HARDWOOD DISTILLATION 211 



the acetate of lime and the wood alcohol, as well as the wood tar, is the 

 same as was in common practice about twenty years ago. 



For each separate plant, however, individual plans are drawn up to 

 meet the requirements of local conditions. Altogether it is estimated 

 that the equipment of the still house costs between $430 and $500 per 

 cord of daily capacity. In the description of processes of manufacture, 

 the function of the various equipment in the still house is described. 



FIG. 60. Interior of the still house at a hardwood distillation plant in Pennsylvania. 



The following is the usual equipment used or recommended for a 

 hardwood distillation plant consuming 30 cords of wood per day: 



Retort condensers including tubs and outlet connections, number and size depending 

 upon style of retort or oven installed. 



Copper liquor run for conducting raw liquor from condenser outlets to storage tub. 



Copper gas main and connection for conducting wood gas from condenser outlets to 

 boiler for fuel. 



5 wooden settling tubs for raw liquor from storage tank above mentioned. 



i copper still complete with copper steam coils, neck and condenser for first distilla- 

 tion of raw liquor. Wooden storage tubs for liquor from copper still. 



Wooden liming tub with power agitator for neutralizing liquor from storage tubs 

 above mentioned. 



i iron lime lee still fitted with copper steam coils and condenser (an iron neck may be 

 used on this still). 



