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Crack resistance amorphous acid-proof pouring material, crack resistance acid-proof heat preservation protective layer and manufacturing method thereof

The technology of acid-resistant castable and protective layer is applied in the manufacture of the above-mentioned crack-resistant acid-resistant thermal insulation protective layer, and the field of crack-resistant acid-resistant thermal insulation protective layer can solve the problems of reducing thermal insulation performance, unable to prevent corrosion of equipment shell, and increasing thermal conductivity of thermal insulation layer. , to prevent the expansion of micro-cracks, good thermal insulation performance, good crack resistance

Active Publication Date: 2010-05-12
NANJING SHENGNUO HEAT PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in order to achieve good thermal insulation performance and reduce the overall weight of the equipment as much as possible in the above-mentioned existing pouring insulation layer, a large amount of porous materials are usually used in the pouring. Once the acid solution infiltrates, the thermal conductivity of the insulation layer will be increased and the insulation performance will be reduced. , and cannot prevent corrosion of the device case

Method used

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  • Crack resistance amorphous acid-proof pouring material, crack resistance acid-proof heat preservation protective layer and manufacturing method thereof
  • Crack resistance amorphous acid-proof pouring material, crack resistance acid-proof heat preservation protective layer and manufacturing method thereof
  • Crack resistance amorphous acid-proof pouring material, crack resistance acid-proof heat preservation protective layer and manufacturing method thereof

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Embodiment 1

[0050] Embodiment 1: A kind of amorphous acid-resistant thermal insulation material with anti-cracking ability, the raw material is:

[0051] (1) Water glass: the modulus is M2.6-3.0;

[0052] (2) Powdered sodium fluorosilicate or condensed aluminum phosphate: the particle size is less than 100 mesh;

[0053] (3) Porous ceramsite (irregular granular shape) fired with clay: the particle size is 5-40mm;

[0054] (4) Expanded perlite particles: particle size is 1-5mm;

[0055] (5) Diabase powder: the particle size is less than 200 mesh;

[0056] (6) Glass fiber yarn: diameter 0.2-1.5mm, length: 15-50mm.

[0057] The ratio of the above materials is 1 part (by weight) of water glass, 1 part of diabase powder, 0.17 of powdery sodium fluorosilicate, or 0.07 of condensed aluminum phosphate, 2 parts of irregular granular clay porous ceramsite, and expanded perlite particles 0.3, glass fiber yarn 0.02.

Embodiment 2

[0058] Embodiment 2: raw material composition is identical with embodiment 1, and each material proportioning is 1 part (weight) with water glass, powdery sodium fluorosilicate is 0.17, or condensed aluminum phosphate 0.07, diabase powder 2, irregular particle Clay porous ceramsite 3, expanded perlite particles 0.6, glass fiber yarn 0.03.

Embodiment 3

[0059] Embodiment 3: raw material component is identical with embodiment 1, and each material proportioning is 1 part (weight) with water glass, powdery sodium fluorosilicate is 0.16, or condensed aluminum phosphate 0.07, diabase powder 2.5, irregular Granular clay porous ceramsite 3.5, expanded perlite particles 0.8, glass fiber yarn 0.04.

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Abstract

The invention provides a crack resistance amorphous acid-proof pouring material applied to afterheat recycling equipment or chemical engineering equipment, and a heat preservation protective layer formed by using the pouring material and a manufacturing method thereof. The pouring material uses water glass as binding agent, sodium fluosilicate or condensed aluminium phosphate powder as curing agent, ceramsite and pearlite grains as heat preservation material, diabase powder and quartz sand as filling material, furfuryl alcohol as modifier, and glass fiber yarn as crack resistance reinforcing material. The heat preservation protective layer comprises a porous heat preservation layer and a dense impervious layer, preserves heat and prevents seepage of acid liquor. The pouring material can proof sulfuric acid, hydrochloric acid and the like of various concentration, has excellent crack resistance and can endure a temperature as high as 500 DEG C.

Description

technical field [0001] The invention relates to an amorphous castable used in energy-saving, environmental protection, metallurgy, and chemical industry fields, which require heat preservation and is also corroded by liquid acid, and in particular relates to an amorphous castable with crack resistance and impermeability material. [0002] The invention also relates to a crack-resistant, acid-resistant and heat-resisting protection layer formed by using the amorphous pouring material. [0003] The present invention also relates to a method for manufacturing the above-mentioned anti-crack, acid-resistant and thermal insulation protection layer. Background technique [0004] SO 2 During production, when the tail flue gas heat is recovered, when the temperature reaches below the dew point, sulfuric acid will condense, the concentration of condensed sulfuric acid is 93%, and the dew point temperature is generally 220°C. When concentrated sulfuric acid is above 50°C, it will gr...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B14/42
CPCC04B2111/2015C04B2111/26C04B2111/23C04B41/009C04B41/52C04B2111/343C04B28/26
Inventor 徐德新杨峻王明军王海燕李来所
Owner NANJING SHENGNUO HEAT PIPE
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