GB1272407A - Recovering values from waste pickle liquor - Google Patents
Recovering values from waste pickle liquorInfo
- Publication number
- GB1272407A GB1272407A GB37550/69A GB3755069A GB1272407A GB 1272407 A GB1272407 A GB 1272407A GB 37550/69 A GB37550/69 A GB 37550/69A GB 3755069 A GB3755069 A GB 3755069A GB 1272407 A GB1272407 A GB 1272407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- concentrate
- iii
- content
- stream
- pickle liquor
- 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
- 235000021110 pickles Nutrition 0.000 title abstract 3
- 239000002699 waste material Substances 0.000 title abstract 3
- 239000012141 concentrate Substances 0.000 abstract 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
1,272,407. Recovering values from waste pickle liquor. PRENCO MFG. CO. 25 July, 1969 [26 Aug., 1968], No. 37550/69. Heading C1A. Waste H 2 SO 4 pickle liquor containing FeSO 4 and free H 2 SO 4 is treated to remove the iron content and to recover H 2 SO 4 by (i) removing a substantial portion of the water content of the liquor by evaporation to form a concentrate, (ii) preheating the concentrate in a closed space to a temperature at least equal to the vaporization temperature of the aqueous constituent of the concentrate at ambient pressure, (iii) atomizing the preheated concentrate in air and subjecting a stream of the atomized concentrate to a pyrodecomposition operation by heating the stream of atomized concentrate in an oxidizing atmosphere to about 3000F. at which the H 2 SO 4 content of the concentrate is decomposed into SO 2 and water vapour and the FeSO 4 content is decomposed into gaseous SO 2 , solid iron oxide particles and water vapour, (iv) separating the iron oxide particles from the effluent stream from (iii), (v) separating SO 2 from the effluent stream and reacting it with oxygen and water to form H 2 SO 4 which is recovered. A (hydro) carbonaceous fuel may be mixed with the concentrate to provide enough heat for step (iii), and the heat from the effluent stream of (iii) may be used for the evaporation in (i). Suitable apparatus is described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75510168A | 1968-08-26 | 1968-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1272407A true GB1272407A (en) | 1972-04-26 |
Family
ID=25037735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37550/69A Expired GB1272407A (en) | 1968-08-26 | 1969-07-25 | Recovering values from waste pickle liquor |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS4918356B1 (en) |
| BE (1) | BE737917A (en) |
| CH (1) | CH520624A (en) |
| DE (1) | DE1942950A1 (en) |
| FR (1) | FR2016382A1 (en) |
| GB (1) | GB1272407A (en) |
| NL (1) | NL6912779A (en) |
| SE (1) | SE358671B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0093909A1 (en) * | 1982-05-03 | 1983-11-16 | Bayer Ag | Process for decomposing diluted sulfuric acid |
| US5078782A (en) * | 1986-04-24 | 1992-01-07 | Berol Nobel (Suisse) S.A. | Pesticidal concentrate compositions |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5262295U (en) * | 1975-10-29 | 1977-05-07 | ||
| DE2643798A1 (en) * | 1976-09-29 | 1978-04-06 | Bayer Ag | METHOD FOR PROCESSING WASTE SULFURIC ACID AND IRON SULFATHEPTAHYDRATE TO FRESH ACID |
-
1969
- 1969-07-25 GB GB37550/69A patent/GB1272407A/en not_active Expired
- 1969-08-01 SE SE10851/69A patent/SE358671B/xx unknown
- 1969-08-21 NL NL6912779A patent/NL6912779A/xx unknown
- 1969-08-22 CH CH1274769A patent/CH520624A/en not_active IP Right Cessation
- 1969-08-23 DE DE19691942950 patent/DE1942950A1/en active Pending
- 1969-08-25 BE BE737917D patent/BE737917A/xx unknown
- 1969-08-25 JP JP44066538A patent/JPS4918356B1/ja active Pending
- 1969-08-25 FR FR6929035A patent/FR2016382A1/fr not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0093909A1 (en) * | 1982-05-03 | 1983-11-16 | Bayer Ag | Process for decomposing diluted sulfuric acid |
| US5078782A (en) * | 1986-04-24 | 1992-01-07 | Berol Nobel (Suisse) S.A. | Pesticidal concentrate compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| CH520624A (en) | 1972-03-31 |
| BE737917A (en) | 1970-02-25 |
| FR2016382A1 (en) | 1970-05-08 |
| JPS4918356B1 (en) | 1974-05-09 |
| SE358671B (en) | 1973-08-06 |
| DE1942950A1 (en) | 1970-04-02 |
| NL6912779A (en) | 1970-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |