CN106468650A - Reactor and corrosion test system - Google Patents
Reactor and corrosion test system Download PDFInfo
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- CN106468650A CN106468650A CN201510519179.6A CN201510519179A CN106468650A CN 106468650 A CN106468650 A CN 106468650A CN 201510519179 A CN201510519179 A CN 201510519179A CN 106468650 A CN106468650 A CN 106468650A
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Abstract
The present invention provides a kind of reactor and corrosion test system, and wherein, reactor includes：Heater, the kettle being arranged in heater, the kettle cover of sealing kettle, pass through kettle cover insert the actuating device that the tensile axis in kettle are connected with tensile axis, and three-electrode system；Wherein, three-electrode system includes：Working electrode, reference electrode and auxiliary electrode；First electrode mouth and second electrode mouth are provided with kettle cover；Reference electrode is inserted in kettle by first electrode mouth；Auxiliary electrode is inserted in kettle by second electrode mouth；Working electrode is arranged at one end of tensile axis, and one end of tensile axis is the one end in kettle；The inside of tensile axis is hollow structure.
Description
Technical field
The present invention relates to chemical apparatuses technical field, more particularly, to a kind of reactor and corrosion test system.
Background technology
Reactor, broadly understood the container for physically or chemically reacting, and specifically, refers to according to difference
Process conditions demand carry out structure design and the parameter configuration of container, with realize technological requirement heating,
Evaporation, the mixture function of cooling, are widely used in the research of the various scientific experimentss project such as oil, chemical industry.
In general, reactor is applied and is mainly used in oil gas field corrosion testing in oil field, mainly to each
The corrosion inhibition of the corrosion resistance and corrosion inhibiter of planting tubing is evaluated.
The existing reactor for oil gas field corrosion testing, mainly passes through rotary hanging plate in a kettle.
Method tested.Fig. 1 is the structural representation of existing reactor, as shown in figure 1, reactor
Include：Kettle 100, kettle cover 200, shaft 300, motor 400 and test tubing 500, kettle
Body 100 is arranged in heating furnace 600, and test tubing 500 is arranged on shaft 300 in the way of lacing film
Lower end.Corrosion tests in this reactor, main inclusion：Test material is processed into an extension
Piece, is arranged on the lower section of shaft 300, and corrosion inhibiter is poured in kettle 100, using autoclave fastening
Kettle cover 200 is sealed by bolt with kettle 100, subsequently kettle 100 is heated, and according to examination
Test the rotating speed needing to adjust pressure and motor in kettle 100, simulate the high rotating speed of oil gas field High Temperature High Pressure
Corrosive environment, through test after a while, tubing 500 will be tested and take out in kettle 100, see
Examine corrosion condition, the anticorrosive situation of evaluation test tubing and the corrosion inhibition of corrosion inhibiter of test tubing.
However, in existing reactor, test tubing soaks at least three talentes in corrosion inhibiter and occurs
Corrosion phenomenon, the time wanting to obtain accurate corrosion information consumption is longer, it is also desirable to will test
Take out, in tubing cylinder kettle, the corrosion condition that tubing can be observed, therefore, existing reactor can not be fast
What speed was easy obtains testing the anticorrosive situation of tubing and the corrosion inhibition of corrosion inhibiter.
Content of the invention
The present invention provides a kind of reactor and corrosion test system, and tubing is tested in acquisition that can be fast and convenient
Anticorrosive situation and corrosion inhibiter corrosion inhibition.
