RU1797987C - Device for burning hydraulic hydrogen sulfide-containing gas for production of sulfur - Google Patents

Abstract

Use:. In the production of sulfur from hydrogen sulfide-containing gases by burning them in gas, petrochemical and other industries, where hydrogen sulfide-containing gases are a by-product. The inventive device includes a prechamber with hydrogen sulfide gas and air inlets and a pinch, a refractory confuser, a prechamber equipped with an additional pinch installed at its outlet, the reaction chamber is equipped with a threshold installed after the pinch, and the pinch is made in the form of a half ring located in bottom of the reaction chamber. 1 ill.

Description

The invention relates to the production of sulfur from hydrogen sulfide-containing gases by burning them and can be used in gas, petrochemical and other industries, where hydrogen sulfide-containing gases are a by-product.

The drawing shows a device for burning hydrogen sulfide-containing gases to produce sulfur.

A device for burning hydrogen sulfide-containing gases to produce sulfur contains a prechamber 1 with a tangential air inlet 2 and an axial inlet of combustible gas 3, a burner 4, a refractory cone 5, a reaction chamber 6 with air inlets 7 and hydrogen sulfide-containing gases 8, pinch 9 and 10, a threshold eleven,

The prechamber 1 is installed close to the smallest cross section of the refractory confuser 5, behind which the reaction chamber 6 is installed, the tangential inlets 7 and 8 are axially made to the prechamber 1. Pinch 9 is located at the outlet of the prechamber 1, and pinch 10 is made in the form of a half ring and is located in the reaction chamber b which is provided with a threshold 11 set beyond pin 10. The threshold width is 131-395 mm. the length is not more than 50% of the distance from pin 10 to the end of the reaction chamber 6, the height is equal to or twice as high as pin 10. The ratio of the threshold and pin heights in the range (1-2): 2. The ratio of the diameter of the prechamber 1 to the smallest diameter of the base of the confuser 5 is 0.28-0.62, the ratio of the diameter of pinch 10 to the diameter of the reaction chamber 6 is 0.73-0.87, the ratio of the distance from pinch 10 to the end of the reaction chamber 6 is to the diameter cameras 0.32-0.71.

The device operates as follows.

Combustible gas from the inlet 3 enters the burner 4, where it is mixed with the air coming from the inlet 2 and ignited. The gas and air supply through the inlets 3 and 2 is controlled so that stable combustion occurs in the prechamber 1 without breaking the flame from the burner 4 and without flame penetration into this burner. The rotating gas stream, having hit the pinch 9, is partially reflected to the axis of the prechamber 1, ensures the recirculation of hot gases to the base of the torch and leads to intense ignition of the fresh combustible mixture.

When burning hydrogen sulfide-containing gas in the prechamber 1, the coefficient of excess air is maintained equal to 0.34-0.99. The air entering tangentially through inlet 7 cools the prechamber 1 and mixes it with hydrogen sulfide-containing gas in confuser 5. The mixture is ignited by the hot combustion products leaving the pre-chamber 1. The rotating flow of hot gases at the end of the reaction chamber bot side and end surfaces of pinch 10 and threshold 11 is partially reflected in the lower pressure region in the center of the reaction chamber b and along its axis returns to the lower pressure region - at the beginning of chamber 6. Mountain recirculation of combustion products from pinch 10 and threshold 11 at the beginning of chamber b, increases the temperature of the incoming gases and sharply accelerates combustion. The tangential air and gas supply to the inlets 7 and 8 ensures their intensive mixing in the confuser 5.

PRI me R. At the III stage of the Orenburg gas processing plant were

experimental studies of this device have been carried out.

2500 m / h of combustible gas through inlet 3 and 3000 m3 / h of air through inlet 2 are fed into

burner 4, at the outlet and inlets of which the mixture of combustible gas with air is ignited. Pinch 9 at the end of the prechamber ensures the recirculation of hot gases to the embrasure of the burner, which sharply intensifies the ignition of the fresh combustible mixture. 53,000 m3 / h of combustible gas and 63,000 m3 / h of air were supplied to the mixing chamber for mixing. Hot gases from the prechamber as well as recirculated gases from pinch and

the threshold in the furnace of the furnace itself, intensively mixed with the incoming combustible mixture, ignites it. the temperature in the furnace head rises to 1100 ° C. The concentration of sulfur-hydrogen in hot gas was 50-52%

by volume, the degree of conversion of hydrogen sulfide to sulfur vapor in the furnace (reaction) increased from 48.4 to 49.1%.

25

Claims (1)

The claims  A device for burning hydrogen sulfide-containing gases to produce sulfur, comprising a prechamber with air, combustible gas and burner inlets, a reaction chamber with hydrogen sulfide-containing gas and air inlets and pinch, a refractory confuser, characterized in that, in order to increase productivity by extracting sulfur and emission reductions sulfur compounds, it is additionally equipped with a clamp installed at the exit of the prechamber, and a threshold placed in the reaction chamber behind the clamp, made in the form of a half ring.