SU1227635A1 - Method of producing inhibitor of mineral salt deposition - Google Patents

Description

This invention relates to the chemistry of organophosphorus compounds, and specifically to a method. obtaining an inhibitor of deposits of mineral salts, which is used to control the deposits in the well equipment, in the circulating water supply systems and in the heat power industry.

A known method for producing an inhibitor of deposits of mineral salts by the interaction of formaldehyde, phosphorous acid and a mixture of polyethylene-polyamine, monoethanolamine, ammonium chloride carbamide and / or hexamethylentetramine, taken in a weight ratio of 100: 55-75: 25-40: 50- 70: 34- 35 1.

The closest to the proposed technical essence and the achieved result is a method of obtaining an inhibitor of deposits of mineral salts, which consists in the fact that formaldehyde is subjected to an interaction with phosphorous acid and the product of interaction with 110-dioroethane and aqueous ammonia.

having a composition, wt.%: polyethylene polyamine hydrochloride 38-70, ammonia 0.1-1, ammonium chloride 1-6, water 25-27, at 98-102 ° C in a medium diluted with hydrochloric acid, followed by alkalizing the resulting solution sodium hydroxide to pH 3.6-3.9 2j.

The disadvantage of this method is the use of high temper TUR for carrying out the process, in addition, the inhibitor obtained in a known manner is not sufficiently effective in stabilizing the hardened solutions of mineral salts.

The aim of the invention is to increase the inhibitory activity of the product.

This goal is achieved by the fact that according to the method of obtaining the inhibitor of deposits of mineral salts, formaldehyde is subjected to interaction in aqueous medium with phosphorus trichloride and a condensation product at 5-20 s of epichlorohydrin and ammonia, taken in a molar ratio of 1: 5-15,% by weight : a polymer derivative of 1,3-diaminopropanol-2 of the formula

HjNpCHi CH-CHo-NH-lH. L, „Jn

3-33, sodium chloride 2-25; water - the rest, while at 100 mach. by

2276352

the 1,3-diaminopropanol derivative of Limonium takes 255-300 May, h. formaldehyde and 400-500 ma.cho of trichloric phosphorus, and the process is carried out at 35-50 ° C.

The proposed method makes it possible to obtain an inhibitor of the deposition of mineral salts, with an efficiency exceeding the effectiveness of the known 10 inhibitor by 23-46%.

Example 1.In enamelled reactor with reflux condenser

35

zo

40

, devices for mixing, measuring the peruntura and pH and cooling,

15 load 100 kg of condensation product at 5 C of epichlorohydrin and aqueous ammonia, taken in a molar ratio of 1. 15 containing 22 kg of a polymer derivative of 1,3-diaminoprop20ol-2 and 15 kg of sodium chloride, then: With stirring 62.4 kg of formaldehyde is loaded into the reactor, after which, with stirring, 100 kg of trichloride of phosphorus is loaded into the reactor for 1 hour at 15-25 C. After the completion of loading, the temperature in the reactor is raised to 35 ° C and held for 4 hours. As a result of the synthesis, 265 kg of inhibitor of 33% concentration is obtained.

Example 2. A plant for the synthesis of a scaling inhibitor is the same as in Example 1.

Load 100 kg of condensate w product at 15 C of epichlorohydrin and aqueous ammonia, taken in a molar ratio of 1:15, containing 22 kg of a polymer derivative of 1,3-diaminopropanol-2 and 15 kg of sodium chloride. Then, with stirring, 62.4 kg of formaldehyde is loaded into the reactor, after which, with stirring, the reactor is loaded for 1 hour

kg

about,

1 h load 100

phosphorus trichloride at 15–25 ° C. At the end of the loading, the temperature is raised to 45 ° C and held for 4 hours. As a result of the synthesis, 264 kg of inhibitor of 33% concentration is obtained.

Example 3. The installation for the synthesis of a scale inhibitor is the same as in Example 1.

