CN104520643B - The minimizing technology of the ferrous components in water discharged by the heater of generating equipment - Google Patents
The minimizing technology of the ferrous components in water discharged by the heater of generating equipment Download PDFInfo
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- CN104520643B CN104520643B CN201280075201.7A CN201280075201A CN104520643B CN 104520643 B CN104520643 B CN 104520643B CN 201280075201 A CN201280075201 A CN 201280075201A CN 104520643 B CN104520643 B CN 104520643B
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- water
- heater
- discharge
- discharged
- defecator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Removal Of Specific Substances (AREA)
- Filtration Of Liquid (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention provides the heater of a kind of generating equipment to discharge the minimizing technology of the ferrous components in water, and the method can make the concentration of iron in feedwater that supplies to boiler conveying be down to below reference value.In the case of iron concentration in water (117) discharged by the heater discharged from heater discharge casing (116) is higher than setting, make described heater discharge water (117) to discharge outside system, iron concentration in water (117) discharged by the described heater discharged from described heater discharge casing (116) be below setting in the case of, make described heater discharge water (117) to supply to defecator (15), or, not in the case of the stipulated time set in advance, make described heater discharge water (117) to discharge outside system, in the case of have passed through the stipulated time set in advance, make described heater discharge water (117) to supply to described defecator (15).
Description
Technical field
The minimizing technology of the ferrous components in water discharged by the heater that the present invention relates to a kind of generating equipment, in the method,
The ferrous components discharged in water from the heater for feed-water heater conveying is filtered, makes described heater discharge water and reach to begin
The water quality that can reclaim to feed pipe eventually.
Background technology
All the time, in steam power plant, being supplied to turbine by the steam of the high temp/high pressure produced, utilizing should
Steam drives turbine to generate electricity.The steam after turbine is driven to be cooled down by condenser and return to the state of water, afterwards
Again it is heated and supplies and reuse to boiler.
But, supply in feedwater supply to boiler, containing the impurity using ferrum oxide as main body, this impurity gradually adheres to
At the heat pipe inner surface of boiler, sometimes make the differential pressure of boiler increase because of this attachment, and then there is also and cause boiler, join
The damaged misgivings of pipe etc..Therefore, by arranging deironing filter and make a return journey in the stream for water supply point flowing of water system
Divided by ferrum oxide as the impurity (patent documentation 1) of main body.
Although it addition, proposing the various filters such as filter vat, macaroni yarn, the electromagnetic filter removal side as ferrous components
Method, but owing to the particle of iron oxides is the most small, therefore, Impurity removal unstable properties based on these filters, it is impossible to
Practice (patent documentation 2).
Additionally, JIS standard defines boiler inlet for feedwater in concentration of iron be 5 μ g/l (ppb) below, be preferably
2 μ g/l (ppb) (non-patent literature 1) below.
Citation
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2001-17983 publication
Patent documentation 2: Japanese Unexamined Patent Publication 11-57416 publication
Non-patent literature
Non-patent literature 1:JIS B 8223 (water supply of boiler and the water quality of boiler water), issues a magazine on October 20th, 2006
The problem that invention is to be solved
But, the heater containing a large amount of ferrous components etc. more than reference value is discharged water and must be discharged to outside system, it is impossible to
It is back to water system recycle.Therefore, in order to again need to boiler water supply to be about 60～80% with generated output
Operating, result is to exist need substantial amounts of water (pure water) and make the generated output of turbine equipment rise to 100% needs
Three days such problems.
In addition, it is necessary to the sewage treatment equipment that a large amount of waste water being discharged to outside system are processed and manufacture substantial amounts of
The pure water manufacturing equipment of water (pure water), there is also the surging such problem of installation cost.
Summary of the invention
The present invention completes to solve above-mentioned problem, its object is to provide the heater of a kind of generating equipment to arrange
The minimizing technology of the ferrous components in water outlet, the method can make to boiler conveying for feedwater in concentration of iron be down to reference value with
Under.
Solution
The present invention is to solve that described problem uses following methods.
