我国现行环境统计指标体系改进方向

我国现行环境统计指标体系在指标的选择和可操作性方面存在缺陷和不足,主要表现为污染物排放量的计算方法模糊、污染物排放标准未能得到有效实施、非重点工业排放量取值比例有待调整、污染源调查范围不能与时俱进、环境质量指标体系未纳入环境统计,这些问题需进一步完善,才能更好地适应环境管理工作需要。     

简易石灰石/石膏湿法烟气脱硫技术在连州电厂的应用

在介绍了连州电厂的广东省第一套简易石灰石／石膏湿法烟气脱硫（FGD）系统主要设计参数和工艺流程的基础上，重点对FGD系统在近2年的运动过程中出现的主要问题进行了分析，包括系统与锅炉的相互影响，烟道腐蚀问题，脱硫石膏与灰渣水的混排及吸收塔内搅拌器叶片的损坏等，同时从技术，经济两方面对该套FGD系统进行了总体的评价。     

浅议排污申报登记与环境监理的关系

阐述了排污申报登记与环境监理的关系。指出，排污申报的作用 应当体现在对污染源监理的全过程中，应对申报数据进行核查，形成一个有效的污染源动态管理系统，并建立相应的污染源动态信息库。     

污染物排放总量控制和排污权交易对清洁生产的促进作用

对污染物排放总量控制和排污权交易及清洁生产进行了系统分析 ,指出了三者之间的内在联系。论述了污染物总量控制和排污权交易的市场运作机制 ,以及对推行清洁生产的促进作用。并阐述了清洁生产为实现总量控制目标所发挥的作用。     

沈阳市实现污染减排的对策措施研究

对沈阳市污染物总量排放状况进行了系统分析,提出污染减排目标指标体系,要实现减排目标,必须采取调整、发展、治理、监管、支撑、保障六大措施。     

石油化工产品储运系统安全排放技术措施

针对石油化工产品储运系统在正常情况和事故情况下,因排放可燃液体、可燃气体或蒸气可能带来的火灾爆炸危险,阐述了在工艺上和设计上安全排放应采取的防火防爆安全技术措施.     

Experimental energy and exergy analyses of a discharging heat exchanger for a small hot-oil domestic storage tank

Experiments are described to investigate the thermal performance of a discharging heat exchanger for a small storage tank filled with oil. Experimental results are presented in terms of the discharging energy rates (power) and the discharging exergy rates for low (~4 ml/s) and high discharging flow rates (~8 ml/s). Water heating energy rates, which are respectively maximized at approximately 600 W and 1200 W at low and high flow-rate discharging, are found to be higher than the discharging energy rates, which are respectively maximized at 450 W and 900 W. These results indicate that the energy rates do not accurately evaluate the thermal performance of the discharging heat exchanger since the energy heating rate of the water is greater than that for the oil that heats it, which is thermodynamically inconsistent. The energy rates should thus be used with caution when the thermal performance of the heat exchanger is evaluated. Water heating exergy rates, which are respectively maximized at approximately 45 W and 130 W at low and high flow-rate discharging, are generally smaller than the discharging exergy rates, which are respectively maximized at 65 W and 170 W. Exergy rate results are thus more consistent in the physical process of water heating, and an exergy factor is suggested as a proper measure for evaluating the performance of the discharging heat exchanger. The maximum value of the exergy factor is found to increase from 0.15 at low flow rates to a maximum value of approximately 0.19 at high flow rates. This implies that to extract more energy from a storage tank to a discharging heat exchanger, the flow rate has to be high, which is consistent with the physical process of heating water faster to higher temperatures. The exergy factor can thus be used as a design parameter for discharging heat exchangers.