宝钢高炉操业技术的进步

系统总结了宝钢高炉投产20年来,宝钢高炉工作者立足于高起点的工艺设备,着眼于高效率的技术创新, 不断优化操作参数,从而在操业方面所取得的巨大技术进步。重点阐述了取得这些进步的经验和技术措施,并指出了宝钢高炉操业今后需要重点突破的技术难点。

勤俭操业垂范带兵──记东丰县水利局水泥制品厂厂长李贵财

勤俭操业垂范带兵──记东丰县水利局水泥制品厂厂长李贵财秦明元东丰县水利水泥制品厂的前身是一个年年亏损的局办家属厂。在改革开放的大潮中，这个厂每年都迈上一个新台阶。１９９３年产值４１万元，１９９４年产值８４万元，利税１１万元，１９９５年产值１２３万元，...

湛江钢铁1号高炉生产操业实践

湛江钢铁1号高炉自2015年9月投产后,始终坚持"精料"管理,通过优化上下部调剂、制定合理的热制度、提高炉温调剂水平以维护操作炉型的稳定,保持长周期生产稳定顺行,实现了产能逐年提升,于2018年达到设计产量412万吨并超产。进入生产稳定期后,经过各方努力,取得了较好的技术经济指标,煤比在175kg/t以上。在生产过程中,探索了入炉锌负荷偏高对高炉的影响,认为锌负荷不应大于0.18kg/t,否则炉墙渣皮容易脱落,导致操作炉型稳定性下降,影响高炉顺行和铁水质量。

基于炉体调查的宝钢3号高炉长寿经验

宝钢3号高炉停炉以后,对高炉的炉体侵蚀情况进行了系统的调查,结合调查结果,重点从高炉长寿设计、不同炉役时期的高炉操作和长寿维护等三个方面,阐述了3号高炉的长寿经验。认为3号高炉能够取得一代炉役寿命19年、单位炉容产铁量1.57万t/m^3的长寿业绩,一是高炉长寿设计,为长寿奠定了基础;二是高炉操作上保持长期的炉况稳定顺行,为长寿提供了重要保障;三是炉役后期加强高炉的长寿维护,为长寿起到了关键性作用。

黄炎培职业教育思想之特点

1914年,黄炎培出于教育救国之理想,在我国首倡职业教育,他的职业教育思想有以下显著特点:反对与社会生活脱节的旧教育,主张教育与生活联系,教育就是为了生活。要把教学内容与实际生活沟通起来,教学生掌握日常生活知识与技能,达到“扩大知识,操业日精,生计自裕”的目的。“使无业者有业,有业者乐业”,进而做到“敬业乐群”、“裕国利民”。反对旧教育轻视劳动服务,学习不能致用,主张教育与劳动结合,注重培养学生的生产技能,提倡“做工自养”,“尊重劳动”,要求学生、教师都要参加劳动,学得谋生本领,为社会多作贡献。反对旧教育将劳心者与劳力者分开的理论,主张学与用结合。

Process optimization of an industrial acetic acid dehydration progress via heterogeneous azeotropic distillation

The simulated process model of the HAc dehydration process under actual overloaded condition was conducted by amending the model of standard condition in our previous work using the process data collected from actual production. Based on the actual process model, the operation optimization analysis of each plant(HAc dehydration column, decanter and NPA recycle column) was conducted using Residue Curve Maps(RCMs),sensitivity analysis and software optimization module. Based on the optimized parameters, the influence of feed impurity MA and the temperature of decanter on the separating effect and energy consumption of the whole process were analyzed. Then the whole process operation optimizing strategy was proposed with the objective that the total reboiler duty Q Total of C-1 and C-3 reaches the minimum value, keeping C-1 and C-3 at their optimized separation parameters obtained above, connecting all the broken recycle and connection streams, and using the temperature of D-1 as operation variable. The optimization result shows that the total reboiler duty Q Total of the whole process can reach the minimum value of 128.32 × 10~6 k J·h^(-1) when the temperature of decanter is 352.35 K, and it can save 5.94 × 10~6 k J·h^(-1), about 2.56 t·h^(-1) low-pressure saturated vapor.

Consequence Identification for Maloperation in Batch Process

Batch processes are important in chemical industry,in which operators usually play a major role and hazards may arise by their inadvertent acts.In this paper,based on hazard and operability study and concept of qualitative simulation,an automatic method for adverse consequence identification for potential maloperation is proposed.The qualitative model for production process is expressed by a novel directed graph.Possible operation deviations from normal operating procedure are identified systematically by using a group of guidewords.The proposed algorithm is used for qualitative simulation of batch processes to identify the effects of maloperations.The method is illustrated with a simple batch process and a batch reaction process.The results show that batch processes can be simulated qualitatively and hazards can be identified for operating procedures including maloperations.After analysis for possible plant maloperations,some measures can be taken to avoid maloperations or reduce losses resulted from maloperations.

