CN205480939U - Hydrophobic recovery system of overcritical heat supply unit heat supply network - Google Patents
Hydrophobic recovery system of overcritical heat supply unit heat supply network Download PDFInfo
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- CN205480939U CN205480939U CN201620278870.XU CN201620278870U CN205480939U CN 205480939 U CN205480939 U CN 205480939U CN 201620278870 U CN201620278870 U CN 201620278870U CN 205480939 U CN205480939 U CN 205480939U
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Abstract
The utility model discloses a hydrophobic recovery system of overcritical heat supply unit heat supply network, including the condenser, and the condensate polishing device that links to each other with the condenser, condensate polishing device intercommunication to multistage low pressure feed water heater's tube side, multistage low pressure feed water heater's tube side is connected to the oxygen -eliminating device, the intercommunication has heating steam extraction steam pipe and the hydrophobic pipe of heating network heater on multistage low pressure feed water heater's first order low pressure feed water heater's the shell side, be equipped with the hydrophobic pipe of low pressure feed water heater on the hydrophobic recovery mouth of low pressure feed water heater shell sides at different levels, the hydrophobic pipe of low pressure feed water heater at different levels communicates to the condenser step by step, through the condensate polishing device, multistage low pressure feed water heater is to the oxygen -eliminating device, constitute the hydrophobic recovery of heat supply unit heat supply network circulation. This kind of system can successfully avoid because the unqualified blowing out hidden danger that causes of quality of water that the hydrophobic entering of heat supply network oxygen -eliminating device arouses, can avoid the hydrophobic drawback that directly gets into the economic nature toboggan that the condenser arouses of heat supply network again.
Description
Technical field
This utility model relates to thermal power plant's supercritical unit heat supply network and condensate system, especially a kind of supercritical
Thermal power plant unit heat supply network drained water recovery system.
Background technology
Along with the development produced and the progress of science and technology, thermal power generation unit develops to high parameter, Large Copacity,
With Subcritical Units (parameter 16.7MPa/536 DEG C/536 DEG C) as comparison basis, supercritical unit (parameter
24.2MPa/566 DEG C/566 DEG C) efficiency higher by 3.2% than it.In order to improve calorific efficiency of heat power station and reduce electricity
Factory's unit capacity cost, increasing supercritical thermal power plant unit enters thermoelectricity market, therewith particularly in north
Side is more and more widely used.The lifting of unit capacity and parameter proposes higher wanting to boiler feed quality
Ask, because it directly influences Turbo-generator Set and the safety of boiler operatiopn, economy, motility.
The winter heating phase, if heat supply network is hydrophobic continues to use Subcritical Units way of recycling, it is directly entered oxygen-eliminating device, will make
Become Unit Steam Water system major part working medium without precision processing desalination purification be again introduced into system circulation, to boiler,
Steam turbine safe operation brings grave danger.
Heat supply network exchanger is in heat exchanging process, and steam cools down suddenly, and pipe temperature changes greatly, and causes heating
The hot material of device easily produces gas-evolving electrodes, produces the Fe of larger particles3O4, make the hydrophobic iron-holder of heat supply network exceed super
Criticality benchmark requires iron-holder limit value, and therefore the hydrophobic oxygen-eliminating device that cannot directly enter of heat supply network mixes shape with condensation water
Become feedwater.Heat supply network drain recovery has two kinds of typical scenarios at present: one is that heat supply network hydrophobic employing high-temperature iron removing filters
After device is carried out except ferrum, enter back into oxygen-eliminating device, as shown in Figure 1；Another kind is to carry out heat exchangers for district heating is hydrophobic
Cooling enters condenser, as shown in Figure 2 and Figure 3 after processing.Above two scheme all can solve heat exchangers for district heating
The problem that properly functioning middle iron-holder exceeds standard.But, former scheme ruptures when heat exchangers for district heating tube bank, heat
It is hydrophobic that net recirculated water enters heat supply network, it is necessary to carries out maintenance down, simultaneously heat exchangers for district heating initial start stage, tube bank
Rust to enter heat supply network hydrophobic, for ensureing the Steam-water Quality of boiler, heat supply network is hydrophobic must all be bled off, and makes
Become the biggest waste；Latter scheme will result in unit heat consumption increase about 4.3%, has seriously undermined unit and has used super
The advantage of critical parameters.
