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Section 8. Chemistry
D OI: http://dx.doi.org/10.20534/AJT-16-9.10-76-79
Bekturdiyev Gulomboy Mavlonberdiyevich, Ph.D., Senior Researcher of Laboratory of Chemical Technology of Institute of general and inorganic chemistry of Uzbekistan Academy of sciences;
E-mail: bekturdiev2015@mail.ru Yusupov Farhod Maxkamovich, Doctor of technical science., Head of the Laboratory of Chemical Technology of Institute of general and inorganic chemistry of Uzbekistan Academy of sciences;
E-mail: f.yusupov@yandex.ru Kurbanov Elmurod Narzullayevich, Director of the "Mubareksky gas processing plant" Ltd., NHC "Uzbekneftegaz"
Nurmukhammadov Jaloliddin Shermuxammad ogli, Junior Researcher of Laboratory of Chemical Technology of Institute of general and inorganic chemistry of Uzbekistan Academy of sciences;
Yusupov Shaxzod Farhodovich Engineer of the "Shurtaneftegaz" Ltd., NHC "Uzbekneftegaz"
Synthesis of Sulphanole on the basis of low-molecular polythene SGCC
Abstract: For the first time the technology of obtaining technical sulphanole has been developed based on a local source of raw materials from Shurtan gas chemical complex (low molecular polyethylene) and semi-products of the chemical enterprises. There are studied the temperature influence, mass parities of reagents and duration (time) of reaction on the product outlet. In laboratory conditions tests of the derived novel samples of sulphanole were conducted at preparation of the facilitated drilling solutions.
Keywords: Sulphanole, sulfonation, oleum, drilling, surface active substance (SAS), low-molecular polyethylene (LMP), reagent, sulphonate s.
Introduction. During the independence of the Re- of sulpho groups they are solid or liquid substances.
public dramatically increased range of import substitu- Sulphonic acid is isolated from more water-soluble and
tion, export-oriented chemical reagents, as well as new organic solvents and identified as salts. On the basis of
principles and methods of their treatment were devel- the synthesis alkensulphonates by sulfonation of ole-
oped. As additives to drilling solutions for revelation fin with subsequent neutralization and hydrolysis with
of the productive formations, water-soluble anionic an alkaline, the mixture of sulphonic acid and sulpho-
surfactants — sulphanole is used. Of these, the great- nate isomers is obtained [1]. An important property
est practical importance are alkylbenzenesulphonates, of alkensulphonates is their high biodegradability in
alkanesulphonates, lignosulphonates, naphthalenesul- nature.
phonates, alkensulphonates, petroleum sulphonates Petroleum sulphonates are mainly produced by di-
and salts of sulphocarboxylicacids. Sulphonates are rect sulfonation of petroleum products (distillate and
organic compounds containing one or more groups residual oils) subsequent with purification and neu-
of SO3M, where M is general cation of metal, ammoni- tralization of the resulting sulphonic acid mixtures. The
um substituted ammonium. Depending on the amount composition of the sulphonate depends on the hydrocar-
and structure of the radical, cation type and number bon feedstock and the method of sulfonation.
Synthesis of Sulphanole on the basis of low-molecular polythene SGCC
It should be noted that alkaline earth metal salts of amines are of considerable importance among the oil-soluble petroleum sulphonates [2; 3]. World production of alkyl benzene (sulphonate) was 2580 thousand ton (1987). However, more than 80% ofwhich is consumed for the production of domestic detergents. Besides, the amount of sulphanole consumption increases in the Republic each year.
Objects and methods. The objects of research are unsaturated aliphatic mixture of sulfonation waste and low-molecular polyethylene and their sulfonation. The methods of research is the pH-metry, viscometry, comparative analysis methods.
Results and discussion. It is known that sulfonation of unsaturated aliphatic compounds, depending on the reaction conditions, sulpho groups is bonded on the double
bond or replaces a hydrogen atom one ofthe carbon atoms forming the double bond. The latter is actually sulfonation process. As a result ofthe action of chlorine sulphonic acid at a temperature of about 0 °C alkene sulphonic acid is formed on higher olefins. Alkenes easily sulfonated with oleum according to the following overall reaction:
RCH=CH2 + H2SO4 = RCH (CH3)OSO3H (R=C12 - C20)
Technical sulphanole is to a series of anionic surfactants, used in oil and gas production to increase oil, gas and condensate return of bed by processing bottom-hole zones.