The 1st aspect of the present invention relates to the minimizing technology of the ferrous components in the heater discharge water of a kind of generating equipment, should
Generating equipment has: boiler, and it produces steam by carrying out the heat of self-heat power；Steam turbine, it is by the steam of described boiler
And be operated；Condenser, it makes the aerofluxus from described steam turbine condense；Water system, it will coagulate at described condenser
Condensed water after knot is as feedwater supply extremely described boiler side；For feed-water heater, it is arranged at the confession of described water system
On water pipe, extract a part for aerofluxus carry from described steam turbine described for feeding water with its heating to after-heater；
Heater discharge casing, its storage discharges water from the described heater discharged for feed-water heater；And defecator, it filters institute
State heater and discharge the iron particle in water, and, this generating equipment is injected oxygen to described confession and carries out oxidation processes in feedwater, its
In, the situation that iron concentration in water discharged by the described heater discharged from described heater discharge casing is higher than setting
Under, make described heater discharge water and discharge outside system, discharge water at the described heater discharged from described heater discharge casing
In iron concentration be below setting in the case of, make described heater discharge water supply to described defecator, or,
Not in the case of the stipulated time set in advance, make described heater discharge water and discharge outside system, have passed through
In the case of stipulated time set in advance, make described heater discharge water and supply to described defecator.
It addition, the 2nd aspect of the present invention relates to a kind of generating equipment, having: boiler, it is by carrying out the heat of self-heat power
Produce steam；Steam turbine, it is operated by the steam of described boiler；Condenser, it makes from described steam turbine
Aerofluxus condensation；Water system, the condensed water after described condenser condenses is supplied to described boiler side by it as feedwater；
For feed-water heater, it is arranged on the feed pipe of described water system, extracts defeated to after-heater from described steam turbine
The part of the aerofluxus sent is the most described for feedwater with its heating；Heater discharge casing, its storage is arranged for feed-water heater from described
Water discharged by the heater gone out；And defecator, the iron particle in its filtration described heater discharge water, and, this generating sets
Feedwater is injected oxygen for described confession and carries out oxidation processes, wherein, in the described heating discharged from described heater discharge casing
Device discharge the iron concentration in water higher than setting in the case of, make described heater discharge water and discharge outside system, from
In the case of iron concentration in the described heater discharge water that described heater discharge casing is discharged is below setting, make institute
State heater discharge water to supply to described defecator, or, not in the case of the stipulated time set in advance, make
Described heater is discharged water and is discharged outside system, in the case of have passed through the stipulated time set in advance, makes described heater
Discharge water to supply to described defecator.
The minimizing technology of the ferrous components in water and described discharged by the heater of the generating equipment according to described first method
The generating equipment of second method, the iron concentration in water discharged by the heater discharged from heater discharge casing is higher than setting
In the case of, make heater discharge water and discharge outside system, the ferrum in water discharged by the heater discharged from heater discharge casing
In the case of ion concentration is below setting, makes heater discharge water and supply to defecator, or, not through in advance
In the case of the stipulated time set, make heater discharge water and discharge outside system, have passed through the stipulated time set in advance
In the case of, make heater discharge water and supply to defecator.
Here, " setting " (discharges in feedwater, heater to what boiler flowed in the boiler response rate of generating equipment
Ratio shared by water) it is 10% and boiler inlet is set to above-mentioned JIS prescribed by standard for the concentration of iron in feedwater
Strict reference value (2 μ g/l) below in the case of be 20 (=2 ÷ 0.1) μ g/l.
It addition, " time of regulation " reality in this generating equipment was measured, from adding that heater discharge casing is discharged
Hot device is discharged the iron concentration in water and is down to the time (such as 4 hours) that below setting is required.
Thereby, it is possible to be down to below the reference value of JIS prescribed by standard by carry to boiler for the concentration of iron in feedwater.
On the basis of the minimizing technology of the ferrous components in the heater discharge water of the generating equipment of described first method, also
Being configured to, the pressure in the porch of described defecator reaches rule with the difference of the pressure in the exit of described defecator
After more than fixed pressure, via the bypass pipe walking around described defecator, described heater is discharged water and guide to described supply
Water heater.
The minimizing technology of the ferrous components in water discharged by heater according to such generating equipment, in the differential pressure of defecator
After reaching more than the pressure (such as 110kPa) of regulation, via the bypass pipe walking around defecator, heater is discharged water and supply
To for feed-water heater.
Thereby, it is possible to guarantee the output to boiler supply.
On the basis of the minimizing technology of the ferrous components in the heater discharge water of the generating equipment of described structure, it is also possible to
It is configured to, guides to described for feed-water heater when described heater being discharged water via the bypass pipe walking around described defecator
Time, make described heater discharge water and flow to described defecator with minimum discharge.
