Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 281

会议视频 11

会议信息 1

年份

2023 21

2022 36

2021 31

2020 21

2019 26

2018 16

2017 10

2016 16

2015 20

2014 15

2013 8

2012 9

2011 12

2010 8

2009 6

2008 7

2007 12

2006 2

2005 3

2002 2

展开︾

关键词

碳中和 7

节能减排 4

环境 3

可持续发展 2

地球物理 2

增材制造 2

情景分析 2

2型糖尿病 1

3D打印 1

BFT 1

CO₂ EOR 1

CO₂净排放量 1

CO₂封存 1

Casimir力 1

Electron 1

H∞控制；零和动态博弈；强化学习；自适应动态规划；极小极大Q-学习；策略迭代 1

Kaya 恒等式 1

Photo-emission 1

Pt–Ba–Ce/γ-Al₂O₃ 催化剂，物理化学性质，NO_x存储和还原，NO_x 排放，H₂ 还原剂 1

展开︾

检索范围：

排序：展示方式：

Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

《工程管理前沿（英文）》 2014年第1卷第1期页码 37-41 doi: 10.15302/J-FEM-2014007

摘要： Developing a "near-zero emission" coal-based clean energy ecosystem bears great significance for the sustainable development of clean energy in China and the world at large. This article delves into the development strategy, implementation pathways and key priorities of China's "near-zero emission" coal-based clean energy ecosystem, and in turn proposes specific measures to underpin the development and implementation of such system.

关键词： near-zero emission clean energy ecosystem study on the path

HTML PDF 收藏

Optimization and performance prediction of a new near-zero emission coal utilization system with combined

GUAN Jian, WANG Qinhui, LI Xiaomin, LUO Zhongyang, CEN Kefa

《能源前沿（英文）》 2007年第1卷第1期页码 113-119 doi: 10.1007/s11708-007-0013-y

摘要： In accordance with the new near-zero emission coal utilization system with combined gasification and combustion, which is based on the CO acceptor gasification process, the product gas composition of the gasifier and the combustor was calculated by means of thermodynamic equilibrium calculation software FactSage 5.2. Based on these calculations, the whole system efficiency calculation method that complies with the mass and energy conservation principle was established. To enhance the system efficiency, the system pressure and the gasifier carbon conversion ratio were optimized. The results indicate that the system efficiency increases with increasing pressure and gasifier carbon conversion ratio. After taking into consideration the influence of the pressure and carbon conversion ratio on the performance of the system, the gasifier and the combustor were synthetically studied. The optimum system pressure and carbon conversion ratio were obtained as 2.5 MPa and 0.7, respectively. The system efficiency could reach around 62.1% when operated in these two optimum parameters. If the advanced ion transport membrane (ITM) air separation technology is used, there would be an increase of another 1.3%.

关键词： influence efficiency calculation optimum software FactSage transport

HTML PDF 收藏

清洁煤电大气污染物近零排放技术与工程应用 Article

王树民

《工程（英文）》 2020年第6卷第12期页码 1408-1422 doi: 10.1016/j.eng.2019.10.018

摘要：

我国能源以煤为主，发电是煤炭消费第一大户。针对煤电大气污染物排放带来的严峻生态环境问题，本文开展了清洁煤电近零排放技术研究与工程实践，评估了近零排放机组长周期运行状态，并探究了重金属汞协同和专门控制技术。结果表明，提出的近零排放技术路线煤质适应性强，应用到全国101台燃煤机组，大气污染物烟尘、SO₂、NO_x排放浓度低于燃气发电排放限值，长周期运行时排放浓度小时均值达标率超过99%，发电成本增加约0.01 元·(kW·h)^–1。污染物总排放量降低约90%，有效改善了环境空气质量。近零排放机组汞排放浓度为0.51~2.89 μg·m^–3，投运改性飞灰（MFA）专门脱汞系统，汞排放浓度可低至0.29 μg·m^–3，相同脱除效果下运行成本仅为国际主流活性炭脱汞的10%~15%。通过50 000 m³·h^–1燃煤烟气中试平台研究，掌握了多污染物脱除过程中相互影响规律，形成了排放达到不同浓度限值的解决方案；结合示范应用，提出并实现了新的近零排放煤电“1123”生态环保排放限值，即烟尘、SO₂、NO_x和汞及其化合物排放浓度分别不高于1 mg·m^–3、10 mg·m^–3、20 mg·m^–3和3 μg∙m^–3，为“提高污染排放标准”提供了工程技术支撑。

