Oil and gas decarburizing and desulfurizing process unit

Abstract

The invention provides an oil and gas decarburizing and desulfurizing process unit which comprises a compressed oil and gas storage tank, a carbon-sulfur gas storage tank, a hydrocarbon storage tank, a primary removal tower, a desorption tower and two refined removal towers, wherein ester absorbers, such as liquid carbonic acid acrylic ester, are stored in the primary removal tower and can absorb carbon-sulfur gas and water, the air pressure in the primary removal tower is 2-20 atmospheres, and the temperature is between 5DEG C and 20 DEG C; the air pressure in the desorption tower is 5-0.2 atmosphere; the refined removal towers contain granular absorbing materials, such as molecular sieve, which can be used for absorbing the carbon-sulfur gas and water, and the carbon-sulfur gas absorbed by the absorbing materials can be completely released to flow into the carbon-sulfur gas storage tank when the absorbing material isheated. The whole technological process or local process can operate under the control of an automatic control system. Two-level adsorption adopted in the unit can better remove the carbon-sulfur gas, water and solid wastes out of the oil and gas to obtain basically pure hydrocarbon gas. The whole unit is compact in line structure and is lower in use and maintenance costs and can be applied to small and medium-sized oil fields.

Description

[0001] technical field [0002] The invention relates to a process device for decarbonation, dehydrogenation and dehydration before oil and gas are transported to external pipelines. Background technique [0003] Oilfield associated gas is a mixed gas dissolved in petroleum; the content of hydrocarbons accounts for more than 50%, and the components above C3 can reach 30%; most of the domestic oilfield tank top gas is vented through breathing valves, which wastes resources and pollutes the environment . Natural gas and coalfield associated gas also have similar situations. In this paper, the above three are collectively referred to as oil and gas. The direct discharge of oil and gas pollutes the environment more seriously than freon, and they are non-renewable resources, and emptying them will cause a great waste of resources. Realizing the recovery and utilization of oil and gas resources has important economic and environmental benefits. However, carbon-sulfur gas (refe...

AI Technical Summary

Problems solved by technology

[0007] Purpose of the invention: To overcome the defects of the traditional oil and gas decarbonization and desulfurization process equipment, such as simple or complex system, high energy consumption, and poor effect, and provide a decarbonization and desulfurization process device with high decarbonization sulfur gas efficiency and high recovery rate of total hydrocarbons

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