CN106051732A - Condensate water cleaning system and condensate water cleaning method based on condensate water cleaning system - Google Patents
Condensate water cleaning system and condensate water cleaning method based on condensate water cleaning system Download PDFInfo
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- CN106051732A CN106051732A CN201610591231.3A CN201610591231A CN106051732A CN 106051732 A CN106051732 A CN 106051732A CN 201610591231 A CN201610591231 A CN 201610591231A CN 106051732 A CN106051732 A CN 106051732A
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- water
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- flushing
- heater
- condensate
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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
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/52—Washing-out devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a condensate water cleaning system and a condensate water cleaning method based on the condensate water cleaning system. The system comprises condensers (1), a condensate water pump (2), a fine treatment device (3), a shaft seal heater (4), a low-pressure heater set (5), a low-temperature economizer (6), a drain water cooler (7) and a deaerator (8). According to the condensate water cleaning method, open type flushing, condenser inner flushing and condenser and deaerator cyclic flushing are sequentially conducted to achieve rapid and effective flushing of condensate water, the condensate water flushing efficiency is greatly improved, and meanwhile environment pollution is avoided.
Description
Technical field
The invention belongs to power station equipment field, be specifically related to a kind of water purging system and condensation water based on it of condensing and clean
Method.
Background technology
Newly constructed boiler, during manufacturing, installing and use, inevitably forms oxide skin, corrosion product and weldering
Slag etc., and the impurity such as sand, dust, cement and insulation material can be brought into.These impurity can affect normally making of boiler controller system
With, so should be carried out processing before boiler puts into operation, eliminate the various impurity above-mentioned that may be present in pipeline.
At present, existing condensation water flushing method substantially step is: starts condensate transfer pump and intakes to condenser and protect
Hold ordinary water level, start condensate pump and be rinsed to condensate system；Condense Jellyfish pipe, the most directly discharge flushing, by #
5 low-pressure heaters start the discharge that discharges water, and after water quality is qualified, oxygen-eliminating device is intake, and carries out oxygen-eliminating device and condenser wash cycles, until
When iron content is less than 100ppb, flushing terminates, and schematic flow sheet is as shown in Figure 2.The shortcoming of the method: scavenging period is long, uses water
Amount is big, takes electricity, and completing once flushing about needs 11 hours, and work efficiency is relatively low.
Summary of the invention
For solving the problems referred to above, the invention provides and a kind of condense water purging system and condensation water cleaning side based on it
Method, described condensation water cleaning method has clear technological operation, easy to control, the cleaning duration is short, economize on electricity, environmentally safe
Feature.
It is an object of the invention to be achieved through the following technical solutions:
A kind of condensation water purging system, described system includes condenser, condensate pump, precision processing device, gland heater, low pressure
Heater group, low-level (stack-gas) economizer, drain cooler and oxygen-eliminating device, condenser is connected to condensate pump, described precision processing by pipeline
Device uses the connected mode of medium voltage network, is directly connected on the outlet of condensate pump；Condensation water after precision processing device enters
Enter gland heater, after described gland heater, pick out condensate line, be adjusted device and return to condenser, formed and condense water again
Circulating system；Described low-pressure heater group includes #5, #6, #7, #8 low-pressure heater, and wherein #7, #8 low-pressure heater is placed in solidifying
The throat of knot device, is integrally forming with coagulator, and the main condensate of #5 low-pressure heater outlet enters deoxygenation through a non-return valve
Device；It addition, be configured with freestanding drain cooler in described system, the hydrophobic of #7, #8 low-pressure heater respectively should from inflow
Drain cooler, described low-level (stack-gas) economizer is placed in boiler tail.
Further, described low-pressure heater group all uses full capacity surface heater.
Further, the extraction pressure of described low-pressure heater group is #5, #6, #7, #8 low-pressure heater from high to low.
Further, deaerator storage tank water level regulation dress is installed between described gland heater and #7 low-pressure heater
Put.
Further, described system also includes solidifying water delivery case, and it is connected with condenser, for condenser water replenishing.