关键词：清洁煤电大气污染物近零排放中试平台 “1123”生态环保排放限值

HTML PDF 收藏

碳边境调节机制下近零碳制造体系建设研究

成润婷 ,张勇军 ,李立浧 ,丁茂生 ,林靖淳 ,章春锋 ,韩永霞

《中国工程科学》 doi: 10.15302/J-SSCAE-2023.07.037

摘要：

在国家“双碳”战略目标、欧盟碳排放交易体系改革的双重驱动下，我国制造业实施节能、减污、降碳协同增效，尽快实现低碳和零碳转型，成为关注焦点和发展亟需。本文重点探讨了欧盟碳边境调节机制（CBAM）对我国制造业的影响，基于此梳理了近零碳制造体系的概念特征，从关键技术、计量基础、市场驱动力等主要维度出发，详细阐述了近零碳制造体系的核心内容。分别从产品制造、电力供应两方面，提炼了近零碳制造体系的技术发展方向，建议形成“源网荷”碳计量系统以细化碳排放责任；借鉴国外碳市场发展经验并分析我国碳市场发展格局，在理论层面探讨了未来我国碳市场构建路径以促进近零碳制造体系发展。提出的近零碳制造体系实践方案，可为深化“双碳”背景下我国制造业高质量发展、开展CBAM背景下我国制造业低碳转型建设研究提供先导性和基础性参考。

关键词：欧盟碳排放交易体系；碳边境调节机制；零碳转型；碳排放计量；碳市场

HTML PDF 收藏

GREENHOUSE GAS AND AMMONIA EMISSION MITIGATION PRIORITIES FOR UK POLICY TARGETS

《农业科学与工程前沿（英文）》 2023年第10卷第2期页码 268-280 doi: 10.15302/J-FASE-2023495

摘要：

● An expert survey highlighted the most effective strategies for GHG and ammonia mitigation.

关键词： agriculture ammonia greenhouse gas mitigation net zero

HTML PDF 收藏

A coal-fired power plant integrated with biomass co-firing and CO capture for zero carbon emission

《能源前沿（英文）》 2022年第16卷第2期页码 307-320 doi: 10.1007/s11708-021-0790-8

摘要： A promising scheme for coal-fired power plants in which biomass co-firing and carbon dioxide capture technologies are adopted and the low-temperature waste heat from the CO₂ capture process is recycled to heat the condensed water to achieve zero carbon emission is proposed in this paper. Based on a 660 MW supercritical coal-fired power plant, the thermal performance, emission performance, and economic performance of the proposed scheme are evaluated. In addition, a sensitivity analysis is conducted to show the effects of several key parameters on the performance of the proposed system. The results show that when the biomass mass mixing ratio is 15.40% and the CO₂ capture rate is 90%, the CO₂ emission of the coal-fired power plant can reach zero, indicating that the technical route proposed in this paper can indeed achieve zero carbon emission in coal-fired power plants. The net thermal efficiency decreases by 10.31%, due to the huge energy consumption of the CO₂ capture unit. Besides, the cost of electricity (COE) and the cost of CO₂ avoided (COA) of the proposed system are 80.37 $/MWh and 41.63 $/tCO₂, respectively. The sensitivity analysis demonstrates that with the energy consumption of the reboiler decreasing from 3.22 GJ/tCO₂ to 2.40 GJ/ tCO₂, the efficiency penalty is reduced to 8.67%. This paper may provide reference for promoting the early realization of carbon neutrality in the power generation industry.