100 kg of condensation product is charged at 20 ° C epichlorohydrin and aqueous ammonia, taken in a molar ratio of 1:15, containing 22 kg of 1,3-diaminopropanol-2 polymer derivative and 15 kg of sodium chloride, then at

while stirring, 62.4 kg of formaldehyde is loaded into the reactor, after which, with stirring, 100 kg of three-chloro-phosphorus at 15–25 ° C are loaded into the reactor for 1 h. At the end of the charge, the temperature in the reactor is raised to 50 ° C and held for 4 hours. As a result of the synthesis, 265 kg of inhibitor of 33% concentration is obtained.

Examples 4-6 provide details of the preparation of a scale inhibitor at various molar ratios of zichlorohydrin and ammonia.

scaling inhibitor is the same as in example K

100 kg of a condensation product are charged at 20 s of zichlorohydrin and aqueous ammonia, taken in a molar ratio of 1: 5, containing 3 kg of a polymer derivative of 1,3-diaminopropanol-2 and 2 kg of sodium chloride. Further, with stirring in the reactor for-. 8.6 kg of formaldehyde are loaded, after which, with stirring, 13.6 kg of phosphorus trichloride are loaded into the reactor at 15–25 ° C for 1 h. At the end of the load, the temperature in the reactor is raised to 40 ° C and held20

0.20-0.25 0.10-0.20 0.60-0.65

1.0

25

within 4 hours. As a result of the synthesis, 122 kg of inhibitor of 10% concentration are obtained.

Example 5 The installation for the synthesis of a scale inhibitor is the same as in Example 1.

100 kg of a condensation product is charged at 20 ° C of zichlorohydrin and aqueous ammonia, taken in a molar ratio of 1:10, containing 22 kg of a polymer derivative of 1,3-diaminopropanol-2 and 14 kg of sodium chloride. Then, with stirring, 63 kg of formaldehyde is loaded into the reactor, after which, with stirring B, the reactor is charged with 100 kg of phosphorus trichloride at 15–25 ° C for 1 h. At the end of the load, the temperature in the reactor is raised to 40 s and maintained for 4 hours. As a result of the synthesis, 260 kg of inhibitor of 33% concentration is obtained.

PRI me R 6. The installation for the synthesis of scale inhibitors is the same as in example 1.

Load 100 kg of condensation product at 20 s of epichlorohydrin and aqueous ammonia, taken in molar co30

Example 4 Installation for the syn-, | 5 ratio of the components of the synthesis of a scaling inhibitor, parts by weight: Polymer derivative 1,3-diaminopropanol -2 Sodium chloride Formaldehyde Phosphorus trichloride

The optimal synthesis conditions are given in Example 5. Example

The installation for the synthesis of a scale inhibitor is the same as in Example 1.

100 kg of the condensation product are charged at 20 s of zichlorohydrin and aqueous ammonia, taken in a molar ratio of 1:10, containing 20 kg of the polymer derivative of 1,3-diaminopropanol-2 and 10 kg of sodium chloride. Then, with stirring, 60 kg of formaldehyde is loaded into the reactor,; then, with stirring, 100 kg are charged to the reactor for 1 hour. phosphorus trichloride at 15-25 s. At the end of the charge, the temperature in the reactor is raised to 40 s and maintained for 4 hours. As a result, a kg of inhibitor of 34.5% concentration is obtained.

Example 8. Installation for the synthesis of a scale inhibitor

35

40

45

50

same as in example 1.

100 kg of condensation product is loaded at 20 ° C of epichlorohydrin and aqueous ammonia, taken in a molar ratio of 1:10, containing 25 kg. the polymer derivative of 1,3-diaminopropanol-2 and 20 kg of sodium chloride. 55 Then, with stirring, 65 kg of formaldehyde is loaded into the reactor, after which, with stirring, 100 kg of three 12,276334 are loaded into the reactor for 1 h.

a ratio of 1:15, containing 33 kg of a polymer derivative of 1, 3-diaminopropanol-2 and 25 kg of sodium chloride. Then, with stirring, 95 kg of formaldehyde is loaded into the reactor, after which, with stirring, 150 kg of phosphorus trichloride are loaded into the reactor at 15-25 s for 1 h. By

at the end of the loading, the temperature in the reactor is raised to 40 ° C and held for 4 hours. As a result of the synthesis, 345 kg of inhibitor of 40% concentration is obtained.