Development and Application of Hydrocracking Catalysts RHC-1/RHC-5 for Maximizing High Quality Chemical Raw Materials Yield

To adapt to the change in the demand of the oil refining market,two hydrocracking catalysts,RHC-1 and RHC-5,were developed to improve the quality of tail oil.The catalysts were designed based on the theory of selective ring-opening.By selecting more acidic molecular sieves,the problem of poor selectivity of conventional materials can be solved to properly match up to the hydrogenation performance of catalysts.Compared with the performance of previous catalysts,the quality of the tail oil achieved by the said catalysts is better,and the BMCI is reduced by 1—2 units.In the long cycle operation of the petroleum industry,the good quality of the tail oil has been verified and the adaptability of the process conditions is good.When the RHC-1 catalyst is used to process heavy feed under medium pressure,a BMCI value of about12 can be obtained along with a nearly 60%yield of tail oil.The total yield of chemical raw material(steaming cracking feed+catalytic reforming feed)can exceed 80%,and the hydrogen consumption has dropped by nearly 50%as compared to the conventional hydrocracking conversion rate.When processing a mixed CGO and VGO feed with the full conversion mode under a hydrogen pressure of 13.0 MPa,the RHC-5 catalyst can yield about 68.4%of heavy naphtha with a potential aromatic content of up to 50.6,while the total yield of chemical raw materials can reach more than 98%.The results of industrial application of these catalysts show that more than 30%of high quality tail oil can be obtained via processing of inferior quality feed,and its BMCI value can reach 10.7.The total yield of chemical raw materials can reach more than65%.The industrial operation process has implemented two operating cycles totaling 8 years.

Pendulation reduction on ship-mounted container crane via T-S fuzzy model

Ship-mounted container cranes are challenging industrial applications of nonlinear pendulum-like systems with oscillating disturbance which can cause them unstable.Since wave-induced ship motion causes the hoisted container to swing during the transfer operation,the swing motion may be dangerously large and the operation must be stopped.In order to reduce payload pendulation of ship-mounted crane,nonlinear dynamics of ship-mounted crane is derived and a control method using T-S fuzzy model is proposed.Simulation results are given to illustrate the validity of the proposed design method and pendulation of ship-mounted crane is reduced significantly.

Simulation and animation model to boost mining efficiency and enviro-friendly in multi-pit operations

A discrete-event system simulation and animation program was developed to enhance the efficiency of a truck-excavator operation and reduce the environmental impact of haulage in an open-cut coal mine with multiple-pit operations. In any mine, a key objective is to have sufficient equipment for production and not to have excess to where it becomes counterproductive. Due to the advent of responsible mining,environmental regulations, and eco-friendly practices, these factors must also be considered in the analysis. Simulation studies can be financially advantageous for both the optimization of existing mine operations and new development phases in a mine. This study is a new approach to use discrete-event system simulation for mine systems, in order to investigate and possibly reduce environmental impact considering mining haulage performance and production target. A hypothetical layout of a surface coal mine with two pit operations was used for the simulation and animation model. The simulation model includes the animation of the operation. Animation is helpful to enhance the benefit of a mine simulation model. GPSS/Hòand Proof Professionalòwere the software used for the investigation.

Study on Industrial Application of Hydrogen Sulfide Removal by Wet Oxidation Method with High Gravity Technology

The removal of hydrogen sulfide from gas plays an important role in rational utilization of resources and environ- mental protection. In this paper, the process of hydrogen sulfide removal by wet oxidation method in a rotating packed bed was investigated in a scale for treating 10 000 Nm3/h of gas. On the basis of studying the influence of the species and con- centration of alkali source, the liquid/gas volume ratio, the high gravity factor, and the hydrogen sulfide content in feed gas on the desulfurization effect, the suitable technological conditions were obtained. The hydrogen sulfide removal efficiency could reach 98.0% under these conditions. The results of continuous operation of process facilities showed that the high gravity method has many merits including higher desulfurization rate, good stability in operation, lower liquid/gas volume ratio, greater operation elasticity, and apparent energy saving effects.

P-Matrices for the Action of Steenrod Power Operations on Polynomial Algebra

In this study, particular matrices which is called P-matrices were defined for the action of the Steenrod powers on the polynomial algebra and it was shown that they can be used to calculate the action of Steenrod powers on product of two generators. Finally an algorithm was given to obtain these matrices.

Loss of preferred habitat and pollen limitation threatens reproduction in a rare mountain Paeonia delavayi

Paeonia delavayi is a wild tree peony species endemic to high-altitude regions in southwestern China.Recent agricultural land expansion,however,not only causes its dwindling population size,but also poses a severe threat to its long-term persistence.Since our knowledge of the reproductive biology of P.delavayi is very limited,and some management misconceptions have further exacerbated the already worrisome situation,the aim of the present study is to provide some scientific evidence regarding habitat preference and breeding system of P.delavayi,and to help correct some management misconceptions.Specifically,morphological traits of P.delavayi populations growing in two different habitats(i.e.,the open area versus forest understory),including basal stem diameter,plant height and flower numbers per plant,were measured and compared with each other.A range of floral manipulation experiments was further conducted to study the extent of self-compatibility and pollen limitation.The results showed that P.delavayi preferred the open habitat over forest understory as it generally grew bigger with thickerstems,and produced a higher number of flowers in the former habitat.Therefore,the open habitat should receive immediate priority for conservation action instead of being converted to agricultural land;also,P.delavayi is pollen limited,as evidenced by the fact that experimental flowers receiving supplemental non-self pollen generally displayed elevated seed production than flowers subjected to other treatments(e.g.,non-supplemental self pollen,non-supplemental non-self pollen and supplemental self pollen),which is consistent with reported observations that alpine plants are more likely to be pollen-limited than lowland plants.We suggest that human intervention might be necessary to guarantee the long-term persistence of P.delavayi as harsh alpine environment,intense competition for pollinators and different anthropogenic perturbations co-limit its reproductive success.

