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Inner protective coating of environment-friendly heat exchanger for waste steam heat energy recovery

A protective coating and heat recovery technology, applied in coatings, epoxy resin coatings, etc., can solve the problems of inability to reheat, limited service life, and high range of changes, so as to achieve good protection, ensure film formation, and avoid The effect of reunion

Pending Publication Date: 2022-07-22
山东艾凯恩环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Exhaust steam can be reheated and then used reciprocally; some exhaust steam may be polluted during use or cannot be reheated and can only be disposed of. At this time, its heat needs to be recovered. During the recovery process , generally need to experience periodic changes in pressure and temperature, and the range of changes is relatively high. In this kind of use environment, the existing heat exchanger is prone to metal fatigue and has a limited service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] S1. Modification:

[0040] Disperse 30g graphene into water with 30 times the mass (the base number is the total mass of graphene, zinc powder and copper powder), then carry out ultrasonic dispersion, and the dispersion time is 60min;

[0041] Then 40g of zinc powder, 5g of copper powder, and 1g of SiC are added to the water containing graphene, and the secondary dispersion adopts ball milling, and the ball milling time is not less than 20min;

[0042] Then disperse zinc powder and copper powder into water for secondary dispersion, and add CuNO after dispersion 3 , so that Cu 2+ The concentration is 0.1mol / L, then carry out oxidation treatment to obtain the mixed solution of modified graphene mixed with zinc powder and copper powder through oxidation treatment;

[0043] The oxidation treatment was carried out as follows: ozone was blown into the water, the concentration of the ozone was 150 mg / L, the oxidation temperature was 30° C., and the oxidation time was 5 min. ...

Embodiment 2

[0053] S1. Modification:

[0054] Disperse 40g graphene into water with 40 times the mass (the base number is the total mass of graphene, zinc powder and copper powder), then ultrasonically disperse for 60min;

[0055] Then add 50g zinc powder, 10g copper powder and 2g SiC into the water containing graphene, and the secondary dispersion adopts ball milling, and the ball milling time is not less than 20min;

[0056] Then disperse zinc powder and copper powder into water for secondary dispersion, and add CuNO after dispersion 3 , so that Cu 2+ The concentration is 0.1mol / L, then carry out oxidation treatment to obtain the mixed solution of modified graphene mixed with zinc powder and copper powder through oxidation treatment;

[0057] The oxidation treatment was carried out as follows: ozone was blown into the water, the concentration of the ozone was 200 mg / L, the oxidation temperature was 20° C., and the oxidation time was 5 min.

[0058] S2. Mix:

[0059] Add 80g epoxy resi...

Embodiment 3

[0067] S1. Modification:

[0068] Disperse 35g of graphene into water with 35 times the mass (the base number is the total mass of graphene, zinc powder and copper powder), then ultrasonically disperse for 60min;

[0069] Then 45g of zinc powder, 8g of copper powder and 1.5g of SiC are added to the water containing graphene, and the secondary dispersion adopts ball milling, and the ball milling time is not less than 20min;

[0070] Then disperse zinc powder and copper powder into water for secondary dispersion, and add CuNO after dispersion 3 , so that Cu 2+ The concentration is 0.1mol / L, then carry out oxidation treatment to obtain the mixed solution of modified graphene mixed with zinc powder and copper powder through oxidation treatment;

[0071] The oxidation treatment was carried out as follows: ozone was blown into the water, the concentration of the ozone was 180 mg / L, the oxidation temperature was 25° C., and the oxidation time was 5 min.

[0072] S2. Mix:

[0073]...

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Abstract

The invention discloses an inner protective coating of an environment-friendly heat exchanger for waste steam heat energy recovery. The inner protective coating is prepared from the following raw materials in parts by mass: 30-40 parts of graphene; 40 to 50 parts of zinc powder; 5 to 10 parts of copper powder; 60 to 80 parts of epoxy resin; and 5-10 parts of a curing agent. Epoxy resin is adopted as a base material, then graphene, zinc powder and copper powder are added, on the premise that the heat transfer effect is guaranteed, a good protection effect is achieved, and the coating is suitable for being used for coating the inner side of the heat exchanger.

Description

technical field [0001] The present application relates to an inner protective coating of an environment-friendly heat exchanger for heat energy recovery of spent steam. Background technique [0002] In a narrow sense, exhausted steam refers to the steam that has been exhausted from steam engines and steam turbines. Spent steam can be reheated, and then used for reciprocation; some of the spent steam may be polluted during use or cannot be reheated and can only be disposed of. At this time, its heat needs to be recovered. During the recovery process , generally need to experience periodic changes in pressure and temperature, and the amplitude of the changes is relatively high. The existing heat exchangers are prone to metal fatigue and have a limited service life in this use environment. SUMMARY OF THE INVENTION [0003] In order to solve the above-mentioned problems, the application proposes an inner protective coating of an environmental protection heat exchanger for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/62C09D7/61
CPCC09D163/00C09D7/62C09D7/61C08K2003/0893C08K2003/085C08K3/042C08K3/08C08K9/02C08K3/34
Inventor 庄庆臣
Owner 山东艾凯恩环保工程有限公司