coal gasifier for heating: 1. Diameter0.8-3.6m 2. 70% lower cost than the electric furnace 3. 30% ... two stage coal gasifier shch as: QM0.8, QM1.0, QM1.3, QM1.5, QM1.8, QM2.0, QM2.2, QM2.4, QM2.6 ... , QM3.0, QM3.2, QM3.4 single stage coal gasifier ... and CG3Q2.0-1, CG3Q2.6-1, CG3Q3.0-1, CG3Q3.2-1, CG3Q3.4-1 ...