SU1445765A1 - Method of cleaning gases from hydrogen sulphide and sulphuric anhydride - Google Patents

Abstract

The invention relates to the purification of gases from sulfur compounds and can be used in the oil refining and gas producing pro- tections. The goal is to reduce the loss of medium reagents. S0, j-containing gases are also passed through distillate scavengers with a boiling range of 190-360 s, obtained from sulfur and high-sulfur oils, which have absorption and catalytic properties, neither the reaction of 50 or HjS. The method provides gas purification from 80% and 97-99%, while the purity of the sulfur obtained reaches 99.9%. 1 hp f-ly 2table

Description

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The invention relates to the purification of gases from sulfur compounds and can be used in the oil refining, gas production and other industrial fields.

The purpose of the invention is to reduce the loss of medium reagents.

PRI im p Oil distillates with a boiling range of 190-360 ° C are obtained from sulfur and high-sulfur oils by direct distillation of oil or by coking of oil residues and tar. In terms of basic physicochemical parameters (except for sulfur content), these distillates are close to diesel fuels, however, in terms of sulfur content, they do not meet the existing standards without appropriate hydrotreating.

Into an absorption column containing 50 ml of prong distillate with a boiling range of 190-360 ° C, obtained from the oil of the Arlansky field, 20 liters of gas are passed in for 30 minutes at 20-25 ° С, containing,%: Vgt;

 2 and N 97. Waste

gases are analyzed for the content of and SOj, as well as hydrocarbons by GLC. The content and SO 2 in the purified gases are also analyzed by volumetric methods; after passing the gases through the absorption flasks with 10% NaOH solution iodometrically and

solution (CN) 6 at pH 9-10 in the presence of iron (II) dimethylglyroxymate indicator. The degree of gas purification 97%. Reproducible sulfur after washing with acetone (based on 1 g of sulfur, 9-10 ml of acetone), according to the elemental analysis, is characterized by a purity of .99.9%.

In tab. 1 shows the results obtained in the purification of gases using distillates with other pre-

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affairs of boiling under the conditions of the specified example. .

According to the results given in table. 1, it can be seen that in the proposed method, the loss of the hydrocarbon absorber is sharply reduced.

It is possible to implement the proposed method at lower temperatures, however, the lower temperature range is limited by energy costs, and the upper temperature limit is the formation of molten sulfur (tnn - 1t2,).

The data on the comparative characteristics of the catalytic activity of various products and industrial products of oil refining for the liquid-phase Claus reaction are given in Table. 2

From the data given in table. 2 that the distillates obtained from sulfurous and highly sulfuric oils have the greatest catalytic activity.

Claims (2)

1. A method for purifying gases from hydrogen sulphide and sulfur dioxide by reacting them to produce elemental sulfur in a medium containing a hydrocarbon absorber and catalyst — heteroatomic sulfur compounds, characterized in that In order to reduce the loss of medium reagents, distillates of sulphurous and sour sulphurous oils with a boiling range of 190-360 ° C containing 1.75-2.65 wt.% of a mixture of petroleum sulphides and nitrogen-containing compounds are used as a medium. 2. Method POP1, characterized in that the interaction of hydrogen sulfide and sulfur dioxide is carried out at 20-100 ° C. Table 1 20-25 97.0 99.9 None 50 98.0 99.8 0.001 " NSO - petroleum sulfoxides. PGK - steam gas condensate. Continuation of table 1 table 2 0.025 0.053 290 -0.038 576.0 I4A-57656 Continuation of table 2