SU1404518A1 - Method of purifying hydrocarbon materials from organosulfuric substances - Google Patents

Abstract

The invention relates to petrochemistry, in particular, to the purification of hydrocarbon feedstock from organic sulfur compounds. The goal is to increase the degree of cleaning and expansion of the range. Purification is carried out by the adsorption of Kis relative to phyllipsite containing as the metal oxide 0.91-, 1.95 wt.% Manganese oxide. This phillipsitis has high rates of structural characteristics. The method allows to obtain a significant technical and economic effect. 6 tab. About iS

Description

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The invention relates to methods for the purification of hydrocarbon feedstocks, including gases, paraffinic hydrocarbons or gasoline from a fraction of organic sulfur compounds, namely sulphides and mercaptans, and can be used in the petroleum refining and petrochemical industries.

The purpose of the invention is to increase the degree of purification of hydrocarbons from mercaptans and sulphides and expand the range of adsorbents used in the cleaning process.

Acid-activated phillipsite is treated with 1N, a solution of manganese chloride until the content of manganese oxide in the adsorbent is 0.91-1.95 wt.%.

The process of purification of paraffinic hydrocarbons or gasoline fraction from organic sulfur compounds is carried out at 0-40 ° C and pressure of 0-24 atm. Activation temperature hell -. sorbent ZSO-SOO C.

Example 1 The initial phillipsite fractions of 0.4-1.0 mm and 2 n, hydrochloric acid solution in a ratio of 1:10 are loaded into the flask, the treatment is carried out at the boiling point of the solution for 1 hour. Then the phillipsitis is washed to neutral with water, dried in a water bath to an air-dry state.

Acid-processed phyllipsite and 1N are loaded into the flask. manganese chloride solution with a ratio of sorbent and solution of 1: 6. The activation is carried out at the boiling point of the solution for 2 hours. Then the sorbent is washed of C1 ions and dried in a water bath to an air-dry state. The resulting sorbent is subjected to heat treatment at 250-300 C. The boundary values of the content of manganese oxide in acid-treated phillipsite are given in Table 1.

A flask is charged with 2 g of activated filipsite and 50 ml of n-hexane containing ethyl mercaptan. The mixture is stirred vigorously at room temperature. The initial and purified n-hexane is analyzed for the content of mercaptan sulfur by means of potentiometric titration. The results of the experiment are given in table 2.

Example 2. Phillipite activation of manganese chloride is carried out as in example 1.

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The flask is charged with 2 g of activated phillipsite and 50 ml of n-hexane containing dimethyl sulfide. The mixture is vigorously stirred and settled at room temperature. The initial and purified n-hexane is analyzed for sulfide sulfur content by potentiometric titration. The results of the experiment are given in table.3.

Method 3. Phillipsite was activated with manganese chloride as in Example 1.

The flask is charged with 2 g of activated phillipsite and 50 ml of naphtha gasoline containing mercaptan and sulfide sulfur. The mixture is vigorously stirred and settled at room temperature. Initial and purified straight gasoline is analyzed for the content of mercaptan and sulfide sulfur by potentiometric titration. The results of the experiment are given in table 4.

Analysis of the degree of purification of paraffin hydrocarbons or gasoline fraction from the organic sulfur compounds shows that according to the proposed method, compared with the known degree of purification increases 1.4 times for mercaptans (Table 2) and 1.2 times for sulfides ( Table 4).

Example 4. The activation of phillips and manganese chloride was carried out as in example 1.

Test conditions for the purification of natural gas from organic sulfur compounds.

Adsorption: natural gas linear velocity 3 m / h; the sulfur content in the source gas is 300-550 mg / m; the skip concentration of mercaptan sulfur 36 temperature is 30+ + 5 ° С; pressure 4.8-5.0 MPa; the height of the layer of sorbent O, 15m.

Regeneration: temperature 250-350 ° C.

Natural gas containing 300– 550 mg / m of mercaptan sulfur, at a speed of 3 m / h, is fed to a plant filled with activated phylipsite. The source and purge gas is analyzed for mercaptan sulfur content. The results of the experiment are given in table.5.

From the results shown in table 5, it follows that the proposed

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The method allows to obtain a higher dynamic capacity of the sorbent for mercaptan sulfur as compared with the known.

The data of table 6 show that phillipsite activated by manganese chloride has higher indicators in structural characteristics compared with the known.

The proposed purification method can be used in the oil refining and petrochemical industries for purifying natural and associated gases from mercaptans and sulphides, liquefied petroleum gases, a wide fraction of light hydrocarbons, pantane and hexane gas from other petroleum refining products. and gas condensate. Using pred8

The method used in the purification processes of these types of coal raw materials from mercaptans and sulphides by increasing the degree of purification yields a significant technical and economic effect.

Claims (1)

Invention Formula The method of purification of hydrocarbon feedstock from organosulphuric compounds by their adsorption by oxygen-activated phillipsite containing metal oxide, characterized in that, in order to increase the degree of purification and expansion of the range, the process is carried out in the presence of phillipite containing 0.91-1 as metal oxide , 95 wt.% Oxide Mar-; ganza  about c to  about " about s SG § about o a ( s about S 1L g m ABOUT s about "about about t "about table 2 1404518 The content of Nercaptan sulfur in gasoline, wt.% Before cleaning After cleaning  A 5 9,122 0.037 0.041 69.67 1.700 0, M4-0.036. 68.42. 1.560 66.39 1.620 0.1U0.03965,79,500 10 Continuation of table 4 Table 5 Table 6