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Construction method of furnace cavity liner of garbage incinerator

A waste incinerator and furnace lining technology, which is applied in the combustion method, incinerator, combustion type, etc., can solve the problems of waste, matrix deformation, high cost, save use and maintenance costs, and improve wear resistance and thermal conductivity. , Excellent thermal shock resistance

Active Publication Date: 2010-02-17
CHONGQING SANFENG COVANTA ENVIRONMENTAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Formed hanging brick construction has the advantages of small construction difficulty, uniform material thickness and short construction period, so it is widely used; but due to the unstable operation of the incinerator, there is a significant disadvantage of falling off, and it is not easy to maintain due to the deformation of the substrate after falling off
Spraying construction has the advantages of uniform construction, tight combination of materials, one-time forming and good stability, but due to the shortcomings of a large amount of material waste and high cost, it is rarely used in the construction of refractory materials for domestic waste incinerators
Ramming construction has the advantages of material saving, tight combination, and not easily deformed after forming, but ramming construction requires high technical level of construction personnel, strict requirements on materials selected for construction, and strict requirements on material thermal conductivity and construction thickness. It is difficult to meet the requirements for the operation of waste incinerators in terms of chemical stability, erosion resistance, wear resistance, peeling resistance and thermal shock resistance after ramming construction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The furnace lining construction method of the garbage incinerator of the present invention includes the steps of batching, ramming construction, anchoring and drying;

[0014] In the batching step, the ramming material comprises the following components by mass percentage: Fe 2 o 3 1.2%, Al 2 o 3 10%, SiC80%, silicate coupling agent 8.8%; silicate in silicate coupling agent includes aluminum, iron, calcium, magnesium, potassium, sodium and other silicates, which can reach this level during use. The desired effect of the invention.

[0015] In the ramming construction step, the ramming should be carried out continuously in blocks, and the ramming should be layered once to the design thickness, and each layer should be rammed 3-5 times.

[0016] In the anchoring step of this embodiment, the total height of the membrane wall of the waste incinerator in this embodiment is about 16.5 meters, and along the height direction of the membrane wall from the lower header (inc...

Embodiment 2

[0027] The furnace lining construction method of the garbage incinerator of the present invention includes the steps of batching, ramming construction, anchoring and drying;

[0028] In the batching step, the ramming material comprises the following components by mass percentage: Fe 2 o 3 1.5%, Al 2 o 3 7%, SiC74.5%, silicate coupling agent 17%

[0029] In the ramming construction step, the ramming should be carried out continuously in blocks, and the ramming should be layered once to the design thickness, and each layer should be rammed 3-5 times.

[0030] In this embodiment, conventional anchoring methods are used for anchoring.

[0031] In the drying step, the drying temperature is a constant temperature of 250°C.

[0032] After this embodiment was put into use for 36 months, it was tested that the ratio of ingredients, anchoring method and drying temperature used in this embodiment have more prominent advantages compared with the existing technology, but it is more ...

Embodiment 3

[0034] The furnace lining construction method of the garbage incinerator of the present invention includes the steps of batching, ramming construction, anchoring and drying;

[0035] In the batching step, the ramming material comprises the following components by mass percentage: Fe 2 o 3 1.3%, Al 2 o 3 8.7%, SiC 85%, silicate coupling agent 5%;

[0036] In the ramming construction step, the ramming should be carried out continuously in blocks, and the ramming should be layered once to the design thickness, and each layer should be rammed 3-5 times.

[0037] In this embodiment, conventional anchoring methods are used for anchoring.

[0038] In the drying step, the drying temperature is a constant temperature of 250°C.

[0039] After this embodiment was put into use for 36 months, it was tested that the ratio of ingredients, anchoring method and drying temperature used in this embodiment have more prominent advantages compared with the existing technology, but it is more...

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Abstract

The invention discloses a construction method of a furnace cavity liner of a garbage incinerator, comprising the following steps: material proportioning, ramming construction, anchoring and drying, wherein ramming materials in the material proportioning step comprise the following components in percentage by weight: 1.2-1.5% of Fe2O3, 7-10% of Al2O3, 72-85% of SiC and 5-17% of silicates couplant;and the drying temperature is a constant temperature of 250 DEG C in the drying step. The ramming materials have excellent chemical stability, abrasion resistance, anti-strip property and heat shock resistance, obviously enhanced abrasion resistance and heat conductivity, enhanced compressive strength and apparent porosity, simple construction and material saving; in addition, the constructed liner has the advantages of compact combination, difficult deformation after being formed, and the like; the service life of the liner of the garbage incinerator is prolonged; and the using and maintenance costs are saved.

Description

technical field [0001] The invention relates to a maintenance or new construction of a garbage incinerator in a power plant, in particular to a construction method for lining the furnace of a garbage incinerator. Background technique [0002] Waste incineration power generation has the advantages of capacity reduction, harmlessness, and energy saving, so it has developed relatively rapidly. [0003] The furnace lining of the waste incinerator is a necessary condition to ensure the normal operation of the incinerator. In the construction of refractory lining in the furnace of waste incinerator, forming and hanging brick construction, spraying construction and ramming construction are generally used. Formed hanging brick construction has the advantages of small construction difficulty, uniform material thickness and short construction period, so it is widely used; but due to the unstable operation of the incinerator, there is a significant disadvantage of falling off, and it ...

Claims

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Application Information

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IPC IPC(8): F23G5/44C04B35/66C04B35/565
Inventor 邵铁钢龚成喻泽源杨毅
Owner CHONGQING SANFENG COVANTA ENVIRONMENTAL IND
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