The present invention provides a kind of reactor, including：Heater, the kettle being arranged in described heater
Body, seal the kettle cover of described kettle, pass through described kettle cover insert the tensile axis in described kettle and institute
State the actuating device of tensile axis connection, and three-electrode system；
Wherein, described three-electrode system includes：Working electrode, reference electrode and auxiliary electrode；
First electrode mouth and second electrode mouth are provided with described kettle cover；Described reference electrode passes through described the
One electrode ports are inserted in described kettle；Described auxiliary electrode is inserted in described kettle by second electrode mouth；
Described working electrode is arranged at one end of described tensile axis, and one end of described tensile axis is positioned at described
One end in kettle；
The inside of described tensile axis is hollow structure.The present invention also provides a kind of corrosion test system, including：
Reactor and electrochemical workstation；
Wherein, described electrochemical workstation is connected with reference electrode and auxiliary electrode respectively by wire, and
It is connected with working electrode by the wire of the inside setting of tensile axis, to realize described electrochemical workstation root
According to the voltage of the working electrode in the loop that described working electrode and described reference electrode are formed measurement and
The survey of the electric current by described working electrode in the loop of described working electrode and the formation of described auxiliary electrode
Amount, and the polarization curve test to described working electrode or electrochemical impedance test are to obtain described work
Make the etching characteristic of electrode.
Reactor and corrosion test system that the present invention provides, by being arranged on stretching axle position by working electrode
One end in kettle, reference electrode and auxiliary electrode is passed through the electrode ports on kettle cover and inserts in kettle,
Form three-electrode system, and the inside of tensile axis is set to hollow, can make working electrode pass through wire with
Electrochemical workstation connect, the present invention utilize three-electrode system increase working electrode receiving and losing electrons speed and
Ability, overcomes the slower shortcoming of tubing corrosion in prior art, accelerates working electrode rotten in corrosion inhibiter
Erosion speed, can quickly obtain the anticorrosive situation of working electrode and the corrosion inhibition of corrosion inhibiter, and survey
The corrosion inhibition of the anticorrosive situation of test tube material and corrosion inhibiter can directly obtain from electrochemical workstation,
Again working electrode need not be taken out, overcome the shortcoming observing inconvenience in prior art, can easily obtain
The anticorrosive situation of working electrode and the corrosion inhibition of corrosion inhibiter.
Brief description
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the invention of this reality, those of ordinary skill in the art institute under the premise of not making creative work
The every other embodiment obtaining, broadly falls into the scope of protection of the invention.
Fig. 1 is the structural representation of existing reactor；
The structural representation of the reactor that Fig. 2 provides for the embodiment of the present invention one；
The structural representation of the reactor that Fig. 3 provides for the embodiment of the present invention two；
Fig. 4 is the top view of Fig. 3；
The structural representation of the reactor that Fig. 5 provides for the embodiment of the present invention three；
The structural representation of the reactor that Fig. 6 provides for the embodiment of the present invention four；
The structural representation of the corrosion test system that Fig. 7 provides for the embodiment of the present invention five.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
The every other embodiment being obtained under the premise of going out creative work, broadly falls into the scope of protection of the invention.
Fig. 2 implements the structural representation of the reactor of an offer for the present invention, as shown in Fig. 2 this enforcement
The reactor that example provides includes：Including：Heater 1, the kettle 2 being arranged in heater 1, close
The kettle cover 3 of envelope kettle 2, the tensile axis 4 passing through kettle cover 3 and inserting in kettle 2 are connected with tensile axis 4
Actuating device 5, and three-electrode system；Wherein, three-electrode system includes：Working electrode 61, ginseng
Than electrode 62 and auxiliary electrode 63.
In the present embodiment, kettle cover 3 is provided with first electrode mouth 31 and second electrode mouth 32；Reference
Electrode 62 is inserted in kettle 2 by first electrode mouth 31；Auxiliary electrode 63 passes through second electrode mouth 32
In insertion kettle 2；Working electrode 61 is arranged at one end of tensile axis 4, one end of tensile axis 4 be positioned at
One end in kettle 2；The inside of tensile axis 4 is hollow structure.
Specifically, heater 1 can be heating furnace, for heating to kettle 2.
In the present embodiment, specifically, test material is processed into test electrode slice, as the present embodiment
In working electrode 61.Reference electrode 62 can be standard hydrogen electrode (Standard Hydrogen
Electrode, abbreviation SHE), Ag/AgCl, Hg/Hg2Cl2Electrode.Auxiliary electrode 63 can be Pt
Electrode.
Specifically, actuating device 5 can be electromotor or variable-speed motor, for driving tensile axis 4
High-speed rotation in kettle 2.
