As green fuel for the aviation industry, aviation biofuel is of great significance for promoting the aviation industry to achieve carbon emission reduction and sustainable development goals because of its low-carbon environmental protection characteristics. However, in the process of development, aviation biofuel faces many challenges such as unstable raw material supply, complex production process, and difficulty in safety and environmental protection supervision. This paper deeply analyzes the problems existing in the field of safety and environmental protection of aviation biofuel. It puts forward corresponding countermeasures from the aspects of strengthening raw material management, optimizing production technology, strengthening quality supervision, ensuring use safety and increasing policy support. The aim is to provide useful reference for the safety and environmental protection development of aviation biofuel and promote its wide application in the aviation industry.

As a type of offshore oil and gas resource development and extraction equipment, self-elevating drilling platforms play a crucial role in China's offshore petroleum industry. In recent years, with the continuous deepening of offshore oil development, the application of self-elevating drilling platforms has become increasingly widespread, and the corresponding equipment maintenance issues have become increasingly prominent. The quality and efficiency of equipment maintenance directly affect the safe production and oil and gas extraction benefits of the platforms. Analyzes the current maintenance status of self-elevating drilling platform equipment, identifies existing problems and then proposes equipment maintenance strategies applicable to self-elevating drilling platforms in China. This improves the management level of equipment maintenance and ensures the safe and stable operation of drilling platforms.

Steam flooding is a new method for the subsequent development of ultra heavy oil blocks. With the gradual extension of the conversion time, new changes occur in the single well fluid volume, temperature, water content, and associated gas components. This seriously affects the effectiveness of steam flooding development. In order to further improve the development efficiency of steam flooding, a suitable on-site management method for steam flooding oil wells was explored through timely parameter adjustment, optimization of pump depth and type, and reduction of associated gas impact based on encrypted data acquisition. After the implementation of this measure on site, the effect of increasing oil production is significant; and the stability of the accompanying gas system effectively ensures the effects of steam flooding development.

With the continuous innovation of science and technology, the rapid development of society and the growing expansion of human living areas, the production and operation equipment in various industries are constantly showing a trend of complexity and large-scale development. Because of the increasing vulnerability of complex systems, more and more factors can lead to accidents and the increasing probability of accidents, which aggravates the risk of catastrophic disasters out of control. The trend of large-scale installations or projects in petrochemical enterprises and the concentration of population around the enterprises is becoming more and more obvious. Therefore, once an accident occurs, the consequences of the accident become more serious. It is an important means to curb the occurrence of serious accidents by adopting the systematic dual prevention mechanism of risk classification and control and hidden danger investigation, thus turning the traditional accident prevention into the dual prevention mechanism based on the system. This is of great significance for the effective control and management of risks in the petrochemical industry.

The implementation of the Interim Measures for the Acceptance of Environmental Protection upon Completion of Construction Projects has shifted the primary responsibility for environmental protection acceptance to construction entities. In the absence of endorsement from ecological and environmental authorities, the legal obligations borne by construction entities have significantly increased. Under this new framework, construction entities now face multifaceted challenges including ensuring compliance of environmental protection facilities, maintaining transparency in information disclosure, and standardizing acceptance procedures. Systematically identifies the key issues in the self-administered environmental protection acceptance process for completed construction projects and proposes targeted optimization strategies. The findings aim to provide practical guidance for construction entities to enhance the quality of environmental acceptance procedures and mitigate legal risks.

In the context of the new era, the rapid development of offshore oil extraction technology has further improved the safety standards of offshore operation platforms. The inspection work in petrochemical scenes has always been high-risk. It requires strong professional skills of inspection personnel and it is accompanied by many safety threats as well. The multi-layered and complex environment of offshore platforms places higher demands on the mobility of inspection robots. To address this challenge, this paper designs a quadruped robot for explosion-proof inspection of offshore platforms which mainly includes the basic structure of robots and explosion-proof treatment.

Based on the analysis of the frequent alarm problem of carbon monoxide alarms in the attached house of the analysis house, it is finally confirmed that the slight leakage interference of hydrogen gas causes the alarm of carbon monoxide alarms. Meanwhile, it also reminds us that the main disadvantage of electrochemical sensors is interference. Sensors will respond to multiple gases simultaneously. This requires us to pay attention to which gases may be present in the environment when selecting the type. The selection of sensors should be targeted to overcome interference from special gases by use of special effect sensors in order to avoid false alarms and improve on-site safety assurance.

Oil field separator is a key facility to realize efficient three-phase separation of oil field produced liquid. However, due to the complexity of crude oil composition, there is an inevitable problem of corrosion inside the separator. Therefore, based on the internal environmental characteristics and corrosion status of the oil field separator, the corrosion behavior of different parts of the separator is determined by corrosion rate, corrosion morphology and open circuit potential. The results show that in the aqueous and oil-phase environment, the metal mainly exhibits the characteristics of comprehensive corrosion with a few local corrosion points, while in the sedimentary phase environment, the metal exhibits the characteristics of pitting corrosion and the corrosion degree accelerates with time.

The storage and transportation system of a company has several cold vacuum residuum pumps in which the medium is of high viscosity and high solid content, and it is difficult to increase the upper and outer flushing system. So the service life of the vacuum residuum pump machine seal is generally short. Through analyzing and testing a variety of optimization schemes, it is finally determined to change the original single mechanical seal into double dry gas seal. The practical application results show that the technology can solve the problem of frequent leakage of the mechanical seal of vacuum residuum pump effectively.

