Our Crude Methanol Refinery Technology specializes in upgrading raw, low-grade methanol into high-purity refined methanol suitable for commercial and industrial applications. The process integrates distillation, purification, and impurity removal systems—including advanced rectification columns and chemical treatment units—to effectively eliminate water, ethanol, acetone, and other trace by-products.
Designed for energy efficiency and low operational cost, our technology achieves methanol purity levels up to 99.99% with minimal product loss. It is ideal for methanol plants seeking to improve product quality, recover value from off-spec crude methanol, or reduce environmental discharge.
Key features include corrosion-resistant modular designs, automated process control, and flexible capacity scaling. Whether for fuel-grade or chemical-grade methanol production, our solution delivers consistent output with reduced steam and power consumption, supporting both economic and sustainability goals.
Crude methanol rectification process includes single-column process, two-column process, three -column process and energy-saving three-column process. The feature of Four processes are as follows:
No. | Crude methanol rectification process | Feature |
1 | single-column process | 1. Methonal-water regroup, separate in one column |
2 | two-column process | 1. The combination of pre-recification column and main rectification column |
3 | three-column process | 1. Three rectification column work under the same pressure. The third rectification column produces |
4 | energy-saving three-column process | 1. Two main rectification columns and final rectification column, the first main rectification column is pressure-increasing column. The second one is normal pressure column. Two columes produce 50%-50% |
Our company's crude methanol distillation technology is based on the fourth energy-saving three-tower process, the main feature is to fully optimize the heat transfer network, so that the use of steam and circulating water to a minimum, in order to achieve energy conservation and investment optimization.
(1) High yield of the process: fine methanol recovery rate of 99.86% (refined methanol production and feed the amount of methanol contained in the ratio)
(2) Using a mature double-effect distillation method: the use of pressurized overhead gas phase for the atmospheric tower reboiler heat source.
To 300,000 tons / year 90.82% methanol distillation as an example.
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