Method and equips for manufacturing dimethyl ether with synthesis gas as raw material by using circulating current bed

[0043] Example 1

[0044] Using synthesis gas as raw material, the production unit with an annual output of 100,000 tons of dimethyl ether, the hourly output of dimethyl ether is 13.89t, and the gas composition of the incoming fluidized bed: H 2 = 48%, CO = 46%, CO2 = 2%, CH 4 =4%. The inlet flow bed synthesis gas pressure is 5.0Mpa, the temperature is 268℃, and the flow rate is 104000Nm 3 / h. The inert medium is n-pentadecane, and the circulation volume is 196m 3 , 42m suspended in circulating fluid 3 catalyst.

[0045] The entrained bed adopts 4 nozzles, which are evenly arranged along the upper periphery of the entrained bed. The nozzles are in the form of three channels. The injection speed of the synthesis gas is 190m / s. s. The effective diameter of the entrained bed is 2m and the effective height is 7.5m. About 1% of the n-pentadecane is vaporized. The effective height of the bubbling bed is 10m, and it is cooled by 1.0Mpa saturated water,