The effect of spent bleaching earth ageing process on its
2014/5/31Materials and methods Research material obtained from Polish local rapeseed oil refinery was the diatomaceous spent bleaching earth waste (SBE 0), collected directly from filters after the refining of vegetable oils at fat processing plants, and the same waste being stored for 3 years (SBE 3) in two plastic screw top barrels, at a constant temperature of 20 C without aeration and moistening.
2020/8/24The PDA process relies on the greater solubility of the paraffinic and naphthenic (ie essentially the base oil) components versus the contaminated waste material in a stream of propane. The separation of the lubricating oil fraction from used oil is a continuous process and is conducted at ambient temperature when processing used oil.
%FFA is the number of grams of fatty acid per 100ml of oil. There are a range of different fatty acids and it is not practical to determine the proportions of each in a particular oil sample. For this reason, %FFA is expressed as equivalent oleic acid – an "average" fatty acid. i.e. as if all the free fatty acid is oleic acid.
There is no part of the crude oil that ordinarily becomes a waste product. All of it is either transformed into some salable product or consumed in the refinery as fuel. But wastes are generated. Crude oil contains salt which is washed out of the
The transformer oil filtration process is realized by the use of metal meshes, cloth filters, cardboard and bleaching clay. Acid treatment is applied to highly oxidized oils. Alkali treatment is used to remove acids from oil. It is recommended to apply adsorption
For those that want to get rid of all types of clay in their waste oil recycling process, we specifically developed the HERING PHNIX GREEN. It is a natural mineral that has been physically improved to yield a high surface area adsorbent material with similar properties to conventional clay, but without using any chemicals or chemical processes.
treated used engine oil (UEO) and 25%, 35%, 45%and 55%blending of pre-treated UEO (including clay treatment, CT) into fresh diesel 5 . Blending in various proportions and filtration were prepared with the help of WOTEC (waste oil to energy IV.
Abstract A method of refining mineral lubricating oils comprises treating the oil with sulfuric acid, settling and removing the settled sludge, then passing the oil upwardly through a bed of sawdust, and neutralizing the filtered oil.
2020/8/24The use of acid/clay refining processes is limited to the manufacture of some white oils and sulphonates as well as to some regeneration of waste oils. This process has, to a large degree, been replaced by more modern refining methods because it produces large quantities of acid sludge, which is very difficult to dispose of without a negative impact on the environment.
Here, similar to the conventional method, acetic acid is also extracted during the extraction stage from the process water with the aid of a suitable extraction agent (MTBE in most cases). The extraction tower, however, is operated in such a way that a high a concentration as possible of acetic acid is achieved during the extraction-sequence phase with simultaneous fulfilment of the required
