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排序方式: 共有454条查询结果,搜索用时 15 毫秒
411.
陈健 《石油化工环境保护》2006,29(3):36-37,51
为了系统地、高效地开展好油田企业的清洁生产审核工作,针对石油行业的特点,结合清洁生产审核的基本要求,简要介绍清洁生产审核组织的建立、审核方法的运用、审核重点的把握等五个方面的内容。 相似文献
412.
Mohammad Dadashzadeh Faisal Khan Kelly Hawboldt Rouzbeh Abbassi 《Process Safety and Environmental Protection》2011,89(5):295-299
Fugitive emission rate quantification in an oil and gas facility is an important step of risk management. There are several studies conducted by the United States Environmental Protection Agency (USEPA) and American Petroleum Institute (API) proposing methods of estimating emission rates and factors. Four major approaches of estimating these emissions, in the order of their accuracy, are: average emission factor approach, screening ranges emission factor approach, USEPA correlation equation approach, and unit-specific correlation equation approach. The focus of this study is to optimize the USEPA correlation equations to estimate the emission rate of different units in an oil and gas facility. In the developed methodology, the data available from USEPA (1995) is used to develop new sets of equations. A comparison between USEPA correlation equations and the proposed equations is performed to define the optimum sets of equations. It is observed that for pumps, flanges, open-ended lines, and others, the proposed developed equations provide a better estimation of emission rate, whereas for other sources, USEPA equations supply the better estimate of emission rate. 相似文献
413.
Agricultural expansion and deforestation are spatial processes of land transformation that impact on landscape pattern. In
peninsular Malaysia, the conversion of forested areas into two major cash crops—rubber and oil palm plantations—has been identified
as driving significant environmental change. To date, there has been insufficient literature studying the link between changes
in landscape patterns and land-related development policies. Therefore, this paper examines: (i) the links between development
policies and changes in land use/land cover and landscape pattern and (ii) the significance and implications of these links
for future development policies. The objective is to generate insights on the changing process of land use/land cover and
landscape pattern as a functional response to development policies and their consequences for environmental conditions. Over
the last century, the development of cash crops has changed the country from one dominated by natural landscapes to one dominated
by agricultural landscapes. But the last decade of the century saw urbanization beginning to impact significantly. This process
aligned with the establishment of various development policies, from land development for agriculture between the mid 1950s
and the 1970s to an emphasis on manufacturing from the 1980s onward. Based on a case study in Selangor, peninsular Malaysia,
a model of landscape pattern change is presented. It contains three stages according to the relative importance of rubber
(first stage: 1900–1950s), oil palm (second stage: 1960s–1970s), and urban (third stage: 1980s–1990s) development that influenced
landscape fragmentation and heterogeneity. The environmental consequences of this change have been depicted through loss of
biodiversity, geohazard incidences, and the spread of vector-borne diseases. The spatial ecological information can be useful
to development policy formulation, allowing diagnosis of the country’s “health” and sustainability. The final section outlines
the usefulness of landscape analysis in the policy-making process to prevent further fragmentation of the landscape and forest
loss in Malaysia in the face of rapid economic development.
相似文献
Adnan A. HezriEmail: |
414.
含硫污水油—水旋流分离技术研究 总被引:6,自引:0,他引:6
介绍了自行研究开发的适用于炼油含硫污水除油的新型旋流器 ,利用这种高效、节能的污水除油技术 ,油珠的最小分离粒径为 1 0 μm,平均除油效率为 66%。 相似文献
415.
416.
河流泥沙吸附石油的实验研究 总被引:1,自引:0,他引:1
研究河流中的泥沙对石油的吸附和解吸规律对建立水质数学模型及水质预测预报具有重要意义,可为水域石油污染的治理提供依据。本文根据静态实验研究成果,建立了通用的吸附反应方程,在水槽中进行了均匀输沙吸附实验,并用解析解进行计算与动态实验结果进行比较,其结果较为理想。最后对河流底沙的吸附进行了初步探讨,分析了石油向底沙层扩散的过程。 相似文献
417.
基于遥感的海洋溢油监测方法 总被引:1,自引:0,他引:1
石油及其产品大量进入海洋将对生态和经济产生严重危害。现代遥感技术可实时获取溢油相关信息,在溢油应急响应中扮演着重要的角色。文章以遥感平台及手段为切入点,介绍和分析遥感溢油监测现状,在遥感溢油监测向着多平台、多传感器、多源数据综合观测的方向发展的前提下,除依靠传统遥感(可见光/近红外,微波)外,需加强紫外遥感溢油监测研究,并注重高光谱和偏振溢油遥感。 相似文献
418.
Ali Deriszadeh Thomas G. Harding Maen M. Husein 《Process Safety and Environmental Protection》2008,86(4):244
The high demand for water in oil sands operations in addition to the shortage of fresh water resources mandate continuous search for reliable and cost effective water treatment technologies. Micellar-enhanced ultrafiltration (MEUF) is potentially applicable to produced water treatment. MEUF is, however, susceptible to membrane plugging and back contamination, especially at high surfactant dosages. Recent investigations showed that addition of small amounts of a non-ionic surfactant to an ionic surfactant solution reduces the critical micellar concentration (CMC) of the mixed surfactant solution, and consequently reduces the surfactant dosage required to achieve certain removal of contaminants using MEUF. In the present study a naphthenic acid, octanoic acid, typically existing in produced water is shown to play a similar role as the non-ionic surfactant when added to the cationic surfactant cetylpyridinium chloride (CPC). Cross-flow MEUF using three different molecular weight cutoffs (MWCOs) of polyacrylonitrile (PAN) hollow fiber membranes was used to treat synthetic produced water containing p-xylene. The mixed CPC/octanoic acid solution removed comparable percentages of p-xylene contaminant at much lower concentrations of CPC. Decreasing CPC concentration in the feed resulted in less fouling and higher permeate flux and reduced back contamination. This, in turn, enhanced the performance of MEUF. 相似文献
419.
The complexity of the processes and the nature of volatile petroleum products urged the oil and gas industry to utilize various risk assessment techniques to identify potential failure modes that can interrupt operation processes. Consequently, government agencies and nonprofit professional societies guide the industry with regulatory guidelines, standards, and best recommended practices to oversee the operations management, assure safe working environment, and contain failures within tolerable limits. Yet, accidents due to electro-mechanical failures still occur and result in various consequences. Accordingly, critics have raised concerns about the petroleum industry's safety and risk mitigation credentials and question its ability to prevent future major accidents. Therefore, new risk assessment tools need to be introduced to provide decision makers and novice engineers with a diverse perception of potential risks. The aim of this paper is verify the application of Risk in Early Design (RED), a product risk assessment tool, in identifying potential failures in the oil and gas industry. Approximately thirty major accident underwent the RED analysis to verify the software's application to identify and rank potential failure modes. 相似文献
420.