CS228838B1

CS228838B1 - Non-foaming agent with dispersing and sequestering effect

Info

Publication number: CS228838B1
Application number: CS703882A
Authority: CS
Inventors: Milan Ing Paulovic; Lubomir Ing Sutor; Jozef Ing Spacir; Tomas Ing Sebo; Ladislav Ing Csc Novak; Jozef Kunovsky; Robert Bartonicek
Original assignee: Paulovic Milan; Lubomir Ing Sutor; Jozef Ing Spacir; Tomas Ing Sebo; Novak Ladislav; Jozef Kunovsky; Robert Bartonicek
Priority date: 1982-10-04
Filing date: 1982-10-04
Publication date: 1984-05-14

Abstract

Vynález patří do oboru úpravy vod, najma oirkulaSnýoh chladiaoích vod v ohemiokom, pt>tx*avinárskom, farmaoeutickom, hutnom, oelulózopapierenSkom priemysle a energetiko. Rieši zamedzovanie tvorby inkrustov pomocou nepenivébo prostriedku s dispergačným a sekvestraSným účinkom, ktorý ako aktívnu zložku obsahuje s 3 až 50 mólmi etylénoxidu oxyotylováný alifatický amínoalkohol fosfátovaný na obsah fosforu 1,0 až 15 % hmot.The invention belongs to the field of water treatment, especially circulating cooling waters in the chemical, petrochemical, pharmaceutical, metallurgical, pulp and paper industries and energy. It solves the problem of preventing the formation of incrustations by means of a non-foaming agent with a dispersing and sequestering effect, which contains as an active ingredient an oxyethylated aliphatic amino alcohol phosphated to a phosphorus content of 1.0 to 15% by weight with 3 to 50 moles of ethylene oxide.

Description

2,228,838

BACKGROUND OF THE INVENTION The present invention relates to a non-foaming agent having a dispersing and sequestering effect over a heat transfer medium, in particular circulating circuits. It is obvious now. that, in the absence of service water, it must be rationally conserved, and measures taken so that the water is reused several times, especially for cooling purposes. It is the most sophisticated. that the cooling water in the circulation system circulates from the cooling apparatus in which heat is collected to the cooling apparatus. wherein the air stream and the partial evaporation are cooled and cooled down to heat exchangers. The useful cooling water contains variously soluble substances, in particular calcium and magnesium salts. furthermore, algae, sludge. Inorganic and organic non-soluble substances. These substances form encrustations, especially on the heat exchangers of the heat exchangers, and consequently result in strong corrosion in addition to reducing the cooling efficiency.

In order to prevent corrosion of the cooling systems, inhibitors of a different kind are added to the cooling water.

To prevent the growth of mL-organisms, biocides are added. In order to prevent deposits and encrustations in the cooling systems, dispersing and sequestering agents are added to the circulation water.

The sequestering agents form non-stoichiometric complexes to form insoluble salts and to form layers on the surface of the materials. Again, the dispersing agents have the task of maintaining the solid particles already formed, which can be derived from rust, dust, clays, mold, bio-mass and especially calcium carbonate in water in the form of a dispersion in order not to settle and adhere on the walls of the apparatus tubes. The composition of the dispersants of the asvesting agents is varied. Typical dispersants include the anionic polymers of the carboxylic bile in the form of their alkali salts. The polymers may have a molecular weight of about 50,000 and thus may have hundreds of functional COOH moieties incorporated into their molecule. They are used as dispersants, for example, oxyethylated amines Οθ to C24. which are recommended for dispersing SiO 2 / silica / water / V. Briton. pat. 952,352], similar to oxyethylated nonylphenol / V, Brit. The sequestering agents include, for example, ethylenediaminetetraacetic acid and organophosphonic acid compounds. Recently, these compositions have been combined with suitable corrosion inhibitors, coated with biocidal products. Various combinations of polymeric ingredients, especially acrylic acid, are used in several cases. For example, a water supply of 5 ppra of acrylic acid and 2-hydroxyethyl methacrylate sodium monophosphate will reduce clogging in the heat exchangers and cooling towers by 75% / s. pat. 79, 29, 315]. Phosphated polyacrylic acid has similar properties / Braz. pat. 7,806,282). Patent 1 081 694 discloses a phosphate ester preparation of glycerin or phosphated oxy-ethylated glycerin. The surfactants include ethylene oxide copolymers with Tetronic propylene oxide / ethylene oxide copolymer with propylene oxide for ethylenediamine. The composition prepared by oxypropylated amine phosphation or phosphatation of oxypropylated hydroxy hydrocarbons is disclosed in U.S. Pat. 3 965 θθέ. NSR pat. No. 2,453,107 discloses an improved composition used in cooling water prepared by phosphating alkanol alcohol with polyhydro-4 - 228 838 xylen compounds. The most used amine alcohols are ethanolamines. A typical polyhydroxy compound is glycerol with 1.5 to 2.5 moles of ethylene oxide, oxyethylated mannitol, oxyethylated sorbitol, oxyethylated trimethylol propane with 1.5 to 2.5 moles of ethylene oxide. A water-soluble zinc salt, e.g., zinc chloride or zinc sulfate, is added to the phosphester ester mixture at concentrations of from 5 to 30% by weight. in relation to phosph oresters. Czechoslovak copyright certificate No. 214 615 discloses a dispersant and scavenger reducing agent from a mixture of an ethylene oxide copolymer with propylene oxide and an alkyl polyglycol ether phosphate.

