Design Of A Fluidized Bed Reactor For Biomass Pyrolysis
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University of Cincinnati / OhioLINK
2018
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ndltd-OhioLink-oai-etd.ohiolink.edu-ucin15353722315470492021-08-03T07:08:18Z Design Of A Fluidized Bed Reactor For Biomass Pyrolysis Bamido, Alaba O. Mechanical Engineering Biomass Fast Pyrolysis Fluidized bed Reactor Design Global warming is caused by the buildup of heat trapping gases such as carbon dioxide in the atmosphere. These gases retain heat from the sun, which makes the environment warmer. The use of biomass as a fuel fossil can help reduce the amount of carbon dioxide in the atmosphere. When fossil fuels such as coal, gas and crude oil, which are locked underground, are burnt in oxygen, they release an enormous amount of carbon dioxide to the atmosphere. Aside burning of fossil fuel, decaying plant residues also contribute to the increase in atmospheric carbon dioxide. Biomass derived fuels minimize dependence on underground fossil fuel thereby preventing excessive amount of carbon dioxide to be released to the atmosphere.Biomass is regarded as a renewable fuel because it can be replenished over a short period of time and is an active component of the carbon cycle. During plants (biomass) life, significant amount of CO2 is absorbed through photosynthesis. At death, these CO2 is released back to the atmosphere therefore ensuring no new carbon dioxide is produced. Pyrolysis of biomass offers many environmental benefits, most importantly, the reduction of CO2 in the atmosphere. Aside the reduction of carbon dioxide in the atmosphere, the biochar obtained from the pyrolysis of biomass can be used for soil amendment. Biochar in the soil improves soil fertility, reduces erosion and leaching of soil nutrients.Conventional ways of processing biomass involves a centralized system where all the biomass in a region are gathered at a specific location and transported to a commercial pyrolyzing plant where they are processed. A major disadvantage of this method is the use of a large area of land for construction of the biomass pyrolysis plant. It is also strenuous, bulky, immobile, and requires adequate planning and logistics for successful operation.This research project solves many of the above-mentioned issues. A small size and mobile fluidized bed reactor is designed and validated in this work. The design outlined only shows a first iteration of the overall design process. Parameters such as design pressure and temperature were chosen from arbitrary but reasonable estimates. The advantages of a fluidized bed pyrolysis reactor over other reactor types are: simple design, easy to repair when faulty, uniform temperature of particles, efficient mixing of particles and relatively cheap manufacturing cost. Solidworks was used to design the reactor geometry and ANSYS FLUENT was used for the thermochemical conversion analysis. ANSYS STATIC STRUCTURAL was also used for the Thermal and structural analysis. In addition, a cost estimate for the design is also presented. 2018-10-30 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535372231547049 http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535372231547049 unrestricted This thesis or dissertation is protected by copyright: some rights reserved. It is licensed for use under a Creative Commons license. Specific terms and permissions are available from this document's record in the OhioLINK ETD Center. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Mechanical Engineering Biomass Fast Pyrolysis Fluidized bed Reactor Design |
| spellingShingle |
Mechanical Engineering Biomass Fast Pyrolysis Fluidized bed Reactor Design Bamido, Alaba O. Design Of A Fluidized Bed Reactor For Biomass Pyrolysis |
| author |
Bamido, Alaba O. |
| author_facet |
Bamido, Alaba O. |
| author_sort |
Bamido, Alaba O. |
| title |
Design Of A Fluidized Bed Reactor For Biomass Pyrolysis |
| title_short |
Design Of A Fluidized Bed Reactor For Biomass Pyrolysis |
| title_full |
Design Of A Fluidized Bed Reactor For Biomass Pyrolysis |
| title_fullStr |
Design Of A Fluidized Bed Reactor For Biomass Pyrolysis |
| title_full_unstemmed |
Design Of A Fluidized Bed Reactor For Biomass Pyrolysis |
| title_sort |
design of a fluidized bed reactor for biomass pyrolysis |
| publisher |
University of Cincinnati / OhioLINK |
| publishDate |
2018 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535372231547049 |
| work_keys_str_mv |
AT bamidoalabao designofafluidizedbedreactorforbiomasspyrolysis |
| _version_ |
1719454577568251904 |