24/08/2024
Figure 1: Methods of heat transfer to a pyrolysis reactor.
Fluidized beds
Fluidized beds have the advantages of being a well understood technology that is simple in construction and operation, allows for good temperature control and very efficient heat transfer to biomass particles due to intense mixing. They can be designed as bubbling fluidized beds which operate with a stationary fluidisation. In this configuration, only fine particles are entrained in the gas flow leaving the reactors. Another common approach is the circulating fluidized bed, in which heat carrier is recirculated in an external loop. The pyrolysis reactor is then placed in the riser and remaining char combusted in the fluidized bed in the presence of the heat carrier.
A typical configuration for bubbling fluidized bed pyrolysis is shown below with a representative product recovery section. Commercial plants may try to rely on a series of collection stages including de-misters although aerosol capture is notoriously difficult.
24/08/2024
What is Recycling
Plastic Recycling is not just a single step but is a 5 step recycling process. The below are the generalised steps involved in the Plastic recycling process. It should be noted that the majority of plastic waste is collected, distributed, sorted, and categorised by the informal sector. The sorted waste is then sent to recyclers. To be brief, the Plastic Recycling process is managed by multiple stakeholders in the system
24/08/2024
Collection and sorting of plastics waste
In the circular economy, effective waste collection is a vital first stage for efficient recycling. By separating waste correctly at the point of collection, the recycling process is more efficient and will increase the quality and quantities of recycled products. Improved waste collection positively impacts the waste streams and their suitability for downstream pre-treatment, sorting and recovery operations.
01/01/2024
Tubipfurije Umwaka Mushasha
