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Middle scale sample, preparation method thereof and application of sample

A technology of scale sample and base powder, applied in the field of intermediate scale sample and its preparation, can solve the problems of non-adhesion of base metal and low cohesive strength of scale sample, and achieve the effect of high cohesive strength

Active Publication Date: 2018-05-29
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the composition is close to that of industrial scale, the disadvantages of the above-mentioned sintering method are that the scale itself has low cohesive strength and is not bonded to the base metal.

Method used

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  • Middle scale sample, preparation method thereof and application of sample
  • Middle scale sample, preparation method thereof and application of sample
  • Middle scale sample, preparation method thereof and application of sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Mix 0.88g calcium chloride, 2.77g ferrous sulfate, 2.81g nickel sulfate and 93.54g MMC-2 catalyst (the powder preparation standard is Q / SH 361 0236-2015) to obtain the basic powder (JCF) ;

[0045] (2) Mix 14g of the basic powder (JCF) prepared in step (1) with 6g of binder aluminum dihydrogen phosphate to obtain a blended powder (GHF), then add 12ml of distilled water to obtain a blended slurry (GHLJ -1);

[0046] (3) Prepare a 304 stainless steel sample with a specification of 50×50×5mm, and place a 304 stainless steel square frame (outer size 50mm×50mm×5mm, inner size 45mm×45mm×5mm) on the surface of the sample; put step (2) The prepared blended slurry (GHLJ-1) is coated on the surface of the sample, so that the slurry fills the frame, and the sample coated with the slurry is placed in a sintering furnace for sintering. The sintering temperature is 700 ° C and kept for 2 hours. ; Then close the heat preservation program, the sample is cooled to room temperature...

Embodiment 2

[0049] (1) Mix 0.88g calcium chloride, 2.77g ferrous sulfate, 2.81g nickel sulfate and 93.54g MMC-2 catalyst (the powder preparation standard is Q / SH 361 0236-2015) to obtain the basic powder (JCF) ;

[0050] (2) Mix 12g of the basic powder (JCF) prepared in step (1) with 8g of binder aluminum dihydrogen phosphate to obtain a blended powder (GHF), then add 11ml of distilled water to obtain a blended slurry (GHLJ -2);

[0051](3) Prepare a 304 stainless steel sample with a specification of 50×50×5mm, place a 304 stainless steel square frame (outer size 50mm×50mm×5mm, inner size 45mm×45mm×5mm) on the surface of the sample, and place the step (2) The prepared blended slurry (GHLJ-2) is coated on the surface of the sample, so that the slurry fills the frame, and the sample coated with the slurry is placed in a sintering furnace for sintering. The sintering temperature is 750 ° C and kept for 4 hours. ; Then close the heat preservation program, the sample is down to room temperat...

Embodiment 3

[0054] (1) Mix 0.88g calcium chloride, 2.77g ferrous sulfate, 2.81g nickel sulfate and 93.54g MMC-2 catalyst (the powder preparation standard is Q / SH 361 0236-2015) to obtain the basic powder (JCF) ;

[0055] (2) Mix 10g of the basic powder (JCF) prepared in step (1) with 10g of binder aluminum dihydrogen phosphate to obtain a blended powder (GHF), then add 13ml of distilled water to obtain a blended slurry (GHLJ -3);

[0056] (3) Prepare a 304 stainless steel sample with a size of 50×50×5mm and spray NiCr-Cr3C2 coating on the surface. layer sample surface, the blended slurry (GHLJ-3) prepared in step (2) is coated on the NiCr-Cr3C2 coated sample surface, so that the slurry fills the square frame, and the coating sample coated with slurry The sample was placed in a sintering furnace for sintering, the sintering temperature was 680°C, and the temperature was kept for 3 hours; then the heat preservation program was turned off, and the sample was lowered to room temperature wit...

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Abstract

The invention belongs to the technical field of surface treatment of a catalytic cracking unit of oil refining industry, particularly relates to a middle scale sample, a preparation method thereof andan application of the sample. The middle scale sample comprises base powder and a binding agent, the base powder comprises, by weight, 0.88 part of calcium chloride, 2.77 parts of ferrous sulfate, 2.81 parts of nickel sulfate and 93.54 parts of MMC-2 catalysts. According to the middle scale sample, the calcium chloride, the ferrous sulfate, the nickel sulfate and the MMC-2 catalysts are mixed toobtain the base powder, the base powder is mixed with the binding agent to obtain blending powder, water is added into the blending powder to obtain blending slurry, and the blending slurry is sintered at high temperature and cooled to obtain the middle scale sample. The prepared middle scale sample easily forms scale, the cohesion strength of the scale sample is high, and the middle scale samplecan be used for preliminary screening of anti-scale coatings.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of catalytic cracking units in the oil refining industry, and in particular relates to an intermediate scale sample and its preparation method and application. Background technique [0002] In the oil refining industry, the catalytic cracking flue gas turbine (referred to as the smoke machine) is a power equipment that converts the heat energy of high-temperature flue gas into mechanical energy, and drives the main fan or generator to realize energy conversion. The recovery efficiency can reach more than 130%. It has remarkable energy-saving effect. [0003] The third-stage cyclone separator (abbreviated as three-cyclone) is one of the key equipment of the energy recovery system of the flue gas outlet of the catalytic cracking unit, and its efficiency during operation directly affects the normal use of the smoke machine. Abnormal shutdown caused by excessive vibration of the main shaft ...

Claims

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Application Information

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IPC IPC(8): G01N19/04G01N1/28
CPCG01N1/28G01N19/04
Inventor 石绪忠许康威余向飞武笑宇王松江张振千田耕付春龙
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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