GR-102 Methanation Catalyst

◼PRODUCT DESCRIPTION

In hydrogen and ammonia production units, GR-102meth anation catalyst is used to promote the reaction of low-concentration carbon oxides(such asco, co2)with excess hydrogen to generate inert gas cH4and easily removable H20, soas to purify the gos and protect the downstream catalyst. Meth a nation reaction is a convenient and economical method for gas purification, which can reduce carbon oxides to a low residual content of 10-6(v/v). The outlet co+co2of a properly designed and normally operated methanationreactorcanusuallybeeasilyreducedtobelow10×10-6(v/v),andtheservice life can reach more than5years in large-scale hydrogen and ammonia production units.

THEREACTIONISASFOLLOWS

CO+3H22=CH4+H20

H0,298=-206.2    KJ/mol CO2+4H2=CH4+2HZ2  0

H0,298=-165.0KJ/mol

◼Why is a methanation catalyst essential in hydrogen production and ammonia synthesis?

Downstream precious metal catalysts or ammonia synthesis catalysts are extremely sensitive to trace amounts of CO and CO₂ in the feed gas. Even ppm-level residues can poison and permanently deactivate them. Methanation is the final, deep purification step to ensure feed gas purity.

◼How does the GR-102 catalyst reduce carbon oxides to below 10 ppm?

The catalyst boasts a high density of highly dispersed active sites and an optimized pore structure, ensuring extremely high intrinsic activity and excellent internal diffusion efficiency. This allows it to deeply promote the hydrogenation of trace amounts of CO and CO₂, achieving ppm-level purification accuracy.

◼Methanation is a highly exothermic reaction. How does the GR-102 catalyst address bed temperature rise?

The catalyst exhibits excellent thermal stability and sintering resistance. In process design, effective control of bed temperature rise is typically achieved by controlling the inlet carbon oxide concentration (generally <1.5%), employing multiple layers, and implementing chilling or indirect heat exchange to protect the catalyst and equipment.

◼What are the main factors affecting the service life of the GR-102 catalyst?

The main factors include the content of toxicants (such as sulfur, chlorine, and arsenic) in the feed gas, the range of operating temperature fluctuations, the frequency of starts and stops, and the number of times the catalyst must respond to unexpected operating conditions (such as "temperature runaway"). Maintaining feed purity and stable operation are key to extending the catalyst's service life.

◼Does the catalyst require reduction and activation before use?

Yes. The active component nickel in the GR-102 catalyst exists in an oxidized form (NiO). Before use, it must be reduced using hydrogen or a hydrogen-containing process gas at a certain temperature to convert it into catalytically active metallic nickel (Ni⁰).

Shandong Weiyijia Co., Ltd. is a high-tech enterprise dedicated to the field of industrial catalytic purification. We specialize in the research, development, production, and sales of a wide range of high-performance catalysts and purifiers, providing key materials and technical support to the global petrochemical, coal chemical, gas purification, environmental protection, and new energy industries.

As a professional catalyst supplier, we deeply understand the core role of catalysts in downstream processes.

Leveraging years of experience in technology research and development and engineering applications, we have developed several mature product lines, including:

• Desulfurizer Series: Efficiently removes inorganic and organic sulfur from feed gases and liquids, protecting downstream equipment.

• Deoxidizer Series: Precisely removes trace oxygen from olefins (such as ethylene and propylene) to prevent catalyst poisoning.

• Dechlorinator Series: Removes chlorides from process materials, protecting equipment from corrosion.

• Customized Catalysts: We provide customized solutions tailored to our customers' specific process conditions and requirements.

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