[Circulating fluidized bed gasification technology introduction]: Cooperating with the Institute of Engineering Thermal Physics, Chinese Academy of Science, with the innovation ability and rich experience in coal gas production, circulating fluidized bed gasifier using different types of coal was developed. Pulverized coal gasification technology can solve the widespread high cost, environmental pollution, low energy efficiency and supply insufficiency problems in many enterprises using coal gas and natural gas as fuel supply. [Features of circulating fluidized bed gasifier]: circulating fluidized bed coal gasification is a clean industrial gas produce technology which has the advantages of stable operation, wide adaptability of coal material, stable calorific value of product gas, no tar in gas, no waste water discharge, high cold gas efficiency, low carbon content of ash residue, and high continuous availability. [Powder gasification furnace application]: Industrial gas widely used in chemical industry, building materials, ceramics, iron/steel, non-ferrous metal smelting, food, textile and other industries. The specific application scope of circulating fluidized bed gasifier includes rotary kiln drying, ceramic building materials, casting heat treatment, alumina roasting, food high temperature disinfection, and textile products printing, etc. Circulating fluidized bed gasifierProduct advantages Wide fuel adaptability and low operating cost The relatively cheap 0-12mm pulverized coal is used as raw materials. Available coal types include lignite, long-flame coal, non-sticky bituminous coal, weakly sticky bituminous coal, coke powder, and mixed coal. Inside the furnace. Flexible choice of gasifier According to the different requirements of different fuels and users for the effective gas of the gas, the gasifier can be flexibly selected in air, air + water vapor, oxygen-enriched air / pure oxygen + steam. Large load adjustment range It can be adjusted smoothly in the range of 40% ~ 110% of the design load; it is convenient to start and stop the furnace, and it can be shut down in a few minutes. Stable and reliable operation The gasifier operates under slightly positive pressure (normal pressure), which is safe and reliable; the continuous operation rate is high; the system is fully loaded, continuous and stable operation, which can achieve unplanned shutdowns throughout the year. High energy efficiency of the system The air preheater and the waste heat boiler are used to recover the waste heat of high-temperature coal gas, and generate high-temperature gasifiers and steam as gasifiers. The resulting fuel gas consumes low coal and syngas, and the gas efficiency is> 85%, and the overall gas production cost is low. . Clean and environmentally friendly No tar and phenolic substances are produced in the gas production process; dry ash is taken out without waste water; and the generated gas is desulfurized, dust-removed, and deammonia condensed water treated to achieve zero emissions of hazardous substances, which meets the requirements of national environmental protection skills. Secondary use of waste In order to respond to the call of the country's circular economy, the waste in the gas production process can also be used internally and the heat can be recovered for power generation, drying, and heating processes. International leading gasification technology CXL series products have passed the identification of experts from China Petroleum and Chemical Industry Federation, China Machinery Industry Federation, and China Electrical Engineering Society: atmospheric pressure circulating fluidized bed coal gasification industrial gas technology has reached international leading level, clean and environmentally friendly! Clean coal gas production process Though the coal conveying system, 0-12 mm pulverized coal fuel was transferred to the furnace center to react with the high temperature (550ºC-650ºC) preheat gasification agent (air, air+water vapor and oxygen enrichment, etc.) generating CO, H2, and a small amount of CH4. Gasification agent can choose freely. The unreacted fuel was returned to the furnace through the regenerator for high rate cycle reaction. The coal gas is cooled to about 700ºCafter the air preheater, and then kept cool to around 220ºC by the waste heat boiler. Then it enters the desulfurization system after being cooled and dusted by the cyclone separator, cooler and bag filter. Finally, clean gas is pressured to the gas supply point. Hot coal gas production process:
According to the needs of the process, hot gas is produced; after the gas at 950 ° C is separated from the solid by the cyclone, the high-temperature semi-coke of fine particles continues to return to the furnace through the regenerator to participate in the reaction. The gas is cooled to about 700 ° C through the air preheater. After that, the dust is removed by the secondary cyclone and then supplied to the user. According to the different needs of users for gas, 600 ° C-700 ° C hot gas and 35 ° C clean gas can be provided. Circulating fluidized bed gasifier Application case Circulating fluidized bed gasifier is widely used in steel, ceramics, metal magnesium, aluminium, refractory material, glass, metallurgy and other industries.
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