Conversion catalyst application and characteristics:

1.1, Application:

The conversion catalyst is mainly used for deep conversion of carbon monoxide in synthetic ammonia plants, methanol plants, and hydrogen production units. This low temperature conversion catalyst is suitable for various syngas purification processes, effectively reducing CO content to meet stringent downstream synthesis requirements.

1.2, Characteristics:

Our low temperature conversion catalyst is produced with high-quality electrolytic copper and zinc as raw materials through advanced co-precipitation technology. This conversion catalyst features low impurity content, uniform and stable composition. Developed in collaboration with domestic well-known colleges and universities, this new generation conversion catalyst achieves low water vapor ratio operation and low CO outlet content. This conversion catalyst utilizes innovative production technology to increase the dispersion of the effective component copper oxide, enlarging the surface area of effective copper, resulting in superior low temperature activity, enhanced stability, stronger resistance to toxicity, resistance to thermal aging, high mechanical strength, resistance to powdering, and extended service life. The low temperature conversion catalysis system employs copper oxide as the active component, with zinc oxide and alumina added simultaneously to prevent the growth of copper microcrystals within the catalyst. Copper oxide is reduced into fine-grained copper microcrystals before activation. The reaction formulas are as follows:

CuO+H₂ = Cu+H₂O △H⁰₂₉₈ =-12.7KJ/mol

CuO+CO = Cu+CO₂ △H0298 = -85.83KJ/mol

Chemical components and physical properties of conversion catalyst:

2.1 Physical properties:

2.2 Chemical composition:

3, Quality standards:

Conversion catalyst features:

1. Good heat resistance and low temperature activity:

Our conversion catalyst belongs to the Cu-Zn series catalyst system. Experimental results demonstrate that after heat resistance testing, the conversion catalyst maintains high activity with excellent CO conversion performance. This conversion catalyst features high low temperature activity with minimal side reactions, ensuring efficient syngas purification.

2. High mechanical strength:

The conversion catalyst adopts advanced forming technology, providing high mechanical strength and resistance to pulverization and crushing. This ensures low bed pressure drop and stable operation in industrial reactors.

3. Long service life and good selectivity:

This conversion catalyst offers extended service life with excellent selectivity. It is suitable for high, medium, and low pressure methanol synthesis production, and is primarily used in ammonia synthesis and methanol production processes. The conversion catalyst can also be applied to various pressure systems for optimal performance.

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Related Conversion Catalyst Products

Xinye Catalyst provides a complete range of conversion catalysts and syngas purification solutions. Explore our related products to find the best fit for your process conditions:

Use Precautions of Low Temperature Conversion Catalyst:

● Because the main active component of the low-temperature conversion catalyst is copper oxide, special attention should be paid to the following points to protect the low-temperature activity and extend the service life of the catalyst.

● Low temperature conversion catalyst CO conversion reaction is: CO+H₂O＝CO₂+H₂ △H0298＝－41.1KJ/mol

This is a reversible exothermic reaction. From the thermodynamic point of view, the lower the temperature, the more favorable the reaction proceeds to the right. From a kinetic point of view, the higher the temperature, the higher the reaction speed. Therefore, temperature control must be carefully balanced with reaction speed and the performance characteristics of the conversion catalyst.

● Our low temperature conversion catalyst uses copper as the main component, providing good activity and selectivity for carbon monoxide conversion. The conversion catalyst achieves higher conversion rates in the lower temperature operating range. However, the melting point of copper in the low temperature conversion catalyst is relatively low, making the conversion catalyst very sensitive to temperature. The addition of zinc oxide and alumina in the low temperature conversion catalyst improves the thermal stability of copper microcrystals, but does not fundamentally change the nature of metal copper "semi-melting". Excessively high process operating temperature and accidental overtemperature will accelerate its "semi-melting". When the temperature exceeds the recommended operating limit, dispersed and fine copper grains are prone to lose activity due to sintering. Therefore, the operating temperature of the low temperature conversion catalyst must be strictly controlled within the specified range.

● The inlet temperature should be operated within the recommended range. Under the premise of meeting the outlet carbon monoxide process conditions and ensuring that the steam is not condensing, it should be operated at a lower temperature as far as possible. This is not only conducive to extending the service life of the low-temperature conversion catalyst, but also beneficial to process balance. The conversion catalyst typically does not require temperature increase during the early and middle stages of operation.

● The reduction reaction of the low temperature conversion catalyst is a strong exothermic reaction. When low concentration hydrogen and low temperature reduction are used in the early stage of reduction, it should be noted that the reduction requires a long induction period. Do not rush to increase the temperature and hydrogen concentration because there is no immediate temperature rise or hydrogen consumption, which may result in overtemperature and damage to the catalyst. Due to the intense exothermic reaction, the temperature may rise rapidly and potentially burn the conversion catalyst if proper procedures are not followed.

