Energy savings and consumption reduction in the methanol process?

Variable-frequency evaporative air coolers are used in the newly built units (methanol synthesis, distillation processes)

The greatest way to save energy and reduce consumption is to utilize the heat generated from conversion and synthesis for distillation heating!

By using variable-frequency air coolers, variable-frequency fans in water cooling towers, steam turbines to power large-scale operating equipment when steam is available, proper insulation measures, and starting the equipment appropriately based on production load, there is still great potential!

The methanol distillation process employs an energy-saving double-effect three-column system. Achieve comprehensive utilization of energy

As far as I know, using three-column distillation in the distillation process can help save energy.

In methanol production, waste heat recovery is quite important; utilizing the steam generated as a by-product of conversion and synthesis processes as alternative heat sources can help reduce energy consumption. Nowadays, triple-column double-effect distillation is commonly used in methanol distillation, which effectively lowers energy use. In actual production, it is essential to operate strictly in accordance with the process parameters, and continuous improvement efforts are needed to optimize these parameters. I believe that careful operation can also help reduce energy consumption.

In the methanol production process, energy savings and consumption reduction should be considered from multiple aspects: 1. Superheated steam should be used for gas generation to increase the rate of steam decomposition; the process should be adjusted promptly according to the conditions of the furnace, and the carbon layer percentage should be controlled carefully. The ash bin should be modified, and an ash scraper with strong slag-breaking capacity should be used. Efforts should be made to recycle the blowing air in order to produce more steam. 2: Desulfurization is carried out using the currently popular blank tower technology, which reduces resistance, increases the air volume entering the fan, and enhances the fan’s capacity. At the same time, the composition of the desulfurization solution is carefully controlled to reduce alkali consumption, and regeneration as well as the concentration of suspended sulfur are properly managed. 3: The purification system uses low-temperature, sulfur-resistant catalysts to reduce steam consumption; synthetic by-product steam is utilized, and for decarburization, MDEA or pressure swing adsorption is employed as appropriate, depending on the steam balance. 4: Compressors are equipped with backpressure or fully condensed turbines, based on the overall steam balance of the plant, and steam should be utilized in a stepwise manner. 5: The synthesis system adopts a low-pressure process; energy must be effectively recovered. The amount of alcohol present should be higher than the designed level, or a second stage of alcohol separation should be implemented to reduce the alcohol content at the inlet of the synthesis tower. 6: After adopting a three-tower distillation process, it is advisable to add a recovery tower to recover methanol from the mixed alcohol streams, thereby reducing methanol losses and increasing efficiency. 7: Variable frequency control should be used for pumps such as those used for desulfurization, decarburization, and distillation. 8: Desalinated water and circulating water should also be utilized in a stepwise manner; the wash water from desalination processes can be used as supplementary water for the circulating water. To improve the utilization rate of primary water, pre-treatment of this water can be enhanced. 9: The circulating water fans are equipped with frequency converters, while the distillation synthesis coolers use air coolers