In the present embodiment, specifically, kettle 2 and kettle cover 3 adopt CrNi18Ti9Rustless steel is processed into,
Kettle cover 3 is fastenedly connected with kettle 2 by circumferential equally distributed autoclave fastening bolt；In addition, kettle
2 section is U-shaped, and the shape of kettle cover 3 can be circle, can for square can also be other shapes,
The present invention is not specifically limited to this, it should be noted that kettle cover 3 shape will be with the shape of kettle 2
Match to reach the effect of sealing kettle 2.
Alternatively, first electrode mouth 31 and second electrode mouth 32 can be screw, reference electrode 62 and auxiliary
Help electrode 6 can be connected with first electrode mouth 31 and second electrode mouth 32 by external thread sleeve, working electrode
Can also be attached with the installing hole on kettle cover 3 by electrode external thread sleeve.In addition, first electrode mouth 31
Can be not specifically limited apart from the distance of tensile axis 4 with second electrode mouth 32, in order to ensure working electrode
Sufficiently corroded, alternatively, between first electrode mouth 31 and second electrode mouth 32 and tensile axis 4
Distance identical.
In the present embodiment, the inside of tensile axis 4 is hollow structure, specifically, is set to drawing of hollow
The inside stretching axle 4 can be used to placement wire, and working electrode 61 is passed through wire and electrochemical workstation
Connect, and obtain the test anticorrosive situation of tubing and the corrosion inhibition of corrosion inhibiter from electrochemical workstation.
The reactor that the present invention provides, by working electrode is arranged on one end that tensile axis are located in kettle,
Reference electrode and auxiliary electrode are passed through the electrode ports on kettle cover to insert in kettle, form three-electrode system,
And the inside of tensile axis is set to hollow, working electrode can be made to pass through wire and to be connected with electrochemical workstation,
The present invention utilizes three-electrode system to increase speed and the ability of working electrode receiving and losing electrons, overcomes existing skill
In art, the slower shortcoming of tubing corrosion, accelerates working electrode corrosion rate in corrosion inhibiter, can be quick
To the anticorrosive situation of working electrode and the corrosion inhibition of corrosion inhibiter, and test the anticorrosive situation of tubing
Directly can obtain from electrochemical workstation with the corrosion inhibition of corrosion inhibiter, need not again working electrode be taken
Go out, overcome the shortcoming observing inconvenience in prior art, can easily obtain the anticorrosive shape of working electrode
Condition and the corrosion inhibition of corrosion inhibiter.
The structural representation of the reactor that Fig. 3 provides for the embodiment of the present invention two, as shown in figure 3, upper
On the basis of stating the technical scheme of embodiment, working electrode 61 is disk electrode.
Then the reactor in the present embodiment also includes：For installing the working electrode platform 7 of disk electrode,
Wherein, working electrode platform 7, in kettle 2, and is set in the outside of tensile axis 4.
In addition, reactor can also include：O-ring seal 71, wherein disk electrode upper and lower ends adopt
O-ring seal 71 is connected with working electrode platform 7.
In the present embodiment, specifically, working electrode platform will match it is ensured that disk with disk electrode
Electrode only has outer surface to contact with the solution in kettle, the inside of disk electrode will with tensile axis 4
Hollow structure communicates, and is that wire creates an environment not having to corrode with connecting of working electrode, it is to avoid lead
Line is corroded it is ensured that the accuracy of Corrosion results.
In addition, Fig. 4 is the top view of Fig. 3, the reactor providing in conjunction with Fig. 3 and Fig. 4, the present embodiment,
Also include：Intake valve 8 and air outlet valve 9, wherein, intake valve 8 and air outlet valve 9, it is installed in kettle cover 3
Side, and connected with kettle 2 by pipeline.
In the present embodiment, the pipeline of connection intake valve and kettle and the pipeline connecting air outlet valve and kettle
All it is provided on kettle cover.
In the present embodiment, kettle cover 3 is additionally provided with kettle cover handle 33, wherein, kettle cover handle 33
Quantity at least two, is evenly distributed on the side of kettle cover 3, and Fig. 4 is to enter taking 3 kettle cover handles as a example
Row explanation.
