300,000 tons of synthetic ammonia
Thread Content
Our company plans to install a set of facilities for producing 300,000 tons of synthetic ammonia and 600,000 tons of caustic soda. Ammonia synthesis employs 6.5 MPa, four-nozzle gasification technology, low-temperature shift, low-temperature methanol washing, sulfur recovery, liquid nitrogen washing, and ammonia synthesis. Those interested, QQ: 1792717029
Where is the factory located? What process is used in ammonia synthesis towers?
The factory is in Jiangsu; the synthesis tower has been in contact with Casali
Which design institute is responsible for the overall design?
I wonder why your company isn’t producing 500,000 tons of synthetic ammonia at present. Personally, I feel that Cassali’s process doesn’t have as good overall performance as Topsoe’s; a thorough technical comparison is needed, along with more technical exchanges and inspections among the manufacturers involved. After all, this isn’t a simple matter – it affects the overall economic efficiency in the long run
KBR also has good overall process performance, but it depends on the cost you have to pay for achieving those performance metrics. Casali is similar to Topso, but Topso costs 30-50% more; better performance characteristics come at the cost of a higher initial investment, so it depends on what you prioritize. To give a simple example, if you increase the size of the heat exchanger, the amount of heat that can be recovered will be greater; however, you need to consider both the initial investment and the energy savings obtained to determine whether it is worthwhile.
It’s better to think ahead a bit; don’t focus only on the present. Of course, the most expensive option isn’t necessarily the best one – what’s suitable is what matters, haha. I’m just giving you some advice
The technology of gasification furnaces with 6.5 MPa and opposing four nozzles is not yet widely available in China; there is still much to be explored. As far as I know, the operating load of Jiangsu Supor and Xinneng Phoenix is only 80%-90%, and problems occur from time to time during operation. I suggest that the original poster go and investigate this!
The wet sulfuric acid production method used by Topsoe in sulfur recovery technologies has advantages over the Claus sulfur recovery process. Firstly, the plant operates more stably, as there is no issue of liquid sulfur solidifying into a solid in Claus systems, which could lead to blockages in equipment and pipelines. Secondly, the operating cost of Klaus sulfur recovery units is high, whereas the use of Topsoe’s wet sulfuric acid production process reduces these costs; it not only allows for the production of 98% concentrated sulfuric acid but also generates high-pressure superheated steam as a by-product. Third, the process flow is simple. Fourth, it is easier to meet environmental protection requirements in terms of exhaust emissions. Fifth, it occupies a small area.
It is a sulfur-resistant shift process, not a low-temperature shift!
A 600,000-ton caustic soda plant, along with a 200,000-ton ammonia synthesis unit, is sufficient.