Syngas technology cleaning technologies

Sharma, S.D., Dolan, M., Park, D., Morpeth, L., Ilyushechkin, A.Y., McLennan, K., Harris, D.J., Thambimuthu, K.V., 2008. A critical review of syngas cleaning technologies -fundamental limitations and practical problems. Powder Technology 180, 115—121. 

Table 4. Typical product syngas analysis (Clean Coal Technology 2000) Sulfur content is greater than natural gas...

The above reaction can be carried out in the presence of a variety of catalysts including Ni, Cu/Zn, Cu/SiO, Pd/SiO, and Pd/ZnO. In the case of coal, it is first pulverized and cleaned, then fed to a gasifier bed where it is reacted with oxygen and steam to produce the syngas. A 2 1 mole ratio of hydrogen to carbon monoxide is fed to a fixed-catalyst bed reactor for methanol production. Also, the technology for making methanol from natural gas is already in place and in wide use. Ciurent natural gas feedstocks are so inexpensive that even with tax incentives renewable methanol has not been able to compete economically. 

Advanced cleaning and processing technology is necessary for raw syngas, with an emphasis on gas throughput, composition, and purihcation. 

We hope this book will provide the balanced overview of science and technology development that will facilitate the advances of hydrogen and syngas production for clean energy and sustainable energy development. 

Note that both physical solvent- and chemical solvent-based desulfurization technologies require operation temperature at or near room temperature (30 °C). The clean syngas is typically reheated before entering GT. 

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