Device for evaluating performance of hydrate inhibitor

Abstract

The invention discloses an experimental device for evaluating a hydrate inhibitor, which is characterized by comprising an air bottle (1), high-pressure stainless steel reaction kettles, a data acquisition instrument (23) and a computer (24), wherein the air bottle (1) is connected with more than two high-pressure stainless steel reaction kettles through pipelines; the high-pressure stainless steel reaction kettles (11) are provided with thermal resistors (18) and pressure transmitters (19); the thermal resistors (18) and the pressure transmitters (19) are connected to an input end of the data acquisition instrument (23); and the data acquisition instrument (23) is connected to the computer (24). The device can achieve that all the high-pressure stainless steel reaction kettles react simultaneously at the same pressure and at the same temperature, and the data acquisition instrument records the pressure and temperature changes in the reaction process so as to judge the generation time of a hydrate. The device can quickly screen the inhibitor and determine the optimal dosage of the inhibitor, and has the advantages of speediness, high efficiency and economization.

Description

Technical field [0001] The invention relates to the field of performance evaluation of hydrate inhibitors, in particular to a performance evaluation device of hydrate inhibitors. Background technique [0002] Hydrates are non-stoichiometric clathrate solid substances formed by water and guest molecules under a certain pressure and temperature. Methane, ethane, propane, carbon dioxide, hydrogen sulfide and many other gases can form hydrates with water. The formation of hydrates in the extraction, processing and transportation of natural gas and oil will cause blockage of the transmission pipeline, which not only directly affects normal production, but also brings serious safety and environmental pollution problems. Therefore, the industry usually uses the addition of thermodynamic inhibitors to inhibit the formation of hydrates, such as methanol and ethylene glycol. Due to the large amount of traditional thermodynamic inhibitors, they are not friendly to the environment, and dif...

AI Technical Summary

Problems solved by technology

A single high-pressure reactor device can only test the inhibition effect under one condition at a time, and the workload is heavy. The most important thing is to carry out repeated tests. It is difficult to ensure that the test conditions are exactly the same, which adds a lot of accidental factors to the results; dynamic circulation The device is complex, takes up a lot of space, and consumes a lot of energy

In addition, differential calorimetry scanner (DSC) can also be used to study inhibition performance, but the equipment is expensive, and its maintenance and experiment costs are high

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