Oil disposal

Used oil disposal trends include waste minimisation such as by reclaiming used fluid on site, as well as recycling of mineral oil lubricants instead of disposing by incineration. The recycling effort involves a system where spent mineral oils are collected then shipped to specialty refineries where the materials are distilled, hydrofinished, and re-refined into fresh base stocks. These re-refined materials are virtually identical to virgin feedstocks. 

N. E. Surprenant and co-workers. The Fate of Ha ardous and Nonha ardous Wastes in Used Oil Disposal and Recycling, DOE/BC/10375-6, Department of Energy, Washington, D.C., 1983. 

The environmental aspects of lubricants (Kubo et al., 1999 Waara et al., 2001) often encounter problems such as human health and safety, waste oil disposal, greenhouse effect, and oil resource consumption. The fuel efficiency improvement contributed by engine oil is thus becoming increasingly important in the US and European markets (Hoshino and Nakada, 1995). Following are some ways to improve the fuel efficiency performance of an engine lubricant ... 

Paraffin oil discolours rapidly with prolonged heating. If the oil is dark, replace it with fresh oil. Dispose of the old oil in an appropriate manner (check with laboratory staff). 

In some crude oils, high amounts of insoluble asphaltenes and inorganic solids with high surface charges (chiefly clays) will combine to form a stable solids interface pad. This interface problem is usually accompanied by poor water quality and excessive consumption of emulsion breakers. This type of interface pad is typically removed from a treating vessel by desand-desludging operations to form uneconomically treatable slop oils. Disposal costs of this slop may be high for either the oil producer or refiner. 

Waste oils and used oils are being re-refined either to produce petroleum products or for energy recovery [80, 81]. These measures are decreasing the oil lost to the oceans by poorly used oil disposal practices. The motivation for these actions has come from the increase in value of petroleum and from an increased recognition of the harm done to oceans by large discharges of used oil. 

Disposal of Oil Disposal Well Buried Pipelines Acid Rain... 

There are some special cases for which it is unnecessary to add a lubricant. Magnetic bearings and bearings that are suspended by a pressurized gas have no metal-to-metal contact so that wear and heat buildup are avoided. Several companies sell oil-free vacuum pumps that eliminate the trouble and expense of changing the oil, disposal costs, and contamination of process chambers, which is especially important in the manufacture of semiconductors and liquid crystal crystal displays.40 Plastic gears of nylon or polytetrafluoroethylene are self-lubricating and need no added lubricant. They reduce the noise associated with ma-... 

Used Oil Disposal Options, Management Practices and Potential Liability... 

Emuko. [Toho Chem. Industry] Surfactants complex floating oil disposer for oil and gas industry. 

Previously, municipalities and county boards allowed road spreading without cost to the oil companies (at times, even providing additional gravel). In effect, it had been a cheap paving and dust control method for these jurisdictions. Consequently, oil companies found it to be the least costly method of produced solids and slop oil disposal. However, there is concern with this method that heavy metals may leach into the surrounding groundwater. 

The other major sources of metals in waste lubricants are those resulting from wear or use. The disposal of waste lube oils has been recognized as a potential pollution problem for many years. However, not until 1966 was the first attempt made to bring the problem into focus service stations throughout the United States were surveyed to determine how they disposed of their waste automotive oils. The results of that survey led to a better awareness of the pollution potential of used lubricants and to the eventual formation of an American Petroleum Institute Task Force on Used Oil Disposal. 

Arthur D. Little, Inc., "A Study of Waste Oil Disposal Practices in Massachusetts," A Report to the Commonwealth of Massachusetts, Division of Water Pollution Control, January 1969. 

Booth, G. T., Jr., "The Oil Company s Partner in Proper Service Station Waste Oil Disposal—the Collector and Rerefiner," Presented at the National Fuels and Lubricants Meeting, September 14-15, 1972, New York, N.Y. 

The disadvantage involved in using these fresh-oil-lubricated vacuum pumps was the provision of fresh-oil logistics and waste oil disposal, which was cumbersome when operating many such vacuum pumps constantly. 

---