The production device comprises a
crusher, an acid
mixing tank, a
hydrolysis kettle, a filter, a condenser, a
buffer tank, a light component removal
tower, a heavy component removal
tower, an
aldehyde-water separator, a decolorizing tank, an intermediate
buffer tank, a neutralizing tank, a dehydrating
tower, a rectifying tower and a refined
aldehyde storage tank which are connected in sequence. The production method specifically comprises the following steps: (1) crushing a
plant fiber material, and mixing the crushed
plant fiber material with a dilute
sulfuric acid solution; (2)
hydrolysis reaction,
filtration, condensation, light component removal, heavy component removal,
aldehyde-water separation and adsorption decolorization; and (3) mixing with alkali liquor, dehydrating and rectifying. The method provided by the invention has the advantages of high product purity, good separation effect, low operation
energy consumption,
environmental protection,
sustainability, realization of
continuous operation, low production device equipment investment, simple production
process operation, easy reaction control, full utilization of
furfural wake fraction, and high economic benefit, and accords with the market prospect.