How emulgirovanija oil with dispersed water phase

 

(57) Abstract:

The invention relates to the dehydration of petroleum products, representing an emulsion type water in oil". The method consists in the destruction of the emulsion with the active high-molecular compounds. In the oil add solid insoluble compounds hemicelluloses and lignin, followed by stirring and settling of the mixture. In particular, in the oil add sawdust. In addition, the oil can optionally add the reagent on the basis of natural products containing 50-75% polysaccharides and 7-20% protein, which collects the oil phase into a single unit, pop-up. The technical result is to improve the economic performance of the process. 2 C.p. f-crystals, 2 tab.

The invention relates to the dehydration of petroleum products, representing an emulsion type water in oil" for their subsequent practical use.

Existing methods of destruction emulsions water in oil" is that the system add liquid surface-active components, soluble in oily environments. The only difference in the type of the added components. The patent literature on the subject p is ulsio. Emulgirovannie assumes the traditional way of dissolving these components in the oil phase.

Known methods of emulgirovanija using liquid oil-soluble demulsifiers and filtering devices that contribute to the retention and separation of dispersed particles of water. For example, for sludge dewatering is applied coagulant with a special filter conveyor [Patent JP 6053202 4, CL 01 D 33/04, 1997] or sheet of fibrous material [Patent JP 6067445 4, CL 01 D 17/04, 1997].

The disadvantage of this method is the use of special technologies emulgirovanija with filter systems that require continuous updating, particularly when transmitting large quantities of oil.

The closest analogue is the way emulgirovanija with dissolution dispersion in oil environment, the active high-molecular compounds, contributing to the consolidation of water droplets with subsequent separation of the aqueous phase [Patent US 5505878 And CL 01 D 17/04, 1997].

The disadvantage of this method is the use as coagulants inaccessible, costly specially synthesized liquid oil-soluble surface-active substances.

The proposed method can be used as a demulsifier quite cheap, readily available natural solid high-molecular compounds, which do not require special synthesis, which, after emulgirovanija precipitate. In the absence of a clear phase boundary of the water and oil in some cases, the addition of the reagent on the basis of natural selhozproduktov.

The proposed method is as follows: petroleum products with added reagents are mixed (30-60 min), and then defended (4-24 hours) before final separation of aqueous and oil phases. Modifiedproductkey or adding oil to the reagents. After separation, the mixture is a three-phase system: the organic layer is above the water layer at the bottom, solid phase reagents with an impurity selected from petroleum solids (2-3% wt.) on bottom of the vessel.

Studies have shown that the degree of dehydration depends on the number of added reagents, duration of mixing and settling. For example, sludge from pond UCPN - 4 NGDU Timesapple containing 50-55% wt. water as the dispersed phase, adding reagent (hemicellulose to lignin ratio 5/3 wt.) at the rate of 5-7% wt. from oil, further stirring for 30 minutes and standing for 24 hours is to reduce the water content to 10%. More adding reagents, consisting in re-processing of the emulsion on the same technology and the same proportion of the reagents leads to almost complete dehydration of sludge. After the destruction of the emulsion, the aqueous phase is lowered to the bottom of the vessel, dehydrated sludge is at the top. While there is a clear boundary.

For the above-mentioned sludge use as a demulsifier powder sawdust in the amount of 3% wt. from afterlives water and oil sludge also have a clear border.

In experiments with other sludge, waste oil refineries, the proposed reagents also destroy the disperse system. However, after the destruction of the emulsion, these reagents do not, there is a clear boundary between water and oil phase. In this regard, the system was added a water-soluble reagent that promotes exfoliation. This is a natural polysaccharides and proteins based on agricultural products. We used a mixture of 50-80 wt.%. unrefined raw sugar and 7-20% wt. casein. Added the mixture was 0.1% wt. from oil sludge.

In table. 1 shows experimental data in the presence of the Stripping reagent. These data for sludge, waste oil refineries. Use as a demulsifier powder sawdust in the amount of 3% wt. from sludge showed a decrease in the dispersion of water in the sludge from 55% wt. up to 10% wt. The amount of the Stripping reagent amounted to 0.1% wt. from the sludge. Re emulgirovannie for the same quantitative characteristics of the demulsifier and the Stripping reagent can reduce the amount of dispersed water up to 1% wt. (PL. 2).

Thus, the proposed method emulgirovanija provides the special filtering systems, to achieve dehydration of the emulsion sludge type "water in oil" with the use of simple technology to separate the aqueous phase from the organic layer, based only on the mixing of the solid phase reagents, petroleum products, followed by settling.

1. How emulgirovanija oil with dispersed aqueous phase, consisting in the use of active high-molecular compounds, characterized in that the oil add solid insoluble compounds hemicelluloses and lignin, followed by stirring and settling of the mixture.

2. The method according to p. 1, characterized in that the oil add sawdust.

3. The method according to PP.1 and 2, characterized in that the oil is additionally add the Stripping reagent on the basis of natural products containing 50-75% polysaccharides and 7-20% protein.

 

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1 ex

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