CN204758459U - Experimental device for simulation wet flue gas desulfurization chimney inner wall flue gas dew point corrode - Google Patents
Experimental device for simulation wet flue gas desulfurization chimney inner wall flue gas dew point corrode Download PDFInfo
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- CN204758459U CN204758459U CN201520365542.9U CN201520365542U CN204758459U CN 204758459 U CN204758459 U CN 204758459U CN 201520365542 U CN201520365542 U CN 201520365542U CN 204758459 U CN204758459 U CN 204758459U
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- flue gas
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Abstract
The utility model provides an experimental device for simulation wet flue gas desulfurization chimney inner wall flue gas dew point corrode, the system takes place for the flue gas including linking to each other, the dew point corrosion system, residual air absorption system, flue gas emergence system includes digital display control by temperature change electrical heating cover and the porous evaporation bottle of large capacity that links to each other with it, set up a plurality of interfaces on the porous evaporation bottle of large capacity, installation fluid infusion pipe in the interface, steam pipe, the dew point corrosion system includes the mobile case of flue gas, the mobile roof portion of flue gas installs the semiconductor refrigeration piece, the sample flitch is connected to the semiconductor refrigeration piece, radiator fan, the sample is pasted to sample flitch lower part, the tank wall upper shed of the mobile case of flue gas, set up the air outlet duct who connects residual air absorption system in the opening, air outlet duct is connected to in the liquid of residual air absorption system's residual air absorption bottle. The utility model discloses selected digital display control by temperature change electrical heating cover for use, can adjust work power control in real time and corrode quantity and the speed that steam produced, simultaneously the utility model discloses a semiconductor refrigeration piece, refrigeration are invariable rapidly.
Description
Technical field
The utility model relates to dewpoint corrosion device field, particularly relates to a kind of experimental provision of simulating wet desulphurization chimney inwall dewpoint corrosion.
Background technology
Most often Wet Flue Gas Desulfurization Technique is applied in current coal steam-electric plant smoke process, and this method is higher to the SO2 removal efficiency in flue gas, but the SO to vigorous erosion
3, the material such as HCl, HF removal efficiency not high, to cause in the flue gas condensing liquid after desulfurization, containing a certain amount of aggressive substances, there is " height " chemical corrosion grade.Dewpoint corrosion is very serious to the corrosion of chimney lining, investigates 226 desulfuration chimneys that are newly-built in nearly 5 years or reconstruction and finds, the damage in various degree that had 10 kinds to occur in 13 kinds of Corrosion prevention scheme.As can be seen here, suitable chimney corrosion-proof lining material is adopted to be the key ensureing that chimney safety and effectivity runs.Therefore, build a kind of experimental provision of simulating chimney smoke dew point corrosion, for the anti-dewpoint corrosion performance evaluating chimney lining material provides laboratory facilities easily, the selection solving chimney lining material is had to the meaning of certain engineering.
The patent No. be CN101929945A to patent discloses in a kind of yellow phosphoric tail gas phosphorus to the low-temperature dew point corrosion experiment method of boiler material and device.Material is immersed in phosphoric acid solution by this device, adopts weight-loss method to weigh its dew-point corrosion resistant performance, have ignored the feature of dew point corrosion---and material is the corrosion under condensed fluid thin liquid film state, is not inconsistent with the dew point corrosion operating mode of reality.The patent No. is propose in the file of CN101251467A and CN101876622A to adopt sulphuric dioxide and sulfur trioxide gas and water vapor to be mixed to form corrosion of sulfuric acid at dew point, its Corrosion Types is very proper with actual dew point corrosion, but there is very big-difference in the composition of the composition of etchant solution and chimney smoke condensed fluid, the principal ingredient of coal steam-electric plant smoke condensed fluid, except sulfuric acid, also has the multiple acid solutions such as nitric acid, hydrochloric acid, phosphoric acid.CN102696438A patent discloses a kind of dew point corrosion experiment device that can realize electro-chemical test, it can adopt electrochemical means to carry out the corrosive nature of monitoring and evaluation material, enrich research means, but because sample is together with electrode package, Area of Sample is limited, comprehensive not to the sign of material dew point corrosion performance.
Therefore, be under the development trend of main Energy Situation and environmental protection in China's thermal power generation, it is the condition precedent ensureing the coordinated development of power industry economy and environment that the safety and effectivity of chimney runs, needing that development is a set of badly can test material dew-point corrosion resistant performance, simple experimental provision in wet desulphurization chimney flue gas, for colleges and universities and institute's Evaluating and screening anti-corrosion material provide convenient.
