Large-scale Ammonia Synthesis Technology
Never stop on the development path of pursuing green chemical industry
Innovation
By adopting our self-developed high-performance ammonia synthesis reactor (With zero-meter gas cyclone mixer, fish scale plate radial distributor, unequal diameter small hole distributor,new type of deflection rod heat exchanger) and direct-connected residual heat recovery or heat exchange technology, we have developed full radial large-scale low-pressure GC-type ammonia synthesis reactor and process technology.
Technical Advantages
01
Reactor with Low Resistance: 0.15~0.25MPa
02
High Ammonia Purity: 17.5~18.5%
03
Efficient Heat Recovery and High-quality By-product Steam: 950~1150kg/TNH3
04
Uniform gas Distribution: Gas Non-Uniformity ≤5%. Secondary Distribution Technology is applied in the Radial Basket (or Gas Collector).
05
Better catalyst bed layer design and allocation: Special GC-Reactor Design Software is developed for catalyst bed layer design and allocation to achieve higher performance.
06
Stable when in Operation: Flexible adjustment means, smooth curve of temperature control.
07
Automatic discharge of all Catalysts: Short catalyst loading and unloading time, higher efficiency
Ammonia Synthesis Technology
01
Advanced structure design of the ammonia synthesis reactor. Higher ammonia purity, lower resistance, and lower energy consumption.
02
Lower Capex investment, better safety performance. Direct connection between reactor and residual heat recovery system (steam superheater, residual heat boiler, boiler feedwater heater, etc.)
03
Two-stage ammonia cooling,
high compatibility of gas-ammonia pressure levels, and low energy consumption for refrigeration. Large amount of by-product steam, high steam quality.
Process Diagram
| 1 | Ammonia Synthesis Reactor | 2 | Residual Heat Boiler |
| 3 | Steam Superheater | 4 | Boiler Feedwater Preheater |
| 5 | Heat Exchanger | 6 | Heat Exchanger |
| 7 | Water Cooling Heat Exchanger | 8 | 1st Stage Ammonia Separator |
| 9 | 1st Stage Anhydrous Ammonia Heat Exchanger | 10 | 2nd Stage Ammonia Separator |
| 11 | 2nd Stage Anhydrous Ammonia Heat Exchanger | 12 | Flash Tank |
| 13 |
Ammonia Scrubbing Tower |
14 |
Circulating Compressor |
Applications
October 2011
A 360,000 tons/year ammonia synthesis unit adopted GC-type large-scale low-pressure ammonia synthesis reactor and directly connected residual heat boiler, marking the comprehensive localization of large-scale synthetic ammonia technology in China.
July 2020
A 600,000 tons/year ammonia synthesis unit adopted GC-type large-scale low-pressure ammonia synthesis reactor and directly connected steam superheater, comprehensively surpassing the performance of foreign advanced ammonia synthesis reactors (with the same reactor diameter and catalyst quantity), ending the history of foreign monopoly on super-large-scale ammonia synthesis technology.