Abstract : using sulfamie acid as catalyst , synthesis of benzyl acetate and phenylethyl acetate through esterification were studied . the yields are good with high purity 文摘:研究了氨基磺酸催化酯化合成乙酸苄酯和乙酸苯乙酯。此工艺反应时间短、能耗低、产品纯度高、产率良好、无三废污染，优于文献方法。
The ecology environment of sea area should be fine , and shouldn t polluted by industrial waste gas , waste water , waste solid matters and the waste of agriculture , urban life and medical offal directly 1 . 1海区环境要求：应是生态环境良好，不直接受工业“三废”及农业，城镇生活、医疗废弃物污染的水域。
Meanwhile , industrial exhausts , sewages and debris , and the use of chemical pesticides pollute the air and water , and endanger the existence of living thing . the number of wild creatures has obviously decreased 同时，工业三废的排放和化学农药的使用，污染了大气和水体，危害生物的生存，使野生动物数量明显下降。
Spares no expense to build environmental protection project . it fulfills three - waste s discharge reaching a set standard . its daily sewage disposal volume may reach to 300 tons “爱护绿色家园”的浙江江北药业有限公司(原台州市江北化工厂) ，为保护生态环境，不惜耗巨资建设环保工程，实现“三废”达标排放，日处理污水量可达300吨。
Its actual operation proves that the three - wastes fluid - bed multifuel burner optimizes the energy source composition , raises the energy efficiency , and improves the environmental quality , leading to the composite results of environmental and economic benefits 实际运行证明，三废流化床混燃炉起到了优化能源结构、提高能源效率与改善环境品质的作用，实现了环保及经济效益的综合效果。
For instance , 100 per cent of the industrial waste gas has its dust particles removed ; about half of the industrial waste water is treated , with the yangbajain geothermal power station alone recycling 21 , 254 , 400 tons of its waste geothermal water 何况这些“三废”中的相当部分已经得到处理，比如工业废气的消烟除尘率达到百分之百；仅羊八井地热电站就回灌地热废水2125 44万吨，其它工业废水的近一半得到处理。
Shbs has contracted tens of project items home and abroad since its establishment , including the equipment design , project construction and operations of fertilizer , fine chemical products , medicine , electricity , gases , and treatment of the three wastes ( waste gas , waste water , industrial residue ) 公司成立至今已承接了国内外几十项工程项目，前后完成了化肥、精细化工、医药、电子、气体、三废治理等装置设计、工程实施及生产运行。
Synthesis methods for p - hydroxybenzaldehyde are reviewed and their advantages and disadvantages are briefly compared , to conclude that direct p - cresol oxygenation is a good method , with calm reaction , simple operation , high yield , high purity and little " three wastes " 叙述了对羟基苯甲醛的各种合成方法，并对各种方法的优缺点作了简要对比，认为对甲酚直接催化氧化法反应平稳、操作简单，收率和纯度高，三废量少，是一种很有前途的合成方法。
Abstract : technical progress of uranium extraction in recent years is introduced , including new processes such as uranium extraction by supercritical co2 fluid , calixarene , capillary electrophoresis , oscillation ; application of novel extractants and absorbents ; and three wastes disposal 文摘:介绍了近年来铀提取方面的技术进展，包括提铀新工艺:超临界co2流体提取铀,杯芳烃提铀,毛细管电泳分离铀,振荡法萃取铀；各国新型萃取剂和吸附剂的应用及三废治理。
The three - wastes fluid - bed multifuel burner utilizes the characteristics of fluid - bed burning and the blow gas waste heat boiler for recovery , and burns the waste gas , ash and residue from the gasifier to produce hot flue gas , which , after dust settling in the multiple dust collector , enters the waste heat boiler to recover waste heat for the generation of high - grade steam to be used in production 摘要三废流化床混燃炉系运用流化床燃烧特点，采用吹风气馀热锅炉回收模式，对造气产生的废渣、废灰、废气混燃，产生热烟气，经组合式除尘器除尘后，进入馀热锅炉回收馀热，生产高品质蒸汽供生产用。