Utility model content
The purpose of this utility model is to provide a kind of experimental provision of simulating wet desulphurization chimney inwall dewpoint corrosion, corresponding solution can be configured according to the composition of chimney smoke and produce smoke modelling steam, simulation inner wall of stack thin liquid film dew point corrosion environment, the anti-dewpoint corrosion performance of test various sample material.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
The experimental provision of simulation wet desulphurization chimney inwall dewpoint corrosion, comprise the flue gas generation systems be connected successively, dew point corrosion system, residual air absorption system, described flue gas generation systems comprises digital display temperature-control electric heating cover, Large Copacity porous evaporation bottle is set with on the top of digital display temperature-control electric heating cover, Large Copacity porous evaporation bottle arranges multiple interface, the fluid infusion conduit of fluid infusion in bottle is installed in interface, connect the steam lead of dew point corrosion system, dew point corrosion system comprises flow of flue gas case, steam lead is connected in flow of flue gas case, flow of flue gas box top is provided with semiconductor chilling plate, sample pasting board is posted in semiconductor chilling plate bottom, top is provided with radiator fan, sample is pasted in sample pasting board bottom, devil liquor recovery groove is set bottom flow of flue gas case, the tank wall upper shed of flow of flue gas case, the outtake tube connecting residual air absorption system is set in opening, residual air absorption system comprises residual air absorption bottle, outtake tube is connected in the liquid of residual air absorption bottle.
The thermometer of vapor (steam) temperature in installation testing bottle is gone back in the interface of described Large Copacity porous evaporation bottle.
The steam lead installed in the interface of described Large Copacity porous evaporation bottle is no less than one.
Described residual air absorption bottle is no less than one, by grass tube assembled in series between them, the catheter opening of grass tube in previous residual air absorption bottle is in the top on-liquid part of residual air absorption bottle, grass tube is in lower liquid part at the catheter opening of a rear residual air absorption bottle, and outtake tube connects first residual air absorption bottle.
Between semiconductor chilling plate and sample pasting board by thermal conductive silicon gluing and, between semiconductor chilling plate and radiator fan by thermal conductive silicon gluing and.
Described semiconductor chilling plate and radiator fan are integrated separate unit, and this integrated separate unit is no less than one.
The utility model has selected digital display temperature-control electric heating cover, the quantity that operating power control corrosion rate steam can be regulated in real time to produce and speed, the utility model adopts semiconductor chilling plate simultaneously, freezes constant rapidly, and can be carried out the condensing temperature on adjusting sample surface by the quantity controlling cooling piece.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Wherein, 1-digital display temperature-control electric heating cover; 2-Large Copacity porous evaporation bottle; 3-thermometer; 4-fluid infusion conduit; 5-steam lead; 6-devil liquor recovery groove; 7-radiator fan; 8-semiconductor chilling plate; 9-sample pasting board; 10-sample; 11-flow of flue gas case; 12-outtake tube; 13-residual air absorption bottle.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the utility model is described in further detail.
A kind of experimental provision of simulating wet desulphurization chimney inwall dewpoint corrosion that the utility model provides, comprise the flue gas generation systems, dew point corrosion system, the residual air absorption system that are connected successively, flue gas generation systems comprises digital display temperature-control electric heating cover 1, Large Copacity porous evaporation bottle 2 is set with on the top of digital display temperature-control electric heating cover 1, splendid attire etchant solution in Large Copacity porous evaporation bottle 2, etchant solution can be changed, the composition of corrosive vapor can be changed by the composition changing solution in evaporative flask, meet the needs of heterogeneity chimney smoke dew point corrosion experiment.Large Copacity porous evaporation bottle 2 is provided with multiple interface, the fluid infusion conduit 4 of fluid infusion in bottle is installed in interface, fluid infusion can be carried out to concentrated etchant solution timely.In interface, thermometer 3 can also be installed simultaneously, measure vapor (steam) temperature in real time by thermometer 3, so that judge whether to need the concentrated etchant solution of heating.The steam lead 5 connecting flow of flue gas case 11 in dew point corrosion system is also housed in interface, and steam lead 5 is no less than one, can provide even, sufficient corrosive vapor environment for sample.
