CN108982186A - A kind of alloy and detection method for tubular steam boiler water quality detection - Google Patents
A kind of alloy and detection method for tubular steam boiler water quality detection Download PDFInfo
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- CN108982186A CN108982186A CN201811037915.4A CN201811037915A CN108982186A CN 108982186 A CN108982186 A CN 108982186A CN 201811037915 A CN201811037915 A CN 201811037915A CN 108982186 A CN108982186 A CN 108982186A
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Abstract
It is whether exceeded for detecting tubular steam boiler water quality the present invention provides a kind of alloy for tubular steam boiler water quality detection.A kind of alloy for tubular steam boiler water quality detection, by weight percentage, including magnesium 80-90%, aluminium 0.5-1%, zinc 4-8%, copper 5-10%, and the alloy is porous alloy structure.The method for detecting tubular steam boiler water quality using above-mentioned alloy are as follows: choose the water sample for having measured water quality parameter, alloy is added, heat certain time, measure weight change, the cosmetic variation of magnesium alloy, then measure exceeded water to Corrosion Behaviors of Magnesium Alloys degree.Then water quality to be measured is chosen, to Corrosion Behaviors of Magnesium Alloys, then directly judges whether water quality to be measured may be exceeded.Alloy through the invention detects tubular steam boiler water, simply can directly judge that whether exceeded water quality is fine or not and, and it is accurate to be simple and efficient.
Description
Technical field
The present invention relates to a kind of methods of boiler water quality detection, more particularly to one kind to be used for tubular steam boiler water quality inspection
The alloy and detection method of survey.
Background technique
Boiler is important thermal powerplant, is widely used in each side such as factory power, building and heating, people's lives
Face, it is large number of.Boiler realizes that the most common carrier of thermal power transmitting is water (including water vapour), and water absorbs in boiler
The thermal energy of fuel combustion, is changed into the water or water vapour of high temperature, to realize thermal energy transmitting or power acting.For boiler operatiopn
Safety and energy-saving run, boiler feed water need dosing to reduce corrosion and fouling, and the water of boiler internal needs frequent blowdown
To reduce impurity content.Standard GB/T/T1576 " Industrial Boiler water quality " defines qualified Industrial Boiler water quality indicator, such as
Fruit water quality is not inconsistent standardization regulation, and boiler will be in dangerous or not energy-efficient operating status.And in industrial boiler operation, by
It being constantly consumed in original boiler water, is continuously added with stylish supplement water, such water system is constantly in dynamic change,
Boiler water quality will control in standard GB/T/T1576 " Industrial Boiler water quality " prescribed limit, and difficulty is bigger.
Wherein, tubular steam boiler uses bellows and unique furnace structure, and heat-transfer effect greatly improved, and condenses
Device absorbs waste heat, and improving feed temperature realizes energy-efficient purpose, and boiler thermal efficiency greatly improves, and furnace structure is small
Type, reservoir storage are few, and boiler uses the steam of pressure only to need 5 minutes from supply is started to, and greatly save the waste heat time
And expense.Currently, through-flow boiler occupation rate of market is up to 85% or more, the country is because of environment and energy-efficient needs, the need of tubular boiler
The amount of asking increases substantially.Through-flow boiler and the entirely different application method of hot water boiler structure also have larger difference.Because of through-flow boiler
When generating steam, water is concentrated hundred times in pot, therefore very high (it is required that the water hardness is less than 0 .03mmol/ to water quality requirement
L), at the same automatic concentration blowdown apparatus detection pot water conductivity, automatic pollution discharge when exceeded.In order to general to boiler supplying soft water
Softened using " water softener ", but after " water softener " work long hours, the reasons such as the decline of ion exchange resin performance or power failure
Water hardness increase can be used, therefore to detect the water hardness at any time.The hardness of water generally with conductivity meter, total dissolved solid instrument or
Chemical reagent measurement, but before conductivity meter, total dissolved solid instrument are only applicable to water softening processing.Because softening in water
In the process, carbonate is replaced by sodium ion, and therefore, although hard water has become soft water, total dissolved solid value does not change
Become.The simple qualitatively water quality and hardness measuring agent method of most domestic at present.Take about 50ml water sample in transparent vessel, Xiang Shui
Two titration property test agents are added dropwise in sample, the aobvious blue as water quality of solution is qualified, and the aobvious red as water quality of solution is unqualified.This side
Method is easy to operate, to sampling amount without strict demand, but must manual operation, artificial detection it is difficult to ensure that test interval it is accurate
Property and test quality.
For this purpose, the Chinese patent that Authorization Notice No. is 206095948 U of CN discloses a kind of automatic steam boiler water hardness
Online agent detection devices include White LED light source and face that reagent is mixed that pond, stirring pool or so outside are respectively equipped with
Magnetic stirrer that colour sensor, stirring pool bottom are equipped with, the injection needle being arranged in the stirrer cover of stirring pool top, polytetrafluoro
Vinyl hose, reagent detection infrared transceiver sensor, miniature peristaltic pump, reagent bottle and controller, injection needle connect polytetrafluoro
Vinyl hose, teflon hose are sequentially connected infrared transceiver sensor, miniature peristaltic pump, reagent bottle, controller difference
Connect color sensor, miniature peristaltic pump；Although the device realizes automatic sampling, automatic detection, the exceeded alarm of the water hardness, nothing
Reagent alarm, Water free alarming, and record time of fire alarming, address, but it is only capable of the hardness of detection water, other critical water
Matter parameter can not detect.
Automatic steam boiler water quality detection is related to multiple water quality detection parameters, such as pH value, chloride ion content, conductivity, hard
Degree, dissolved oxygen, harmful ion content etc. need a large amount of equipment and expense if all measured above-mentioned parameter, and only survey portion
Divide parameter, may result in the possibility of equipment damage.Therefore, it is badly in need of a kind of simple and quick water quality detection method.Inventor exists
It being found in research process, above-mentioned water quality detection parameter needs the reason of detecting to be, first is that it is too low to will lead to boiler heat-transfer efficiency,
Such as the hardness of water；Second is that will cause the corrosion of boiler, such as pH value, conductivity, and causing boiler corrosion is most important danger
Evil.Therefore, inventors have found that if can simply directly judge the water of boiler using extent of corrosion as the standard judged
Matter quality, and can judge that other are unknown, the water quality factors of corrosion may be generated to boiler；If not generating corruption
Erosion, even if part water quality parameter is undesirable, does not need shutdown maintenance yet.
Magnesium alloy is a kind of metal easily corroded, it usually needs the method for alloy is made to avoid corrosion." alloying element
The progress that can be influenced on corrosion resistance of magnesium alloy " Li Lingjie etc., material Leader, 2011,25 (19): 110-113 is described
Aluminium is greater than 2%, and zinc can be improved the corrosion of magnesium alloy when being lower than 2%, and the addition of copper can improve the corrosion of magnesium alloy.Therefore, base
In above content, and the present invention is proposed, a kind of alloy easily corroded is provided.
Summary of the invention
In view of the above shortcomings of the prior art, the object of the present invention is to provide one kind to be used for tubular steam boiler water quality inspection
The alloy and detection method of survey simply can directly judge water quality quality, and it is accurate to be simple and efficient.
The present invention is achieved by the following technical programs:
A kind of alloy for tubular steam boiler water quality detection, by weight percentage, including magnesium 80%-90%, aluminium
0.5%-1%, zinc 4%-8%, copper 5%-10%, and the alloy is porous alloy structure.
Further, the alloy for tubular steam boiler water quality detection, by weight percentage, by magnesium 90%,
Aluminium 1%, zinc 4%, copper 5% form.
Further, the method that the alloy is processed into multi-porous alloy material is casting, sintering process or sedimentation.It is existing
There is the preparation process for largely preparing porous magnesium alloy material in technology, can according to need specific choice preparation method.
Further, the porosity of the alloy is 50% or more, more preferably 70% or more.
The present invention also provides a kind of methods for detecting tubular steam boiler water quality using above-mentioned alloy, including following step
It is rapid:
(1) it determines the composition of alloy, and is prepared into the alloy of the porous alloy structure of certain porosity；
(2) water sample for having measured water quality parameter is chosen, the water sample includes 2 ~ 10 groups of exceeded water samples and 2 ~ 10
The water sample is heated to 80 ~ 100 DEG C by the non-exceeded water sample of group, keeps 10 ~ 30min of temperature after alloy is added, then
Alloy is dried, the mass change of alloy is measured, observes the extent of corrosion and color change of alloy, determine water sample pair
The influence of alloy；Wherein the weight ratio of water sample and alloy is 10 ~ 20:1；
(3) take tubular steam boiler water quality to be measured, according to step (2) operation be added alloy detection, according to the weight of alloy,
The variation of extent of corrosion and color judges whether water quality is exceeded according to the result of step (2)；
(4) when not exceeded with alloy detection water quality, can continue to produce；With alloy detect overproof water quality when, stop production or
The design parameter of water quality is determined using more accurate measurement method.
Further, exceeded water sample described in step (2) refers to that a kind of water quality parameter or several water quality parameters are super
Mark.
Further, the water quality parameter is full basicity, phenolphthalein alkalinity, pH (25 DEG C), dissolved solid, phosphate radical, Asia
Sulfate radical.
Further, when only considering that tubular steam boiler water confrontation boiler generates corrosion impact, step (2) is by alloy weight
Quantitative change is turned to the standard of water quality, can draw out standard curve, to obtain accurate result.
In addition, the method for above-mentioned detection water quality can be also used for the water quality monitoring of other Industrial Boilers, but need basis
The water standard of specific boiler, is adjusted the amounts of components of alloy to reach best testing result.
Compared with prior art, the beneficial effects of the present invention are:
1, by adjusting the component of alloy and content, the corrosion of magnesium alloy is substantially increased, while high hole is made in magnesium alloy
The multi-porous alloy material of rate further improves the corrosion of magnesium alloy.Will be above-mentioned used for magnesium alloy when detecting unqualified water quality,
Can easily judge whether water quality to be detected is exceeded by appearance, weight change.
2, the whether exceeded main purpose of water quality detection is prevented to the corrosion-damaged of boiler, and is that multiple water quality parameters are comprehensive
Group photo sound as a result, through the invention alloy detection, can judge whether water quality exceeded according to the final result of corrosion, than list
Pure all kinds of water quality parameters of detection are more direct accurate.
3, alloy of the invention can be also used for the water quality detection of other boilers.
Specific embodiment
The present invention is described in further detail below by specific implementation example.
Embodiment 1
A kind of alloy for tubular steam boiler water quality detection, by weight percentage, including magnesium 90%, aluminium 1%, zinc 4%,
Copper 5%.After above-mentioned metal powder is mixed in proportion, porous magnesium alloy, hole are obtained according to the method for patent CN100469921C
Rate is 73%, and the protection of carbon dioxide atmosphere is kept in preparation process.
Embodiment 2
A kind of alloy for tubular steam boiler water quality detection, by weight percentage, including magnesium 85%, aluminium 0.5%, zinc
6.5%, copper 8%.In proportion by after above-mentioned metal mixed, porous magnesium alloy, hole are obtained according to the method for patent CN101942581A
Gap rate is 62%, and nitrogen atmosphere protection is kept in preparation process.
Embodiment 3
A kind of alloy for tubular steam boiler water quality detection, by weight percentage, including magnesium 85%, aluminium 0.5%, zinc
6.5%, copper 8%.In proportion by after above-mentioned metal mixed, according to (BACHF W, et al. Production and
Properties of foamed magnesium. Cellular Metal and Polymers, 2005:44-80) side
Method obtains porous magnesium alloy, porosity 70%, and the protection of carbon dioxide atmosphere is kept in preparation process.
Embodiment 4
Determine the standard of the alloy corrosion degree of alloy detection water quality:
GB/T 1576-2008 according to national standards, chooses 4 groups of exceeded water samples for having detected water quality parameter and 4 groups do not surpass
Water sample is marked, specific water quality is referring to table 1:
Table 1: the water quality parameter of water sample
Above-mentioned 8 groups of water sample 50g are taken respectively, are added in sealed glass jars, being put into 90 DEG C of baking oven reaches water sample
To 90 DEG C, the alloy being then respectively adding in 3g embodiment 1 keeps temperature 20min.Then alloy is dried in vacuo, measurement is closed
The mass change of gold and the cosmetic variation for observing alloy.8 groups of samples, it is respectively 5.26% that the quality of alloy, which reduces, 7.35%,
8.91%, 4.85%, 0.29%, 0.86%, 0.43%, 1.51%, extent of corrosion is positively correlated with alloy mass reduction, corrosion location face
Color is deepened.In addition, extent of corrosion is lower before overproof water quality, exceeded post-etching degree be increased dramatically, thus alloy is as water
The standard of quality detection can effectively prevent damage of the water quality to boiler.
Embodiment 5
It is whether exceeded that tubular steam boiler water quality to be measured is detected with alloy:
Water sample to be measured is taken, detects water quality according to the method alloy of embodiment 4, as a result alloy mass reduces by 1.26%, corrosion
Degree and color change are lower than exceeded water 1-4, therefore may determine that water sample to be measured is not exceeded.
