A Syngas Shift Process
A synthesis gas and process technology, applied in hydrogen/synthesis gas production, inorganic chemistry, chemical instruments and methods, etc., can solve problems such as reducing reaction speed, and achieve the effect of low operating cost, simple and feasible operation
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[0041]A synthesis gas shift process, the synthesis gas containing CO is passed through a pressurization device, pressurized to 1.5MPa-3.0MPa, passed into the shift device, and water vapor is passed at the same time, in the presence of a shift catalyst, and the shift The temperature of the device is 150-1000°C, CO and water react to obtain a shift gas in which H 2 The molar ratio to CO is not less than 2.9.
[0042] The raw material low-rank coal of the present invention can be pulverized coal or lump coal, and when the low-rank coal adopts lump coal, the oversized lump coal can be processed by crushing and screening to obtain pulverized coal with smaller particle size. It is preferred to use pulverized coal as a raw material. On the one hand, pulverized coal does not need to be crushed and screened, which saves process steps. The heating area during drying is large and the drying efficiency is high. On the other hand, pulverized coal is relatively cheap compared to lump coal. ...
experiment example 1
[0049] A synthesis gas shift process, the synthesis gas containing CO is passed through a pressurization device, pressurized to 1.5MPa-3.0MPa, passed into the shift device, and water vapor is passed at the same time, in the presence of a shift catalyst, and the shift The temperature of the device is 150-1000°C, CO and water react to obtain a shift gas in which H 2 The molar ratio to CO is not less than 2.9.
[0050] In Experimental Example 1, the synthesis gas sent from the previous section was pressurized at 1.5-3.0MPa, and the temperature was raised by 150-500°C through the heat exchanger, and then mixed with the self-produced steam from the synthesis to control the appropriate water-gas ratio Entering the shift furnace, the temperature of the shift gas exiting the shift furnace is 300-500°C, and the temperature of the shift gas is exchanged with the raw material gas through a heat exchanger to lower the temperature, and then the temperature is lowered by 10-50°C through the...
experiment example 2
[0054] Experimental Example 2 refers to Experimental Example 1. The difference is that in the shift process of Experimental Example 2, before the synthesis gas is passed into the shifter, it flows through the first preheating device and is preheated to 150-250°C. Before the steam is passed into the conversion device, it flows through the second preheating device and is preheated to 200-1000°C. The purpose is to more accurately control the reaction temperature of the transformation reaction.
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