The Hardwood Distillation Industry in New York 45 



Still House. 



The provision for redistilling the pyroligneous liquor is 

 usually housed in the old plants along with the cylindrical 

 retorts but in the more modern oven plants the apparatus is 

 placed in a separate fire-proof building usually in close prox- 

 imity to the power house or in connection with it. 



The equipment of the still house consists principally of 

 the settling tubs, neutralizing tubs, storage tubs, steam pans, 

 copper and iron stills, condensers, fractionating column, etc., 

 required for the three principal distillations previously 

 described. Although the equipment in some small details 

 may vary in each plant, the general process of separating 

 the acetate of lime and the wood alcohol as well as the wood 

 tar, is the same as was in common practice about 20 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. 



The following is the usual equipment used or recommended 

 for a hardwood distillation plant consuming 30 cords of wood 

 per day : 



Eetort 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 con- 

 denser outlets to boiler for fuel. 



5 wooden setting tubs for raw liquor from storage tank above men- 

 tioned. 



1 copper still complete with copper steam coils, neck and condenser 

 for first distillation 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. 



1 iron lime lee still fitted with copper steam coils and condenser 

 (an iron neck may be used on this still). 



