GB548873A - Improvements in or relating to tubulous boiler plant - Google Patents
Improvements in or relating to tubulous boiler plantInfo
- Publication number
- GB548873A GB548873A GB5320/41A GB532041A GB548873A GB 548873 A GB548873 A GB 548873A GB 5320/41 A GB5320/41 A GB 5320/41A GB 532041 A GB532041 A GB 532041A GB 548873 A GB548873 A GB 548873A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tank
- liquor
- passes
- furnace
- gases
- 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
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 6
- 239000007789 gas Substances 0.000 abstract 4
- 239000000395 magnesium oxide Substances 0.000 abstract 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 3
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 3
- 239000004291 sulphur dioxide Substances 0.000 abstract 3
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 239000002657 fibrous material Substances 0.000 abstract 2
- LPHFLPKXBKBHRW-UHFFFAOYSA-L magnesium;hydrogen sulfite Chemical compound [Mg+2].OS([O-])=O.OS([O-])=O LPHFLPKXBKBHRW-UHFFFAOYSA-L 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000002956 ash Substances 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010411 cooking Methods 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paper (AREA)
Abstract
548,873. Cellulose. BABCOCK & WILCOX, Ltd. April 24, 1941, No: 5320. Convention date, July 27, 1940. [Class 2 (ii)] [Also in Groups XII, XI and XIII] The Specification as open to inspection under Sect. 91 describes a cyclic process, which is disclosed in U.S.A. Specifications 2,285,876 and 2,238,456, for the treatment of cellulosic fibrous material by the sulphite process and for the recovery of products for conversion to magnesium bisulphite for reuse. Fibrous material is fed into a digester 10, Fig. 1 (Cancelled), mixed with magnesium bisulphite and circulated through a steam heater 208. When the cooking operation has been completed the digester is discharged into a tank 12 and the pulp and liquid are then pumped to filters 13, 14, the filtrate from which passes to tanks 16, 17. The liquor from the tank 17 is fed to a wash tower 18 where it contacts with hot gases from a furnace 50 in which concentrated residual liquors are burnt, and the liquor from the tank 17 is thus freed from sulphur dioxide, which passes on with the gases to absorption towers 28, 29. The residual liquor is pumped from tower 18 to a tank 19, where it is neutralized by the addition of magnesium oxide and then passes to a tank 20, evaporators 21 and tank 23, from which it is fed to the boiler furnace 50. Ashes carried from the furnace by the furnace gases and containing magnesium oxide are led to cyclone separators 25 and'then pass to a storage tank 26 and. to a tank 30 where they are mixed with liquor from tank 16 and then supplied to the absorption towers 28, 29. During its passage through the towers the magnesium oxide in suspension combines with the sulphur dioxide in the gases to form magnesium sulphite and bisulphite in solution, which is pumped through a cooler 34 to a filter 40 and thence to a system 43 for absorbing sulphur dioxide from sulphur burners 41. The fortified liquor then passes to a tank 44 and digester acid tank 11. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US548873XA | 1940-07-27 | 1940-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548873A true GB548873A (en) | 1942-10-28 |
Family
ID=21994152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5320/41A Expired GB548873A (en) | 1940-07-27 | 1941-04-24 | Improvements in or relating to tubulous boiler plant |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB548873A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314399A (en) * | 1965-11-15 | 1967-04-18 | Lummus Co | Apparatus |
-
1941
- 1941-04-24 GB GB5320/41A patent/GB548873A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314399A (en) * | 1965-11-15 | 1967-04-18 | Lummus Co | Apparatus |
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