Ihe chọrọ nka na ụzụ maka sodium formaldehyde sulphoxylate-Kitty

1.2Raw ihe na teknụzụ chọrọ:

Sodium metabisulfite (Na2S2O5): Ọkwa ụlọ ọrụ nwere ọdịnaya nke> 64% (n'usoro nke SO2).

Ihe ngwọta formaldehyde mmepụta ihe: ọkwa mbụ ma ọ bụ nke abụọ.

Zinc metal ntụ ntụ: 98% ngụkọta zinc, ọ bụghị ihe na-erughị 94% zinc metal, zinc ntụ ntụ nwere ọdịdị isi awọ.

1.3 Usoro mmepụta na njikwa

Mmepụta nke sodium formaldehydesulphoxylate site na usoro a na-agụnye usoro atọ: mgbasa-mbelata mmeghachi omume mgbakwunye, nkewa mmiri siri ike na evaporation na crystallization.

(1) Mgbasa-mbelata mmeghachi omume mgbakwunye: a na-eme mmeghachi omume ahụ na reactor nwere eriri poselin na-akpali akpali.

Dị ka akụkụ ụfọdụ si dị, sodium metabisulphite, mmiri, zinc ntụ ntụ na formaldehyde ngwọta na-agbakwunyere na kettle mmeghachi omume, na-agbakwunye ụfọdụ ihe mgbakwunye iji mee ngwa ngwa mmeghachi omume na ọgbọ nke sodium formaldehydesulphoxylate. Mgbe agbakwunyere ihe niile, mmeghachi omume na-ekpo ọkụ n'ụzọ na-apụtaghị ìhè site na uzuoku na ketulu a na-emechi emechi na-akpalite mgbe niile na ọnọdụ okpomọkụ mgbe niile mgbe okpomọkụ nke ihe ngwọta na kettle na-ebili ruo 95 ° C.

A na-emeghachi ihe ndị a gburugburu2h wee were nlele maka nyocha.

Nhazi mmeghachi omume bụ:

Na2S2O5+2Zn+2CH2O+6H2O=2NaHSO2-CH2O-2H2O+ZnO↓+Zn(OH)2↓

N'oge mmeghachi omume, na mgbakwunye na mmepụta nke sodium formaldehydesulphoxylate, zinc ntụ ntụ na-etinye aka na mmeghachi omume na-agbanwe ghọọ zinc oxide na zinc hydroxide.

Dị ka zinc ntụ ntụ na-agbakwunyere nke ukwuu, a ka nwere obere zinc ọla ma anyị na-akpọ ihe a siri ike zinc sludge.

(2) Nkewa mmiri siri ike: Mgbe emechara mmeghachi omume ahụ, a na-eji mmiri mee ka ọ dị jụụ na-apụtaghị ìhè.

A na-ebelata okpomọkụ nke ihe ahụ n'okpuru 50 Celsius maka nkewa siri ike-mmiri. N'ihi ọdịdị na-emebi emebi nke ngwọta, a na-eme nkewa siri ike-mmiri mmiri site na iji hydraulically pressurized plastic plate rubber frame filter. A na-agbanye nzacha ahụ na tankị nchekwa mmiri ruru eru. Mgbe edozichara ngwọta ahụ na mmiri mmiri ruo oge ụfọdụ wee kpochaa nke abụọ iji nye ngwọta doro anya dị ọcha maka evaporation na itinye uche.

(3) Evaporation na itinye uche, jụrụ na crystallisation: sodium formaldehydesulphoxylate ngwọta na nchekwa tank na-agbaba n'ime agụụ evaporation arịa site agụụ.

Na-ekpo ọkụ na-apụtaghị ìhè site na uzuoku, usoro evaporation na-achịkwa okpomọkụ dị n'okpuru 65 Celsius. Mgbe itinye uche nke ihe ngwọta na evaporator ruru ihe ndị a chọrọ, a na-etinye uche n'ime crystalliser, dị jụụ na crystallized na ọnụ ụlọ okpomọkụ na nnukwu iberibe a na-egweri, mgbe ahụ, a na-ewere ihe nlele ma nwalee dịka ọkọlọtọ, na ngwaahịa ndị ruru eru bụ. juru n'ọnụ.