1. Ama-valve anqunyiwe afanele amapayipi noma amadivayisi anezinga lokushisa eliphezulu kanye nemidiya yokucindezela okukhulu. Njengezimboni zamandla ashisayo, izimboni zamandla enuzi, izinga lokushisa eliphezulu kanye namapayipi okucindezela okukhulu kwezinhlelo ze-petrochemical.
2. Ama-valve eglobhu asetshenziswa kumapayipi lapho ukumelana ne-convection kungadingeki ngokuqinile. Okungukuthi, ukulahlekelwa kwengcindezi akunakwa.
3. Ama-valve enaliti, ama-valve ensimbi, ama-valve esampula kanye nama-valve enaliti yokucindezela kuyakhethwa kumavalvu amancane.
4. Kukhona ukulawulwa kokugeleza noma ukulawulwa kwengcindezi, kodwa ukunemba kokulawula akuphezulu, futhi ububanzi bepayipi buncane kakhulu. Epayipini elinephaseji elincane elingaphansi kuka-50 mm, i-valve yokusika kufanele ikhethwe.
5. I-valve yeglobhu ye-angular yokucindezela okuphezulu noma i-valve ye-angular throttle valve enengcindezi ebizwa ngokuthi i-PN160 16 MPa noma i-PN320 32 MPa kufanele ikhethelwe umanyolo wamakhemikhali amancane namakhulu ekukhiqizeni izimboni zokwenziwa.
6. Ku-workshop ye-desiliconization kanye ne-coke-prone pipeline yenqubo ye-alumina Bayer, kulula ukukhetha i-valve yeglobhu yamanje noma i-throttle valve eqondile enomzimba we-valve ohlukanisiwe, isihlalo esifinyelelekayo kanye nepheya yokuvala i-carbide.
7. Emisebenzini yokuphakelwa kwamanzi nokushisa ezakhiweni zasemadolobheni, amapayipi okuqamba adlula amancane, futhi amavalvu eglobhu, amavalvu ebhalansi noma ama-plunger valve angakhethwa, njengamapayipi amapayipi okuzisholo adlula ngaphansi kuka-150 mm.
Isikhathi sokuthumela: Jul-11-2019
