硫氨磷基阻滞剂对飞灰特性的影响及对二噁英的阻滞效果

丁佳敏; 陆胜勇; 林晓青; 彭亚旗; 何垚

doi:DOI:10.13205/j.hjgc.202207013

硫氨磷基阻滞剂对飞灰特性的影响及对二噁英的阻滞效果

doi: DOI:10.13205/j.hjgc.202207013

1. 浙江大学台州研究院, 浙江台州 318000;
2. 浙江大学能源工程学院, 杭州 310027;
3. 中国电建集团华中电力设计研究院, 郑州 450007

基金项目:

浙江省领雁研发计划(2022C03056)

详细信息

作者简介:
丁佳敏(1989-),男,工程师,主要从事垃圾焚烧飞灰无害化资源化研究。dingjiamin@zju.edu.cn

通讯作者:
彭亚旗(1992-),男,助理研究生,主要从事固废资源化利用及污染物控制。pengyaqi@zju.edu.cn

计量
- 文章访问数: 104
- HTML全文浏览量: 18
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-16
- 网络出版日期: 2022-09-02

INFLUENCE OF S-N-P-INHIBITOR ON FLY ASH CHARACTERISTICS AND PCDD/Fs CONTENT

1. Research Institute of Zhejiang University-Taizhou, Taizhou 318000, China;
2. College of Energy Engineering, Zhejiang University, Hangzhou 310027, China;
3. POWERCHINA Central China Electric Power Engineering Co., Ltd, Zhengzhou 450007, China

摘要

摘要: 阻滞剂技术由于操作简单、成本低和效率高等优点,被广泛应用于实际生活垃圾焚烧炉,逐渐成为控制二噁英生成的重要技术之一。选取某台典型循环流化床生活垃圾焚烧炉为研究对象,通过高精度给料设备向余热锅炉两侧喷射硫氨磷基阻滞剂,研究阻滞剂对飞灰物化特性影响及其对二噁英的阻滞效果。结果表明:硫氨磷基阻滞剂对飞灰中的PCDD/Fs有很好的阻滞效果,喷射阻滞剂后飞灰中PCDD/Fs毒性当量从2.31 ng I-TEQ/g降至0.23 ng I-TEQ/g,阻滞率达到90.0%;阻滞剂主要通过减少氯源、改变飞灰粒径及表面特性等实现飞灰中二噁英的高效阻滞。此外,阻滞剂对飞灰中部分重金属有一定的固化作用,其中对Pb固化效果最好,达到49.02%。该成果可为后续硫氨磷基阻滞剂的工业化应用提供技术支撑。
- 生活垃圾焚烧炉 /
- 硫氨磷基阻滞剂 /
- 二噁英 /
- 重金属
Abstract: Due to its advantages of simple operation,low cost and high efficiency,inhibitors have been widely used in waste incinerators,and gradually become one of the important technologies to control dioxins.The effect of the inhibitor on fly ash characteristics and the concentration of PCDD/Fs in fly ash was studied by injecting the S-N-P-inhibitor into the heat recovery boiler of a typical circulating fluidized bed waste incinerator with high-precision feeding equipment.The results showed that the inhibitor decreased the content of PCDD/Fs in fly ash remarkably from 2.31 ng I-TEQ/g to 0.23 ng I-TEQ/g,with an inhibition efficiency of 90.0%,which was achieved through reducing the concentration of Cl₂ in flue gas,increasing particle size and decreasing the specific surface area of fly ash.In addition,inhibitors also exhibit stabilization function on heavy metals,especially for Pb (with a stabilization rate of 49.02%).This research can provide technical support for the subsequent industrial application of the S-N-P-inhibitor.
- municipal solid waste incineration /
- S-N-P-inhibitor /
- dioxin /
- heavy metals

HTML全文

参考文献(27)

