JPS56145106A - Preparation of aqueous solution of calcium nitrite - Google Patents
Preparation of aqueous solution of calcium nitriteInfo
- Publication number
- JPS56145106A JPS56145106A JP4588680A JP4588680A JPS56145106A JP S56145106 A JPS56145106 A JP S56145106A JP 4588680 A JP4588680 A JP 4588680A JP 4588680 A JP4588680 A JP 4588680A JP S56145106 A JPS56145106 A JP S56145106A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- slaked lime
- slurry
- oxidized
- calcium nitrite
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/085—Acids or salts thereof containing nitrogen in the anion, e.g. nitrites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Treating Waste Gases (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Chemically Coating (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
PURPOSE: To prepare a high purity aqueous solution of calcium nitrite, in high efficiency, by absorbing a gas containing NO and NO2 obtained by the oxidation of ammonia, in a slaked lime slurry of a specific concentration under pressure at high temperature, and reacting the components.
CONSTITUTION: A gas mixture containing 5W12vol% of NO and NO2 wherein the molar ratio of NO/NO2 is 1.6W2.5 and having a temperature of 190W300°C is prepared by the oxidation of ammonia. The gas is introduced continuously into a slurry containing 20W40wt% of slaked lime under a pressure of 2W10kg/cm2 at a reaction temperature of 75W110°C, and made to react until the concentration of the remaining slaked lime decreases to 2W10wt%. Unabsorbed gas is recovered, chlorine gas is introduced into the recovered gas if necessary, and the gas mixture is oxidized at 85W150°C to obtain the oxidized gas wherein the total contents of NO and NO2 is 1W5vol% and the NO/NO2 molar ratio is 1.6W2.5. The oxidized gas is introduced into the aqueous slurry containing 2W10wt% of the residual slaked lime under a pressure of 2W10kg/cm2 keeping the reaction temperature at 75W110°C until the concentration of the remaining slaked lime decreases to ≤3wt%. The slurry is filtered to obtain the objective calcium nitrite solution.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55045886A JPS5850926B2 (en) | 1980-04-08 | 1980-04-08 | Production method of calcium nitrite aqueous solution |
DK398680A DK156168C (en) | 1980-04-08 | 1980-09-19 | PROCEDURE FOR PREPARING Aqueous SOLUTION OF CALCIUM NITRIT |
DE3036605A DE3036605C2 (en) | 1980-04-08 | 1980-09-29 | Process for preparing an aqueous solution of calcium nitrite |
GB8031397A GB2074993B (en) | 1980-04-08 | 1980-09-29 | Process for producing aqueous solution of calcium nitrite |
CA361,175A CA1114133A (en) | 1980-04-08 | 1980-09-29 | Process for producing aqueous solution of calcium nitrite |
SE8006790A SE438843B (en) | 1980-04-08 | 1980-09-29 | PROCEDURE FOR PREPARING A WATER SOLUTION OF CALCIUM NITRIT WITH HIGH PURITY AND HIGH CONCENTRATION |
NO802873A NO154832C (en) | 1980-04-08 | 1980-09-29 | PROCEDURE FOR THE PREPARATION OF AN Aqueous SOLUTION OF CALCIUM NITRIT. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55045886A JPS5850926B2 (en) | 1980-04-08 | 1980-04-08 | Production method of calcium nitrite aqueous solution |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56145106A true JPS56145106A (en) | 1981-11-11 |
JPS5850926B2 JPS5850926B2 (en) | 1983-11-14 |
Family
ID=12731716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55045886A Expired JPS5850926B2 (en) | 1980-04-08 | 1980-04-08 | Production method of calcium nitrite aqueous solution |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5850926B2 (en) |
CA (1) | CA1114133A (en) |
DE (1) | DE3036605C2 (en) |
DK (1) | DK156168C (en) |
GB (1) | GB2074993B (en) |
NO (1) | NO154832C (en) |
SE (1) | SE438843B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6088710U (en) * | 1983-11-22 | 1985-06-18 | 株式会社吉野工業所 | Primary molded product of biaxially stretched blow molded wide mouth bottle |
