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Chlorine and sulfur-free fuel gas substantially comprising H 2 +CO for use as fuel in a gas turbine for the production of mechanical and electrical power and environmentally-safe flue gas is produced by the partial oxidation of liquid hydrocarbonaceous or solid carbonaceous fuels having chlorine and

Chlorine and sulfur-free fuel gas substantially comprising H 2 +CO for use as fuel in a gas turbine for the production of mechanical and electrical power and environmentally-safe flue gas is produced by the partial oxidation of liquid hydrocarbonaceous or solid carbonaceous fuels having chlorine and sulfur-containing impurities, cooling and splitting the raw fuel gas into two streams A and B, separately cooling raw fuel gas stream A by indirect heat exchange with dry N 2 gas while separately cooling the stream of raw fuel gas B by indirect heat exchange with the product stream of clean chlorine and sulfur-free fuel gas. HCl and particulate matter are then removed from raw fuel gas streams A and B; and, after combining raw fuel gas streams A and B together further cooling and removal of sulfur-containing gases takes place. By this process, attack on metal heat exchangers by the corrosive constituents in the raw fuel gas is prevented. In one embodiment, the clean chlorine and sulfur-free fuel gas is humidified and burned in the gas turbine to produce increased power and efficiency without polluting the atmosphere.

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1. A process for the generation of power comprising the steps: (1) reacting by partial oxidation a stream of free-oxygen containing gas with a stream of chlorine and sulfur-containing liquid hydrocarbonaceous or solid carbonaceous fuel in the presence of a temperature moderator in the reaction zo

1. A process for the generation of power comprising the steps: (1) reacting by partial oxidation a stream of free-oxygen containing gas with a stream of chlorine and sulfur-containing liquid hydrocarbonaceous or solid carbonaceous fuel in the presence of a temperature moderator in the reaction zone of a down-flowing vertical free-flow gas generator to produce a stream of raw fuel gas comprising H 2, CO, CO 2, H 2 O, H 2 S, COS, HCl, CH 4, and A, along with entrained molten slag and particulate matter; wherein the temperature in said reaction zone is above the dew point of H 2 O in said steam of raw fuel gas; (2) cooling said raw fuel gas stream from step (1) to a temperature above the dew point of H 2 O in said steam of raw fuel gas by indirect heat exchange with boiler circulating water; and separating out said slag; (3) splitting the slag-free raw fuel gas stream from step (2) into separate gas streams A and B, and separately cooling each raw fuel gas stream A and, B to a temperature above the dew point of H 2 O in said separate gas steams by indirect heat exchange with boiler circulating water, thereby producing steam; (4) passing a stream of nitrogen gas in indirect heat exchange with the raw fuel gas stream A from step (3), thereby further cooling said raw fuel gas stream A to a temperature above the dew point of H 2 O in said raw fuel gas stream A while heating the nitrogen gas stream; (5) scrubbing the stream of raw fuel gas A that was cooled in step (4) with water to produce a clean chlorine-free stream of fuel gas; (6) further cooling the raw fuel gas stream B from step (3) to a temperature above the dew point of H 2 O in said raw fuel gas stream B by indirect heat exchange with a stream of clean water saturated chlorine and sulfur-free fuel gas leaving subsequent step (13) thereby heating said clean chlorine and sulfur-free fuel gas stream; (7) scrubbing with water the cooled stream of raw fuel gas B that was cooled in step (6) produce a clean chlorine-free stream of fuel gas; (8) combining the streams of clean chlorine-free fuel gas A and B from steps (5) and (7) respectively; (9) cooling the combined stream of clean chlorine-free fuel gas from step (8) by indirect heat exchange with a clean chlorine and sulfur-free stream of fuel gas from subsequent step (11); (10) further cooling the combined stream of raw fuel gas from step (9) by indirect heat exchange with boiler circulating water and/or cold water in one or more heat exchangers; (11) removing substantially all of the sulfur-containing gases from the combined stream of clean chlorine-free fuel gas from step (10) in an acid-gas removal zone; (12) saturating with water the chlorine and sulfur-free fuel gas stream from step (11); (13) heating to a temperature in the range of about 250° F. to 400° F., said clean water saturated stream of chlorine and sulfur-free fuel gas from step (12) by indirect heat exchange with steam; (14) introducing the following gaseous streams into the combustion zone of a gas turbine: (a) a stream of air, (b) the stream of nitrogen gas heated in step (4), and (c) at least a portion of the stream of clean water saturated chlorine and sulfur-free fuel gas heated in step (6); and (15) burning said portion of the stream of clean water saturated chlorine and sulfur-free fuel gas in said combustion zone to produce flue gas substantially free from HCl, sulfur-containing gas, and NO x ; and passing said flue gas through an expansion turbine to produce power. 2. The process of claim 1 provided with the steps of passing the flue gas leaving said expansion turbine in step (15) through a convection heater in indirect heat exchange with boiler feed water which is converted into steam, and passing said steam through a steam turbine for the production of mechanical and electrical power. 3. The process of claim 1 wherein from about 10 to 100 volume % of the stream of clean water saturated chlorine and sulfur-free fuel gas heated in step (6) is introduced into the combustion zone in step (14); and provided with the step of catalytically reacting the remainder of said stream of clean water saturated chlorine and sulfur-free fuel gas substantially comprising H 2 +CO to produce organic chemicals or a H 2 -rich gas stream. 4. A process for the generation of power comprising the steps of: (1) reacting by partial oxidation a stream of free-oxygen containing gas with a stream of chlorine and sulfur-containing liquid hydrocarbonaceous or solid carbonaceous fuel in the presence of a temperature moderator in the reaction zone of a down-flowing vertical free-flow gas generator at a temperature in the range of about 1800° F. to 3000° F. and a pressure in the range of about 1 to 250 atmospheres to produce a stream of raw fuel gas comprising H 2, CO, CO 2, H 2 O, H 2 S, COS, HCl, CH 4, and A, along with entrained molten slag and particulate matter; wherein the temperature in said reaction zone is above the dew point of H 2 O in said steam of raw fuel gas; (2) cooling said raw fuel gas stream from step (1) to a temperature in the range of 1500° F. to 1000° F. and above the dew point of H 2 O in said steam of raw fuel gas by indirect heat exchange with boiler circulating water; and separating out said slag; (3) splitting the slag-free raw fuel gas stream from step (2) into separate gas streams A and B, and separately cooling each raw fuel gas stream A and B to a temperature above the dew point of H 2 O is said separate gas streams by indirect heat exchange with boiler circulating water, thereby producing steam; (4) passing a stream of dry nitrogen gas at a temperature in the range of about ambient to 400° F. in indirect heat exchange with the raw fuel gas stream A from step (3), thereby further cooling said raw fuel gas stream A to a temperature in the range of about 600° to 300° F. and above the dew point of H 2 O in said raw fuel gas stream A while heating the nitrogen gas stream to a temperature in the range of about 400° to 800° F.; (5) scrubbing the stream of raw fuel gas A that was cooled in step (4) with water to produce a clean chlorine-free stream of fuel gas; (6) further cooling the raw fuel gas stream B from step (3) to a temperature about 600° F. to 300° F. and above the dew point of water in said raw fuel gas stream B by indirect heat exchange with a stream of clean water saturated chlorine and sulfur-free fuel gas leaving subsequent step (13) whereby heating said clean chlorine and sulfur-free fuel gas stream to a temperature in the range of about 400° F. to 800° F.; (7) scrubbing with water the cooled stream of raw fuel gas B that was cooled in step (6) to produce a clean chlorine-free stream of fuel gas; (8) combining the streams of clean chlorine-free fuel gas A and B from steps (5) and (7) respectively; (9) cooling the combined stream of clean chlorine-free fuel gas from step (8) having a temperature in the range of about 250° F. to 500° F. to a temperature in the range of about 200° F. to 400° F. by indirect heat exchange with a clean chlorine and sulfur-free stream of fuel gas from subsequent step (11) having a temperature in the range of about 90° F. to 120° F.; (10) further cooling the combined stream of raw fuel gas from step (9) to a temperature in the range of about 90° F. to 120° F. by indirect heat exchange with boiler circulating water and/or cold water in one or more heat exchangers; (11) removing substantially all of the sulfur-containing gases from the combined stream of clean chlorine-free fuel gas from step (10) an acid-gas removal zone; (12) saturating water the chlorine and sulfur-free fuel gas stream from step (11); (13) heating to a temperature in the range of about 250° F. to 400° F., said clean water saturated stream of chlorine and sulfur-free fuel gas from step (12) by indirect heat exchange with steam; (14) separately introducing the following gaseous streams into the combustion zone of a gas turbine by way of separate lines (a) a stream of air, (b) the stream of nitrogen gas heated in step (4), and (c) the stream of clean and water saturated chlorine and sulfur-free fuel gas heated in step (6); and (15) burning said clean water saturated chlorine and sulfur-free fuel gas in said combustion zone to produce flue gas substantially free from HCl, sulfur-containing gas, and NO x ; and passing said flue gas through an expansion turbine to produce power and hot exhaust gas; producing steam by indirect heat exchange of boiler feed water with said hot exhaust gas; and passing said steam through a steam turbine for the production of power. 