GB865074A - Determination of the evaporation curve for liquids by the thermogravimetric method - Google Patents
Determination of the evaporation curve for liquids by the thermogravimetric methodInfo
- Publication number
- GB865074A GB865074A GB2359260A GB2359260A GB865074A GB 865074 A GB865074 A GB 865074A GB 2359260 A GB2359260 A GB 2359260A GB 2359260 A GB2359260 A GB 2359260A GB 865074 A GB865074 A GB 865074A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- vessel
- temperature
- vapour
- measured
- 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
- 230000008020 evaporation Effects 0.000 title abstract 3
- 238000001704 evaporation Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 208000020442 loss of weight Diseases 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G7/00—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
- G01G7/02—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electromagnetic action
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
<PICT:0865074/III/1> <PICT:0865074/III/2> Liquid mixtures are analysed by the "evaporation" method in which the weight is continually measured on a balance, the temperature of the escaping vapour measured by a thermocouple, and the rate of loss of weight calculated. In Fig. 2 the liquid mixture is contained in a stoppered vessel 58 in a metal dish 62 heated by an electric heater 63 situated at one side (to avoid buoyancy effects from rising hot air) and joined by a thermally-conducting member 64. The temperature of the issuing vapour is measured by the thermojunction 66. The metal dish can be inside the vessel instead of outside (Fig. 1, not shown). The main heating of the vessel is achieved by placing it in a furnace 14 (Fig. 3), and the auxiliary heating mentioned above serves to keep the evaporation temperature slightly above the ambient, to prevent overheating of the vapour. The vessel is attached to one arm of a balance 8 whose reading is detected photoelectrically or electromagnetically as in Specification 865,073 and displayed on a meter showing rate of change of weight. As in Specification 865,073 the meter readings are recorded on photographic paper 20 in the form of TG (weight), DTG (rate of change of weight) and T (temperature) curves, together with calibration marks. The DTA facilities are not used for the present invention.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2359260A GB865074A (en) | 1957-09-25 | 1957-09-25 | Determination of the evaporation curve for liquids by the thermogravimetric method |
| DE1957P0025261 DE1278144B (en) | 1957-09-25 | 1957-09-28 | Process and apparatus for the thermogravimetric analysis of liquids |
| US78951A US3135107A (en) | 1957-09-25 | 1960-12-28 | Apparatus for the determination of the evaporation curve for liquids by the thermogravimetric method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2359260A GB865074A (en) | 1957-09-25 | 1957-09-25 | Determination of the evaporation curve for liquids by the thermogravimetric method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB865074A true GB865074A (en) | 1961-04-12 |
Family
ID=10198173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2359260A Expired GB865074A (en) | 1957-09-25 | 1957-09-25 | Determination of the evaporation curve for liquids by the thermogravimetric method |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB865074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893537A (en) * | 2010-06-24 | 2010-11-24 | 大连北方分析仪器有限公司 | Novel method and device for detecting evaporation loss of lubricating oil |
-
1957
- 1957-09-25 GB GB2359260A patent/GB865074A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893537A (en) * | 2010-06-24 | 2010-11-24 | 大连北方分析仪器有限公司 | Novel method and device for detecting evaporation loss of lubricating oil |
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