JPS6088711U (en) * | 1983-11-22 | 1985-06-18 | 株式会社吉野工業所 | Primary molded product of biaxially stretched blow molded wide mouth bottle |
JPS60101118U (en) * | 1983-12-15 | 1985-07-10 | 株式会社吉野工業所 | Molding mold equipment for biaxially stretched blow-molded wide-mouth bottles |
JPS60105116U (en) * | 1983-12-21 | 1985-07-18 | 株式会社吉野工業所 | Primary molded product of biaxially stretched blow molded bottle |
WO2011163587A1 (en) * | 2010-06-25 | 2011-12-29 | Board Of Governors For Higher Education,State Of Rhode Island And Providence Plantations | Self-mending composites incorporating encapsulated mending agents |
EP3536677A1 (en) * | 2018-03-05 | 2019-09-11 | Yara International ASA | A setting and hardening accelerator for a cement, mortar or concrete composition, optionally comprising supplementary cementitious materials, and use of this accelerator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA967723A (en) * | 1970-04-01 | 1975-05-20 | Martin M. Wendel | Manufacture of nitrites |
JPS5443196A (en) * | 1977-09-13 | 1979-04-05 | Nissan Chem Ind Ltd | Prduction of aqueous solution of calcium nitrite |
-
1980
- 1980-04-08 JP JP55045886A patent/JPS5850926B2/en not_active Expired
- 1980-09-19 DK DK398680A patent/DK156168C/en not_active IP Right Cessation
- 1980-09-29 SE SE8006790A patent/SE438843B/en not_active IP Right Cessation
- 1980-09-29 NO NO802873A patent/NO154832C/en unknown
- 1980-09-29 DE DE3036605A patent/DE3036605C2/en not_active Expired
- 1980-09-29 CA CA361,175A patent/CA1114133A/en not_active Expired
- 1980-09-29 GB GB8031397A patent/GB2074993B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DK398680A (en) | 1981-10-09 |
GB2074993A (en) | 1981-11-11 |
DK156168B (en) | 1989-07-03 |
DK156168C (en) | 1989-12-04 |
GB2074993B (en) | 1983-08-10 |
SE8006790L (en) | 1981-10-09 |
NO154832C (en) | 1987-01-07 |
JPS5850926B2 (en) | 1983-11-14 |
NO154832B (en) | 1986-09-22 |
DE3036605C2 (en) | 1987-04-16 |
NO802873L (en) | 1981-10-09 |
SE438843B (en) | 1985-05-13 |
DE3036605A1 (en) | 1981-10-15 |
CA1114133A (en) | 1981-12-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3682592A (en) | Treatment of waste hci pickle liquor | |
US3991167A (en) | Process for lowering nitrogen oxides in effluent gases | |
JPS56145106A (en) | Preparation of aqueous solution of calcium nitrite | |
US4089938A (en) | Process for recovering oxygen from air | |
JPS5751105A (en) | Preparation of nitrous oxide | |
US4208391A (en) | Process for producing aqueous solution of calcium nitrite | |
JPS5586584A (en) | Wet oxidizing treatment of waste water | |
JPS5517339A (en) | Preparation of thiourea dioxide | |
JPS57128655A (en) | Preparation of 1,4-dihydroxy-2-naphthoic acid | |
CA2336436C (en) | Process for producing gypsum from a calcium sulfite gas desulfurization slurry | |
JPS56149317A (en) | Manufacture of sodium hydrogencarbonate | |
JPS57192357A (en) | Preparation of ammonium sulfamate | |
JPS56125358A (en) | Preparation of guanidine sulfamate | |
Mozes | Regenerative limestone slurry process for flue gas desulfurization | |
JPS57102857A (en) | Preparation of 1-aminonaphthalene-3,6,8-trisulfonic acid | |
JPS5711971A (en) | Preparation of pyrazinamide | |
JPS5331616A (en) | Preparation of glycine | |
JPS5673605A (en) | Simultaneous manufacture of hydrazine hydrate and crystalline gypsum | |
JPS5513223A (en) | Preparation of isobutyric acid | |
JPS5751116A (en) | Preparation of alkali metal carbonate and gypsum | |
JPS57149816A (en) | Manufacture of sodium silicofluoride from waste gas containing fluorine | |
JPS56166142A (en) | Preparation of m-phenoxybenzaldehyde | |
JPS54136599A (en) | Production of ammonia | |
JPS5513225A (en) | Preparation of isobutyric acid | |
JPS5295578A (en) | Wet process desulfurization of exhaust gas by slag |