5. A process for the generation of power comprising the steps: (1) reacting by partial oxidation a stream of free-oxygen containing gas with a stream of chlorine and sulfur-containing liquid hydrocarbonaceous or solid carbonaceous fuel in the presence of a temperature moderator in the reaction zone of a down-flowing vertical free-flow gas generator at a temperature in the range of about 1800° to 3000° F. and a pressure in the range of about 1 to 250 atmospheres to produce a stream of raw fuel gas comprising H 2, CO, CO 2, H 2 O, H 2 S, COS, HCl, CH 4, and A, along with entrained molten slag and particulate matter; wherein the temperature in said reaction zone is above the dew point of H 2 O in said steam of raw fuel gas; (2) cooling said raw fuel gas stream from step (1) to a temperature in the range of about 1500° to 1000° F. and above the dew point of H 2 O in said stream of raw fuel gas by indirect heat exchange with boiler circulating water; and separating out said slag; (3) splitting the slag-free raw fuel gas stream from step (2) into separate gas streams A and B, and separately cooling each raw fuel gas stream A and B to a temperature in the range of about 1000° to 600° F. and above the dew point of H 2 O in said separate steams by indirect heat exchange with boiler circulating water, thereby producing steam; (4) passing a stream of dry nitrogen gas at a temperature in the range of about ambient to 400° F. in indirect heat exchange with the raw fuel gas stream A from step (3), thereby further cooling said raw fuel gas stream A to a temperature in the range of about 600° to 300° and above the dew point of H 2 O in said raw fuel gas stream A while heating the nitrogen gas stream to a temperature in the range of about 400° to about 800° F.; (5) scrubbing the stream of raw fuel gas A that was cooled in step (4) with water to produce a clean chlorine-free stream of fuel gas; (6) further cooling the raw fuel gas stream B from step (3) to a temperature about 600° F. to 300° F. and above the dew point of H 2 O in said raw fuel gas stream B by indirect heat exchange with a stream of clean chlorine and sulfur-free fuel gas leaving subsequent step (12) thereby heating said clean chlorine and sulfur-free fuel gas stream to a temperature in the range of about 400° F. to 800° F.; (7) scrubbing with water the cooled stream of raw fuel gas B that was cooled in step (6) to produce a clean chlorine-free stream of fuel gas; (8) combining the streams of clean chlorine-free fuel gas A and B from steps (5) and (7) respectively; (9) cooling the combined stream of clean chlorine-free fuel gas from step (8) having a temperature in the range of about 250° F. to 500° F. to a temperature in the range of about 200° F. to 400° F. by indirect heat exchange with a clean chlorine and sulfur-free stream of fuel gas from subsequent step (11) having a temperature in the range of about 90° F. to 120° F.; (10) further cooling the combined stream of raw fuel gas from step (9) to a temperature in the range of about 90° F. to 120° F. by indirect heat exchange with boiler circulating water and/or cold water in one or more heat exchangers; (11) removing substantially all of the sulfur-containing gases from the combined stream of clean chlorine-free fuel gas from step (10) in an acid-gas removal zone; (12) heating to a temperature in the range of about 250° F. to 400° F., said stream of clean chlorine and sulfur-free fuel gas from step (9) by indirect heat exchange with steam; (13) separately introducing the following gaseous streams into the combustion zone of a gas turbine by way of separate lines (a) a stream of air, (b) the stream of nitrogen gas heated in step (4), and (c) at least a portion of the stream of clean chlorine and sulfur-free fuel gas heated in step (6); and (14) burning said portion of the steam of clean chlorine and sulfur-free fuel gas in said combustion zone to produce flue gas substantially free from HCl, sulfur-containing gas, and NO x ; and passing said flue gas through an expansion turbine to produce power and hot exhaust gas; producing steam by indirect heat exchange of boiler feed water with said hot exhaust gas; and passing said steam through a steam turbine for the production of power. 6. A process for the generation of power comprising the steps: (1) reacting by partial oxidation a stream of free-oxygen containing gas with a stream of chlorine and sulfur-containing liquid hydrocarbonaceous or solid carbonaceous fuel in the presence of a temperature moderator in the reaction zone of a down-flowing vertical free-flow gas generator to produce a stream of raw fuel gas comprising H 2, CO, CO 2, H 2 O, H 2 S, COS, HCl, CH 4, and A, along with entrained molten slag and particulate matter; wherein the temperature in said reaction zone is above the dew point of H 2 O in said stream of raw fuel gas; (2) cooling said raw fuel gas stream from step (1) to a temperature above the dew point of H 2 O in said stream of raw fuel gas indirect heat exchange with boiler circulating water; and separating out said slag; (3) splitting the slag-free raw fuel gas stream from step (2) into separate gas streams A and B, and separately cooling each raw fuel gas stream A and B to a temperature above the dew point