金属陶瓷电极的性能及可靠性的实验研究
发布时间：2018-09-14 11:28
【摘要】：随着人们对生存环境要求的日益严格,环境污染也得到了社会各界的广泛关注,现如今空气中的粉尘浓度严重超标,导致雾霾天气的频繁出现,而空气中的粉尘主要是源于燃煤电厂的排放。虽然我国环保标准的不断提高,但是对粉尘的控制也不甚理想。电除尘器作为燃煤电厂处理烟气的主要手段之一,近几年来越来越多的人将目光放在对电除尘器的改进上。通过对电除尘器本体的改进,来提高除尘效率,以达到对环境污染治理的目的。本文针对用金属陶瓷替代传统的电除尘器的钢极板进行可行性论证,以研究用金属陶瓷这一新型材料替代传统电除尘器的钢材极板。首先,用泡沫金属同二硼化钛和铁、钴、钼的粉末(体积比1:1:1:7)进行过量浸渍负载制备金属陶瓷。去除表面多余的粉末,产物在真空条件下于800℃、900℃、1000℃、1100℃、1200℃的温度梯度下进行烧结。通过实验结果发现,用泡沫金属所负载的金属陶瓷板烧制出来的硬度相对较差,达不到使用标准。再对混合粉末(铁、钴、钼及二硼化钛粉末体积比为1:1:1:7)缓慢加压到30Mpa,在该压力下维持1分钟。之后将压制成型的混合粉末,于真空条件下进行高温烧结。本研究针对金属陶瓷替代传统的电除尘器极板进行可行性论证。将自己制备的金属陶瓷同购买的商用金属陶瓷进行导电性、硬度、致密性、板电流密度、高温抗氧化性等特性的对比。通过SEM、XRD、金相显微镜等手段,从本质上分析自制的金属陶瓷的各种性能变化。最后再将金属陶瓷和铁、不锈钢等传统极板材料性能进行对比分析,研究用金属陶瓷的优异之处,及替代传统的钢极板的可能性。以上的研究结果表明:相比于传统的极板材料,金属陶瓷的密度、耐高温腐蚀性和致密性更加优异,而烧结样品的硬度和导电性不如传统的钢板材料,但相差不大。根据其综合性能来考虑,金属陶瓷可以替代传统的钢板材料,作为湿式电除尘器的极板。通过研究可以得出以下结论:金属陶瓷作为电除尘器电极具有可靠性。用金属陶瓷替代传统钢板做电除尘器的极板具有非常大的应用前景。用金属陶瓷对除尘器极板进行改造,也能有效的提高除尘器的除尘效率。
[Abstract]:With the increasingly stringent requirements for the living environment, environmental pollution has been widely concerned by all walks of life. Nowadays, the dust concentration in the air is seriously exceeding the standard, resulting in frequent occurrence of haze weather. Dust in the air is mainly due to emissions from coal-fired power plants. Although our country environmental protection standard unceasingly enhances, but to the dust control also is not very ideal. As one of the main means of treating flue gas in coal-fired power plants, more and more people pay attention to the improvement of electrostatic precipitators in recent years. The dust removal efficiency is improved by improving the body of the electrostatic precipitator in order to achieve the purpose of environmental pollution control. In this paper, the feasibility of using cermet to replace the steel plate of the traditional electrostatic precipitator is demonstrated in order to study the replacement of the steel plate of the traditional electrostatic precipitator with cermet as a new material. Firstly, the metal ceramics were prepared by impregnating the foam metal with titanium diboride, iron, cobalt and molybdenum powder (volume ratio 1: 1: 1: 7). The superfluous surface powder was removed and the product was sintered under the temperature gradient of 800 鈩，
本文编号：2242576
[Abstract]:With the increasingly stringent requirements for the living environment, environmental pollution has been widely concerned by all walks of life. Nowadays, the dust concentration in the air is seriously exceeding the standard, resulting in frequent occurrence of haze weather. Dust in the air is mainly due to emissions from coal-fired power plants. Although our country environmental protection standard unceasingly enhances, but to the dust control also is not very ideal. As one of the main means of treating flue gas in coal-fired power plants, more and more people pay attention to the improvement of electrostatic precipitators in recent years. The dust removal efficiency is improved by improving the body of the electrostatic precipitator in order to achieve the purpose of environmental pollution control. In this paper, the feasibility of using cermet to replace the steel plate of the traditional electrostatic precipitator is demonstrated in order to study the replacement of the steel plate of the traditional electrostatic precipitator with cermet as a new material. Firstly, the metal ceramics were prepared by impregnating the foam metal with titanium diboride, iron, cobalt and molybdenum powder (volume ratio 1: 1: 1: 7). The superfluous surface powder was removed and the product was sintered under the temperature gradient of 800 鈩，
本文编号：2242576
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