The invention belongs to a device and method for making shifted gas for synthesis of
ammonia synthesis poly-generation
methanol. The device comprises a mechanical part and a control part. The mechanical part comprises a gasification washing
tower, an outlet of the gasification washing
tower is connected with an inlet of a second heat and condensate recycling unit through a
pipe, the
pipe between the outlet of the gasification washing
tower and the second heat and condensate recycling unit is sequentially provided with a fifth tee joint, a first self-regulating valve, a first tee joint and a second tee joint, an outlet of the second heat and condensate recycling unit is connected with an inlet in the middle of a second
ammonia-washing tower, and a
gas phase outlet in the top of the second
ammonia-washing tower is connected with an inlet in the lower portion of a shifted gas washing tower for synthesis of
methanol through a
pipe; the control part comprises a first
online analysis and calculation display instrument, a second
online analysis and calculation display instrument, a second self-regulating valve and a third self-regulating valve. The device and method have the advantages that matching efficiency and accuracy are high, a great number of regulating means are adopted, a great amount of high-quality steam is generated, and meanwhile the content of COS in the
methanol removing and washing shifted gas is lowered.