CN204924032U - Online accurate chemical cleaning device with zero emission of tube heat exchanger - Google Patents
Online accurate chemical cleaning device with zero emission of tube heat exchanger Download PDFInfo
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- CN204924032U CN204924032U CN201520419152.5U CN201520419152U CN204924032U CN 204924032 U CN204924032 U CN 204924032U CN 201520419152 U CN201520419152 U CN 201520419152U CN 204924032 U CN204924032 U CN 204924032U
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- Prior art keywords
- liquid
- heat exchanger
- marriage
- cleaning
- agitation tank
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- 238000004140 cleaning Methods 0.000 title claims abstract description 38
- 239000000126 substance Substances 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000013019 agitation Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 30
- 239000012530 fluid Substances 0.000 abstract description 15
- 239000000498 cooling water Substances 0.000 abstract description 10
- 238000002791 soaking Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000003245 coal Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- -1 other end opening Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Cleaning In General (AREA)
Abstract
The utility model discloses an accurate chemical cleaning device of online of shell and tube heat exchanger zero release, including positioner and join in marriage the fluid reservoir, be provided with the snaking and annotate the mouth on the positioner, join in marriage the fluid reservoir and connect the notes liquid valve through the filling pump, annotate the liquid valve and connect the snaking and annotate the mouth, the device still includes and return the liquid and irritate, returns the liquid tank and connects the filter, and the filter passes through the liquid valve that returns and connects the liquid valve, returns the liquid tank and is connected to the upper portion of joining in marriage the fluid reservoir through joining in marriage the fluid pump through the lower part, joins in marriage on fluid reservoir and the. The device recovers the chemical residual liquid after soaking and cleaning to the liquid return tank, avoids direct pollution caused by discharging into a circulating cooling water system, and realizes zero emission; the residual liquid in the liquid return tank can be used for the second time after centralized treatment, so that the cleaning cost is greatly reduced; the device can timely and thoroughly remove the dirt of the heat exchange tube, provides a new way for the high-concentration-ratio operation of circulating water, and has great water-saving potential.
Description
Technical field
The utility model belongs to industrial heat exchanger Chemical cleaning field, is specifically related to a kind of online precise chemical structure cleaning device of tubular heat exchanger zero-emission.
Background technology
Shell and tube water cooler is widely used in one of industrial department main auxiliary equipments such as power, chemical industry, oil and atomic energy, be responsible for various power, electrically, machinery and the important cooling task of chemical reaction equipment, the quality of its service behaviour has important impact to the safety of enterprise, economical operation.In diabatic process, in shell and tube water cooler, heat exchanger tube water side inwall is owing to easily forming incrustation scale and spot by the impact of heating and water quality, the performance of heat exchanger exerts an adverse impact, and how remove incrustation scale and spot is in time a major issue urgently to be resolved hurrily always.For power plant: condenser is exactly a kind of shell and tube water cooler: be made up of thousands of heat exchanger tubes, steam is walked outside pipe, cooling water is walked in pipe, because there being the existence of heat exchange, the salt in cooling water is constantly separated out in laser heating process, forms a large amount of incrustation scales and is attached on tube wall, vacuum in condenser is caused to decline, gross coal consumption rate rises, and cost of electricity-generating increases, and therefore reduces the efficiency of Turbo-generator Set.As condenser fouling about 0.5mm, vacuum can be made to drop to less than 85% by more than 90%, gross coal consumption rate is made to raise 15 ~ 20g/kWh, for the 300MW unit that a year running 7000h, rate of load condensate are 90%, standard coal about 28 ~ 380,000 t will be consumed every year more, if scale forming reaches 1mm, then not only many coal consumptions will exceed annual more than 50,000 tons, and will affect 10% exert oneself.In condenser, vacuum declines, and the exhaust temperature of steam turbine also can be made to raise, cause the distortion of low pressure (LP) cylinder, not only affects the economy that power plant runs, and also directly affects the security of operation of Turbo-generator Set.The utility model proposes for this problem, with minute quantity targetedly, specific chemical, online chemistry accurately a kind of technical method of cleaning is realized to incrustation scale in shell and tube water cooler and spot.