Utility model content
The purpose of this utility model is to provide a kind of Novel supercritical thermal power plant unit heat supply network drained water recovery system, will
Heat supply network drain recovery mouth is designed as causing at first order low-pressure heater (No. 5 low add) vapour side entrance, and heat supply network is dredged
Water Substitute For Partial draws gas, heat-setting water, then hydrophobic the and former low-pressure heater of heat supply network hydrophobic together with return step by step
It flow to condenser, after the condensed water precision processing system of former therrmodynamic system carries out desalination purification, be again introduced into system
Circulation.This kind of system can successfully avoid that the water quality caused due to heat supply network hydrophobic entrance oxygen-eliminating device is defective to be caused
Blowing out hidden danger, can avoid again that heat supply network is hydrophobic is directly entered the fraud that the economy that condenser causes significantly declines
End.
According to as above conceiving, this utility model is to realize above-mentioned purpose by the following technical solutions.
A kind of supercritical thermal power plant unit heat supply network drained water recovery system, including condenser, and be connected with condenser
Precision processing device of condensation water, precision processing device of condensation water is communicated to the tube side of multistage low-pressure heater, multistage low
The tube side of pressure heater is connected to oxygen-eliminating device, wherein, and the first order low-pressure heater shell of multistage low-pressure heater
It is communicated with in journey and adds vapours extraction steam pipe and heat exchangers for district heating drain pipe, low-pressure heater shell sides at different levels hydrophobic
Recovery port is provided with low-pressure heater drain pipe, and low-pressure heater drain pipes at different levels are communicated to condenser step by step,
Through precision processing device of condensation water, multistage low-pressure heater to oxygen-eliminating device, constitute thermal power plant unit heat supply network drain recovery
Circulation.
Further, heat exchangers for district heating drain pipe is directly communicated to first order low-pressure heater heating steam inlet,
Add vapours to draw gas merge with first order low-pressure heater, together heat condensing water.
Further, low-pressure heater drain pipes at different levels are communicated to next stage low-pressure heater, add through final stage low pressure
Hot device drain pipe is communicated to condenser and precision processing device of condensation water.
Further, it is provided with condensate pump between described condenser and precision processing device of condensation water.
This utility model advantage is:
1) novel recovery system can successfully avoid the water quality caused due to heat supply network hydrophobic entrance oxygen-eliminating device defective
The blowing out hidden danger caused, can avoid again that heat supply network is hydrophobic to be directly entered the economy that condenser causes and significantly decline
Drawback.
2) compared to the processing system of time condenser after returning oxygen-eliminating device after traditional high-temperature process and lowering the temperature, newly
Type recovery system is without initial investment, and without operating cost, economy is high, drains into condenser side compared to cooling
Formula can reduce loss about 6,000,000.
3) novel recovery system effectively solve heat supply network hydrophobic except ferrum, heat supply network start time discharge water in a large number, pipeline
Rupturing problems such as causing maintenance down, its security and stability is high.
4) novel recovery system is simple.Only cause No. 5 low-pressure heaters by hydrophobic for heat exchangers for district heating by pipeline
Steam side porch, saves heat supply network drainage pump, heat supply network plate type heat exchanger and corresponding subsidiary pipeline thereof.
5) novel recovery system effectively reduces floor space, the processing equipment too much compared to tradition recovery system,
Novel recovery system Jin Xu mono-road pipeline can realize drain recovery, and floor space is little.
6) system can implement (transformation) property height.It is simple, without tramp iron separator and fall that novel recovery system has system
Temperature equipment, it is only necessary to increase by a pipeline, therefore it has and the highest implements (transformation) property.
7) market is extensive.Owing to 350MW supercritical thermal power plant unit in this year is employed more in northern areas
Come the most extensive, the therefore popularization of this Novel supercritical thermal power plant unit engineering heat supply network drained water recovery system, application city
Field is extremely wide.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes the one of the application
Part, is not intended that improper restriction of the present utility model, in the accompanying drawings:
Fig. 1 be heat supply network hydrophobic after high-temperature iron removing device to oxygen-eliminating device recovery system structural representation；
Fig. 2 be heat supply network hydrophobic once cooling after to condenser recovery system structural representation；
Fig. 3 is the most solidifying pump discharge recovery system structural representation after the hydrophobic reducing temperature twice of heat supply network；
Fig. 4 is a kind of Novel supercritical thermal power plant unit heat supply network drained water recovery system structural representation.