We first synthesized technical sulphanole and developed its technology based on local chemical intermediate product. In the technology housing of Institute of General and Inorganic Chemistry under Academy of Sciences of the Republic of Uzbekistan a pilot plant producing sulphanole has been developed (Figure 1).
Fig. 1. Flow sheet of obtaining technical sulphanole: 1. The hopper; 2. Sulfurator; 3. Refrigerator; 4. Neutralizer; 5. Pump; 6. Separator
We have developed a method of synthesis sulphanole polyethylene subsequent by neutralization (with (Table 1) by sulfonation fractions of low-molecular Na2CO3 * 10H2O, Na2CO3 and urea).
Table 1. - Data on synthesis sulphanole
№ Waste composition isolated from LMP Molar ratio of reagents (mole): LMP sulfonating agent: additives Sulfonating agent Reaction tempe-rature (°C) Reaction duration (hour) Yield (%)
1 2 3 4 5 6 7
1 The first fraction 10:1:0.01 Oleum (40%) -5-0 6 24
2 The second fraction 10:1:0.01 Oleum (40%) -5-0 6 51
H2SO4 (98%) -5-0 6 39
1 2 3 4 5 6 7
H2SO4 (98%) -5-0 6 61
3 The third fraction 10:1:0.01 Oleum (40%) -5-0 6 78
Oleum (40%) -5-0 5 73
4 The third fraction 10:1:0.01 H2SO4 (98%) 0-5 6 24
Oleum (40%) 0-5 6 55
Oleum (40%) -10-(-5) 5 78
5 10:2:0.01 Oleum (40%) -5-0 5 78
As it is seen from the data in Table 1, a result of sulph-anole synthesis from waste of LMP by sulfonation 40% of oleum separated from fraction 3, the weight ratio of substances 10: 1: 0.01, temperature -5-0 °C, the reaction continuing time 6 hours was the highest yield.
Sulphanole synthesized readily dissolved in water and reveals anion-active properties; the surface tension ofits is 1.5% aqueous solution = 41.0 - 42.5dun/cm2, creates a volume-stable foam (h;;0125%_100ml = 7.0 -8.4 cm)
and a hydrophilic-lipophobic balance of sulphanole obtained does not exceed 0.6. Thus, sulphanole obtained is a light brown liquid. The reaction duration is 6 hours temperature: -5-0 °C. Laboratory test results of sulphanole (OS series) for the preparation of facilitated drilling fluids are presented in Tables 2 and 3. To prepare the drilling fluids two types clay powder — bentonite: PBG brand and brand PBMB were used.
Table 2. - Composition and technological properties of the drilling solutions (bentonite grade PBG)
Process-dependent parameters
Drilling solution's composition Density, Conditional vis- Water yeild, Crust, PH
g/cm3 cosity, sec. em 3/30 min. mm. pH
1 Initial solution 1.07 33 6 0.4 10
2 Initial solution + 3.5% sulphanole OS-2 0.75 80 6 0.4 11
3 Initial solution + 3.5% sulphanole OS-3 0.80 38 6 0.4 10
4 Initial solution + 3.5% sulphanole OS-7 0.80 42 4 0.3 11
5 Initial solution + 7% sulphanole OS-7 0.70 42 4 0.3 11
6 Initial solution + 3.5% sulphanole OS-8 0.70 70 4 0.3 11
As it is seen from Table 2 sulphanole OS-8 and OS i. e. adding sulphanole observed improvement of some reduced density drilling fluid to 0.7 g/cm 3, while increas- physical and chemical characteristics of the drilling fluid. ing its conventional viscosity from 33 to 70 and 80 sec.,
Table 3. - Composition and technological properties of the drilling solutions (bentonite grade PBMB)
Drilling solution's composition Process-dependent parameters
Density, g/cm3 Conditional viscosity, sec. Water yeild, cm 3/30 min. Crust, mm. pH
1 Initial solution 1.09 36 6 0.4 10
2 Initial solution + 3.5% sulphanole OS-2 0.75 53 6 0.4 11
3 Initial solution + 3.5% sulphanole OS-3 0.76 37 6 0.4 10
4 Initial solution + 3.5% OS-3 + 50 g of clay PBMB 0.90 48 6 0.4 11
5 Initial solution + 3.5% sulphanole OS-7 0.75 47 5 0.3 11
6 Initial solution + 7% sulphanole OS-7 0.70 47 5 0.3 11
7 Initial solution + 3.5% sulphanole OS-8 0.70 56 5 0.3 11
On the basis of laboratory test all the samples sulphanole obtained reduced the density of drilling fluids, which are listed in the above tables. A simple way to
obtain technical sulphanole and low cost allow to efficiently introduce it in production, as well as to use it in drilling wells for oil and gas.
