US 2015/0352482 A1 · Method for treating sulphur-containing exhaust gases and device thereof

Abstract

A method for treating sulfur-containing exhaust gases is provided, comprising the following steps: step i): mixing the sulfur-containing exhaust gases, air, and a hydrocarbon fuel, and controlling a reaction between the air and the hydrocarbon fuel therein, to obtain a procedure gas stream comprising the sulfur-containing exhaust gases, hydrogen, and carbon oxides; step ii): controlling a hydrogenation reaction between the hydrogen contained in the procedure gas stream and a sulfur-containing substance in the sulfur-containing exhaust gases, to obtain hydrogenated tail gases containing hydrogen sulfide; and step iii): absorbing the hydrogen sulfide contained in the hydrogenated tail gases with an absorbing agent to obtain purified tail gases.

Claims16

Dependent claims

A method for treating sulfur-containing exhaust gases, comprising the following steps:

step i):
mixing the sulfur-containing exhaust gases, air, and a hydrocarbon fuel, and controlling a reaction between the air and the hydrocarbon fuel therein, to obtain a procedure gas stream containing the sulfur-containing exhaust gases, hydrogen, and carbon oxides, wherein the procedure gas stream is heated by heat released in the reaction between the air and the hydrocarbon fuel;
step ii):
controlling a hydrogenation reaction between the hydrogen contained in the procedure gas stream and a sulfur-containing substance in the sulfur-containing exhaust gases, to obtain hydrogenated tail gases containing hydrogen sulfide;
and
step iii) absorbing the hydrogen sulfide contained in the hydrogenated tail gases with an absorbing agent to obtain purified tail gases.

3 more elements

A device for treating sulfur-containing exhaust gases, comprising:

an online heating furnace, used for mixing the sulfur-containing exhaust gases, air, and a hydrocarbon fuel, and controlling a reaction between the air and the hydrocarbon fuel therein, to obtain a procedure gas stream containing exhaust gases generated during liquid sulfur degassing, hydrogen, and carbon oxides, wherein the procedure gas stream is heated by heat released in the reaction between the air and the hydrocarbon fuel;
a hydrogenator in communication with the online heating furnace, used for receiving the procedure gas stream from the online heating furnace, and controlling a hydrogenation reaction between the hydrogen contained in the procedure gas stream and a sulfur-containing substance contained in the sulfur-containing exhaust gases generated during liquid sulfur degassing in the presence of a hydrogenation catalyst, to obtain hydrogenated tail gases containing hydrogen sulfide;
and
an absorbing tower in communication with the hydrogenator, used for receiving the hydrogenated tail gases containing hydrogen sulfide exiting from the hydrogenator, wherein the hydrogen sulfide contained in the hydrogenated tail gases is absorbed by an absorbing agent filled in the absorbing tower, to generate purified tail gases and an absorbing liquid absorbed with hydrogen sulfide.

1 more element

Dependencies are inferred from the claim text.

Method for treating sulphur-containing exhaust gases and device thereof

Life of this patent

Method for treating sulphur-containing exhaust gases and device thereof

Life of this patent

Abstract

Claims16