Adjusted in kettle 2 by arranging intake valve 8 and air outlet valve 9 in a kettle. in the present embodiment
Gas content is it is ensured that the pressure value in the kettle of reactor meets the etching condition of test tubing.
The structural representation of the reactor that Fig. 5 provides for the embodiment of the present invention three；As shown in figure 5, upper
On the basis of stating the technical scheme of embodiment, the reactor that the present embodiment provides, also include：It is arranged on work
Make the stirring paddle 10 of the lower end of electrode platform 7, and for sealing the nut plug 11 of tensile axis 4, and
It is arranged on the nut plug 11 of the lower end of stirring paddle 10.
Alternatively, stirring paddle 10 is processed into stainless steel material, and outer surface is provided with anti-corrosion knot
Structure, has certain corrosion resistance.Stirring paddle 10 is set in the present embodiment, is on the one hand to ensure that heating dress
Put and the solution in kettle 2 is uniformly heated, be on the other hand to ensure that mixing effect, make molten in kettle 2
Liquid is fully and working electrode contact.
In the present embodiment, block up 11 by arranging nut, on the one hand can avoid stirring paddle 10 at a high speed
Come off in rotation, be on the other hand to block tensile axis 4, it is to avoid the wire quilt in setting tensile axis 4
Solution corrosion in kettle 2.
The structure chart of the reactor that Fig. 6 provides for the embodiment of the present invention four；As shown in fig. 6, in above-mentioned reality
On the basis of applying the technical scheme of example, the reactor that the present embodiment provides, also include：For measuring kettle
The thermocouple 12 of temperature and the temperature-measuring casing 13 for protecting thermocouple 12 in 2；Wherein, thermocouple 12,
By the installing hole on kettle cover 3, it is inserted in kettle 2；Temperature-measuring casing 13 is set in thermocouple 12
Outside.
Specifically, the outer surface of temperature-measuring casing 13 has corrosion-resistant coating (not shown).In this enforcement
In example, setting thermocouple 12 is to measure the temperature in kettle 2 it is ensured that the temperature in kettle 2 meets
The etching condition of test tubing.
In addition, in the present embodiment, also include：For measuring the speed measuring device 14 of tensile axis 4 rotating speed；
Wherein, speed measuring device 14 is arranged on the other end outside kettle 2 of tensile axis 4.
Specifically, in the present embodiment, setting speed measuring device 14 is to ensure that the rotating speed of tensile axis 4,
Ensure that the rotating speed of the solution in kettle meets the etching condition of test tubing.
In addition, in the present embodiment, also include：For adjusting the condensation water jacket 15 of the temperature of tensile axis 4；
Wherein, condense water jacket 15, be set in the outside of a part for tensile axis 4, a part for tensile axis 4 is
Part outside kettle 2.
Due to being hot environment in kettle 2, the temperature of the tensile axis 4 in insertion kettle 2 is also high, and draws
Stretching axle 4 needs to be connected with actuating device 5 by belt, and belt heat will normal work, directly
When being connected to, actuating device 5 can not drive tensile axis 4 to rotate.Therefore, in the present embodiment, by drawing
Stretch the partly sheathed condensation water jacket 15 that axle is connected with belt, so that belt normal work is it is ensured that actuating device
5 can normally drive tensile axis 4 to rotate.
In addition, in the present embodiment, also include：For measuring the pressure apparatus 16 of pressure in kettle 2；
Wherein, pressure apparatus 16, are arranged on kettle cover 3 side, and are connected with kettle 2 by pipeline.
Specifically, pressure apparatus 16 can be pressure gauge, capsule pressure gauge and diaphragm manometer.
In order to avoid reactor, because temperature is too high or pressure is excessive etc., that a series of emergency situations lead to is quick-fried
Fried, in the present embodiment, be also provided with safety blasting piece (not shown), safety blasting piece with
Pressure apparatus connects, and wherein safety blasting piece plays safety effect, when the pressure in reactor exceedes safety
During the threshold value of rupture disk, safety blasting sector-meeting bursts, by the pressure release in kettle, it is to avoid reactor is quick-fried
Fried.