● Because the copper oxide and zinc oxide in the conversion catalyst have high chemical activity toward sulfide and chloride, the catalyst is very sensitive to sulfur and chlorine compounds and is susceptible to their toxic effects. When hydrogen sulfide or organic sulfide enters the shift converter, the copper and zinc sulfide reaction occurs in two steps: The first step generates a sulfide covering layer on the surface of the catalyst, with a very fast reaction speed. However, this reaction step is limited to a single molecular layer, and even a small amount of sulfide can poison a large number of conversion catalysts. The second step involves the diffusion of copper sulfide or zinc oxide atoms through the solid phase from the surface inward, while oxygen atoms in the bulk phase transfer toward the outer surface. This process is relatively slow. Sulfur mainly originates from the raw material gas, air, or previous process catalysts, while chlorine mainly comes from steam or lubricating oil. Therefore, the sulfur content in the raw gas should be strictly controlled within acceptable limits. Otherwise, when sulfur absorption or chlorine content reaches critical levels, the activity of the conversion catalyst will be significantly reduced. In order to ensure reasonable service life of the catalyst, special attention should be paid to preventing the toxic effects of sulfide and chloride.

● Strict precautions must be taken to prevent the condensation of water vapor on the conversion catalyst. The condensation and evaporation of water on the conversion catalyst will affect the physical strength of the catalyst. Additionally, the condensed water may form ammonia water with ammonia produced during the reaction, and the ammonia solution can have a dissolution effect on the active copper, causing serious loss of active surface area and leading to a significant shortening of the conversion catalyst life.

Henan Xinye Catalyst Co., LTD

- Company is a high-tech enterprise engaged in the research and development, production and sales of catalysts.

- The company was founded in 2003. Headquartered in Changzhou, Jiangsu Province and the production base is located in Hebi city, Henan Province, with a total investment of 1.2 billion RMB. We manufacture 20,000 tons of copper catalyst, 2,000 tons of iron catalyst, 1,000 tons of zinc oxide desulfurizer annually, mainly used in coal chemical industry, petrochemical industry, natural gas chemical industry, green hydrogen, green methanol and other modern chemical industry.

- The product is diverse, covering many fields such as petrochemical industry and coal chemical industry. Petrochemical catalysts help efficient cracking and reforming, improve oil quality and production efficiency. Coal chemical catalysts play a key role in coal gasification, syngas conversion and others to promote the clean and efficient use of coal.

- The production strictly follows international high standards and industry norms. We have the advanced automated production equipment and quality testing system. We have won the trust of many customers with high quality products and services. Our products are not only sold well in China, but also exported to overseas markets.

Why Choose Xinye Catalyst?

● Diverse Product Range & Wide Industry Applications

Catalysts serve multiple application areas. Products improve cracking, reforming, gasification and syngas conversion, thereby increasing efficiency and sustainability.

● Advanced Technology & Strict Quality Control

Equipped with automated production equipment and rigorous quality testing systems. Catalysts meet world-class standards in purity, activity, and stability, ensuring superior performance and global competitiveness.

● Strong R&D & Innovation Capabilities

With a cutting-edge R&D center, we collaborate with universities to continuously innovate and can customize and develop high-performance catalysts with high conversion rates, strong toxicity resistance, and long service life.

Production Environment

Transportation and storage of conversion catalyst:

Conversion catalyst must prevent moisture absorption. Handling should prevent collision and beating, with careful handling required throughout the transportation and storage process. If the spent conversion catalyst is to be recycled and reused, it should be sifted in sections, sealed and packed, and properly stored. Toxicology analysis, activity detection, and strength detection can be conducted to assess reusability. The conversion catalyst is typically packed in iron drums lined with plastic bags, with standard net content options available per customer requirements. This conversion catalyst must be kept moisture-proof and should not come into contact with other chemicals. During transportation and loading, drums should not be rolled. When stored in sealed conditions, the product quality will remain unaffected for the recommended storage period.

Our Services

● Customized Catalyst Solutions

Whether it is catalytic reactions in industrial production processes or pollutant treatment in the field of environmental protection, our technical team will have a deep understanding of your production process and application requirements, and provide you with customized conversion catalyst solutions.

● Professional Technical Support

We will assist you in designing the use of catalysts, and provide detailed operation manuals and usage suggestions to help you maximize the effectiveness of conversion catalysts. If you encounter any technical difficulties, our support team will provide you with timely and effective solutions.

● On-site Training and Technical Guidance

In order to ensure that customers can use our conversion catalysts correctly and achieve the best application results, we provide on-site training and technical guidance services. Help employees better understand the use of conversion catalysts, maintenance procedures and how to deal with common problems.

● Product Performance Testing and Evaluation

Customers can conduct small-scale tests in our laboratories or production sites to verify the performance of catalysts in actual applications. We will provide detailed test reports, analyze the performance parameters of conversion catalysts such as conversion rate, selectivity, stability, etc., to help customers make the most appropriate purchasing decisions.

● After-sales Service and Technical Support

Our after-sales service system provides customers with comprehensive guarantees to ensure that the conversion catalysts can continue to work stably during use. We are committed to providing timely technical support, including catalyst replacement, troubleshooting and optimization suggestions during use.

● Product Quality Assurance and Certification

Our conversion catalyst products meet international standards and pass strict quality control and testing. All products undergo strict quality inspections to ensure that the performance of each batch of catalysts is stable and meets industry requirements.