Economic Impact of NMMO Pretreatment on Ethanol and Biogas Production from Pinewood

Table 2

The process conditions for equipment of ethanol distillation in Figure 3.

Equipment/; conditions	Beer column	Scrubber column	Rectifier column	Molecular sieve unit
Top input (°C)	50^a, 40^b	25	—	—
Bottom input (°C)	110	39	90	106
Top output (°C)	60	39	106	103
Bottom output (°C)	67.6	40	132	103
Top input (barg)	0.5^a, 0.5^b	1	—	—
Bottom input (barg)	0.43	0	3	1.9
Top output (barg)	−0.81	−0.1	1.9	0.8
Bottom output (barg)	−0.61	0	2.2	0.8
Number of trays	30	10	35	Packed

The temperature of feed stream.
^bThe temperature of stream from scrubber.