摘要
印染行业为了改善纺织品的性质需在其中加入多种有机助剂和油剂,这样在高温定型过程中,这些有机物质会大量挥发出来,形成染整定型机废气,对周围环境和居民生活造成很大影响,因此染整定型机废气的污染问题日益得到人们的重视。
本文系统介绍染整定型机废气的产生过程,综述现有处理技术中的机械净化、喷淋洗涤、静电除尘和焚烧技术的特点以及在处理过程中存在的问题。针对染整定型机废气中油烟颗粒粒径小大多为次微米级,造成透明度差和具有恶臭气味的特点,提出一套新工艺(换热器、喷淋洗涤和冷凝式静电除尘三级处理)解决染整定型机废气的污染问题,从理论上评述该工艺的可行性。染整定型的能耗占纺织工业总能耗的40%,通过热量回收可以减少定型过程燃料消耗,喷淋洗涤可以对染整定型机废气进行有效的降温,经过冷凝式静电除尘器深度处理,彻底消除透明度差和恶臭气味的影响,达到较高的环境效益。
染整定型机在实际过程中存在治理深度不高的问题,再者由于我国对染整定型机废气的治理起步较晚,缺乏相关的排放标准和适宜的检测方法。由于染整定型机废气含有大量的油类物质,参考饮食业油烟的排放标准和检测方法,通过实验找出简单可行的检测方法,和提出新的控制排放标准。用紫外分光光度法可以有效对染整定型机废气进行检测,但由于测量值为染整定型机废气油烟的质量浓度,用质量浓度作为染整定型机废气排放标准制定的依据,不能有效控制细小颗粒造成不透明度的影响,所以可以用激光粒度仪测量染整定型机废气油烟颗粒数目作为废气的排放标准,因为不透明度仅与颗粒的数目正相关,与质量浓度没有明显的关系,这样可以有效控制染整定型机废气导致不透明度的影响。
通过大量实验验证新工艺中喷淋洗涤和静电除尘两级相连在染整定型机废气处理中的效率,分别考察喷淋水的用量、喷淋水的温度以及喷淋塔进气浓度和温度对油烟去除效率的影响;在冷凝式静电除尘器考察冷凝水的温度、电极形状、进气浓度和温度对处理效果的影响。优化实验条件达到最佳的处理效率,并理论上分析达到理想效果的原因。
The organic assistant and oil which can improve the performance of fabric are heated to volatilize across the high temperature tenter framer. The organic compound, water vapor and heated air form tenter frame exhaust. The exhausts take an acute impact on the surrounding environment and the life of residents. The pollution problems of the tenter frame exhaust are paid more attention at present.
The paper systematically introduces the process of the exhaust generation. It summarizes the feature of the tenter frame exhaust treatment technology which includes mechanic cleaning, heat exchanger, spray scrubber, electrostatic precipitator and incineration and the problem of treatment. Considering the nature of the exhaust which is opaque and malodorous, The paper poses a new control standard of the tenter frame exhaust emission——by control the number of sub-micron particulate matter to control the exhaust emission, in the way the pollution problem of the tenter frame exhaust can be solved. The energy consumption of tenter framer is 40% of all energy consumption. The heat exchanger can reduce the energy consumption; the spray scrubber can make the temperature of exhaust gravitate; the condensing electrostatic precipitator can abate the oil mist and odor. The new technology can achieve the better effect of the environment.
The problem of the tenter frame exhaust treatment is that the mist can’t efficiently treat. The treatment of the tenter framer exhaust is late start. In our country there is lack of relevant emission standard and detection methods. As the tenter framer exhaust contains a large number of oil mists, the emission standard and detection methods can consult the catering fume. Through a simple experiment a viable detection methods and new emission control standards can be found. Using UV spectrophotometer can effectively detect the tenter frame exhaust, but the measurements can only detect the mass concentration of the exhaust. With the mass concentration of tenter framer exhaust emission standards formulated can not effectively control the transparent which small particles result in. Hence laser particle measurement can be used as a number of exhaust particle emissions standards. Because transparency is only correlated with the number of particles and no apparent relationship with the mass concentration, so as to effectively control the transparency effects.