A drawback of the present compounds is that several formulations are foaming, e.g., oxyethylated acyclic amines, C8 to C12, oxyethylated nonylphenol, phosphated esters of oxyethylated glycerin and the like, and must prepare a hardly available raw material or to achieve a dispersion-sequestering effect, to combine several compounds.

The drawbacks of the prior art in this field are largely eliminated by the non-foaming, dispersing and sequestering agent of the present invention, with from 3 to 50 moles of ethylene oxide oxyethylated aliphatic amino alcohol having 2 to 10 C phosphated to a phosphorus content of 1.0 to about 1.0 moles. 15> wt.

The aliphatic amino alcohol may be monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, diethylaminoethanol, dimethylaminoethanol or mixtures thereof. Phosphatation is carried out by conventional phosphating agents such as ΡΟθ · β 3 and polyphosphoric acid. The phosphation results in the formation of the esters, predominating with the use of P 2 O 6 monoester diester. The ester obtained can be used in acid form, or it can be neutralized with aliphatic or amine alcohols. The advantage of the non-foaming agent with the dispersing and sequestering effect according to the invention is that several substances can be combined to achieve a dispersing and sequestering effect, but the efficacy can be achieved by one compound. hardly accessible raw materials are needed, oxyethylation and phosphatia are common techniques used to produce tsnidides. The product obtained is good in water, so no other solvents are needed. A further advantage of the composition according to the invention is that it is not sweated when used. The composition can be combined with corrosion inhibitors and biocidal agents. Example 1 3

One hundred and twenty meters of stainless steel autoclave was charged with 122 g of monoethanolamine and oxyethylated under a nitrogen atmosphere and agitated with total addition of ethylene oxide (0.056 g, 12 moles). Oxyethylation temperature 135 to 145 ° C, pressure 0.3 MPa. * 197 g of product formed is phosphated at 60 to 80 ° C with P2 ° 5 · θβ ^ ονβ is used 47 g Ρ2 ° 5 * ^ r ° · dukt contains 8 %, 4 wt. phosphorus. EXAMPLE 2 122 g of monoethanolamine are oxyethylated under the conditions of Example 1, with the addition of 1760 g of ethylene oxide / 20 moles / 188 g of product formed with phosphate at 60 to 80 ° C with P2 ° 5 using 28 g of P 2 O 5. The product contains 5.7% phosphorus. EXAMPLE 3 61 g of monoethanolamine is ethoxylated under the conditions of Example 1 with the addition of 1320 g of ethylene oxide (30 moles), 138 g of the resulting product is phosphatetized at 60,228,838 to 80 DEG C. .beta. The product is 4.0% by weight of phosphorus. EXAMPLE 4 105 g of diethanolemine e and oxyethylated under the conditions of Example 1, with the addition of 1,980 g of ethylene oxide (45 moles), 209 g of the resulting product was phosphated with the base of Example 1 with 14 g of θ2θ5. phosphorus. EXAMPLE 5 150 g of triethanolamine are oxyethylated under the conditions shown in the following, with the addition of 220 g of ethylene oxide (5 moles), 185 g of the product formed, phosphatizing the condition of Example 1 with 71 g. EXAMPLE 6 75 g of monoisopropanolamine are oxyethylated under the conditions given in Example 1, with the addition of 1320 g of ethylene oxide (30 moles), 209 g of the resulting product safosphate under the conditions of Example 1 with 7 g. phosphorus. EXAMPLE 7 192 g of triisopropanolamine are oxyethylated under the conditions of Example 1, adding 880 g of ethylene oxide (20 moles). 214 g of the resulting product were phosphate under the conditions of Example 1 with 28 g / g. The product contained 5.1% by weight of phosphorus. EXAMPLE 8 228,838 118 g of diethylaminoethanol are oxyethylated under the conditions of Example 1, with the addition of 352 g of ethylene oxide (8 moles), 188 g of the resulting product is phosphatized under the conditions of Example 1 with 19 g of PgOg. is 4.0% by weight of phosphorus. EXAMPLE 9 89 g of dimethylaminoethanol are oxyethylated under the conditions of Example 1, with the addition of 1100 g of ethylene oxide (25 moles), 214 g of the resulting product, phosphatizing the condition of Example 1 with 9 g of P2O5. phosphorus. Example 10

The < RTI ID = 0.0 >< / RTI >

Chemicals needed! solutions and aids: - 0,007 M solution KC1 / 0,5219 g, l * 1 / - calcium carbonate precipitated Csl, 2 - Lachema, Srno

- 0.1 M Chelaton III solution / 37.224 g, 1 "V - Ammoniacal buffer: 54 g NH 4 Cl 350 µm 3 NH 3 OH conc, 4 3 H 2 O to 1000 crn - 1: 1 Eriochrome black indicator 10 - HC1 / 1: 1 - - thermostat - stopwatch - measuring vessel: This is basically a double-shell beaker 8 through the inlet and outlet of the tempering liquid.

