The process gas compressor unit of Line 2 in a plant of Zhongtian Hechuang Chemical Co.,Ltd.is driven by a steam turbine.The efcient and stable operation of the steam turbine is critical to ensuring the safe and stable production of the plant.Poor steam quality has caused fouling in the flow passage of the steam turbine,resulting in reduced flow area,increased chamber pressure,failure to maintain rated speed,and a significant drop in work efficiency.Traditional disassembling and descaling require unit shutdown,which is time-consuming,costly,and causes substantial production losses.This paper analyzes the causes of fouling in the K-3001 steam turbine and introduces a successful case of on-line cleaning without shutdown.
废弃矿井逐年增多,煤矿虽然停止生产,但甲烷释放并没完全停止,并通过多种途径释放到大气中,污染环境的同时还具有燃烧爆炸风险,因此设计了一种废弃煤矿煤层气地面抽采及销毁系统.文章首先介绍了系统构成,包括:抽采系统、火炬系统及监测监控系统;其次设计了针对高浓度煤层气抽采的干式罗茨泵+变频电机的可调流量式抽采系统;再者设计了地面火炬燃烧系统,燃烧火焰完全控制在防辐射隔热罩内,最大限度地减少热辐射、噪音对工作人员和周围设备的影响;最后设计了无线传输式监测监控系统.该系统基于现场总线及无线通信等技术,实现远程监测监控抽采系统及燃烧系统运行状态,对异常变化具有自动判识、报警并紧急处置功能,有效保障抽采煤层气安全销毁.
瓦斯发电提效旨在通过改善瓦斯浓度波动和瓦斯含水量实现提高发电站发电量的目的.为保障提效装置安全、稳定及可靠运行开展了监控系统设计,首先开展了监控系统功能设计,确立了PLC+IPC的监控模式,接着开展了硬件选型及软件设计,最后通过现场运行表明:进入发电机组的瓦斯其浓度波动控制在 2%/min以内,相对湿度<80%,且瓦斯中无液态水,发电机组发电效率提高 12%,提效装置运行良好.
The safety of natural gas pipeline passing through chemical storage tanks is very important,and the possible additional risks caused by storage tanks should be analyzed while considering the safety of the pipeline itself.Therefore,this paper focuses on the analysis of corrosion and shock wave risk caused by tank leakage and explosion,and analyzes the problem of oversettling caused by tank weight.Combined with the natural gas pipeline's own attributes,this paper introduces the calculation method of its risk construction parameters and solves the optimization parameters.
With the continuous development of science and technology,more and more industries have begun to use automation technology to strengthen production quality management and improve enterprise economic benefits.The petrochemical industry is no exception,and the use of electrical automation instrumentation equipment is more and more extensive.This paper analyzes the anti-interference measures in the installation of chemical electrical automation instruments,and puts forward some constructive suggestions and measures.
In recent years,China's social economy continues to develop rapidly,the social demand for high-quality materials continues to increase,the petrochemical industry continues to provide new high-tech chemical new material products for social and economic development,further accelerate the development and growth of petrochemical enterprises,the resulting fire risk is also increasing.The traditional fire prevention supervision method has been unable to meet the current fire prevention requirements of petrochemical enterprises.Therefore,this paper analyzes the fire characteristics of petrochemical enterprises and the role of intelligent fire protection in the fire supervision and management of petrochemical enterprises,and puts forward the application strategy of intelligent fire protection in the fire supervision of petrochemical enterprises.
This paper analyzes the common problems and optimization measures of circulating water system in power plant,expounds the optimization characteristics and operation principle of circulating water system in power plant,points out the common problems and causes of circulating water system in some power plants,and puts forward the optimization measures.
With the continuous progress of production technology and the gradual improvement of safety awareness,people-oriented concept has been gradually introduced into chemical safety management,in order to improve the level of safety management of enterprises.To this end,the paper analyzes the problems existing in the daily production safety management of chemical enterprises,such as safety responsibility,organizational structure and technical update,and puts forward specific application strategies under the people-oriented concept,including advocating safety culture,improving the safety quality of employees and improving the chemical safety management system.
Deepening industrial restructuring is the key to high-quality economic development.We not only need to deepen structural transformation,but also need to enrich product types and increase the added value of products.In this case,many new products and new industries were born,such as a new industry in the chemical industry-fine chemical industry.This paper focuses on the development safety of fine chemical industry,with the goal of improving the overall fire safety of the industry,combined with the characteristics of fine chemical production,analyzes the characteristics of fine chemical fire,incentives and rescue countermeasures,and discusses the optimization path of fine chemical fire rescue.
Chemical fire is a special disaster of high temperature,high pressure and explosive,which brings great threat to people's life and property safety.This paper introduces the characteristics of chemical fire,summarizes the principle of intelligent fire extinguishing technology,and discusses the problems in perception,diagnosis,control and execution of intelligent fire extinguishing technology.Finally,the optimization measures to solve these problems are put forward.
