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Studying of process of decontamination of gasoil by hydrocarbonic couples
D OI: http://dx.doi.org/10.20534/AJT-17-1.2-105-107
Khudoyberganov Abrorjon Akbarovich, Bukhara refinery Deputy Chief Engineer for the implementation of innovative projects and technologies in production E-mail: abrorjon_@mail.ru
Saydakhmedov Shamshiddin Mukhtarovich,
Fergana oil refinery, Chief of Fergana oil refinery
Studying of process of decontamination of gasoil by hydrocarbonic couples
Abstract: In article results of pilot studies on use of kerosene fractions are given as the unpicking agent for decontamination of oil-gas condensate raw materials, change of density and kinematic viscosity, and also influence of the unpicking agent on quality ready production.
Keywords: pressure, temperature, kerosene, gasoil, water vapor, hydrocarbonic, gas condensate, distillation, water steam, light naphtha.
Development of the oil and gas processing and petrochemical industry at the present stage is characterized by considerable expansion of the range and products improvement of quality, increase in depth of oil refining, construction along with installations of big single power of modular low-tonnage installations of complex oil refining, gas and the gas condensate, allowing to receive wide scale of oil products taking into account needs for them oil and gas extraction areas [1; 2].
As a rule, oil and oil products divide by distillation into separate parts, each ofwhich is less difficult mix. Hydrocarbonic fractions in difference from individual connections have no constant temperature of boiling. They boil away in certain intervals of temperatures. Temperatures I began and the end of boiling depend on a chemical composition of fraction. Thus, the fractional composition of oil and oil products shows the contents in them the various fractions which are boiling away in certain temperature limits. This indicator has great practical value. On fractional composition of oil judge what oil products and in what quantities can be emitted from it, and the fractional composition of gasolines and other motor fuels characterizes their evaporability, completeness of evaporation, etc. For the purpose of creation of a demanded steam irrigation in distant-pasture section of columns, and also evaporations of low-boiling fractions of oil in practice widely apply distillation with supply of water vapor [1]. At input of water vapor in distant-pasture section the partsionalny pressure of vapors decreases and conditions under which liquid is as
though superheated that causes its evaporation (that is effect of water vapor similarly to vacuum) are created. The general consumption of water vapor entered into atmospheric columns of installations of distillation of oil makes 1.2-3.5, and in vacuum columns for fuel oil distillation — 5.8 % of masses. on overtaken raw materials. When using water vapor for distillation of oil there are following shortcomings: increase in expense of energy, increase of loading of columns on couples, deterioration of conditions of regeneration of heat in heat exchangers, increase in resistance and pressure increase in a column and other devices, flood of oil products and strengthening of corrosion of devices.
In this regard in recent years in world oil processing the tendency to existing restriction of application of water vapor and to transfer of installations on technology of dry distillation i. e. application of the hydrocarbonic steaming agent is shown.
Proceeding from the above, we collected model laboratory installation for carrying out experiments on decontamination of kerosene and gasoil fractions. Experiments are made in vitro Bukhara oil refinery to whom aviation fuel analyses Jet A-1 to an decontamination water vapor of stripping-columns and with an decontamination water vapor after stripping-columns are carried out. At creation of conditions of a temperature mode of stripping-columns experiments with application of light naphtha for an decontamination of kerosene fraction to stripping-columns [4] are in vitro made. The obtained experimental data are given in tab.1.
