Corrosion resistant heat exchanger and strengthening technology thereof

A heat exchanger, corrosion-resistant technology, applied in anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve problems such as poor performance of condensers, achieve the effects of reducing viscosity, improving durability, and preventing flocculation

Inactive Publication Date: 2018-06-01
博维恩冷冻科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the distillation process, the device that converts the vapor into a liquid state is called a condenser. All condensers operate by taking away the heat of the gas or vapor; existing condensers usually have poor performance when used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a corrosion-resistant heat exchanger, which mainly includes a shell and heat exchange tubes arranged in the shell. The shell includes the following components by mass percentage:

[0037] C: 0.1%, Mn: 0.5%, Ni: 0.5%, Cr: 2%, Nb: 0.4%, Si: 0.1%, Fe: 0.2%, Mg: 1.5%, Cu≤0.2%, s≤0.015%, p≤0.025%, Mo: 0.3%, Ti: 0.3%, B: 0.02%, v: 0.0018%, compound rare earth: 0.2%, rare earth element: 0.2%, the balance is Al;

[0038]The composite rare earth includes the following components by weight percentage: praseodymium: 15%, holmium: 5%, gadolinium: 8%, yttrium: 8%, and the rest is lanthanum. The sum of the above composite rare earth components is 100%.

[0039] The strengthening process of the above-mentioned corrosion-resistant heat exchanger involves spraying a layer of anti-corrosion layer on the outside of the shell, which specifically includes the following steps:

[0040] (1) Slightly roughen the surface of the shell with fine sandpaper, then carry out...

Embodiment 2

[0047] This embodiment provides a corrosion-resistant heat exchanger, which mainly includes a shell and heat exchange tubes arranged in the shell. The shell includes the following components by mass percentage:

[0048] C: 0.3%, Mn: 0.8%, Ni: 0.7%, Cr: 4%, Nb: 0.6%, Si: 0.3%, Fe: 0.5%, Mg: 2.0%, Cu≤0.2%, s≤0.015%, p≤0.025%, Mo: 0.5%, Ti: 0.5%, B: 0.03%, v: 0.0022%, compound rare earth: 0.3%, rare earth element: 0.4%, the balance is Al;

[0049] The composite rare earth includes the following components by weight percentage: praseodymium: 18%, holmium: 8%, gadolinium: 10%, yttrium: 10%, and the rest is lanthanum. The sum of the above composite rare earth components is 100%.

[0050] The strengthening process of the above-mentioned corrosion-resistant heat exchanger involves spraying a layer of anti-corrosion layer on the outside of the shell, which specifically includes the following steps:

[0051] (1) Slightly roughen the surface of the shell with fine sandpaper, then carry ...

Embodiment 3

[0058] This embodiment provides a corrosion-resistant heat exchanger, which mainly includes a shell and heat exchange tubes arranged in the shell. The shell includes the following components by mass percentage:

[0059] C: 0.2%, Mn: 0.7%, Ni: 0.6%, Cr: 3, Nb: 0.5%, Si: 0.2%, Fe: 0.4%, Mg: 1.8%, Cu≤0.2%, s≤0.015%, p ≤0.025%, Mo: 0.4%, Ti: 0.4%, B: 0.04%, v: 0.0019%, compound rare earth: 0.1%, rare earth element: 0.3%, the balance is Al;

[0060] The composite rare earth includes the following components by weight percentage: praseodymium: 17%, holmium: 7%, gadolinium: 9%, yttrium: 9%, and the rest is lanthanum. The sum of the above composite rare earth components is 100%.

[0061] The strengthening process of the above-mentioned corrosion-resistant heat exchanger involves spraying a layer of anti-corrosion layer on the outside of the shell, which specifically includes the following steps:

[0062] (1) Slightly roughen the surface of the shell with fine sandpaper, then carry ou...

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PUM

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Abstract

The invention discloses a corrosion resistant heat exchanger comprising a shell and a heat exchange pipe arranged in the shell. The shell comprises, by mass, 0.1%-0.3% of C, 0.5%-0.8% of Mn, 0.5%-0.7%of Ni, 2%-4% of Cr, 0.4%-0.6% of Nb, 0.1%-0.3% of Si, 0.2%-0.5% of Fe, 1.5%-2.0% of Mg, no more than 0.2% of Cu, no more than 0.015% of s, no more than 0.025% of p, 0.3%-0.5% of Mo, 0.3%-0.5% of Ti,0.02%-0.03% of B, 0.0018%-0.0022% of v, 0.1%-0.3% of composite rare earth, 0.2%-0.4% of rare earth elements and the balance Al. The invention provides the corrosion resistant heat exchanger and a strengthening technology thereof; and the strengthening technology is simple and practicable, and the strengthened heat exchanger is high in corrosion resistance.

Description

technical field [0001] The invention designs a heat exchanger, and in particular relates to a corrosion-resistant heat exchanger and a strengthening process thereof. Background technique [0002] In the refrigeration system, the evaporator, condenser, compressor and throttling valve are four essential parts in the refrigeration system. Among them, the evaporator is a device that delivers cold energy, and the refrigerant absorbs the heat of the object to be cooled. To achieve refrigeration, the compressor is the heart, which plays the role of inhaling, compressing, and transporting refrigerant vapor. The condenser is a device that releases heat, and transfers the heat absorbed in the evaporator together with the heat converted by the compressor to the cooling medium. Go, the throttle valve plays the role of throttling and reducing the pressure of the refrigerant, and at the same time controls and adjusts the amount of refrigerant liquid flowing into the evaporator, and divide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C09D163/00C09D183/04C09D5/10C09D7/61C09D7/63C09D7/65
CPCC22C21/00C08K2003/0856C08K2003/0881C08K2003/2241C08K2201/011C08K2201/014C08L2205/03C09D5/10C09D163/00C09D183/04C08L83/04C08K13/04C08K3/22C08K7/26C08K3/08C08K7/08C08K3/346C08K3/40C09D183/00C08L63/04
Inventor 唐荣陆荣晓
Owner 博维恩冷冻科技(苏州)有限公司
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