In figure: 101, oxygen-eliminating device；102, condenser；103, first order low-pressure heater；104, second
Level low-pressure heater；105, third level low-pressure heater；106, vapours extraction steam pipe and heat exchangers for district heating are added
Drain pipe；107, first order low-pressure heater drain pipe；108, second level low-pressure heater drain pipe；109、
Third level low-pressure heater drain pipe；110, condensate pump；111, precision processing device of condensation water.
Detailed description of the invention
This utility model is described in detail, at this this utility model below in conjunction with accompanying drawing and specific embodiment
Illustrative examples and explanation be used for explaining this utility model, but be not intended as limit of the present utility model
Fixed.
Refering to shown in Fig. 4, this supercritical thermal power plant unit heat supply network drained water recovery system, including condenser 102,
And at the precision processing device of condensation water 111 being connected with condenser 102, described condenser 102 and condensate fine
It is provided with condensate pump 110 between reason device 111.Precision processing device of condensation water 111 is communicated to multistage low pressure and adds
Tube side (first order low-pressure heater 103, second level low-pressure heater 104, the third level low-pressure heating of hot device
Device 105), the tube side of multistage low-pressure heater is connected to oxygen-eliminating device 101, wherein, multistage low-pressure heater
It is communicated with on one-level low-pressure heater 103 (No. 5 low-pressure heaters) shell side and adds vapours extraction steam pipe and add with heat supply network
Hot device drain pipe 106 (5 sections of exhaust tube+heat exchangers for district heating drain pipes), first order low-pressure heater 103 is dredged
Water Sproading mouth is provided with first order low-pressure heater drain pipe 107, hydrophobic time of second level low-pressure heater 104
Closing in is provided with second level low-pressure heater drain pipe 108, third level low-pressure heater 105 drain recovery mouth
Being provided with third level low-pressure heater drain pipe 109, low-pressure heater drain pipes at different levels are communicated to condensing step by step
Device 102, hydrophobic carries out desalination purification process through precision processing device of condensation water, through precision processing device of condensation water 111,
Multistage low-pressure heater, to oxygen-eliminating device 101, constitutes thermal power plant unit heat supply network drain recovery and is again introduced into unit water
Vapour cycle.
It is designed as causing at first order low-pressure heater (No. 5 low add) vapour side entrance by heat supply network drain recovery mouth,
The hydrophobic Substitute For Partial of heat supply network draws gas, heat-setting water, and low-pressure heater drain pipes the most at different levels are communicated to next
Level low-pressure heater, is communicated to condenser and precision processing device of condensation water through final stage low-pressure heater drain pipe.
Condenser it is back to step by step, through the condensation water of former therrmodynamic system together with the hydrophobic and former low-pressure heater of heat supply network is hydrophobic
Precision processing system is again introduced into system circulation after carrying out desalination purification.
This supercritical thermal power plant unit heat supply network drained water recovery system conceive in heat exchangers for district heating hydrophobic be back to condense water
Except the thought of ferrum at the purification again of precision processing device, it is additionally contemplates that simultaneously and needs its temperature is carried out cooling process,
The hydrophobic ion exchange resin to condensed water precision processing system high speed mixed bed of heat supply network is avoided to produce high temperature
Impact.