In examples 7-8 are given conditions and

0.20-0.25 0.10-0.20 0.60-0.65

1.0

the ratio of components of the synthesis of scale inhibitor, wt.h .: Polymer derivative 1,3-diaminopropanol -2 Sodium chloride Formaldehyde Phosphorus trichloride

same as in example 1.

100 kg of condensation product is loaded at 20 ° C of epichlorohydrin and aqueous ammonia, taken in a molar ratio of 1:10, containing 25 kg. the polymer derivative of 1,3-diaminopropanol-2 and 20 kg of sodium chloride. Then, with stirring, 65 kg of formaldehyde is loaded into the reactor, after which, with stirring, 100 kg of three kg are loaded into the reactor for 1 h.

phosphorus chloride at 15-25 C. At the end of the loading, the temperature in the reactor is raised to 40 ° C and held for 4 hours. As a result of the synthesis, 265 kg of inhibitor of 38% concentration is obtained.

Below are the data on the effectiveness of scale inhibitors obtained according to examples 1-8 (concentration of the additive 10 mg / l),%:

Ying Gibit Ohr, obtained in Example 153

2. 62.8

370.1

442.0

564.0

678.6

762.6

865.7

Conducted: research has proven a synergistic effect of a mixture of phosphonomethylated products in relation to the inhibition and extrusion of mineral salts from stratal waters. Moreover, inhibition extends both to an increase in the induction period before the start of nucleation and to a decrease in the rate of crystal formation.

The assessment was carried out by introducing in 750 ml of mineralized reservoir water 5.0-20.0 mg / l (counting 10 €% product) of the inhibitor obtained by the known and proposed methods.

In glasses of stainless steel pour 200 ml of saline water treated with the inhibitor in the amount of 5.0; 10.0 and 20.0 mg / l, after which part of the water evaporates the heating of the L.Veselovsk editor

Compiled by V.M. Kusheva

Tehred N. Bonkalo Proofreader S. Shekmar

Order 2261/26 Circulation 343.Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

by the In the process of evaporation by heating, 550 ml of saline water treated with the inhibitor are continuously added, thereby keeping the working volume constant. In all the experiments, the evaporation rate was 2.75. Water with a density of 1.055 g / cm of the following composition, meq / l was used as mineralized formation water: Total mineralization 2717, 596 K and Na 1149.022

Ca Mg CE

sof nso;

135,763

74,013

1277,595

77,991

0.196

The effectiveness of the inhibitor obtained by the known and proposed method is judged by the amount of precipitate formed on the walls of the metal cup with the addition of the inhibitor and in the control experiment. The efficiency calculation is made according to the formula

ri -

100

where E is the protective effect of equipment from deposits of mineral salts,% j is the weight of deposits on the walls of the glass in the control experiment, rj

the same, with the addition of an inhibitor. From the above data it can be seen that the inhibitor of deposits of mineral salts, obtained by the proposed method, greatly exceeds the inhibitor obtained by the prototype method.

A b

Claims (3)

METHOD FOR PRODUCING AN INHIBITOR OF DEPOSITS OF MINERAL SALTS of interactions — by the action of formaldehyde, a phosphorus-containing compound with a nitrogen compound in an aqueous medium at an elevated temperature, characterized in that, in order to increase the inhibitory activity of the product, phosphorus trichloride is used as the phosphorus-containing compound in the case of nitrogen compound 5 -20 ° C of epichlorohydrin and ammonia taken in a molar ratio of 1: 5-15 composition, wt.%: Polymer derivative 1,3 diaminopropanol- 2 formulas where n = 1-5, _g 3-33; sodium chloride 2-25; water - the rest, while 100 wt.h. the polymer derivative of 1,3-diaminopropanol take 255-300 wt.h. formaldehyde and 400-500 parts by weight phosphorus trichloride, and the process is conducted at 35-50 ° C. SU „„ 1227635