CN106226227A - Corrosion rate tester under a kind of ozone environment - Google Patents
Corrosion rate tester under a kind of ozone environment Download PDFInfo
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- CN106226227A CN106226227A CN201610546578.6A CN201610546578A CN106226227A CN 106226227 A CN106226227 A CN 106226227A CN 201610546578 A CN201610546578 A CN 201610546578A CN 106226227 A CN106226227 A CN 106226227A
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- ozone
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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Abstract
Corrosion rate tester under a kind of ozone environment, including oxygen tank, the opening of oxygen tank is provided with air relief valve, and oxygen tank connects also by oxygen conveying pipe ozonator；Ozone conveying pipe it is also associated with on ozonator；Corrosion rate tester also includes constant water bath box, is provided with vial in constant water bath box, is hung with part to be measured in vial, and ozone conveying pipe stretches in vial.Corrosion rate tester under above-mentioned a kind of ozone environment, oxygen tank is used for providing oxygen, ozonator is used for producing ozone, constant water bath box is used for providing the temperature environment identical with denitrification apparatus, in vial, a certain amount of water is used for providing required humidity environment, and vial is additionally operable to hang part to be measured.Corrosion rate tester under above-mentioned a kind of ozone environment, operating process is simple, and low cost of manufacture can simulate the atmosphere in denitrification apparatus and environment easily, then records the corrosion rate of part to be measured under different ozone environment.
Description
Technical field
The present invention relates to petrochemical equipment corrosion condition simulation test, be specifically related in denitrification apparatus different ozone concentration
Lower corrosion rate tester.
Background technology
Since 20 century 70s, NOXAtmosphere polluting problem by pay attention to day by day, NOXBe main atmosphere pollution it
One, NOXExceed standard and can enough form acid rain, cause photochemical fog, destroy atmospheric ozone layer.At present, the denitration in petrochemical industry
Device uses method for oxidizing and denitrating ozone to carry out denitration mostly.Method for oxidizing and denitrating ozone is that the oxidation susceptibility utilizing ozone realizes
The removing of NOX in flue gas, ozone oxidation reaction product is harmless O2, ozone self can also be decomposed into O2, and at denitrification process
In be not introduced into other impurity；Product NO after NO oxidationX(X ＞ 1) is dissolved in water mostly, it is simple to absorbs and processes.Along with country is right
The requirement of petrochemical plant pollutant emission is increasingly stricter, and desulphurization denitration has become the development trend of flue gas pollutant control technology.
Ozone is a kind of extremely unstable material, and oxidisability is extremely strong, can the various material of oxide etch.In denitrification apparatus,
Ozone with NOXThrough different pipelines and chamber before hybrid reaction, pipeline and chamber corrosion condition are serious.
Summary of the invention
In order to solve the problem that in prior art, in equipment for denitrifying flue gas, the inner wall corrosion of pipeline and chamber is serious, the present invention
Corrosion rate tester under a kind of ozone environment is provided.
Corrosion rate tester under a kind of ozone environment that the present invention provides, including oxygen tank, the opening of oxygen tank is pacified
Equipped with controlling the air relief valve that oxygen flows out, the opening of oxygen tank connects also by oxygen conveying pipe to be had ozonator and passes through oxygen
Letter shoot carries oxygen to ozonator.The ozone conveying pipe of output ozone it is also associated with on ozonator；Corrosion speed
Rate tester also includes constant water bath box, is provided with vial in constant water bath box, and vial internal memory has for simulating humidity ring
The clear water in border, is also hung with part to be measured to be tested in vial, the air vent of described ozone conveying pipe stretches in vial also
In vial, input ozone, vial is additionally provided with the air vent discharged by gas after reaction.
Preferably, described flexible strand is polytetrafluoroethylene wire.
The step carrying out testing by above-mentioned corrosion rate tester is as follows:
The first step, first passes through the Sandpapering part to be measured of 120 mesh, to be measured with ethanol purge in ultrasonic bath the most again
The sand grains of part remained on surface, subsequently cleans part to be measured with acetone and removes oil stain.Then with scanning electron microscopic observation part to be measured surface
Pattern, and weigh the quality of the front part to be measured of corrosion；It is suspended on followed by by the part polytetrafluoroethylene wire to be measured cleared up
In vial.
Second step, opens constant water bath box and heats vial, and make vial be maintained at steady temperature.
3rd step, opens air relief valve, makes oxygen enter ozonator by oxygen conveying pipe；Then open ozone to occur
Device power supply, preheats 30 minutes ozonator.
4th step, the electric current of regulation ozonator and voltage, and then regulation oxygen react generation in ozonator
The concentration of ozone.
5th step, the end that ozone carries pipe is stretched in vial, will be produced by ozone conveying pipe in ozonator
Raw ozone is delivered in vial.
6th step, after ozone enters vial, reacts 7 × 24 hours, part to be measured corrosion in making vial.
7th step, takes out the part to be measured after corrosion, with the surface topography of part to be measured after scanning electron microscopic observation ozone corrosion, right
Micro-variations than part to be measured corrosion front and rear surfaces pattern.
8th step, first with clean water part to be measured, then scrubs clean part to be measured with hairbrush, subsequently uses inhibition
Part to be measured is cleaned in acid, then cleans part to be measured with ethanol or propanol, does dried followed by part to be measured；Finally weigh in the balance
Measure the quality of part to be measured, contrast the mass change value before and after part to be measured corrosion.
Corrosion rate tester under above-mentioned a kind of ozone environment, oxygen tank is used for providing product ozoniferous raw material, and ozone is sent out
Raw device is used for producing ozone, and constant water bath box is used for providing the temperature environment identical with denitrification apparatus, a certain amount of in vial
Water is used for providing required humidity environment.With the atmosphere in accurate simulation denitrification apparatus and environment, and ozone concentration pair can be assessed
The impact of part corrosion rate to be measured.Corrosion rate tester under above-mentioned a kind of ozone environment, operating process is simple, manufacturing cost
Low, the atmosphere in denitrification apparatus and environment can be simulated easily, then record the corrosion rate of part to be measured under different ozone environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of corrosion rate tester under a kind of ozone environment.
Detailed description of the invention
Embodiment 1
Corrosion rate tester under a kind of ozone environment, as it is shown in figure 1, include oxygen tank 1, the opening of oxygen tank 1 is pacified
Equipped with controlling the air relief valve that oxygen flows out, the opening of oxygen tank 1 connects also by oxygen conveying pipe has ozonator 2 and to smelly
Oxygen Generator 2 carries oxygen.The ozone conveying pipe of output ozone it is also associated with on ozonator 2；Corrosion rate tester is also
Including constant water bath box 3, vial 4 is installed in constant water bath box 3.Vial 4 internal memory has for simulating the clear of humidity environment
Water, is hung with part to be measured to be tested also by polytetrafluoroethylene wire in vial 4.The air vent of described ozone conveying pipe stretches into
Input ozone in vial 4 and in vial 4, vial 4 is additionally provided with the air vent discharged by gas after reaction.
Corrosion rate tester under above-mentioned a kind of ozone environment, oxygen tank 1 is used for providing product ozoniferous raw material, and ozone is sent out
Raw device 2 is used for producing ozone, and constant water bath box 3 is used for providing the temperature environment identical with denitrification apparatus, a certain amount of in vial 4
Water for providing required humidity environment, vial 4 is used for hanging part to be measured.Under above-mentioned a kind of ozone environment, corrosion rate is surveyed
Examination instrument, operating process is simple, and low cost of manufacture can be simulated the atmosphere in denitrification apparatus and environment easily, then record difference
The corrosion rate of part to be measured under ozone environment.
Embodiment 2
A kind of method being carried out by corrosion rate tester as described in Example 1 testing, testing procedure is as follows:
The first step, first passes through the Sandpapering part to be measured of 120 mesh, to be measured with ethanol purge in ultrasonic bath the most again
The sand grains of part remained on surface, subsequently cleans part to be measured with acetone and removes oil stain.Then with scanning electron microscopic observation part to be measured surface
Pattern, and weigh the quality of the front part to be measured of corrosion；It is suspended on followed by by the part polytetrafluoroethylene wire to be measured cleared up
In vial 4.
Second step, opens constant water bath box 3 and heats vial 4, and make vial 4 be maintained at steady temperature.
3rd step, opens air relief valve, makes oxygen enter ozonator 2；Then ozonator 2 power supply is opened, to smelly
Oxygen Generator 2 preheats 30 minutes.
4th step, the electric current of regulation ozonator 2 and voltage, make oxygen react generation ozone in ozonator 2.
5th step, the end that ozone carries pipe is stretched in vial 4, makes ozone enter vial 4.
6th step, after ozone enters vial 4, reacts 7 × 24 hours, part to be measured corrosion in making vial 4.
7th step, takes out the part to be measured after corrosion, with the surface topography of part to be measured after scanning electron microscopic observation ozone corrosion, right
Micro-variations than part to be measured corrosion front and rear surfaces pattern.
