Method of regeneration of flooded oil

 

(57) Abstract:

The invention relates to a method of regeneration flooded engine oils, contaminated mechanical impurities, and can be used for the purification of waste oils for the automotive, machine building and agricultural enterprises. Method of regeneration of flooded oil comprises contacting the oil with an adsorbent on the basis of basalt fiber. The oil is passed through a filter filled with basalt fiber, modified clay or urea, with specific filtration rate of 3.2-10.3 m3·m-2·h-1. The advantages of the present invention is a single-stage process process and the destruction of emulsions stabilized by mechanical impurities. 1 PL.

The invention relates to a method of regeneration flooded engine oils, contaminated mechanical impurities, and can be used for the purification of waste oils for the automotive, machine building and agricultural enterprises.

Rational use of waste oils is of great ecological and economic importance. Known various methods used for Regener the ing the separation, vacuum dehydration and secondary treatment processes, consisting in settling and decanting, dehydration, acid treatment, treatment with activated clay in a vacuum and the addition of additives that improve the properties of the oil.

Removal of large carbonaceous particles, water and solids waste oil assert within days, and then centrifuged for 0.5 h at 7000 rpm. min-1. The oil is then evaporated in a vacuum until the temperature of the beginning of the boil fresh VM-4. Evaporation is carried out at 1.3 to 4 kPa and temperatures 150-180-185-212° C (Aging and scavenging vacuum oil. I. N. Bunei, A. A. Gureev, M. I. Falkovich, I. H. Cascina. Chem. and technology. fuels and oils, No. l. c.24-26, 1990).

Diagram of vacuum cleaning of oil contaminated camphor, water, oxidation products and other impurities provides its evaporation to a temperature of 250° C under vacuum 10-30 mm RT.article subsequent contact with the purification of dry aluminosilicate (I. N. Bunei, A. A. Turaev, M. I., Falkovich, C. T. Solodovnikov. “Regeneration vacuum oil VM-4”, Refining and petrochemicals, 1989, No. 2, S. 19-20).

There is a method of regeneration of waste oil by contacting the oil with silica gel and subsequent separation and the

Known application for the regeneration of oils and natural materials. Transformer oil is purified on a partially spent kislotnoschelerngo the bentonite, and then in the fresh sorbent, dried at 150° C for 3 h, and dried zeolite (Regeneration of waste transformer oils. A. S. Evdokimov, Chan Thanh Ha, M. I. Falkovich, C. T. Solodovnikov. An oil. and petrochemicals, No. 5, S. 16-18, 1989. A. C. 1198109, USSR, 1985).

It is known the use of kaolin to remove acidic impurities, improve color, and reduce the water content. The process is carried out at 60-130° C. To remove trace metals kaolin is used in conjunction with membrane cleaning, which greatly increases the degree of purification for 1 cycle (Aono Ryonei. Hydraul. And pneum. - 1986. - V. 25, N5. - R. 64-68).

Know the use of activated montmorillonite for the regeneration of transformer, industrial and motor oils (Marcin I. I., Ovcharenko F. D., Pistohlkors Century A. //Colloid chem. issues Ecol. Proc. Dokl. uses. Conf., Minsk, may 28-30, 1990. - Minsk. 1990. - S. 134-135).

A known method of purifying used lubricating oils by vacuum distillation with subsequent 2-step treatment of the distillate in the presence of 0.2-20 (0.5 to 16 wt.%) wt.% solid particles materski With 10 M 175/02. Publ. 24.06.93).

Waste oil, heated to 80 to 90° C, regenerate contact cleaning adsorbent - palygorskite under stirring for 1-3 h and then filtered (U.S. Pat. 2058380 Russia, MKI With 10 M 175/02. Publ 20.04.96, BI No. 11).

There is a method of regeneration of waste oils by mixing with anhydrous zinc chloride (3-10 wt.%) and heating under reduced pressure for separation of impurities in the form of vapor and sediment. Oil forming the upper layer is mixed with activated clay and heated under reduced pressure until such time as the oil will not get the desired color (Application No. 2421903 Germany, MKI With 10 M 11/00. Publ. 24.08.78).

For the regeneration of oils and removal of water known method of recovery (U.S. Pat. 2061741 Russia, IPC6WITH 10 M 175/02. No. 94020447/04; Publ. 10.6.96, BI No. 16). Removal of water from oil use particles of adsorbent and heavy filler, and the filler particles larger particles of the adsorbent. The filler used dense particles of polymers or metals. As adsorbents salts of cross-linked polymers of carboxylic acids, possibly with the addition of starch, is able to absorb up to 12 times more water than its own weight. The adsorbent add carboxymethylcellulose, carbon the P>

Proposed as a means of cleaning oil from water is a copolymer of acrylamide with aminoalkylsilane, which have high rate of moisture absorption and swelling degree (Probl. the economic. and to operate. engines EXT. combustion in the agroindustrial complex of the CIS. 1996, No. 8, S. 12-13).

