群策群力,推动立式锅炉消烟除尘工作

在批林批孔运动的推动下,我部三十六台锅炉,除准备更新、搬迁的以外,其余都采取了消烟除尘措施,减轻了烟尘的污染。回顾近几年工作,有以下体会。一、以路线斗争为纲,提高对消烟除尘工作的自觉性过去,我部在有关科研单位的帮助下,为解决消烟除尘问题,改革了一批锅炉,取得了较好效果。1 973年,我们再接再励,对剩余的锅炉在自制立式横水管锅炉加装了蒸汽导风器,由于炉膛内经导风器诱导进了二次空气,

Possibility of Sea Water as Mixing Water in Concrete

In the near future, fresh water will be very difficult to get and scarce. It is said that in 2025 half of the mankind will live in the areas where fresh water is not enough. Also, UN and WMO （World Meteorological Organization） are predicting five billion people will be in short of even drinking water. Also, in the present, there are some areas where sea water or chloride contained sand are used as mixing water with or without intension. The authors believe that the possibilities of using sea water as mixing water in concrete should be investigated seriously. In this paper, the authors would like to show various possibilities of using sea water as mixing water in RC （reinforced concrete） members. The possibilities are shown as follows： （1） mixed with pozzolanic materials （Blast furnace slag powder, etc.） expecting to fix the free chloride ion; （2） Mixed with corrosion inhibitor; （3） reinforced with stainless steel or corrosion resistant reinforcement; and （4） used in very dry or submerged conditions.

不同能源沸水器具的综合分析

对燃气沸水器、燃煤茶炉、燃油茶炉和电水壶的年运行费及对环境影响的进行量化分析 ,燃气沸水器的年运行费仅高于燃煤茶炉 ,对环境的污染最轻。