Device system and method for driving coal and sludge to be co-pyrolyzed by utilizing waste heat of iron-removed tailings
A technology of co-pyrolysis and iron tailings, which is applied in the direction of pyrolysis treatment of sludge, sludge treatment, chemical instruments and methods, etc., can solve the problems of low utilization rate of sludge, difficult recovery of waste heat from high-temperature solid particles, and low efficiency , to achieve the effects of protecting the environment, efficient treatment and utilization, and improving energy quality
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Embodiment 1
[0085] Ash content=25.03%, volatile matter content=20.48%, fixed carbon content=19.36%, moisture content=35.13% in the pulverized coal used in this example, specific heat capacity of pulverized coal C 2 =1.1 kJ / (kg·°C).
[0086] The moisture content of the wet sludge used in this example is 79%.
[0087] A waste heat recovery device system and method using copper slag to remove iron tailings to drive gasification pyrolysis The structure is as follows figure 2 As shown, it includes a granulator 1, a gasification furnace 2, a pyrolysis furnace 9 and ancillary equipment. The gasification furnace 2 is mainly composed of a furnace body and a feeding device. The pyrolysis furnace 3 is mainly composed of a furnace body, a feeding device, a gas-liquid separator, and a solid particle sieve. The feeding device includes a coal char feeder 3, a wet sludge feeder 4, and a pulverized coal feeder 5 .
[0088] The process flow chart of waste heat recovery using the above device system is...
Embodiment 2
[0097] This example uses the above-mentioned device to carry out the method for recovering waste heat from copper slag and iron tailings, and the process flow chart is as follows figure 1 As shown, the structure diagram of the device system is shown in figure 2 shown. Specific steps are as follows:
[0098] (1) Tailings granulation
[0099] The high-temperature tailings in the molten state enter the granulator 1, and in the granulator 1, due to centrifugal force and surface tension, they are transformed into spherical high-temperature particles at 1100°C and then enter the gasifier 2.
[0100] (2) Waste heat recovery of high temperature tailings particles
[0101] The high-temperature tailings particles at 1100°C enter the gasifier 2, and the coal char enters the gasifier 2 through the char feeder 3. The high-temperature tailings particles move from top to bottom in the gasifier 2, and the gasification reaction quickly absorbs the heat of the particles and produces hydrog...
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