Ukukhetha okubalulekile kwama-valve amakhemikhali awo wonke ama-valve ebhola ashiselwe

Ukugqwala kungenye yezingozi zekhanda lemishini yamakhemikhali.Ukunganaki okuncane kungalimaza imishini, noma kubangele ingozi noma inhlekelele.Ngokwezibalo ezifanele, cishe u-60% womonakalo wemishini yamakhemikhali ubangelwa ukugqwala.Ngakho-ke, imvelo yesayensi yokukhethwa kwezinto kufanele inakwe lapho kukhethwa i-valve yamakhemikhali.

Amaphuzu abalulekile okukhethwa kwezinto ezibonakalayo:

1. I-Sulphuric acid iyimpahla ebalulekile yezimboni enohlu olubanzi kakhulu lokusetshenziswa.I-sulfuric acid yokugxila okuhlukene kanye namazinga okushisa anomehluko omkhulu ekugqwaleni kwezinto.I-Carbon steel ne-cast iron inokumelana nokugqwala okungcono, kodwa ayifanele ukugeleza kwe-sulfuric acid ngesivinini esikhulu futhi ayifanele ukusetshenziswa.Izinto ze-valve yepompo.Ngakho-ke, ama-valve epompo e-sulfuric acid ngokuvamile enziwa nge-high-silicon cast iron kanye ne-high-alloy stainless steel.

2. Izinto eziningi zensimbi azimelani ne-hydrochloric acid corrosion.Ngokuphambene nezinto zensimbi, izinto eziningi ezingezona ezensimbi zinokumelana nokugqwala okuhle kwe-hydrochloric acid.Ngakho-ke, amavalvu enjoloba namavalvu epulasitiki ane-hydrochloric acid ayizinqumo ezingcono kakhulu zokuthutha i-hydrochloric acid.

3. I-nitric acid, izinsimbi eziningi zigqwala ngokushesha futhi zibhujiswe ku-nitric acid.Insimbi engagqwali yiyona nto esetshenziswa kakhulu ukumelana ne-nitric acid.Inokumelana nokugqwala okuhle kukho konke ukugxila kwe-nitric acid ekamelweni lokushisa.Ukushisa okuphezulu kwe-nitric acid, i-titanium ne-titanium zivame ukusetshenziswa.Izinto ze-alloy.

4. I-acetic acid ingenye yezinto ezonakalisa kakhulu kuma-organic acid.Insimbi evamile izogqwala kakhulu ku-acetic acid kukho konke ukugxila namazinga okushisa.Insimbi engagqwali iwumsebenzi omuhle kakhulu omelana ne-acetic acid, enokhahlo ekushiseni okuphezulu kanye nokugxiliswa okuphezulu kwe-acetic acid noma enye imidiya ebolayo.Uma kudingekile, ama-valve ensimbi engagqwali ane-alloy ephezulu noma ama-fluoroplastic valves angakhethwa.