Impact of Korean Cultural Industry Development and Mode of Operation on the Chinese Cultural Industry Development

In the 21st century, the South Korean government is to develop its own cultural industries, and it has achieved great results. Since the administration of President Chun Doo-hwan, it started the Korean government for the development of cultural industry that has formulated a series of policies, laws and regulations, which is the development of Korean culture industry that has played a positive role in promoting. By analyzing the current development of cultural industries in Korea, Korean culture industry can be seen with the following characteristics in the development process, ie government-led industrial policy and cultural economic and non-economic nature of double and capital, talent and technology for the development of cultural industries powered. Successful experience in development and operation of Korean culture of industry development has an important enlightenment on China＇ s cultural industry.

Research on the Innovation Development Strategy of Logistics Enterprises under the New Norma Condition of Economy

Under the new normal economy, the scale of logistics in China has continued to expand, and the logistics operating environment has also been significantly improved, but there are still some development difficulties. On the basis of analyzing the characteristics and predicaments of logistics development, this article points out the opportunities for development, and puts forward that China＇s logistics companies should adapt to changes in the economic environment, take the initiative to carry out technological innovation, model innovation and cultural innovation, and oromote the healthy and sustainable develonment oflogistics enterprises.

Modeling and controlling of a flexible hydraulic manipulator

A mathematical model was developed combining the dynamics of an Euler-Bernoulli beam, described by the assumed-mode method and hydraulic circuit dynamics. Only one matrix, termed drive Jacobian, was needed in the modeling of interaction between hydraulic circuit and flexible manipulator mechanism. Furthermore, a new robust controller based on mentioned above dynamic model was also considered to regulate both flexural vibrations and rigid body motion. The proposed controller combined sliding mode and backstepping techniques to deal with the nonlinear system with uncertainties. The sliding mode control was used to achieve an asymptotic joint angle and vibration regulation by providing a virtual force while the backstepping technique was used to regulate the spool position of a hydraulic valve to provide the required control force. Simulation results are presented to show the stabilizing effect and robustness of this control strategy.

Innovation and Decision-making Management Key Manipulation

This thesis focuses on corporate decision-making and innovation as a process of the system as a whole. The innovative nature of the activities is to change the existing state of technology or management, and that re-combination of factors of production or knowledge base of the organization. Decision-making and innovation is a concentrated expression of the entrepreneurial ability and achievements. Proposed an optimized model of decision-making and innovation, and for the first time put forward the concept of ＂decision-making innovation manipulation critical platform＂ and manipulation instructions, provide a guiding framework for corporate decision-making innovation and capacity building, and has a certain practical significance.

Scoping biology-inspired chemical engineering

Biology is a rich source of great ideas that can inspire us to find successful ways to solve the challenging problems in engineering practices including those in the chemical industry. Bio-inspired chemical engineering(Bio Ch E)may be recognized as a significant branch of chemical engineering. It may consist of, but not limited to, the following three aspects: 1) Chemical engineering principles and unit operations in biological systems; 2) Process engineering principles for producing existing or developing new chemical products through living ‘devices';and 3) Chemical engineering processes and equipment that are designed and constructed through mimicking(does not have to reproduce one hundred percent) the biological systems including their physical–chemical and mechanical structures to deliver uniquely beneficial performances. This may also include the bio-inspired sensors for process monitoring. In this paper, the above aspects are defined and discussed which establishes the scope of BioChE.

Innovation and Decision-making Management Key Manipulation

This thesis focuses on corporate decision-making and innovation as a process of the system as a whole. The innovative nature of the activities is to change the existing state of technology or management, and that re-combination of factors of production or knowledge base of the organization. Decision-making and innovation is a concentrated expression of the entrepreneurial ability and achievements. Proposed an optimized model of decision-making and innovation, and for the first time put forward the concept of ＂decision-making innovation manipulation critical platform＂ and manipulation instructions, provide a guiding framework for corporate decision-making innovation and capacity building, and has a certain practical significance.

Business Operation of Coal Supply and Electric Power Enterprises

In recent years, the prices of primary energy especially coal continue to increase rapidly. This results in a substantial decline of profits and more operating difficulties in the downstream electric enterprises. The listed companies in both coal supply and power industries have quality assets and are the representatives of these industries. Through the analysis of the financial and operational status of the listed coal supply and power companies since 2007, the reasons for the business development difficulties in the electric power industry were discussed. Recommendations were provided including improving the coal pricing system, increasing the degree of business integration of the coal and electric power industries, and adjusting energy structure.