Above-mentioned thought combine supercritical thermal power plant unit heat supply network draw gas with No. 5 low-pressure heaters draw gas employing same vapour
Source, and the hydrophobic feature than hydrophobic the highest 50 DEG C about 60 DEG C of No. 5 low-pressure heaters of heat supply network, design one
Plant Novel supercritical thermal power plant unit heat supply network drained water recovery system.As shown in Figure 4, this Novel supercritical heat supply machine
Group heat supply network drained water recovery system be different from tradition recovery system be directly by hydrophobic for heat supply network be directly discharged into No. 5 low
Pressure heater vapour side, allows heat supply network is hydrophobic to be heated No. 5 low-pressure heaters together with 5 sections are drawn gas and condense water.Then
Heat supply network is hydrophobic to draw gas hydrophobic hydrophobic step by step from flowing into condenser together as No. 5 low-pressure heaters with 5 sections.This
Plant novel heat supply network drained water recovery system i.e. to realize sending condenser back at condensate fine after hydrophobic for heat supply network cooling
Reason device iron purification, can make full use of again the hydrophobic waste heat of heat supply network to condensing water and carry out stepped heating.
Low-pressure heater drain pipes at different levels can also be communicated to next stage low-pressure heater, warp by this utility model
Final stage low-pressure heater drain pipe is communicated to condenser and precision processing device of condensation water.
As a example by the most commonplace domestic 350MW supercritical thermal power plant unit (specified heating operating mode), right
The parameter feasibility of this Novel supercritical thermal power plant unit heat supply network drained water recovery system, economy, safety are entered
Row demonstration.
(1) parameter feasibility.5 sections of extraction pressure 0.40MPa, temperature 243.2 DEG C；Heat exchangers for district heating is dredged
Water pressure 0.38MPa, temperature 150 DEG C；No. 5 low-pressure heater drain temperatures 89.7 DEG C.Heat exchangers for district heating
Hydrophobic pressure can draw gas with 5 sections and match, and heat exchangers for district heating drain temperature is dredged than No. 5 low-pressure heaters
Coolant-temperature gage is high 60 DEG C, and novel heat supply network drained water recovery system mates angle from technical parameter, has feasibility completely.
(2) economy.Hydrophobic with traditional heat supply network enter after high-temperature iron removing device compared with oxygen-eliminating device, novel time
Receipts system is directly entered low-pressure heater by hydrophobic for heat supply network, according to etc. thermal effect fall method, low-pressure heating can be calculated
Device change of drawing gas causes unit heat consumption rate increase about 0.2%.Specified heating operating mode presses 500t/h, comprehensively utilizes little
Time press 3000h, mark coal unit price 700 yuan/calculate, equivalent RMB 200,000 yuan.Visible, novel heat supply network
Drained water recovery system, from economy point, has feasibility completely.
(3) safety.Novel heat supply network drained water recovery system enters No. 5 low-pressure heaters, nothing by hydrophobic for heat supply network
High-temperature iron removing equipment and heat exchanger etc. are invested, and directly by heat hydrophobic for heat supply network by 7,6, No. 5 low pressure
Heater sends into condenser after utilizing step by step, it is to avoid what heat supply network hydrophobic iron content was directly added into that oxygen-eliminating device causes is
System safety problem, makes full use of again a large amount of thermals source that heat supply network is hydrophobic.Under heat supply network heat exchanger tube ruptures situation,
Even if there being part heat supply network recirculated water to leak into draining system, unit without shutdown, can directly by heat network system every
From inspection, improve unit safety stability.Safety perspective, novel heat supply network recovery system feasibility is high.
Above content be combine that this utility model made by concrete preferred implementation the most specifically
Bright, it is impossible to assert that detailed description of the invention of the present utility model is only limitted to this, for technology belonging to this utility model
For the those of ordinary skill in field, without departing from the concept of the premise utility, it is also possible to if making
Dry simple deduction or replace, all should be considered as belonging to this utility model and be determined by the claims submitted to
Scope of patent protection.
Claims (4)
1. a supercritical thermal power plant unit heat supply network drained water recovery system, including condenser, and is connected with condenser
Precision processing device of condensation water, precision processing device of condensation water is communicated to the tube side of multistage low-pressure heater, multistage
The tube side of low-pressure heater is connected to oxygen-eliminating device, it is characterised in that: the first order low pressure of multistage low-pressure heater
It is communicated with on the shell side of heater and adds vapours extraction steam pipe and heat exchangers for district heating drain pipe, low-pressure heaters at different levels
The drain recovery mouth of shell side is provided with low-pressure heater drain pipe, and low-pressure heater drain pipes at different levels connect step by step
To condenser, through precision processing device of condensation water, multistage low-pressure heater to oxygen-eliminating device, constitute thermal power plant unit heat
Net drain recovery circulates.
