CN205442936U - Automatic recycle system of steam boiler sewer - Google Patents
Automatic recycle system of steam boiler sewer Download PDFInfo
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- CN205442936U CN205442936U CN201620261804.1U CN201620261804U CN205442936U CN 205442936 U CN205442936 U CN 205442936U CN 201620261804 U CN201620261804 U CN 201620261804U CN 205442936 U CN205442936 U CN 205442936U
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- sewer
- heat exchanger
- steam boiler
- water
- boiler
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Abstract
The utility model provides an automatic recycle system of steam boiler sewer, the system includes the sewer system of refining, automatic control system, first heat exchanger and second heat exchanger, and the outlet of sewer of first heat exchanger links to each other with the sewage of second heat exchanger entry, and the outlet of sewer of second heat exchanger links to each other with the refined water entry of first heat exchanger through sewer refined system, and the outer device of the refined water export of first heat exchanger and automatic recycle system is continuous. Through the system, under the prerequisite of guaranteeing boiler blow -off hydrothermal volume and water yield make full use of, through the flow of control boiler sewage, the quality of improvement boiler stove water to improve the quality of steam, guaranteed steam turbine safety, long period run.
Description
Technical field
This utility model belongs to industrial steam boiler technical field, relates to a kind of steam boiler sewer automatic recycling system and processing method thereof.
Background technology
Boiler is a kind of energy conversion, chemical energy in fuel, electric energy etc. are mainly converted into heat energy by it, high temperature, the steam of high pressure or organic heat carrier is exported through boiler, wherein, the boiler producing steam is referred to as steam boiler, it is the most universal boiler, and existing steam boiler is commonly divided into electricity steam boiler, oil-fired steam boiler, gas-steam boiler according to the energy consumed.
In process of production, for controlling the salinity of boiler water, getting rid of grain slag, the guarantee steam quality accumulating in pot, it is necessary to constantly get rid of the bigger stove water of salinity and the grain slag of deposition when boiler operatiopn.Industrial steam boiler with demineralized water as make-up water, general blowdown rate about 2%～5%.These sewers, with certain heat, simultaneously because its basicity is high, hardness number is low, are the water sources of high economic worth.
At present the recycling mode of steam boiler sewer is had:
1. relying on blowdown system to recycle sewer, flash distillation indirect steam is used for oxygen-eliminating device vapour, and after flash distillation, sewage enters sewerage；
2. boiler blow-off Water circulation is as the make-up water of hot-water boiler, and sewer is used for hot-water boiler moisturizing after sedimentation tank behind micropore ceramic filter pond.
3. it is used for preparing regenerated liquid, reduces salt consumption.
4. for reconciling the character of slant acidity water.
5. be used for flue gas desulphurization system uses water.
6. sewer injects circulation after supercooling.
All there is certain defect in recovery and the processing mode of above-mentioned boiler platoon sewer, has the most only reclaimed the heat of sewer such as mode, be not carried out the reuse to sewage, and recovery process is long；Mode does not the most reclaim the measure of sewer heat, and water quality quality is relatively low after processing, it is impossible to reach reuse to the water quality requirement of mesohigh steam boiler；Mode 3., 4., 5. and 6. use to sewer belongs to high-quality low use, and with the lower sewage of economic worth and water quality, that former water replaces is the most reasonable.
Comprehensive analyzing, there is following a few point defect in existing boiler blowdown water Treatment for Reuse mode:
(1) heat and the synthetical recovery of water quality and the overall procedure of utilization or device are lacked；
(2) the untreated recovery of water quality or process are the most thorough；
(3) the high-quality low use of sewer, is used as sewage or former water；
(4) recycling flow process longer, the pressure loss is serious, needs to increase power input；
(5) blowdown flow rate relies on experience or sets a fixed value, it is impossible to modulated in real time, steam quality can be caused defective or blowdown flow rate increases heat, the water loss caused.
