TAILIEUCHUNG - CFD researched on rice husk gasification in a pilot fixed bed up-draft system

The study was conducted on the pilot plant fixed bed up-draft gasifier with two kind of gasification agents, pure air and air-steam mixture. Mathematical modeling and computer simulations were also used to describe and optimize the gasification processes. | SCIENCE & TECHNOLOGY DEVELOPMENT, Vol 19, 2016 CFD researched on rice husk gasification in a pilot fixed bed up-draft system Le Thi Kim Phung 1 Tran Tan Viet 1 Nguyen Luu Minh Thien 1 Pham Vuong Viet 1 Nguyen Thanh Truc 1 Le Anh Kien 2 Nghiep Quoc Pham 2 Duyen Khac Le 2 1 2 Ho Chi Minh city University of Technology,VNU-HCM Institute for Tropicalisation and Environment (Manuscript Received on July, 2016, Manuscript Revised on September, 2016) ABSTRACT Finding alternative energy sources for Computational Fluid Dynamics method and fossil fuels was a global matter of concern, especially in developing countries. Rice husk, an simulation was carried by using Ansys Fluent software. Changes in outlet composition of abundant biomass in Viet Nam, was used to partially replace fossil fuels by gasification syngas components (CO, CO2, CH4, H2O, H2) and temperature of process, in relation with process. The study was conducted on the pilot ratio of steam in gasification agents, were plant fixed bed up-draft gasifier with two kind of gasification agents, pure air and air-steam presented. Obtained results indicated concentration of CH4, H2 in outlet was mixture. Mathematical modeling and computer simulations were also used to describe and increased significantly when using air-steam gasification agents than pure air. The optimize the gasification Mathematical modeling was discrepancies among the gasification agents were determined to improve the actual process. processes. based on Keywords: CFD; gasification; rice husk; Ansys Fluent; UDFs. 1. INTRODUCTION With the continuous development of economy and technology, people's living Trang 96 standards were constantly being enhanced and thereby energy demand surged in Vietnam. The primary energy demand was estimated to TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 19, SOÁ K6- 2016 escalate annually at , from 38 million tons approaches to model the gasification process. of oil .

• Vật lý
• CFD researched on rice husk gasification
• Rice husk gasification
• A pilot fixed bed up draft system
• Air steam gasification
• Pure air and air steam mixture