It is another object of the present invention to be achieved through the following technical solutions:
A kind of condensation water cleaning method based on above-mentioned condensation water purging system, comprises the following steps:
1) two condensate transfer pumps are started, flow-control 350t/h, to condensing Jellyfish water inlet tube, notify chemist, solidifying
Bearing water precision processing outlet and carry out ammonification, #5 low-pressure heater start the discharge that discharges water, range estimation water quality becomes can stop clearly discharge punching
Washing, washing time is 1-2 hour；
2) through the water quality treatment described in step 1) become clear after, after oxygen-eliminating device water inlet to high water level, directly discharge water to condenser
The open flushing of row, can stop clearly discharge flushing when range estimation water quality becomes, close and condense Jellyfish pipe water injection valve, stop one and condense water
Delivery pump, starts condensate pump and is circulated flushing, notify chemist, export ammonification in precision processing, and put into condensate fine
Processing fore filter, sampling per hour is chemically examined, and scavenging period is 2-3 hour；
3) when step 2) time iron content is less than 1000ppb in the condensation water that measures, throws precision processing system high flow rate mixed bed, take per hour
Sample is chemically examined, and scavenging period is 2-3 hour；
4) when in the discharge water that step 3) measures, iron content is less than 100ppb, flushing terminates, and completes to condense water and oxygen-eliminating device
Clean.
Further, when carrying out the process of described step 3), oxygen-eliminating device is heated, control the temperature of oxygen-eliminating device not
Higher than 35 DEG C.
Further, step 1) and step 2) in twice ammonification time, control the pH value of water quality higher than 9.0.
The present invention having the beneficial effect that compared to existing technology
1) condensation water cleaning method of the present invention, has cleaning convenient operation and control, cleans the duration and short (compare existing
Cleaning method, can save at least 3 hours), the feature of environmentally safe；
2) condensation water purging system of the present invention, simple in construction, easy to maintenance, easy to operate, the flushing more rapid standard of water quality
Really；
3) condensation water purging system of the present invention, puts into oxygen-eliminating device steam-heating system in advance, controls the temperature of oxygen-eliminating device
Not higher than 35 DEG C, improve cleaning performance；
4) condensation water of the present invention cleans and rinses when using open, low power condensate transfer pump can be used to replace big
The condensate pump of power runs, and energy-saving effect is obvious.
Accompanying drawing explanation
Fig. 1 is condensation water purging system structural representation of the present invention；
Fig. 2 is that prior art condenses water cleaning method schematic flow sheet；
Fig. 3 is condensation water cleaning method schematic flow sheet of the present invention.
Detailed description of the invention
Embodiment 1
The Main Function of main condensate water system is heat-setting water, and from condenser hotwell, condensation water is delivered to oxygen-eliminating device.Condense
Water system refer to by between condenser to oxygen-eliminating device with condense water associated pipe and equipment.As it is shown in figure 1, the condensation of the present embodiment
Water purging system, described system includes condenser 1, condensate pump 2, precision processing device 3, gland heater 4, low-pressure heater group
5, low-level (stack-gas) economizer 6, drain cooler 7 and oxygen-eliminating device 8, condenser 1 is connected to condensate pump 2 by pipeline, and described precision processing fills
Put the connected mode of 3 employing medium voltage networks, be directly connected on the outlet of condensate pump 2；Condensation water after precision processing device enters
Enter gland heater 4, after described gland heater 4, pick out condensate line, be adjusted device and return to condenser, formed and condense water
Recirculation system；Described low-pressure heater group includes #5, #6, #7, #8 low-pressure heater, and wherein #7, #8 low-pressure heater is placed in
The throat of low back pressure coagulator 1,7 sections of extraction lines are arranged in inside condenser, therefore cannot install isolating valve and check
Valve, #7, #8 low-pressure heater is integrally forming with coagulator 1, and the main condensate of #5 low-pressure heater outlet is through a non-return valve
Enter oxygen-eliminating device 8；It addition, be configured with freestanding drain cooler 7 in described system, hydrophobic point of #7, #8 low-pressure heater
Not from flowing into this drain cooler 7, described low-level (stack-gas) economizer 6 is placed in boiler tail.
Further, described low-pressure heater group all uses full capacity surface heater.
Further, the extraction pressure of described low-pressure heater group is #5, #6, #7, #8 low-pressure heater from high to low.
