flow of deoxygenation steam discharge loss is 3 ‰ or more of oxygen-eliminating device power output.By taking 600MW unit as an example,
Contribute 1900t/h, and it is 5.7/h that steam discharge, which loses quantity of steam, and year hours of operation is calculated by 5500, and loss water is 31350t/,
Heat 74625GJ/ is lost, this loss is huge.The effect of the utility model be exactly recycle steam discharge loss heat and
Condensed water can sufficiently recycle these losses using the utility model, and Nian Jieyue water is 31350t, saves heat and is converted into mark
Coal, Nian Jieyue coal consumption 2830t reduce CO2 emission 7355t, year reduction sulfur dioxide (SO2) emissions 25t, year coal consumption year because saving
Reduce discharged nitrous oxides 21t.This is great to the meaning of energy conservation, emission reduction, environmental protection and raising power plant's economical operation benefit.
Utility model content
In order to overcome above-mentioned existing technological deficiency, oxygen-eliminating device top is utilized the purpose of this utility model is to provide a kind of
The steam exhaust of portion's steam drain discharge heats the demineralized water supplement into oxygen-eliminating device by special steam exhaust recovering device as heat source
Water enters oxygen-eliminating device after promoting its temperature, to recycle the heat that steam exhaust is taken away, reduces oxygen-eliminating device steam consumption, reaches recycling
Deaerator exhaust heat loss simultaneously recycles the dual-purpose dead steam recovery system of condensed water.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
The technical program is a kind of oxygen-eliminating device dead steam recovery system, including oxygen-eliminating device and steam exhaust recovering device；The steam exhaust
Recyclable device is made of the heat exchanger and condensate tank being connected to up and down；At the top of the oxygen-eliminating device steam drain by steam drain pipeline with
Air intake at the top of heat exchanger is connected；The condensate tank bottom is equipped with drain, and side wall is equipped with condensation-water drain and not
Solidifying gas outlet；Fixed gas outlet is connected by pipeline with the electric-powered air release valve being arranged on oxygen-eliminating device outside steam drain.
As optimization, hot feedwater outlet is equipped at the top of the heat exchanger, side wall is equipped with cooling water inlet；External complement water is logical
It is direct with cooling water inlet to cross threeway, is connected by hot feedwater outlet with water inlet on oxygen-eliminating device or external complement water passes through threeway
Directly it is connected with water inlet.The external feed line after heating is provided for oxygen-eliminating device, improves the steam exhaust heat exchange rate of oxygen-eliminating device.
As optimization, the condensate tank is equipped with liquidometer, and liquidometer lower part is equipped with sewage draining exit；The condensation-water drain
It is externally provided with condensation water regulating valve, condensation water regulating valve is connected by pipeline with condenser；The aperture of the condensation water regulating valve
Signal control is controlled by the teletransmission that liquidometer is fed back.Condensed water output flow is automatically adjusted, condensate tank liquid level is controlled.
Compared with prior art, the utility model has the beneficial effects that the present apparatus can recycle the heat and cold of steam discharge loss
Condensate reaches energy conservation, consumption reduction, emission reduction, improves power plant's economical operation benefit.Steam exhaust recovering device by special construction high efficient heat exchanging
Device and condensate tank being made of one apparatus structure, compact-sized, scene takes up little area, convenient for installation and maintenance, may be mounted at and removes
On oxygen device platform, by oxygen-eliminating device, system pipeline is facilitated to connect.By condensation-water drain, condensed water is recycled, the dimension in condensate tank
The pressure held does not need pump conveying yet, saves the investment of pump, and operational process is also not required to consumption additional energy.Recyclable device uses
High-performance heat exchanger can reduce condensate return temperature to greatest extent, and heat recovery efficiency is high, and can recycle condensed water to greatest extent,
And separate the non-condensing steam of discharge.This is applicable in the operational process of novel system to automatically control, and normal course of operation is not required to very important person
Member intervenes.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Fig. 1 is the main structure schematic diagram of the utility model.
Fig. 2 is the process flow chart of the utility model.
