Publication detail

Pilot plant long-term test of particulate matter (PM) removal from air stream emerging from granulated fertilizers production (stationary source)

BRUMMER, V. JECHA, D. LEŠTINSKÝ, P. SKRYJA, P. HUDÁK, I.

Czech title

Dlouhodobý test pilotní jednotky pro odstranění tuhých zněčištujících látek (TZL) z proudu vzdušiny vznikající z výroby granulovaných hnojiv (stacionární zdroj)

English title

Pilot plant long-term test of particulate matter (PM) removal from air stream emerging from granulated fertilizers production (stationary source)

Type

conference paper

Language

en

Original abstract

In this contribution, results of the 34 days test of particulate matter (PM) removal from air stream emerging from granulated fertilizers production (NPK and mixed ammonium sulphate fertilizers) are presented. Operator of the plant wanted to replace older wet scrubber preferably by filter bags which can provide waste less operation of the technology, because separated PM can be reintroduced to the production. Because of the assumption of the sticky and problematic deposits formation on the filter bags that could increase excessively the pressure loss, test on the pilot unit with 15 filter bags with pulse-jet bags cleaning was carried out. During the test, various technological conditions were tested. Temperatures, stream humidity, pressure loss of bags and inlet and outlet PM concentrations were monitored. It was find out, that dry cleaning of this air stream is problematic as expected, but feasible. Filter bags were absorbing considerable amount of water from dust stream (fertilizers are granulated by steam and water). This fact leads to hard removable deposits formation and increased pressure loss, but if the stream was preheated by small natural gas burner, the depositions creation was reduced. According to results of the long term test, recommendations for the technological conditions for full scale bag filter were provided for given type of technology and production.

Czech abstract

V tomto příspěvku jsou prezentovány výsledky 34 dnového testu odstranění tuhých znečišťujících částic (TZL) v proudu vzdušiny vystupujícího z výroby granulovaných hnojiv (NPK a síranu amonného). Provozovatel závodu požadoval náhradu starší mokré vypírky suchým čištěním filtračními rukávcemi, které mohou poskytnout bezodpadovou technologii, protože oddělené TZL můžou být zařazeny do zpět do výroby. Vzhledem k předpokladu vzniku lepkavých a problematických nánosů na filtračních rukávcích, které by mohly nadměrné zvýšení tlakové ztráty, byla provedena zkouška na pilotním zařízení s 15 filtračními rukávci s pulse-jet čištěním. Během testu byly zkoušeny různé technologické podmínky. Byla sledována teplota, vlhkost proudu, tlaková ztráta rukávců a vstupní a výstupní koncentrace TZL. Bylo zjištěno, že čištění vzdušiny je problematické, jak se očekávalo, ale proveditelné. Filtrační rukávce absorbovali značné množství vody z odpadního proudu (hnojiva se granulují pomocí páry a vody). Tato skutečnost vede k tvorbě těžko odstranitelných nánosů a zvýšené tlakové ztráty, ale v případě, že proud byl předehřát malým hořákem zemního plynu, depozice byla snížena. Podle výsledků dlouhodobého testu, byly poskytnuty doporučení pro technologických podmínky pro plně provozní zařízení filtru pro daný typ technologie a výroby.

English abstract

In this contribution, results of the 34 days test of particulate matter (PM) removal from air stream emerging from granulated fertilizers production (NPK and mixed ammonium sulphate fertilizers) are presented. Operator of the plant wanted to replace older wet scrubber preferably by filter bags which can provide waste less operation of the technology, because separated PM can be reintroduced to the production. Because of the assumption of the sticky and problematic deposits formation on the filter bags that could increase excessively the pressure loss, test on the pilot unit with 15 filter bags with pulse-jet bags cleaning was carried out. During the test, various technological conditions were tested. Temperatures, stream humidity, pressure loss of bags and inlet and outlet PM concentrations were monitored. It was find out, that dry cleaning of this air stream is problematic as expected, but feasible. Filter bags were absorbing considerable amount of water from dust stream (fertilizers are granulated by steam and water). This fact leads to hard removable deposits formation and increased pressure loss, but if the stream was preheated by small natural gas burner, the depositions creation was reduced. According to results of the long term test, recommendations for the technological conditions for full scale bag filter were provided for given type of technology and production.

Keywords in English

particulate matter, PM, fertilizer, long-term test, operating conditions, pilot plant, case study, dedust, bag filter

RIV year

2015

Released

01.06.2015

Publisher

WIT Press

Location

Southampton, UK

ISBN

978-1-84564-964-7

Book

Air Pollution XXIII

Pages from–to

419–430

Pages count

12

BIBTEX


@inproceedings{BUT114721,
  author="Vladimír {Brummer} and David {Jecha} and Pavel {Leštinský} and Pavel {Skryja} and Igor {Hudák},
  title="Pilot plant long-term test of particulate matter (PM) removal from air stream emerging from granulated fertilizers production (stationary source)",
  booktitle="Air Pollution XXIII",
  year="2015",
  month="June",
  pages="419--430",
  publisher="WIT Press",
  address="Southampton, UK",
  isbn="978-1-84564-964-7"
}