Thermal insulation construction method in hot gas pipelines

Abstract

The invention discloses a thermal insulation construction method in hot gas pipelines, and belongs to the technical field of metallurgy heat pipelines. A Y-shaped anchoring hook is welded on the inner wall of a metal pipe, a thermal insulation layer is arranged, a fiber blanket is firstly pasted for thermal insulation, then a plastic film is used for covering the fiber blanket, and finally fiber castable is smeared for integrated casting. The method overcomes the defects that a traditional hot gas conveying pipeline accident repair technology is long in overhaul time and large in construction difficulty, and the service life of a pipeline thermal insulation layer is short, the method solves the problem that traditional overhaul of the pipeline needs brick layers with high technology and needs complex special-shaped bricks, and achieves the purpose that common workers can finish construction, and construction cycle is obviously shortened.

Description

technical field [0001] The invention relates to a thermal insulation construction method in a hot gas pipeline, which belongs to the technical field of metallurgical heat pipelines. Background technique [0002] During the operation of the empty gas pipeline, flue, and chimney of the heating furnace, there is a phenomenon of partial shedding of the refractory material of the heat insulation layer in the pipeline, especially at the elbow of the pipeline and the top of the pipeline, resulting in high temperature on the metal surface of the pipeline, or even falling off. The material is brought into the pipeline in front of the burner by the flowing air or gas, blocking the flow of the air or gas of the burner, causing a serious reduction in the workload of the burner, and even burning the burner, resulting in major accidents that forced the shutdown of the furnace. The traditional construction method of thermal insulation layer in the heat transmission pipeline has the require...

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Problems solved by technology

[0002] During the operation of the empty gas pipeline, flue, and chimney of the heating furnace, there is a phenomenon of partial shedding of the refractory material of the heat insulation layer in the pipeline, especially at the elbow of the pipeline and the top of the pipeline, resulting in high temperature on the metal surface of the pipeline, or even falling off. The material is brought into the pipeline in front of the burner by the flowing air or gas, which blocks the flow of the air or gas of the burner, causing a serious reduction in the workload of the burner, and even burning the burner, resulting in a major accident that forced the shutdown of the burner.

The traditional construction method of thermal insulation layer in the heat transmission pipeline has a large amount of construction, great construction difficulty, long construction time, low service life of the thermal insulation layer, and requires high-tech bricklayers and preparation of complex special-shaped bricks, etc.

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