Numerical Investigation on Pyrolysis Characteristics of Dunaliella Salina in CO2 Atmosphere

doi:10.12096/j.2096-4528.pgt.21136

Abstract

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.

Key words: biomass, gasification of Dunaliella salina, CO₂ gasification agent, pyrolysis characteristic

CLC Number:

TK 6

Feilong DENG, Yao YE, Yang LI, Qiaoli WANG, Junxia ZHANG. Numerical Investigation on Pyrolysis Characteristics of Dunaliella Salina in CO₂ Atmosphere[J]. Power Generation Technology, 2024, 45(1): 113-119.

Figures/Tables 10

Tab. 1 Comparison of biomass gasification and numerical simulation results

产生气体	V(H₂)/%	V(CO₂)/%	V(CO)/%	V(H₂)/V(CO)
实验数据	37.18	10.58	43.99	0.85
模拟结果	37.68	10.08	33.01	1.14

Fig. 1 Reaction flow chart

Tab. 2 Industrial analysis of Dunaliella salina

M_ar/%	A_ar/%	V_ar/%	C_ar/%
4.98	13.54	54.48	27.00

Tab. 3 Element analysis of Dunaliella salina

w(C)/%	w(H)/%	w(N)/%	w(S)/%
39.00	5.37	1.99	0.62

Fig. 2 Influence of CO2 mass flow rate on gas volume fraction

Fig. 3 Influence of temperature on gas volume fraction

Fig. 4 Influence of pressure on the molar flow rate of CH4

Fig. 5 Influence of pressure on the molar flow rate of H2

Fig. 6 Influence of pressure on the molar flow rate of CO

Fig. 7 Influence of pressure on the molar flow rate of CO2

References 19

1	冯伟忠，李励．“双碳”目标下煤电机组低碳、零碳和负碳化转型发展路径研究与实践[J]．发电技术，2022，43(3)：452-461． doi:10.12096/j.2096-4528.pgt.22061
	FENG W Z， LI L ．Research and practice on development path of low-carbon，zero-carbon and negative carbon transformation of coal-fired power units under “double carbon” targets[J]．Power Generation Technology，2022，43(3)：452-461． doi:10.12096/j.2096-4528.pgt.22061
2	薛凯，王义函，陈衡，等．槽式太阳能辅助生物质热电联产系统热力学性能分析[J]．发电技术，2021，42(6)：653-664． doi:10.12096/j.2096-4528.pgt.21044
	XUE K， WANG Y H， CHEN H，et al ．Thermodynamic performance analysis of a parabolic trough solar-assisted biomass-fired cogeneration system[J]．Power Generation Technology，2021，42(6)：653-664． doi:10.12096/j.2096-4528.pgt.21044
3	臧海祥，马铭欣，周亦洲，等．电力市场环境下风电-光热-生物质混合电站鲁棒优化调度模型[J]．电力系统保护与控制，2022，50(5)：1-11．
	ZANG H X， MA M X， ZHOU Y Z，et al ．Robust optimal scheduling model for a wind power-concentrating solar power-biomass hybrid power plant in the electricity market[J]．Power System Protection and Control，2022，50(5)：1-11．
4	国家能源局．生物质能发展“十三五”规划[EB/OL]．(2016-10-28)[2022-01-13]．．
	National Energy Administration ．The 13th Five-Year Plan for biomass energy[EB/OL]．(2016-10-28)[2022-01-13]．．
5	邢定峰，张哲，张福琴．藻类热解生产生物质燃料研究进展[J]．化学工业，2008，26(3)：38-42． doi:10.3969/j.issn.1673-9647.2008.03.006
	XING D F， ZHANG Z， ZHANG F Q，et al ．Progress in the study of bio-oil fuel production by algae pyrolysis[J]．Chemical Industry，2008，26(3)：38-42． doi:10.3969/j.issn.1673-9647.2008.03.006
6	朱莺莺．微藻能源化利用进展综述[J]．广东化工，2017，44(11)：142-144． doi:10.3969/j.issn.1007-1865.2017.11.064
	ZHU Y Y ．The review of microalgae energy regeneration and utilize technology progress[J]．Guangdong Chemical Industry，2017，44(11)：142-144． doi:10.3969/j.issn.1007-1865.2017.11.064
7	杨雅．微藻催化热解制取生物油的实验研究[D]．青岛：青岛科技大学，2014．
	YANG Y ．Experimental study on the production of bio-oil by catalytic pyrolysis of microalgae[D]．Qingdao：Qingdao University of Science and Technology，2014．
8	王伟文，刘瑞，王文强．微藻类生物质热解特性探究[J]．化工科技，2016，24(5)：7-10． doi:10.3969/j.issn.1008-0511.2016.05.002
	WANG W W， LIU R， WANG W Q，et al ．Pyrolysis properties of micro-alage biomass[J]．Science and Technology in Chemical Industry，2016，24(5)：7-10． doi:10.3969/j.issn.1008-0511.2016.05.002
9	代民权．微藻与油页岩的热解特性研究[D]．广州：华南理工大学，2019．
	DAI M Q ．Study on pyrolysis characteristics of microalgae and oil shale[D]．Guangzhou：South China University of Technology，2019．
10	郝小红，王亚兵，金晶，等．微藻热解特性及动力学分析[J]．能源工程，2016(4)：40-45． doi:10.3969/j.issn.1004-3950.2016.04.007
	HAO X H， WANG Y B， JIN J，et al ．Pyrolysis characteristics and kinetics of microalgae[J]．Energy Engineering，2016(4)：40-45． doi:10.3969/j.issn.1004-3950.2016.04.007
11	杨文衍，曾燕，罗嘉，等．微拟球藻热解及其催化热解制备生物油研究[J]．燃料化学学报，2011，39(9)：664-669． doi:10.3969/j.issn.0253-2409.2011.09.005
	YANG W Y， ZENG Y， LUO J，et al ．Production of bio-oil by direct and catalytic pyrolysis of nannochloropsis sp[J]．Journal of Fuel Chemistry and Technology，2011，39(9)：664-669． doi:10.3969/j.issn.0253-2409.2011.09.005
12	唐紫玥，陈伟，胡俊豪，等．微藻与塑料混合热解制备低氮低氧富烃液体油[J] ．燃料化学学报，2021，49(12)：1860-1866.
	TANG Z Y， CHEN W， HU J H，et al ．Microalgae co-pyrolysis with waste plastics to prepare low-O/N and hydrocarbon-rich liquid oil[J]．Journal of Fuel Chemistry and Technology，2021，49(12)：1860-1866．
13	陈春香，程正，卢子广，等．微波催化热解微藻特性研究及热解残渣催化作用分析[J]．广西大学学报(自然科学版)，2018，43(2)：554-560．
	CHEN C X， CHENG Z， LU Z G，et al ．Characteristics of microwave catalyzed pyrolysis of microalgae and catalysis analysis of pyrolytic residues[J]．Journal of Guangxi University (Natural Science Edition)，2018，43(2)：554-560．
14	陈秀峰，马晓茜，陈春香．微藻微波催化裂解研究及动力学分析[J]．燃料化学学报，2012，40(3)：315-320． doi:10.3969/j.issn.0253-2409.2012.03.010
	CHEN X F， MA X Q， CHEN C X ．Catalytic cracking and kinetics analysis of microalgae by microwave[J]．Journal of Fuel Chemistry and Technology，2012，40(3)：315-320． doi:10.3969/j.issn.0253-2409.2012.03.010
15	房佩文，巩志强，张缦，等．热解温度对微藻基生物质热解焦性质的影响[J]．洁净煤技术，2020，26(S1)：139-146．
	FANG P W， GONG Z Q， ZHANG M，et al ．Pyrolysis temperature impact on the microalgal biomass char characteristics[J]．Clean Coal Technology，2020，26(S1)：139-146．
16	王振通，巩志强，王振波，等．油田油泥热解焦掺混微藻渣燃烧实验研究[J]．石油学报(石油加工)，2019，35(4)：818-824．
	WANG Z T， GONG Z Q， WANG Z B，et al ．Experimental study on co-combustion of oil sludge pyrolysis char blended with microalgae residues[J]．Acta Petrolei Sinica (Petroleum Processing Section)，2019，35(4)：818-824．
17	袁文华，张俊霞，杨彦林，等．CO₂气氛下生物质气化制氢的数值分析[J]．热科学与技术，2020，19(5)：472-478．
	YUAN W H， ZHANG J X， YANG Y L，et al ．Numerical analysis on hydrogen production based on biomass gasification in CO₂ atmosphere[J]．Journal of Thermal Science and Technology，2020，19(5)：472-478．
18	陈青．生物质高温气流床气化合成气制备及优化研究[D]．杭州：浙江大学，2012．
	CHEN Q ．Study and optimization of biomass gasification in a high-temperature entrained-flow gasifier for syn-gas[D]．Hangzhou：Zhejiang University，2012．
19	邹树平，吴玉龙，杨明德，等．微藻热解特性及其动力学分析[J]．燃烧科学与技术，2007，13(4)：330-334． doi:10.3321/j.issn:1006-8740.2007.04.009
	ZOU S P， WU Y L， YANG M D，et al ．Characteristics and dynamics of pyrolysis process microalgae[J]．Journal of Combustion Science and Technology，2007，13(4)：330-334． doi:10.3321/j.issn:1006-8740.2007.04.009

[1]	Yan ZHENG, Xuan YAO, Xunqiang CHEN. Analysis of Syngas Components and Energy in Biomass Gasification Coupled Power Generation System [J]. Power Generation Technology, 2023, 44(6): 859-864.
[2]	Kai XUE, Yihan WANG, Heng CHEN, Gang XU, Jing LEI. Thermodynamic Performance Analysis of a Parabolic Trough Solar-assisted Biomass-fired Cogeneration System [J]. Power Generation Technology, 2021, 42(6): 653-664.
[3]	Shaohui REN,Xiaowei HU,Can HU,Yuan ZHAO,Yuefeng LI. Waste Heat Utilization of Biomass Direct-Fired Power Plant in Agriculture [J]. Power Generation Technology, 2020, 41(2): 206-209.
[4]	Feng HAN,Kunlin CONG,Qinghai LI,Yanguo ZHANG,Jiaoping YAN,Feng HU. Application of Multi-pass Circulating Fluidized Bed in Integrated Energy Service [J]. Power Generation Technology, 2020, 41(2): 104-109.
[5]	Kexun LI,Mingzhu ZONG,Gaosheng WEI. Overview of Geothermal Power Generation and Joint Power Generation With Other New Energy Sources [J]. Power Generation Technology, 2020, 41(1): 79-87.
[6]	Lingyun ZHU,Guoneng LI,Taiyun KANG,Huafeng CHEN,Youqu ZHENG. Experimental Study on a Water Cooled Thermoelectric Generator Based on Biomass Fuel [J]. Power Generation Technology, 2019, 40(2): 148-154.
[7]	GAO Hui-hua. Research on Pollutants Generation and Discharge Coefficient of SO₂ from Biomass Power Plant [J]. Power Generation Technology, 2017, 38(1): 17-20.

Numerical Investigation on Pyrolysis Characteristics of Dunaliella Salina in CO₂ Atmosphere

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 10

References 19

Related Articles 7

Recommended Articles

Metrics

Comments