CN201222028Y - Experimental device for static high-temperature naphthenic acid corrosion - Google Patents
Experimental device for static high-temperature naphthenic acid corrosion Download PDFInfo
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- CN201222028Y CN201222028Y CNU2008201211438U CN200820121143U CN201222028Y CN 201222028 Y CN201222028 Y CN 201222028Y CN U2008201211438 U CNU2008201211438 U CN U2008201211438U CN 200820121143 U CN200820121143 U CN 200820121143U CN 201222028 Y CN201222028 Y CN 201222028Y
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- naphthenic acid
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Abstract
The utility model discloses an experimental facility for high-temperature static naphthenic acid corrosion, which comprises a container, a ceramic electric heating plate, two test-piece racks, upper and lower glass rods, two temperature sensors and two condensing units, wherein the container is equipped with a cover, the ceramic electric heating plate is coated outside the container, the two test-piece racks are arranged in the container, the upper and lower glass rods for suspending test samples are horizontally mounted between the two test-piece racks, the two temperature sensors and the two condensing devices are fixed on the cover, and one end of each temperature sensor extends into the container and the other end is connected with a temperature measuring controller and an electric temperature display respectively. Additionally, the condensing device is equipped with a water inlet and a water outlet, wherein the water inlet is connected with a pump and the water outlet is connected with a water pool. The experimental facility has simple structure, convenient operation, high working efficiency and reliable test result, can perform corrosion tests of liquid and gaseous corrosive medium under the same temperature simultaneously, can guarantee stable pressure and acid value in the container, and can control and monitor corrosion conditions and bring convenience to real-time operation in corrosion process, which is adaptable to the scientific research field of high-temperature naphthenic acid corrosion behavior.
Description
Technical field
The utility model relates to a kind of device that the decay resistance of material is tested of being used for, and is specifically related to a kind of experimental provision that is used for static state high-temperature naphthenic acid erosion.
Background technology
Naphthenic acid corrosion is the old enemy of petroleum industry.It is recurrent a kind of etch state on petroleum-oil column high temperature position and transfer line.Since 80 years prehumans it is familiar with to some extent, it is causing refining equipment always and is destroying.Because lack effective testing equipment etc., naphthenic acid corrosion mechanism still imperfectly understands at present.The research of naphthenic acid corrosion at present remains one of focus of oil refining enterprise concern in the world.In order to understand the reason and the mechanism of material corrosion damage, formulate corresponding preventive measure, just need be to the corrosion resistance research experiment of material.
Naphthenic acid corrosion is to take place between 220 ℃～350 ℃ in temperature range usually, and is maximum 270～280 ℃ of scopes corrosion, so the test temperature scope generally gets 220 ℃～350 ℃, has certain corrosion rate with the corrosion that guarantees naphthenic acid.The pattern on the size of corrosion rate and the surface that is corroded depends on the temperature of corrosive liquid, the concentration of corrosive liquid, the state of corrosive liquid, the homogeneity of corrosive liquid in the corrosion process, parameter and states such as the adjuvant in the corrosive liquid closely.The high-temperature naphthenic acid erosion experimental provision of home and abroad all exists many weak points at present.Mainly show: the inefficiency of device, complicated operation; Corrosion process all is omnidistance the immersion, can only investigate the corrosion behavior under the corrosive liquid a single state; Be difficult to guarantee the stable of corrosion environment pressure and acid number; Because experimental provision is to be based upon on the chemical experiment device basis, its technological parameter and various condition are difficult to obtain strict control simultaneously, and the consistance of naphthenic acid corrosion is relative with controllability relatively poor.Guarantee to obtain a controllable corrosion process, guarantee the microtexture repeatably met design requirement, use specially, can be controlled, monitor, and be beneficial to the device of operating in the corrosion process and just seem very important etching condition.
Summary of the invention
The purpose of this utility model provides a kind of high precision, high-level efficiency, two-phase, the controlled experimental provision that is used for static state high-temperature naphthenic acid erosion.
