CN108088714A - A kind of catalytic cracking dirt sample and preparation method and application - Google Patents
A kind of catalytic cracking dirt sample and preparation method and application Download PDFInfo
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- CN108088714A CN108088714A CN201711207773.7A CN201711207773A CN108088714A CN 108088714 A CN108088714 A CN 108088714A CN 201711207773 A CN201711207773 A CN 201711207773A CN 108088714 A CN108088714 A CN 108088714A
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- 238000004523 catalytic cracking Methods 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 26
- 238000007750 plasma spraying Methods 0.000 claims abstract description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000007788 roughening Methods 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 44
- 238000000576 coating method Methods 0.000 claims description 44
- 230000000694 effects Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 238000012216 screening Methods 0.000 claims description 9
- 230000002265 prevention Effects 0.000 claims description 8
- 238000005422 blasting Methods 0.000 claims description 6
- 239000012159 carrier gas Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 10
- 239000004615 ingredient Substances 0.000 abstract description 7
- 238000007670 refining Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 239000010963 304 stainless steel Substances 0.000 description 6
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000005488 sandblasting Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005464 sample preparation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0096—Testing material properties on thin layers or coatings
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention belongs to oil refining industry catalytic cracking unit technical field of surface, and in particular to a kind of catalytic cracking dirt sample and preparation method and application.The preparation method of the catalytic cracking dirt sample, comprises the following steps：Basis material is subjected to surface roughening treatment, obtains the basis material after the roughening of surface；To the 2 catalytic cracking catalyst powders of substrate material surface plasma spraying MMC after the roughening treatment of surface, catalytic cracking dirt sample is obtained.Catalytic cracking dirt sample provided by the invention has higher bond strength with metallic matrix, and dirty sample cohesive strength is larger.And other compositions need not be re-introduced into, dirty sample is promoted to be formed, scale sample ingredient prepared by plasma spraying is not much different with catalyst powder ingredient.
Description
Technical field
The invention belongs to oil refining industry catalytic cracking unit technical field of surface, and in particular to a kind of catalytic cracking dirt
Sample and preparation method and application.
Background technology
In oil refining industry, catalytic cracking flue gas turbine (abbreviation smoke machine) is that the thermal energy of high-temperature flue gas is converted into machinery
Can, and drive main air blower or generator operation.Realize the power-equipment of energy conversion.Organic efficiency has up to more than 130%
Significant energy-saving effect.
Third-stage cyclone separator (referred to as three revolve) is the key that catalytic cracking unit exhanst gas outlet energy-recuperation system is set
One of standby, the height of efficiency directly affects the normal use of smoke machine in operational process.The smoke machine main shaft during industry park plan
It is one of FAQs that vibration exceeding the standard, which causes non-normal stop, and basic reason is that smoke machine blade wear and fouling of catalyst are made
Into.In recent years, the problem of continuously improving with catalytic cracking process, the use of new catalyst and raw material oil quality, is drawn
Three rotations risen and smoke machine scale problems become increasingly conspicuous, and have seriously affected the long-term operation of energy-recuperation system.
Smoke machine internal incrustation particularly smoke machine movable vane surface scale problem is increasingly severe, serious to destroy the dynamic flat of rotor
Weighing apparatus gently then causes smoke machine vibration exceeding the standard to shut down, heavy then cause the collision of movable vane and outer rim, and fracture blade.The smoke machine of some oil plants
Scale removal will be shut down by often having run some months, can not be synchronous with the overhaul of whole equipment, because failure frequent shutdown reduces pair
The recycling efficiency of high-temperature flue gas, energy consumption rise, and even cause the unplanned shutdown of whole device sometimes, this is seriously affected
The economic benefit of enterprise causes huge economic loss.Therefore, the exploitation of flue gas turbine expander good antiscale property method has important meaning
Justice.
Coating protection is one of method for carrying out three rotation single tubes and turbine blade fouling improvement, and the preparation of dirty sample is
Carry out the Research foundation to interact between coating and dirty sample.The fouling of catalyst will often be undergone on three rotation single tubes, flue gas turbine expander
Some months could be formed, and dirty sample is in irregular shape.If the regular sample of dirty sample can be prepared, be conducive to coating and dirty sample
Study on Compatibility facilitates the screening of protective coating.