The minimizing technology of the ferrous components in water discharged by heater according to such generating equipment, in the differential pressure of defecator
In the case of reaching more than the pressure (such as 110kPa) of regulation, the heater of minimum discharge is made to discharge current direction defecator.
Thereby, it is possible to prevent the fixing attachment of the iron particle captured by defecator.
On the basis of the minimizing technology of the ferrous components in the heater discharge water of the generating equipment of described structure, it is also possible to
It is configured to, makes described heater discharge water only by constituting the skin section of the filter element of described defecator, thus replace collecting and be somebody's turn to do
The water of the inside of the container of filter element.
The minimizing technology of the ferrous components in water discharged by heater according to such generating equipment, owing to not leading to filter element
Water, does not carries out the seizure of ferrum, therefore, it is possible to without need for making minimum discharge flow through required filter element (such as, for catching
Filter element needed for 5t/H × Fe:20ppb (mg/t) × 24H × 365day=876g-Fe).
Invention effect
The minimizing technology of the ferrous components in water discharged by the heater of the generating equipment according to the present invention, played can make to
The effect being down to below reference value for the concentration of iron in feedwater of boiler conveying.
Accompanying drawing explanation
Fig. 1 is the brief configuration figure of the generating equipment of one embodiment of the present invention.
Fig. 2 is the system diagram of the major part of the generating equipment being shown specifically one embodiment of the present invention.
Fig. 3 is the brief figure of the defecator illustrating one embodiment of the present invention, and (a) is longitudinal sectional view, and (b) is filter
The axonometric chart of core.
Fig. 4 is the brief figure of the defecator of other embodiments illustrating the present invention, and (a) is longitudinal sectional view, and (b) is
The top view of filter element.
Fig. 5 is the brief figure of the defecator illustrating another embodiment of the present invention, and (a) is longitudinal sectional view, and (b) is
The top view of filter element.
Fig. 6 is the brief figure of the defecator illustrating another embodiment of the invention, and (a) is longitudinal sectional view, and (b) is
The axonometric chart of filter element.
Detailed description of the invention
Hereinafter, with reference to Fig. 1 and Fig. 2, the heater of the generating equipment of one embodiment of the present invention is discharged the ferrum in water
The minimizing technology of composition illustrates.
Fig. 1 is the brief configuration figure of the generating equipment of present embodiment, and Fig. 2 is that the generating being shown specifically present embodiment sets
The system diagram of standby major part.
It should be noted that limit the present invention not by present embodiment.It addition, the structural element of present embodiment
The structural element being readily apparent that including those skilled in the art or the structural element being substantially equal to.
As it is shown in figure 1, the generating equipment 10 of present embodiment possesses: boiler 118, it utilizes the heat of self-heat power to produce
Steam 11；Steam turbine 12, it is operated by the steam 11 of this boiler 118；Condenser 106, it makes from this steam
The aerofluxus condensation of turbine 12；Water system A, the condensed water after it will be condensed by this condenser 106 feeds water 107 to described as confession
Boiler 118 side carries；And low pressure is for feed-water heater 109, it is arranged on the feed pipe 13 of described water system A, extraction
A part for the aerofluxus carried to after-heater 115 from described steam turbine 12, as extraction gas 14, uses this extraction gas
Body 14 heats for feedwater 107 described, and, generating equipment 10 is also equipped with: low-pressure heater discharge casing 116, its storage
Water 117 discharged by the heater discharged for feed-water heater 109 from described low pressure；Defecator 15, described heater is discharged by it
Ferrous components in water 117 filters；And (second) stream switching part 16B, it is arranged on described low-pressure heater discharge casing
Between 116 and described defecator 15, discharge water 117 at the described heater discharged from described low-pressure heater discharge casing 116
In iron concentration than setting (being 20 μ g/l in the present embodiment) height in the case of, by described heater discharge water
117 are discharged to outside system, the iron concentration discharged in water 117 at described heater be below setting in the case of switching stream
Road, in order to supply to described defecator 15.
