Heat integrated utilization system and method in methanol production process

The invention relates to a heat integrated utilization system and method in a methanol production process, the heat integrated utilization system comprises a heat exchange unit, the heat exchange unit comprises a heat exchanger, a pre-tower bottom reboiler, a hot water tank and a hot water pump, a f...

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Bibliographische Detailangaben
Hauptverfasser: XIANG YUNGANG, LIU XUEPENG, WANG WEN, WANG HAI, LIU YUTONG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention relates to a heat integrated utilization system and method in a methanol production process, the heat integrated utilization system comprises a heat exchange unit, the heat exchange unit comprises a heat exchanger, a pre-tower bottom reboiler, a hot water tank and a hot water pump, a first inlet of the heat exchanger is connected with a reaction gas outlet of a methanol synthesis tower, and a second inlet of the heat exchanger is connected with a second inlet of the pre-tower bottom reboiler; an inlet of the pre-tower-bottom reboiler is connected with a first outlet of the heat exchanger, an outlet of the pre-tower-bottom reboiler is connected with an inlet of the hot water tank, an outlet of the hot water tank is connected with an inlet of the hot water pump, and an outlet of the hot water pump is connected with a second inlet of the heat exchanger. According to the method, a low-temperature heat system is established, hot water serves as a medium, and unutilized heat of reaction oil gas at an