Supergravity revolving bed device and application in carbon dioxide collecting and passivating process

Abstract

The invention relates to a supergravity revolving bed device and an application in a carbon dioxide collecting and passivating process. A filling layer of a rotor of the revolving bed device consists of material filling layers and blade layers which are arrayed at intervals in a concentric ring mode along a radial direction, and the material filling layers in the rotor ensure that fluid generates a large number of new surface areas, and the blade layers in the rotor can regulate and control the flowing direction of the fluid so as to ensure that end effect areas are formed when the fluid enters a next layer for filling materials. In the carbon dioxide collecting and passivating process, the processes of absorption and desorption of the carbon dioxide are carried out in the revolving bed device so as to ensure that the carbon dioxide in flow industrial tail gas and associated gas is efficiently collected and passivated for in situ recovery. Compared with a conventional process using tower equipment to collect and passivate the carbon dioxide, under the condition of reaching the same absorption and desorption effects, the invention saves the equipment investment by 30 percent and reduces the floor space by 50 percent and the operation cost by 10 percent. The revolving bed device has large operation elasticity, stable operation and practical values for industrial use.

Description

technical field [0001] The invention relates to a gas separation and purification device and its application, in particular to a high-gravity rotating bed device and its application in separation and desorption processes, and is especially suitable for the capture and purification process of carbon dioxide in process industry tail gas or oil field associated gas. Background technique [0002] The high-gravity rotating bed uses the centrifugal force generated by the rotation to simulate the high-gravity environment to strengthen the transfer and reaction process, which can greatly improve the efficiency of the transfer and reaction process. The early patents on the high-gravity device (application number 91109255.2, 91111028.3, ZL95215430 .7 etc.) have been disclosed. At present, this technology has been extended from the initial application to the physical process of separation and desorption to many fields such as chemical reaction and ultrafine particle preparation (see Ch...

AI Technical Summary

Problems solved by technology

The traditional absorption method adopts the traditional process method with the absorption tower as the core equipment, which has problems such as low gas-liquid ratio, large amount of liquid, low operating flexibility, large equipment, and difficulty in starting and parking.

Especially in the existing process industry technology, if the tower equipment is used as the core of the carbon dioxide capture and purification process, it will be difficult to implement due to the large footprint and space occupation

For the capture and purification of carbon dioxide in oilfield associated gas, due to the large number of production wells in the oilfield and the wide distribution range, if the carbon dioxide capture and purification process of traditional tower equipment is used, the tower equipment needs to be installed on a solid foundation. Bearing wind load and other loads, once the construction and installation are completed, it cannot be moved, and the operation flexibility is small, so it is difficult to meet the industrial site requirements of the oil field

Rotating packed bed technology provides an efficient way to capture and recover carbon dioxide from process industry and associated gas in oilfields. However, due to the low carbon dioxide content and the small mass transfer and reaction driving force, the required packing layer thickness It is very large, or multiple rotating beds need to be connected in series, which increases the volume of the equipment and the investment and operation cost

Therefore, in the field of process industry and oil field oil recovery, which emit the most carbon dioxide, the capture and utilization of carbon dioxide emissions are still very low.

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