CA1075859A - Methode de recuperation des produits chimiques en presence dans les liqueurs epuisees en digestion de la cellulose au sulfate et dans les eaux de blanchiment - Google Patents

Methode de recuperation des produits chimiques en presence dans les liqueurs epuisees en digestion de la cellulose au sulfate et dans les eaux de blanchiment

Info

Publication number: CA1075859A
Authority: CA; Canada
Prior art keywords: sodium; sulfide; waste; liquor; carbonate
Prior art date: 1975-03-18
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA222,340A

Other languages

English (en)

Other versions

CA222340S (en

Inventor

Kaj Henricson

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Ahlstrom Corp

Original Assignee

Ahlstrom Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1975-03-18

Filing date

1975-03-18

Publication date

1980-04-22

1975-03-18 Application filed by Ahlstrom Corp filed Critical Ahlstrom Corp

1975-03-18 Priority to CA222,340A priority Critical patent/CA1075859A/fr

1980-04-22 Application granted granted Critical

1980-04-22 Publication of CA1075859A publication Critical patent/CA1075859A/fr

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 40
239000000126 substance Substances 0.000 title claims abstract description 26
238000004061 bleaching Methods 0.000 title claims abstract description 22
230000029087 digestion Effects 0.000 title claims abstract description 22
239000002351 wastewater Substances 0.000 title claims abstract description 18
239000002699 waste material Substances 0.000 title claims abstract description 12
239000001913 cellulose Substances 0.000 title claims abstract description 9
229920002678 cellulose Polymers 0.000 title claims abstract description 9
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 7
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 76
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 75
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
239000011780 sodium chloride Substances 0.000 claims abstract description 38
229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 36
229910052979 sodium sulfide Inorganic materials 0.000 claims abstract description 24
GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 24
UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 20
238000001704 evaporation Methods 0.000 claims abstract description 16
230000008020 evaporation Effects 0.000 claims abstract description 14
238000002425 crystallisation Methods 0.000 claims abstract description 13
230000008025 crystallization Effects 0.000 claims abstract description 12
238000011084 recovery Methods 0.000 claims abstract description 12
239000000155 melt Substances 0.000 claims abstract description 7
AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 12
239000000920 calcium hydroxide Substances 0.000 claims description 12
229910001861 calcium hydroxide Inorganic materials 0.000 claims description 12
239000012452 mother liquor Substances 0.000 claims description 10
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 9
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
238000000746 purification Methods 0.000 claims description 5
BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
239000000292 calcium oxide Substances 0.000 claims description 4
ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
239000003795 chemical substances by application Substances 0.000 claims description 4
229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
229920006395 saturated elastomer Polymers 0.000 claims description 2
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
238000011065 in-situ storage Methods 0.000 claims 1
235000017550 sodium carbonate Nutrition 0.000 abstract description 27
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 8
239000011734 sodium Substances 0.000 description 8
229910052708 sodium Inorganic materials 0.000 description 8
235000008733 Citrus aurantifolia Nutrition 0.000 description 6
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
235000011941 Tilia x europaea Nutrition 0.000 description 6
239000004571 lime Substances 0.000 description 6
239000011593 sulfur Substances 0.000 description 6
229910052717 sulfur Inorganic materials 0.000 description 6
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
239000000460 chlorine Substances 0.000 description 5
229910052801 chlorine Inorganic materials 0.000 description 5
238000002386 leaching Methods 0.000 description 5
239000010802 sludge Substances 0.000 description 5
239000003518 caustics Substances 0.000 description 4
150000001805 chlorine compounds Chemical class 0.000 description 4
239000013078 crystal Substances 0.000 description 4
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
239000012535 impurity Substances 0.000 description 3
238000000926 separation method Methods 0.000 description 3
238000001816 cooling Methods 0.000 description 2
239000002178 crystalline material Substances 0.000 description 2
150000004691 decahydrates Chemical class 0.000 description 2
238000010586 diagram Methods 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
150000002500 ions Chemical class 0.000 description 2
238000002156 mixing Methods 0.000 description 2
150000002894 organic compounds Chemical class 0.000 description 2
238000003860 storage Methods 0.000 description 2
238000004148 unit process Methods 0.000 description 2
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
241000861718 Chloris <Aves> Species 0.000 description 1
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
239000011575 calcium Substances 0.000 description 1
229910052791 calcium Inorganic materials 0.000 description 1
238000009833 condensation Methods 0.000 description 1
230000005494 condensation Effects 0.000 description 1
229910001882 dioxygen Inorganic materials 0.000 description 1
239000000428 dust Substances 0.000 description 1
238000003912 environmental pollution Methods 0.000 description 1
150000002484 inorganic compounds Chemical class 0.000 description 1
238000005342 ion exchange Methods 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
239000011368 organic material Substances 0.000 description 1
150000002902 organometallic compounds Chemical class 0.000 description 1
238000004537 pulping Methods 0.000 description 1
239000008213 purified water Substances 0.000 description 1
239000010865 sewage Substances 0.000 description 1
238000005406 washing Methods 0.000 description 1

Landscapes

Removal Of Specific Substances (AREA)

CA222,340A 1975-03-18 1975-03-18 Methode de recuperation des produits chimiques en presence dans les liqueurs epuisees en digestion de la cellulose au sulfate et dans les eaux de blanchiment Expired CA1075859A (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA222,340A CA1075859A (fr)	1975-03-18	1975-03-18	Methode de recuperation des produits chimiques en presence dans les liqueurs epuisees en digestion de la cellulose au sulfate et dans les eaux de blanchiment

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA222,340A CA1075859A (fr)	1975-03-18	1975-03-18	Methode de recuperation des produits chimiques en presence dans les liqueurs epuisees en digestion de la cellulose au sulfate et dans les eaux de blanchiment

Publications (1)

Publication Number	Publication Date
CA1075859A true CA1075859A (fr)	1980-04-22

Family

ID=4102564

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA222,340A Expired CA1075859A (fr)	1975-03-18	1975-03-18	Methode de recuperation des produits chimiques en presence dans les liqueurs epuisees en digestion de la cellulose au sulfate et dans les eaux de blanchiment

Country Status (1)

Country	Link
CA (1)	CA1075859A (fr)

1975
- 1975-03-18 CA CA222,340A patent/CA1075859A/fr not_active Expired

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Legal Events

Date	Code	Title	Description
1997-04-22	MKEX	Expiry