A kind of supercritical thermal power plant unit heat supply network drained water recovery system the most according to claim 1, its feature
It is: heat exchangers for district heating drain pipe is directly communicated to first order low-pressure heater heating steam inlet.
A kind of supercritical thermal power plant unit heat supply network drained water recovery system the most according to claim 1, its feature
It is: low-pressure heater drain pipes at different levels are communicated to next stage low-pressure heater, dredges through final stage low-pressure heater
Cross current is to condenser and precision processing device of condensation water.
A kind of supercritical thermal power plant unit heat supply network drained water recovery system the most according to claim 1, its feature
It is: between described condenser and precision processing device of condensation water, be provided with condensate pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620278870.XU CN205480939U (en) | 2016-04-06 | 2016-04-06 | Hydrophobic recovery system of overcritical heat supply unit heat supply network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620278870.XU CN205480939U (en) | 2016-04-06 | 2016-04-06 | Hydrophobic recovery system of overcritical heat supply unit heat supply network |
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| CN205480939U true CN205480939U (en) | 2016-08-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338208A (en) * | 2016-08-19 | 2017-01-18 | 华能北京热电有限责任公司 | Heat supply network drain recovery system and method |
| CN106678769A (en) * | 2017-02-22 | 2017-05-17 | 查都（上海）科技有限公司 | Waste heat recycling system in power station |
| CN107327902A (en) * | 2017-08-17 | 2017-11-07 | 西安西热节能技术有限公司 | Adapt to the heat exchangers for district heating hydrophobic energy recovery system and method for precision processing process |
| CN107555541A (en) * | 2017-09-04 | 2018-01-09 | 大唐东北电力试验研究所有限公司 | Thermal power plant's low plus hydrophobic iron removaling processing system and method |
| CN109520001A (en) * | 2018-12-12 | 2019-03-26 | 沧州华润热电有限公司 | A kind of heat supply network draining system |
| CN114751557A (en) * | 2022-04-29 | 2022-07-15 | 华能国际电力股份有限公司德州电厂 | Automatic water filling and leakage detecting system and method for condenser |
-
2016
- 2016-04-06 CN CN201620278870.XU patent/CN205480939U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106338208A (en) * | 2016-08-19 | 2017-01-18 | 华能北京热电有限责任公司 | Heat supply network drain recovery system and method |
| CN106678769A (en) * | 2017-02-22 | 2017-05-17 | 查都（上海）科技有限公司 | Waste heat recycling system in power station |
| CN107327902A (en) * | 2017-08-17 | 2017-11-07 | 西安西热节能技术有限公司 | Adapt to the heat exchangers for district heating hydrophobic energy recovery system and method for precision processing process |
| CN107327902B (en) * | 2017-08-17 | 2023-04-28 | 西安西热节能技术有限公司 | Heat supply network heater drainage energy recovery system and method suitable for fine treatment process |
| CN107555541A (en) * | 2017-09-04 | 2018-01-09 | 大唐东北电力试验研究所有限公司 | Thermal power plant's low plus hydrophobic iron removaling processing system and method |
| CN107555541B (en) * | 2017-09-04 | 2024-01-05 | 大唐东北电力试验研究所有限公司 | Low-water-adding, water-draining and iron-removing treatment system and method for thermal power plant |
| CN109520001A (en) * | 2018-12-12 | 2019-03-26 | 沧州华润热电有限公司 | A kind of heat supply network draining system |
| CN114751557A (en) * | 2022-04-29 | 2022-07-15 | 华能国际电力股份有限公司德州电厂 | Automatic water filling and leakage detecting system and method for condenser |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180726 Address after: 710065 No. 1 building, No. 12, Qin Tang, No. 187, science and technology four road, hi tech Zone, Xi'an, Shaanxi Patentee after: North China Electric Power Research Institute Co., Ltd. Xi'an branch Address before: 710065 No. 1 building, No. 12, Qin Tang, No. 187, science and technology four road, hi tech Zone, Xi'an, Shaanxi Patentee before: North China Electrical Power Research Institute (Xi'an) Co., Ltd. |