共查询到18条相似文献,搜索用时 140 毫秒
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简要介绍了水泥窑旁路放风技术,并针对水泥窑旁路放风余热资源的特点,提出了通过窑尾余热锅炉利用这部分余热资源的旁路放风新思路,一方面可解决水泥生产中水泥生产原料、燃料中硫、碱和氯含量较高带来的问题,另一方面可充分利用水泥窑余热资源,提高余热电站的发电量,降低水泥生产的成本. 相似文献
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国外某水泥工厂的旁路放风装置 总被引:1,自引:0,他引:1
介绍了国外某水泥厂旁路放风装置的设计思想、工艺流程、操作参数和使用效果。该厂应用结果表明,在水泥窑上处理工业垃圾导致窑内硫氯碱等挥发组分增加时,采用旁路放风是防止结皮堵塞的有效措施。 相似文献
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通过调研目前的水泥窑旁路放风处理工艺,大都只是进行了粉尘收集处理,对其他污染物没有深度处理,那么对水泥窑协同处置生活垃圾旁路放风系统有必要进行包括粉尘、SO2、NOx等多污染物耦合处理研究。 相似文献
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6利用旁路放风降低有害成分6.1对旁路放风技术的认识在废矿废渣的利用中,有可能出现K2O、Na2O、SO3、Cl-有害成分升高甚至超标的现象,对熟料煅烧甚至产品质量造成影响,而旁路放风能在一定程度上解决这个问题。K2O、Na2O、SO3、Cl-这些有害成分是熔点低、易挥发的物质,在熟料烧成系统中,它们随着生料一起入窑,在达到相应温度时,或气化或挥发,随废气返回预热器内;它们在预热器内与生料 相似文献
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本文介绍了风冷与水冷相结合的旁路放风技术路线,热工计算评价了水冷急冷降温的优势。同时,从理论计算、实例分析及水泥窑生产工艺特点等方面研究,总结了两种急冷方式于NOx基准浓度零影响的结果;论述了从烟室抽取的热烟气未脱硝处置是导致旁路放风于窑尾烟囱NOx基准浓度负面影响的首要原因,在满足氮氧化物达标排放条件下,旁路放风的开启取决于窑尾烟囱烟气中氧含量低于基准氧含量10%,且当NOx排放控制指标趋严时,旁路放风系统可操作的最大放风量将会下降,以致偏离设计放风量的旁路放风系统最终不能有效排出窑系统内的有害元素。 相似文献
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<正>2014年4月3日,天山股份南疆事业部多浪公司收到了国家知识产权总局送发的"水泥窑旁路放风发电锅炉含碱烟气引入工艺及装置"发明专利证书(专利号:ZL 2011 1 0452450.0)。水泥窑旁路放风发电锅炉含碱烟气引入工艺及装置系天山股份南疆事业部多浪公司针对预分解窑水泥熟料生产线的设备特点和生产经营中遇到的实际问题,为降低熟料中的碱含量而发明的工艺及装置,用于预分解窑窑尾的旁路放风,该工 相似文献
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本项目以重油作燃料,但重油中硫含量较高,而且所用原料中挥发性有害成分含量也超出正常指标。基于以上原因,通过加装旁路放风装置,优化工艺操作,项目最终实现了生产线的稳定优质产出。本项目的成功经验表明,只要操作得当,利用旁路放风装置,就能有效降低其对生产熟料的影响,同时也为相似生产线提供了参考经验。 相似文献
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对掺垃圾焚烧飞灰配料进行煅烧,研究了有害组分(碱、氯、硫)的挥发特性,并建立了挥发及冷凝特征模型。试验结果表明:随飞灰掺量的增加和煅烧温度的升高,碱、氯、硫的挥发率提高;但不同飞灰掺量下,熟料对碱、氯、硫的固溶量相近;碱、氯、硫的开始挥发温度点及挥发率随温度上升而增大的规律各不相同;低率值配方(KH=0.90,n=2.0,P=1.1)的挥发率比高率值配方(KH=0.90,n=2.7,P=1.6)小。根据有害组分的挥发及冷凝特征模型,分析得到广州珠江水泥厂窑炉中由碱和氯引起的结皮主要发生在五级筒,由硫引起的结皮主要发生在上升烟道。 相似文献
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Khamtan Phonetip Graham Ian Brodie Barbara Ozarska Benoit Belleville 《Drying Technology》2019,37(10):1300-1312
The purpose of this study was to apply an intermittent drying schedule developed from a conventional kiln to a solar kiln. Implementing this experiment could help better understand the oscillation of the temperature inside a solar kiln and timber quality during drying progress. The theoretical recharge and discharge curves were used to predict the temperature inside the solar kiln using experimental data obtained previously using a solar kiln. The surface and internal checks were measured using ImageJ freeware, and the development of the Moisture Content (MC) profile was assessed by coring and slicing method for the Eucalyptus delegatensis boards during drying. The results showed that the recharge and discharge model can predict the temperature with less than 2?°C error from the experimental data in the solar kiln. The total drying time to 12% MC was 87?days for the solar kiln. The drying rate was equivalent to the conventional kiln decreasing at an average rate of 0.2% per day. The surface check formation was found when the MC gradient between the core and the case of the board was greater than 42% at 9?days of drying in the solar kiln and conventional laboratory kiln. The applied drying schedule used in the solar kiln was successful and offered similar drying time. However, the oscillation of temperature in the intermittent drying will require further improvement to get closer conditions in a solar kiln. 相似文献
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Axial bed depth profiles were experimentally measured in a rotary kiln containing ilmenite particles under steady state and transient conditions. The variables include feed rate of solids, inclination and rotational speed of the kiln. and dam height. The variation of the axial velocity with kiln axis was estimated. The semi-experimental model proposed by Perron and Bui (1990) was modified to include the effect of the variables of the present study. The mean residence time of solids was estimated from the fractional hold-up and expressed in terms of the process variables. The transients induced by a step change in any of the operating conditions were measured as variation of discharge rate of solids with time. 相似文献
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根据麦尔兹石灰窑特点,结合邯郸麦尔兹石灰窑生产经验,介绍了当11m卸料平台温度过高时需要检查的设备及采取的相应措施。控制好麦尔兹石灰窑11m卸料平台温度,有利于生产优质产品,并延长石灰窑的使用寿命。 相似文献