The concept of initial distillation point and dry point and the technical parameters of the instrument

March 9, 2021
Latest company news about The concept of initial distillation point and dry point and the technical parameters of the instrument

Under standard conditions, the range of boiling points obtained by distillation of petroleum is called the "range".
It is an indication of the quantity and temperature at which the oil in the petroleum product may be distilled over a given temperature range.
Distillation range refers to the temperature range of evaporation characteristics from the initial distillation point to the final distillation point, which is obtained by distillation of oil under specified conditions.

The whole distillate process includes the initial distillate point and the final distillate point (or dry point), gasoline also includes 10%, 50%, 90% distillate temperature, residual amount, loss of these three items.
Under the specified test conditions, the temperature at which 100ml of petroleum is heated and distilled and the first drop of oil is extracted from the end of the condenser is called the initial distillation point.
In the final stage of distillation, the highest temperature at which all the liquid has evaporated is called the final distillation point.
During the test, when the distilled condensate recovered from the measuring cylinder is 10ml, 50ml and 90ml, the temperature is respectively called 10%, 50% and 90% distillation temperature.
Dry point: The maximum temperature at which the mercury column of the thermometer stops rising and begins to fall when the distillation range of an oil is determined under specified conditions.
SH6536 automatic distillation measuring instrument (shandong shengtai instrument co., LTD.) adopts color liquid crystal display screen, Chinese menu man-machine dialogue, guide operation, the measurement process is fully automated.
It is designed according to the national standard GB/T6536 "Determination of Distillation of Petroleum Products" and ASTMD 86. It adopts embedded computer, imported IPC, 12.1 inch large LCD touch screen, friendly man-machine dialogue interface, convenient test and operation.
Using single chip microcomputer and intelligent control technology, the heating and cooling of distillation test process, distillate liquid level tracking, distillation rate control, recovery liquid volume control, temperature recording, test results printing, etc., are all automatically completed.
Main Performance Characteristics
1, real-time display of the whole process of the vapor temperature, heater temperature, distillation rate three curves, can real-time judge whether the relevant indicators meet the requirements of the test standards.
2, Adopting imported compressor, imported temperature detection sensor, automatic high subdivision step liquid level tracking system and other key components and devices, the test results are accurate and reliable, good repeatability.
3, according to user needs and test oil sample, add the applicable standard and distillation program, and can be called at any time.
4, With the air pressure automatic detection function, automatic completion of air pressure correction, test results are not affected by atmospheric changes.
5, after the end of the test, the input of residual can automatically calculate the evaporation temperature.
6. The cold bath is filled with antifreeze, with built-in circulating stirring, liquid level sensor and overflow pipe to keep the water level in the bath normal.
7, Equipped with flame detector, with automatic fire extinguishing function, to ensure the safety of the instrument.
Main technical indexes and parameters
1, cold bath temperature control range: (0 ~ 60)℃
2, cold bath temperature control accuracy: + 0.5℃;
3. Temperature control range of receiving room: (0 ~ 60)℃;
4, receiving room temperature control accuracy: ±1℃;
5, distillation heater: 1000W, 24V;
6, distillate liquid volume detection range: (0 ~ 100)mL, the resolution of 0.01mL;
7, distillate liquid volume measurement accuracy: ≤ 0.1ml;
8, working power supply: AC(220±10%) V, 50Hz;
9. Power consumption of the whole machine: 2500W;
10, the use of the environment: ambient temperature (10 ~ 35)℃;
Relative humidity ≤80%;
11, Dimensions: 500㎜×530㎜×660㎜ (length × width × height);
12. Host weight: 85kg.