- HOME
- Technology
- Clean Coal Technology
Since Chiyoda Corp. has been participating in research and development of NEDOL Process as the national project in 1980's, Chiyoda Group is interested in the Clean Coal Technology (CCT).
This is a summary table about the gasification technologies to handle the solid type feedstock.. (based on published data)
The table is a part of the survey result, in which Chiyoda U-Tech carried out a preliminary comparison survey of licensors' technologies, because the gasification process has lately attracted considerable attentions in the field of CCT.
| Coal Gasification Technologies | Shell SCGP | GE/Texaco | E-Gas |
|---|---|---|---|
| Gasifier Configuration |  |
 |
 |
| Gasifier Wall | Membrane Wall | Refractory | Refractory/2-Stages |
| Feed System | Dried Fine Coal | Coal in Water Slurry | Coal in Water Slurry |
| Gasifier Temp., deg.C | >1,500 | 1,315-1,480 | 1,000-1,050 |
| Gasifier Press., bar | 25-45 | 36-87 | <42 |
| Ash Handling | Slagging | Slagging | Slagging(1st stage) |
| Syngas Cooling System | Syngas cooler or Water quench | Water quench or Radiant Cooler | 2nd stage reactor and Fire tube boiler |
| Burner Type | Multiple burners(4-8) | Fuel injector | Two horizontally opposed burners |
| Burner Life, months | >28 | 2-3(Fuel injector tip) | 3-6(Fuel injector tip) |
| Wall Maintenance Period, years | 10 | 2-3 | ～2 |
| Applicable Coal | Wide Range Coal ・Petcoke | No good, High-moisture Coal | Wide Range Coal |
| Cold Gas Efficiency, % | 80-83 | Dry feed Basis-3% | between Shell & GE |
| O2 Req'd, Nm3-O2/1,000Nm3(CO+H2) | 330-360 | 380-460 | between Shell & GE |
| Commecial Records | >15units(2006～) | >9units(1990～) | POSCO SNG Project(2010) |
| Coal Gasification Technologies | Prenflo | ECOPRO |
|---|---|---|
| Gasifier Configuration |  |
 |
| Gasifier Wall | Membrane Wall | Refractory/2-Stages |
| Feed System | Dried Fine Coal | Dried Fine Coal |
| Gasifier Temp., deg.C | 1,350-1,600 | 700-1,100 |
| Gasifier Press., bar | >40 | 20-30 |
| Ash Handling | Slagging | Slagging(1st stage) |
| Syngas Cooling System | Waste heat boilers or Water quench | 2nd stage reactor and Heat exchangers |
| Burner Type | Multiple burners | N/A |
| Burner Life, months | >28 | N/A |
| Wall Maintenance Period, years | 10 | N/A |
| Applicable Coal | Wide Range Coal ・Petcoke | High Volatile Bituminous Coal to Brown Coal |
| Cold Gas Efficiency, % | ～80 | >85 |
| O2 Req'd, Nm3-O2/1,000Nm3(CO+H2) | 330-360 | N/A |
| Commecial Records | >6Projects on-going | Demonstration stage |