Fluidized Bed Pyrolysis Reactor
A continuous, bench-scale pyrolysis system (approximately 2 lb/h) was developed for rapid pyrolysis and bio-oil collection optimization. That bench-scale reactor serves as a valuable test bed for developing novel pyrolysis technologies and bio-oil upgrading technology. Engineering research in this area is being performed by government, industrial, and academic researchers; however, this system will extend pyrolysis technology to others. A custom two-stage cyclone system, fractional condensation system, and custom bio-oil collection components were integrated into the test bed. The unit operations in the bench-scale pyrolysis unit mirror those in the pilot-scale (approximately 100 lb/h) reactor skid; providing byproduct yields and benchmark performance data. Bench-scale optimization studies were used to accelerate the development of the pilot-sale and provide experimental data for the full scale pyrolysis reactor.
Powerful Instrument for Pyrolysis Research
Mainstream’s continuous, bench-scale pyrolysis unit provides a reliable test platform for pyrolysis research. The fluidized bed reactor has been fully optimized with biomass feedstock (bio-oil yields of 65%) and downstream components have been evaluated. This system ultimately provides the researcher the ultimate control and flexibility of process parameters (e.g. temperature, residence time) and bio-oil separation and collection.
Bench-Scale Pyrolysis Reactor
Fluidized Bed Pyrolysis ReactorGenerates high bio-oil yields with biomass and mixed waste. Continuous, 2 lb/h with controlled reactor and heated zone control
Two-stage cyclone separators:Efficient separation of pyrolysis char byproduct
Multi-stage condensersFraction condensation of bio-oil product
Touchscreen HMIAutomated control of pyrolysis conditions and process parameters. Fluidizing gas flow, reactor temperature, heated zone control, and user-programmable
Demonstrated PerformanceThe development of the bench-scale pyrolysis reactor for process scale-up has resulted in a stand-alone, pyrolysis demonstrator. Most small-scale reactors operate by batch processing or handle very small amounts of feedstock material. Designing, building, and commissioning a custom bench-scale process can be extremely time consuming and costly. Mainstream has eliminated the inherent risk with developing a pyrolysis test platform and is offering the industry a standard system capable of process optimization, bio-oil upgrading, and bio-oil collection testing and research. Our system has been successfully scaled-up to a 100 lb/h pyrolysis skidded system, which has processed biomass and mixed waste feedstocks.
High Quality Bio-oil and Biochar ByproductsThe byproducts from the bench-scale pyrolysis reactor are high quality. Mainstream has processed pine and other biomass feedstocks, as well as mixed solid waste and controlled blends of biomass and plastic (e.g. 80 wt%:20 wt% pine:polystyrene mixture ). The properties of bio-oil for pine feed and 80 wt%:20 wt% mixed waste feed at 500 °C are listed in Table 1. Properties of the pyrolysis char byproduct are listed in Table 2.
|Table 1. Properties of Bio-oil from Bench-scale Pyrolysis Unit|
|Property||100% Pine||80% Pine:20% PS|
|Residence Time (sec)||0.73||0.73|
|Moisture Content, wt%||18.1||15.0|
|Elemental Analysis, wet basis|
|Elemental Analysis, dry basis|
|Table 2. Properties of Char from Bench-scale Pyrolysis Unit|
|Proximate Analysis||Composition (wt%)|