高炉煤气事故分析

高炉煤气是冶金企业炼铁过程中产生的副产品，是经过高炉鼓风机加压，再经热风炉加热的热空气进入高炉后，与炉内的烧结矿、     

美国旧金山立法禁用化工塑料袋

据美国当地媒体2007年3月28日报道，旧金山市议会2007年3月27早日以10票赞成、1票反对的投票结果通过了禁止超市、药店等零售商使用化工塑料袋法案，从而成为通过此类环保法案的第一个美国城市。法案规定，旧金山的超市和药店等零售商只允许向顾客提供纸袋、布袋或以玉米副产品为原料生产的可生物降解塑料袋，     

我国棉副产品资源开发利用分析

本文分析了棉秆、棉籽壳、棉籽饼和棉油皂脚的开发途径和利用技术,并从我国经济现状和技术水平出发,提出了应该重点开发的领域。     

论磷石膏的出路问题

1987年,全世界的磷肥厂产生了大约1.5亿吨副产品磷石膏。这些磷石膏几乎都没有利用,其中的1.3亿吨不是随便堆放着就是被倒到了海里。环境保护工作者们的不满和政府机构的干预,使美国和西欧地区的P_2O_5厂商头痛得很。可以这样说:美国和欧     

大唐鲁北发电公司脱硫副产品回收利用研究

氧化镁湿法脱硫技术相比其他烟气脱硫技术具有独特的技术优势,但其脱硫副产品一直无法得到合理的回收利用,制约了该脱硫技术的广泛推广。目前,大部分采用该技术的企业选择将副产品直接丢弃,无法为企业创造利润,同时也造成环境污染。根据公司现状,研究合适的脱硫副产品氧化制硫酸镁工艺流程,不仅可以为企业创造可观的经济效益,也降低了溶液中的COD含量,对吸收塔、浆液循环泵等设备的磨损也将大大降低。     

Conversion of the refractory ammonia and acetic acid in catalytic wet air oxidation of animal byproducts

Wet air oxidation (WAO) and catalytic wet air oxidation (CWAO) of slaughtered animal byproducts (ABPs) were investigated. Two step experiment was carried out consisting of a non-catalysedWAO run followed by a CWAO run at 170–275°C , 20 MPa, and reaction time 180 min. TheWAO (1st step) of sample (5 g/L total organic carbon (TOC)) yielded (82.0 4)% TOC removal and (78.4 13.2)% conversion of the initial organic-N into NH4 +-N. Four metal catalysts (Pd, Pt, Rh, Ru) supported over alumina have been tested in catalytic WAO (2nd step) at elevated pH to enhance ammonia conversion and organic matter removal, particularly acetic acid. It was found that the catalysts Ru, Pt, and Rh had significant e ects on the TOC removal (95.1%, 99.5% and 96.7%, respectively) and on the abatement of ammonia (93.4%, 96.7% and 96.3%, respectively) with high nitrogen selectivity. The catalyst Pd was found to have the less activity while Pt had the best performance. The X-Ray di raction analysis showed that the support of catalyst was not stable under the experimental conditions since it reacted with phosphate present in solution. Nitrite and nitrate ions were monitored during the oxidation reaction and it was concluded that CWAO of ammonia in real waste treatment framework was in good agreement with the results obtained from the literature for ideal solutions of ammonia.