Utility model content
Utilize insufficient for platoon sewerage heat energy and the water yield of steam boiler present in above-mentioned prior art, blowdown flow rate can not modulated in real time, and Boiler Steam quality it cannot be guaranteed that and affect the problem such as safe long-term operation of steam turbine, this utility model provides a kind of steam boiler sewer automatic recycling system and processing method thereof.This utility model, on the premise of ensureing that boiler blowdown water heat and the water yield make full use of, by controlling the flow of effluent from boiler, improves the quality of boiler water, thus improves the quality of steam, it is ensured that Turbine Safety, long-term operation.
For reaching this purpose, this utility model by the following technical solutions:
This utility model provides a kind of steam boiler sewer automatic recycling system, described system includes sewer refining system, automatic control system, First Heat Exchanger and the second heat exchanger, the outlet of sewer of First Heat Exchanger and the sewage inlet of the second heat exchanger are connected, the outlet of sewer of the second heat exchanger is connected with the Purified Water entrance of First Heat Exchanger through sewer refining system, and the device outside the Purified Water of First Heat Exchanger exports with automatic recycling system is connected.
In this utility model, automatic control system is by parameters such as the flow of apparatus control system, temperature and liquid level such as instrument and regulation valves.
In this utility model, by the flow of sewage in the heat exchange amount of automatic control system auto-control heat exchanger and processing procedure, to control to reach the requirement of equipment into the water temperature of refining system, monitoring simultaneously process after water quality index, prevent water quality the most up to standard.
In this utility model, the entrance of First Heat Exchanger is the entrance of sewer.
In prior art, the company of steam boiler determines draining and typically first enters back in oxygen-eliminating device through flash distillation process, and steam boiler sewer automatic recycling system described herein is between flash distillation plant and oxygen-eliminating device, i.e. the company of steam boiler determine draining through flash distillation process after enter steam boiler sewer automatic recycling system process, making full use of heat and the water yield of sewer, the sewage processed through steam boiler sewer automatic recycling system enters back in oxygen-eliminating device and processes.
In this utility model, by the flow of sewage in the heat exchange amount of automatic control system auto-control heat exchanger and processing procedure, to control to reach the requirement of equipment into the water temperature of refining system, monitoring simultaneously process after water quality index, prevent water quality the most up to standard.
Following as the preferred technical scheme of this utility model, but the restriction of the technical scheme provided not as this utility model, by the following technical programs, can preferably reach and realize technical purpose of the present utility model and beneficial effect.
As the preferred technical scheme of this utility model, described sewer refining system includes defecator and desalter.In this utility model, after sewer refining system processes, the Purified Water that obtains can be directly entered boiler feed after deoxygenation processes, and again as the moisturizing of steam boiler, has reached to reclaim the purpose of sewer.
As the preferred technical scheme of this utility model, the cold burden entrance of the second heat exchanger with automatic recycling system outside demineralized water pipe network, the combination that softens in grid, fresh water pipe network or recirculated water pipe network any one or at least two be connected, this demineralized water pipe network, to soften grid, fresh water pipe network or recirculated water pipe network be the device in desalting system in steam boiler operating system in prior art.
As the preferred technical scheme of this utility model, the sewage inlet of First Heat Exchanger with automatic recycling system outside the discharging opening of flash distillation plant be connected.Described flash distillation plant is the routine operation device that the company of existing steam boiler determines in disintegrating system in waste pipe, and described flash distillation generally comprises flash tank with pressure and atmospheric flashing tank.In this utility model, the sewage inlet of First Heat Exchanger with automatic recycling system outside the discharging opening of flash distillation plant can utilize the pressure of flash tank with pressure self that sewer is carried, from without newly-increased power lifting means, it is greatly saved processing cost.
The processing method of the automatic recycling system of steam boiler sewer described in this utility model is as follows:
Steam boiler sewer after flash distillation processes carries out heat exchange with Purified Water in First Heat Exchanger, heat exchange to temperature is 100～150 DEG C, heat exchange is carried out with demineralized water subsequently in the second heat exchanger, heat exchange to temperature is 30～40 DEG C, enter sewer refining system and carry out refining filtering and desalting processing, carrying out heat exchange subsequently into First Heat Exchanger and sewer, heat exchange to temperature is 60～95 DEG C, then carries out subsequent treatment；Whole processing procedure is 4～20t/h by the automatic controlling system discharge of sewage.
