Cobalt Oxide Catalyst
Cobalt Oxide Catalyst for Ammonia Oxidation reduces Catalyst cost up to 75%
Since their discovery Nitric Acid and Nitrogen Oxide have been produced using a Platinum/Rhodium catalyst. CDC's Cobalt Oxide Catalyst is used as an alternative to solve several problems such as the increasingly higher cost of platinum; the short operating cycles; and the by-product reaction producing N²O. Cobalt oxide catalyst is used in nitric acid plants as an alternative to the Platinum-based catalyst. By using cobalt oxide catalyst, plants have shown increased production at significantly reduced operating costs.
CDC's Cobalt Oxide Catalyst technology improves operating cycles and increases efficiency over platinum catalyst technology.
Metal oxide catalyst, an alternative to platinum based gauze, is now available from Catalyst Development Corporation (CDC). CDC offers two kinds of cobalt oxide ammonia oxidation catalysts. One, in1/8” pellets (a form available for the last 20 years). The other is a honeycomb cross-section.
CDC's pellet type catalyst (PC-100) has been proven to yield a 95% conversion efficiency in high pressure nitric acid plants. Although capable of being utilized in high pressure plants, our Honeycomb type catalyst (HC-200) has been developed to be used in low pressure nitric acid plants. Conversion efficiency of HC-200 catalyst is about 95% in high pressure service (up to 145 psig) and 98% in low pressure plants (up to 15psig).
A CDC Reactor design using PC-100 catalyst is similar to platinum based reactors, but is about 50% larger in diameter. HC-200 catalyst reactors can also be located either in a vertical or horizontal positon.HC-200 does not require any Grid Bars or an expensive reactor. A reactor using HC-200 catalyst may be made more economically from carbon steel construction with a refractory lining. The relative low cost of CDC's Cobalt Oxide catalyst compared to the skyrocketing costs of Platinum material based reactors make the CDC catalyst systems very attractive replacements now, and for sustained long term operational cost savings.
Both catalysts operate at around 1550 F, depending upon operating pressure with an approximate 10% ammonia mix. Preheat temperature is usually 300 F. Pressure drops are nominally 15” WC. for PC-100 and 5” WC. for the HC-200 catalyst.
Normal service life for the PC-100 catalyst is 5 years. The catalyst does not need replacing during this time. Normally, one full bucket of catalyst may be added to the top of the bed during turnarounds to make up for a 1% annual attrition loss. HC-200 can be used for about 6 years without loss of efficiency.
CDC is eager to talk with you and to demonstrate either of these catalysts' viability for your plant. We may be reached easily through the “contact” link on this website. We look forward to discussing improvements to your plant's efficiency using CDC's cost effective catalyst and system designs.