The dimensions of the container are: inside diameter70 mm, height 120 mm,

A 60-meter-high outlet with a tap & v 228 838 · »powerful agitator made of stainless steel - Erlenmeyer vacuum, 250 cm3 titration flask - graduated cylinder, 250 cm volumetric flask, burette, pipette.

Measure the measuring flask with 350 cm KC1 solution,

Insert the stirrer to the indicated height, which must be kept the same for each stroke. The solution is allowed to mix at a speed of 910 rpm and tempering to 25 ° C. After tempering the solution, turn off the stirrer for a short time and add 5,000 + 0.001 g to the solution. CaCO ^,

Then simultaneously start the stopwatch and the stirrer »Attach a vacuumed flask to the outlet hole» After 5 minutes from the start of mixing, switch off this and observe the CaCO 3 and time. A part of the measuring vessel content is pumped into the Erlenmeyer flask. During the sedimentation we do not move the vessel, Oo Erlenmeyer flask further gives about 1 to 5 cm of HCl / 1: 1 / to dissolve CaCO 3,

3 J

Transfer the quantitative solution to a 250 cm volumetric flask and make up to the mark with distilled water. Pipette 50 cm of the sample from the volumetric flask and adjust the medium with approx. 5 cm of ammoniacal buffer to 10, and add the indicator Eriochromic black T to the vine red. With the Chelaton III M solution, the Chelatone III titration on a 50 cm Ca 2+ solution is about 1.4 cm in diameter, a so-called blank test.

In the same way and proceeding with the addition of an economical means. Prepare the dispersant solution. - 3 by dropping in water, 1 g of the reconstituted agent into 100 µm of 3 volumetric flask.

For the recalculation of the concentration per mg, we use 228,838 the following relationship: c v V 28.571 c 28.571 c and the concentration of the test compound in mg «l 3 In the volume of the solution of the test agent in cro-3 given to 350 cm KC1,

The composition to be examined is metered into a 1 cm 3 solution

by pipetting with stirring, add 5 g of CaCO 3 after equilibration to 25 ° C. Consumption of 0.1 M Chelatone III3 in cm &

Determination of 100% dispersing efficiency

It is similar to the blank, but after 5 minutes of mixing, immediately drain some of the solution into the Erlenmeyer flask so that no sedimentation occurs.

For example, the consumption of Chelatone III titration solution at 50 3 cm 3 of the Ca ** -containing solution is 48 cm;

Oiss-sequestration is calculated from relationships

with efficiency * in percent 100 s and 100 where i D, «dispersion-sequestering efficiency 3 V100” ° b3em θ · 1 M Chelaton III in cm corresponding to 100% dispersing-sequestering efficiency »volume of 0.1 M Chelatone III in cm with additional preparation. The results of the dispersing-sequestering efficacy determined according to the method described in Example 10 at 228-838 compared to surfactants: centr 10 rag with some Example aminoalcohol number moles of atylene oxide phosphorus content / wt% 0 u /% / foam /% / 1 monoethanolamine 12 8.4 20.0 0 2 monoethanolamine 20 5.7 17.3 0 2 monoethanolamine 30 4.0 31.0 0 4 diethanolamine 45 2.7 20.0 0 5 triethanolamine 5 12,0 28,1 0 6 monoisopropanolamine 30 1.4 26,0 0 7 triisopropanolamine 20 5,1 34,0 0 8 diethyl amine 1 8 4,0 14,2 0 9 dimethylaminoethanol 25 U7 15, 0 0 10 nonylphenol 10 13,5 280 11 sodium lauryl sulfate * - 2,5 458 Ί Ji. fatty alcohol C13 to C15 20 4,2 210 13 nonylphenol 3 ....... .........- 2x2 .. 63

I 11 228 838

The foaming determination is based on the foam height measurement of the test substance solution after foaming the solution in a measuring cylinder. and / or 3 trial porn

Volumetric flask 1000 ml

500 ml graduated cylinder with ground-glass stopper Millimeter splitter b / Chemical

Distilled water c / Test procedure A 1.0 g / L solution of the reagent in distilled water is prepared, from which 100 cnr is poured into a 500 crm graduated flask and sealed with a ground-glass stopper. The test solution is strengthened by inverting the cylinder 180 ° and sleeping for! at 50 ° C for at least 50 ° C, the height of the foam and the liquefied solution after 1 min. after completing the reinforcement d / Calculation vv

The foamability of the reagent is calculated from the equation: 100 (%) where P is the foamability and foam height in cmb the height of the uncoated solution in cm.

Claims

The dispersant and effervescent foaming agent is characterized in that it contains, as an active ingredient, from 3 to 50 moles of ethylene oxide, an oxyethylated aliphatic amino alcohol having 2 to 10 C atoms phosphated to a phosphorus content of 1.0 to 15% by weight. R £ D E T VY N S U U Tisk Print Moravské tiskařské závody, provoz 12, Leninova 21, Olomouc Price: 2,40 Kčs