A kind of polylight heat-insulating plastic concrete for gasifier and power station boiler and its production process

Abstract

The application relates to a polylight heat-insulating plasticized concrete for gasifiers and power station boilers. The raw materials contain 20% to 30% of perlite, 30% to 35% of fly ash, and 8% to 20% of plasticizer in weight percentages. , expansion agent 3-5%, silicon micropowder 5%-12%, binder 24%-30%, based on the above raw materials, plus 0.1%-0.15% of the total amount of basic raw materials engineering fibers, 0.15%-0.2% of Water reducing agent, 0.1% to 0.15% curing agent. The polylight heat-insulating plastic concrete of the present application has the advantages of high compressive strength, low thermal conductivity, low heating permanent linear change rate, etc. The performance of its related products has reached the national standard, and is significantly better than similar products, wherein the bulk density is 800-1200kg / m 3 , the thermal conductivity is 0.26~0.28W / (m·K), the compressive strength is 8~10MPa, and the permanent line change (1200℃×3h) is ±1%.

Description

technical field [0001] The invention relates to a polylight heat-insulating plastic concrete for gasifiers and power station boilers and a production process thereof, belonging to the technical field of refractory materials. Background technique [0002] Gasifier, or coal-to-gas gasifier, is one of the key large-scale equipment of gasification plant in coal chemical industry. Power plant boilers, or CFB circulating fluidized bed boilers in power plants, refer to medium and large boilers in power plants that provide a specified quantity and quality of steam to steam turbines, and are one of the main thermal equipment in thermal power plants. The refractory material in the gasifier and power station boiler plays a role of heat insulation. The quality of the refractory material determines the safety, stability and service life of the entire system device, and determines whether the gasifier and power station boiler can be stable and safe for a long time. long-term operation, w...

AI Technical Summary

Problems solved by technology

If it is not repaired in time, it will cause wear and tear of the parts in the boiler and increase the probability of dangerous accidents in the boiler

After the boiler lining material is partially damaged, the traditional repair method relies on workers to use a scraper to apply the repair mud to the incomplete part, and then manually smooth the remaining surface, which is labor-intensive to repair

Moreover, the repair effect of this method is generally poor, because the mud particles added later are looser than the original kiln wall, and it is difficult to achieve uniform compaction. Once the temperature difference changes, it will loosen and fall off, and the repair period is very high. long, the furnace still needs to be shut down, and the shutdown process will cause great economic losses

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