Total Site Hydrogen Integration with fresh hydrogen of multiple quality and waste hydrogen recovery in refineries

This paper proposes a novel method combining Pinch Methodology and waste hydrogen recovery, aiming to minimise fresh hydrogen consumption and waste hydrogen discharge. The method of multiple-level resource Pinch Analysis is extended to the level of Total Site Hydrogen Integration by considering fresh hydrogen sources with various quality. Waste hydrogen after Total Site Integration is further regenerated. The technical feasibility and economy of the various purification approaches are considered, demonstrated with a case study of a refinery hydrogen network in a petrochemical industrial park. The results showed that fresh hydrogen usage and waste hydrogen discharge could be reduced by 21.3% and 67.6%. The hydrogen recovery ratio is 95.2%. It has significant economic benefits and a short payback period for Total Site Hydrogen Integration with waste hydrogen purification. The proposed method facilitates the reuse of waste hydrogen before the purification process that incurs an additional environmental footprint. In line with the Circular Economy principles, hydrogen resource is retained in the system as long as possible before discharge.     

Avoidance of partial load operation at coal-fired power plants by storing nuclear power through power to gas

The need of fast regulation of electricity production leads to a number of inconveniences occurred to the electric generation system and the electric market, especially to the nuclear power. A new concept to control nuclear power production is posed in order to allow the regulation of the electricity sent to the grid. This concept proposes the joint operation of a nuclear power plant, a coal power plant with postcombustion capture and a methanation plant. The cost effectiveness of this technology and its capability to reduce the CO₂ emissions -consumed in the methanation process- are assessed through the design and economic and environmental analysis of a hybrid facility. Mainly due to the increase of the operating hours of the coal-fired power plant, the environmental feasibility of the initial proposal seems to be limited. However, given that benefits are expected in the medium and long-term (2020–2030) for the Power to Gas facility, a future alternative use is proposed. The target of this new alternative configuration will be the storage of CO₂ together with the storage of renewable energy.     

High lithium storage of Co3O4 enabled by integrating hollow and porous carbon scaffolds

The Co₃O₄, as a potential anode of lithium-ion batteries, has gained considerable attention because of high theoretical capacity. However, the Co₃O₄ is suffering from serious structure deterioration and rapid capacity fading due to its bulky volume change during cyclic charge/discharge process. Herein, to stabilize the lithium storage performance of the Co₃O₄ nanoparticles, a characteristic carbon scaffold (HPC) integrating hollow and porous structures has been fabricated by a well-designed method for the first time. The ultrafine Co₃O₄ nanoparticles are cleverly anchored on the HPC (HPC@Co₃O₄) and hence achieve significantly improved electrochemical properties including high capacity, improved reaction kinetics and outstanding cycle stability, showing high capacity of 1084.7 mAh g^-1 after 200 cycles at 200 mA g^-1 as well as 681.4 mAh g^-1 after 300 cycles at 1000 mA g^-1. The HPC@Co₃O₄ therefore shows good promising for application in advanced lithium-ion battery anodes. The results of the systematically material and electrochemical characterizations indicate that the synergistic effects of ultrafine Co₃O₄ nanoparticles and well-designed HPC scaffolds are responsible for the outstand performance of the HPC@Co₃O₄ anode. Moreover, this work can enrich the understanding and development of stable and high-performance metal oxide-based lithium-ion battery anodes for advanced lithium storage.     

Assessing the Potential of Cross-border regional innovation Systems:A case study of the Hong Kong -Shenzhen region

While technological transformations have redrawn the boundaries of regional innovation systems, the effect of such transformations on the development of cross-border regional innovation systems (CBRISs) – defined here as the innovation system spanning neighboring territories belonging to different nation-states – has not been well understood. The Hong Kong-Shenzhen region presents a unique opportunity to study the potential of CBRISs, as Hong Kong and Shenzhen are adjacent to each other though there is a border between them and the two cities have their own political and legal systems under the “one country, two systems” arrangement. In this research, we examine the development of the Hong Kong-Shenzhen region by focusing on cognitive proximity, innovation actors, collaboration, and global connectivity through an analysis of patent and publication data for the 2001–2015 period. Our findings point to a good potential given the growing convergence in scientific research among the two cities, steadily increasing collaboration output, and a complementarity among innovation actors. However, compared with other cross-border regions, the technological linkages between Hong Kong and Shenzhen remain limited.     

矿山资源环境一体化思想框架及其应用研究

矿山资源和矿山环境是同一事物的两个侧面。矿山资源是矿山环境的组成部分,是有经济价值的环境;矿山资源的开发过程同时也是环境的改变过程,由矿山资源开发而引起的环境问题,往往是资源不合理利用的结果;矿山环境污染物(如固体废弃物)存在二次开发或资源化的可能。重点探讨矿山资源环境一体化思想框架,并针对广西刁江流域矿山资源开发过程中出现的资源浪费与严重的环境问题,提出了可持续开发对策。     

煤炭企业信息化建设的思路和实践

论述了煤炭企业信息化的背景及发展趋势，并针对煤炭企业信息化建设进行了深入细致的研究和方案设计.涉及的项目包括河北省井陉矿务局的硬件网络建设和软件系统开发.在硬件网络建设中，主要为该企业建立了一条高速的、覆盖主要部门的网络系统.软件系统部分采用J2EE架构，利用EAI（Enterprise Application Integration）技术构建了一个企业综合应用平台，该平台集成了目前该企业主要的应用系统，并且具有良好的扩展性.     

“五环归一”系统工程管理模式在紫金山金铜矿等矿山开发中的创新和实践

我国的基本金属矿产资源富矿少、贫矿多，总体禀赋及开发条件比较差。“五环归一”工程管理模式以经济地质理论为基础，统筹地、采、选、冶及环保5个环节技术与流程，归结于经济和社会效益最大化；通过技术和管理系统创新，大幅度降低了投资和成本；在紫金山金铜矿及诸多矿山开发过程中发挥了重要作用，使低品位资源取得了高效益。该工程管理模式对我国众多低品位难处理矿产资源的经济有效开发具有重要指导意义。     

浅淡矿山企业ISO14001环境管理体系的建立

以栖霞山锌阳矿业有限公司为例，就矿山企业建立ISO14001环境管理体系必要必性和可行性进行了探讨，并针对矿山的特点提出建立环境管理体系的基本思路和目标。     

水电资源丰富地区加快煤电一体化项目建设的必要性研究

本文以云南省为例,从保证电力供应、推动电力外送和促进地方经济发展等方面,讨论了在水电资源丰富的地区加快煤电一体化项目建设的必要性和重要意义。     

湖北大学图书馆创作构思

在湖北大学图书馆创作中,注意了功能性与前沿性的并重,传统文化与现代技术的相融,既体现了现代图书馆理念和个性,又使之具有较强的文化气息和时代特征,进行一次理性与感性的整合。