Wang Yu et al. (Wang Yu, Xing Shaowei, in Wang Jianjun catalytic cracking flue gas turbines the experiment of fouling of catalyst mechanism grind
Study carefully [J] China powder technology, 22 (1), 2016,92-96.) in terms of dirty sample preparation, it is static high using being carried out in high-temperature electric resistance furnace
Warm sintering experiment, heating furnace simulate the working environment in smoke machine, with placing equivalent on the test specimen of smoke machine movable vane phase same material
Catalytic unit flue gas turbine inlet catalyst sample is sintered experiment to prepare dirty sample.Hu Renbo et al. (Hu Renbo, Bai Rui, Zhao Jin
Chong, wait catalytic cracking three revolve catalyst fines sintering and mechanism of scaling [J] China University Of Petroleum Beijing's journals (natural science edition), 37
(4), it is also 2013,169-173.) that we selected typical catalytic cracking unit three revolves fine powder for research object, at different temperatures to three
Rotation fine powder carries out roasting experiment.Catalyst fines main component is aluminium oxide and silica.Above-mentioned sintering method there are the shortcomings that
It is that dirty sample itself cohesive strength is not high and not be bonded with parent metal.
In terms of the preparation of catalytic cracking fouling sample, not disclosed at present is prepared using plasma spraying method.
The content of the invention
For overcome the deficiencies in the prior art and shortcoming, it is an object of the invention to provide a kind of systems of catalytic cracking dirt sample
Preparation Method.
The catalytic cracking dirt sample being prepared another object of the present invention is to provide above-mentioned preparation method.
It is still another object of the present invention to provide the applications of above-mentioned catalytic cracking dirt sample.
Fourth object of the present invention is to provide a kind of method of scale prevention coating screening.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of catalytic cracking dirt sample, comprises the following steps：
(1) basis material is subjected to surface roughening treatment, obtains the basis material after the roughening treatment of surface；
(2) the substrate material surface plasma spraying MMC-2 catalytic cracking after surface roughening treatment in step (1) is catalyzed
Agent powder obtains catalytic cracking dirt sample；
Basis material described in step (1) is preferably 304 stainless steels or GH864 alloys；
Surface roughening treatment described in step (1) is preferably blasting treatment；
The Ra values of the basis material after the roughening treatment of surface described in step (1) are preferably 12.5~25 μm；Roughness
Excessively high one is that economy is caused to decline, second is that the pit of matrix possibly can not be covered after dirty sample spraying, influences to apply, appropriate
Roughness contributes to the combination of dirty sample and matrix；
The Ra values of the basis material after the roughening treatment of surface described in step (1) are more preferably 15~21 μm；
The preparation standard of MMC-2 catalytic cracking catalyst powders described in step (2) is preferably Q/SH 3610236-
2015；
The condition of plasma spraying described in step (2) is preferably：Spray voltage be 55~60V, spraying current 700
~800A, main air pressure are by force 55~65PSI, and carrier gas pressure is 45~55PSI, and powder feeder rotating speed is 3~5rpm；
A kind of catalytic cracking dirt sample, is prepared by above-mentioned preparation method；
Application of the catalytic cracking dirt sample in scale prevention coating screening field；
A kind of method of scale prevention coating screening, comprises the following steps：
In above-mentioned catalytic cracking dirt sample surface prepares coating sample, if dirty sample is not bonded with coating sample, illustrate coating
Sample has antiscaling effect；If dirty sample is bonded with coating sample, illustrate that coating sample does not have antiscaling effect；
Or directly on the basis material of applying coating sample prepare catalytic cracking dirt sample, if it is obtained dirt sample not with
Coating sample bonds, and illustrates that coating sample has antiscaling effect；If dirty sample is bonded with coating sample, illustrate that coating sample does not have
There is antiscaling effect；
The present invention is had the following advantages compared with the prior art and effect：
(1) catalytic cracking dirt sample provided by the invention has higher bond strength, dirty sample cohesive strength with metallic matrix
It is larger.
(2) present invention need not be re-introduced into other compositions dirty sample is promoted to be formed, scale sample ingredient prepared by plasma spraying with
Catalyst powder ingredient is not much different, the preliminary screening available for oil refining industry catalytic cracking unit surface scale prevention coating.
(3) present invention is easy to operate, at low cost.
Description of the drawings
Fig. 1 is the scanning electron microscope shape appearance figure of MMC-2 catalyst powders.
Fig. 2 is catalytic cracking dirt sample exterior appearance figure made from plasma spraying method.