Section 7. Technical sciences
Table 1. - Results of analyses of Dzheta-1 kerosene before and after an decontamination water and hydrocarbonic ferry (light naphtha)
№ Name of indicators Kerosene Jet A-1 to stripping- column Kerosene Jet A-1 after a striping- column (decontamination with water vapor) Kerosene Jet A-1 after an decontamination from light naphtha
1. Density at 20 °C, kg/m 3 780 787 790
2. The content of water, about % 0.0 0.0 0.0
3. Contents fur of impurity, % 0.0018 0.002 0.0
4. The contents about sulfurs, % 0.09 0.07 0.094
5. Acidity, mg K0H/1000 cm 3 0.78 0.67 1.13
6. Flash temperature, °C 13 40 47
7. Copper plate — — —
8. Temperature turbidity, °C 3 a 3 a 1 a
9. Temperature hardening, °C 20.4 19.2 22.5
10. Kinematic viscosity at 20 °C, mm 2/sec. 26.8 27.48 25
11. Fractional structure:
I began boilings, °C 109 151 154
5 %, °C 121 158 164
10 %, °C 138 162 167
15 %, °C 144 165 169
20 %, °C 149 169 171
25 %, °C 155 172 173
30 %, °C 160 175 174
35 %, °C 163 178 175
40 %, °C 169 180 176
45 %, °C 172 182 177
50 %, °C 181 185 178
55 %, °C 183 187 180
60 %, °C 185 190 181
65 %, °C 187 192 182
70 %, °C 192 195 183
75 %, °C 195 198 186
80 %, °C 199 202 188
85 %, °C 203 206 190
90 %, °C 209 211 194
95 %, °C 217 218 199
Boiling end, °C 227 225 209
Exit, % 98.0 98.0 98.0
Rest, % 1.2 1.1 1.2
Losses, % 0.8 0.9 0.8
From table 1. is visible that kerosene density Jet A-1 before decontamination made 780 kg/m 3, after its decontamination with water vapor density changed on 787 kg/m 3, and decontaminations it with light naphtha this indicator made 790 kg/m 3. The content of water after decontamination with water vapor of 0.01 %, and this indicator was absent when process is carried out with light naphtha. The indicator of temperature of flash made 40 °C at decontamination with water vapor, and at
decontamination with kerosene fractions 44 °C. Height not smoking a tribe (GNP) of kerosene before decontamination made 20.4 mm, at decontamination with water vapor made 19.2 mm, after decontamination of light naphtha of 22 mm. Acidity of kerosene to stripping-columns of 0.78 mg. the K0H/100 cm 3, at decontamination with water vapor made 0.67 mg. K0H/100 cm 3 after decontamination of light naphtha is absent. Kerosene decontaminations Jet fraction A-1 by means ofwater vapor as the
Research of process of washing of fluorine from phosphor gypsum
unpicking agent at initial temperatures of boiling 158 °C was allocated 5 % of fraction, and at decontamination from light naphtha this indicator made 164 °C. The boiling end with water vapor made 225 °C, and about the ferry of light naphtha made 209°C. At the end of technological process the exit ofhydrocarbonic fractions when using by water vapor made 98 %, the rest of 1.1 %, and with use of light naphtha as the unpicking agent the exit of fractions made 98.0 %, the rest of 1.2 %. From the conducted pilot researches it is visible that kerosene decontamination Jet
A-1 with hydrocarbonic couples proves to the advantages at their use as the unpicking agent.
Thus, uses of light naphtha as the unpicking agent for kerosene decontamination Jet A-1 to the advantages, after decontamination of their density, temperature of flash increases and acidity decreases this results from the fact that as a part of ready to production doesn't remain easy fractions and is absent an amount of water, besides temperature too decreases, this indicator it is possible will see their temperatures of flash.
References:
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2. Technology of oil refining. In 2 parts. Part one. Primary oil refining/Under the editorship of O. F. Glagoleva and V. M. Kapustin. - M.: Chemistry, Colossus, 2006. - P. 331-345.
3. Manovyan A. K. Technology of primary oil refining and natural gas. Manual for higher education institutions. 2nd prod. - M.: Chemistry, 2001. - P. 138-140.
4. Salimov Z. S., Saydakhmedov Sh. M., Khudoyberganov A. A., Khurmamatov A. A., Hudayberdiyev A. A. Studying of process of an decontamination of kerosene fraction by hydrocarbonic couples//Oil processing Magazine and petrochemistry. - Moscow, 2012. - No. 9. - P. 10-13.
DOI: http://dx.doi.org/10.20534/AJT-17-1.2-107-111
Shamshidinov Israiljon Turgunovich, Candidate of technical science, associate professor, Associate professor of cathedral «Professional education (Chemical technology)»,
Namangan engineering-pedagogical institute, Uzbekistan
E-mail: israiljon2010@mail.ru
Mirzakulov Kholtura Chorievich, Doctor of technical science, professor, Professor of cathedral «<Chemical technology of inorganic substances»
E-mail: khchmirzakulov@mail.ru
Research of process of washing of fluorine from phosphor gypsum
Abstract: Results of clearing of phosphor gypsum from fluoric compounds by washing by its solutions a chamois, a mix of sulfuric and phosphoric acids, 30 % a solution of ammonium nitrate and water are resulted. The maximum degree of washing phosphor gypsum from fluorine is observed at use of 60 % of sulfuric acid, a mix of sulfuric and phosphoric acid, 30 % by a solution of ammonium nitrate. Thus degree of washing makes 95.0-97.0 %, and the fluorine contents in phosphor gypsum decreases to 0.10-0.17 %.
Keywords: phosphorite, extraction phosphoric acid, phosphor gypsum, defluorination, filtration, degree of washing.
Introduction fluorine. At achievement of full satisfaction of require-
At the average contents in extraction phosphoric ment of agriculture of Republic Uzbekistan in phosphor-acid (EPA) 1.2 % is fluorine, received of 716 thousand ic fertilizers (the requirement for phosphoric fertilizers t washed burnt phosphor concentrate of Central Kyzyl- makes 518 thousand t. 100 % of P2 05) on fields will be kum (CK), annually in soil is brought 8.59 thousand t of brought 34.36 thousand t fluorine.
