Foamed thermal insulation material fired by coal water slurry gasification waste residue and preparation method thereof

Abstract

The invention discloses a foamed thermal insulation material fired by coal water slurry gasification waste residue. The foamed thermal insulation material is formed by uniformly mixing coal water slurry gasification waste residue and a high-temperature phase change material in proportion and then firing. The preparation method of the foamed thermal insulation material comprises the following steps: heating a mixture to the temperature of 700-800 DEG C at constant heating rate within 30-60 minutes, keeping constant temperature for 15-30 minutes, so that the coal water slurry gasification wasteresidue is fully foamed and expanded, then heating to the temperature of 900-1000 DEG C at the constant heating rate within 10-30 minutes, keeping constant temperature for more than 30 minutes, so that the high-temperature phase change material adhered to the foamed coal water slurry gasification waste residue is fully molten and liquefied at continuous high temperature and coal water slurry foamsare bonded into a whole, and naturally cooling and sizing. The foamed thermal insulation material disclosed by the invention has the advantages that a thermal insulation material is fired by utilizing the characteristic that the coal water slurry gasification waste residue can be foamed and expanded at the temperature of higher than 700 DEG C, and the problems of appropriation of land and environmental pollution due to accumulation of the coal water slurry gasification waste residue are solved; and the thermal insulation material produced by utilizing the coal water slurry gasification wasteresidue and the high-temperature phase change material has the advantages of fire resistance, durability, light weight, waterproofness, good thermal insulation performance, high strength and the like.

Description

technical field

[0001] The invention relates to the technical field of building material preparation, in particular to a method for preparing thermal insulation materials for interior and exterior walls of buildings. technical background

[0002] The coal water slurry gasification process refers to the use of pure oxygen and coal water slurry as the main raw materials, using an entrained bed reactor, and performing a partial oxidation reaction under pressurized non-catalytic conditions to generate crude gas with carbon monoxide and hydrogen as active components, which can be used It can be used as synthesis gas for synthesis of ammonia, methanol and natural gas. With many advantages such as good environmental performance and high thermal efficiency, it is an important strategic measure to alleviate the contradiction between oil supply and demand and ensure energy security. However, in the process of gasification, a by-product—coal water slurry gasification waste residue wil...

Examples

Embodiment 1

[0023] The mixture is calculated by mass percentage: coal water slurry gasification waste residue 40%, high temperature phase change material (glass powder) 60%, the mixture is evenly laid in the firing mold through the distribution machine, and the firing mold of the mixture is loaded Send it into the firing kiln, heat slowly to 750°C at a constant heating rate within 60 minutes, last for 20 minutes, then heat at a constant heating rate within 30 minutes to 1000°C for 30 minutes, and get it after natural cooling Foam insulation board. The actual dry density weight of the board is 300Kg / m 3 , The thermal conductivity is 0.08W / (m·K).

Embodiment 2

[0025] The mixture is calculated by weight percentage: coal water slurry gasification waste residue 85%, high temperature phase change material (glass powder) 15%, the mixture is evenly laid in the firing mold through the distribution machine, and the firing mold of the mixture is loaded Send it into the firing kiln, heat slowly to 700°C at a constant heating rate within 50 minutes, keep the constant temperature for 30 minutes, then heat to 900°C at a constant heating rate within 10 minutes, keep the constant temperature for 60 minutes, after natural cooling That is, the foamed insulation board is obtained. The actual dry density weight of the board is 150Kg / m 3 , The thermal conductivity is 0.04W / (m·K).

Embodiment 3

[0027] The mixture is calculated by weight percentage: coal water slurry gasification waste residue 70%, high temperature phase change material (glass powder) 30%, the mixture is evenly laid in the firing mold through the distribution machine, and the firing mold of the mixture is loaded Send it into the firing kiln, heat slowly to 800°C at a constant heating rate within 30 minutes, keep the constant temperature for 15 minutes, then heat to 960°C at a constant heating rate within 20 minutes, keep the constant temperature for 30 minutes, after natural cooling That is, the foamed insulation board is obtained. The actual dry density weight of the board is 200Kg / m 3 , The thermal conductivity is 0.06W / (m·K).

technical field

[0001] The invention relates to the technical field of building material preparation, in particular to a method for preparing thermal insulation materials for interior and exterior walls of buildings. technical background

[0002] The coal water slurry gasification process refers to the use of pure oxygen and coal water slurry as the main raw materials, using an entrained bed reactor, and performing a partial oxidation reaction under pressurized non-catalytic conditions to generate crude gas with carbon monoxide and hydrogen as active components, which can be used It can be used as synthesis gas for synthesis of ammonia, methanol and natural gas. With many advantages such as good environmental performance and high thermal efficiency, it is an important strategic measure to alleviate the contradiction between oil supply and demand and ensure energy security. However, in the process of gasification, a by-product—coal water slurry gasification waste residue wil...

Examples

Embodiment 1

[0023] The mixture is calculated by mass percentage: coal water slurry gasification waste residue 40%, high temperature phase change material (glass powder) 60%, the mixture is evenly laid in the firing mold through the distribution machine, and the firing mold of the mixture is loaded Send it into the firing kiln, heat slowly to 750°C at a constant heating rate within 60 minutes, last for 20 minutes, then heat at a constant heating rate within 30 minutes to 1000°C for 30 minutes, and get it after natural cooling Foam insulation board. The actual dry density weight of the board is 300Kg / m 3 , The thermal conductivity is 0.08W / (m·K).

Embodiment 2

[0025] The mixture is calculated by weight percentage: coal water slurry gasification waste residue 85%, high temperature phase change material (glass powder) 15%, the mixture is evenly laid in the firing mold through the distribution machine, and the firing mold of the mixture is loaded Send it into the firing kiln, heat slowly to 700°C at a constant heating rate within 50 minutes, keep the constant temperature for 30 minutes, then heat to 900°C at a constant heating rate within 10 minutes, keep the constant temperature for 60 minutes, after natural cooling That is, the foamed insulation board is obtained. The actual dry density weight of the board is 150Kg / m 3 , The thermal conductivity is 0.04W / (m·K).

Embodiment 3

[0027] The mixture is calculated by weight percentage: coal water slurry gasification waste residue 70%, high temperature phase change material (glass powder) 30%, the mixture is evenly laid in the firing mold through the distribution machine, and the firing mold of the mixture is loaded Send it into the firing kiln, heat slowly to 800°C at a constant heating rate within 30 minutes, keep the constant temperature for 15 minutes, then heat to 960°C at a constant heating rate within 20 minutes, keep the constant temperature for 30 minutes, after natural cooling That is, the foamed insulation board is obtained. The actual dry density weight of the board is 200Kg / m 3 , The thermal conductivity is 0.06W / (m·K).