Method and device for measuring complete evaporating temperature of alcohol-based fuel
A complete evaporation temperature, alcohol-based fuel technology, applied in the investigation phase/state change and other directions, can solve the problems of test result error, method cannot be initialized, etc., to achieve the effect of proper control, simple and convenient measurement method, and accurate temperature and pressure acquisition
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Embodiment 1
[0031] Embodiment 1: Alcohol-based fuel complete evaporation temperature measuring device
[0032] Such as figure 1 As shown, the measuring device includes a reactor 1 and an electric furnace 2, the electric furnace 2 is set on the outer wall of the reactor 1, the reactor 1 includes a kettle body 11 and a kettle cover 12, and two thermocouple sensors TC1 and TC2 are installed on the kettle cover 12 And a pressure sensor P, when the lid of the kettle is closed, TC1 is in contact with the bottom of the kettle body, and TC2 is suspended from the kettle body. The kettle body 11 and the kettle cover 12 are made of T316S ultra-low carbon stainless steel. The inner diameter of the kettle body 11 is 63.5mm and the volume is 500ml. TC2 is a K-type thermocouple sensor, and TC2 is 15mm away from the bottom of the kettle body.
Embodiment 2
[0033] Embodiment 2: take a certain alcohol-based fuel as an example to illustrate the principle of the measurement method of the present invention
[0034] Take the test results of a certain alcohol-based fuel as an example for analysis. Depend on figure 2 It can be seen that TC1 and TC2 have two "steps" with relatively gentle slopes during the heating process. Since the alcohol-based fuel is mainly made of methanol and ethanol mixed in different proportions, these two "steps" should be due to the It is produced when methanol and ethanol are evaporated separately. Unlike the horizontal boiling curve under constant pressure conditions, since the number of moles of the gas phase gradually increases during boiling in a constant volume reactor, the pressure in the vessel increases, and the corresponding saturation temperature also increases accordingly, resulting in a certain The slope of the boiling curve. However, it can be seen that the heating rate during boiling is sig...
Embodiment 3
[0038] Embodiment 3: Take water as the accuracy of the sample analysis method of the present invention
[0039] Measure different volumes of water (the volume corresponding to 1.45Mpa is 5.5ML, the volume corresponding to 1.99Mpa is 8ml, and the volume corresponding to 2.38Mpa is 9ml)) and add them to the constant-volume reactor described in Example 1; Install the lid of the reaction kettle to ensure the sealing fit between the kettle body and the lid; set the heating temperature of the heating device to 300°C through the temperature control unit, and start heating; after the temperature of the electric furnace reaches 300°C, first start the data processing unit, and then install the A good reaction kettle is placed in the heating device and heated at a constant temperature of 300°C. The liquid temperature and steam temperature in the kettle body are collected by thermocouple sensors TC1 and TC2 respectively. The data processing unit receives the temperature signal and draws ...
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