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Fixed bed carbon dioxide hydrogenation to methanol

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Fixed bed carbon dioxide hydrogenation to methanol

The fixed-bed reactor for synthesizing methanol from carbon dioxide hydrogenation is a high-efficiency reaction equipment with a fixed-bed structure, which is specially designed for converting CO₂ and hydrogen (H₂) into methanol (CH₃OH) under the action of a catalyst.
  • Item NO.:

    OLT-FD0331
  • Lead Time:

    7-15 days
  • Product Orgin:

    China
  • Shipping Port:

    Xiamen
  • Model Number:

    OLT-FD0331
  • Power:

    AC 220±22V 50Hz
  • Warranty:

    1 year
  • Delivery Time:

    7-15 days
  • Product Details

The fixed-bed reactor for synthesizing methanol from carbon dioxide hydrogenation is a high-efficiency reaction equipment with a fixed-bed structure, which is specially designed to convert CO₂ and hydrogen (H₂) into methanol (CH₃OH) under the action of a catalyst. Under the premise of ensuring the safety and stability of the reaction, the equipment achieves high-value utilization of CO₂ resources through precise temperature and pressure control, and at the same time provides strong support for the industrial production of clean fuels.


Working Principle

1. Reaction Process:
The reactor is pre-filled with high-performance catalysts (such as Cu-ZnO-Al₂O₃ system), and the reaction gases CO₂ and H₂ pass through the fixed bed at high temperature and high pressure (usually in the range of 200-300℃ and 3-10MPa). The reaction takes place on the catalyst surface, and CO₂ and H₂ generate methanol under exothermic conditions, accompanied by a small amount of by-products (water, unreacted gas, etc.).

2. Fixed Bed Structure:
The catalyst particles are fixedly loaded in the reactor, and the reaction gas enters from the bottom or side of the bed to ensure full contact and achieve high conversion rate.

3. Thermal Management:
Since the reaction is an exothermic reaction, an efficient cooling system is set up in the equipment. The reaction temperature is regulated by an external cooling medium (such as cooling water or cooling oil) to avoid the formation of local hot spots and ensure the long-term activity of the catalyst.



Main advantages

Simple structure and stable operation
The fixed bed design has a compact structure, is relatively simple to manufacture and install, and is easy to achieve continuous and stable production.

High catalytic efficiency
The long contact time between the catalyst and the reaction gas helps to improve the CO₂ conversion rate and methanol selectivity, thereby improving the overall process efficiency.

Thermal management optimization
The professionally designed cooling system can effectively control the reaction temperature, prevent overheating from causing catalyst deactivation, and extend the service life of the equipment.

Environmental protection and energy saving
The use of carbon dioxide as a raw material not only helps to reduce greenhouse gas emissions, but also the generated methanol can be used as a clean fuel to achieve resource recycling.


Technical parameters (example)

Parameters Specifications/range Description
Reaction temperature 200℃~300℃ Adjustable according to catalyst and process requirements
Working pressure 3~10 MPa Ensure efficient reaction and improve CO₂ conversion rate
Gas feed ratio H₂:CO₂ = 3:1 ~ 4:1 Ensure sufficient hydrogen and promote methanol production
Catalyst type Cu-ZnO-Al₂O₃ and its modified catalyst High activity, long life, easy to fix
Reactor structure Fixed bed structure Catalyst particles are evenly filled, and the gas passes through the catalyst bed from bottom to top
Cooling system Water cooling/oil cooling system Efficient heat dissipation to maintain uniform and stable reaction temperature
Raw material purity requirements CO₂, H₂ purity not less than 99% Ensure that the reaction process is not disturbed by impurities
Equipment material High temperature resistant stainless steel or pressure resistant alloy Ensure long-term stable operation under high temperature and high pressure environment
Automatic control system PLC intelligent control system Real-time monitoring of temperature, pressure and flow to ensure process safety and stability
Note: Specific parameters can be customized and adjusted according to customer process requirements and actual equipment.


Application areas

  • Methanol production: using CO₂ hydrogenation to generate methanol, which is used as a chemical raw material, fuel oil or basic raw material for methanol fuel cells.
  • CO₂ resource utilization: effectively reduce greenhouse gas emissions and achieve carbon recycling.
  • Clean energy production: provide solutions for industrial clean energy production, and help energy transformation and sustainable development.


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