Compared with prior art, this utility model has the advantages that
The steam boiler integrated device of sewer automatic recycling system described in this utility model, this device passes through the process to draining of the sewer refining system, and the regulation and control that automatic control system is to sewer refining system inflow temperature, can make through sewer refining system process after sewage after deoxygenation direct scope steam boiler as moisturizing reuse, decrease the rate of water make-up of steam boiler, decrease the discharge capacity of sewer, make the discharge capacity relatively prior art of sewage reduce 80～85%.
Meanwhile, this utility model is processed by secondary heat exchange the heat that can reclaim sewer, steam quality can be improved by the automatic controlling system discharge of sewage, it is ensured that steam turbine safety, long-term operation.It addition, this utility model make use of the company of existing steam boiler to determine the pressure of flash distillation plant self in disintegrating system in waste pipe, sewer is carried, it is not necessary to newly-increased power lifting means, reduce processing cost.
For the high pressure steam boiler of a 220t/h, use steam boiler sewer automatic recycling system described in the utility model can reclaim the water yield about 6～7t/h, reclaim heat about 1400～1500kW.
Accompanying drawing explanation
Fig. 1 is the structural representation of steam boiler sewer automatic recycling system described in the utility model；
Wherein, 1-sewer refining system, 2-First Heat Exchanger, 3-the second heat exchanger, 4-flash tank with pressure, 5-atmospheric flashing tank, 6-oxygen-eliminating device.
Detailed description of the invention
For this utility model is better described, it is simple to understand the technical solution of the utility model, below this utility model is further described.But following embodiment is only simple example of the present utility model, not representing or limit rights protection scope of the present utility model, this utility model protection domain is as the criterion with claims.
This utility model specific embodiment part provides a kind of steam boiler sewer automatic recycling system, described system includes sewer refining system 1, automatic control system, First Heat Exchanger 2 and the second heat exchanger 3, the outlet of sewer of First Heat Exchanger 2 and the sewage inlet of the second heat exchanger 3 are connected, the outlet of sewer of the second heat exchanger 3 is connected with the Purified Water entrance of First Heat Exchanger 2 through sewer refining system 1, and the device outside the Purified Water of First Heat Exchanger 2 exports with automatic recycling system is connected.
Described sewer refining system 1 includes defecator and desalter.
Embodiment 1:
Present embodiments provide a kind of steam boiler sewer automatic recycling system, described system includes sewer refining system 1, automatic control system, First Heat Exchanger 2 and the second heat exchanger 3, the outlet of sewer of First Heat Exchanger 2 and the sewage inlet of the second heat exchanger 3 are connected, the outlet of sewer of the second heat exchanger 3 is connected with the Purified Water entrance of First Heat Exchanger 2 through sewer refining system 1, and the oxygen-eliminating device 7 outside the Purified Water of First Heat Exchanger 2 exports with automatic recycling system is connected.
Described sewer refining system 1 includes defecator and desalter.
The cold burden entrance of the second heat exchanger 3 with automatic recycling system outside the outlet of demineralized water pipe network be connected, the cold burden outlet of the second heat exchanger 3 with automatic recycling system outside demineralized water pipe network be connected.
The sewage inlet of First Heat Exchanger 2 with automatic recycling system outside the bottom discharge mouth of flash tank with pressure 5 be connected.
Embodiment 2:
Present embodiments providing the processing method of system described in embodiment 1, system described in embodiment 1 be applied in the high pressure steam boiler of a 220t/h, its described method of process is:
It is 160～250 DEG C that the company of steam boiler determines draining temperature after flash tank 5 with pressure processes, it enters First Heat Exchanger 2, heat exchange is carried out with the Purified Water from sewer refining system 1 in First Heat Exchanger 2, heat exchange to temperature is 100～150 DEG C, subsequently into the second heat exchanger 3, second heat exchanger 3 carries out heat exchange with the demineralized water from the outer demineralized water pipe network of system, heat exchange to temperature is 30～40 DEG C, enter sewer refining system 1, refining filtering and desalting processing is carried out in sewer refining system 1, heat exchange is carried out subsequently into First Heat Exchanger 2 and sewer, heat exchange to temperature is 60～95 DEG C, enter in oxygen-eliminating device 7 with the Purified Water after First Heat Exchanger 2 heat exchange and carry out deoxygenation and process and return again to steam boiler and recycle as make-up water.
