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Concrete chimney leakage proofing method for producing ammonium sulfate

A technology of concrete and ammonium sulfate, applied in combustion methods, combustion product treatment, exhaust gas devices, etc., can solve problems such as volume expansion and concrete damage, and achieve the effect of prolonging service life

Inactive Publication Date: 2014-01-29
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The generated calcium sulfate will be crystallized as dihydrate gypsum, and the volume will expand at the same time, causing damage to the concrete.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Cement preparation

[0025] The cement used is made of vinyl ester resin, 50% cyclohexanone peroxide paste, cobalt naphthenate styrene solution, and barite powder. The mass ratio of its components is as follows:

[0026] Vinyl ester resin 100 Kg 50% cyclohexanone peroxide paste 3 Kg Cobalt naphthenate styrene solution 2 Kg

[0027] 150 Kg of 150-200 mesh barite powder;

[0028] Stir the above components in the container evenly and set aside;

[0029] (2) Pretreatment of the inner surface of the chimney

[0030] Repair the inner surface of the chimney with epoxy mortar, fully cured, and the moisture content within 20mm of the inner surface of the base layer is 2%-6%;

[0031] (3) Apply the prepared cement evenly to the inner surface of the chimney, with a thickness of 3-5mm to form a closed anti-seepage coating;

[0032] (4) After the cement dries out, line the surface with a layer of acid-resistant bricks.

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Abstract

The invention discloses a concrete chimney leakage proofing method for producing ammonium sulfate. The concrete chimney leakage proofing method includes steps of (1), preparing plaster by 100 parts of vinyl ester resin, 2-4 parts of 50% cyclohexanone peroxide, 0.5-4 parts of cobalt naphthenate styrene solution and 150-200 parts of barite powder according to weight; (2), subjecting a chimney to inner surface pretreating; (3), uniformly coating the prepared plaster to the inner surface of the chimney to form a sealed leakage-proof layer; (4), lining acid-proof bricks on the surface of the dried plaster. The leakage-proof coating layer and the acid-proof bricks act together to realize unexpected leakage-proof effect, the chimney which is repaired once a year before is now repaired once five years, and the service life of the chimney is remarkably prolonged.

Description

technical field [0001] The invention relates to a method for preventing ammonium sulfate corrosion and leakage, in particular to a method for preventing leakage of a concrete chimney for producing ammonium sulfate. Background technique [0002] Ammonium sulfate, also known as ammonium sulfate, as a chemical fertilizer product, contains two nutrients, nitrogen and sulfur, and is one of the main fertilizers in modern agriculture and forestry industries. The granular ammonium sulfate produced with phosphogypsum as raw material contains 1-3% ammonium sulfate in the discharge after exhaust gas washing. Because ammonium sulfate has a corrosion and destructive effect, although the chimney is lined with acid-resistant bricks, the chimney still remains after a period of use. Leakage of the outer wall occurs, which reduces the strength of the chimney, affects the safety of the chimney, and causes environmental pollution. [0003] The mechanism of ammonium sulfate damage chimney is as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J13/02C04B26/04
Inventor 赵兵张元海
Owner WENGFU (GRP) CO LTD
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