{"id":1973,"date":"2023-06-26T16:44:07","date_gmt":"2023-06-26T07:44:07","guid":{"rendered":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/?page_id=1973"},"modified":"2025-06-20T18:58:18","modified_gmt":"2025-06-20T09:58:18","slug":"solution-06-01-01","status":"publish","type":"page","link":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/business\/solution-06\/solution-06-01-01\/","title":{"rendered":"Flue Gas Desulfurization\/Gas Denitrification"},"content":{"rendered":"\n
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Treatment of sulfur dioxide and nitrogen oxides emitted from power plants and industrial boilers.<\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t

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Spray Nozzles Scrubbers<\/a><\/h3>\n\t\t\t\t\t\t\t\t\t\t
\"\u30b9\u30d7\u30ec\u30fc\u5f0f\u30b9\u30af\u30e9\u30d0\u30fc\"<\/a><\/div>\n\t\t\t\t\t\t\t\t\t\t
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System<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Flue Gas Desulfurization System<\/dd>\n\t\t\t\t\t\t\t\t\t\t
Process<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Limestone Process<\/dd>\n\t\t\t\t\t\t\t\t\t\t<\/dl>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/section>\n\n\n\t\t\t\t\t\t\t\t\t
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MORETANA Scrubbers<\/a><\/h3>\n\t\t\t\t\t\t\t\t\t\t
\"\u30e2\u30ec\u30bf\u30ca\u5f0f\u30b9\u30af\u30e9\u30d0\u30fc\"<\/a><\/div>\n\t\t\t\t\t\t\t\t\t\t
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System<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Flue Gas Desulfurization System<\/dd>\n\t\t\t\t\t\t\t\t\t\t
Process<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Mg(OH)2 Process, Seawater Process, Sodium Hydroxide Process\n<\/dd>\n\t\t\t\t\t\t\t\t\t\t<\/dl>\n\t\t\t\t\t\t\t\t\t\t <\/div>\n\t\t\t\t\t\t\t\t\t<\/section>\n\n\n\t\t\t\t\t\t\t\t\t
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NEOBRID Scrubbers<\/a><\/h3>\n\t\t\t\t\t\t\t\t\t\t
\"\u30cd\u30aa\u30d6\u30ea\u30c3\u30c9\u5f0f\u30b9\u30af\u30e9\u30d0\u30fc\"<\/a><\/div>\n\t\t\t\t\t\t\t\t\t\t
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System<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Flue Gas Desulfurization System<\/dd>\n\t\t\t\t\t\t\t\t\t\t
Process<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Seawater Process<\/dd>\n\t\t\t\t\t\t\t\t\t\t<\/dl>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/section>\n\n\t\t\t\t\t\t\t\t\t
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Contact treatment with catalyst<\/h3>\n\t\t\t\t\t\t\t\t\t\t <\/div-->\n\t\t\t\t\t\t\t\t\t\t
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System<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Gas Denitrification System<\/dd>\n\t\t\t\t\t\t\t\t\t\t
Process<\/span><\/dt>\n\t\t\t\t\t\t\t\t\t\t
Catalyst system (Dry process)<\/dd>\n\t\t\t\t\t\t\t\t\t\t<\/dl>\n\t\t\t\t\t\t\t\t\t\t <\/div>\n\t\t\t\t\t\t\t\t\t<\/section>\n\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t<\/div>\n\n\n\n
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\n \n \"Close\"\n <\/a>\n <\/p>\n\n

Spray Nozzle Scrubbers<\/h2>\n\n
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\n \"\u30b9\u30d7\u30ec\u30fc\u5f0f\u30b9\u30af\u30e9\u30d0\u30fc\"\n <\/div>\n\n <\/div>\n\n
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\n Overview<\/span>\n <\/dt>\n\n
The absorbent is sprayed downward from a series of nozzles and scrubs the flue gas as it moves upward resulting in SO2 absorption.\n<\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1\uff09Having a low pressure drop.\n
\n\n\n 2)Scaling problems are less likely to occur.\n <\/dd>\n\n\n <\/dl>\n\n
\n \n\t\t\t\t\t\tView Gas Technologies catalog<\/span>\n\t\t\t\t\t\t<\/a>\n <\/div>\n\n \n <\/div>\n\n <\/div>\n\n
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Limestone Process<\/h2>\n\n
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\n \"\u77f3\u7070\u77f3\u818f\u6cd5\uff08\u6e7f\u5f0f\uff09\"\n <\/div>\n\n <\/div>\n\n
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\n Overview<\/span>\n <\/dt>\n\n
\n Limestone\uff08CaCO\n 3<\/sub>\n \uff09slurry absorbs sulfur dioxide (SO\n 2<\/sub>)\n in the absorber and a byproduct as gypsum is generated.\n\n <\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1) Cheap absorbent (limestone), low operating cost.\n
\n\n\n 2) Producing a gypsum by-product to be collected.\n
\n\n\n 3) The amount of wastewater discharge is the smallest.\n <\/dd>\n\n
\n Reaction<\/span>\n <\/dt>\n\n
\n SO\n 2<\/sub>\n +CaCO\n 3<\/sub>\n +1\/2H\n 2<\/sub>\n O\n
\n\n\n \u2192CaSO\n 3<\/sub>\n \u30fb1\/2H\n 2<\/sub>\n O+CO\n 2<\/sub>\n
\n\n\n CaSO\n 3<\/sub>\n \u30fb1\/2H\n 2<\/sub>\n O+1\/2O\n 2<\/sub>\n +3\/2H\n 2<\/sub>\n O\n <\/dd>\n\n <\/dl>\n\t\t\t\t\t\n\n \n <\/div>\n\n <\/div>\n\n <\/div>\n\n <\/div>\n\n \n\n
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\n \n \"Close\"\n <\/a>\n <\/p>\n\n

NEOBRID Scrubbers<\/h2>\n\n
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\n \"\u30cd\u30aa\u30d6\u30ea\u30c3\u30c9\u5f0f\u30b9\u30af\u30e9\u30d0\u30fc\"\n <\/div>\n\n <\/div>\n\n
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\n Overview<\/span>\n <\/dt>\n\n
The absorber tower consists of a combination of MORETANA plates with packing materials. It can remove SO2<\/sub> efficiently from the flue gas.<\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1\uff09Contact area between the gas and liquid is large.\n\n
\n\n\n 2)Simple process enables the absorber design to be compact.\n <\/dd>\n\n <\/dl>\n\n\n\t\t\t\t\t
\n \n\t\t\t\t\t\tView Gas Technologies catalog<\/span>\n\t\t\t\t\t\t<\/a>\n <\/div>\n\n \n <\/div>\n\n <\/div>\n\n
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Seawater Process<\/h2>\n\n
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\n \"\u6d77\u6c34\u6cd5\"\n <\/div>\n\n <\/div>\n\n
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\n Overview<\/span>\n <\/dt>\n\n
\n Seawater is used as an absorbent to remove SO\n 2<\/sub>\n from the flue gas.The absorbed SO\n 2<\/sub>\n is oxidized to soluble sulfate by aeration before discharge to the sea.\n\n <\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1) The absorbent is seawater, no other reagents are necessary.\n
\n\n\n 2) Simple system, easy operation and maintenance.\n
\n\n\n 3) No by-product is generated.\n
\n\n\n 4) The spent seawater can be discharged to sea after aeration.\n <\/dd>\n\n
\n Reaction<\/span>\n <\/dt>\n\n
\n SO\n 2<\/sub>\n +H\n 2<\/sub>\n O \u2192 HSO\n 3<\/sub>\n –<\/sup>\n + H\n +<\/sup>\n
\n\n\n HSO\n 3<\/sub>\n –<\/sup>\n +1\/2O\n 2<\/sub>\n \u2192 SO\n 4<\/sub>\n 2-<\/sup>\n + H\n +<\/sup>\n
\n\n\n HCO\n 3<\/sub>\n –<\/sup>\n + H\n +<\/sup>\n \u2192 CO\n 2<\/sub>\n +H\n 2<\/sub>\n O\n <\/dd>\n\n <\/dl>\n\n \n <\/div>\n\n <\/div>\n\n <\/div>\n\n <\/div>\n\n \n\n
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<\/div>\n\n
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\n \n \"Close\"\n <\/a>\n <\/p>\n\n

[Flue Gas Desulfurization System] MORETANA Scrubbers<\/h2>\n\n
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\n \"\u30e2\u30ec\u30bf\u30ca\u5f0f\u30b9\u30af\u30e9\u30d0\u30fc\"\n <\/div>\n\n <\/div>\n\n
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\n overview<\/span>\n <\/dt>\n\n
MORETANA is the name given to the perforated plate that has high open area ratio between 25%-60%. It promotes the contact between gas and liquid efficiently and can also treat flue gas containing dust.<\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1) Higher gas speed in tower and compact structure.\n
\n\n\n 2) High efficiency dust removal.\n
\n\n\n 3) No plugging due to self-cleaning effect.\n\n <\/dd>\n\n <\/dl>\n\n\t\t\t\t\t
\n \n\t\t\t\t\t\tView Gas Technologies catalog<\/span>\n\t\t\t\t\t\t<\/a>\n <\/div>\n\n \n <\/div>\n\n <\/div>\n\n
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Mg(OH)2<\/sub> process<\/h2>\n\n
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\n \"\u6c34\u9178\u5316\u30de\u30b0\u30cd\u30b7\u30a6\u30e0\u6cd5\u3000\uff08\u6e7f\u5f0f\uff09\"\n <\/div>\n\n <\/div>\n\n
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\n Overview<\/span>\n <\/dt>\n\n
\n Mg(OH)2<\/sub> is used as an absorbent to remove sulfur dioxide (SO2<\/sub>) from the flue gas. The absorbed SO2<\/sub> is discharged as MgSO4<\/sub> aqueous solution.\n \n <\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1) Magnesium hydroxide is another cheap absorbent similar to limestone.\n
\n\n\n 2) Relatively simple and compact system resulting in easy operations and maintenance.\n\n
\n\n\n 3) No scaling problems.\n
\n\n\n 4) MgSO4<\/sub> can be discharge to sea\n <\/dd>\n\n
\n Reaction<\/span>\n <\/dt>\n\n
\n SO\n 2<\/sub>\n +Mg(OH)\n 2<\/sub>\n \u2192 MgSO\n 3<\/sub>\n + H\n 2<\/sub>\n O\n
\n\n\n SO\n 2<\/sub>\n +MgSO\n 3<\/sub>\n +H\n 2<\/sub>\n O\u2192Mg(HSO\n 3<\/sub>\n )\n 2<\/sub>\n
\n\n\n MgSO\n 3<\/sub>\n +1\/2O\n 2<\/sub>\n \u2192 MgSO\n 4<\/sub>\n <\/dd>\n\n <\/dl>\n\n\n \n <\/div>\n\n <\/div>\n\n
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Seawater Process<\/h2>\n\n
\n\n
\n \"\u6d77\u6c34\u6cd5\"\n <\/div>\n\n <\/div>\n\n
\n\n
\n\n
\n\n
\n Overview<\/span>\n <\/dt>\n\n
\n Seawater is used as an absorbent to remove sulfur dioxide (SO2<\/sub>) from the flue gas. The absorbed SO2<\/sub> is oxidized to soluble sulfate (SO4<\/sub>2-<\/sup>) by aeration before discharge to the sea.\n\n <\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1) The absorbent is seawater, no other reagents are necessary.\n
\n\n\n 2) Simple system, easy operation and maintenance.\n\n\n
\n\n\n 3) No by-product is generated.\n
\n\n\n 4) The spent seawater can be discharged to sea after aeration.\n <\/dd>\n\n
\n Reaction<\/span>\n <\/dt>\n\n
\n SO\n 2<\/sub>\n +H\n 2<\/sub>\n O \u2192 HSO\n 3<\/sub>\n –<\/sup>\n + H\n +<\/sup>\n
\n\n\n HSO\n 3<\/sub>\n –<\/sup>\n +1\/2O\n 2<\/sub>\n \u2192 SO\n 4<\/sub>\n 2-<\/sup>\n + H\n +<\/sup>\n
\n\n\n HCO\n 3<\/sub>\n –<\/sup>\n + H\n +<\/sup>\n \u2192 CO\n 2<\/sub>\n +H\n 2<\/sub>\n O\n <\/dd>\n\n <\/dl>\n\n\n\n \n <\/div>\n\n <\/div>\n\n
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NaOH Process<\/h2>\n\n
\n\n
\n \"\u82db\u6027\u30bd\u30fc\u30c0\u6cd5\"\n <\/div>\n\n <\/div>\n\n
\n\n
\n\n
\n\n
\n overview<\/span>\n <\/dt>\n\n
\n NaOH is used as an absorbent to remove sulfur dioxide (SO2<\/sub>) from the flue gas. The absorbed SO2<\/sub> is discharged as Na2<\/sub>SO4<\/sub> aqueous solution.\n .\n <\/dd>\n\n
\n Features<\/span>\n <\/dt>\n\n
\n 1) Simple system and easy maintenance.\n
\n\n\n 2) No scaling problems.\n
\n\n\n 3) Highest SO2<\/sub> removal efficiency.\n
\n\n\n 4) Producing Na2<\/sub>SO4<\/sub> as a by-product to be collected.\n\n <\/dd>\n\n
\n Reaction<\/span>\n <\/dt>\n\n
\n SO\n 2<\/sub>\n +2NaOH \u2192 Na\n 2<\/sub>\n SO3 + H\n 2<\/sub>\n O\n
\n\n\n SO\n 2<\/sub>\n +Na\n 2<\/sub>\n SO\n 3<\/sub>\n +H\n 2<\/sub>\n O \u2192 2NaHSO\n 3<\/sub>\n
\n\n\n NaHSO\n 3<\/sub>\n +NaOH \u2192\u3000Na\n 2<\/sub>\n SO\n 3<\/sub>\n +H\n 2<\/sub>\n O\n
\n\n\n Na\n 2<\/sub>\n SO\n 3<\/sub>\n + 1\/2O\n 2<\/sub>\n \u2192 Na\n 2<\/sub>\n SO\n 4<\/sub>\n <\/dd>\n\n <\/dl>\n\n\n \n <\/div>\n\n <\/div>\n\n <\/div>\n\n <\/div>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Treatment of sulfur dioxide and nitrogen oxides emitted from power plants and industrial boilers. Spray Nozzle […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1585,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-solution-level4.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1973","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/pages\/1973","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/comments?post=1973"}],"version-history":[{"count":34,"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/pages\/1973\/revisions"}],"predecessor-version":[{"id":9795,"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/pages\/1973\/revisions\/9795"}],"up":[{"embeddable":true,"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/pages\/1585"}],"wp:attachment":[{"href":"https:\/\/www.kubota-environmentaleng.co.jp\/eng\/wp-json\/wp\/v2\/media?parent=1973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}