A system for capturing carbon dioxide by bubbling hydrate method

Abstract

A bubbling type system for gathering CO2 by a hydrate process belongs to the technical field of hydrate application, and comprises a bubble column, a gas intake pressurization system, a dual-refrigerating system, a gas gathering system, a separating medium circulation system and a computer data acquisition system. Mixed gas is conveyed in the bubble column after being pressurized by the gas intake pressurization system, the bubble column is filled with a separating medium, and is introduced into the bubble column after being cooled to the set temperature by the dual-refrigerating system, and CO2 hydrates are generated at low temperature. A reducing valve is arranged outside the bubble column, CO2 is enabled to be separated through a depressurization method, the gas flow after CO2 separation is measured by a flowmeter, gas components are analyzed by a gaschromatograph, the working parameters during the separation process, such as temperature, pressure signal and flow signal, are acquired and analyzed in time by the computer data acquisition system. The device is low in cost, has basic significance in mastering the gas separation technology adopting the hydrate process, and has an important value in the aspects of effective CO2 gathering in a power plant and high-purity utilization of hydrogen energy.

Description

technical field [0001] The invention relates to a system for capturing carbon dioxide by a bubbling hydrate method, and belongs to the technical field of hydrate application. Background technique [0002] With the extensive use of fossil fuels, the "greenhouse effect" is becoming more and more serious, and more and more people are paying attention to environmental issues. Although CO 2 brought about the greenhouse effect, however, CO 2 It is widely used in oil extraction, metal smelting, fire protection and biopharmaceuticals. The power plant is a CO 2 The main place of discharge. If the CO in the power plant is decommissioned 2 The collection and utilization will produce good economic and social benefits. Existing mature CO 2 Separation techniques include absorption separation, adsorption separation, membrane separation, and cryogenic separation. The absorption and adsorption process realizes the CO 2 Separation energy consumption is huge; chemical adsorption solve...

AI Technical Summary

Problems solved by technology

The absorption and adsorption process realizes the CO 2 Separation energy consumption is huge; chemical adsorption solvents are easy to degrade and cause equipment corrosion; pressure swing adsorption has large investment and high energy consumption; the application of membrane separation technology depends on the development of membrane materials, process improvement, cost reduction and poor stability. Limited processing capacity and other issues; the cryogenic separation process requires high investment, high energy consumption, and relatively harsh conditions, which will become extremely difficult as the partial pressure of carbon dioxide decreases

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