CO2气氛下杜氏盐藻热解特性的数值研究
摘要：为了研究气化剂CO2质量流量、气化温度、气化压强对杜氏盐藻气化的影响规律，通过使用Aspen Plus软件模拟了杜氏盐藻在CO2气氛下的热解过程。结果为：杜氏盐藻在CO2气氛下气化时，随着CO2质量流量的增大，H2体积分数先增大后减小；当CO2质量流量为350 kg/h时，H2体积分数达最大值40.06%；当气化温度从400 ℃增大到900 ℃时，H2、CO体积分数增加，CH4体积分数减小；当气化温度大于900 ℃时，H2、CH4、CO体积分数趋于稳定；当气化温度从400 ℃增加到1 200 ℃时，压强越大，CH4生成量越多，H2和CO生成量越少；当气化温度为700 ℃时，压强对燃气产量的影响最为显著。故适当地改变CO2质量流量，可以提高H2的产量；适当升高气化温度和减小气化压强可以提高H2和CO的产量，但是CH4的产量会有所下降。
Abstract:In order to study the effect of mass flow rate, gasification temperature and gasification pressure of gasification agent CO2 on the gasification of Dunaliella salina, the Aspen Plus software was used to simulate the pyrolysis process of Dunaliella salina in CO2 atmosphere. The results show that when Dunaliella salina is gasified in CO2 atmosphere, with the increase of CO2 mass flow rate, the H2 volume fraction firstly increases and then reduces. When the mass flow of CO2 is 350 kg/h, the volume fraction of H2 reaches a maximum of 40.06%. When the gasification temperature is increased from 400 to 900 ℃, the volume fraction of H2 and CO increases, and the volume fraction of CH4 decreases. When the gasification temperature is greater than 900 ℃, the volume fraction of H2, CH4 and CO tends to be stable. When the gasification temperature increases from 400 to 1 200 ℃, the higher the pressure, the more CH4 is produced, and the less H2 and CO are produced. When the gasification temperature was 700 ℃, the pressure has the most significant impact on gas production. Therefore, appropriately changing the mass flow of CO2 can increase the production of H2, and appropriately increasing the gasification temperature and reducing the gasification pressure can increase the production of H2 and CO. However, the production of CH4 will decrease.
标题：CO2气氛下杜氏盐藻热解特性的数值研究
title:Numerical Investigation on Pyrolysis Characteristics of Dunaliella Salina in CO2 Atmosphere
作者：邓飞龙, 叶垚, 李阳, 王巧丽, 张俊霞
authors:Feilong DENG, Yao YE, Yang LI, Qiaoli WANG, Junxia ZHANG
关键词：生物质,杜氏盐藻气化,CO2气化剂,热解特性,
keywords:biomass,gasification of Dunaliella salina,CO2 gasification agent,pyrolysis characteristic,
发表日期：2024-02-29
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