GB1336899A - Pollution controlled polysulphide recovery process - Google Patents
Pollution controlled polysulphide recovery processInfo
- Publication number
- GB1336899A GB1336899A GB1999371*[A GB1999371A GB1336899A GB 1336899 A GB1336899 A GB 1336899A GB 1999371 A GB1999371 A GB 1999371A GB 1336899 A GB1336899 A GB 1336899A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquor
- tower
- polysulphide
- white
- evaporated
- Prior art date
- 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
Links
- 229920001021 polysulfide Polymers 0.000 title abstract 4
- 238000011084 recovery Methods 0.000 title abstract 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000007787 solid Substances 0.000 abstract 3
- 241001062472 Stokellia anisodon Species 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000004537 pulping Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000010411 cooking Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 229920005610 lignin Polymers 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000000344 soap Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/03—Papermaking liquor
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Paper (AREA)
Abstract
1336899 Processing spent liquor from a polysulphide pulping process COMBUSTION ENG INC 10 June 1971 [11 June 1970] 19993/71 Heading D2W The spent liquor from a polysulphide pulping process is processed for re-use by means of the following steps (see Fig. 1):- (a) after passing through a blow tank and a drum washer with three filter drums operating in an oxygen-free atmosphere the spent liquor is pre-evaporated to a 25-30% solids content, (b) a recycle stream, derived from the carbonating or stripping towers (see steps (d) and (e)), and containing NaHCO 3 is added to the pre-evaporated liquor to reduce p.H, (c) the spent liquor is passed to a soap skimmer, (d) the skimmed liquor is passed down a carbonating tower wherein the Na 2 CO 3 present in the liquor reacts to form NaHCO 3 with CO 2 fed countercurrent to the liquor from a hot carbonate system at atmospheric to 100 psia and 25-100‹C, (e) the carbonated liquor is fed to a vacuum steam stripping tower to remove H 2 S produced, (f) the p.H of the stripped liquor is increased sufficient to prevent deposition of lignin by addition of NaOH and if necessary white liquor, any Na 2 S introduced in the white liquor being converted to Na 2 S 2 O 3 by low level oxidation with air or oxygen in an oxidising tower, (g) the liquor is evaporated to a 50-55% solids content, (h) the liquor has water removed therefrom to a 70% solids content by direct contact with the flue gases from the recovery furnace (see step i) or by means of an air cascade evaporator in which latter case the use of an oxidising tower is not necessary in step (f), (i) the liquor is fed to a recovery furnace with a steam boiler to produce an Na 2 S/Na 2 CO 3 smelt (j) the smelt is dissolved in water and calcium oxide added and the solution reacted in a causticizer to form a white liquor from which CaCO 3 is filtered and used to produce CO 2 in the hot carbonate system and (k) the vapours from the blow tank, digester, carbonate stripping towers and evaporators containing H 2 S are compressed and converted to elemental sulphur which is added to the white liquir to regenerate the polysulphide cooking liquor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4545570A | 1970-06-11 | 1970-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1336899A true GB1336899A (en) | 1973-11-14 |
Family
ID=21937982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1999371*[A Expired GB1336899A (en) | 1970-06-11 | 1971-06-10 | Pollution controlled polysulphide recovery process |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3650888A (en) |
| JP (1) | JPS5013361B1 (en) |
| CA (1) | CA941106A (en) |
| ES (1) | ES392100A1 (en) |
| FR (1) | FR2096202A5 (en) |
| GB (1) | GB1336899A (en) |
| NO (1) | NO133554C (en) |
| SE (1) | SE391546B (en) |
| ZA (1) | ZA713733B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3884751A (en) * | 1972-04-25 | 1975-05-20 | Texaco Inc | Coking of spent pulping liquors used in the alkaline sulfite process |
| SE434860B (en) * | 1976-11-15 | 1984-08-20 | Mo Och Domsjoe Ab | PROCEDURE FOR EXPOSURE OF CHLORIDES FROM CHEMICALS RECOVERY SYSTEMS BY SODIUM-BASED PREPARATION PROCESSES |
| CH632340A5 (en) | 1979-11-16 | 1982-09-30 | Charmilles Sa Ateliers | Method and apparatus for monitoring the concentration of solid particles suspended in a fluid. |
| FI85515C (en) * | 1990-07-09 | 1996-04-10 | Ahlstroem Oy | Process for controlling the sulphidity of a sulphate cellulose plant |
| US5246542A (en) * | 1991-09-18 | 1993-09-21 | Fosberg Theodore M | Evaporation and recovery process for bleached chemical thermo-mechanical pulp (BCTMP) effluent |
