Method of hydrocarbon raw materials decontamination from sulphur and/or sulphur compounds

FIELD: organic chemistry.

SUBSTANCE: invention refers to hydrocarbon raw materials decontamination from sulphur compounds and can be applied in oil-processing industry. Described hydrocarbon raw materials decontamination from sulphur and sulphur compounds includes oxidation at contact of hydrocarbon raw materials with process reagent, mixture separation resulted from this contact with decontaminated hydrocarbon raw materials, before oxidation hydrocarbon raw materials are treated with, negative electromagnetic field and after oxidation with oxygen as process reagent hydrocarbon raw materials flow goes heavily stirred water containing reagent in proportions to hydrocarbon raw materials within 1:50. Then mixture flow is dispersed and soothed before separation and additional selection of released gas and sediment. Technological effect is simplification of hydrocarbon raw materials decontamination process.

EFFECT: simplification of hydrocarbon raw materials decontamination from sulphur and sulphur compounds.

5 cl, 1 dwg, 1 ex

 

The proposal relates to a method of purification of hydrocarbons from sulfur compounds and can be used in the oil industry.

Known "Method of Hydrotreating diesel fuel" (A.S. No. 1227651, C10G 45/08, publ. Bull. No. 16 from 30.04.1986 g) by mixing raw materials with concentrate alkenovich and aromatic hydrocarbons and processing the resulting mixture with hydrogen at elevated temperature in the presence of aluminoborosilicate catalyst, the hub alkenovich and aromatic hydrocarbons using a residual product of the catalytic purification of gasoline with an initial boiling point 125°and With boiling 95% vol. up to 360°that was mixed in the amount of 0.5 to 3.0% by weight of the feedstock.

The disadvantages of this method are:

- the use of expensive components as catalyst;

- the complexity of delivering the necessary amount of residual catalytic purification of gasoline with an initial boiling point 125°and With boiling 95% vol. up to 360°C;

- loss of use on an industrial scale.

Also known "Method of production of low-sulfur diesel fuel (patent RU №2005765, C10G 45/04, publ. Bull. No. 1 from 15.01.1994, by Hydrotreating diesel fractions at elevated temperature in the presence of aluminoborosilicate the first catalyst, using layer aluminoborosilicate catalyst with a diameter of 3.2-4.0 mm in a mixture with elemental sulfur and Hydrotreating carried out additionally in the presence of consecutive layers of oxide zeolite catalyst with a diameter of 2.0-3.2 mm and the oxide aluminoborosilicate catalyst, taken in a mass ratio of 1:1:1.3 to 8.0 and pre-activated in the environment of the hydrogen-containing gas at 350-400°C.

The disadvantages of this method are:

- the use of expensive components as catalyst;

- complexity and high cost of the process of granulation, activation in the environment of the hydrogen-containing gas at 350-400°and keeping the required ratio during the whole process;

- loss of use on an industrial scale.

The closest in technical essence and the achieved result is a "Method of purification of hydrocarbons from sulfur compounds (patent RU NO. 2166530, C10G 27/00, publ. Bull. No. 13 dated 10.05.2001 year), including their oxidation when contacting the hydrocarbon feedstock with a working reagent containing transition metal ions in oxidation States higher than their minimum degree of oxidation, separation of the mixture obtained by contacting a hydrocarbon feedstock with the working reagent with the teachings purified hydrocarbons and spent working reagent the working reagent further comprises ions of at least one metal and/or metal selected from the group of non-transition metals, including copper, lead, tin, gold, and/or their salts deposited on the surface of the sorbent.

The disadvantages of this method are:

- the use of expensive components and their exact dosing with the sulfur content in the hydrocarbon feedstock, which also requires a lot of time and money;

- loss of use on an industrial scale.

The technical task of the invention is to simplify and cheapen the application of the method by reducing the need for costly components, their preparation and use in an industrial scale.

The technical problem is solved by a method for purification of hydrocarbons from sulfur and/or sulfur compounds, including their oxidation when contacting the hydrocarbon feedstock with the working reagent, separation of the mixture obtained by contacting a hydrocarbon feedstock with the working reagent with the processed hydrocarbons.

What's new is that before oxidation of hydrocarbons is treated with a negative magnetic field, and after oxidation, where the working agent used oxygen (volume atmosphere the m pressure at a temperature of 20° (C)in the flow of hydrocarbons served with active mixing a hydrogen-containing reagent in a volumetric ratio of hydrocarbon raw materials, not exceeding 1:50, then the flow of the mixture is dispersed and calm before the split and an additional selection of the emitted gas and sludge.

New is also that as the hydrogen-containing reagent water used.

New is also that as the hydrogen-containing reagent used hydrogen.

New is also that the dispersion make and solace produce more than one time.

New is also the fact that hydrocarbons handle negative pulsed electromagnetic field.

The drawing shows a schematic diagram of an installation for implementing this method.

The method is as follows.

Hydrocarbons (e.g. diesel fuel) is passed through the installation (see drawing), since the ionizer 1, where it is processed negative constant or pulsed electromagnetic field with a peak voltage of more than 50 kV. In the sulfur and sulfur compounds are ionized negative potential, which greatly accelerates the process of oxidation. Then in the thread on the straight section 2 hydrocarbons injected dry oxygen, which is actively enters into chemical reaction with ions ser and sulfur compounds with active heat, which can be selected and subsequently used to maintain the temperatures of all parts of the installation. Further, the flow speed and spin in the constriction 3, the output of which is fed hydrogen-containing liquid (e.g. water) or dry (for example, hydrogen, the volume of which is measured at atmospheric pressure and a temperature of 20° (C) raw materials in volumetric proportions, exceeding 1:50, by volume of the pumped material. In the hydrocarbon feedstock is actively mixed with a hydrogen-containing raw material with the mixture. Next the mixture to dispersion (reduction of flow and intensive mixing) enters the pipe 4 with the side channels, the total area of which is to reduce the flow resistance is approximately equal to the bore of the socket 4. The diameter of each channel of the nozzle 4 is selected from the viscosity of hydrocarbons: for petrol and diesel is about 1 mm, for heavy oil up to 1.6 mm for bitumen - up to 2 mm When the dispersion of the chemical processes in the interaction of oxides of sulfur and hydrogen-containing raw materials to produce volatile sulfur acid significantly accelerated. After dispersion, the mixture is fed to the extended section 5 in which the flow velocity of the mixture decreases and becomes laminar regime. If necessary, the process of dispersion in pipe 4' and solace in EXT the NII 5' repeats. The number of repetitions depends on the amount of sulfur and/or sulfur compounds: 1.2% one time is enough, up to 2% - two times, up to 3% - three times more than 3% - four times. All these operations in this installation at positive temperature is spent not more than 50 seconds. The mixture enters the tank 6, where volatile sulfurous acid included in the reaction with chemically active substances in this mixture and/or decomposed with obtaining insoluble salts, water, hydrogen and hydrogen sulfide. Insoluble salt, water and sludge present in the hydrocarbon feedstock, accumulate in the form of sediment in the lower part of the vessel 6, where the pipeline 7 is periodically selected. Gas accumulates in the upper part of the vessel 6, where it is periodically selected by the pipeline 8. Purified from sulfur and/or sulfur compounds distilled hydrocarbons are selected through a pipeline 9 slightly below the level of hydrocarbons in the vessel 6.

An example of a specific implementation.

Diesel fuel with a sulfur content of 2.2% drove through the installation. When passing through the ionizer sulfur captured negative charges (S-and S-2). Then in the thread on the straight section 2 hydrocarbons introduced under pressure of dry oxygen (O2), which actively chemically reacts with ions of sulphur oxide from the market (SO 2). Further, the flow speed and spin in the constriction 3, the output of which is fed water in a volumetric ratio that exceeds 1:50, by volume pumped diesel fuel. In result, the fuel is actively mixed with water to form a mixture. Next the mixture to dispersion (reduction of flow and intensive mixing) enters the pipe 4 with the side channels with a diameter of 1 mm When the dispersion of the chemical processes in the interaction of oxides of sulfur and water from getting unstable sulphurous acid (H2SO3) significantly accelerated. After dispersion, the mixture is fed to the extended section 5'in which the flow velocity of the mixture decreases and becomes laminar regime. The process of dispersion in pipe 4' and solace in the extension 5' is repeated two more times. All these operations in this installation at a temperature of 25°spent no more than 25 seconds. The mixture enters the tank 6, where volatile sulfurous acid included in the reaction with chemically active substances in this mixture, and/or mixed with the receipt of insoluble salts of sulfites and sulfates), water (H2O), hydrogen (H2), and hydrogen sulfide. Insoluble salt, water and sludge present in the diesel fuel, accumulate in the lower part of the vessel 6, where the pipeline 7 is taken away. Gas accumulates in the upper part of the vessel 6, where p is logicheskie taken through the pipeline 8. Purified from sulfur settled (at least two hours - the time the tank is filled to the required level) diesel pick through the pipeline 9 is slightly below the level of hydrocarbons in the vessel 6. As a result of such processing, the amount of sulfur in diesel fuel has decreased to 0.06%.

Also were tested in similar conditions, where the hydrogen-containing substances are used hydrogen (H2). As a result of such processing, the amount of sulfur in diesel fuel has decreased to 0.05%.

This method greatly simplifies, speeds up and reduces the cleaning process hydrocarbons from sulfur and sulfur compounds that can be used on an industrial scale.

1. The method of purification of hydrocarbons from sulfur and/or sulfur compounds, including their oxidation when contacting the hydrocarbon feedstock with the working reagent, separation of the mixture obtained by contacting a hydrocarbon feedstock with the working reagent with getting purged of hydrocarbons, characterized in that before the oxidation of hydrocarbons is treated with a negative magnetic field, and after oxidation, where the working agent is used, the oxygen in the stream of hydrocarbons served with active mixing a hydrogen-containing reagent in volumetric proportion to uglevodorodno the mu raw materials, not exceeding 1:50, then the flow of the mixture is dispersed and calm before the split and an additional selection of the emitted gas and sludge.

2. The method according to claim 1, characterized in that as the hydrogen-containing reagent water used.

3. The method according to claim 1, characterized in that as the hydrogen-containing reagent used hydrogen.

4. The method according to claim 1, characterized in that the dispersion make and solace produce more than one time.

5. The method according to claim 1, wherein the hydrocarbon feedstock is treated with a negative pulsed electromagnetic field.



 

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