Whole processing procedure is 4～20t/h by the automatic controlling system discharge of sewage.
Comparative example 1:
This comparative example 1 provides steam boiler sewer conventional processing systems in prior art, described system includes flash tank 4 with pressure, atmospheric flashing tank 5 and oxygen-eliminating device 6, this system is applied in the high pressure steam boiler of a 220t/h, it processes described method: the company of steam boiler determine draining and is directly entered in oxygen-eliminating device 6 and carries out deoxygenation after flash tank 4 with pressure process, and the sewage after deoxygenation processes due to further operation after also needing to carry out.
Processing method in comparative example 2 and comparative example 1, described in this utility model embodiment 2, in processing method, the water quality of Purified Water after sewer refining system 1 processes can reach water standard (drum boiler in " GB/T12145-2008 thermal power generation unit and apparatus of steam power plants Water Vapor Quality ", below 12.6MPa superheated steam pressure), it can directly return steam boiler after heat exchange deoxygenation processes and recycle as make-up water, and sewage quality after deoxygenation does not reaches reuse standard in comparative example 1, recycling can not be circulated, and the heat in its sewage also cannot be carried out reclaiming.
For the high pressure steam boiler of this 220t/h, use steam boiler sewer automatic recycling system relatively comparative example 1 described in the utility model can reclaim the water yield about 6～7t/h more, reclaim heat about 1400～1500kW.
Applicant states, this utility model illustrates method detailed of the present utility model by above-described embodiment, but this utility model is not limited to above-mentioned method detailed, does not i.e. mean that this utility model has to rely on above-mentioned method detailed and could implement.Person of ordinary skill in the field it should be understood that; to any improvement of the present utility model; the equivalence of raw material each to this utility model product is replaced and the interpolation of auxiliary element, concrete way choice etc., within the scope of all falling within protection domain of the present utility model and disclosure.
Claims (4)
1. a steam boiler sewer automatic recycling system, it is characterized in that, described system includes sewer refining system (1), automatic control system, First Heat Exchanger (2) and the second heat exchanger (3), the outlet of sewer of First Heat Exchanger (2) and the sewage inlet of the second heat exchanger (3) are connected, the outlet of sewer of the second heat exchanger (3) is connected through the Purified Water entrance of sewer refining system (1) with First Heat Exchanger (2), and the device outside the Purified Water of First Heat Exchanger (2) exports with automatic recycling system is connected.
Steam boiler sewer automatic recycling system the most according to claim 1, it is characterised in that described sewer refining system (1) includes defecator and desalter.
Steam boiler sewer automatic recycling system the most according to claim 1, it is characterised in that the cold burden entrance of the second heat exchanger (3) with automatic recycling system outside demineralized water pipe network be connected.
Steam boiler sewer automatic recycling system the most according to claim 1, it is characterized in that, the sewage inlet of First Heat Exchanger (2) with automatic recycling system outside the discharging opening of flash distillation plant, the combination that softens in grid, fresh water pipe network or recirculated water pipe network any one or at least two is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261804.1U CN205442936U (en) | 2016-03-31 | 2016-03-31 | Automatic recycle system of steam boiler sewer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261804.1U CN205442936U (en) | 2016-03-31 | 2016-03-31 | Automatic recycle system of steam boiler sewer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205442936U true CN205442936U (en) | 2016-08-10 |
Family
ID=56608802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620261804.1U Expired - Fee Related CN205442936U (en) | 2016-03-31 | 2016-03-31 | Automatic recycle system of steam boiler sewer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205442936U (en) |
-
2016
- 2016-03-31 CN CN201620261804.1U patent/CN205442936U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20210331 |