SU1342912A1 - Method of breaking water-oil emulsion - Google Patents

Abstract

The invention relates to oil preparation and can be used in the processes of dehydration and desalting of oil. The goal is to simplify the process and reduce the loss of oil. The original water-oil emulsion or dehydrated oil, taken in an amount of 0.4-3.0 wt.% Based on the destructible water-oil emulsion, is treated with ozone at 20-80 ° C and specific consumption of ozone 5-10 kg / t . The resulting product is fed into destructible water-oil emulsion, followed by sludge of the mixture obtained. After 4 hours, the water is completely separated from the emulsion and anhydrous oil is obtained. 2 tab. with 4 WITH

Description

1G

Nyubrstenn otiosich with to H (; ft 1 P (1D-roToFiKe 11 can fipiirii use in juvenile pteplichkis and oil refinery ptr n (1Y and refining industry).

The purpose of the invention is to reduce rioTep oil from evaporation and to simplify the process technology by reducing the volume of oil processed by the oxidizing agent.

This goal is achieved by treating with ozone at 20-80 ° C and a specific ozone consumption of 6-10 kg / ton of water-oil emulsion and dehydrated oil, m3 in the amount of 0.25-1.75% by weight of the water-oil emulsion being destroyed, and feeding the resulting product p emulsion followed by sludge.

Example 1. 50 ml of light (p4 0.869), low viscosity (Vj, j, l3.3 cSt), slightly resinous (3.5% by weight resinous asphalt), high paraffin (6.1% by weight paraffin wax ), sulfurous (0.82 wt.% sulfur) oil of the horizon of the LV, for 6.25 minutes, is purged in a bubble-type reactor with ozone, tested with a high-voltage ozone generator with nponycKHoii air (oxygen) capacity of 100 l / h and produced - water level of 2.5 g / h ozone, controlling the completeness of ozone absorption (absence of it in the exhaust gas) using a UV detector analyzer ADF-4 Quantity attached ozone 6.0 g / kg of oil.

3.5 m.ch of the ozonized oil obtained is added to 200 ml of a stabilized emulsion of the same oil containing 40% by weight of water and 16000 mg / l chloride salts, emulsion is mixed in a homogenizer for 2 minutes at 10,000 rpm and set aside at. Anhydrous oil containing 5 mg / l of residual salts is obtained after a five hour sludge. The content of residual and oil and the concentration of chloride salts are set according to GOST.

PRI mme R 2. 2, About ml of oil, prozonized, as indicated in Example 1, are mixed in a homogenizer with 200 ml of the same emulsion. After settling for 6 hours at 80 ° C, oil with a water content of 0.48% by weight and residual salts of 17 mg / l is obtained.

Froze 50 ml of the same oil is ozonated according to the conditions described in

4 2

example 1, and tsh pp g 7, - min. the amount of occina, hp of the components (M (1-mi oil, 7.2 g / kg.

200 ml of emup1, identical to that used in the previous examples 1 and 2, are mixed in a homogenized P1zator with 1 ml of received 1 ml of ozonized oil and settled at, getting through

| - | 6h anhydrous oil with a content of 6 mg / l chloride 1 x salts.

Example 4. 200 ml of the same emulsion is mixed in a homogenizer with 0.5 ml of oil ozonized, as in

, example 3, and defend at 80 ° C. After 6 hours, 96% is separated, and after 8 hours, 98% of the initial amount of water. In the upper layer of the split system, anhydrous oil is produced,

; containing 6 mg- / l chloride salts. At the interface of the oil and water phases, an emulsion layer remains intact, the volume of which is 1% of the volume of the original emulsion.

, Example 5. 50 ml of a stabilized emulsion prepared from the same oil as in Examples 1-4 and containing 40% water and 16 g / l of chloride salts are ozonized for

Q 4.5 min. The amount of ozone bound during this time is 7.2 g / kg oil.

1.6 ml of the ozonated mixture obtained is added to 200 ml of the original emulsion, mixed in a homogenizer for 2 minutes (10,000 rpm) and set aside.

-1 sucks at 80 ° C. After 6 hours, anhydrous oil is obtained, containing 7 mg / l of residual chloride salts.

,, PRI me R 6. 50 ml of light (0.856, 20 8.2 cSt), slightly resinous (8.3 wt.% Resinous asphalt substances), low paraffin (1.2 wt.% Solid hydrocarbons), sulfur (0.95 wt.% Sulfur), methane-naphthenic by the hydrocarbon composition of the oil of horizon AB7, is ozonized, as described in example 1, for 11 minutes. The amount of ozone bound by oil is 10.0 g / kg.

200 ml of a stabilized emulsion from the same oil containing 40% water and 18 g / l chloride salts are mixed in a homogenizer with 0.5 ml of the ozonated product obtained and settled at 70 ° C to obtain an anhydrous oil after 6 hours. The concentration of residual salts in the demulsified oil is 4 mg / l.