This paper mainly studies how to select grounding materials under the premise of safety, environmental protection and energy conservation. It is found that the selection of grounding materials with excellent electrical conductivity, corrosion resistance and environmental protection can not only reduce the grounding resistance effectively, improve the reliability of the lightning protection grounding system, but also reduce environmental pollution. In addition, optimizing the selection of grounding materials can reduce energy consumption, improve the overall energy efficiency of petrochemical enterprises, and provide strong support for the construction of the ESG system of enterprises.

In order to improve the capability of emergency response and risk prevention and control in the storage tank area of the station yard, the domino effect propagation path under different accident types was determined by comparing the extension vector and failure threshold. The probability of domino effect at different levels was extracted by using the Bayesian network and introducing auxiliary nodes, and the case analysis was completed by taking the storage tank area of a station yard as the research object. The results show that the propagation path of domino effect is the widest when the fire occurs in the storage tank located at the corner of the tank farm and in the upwind direction. When the storage tank located in the middle of the tank farm explodes, the tanks are more dangerous in the event of an explosion, as the overpressure hazard is more widespread. The results can provide a theoretical basis for the formulation of disaster prevention and reduction measures.

Since February 2020, the dilution steam production system of the ethylene plant in SINOPEC-SK (Wuhan) Petrochemical Company LTD. has experienced a decrease of dilution steam. This paper analyzes the reasons and puts forward the countermeasures. The decrease of dilution steam production is mainly caused by quenching water emulsification and internal leakage of dilution steam generator for quenching oil. By using the new demulsifier and modifying the dilution steam generator, heat exchange efficiency of heat exchangers was improved and dilution steam output was increased. The amount of medium pressure steam from external make-up was reduced.

In order to improve the safe operation and management of storage tanks, 183 typical failure cases of storage tanks at home and abroad were analyzed. Aiming at the problems of fire and explosion accidents of storage tanks and based on the case collection and the on-site production characteristics of the operation area, the fault tree analysis and EFFECTS analysis were respectively carried out for qualitative and quantitative analysis. The results show that: under the given parameters, the damage range of fire thermal radiation increases with the increase of the leakage aperture and the environmental wind speed, while the damage range of the overpressure shock wave is proportional to the leakage aperture and inversely proportional to the environmental wind speed. Under the same wind speed, the safe distance of the overpressure shock wave caused by a leakage aperture of 75mm is about 2.6 times larger than that caused by a leakage aperture of 25mm; the thermal radiation death radius of a leakage aperture of 75mm is 1.2 times that of a leakage aperture of 25mm. The most important factor affecting the fire and explosion of storage tanks is the leakage aperture.

The reforming hydrogen purification unit of a certain petrochemical company adopts pressure swing adsorption (PSA) technology to purify hydrogen gas. As the adsorbent usage time prolongs, the hydrogen content in the desorbed gas gradually increases, causing the compressor to surge and the desorbed gas to be intermittently discharged into the flare. Through optimizing the control scheme for desorption gas, the problem of large fluctuations in suction pressure has been solved, the environmental risks of torch emissions have been eliminated, and the steam consumption of the device has been reduced.

In order to meet the requirements of Discharge Standard of Water Pollutants in the Yellow River Basin of Henan Province (DB41/2087-2021), the sewage treatment plant of Luoyang Branch needs to be upgraded. It is especially difficult to carry out biochemical treatment of wastewater discharged from the first and second catalytic cracking units during the flue gas desulfurization and denitrification processes?? and neutralized water from the desalting station and so on due to the high salt content, high nitrogen and chlorine content in such kind of wastewater. ?Achieving stable compliance with the new standard for wastewater poses significant challenges?. In this paper, aiming at the characteristics of water quality and quantity of difficult-to-treat high-salt nitrogen wastewater such as the aforementioned wastewater, a series of optimization and upgrading measures were implemented in 2022 based on the original process flow, achieving a successful first-time startup of the revamped facilities and ensuring stable compliance of effluent discharge with the new local standards.

A sulfur recovery unit has been shut down for maintenance. This paper provides an in-depth analysis of the key steps and technical improvement and environmental protection management in the shutdown process. It discusses in detail the main challenges in the shutdown process including the delay of system sulfur blowing, insufficient passivation depth of the ammonia reactor, and excessive steaming tower time. Aiming at these problems, the paper proposes such solutions as optimizing the passivation operation of the hydrogenation reactor, upgrading the steam tower process and improving the cleaning efficiency of the liquid sulfur pool. Through technological upgrading and management optimization, the green shutdown of the sulfur recovery unit will develop in a more environmentally friendly and efficient direction to promote the sustainable development of enterprise.

Activated carbon (AC), known for its large specific surface area and well-developed internal channels, is widely used in odor removal, smoke gas purification and water purification. However, its hydrophilicity can lead to rapid adsorption saturation, impeding organic adsorption and shortening its lifespan. In this study, super hydrophobic AC was prepared through surface roughening pre-treatment and propyl trimethoxysilane grafting, and applied in the M-003 adsorption tank of Yangzi Petrochemical Olefin Plant. The results showed that the super hydrophobic AC significantly outperformed the original AC in adsorbing VOCS from the plant's wastewater and exhaust gases. Additionally, the use of super hydrophobic adsorbents can reduce operational costs, meet environmental emission standards, enhance the company's environmental image and save environmental investment costs with an operational cost savings rate exceeding 32%. This demonstrates the dual economic and environmental benefits of super hydrophobic adsorbents.