The experimental provision that is used for static state high-temperature naphthenic acid erosion of the present utility model, comprise: rustless steel container with cover plate, temperature measurement controller, electron temperature display instrument and the pond that has pump, outside rustless steel container, be surrounded by the ceramic electric heating plate, in container, there are two vertical weldings to be connected to the test specimen frame of cover inner surface, between two test specimen framves, be horizontally installed with two glass bars that are used for hanging sample up and down, be fixed with two temperature sensors and condensing unit on the cover plate, one end of two temperature sensors stretches in the container respectively, the other end is outside container, one of them temperature sensor links to each other with temperature measurement controller, another temperature sensor links to each other with the electron temperature display instrument, condensing unit is had in the stainless steel of capping by two coaxial cables, urceolus constitutes, inner core communicates with container, outer tube bottom and cover plate welding, in, form the sealing cavity volume between urceolus, have water inlet and water delivering orifice on the urceolus, water inlet links to each other with pump, and water delivering orifice links to each other with the pond.
In order to guarantee seal of vessel, the soft graphite Composition spacer can be set between cover plate and container, the central layer of this Composition spacer is 304 stainless steels.
The utility model device is to design and produce at the static state high-temperature naphthenic acid erosion test specially, the fluid that can be the different acid numbers of being prepared provides required high temperature, the test specimen that multiple material is made is suspended on and carries out static corrosion in the test unit in the naphthenic acid environment, a part of test specimen all is immersed in the naphthenic acid liquid medium, another part then hangs in the naphthenic acid gaseous environment, realizes that gas-liquid two-phase carries out simultaneously.
The utility model apparatus structure is simple, and is easy to operate, can carry out under the uniform temp corrosion test of liquid and gas corrosive medium, the high efficiency of device simultaneously; Adopt the recirculated water condensation, can guarantee that container inner pressure and acid number are stable; The contactless suspension of a plurality of same material test specimens increases the test findings reliability; Can strict CONTROL PROCESS parameter and various condition, test temperature can set up on their own as required and keep constant.The utility model device provides a controllable corrosion process, realizes control, monitoring to etching condition, and is beneficial to the true-time operation in the corrosion process.Be applicable to the scientific research field of high-temperature naphthenic acid erosion behavior.
Description of drawings
Fig. 1 is an experimental provision structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing in detail the utility model is described in detail.
With reference to Fig. 1, the experimental provision that is used for static state high-temperature naphthenic acid erosion, comprise: rustless steel container 1 with cover plate 3, temperature measurement controller 10, electron temperature display instrument 11 and the pond 13 that has pump 12, outside rustless steel container, be surrounded by ceramic electric heating plate 2, in container, there are two vertical weldings to be connected to the test specimen frame 4 of cover plate 3 inside surfaces, between two test specimen framves, be horizontally installed with two glass bars 5 that are used for hanging sample up and down, be fixed with two temperature sensors 7 and condensing unit 6 on the cover plate, in the legend, two temperature sensors are twisted by the internal thread hole that is arranged on cover plate and are connected on the cover plate, one end of two temperature sensors stretches into respectively in the container 1, the other end is outside container 1, one of them temperature sensor links to each other with temperature measurement controller 10, and another temperature sensor links to each other with electron temperature display instrument 11.Condensing unit 6 is made of stainless steel inner core 15 and the urceolus 16 that two coaxial cables have capping, inner core 15 communicates with container 1, urceolus 16 bottoms and cover plate welding, form the sealing cavity volume between inside and outside tube, have water inlet 8 and water delivering orifice 9 on the urceolus, water inlet 8 links to each other with pump 12, and water delivering orifice 9 links to each other with pond 13.
In the illustrated example, being provided with central layer between cover plate 3 and container 1 is 304 stainless soft graphite Composition spacers 14.
During experiment, test specimen is hung on the glass bar, be suspended in the container by the test specimen frame, make top row's test specimen place the gaseous corrosion medium, promptly on the liquid level of corrosive liquid, below row's test specimen place the liquid phase corrosive medium, carry out the complete immersion corrosion test, realize that gas-liquid two-phase carries out simultaneously.Utilize the ceramic electrical hot plate to provide required hot environment for corrosion test, heating-up temperature is controlled by temperature measurement controller, temperature fluctuation can be controlled at design temperature ± 1% scope in, liquid in container is heated evenly, temperature in the container is recorded by temperature sensor, and can measure in the corrosive medium different 2 temperature simultaneously, the monitor temperature error is guaranteed temperature controlled accuracy and precision.Recirculated water condensation device, in order to prevent the corrosive medium vaporization, the heat that utilizes recirculated water to take away to discharge in the process of the test, make the liquefaction that is cooled of the fluid of the vaporization that enters inner core, the initial volume fluctuation of guaranteeing etchant solution is no more than ± and 1%, reduce because the variation of the medium acid number that causes of vaporization, chilled water is bottom-up logical, improves condensation efficiency.