8th step, first with clean water part to be measured；Then with hairbrush, part to be measured is scrubbed clean；Subsequently use inhibition
Part to be measured is cleaned in acid；Then clean part to be measured with ethanol or propanol, do dried followed by part to be measured.Finally weigh in the balance
Measure the quality of part to be measured, contrast the mass change value before and after part to be measured corrosion.
Tested by corrosion rate tester under above-mentioned ozone environment, can be with the atmosphere in accurate simulation denitrification apparatus
With environment, and assess the ozone concentration impact on part corrosion rate to be measured, before using scanning electron microscope to characterize part to be measured corrosion simultaneously
After microscopic appearance, so can not only accurate evaluation, moreover it is possible to further look at the microstructure change on part surface to be measured, can be accurately
Reflect the ozone etching characteristic to part to be measured.Above-mentioned method of testing, the ozone concentration range of its test is wide, the temperature of test process
Degree can accurately control.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change that the technical staff in territory is made in the essential scope of the present invention, retrofit, add or replace, also should belong to the present invention's
Protection domain.
Claims (2)
1. corrosion rate tester under an ozone environment, it is characterised in that include oxygen tank, the opening of oxygen tank is provided with
Controlling the air relief valve that oxygen flows out, the opening of oxygen tank connects also by oxygen conveying pipe has ozonator, oxygen tank to pass through
Oxygen conveying pipe carries oxygen to ozonator；The ozone conveying pipe of output ozone it is also associated with on ozonator；Corrosion
Rate test instrument also includes constant water bath box, is provided with vial in constant water bath box, and vial internal memory has for simulating humidity
The clear water of environment, is hung with part to be measured to be tested in vial, the air vent of described ozone conveying pipe stretches in vial, glass
The air vent discharged by gas after reaction it is additionally provided with on glass bottle.
2. corrosion rate tester under a kind of ozone environment as claimed in claim 1, it is characterised in that described flexible strand is poly-
Tetrafluoroethene line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546578.6A CN106226227A (en) | 2016-07-12 | 2016-07-12 | Corrosion rate tester under a kind of ozone environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610546578.6A CN106226227A (en) | 2016-07-12 | 2016-07-12 | Corrosion rate tester under a kind of ozone environment |
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| Publication Number | Publication Date |
|---|---|
| CN106226227A true CN106226227A (en) | 2016-12-14 |
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ID=57519019
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610546578.6A Pending CN106226227A (en) | 2016-07-12 | 2016-07-12 | Corrosion rate tester under a kind of ozone environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138159A (en) * | 2021-05-21 | 2021-07-20 | 中国石油化工股份有限公司 | Corrosion evaluation method and corrosion evaluation device in ozone environment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201296697Y (en) * | 2008-11-24 | 2009-08-26 | 浙江大学 | Integrated ozone/electrochemical treatment device for organic wastewater |
| CN102135494A (en) * | 2010-12-31 | 2011-07-27 | 高铁检测仪器（东莞）有限公司 | Method for testing ozone resistance and device thereof |
| CN104215571A (en) * | 2014-09-24 | 2014-12-17 | 中国石油天然气股份有限公司 | Method for testing high-temperature and high-pressure corrosion rate of multi-phase medium |
| CN105300873A (en) * | 2015-10-21 | 2016-02-03 | 中国石油化工股份有限公司 | Testing method and device for titanium alloy corrosivity under different ozone concentrations |
-
2016
- 2016-07-12 CN CN201610546578.6A patent/CN106226227A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201296697Y (en) * | 2008-11-24 | 2009-08-26 | 浙江大学 | Integrated ozone/electrochemical treatment device for organic wastewater |
| CN102135494A (en) * | 2010-12-31 | 2011-07-27 | 高铁检测仪器（东莞）有限公司 | Method for testing ozone resistance and device thereof |
| CN104215571A (en) * | 2014-09-24 | 2014-12-17 | 中国石油天然气股份有限公司 | Method for testing high-temperature and high-pressure corrosion rate of multi-phase medium |
| CN105300873A (en) * | 2015-10-21 | 2016-02-03 | 中国石油化工股份有限公司 | Testing method and device for titanium alloy corrosivity under different ozone concentrations |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138159A (en) * | 2021-05-21 | 2021-07-20 | 中国石油化工股份有限公司 | Corrosion evaluation method and corrosion evaluation device in ozone environment |
| CN113138159B (en) * | 2021-05-21 | 2024-03-08 | 中国石油化工股份有限公司 | Corrosion evaluation method and corrosion evaluation device in ozone environment |
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