Kev siv ntau yam thiab siv sodium hydroxide

Kev siv ntau yam thiab siv sodium hydroxide

YANGZHOU EVERBRIGHT CHEMICAL CO., LTD.

Caustic soda ntsiav tshuaj yog ib hom caustic soda, tshuaj lub npe sodium hydroxide, yog soluble alkali, tsis tshua muaj corrosive, yuav siv tau raws li acid neutralizer, nrog masking agent, precipitating agent, nag lossis daus masking agent, xim agent, saponification agent, peeling agent, detergent thiab lwm yam

Ntau yam heev.Kev siv cov ntsiav tshuaj caustic soda yog cov ntsiab lus hauv qab no:

1, papermaking:

papermaking raw cov ntaub ntawv yog ntoo los yog nyom nroj tsuag, cov nroj tsuag no ntxiv rau cellulose, tab sis kuj muaj ib tug ntau npaum li cas ntawm non-cellulose (lignin, pos hniav, thiab lwm yam).Flake alkali yog siv rau delignification, thiab cov fiber ntau tsuas yog tau los ntawm kev tshem cov lignin los ntawm ntoo.Cov tsis-cellulose tivthaiv tuaj yeem yaj los ntawm kev ntxiv cov kua dej qab ntsev ntsev, kom cov cellulose ua cov khoom tseem ceeb ntawm cov tawv nqaij tuaj yeem npaj tau.

2, Refined Petroleum:

Tom qab cov khoom siv roj av tau ntxuav nrog sulfuric acid, qee cov tshuaj acidic yuav tsum tau ntxuav nrog cov ntsiav tshuaj alkali tov, thiab tom qab ntawd ntxuav kom tau cov khoom ua kom zoo.

3. Textile:

paj rwb thiab linen fabrics yog kho nrog concentrated sodium hydroxide (caustic soda) tov los txhim kho fiber ntau zog.Artificial fibers xws li paj rwb, ntaub plaub, rayon, thiab lwm yam, feem ntau yog viscose fibers, lawv yog ua los ntawm cellulose (xws li pulp), caustic soda, carbon disulfide (CS2) raws li raw cov ntaub ntawv, ua los ntawm viscose, los ntawm spinning, condensation.

4, printing thiab dyeing:

paj rwb ntaub nrog alkaline kev kho mob, tuaj yeem tshem tawm hauv cov paj rwb ntaub wax, roj, hmoov txhuv nplej siab thiab lwm yam khoom, thaum ua kom cov mercerization xim ntawm cov ntaub, kom dyeing ntau uniform.

5, ua xab npum:

Lub ntsiab tseem ceeb ntawm xab npum yog sodium ntsev ntawm cov roj fatty acids siab heev, feem ntau yog ua los ntawm cov roj thiab alkali ntsiav tshuaj ua raw cov ntaub ntawv los ntawm cov tshuaj tiv thaiv saponification.Ntxiv nrog rau cov ntsev ntsev uas muaj roj ntau, xab npum kuj tseem muaj rosin, iav dej, txuj lom, dyes thiab lwm yam khoom ntim.Raws li cov qauv, cov fatty acid sodium ntau dua muaj qhov tsis muaj polar hydrophobic (piv txwv li hydrocarbon) thiab ib feem ntawm polar hydrophilic (carboxyl pawg).Cov pab pawg hydrophobic muaj oleophilic zog.Thaum lub sij hawm ntxuav, cov roj hauv av yog nplawm thiab tawg mus rau hauv cov roj me me, thiab tom qab kev sib cuag nrog cov xab npum, pawg hydrophobic (hydrocarbon pawg) ntawm cov roj fatty acid ntau dua sodium molecules tau muab tso rau hauv cov roj tee, thiab cov roj molecules yog. ua ke los ntawm van der Waals rog.Cov pab pawg hydrophilic (carboxyl pawg), uas tau yooj yim yaj hauv dej, txuas ntxiv sab nraum cov roj poob thiab tso rau hauv dej.Cov khoom tseem ceeb ntawm xab npum yog NaOH, tab sis NaOH tsis yog xab npum.Nws cov tshuaj aqueous yog greasy thiab siv tau los ua xab npum.Soap yog ib qho emulsifier.Lub hauv paus ntsiab lus yog saponification cov tshuaj tiv thaiv CH3CO0CH2CH3 + NaOH = CH3COONa + CH3CH2OH, thiab CH3COONa yog cov khoom muaj nyob hauv xab npum.

