CN207566955U - A kind of thermal power plant MGGH closed circle water systems - Google Patents
A kind of thermal power plant MGGH closed circle water systems Download PDFInfo
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- CN207566955U CN207566955U CN201721583611.9U CN201721583611U CN207566955U CN 207566955 U CN207566955 U CN 207566955U CN 201721583611 U CN201721583611 U CN 201721583611U CN 207566955 U CN207566955 U CN 207566955U
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- removing device
- iron removing
- magnet iron
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Abstract
A kind of thermal power plant MGGH closed circle water systems,Including permanent-magnet iron removing device,The permanent-magnet iron removing device is connected in parallel on by removing iron pipe conduit on the main pipe straight section of MGGH cooler outlets,Described remove is equipped on iron pipe conduit and main pipe straight section equipped with valve,The bottom of the permanent-magnet iron removing device is equipped with sewage draining exit,Outer tube is equipped in the permanent-magnet iron removing device,The outer tube is sleeved on the outside of the Permanentmagnet bar of permanent-magnet iron removing device,Permanentmagnet bar is isolated with the bore seal of permanent-magnet iron removing device,The Permanentmagnet bar is is removably mounted in permanent-magnet iron removing device,Present apparatus recirculated water reaches more than 90% by magnetic metal oxide removal rate after permanent-magnet iron removing device,When metal oxide adsorbs to a certain degree,It can be by cutting bypass operation online by metal oxide discharge system,Effectively playing prevents heater from blocking,The effect that efficiency reduces.
Description
Technical field
The utility model is related to a kind of thermal power plant MGGH closed circle water systems.
Background technology
To adapt to the environmental requirement of thermal power plant minimum discharge, it is ultralow that thermal power plant carried out desulphurization system in recent years
Discharge engineering is transformed, wherein transforming former desulphurization system GGH as MGGH, for current main flume system reform scheme, (MGGH is pipe
Formula heat medium water smoke heat exchanging system), using gas cooler and flue gas heater is separately provided, utilize heat medium water closed cycle reality
Flue gas heat exchange is now physically isolated, neat stress is heated from smoke stack emission using former flue gas heat, to reduce corruption of the neat stress to chimney
Erosion and the generation for reducing white cigarette.
Existing desulfurization MGGH systems gas cooler uses ND steel material H-type fin tube heat exchangers, and installation form is mould
14 layer arrangements of blockization point；Gas cooler uses fluoroplastics material U-tube heat exchanger, and installation form is installed side by side for 6 groups；Cycle
Water-system pipeline uses 20# seamless steel pipes.System is exchanged heat using closed cycle water, non-online design blowdown apparatus, therefore
It finds to generate a large amount of black powder metal oxides in circulation in desulfurization MGGH system gas cooler operational process,
Black powder part is attached to heater fluoroplastics tube wall, and unattached part is because quality is larger, heater velocity of medium is low, easily
It is deposited on the U-shaped crook of fluoroplastics duct bottom and blocks pipeline, heater heat exchange efficiency reduces by more than 10%.Through spectrum analysis black
Powder main component is：Fe3O4、Cr2O3, the metal oxides such as CuO, NiO, metal oxide is cleared up to heater module online
Up to (300-400) kg/ groups.It is system metal pipe internal wall there are electrochemical corrosion to analyze reason, can not stopping pregnancy in operational process
Metal oxide is given birth to, basket filter can not filter this product in system, and no online blowdown closed cycle longtime running causes
Heater tube bank blocks, and heat exchange efficiency reduces.By technical staff's analysis because metal oxide powder grain size is small, traditional is basket
Filter can not meet system operation demand, and recirculated water running temperature is high in system, pressure is high, closed cycle, to system
Online blowdown apparatus is added to put forward higher requirements.
Utility model content
The utility model overcomes deficiency existing for above-mentioned technology and a kind of design is simple, and easy to operate, environmental suitability is strong,
Running resistance is small, and improvement cost rather moderate, later maintenance cost is low, can realize a kind of thermal power plant MGGH of efficient longtime running
Closed circle water system.
A kind of thermal power plant MGGH closed circle water systems, including permanent-magnet iron removing device, the permanent-magnet iron removing device is by removing
Iron pipe conduit is connected in parallel on the main pipe straight section of MGGH cooler outlets, and described remove is equipped on iron pipe conduit and main pipe straight section equipped with valve
Door, the bottom of the permanent-magnet iron removing device are equipped with sewage draining exit, outer tube, the housing pipe sleeve are equipped in the permanent-magnet iron removing device
On the outside of the Permanentmagnet bar of permanent-magnet iron removing device, Permanentmagnet bar is isolated with the bore seal of permanent-magnet iron removing device, the Permanentmagnet bar
To be removably mounted in permanent-magnet iron removing device.MGGH cooler outlets recirculated water will be in recirculated water through permanent-magnet iron removing device
Metal oxide adsorbs, then recirculated water after filtering is entered heater, by permanent-magnet iron removing device by the magnetic in recirculated water
Property metal oxide removal, by setting outer tube so that Permanentmagnet bar is not in direct contact with system circulating water, such permanent magnetism deironing
Device bar magnet adsorbs a certain amount of oxide, it is only necessary to take out Permanentmagnet bar, the metal oxide for being adhered to outer tube can be from row
Dirty mouth discharge, present apparatus improvement expenses are moderate, run without being powered, operation expense is low, stabilised efficiency, longtime running permanent magnetism
Stick magnetic flux drop-out value very little, strong environmental adaptability do not require system pressure.
The Permanentmagnet bar should be not less than 150 DEG C of ndfeb magnet for temperature in use.Ensure that Permanentmagnet bar adapts to recirculated water
Temperature.
