The recoil of board type heat exchanger washs pipeline to transform

Water and canal of acerbity pass in and out all are DN300, in be apart from far of 1 M of board type heat exchanger, next floor that water pass in and out provides have the blowdown canal of DN50 and a powerful person, but in be being produced actually, end giving water is not used, the end that drink water is used do not have the effect. 300 Kt of smeltery of prosperous of gold of company of cupreous hill coloured vitriolic new series is in ／ A put into production after 4 months, dry the board type heat exchanger that sucks a system is acerbity side and water side all appeared of different level jam, especially 2 board type heat exchanger that draw 2 parallel connection with common tower export acerbity Wen Yiyuan Yuan Chao designs a value too, need Qing Dynasty is blocked up. The basis produces a situation, undertake clear blocking up to water side above all. Making a DNI50, one aspect of the matter is flange another end is line of look follow in a continuous line is long the short steel tube that makes an appointment with 150 Mil, one aspect of the matter of will relevant line solders wanting part of starting a hole, shut water imports and exports butterfly a powerful person, in short canal with gas cutting immanent DN300 is in charge of on starting a hole, draw out board type heat exchanger to enter what water side filter falls to jam with the hand content, open water to export butterfly a powerful person next, with 0. The backwater recoil of 02 MPa is washed, make a few little grain jam content washs water to be poured out of from DNI50 blowdown nozzle together along with the recoil of larger flow. After be being cleaned, the hand that installs a DNI50 in sewage draining exit uses butterfly a powerful person. The effect after the board type heat exchanger after cleaning throws production is distinct, in water side imports and exports when a standard-sized sheet of butterfly a powerful person, thermal drop giving water to 37 ℃ , export acerbity Wen Wei 60 ℃ , can satisfy normal production. The analysis thinks, it is to rinse the end that drink water instead pressure is too low, 2 it is a canal way is too small. Accordingly, should increase a diameter of blowdown canal and a powerful person, will discharge opening position to alter next aspect that are set in the DN300 entrance canal that is apart from 200 Mm of board type heat exchanger to be in, in order to facilitate blowdown or draw out the side that drink water to filter with the hand directly those who fall is sundry. After passing 2 days, 2 absorb the acid on the tower to measure pelt, keep normal production hard, jam through board type heat exchanger considering as acerbity side after the platoon is checked step by step serious. Undertake clear blocking up to acerbity side then, the one aspect of the matter that in DN300 acid the side bottom of inlet tube is apart from place of 200 Inm of board type heat exchanger to solder to be made by 316L material is flange another end is line of look follow in a continuous line is long the short steel tube that makes an appointment with 150 Mln, it is with plasma cut machine inside short canal starting a hole, wear acid resistant long rubber glove is drawn out jam content, next the iron pipe of tall silicon casting of a few paragraphs of DN200 passes reoccupy flange connection, will rinse acid to be brought to finished product acid to reserve instead directly subterranean chamfer, make up in this paragraph of pipeline at the same time the stainless steel ball valve of 2 DN200. After recoil washs pipeline to had been installed, above all heat exchanger of board type of L of a standard-sized sheet is acerbity side imports and exports butterfly a powerful person, maintain heat exchanger of 2 board type to import butterfly a powerful person to shut, next a standard-sized sheet exports butterfly a powerful person, and a standard-sized sheet the ball valve of DN200 blowdown stainless steel on acerbity inlet tube of heat exchanger of 2 board type, start acerbity pump to undertake recoil is washed next. 0. The recoil of 2MPa washs acid to export a canal to flow to acerbity inlet tube from the acid of heat exchanger of 2 board type, rinse and take away small fragment, flow direction of ball valve of classics DN200 blowdown is communal discharge cop to reserve to finished product acid again subterranean chamfer precipitates. The method with same reoccupy rinses heat exchanger of 1 board type. Rinse entirely end to throw production afresh, the effect is very good. Use this kind of method to want than unpick and wash simple, OK and online rinse, and won't cause fluid sealant of board type heat exchanger to wait fragile the attaint of easy ageing part.

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