Method and apparatus for treating a sulfur dioxide containing stream by hydrogen sulfide in aqueous conditions

A method, comprising:

• receiving a sour acid gas stream at a splitter, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide:
• operating the splitter to split the sour acid gas stream into a first gas fraction and a second gas fraction;
• operating a liquid-gas contactor reactor to:
• receive a tail gas stream comprising sulfur dioxide;
• absorb sulfur dioxide in a chilled first water stream to produce chilled water comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• and
• contact the second gas fraction with the chilled water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• output a second water stream comprising sulfur;
• operating a filtration unit to remove the sulfur from the second water stream and output a third water stream;
• and
• recycling the third water stream to produce the chilled first water stream.

A system comprising:

• a splitter operable to receive a sour acid gas stream and split the sour acid gas stream into a first gas fraction and a second gas fraction, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide;
• a liquid-gas contactor operable to receive a tail gas stream comprising sulfur dioxide and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• a liquid-gas reactor operable to contact the second gas fraction with the chilled second water stream comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur and output a third water stream comprising sulfur;
• and
• a filtration unit operable to remove sulfur from the third water stream and output a fourth water stream, wherein the fourth water stream is recycled to produce the chilled first water stream.

A method, comprising:

• receiving a sour acid gas stream at a splitter, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide:
• operating the splitter to split the sour acid gas stream into a first gas fraction and a second gas fraction;
• operating a liquid-gas contactor to receive a tail gas stream comprising sulfur dioxide and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• operating a liquid-gas reactor to contact the second gas fraction with the chilled second water stream comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur and output a third water stream comprising sulfur;
• operating a filtration unit to remove the sulfur from the third water stream and output a fourth water stream;
• and
• recycling the fourth water stream to produce the chilled first water stream.

A system comprising:

• a splitter operable to receive a fuel gas stream and split the fuel gas stream into a first gas fraction and a second gas fraction, the fuel gas stream comprising hydrogen sulfide;
• a liquid-gas contactor operable to receive a flue gas stream comprising sulfur dioxide and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• a liquid-gas reactor operable to:
• contact the second gas fraction with the chilled second water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• output a third water stream comprising sulfur;
• and
• output a gas stream to a gas turbine, the gas stream comprising less than 10 ppm hydrogen sulfide;
• a filtration unit operable to remove sulfur from the third water stream and output a fourth water stream, wherein the fourth water stream is recycled to produce the chilled first water stream.

A method, comprising:

• receiving a fuel gas stream at a splitter, the fuel gas stream comprising hydrogen sulfide:
• operating the splitter to split the sour acid gas stream into a first gas fraction and a second gas fraction;
• operating a liquid-gas contactor to receive a tail gas stream comprising sulfur dioxide and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• operating a liquid-gas reactor to:
• contact the second gas fraction with the chilled second water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• output a third water stream comprising sulfur;
• and
• output a gas stream to a gas turbine, the gas stream comprising less than 10 ppm hydrogen sulfide;
• operating a filtration unit to remove the sulfur from the third water stream and output a fourth water stream;
• and
• recycling the fourth water stream to produce the chilled first water stream.

A system, comprising:

• a splitter operable to receive a sour acid gas stream and split the sour acid gas stream into a first gas fraction and a second gas fraction, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide;
• a sulfur furnace operable to produce a gas stream by the combustion of sulfur, the gas stream comprising sulfur dioxide;
• a liquid-gas contactor reactor operable to:
• receive the gas stream comprising sulfur dioxide from the sulfur furnace;
• absorb sulfur dioxide in a chilled first water stream to produce chilled water comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• contact the second gas fraction with the chilled water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• and
• output a second water stream comprising sulfur;
• a filtration unit operable to remove sulfur from the second water stream and output sulfur and a third water stream, wherein the third water stream is recycled to produce the chilled first water stream.

A method, comprising:

• receiving a sour acid gas stream at a splitter, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide:
• operating the splitter to split the sour acid gas stream into a first gas fraction and a second gas fraction;
• operating a sulfur furnace to combust sulfur and produce a gas stream comprising sulfur dioxide;
• operating a liquid-gas contactor reactor to:
• receive the gas stream comprising sulfur dioxide from the sulfur furnace;
• absorb sulfur dioxide in a chilled first water stream to produce chilled water comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• contact the second gas fraction with the chilled water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• and
• output a second water stream comprising sulfur;
• operating a filtration unit to remove the sulfur from the second water stream and output sulfur and a third water stream;
• and
• recycling the third water stream to produce the chilled first water stream.

A system comprising:

• a splitter operable to receive a sour acid gas stream and split the sour acid gas stream into a first gas fraction and a second gas fraction, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide;
• a sulfur furnace operable to produce a gas stream by the combustion of sulfur, the gas stream comprising sulfur dioxide;
• a liquid-gas contactor operable to receive the gas stream comprising sulfur dioxide from the sulfur furnace and absorb the sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• a liquid-gas reactor operable to contact the second gas fraction with the chilled second water stream comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur and output a third water stream comprising sulfur;
• and
• a filtration unit operable to remove sulfur from the third water stream and output sulfur and a fourth water stream, wherein the fourth water stream is recycled to produce the chilled first water stream.

A method, comprising:

• receiving a sour acid gas stream at a splitter, the sour acid gas stream comprising hydrogen sulfide and carbon dioxide:
• operating the splitter to split the sour acid gas stream into a first gas fraction and a second gas fraction;
• operating a sulfur furnace to combust sulfur and produce a gas stream comprising sulfur dioxide;
• operating a liquid-gas contactor to receive the gas stream comprising sulfur dioxide from the sulfur furnace and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• operating a liquid-gas reactor to contact the second gas fraction with the chilled second water stream comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur and output a third water stream comprising sulfur;
• operating a filtration unit to remove the sulfur from the third water stream and output sulfur and a fourth water stream;
• and
• recycling the fourth water stream to produce the chilled first water stream.

A system comprising:

• a sulfur furnace operable to produce a gas stream by the combustion of sulfur, the gas stream comprising sulfur dioxide;
• a liquid-gas contactor operable to receive the gas stream comprising sulfur dioxide from the sulfur furnace and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• a liquid-gas reactor operable to:
• contact a fuel gas stream comprising hydrogen sulfide with the chilled second water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• output a third water stream comprising sulfur;
• and
• output a gas stream to a gas turbine, the gas stream comprising less than 10 ppm hydrogen sulfide;
• a filtration unit operable to remove sulfur from the third water stream and output sulfur and a fourth water stream, wherein the fourth water stream is recycled to produce the chilled first water stream.

A method, comprising:

• receiving a fuel gas stream comprising hydrogen sulfide:
• operating a sulfur furnace to combust sulfur and produce a gas stream comprising sulfur dioxide;
• operating a liquid-gas contactor to receive the gas stream comprising sulfur dioxide from the sulfur furnace and absorb sulfur dioxide in a chilled first water stream to produce a chilled second water stream comprising sulfur dioxide, the chilled first water stream having a temperature in the range of 5° C. to 40° C.;
• operating a liquid-gas reactor to:
• contact the fuel gas with the chilled second water comprising sulfur dioxide to react, in an aqueous phase, sulfur dioxide and hydrogen sulfide to produce sulfur;
• output a third water stream comprising sulfur;
• and
• output a gas stream to a gas turbine, the gas stream comprising less than 10 ppm hydrogen sulfide;
• operating a filtration unit to remove the sulfur from the third water stream and output sulfur and a fourth water stream;
• and
• recycling the fourth water stream to produce the chilled first water stream.