of H 2 O in said separate gas streams by indirect heat exchange with boiler circulating water, thereby producing steam; (4) passing a stream of nitrogen gas in indirect heat exchange with the raw fuel gas stream A from step (3), thereby further cooling said raw fuel gas stream A to a temperature above the dew point of water in said raw fuel gas stream A while heating the nitrogen gas stream; (5) scrubbing the stream of raw fuel gas A that was cooled in step (4) with water to produce a clean chlorine-free stream of fuel gas; (6) further cooling the raw fuel gas stream B from step (3) to a temperature above the dew point of water in said raw fuel gas stream B by indirect heat exchange with a stream of clean humidified chlorine and sulfur-free fuel gas leaving subsequent step (12) thereby heating said clean chlorine and sulfur-free fuel gas stream; (7) scrubbing with water the cooled stream of raw fuel gas B that was cooled in step (6) to produce a clean chlorine-free stream of fuel gas; (8) combining the streams of clean chlorine-free fuel gas A and B from step (5) and step (7) respectively; (9) cooling the combined stream of clean chlorine-free fuel gas from step (8) by indirect heat exchange with a clean chlorine and sulfur-free stream of fuel gas from subsequent step (11); (10) further cooling the combined stream of raw fuel gas from step (9) by indirect heat exchange with boiler circulating water and/or cold water in one or more heat exchangers; (11) removing substantially all of the sulfur-containing gases from the combined stream of clean chlorine-free fuel gas from step (10) in an acid-gas removal zone; (12) heating said stream of clean chlorine and sulfur-free fuel gas from step (9) by indirect heat exchange with steam; (13) introducing the following gaseous streams into the combustion zone of a gas turbine: (a) a stream of air, (b) the stream of nitrogen gas heated in step (4), and (c) at least a portion of the stream of clean chlorine and sulfur-free fuel gas heated in step (6); and (14) burning said portion of the steam of clean chlorine and sulfur-free fuel gas in said combustion zone to produce flue gas substantially free from HCl, sulfur-containing gas, and NO 2 ; and passing said flue gas through an expansion turbine to produce power. 7. The process of claim 6 provided with the steps of passing the exhaust flue gas leaving said expansion turbine in step (14) through a convection heater in indirect heat exchange with boiler feed water which is converted into steam, and passing said steam through a steam turbine for the production of mechanical and electrical power. 8. The process of claim 1 wherein from about 10 to 100 volume % of the stream of clean chlorine and sulfur-free fuel gas heated in step (6) is introduced into the combustion zone in step (13); and provided with the step of catalytically reacting the remainder of said stream of clean chlorine and sulfur-free fuel gas substantially comprising H 2 +CO to produce organic chemicals or a H 2 -rich gas stream. 9. The process of claim 6 wherein said chlorine and sulfur-containing liquid hydrocarbonaceous or solid carbonaceous fuel contain about 0.2 to 10 wt. % (dry basis) of sulfur and about 10 to 20,000 parts per million ( dry basis) of chlorine. 10. The process of claim 9 wherein said chlorine is present as a chloride selected from the group consisting of sodium, potassium, magnesium, and mixtures thereof; and said sulfur is present as a sulfide selected from the group consisting of iron, zinc, copper-iron, lead, and mixtures thereof and/or as sulfates selected from the group consisting of calcium, barium, iron, sodium, aluminum, and mixtures thereof. 11. The process of claim 6 wherein gas stream A comprises 30 to 70 volume % of the slag-free raw fuel gas stream from step (2) and gas stream B comprises the remainder. 12. The process of claim 6 wherein the scrubbing water in steps (5) and (7) is at a temperature in the range of about 250° F. to 450° F. and has a pH in the range of about 6 to 9. 13. The process of claim 12 provided with the addition to the water of a base material selected from the group consisting of NH 3, NH 4 OH, NaOH, KOH, Na 2 CO 3 and K 2 CO 3 . 14. The process of claim 6 wherein said solid carbonaceous fuel is selected from the group consisting of coal, such as anthracite, bituminous, subbituminous, coke from coal; lignite; residue derived from coal liquefaction; oil shale; tar sands; petroleum coke; asphalt; pitch; particulate carbon; soot; concentrated sewer sludge; and mixtures thereof. 15. The process of claim 6 wherein said liquid hydrocarbonaceous fuel is selected from the group consisting of liquefied petroleum gas, petroleum distillates and residua, gasoline, naphtha, kerosene, crude petroleum, asphalt, gas oil, residual oil, tar-sand oil, shale oil, oil derived from coal, aromatic hydrocarbons (such as benzene, toluene, and xylene fractions), coal tar, cycle gas oil from fluid-catalytic-cracking operations, furfural extract of coker gas oil, and mixtures thereof. 16. The process of claim 6 wherein said free-oxygen containing gas is selected from the group consisting of air, oxygen-enriched air, substantially pure oxygen, and mixtures thereof.