The invention discloses a multi-channel sampling
trapping and grading
tar removal synergistic method for a
biomass gasification poly-generation device, and relates to the technical field of
biomass gas sampling analysis and purification control, and the method comprises the following steps: establishing a heating sampling pipeline with
temperature control, a multi-channel sampling manifold, a constant distribution analysis channel, a
trapping channel and a safety channel flow; the main gas path is sequentially subjected to high-temperature
filtration and multi-stage condensation, and condensate is collected in different bins; the sampling channel is used for
trapping tar through parallel adsorption tubes / sampling bottles and is periodically switched by adopting a multi-way valve; synchronously feeding the sample gas into a micro GC to obtain components such as H / CO / CH / CO, calibrating a sensor on line by using standard gas, and constructing soft measurement results of a calorific value and a
tar index; when the tar index, the
pressure difference or the CO leakage reaches a threshold value, the
gas supply ratio of the condensing medium, the bypass catalytic
cracking bed and the reactor is adjusted in a linkage manner, and inerting release and isolation are triggered. According to the method, sampling representativeness and tar removal are integrated and coordinated, the risk of
dew formation and blockage is reduced, and the safe and stable operation capacity of a distributed
system is improved.