I. Ukulawulwa komugqa wokukhiqiza.
① Niniumshini wamagilavu ​​we-nitrile uyathengiswaIzinga lokushisa likawoyela obhayela lifinyelela ku-190 ℃, isivinini sokukhiqiza esingu-≤m ≤65pcs/min.
②Lapho izinga lokushisa likawoyela obhayela lingaphansi kuka-145 ℃, isivinini kufanele sincishiswe ngokuhambisana nezinga lokumiswa kwefilimu yenjoloba.
③ lapho izinga lokushisa likawoyela kubhayela lingaphansi kuka-130 ℃ kufanele lithathwe ngokushesha ukuze liyeke ukucutshungulwa.
Okwesibili, ukukhulelwa kwesisombululo se-nitric acid: ukuhlushwa kwe-nitric acid kufanele kulawulwe ku-3% -4%, ukwengeza isisombululo se-nitric acid ethangini le-nitric acid kumele kulungiselelwe kusengaphambili nge-concentration efanayo yesisombululo, umqhubi uvinjelwe ngokuqinile ukwengeza amanzi noma i-nitric acid ethangini ngokuthanda.
Okwesithathu, ukumithisa amanzi ane-alkaline: 5-10Kg ye-alkali yengezwa ethangini le-alkali ekushintsheni ngakunye ngesikhathi sokukhiqiza okujwayelekile, kanye nesikhathi esi-1 ngemuva kwamahora ama-4 ekushintsheni okulandelayo.
Okwesine, ukuxubha isikhunta ngesandla: ① izinga lokushisa lethangi lebhulashi kufanele lilawulwe ku-45 ± 15 ℃
②Amanzi okugeza isikhunta kufanele agcinwe echichima futhi avuselelwe njalo ngekhwalithi yamanzi, futhi ikhwalithi yamanzi kufanele ibuyekezwe kahle kanye njalo emahoreni angu-8.
③Amabhulashi okugeza isikhunta kufanele ahlolwe njalo ukuthi izinwele azigqokile yini ukuze kuqinisekiswe umphumela wokuxubha.
④Amabhulashi okugeza isikhunta anqatshelwe ngokuphelele ukungcoliswa izinto zikawoyela.
Amanzi ashisayo acwilayo amathathu.
① Ukushisa kwethangi lamanzi ashisayo kufanele kulawulwe ngaphakathi kwebanga elingu-80 ± 15 ℃, ikhwalithi yamanzi ivuselelwa njalo ukuze kugcinwe isimo sokuchichima.Isikhunta ngasinye sokugeza izandla nge-asidi sizoshintshwa isikhathi esingu-1.
Okwesine, ukukhulelwa kwe-starch coagulant.
① isilawuli sokuqukethwe se-starch coagulant CaCL2 ku-8±3%.
②Imfuneko yesitashi coagulant lokushisa 65±15℃.
③ I-starch coagulant kufanele ishukunyiswe kahle kanye njalo ngemizuzu engama-50-60.
③ i-starch coagulant njalo ezinsukwini ezi-4-8 ukuze ibuyekeze isikhathi esingu-1.
V. Isitashi coagulant drying: ① isikhunta ngesandla esiphuma kuhhavini kufanele sigcinwe somile kodwa isandla sibumba umuzwa wokuba manzi kancane.