[1]	KE S, YAN J H, LI X D, et al. Inhibition of de novo synthesis of PCDD/Fs by SO₂ in a model system[J]. Chemosphere, 2010, 78(10):1230-1235.
[2]	RYAN S P,LI X D, GOLLETT B K, et al. Experimental Study on the Effect of SO₂ on PCDD/F emissions:determination of the importance of gas-phase versus solid-phase reactions in PCDD/F formation[J]. Environmental Science&Technology, 2006, 40,22:7040-7047.
[3]	詹明秀,陈彤,林晓青,等.氮基阻滞剂抑制二噁英生成研究综述[J].能源工程, 2013(6):43-49.
[4]	林晓青.废物焚烧炉二噁英硫氨基复合阻滞的研究[D].杭州:浙江大学, 2015.
[5]	PANDELOVA M, LENOIR D, SCHRAMM K W. Inhibition of PCDD/F and PCB formation in co-combustion[J]. Journal of Hazardous Materials, 2007, 149(3):615-618.
[6]	严密.医疗废物焚烧过程二噁英生成抑制和焚烧炉环境影响研究[D].杭州:浙江大学, 2012.
[7]	PANDELOVA M, LENOIR D, SCHRAMM K W. Correlation between PCDD/F, PCB and PCBz in coal/waste combustion. Influence of various inhibitors[J]. Chemosphere, 2006, 62(7):1196-1205.
[8]	HAJIZADEH Y, ONWUDILI J A, WILLIAMS P T. Effects of gaseous NH₃ and SO₂ on the concentration profiles of PCDD/F in flyash under post-combustion zone conditions[J]. Waste Management, 2012, 32(7):1378-1386.
[9]	ZHAN M X, FU J Y, CHEN T, et al. Suppression of dioxins by S-N inhibitors in pilot-scale experiments[J]. Environmental Science&Pollution Research, 2016, 23(16):1-15.
[10]	LIN X Q, ZHAN M X, YAN M, et al. Suppression of dioxins in waste incinerator emissions by recirculating SO₂[J]. Chemosphere, 2015, 133:75-81.
[11]	OGAWA H, ORITA N, HORAGUCHI M, et al. Dioxin reduction by sulfur component addition[J]. Chemosphere, 1996,32(1):151-157.
[12]	RAGHUNATHAN K, GULLETT B K. Role of sulfur in reducing PCDD and PCDF formation[J]. Environmental Science&Technology, 1996,30(6):1827-1834.
[13]	HATANAKA T, KITAJIMA A, TAKEUCHI M. Role of chlorine in combustion field in formation of polychlorinated dibenzo-p-dioxins and dibenzofurans during waste incineration[J]. Environmental Science&Technology, 2005,39(24):9452-9456.
[14]	BI W Z, ZHAO R D, CHEN T J, et al. Study on the formation of PCDD/Fs in PVC chemical looping combustion[J]. Journal of Fuel Chemistry and Technology, 2015,43(7):884-889.
[15]	WIRTS M, LORENZ W, BAHADOR M. Does co-combustion of PVC and other plastics lead to enhanced formation of PCDD/F[J]. Chemosphere, 1998,37(8):1489-1500.
[16]	RUOKOJRVI P, AATAMILA M, TUPPURAINEN K, et al. Effect of urea on fly ash PCDD/F concentrations in different particle sizes[J]. Chemosphere, 2001, 43(4/5/6/7):757-762.
[17]	陆胜勇.垃圾和煤燃烧过程中二噁英的生成、排放和控制机理研究[D].杭州:浙江大学, 2004.
[18]	CHANG M B, CHUNG Y T. Dioxin contents in fly ashes of MSW incineration in Taiwan[J]. Chemosphere, 1998, 36(9):1959-1968.
[19]	CHEN Z L, LIN X Q, LU S Y, et al. Suppressing formation pathway of PCDD/Fs by S-N-containing compound in full-scale municipal solid waste incinerators[J]. Chemical Engineering Journal, 2019, 359:1391-1399.
[20]	林晓青,李晓东,陈彤,等.硫氨基循环抑制烟气二噁英生成的试验研究[J].环境科学学报, 2016, 36(1):289-293.
[21]	卫樱蕾,严建华,陆胜勇,等.钙基添加剂对机械化学法降解二噁英的影响[J].浙江大学学报(工学版), 2010,44(5):991-997.
[22]	吴海龙.焚烧炉二噁英排放特性及关键控制技术研究[D].杭州:浙江大学, 2012.
[23]	付建英,陈彤,吴海龙,等. SO₂抑制二噁英从头合成的实验及其过程模拟[J].化工学报, 2014, 65(9):3687-3693.
[24]	HUANG A B. Comparative evaluation of techniques for controlling the formation and emission of chlorinated dioxins/furans in municipal waste incineration[J]. Journal of Hazardous Materials, 1998,62(1):1-33.
[25]	EVERAERT K, BAEYENS J. Catalytic combustion of volatile organic compounds[J]. Journal of Hazardous Materials, 2004, 109(1/2/3):113-139.
[26]	MA Q Y, TRAINA S J, LOGAN T J, et al. In situ lead immobilization by apatite[J]. Environmental Science&Technology, 1993, 27(9):1803-1810.
[27]	YANG J, MOSBY D E, CASTEEL S W, et al. Lead immobilization using phosphoric acid in a smelter-contaminated urban soil[J]. Environmental Science&Technology, 2001, 35(17):3553-3559.