Hydrate process and apparatus for separating gas mixture continuously

Abstract

The present invention proposes hydrate process and apparatus for separating gas mixture continuously. The countercurrent continuous separation process in three serially connected stages is adopted to raise the CO2 recovering rate from fume, the CO2 concentration in the product and the separation rate and efficiency. Each of the separating systems consists of a hydrate synthesizer, a hydrate decomposer, a circulating pump, a heat exchanger, and a micro bubble mixing and jetting reactor. The present invention is suitable for continuous separation and enrichment of CO2 in the fume of coal burning power plant, and may be also used in the continuous separation and enrichment of gas mixture containing CO2 in chemical industry, metallurgy, petroleum and other fields.

Description

technical field

[0001] The invention relates to a continuous separation technology of mixed gas, in particular to a continuous separation technology of mixed gas by hydrate method. technical background

[0002] The reality of global warming is constantly sounding the alarm to people all over the world, and greenhouse effect gases, especially CO 2 Gas emissions have become one of the hottest issues in the world. As of the end of 2004, a total of 141 countries and regions around the world have approved to reduce CO emissions 2 The purpose of the "Kyoto Protocol", which came into effect on February 16, 2005, requires all countries to control the emission of greenhouse gases. Atmospheric CO 2 The main source of the continuous increase in concentration is the exhaust gas emitted from large-scale energy production in industry. my country is a country where coal is the main energy source, and this energy structure will not change for a long time in the future. Most of my count...

Examples

specific Embodiment approach

[0059] Such as figure 1 , 2, 3, after the flue gas is pretreated by water washing, drying, compression, pre-cooling, etc., the CO in the flue gas 2 The molar concentration is about 18%, the pressure is about 2.0MPa, and the temperature is 4°C. The pretreated flue gas enters the second-stage hydrate through the flue gas feed pipe 1, feed regulating valve 18a, and flow meter 16. The synthesis kettle 27; the aqueous solution containing 1.0% accelerator sodium lauryl sulfate is added to the first, second and third-stage hydrate synthesis kettles through the aqueous solution supply system and the aqueous solution supply pipeline 4; in the second-stage hydrate synthesis kettle 27 The aqueous solution containing the hydrate formation promoter is cooled to 2°C through the liquid phase circulation pipe 28 of the second-stage hydrate synthesis tank to the heat exchanger 14, and then enters the micro The bubble jet fully mixed reactor 21; the flue gas in the gas phase area at the top o...

technical field

[0001] The invention relates to a continuous separation technology of mixed gas, in particular to a continuous separation technology of mixed gas by hydrate method. technical background

[0002] The reality of global warming is constantly sounding the alarm to people all over the world, and greenhouse effect gases, especially CO 2 Gas emissions have become one of the hottest issues in the world. As of the end of 2004, a total of 141 countries and regions around the world have approved to reduce CO emissions 2 The purpose of the "Kyoto Protocol", which came into effect on February 16, 2005, requires all countries to control the emission of greenhouse gases. Atmospheric CO 2 The main source of the continuous increase in concentration is the exhaust gas emitted from large-scale energy production in industry. my country is a country where coal is the main energy source, and this energy structure will not change for a long time in the future. Most of my count...

Examples

specific Embodiment approach

[0059] Such as figure 1 , 2, 3, after the flue gas is pretreated by water washing, drying, compression, pre-cooling, etc., the CO in the flue gas 2 The molar concentration is about 18%, the pressure is about 2.0MPa, and the temperature is 4°C. The pretreated flue gas enters the second-stage hydrate through the flue gas feed pipe 1, feed regulating valve 18a, and flow meter 16. The synthesis kettle 27; the aqueous solution containing 1.0% accelerator sodium lauryl sulfate is added to the first, second and third-stage hydrate synthesis kettles through the aqueous solution supply system and the aqueous solution supply pipeline 4; in the second-stage hydrate synthesis kettle 27 The aqueous solution containing the hydrate formation promoter is cooled to 2°C through the liquid phase circulation pipe 28 of the second-stage hydrate synthesis tank to the heat exchanger 14, and then enters the micro The bubble jet fully mixed reactor 21; the flue gas in the gas phase area at the top o...

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