Specific embodiment
With reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
In embodiment, it is 361 0236-2015 of Q/SH that MMC-2 catalytic cracking catalysts powder, which prepares standard,；
Embodiment 1
(1) by the 304 stainless steel specimen surface sandblastings of 50 × 50 × 5mm, roughness Ra is 15.3 μm；
(2) using 3710 plasma spraying equipments to 304 stainless steel surface plasma sprays after blasting treatment in step (1)
MMC-2 catalytic cracking catalyst powders are applied, wherein, the output voltages of 3710 plasma spraying equipments is 58V, electric current 750A,
Main air pressure is by force 60PSI, and carrier gas pressure is 50PSI, and powder feeder rotating speed is 4.5rpm, by spraying secondary control thickness, is obtained
Catalytic cracking dirt sample；
Catalytic cracking dirt sample surface made from the present embodiment is white, and exterior appearance is shown in Fig. 2.By detection, dirty sample thickness
It is 250~280 microns to spend scope.
Embodiment 2
(1) by the 304 stainless steel pull head surface sand-blastings of Φ 40mm, roughness Ra is 17.6 μm；
(2) using 3710 plasma spraying equipments to 304 stainless steel surface plasma sprays after blasting treatment in step (1)
MMC-2 catalytic cracking catalyst powders are applied, wherein, the output voltages of 3710 plasma spraying equipments is 58V, electric current 750A,
Main air pressure is by force 60PSI, and carrier gas pressure is 50PSI, and powder feeder rotating speed is 4.5rpm, by spraying secondary control thickness, is obtained
Catalytic cracking dirt sample；
By detection, pull head Φ 40mm cylindrical end dirty complexion sample layer thickness scope is 235~253 microns.According to GB/T
8642-2002《The measure of hot-spraying coating resisting binding strength》, the bond strength of the dirt sample layer and matrix is measured as 36MPa,
Separation betides the interface of dirty layer and matrix, illustrates that the cohesive strength of the dirt sample is more than 36MPa.
Embodiment 3
(1) by the GH864 alloy pull head surface sand-blastings of Φ 40mm, roughness Ra is 16.1 μm；
(2) using 3710 plasma spraying equipments to GH864 alloy pull heads surface after blasting treatment in step (1) etc. from
Son spraying MMC-2 catalytic cracking catalyst powders, wherein, the output voltage of 3710 plasma spraying equipments is 55V, and electric current is
800A, main air pressure are by force 55PSI, and carrier gas pressure is 55PSI, and powder feeder rotating speed is 3rpm, by spraying secondary control thickness, is obtained
To catalytic cracking dirt sample；
By detection, pull head Φ 40mm cylindrical end dirty complexion sample layer thickness scope is 341~373 microns.According to GB/T
8642-2002《The measure of hot-spraying coating resisting binding strength》, the bond strength of the dirt sample layer and matrix is measured as 24MPa,
Separation betides the interface of dirty layer and matrix, illustrates that the cohesive strength of the dirt sample is more than 24MPa.
Embodiment 4
(1) by the 304 stainless steel pull head surface sand-blastings of Φ 40mm, roughness Ra is 20.5 μm；
(2) using 3710 plasma spraying equipments to 304 stainless steel pull head surfaces after blasting treatment in step (1) etc. from
Son spraying MMC-2 catalytic cracking catalyst powders, wherein, the output voltage of 3710 plasma spraying equipments is 60V, and electric current is
700A, main air pressure are by force 65PSI, and carrier gas pressure is 45PSI, and powder feeder rotating speed is 5rpm, by spraying secondary control thickness, is obtained
To catalytic cracking dirt sample；
By detection, pull head Φ 40mm cylindrical end dirty complexion sample layer thickness scope is 588~636 microns.According to GB/T
8642-2002《The measure of hot-spraying coating resisting binding strength》, the bond strength of the dirt sample layer and matrix is measured as 5.5MPa,
Separation betides the interface of dirty layer and matrix, illustrates that the cohesive strength of the dirt sample is more than 5.5MPa.
In addition, table 1 is using the powder constituents of the MMC-2 of X-ray energy disperse spectroscopy test, shape appearance figure is as shown in Figure 1, main
Grain size is wanted to be between 19~84 microns.Table 2 is the present embodiment using the dirty sample formed after MMC-2 powder plasma sprayings
The ingredient of layer, it can be seen that the two is closer on ingredient, and plasma spraying can be used as dirt original mold draw up a kind of standby method.