| SE9400383L (en) * | 1994-02-07 | 1995-08-08 | Kvaerner Pulping Tech | Ways to purify a sulphide-containing alkaline liquor from chloride |
| SE9703365D0 (en) * | 1997-09-18 | 1997-09-18 | Kvaerner Pulping Tech | Method in connection with impregnation and digestion of lignocelulosic material |
| US5911853A (en) * | 1997-09-11 | 1999-06-15 | International Paper Company | Method for treating paper mill condensate to reduce the amount of sulfur compounds therein |
| WO1999014423A1 (en) * | 1997-09-18 | 1999-03-25 | Kvaerner Pulping Ab | Polysulfide pulping process |
| FI119915B2 (en) * | 2003-10-03 | 2011-06-15 | Metsae Botnia Ab Oy | Removal of sulfur from the smell gases of a cellulose factory |
| FI122841B (en) * | 2004-10-04 | 2012-07-31 | Metso Paper Inc | Method and apparatus for making cellulosic pulp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2574193A (en) * | 1947-12-06 | 1951-11-06 | Remington Rand Inc | Chemical recovery and control in the kraft pulp process |
| US2999044A (en) * | 1955-08-02 | 1961-09-05 | Jr Theron Tilford Collins | Production of paper pulp |
| US3331732A (en) * | 1962-12-17 | 1967-07-18 | Mo Och Domsjoe Ab | Method of removing hydrogen sulfide from an aqueous solution of alkali sulfide |
| US3448002A (en) * | 1964-06-20 | 1969-06-03 | Domtar Ltd | Pulping process |
| US3514371A (en) * | 1966-03-01 | 1970-05-26 | Katsuo Watanabe | Preparation of kraft process liquor from waste soda liquor from petroleum industries |
-
1970
- 1970-06-11 US US45455A patent/US3650888A/en not_active Expired - Lifetime
-
1971
- 1971-04-21 CA CA110,988A patent/CA941106A/en not_active Expired
- 1971-06-09 ZA ZA713733A patent/ZA713733B/en unknown
- 1971-06-09 ES ES392100A patent/ES392100A1/en not_active Expired
- 1971-06-10 FR FR7121141A patent/FR2096202A5/fr not_active Expired
- 1971-06-10 JP JP46040648A patent/JPS5013361B1/ja active Pending
- 1971-06-10 GB GB1999371*[A patent/GB1336899A/en not_active Expired
- 1971-06-10 NO NO2194/71A patent/NO133554C/no unknown
- 1971-06-10 SE SE7107566A patent/SE391546B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES392100A1 (en) | 1973-11-01 |
| US3650888A (en) | 1972-03-21 |
| FR2096202A5 (en) | 1972-02-11 |
| NO133554C (en) | 1976-05-19 |
| SE391546B (en) | 1977-02-21 |
| CA941106A (en) | 1974-02-05 |
| NO133554B (en) | 1976-02-09 |
| JPS5013361B1 (en) | 1975-05-19 |
| ZA713733B (en) | 1972-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4053352A (en) | Method for producing oxidized white liquor | |
| GB1336899A (en) | Pollution controlled polysulphide recovery process | |
| US3560329A (en) | Process for low sulfide chemical recovery | |
| US2864669A (en) | Method for recovering sulfur and alkali from waste liquors | |
| US2841561A (en) | Recovery of chemicals from smelt solutions | |
| US3650889A (en) | Pollution controlled polysulfide recovery process | |
| US2993753A (en) | Sodium sulphite liquor recovery | |
| US2800388A (en) | Recovery of alkali and sulphur from waste lyes in the manufacture of cellulose with alkali sulphite and alkali bisulphite | |
| US2644748A (en) | Sulfite waste treatment process | |
| US3525666A (en) | Process for preparing kraft pulping liquor from black liquor including separate carbonation with combustion gases and evaporation steps | |
| US2496550A (en) | Methods of recovering chemicals in | |
| US5759345A (en) | Process for treating sulphur-containing spent liquor using multi-stage carbonization | |
| US2824071A (en) | Recovery of chemicals in wood pulp preparation | |
| US2909407A (en) | Method in the recovery of alkali and sulphur by carbonization of melt soda solutions obtained in the manufacture of cellulose | |
| FI57796C (en) | SULFIDITETSKONTROLL | |
| US5366716A (en) | Method for recovering sulphur dioxide from the chemical circulation of a sulphate pulp mill | |
| US3654071A (en) | Process for replacing sodium and sulfur losses and for controlling the sulfide content in sodium- and sulfur-containing cellulosic digesting liquors | |
| US2947656A (en) | Processing of spent cooking liquors | |
| US2611682A (en) | Methods of recovering hydrogen sulfide from sulfide containing soda liquors obtainedin cellulose production | |
| US3133789A (en) | Chemical recovery of waste liquors | |
| NO118473B (en) | ||
| US4049787A (en) | Process for separating sulphur in the form of hydrogen sulphide from clarified green liquor obtained from the combustion of waste liquor | |
| US3959068A (en) | Process and apparatus for recovery of sulfur from a polysulfide pulping operation | |
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| US3822180A (en) | Method for manufacturing sulfite pulp cooking liquor from sulfite pulp spent liquor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |