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Two-Section Coal Gasifier

Product Description


Two-Section Gasifier, from top to bottom, consists of carbonization section and gasification section. Through the carbonization section, coal is sufficiently dried and destructively distilled under low temperature for a long time. The gas produced during the process of carbonization is called carbonization gas, namely upper gas. With high calorific value, the temperature of the gas is low and it contains low-temperature tar. After carbonization, the coal turns into carbon coal and enters gasification section where it fully reacts with gasification agent which enters the bottom of the Gasifier. The so-produced gas is called gasification gas, namely lower gas. With low calorific value, the temperature of the gas is high and it contains dust.

The gas produced by two-section gasifier has high and steady calorific value and its gasification efficiency and comprehensive heat efficiency are both higher than single-section gasifier, such as coaling automatically or manully by motorized pulleys of two-path, high ash pan water seal, high pressure gasification operating, high operating flexibility and automatic poking or hand-poking. For this type of gasifier, the labour intensity is low, while the automaticity is high.


Main Technical Parameters of Two-Section Gasifier
Specifications -1.5 -2.0 -2.6 -3.0 -3.2 -3.6
Diameter of Hearth mm 1500 2000 2600 3000 3200 3600
Fuel Size mm 13-25.25-50
Fuel Consumption kg/h 530-600 840-1000 1350-1650 1800-2400 2200-2600 3000-3560
The output of coal gas m3/h 1600-2100 2800-3300 1700-5500 6000-7500 7000-8500 9000-12000
Calorific Value of Gas (kJ/M3) upper side 7400-7800 7400-7800 7400-7800 7400-7800 7400-7800 7400-7800
lower side 5500-6000 5500-6000 5500-6000 5500-6000 5500-6000 5500-6000
mixed 6450-6900 6450-6900 6450-6900 6450-6900 6450-6900 6450-6900
The Temperature of Gas Outlet() upper side 100-150 100-150 100-150 100-150 100-150 100-150
lower side 500-560 500-560 500-560 500-560 500-560 500-560
The Pressure of Gas Outlet(KPa) upper side 0.9 0.9 0.98 0.98 0.98 0.98
lower side 1.2 1.2 1.47 1.47 1.47 1.47
The Pressure of Furnace bottom Blast KPa 3.5 5 6 7 10
Saturated Temperature
50-60 50-60 55-65 55-65 55-65 55-65
The Heated Area of Water jacket m2 12.5 13.9 14 16 17 19
The Steam pressure of Water Jacket KPa 294
The Steam output of Water Jacket kg/h 240 300 450 500 500 650
The Rotary Speed of Ash Pan r/h 3 2.97 1.7 1.5 1.5 1.5
The Transmission power of Ash Pan KW 2.5 3 5.5 5.5 5.5 7.5
The Power of Hydraulic Station KW 2.2
The Gland Seal Pressure of
Fire Detection 		KPa 294
Applicable fuels coal of non-bondand weak bond soot Old lignite.Part gas
The Outlet Diameter of
the Coal Gas(mm) 		upper side DN200 DN250 DN300 DN400 DN400 DN500
lower side 350X350 400X400 766X766 866X866 866X866 1000X1000
Diameter of Blast Tube at
Furnace Chassis(mm) 		mm DN200 DN250 DN300 DN400 DN400 DN500
Total power of installation KW 35 40 70 100 150 190
Deslagging Method wet-type.automatic deslagging
Remarks
The output and calorific value of coal gas are related in both coal types and the quality
This company continuously pursue the technological innovation and product improvement, specification technical parameters and appearance of the product is subject to change without prior notice










Two-section gasifier also divided into two kinds, cold gasifier and hot gasifier which be similar to single-stage gasifier in the structure and the function, Hereby don`t renew representation.







Process flow of Auxiliary cleaning Equipment of two-sections Gasifier


According to different auxiliary cleaning equipment of two-sections gasifier, it can be divided into hot decoking gas and cold clean gas.





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