Two-stage gas generator-Wuxi Machinery Manufacturing Co., Ltd.

The upper and lower gas outlets of the two-stage gas generator can output gas with different calorific values. Its gasification efficiency and comprehensive thermal efficiency are both higher than that of a single-stage furnace. The coal has been completely retorted in the furnace. The lower gas basically does not contain tar, and the upper gas contains a small amount of light tar, which is not easy to block the pipeline. The calorific value of the two-stage furnace is high and stable, the operation is flexible, the degree of automation is high, and the labor intensity is low. The two-stage furnace gas station does not pollute the environment, saves water significantly, occupies a small area, and has low long-term operating costs.
The two-stage furnace adds a carbonization layer above the original gasification layer of the single-stage furnace, so that the coal becomes semi-coke when entering the gasification layer, making the coal more completely gasified. It can be clearly seen from the coal slag that the ash produced by the two-stage gas furnace has a low carbon content.

Structure diagram:

Technical parameters:

model	CG3Q-2.0	CG3Q-2.6	CG3Q-3.2	CG3Q-3.6	CG3Q-4.0
Furnace inner diameter (mm)	2000	2600	3200	3600	4000
Furnace cross-sectional area (m2)	3.44	5.31	8.04	10.17	12.56
Water jacket heating area (m2)	13.9	14	17	22.6	24.2
Applicable coal types	Non-bonded or weakly bonded anthracite and bituminous coal Coal quality should comply with GB-9143 Normal pressure fixed bed Coal quality standards for gas generators
Coal particle size (mm)	20-40； 25-50； 30-60
Coal consumption (kg/h)	750-850	1100-1270	2000-2200	2600-3200	3000-4500
Air consumption (m3)	2.0-2.5	2.0-2.5	2.0-2.5	2.0-2.5	2.0-2.5
Steam consumption (kg)	0.3-0.5	0.3-0.5	0.3-0.5	0.3-0.5	0.3-0.5
Gas production (Nm3/h)	2500-2800	3600-4200	6300-7500	7800-9000	9000-14000
Gas calorific value (kj/m3)	6060-6270	6060-6270	6060-6270	6060-6270	6060-6270
Gas calorific value (kj/m3) upper section Lower section	7100-7350 5200-5450
Gas outlet pressure (pa) Upper section - lower section	1.0-1.2 2.0-2.5	2.2-3.0 3.0-4.5	3.0-3.5 3.5-4.5	3.0-4.5 4.0-5.5	3.0-4.5 4.0-5.5
Furnace bottom blower pressure (kpa)	7.5	7.5	8	8.5	8.5
Saturated air temperature (℃)	50-65	50-65	50-65	50-65	50-65
Fire detection hole steam seal pressure (kpa)	＜294	＜294	＜294	＜294	＜294
Water jacket steam production (kg/h)	300	450	550	650	650
Water jacket steam pressure (kpa)	＜294	＜294	＜294	＜294	＜294
Coal adding method	automatic
Ash disk rotation speed (r/h)	2.77	1.7	1.5	1.5	1.5
Motor power of coal adding hydraulic station (kw)	2.2	2.2	2.2	2.2	2.2
Gray disk transmission power (kw)	4	11	11	11
Slag discharging form	Wet type, automatic slag discharge
Nominal diameter of gas outlet (mm) upper section Lower section	DN350 400×400	DN40 766×766	DN450 866×866	DN500 900×900	DN600 1000×1000
Nominal diameter of furnace bottom blast pipe (mm)	DN400	DN450	DN450 866×866	DN500 900×900	DN600 1000×1000
Total power(kw)	40	70	150	200	260