A system for detecting the adsorption capacity of a molecular sieve under high-pressure conditions and a detecting method thereof

[0041] Such as figure 1As shown, the high-pressure liquid storage tank 1, the first impurity tank 2, the second impurity tank 3, and the molecular sieve adsorption tank 4 are cleaned, dried, and vacuumized for later use. Vacuumize the high-pressure liquid storage tank 1, weigh and record. Connect it to the liquefied petroleum gas filling system, open the valve, and fill the high-pressure liquid storage tank 1 with liquefied petroleum gas. After filling, close the valve, weigh the high-pressure liquid storage tank 1, and calculate the mass of the filled liquefied petroleum gas to be 2430g. Use a microsampler to slowly pipette 2.5g of water into the first impurity tank 2; use a microsampler to slowly pipette 0.8g dimethyl disulfide into the second impurity tank 3, and weigh 10.0g of fresh 13X Add the molecular sieve sample to the molecular sieve adsorption tank 4 and vacuumize; connect the high-pressure liquid storage tank 1, the first impurity tank 2, the second impurity tank...

[0043] The high-pressure liquid storage tank 1, the first impurity tank 2, and the molecular sieve adsorption tank 4 are cleaned, dried, and evacuated for later use. Vacuumize the high-pressure liquid storage tank 1, weigh and record. Connect it to the high-pressure propylene filling system, open the valve, and fill the high-pressure liquid storage tank 1 with propylene. After filling, close the valve, weigh the high-pressure liquid storage tank 1, and calculate the mass of filled propylene to be 2590g. Use a micro-sampler to slowly pipette 2 g of water and add it to the first impurity tank 2; weigh 12.0 g of fresh 3A molecular sieve sample and add it to the molecular sieve adsorption tank 4 and vacuumize it; , The molecular sieve adsorption tank 4 is connected through pipelines; turn on the heater of the first impurity tank 2, heat up to 100°C, heat and vaporize the water in the first impurity tank 2, open the second flow control valve 6, and let the heated and vaporized wat...

[0045] The system for detecting the adsorption capacity of molecular sieves under high pressure conditions includes a high-pressure liquid storage tank 1, an impurity injection unit connected to the outlet of the high-pressure liquid storage tank 1 in turn, a molecular sieve adsorption tank 4 and a detection instrument, the inlet of the high-pressure liquid storage tank 1 and the The external high-pressure medium delivery pipeline is connected, and the first flow control valve 5 and the second flow control valve 6 are respectively set between the high-pressure liquid storage tank 1 and the impurity injection unit, between the impurity injection unit and the molecular sieve adsorption tank 4, and the molecular sieve adsorption A pressure reducing valve 8 is also provided between the tank 4 and the detection instrument, and the molecular sieve adsorption tank 4 is connected with an external vacuum pump.

[0046] In this implementation, the impurity injection unit is composed of t...