Coal pyrolysis, pyrolysis gas heating and schreyerite reduction coupled system and method
A technology of coal pyrolysis and pyrolysis gas, which is applied in the direction of furnace types, furnaces, shaft furnaces, etc., can solve the problems of increasing compressor investment, energy consumption waste, and affecting furnace conditions, etc., to reduce water and electricity consumption, reduce water consumption, Effect of reducing equipment investment amount
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Embodiment 1
[0084] The raw coal is crushed to -5mm and dried at 200°C. The heat of drying coal powder comes from the flue gas of the coal pyrolysis furnace. The dried coal is transported to the top bin of the coal pyrolysis furnace for use. The formed vanadium-titanium oxide pellets are transported to the top silo of the shaft furnace for use. The main components and contents of vanadium-titanium magnetite and vanadium-titanium oxide pellets are shown in Table 1 and Table 2. The gas heating furnace is heated by a ceramic radiant tube.
[0085] Table 1 Main components and content% of vanadium-titanium magnetite
[0086] Element
TF
FeO
Fe 2 o 3
V 2 o 5
TiO 2
content
54.12
23.09
51.08
0.65
15.77
[0087] Table 2 Main components and content% of vanadium-titanium oxide pellets
[0088] Element
TF
Fe 2 o 3
FeO
V 2 o 5
TiO 2
content
52.16
74.02
0.50
0.63
15.19
[00...
Embodiment 2
[0098] The raw coal is crushed to -5mm, dried at 150°C, and then transported to the top silo of the coal pyrolysis furnace for use. The heat of drying coal powder comes from the flue gas of the coal pyrolysis furnace, and the vanadium titanium made of vanadium titanium magnetite The oxidized pellets are transported to the silo at the top of the shaft furnace for use. The main components and contents of vanadium-titanium magnetite and vanadium-titanium oxidized pellets are shown in Table 1 and Table 2. The gas heating furnace is heated by a ceramic radiant tube.
[0099] First, the raw coal is continuously fed from the top of the coal pyrolysis furnace through the feeding screw, and the pulverized coal stays in the furnace for 1.5s, and is pyrolyzed during the downward process of pulverized coal in the pyrolysis device to generate solid semi-coke and pyrolysis gas. The components of coke and pyrolysis gas are shown in Table 6 and Table 7 respectively. The pressure in the furnace...
Embodiment 3
[0108] The raw coal is crushed to -5mm, dried at 150°C, and then transported to the top silo of the coal pyrolysis furnace for use. The heat of drying coal powder comes from the flue gas of the coal pyrolysis furnace, and the vanadium titanium made of vanadium titanium magnetite The oxidized pellets are transported to the silo at the top of the shaft furnace for use. The main components and contents of vanadium-titanium magnetite and vanadium-titanium oxidized pellets are shown in Table 1 and Table 2. The gas heating furnace is heated by a ceramic radiant tube.
[0109] First, the raw coal is continuously fed from the top of the coal pyrolysis furnace through the feeding screw, and the pulverized coal stays in the furnace for 1.5s, and is pyrolyzed during the downward process of pulverized coal in the pyrolysis device to generate solid semi-coke and pyrolysis gas. The components of coke and pyrolysis gas are shown in Table 9 and Table 10 respectively. The pressure in the furnac...
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