The Permanentmagnet bar magnetic flux should be not less than 8000 Gausses.So as to reach higher de-ironing efficiency.
Backwash water system is equipped in the permanent-magnet iron removing device.So as to which flushing water can be utilized after magnetic is unloaded by oxide
Discharge system realizes online blowdown, so as to reduce use cost.
In conclusion the present apparatus realizes the online blowdown of MGGH closed circle water systems, design letter using permanent-magnet iron removing device
Single, easy to operate, environmental suitability is strong, and running resistance is small, and improvement cost is low, and later maintenance cost is low, can realize efficiently long-term
Operation etc..Water running pipeline is recycled by valve transfer in operation, the work(for realizing online blowdown is rinsed using backwash water system
Can, without shutdown system, system shutdown, put into operation no-harass switch, and present apparatus recirculated water passes through magnetic metal after permanent-magnet iron removing device
Oxide removal efficiency reaches more than 90%, when metal oxide absorption to a certain degree, can by cut bypass operation online by metal
Oxide discharge system effectively plays the effect for preventing that heater from blocking, efficiency reduces.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
In conjunction with attached drawing, the technology contents of the utility model are described further.
As shown in Figure 1, a kind of thermal power plant MGGH closed circle water systems, including permanent-magnet iron removing device 1, the permanent magnetism deironing
Device 1 is connected in parallel on by removing iron pipe conduit 2 on the main pipe straight section 3 of MGGH cooler outlets 4, described to remove iron pipe conduit 2 and main pipe straight section 3
On be equipped with equipped with valve, the bottom of the permanent-magnet iron removing device 1 is equipped with sewage draining exit 5, is equipped in the permanent-magnet iron removing device 1 outer
Casing, the outer tube is sleeved on the outside of the Permanentmagnet bar of permanent-magnet iron removing device, and the inner cavity of Permanentmagnet bar and permanent-magnet iron removing device is close
It insulates from the Permanentmagnet bar is is removably mounted in permanent-magnet iron removing device.4 recirculated water of MGGH cooler outlets is removed through permanent magnetism
Metal oxide in recirculated water is adsorbed, then recirculated water after filtering is entered MGGH heaters by iron device 1, passes through permanent magnetism
Deironing apparatus 1 by recirculated water magnetic metal oxide remove, by setting outer tube so that Permanentmagnet bar not with system circulation
Water is in direct contact, and such permanent-magnet iron removing device bar magnet adsorbs a certain amount of oxide, it is only necessary to take out Permanentmagnet bar, be adhered to housing
The metal oxide of pipe can be discharged from sewage draining exit, and present apparatus improvement expenses are moderate, be run without being powered, operation expense
Low, stabilised efficiency, longtime running Permanentmagnet bar magnetic flux drop-out value very little, strong environmental adaptability do not require system pressure.
The Permanentmagnet bar should be not less than 150 DEG C of ndfeb magnet for temperature in use.Ensure that Permanentmagnet bar adapts to the temperature of recirculated water.It is described
Permanentmagnet bar magnetic flux should be not less than 8000 Gausses.So as to reach higher de-ironing efficiency.It is equipped in the permanent-magnet iron removing device anti-
Rinse water system 6.So as to utilize flushing water that oxide discharge system is realized online blowdown, so as to reduce after magnetic is unloaded
Use cost.
Claims (4)
1. a kind of thermal power plant MGGH closed circle water systems, it is characterised in that：Including permanent-magnet iron removing device, the permanent magnetism deironing dress
It puts and is connected in parallel on the main pipe straight section of MGGH cooler outlets by removing iron pipe conduit, described remove is equipped on iron pipe conduit and main pipe straight section
Equipped with valve, the bottom of the permanent-magnet iron removing device is equipped with sewage draining exit, and outer tube is equipped in the permanent-magnet iron removing device, described outer
Casing is sleeved on the outside of the Permanentmagnet bar of permanent-magnet iron removing device, and Permanentmagnet bar is isolated with the bore seal of permanent-magnet iron removing device, described
Permanentmagnet bar is is removably mounted in permanent-magnet iron removing device.
2. thermal power plant MGGH closed circle water systems according to claim 1, it is characterised in that：The Permanentmagnet bar is uses
Temperature should be not less than 150 DEG C of ndfeb magnet.
3. thermal power plant MGGH closed circle water systems according to claim 2, it is characterised in that：The Permanentmagnet bar magnetic flux
8000 Gausses should be not less than.
4. thermal power plant's MGGH closed circle water systems according to one of claims 1 to 3, it is characterised in that：The permanent magnetism
Backwash water system is equipped in deironing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583611.9U CN207566955U (en) | 2017-11-23 | 2017-11-23 | A kind of thermal power plant MGGH closed circle water systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583611.9U CN207566955U (en) | 2017-11-23 | 2017-11-23 | A kind of thermal power plant MGGH closed circle water systems |
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| CN207566955U true CN207566955U (en) | 2018-07-03 |
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| CN201721583611.9U Active CN207566955U (en) | 2017-11-23 | 2017-11-23 | A kind of thermal power plant MGGH closed circle water systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107879436A (en) * | 2017-11-23 | 2018-04-06 | 大唐湘潭发电有限责任公司 | A kind of thermal power plant MGGH closed circle water systems |
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2017
- 2017-11-23 CN CN201721583611.9U patent/CN207566955U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107879436A (en) * | 2017-11-23 | 2018-04-06 | 大唐湘潭发电有限责任公司 | A kind of thermal power plant MGGH closed circle water systems |
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