It should be noted that the setting that described heater is discharged the iron concentration in water 117 is set to 20 μ g/l's
Reason is, (described to the inflow of described boiler 118 supplies feedwater 107 to the boiler response rate of the generating equipment 10 of present embodiment
In, described heater discharge ratio shared by water 117) be 10%.That is, its reason is, to by the supply of boiler inlet
Concentration of iron in water is down to the most stringent of reference value (2 μ g/l) of above-mentioned JIS prescribed by standard below, as long as by described heating
Device is discharged the setting of the iron concentration in water 117 and is set to 20 (=2 ÷ 0.1) μ g/l.Therefore, in generating equipment 10
In the case of the boiler response rate is 5%, the setting of the iron concentration in water 117 discharged by described heater is 40 μ g/l.
It addition, in the present embodiment, the iron concentration that described heater is discharged in water 117 calculates as follows.
Here, iron ion refers to the ferrum of the microgranule that defecator 15 cannot be utilized to catch, such as, particle diameter is below 0.1 μm.
First, extract, from described low-pressure heater discharge casing 116, the examination that the full ferrum (iron particle+iron ion) of equivalent is analyzed
Sample water I, the sample water II of iron particle analysis.
It follows that use absorption photometry etc. to measure the ferrum total amount contained by sample water I of full ferrous components analysis.
Then, make the sample water II of iron particle analysis by the filter that fine pore is 0.1 μm, use absorption photometry
Etc. measuring by the iron particle amount of filters trap.
Then, deduct iron particle amount from ferrum total amount, obtain the quality of iron ion.
The quality of iron ion, divided by the capacity of sample water, calculates described heater and discharges the iron concentration in water 117.
Here, in the generating equipment 10 of present embodiment, utilize the institute in the downstream being arranged in described steam turbine 12
State condenser 106 and obtain condensed water, and, as required by from be arranged at outside extra feed tank 104 make-up water 105 with
Described condensed water mixes, and is circulated to water system A as feedwater 107 supply.
It should be noted that in water system A of present embodiment, supply with described low pressure at described condenser 106
Between water heater 109, condensate pump 18, electromagnetic filter 19, pure water device 20 and condensed water booster 21 are arranged at institute
State on feed pipe 13, supply between feed-water heater 109 and described high voltage supply water heater 112 in described low pressure, degasser
110, storagetank 111 and boiler water supply pump 22 are arranged on described feed pipe 13.
It addition, in described low pressure for heated for feeding water 107 at high voltage supply water heater in feed-water heater 109
The extraction gas of not shown high temp/high pressure is used to be further heated in 112.Further, added by described high voltage supply water
Hot device 112 and heated described 107 be transported to described boiler 118 for feedwater.
Here, in the present embodiment, discharge for feed-water heater 109 from the described described low pressure for feedwater 107 of heating
Described heater discharge water 117 be stored in described low-pressure heater discharge casing 116, by low-pressure heater draining pump 23 from
This low-pressure heater discharge casing 116 is discharged to described defecator 15.
Then, according to the iron concentration in the described heater discharge water 117 calculated from described sample water I/II
Measurement result, it is judged that whether iron concentration is below setting.Then, it is judged that result be, described heater discharge water
In the case of iron concentration in 117 is higher than setting, described stream switching part 16B is utilized to switch stream, by described heating
Device is discharged water 117 and is discharged to outside system, the situation that iron concentration is below setting in water 117 discharged by described heater
Under, described heater discharge water 117 is supplied to described defecator 15, removes described heater and discharge the abrasive grit in water 117
Son.
It addition, in the present embodiment, the iron concentration in water 117 discharged by described heater is below setting
In the case of, it is also possible to switch stream by stream switching part 16A, described heater discharge water 117 is supplied to described condenser
106 so that it is circulate in water system A.
Here, in the present embodiment, the iron concentration in water 117 discharged by described heater is below setting
In the case of, utilize described defecator 15 to filter iron particle, will carry also to described feed pipe 13 side of described water system A
The described heater discharge water 117 of mixing, as discharging drainage 117A, will supply to described condenser 106 side as recycling water
The described heater given discharges water 117 as discharging for feedwater 117B.
It addition, in the present embodiment, the setting of the iron concentration in water 117 discharged by described heater is 20 μ
In the case of below g/l, supply described discharge for feedwater 117B to described condenser 106, and make it follow in water system A
Ring.It is intended that such as, when described discharge supplies to described condenser 106 as recycling water for feedwater 117B, it is to avoid
The device being arranged in described water system A is discharged the iron particle in water 117 etc. by described heater and is polluted.