关键词： coal-fired power plant biomass co-firing CO₂ capture zero carbon emission performance evaluation

HTML PDF 收藏

以上海10 km² 的近零能耗区项目为例浅谈作为城市基础设施的人力- 能源-水资源联动系统的地理设计方案 Article

Perry Pei-Ju Yang, Cheryl Shu-Fang Chi, Yihan Wu, Steven Jige Quan

《工程（英文）》 2018年第4卷第2期页码 182-189 doi: 10.1016/j.eng.2018.03.014

摘要：

日益显著的气候变化对新的城市设计模式提出了巨大的挑战，我们需将如能源、水资源的使用效率等城市系统的性能元素纳入考虑范围。传统的城市设计模式注重形式的设计过程，却缺乏性能维度的考量。地理设计是一种新兴的方法，该方法更加强调系统性思维、数字技术与地理环境之间的联系。本文介绍了该领域大规模合作研究第一阶段的研究成果，并进一步提出了一种用于区域规模城市设计的地理设计方案，以整合可再生能源生产系统、能源消耗系统及雨水管理系统等，并兼顾了人类的城市生活体验。该方案结合了地理信息系统（GIS）、参数化建模技术和多学科设计优化（MDO）工具，可实现协同设计决策。为了实现近零能耗城市实验区的设计，该方案通过了测试案例的反复推演与调整。我们最终的方案有如下3 个特点：①集成的地理设计和参数化设计：方案采用参数化设计方法，通过自定义程序算法生成焦点尺度的原型，并应用地理设计来评估设计方案的性能；②关注设计流程：方案阐述了设计过程中的问题定义标准、信息的选择标准以及设计决策的制定标准；③多目标优化：测试案例通过性能建模生成指标，并通过多目标计算实验得出原理，从中我们可以得知如何改进该设计。本文总结了基于多学科设计优化（MDO）工具的城市设计方案和基础设施系统建模方案，并描述了随后的实施步骤。

关键词：地理设计城市设计城市基础设施能源表现迭代过程多目标优化

HTML PDF 收藏

Remediation of arsenic contaminated soil by sulfidated zero-valent iron

《环境科学与工程前沿（英文）》 2021年第15卷第5期 doi: 10.1007/s11783-020-1377-z

摘要：

• Sulfidation significantly enhanced As(V) immobilization in soil by zerovalent iron.

关键词： Soil As(V) Sulfidation Zero-valent iron Magnetic separation

HTML PDF 收藏

Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

《机械工程前沿（英文）》 2018年第13卷第1期页码 17-24 doi: 10.1007/s11465-018-0480-3

摘要：

Shaft part rolling is an efficient and green near-net shaping technology offering many advantages, including high production efficiency, high material utilization rate, high product quality, and excellent production environment. In this paper, the features of shaft part rolling are introduced along with the working principles of two main shaft part rolling technologies, namely, cross wedge rolling (CWR) and skew rolling (SR). In relation to this technology, some R&D achievements gained by the University of Science and Technology Beijing are summarized. Finally, the latest developments in shaft part rolling are presented, including SR steel balls, precise forming of camshaft blank by CWR, SR phosphorous copper balls at room temperature, and CWR hollow axle sleeve. Although the shaft part rolling technology has been widely used in China, it only accounts for about 15% of applicable parts at present. Nevertheless, this technology has broad application prospects.

关键词： cross wedge rolling skew rolling near-net rolling shaft part

HTML PDF 收藏

Special issue: Near-net shaping technology

Dequn LI, Dongming GUO, Qingxue HUANG, Yanchun LOU

《机械工程前沿（英文）》 2018年第13卷第1期页码 1-2 doi: 10.1007/s11465-018-0497-7

HTML PDF 收藏

Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

《机械工程前沿（英文）》 2018年第13卷第1期页码 48-52 doi: 10.1007/s11465-018-0493-y

摘要：

Three types of near-net shape casting aluminum parts were investigated by computed tomography to determine casting defects and evaluate quality. The first, second, and third parts were produced by low-pressure die casting (Al-12Si-0.8Cu-0.5Fe-0.9Mg-0.7Ni-0.2Zn alloy), die casting (A356, Al-7Si-0.3Mg), and semi-solid casting (A356, Al-7Si-0.3Mg), respectively. Unlike die casting (second part), low-pressure die casting (first part) significantly reduced the formation of casting defects (i.e., porosity) due to its smooth filling and solidification under pressure. No significant casting defect was observed in the third part, and this absence of defects indicates that semi-solid casting could produce high-quality near-net shape casting aluminum parts. Moreover, casting defects were mostly distributed along the eutectic grain boundaries. This finding reveals that refinement of eutectic grains is necessary to optimize the distribution of casting defects and reduce their size. This investigation demonstrated that computed tomography is an efficient method to determine casting defects in near-net shape casting aluminum parts.

