Could you please explain how the vacuum pump is used in oil and gas recovery, and what level of vacuum needs to be achieved?

During oil and gas recovery, a vacuum pump can be used to extract the oily gases from the material being processed. The specific process involves using a vacuum pump to draw the gases from the substance to be treated into the system, and then reducing the gas pressure under low pressure through mechanisms such as molecular collisions and diffusion, thereby achieving oil-gas separation. Generally, oil and gas recovery requires the vacuum level to be controlled between 5 and 50 millibars. After the oil and gas are saturated with adsorption, a vacuum pump is used to desorb them. The specific process involves using a vacuum pump to extract the oil and gas molecules adsorbed on the surface of the adsorbent, thereby causing their desorption. The effect of resolution can be influenced by controlling the vacuum level; both excessively high and low vacuum levels are unfavorable for desorption. Generally, the vacuum level is increased gradually between 1 and 50 millibars until the optimal resolution is achieved. However, sometimes, due to the properties of the adsorbent itself or the adsorption conditions, it may be impossible to achieve complete desorption. .

The oil and gas adsorption process is a method of removing oil and gas by utilizing the surface space of an adsorbent to enable physical or chemical adsorption of gases containing oil and gas on that adsorbent surface. When the adsorbent becomes saturated, it needs to be regenerated or desorbed to restore its adsorption capacity. The principle of a vacuum pump is the process of desorption after oil and gas adsorption. The specific process is as follows: The saturated adsorbent is removed and placed in a vacuum chamber, after which the vacuum pump is started. Reduce the pressure inside the container to the desired vacuum level, which is generally between 10^-2 Pa and 10^-4 Pa. The heating system is activated to raise the temperature of the adsorbent, which usually goes above 200°C. It is essential to control the heating rate and temperature thresholds to prevent damage to the adsorbent. The grease on the surface of the adsorbent evaporates into the air surrounding the adsorbent once it is heated; at the same time, the vacuum pump draws the air out of the container, thereby removing the grease from the oil-removal chamber. Then, the heating source is continued to be applied, and the temperature is raised to an appropriate level while ensuring that the adsorbent is not damaged, so that the oil and gas substances contained in the adsorbent can be released; these gases are then discharged and collected again. Repeat the above steps until almost all the oil and gas substances in the adsorbent have been desorbed

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