Wet Decarbonization Technology

Keywords：wet decarbonization, CO₂ capture, carbon dioxide removal, CO₂ absorption
Category：CO2 Process Equipment

Wet Decarbonization Technology is an advanced gas treatment process designed to efficiently remove carbon dioxide from industrial exhaust streams using liquid absorbents in a wet scrubbing system. By combining chemical absorption with optimized reactor design, it achieves high CO₂ removal efficiency while maintaining stable long‑term performance. The system features automated circulation, regeneration cycles, and intelligent monitoring to ensure reliable operation with reduced maintenance costs. Its modular design allows easy integration into existing facilities, making it suitable for industries such as power generation, petrochemical refining, metallurgy, and cement production. Wet decarbonization provides a sustainable solution for reducing greenhouse gas emissions and supporting carbon neutrality goals.

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Providing tailored design, development, production, and services for the complete CO₂ industry chain.

Product Details
Product Specifications

Product Overview

Wet CO₂ removal technology is a widely applied gas purification process suitable for efficiently removing CO₂ and H₂S from various gas streams, including synthesis gas for ammonia and methanol production, refinery gas, town gas, and natural gas.

The process uses methyl diethanolamine (MDEA) as the core absorbent in combination with an activator system, leveraging both physical and chemical absorption mechanisms. This ensures high purification efficiency while minimizing energy consumption. The technology not only removes CO₂ but also simultaneously eliminates inorganic and hydrolyzable organic sulfur compounds, providing a stable and reliable solution for industrial gas purification.

Working Principle

The technology operates based on the absorption and regeneration of amine solutions.

Gas containing CO₂ and H₂S enters the absorption tower and comes into contact with the MDEA solution. CO₂ and H₂S are selectively absorbed into the liquid phase, with CO₂ primarily captured via reversible chemical reactions and a portion physically dissolved.

The rich amine solution is then sent to the regeneration system, where heating releases CO₂ and H₂S, restoring the absorbent’s activity for recirculation. Activators are introduced to enhance reaction rates and absorption efficiency, enabling a low-energy, high-efficiency gas purification process.

Key Features

Flexible Process Configuration: Supports single-stage or multi-stage absorption and regeneration, optimizing both investment and operating energy consumption.
High CO₂ Removal Efficiency: Reduces CO₂ concentration to below 20 ppm, meeting high-purity gas requirements.
Strong Desulfurization Capability: Can lower total sulfur to ~1 ppm at inlet sulfur levels of approximately 1 g/Nm³.
Material Compatibility: Low corrosivity to equipment materials; compatible with carbon steel and other commonly used materials, extending equipment lifespan.
Simultaneous Inorganic & Organic Sulfur Removal: Enhances overall gas purification performance.
Stable Operation: Suitable for continuous industrial-scale production.

Applications

Petrochemical Industry: Purification of synthesis gas for ammonia and methanol production, improving product quality and reducing emissions.
Natural Gas Processing: Efficient removal of CO₂ and H₂S from natural gas, ensuring safe transport and usage.
Refinery Gas Treatment: Purifies various refinery gas streams, increasing gas utilization efficiency and minimizing environmental impact.

Plant Capacity	Feed Gas	Process Route
20,000–80,000 T/a	Flue Gas	Amine Process
85,000–100,000 Nm³/h	Natural Gas	Amine Process
12,000 T/a	Cement Flue Gas	Amine Process
20,000–50,000 t/a	Lime Kiln Flue Gas	Amine / VPSA
50,000 t/a	Field Gas	Amine Process
4,700 Nm³/h	Coal Gas	Amine Process
148,743 Nm³/h	Blast Furnace Shaft Gas	Amine Process
10,000–75,000 Nm³/h	Synthetic Natural Gas	Amine Process
50,000–300,000 T/a	Boiler Flue Gas	Amine Process
23,857 Nm³/h	Ethylene-rich Gas	Amine Process
3,000 Nm³/h	Low-concentration Gas	Amine Process
20,000 t/a	Catalytic Flue Gas	Amine Process
6,000–80,000 Nm³/h	Shift Gas	Amine Process
50,000 t/a	PSA Tail Gas	Amine Process