Claims (3)
1. the experimental provision that is used for static state high-temperature naphthenic acid erosion, it is characterized in that comprising: rustless steel container (1) with cover plate (3), temperature measurement controller (10), electron temperature display instrument (11) and have the pond (13) of pump (12), outside rustless steel container, be surrounded by ceramic electric heating plate (2), in container, there are two vertical weldings to be connected to the test specimen frame (4) of cover plate (3) inside surface, between two test specimen framves, be horizontally installed with two glass bars (5) that are used for hanging sample up and down, be fixed with two temperature sensors (7) and condensing unit (6) on the cover plate, one end of two temperature sensors stretches into respectively in the container (1), the other end is outside container (1), one of them temperature sensor links to each other with temperature measurement controller (10), another temperature sensor links to each other with electron temperature display instrument (11), condensing unit (6) is had in the stainless steel of capping by two coaxial cables, urceolus (15), (16) constitute, inner core (15) communicates with container (1), urceolus (16) bottom and cover plate welding, in, form the sealing cavity volume between urceolus, have water inlet (8) and water delivering orifice (9) on the urceolus, water inlet (8) links to each other with pump (12), and water delivering orifice (9) links to each other with pond (13).
2. the experimental provision that is used for static state high-temperature naphthenic acid erosion according to claim 1 is characterized in that having soft graphite Composition spacer (14) between cover plate (3) and the container (1), and the central layer of this Composition spacer is 304 stainless steels.
3. the experimental provision that is used for static state high-temperature naphthenic acid erosion according to claim 1 is characterized in that temperature sensor (7) is connected on the cover plate by the internal thread hole that is arranged on cover plate is stubborn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201211438U CN201222028Y (en) | 2008-07-08 | 2008-07-08 | Experimental device for static high-temperature naphthenic acid corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201211438U CN201222028Y (en) | 2008-07-08 | 2008-07-08 | Experimental device for static high-temperature naphthenic acid corrosion |
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| Publication Number | Publication Date |
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| CN201222028Y true CN201222028Y (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201211438U Expired - Fee Related CN201222028Y (en) | 2008-07-08 | 2008-07-08 | Experimental device for static high-temperature naphthenic acid corrosion |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308082B (en) * | 2008-07-08 | 2010-12-08 | 浙江大学 | Experimental device for static state high-temperature naphthenic acid erosion |
| CN103364328A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Gas/liquid corrosion simulation test device and test method |
| CN107589064A (en) * | 2017-09-15 | 2018-01-16 | 天津大学 | A kind of concrete sewer corrosion research simulation plumbing installation |
| CN110261287A (en) * | 2019-05-08 | 2019-09-20 | 西安交通大学 | Heat proof material hot corrosion resistance assesses devices and methods therefor under a kind of combustion atmosphere |
| CN114486709A (en) * | 2022-03-15 | 2022-05-13 | 中国核动力研究设计院 | Three-phase corrosion test device and test method |
-
2008
- 2008-07-08 CN CNU2008201211438U patent/CN201222028Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308082B (en) * | 2008-07-08 | 2010-12-08 | 浙江大学 | Experimental device for static state high-temperature naphthenic acid erosion |
| CN103364328A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Gas/liquid corrosion simulation test device and test method |
| CN107589064A (en) * | 2017-09-15 | 2018-01-16 | 天津大学 | A kind of concrete sewer corrosion research simulation plumbing installation |
| CN110261287A (en) * | 2019-05-08 | 2019-09-20 | 西安交通大学 | Heat proof material hot corrosion resistance assesses devices and methods therefor under a kind of combustion atmosphere |
| CN114486709A (en) * | 2022-03-15 | 2022-05-13 | 中国核动力研究设计院 | Three-phase corrosion test device and test method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 |