| 摘要 |
A converter for high-pressure synthesis of ammonia or methanol having an upright outer pressure shell consisting of a cylindrical middle body and two hemisphere-like heads, a thin walled conforming liner in the shell, an upright conduit axially centered in the shell which extends along the whole length of the cylindrical middle body, from a built in grating in the lower hemisphere like head close to a manhole atop the upper head, the manhole being just large enough for insertion of the conduit therethrough. A body of particulate catalyst material fills the annular space between the liner and the conduit and extends from the grating almost to the top end of the conduit. Cooling means are axially spaced through the bed. An electric heater and a shell and tube heat exchanger are arranged one above the other in the conduit, both adapted for preheating of the main portion of the gaseous reactants before the reactants enter the catalyst body. The remainder of the reactants is injected into the catalyst body through the cooling means which comprise at least one system of gas permeable coffers extending radially over the entire flow section of the catalyst bed. |