Further, deaerator storage tank water level regulation dress is installed between described gland heater 4 and #7 low-pressure heater
Put.#5 and #6 low-pressure heater is horizontal, all uses little bypass (each heater has individually bypass).When heater water level mistake
High or because of other fault need isolation maintenance time, close this heater import and export electric gate valve, electric bypass valve automatically turns on.#
7,8 low-pressure heaters are that horizontal combinative structure is placed in condenser throat, use big bypath system.When its fault, import and export electricity
Dynamic gate valve is automatically switched off, and electric bypass valve automatically turns on.Low-level (stack-gas) economizer layout boiler tail is when its fault, and import and export is electric
Dynamic gate valve is automatically switched off, and electric bypass valve automatically turns on.
Further, described system also includes solidifying water delivery case 9, and it is connected with condenser, for condenser water replenishing.Every
Unit is provided with a 300m3Solidifying water delivery case, when properly functioning to condenser hotwell moisturizing and reclaim hot well high water level time
Backwater, and chemistry filled water is provided；There is provided to condensate system and closed-type circulating cooling water system during unit starting and start
Water filling.The demineralized water that solidifying water delivery case water source comes from chemical water treatment plant, its water level is by the regulation valve control supplemented on water water inlet pipe
System.The storage tank of two units is provided with liaison tube.
Flow process as shown in Figure 3, condensation water cleaning method based on above-mentioned condensation water purging system, comprise the following steps:
1) two condensate transfer pumps are started, flow-control 350t/h, to condensing Jellyfish water inlet tube, notify chemist, solidifying
Bearing water precision processing outlet and carry out ammonification, directly discharge flushing, #5 low-pressure heater start the discharge that discharges water, range estimation water quality becomes the most i.e.
Can stop discharge rinsing, washing time is about 3 hours；
The addition of ammonia determines according to water pH value, and pH value controls higher than 9.0；
2) through the water quality treatment described in step 1) become clear after, after oxygen-eliminating device water inlet to high water level, directly discharge water to condenser
The open flushing of row, can stop clearly discharge flushing when range estimation water quality becomes, close and condense Jellyfish pipe water injection valve, stop one and condense water
Delivery pump, starts condensate pump and is circulated flushing, notify chemist, in the outlet ammonification of precision processing device, and puts into solidifying
Bearing water precision processing fore filter, sampling per hour is chemically examined, and scavenging period is about 2 hours；
3) when step 2) time iron content is less than 1000ppb in the condensation water that measures, throws precision processing system high flow rate mixed bed, take per hour
Sample is chemically examined, and scavenging period is about 3 hours；
4) when in the discharge water that step 3) measures, iron content is less than 100ppb, flushing terminates, and completes to condense water and oxygen-eliminating device
Clean.
Further, when carrying out the process of described step 3), oxygen-eliminating device is heated, control the temperature of oxygen-eliminating device not
Higher than 35 DEG C.Properly increase water temperature to be easy to iron ion and wash out, improve cleaning performance.Winter low temperature puts into heating in advance, cleans effect
Fruit becomes apparent from.
Claims (7)
1. one kind condenses water purging system, it is characterised in that described system includes condenser (1), condensate pump (2), precision processing
Device (3), gland heater (4), low-pressure heater group (5), low-level (stack-gas) economizer (6), drain cooler (7) and oxygen-eliminating device (8),
Condenser (1) is connected to condensate pump (2) by pipeline, and described precision processing device (3) uses the connected mode of medium voltage network, directly
It is connected on the outlet of condensate pump (2)；Condensation water after precision processing device enters gland heater (4), the envelope heating of described axle
Device picks out condensate line after (4), is adjusted device and returns to condenser, is formed and condense water recirculation system；Described low-pressure heating
Device group includes #5, #6, #7, #8 low-pressure heater, and wherein #7, #8 low-pressure heater is placed in the throat of coagulator (1), with coagulator
(1) being integrally forming, the main condensate of #5 low-pressure heater outlet enters oxygen-eliminating device (8) through a non-return valve；In described system
Being configured with freestanding drain cooler (7), the hydrophobic of #7, #8 low-pressure heater flows into this drain cooler (7), institute respectively certainly
State low-level (stack-gas) economizer (6) and be placed in boiler tail.
Condensation water purging system the most according to claim 1, it is characterised in that described low-pressure heater group all uses full appearance
Amount surface heater.
Condensation water purging system the most according to claim 2, it is characterised in that the extraction pressure of described low-pressure heater group
It is #5, #6, #7, #8 low-pressure heater from high to low.
Condensation water purging system the most according to claim 1, it is characterised in that described gland heater (4) and #7 low pressure
Deaerator storage tank water level control apparatus is installed between heater.
Condensation water purging system the most according to claim 1, it is characterised in that described system also includes solidifying water delivery case (9),
It is connected with condenser, for condenser water replenishing.
6. one kind based on described in claim 1-5 condense water purging system condensation water cleaning method, it is characterised in that described side
Method comprises the following steps:
1) two condensate transfer pumps are started, flow-control 350t/h, to condensing Jellyfish water inlet tube, notify chemist, solidifying
Bearing water precision processing outlet and carry out ammonification, directly discharge flushing, #5 low-pressure heater start the discharge that discharges water, range estimation water quality becomes the most i.e.
Can stop discharge rinsing, washing time is 2-3 hour；
2) through the water quality treatment described in step 1) become clear after, oxygen-eliminating device is intake, and directly discharges water to condenser and carries out open flushing,
Discharge flushing can be stopped clearly when range estimation water quality becomes, close and condense Jellyfish pipe water injection valve, stop a condensate transfer pump, start solidifying
Bear water pump and be circulated flushing, notice chemistry ammonification, and put into condensate polishing treatment fore filter, per hour samplingization
Testing, scavenging period is 1-2 hour；
3) when step 2) time iron content is less than 1000ppb in the condensation water water that measures, throw precision processing system high flow rate mixed bed, per hour
Sampling is chemically examined, and scavenging period is 2-3 hour；
4) when in the discharge water that step 3) measures, iron content is less than 100ppb, flushing terminates, and completes to condense water and oxygen-eliminating device
Clean.
Condensation water cleaning method the most according to claim 6, it is characterised in that when carrying out the process of described step 3),
Heating oxygen-eliminating device, the temperature controlling oxygen-eliminating device is not higher than 35 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591231.3A CN106051732A (en) | 2016-07-26 | 2016-07-26 | Condensate water cleaning system and condensate water cleaning method based on condensate water cleaning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591231.3A CN106051732A (en) | 2016-07-26 | 2016-07-26 | Condensate water cleaning system and condensate water cleaning method based on condensate water cleaning system |
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| CN106051732A true CN106051732A (en) | 2016-10-26 |
Family
ID=57416988
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|---|---|---|---|
| CN201610591231.3A Pending CN106051732A (en) | 2016-07-26 | 2016-07-26 | Condensate water cleaning system and condensate water cleaning method based on condensate water cleaning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108716666A (en) * | 2018-06-20 | 2018-10-30 | 华润电力（渤海新区）有限公司 | A kind of hot purging method of super critical boiler system and system |
| CN109404875A (en) * | 2018-08-31 | 2019-03-01 | 神华国华清远发电有限责任公司 | A kind of cold conditions purging method of the ultra supercritical double reheat boiler without circulating pump |
| CN110017474A (en) * | 2019-03-27 | 2019-07-16 | 西安协力动力科技有限公司 | Water developing technique after a kind of Boiler Chemical |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716666A (en) * | 2018-06-20 | 2018-10-30 | 华润电力（渤海新区）有限公司 | A kind of hot purging method of super critical boiler system and system |
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| CN109404875A (en) * | 2018-08-31 | 2019-03-01 | 神华国华清远发电有限责任公司 | A kind of cold conditions purging method of the ultra supercritical double reheat boiler without circulating pump |
| CN110017474A (en) * | 2019-03-27 | 2019-07-16 | 西安协力动力科技有限公司 | Water developing technique after a kind of Boiler Chemical |
| CN110017474B (en) * | 2019-03-27 | 2020-01-21 | 西安协力动力科技有限公司 | Water washing process after chemical cleaning of boiler |
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