In recent years, due to improper lubricating oil lubrication and other causes of safety accidents have been uncommon. In recent days in the interview, experts have reminded reporters, enterprises must attach great importance to equipment lubrication, lubricants management into part of business management, formulation and conscientiously implement the operation and maintenance, maintenance system, scientific and timely implementation of lubrication technology applications and management, For equipment safety, stability, long-term operation to provide adequate protection.

Heavy maintenance light lubrication is common

All along, the prevalence of most chemical companies in our country focus on equipment maintenance, while ignoring the phenomenon of equipment lubrication, there is no set up a professional, specialized personnel to the equipment for effective lubrication and maintenance. Some technical managers of different types of equipment lubrication requirements are not well understood in the equipment required for each part of the lubricant specific quality indicators or specifications, dosage, filling the oil cycle, the replacement of the oil cycle, the difference between winter and summer oil, etc. There is a vague understanding.

When designing a pre-manufactured equipment, the designer chooses the lubricant based on his / her own experience and does not consider the specific environment in which the equipment is composed and the equipment is being used. Many enterprises on the maintenance of lubricants there are many irregularities in the place, the lack of full lubrication and lubrication of the training of education. Many people believe that lubrication is to fuel the equipment, what oil is cheap and what oil, do not know due to the improper use of oil may cause adverse consequences.

Lubricant itself carries safety hazards

Shaanxi Weihe Coal Chemical Group Co., Ltd. Zhang Zengwei introduction of engineers, the general state of lubricating oil in the presence of organic compounds have a corrosive effect on steel. There are also chloride ion lubricant additives, a strong reducibility, so austenitic stainless steel easily corroded medium containing chloride ions in the stress corrosion.

He also pointed out that in high-temperature water, containing trace amounts of chloride ion can make common stainless steel stress corrosion cracking, when the medium contains oxygen, it will speed up the stress corrosion cracking process. Sulfide in lubricating oil has strong reducibility, decomposes under high temperature and pressure, and a series of redox reactions take place to form active sulfide. Like urea production, if the feed liquid ammonia or CO2 into the urea high pressure system, will be the lining of the surface of the lining of the nickel oxide and other passive film destroyed, so that stainless steel in the urea solution lost the ability of anti-corrosion, stainless steel Surface produces serious corrosion. Paraffin oil into the urea plant recovery system, process condensate system, but also flash explosion occurred.

Standardize management operations to be institutionalized

In October last year, the State Administration of Work Safety and the Shandong Safety Supervision Bureau conducted a large-scale safety inspection on dangerous chemicals. They found that the lubricants management of the 16 enterprises under inspection was not in place. Wang Haijun, deputy director of the State Administration of Work Safety Supervision, pointed out that to attach great importance to the management of lubricants, and earnestly implement the regular inspection of special equipment, verification system, professional equipment in accordance with the requirements of standard specifications to improve on-site management.

Zhang Zeng-wei said that the management of lubricants can not be taken lightly, for still using oil-sealed equipment, operators should raise the awareness of lubrication safety, strict compliance with operating procedures, strict lubrication maintenance and maintenance requirements, large units should be phased out the oil seal, the use of dry Gas seal, so the process medium is not easy to leak, and the operation clean.

Shanxi Luan coal-based synthetic oil Tian Co., Ltd. Assistant Engineer suggested that enterprises should establish a lubrication for each device data files, the device model, oil change date, oil type, operation, inspection and other information recorded in Case, the equipment rated oil change intervals, lube filtration cycle, regular analysis of lubricants and other technical data collection and documentation, which scientifically and reasonably grasp the lubrication of the equipment, making equipment operators, lubricants, maintenance workers Etc. can make better use of technical information to maintain the normal operation of equipment, and regular lubrication equipment temperature, vibration and viscosity of oil viscosity components for inspection and analysis. After that, according to the test results to determine whether to replace the lubrication of parts or replacement of lubricating oil.

Wu Yixiang, head of the technology department of Jinyimeng Group Co., Ltd., proposed that enterprises should formulate a cycle suitable for the equipment maintenance and lubrication of the enterprise in accordance with the annual, quarterly and monthly frequency respectively to form an effective examination system and regard lubrication management as a very important one The daily work to catch. Lubrication equipment should also use high-performance lubricants, although the price is higher, but the actual use of equipment to reduce the number of maintenance, in the long term safer and more efficient.

Exclusion of spontaneous combustion risk factors

Zhou Weian, former chief engineer of Weifang Shengjian Group of Shandong introduced to the reporter that the most dangerous factor is the spontaneous combustion of the coke deposits of lubricating oil according to the analysis of the cause of the ignition and explosion of the compressor installation. The coke deposits of the lubricating oil not only promote spontaneous ignition of the flammable mixture, but also allow the oil to evaporate from the sediment and continuously form a flammable hydrocarbon mixture. For cylinders lubricated with oil lubricated compressor, to ensure that the cylinder and piston assembly normal friction and wear conditions, to use better thermal stability and lower viscosity lubricant. The normal choice of lubricating oil consumption, can greatly reduce the deposition of carbon deposition.

According to the information, if the consumption of lubricating oil is reduced by half, the oil sediment can be reduced to 1/20 ~ 1/30. In general, the compressor manufacturer cylinder fuel consumption requirements are high, companies can run tests to determine the consumption of lubricating oil.

In order to solve the safety problem of compressor oil, Zhou Zhenxian suggested timely and regular removal of the aged lubricating oil and its decomposition products in the compressed air system and the removal of oil coke deposits. In order to make the compressed air flow can effectively take away the deposits of oil coke, the air flow velocity of each section in the compressor device should be correctly selected. When the compressor runs idle or other modes of displacement are adjusted, The time should not be too long as the amount of fuel supplied at this time will increase relatively sharply, resulting in an increase in the concentration of explosive components in the mixture.