Patent granted for using steam generated as a by-product in Xinjiang Tianye DMO to feed into nitric acid reduction towers/for ammonia extraction from gasification ash water

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According to a report from Xinjiang Tianye in March 2026, the ethylene glycol production facility of Tianye Huihe New Materials Co., Ltd. successfully overcame the common industry challenge of low efficiency in recycling the steam generated as a by-product of the DMO (dimethyl oxalate) reaction process, thereby providing new impetus for the company’s sustainable and low-carbon development. The nitric acid reduction tower in the ethylene glycol production unit of Tianye Huihe New Materials has long relied on external 0.5MPa fresh steam for heating, while the low-pressure waste heat steam generated by the DMO synthesis reactor has not been utilized effectively to date. Tianye Huihe New Materials Company proposes to directly introduce the low-pressure steam generated in vessel B of the DMO synthesis reactor into the nitric acid reduction tower, as a replacement for the steam used in the original design. After the renovation, the heating performance of the nitric acid reduction tower remained stable, all process parameters met the production requirements, and the system operated smoothly and reliably. According to the Management Committee of the Shihezi High-Tech Industrial Development Zone, the method titled “A Method for Ammonia Extraction from Gasification Ash Water” submitted by Xinjiang Tianye Huihe New Materials Co., Ltd. has successfully obtained a **patent grant. This patented technology extends the stable operation period of the ammonia recovery tower significantly by optimizing the process flow and key components, raising the original operation duration of around 20 days to over 6 months. Xinjiang Tianye Huihe’s 600,000 tons per year ethylene glycol production facility utilizes Tsinghua-type coal-water slurry gasification, shift reaction, methanol washing, and hydrogen/carbon monoxide separation technologies, as well as advanced chemical processes for the production of ethylene glycol; it generates 600,000 tons of ethylene glycol per year, while also producing 255,000 tons of methanol as a by-product at low pressure.