Below, for plant condenser, the method for similar on-line cleaning the utility model and power plant commonly used is carried out one and is compared:
1) condenser ball cleaning method (this method is power plant's standard configuration): then drop into a large amount of glueballs at condenser water, glueballs flows with recirculated water, pass through heat exchange tube of condenser, exchange heat pipe cleans, although it can play the effect of certain scale removal, but due to glueballs can not too greatly, too hard otherwise be difficult to by heat exchange tube of condenser, but too little, too soft, can descale effect be affected again, cause the glueballs rate of recovery to reduce.In addition, rubber ball cleaning method also depends on the flow velocity of recirculated water, winter, circulating water temperature was low, flow can not be large, otherwise can hot-well depression be produced, cause unit operation economy to decline. the decline of flow causes the decline of water flow velocity in heat exchanger tube, and rubber ball cleaning effect declines, condenser clean rate declines, and minimumly reaches 0.4 (design load 0.85).Do the system of recirculated water for water in employing, effect is just poorer, therefore how to make good use of the difficult problem that glueballs is also puzzlement power plant always.A large amount of articles about glueballs improvement can be found at more than CNK and just demonstrate this point, but same problem there will be again after running a period of time after transformation, rubber ball cleaning inherently Existence dependency recirculated water flow velocity is described, ball collecting rate and cleaning performance are difficult to satisfactory to both parties significant deficiency.
2) condenser in-site chemical cleaning method: now power plant capital without exception adds a large amount of chemicals (mainly acid, corrosion inhibiter and algicide are that neutralization discharge also will add a large amount of alkali), to stop the growth of heat exchanger tube fouling and algae substantially on the basis of dropping into rubber ball cleaning in condenser circulating water pool.Along with unit capacity increases, the circulating cooling water yield is increasing, 300MW unit is about 40000t/h, cooling tower circulating cooling evaporated quantity of water is about 2600t/h, 600MW, 1000MW unit is just more, in order to ensure scale inhibition, sterilization effect, maintain the low pH value of recirculated cooling water, chemical feeding quantity is well imagined, for 300MW unit, the expense of dosing in a year is about about 2,000,000 yuan.However, to employing in water (country have regulation electric power plant circulating water to adopt in water, to avoid adopting underground water) as the unit of circulating cooling water of power plant, effect is also not obvious, many units because of fouling seriously have to run duration carry out facing stop cleaning, to ensure the security of unit operation.
The subject matter of this cleaning method is: the chemical added, and is recycled recirculated water a large amount of in pond and dilutes, do not reach cleaning concentration far away to during heat exchange tube of condenser, has wasted a large amount of chemical.
Summary of the invention
Deficiency according to prior art exists: the utility model proposes that a kind of cleaning agent consumption is few, features high scale-removing effect, the online precise chemical structure descaling device of industrial shell and tube water cooler of zero-emission can be realized.
Technical solutions of the utility model realize by the following method:
A kind of online precise chemical structure cleaning device of tubular heat exchanger zero-emission, comprise positioner and Agitation Tank, described positioner is provided with snaking note mouth, described Agitation Tank connects liquid-filling valve by topping-up pump, described liquid-filling valve connects snaking note mouth, this device also comprises back liquid and fills with, described time flow container connects filter, described filter passes through back liquid valve and connects liquid-filling valve, described time flow container is connected to the top of Agitation Tank by dosing pump by bottom, described Agitation Tank and time flow container are respectively equipped with a PH tester.
This device also comprises back liquid pump, and described time liquid pump is connected in parallel with described time liquid valve.
Described Agitation Tank and time flow container are respectively equipped with a liquid level meter.
A blowoff valve is respectively equipped with in the bottom of described Agitation Tank and time flow container.
Described Agitation Tank is provided with agitator.
The utility model beneficial effect is:
1, the calcium in recirculated water, magnesium ion, incrustation scale is formed because heat exchange precipitate into tube wall, the chemical cleaning solution reaction of incrustation scale and injection generates the raffinate of calcium salt and magnesium salts, raffinate is recycled to back flow container, this process completes the desalination work of recirculated water, effectively improve circulating water quality, reduce sewer, considerably reduce rate of water make-up;
2, the chemical raffinate completing soaking and washing is recycled to back flow container, avoids the direct pollution entering recirculating cooling water system and cause, achieves zero-emission;
3, return the raffinate in flow container, through focusing on and can carrying out secondary use, considerably reduce cleaning cost;
4, the present invention can remove the dirt of heat exchanger tube in time thoroughly, provides new approach, have great water saving potential for recirculated water high concentration ratio runs.
Accompanying drawing explanation
Fig. 1 is the utility model device schematic diagram;
1-positioner, 2-snaking note mouth, 3-Agitation Tank, 4-topping-up pump, 5-return flow container, 6-filter, 7-return liquid valve, 8-dosing pump, 9-PH tester, 10-return liquid pump, 11-liquid level meter, 12-blowoff valve, 13-agitator, 14-liquid-filling valve, 15-condenser, 16-heat exchanger tube, 17-dosing valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, by specific embodiment, technical solutions of the utility model are described further.