Dew point corrosion system comprises flow of flue gas case 11, and flow of flue gas case adopts organic glass preparation, can observe directly lime set film forming situation and the distribution of steam situation on sample 10 surface.Flow of flue gas case 11 top is provided with semiconductor chilling plate 8, sample pasting board 9 is posted in semiconductor chilling plate 8 bottom, top is provided with radiator fan 7, sample 10 is pasted in sample pasting board 9 bottom, devil liquor recovery groove 6 is set bottom flow of flue gas case 11, the tank wall upper shed of flow of flue gas case 11, arranges the outtake tube 12 connecting residual air absorption system in opening.Dispelled the heat by radiator fan 7 in semiconductor chilling plate 8 side, opposite side is then pasted onto on sample pasting board 9, for sample 10 provides low temperature environment to be convenient to steam-condensation film forming.Semiconductor chilling plate and the integrated separate unit of radiator fan, this integrated separate unit is no less than one, can the number of direct adjustment unit as required, thus reaches the object of different condensing temperature, carrys out the condensing temperature on Control Assay surface.Between semiconductor chilling plate 8 and sample pasting board 9 by thermal conductive silicon gluing and, between semiconductor chilling plate 8 and radiator fan 7 by thermal conductive silicon gluing and, good heat conductivity can be ensured between the two.The material of sample pasting board 9 can be replaced with the material identical with sample 10 as required, thus avoids the bimetallic corrosion between sample pasting board and sample.
Residual air absorption system comprises residual air absorption bottle 13, and outtake tube 12 is connected in the liquid of residual air absorption bottle 13.Residual air absorption bottle 13 is no less than one, by grass tube assembled in series between them, the catheter opening of grass tube in previous residual air absorption bottle is in the top on-liquid part of residual air absorption bottle, grass tube is in lower liquid part at the catheter opening of a rear residual air absorption bottle, outtake tube 12 connects first residual air absorption bottle, is no less than the high concentration neutralization solution that in the residual air absorption bottle of, splendid attire is different simultaneously.The composition of high concentration neutralization solution can absorb according to the corresponding solution of composition splendid attire of flue gas, thus avoids corrosive vapor to environment and the harm to human body.
During utility model works, etchant solution in digital display temperature control electric heating mantle heats Large Copacity porous evaporation bottle, etchant solution is made to produce steam, steam enters the flow of flue gas case of dew point corrosion system along wireway, and corrosive vapor rises to the condensation of specimen surface chance and forms thin liquid film formation dew point corrosion in flow of flue gas case.Unnecessary condensed fluid drippage or along flow of flue gas tank wall downstream to the devil liquor recovery groove bottom flow box, the gas do not reacted enters residual air absorption system through the outlet of flow of flue gas case, through series connection multiple absorption bottles in alkali lye in and absorb, specifically, corrosive vapor enters the liquid of first residual air absorption bottle from outtake tube, carry out neutralization and sponge a part of vapor composition, the steam that cannot absorb enters into next residual air absorption bottle by grass tube, again absorb, successively until last residual air absorption bottle.Corrosive vapor is upper entering and lower leaving by the mode of flow of flue gas case, ensure that wet-hot steam fully stops at specimen surface, and the vapour density cooled down increases sinks, and discharges from end opening.In the process, semiconductor chilling plate one side is freezed as sample provides low temperature, and one side heat release is responsible for cooling by radiator fan.Rapidly, constant temperature is constant, can provide stable low-temperature receiver for dew point corrosion for semiconductor chilling plate refrigeration.
The utility model tool has the following advantages:
1. the utility model has selected digital display temperature-control electric heating cover, the quantity that operating power control corrosion rate steam can be regulated in real time to produce and speed.
2. the utility model according to the composition of the flue gas of wet desulphurization chimney, can configure the sulfuric acid of certain proportion concentration, nitric acid, hydrochloric acid and phosphoric acid mixed solution, is heated to fluidized state and produces smoke modelling steam formation dew point corrosion environment.
3. the utility model adopts semiconductor chilling plate, freezes constant rapidly, and can be carried out the condensing temperature on adjusting sample surface by the quantity controlling cooling piece.
4. the utility model can adopt the sample pasting board with sample same material, avoids the bimetallic corrosion of foreign material in corrosive vapor.
5. the utility model can the exposed area of adjusting sample material greatly, the more fully dew-point corrosion resistant ability of test material.
