INTENSIFICATION OF GRAVITATIONAL METHOD OF AMMONIAC WATERS PURIFICATION FROM COAL TAR IMPURITIES
Електронний архів E-archive DonNTU – (Electronic archive Donetsk National Technical University)
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
INTENSIFICATION OF GRAVITATIONAL METHOD OF AMMONIAC WATERS PURIFICATION FROM COAL TAR IMPURITIES
ИНТЕНСИФИКАЦИЯ ГРАВИТАЦИОННОГО МЕТОДА ОЧИСТКИ АММИАЧНЫХ ВОД ОТ СМОЛИСТЫХ ПРИМЕСЕЙ |
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| Creator |
Крутько, Ирина Григорьевна
Пульникова, Юлия Викторовна |
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| Subject |
technological scheme
purification ammoniac water coal tar water emulsions mineral fiber material coalescing filter gravitational settling технологическая схема очистка каменноугольные водосмоляные эмульсии аммиачные воды минеральный волокнистый материал коалесцирующий фильтр гравитационное осаждение |
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| Description |
Ammoniac waters of coke-chemical production, including ammonia-tar liquor and condensate of primary gas coolers (PGC), are made up more than 50% of total effluent of catching chemical products department. Ammoniac waters contain impurities of aromatic tars and oils (coal tar substances) in the number of 300-2200 mg/l. The presence of tars and oils in ammoniac waters complicates their further processing, reduces the effectiveness of technological processes, contaminates equipment with tar deposits. The gravitational method can not provide effective purification of ammoniac waters from fine disperse tar particles which radius is smaller than 20 microns. Therefore, for enlargement of tar phase particles the coalescence was suggested. In earlier works it was proved that mineral fiber material of diabase group (MFD) leads to increased sizes of disperse particles of coal tars and oils, and redistribution of the fraction in the direction of larger particles. The effect of coalescence is 75-78% depending on the temperature, flow rate, packing density of mineral fiber material. It is shown that preliminary processing of ammoniac water by passing it through a coalescing filter intensifies the gravitational settling of coal tar impurities in the settling tanks. Based on theoretical and experimental studies it is suggested to include a coalescing filter on coke-chemical plants technological scheme of ammoniac water purification from coal tar impurities. In the present technological scheme the process of coalescence is auxiliary. However, due to a coalescing filter high efficiency of ammoniac water purification can be provided. Coalescence method can be attributed as a regenerative method, as during the processes tar water emulsion is separated into two phases, one of which is tar. Recycling of tar can be an additional economic achievement in implementation of this method. Показано, что предварительная подготовка аммиачной воды путем пропускания ее через коалесцирующий фильтр интенсифицирует процесс гравитационного осаждения примесей смолистых веществ в отстойниках. На основании теоретических и экспериментальных исследований предложено включить в существующую на коксохимических заводах технологическую схему очистки аммиачной воды от смолистых веществ коалесцирующий фильтр. |
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| Date |
2013-04-11T16:19:01Z
2013-04-11T16:19:01Z 2013 |
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| Type |
Article
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| Identifier |
2074-6652
UDC 628.33, 662.74 http://ea.donntu.edu.ua/handle/123456789/18411 |
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| Relation |
Наукові праці ДонНТУ;Серія: Хімія і хімічна технологія, 2013. - Вип.1(20). - С.152-158
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| Publisher |
Донецк, ДонНТУ
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