Cloud Point and Pour Point Determination
ABSTRACT/ SUMMARY
After preliminary heating, the sample is cooled at a specified rate and examined at intervals of 1°C for flow characteristics. The lowest temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION
In the cloud point experiment, waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine the first cloud of wax crystals in a liquid when it is cooled.
Whereas, pour point experiment is to determine the minimum temperature of the oil which will continue flow when it is cooled. It is an indication which the oil is readily pumped able.
OBJECTIVE
To determine of a fluidity of residual fuel oil at a specified temperature in an as received condition, this is to determine the cloud point and pour point for crude oil and biodiesel.
THEORY * Cloud point : -
Cloud point is the temperature at which a cloud of wax crystals first appears in a liquid when it is cooled under specified condition. In this experiment the cloud point is refer to the temperature below which wax in the crude oil and biodiesel form a cloud appearance. Due to presence of solidified waxes, the oil thickened and clogs fuel filters and the injectors in engines. The wax also accumulates on cold surfaces and forms an emulsion with water. Therefore the cloud point indicates the tendency of the oil to plug filters or small orifices at cold operating temperatures. * Pour point :-
Pour point is the lowest temperature at which a sample of petroleum product will continue flow when it is cooled under specified standard conditions it is a rough indication of the lowest temperature at which oil is readily pump able. Also the pour point can be defined as the minimum temperature of the liquid, particularly a lubricant after which, on decreasing the temperature, the liquid ceases to flow.
After preliminary heating, the sample is cooled at a specified rate and examined at intervals of 1°C for flow characteristics. The lowest temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION
In the cloud point experiment, waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine the first cloud of wax crystals in a liquid when it is cooled.
Whereas, pour point experiment is to determine the minimum temperature of the oil which will continue flow when it is cooled. It is an indication which the oil is readily pumped able.
OBJECTIVE
To determine of a fluidity of residual fuel oil at a specified temperature in an as received condition, this is to determine the cloud point and pour point for crude oil and biodiesel.
THEORY * Cloud point : -
Cloud point is the temperature at which a cloud of wax crystals first appears in a liquid when it is cooled under specified condition. In this experiment the cloud point is refer to the temperature below which wax in the crude oil and biodiesel form a cloud appearance. Due to presence of solidified waxes, the oil thickened and clogs fuel filters and the injectors in engines. The wax also accumulates on cold surfaces and forms an emulsion with water. Therefore the cloud point indicates the tendency of the oil to plug filters or small orifices at cold operating temperatures. * Pour point :-
Pour point is the lowest temperature at which a sample of petroleum product will continue flow when it is cooled under specified standard conditions it is a rough indication of the lowest temperature at which oil is readily pump able. Also the pour point can be defined as the minimum temperature of the liquid, particularly a lubricant after which, on decreasing the temperature, the liquid ceases to flow.