Gasification of dried sewage sludge

Gasification of dried sewage sludge was performed in a newly developed three-stage gasifier consisting
of an auger as well as fluidized and fixed bed reactors to produce a producer gas with low-levels of
contaminants. The auger reactor was designed to generate tar in advance, thereby enhancing the tar
destruction in the fluidized bed gasifier and fixed-bed reactor. In the study, the effects of each reactor
temperature and activated carbon as an impurity absorbent were mainly investigated. The reaction
temperatures of the auger and fixed bed reactors were shown to have a strong influence on the tar
removal, while that of the fluidized bed reactor mainly affected the producer gas composition. The threestage
gasifier clearly decreased the tar content in producer gas and condensed tar and increased the H2
production. In an experiment performed with activated carbon at the auger reactor temperature of
~710 C and the fluidized bed and fixed bed reactor temperatures of ~830 C, the tar and H2 contents in
producer gas were only 22 mg/Nm3 and ~29 vol%, respectively. Activated carbon clearly reduced the NH3
and H2S contents in producer gas. The minimum NH3 and H2S contents were 324 and 346 ppmv,

ผลลัพธ์ (อังกฤษ) 2:

Gasification of Sewage Dried sludge was performed in a Three-Stage gasifier Newly developed consisting
of an Auger as well as fixed and fluidized reactors Bed Gas to Produce a producer with low-levels of
contaminants. Auger was designed to Generate the Reactor tar in Advance, thereby enhancing the tar
Destruction in the gasifier and fixed-fluidized Bed Bed Reactor. In the Study, the effects of each Reactor
Temperature and Carbon activated as an impurity absorbent were mainly investigated. The Reaction
temperatures of the Auger and fixed Bed reactors were shown to have a strong influence on the tar
Removal, while that of the fluidized Bed Reactor mainly the producer AFFECTED Gas composition. Threestage the
gasifier Clearly Decreased tar content in the producer Gas and condensed tar and the H2 Increased
Production. In an experiment performed with activated Carbon at the Auger Reactor Temperature of
~ 710 C and the fluidized Bed and fixed Bed Reactor temperatures of ~ 830 C, the tar and H2 contents in
producer Gas were only 22 mg / Nm3 and ~ 29 Vol%,. respectively. Carbon activated Clearly reduced the NH3
and H2S contents in Gas producer. The minimum NH3 and H2S contents were 324 and 346 ppmv,.