Abstract: An apparatus is provided for producing hydrogen in an existing steam methane reformer (SMR) via ammonia cracking, the apparatus comprising: an ammonia storage vessel; a furnace having a plurality of reactor tubes and a plurality of burners, wherein the reactor tubes and the burners are in fluid communication with the ammonia storage vessel, such that the reactor tubes and the burners are configured to receive a flow of ammonia gas sourced from the ammonia storage vessel, and catalytically crack the ammonia within the reactor tubes to produce a crude process gas and a flue gas; a plurality of waste heat recovery sections; a boiler feed water preparation system; means for treating the crude process gas in order to reduce the amount of the unreacted ammonia in the crude process gas, thereby resulting in an aqueous ammonia stream and a washed crude stream; and a pressure swing adsorption (PSA) unit disposed downstream the means for treating the crude process gas.

Abstract: A method is provided for producing hydrogen in an steam methane reformer (SMR) via ammonia cracking, wherein the SMR can include a furnace, a pressure swing adsorption (PSA) unit, waste heat recovery sections, and a water scrubber, wherein the furnace has a plurality of SMR tubes and a plurality of burners. The method can include the steps of: withdrawing ammonia from an ammonia storage vessel; preheating the ammonia to form a warm ammonia stream; introducing the warm ammonia stream into the SMR tubes of the furnace under conditions effective for catalytically cracking the ammonia, thereby forming a crude stream comprising hydrogen, nitrogen, and unreacted ammonia; treating the crude stream with a water wash in order to remove the unreacted ammonia from the crude stream, thereby resulting in an aqueous ammonia stream and a washed crude stream; and introducing the washed crude stream into the PSA unit to produce a hydrogen product stream and a PSA off-gas.

Abstract: An apparatus is provided for producing hydrogen in an existing steam methane reformer (SMR) via ammonia cracking, the apparatus comprising: an ammonia storage vessel; a furnace having a plurality of reactor tubes and a plurality of burners, wherein the reactor tubes and the burners are in fluid communication with the ammonia storage vessel, such that the reactor tubes and the burners are configured to receive a flow of ammonia gas sourced from the ammonia storage vessel, and catalytically crack the ammonia within the reactor tubes to produce a crude process gas and a flue gas; a plurality of waste heat recovery sections; a boiler feed water preparation system; means for treating the crude process gas in order to reduce the amount of the unreacted ammonia in the crude process gas, thereby resulting in an aqueous ammonia stream and a washed crude stream; and a pressure swing adsorption (PSA) unit disposed downstream the means for treating the crude process gas.

Abstract: A method is provided for producing hydrogen in an steam methane reformer (SMR) via ammonia cracking, wherein the SMR can include a furnace, a pressure swing adsorption (PSA) unit, waste heat recovery sections, and a water scrubber, wherein the furnace has a plurality of SMR tubes and a plurality of burners. The method can include the steps of: withdrawing ammonia from an ammonia storage vessel; preheating the ammonia to form a warm ammonia stream; introducing the warm ammonia stream into the SMR tubes of the furnace under conditions effective for catalytically cracking the ammonia, thereby forming a crude stream comprising hydrogen, nitrogen, and unreacted ammonia; treating the crude stream with a water wash in order to remove the unreacted ammonia from the crude stream, thereby resulting in an aqueous ammonia stream and a washed crude stream; and introducing the washed crude stream into the PSA unit to produce a hydrogen product stream and a PSA off-gas.