B

0

eleven

Example. 50 ml of naphtench-metanovo oil (horizon LB "), characterized by average yAejThHi.rM carried (f 4 880) and viscosity (V2o 15.0 cSt), resinous (10.2 wt.X resinous-asphalt substances), para- Finns (2.6 ppm solid paraffin), sulfurous (1.16 wt.% sulfur), is ozonized, as described in Example 1, for 7, j minutes before the oil absorbs ozone in an amount of 7.2 g / kg.

200 ml of a stabilized emulsion from the same oil (40% water, 26 g / l of chloride salts) are mixed in a homogenizer with 1.5 ml of oil treated with ozone and settled at. Through A, anhydrous oil is obtained, containing 6 mg / l of residual salts.

Example 200 ml of a stable emulsion and 2 ml of ozonized oil used in Example 3 are mixed in a homogenizer (2 minutes, 10,000 rpm), after which the mixture is settled at 60 ° C. In sludge, an upper oil layer is formed with a water content of 0.23% and salts of 11 mg / l and a lower water layer devoid of oil. Part of the emulsion remains intact, located at the interface. After 6 hours, 96% of the indicated composition is isolated in the form of separate phases and 97% of the initial amounts of water and oil in the emulsion after 8 hours; the volumes of the non-separated emulsion layer are respectively 3.8 and 2.8% of the volume of the original emulsion.

Example9. 0.5 ml of oil ozonized, as described in Example 3, is added to 200 ml of an emulsion containing 20% oil, 80% water and 32 g / l of chloride salts, after mixing in a homogenizer, the mixture is settled at 80 C. After 4 h get anhydrous oil content, 7 mg / l residual

salts.

Example 10. 1.0 ml of oil, ozonized as in Example 3, is added to 200 ml of an emulsion containing 95% of the same oil, 5% water and 2.0 g / l of chloride salts, the mixture is stirred in a homogenizer, and settled at 70 ° s

9

g

about 5 about

„

five

five

12

After 5 hours, anhydrous oil is obtained with a content of 6 mg / l of residual salts.

Example 1 1. 1, 0 ml of oil, ozonized as in example 3, is added to 200 ml of a freshly prepared (not stabilized with a long exposure) emulsion, the mixture is mixed with a B homogenizer and settled at 80 ° C.

After 3 h, anhydrous oil is obtained containing 5 mg / l of residual salts.

In tab. 1 shows the flow rates and the dynamics of the oil sediment in examples 1-11.

Example 12. For comparison, destroy the water-in-oil emulsion by a known method: by blowing through the volume of the emulsion 10 volumes of air per 1 volume of the emulsion for 1 hour at 65 ° C, followed by settling for 8 hours at the same temperature.

PRI me R s 13 - 16 (comparative). The destruction of the emulsion is carried out by treating it with a dissolving dissolvant 4411 in various dosages, followed by sludge at 80 ° C (example 13, 14 and 16) or at (example 15). Destructible emulsion in examples 13-15, as in examples 1-12, before the destruction of pre-stabilized by prolonged exposure at room temperature. The results of the dynamics of the destruction of the oil emulsion after air oxidation or with the addition of dissolvan 4411 are given in Table. 2

Claims (1)

Invention Formula A method of destroying a water-oil emulsion, including treating with an oxidizing agent and sludge to produce dehydrated oil, characterized in that, in order to reduce the loss of oil and simplify the process, a water-oil emulsion or dehydrated oil in an amount of 0.25-1.75% by weight of The destructible water-oil emulsion is treated with ozone at a temperature of 20-80 ° С and a specific ozone consumption of 6-10 kg / t, and the product obtained is fed into the destructible water-oil emulsion. OP 40 40 16 g / l 16 on efti 6 th John 17.5 10.0 her - 91 80 31 69 88.5 97.5 100 52 80 30.5 62 81 84 96 Ч, 5 99.5 0.48 17 40 16 7.2 5.0 31 Nuclear weapons 63 83 94 98 100  Che stabilized emulsion. Reagent - ozonized emulsion. Indicators Disolvana consumption, g / t of oil The temperature of the sludge, C The amount of water,%, sediment vasis per, h: one 6 1 1 Table 1 five 40 16 40 18 40 26 7.2 10.0 8.0 2.5 31 80 12 62.5 84 93.5 97.5 100 22 70 46 76 89 93.5 97.5 100 47 80 34 67 89 too 40 16 63 60 27 63 82 87 92 96 97 80 32 7.2 2.3 sixteen 80 37 69 91 100 5 2 7.2 5.0 31 70 22 61 83 96.1 100 40 16 7.2 5.0 31 80 54 87 100 0.0 6 Table 2 Example 1213141516 404040 806080 71,582,586 81,784,091 86,785,395 Content in a demulsified oil: water, around 33.3 8.5 5.1 5.5 0.53 salts, g / l 12,2 2,2 1,2 1,3 0,1 0,13 Experiment with unstabilized emulsion.