As shown in Figure 1, a kind of online accurately cleaning device of tubular heat exchanger zero-emission, this device comprises Agitation Tank 3, Agitation Tank 3 is provided with for the agitator 13 of stirring and washing liquid with for observing the liquid level meter 11 of water level inside, PH tester 9 for detecting cleaning fluid acid-base value is also installed, the bottom of Agitation Tank 3 connects topping-up pump 4, topping-up pump 4 connects liquid-filling valve 14, cleaning fluid in Agitation Tank 3 is injected in heat exchanger tube 16 by the snaking note mouth 2 on the positioner 1 in condenser 15 by topping-up pump 4, cooling water in heat exchanger tube 16 is driven away by cleaning fluid, after cleaning fluid fills heat exchanger tube 16, snaking note mouth 2 is by heat exchanger tube 16 port closed, cooling water is avoided to enter and the leaking outside of cleaning fluid, according to the degree of dirt in heat exchanger tube 16, in heat exchanger tube 16, different soak times is set to cleaning fluid, dirt is serious, can soak time longer, after the cleaning and dipping time reaching setting, open back liquid valve 7, rely on the pressure of condenser 15 inside, cleaning raffinate after immersion in heat exchanger tube 16 all can be entered into filter 6 by time liquid valve 7 to filter, enter into back in flow container 5 after large the material such as silt are wherein filtered out, now, cooling water enters into again by cleaned heat exchanger tube 16.Return cleaning raffinate in flow container 5 after the detection of PH tester 9, open dosing valve 17 after reaching initial wash liquid pH value after adding corresponding reagent, then be injected in Agitation Tank 3 by dosing pump 8 by cleaning fluid, initial wash liquid is acidic cleaning solution.If the insufficient pressure in condenser 15, now, closing back liquid valve 7, open back liquid pump 10, raffinate extraction will be cleaned by returning liquid pump 10.Agitation Tank 3 and return bottom flow container 5 and be provided with blowoff valve 12, can be regular to Agitation Tank 3 and return flow container 5 blowdown and cleaning.
Multiple or many groups heat exchanger tube can be carried out by this device to clean.
Principle of the present utility model is for adopting equation plug flow principle, and namely when fluid is liquid, other end opening, injection end is closed, and fluid can not flow out from openend.Utilize this principle, cleaning fluid can not flow out at heat exchanger tube 16, and cleaning raffinate can all be extracted out from heat exchanger tube 16.
Claims (5)
1. the online precise chemical structure cleaning device of a tubular heat exchanger zero-emission, comprise positioner (1) and Agitation Tank (3), described positioner (1) is provided with snaking note mouth (2), described Agitation Tank (3) connects liquid-filling valve (14) by topping-up pump (4), described liquid-filling valve (14) connects snaking note mouth (2), it is characterized in that: this device also comprises back flow container (5), described time flow container (5) connects filter (6), described filter (6) passes through back liquid valve (7) and connects liquid-filling valve (14), described time flow container (5) is connected to the top of Agitation Tank (3) by dosing pump (8) by bottom, described Agitation Tank (3) and time flow container (5) are respectively equipped with a PH tester (9).
2. a kind of device according to claim 1, it is characterized in that: this device also comprises back liquid pump (10), described time liquid pump (10) is connected in parallel with described time liquid valve (7).
3. a kind of device according to claim 1 or 2, is characterized in that: described Agitation Tank (3) and time flow container (5) are respectively equipped with a liquid level meter (11).
4. a kind of device according to claim 1 or 2, is characterized in that: a blowoff valve (12) is respectively equipped with in the bottom of described Agitation Tank (3) and time flow container (5).
5. a kind of device according to claim 1, is characterized in that: described Agitation Tank (3) is provided with agitator (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419152.5U CN204924032U (en) | 2015-06-17 | 2015-06-17 | Online accurate chemical cleaning device with zero emission of tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419152.5U CN204924032U (en) | 2015-06-17 | 2015-06-17 | Online accurate chemical cleaning device with zero emission of tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924032U true CN204924032U (en) | 2015-12-30 |
Family
ID=54973149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520419152.5U Expired - Fee Related CN204924032U (en) | 2015-06-17 | 2015-06-17 | Online accurate chemical cleaning device with zero emission of tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924032U (en) |
-
2015
- 2015-06-17 CN CN201520419152.5U patent/CN204924032U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160516 Address after: 221000, Xuzhou Economic Development Zone, Jiangsu Province, on the east side of No. six road (Jingshan Road, 55) Patentee after: Xuzhou BiCi Intelligent Technology Co., Ltd. Address before: Unit No. 4 West Copper Mt. District 221000 Jiangsu Shengquan Garden City in Xuzhou Province, Room 102 Patentee before: Peng Wei Patentee before: Chen Ning |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20190617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |