Numerical Simulation of New Oxygen-Enriched Waste Incineration Flue gas Purification Technology

doi:10.11930/j.issn.1004-9649.2014.4.148.4

Abstract

Abstract: Derived from the combined technology of desulfurization and denitration for oxygen-enriched coal-fired flue gas based on CO₂ capture, a new flue gas purification process for waste incineration is proposed. The new technology can realize the simultaneous HCl, SO₂ and NO removing and recover the acid products in the flue gas compression and purification processes. With the Aspen Plus process simulation software, the numerical simulation of joint flue gas deacidification and purification process is carried out on a 350-t/d rotary kiln using pure oxygen melting incineration technology. The mass flow rate and component at critical nodes, the chemical reaction parameters and the HCl, SO₂ and NO removal efficiencies are obtained. The results show that the HCl and SO₂ removing efficiencies are about 100% and the denitration efficiency can reach 93%. At the same time, 306 kg of 40% dilute sulphuric acid and 51 kg of 15% diluted nitric acid can be recovered each hour. In addition, the sensitivity analysis on the influence of retention time on the efficiency of desulfurization and denitrification is also conducted.

Key words: oxygen-enriched combustion, municipal solid waste (MSW) incineration, flue gas purification, numerical simulation, Aspen

CLC Number:

TM628

HE Xue-hong, YAN Wei-ping, ZHAO Yong-ming. Numerical Simulation of New Oxygen-Enriched Waste Incineration Flue gas Purification Technology[J]. Electric Power, 2014, 47(4): 148-152.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.4.148.4

https://www.electricpower.com.cn/EN/Y2014/V47/I4/148

References

[1] ALTWICKER E R, MILLIGAN M S. Formation of dioxins:competing rates between chemically similar precursors de Novo reaction [J]. Chemosphere, 1993, 27(1-3): 301-307.
[2] 周雨虹,张英宇,王丽. 利用垃圾焚烧发电技术与环境污染防控措施[J]. 再生资源与循环经济,2012,5（4）：34-36.
ZHOU Yu-hong, ZHANG Ying-yu, WANG Li. Garbage power generation with prevention and control measulres[J]. Recyclable Resources and Circular Economy, 2012, 5(4): 34-36.
[3] 阎维平,鲁晓宇,高正阳,等. 在富氧燃煤锅炉烟气CO 2 捕集中回收SO 2 与NO的系统：中国,CN201010174003.9[P]. 2010-09-22.
[4] 阎维平,鲁晓宇. 富氧燃烧锅炉烟气CO 2 捕集中回收NO的研究[J]. 动力工程学报,2011,31（4）：294-299.
YAN Wei-ping, LU Xiao-yu. NO recovery during CO 2 capture from flue gas of an oxygen enriched coal fired boiler[J]. Journal of Chinese Societyof Power Engineering, 2011, 31(4): 294-299.
[5] 阎维平,李海新,鲁晓宇. 基于碳捕集的富氧燃煤烟气联合脱硫脱硝试验研究[J]. 环境科学学报,2013,33（5）：1382-1388.
YAN Wei-ping, LI Hai-xin, LU Xiao-yu. Experimental study on desulfurization and denitration of oxygen-enriched coal-fired flue gas with CO 2 capture [J]. Acta Scientiae Circumstantiae, 2013, 33(5): 1382-1388.
[6] FREGUIA S, ROCHELLE G T. Modeling of CO 2 absorption/stripping with monoethanolamine [J]. AIChe Journal, 2003, 49(7): 1676-1687.
[7] 陈茂兵,孙克勤,徐海涛,等. ASPEN PLUS软件模拟烟气氨法脱硫[J]. 污染防治技术,2009,22（1）：28-32.
CHEN Mao-bing, SUN Ke-qin, XU Hai-tao, et al . Simulation of FGD by ammonia based on ASPEN PLUS software[J]. Pollution Control Technology, 2009, 22(1): 28-32.
[8] 洪文鹏,何慧颖,刘广林,等. 基于Aspen Plus的氨法脱硫单塔系统流程模拟[J]. 动力工程学报,2013,33（2）：141-146.
HONG Wen-peng, HE Hui-ying, LIU Guang-lin, et al . Numerical simulation on single-tower process of ammonia desulfurization system based on Aspen Plus[J]. Journal of Chinese Society of Power Engineering, 2013, 33(2): 141-146.
[9] YAMADA T, KIGA T, OKAWA M, et al . Characteristics of pulverized-coal combustion in CO 2 -recovery power plant applied O 2 /CO 2 combustion[J]. JSME International Journal, 1998, 41(4): 1017-1022.
[10] ANDERSSON K, JOHNSSON F. Process evaluation of an 865 MWe lignite fired O 2 /CO 2 power plant[J]. Energy Conversion and Management, 2006, 47(18/19): 3487-3498.
[11] 阎维平. 温室气体的排放以及烟气再循环煤粉燃烧技术的研究[J]. 中国电力,1997, 30（6）: 59-62.
YAN Wei-ping. Emission of greenhouse gas and pulverized coal combustion technology with flue gas recirculation[J]. Electric Power, 1997, 30(6): 59-62.
[12] 阎维平,何雪鸿,尹水娥,等. 烟气近零排放的富氧焚烧垃圾电站技术经济性分析[J]. 热力发电,2013,42（7）：1-5.
YAN Wei-ping, HE Xue-hong, YIN Shui-e, et al . Technical and economic analysis on a waste oxygen-enriched incineration power plant with flue gas near-zero emissions[J]. Thermal Power Generation, 2013, 42(7): 1-5.
[13] ANDERSSON K, BIRKESTAD H, MAKSINEN P, et al . An 865 MW lignite fired CO 2 free power plant-a technical feasibility study[C]// Greehouse Gas Control Technologies, Kyoto, Japan, 2003: 1051-1056.
[14] 鲁晓宇.富氧燃煤发电机组烟气压缩工艺及脱硫脱硝的研究[D]. 河北：华北电力大学,2011.
[15] 任晓莉,赵林,杨宝强. NO x 废气吸收的板式塔模型[J]. 化学工程,2007,35（9）：13-16.
REN Xiao-li, ZHAO Lin, YANG Bao-qiang. A mathematical model for NO x absorption in plate column [J]. Chemical Engneering, 2007, 35(9): 13-16.
[16] Aspen Technology. Aspen plus getting started modeling processes with electrolytes[R]. USA, 2010.
[17] FLEIG D, NORMANN F, ANDERSSON K, et al . The fate of sulphur during oxy-fuel combustion of lignite [J]. Energy Procedia, 2009, 1(1): 382-390.