Separation system and method for carbon dioxide in medium-high pressure air source

A carbon dioxide and separation system technology, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as inability to achieve removal, and achieve reduced investment and operating costs, low cost requirements, low energy consumption and Effect

Pending Publication Date: 2019-07-12
HUANENG POWER INTERNATIONAL +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a separation system and method for carbon dioxide in a medium-high pressure gas sour

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  • Separation system and method for carbon dioxide in medium-high pressure air source
  • Separation system and method for carbon dioxide in medium-high pressure air source

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, a separation system for carbon dioxide in a medium-high pressure gas source provided by the present invention includes an absorption tower 1, a flash tank 2, a lean liquid heat exchanger 3, a high-pressure desorption tower 4, a high-pressure desorption reboiler 5, a lean liquid Pump 6, lean liquid cooler 7, semi-lean liquid heat exchanger 8, low-pressure desorption tower 9, semi-lean liquid pump 10, semi-lean liquid cooler 11, first low-pressure desorption reboiler 12, second low-pressure desorption reboiler device 13, desorption gas cooler 14, gas-liquid separator 15 and condensate pump 16, wherein the gas inlet of the absorption tower 1 is connected with the CO containing 2 The industrial gas source is connected, and the rich liquid outlet of the absorption tower 1 is connected with the solution inlet of the flash tank 2; ...

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Abstract

The invention provides a separation system and method for carbon dioxide in a medium-high pressure air source. CO2 rich liquor from an absorption tower is subjected to pressure reduction and regenerated step by step in modes such as flash evaporation, high-pressure desorption and low-pressure desorption, the high-pressure characteristic of a CO2 air source is fully used, and input of external heatconsumption is reduced; the low-energy-consumption and low-cost requirements are met; high-temperature desorbed air of the tower top of a high-pressure desorption tower is introduced into a reboilerof a low-pressure desorption tower and used for a heating desorption heat source, external heat consumption required by the low-pressure desorption tower is reduced, and meanwhile the cooling-water consumption of a desorbed air cooler is reduced; barren liquor and semi-barren liquor from the high-pressure desorption tower and the low-pressure desorption tower enter from an upper-section filler anda lower-section filler of the absorption tower respectively, reaction temperatures at all portions of a tower body can be kept uniform, it is avoided that the local temperature is over high, and degradation and loss of an absorbent are reduced. According to the separation system and method for carbon dioxide in the medium-high pressure air source, the high-pressure characteristic of the CO2 air source is fully used, the input of the external heat consumption is reduced, and the low-energy-consumption and low-cost requirements are met.

Description

technical field [0001] The invention belongs to the technical fields of gas separation technology and carbon dioxide emission reduction, and in particular relates to a separation system and method for carbon dioxide in a medium-high pressure gas source. Background technique [0002] Global climate change has seriously threatened the sustainable development of human society, living environment and economy. In 2013, the "Fifth Climate Change Assessment Report" released by the Intergovernmental Panel on Climate Change (IPCC) pointed out that the increase in the concentration of greenhouse gases is the main driver of climate change, CO 2 It is the greenhouse gas that contributes the most to the temperature rise effect, and the control of climate change requires a substantial and continuous reduction of CO 2 emission. In 2018, the IPCC once again issued a serious warning on global warming, CO 2 It is imperative to control emissions and increase the global warming target from w...

Claims

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Application Information

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IPC IPC(8): B01D53/18
CPCB01D53/1475B01D53/1425B01D53/18
Inventor 郭东方汪世清王金意刘练波郜时旺
Owner HUANENG POWER INTERNATIONAL
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