| Product Name | NSPA-NPL4 catalyst for PA production from Naphthalene | |
| Chemical Composition | V-TI metal oxide coated on inert carrier | |
| Physical Properties | Catalyst shape | regular hollow ring |
Carrier size | 7.0*7.0*4.0±0.1mm | |
|
Bulk Density | 0.92-0.95 kg/L in 25mm ID tube | |
| Number of layer | 4 | |
Performance Index | Oxidation Yield | 106-107.5wt% after first year 104.5-106wt% after second year |
Hot spot temperature | 400-440℃（Normal） | |
Catalyst pressure drop | 0.20-0.25 Bar（G） | |
| Catalyst Life | > 2 years | |
| Naphthoquinone content | ≤0.5% | |
| Industrial Operation Conditions | Air flow | 3.0-4.0NCM/tube/h |
O-xylene load | 280g/tube/h（Normal） 300g/tube/h（Max） | |
O-xylene concentration | 70g/NCM （Normal） 75g/NCM （Max） | |
Salt temperature | 355-385℃（According to client plant condition） | |
| Development History | NSPA-NPL4, the number of catalyst layers is 4 layers, which is developed and optimized based on the advanced phthalic anhydride catalyst technology in Europe. This type of catalyst has the characteristics of stable lifetime, high activity and high yield, and the product quality is stable and reliable. At present, the catalyst research and development and trial production, and industrial production have been completed, come into use. Provide catalyst loading and start-up technical services. | |
| At the beginning of 2023 | R&D restarted, confirmation completed | |
| At the middle of 2023 | Industrial trial production,meet technical conditions | |
| At the end of 2023 | Ready for delivery | |
| At the beginning of 2024 | Start Catalyst sales, used in commercial plant | |
| Application case | In 2024, Shijiazhuang Bailong Chemical Co., Ltd, 20,000 MTY PA plant | |
In 2024, Xintai Zhongtai New Material Co., Ltd, 40,000 MTY PA plant | ||
| In 2024, Tongling Organic Chemical Co., Ltd, 20,000 MTY PA plant | ||
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