It addition, when supplying described discharge for feedwater 117B to condenser 106, utilize and be arranged at the condensation of side downstream
Reason device (filter and condensation desalter) (not shown) is removed ferrous components further and reclaims to system, therefore can also
Realize the saving of water.
It should be noted that in the present embodiment, though the rule of the iron concentration described heater discharged in water 117
Definite value is set to 20 μ g/l, but the present invention is not limited to this, is being set to the loosest reference value (5 of above-mentioned JIS prescribed by standard
μ g/l) below in the case of, it is also possible to the setting that the iron concentration in water 117 discharged by described heater is set to 50 μ g/
l。
It addition, the reference 114 in Fig. 1 is superheater.
As shown in Figure 1 and Figure 2, water 117 discharged by the described heater discharged for feed-water heater 109 from described low pressure
(low pressure is for feed-water heater) is directed to described low-pressure heater discharge casing 116 via drain header 31.
The iron concentration discharged in water 117 at described heater be below setting in the case of, add from described low pressure
The described heater that hot device discharge casing 116 is discharged is discharged water 117 and is directed to described defecator 15 via drain header 31, logical
Cross described defecator 15 filter out iron particle discharge drainage 117A via described drain header 31 to described water system A
The conveying of described feed pipe 13 side, described with flowing in described feed pipe 13 107 mixes for feedwater.
It addition, the iron concentration discharged in water 117 at described heater be below setting in the case of, it is also possible to will
The described heater discharged from described low-pressure heater discharge casing 116 discharges water 117 via in described stream switching part 16A branch
The draining branch road 32 of (low pressure is for feed-water heater) guides to described condenser 106, generates as recycling water to described condensation
The discharge of device 106 side supply is for feedwater 117B.
On the other hand, in the case of the iron concentration in water 117 discharged by described heater is higher than setting, from described
The described heater that low-pressure heater discharge casing 116 is discharged is discharged water 117 and is discharged to outside system via the outer discharge pipe 33 of system.
Further, as in figure 2 it is shown, be provided with bypass pipe 34 in the generating equipment 10 of present embodiment, this bypass pipe 34 will
Drain header 31 between described stream switching part 16B and described defecator 15 and be positioned at described defecator 15 with
Described low pressure connects for the drain header 31 between feed-water heater 109.
It addition, be provided with on the drain header 31 between described stream switching part 16B and described defecator 15
Minimum discharge supply pipe 35 and minimum discharge foldback pipe 36, this minimum discharge foldback pipe 36 will be located in described defecator 15 with
Described low pressure is for the drain header 31 between feed-water heater 109 and is positioned at described low-pressure heater discharge casing 116 with described
Drain header 31 between stream switching part 16A connects.
It should be noted that one end of bypass pipe 34 (upstream extremity) be connected to than minimum discharge supply pipe 35 one end (on
Trip end) by the drain header 31 of upstream side.
It addition, at the described heater will discharged from described low-pressure heater discharge casing 116 by described drain header 31
Discharge water 117 to guide to described defecator 15, make to be arranged on described stream switching part 16A and switch with described stream
Valve 41, the valve 42 being arranged between described stream switching part 16B and described defecator 15 between portion 16B and be positioned at ratio
Described defecator 15 downstream and merging part (position) the top trip connected than the other end of bypass pipe 34 (downstream)
The position of side is also arranged on valve 43 standard-sized sheet respectively of midway of described drain header 31, makes to be arranged in described draining branch road 32
The valve 44 on way, it is arranged on the valve 45 of the midway of the outer discharge pipe 33 of described system, is arranged on the valve 46 of the midway of bypass pipe 34, arranges
The valve 48 of the valve 47 supplying the midway of pipe 35 in minimum discharge and the midway being arranged on minimum discharge foldback pipe 36 is the most complete
Close.
Water 117 is discharged via described draining master at the described heater will discharged from described low-pressure heater discharge casing 116
When pipe 31 guides to described defecator 15, in the pressure of porch and the going out of described defecator 15 of described defecator 15
After the difference (differential pressure of described defecator 15) of the pressure at Kou reaches more than the pressure (such as 110kPa) of regulation, or institute
State heater and discharge the iron particle in the exit that iron concentration is 20 below μ g/l and described defecator 15 in water 117
After amount reaches 0 μ g/l, described valve 43 switches to fully closed from standard-sized sheet, and described valve 46 is from the fully closed standard-sized sheet that switches to, and opens institute
State valve 47,48, it is ensured that to the output of described boiler 118 supply, and described heater is discharged water 117 and flowed to minimum discharge
Described defecator 15.Here, the minima that minimum discharge refers to can be measured that using effusion meter is as during benchmark, such as
Towards the water flowing flow of filter about 2%.