The structural representation of the corrosion test system that Fig. 7 provides for the embodiment of the present invention five；As shown in fig. 6,
The corrosion test system that the present embodiment provides, including：Reactor and electrochemical workstation (not shown),
Wherein, electrochemical workstation is connected with reference electrode 62 and auxiliary electrode 63 respectively by wire, and leads to
The wire 17 of the inside setting of overstretching axle 4 is connected with working electrode 61, to realize electrochemical workstation
The measurement of the voltage of the working electrode 61 in the loop that working electrode 61 and reference electrode 62 are formed and work
Make the measurement of the electric current by working electrode in the loop that electrode 61 and auxiliary electrode 63 are formed, and
Polarization curve test to working electrode or electrochemical impedance test, to obtain the corruption of described working electrode
Erosion characteristic.
In the present embodiment, working electrode 61, reference electrode 62 and auxiliary electrode 63 and electrochemical operation
Stand after connection, two loops can be formed, one is working electrode 61 and returning that reference electrode 62 is formed
Road, for measuring the voltage of working electrode 61, another is that working electrode 61 is formed with auxiliary electrode 63
Loop, for measuring the electric current of working electrode 61.Specifically, polarization curve refers to working electrode
Relation between voltage and the electric current of working electrode, therefore can directly arrive according to electrochemistry platform measuring
The voltage and current of working electrode is drawing polarization curve.And the corruption of working electrode is obtained by polarization curve
Erosion characteristic is to have evolved into ripe technology, repeats no more here.
Wherein, this reactor can be above-described embodiment one to the arbitrary shown equipment of example IV, in fact
Existing principle and beneficial effect are similar, and here is omitted.
In conjunction with Fig. 6 and specific corrosion test system application example, to enforcement provided in an embodiment of the present invention
Process illustrates, to further describe the corrosion test system of the present invention.
First, test material is processed into test electrode slice as working electrode 61, opens kettle cover 3, lead to
The wire column crossing wire with working electrode 61 is connected, then by reference electrode 62, working electrode 61, auxiliary
Help the electrode external thread sleeve of electrode 63 and the installing hole on kettle cover 3 to be attached, subsequently test solution is poured into
In kettle 2, the level control of test solution, under wire junction point, subsequently adopts autoclave to fasten spiral shell
Bolt is sealed kettle cover 3 it is ensured that reactor is air tight with kettle 2,
Open intake valve 8, be filled with test gases in kettle 2 and remove remaining air in kettle 2, continue
Continue and be filled with test gases to the partial pressure specified, be then shut off intake valve 8 and start to warm up.By thermocouple 12
It is inserted in temperature-measuring casing 13, adjust heater 1 temperature required to corrosion testing.When kettle 2 interior temperature
Degree reach corrosion testing temperature required when, inflated with nitrogen mends the corrosion testing desirable pressure specified, and adjusts and passes
Dynamic device 5 is to the required rotating speed of test, and is passed through recirculated cooling water in condensation water jacket 15.Kettle interior temperature
After degree, pressure and rotating speed reach setting value, by reference electrode, working electrode, auxiliary electrode wire column
It is attached with electrochemical workstation, carries out electro-chemical test, method of testing is to adopt corrosion electrochemistry
In research, the corrosion characteristics of working electrode are entered by the test of conventional polarization curve or electrochemical impedance test
Row research.
In the present embodiment, by electrochemical workstation with reference electrode, working electrode and auxiliary electrode even
Connect, work electricity can be obtained by testing to the polarization curve test of working electrode or electrochemical impedance
The corrosion characteristics of pole, can quickly obtain the anticorrosive situation of working electrode and the corrosion inhibition of corrosion inhibiter,
Overcoming of the prior art needs to take out and just can observe that corrosion condition brings test tubing from kettle
Unhandy shortcoming.
