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Nyumbani> Sekta Habari> Chagua valves za kudhibiti sugu za kutu za kutu kwa mimea ya kemikali
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Chagua valves za kudhibiti sugu za kutu za kutu kwa mimea ya kemikali

Chagua valves za kudhibiti kutu zenye kutu zenye kutu ni muhimu kwa shughuli salama na bora katika mimea ya kemikali, ambapo vyombo vya habari vya fujo (kama asidi, alkali, na vimumunyisho) vinaweza kudhoofisha vifaa. Hapa kuna maanani muhimu:

1. Utangamano wa nyenzo

Mwili wa valve, trim, na kengele lazima zipinge kemikali maalum zilizoshughulikiwa. Kwa asidi kali (kwa mfano, asidi ya sulfuri), Hastelloy au titanium ni bora kwa sababu ya upinzani wao kwa mazingira ya oksidi. Kwa alkali, 316L chuma cha pua hufanya kazi vizuri, wakati valves zilizo na PTFE zinafaa matumizi ya babuzi au ya juu. Kengele, sehemu muhimu ya muhuri, mara nyingi hufanywa kwa inconel au titani ili kuhimili kubadilika mara kwa mara bila kutu.
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2. Ukadiriaji wa shinikizo na joto

Hakikisha valve inashughulikia shinikizo ya mchakato (kwa mfano, darasa la ANSI 150-600) na safu za joto. Vifaa vya kengele kama Inconel 625 hufanya vizuri kwa joto la juu (hadi 800 ° C) na hali ya shinikizo kubwa, wakati kengele za PTFE ni mdogo kwa joto la chini (kawaida <200 ° C).

3. Ubunifu wa Bellows na Uadilifu

Chagua kengele na muundo wa ply nyingi ili kuongeza uimara na kuzuia kuvuja-muundo wa ply moja unaweza kushindwa chini ya baiskeli za mara kwa mara. Angalia udhibitisho (kwa mfano, ISO 15848) ili kudhibitisha kuzima na kuegemea kwa muda mrefu, muhimu kwa kemikali zenye sumu au tete.

4. Tabia za mtiririko na sizing

Linganisha mgawo wa mtiririko wa valve (CV) na mahitaji ya mtiririko wa mchakato. Kwa udhibiti sahihi katika mteremko wa kutu, chagua miundo kamili ya bandari ili kupunguza kuziba na mmomonyoko.

5. Utaratibu na matengenezo

Chagua Viwango vya Viwanda vya Mkutano wa Valves (kwa mfano, ASME, API) kwa usalama wa mmea wa kemikali. Vipaumbele mifano na kengele rahisi-za-rejea na trim ili kupunguza wakati wa kupumzika, kwani kutu inaweza kuharakisha kuvaa katika mazingira magumu.
Kwa kuzingatia upinzani wa nyenzo, vigezo vya kufanya kazi, na uadilifu wa muundo, waendeshaji wa mimea wanaweza kuchagua valves za kudhibiti kengele ambazo zinahakikisha maisha marefu na usalama katika michakato ya kemikali yenye kutu.
July 24, 2025
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