Through simple experimental, the efficiency of the new technology which the spray scrubber and electrostatic precipitator are connected in the tenter framer can be verified. All that the sprinkling of water consumption, water temperature and the sprinkler spray tower inlet concentration and temperature are on the function of removal efficiency; in condensing electrostatic precipitator study, the factors which include the condensed water temperature, electrode shape, inlet concentration and temperature are relevant to the effects of treatment. Optimal conditions for the better efficiency .By theoretical analysis of the reasons the desired results can be Achieved
引文
[1] 张林生,张胜林,夏明芳.印染废水处理技术及典型工程[M].北京:化学工业出版社,2005
[2] 林 文 川 , 庄 锦 烽 . 染 整 业 定 型 机 废 气 特 性 及 控 制 技 术 [J]. 工 业 污 染 防 治 , 1995,(53):49-64
[3] Isaac Ray. Air pollution control in the Textile Industry: a Technology for the 21st Century
[4] Chang-Tang Chang, Ching-Hwa Lee, Yo-Ping Wu, Fu-Tien Jeng. Assessment of the strategies for reducing volatile organic compound emissions in the automotive industry in Taiwan[J]. Resources, Conservation and Recycling, 2002,(34):117-128
[5] 程海军,张应军,方少明等.气相色谱-质谱联用分析棉纶纺纱油烟废气中油类物质的化学成分[J].郑州轻工业学院学报,2006,21(4):16-17
[6] 潘海波,郭宏伟,虞维平等.离心除尘风机气固两相流动的数值模拟[J].流体机械,2005, 33(6):11-13
[7] 郭宏伟,葛仕福.离心风机的试验研究[J].流体机械,2002,30(3):4-5
[8] 陈喜山,李瑛,乔海涛等.油烟过滤-洗涤净化效率的研究[J].环境工程, 2005, 23(6):38-40
[9] 张 金 萍 , 李 德 生 , 李 安 桂 . 饮 食 业 油 烟 净 化 工 艺 新 探 [J]. 环 境 工程,2005,23(2):45-47
[10] 韩庆利.鸡毛用作油烟净化过滤材料的实验研究[J].环境保护科学,2004,30 (126):5-7
[11] 李彩亭,肖辰畅,李珊红等.海泡石颗粒的制备及其吸附油烟效能的研究[J].环境科学与技术,2006,29(4):16-18
[12] X. Gamisans, M. Sarra, F. J., et al. Azzopardi. The hydrodynamics of ejector- Venturi scrubbersand their modeling by an annular flow/boundary layer model[J]. Chemical Engineering Science, 2002,(57):2707-2718
[13] 储嘉铭,江智贤,周建新等.多管文丘里烟气除尘脱硫装置[J].环境工程,2006, 24(1);38-40
[14] 段振亚,胡金榜,胡玲玲等.文丘里洗涤器压力损失试验研究[J].安全与环境学报, 2004,4(6):70-73
[15] 刘云,叶长明,方少明等.水吸收法净化纺丝油剂油烟废气的研究[J].郑州轻工业学院学报,2006,2(1):25-26
[16] 21 世纪纺织工业的空气污染控制设备[J].纺织器材,2000,27(3):59-60
[17] 李荫堂,李安平,王双等.烟气脱硫喷淋塔气体旋流实验研究[J].环境技术,2005, (1):25-28
[18] 胡芳 ,魏在山 ,叶蔚君 .生物填料塔净化恶臭废气的研究 [J].中国给水排水 , 2006,22(13):77-80
[19] 胡满银,赵毅,刘忠.除尘技术[M].北京:化学工业出版社,2006
[20] 范雪琳.湿式静电除尘器常见故障分析及对策[J].煤化工,2005,(1):50-51
[21] 杨亚平,黄惠芬,魏启东.无电晕高温静电除尘技术的最新进展[J].热能动力工程,2003,(18):116-119
[22] 王银生,张国权,王英敏.静电作用下的气溶胶离子在液滴表面沉降效应的研究[J].环境科学学报,1997,17(1):94
[23] Wen-Jhy Lee, Ming-Chu Liow, Perng-Jy Tsaib, Lien-Te Hsieh. Emission of polycyclic aromatic hydrocarbons from medical waste incinerators[J]. Atmos- pheric Environment, 2002,(2):781-790
[24] 孙炳海.极雾化负电晕技术及其在厨房油烟净化中的应用.暖通空调 HV&AC, 2005,8(35):73-74
[25] 郭治明,许德玄,孙英浩等.雾化电晕放电静电除尘的实验研究[J].北京理工大学学报,2005,(25):145-148
[26] 赵建伟 .采用雾化电晕放电技术净化含粘性粉尘的油烟 [D].东北师范大学,2003
[27] Dexuan Xu, Jie Li,Yan Wu, et al. Discharge characteristics and applications for electrostatic precipitation of direct current: corona with spraying discharge electrodes[J]. Journal of Electrostatics, 2003,(57):217-224
[28] Sedlak D., Dumler-Gradl R., Thoma H., et al. Polyhalogenated dibenzopdioxins and dibenzofurans in the exhaust air during textile processings[J]. Chemosphere, 1998,37(9):2071-2076
[29] 王新,刘忠生,王海波等.聚酯生产有机物废气催化燃烧处理工业应用.当代化工,2006,35(4):280-283
[30] 齐湘毅.催化燃烧法处理污水处理场有机废气[J].石油化工环境保护,2006, 29(1):41-42
[31] 申屠灵女.催化燃烧法处理炼油污水处理场臭气.石油化工环境保护,2003, 26(4):2-39
[32] 张楷,马永亮,徐康富.饮食业油烟控制技术现状分析[J].重庆环境科学,2003, 25(4):55-58