1 MMC-2 powder constituents of table
| Element | Wt% | At% |
| C | 10.13 | 15.89 |
| O | 46.08 | 54.25 |
| Al | 25.79 | 18.00 |
| Si | 16.40 | 11.00 |
| P | 00.44 | 00.27 |
| S | 00.58 | 00.34 |
| Cl | 00.19 | 00.10 |
| Ti | 00.39 | 00.15 |
The dirty composition of layer of 2 plasma spraying of table
| Element | Wt% | At% |
| C | 06.04 | 09.68 |
| O | 48.74 | 58.65 |
| Al | 24.66 | 17.59 |
| Si | 20.29 | 13.91 |
| P | 00.27 | 00.17 |
Embodiment 5
A kind of method of scale prevention coating screening, comprises the following steps：
In catalytic cracking dirt sample surface prepares coating sample, if dirty sample is not bonded with coating sample, illustrate coating sample
With antiscaling effect；If dirty sample is bonded with coating sample, illustrate that coating sample does not have antiscaling effect；
Or directly on the basis material of applying coating sample prepare catalytic cracking dirt sample, if it is obtained dirt sample not with
Coating sample bonds, and illustrates that coating sample has antiscaling effect；If dirty sample is bonded with coating sample, illustrate that coating sample does not have
There is antiscaling effect.
The present invention need not be re-introduced into other compositions and dirty sample is promoted to be formed, scale sample ingredient and catalysis prepared by plasma spraying
Agent powder constituents are not much different, and catalytic cracking dirt sample obtained has higher bond strength, and dirty sample cohesive strength is larger, can use
In the preliminary screening of oil refining industry catalytic cracking unit surface scale prevention coating.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention and from above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of catalytic cracking dirt sample, it is characterised in that comprise the following steps：
(1) basis material is subjected to surface roughening treatment, obtains the basis material after the roughening treatment of surface；
(2) to the substrate material surface plasma spraying MMC-2 catalytic cracking catalyst powder after surface roughening treatment in step (1)
Body obtains catalytic cracking dirt sample.
2. the preparation method of catalytic cracking dirt sample according to claim 1, it is characterised in that：
Basis material described in step (1) is 304 stainless steels or GH864 alloys.
3. the preparation method of catalytic cracking dirt sample according to claim 1, it is characterised in that：
Surface roughening treatment described in step (1) is blasting treatment.
4. the preparation method of catalytic cracking dirt sample according to claim 3, it is characterised in that：
The Ra values of the basis material after the roughening treatment of surface described in step (1) are 12.5~25 μm.
5. the preparation method of catalytic cracking dirt sample according to claim 4, it is characterised in that：
The Ra values of the basis material after the roughening treatment of surface described in step (1) are 15~21 μm.
6. the preparation method of catalytic cracking dirt sample according to claim 1, it is characterised in that：
The preparation standard of MMC-2 catalytic cracking catalyst powders described in step (2) is Q/SH 3610236-2015.
7. the preparation method of catalytic cracking dirt sample according to claim 1, it is characterised in that：
The condition of plasma spraying described in step (2) is：Spray voltage is 55~60V, and spraying current is 700~800A,
Main air pressure is by force 55~65PSI, and carrier gas pressure is 45~55PSI, and powder feeder rotating speed is 3~5rpm.
8. a kind of catalytic cracking dirt sample, it is characterised in that be prepared by claim 1~7 any one of them preparation method
It arrives.
9. application of the catalytic cracking dirt sample in scale prevention coating screening field described in claim 8.
A kind of 10. method of scale prevention coating screening, it is characterised in that comprise the following steps：
In above-mentioned catalytic cracking dirt sample surface prepares coating sample, if dirty sample is not bonded with coating sample, illustrate coating sample
With antiscaling effect；If dirty sample is bonded with coating sample, illustrate that coating sample does not have antiscaling effect；
Or directly on the basis material of applying coating sample prepare catalytic cracking dirt sample, if it is obtained dirt sample not with coating
Sample bonds, and illustrates that coating sample has antiscaling effect；If dirty sample is bonded with coating sample, it is anti-to illustrate that coating sample does not have
Dirty effect.
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| CN106906437A (en) * | 2017-02-24 | 2017-06-30 | 中国船舶重工集团公司第七二五研究所 | A kind of turbine blade high corrosion resistant scale prevention coating and its preparation technology |
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2017
- 2017-11-27 CN CN201711207773.7A patent/CN108088714A/en active Pending
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