AMMONIA GENERATING METHOD AND APPARATUS THEREFOR

• Main Author: IIJIMA MASAKI
• Format: Patent
• Language: English
• Published: 17.03.2011
• Subjects: AMMONIA; CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; CARBURETTING AIR OR OTHER GASES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; CYANOGEN; FUELS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; LUBRICANTS; METALLURGY; NON-METALLIC ELEMENTS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLEGASES CONTAINING CARBON MONOXIDE; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

An object of the present invention is to provide an ammonia generating method and apparatus that can be operated continuously for a long period of time, and that reduces the cost. The present invention has a gasification furnace 2 into which coal and air are introduced, constituted to perform partial oxidation to gasify the coal; a desulfurizing apparatus 3 constituted to desulfurize the gas generated by the gasification furnace 2; a shift reactor 4 constituted to convert carbon monoxide present in the gas exhausted from the desulfurizing apparatus 3 to carbon dioxide; a carbon dioxide scrubber 5 constituted to remove carbon dioxide present in the gas exhausted from the shift reactor 4; a denitrification apparatus 6 constituted so that, by removing nitrogen present in the gas exhausted from the carbon dioxide scrubber 5, the molar ratio between nitrogen and hydrogen present in the gas is adjusted to approximately 1:3; and an ammonia generator 7 that generates ammonia by causing a reaction between the nitrogen and hydrogen present in the gas exhausted from the denitrification apparatus 6.