[33] 马永亮,张楷,徐康富.饮食油烟控制技术与设备[J].中国环境保护产业协会废气净化委员会,饮食服务业油烟净化技术与市场研讨会论文集,中国宁波, 2002,8-13
[34] 刘从平.饮食业油烟治理中的几个典型问题及对策分析[J].污染防治技术, 2006,19(3):52-54
[35] 徐晓英,汪黎明.船舶柴油机排放微粒机外净化现状及静电除尘技术治理初探[J].军械工程学院学报,2000,(12):62-65
[36] E-IIeek Brucknel 烘干技术公司(德国).用于纺织后整理工业的全套排气处理系统[J].纺织染整,2005,(12): 74-75
[37] 傅平青,程鸿德.印染废水治理研究现状[J].地质地球化学,2001,29(4):86-90
[38] H. Freiberg.Economy Versus Ecology: Exhaust Air Cleaning In Textile Finishing Lines[J]. American dyestuff reporter,1998,87(88): 23-27
[39] 周兴求 .环保设备设计手册-大气污染控制设备 [M].北京 :化学工业出版社,2004
[40] 刘云,叶长明,方少明等.水吸收法净化纺丝油剂油烟废气的研究[J].郑州轻工业学院学报,2006,2(1):25-26
[41] 王喜忠,于才渊,周才君.喷雾干燥[M].北京:化学工业出版社,2003,40-44
[42] 赵吉吉,田贺忠,郝吉明等. 颗粒轨道模型用于烟气脱硫喷淋塔两相流数值模拟[J].环境科学,2005,6(26):33-37
[43] 李荫堂,于涛,李军.烟气脱硫喷淋塔内液滴停留时间[J].环境污染治理技术和设备,2004,10(5):89-91
[44] Dexuan Xu, Jie Li,Yan Wu, et al. Discharge characteristics and applications for electrostaticprecipitation of direct current: corona with spraying discharge electrodes[J]. Journal of Electrostatics,2003,(57):217-224
[45] J.M. Wu, W.Q. Tao. Investigation on laminar convection heat transfer in fin-and-tube heat exchanger in aligned arrangement with longitudinal vortex generator from the viewpoint of field synergy principle[J]. Applied Thermal Engineering,2007,(27):2609-2617
[46] 中国环境保护标准汇编 ,大气质量分析方法 [M]. 北京 :中国标准出版社 , 2000,86
[47] 陈尚芹.环境污染物监测[M].北京:冶金工业出版社,1988,110-112
[48] GB/T 18483-2001, 饮食业油烟采样方法和分析方法 红外分光光度法(试行)
[49] 缪建玉.生物滤塔净化饮食业油烟废气的研究[D].浙江大学,2004
[50] 邓献存.生物法降解低浓度甲苯废气的菌种选育及动力学研究[D].浙江大学, 2003
[51] Barnaby J.Watten, Philip L.Sibrell, Gary A. Montgomery, et al. Tsukuda. Modification of pure oxygen absorption equipment for concurrent stripping of carbon dioxide[J]. Aquacultural Engineering,2004,(32):183-208
[52] Y.Bozorgi, P.Keshavarz, M.Taheri, et al. Simulation of a spray scrubber performance with Eulerian/Lagrangian approach in the aerosol removing process[J]. Journal of Hazardous Materials,2006, (B137):509-517
[53] 谭天恩,麦本熙,丁惠华.化工原理[M].北京:化学工业出版社,1998
[54] 陈敏恒,丛德滋,方图南.化工原理[M].北京:化学工业出版社,1999, 229-231
[55] Seiko Katagi, Yukitaka Kimura, Shuji Adachi. Continuous preparation of O/W nano-emulsion by the treatment of a coarse emulsion under subcritical water conditions[J]. LWT,2007,(40):1376-1378
[56] Tapas Nandy, Pravin Manekar, Rita Dhodapkar, et al. Water conservation through implementation of ultra -filtration and reverse osmosis system with recourse to recycling of effluent in textile industry A case study[J]. Resources, Conservation and Recycling,2007,(51):64-77
[57] Arjen Bot, Franck P. Duval, Wim G. Bouwman. Effect of processing on droplet cluster structure in emulsion gels[J]. Food Hydrocolloids, 2007,(21):844-854
[58] S.H. Park, C.H. Jung, K.R. Jung, et al.. Wet scrubbing of polydisperse aerosols by freely falling droplets[J]. Aerosol Science, 2005, (2):1444-1445
[59] Delphine Daniel-David, Isabelle Pezron, Christine Dalmazzone, et al. Elastic properties of crude oil/water interface in presence of polymeric emulsion breakers[J]. Colloids and Surfaces A: Physicochem. Eng. Aspects, 2005, (270): 257-262
[60] Yves Gorat Stommel, Matthias Kirchhoff, Ulrich Riebel. Experimental results on the influence of concentrated liquid aerosols on the onset voltage of corona discharge[J]. Journal of Electrostatics,2006,(64):82-842
[61] Marek Kocik, Jaroslaw Dekowski, Jerzy Mizeraczyk. Particle precipitation efficiency in an electrostatic precipitator[J]. Journal of Electrostatics, 2005, (63):761-766