Plants and methods for capturing carbon dioxide
The fixed-bed regenerator system with airtight valves and vacuum generation efficiently captures carbon dioxide using low-temperature waste heat, addressing the size and energy inefficiencies of existing systems.
JP2026516424APending Publication Date: 2026-05-25ダルマ カルマ ファンデーション
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ダルマ カルマ ファンデーション
- Filing Date
- 2024-04-04
- Publication Date
- 2026-05-25
AI Technical Summary
Technical Problem
Existing carbon dioxide capture systems are large, complex, and require high energy inputs.
Method used
A fixed-bed regenerator system with intake and outlet valves that can be selectively switched to an airtight closed state, combined with a vacuum generating unit, allows for efficient carbon dioxide recovery using low-temperature waste heat and minimal fluid flow, and uses small-sized solid adsorbent particles.
Benefits of technology
The system achieves efficient carbon dioxide capture with reduced size, energy consumption, and improved purity, while maintaining operational efficiency.
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Smart Images
Figure 2026516424000001_ABST
Abstract
A plant (1) for recovering carbon dioxide (CO2) from a carbon dioxide-containing gas stream (2), comprising: an adsorption device (3) having an adsorption device inlet (6) and an adsorption device outlet (7), and a regeneration device (8) for separating the bound carbon dioxide (CO2) from the adsorption device (5), the regeneration device (8) having an adsorption device inlet (9) and an adsorption device outlet (10), the adsorption device outlet (7) being connected to the adsorption device inlet (9) and the adsorption device outlet (10) being connected to the adsorption device inlet (6), and a fixed-bed regeneration device (11) of the regeneration device (8) having a reservoir (12) for the adsorption device (5) and a fluid outlet (14) for drawing at least carbon dioxide (CO2) from the reservoir (12), and an adsorption device inlet (5) The plant (1) comprises an intake valve (15) located at the outlet (9) and an outlet valve (16) located at the adsorbent outlet (10), wherein the intake valve (15) and the outlet valve (16) are configured to be selectively switchable between an open state that allows the adsorbent (5) to flow into the reservoir (12) of the fixed-bed regenerator (11) through the adsorbent intake (9) and the adsorbent (5) to flow out of the reservoir (12) through the adsorbent outlet (10), and a closed state that essentially airtightly blocks the flow of the adsorbent (5) into the reservoir (12) through the adsorbent intake (9) and the flow of the adsorbent (5) out of the reservoir (12) through the adsorbent outlet (10), respectively, and the plant (1) comprises a vacuum generation unit (17) that generates a vacuum in the reservoir (12) when the intake valve (15) and the outlet valve (16) are in the closed state.
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