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作为化学工程与工艺专业的专业核心课程《化学反应工程》,在国家工程教育认证的背景及"互联网+化学反应工程"课模设计大赛的影响下,从教学内容、教学方法、考核方式等三方面进行教学改革,提高学生的工程能力、学习能力并收获一定成效。 相似文献
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本文对现场实践性教学的4个非工程影响因素进行了分析。我院建立了化学工程与工艺专业现场实践性教学的新模式。实践证明,该模式对提高实习学生绘制PFD能力、工程设计能力、实验模拟能力、工程问题分析能力、动手能力具有显著作用,有助于增强该教学环节的教学效果。 相似文献
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新经济发展模式促进了产业的升级与革新,新时代需要一大批能满足行业需求和国家标准的工程技术人才。文章介绍了“三纵四横”深度立体化实践课程体系的设计与构建,并以华东理工大学过程装备与控制工程专业为例,介绍了该体系的实践。该专业通过“双创”活动培养面向产出、持续改进、适应社会需求、具有综合工程实践与跨界整合能力的创新型工程人才。 相似文献
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将价值工程引入工程建设项目造价管理.阐述了价值工程在建设工程项目全寿命期造价管理中的应用要求,分析了目前我国应用价值工程进行全寿命期造价管理存在的问题,探讨了价值工程进行造价管理的发展趋势. 相似文献
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提高工程专业学位研究生的工程实践质量是深化工程专业学位研究生教育综合改革的重要举措。本文围绕华东理工大学化学工程领域细化和完善工程硕士实践过程的培养要求、构建和健全实践基地管理体制、建立工程实践评价指标体系等方面的实践探索,从注重工程实践教育、打造实践教学基地、形成工程特色鲜明的课程体系、组建校企优秀导师队伍、突出案例教学和工程伦理教育、提升研究生工程创新能力、建立国家级和上海市示范工程硕士实践教学基地等方面进行了分析。 相似文献
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The heat resistance of refractory and ceramic materials is considered from the standpoint of processes of wave formation in
solids. A model and a computational formula are suggested for determining the destructive temperature gradient δTd. The quantity characterizing the dissipation of energy under a thermal load is equal to the ratio of the heat wave to the
longitudinal acoustic wave in the solid body. The analytical formula for the disruptive temperature gradient contains only
fundamental characteristics of the solid body, namely, the coefficient of thermal expansion and the speeds of the heat wave
and the longitudinal acoustic wave, which distinguishes it from the employed criteria of heat resistance that include a strength
parameter. The calculated values of δTd of various refractory and ceramic materials agree well with the experimental data. The concept of a depth of penetration
of the thermal field that is proportional to the mean free path of thermic phonons under the condition of a thermal shock
and determines the value of δTd is suggested. For polycrystalline materials with a density close to the theoretical value the value of δTd is limited by the Debye temperature. In the case of single crystals the value of δTd depends on the mutual orientation of the heat flow and the crystallographic directions in the crystal. The disruptive temperature
gradient in porous materials is determined by the ratio of the rate of fall of the thermal conductivity to that of fall of
the elasticity modulus, depending on the porosity. A formula for calculating the ultimate (critical) heating (cooling) rates
in a one-dimensional formulation is derived. The calculated critical heating rates for parts and specimens agree well with
experimental data. The notion of a characteristic size of a body is introduced and the disruptive temperature gradient is
determined as a quantity numerically equal to the rate of variation of the temperature field in the body (or on its surface)
the characteristic size of which in the direction of the heat flow is numerically equal to the square root of the thermal
diffusivity. A new physical interpretation of δTd is suggested as the critical rate of variation of the temperature field in the body (or on its surface) that corresponds
to the maximum gradient of the internal energy upon attainment of which the interatomic bonds in the body break in planes
parallel to the front of the heat wave. The interatomic bonds break under the condition that the stress in front of the wave
attains an acoustic range that corresponds to the ultimate tensile strength of the material. The developed theory can be useful
in designing and improving refractory and ceramic materials resistant to thermal shock. 相似文献
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《化工机械》2002,29(1)
兰州石化两项“十五”重点项目已经启动 兰州石化公司有两项“十五”发展计划重点项目同日开工建设 :一是 30 0万t a重催装置 ;另一项是乙烯技术改造工程。两项总投资金额为 2 0多亿元。30 0万t重催装置建设工程是千万吨级炼厂的标志工程之一 ,也是兰州石化的效益工程。工程总投资 13 1亿元。包括 30 0万t重油催化裂化、汽油脱硫醇和 45万t气体分馏等工艺装置 ,计划 2 0 0 2年建成。建成后 ,其生产工艺可达到国内外先进水平 ,将从根本上消化兰州石化日益过剩的“黑色产品”———重油。乙烯技术改造工程总投资 7 1138亿元 ,预计 2 0… 相似文献
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