The possibility of applying for dehydration of oils zeolites (Ivanov S. A., Aleksashkin D. A., Purtov N. N (Unity theory., method and practice. prepared. future. spec. /Cheat.Phil.Khabar. in-TA ing. J.-D. transp. Chita. 1992, S. 75-76.); oxides, hydroxides, halides, carbonates, sulfates, phosphates of alkali and alkaline earth metals, and coke, zeolites (U.S. Pat. 2100425 Russia, IPC6WITH 10 M 175/02. No. 95117864/04; Publ. 27.12.97, BI No. 36).

A known method of purification of waste oil by mixing the heated oil (80 to 100° C) with powdered urea (U.S. Pat. No. 2163253 Russia, IPC7With 10 M 175/02; Publ. 20.02.2001, BI No. 5).

These methods of regeneration of waste oils bulky and multistage require significant energy costs.

There is a method of regeneration of oils where as sorbents used bentonite clay (for example, Cherkasy montmorillonite) clay, montmorillonite-palygorskite patterns, what lotay at 95° C for 6 h (A. C. of the USSR №1162869, MKI With 10 M 175/02. No. 3591995/23-04; Publ. 23.06.85, BI No. 23).

Closest to the claimed technical solution is the method of purification of the oil by filtering the oil through the filter material containing the powder Haskanita powder, perlite and basalt fiber (A. C. of the USSR №1011235, MKI 01 J 20/00, 01 D 39/02, publ. 15.04.83, BI No. 14).

However, the proposed solution is not effective for dehydration persistent emulsions water in oil, stable mechanical impurities.

The task of the invention is to increase process efficiency, improve the quality of the recycled oil, forming a stable emulsion of the type oil-in-water.

The technical result is achieved by the fact that the oil is passed through a filter filled with basalt fiber, modified clay or urea, with specific filtration rate of 3.2-10.3 m3·m-2·h-1.

Basalt fiber modify the clay according to the patent No. 2130001. Modification of basalt fiber urea is conducted similarly.

Distinctive features of the proposed technical solutions are used as tx2">The filter is filled with basalt fiber. The oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water is fed into the filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 3.2 m3·m-1·h-1. Regenerated oil contains water in the form of a stable emulsion, no mechanical impurities.

Example 2.

The filter is filled with basalt fiber, modified clay. The oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in a filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 3.2 m3·m-2·h-1. Regenerated oil is transparent, no mechanical impurities.

Example 3.

The filter is filled with basalt fiber, modified urea. The oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in a filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 3.2 m3·m-2·h-1. Regenerated oil is transparent, mechanical impurities otsustetegemise 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in the filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 6.7 m3·m-2·h-1. Regenerated oil is transparent, no mechanical impurities.

Example 5.

The filter is filled with basalt fiber, modified urea. The oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in a filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 6.7 m3·m-2·h-1. Regenerated oil is transparent, no mechanical impurities.

Example 6.

The filter is filled with basalt fiber, modified clay. The oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in a filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate - 8.9 m3·m-2·h-1. Regenerated oil is transparent, no mechanical impurities.

Example 7.

The filter is filled with basalt fiber, modified urea. The oil containing 0.02 wt.% mechanical the emulsion. Specific speed filiali - 8.9 m3·m-2·h-1. Regenerated oil contains traces of water, mechanical impurities are absent.

Example 8.

The filter is filled with basalt fiber, modified clay Oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in a filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 10.3 m3·m-2·h-1. Regenerated oil contains traces of water, mechanical impurities are absent.

Example 9.

The filter is filled with basalt fiber, modified urea. The oil containing 0.02 wt.% mechanical impurities and 3 wt.% emulsified water, served in a filter under pressure. The flow rate of the filter material 3 g 0.5 l of the emulsion. Specific filtration rate is 10.3 m3·m-2·h-1. Regenerated oil contains water in the form of a stable emulsion, no mechanical impurities.

The completeness of the regeneration is performed according to the methods of determining oil quality according to GOST.

The proposed method of regeneration carried out the process at room temperature. Regeneration is carried out in a cylindrical vessel, d=25 mm, h=300 mm; the ratio of the height of the layer of sorbent to the inner diameter of the adsorber is 2.

The dependence of the quality of recovery of oil from basalt fiber modification is presented in the table at the end of the description.

These tables show that the use of basalt fiber, modified clay, is preferable.

The advantages of the proposed method, in comparison with the known, is the single-stage process and the destruction of emulsions stabilized by mechanical impurities.

Thus, the proposed method of recovery of flooded oil helps to remove mechanical impurities and shatter resistant emulsion with a low flow rate of the filter material.

Method of regeneration of flooded oil comprising contacting the oil with an adsorbent on the basis of basalt fiber, characterized in that the oil is passed through a filter filled with basalt fiber, modified clay or urea, with specific filtration rate of 3.2-10.3 m3m-2h-1.



 

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