Marked in the figure: oxygen-eliminating device 1, heat exchanger 2, condensate tank 3, steam drain 4, air intake 5, drain 6, condensation-water drain
7, fixed gas outlet 8, electric-powered air release valve 9, hot feedwater outlet 10, cooling water inlet 11, supplement water 12, water inlet 13, liquidometer 14,
Sewage draining exit 15 condenses water regulating valve 16.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment 1, as shown in fig. 1, the utility model are a kind of oxygen-eliminating device dead steam recovery system, it is characterised in that: packet
Include oxygen-eliminating device 1 and steam exhaust recovering device；The steam exhaust recovering device is made of the heat exchanger 2 and condensate tank 3 being connected to up and down；Institute
It states 1 top steam drain 4 of oxygen-eliminating device and is connected by steam drain pipeline with the air intake 5 at 2 top of heat exchanger；The condensate tank 3
Bottom is equipped with drain 6, and side wall is equipped with condensation-water drain 7 and fixed gas outlet 8；Fixed gas outlet 8 passes through pipeline and setting
Electric-powered air release valve 9 on oxygen-eliminating device outside steam drain 4 is connected.
This steam exhaust recovering device is mountable to be arranged in except on oxygen layer platform.Because apparatus structure is compact, occupancy fabricating yard is small,
The mountable position close to oxygen-eliminating device, facilitates system pipeline to connect.Its process flow are as follows: oxygen-eliminating device 1 passes through 4 row of steam drain
Vapour enters heat exchanger from 2 top air intake 5 of heat exchanger, condensate tank 3 is entered after condensing, steaming is isolated in condensate tank 3
The on-condensible gases such as oxygen, the carbon dioxide carried secretly in vapour, and atmosphere is emitted into electric-powered air release valve 9 through fixed gas outlet 8.Electricity
Dynamic exhaust valve 9 can carry out DCS control by pressure sensor signal to the Central Control Room being arranged on condensate tank 3.Pressure in technique
Control: using the pressure sensor signal on condensate tank 3 as control signal, the aperture of electronic exhaust steam valve 9 is automatically controlled, is tieed up
Holding has certain pressure in condensate tank 3, so that the condensed water recycled in condensate tank is extruded from condensation-water drain 7, and gram
It takes pipeline and hinders smooth delivery of power to condenser.On discharge pipe line, drain 6 accesses nearest drainage pipeline networks.
The present apparatus can recycle the heat and condensed water of steam discharge loss, reach energy conservation, consumption reduction, emission reduction, improve power plant's operation warp
Ji benefit.Steam exhaust recovering device is tight by the high-performance heat exchanger and condensate tank being made of one apparatus structure, structure of special construction
It gathers, scene takes up little area, and it is convenient for installation and maintenance, it may be mounted on Deaerator Table, by oxygen-eliminating device, system pipeline facilitated to connect.
By condensation-water drain, condensed water is recycled, the pressure maintained in condensate tank does not need pump conveying yet, saves the investment of pump,
Operational process is also not required to consumption additional energy.Recyclable device uses high-performance heat exchanger, can reduce to greatest extent and be condensed back to water temperature
Degree, heat recovery efficiency is high, and can recycle condensed water to greatest extent, and separates the non-condensing steam of discharge.It is essentially all to run
Power plant and the subsequent recycling not accounted in the power plant that founds a capital to deoxygenation steam discharge.This operational process for being applicable in novel system is automatic control
System, normal course of operation do not need personnel's intervention.
Embodiment 2, optimizes on the basis of embodiment 1, as shown in Figure 2, is equipped at the top of the heat exchanger 2
Hot feedwater outlet 10, side wall are equipped with cooling water inlet 11；External complement water 12 is direct by threeway and cooling water inlet 11, passes through heat
Feedwater outlet 10 is connected with water inlet 13 on oxygen-eliminating device or external complement water 12 is directly connected with water inlet 13 by threeway.
Deaerator feedwater pipeline: external complement water 12 separates two-way through threeway, connects cooling water inlet 11 through valve all the way and enters
Heat exchanger 2, then go out from hot feedwater outlet 10, enter oxygen-eliminating device through water inlet 13；External complement water 12, another way is through threeway and valve
It is directly accessed oxygen-eliminating device water inlet 13 behind the door.Crushing of the makeup water stream through steam exhaust recovering device is small (≤20KPa), it is not necessary to which pump is again
Boost laggard oxygen-eliminating device 1.