Due to the high content of corrosive substances such as NaCl in the brine of salt lakes,the pumping pump is prone to salt deposition and corrosion during the salt extraction process in salt lakes.Therefore,how to prevent salt deposition and corrosion of the pump during operation is an important issue that needs to be solved in the current salt lake brine extraction process.Starting from the issues of salt and corrosion prevention in brine transportation equipment,the article on instrument automation in coal chemical enterprises proposes analysis opinions on improving the quality of transportation equipment.
The main purpose of sewage treatment in oil extraction plants is to remove chemicals,particles,impurities and other substances in oil field sewage,reduce the damage and impact on the local environment,and promote the harmonious development of man and nature.Taking Yougou Joint Station of Wuqi Oil Production Plant in Yan'an,Shaanxi Province as an example,this paper analyzes the problems that may be encountered in the sewage treatment process of oil production plant,and puts forward a reasonable and standardized sewage treatment process to strengthen the sewage treatment.
With the widespread use of coiled tubing milling and grinding,sand flushing,and other horizontal well operation technologies,There's stuck drilling incidents occur from time,because the coiled tubing itself can't rotate,and mechanical properties are limited,resulting in insufficient unstuck capacity,be faced with the accumulation of debris due to the wellbore,especially the reservoir pressure is low resulting in the cycle can't be established,once the stuck drilling is very likely to cause extreme accidents,and eventually can only cut the coiled tubing,and a workover rig is required for subsequent treatment,This's a major challenge to the promotion of coiled tubing operations in the industry.This paper focuses on how the coiled tubing operator combined with a sealed overshot and radial cutting torch(RCT)technology can quickly solve the problem of coiled tubing stuck drilling and describes some supporting processing technologies,which have important significance for the processing of similar coiled tubing stuck drilling,with the mature application of related processes,it's expected to form a standardized processing scheme for similar problems in the industry.
In the process of grape growth,in order to ensure sufficient yield and high quality,pesticides such as growth regulators and insecticides are often used.If these chemical substances exceed the standard limit and remain on the grapes,it will directly threaten the health of the eaters.Therefore,for the production and sale of fresh grapes,relevant departments need to design a highly accurate rapid detection technology to effectively separate and detect multiple pesticide residues.This technology will effectively improve the level of food safety management,detect pollution problems promptly,and take necessary measures to prevent contaminated products from entering the market,thereby ensuring food hygiene and safety and maintaining food safety standards in the industry.
Petroleum geological exploration is different from conventional geological exploration,the exploration work should take into account the exploration and analysis of oil and gas resources.Therefore,it is necessary to combine related professional technology in the actual exploration.Based on this,this paper discusses the application of seismic exploration technology in petroleum geological exploration and development,hoping to be helpful to the practical application of technology.
Lignin is the only non fossil fuel mineral source in nature and a renewable aromatic polymer,which has the outstanding advantages of comprehensive source,abundant reserves,easy availability of raw materials,and low price,and is one of the sustainable biomass wood adhesives with the most development potential.The bioactivation modification method does not depend on chemical reagents,has the advantages of non-toxic,harmless,and non-environmental pollution,and is considered a future research hotspot.This paper focuses on the basic principles,preparation strategies,selection and culture of fungi(white rot)and enzymes(laccase),preparation process,properties of wood-based panels,future application prospects,and prospects of lignin in wood fiber materials by biological method,aiming to provide new ideas for the research of bio-in-situ activation of lignin to prepare biomass composites.
With the rapid development of China's social economy and the continuous growth of energy demand,liquefied natural gas(LNG)as a clean,efficient,green and safe energy has become one of the important directions of China's energy structure adjustment.At the same time,LNG is also one of China's important energy imports.This paper analyzes the development of LNG storage and transportation equipment in China from the aspects of the type,technical level,market situation and competition pattern,and puts forward the corresponding countermeasures.
With the continuous expansion of the construction scale of domestic long oil and gas pipeline and the establishment of National Oil and gas Pipeline Group Co.,Ltd.,the quality requirements of long pipeline welding are higher and higher,and automatic welding process is the inevitable trend of long pipeline welding process;which has the advantages of good appearance,few welding joints,high welding efficiency and low labor intensity.
The corrosion and protection of metals,especially in the field of thermal power equipment,have always been an important research topics in the engineering technology.With the continuous growth of energy demand and the continuous innovation of technology,the service life and stability of thermal power equipment have become key factors affecting the economic efficiency and reliability of chemical enterprises.Therefore,studying the corrosion and protection of metals in thermal power equipment is of great significance for improving the performance of the equipment and reducing operating costs.This paper will discuss the basic principles of corrosion,the classification and mechanism of metal corrosion,and corrosion and protection technology,in order to provide a reference for research and practice in related fields.
