Alcoholization gas purification technology
Never stop on the development path of pursuing green chemical industry
Innovation
We adopt the independently developed "non-isobaric alcoholization and purification of ammonia syngas" technology.
The alcoholization system reacts 98.5~99.5% of CO, CO2 and H2 in the feed gas to produce CH3OH, and the alkylate system reacts the remaining CO, CO2 and H2 to produce CH4.
The alcoholization system produces methanol as a byproduct and also has purification functions. The alkylation system has deep purification capabilities, purifying CO+CO2 in the raw material gas to ≤10ppm, meeting the quality requirements of ammonia syngas.
Technical Advantages
01
High gas purification result: CO+CO₂<10ppm;
02
High utilization rate of raw material gas: Only trace amount of CO+CO₂ is converted into methane
03
Environmentally friendly: methanol and methane as main byproducts, no large molecular hydrocarbon compound
04
High operational flexibility, flexible adjustment of ammonia-to-alcohol ratio, high economic benefits. Easy control of end-product ratio.
Process Diagram
| 1 | Medium-pressure alcoholization reactor | 2 | High-pressure alcoholization reactor |
| 3 | Circulation pump | 4 | Recycling oil separation |
| 5 | 2# alcohol washing tower | 6 | Preheater before alkylation tower |
| 7 | Alkylation reactor | 8 | Fresh gas oil separation |
| 9 | Compressor | 10 | Compressor oil separation |
| 11 | Temperature-raising heat exchanger | 12 | 3# water cooler |
| 13 | 1# water cooler | 14 | 1# methanol separator |
| 15 | Preheater before alcoholization tower | 16 | 2# water cooler |
| 17 | Ammonia cooler | 18 | Water separator |
| 19 | 1# alcohol washing tower | 20 | 2# methanol separator |
Applications
May 2004
The "non-isobaric alcoholization and purification of ammonia syngas" technology was successfully applied for the first time, creating an integrated process for deep purification of synthesis ammonia raw material gas consisting of four subsystems: medium-pressure alcoholization, high-pressure alcoholization, high-pressure alkylation, and ammonia synthesis. This significantly improves the conversion rate of CO and CO₂ and achieves a final purification level of ≤10ppm for the raw material gas, with no byproduct emissions. It fully realizes system self-heating, with advantages in operational economy, safety, stability, and environmental pollution.