Embodiment 3, optimizes on the basis of embodiment 1, and the condensate tank 3 is equipped with liquidometer 14, liquid
Position 14 lower parts of meter are equipped with sewage draining exit 15；The condensation-water drain 6 is externally provided with condensation water regulating valve 16, and condensation water regulating valve 16 passes through
Pipeline is connected with condenser；The aperture of the condensation water regulating valve 16 controls signal control by the teletransmission that liquidometer 14 is fed back
System.
Water level control: using 14 remote transfer signal of liquidometer on condensate tank 3 as control signal, condensed water is automatically controlled
The aperture of regulating valve 16 adjusts the condensing water flow of discharge condensate tank 3, maintains have certain water level in condensate tank 3, avoids
Water tank full water loses through 8 discharge of fixed gas outlet, also avoids water level too low, condensate water discharging band vapour, and oxidation corrosion condensed water is defeated
Send pipeline.
Equipped with condensation water regulating valve 16 in the cold condensate outlet 6 of condensate tank 3, water regulating valve 16 is condensed by liquidometer 14
Remote transfer signal to Central Control Room is provided and carries out DCS control；Pass through the remote liquid level signal control condensation water regulating valve 16 of liquidometer 14
Aperture controls 3 liquid level of condensate tank to automatically adjust condensed water output flow.Condensed water outlet pipeline is returned from steam exhaust
The condensation-water drain 7 of receiving apparatus takes over road and leads to condenser after condensing water regulating valve 16.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (3)
1. a kind of oxygen-eliminating device dead steam recovery system, it is characterised in that: including oxygen-eliminating device (1) and steam exhaust recovering device；The steam exhaust
Recyclable device is made of the heat exchanger (2) and condensate tank (3) being connected to up and down；Steam drain (4) passes through at the top of the oxygen-eliminating device (1)
Steam drain pipeline is connected with the air intake (5) at the top of heat exchanger (2)；Condensate tank (3) bottom is equipped with drain (6),
Side wall is equipped with condensation-water drain (7) and fixed gas outlet (8)；Fixed gas exports (8) by pipeline and is arranged on oxygen-eliminating device
The electric-powered air release valve (9) of steam drain (4) outside is connected.
2. a kind of oxygen-eliminating device dead steam recovery system according to claim 1, it is characterised in that: at the top of the heat exchanger (2)
Equipped with hot feedwater outlet (10), side wall is equipped with cooling water inlet (11)；External complement water (12) passes through threeway and cooling water inlet
(11) directly, it is connected by hot feedwater outlet (10) with water inlet on oxygen-eliminating device (13) or external complement water (12) passes through threeway
Directly it is connected with water inlet (13).
3. a kind of oxygen-eliminating device dead steam recovery system according to claim 1, it is characterised in that: on the condensate tank (3)
Equipped with liquidometer (14), liquidometer (14) lower part is equipped with sewage draining exit (15)；The condensation-water drain (7) is externally provided with condensed water adjusting
Valve (16), condensation water regulating valve (16) are connected by pipeline with condenser；The aperture of condensation water regulating valve (16) passes through
The teletransmission control signal control of liquidometer (14) feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207207.4U CN209688808U (en) | 2019-02-19 | 2019-02-19 | A kind of oxygen-eliminating device dead steam recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207207.4U CN209688808U (en) | 2019-02-19 | 2019-02-19 | A kind of oxygen-eliminating device dead steam recovery system |
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| Publication Number | Publication Date |
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| CN209688808U true CN209688808U (en) | 2019-11-26 |
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| CN201920207207.4U Active CN209688808U (en) | 2019-02-19 | 2019-02-19 | A kind of oxygen-eliminating device dead steam recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132983A (en) * | 2021-11-15 | 2022-03-04 | 山东钢铁集团日照有限公司 | Oxygen removing device capable of providing high-temperature condensed water |
-
2019
- 2019-02-19 CN CN201920207207.4U patent/CN209688808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132983A (en) * | 2021-11-15 | 2022-03-04 | 山东钢铁集团日照有限公司 | Oxygen removing device capable of providing high-temperature condensed water |
| CN114132983B (en) * | 2021-11-15 | 2023-10-31 | 山东钢铁集团日照有限公司 | Deoxidizing device capable of providing high-temperature condensed water |
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