6, chemical kev lag luam:

ua hlau sodium, electrolytic dej yog siv cov ntsiav tshuaj ntawm alkali.Kev tsim ntau cov ntsev inorganic, tshwj xeeb tshaj yog kev npaj ntawm qee cov ntsev ntsev (xws li borax, sodium silicate, sodium phosphate, sodium dichromate, sodium sulfite, thiab lwm yam) yog siv hauv ntsiav tshuaj alkali.Nws kuj yog siv nyob rau hauv cov synthesis ntawm dyes, tshuaj thiab organic intermediates.

7, metallurgy kev lag luam:

Feem ntau los hloov cov active tivthaiv ntawm cov ore mus rau soluble sodium ntsev, thiaj li yuav tshem tawm cov insoluble impurities, yog li ntawd, feem ntau yuav tsum tau ntxiv alkali ntsiav tshuaj.Piv txwv li, nyob rau hauv cov txheej txheem smelting ntawm txhuas, kev npaj ntawm cryolite thiab kev kho mob ntawm bauxite yog siv.

8, kev siv cov txiv qaub los txhim kho cov av:

Nyob rau hauv cov av, vim hais tias cov organic teeb meem nyob rau hauv lub decomposition txheej txheem yuav tsim organic acids, weathering ntawm minerals kuj tsim acidic tshuaj.Tsis tas li ntawd, kev siv cov chiv tsis zoo xws li ammonium sulfate, ammonium chloride, thiab lwm yam, yuav ua rau cov av acidic.Kev siv cov txiv qaub zoo tuaj yeem ua rau cov kua qaub hauv cov av, ua kom cov av tsim nyog rau kev loj hlob ntawm cov qoob loo, thiab txhawb kev nthuav tawm ntawm cov kab mob.Tom qab qhov nce ntawm Ca2 + nyob rau hauv cov av, nws muaj peev xwm txhawb lub condensation ntawm av colloid, uas yog conducive rau tsim ntawm aggregates, thiab nyob rau tib lub sij hawm, nws muaj peev xwm muab cov calcin xav tau rau cov nroj tsuag loj hlob.

9. Alumina ntau lawm:

NaOH tov yog rhaub kom yaj alumina hauv bauxite thiab tau txais sodium aluminnoj tshuaj.Tom qab cov tshuaj tau muab cais tawm ntawm qhov seem (dej av), qhov kub thiab txias yog txo, aluminium hydroxide yog ntxiv raws li cov noob siv lead ua, tom qab lub sijhawm ntev ntawm kev nplawm, sodium aluminate decomposed rau hauv aluminium hydroxide, ntxuav, thiab calcined ntawm 950 ~ 1200 ℃ , cov tiav aluminium oxide tau txais.Cov tshuaj tom qab nag lossis daus ntawm aluminium hydroxide hu ua niam cawv, uas yog evaporated thiab concentrated thiab rov ua dua.Vim qhov sib txawv crystalline qauv ntawm diaspore, diaspore thiab diaspore, lawv solubility nyob rau hauv caustic soda tov yog sib txawv heev, yog li ntawd nws yog tsim nyog los muab txawv dissolution tej yam kev mob, feem ntau sib txawv dissolution kub.Cov diaspore hom bauxite tuaj yeem yaj ntawm 125 ~ 140C, thiab diaspore hom bauxite tuaj yeem yaj ntawm 240 ~ 260 ℃ thiab ntxiv cov txiv qaub (3 ~ 7%).

10, ceramics:

caustic soda nyob rau hauv lub luag hauj lwm ntawm ceramics muaj ob lub ntsiab lus: thawj, nyob rau hauv lub firing txheej txheem ntawm ceramics, caustic soda raws li ib tug diluent.Qhov thib ob, qhov chaw ntawm cov khoom siv hluav taws xob raug rho tawm haujlwm yuav raug khawb los yog ntxhib heev, thiab tom qab ntxuav nrog dej qab zib, cov nplais ceramic yuav smoother.