Further, as shown in fig. 7, corrosion test system in the present embodiment, also include：For dividing
Other connecting wire and the elastomeric element 18 of working electrode.
Alternatively, elastomeric element 18 can be spring.
In the present embodiment, realize being flexible coupling of tensile axis and working electrode by arranging elastomeric element, can
With ensure during tensile axis high-speed rotation it is ensured that working electrode all the time with the wire within tensile axis
Realize electrical connection.
Finally it should be noted that：Various embodiments above is only in order to illustrating technical scheme rather than right
It limits；Although being described in detail to the present invention with reference to foregoing embodiments, this area common
Technical staff should be understood：It still can be modified to the technical scheme described in foregoing embodiments,
Or equivalent is carried out to wherein some or all of technical characteristic；And these modifications or replacement, and
Do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (10)
1. a kind of reactor is it is characterised in that include：Heater, it is arranged in described heater
Kettle, seal described kettle kettle cover, pass through described kettle cover and insert tensile axis in described kettle,
The actuating device being connected with described tensile axis, and three-electrode system；
Wherein, described three-electrode system includes：Working electrode, reference electrode and auxiliary electrode；
First electrode mouth and second electrode mouth are provided with described kettle cover；Described reference electrode passes through described the
One electrode ports are inserted in described kettle；Described auxiliary electrode inserts described kettle by described second electrode mouth
In；
Described working electrode is arranged at one end of described tensile axis, and one end of described tensile axis is positioned at described
One end in kettle；
The inside of described tensile axis is hollow structure.
2. reactor according to claim 1 is it is characterised in that described working electrode is disk electricity
Pole, then described reactor also include：For installing the working electrode platform of described disk electrode；
Wherein, described working electrode platform, in described kettle, and is set in the outer of described tensile axis
Side.
3. reactor according to claim 2 is it is characterised in that also include：Intake valve and giving vent to anger
Valve；
Wherein, described intake valve and described air outlet valve are installed in described kettle cover side, and by pipeline with
Described kettle connection.
4. the reactor according to Claims 2 or 3 is it is characterised in that also include：
It is arranged on the stirring paddle of the lower end of described working electrode platform, and for sealing described tensile axis
Nut plug, and it is arranged on the nut plug of the lower end of described stirring paddle.
5. reactor according to claim 4 is it is characterised in that also include：Described for measuring
The thermocouple of kettle body temperature, and for protecting the temperature-measuring casing of described thermocouple；
Wherein, described thermocouple, by the installing hole on described kettle cover, is inserted in described kettle；
Described temperature-measuring casing is set in the outside of described thermocouple.
6. reactor according to claim 5 is it is characterised in that also include：Described for measuring
The speed measuring device of stretching rotating speed；
Wherein, described speed measuring device is arranged at the other end of described tensile axis, the other end of described tensile axis
It is the one end outside described kettle.
7. reactor according to claim 6 is it is characterised in that also include：Described for adjusting
The condensation water jacket of the temperature of tensile axis；
Wherein, described condensation water jacket, is set in the outside of a part for described tensile axis, described tensile axis
A part be the part outside described kettle.
8. reactor according to claim 7 is it is characterised in that also include：Described for measuring
The pressure apparatus of pressure in kettle；
Wherein, described pressure apparatus, is arranged on described kettle cover side, and by pipeline with described kettle even
Logical.
9. a kind of corrosion test system is it is characterised in that include：Reaction as described in claim 1-8
Kettle and electrochemical workstation；
Wherein, described electrochemical workstation is connected with reference electrode and auxiliary electrode respectively by wire, and
It is connected with working electrode by the wire of the inside setting of tensile axis, to realize described electrochemical workstation root
According to the voltage of the working electrode in the loop that described working electrode and described reference electrode are formed measurement and
The survey of the electric current by described working electrode in the loop of described working electrode and the formation of described auxiliary electrode
Amount, and the polarization curve test to described working electrode or electrochemical impedance test, described to obtain
The etching characteristic of working electrode.
10. corrosion test system according to claim 9 is it is characterised in that also include：For
Connect the elastomeric element of described wire and described working electrode respectively.
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