Here, the defecator 15 used in the present embodiment is required to supply the general of feed-water heater 109 in low pressure
Use under water condition during logical operating.Accordingly, as the defecator 15 used in the present embodiment, for example, it is preferable to use
Be made up of polysulfones acid, Kynoar (PVDF), Kevlar (registered trade mark), metal porous filter etc., fine pore is 0.1
The bouffancy type filter element of μm, but the present invention is not limited to this.
The minimizing technology of the ferrous components in water discharged by the heater of the generating equipment 10 according to present embodiment, from heating
The heater that device discharge casing 116 is discharged discharge the iron concentration in water higher than 20 μ g/l in the case of, heater is discharged water
Being discharged to outside system discharge, the iron concentration in water discharged by the heater discharged from heater discharge casing 116 is 20 μ g/l
In the case of below, described heater discharges water supply to described defecator 15.
Here, " setting " (discharges in feedwater, heater to what boiler flowed in the boiler response rate of generating equipment
Ratio shared by water) it is 10%, and boiler inlet is set to above-mentioned JIS prescribed by standard for the concentration of iron in feedwater
Strict reference value (2 μ g/l) situation below is 20 (=2 ÷ 0.1) μ g/l.
Thereby, it is possible to make the concentration of iron in feedwater that supplies to boiler 118 conveying be down to the most stringent of of JIS prescribed by standard
Below reference value.
It addition, discharge the minimizing technology of the ferrous components in water according to the heater of the generating equipment 10 of present embodiment,
After the differential pressure of defecator 15 reaches more than the pressure (such as 110kPa) of regulation, via the bypass pipe walking around defecator 15
Heater is discharged water 117 by 34 to be guided to low pressure for feed-water heater 109.
Thereby, it is possible to guarantee the output to boiler 118 supply.
Additionally, discharge the minimizing technology of the ferrous components in water according to the heater of the generating equipment 10 of present embodiment,
In the case of the differential pressure of defecator 15 is more than the pressure (such as 110kPa) of regulation, water discharged by the heater of minimum discharge
117 flow to defecator 15.
Thereby, it is possible to prevent the fixing attachment of the iron particle caught by defecator 15.
It should be noted that the present invention is not limited to above-mentioned embodiment, it is possible to after taking the circumstances into consideration deformation/change as required
It is carried out.
Such as, in the above-described embodiment, the ferrum in water discharged by the heater discharged from heater discharge casing 116 from
Sub-concentration reach 20 μ g/l (setting) below after, make heater discharge water by defecator 15.
But, the present invention is not limited to this, it is also possible to after the stipulated time set in advance, make heater discharge
Water passes through defecator 15.
Here, " time of regulation " reality in this generating equipment was measured, from adding that heater discharge casing is discharged
Hot device is discharged the iron concentration in water and is down to the time that below setting is required.Such as, it is setting of 1000MW at output
In the case of Bei, being down to below 20 μ g/l (setting) from generation draining to iron concentration needs about two hours.Therefore, at warp
After spending two hours, start to defecator 15 water flowing.So, by previously according to actual value corresponding with equipment output
Determine the water flowing start time to defecator 15 water flowing, it is possible to realize the raising of working performance.
It addition, in the above-described embodiment, when the heater discharge water 117 of minimum discharge flows to defecator 15,
As shown in Fig. 3 (a) and Fig. 3 (b), proceed the water flowing towards filter element 15a.
But, the present invention is not limited to this, as shown in Fig. 4 (a) and Fig. 4 (b), it is also possible to only to the top layer of filter element 15a
Portion's water flowing, makes the water flowing towards filter element 15a interrupt, changes the water within container 15b of defecator 15.
In this case, owing to not to filter element 15a water flowing, not carrying out the seizure of ferrum, therefore, it is possible to without need for making
Filter element 15a needed for minimum discharge flowing is (such as, for catching 5t/H × Fe:20ppb (mg/t) × 24H × 365day=
Filter element 15a needed for 876g-Fe).
