This is a summary of the development conversion solid fuels in fluidized bed during hundred years that follow first patent Winkler September 1922. The gasifiers and their followers are described first. Other fuel converters, such as boilers, appeared only 1960–70s became interest because expected environmental advantages. Initially, bubbling boilers were introduced, followed by circulating (CFB...

In engineering practice submerged soils are commonly considered to be saturated and consequently the pore fluid may be regarded as incompressible. At shallow water depths this two-phase model is not in accordance with natural conditions. Even small quantities of gas bubbles change the stiffness properties of the pore fluid dramatically. In response to external fluctuating pressures, the gas bub...

Currently, various industrial processes are carried out in fluidized bed reactors. Knowing its internal dynamics is fundamental for the intensification of these processes. This work assesses motion calcium alginate spheres under influence an upward fluid flow within a 1.2 m high and 0.1 inner diameter acrylic column. The liquid–solid was compared with gas–liquid–solid operation mode terms mixin...

Changes in fluidization behaviour of green peas particulates with change in moisture content during drying were investigated using a fluidized bed dryer. All drying experiments were conducted at 50 + 2 0C and 13 + 2 % RH using a heat pump dehumidifier system. Fluidization experiments were undertaken for the bedheights of 100, 80, 60 and 40 mm and at 10 moisture content levels. Fluidization beha...

Fluidized bed has many advantages such as high heat and mass transfer rates, temperature homogeneity and good mixing property. However, conventional fluidized bed has some limitations; operation at high gas velocity leads to slugging and there exists minimum particle size for the uniform fluidization. Recently, a rotating fluidized bed (RFB) has attracted special interest, since it has a possib...

The application of an external magnetic field on a fluidized bed of ferromagnetic particles is well known in a conventional two-phase, gas–solid or liquid–solid fluidization. The external magnetic field significantly changes the fluidized bed fluid-dynamic behavior and if creatively used may enhance the bed performance. In this paper, a theoretical fluid-dynamic model describing behavior of a G...

Abstract This paper described the plant scale catalytic process of plastic waste materials in order to obtain an alternative fuel from three wastes Polypropylene (PP), Polystyrene (PS) and Polyethylene (PE). Pyrolysis is thermochemical decomposition plastics at elevated temperatures (in absence or little supply oxygen) into a range useful products: gas, liquid, solid residue. These have consist...

We numerically study how rigid solid cylinders with a length over diameter aspect ratio of 10 settle through suspensions consisting uniformly sized spheres and Newtonian liquid. identify regimes preference for horizontal settling vertical the dependent on overall solids volume fraction (in range 0–0.58) Archimedes number cylinders. These insights we use to interpret behavior fluidized mixtures ...