关键词： near-net shape casting aluminum parts casting defects low pressure die casting die casting semi-solid casting computed tomography

HTML PDF 收藏

Effects of different types of biochar on the properties and reactivity of nano zero-valent iron in soil

《环境科学与工程前沿（英文）》 2021年第15卷第5期 doi: 10.1007/s11783-021-1388-4

摘要：

• Biochar enhanced the mobility and stability of zero-valent iron nanoparticles.

关键词： Nano zero-valent iron Biochar BDE209 Transport Soil

HTML PDF 收藏

Degradation of chlorinated phenols by nanoscale zero-valent iron

CHENG Rong, WANG Jianlong, ZHANG Weixian

《环境科学与工程前沿（英文）》 2008年第2卷第1期页码 103-108 doi: 10.1007/s11783-008-0009-9

摘要： Chlorophenols (CPs), as important contaminants in groundwater, are toxic and difficult to biodegrade. Recently nanoscale zero-valent iron received a great deal of attention because of its excellent performance in treating recalcitrant compounds. In this study, nanoscale zero-valent iron particles were prepared using chemical reduction, and the reductive transformations of three kinds of chlorinated phenols (2-CP, 3-CP, and 4-CP) by nanoscale zero-valent iron under different conditions were investigated. The transformation process of the CPs was shown to be dechlorination first, then cleavage of the benzene ring. The removal efficiency of the CPs varied as follows: 2-CP > 3-CP > 4-CP. The reactivity of CPs was associated with their energy of lowest unoccupied molecular orbit (). With the increase in initial concentrations of CPs, removal efficiency decreased a little. But the quantities of CPs reduced increased evidently. Temperature had influence on not only the removal efficiency, but also the transformation pathway. At higher temperatures, dechlorination occurred prior to benzene ring cleavage. At lower temperatures, however, the oxidation product was formed more easily.

HTML PDF 收藏

Chemisorption solid materials for hydrogen storage near ambient temperature: a review

Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG

《能源前沿（英文）》 2023年第17卷第1期页码 72-101 doi: 10.1007/s11708-022-0835-7

摘要： Solid chemisorption technologies for hydrogen storage, especially high-efficiency hydrogen storage of fuel cells in near ambient temperature zone defined from −20 to 100°C, have a great application potential for realizing the global goal of carbon dioxide emission reduction and vision of carbon neutrality. However, there are several challenges to be solved at near ambient temperature, i.e., unclear hydrogen storage mechanism, low sorption capacity, poor sorption kinetics, and complicated synthetic procedures. In this review, the characteristics and modification methods of chemisorption hydrogen storage materials at near ambient temperature are discussed. The interaction between hydrogen and materials is analyzed, including the microscopic, thermodynamic, and mechanical properties. Based on the classification of hydrogen storage metals, the operation temperature zone and temperature shifting methods are discussed. A series of modification and reprocessing methods are summarized, including preparation, synthesis, simulation, and experimental analysis. Finally, perspectives on advanced solid chemisorption materials promising for efficient and scalable hydrogen storage systems are provided.

关键词： hydrogen storage capacity chemisorption near-ambient-temperature modification methods alloy hydrides

HTML PDF 收藏

Factors influencing near infrared spectroscopy analysis of agro-products: a review

Xiao XU, Lijuan XIE, Yibin YING

《农业科学与工程前沿（英文）》 2019年第6卷第2期页码 105-115 doi: 10.15302/J-FASE-2019255

摘要：

The near infrared (NIR) spectroscopy technique has wide applications in agriculture with the advantages of being nondestructive, sensitive, safe and rapid. However, there are still more than 40 error sources influencing the robustness and accuracy of its calibration and operation. Environmental, sample and instrument factors that influence the analysis are discussed in this review, including temperature, humidity and other factors that introduce uncertainty. Error sources from livestock products, fruit and vegetables, which are the most common objects in the field of NIR analysis, are also emphasized in the second part. In addition, studies utilizing different instruments, spectral pretreatments, variable selection methods, wavelength ranges, detection modes and calibration methods are tabulated to illustrate the complications they introduce and how they influence NIR analysis. It is suggested that large scale of data with abundant varieties can be used to build a more robust calibration model, in order to improve the robustness and accuracy of the NIR analytical model, and overcome problems caused by confining analysis to too many uniform samples.

关键词： agro-product error source influence factor near infrared spectroscopy