It should be noted that in this case it is necessary to be directed onto the inside of container 15b and only by filter element 15a's
The water 117 pipe arrangement 15c to the discharge of the exterior guiding of container 15b discharged by the heater of skin section.
Additionally, in the embodiment shown in Fig. 4 (a) and Fig. 4 (b), make only by skin section and the court of filter element 15a
Interrupt to the water flowing of filter element 15a, when changing the water within container 15b of defecator 15, as shown in Fig. 5 (a) and Fig. 5 (b),
The liquid (citric acid, EDTA etc.) making ferrum clean passes through the inside of container 15b, changes inside the container 15b of defecator 15
Water be more appropriate.
In this case, the liquid utilizing ferrum to clean makes to be attached to the one of the iron oxides of the skin section of filter element 15a
It is partly dissolved, removes from the skin section of filter element 15a, therefore, it is possible to extend the life-span of filter element 15a.
In addition, in the embodiment shown in Fig. 1 and Fig. 2, as shown in Fig. 6 (a) and Fig. 6 (b), set in generating
When being waited for for 10, the pure water of minimum discharge is made to pass through towards filter element 15a the other way around such that it is able to filter element 15a
The structure carrying out backwash is more appropriate.
In this case, it is possible to make filter element 15a renovate, it is possible to extend the life-span of filter element 15a.
Description of reference numerals is as follows:
10 generating equipments
12 steam turbines
13 feed pipes
15 defecators
15a filter element
15b container
34 bypass pipes
106 condensers
109 (low pressure) is for feed-water heater
115 after-heaters
116 heater discharge casings
Water discharged by 117 heaters
118 boilers
A water system
Claims (5)
1. a minimizing technology for the ferrous components during water discharged by the heater of generating equipment, this generating equipment has:
Boiler, it produces steam by carrying out the heat of self-heat power；
Steam turbine, it is operated by the steam of described boiler；
Condenser, it makes the aerofluxus from described steam turbine condense；
Water system, the condensed water after described condenser condenses is supplied to described boiler side by it as feedwater；
For feed-water heater, it is arranged on the feed pipe of described water system, extracts from described steam turbine to post bake
Device conveying aerofluxus a part and with its heating described for feedwater；
Heater discharge casing, its storage discharges water from the described heater discharged for feed-water heater；And
Defecator, the iron particle in its filtration described heater discharge water,
Further, described generating equipment is injected oxygen to described confession and carries out oxidation processes in feedwater, wherein,
The situation that iron concentration in water discharged by the described heater discharged from described heater discharge casing is higher than setting
Under, make described heater discharge water and discharge outside system, discharge water at the described heater discharged from described heater discharge casing
In iron concentration be below setting in the case of, make described heater discharge water supply to described defecator,
Or, not in the case of the stipulated time set in advance, make described heater discharge water and discharge outside system,
In the case of have passed through the stipulated time set in advance, make described heater discharge water and supply to described defecator,
The described stipulated time set in advance be the described heater discharged from the described heater discharge casing ferrum of discharging water from
Sub-concentration is down to the time that below setting is required.
The minimizing technology of the ferrous components in the heater discharge water of generating equipment the most according to claim 1, wherein,
The difference of the pressure in the exit of the pressure in the porch of described defecator and described defecator reaches the pressure of regulation
After more than power, via the bypass pipe walking around described defecator, described heater is discharged water and guide to described for feedwater heating
Device.
The minimizing technology of the ferrous components in the heater discharge water of generating equipment the most according to claim 2, wherein,
When described heater being discharged water guiding to the most described confession feed-water heater via the bypass pipe walking around described defecator,
Make described heater discharge water and flow to described defecator with minimum discharge.
The minimizing technology of the ferrous components in the heater discharge water of generating equipment the most according to claim 3, wherein,
Make described heater discharge water only by constituting the skin section of the filter element of described defecator, thus replace this filter element of collecting
The water of inside of container.