Claims (6)
1. simulate the experimental provision of wet desulphurization chimney inwall dewpoint corrosion, it is characterized in that: comprise the flue gas generation systems be connected successively, dew point corrosion system, residual air absorption system, described flue gas generation systems comprises digital display temperature-control electric heating cover (1), Large Copacity porous evaporation bottle (2) is set with on the top of digital display temperature-control electric heating cover (1), Large Copacity porous evaporation bottle (2) arranges multiple interface, the fluid infusion conduit (4) of fluid infusion in bottle is installed in interface, connect the steam lead (5) of dew point corrosion system, dew point corrosion system comprises flow of flue gas case (11), steam lead (5) is connected in flow of flue gas case (11), flow of flue gas case (11) top is provided with semiconductor chilling plate (8), sample pasting board (9) is posted in semiconductor chilling plate (8) bottom, top is provided with radiator fan (7), sample (10) is pasted in sample pasting board (9) bottom, flow of flue gas case (11) bottom arranges devil liquor recovery groove (6), the tank wall upper shed of flow of flue gas case (11), the outtake tube (12) connecting residual air absorption system is set in opening, residual air absorption system comprises residual air absorption bottle (13), outtake tube (12) is connected in the liquid of residual air absorption bottle (13).
2. the experimental provision of simulation wet desulphurization chimney inwall dewpoint corrosion according to claim 1, is characterized in that: the thermometer (3) going back vapor (steam) temperature in installation testing bottle in the interface of described Large Copacity porous evaporation bottle (2).
3. the experimental provision of simulation wet desulphurization chimney inwall dewpoint corrosion according to claim 1, is characterized in that: the steam lead (5) installed in the interface of described Large Copacity porous evaporation bottle (2) is no less than one.
4. the experimental provision of simulation wet desulphurization chimney inwall dewpoint corrosion according to claim 1, it is characterized in that: described residual air absorption bottle (13) is no less than one, by grass tube assembled in series between them, the catheter opening of grass tube in previous residual air absorption bottle is in the top on-liquid part of residual air absorption bottle, grass tube is in lower liquid part at the catheter opening of a rear residual air absorption bottle, and outtake tube (12) connects first residual air absorption bottle.
5. the experimental provision of simulation wet desulphurization chimney inwall dewpoint corrosion according to claim 1, it is characterized in that: between semiconductor chilling plate (8) and sample pasting board (9) by thermal conductive silicon gluing and, between semiconductor chilling plate (8) and radiator fan (7) by thermal conductive silicon gluing with.
6. the experimental provision of simulation wet desulphurization chimney inwall dewpoint corrosion according to claim 1, it is characterized in that: described semiconductor chilling plate (8) and radiator fan (7) are integrated separate unit, and this integrated separate unit is no less than one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365542.9U CN204758459U (en) | 2015-06-01 | 2015-06-01 | Experimental device for simulation wet flue gas desulfurization chimney inner wall flue gas dew point corrode |
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| CN201520365542.9U CN204758459U (en) | 2015-06-01 | 2015-06-01 | Experimental device for simulation wet flue gas desulfurization chimney inner wall flue gas dew point corrode |
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| CN204758459U true CN204758459U (en) | 2015-11-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290121A (en) * | 2015-06-01 | 2017-01-04 | 郑州科源耐磨防腐工程有限公司 | A kind of experimental provision simulating wet desulphurization chimney inwall dewpoint corrosion |
| CN107807087A (en) * | 2017-11-14 | 2018-03-16 | 湖南工业大学 | Corrosion experimental device and its corrosion experiment method |
-
2015
- 2015-06-01 CN CN201520365542.9U patent/CN204758459U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290121A (en) * | 2015-06-01 | 2017-01-04 | 郑州科源耐磨防腐工程有限公司 | A kind of experimental provision simulating wet desulphurization chimney inwall dewpoint corrosion |
| CN107807087A (en) * | 2017-11-14 | 2018-03-16 | 湖南工业大学 | Corrosion experimental device and its corrosion experiment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 451162 No.27, Huxin Ring Road, west of Huxin Ring Road and north of Huxin 1st Road, Longzihu Huxin Island, Zhengdong New District, Zhengzhou City, Henan Province Patentee after: Zhengzhou Huadian Energy Technology Co.,Ltd. Patentee after: HUADIAN ZHENGZHOU MECHANICAL DESIGN INSTITUTE Co.,Ltd. Patentee after: INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES Address before: 451162 north of the middle section of Hangkong Avenue, Xuedian Town, Xinzheng City, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU KEYUAN WEAR RESISTANT ANTICORROSION ENGINEERING Co.,Ltd. Patentee before: HUADIAN ZHENGZHOU MECHANICAL DESIGN INSTITUTE Co.,Ltd. Patentee before: INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES |
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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |