Mechanical Development Recommendations.

摘要

A shortage of natural gas has stimulated the development of methods for converting coal into pipeline quality gas. Several promising new processes are being sponsored under the joint ERDA-A.G.A. program. Those processes employ severe operating conditions in order to achieve efficient coal conversion. The severe conditions of temperature,pressure,corrosion,and erosion places a strain upon existing technology. The coal gasification processes are scheduled for pilot plant operation at three to five tons of coal per hour. The more promising processes may be scaled up to demonstration plant size of 150to 450tons of coal per hour. The success of any demonstration plant will depend largely upon having reliable mechanical equipment. This report gives the results of a study of mechanical equipment needed by a large coal gasification plant. It was found that certain items of mechanical equipment are lacking in the sense that they are either unavailable or unproven for the large size and severe service. Mechanical development programs are recommended in the following categories:coal identification,size reduction,drying,classification,storage,and handling;coal feed injection into gasifier;large size valves;solids removal from gaseous streams;power recovery expanders;waste heat boilers;and test facility. (ERA citation 03:005789)