11, disinfection:

tus kab mob protein denaturation.Cov no feem ntau yog siv los ntxuav thiab tua cov fwj hauv kev lag luam cawv.

12, ntxiv rau cov dej khib nyiab:

muaj zog sodium oxide los kho tus nqi ph, dej phwj tuaj kho, kom cov peev txheej rov ua dua tshiab.

13, tshuaj npaj, muaj additives:

Cov ntsiav tshuaj alkali feem ntau yog siv rau hauv kev lag luam kws tshuaj kom alkalize cov kev daws teeb meem lossis kho cov nqi pH ntawm cov tshuaj tshuaj.

14, electroplating, tungsten refining.

Alkali ntsiav tshuaj nyob rau hauv hlau plating raws li electroplating kua, ua si lub luag hauj lwm ntawm tus neeg xyuas pib!

15, tsim cov ntaub lo lo ntxhuav, tsim cov paj rwb rayon.

16. Tawv kev lag luam (Kev taw qhia txog ob qho kev siv tshuaj alkali):

(1) Rau cov txheej txheem rov ua dua tshiab ntawm tannery pov tseg cov hmoov tshauv, tsau thiab ntxiv sodium sulfide aqueous tov hauv cov txheej txheem nthuav dav uas twb muaj lawm

Nyob nruab nrab ntawm ob kauj ruam ntawm cov txiv qaub hmoov soaking kev kho mob, kev siv 30% sodium hydroxide tov nrog tare hnyav 0.3-0.5% yog nce kom cov tawv nqaij fiber ntau nthuav kom tau raws li cov txheej txheem thiab txhim kho qhov zoo ntawm cov khoom semi-tiav.
(2) Raws li alkaline nruab nrab thiab ib qho nruab nrab, ntxiv cov dej rau lub reactor, thiab tom qab ntawd kub txog 90 ° C los ntawm chav, do thaum ntxiv polyvinyl cawv, thiab tom qab ntawd txias mus rau 80 ° C tom qab polyvinyl cawv. yaj tag.Tom qab stirring, ntxiv hydrochloric acid nyob rau hauv ib tug trickle, ntxiv mus do rau 20 mus rau 30 feeb, thiab ntxiv tus nqi ntawm formaldehyde dej.Khaws nws sov ntawm 78 ~ 80 ℃, cia nws hnov ​​​​mob rau 40 ~ 50 feeb, ntxiv 10% sodium hydroxide tov rau nruab nrab, txias nws mus rau 60 ~ 70 ℃, ces ntxiv cov mis urea rau amino kho, thiab lim. cov kua nplaum los ntawm cov xov paj rau khaws cia siv.

17, polyester chemical kev lag luam:

siv rau kev tsim cov formic acid, oxalic acid, borax, phenol, sodium cyanide thiab xab npum, hluavtaws fatty acids, hluavtaws detergent, thiab lwm yam.

18, textile printing thiab dyeing kev lag luam:

siv los ua paj rwb desizing tus neeg saib xyuas, tus neeg sawv cev kub hnyiab, tus neeg saib xyuas mercerizing thiab txo cov xim, Haichang xiav dye hnyav.

19, smelting kev lag luam:

siv los tsim aluminium hydroxide, aluminium oxide thiab hlau kho tus neeg sawv cev.

20, kev lag luam kev lag luam,:

siv los ua acid neutralizer, decolorizing tus neeg sawv cev, deodorizing tus neeg sawv cev.

21, Adhesive kev lag luam:

siv ua hmoov txhuv nplej siab gelatinizer, neutralizer.

22, tsim phosphate, tsim manganate.

23. Regeneration ntawm qub roj hmab.

24, tuaj yeem siv tau ua citrus, txiv duaj tev tus neeg saib xyuas thiab decolorizing tus neeg sawv cev, deodorant.

25, ntsiav tshuaj alkali kuj tseem siv rau hauv kev tsim tshuaj tua kab.