5. a generating equipment, has:
Boiler, it produces steam by carrying out the heat of self-heat power；
Steam turbine, it is operated by the steam of described boiler；
Condenser, it makes the aerofluxus from described steam turbine condense；
Water system, the condensed water after described condenser condenses is supplied to described boiler side by it as feedwater；
For feed-water heater, it is arranged on the feed pipe of described water system, extracts from described steam turbine to post bake
Device conveying aerofluxus a part and with its heating described for feedwater；
Heater discharge casing, its storage discharges water from the described heater discharged for feed-water heater；And
Defecator, the iron particle in its filtration described heater discharge water,
Further, described generating equipment is injected oxygen to described confession and carries out oxidation processes in feedwater, wherein,
The situation that iron concentration in water discharged by the described heater discharged from described heater discharge casing is higher than setting
Under, make described heater discharge water and discharge outside system, discharge water at the described heater discharged from described heater discharge casing
In iron concentration be below setting in the case of, make described heater discharge water supply to described defecator,
Or, not in the case of the stipulated time set in advance, make described heater discharge water and discharge outside system,
In the case of have passed through the stipulated time set in advance, make described heater discharge water and supply to described defecator,
The described stipulated time set in advance be the described heater discharged from the described heater discharge casing ferrum of discharging water from
Sub-concentration is down to the time that below setting is required.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/083940 WO2014102978A1 (en) | 2012-12-27 | 2012-12-27 | Method for removing iron components from heater drain water in power-generating plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104520643A CN104520643A (en) | 2015-04-15 |
| CN104520643B true CN104520643B (en) | 2016-08-24 |
Family
ID=51020130
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280075201.7A Active CN104520643B (en) | 2012-12-27 | 2012-12-27 | The minimizing technology of the ferrous components in water discharged by the heater of generating equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104520643B (en) |
| WO (1) | WO2014102978A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7286530B2 (en) * | 2019-12-26 | 2023-06-05 | 三菱重工業株式会社 | Water treatment equipment, power plant, and water treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290639A (en) * | 2002-04-01 | 2003-10-14 | Babcock Hitachi Kk | Oxygen injection device |
| JP2008025922A (en) * | 2006-07-21 | 2008-02-07 | Mitsubishi Heavy Ind Ltd | Turbine facility, and water treatment method of heater drain water from turbine facility |
| JP2009243836A (en) * | 2008-03-31 | 2009-10-22 | Mitsubishi Heavy Ind Ltd | Oxygen processing method of turbine equipment, and turbine equipment |
| CN202105502U (en) * | 2011-06-02 | 2012-01-11 | 孙维涛 | High-temperature iron removing filter of condensed water in boiler |
| CN202419635U (en) * | 2011-12-20 | 2012-09-05 | 西安龙源环保科技工程有限责任公司 | High-temperature heat supply network drainage processing system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5084162A (en) * | 1990-10-03 | 1992-01-28 | Allied-Signal Inc. | Push-on automotive filter |
| JP2005288391A (en) * | 2004-04-02 | 2005-10-20 | Hitachi Ltd | Oil filter device |
| JP2010131568A (en) * | 2008-12-08 | 2010-06-17 | Toyota Boshoku Corp | Filter for air conditioning |
| US20120292243A1 (en) * | 2011-05-18 | 2012-11-22 | Pall Corporation | Filter arrangments and filter apparatuses which include filter arrangements |
-
2012
- 2012-12-27 CN CN201280075201.7A patent/CN104520643B/en active Active
- 2012-12-27 WO PCT/JP2012/083940 patent/WO2014102978A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003290639A (en) * | 2002-04-01 | 2003-10-14 | Babcock Hitachi Kk | Oxygen injection device |
| JP2008025922A (en) * | 2006-07-21 | 2008-02-07 | Mitsubishi Heavy Ind Ltd | Turbine facility, and water treatment method of heater drain water from turbine facility |
| JP2009243836A (en) * | 2008-03-31 | 2009-10-22 | Mitsubishi Heavy Ind Ltd | Oxygen processing method of turbine equipment, and turbine equipment |
| CN202105502U (en) * | 2011-06-02 | 2012-01-11 | 孙维涛 | High-temperature iron removing filter of condensed water in boiler |
| CN202419635U (en) * | 2011-12-20 | 2012-09-05 | 西安龙源环保科技工程有限责任公司 | High-temperature heat supply network drainage processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104520643A (en) | 2015-04-15 |
| WO2014102978A1 (en) | 2014-07-03 |
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Address after: Kanagawa Prefecture, Japan Patentee after: Mitsubishi Power Co., Ltd Address before: Kanagawa Prefecture, Japan Patentee before: MITSUBISHI HITACHI POWER SYSTEMS, Ltd. |