It is easy to operate from testing result it is found that detection time only needs or so half an hour, it does not need to measure a large amount of water quality ginseng
Number, that is, can determine whether water quality is exceeded.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement；And these are modified or replaceed, technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of alloy for tubular steam boiler water quality detection, which is characterized in that by weight percentage, including magnesium
80%-90%, aluminium 0.5%-1%, zinc 4%-8%, copper 5%-10%, and the alloy is porous alloy structure.
2. alloy according to claim 1, it is characterised in that: by weight percentage, by magnesium 90%, aluminium 1%, zinc 4%, copper
5% composition.
3. alloy according to claim 1, it is characterised in that: the alloy is processed into the method for multi-porous alloy material as casting
Make method, sintering process or sedimentation.
4. alloy according to claim 1, it is characterised in that: the porosity of the alloy is 50% or more.
5. alloy according to claim 1, it is characterised in that: the porosity of the alloy is 70% or more.
6. a kind of method for detecting tubular steam boiler water quality using alloy described in claim 1-5, which is characterized in that including
Following steps:
(1) it determines the composition of alloy, and is prepared into the alloy of the porous alloy structure of certain porosity；
(2) water sample for having measured water quality parameter is chosen, the water sample includes 2 ~ 10 groups of exceeded water samples and 2 ~ 10
The water sample is heated to 80 ~ 100 DEG C by the non-exceeded water sample of group, keeps 10 ~ 30min of temperature after alloy is added, then
Alloy is dried, the mass change of alloy is measured, observes the extent of corrosion and color change of alloy, determine water sample pair
The influence of alloy；Wherein the weight ratio of water sample and alloy is 10 ~ 20:1；
(3) take tubular steam boiler water quality to be measured, according to step (2) operation be added alloy detection, according to the weight of alloy,
The variation of extent of corrosion and color judges whether water quality is exceeded according to the result of step (2)；
(4) when not exceeded with alloy detection water quality, can continue to produce；With alloy detect overproof water quality when, stop production or
The design parameter of water quality is determined using more accurate measurement method.
7. method according to claim 6, which is characterized in that exceeded water sample described in step (2) refers to a kind of water quality
Parameter or the exceeded boiler water sample of several water quality parameters.
8. method according to claim 7, which is characterized in that the pH when water quality parameter is full basicity, phenolphthalein alkalinity, 25 DEG C
Value, dissolved solid, phosphate content or inferior sulfate radical content.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08114569A (en) * | 1994-10-18 | 1996-05-07 | Tokyo Gas Co Ltd | Field measurement electrode device for corrosion potential of hot-water supply piping |
| CN1987457A (en) * | 2005-12-19 | 2007-06-27 | 栗田工业株式会社 | Water quality evaluation method, ultrapure water evaluation device using the same, and ultrapure water production system |
| CN101672752A (en) * | 2009-09-23 | 2010-03-17 | 中轻太阳能电池有限责任公司 | Method for detecting resistance of solar cells to corrosion of water vapor |
| CN103675221A (en) * | 2012-09-12 | 2014-03-26 | 中国石油化工股份有限公司 | Water quality detection analysis system and water quality detection analysis method |
| CN205532597U (en) * | 2016-02-23 | 2016-08-31 | 中国石油化工股份有限公司 | Water injection well well head sewage corrosion detection device |
-
2018
- 2018-09-06 CN CN201811037915.4A patent/CN108982186A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08114569A (en) * | 1994-10-18 | 1996-05-07 | Tokyo Gas Co Ltd | Field measurement electrode device for corrosion potential of hot-water supply piping |
| CN1987457A (en) * | 2005-12-19 | 2007-06-27 | 栗田工业株式会社 | Water quality evaluation method, ultrapure water evaluation device using the same, and ultrapure water production system |
| CN101672752A (en) * | 2009-09-23 | 2010-03-17 | 中轻太阳能电池有限责任公司 | Method for detecting resistance of solar cells to corrosion of water vapor |
| CN103675221A (en) * | 2012-09-12 | 2014-03-26 | 中国石油化工股份有限公司 | Water quality detection analysis system and water quality detection analysis method |
| CN205532597U (en) * | 2016-02-23 | 2016-08-31 | 中国石油化工股份有限公司 | Water injection well well head sewage corrosion detection device |
Non-Patent Citations (3)
| Title |
|---|
| 木亚萨木·阿斯哈尔: "工业锅炉水质检测问题及处理方法分析", 《科技展望》 * |
| 李凌杰 等: "合金元素对镁合金耐腐蚀性能影响的研究进展", 《材料导报A：综述篇》 * |
| 赵伟: "低硬低碱条件下水质化学稳定性评价体系的构建", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
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Application publication date: 20181211 |