Investigation of copper, nickel (II) and iron (III) ions sorption on sir by using FTIR and DRS methods
Conclusion defined as following: reaction temperature was studied,
Thus, the import-substituting sulphanole has been initial substance and reaction time and the influence of
synthesized based on local raw materials and intermedi- the sulfonating agent to yield. ates. The optimal conditions for the synthesis have been
References:
1. Shexter Yu. N., Kreyn S.E., Poverxnostno-aktivnie veshestva iz neftyanogo sirya. M:., 1971, 112-116 p.
2. Shexter Yu.N., Kreyn S.E., Teterina L. N., Maslorastvorimie poverxnostno-aktivnie veshestva. M., 1978, 224-226 p.
3. Poverxnostno-aktivnie veshestva. Spravochnik. pod red. A. A. Abramzona i G. M. Gayevogo. L. Ximiya, 1979. 376 p.
DOI: http://dx.doi.org/10.20534/AJT-16-9.10-79-82
Daminova Shahlo Sharipovna, Tashkent Chemical Technological Institute, Department of "Technology of silicate materials and rare precious metals",
Scientific Researcher E-mail: daminova-sh@mail.ru Kadirova Zukhra Chingizovna, Tashkent Chemical Technological Institute, Center of Excellence,
Dr. Engineering, PhD in Chemistry, E-mail: zuhra-kadirova@yahoo.com Sharipov Kasan Turabovich, Tashkent Chemical Technological Institute, Department of "Technology of silicate materials and rare precious metals",
Professor
E-mail: sharkhas@yandex.ru
Investigation of copper, nickel (II) and iron (III) ions sorption on sir by using FTIR and DRS methods
Abstract: The solvent impregnated resins (SIRs) based on Porolas resin impregnated with diisipropyl-dithiophosphoric acid were studied by Fourier transform infrared (FTIR) and electronic diffuse reflectance spectroscopic (DRS) methods. Physical sorption of diisopropyldithiophosphoric acid on macroporous Porolas resin in impregnation and sorption of metal ions on SIR were confirmed. The prepared SIR can be very useful for extraction of metals from hydrometallurgical solutions.
Keywords: Solvent impregnated resin, dialkyldithiophosphoric acid, infrared spectroscopy, electronic spectroscopy.
1. Introduction
Organophosphorus compounds are well known agents for impregnation of polymeric sorbents used for sorption ofmetal ions [1, 174-175]. Literature describes liquid phase sorption of Pb, Cd, Cu and Hg (II) ions by dialkyldithiophosphorous acids without detailed investigation of solid phase and effects of solid phase in solvent impregnated resins (SIR) [2, 1641]. The solvent impregnated resins (SIR) can be modeled as a "liq-
uid complexing agent dispersed homogeneously in a solid polymeric medium" [3, 353]. The impregnated should behave as in the liquid state but exhibit strong affinity to the matrix. It is known different acidic organophosphorus ex-tractants: di (2-ethylhexyl)phosphoric acid (DEHPA) [4, 126] used for extraction of Zn, Cu and Cd (II) [5, 131], V (IV) [6, 109], La and Ce (III) [7, 511]; di (2-ethylhexyl) dithiophosphoric acid (DEHTPA) [8, 201] applied for extraction of Pd (II) [9, 545], Cu [10, 149].
