GB762609A - Method of treating boiler feed water - Google Patents
Method of treating boiler feed waterInfo
- Publication number
- GB762609A GB762609A GB11146/54A GB1114654A GB762609A GB 762609 A GB762609 A GB 762609A GB 11146/54 A GB11146/54 A GB 11146/54A GB 1114654 A GB1114654 A GB 1114654A GB 762609 A GB762609 A GB 762609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- monohydrazine
- hydrazine
- orthophosphate
- orthophosphite
- dihydrazine
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/16—Hydrazine; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
- C23F11/187—Mixtures of inorganic inhibitors
- C23F11/188—Mixtures of inorganic inhibitors containing phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
Abstract
Hydrazine salts of phosphorus acids and of partial esters of phosphorus acids are used for deaerating boiler feed water. Salts specified are monohydrazine metaphosphate, monohydrazine dihypophosphite, tetrahydrazine pyrophosphate, dihydrazine pyrophosphate, monohydrazine orthophosphate, monohydrazine orthophosphite, dihydrazine orthophosphite and hydrazine methyl, isopropyl and butyl orthophosphate, the first four of which are alleged to be novel. The salts may generally be prepared by interacting hydrazine or hydrazine hydrate with a phosphorus acid in the presence of an organic solvent medium, for example methanol or ethanol. Monohydrazine metaphosphate may be prepared by dehydrating monohydrazine orthophosphate, for example by heating to 160-170 DEG C. under a pressure of 10 in. of Hg for 8 hours.ALSO:Dissolved oxygen is removed from boiler feed water by adding thereto, preferably after deaeration, a hydrazine salt of a phosphorus acid or of an organic partial ester of a phosphorus acid. An excess of 150-200 per cent of hydrazine salt is preferably employed. Salts specified are monohydrazine metaphosphate, monohydrazine dihypophosphite, tetrahydrazine pyrophosphate dihydrazine pyrophosphate, monohydrazine orthophosphate, monohydrazine orthophosphite, dihydrazine orthophosphite and hydrazine methyl, isopropyl and butyl orthophosphate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US762609XA | 1953-04-17 | 1953-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB762609A true GB762609A (en) | 1956-11-28 |
Family
ID=22130884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11146/54A Expired GB762609A (en) | 1953-04-17 | 1954-04-15 | Method of treating boiler feed water |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1098491A (en) |
GB (1) | GB762609A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1082235B (en) * | 1958-09-06 | 1960-05-25 | Henkel & Cie Gmbh | Use of organic acylation products of phosphorous acid or its derivatives as complexing agents for metal ions |
-
1954
- 1954-04-15 GB GB11146/54A patent/GB762609A/en not_active Expired
- 1954-04-17 FR FR1098491D patent/FR1098491A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1082235B (en) * | 1958-09-06 | 1960-05-25 | Henkel & Cie Gmbh | Use of organic acylation products of phosphorous acid or its derivatives as complexing agents for metal ions |
Also Published As
Publication number | Publication date |
---|---|
FR1098491A (en) | 1955-07-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES385959A1 (en) | Phosphates | |
GB979908A (en) | Improved process for the production of ethyl alcohol | |
GB665248A (en) | Improvements in or relating to the fractionation of mixtures of organic compounds of differing degrees of unsaturation | |
US2396994A (en) | Condensation products of hydroxy carboxylic acids | |
GB958225A (en) | Improvements in the production of ª‡/ª‰-ethylenically unsaturated carboxylic acids | |
GB762609A (en) | Method of treating boiler feed water | |
ES343513A1 (en) | 1,6-dimethyl-2,3-dihydro-10alpha-ergoline derivatives | |
GB1003705A (en) | Process for the after-treatment of phosphate coatings | |
GB1193345A (en) | New Salts of Cationic Dyestuffs and Process for their Preparation | |
US2968580A (en) | Process for increasing the waterresistance of leather | |
GB728997A (en) | Process for the esterification of dicarboxylic acids of high boiling and decomposition point with mono- or polyhydric alcohols | |
GB859467A (en) | Improvements in or relating to drying oils | |
GB1358333A (en) | Production of organic solution of percarboxylic acid | |
US2330452A (en) | Method of making mercuric naphthenate | |
US2122408A (en) | Gasoline antioxidant | |
ES257147A1 (en) | Procedure for obtaining indol derivatives containing phosphorus (Machine-translation by Google Translate, not legally binding) | |
DE647035C (en) | Process for the acetylation of cellulose using acetic anhydride after pretreatment with acetic acid in the heat | |
GB1065018A (en) | Process for preparing an imidazole derivative | |
ES266945A1 (en) | Procedure for obtaining tiaxyanene derivatives (Machine-translation by Google Translate, not legally binding) | |
GB1027893A (en) | Process for preparing dimethylindans and products containing dimethylindans when prepared by said process | |
GB682009A (en) | Stabilisation of cellulose esters | |
ES295275A1 (en) | A procedure for the preparation of polyamides by polymerization of dodecanolactama (Machine-translation by Google Translate, not legally binding) | |
GB567575A (en) | Improvements in and relating to the production of hydroxy carboxylic acids | |
GB657827A (en) | Improvements in or relating to the manufacture of organic acid esters of cellulose | |
ES266100A1 (en) | Recovery of formaldehyde and hydroxylated compounds |