Process for reduction of nitrogen and sulphur oxide ejections from flue gases

The invention relates to the environmental protection.Summary of the invention consists in that it is proposed a process for reduction of nitrogen and sulphur oxide ejections from flue gases, consisting in the ionization by collision of the flue gas flow in an electric field of the pulsating corona...

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Hauptverfasser: CRĂCIUN Svetlana, CRĂCIUN Alexandru, DMITRIEV Serghei, BOTEZ Cleopatra, SAJIN Tudor, DUCA Gheorghe
Format: Patent
Sprache:eng ; rum ; rus
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Zusammenfassung:The invention relates to the environmental protection.Summary of the invention consists in that it is proposed a process for reduction of nitrogen and sulphur oxide ejections from flue gases, consisting in the ionization by collision of the flue gas flow in an electric field of the pulsating corona discharge, wherein it is concomitantly applied the alternating electric field with the effective intensity of 5...30 kV/cm, and with a frequency, determined by the following formula:f = (1,10...1,25),where f is the frequency of the alternating electric field, Hz;Kmax - the maximum value of ion mobility, participating in the formation of active radicals, m2/(V·S);- the effective intensity of the alternating electric field, V/m;- the electrode spacing, creating the alternating electric field, m,with the formation of active radicals, oxidation of nitrogen and sulphur oxides with active radicals, with obtaining as a result of hydrolysis reaction of the nitric and sulphuric acids and neutralization of acids with ammonia. Invenţia se referă la protecţia mediului în¬conjurător.Esenţa invenţiei constă în aceea că se propune un procedeu de reducere a emisiilor de oxizi de azot şi sulf din gazele de ardere, care constă în ionizarea prin şoc a fluxului de gaze de ardere într-un câmp electric de descărcare corona pulsatorie, în care concomitent se aplică câmpul electric alternativ cu intensitatea efectivă de 5...30 kV/cm, şi cu o frecven¬ţă determinată prin următoarea formulă:f = (1,10...1,25) ,unde f este frecvenţa câmpului electric alternativ, Hz;Kmax - valoarea maximă a mobilităţii ionilor, care participă la formarea radicalilor activi, m2/(V·S);- intensitatea efectivă a câmpului electric alternativ, V/m;l - distanţa dintre electrozii care creează câmpul electric alternativ, m,cu formarea de radicali activi, oxidarea cu radicali activi a oxizilor de azot şi sulf cu obţinerea ca rezultat al reacţiei de hidroliză a acizilor azotic şi sulfuric şi neutralizarea acizilor cu amoniac. Изобретение относится к защите окружающей среды.Сущность изобретения состоит в том что предлагается способ снижения выброса окисей азота и серы из дымовых газов, который заключается в ударной ионизации потока дымовых газов в электрическом поле пульсирующего коронного разряда, в котором одновременно применяется переменное электрическое поле с эффективной напряженностью в 5...30 kV/cм, и с частотой, определенной по следующей формуле:f = (1,10...1,25),где f частота переменного электрического поля, Гц