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Double-Stage Coal Gasifier
Coal gasifier is an uninterrupted gas producing system. The gasification agent, which is the mixture of air and the gasifier Self-produced steam, comes into the gasifier through the check valve at the gasifier bottom. The coal is broken into the size of 13-25mmor 25-50mmand fed into the gasifier for gasification. The coal gas produced in the gasifier is purified by dust cleaner, electric tar remover, electric light oil catcher, dual riser etc and then transferred to the user.
The technologic specfications of double stage cold gas station
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Type
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2.0
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2.6
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3.0
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3.2
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Diameter of chamber
(mm)
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2000
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2600
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3000
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3200
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Chamber cross-section area
(m2)
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3.14
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5.31
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7.07
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8.04
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Heat perception area of water jacket
(m2)
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11.69
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15.19
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17.53
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18.7
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Applicalbe coal
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Non-caking or weak-caking coal. Only can use coal and carbon
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Coal size
(mm)
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20-40, 25-50, 30-60
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Coal consumption
(kg/h)
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800-900
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1200-1500
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2000-2200
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2200-2600
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Air consumption
(m3/kg)
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2.0-2.5
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2.0-2.5
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2.0-2.5
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2.0-2.5
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Steam consumption
(m3/kg)
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0.3-0.5
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0.3-0.5
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0.3-0.5
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0.3-0.5
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Gas output
(m3/h)
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2500-2800
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4000-5000 begin_of_the_skype_highlighting end_of_the_skype_highlighting
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5500-6800
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6300-7800
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Net heating value(KJ/m3)
(Distillation stage)
(Gasifying stage)
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6060-6270
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6060-6270
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6060-6270
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6060-6270
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7110-7350
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7110-7350
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7110-7350
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7110-7350
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5225-5434
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5225-5434
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5225-5434
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5225-5434
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Gas pressure (Kpa)
(Distillation stage)
(Gasifying stage)
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1.0-1.2
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2.2-3.0
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2.2-3.0
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3.0-3.5
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2.0-2.5
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3.0-4.5
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3.0-4.5
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3.5-4.5
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Gas temperature0C
(Distillation stage)
(Gasifying stage)
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80-120
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80-120
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80-120
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80-120
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450-550
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450-550
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450-550
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450-550
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Max.blast pressure
(Kpa)
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6.0
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6.0
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6.5
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7.0
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Saturated vapor temperature0C
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50-65
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50-65
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50-65
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50-65
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Steam seal pressure of poking hole
(Kpa)
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0.25
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0.25
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0.25
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0.25
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Steam products
(kg/h)
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300
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450
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500
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550
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Inner steam pressure
(Mpa)
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0.07
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0.07
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0.07
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0.07
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Feeding coal mode
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Automatic
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Coal feeding system
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Hydraulic driving
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Ash tray speed
(r/h)
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2.97
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1.7
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1.5
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1.5
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Hydraulic station power
(KW)
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7.5*2
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11*2
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11*2
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11*2
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Discharging ash mode
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Automatic wet discharging ash
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Diameter of gas outlet (mm)
(Distillation stage)
(Gasifying stage)
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DN350
400*400
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DN400
766*766
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DN400
866*866
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DN500
866*866
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