Triethylene glycol dehydration device and process for oxygen-enriched gas flue gas

Abstract

The invention discloses a triethylene glycol dehydration device and process for oxygen-enriched gas flue gas. The process comprises the following steps: firstly enabling lean triethylene glycol to enter from a tower top of an absorption tower; carrying out counter-current contact on the lean triethylene glycol and oxygen-enriched gas flue gas entering from a tower bottom of the absorption tower under the conditions of high pressure and normal temperature of the absorption tower; absorbing moisture in the gas flue gas and enabling the gas flue gas to pass through a lean and rich solution heat exchanger in a form of rich glycol; carrying out heat exchange with lean glycol and enabling the gas flue gas to enter a regeneration tower; and enabling the gas flue gas to pass through a glycol pump, a dry gas-lean liquid heat exchanger and a condenser in sequence in a lean glycol form after the gas flue gas is dehydrated in the regeneration tower; and obtaining dry gas leaving from the tower top of the absorption tower, so as to obtain high-purity CO2. By adopting the dehydration device and process disclosed by the invention, the problems of high thermal exploitation cost of thickened oil and great energy consumption of a steam-injection boiler are solved, and a greenhouse effect problem caused by the fact that a lot of the CO2 is emitted is solved; economic benefits, energy source benefits and environment benefits can be generated; and the dehydration device and process have important meanings on construction of energy-saving and environment-friendly type development modes and green production of an oil field.

Description

technical field [0001] The invention relates to triethylene glycol dehydration of oxygen-enriched gas flue gas, in particular to an oxygen-enriched gas flue gas triethylene glycol dehydration device and a process thereof. Background technique [0002] In recent years, due to the need to burn a large amount of fossil fuels for production and transportation, and fossil fuels burn CO 2 Excessive emissions have led to increasingly prominent global environmental problems, reducing CO 2 Emissions have become the focus of global attention. Since fossil energy will still be the main energy source in the next few decades, in the field of oil and gas, we can adjust measures to local conditions and reduce CO 2 The introduction of capture, storage and resource utilization (CCUS) technology is the most direct way to solve the country's current carbon emission reduction tasks, and it can also be injected into oil and gas reservoirs 2 It helps to enhance oil and gas recovery and is an i...

AI Technical Summary

Problems solved by technology

At present, the traditional natural gas TEG dehydration process is very mature in technology, but the oxygen-rich combustion gas flue gas TEG dehydration process has the disadvantages of imperfect process parameters and poor economic benefits

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