SU857233A1 - Composition for oil dehydration and desalinization - Google Patents

Description

or the general formula II or the general Formula 111 CHJOJ l OCH, with to 5-10 in the following ratio of components, (2-hydroxypropylene amine) -poly- (hydroxyethyl 1-methylenisoquinoline chloride) with molecular groups 4 of general formula I, II or III to too The oil emulsion is treated with stirring and heated to a temperature dependent on the properties of the treated oil. The dehydration process and desalting oil emulsion can be carried out fused on the equipment of oil treatment centers in oil fields and oil refineries. The effectiveness of the proposed composition for oil dehydration and desalting was tested under laboratory conditions and is shown in the following examples. Example 1. A composition based on non-ionogenic demulsifying agent-disolvane 44 1 and the following water soluble polymers are used, i.e., A-poly- (2-oxypropyleneamine) poly (oxyethylene-1-methylene-7-picolinium chloride) with a molecular weight of 650 and the formula -o) 4. CV9 C: H2-HM, ®ce0 with a weight of 980 and the formula E-poly- (2-ox-phO1-thlenimine) -poly- (hydroxyethyl-1-methylyle-hiyaldinium chloride) of the formula Her NH (CH2-CH-cH2-NH) 2-Cc Ratio; above components is, weight. Disolvan50-90 Water-soluble polymer (A – G) up to 100 The consumption of water-soluble polymer is 1-10 g / t of emulsion. The dehydration is subjected to a model emulsion obtained by mixing a vasel of powdered oil with an aqueous solution of ttri chloride on a mechanical stirrer at a speed of 3000 rpm at room temperature for 30 minutes. The stabilizer of the model emulsion is silica gel resins isolated from Arlaco oil. The resins are introduced into a vaseline dressing in xylene solution. In the prepared emulsion, the salt content is determined. A model emulsion containing 1200 mg / l of chloride salts and 1% of water is treated with the above composition according to the following procedure: an emulsion heated to 60 ° C — an aqueous solution of the composition is introduced and the mixture is stirred at 500 rpm for 30 minutes and held for 1 hour at 60 ° C. E, but with the formula F - polymer n. 4. Ho) gCH2- j: H-CH2-MHa ®ce © After the residue, the separated water is drained, and the average sample is taken from the water layer for the content of chloride salts and water. For comparison, under the same conditions, an emulsion is processed using a known compound of disolvium 4411 and polyacrylamide (PAA). PAA consumption - 10 g / t. The results are summarized in table. 1. The results of the dehydration and desalting of Chegodaevsky oil with the proposed composition using disolvan 4411 and separaol 25 as a non-ionic demulsifier in comparison with the known non-ionogenic demulsifier - polyacrylamide (10 g / ton of oil) at a 50:50 weight ratio at a ratio of 50% at a ratio of 50% at a ratio of 50% at a ratio of 50%. Water-soluble polymer (AE) equal to 90:10 (consumption of water-soluble polymer 1 g / t of oil) are summarized in table. 2. PRI mme R 2. Use a composition based on a non-ionic de-emulsifier and a water-soluble polymer of the formula

where m 5, 6, 10

Z-O -; ). -

TO

where m 5, 8, 10

in the following ratio, wt.%:

Nonionic demulsifier50-90

Water soluble polymer

(Ik) to 100

The proposed composition treats a model emulsion and Shushnursk oil with a chloride salt content of 3280 mg / l and 1.8% water according to the method described in Example 1. The results are summarized in table. 3 and 4.

PRI me R 3. Use the composition on the Oskov nonionic demulsifier and polyvinyl -.

benzyl / 3-picolyl chloride with a molecular weight of 91,000 and the formula

50

/

in the following ratio of components

wt.%: Neiopogenic desmulgator 50-90 Popivinyl-benzyl- | 3 picolinium chloride then 100 tab. 5 and 6 shows the results of the study of the effectiveness of the proposed composition

T "vlsh" "t

Table 2 in the processing of a model emulsion containing 1200 mg / l of chloride salts, as well as Arlan oil with a content of 3880 mg / l of chloride salts and 1.2% of residual water. The treatment is carried out according to the procedure described in Example 1.

Components

Composition

Source oil3280 / 1.8

NSA2300 / 1,0

Nonionic surfactants (90%) + polymer A

(t 6) (10%) 636 / 0.6

Nonionic surfactants 90% + polymer B

(t 8) 10% 1030 / 0.8

1HAL 50% + PAL (5.0%) 1210 / 1.0 Notes

The ratio of components, wt.%

J. mg / p and water, yo

Polymer I disolvan 4411

Initial

ABOUT

ten

th

35

50

60

100

50

100

Components, wt.%

Composition

offerable

Crude oil

Nonionic surfactants

Nonionic surfactants 90 + polymer, 10 590 / 0.6

The salt content, mg / l, and water,% in the processing of the emulsion composition

t

X-2647

with disolvanom 4411

3280 / 1.8 2390 / 1.0

556 / 0.6

890 / 0.6 136 / 011.4

Residual salts, mg / l and water.

1200 / 1.0 275 / 0.5 195 / 0.2 186 / 0.2 130 / 0.18 344 / 0.26 925 / 1.0

145 / 0,2 920 / 1,0

Table 6

The salt content, mg / l, water, after treatment with the composition

with disolvanom 4411

X-2647 3880 / 1.2 3880 / 1.2 2340 / 1.0 2390 / 1.0 440 / 0.6 e: the polymer consumption in the present composition is 1 g / t, and in the known composition - 10 g / t of oil . Table 5

13

Nonionic surfactants (50%) + PAA

Famous

(50%) 1205 / 0.8

Note: polymer consumption in the proposed composition

Claims (1)

1 g / t of oil, and in the known - 10. g / t of oil. The invention Composition for dehydrating and desalting oil based on non-ionic demulsifier 20 and a water-soluble polymer, distinguishes H, N- (CH -CH-CH3-MH), -CH at n 4-6, where) -O. G or of the general formula II HCh iO OR of the general formula Sch. HA GA v / / ,, - (s / l 14 857233 Continued table. 6 1180 / 0.7, in order to increase the effectiveness of the composition, as a water-soluble polymer, it contains a cationic polyselectrolyte with quaternary ammonium groups of general formula I -CH-0) and-CHg- (pH-CH2-KH2 N®ce® // v / ff and to 5-10, and the following is the ratio of components, Nonionogenic demulsifier .50-90 Clion-active polyelectrolyte with quaternary ammonium groups of general formula I, II or III up to 100 Sources of information, which were taken into consideration at excursion 1. Author. USSR certificate No. 445681, C 10 G 33/04, published on July 1975 (prototap).