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1.
精馏过程的节能,对于减少能源消耗,降低生产成本和保护环境具有十分重要的意义.在精馏过程中可以采用最适宜回流比操作和最佳进料状态,使用中间冷凝器和中间再沸器,高效精馏、热泵精馏.合理安排多组分物料分离流程,直接利用过程热量及开发应用高效换热器等措施.本文从最佳回流比R的选择、进料温度及进料状态的确定等方面,详细的分析了在精馏塔的设计过程中,如何实现设计的优化问题,以实现节能降耗. 相似文献
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经济新区正在成为我国新的经济增长点,但在经济迅速发展的同时,也将产生新的问题.在经济新区建设过程中,实现科学发展、社会和谐需要创新经济社会管理服务体制.以天津滨海新区建设为例,从新区自身需要以及民间组织特点两方面论述了民间组织在区域协调发展中的功能,并在此基础上,对民间组织、政府提出了相应的对策组合,以此促进经济新区经济社会持续、健康、和谐发展. 相似文献
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王亚卓 《中小企业管理与科技》2021,(6)
高速公路建设规模大、建设周期长、资源消耗集中,与社会进步、经济发展和环境条件密切关联,对于环境保护和水土保持既有积极作用,又有消极影响。论文主要结合中川机场T3航站楼连接线建设项目环水保管理方面的一些经验和做法,探讨高速公路建设项目环水保在施工阶段的管理控制要素,提出了环水保标准化管理的建议,供高速公路及其他建设项目的环境保护和水土保持管理提供参考。 相似文献
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We analyse a disregarded environmental policy instrument: a switch in government expenditure away from energy (or other natural
resources) and toward a composite good which includes energy-saving expenditure. We first develop two variants of an analytical
general equilibrium model. A composite good is produced with constant returns to scale, and energy is imported or produced
domestically with diminishing returns, yielding a differential rent to its owners. The government purchases energy and composite
goods from private firms. Such a policy unambiguously increases employment. It also raises private consumption and welfare
under two conditions: (i) it is not too costly and (ii) the initial share of the resource is smaller in public spending than
in private consumption, or the difference is small enough. We then run numerically a model featuring both importation and
domestic production of energy (oil, gas and electricity), for the OECD as a whole. Simulations show that employment, welfare
and private consumption rise. We provide magnitudes for different parameter values.
Earlier versions of this paper have benefited from conference participants at the European Council for an Energy-Efficient
Economy, International Society for Ecological Economics World Congress, CIRED seminar and EUREQua environmental economics
seminar. We especially thank Michèle Sadoun and two anonymous referees. The usual disclaimer applies. 相似文献
7.
黑河流域生态环境保护和建设 总被引:1,自引:0,他引:1
柴发熹 《生态经济(学术版)》2002,(9):69-71
黑河是我国西北地区一个较大的内陆河,该流域由于人口压力,林牧矛盾,水资源粗放利用,出现了严重的土地沙化,盐化,沙尘暴等生态问题,本文提出应执行抢救性水源林生态环境建设,合理配置和科学利用水资源,实施跨流域调水等补水工程,构建生态农业体系的发展方略,实现黑河流域生态良性循环,促进区域经济,社会的可持续发展。 相似文献
8.
Jane Kabubo-Mariara 《Ecological Economics》2007,64(1):25-35
Land conservation technologies used by farmers are known to play an important role in improving farm incomes and household welfare in the long run. For this reason substantial investments have been made in research to improve agricultural technologies in various parts of the world, from the development of new crop varieties to new practices of land management. This paper explores the impact of land rights among other factors on adoption of soil and water conservation practices. The study further tests for Boserup's hypothesis (correlation between population density, land conservation and property rights) using panel survey data collected from farming households. The key findings of the paper are that property right regimes and population density affect both the decision to conserve land as well as the type of conservation practices used by farmers. The results further suggest a positive correlation between land tenure security and population density, thus supporting Boserup's hypothesis. The findings call for pursuit of both short-term and long-term policy measures that offer incentives for land conservation through government initiatives and participation of local communities. 相似文献
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A. Lans Bovenberg 《Environmental and Resource Economics》1993,3(3):233-244
Taxes may seem to be the most attractive instrument for curbing the emissions of carbon dioxide. This paper, however, argues that environmental taxes involve a number of serious complications — especially in an open economy riddled with market imperfections like the Netherlands. Therefore, a wide-ranging policy mix is called for. As far as households and sheltered sectors are concerned, regulation can continue to play a major role. Within the context of unilateral policies aimed at exposed sectors, the combination of subsidies and voluntary agreements may be more cost effective than the tax instrument.This paper was prepared for a conference on Energy Taxation in Europe organized by the Stichting voor Economisch Onderzoek (SEO) and held on December 13, 1991 in Amsterdam, the Netherlands. The author would like to thank Sijbren Cnossen, Jarig van Sinderen and one anonymous referee for helpful comments on an earlier draft. 相似文献