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New technique recycles 100 percent of plastic

Pyrolysis is the use of heat in the absence of oxygen for the decomposition of materials, while fluidized bed reactors pass a gas or liquid through solid granular material at high velocity .

Evaluation of fast pyrolysis feedstock conversion with a .

Hybrid poplar, switchgrass, and corn stover were pyrolyzed in a bench scale fluidized-bed reactor to examine the influence of storage time on thermochemical converting of these materials. The influence of storage on the thermochemical conversion of the biomass feedstocks was assessed based on pyrolysis product yields and chemical and .

Conceptual Process Design and Techno-Economic Assessment .

of pyrolysis vapors include (1) in situ, or within the fast pyrolysis reactor, and (2) ex situ, or in separate reactors after the removal of bulk solids including reactor bed material, char, and mineral matter. These process config-urations were detailed in a recent design report led by the National Renewable Energy Laboratory (NREL) [5]. A

Design and Optimization of Fluid-bed Reactor of Biomass .

Biomass pyrolysis equipment designed independently consists of feeding system with two-stage screw feeder, fluidized bed reactor, cyclone separator system, condensation system and control system. Fluidized bed reactor is taken numerical simulation by CFD software FLUENT. The system is optimized based on numerical simulation and preliminary test.

Multiphase Flow Equations for Modeling Tar Production from .

model for pyrolysis to a fluid dynamics model of the vortex reactor (Miller and Bellan, 1998). A similarly detailed study of the pyrolysis conditions in a bubbling (or circulating) fluidized bed is not available in literature. -. Any comprehensive model for biomass pyrolysis in a process reactor .

Sugar Cane Trash Pyrolysis for Bio-oil Production in a .

Sugar cane trash, Bio-oil, Pyrolysis, Fluidized bed reactor. 1. Introduction . Biomass is widely considered as a major potential for renewable energy in the future. Residual biomass and renewable materials can be converted by a pyrolysis process to a combustible liquid usually termed as biooil. Bio--oil is renewable and biodegradable and has

Bio-Oil Production from Biomass by Flash Pyrolysis in a .

pyrolysis reactor, a combined system was designed [4] that comprised heat transfer through the reactors wall, preheating the fluidizing gas and preheating silica sand. The system employs three separate but interconnected fluidized bed reactors: a flash pyrolysis reactor sited inside of a char burning reactor;

Pyrolysis Reactor - an overview | ScienceDirect Topics

One type of fast pyrolysis reactor currently used is the bubbling fluidised bed, a simple and well-understood technology with good temperature control and efficient heat transfer due to high particle density. 3–5 A circulating fluidised-bed reactor is more complex than a bubbling fluidised-bed reactor. In this technology, the residence time .

Detailed simulations of fast pyrolysis of biomass in a .

Jan 29, 2018 · In the present work, an Eulerian-Eulerian computational fluid dynamics model with an advanced kinetic scheme is used to simulate the fast pyrolysis of biomass in a fluidized bed reactor. The focus of this work is to investigate the influence of pyrolysis temperature and biomass components on the fast pyrolysis of biomass.

Chemical Engineering and Reactor Design of a Fluidised Bed .

reactor (TGFBR) was designed. Using this novel fluidised bed, gravimetric measurements and high heating rate, the thermal conversion of biomass was investigated. Using a thermogravimetric analyser (TGA) as a fixed bed and the TGFBR as a fluidized bed, the pyrolysis kinetics of olive kernels was studied. The pyrolysis in the TGFBR was analysed

Upgrading of bio-oil by ex-situ catalytic pyrolysis and in .

Ex-situ catalytic pyrolysis of Quercus mongolica over HZSM-5 and in-line esterification of pyrolysis/catalytic pyrolysis vapors with liquid phase n-butyl alcohol were carried out in a fluidized bed reactor. The ex-situ catalytic pyrolysis over HZSM-5 beads was performed to produce bio-oil containing aromatic hydrocarbons. The temperature of the ex-situ catalytic upgrading reaction was varied .

Production of Bio-oil from Pine Sawdust by Rapid Pyrolysis .

This article reports the experimental results of rapid or fast pyrolysis of pine sawdust in a bench-scale plant equipped mainly with a fluidized-bed reactor and a hot vapor filtration unit. The influence of pyrolysis temperature on product distribution was investigated. In each experiment, the mass balance was established and the chemical and physical characteristics of the products were examined.

Fast Pyrolysis of Biomass in a Fluidized Bed Reactor: In .

Apr 21, 2009 · A system to remove in situ char/ash from hot pyrolysis vapors has been developed and tested at the University of Twente. The system consists of a continuous fluidized bed reactor (0.7 kg/h) with immersed filters (wire mesh, pore size 5 μm) for extracting pyrolysis vapors. Integration of the filter system in the fluidized bed should overcome operational problems related to the increase in .

Evaluation of fast pyrolysis feedstock conversion with a .

Hybrid poplar, switchgrass, and corn stover were pyrolyzed in a bench scale fluidized-bed reactor to examine the influence of storage time on thermochemical converting of these materials. The influence of storage on the thermochemical conversion of the biomass feedstocks was assessed based on pyrolysis product yields and chemical and .

Pyrolysis of Softwood Carbohydrates in a Fluidized Bed .

2.2. Pyrolysis reactor Pyrolysis of softwood carbohydrates was conducted in a batch-operating fluidized bed reactor, illustrated in Figure 1. The inner diameter of the reactor was 34 mm and the height 79 mm. In principle the reactor set-up has a feeder attached to the reactor, however, during these experiments no feeder

Fast Pyrolysis of Biomass in a Fluidized Bed Reactor: In .

Apr 21, 2009 · A system to remove in situ char/ash from hot pyrolysis vapors has been developed and tested at the University of Twente. The system consists of a continuous fluidized bed reactor (0.7 kg/h) with immersed filters (wire mesh, pore size 5 μm) for extracting pyrolysis vapors. Integration of the filter system in the fluidized bed should overcome operational problems related to the increase in .

Bio-Oil Production from Biomass by Flash Pyrolysis in a .

pyrolysis reactor, a combined system was designed [4] that comprised heat transfer through the reactors wall, preheating the fluidizing gas and preheating silica sand. The system employs three separate but interconnected fluidized bed reactors: a flash pyrolysis reactor sited inside of a char burning reactor;

(PDF) Design of A Fluidized Bed Reactor For Biomass Pyrolysis

The gas distributor in a fluidized bed reactor is intended to induce a uniform and stable fluidization across the entire bed cross-section, operate for long periods without plugging or breaking .

Development of a Circulating Fluidized Bed Reactor Model .

Development of a Circulating Fluidized Bed Reactor Model for Biomass Fast Pyrolysis for Process Simulation The goal of this work is to develop an engineering reactor model for future integration with process simulations in order to gain a better understanding of the impact of fluid dynamics, heat transfer and reaction kinetics on the products .

CHAPTER-5 PYROLYSIS REACTOR - INFLIBNET

5.2 Types of Pyrolysis Reactor Type A: No solid movement through the reactor during pyrolysis (batch reactors) Type B: Moving bed (shaft furnaces) Type C: Movement caused by mechanical forces (e.g., rotary kiln, rotating screw etc.) Type D: Movement caused by fluid flow (e.g., fluidized bed, spouted bed, entrained bed etc.)

Operating Parameters for the Circulating Fluidized Bed CFB .

pyrolysis at different heating rates (Di Blasi, 2005). Figure 2: Status of the pyrolysis reactors. Source: PyNe, 2006. Technology strength strong average weak Market attractiveness high low Entrained bed Circulation fluidized bed Bubbling fluidized bed Ablative pyrolysis Rotating cone

Biomass Fast Pyrolysis Fluidized Bed Reactor: Modelling .

reactor design, optimization and experimental data interpretation in a cost-effective fashion. In this work, a fluidized bed reactor model for biomass fast pyrolysis was developed and applied to the Bell's Corners Complex (BCC) fluidized bed fast pyrolysis unit located at NRCan CanmetENERGY (Ottawa, Canada) for testing and validation.

Design, Simulation Analysis and Performance Evaluation of .

effect of the heat loss to the surrounding affects the stability of a required pyrolysis temperature and this has to be minimized. This paper addresses a design, numerical and simulation analysis, construction and performance evaluation of a small scale fluidized bed reactor plant for the pyrolysis of biomass. The reactor is developed to

Jute stick pyrolysis for bio-oil production in fluidized .

Pyrolysis of jute stick for bio-oil production has been investigated in a continuous feeding fluidized bed reactor at different temperatures ranging from 300 degrees C to 600 degrees C.

(PDF) DESIGN AND FABRICATION OF FLUIDIZED-BED REACTOR

A fluidized-bed reactor was designed and constructed for practical demonstration of the fluidization of solid particles at different fluid flow rates.

PEER-REVIEWED ARTICLE bioresources

A fluidized bed reactor pyrolysis process with recycled non-condensable gases was designed for a capacity of 5 kg/h based on previous basic studies of key parts. The main components of the pyrolysis process were introduced, and the performance was appraised. Initial experiments were conducted

Gasification - Wikipedia

Gasification is a process that converts organic- or fossil fuel-based carbonaceous materials into carbon monoxide, hydrogen and carbon dioxide.This is achieved by reacting the material at high temperatures (>700 °C), without combustion, with a controlled amount of oxygen and/or steam.The resulting gas mixture is called syngas (from synthesis gas) or producer gas and is itself a fuel.

CHAPTER-5 PYROLYSIS REACTOR - INFLIBNET

5.2 Types of Pyrolysis Reactor Type A: No solid movement through the reactor during pyrolysis (batch reactors) Type B: Moving bed (shaft furnaces) Type C: Movement caused by mechanical forces (e.g., rotary kiln, rotating screw etc.) Type D: Movement caused by fluid flow (e.g., fluidized bed, spouted bed, entrained bed etc.)

Catalytic Fast Pyrolysis of Biomass in a Bubbling .

fluidized gas velocity) on catalytic fast pyrolysis of biomass with Ga/ZSM-5 were studied in a fluidized bed reactor using pine saw dust as the biomass feed. The product distribution and hydrocarbon selectivity are shown to be a strong function of temperature and weight hourly space velocity. Compared to ZSM-5 catalyst at the same reaction

Catalytic fast pyrolysis of wood and alcohol mixtures in a .

Catalytic fast pyrolysis (CFP) of pine wood, alcohols (methanol, 1-propanol, 1-butanol and 2-butanol) and their mixtures with ZSM-5 catalyst were conducted in a bubbling fluidized bed reactor. The effects of temperature and weight hourly space velocity (WHSV) on the product carbon yields and selectivities of CFP of pure pine wood and methanol were investigated.