Systems and methods for utilizing corn cobs to jointly produce premium xylose and high-end caramel pigment

A system for utilizing corn cobs to jointly produce a premium xylose and a high-end caramel pigment, comprising a xylose preparation subsystem, an enzymatic hydrolysis subsystem, and a caramel pigment preparation subsystem that are connected to each other through pipelines;

• wherein
• the xylose preparation subsystem includes a raw material tank, a pretreatment tank, an acid hydrolysis kettle, a plate and frame filter press device, a filtrate neutralization tank, a nanofiltration membrane separator, an electrodialysis separator, an evaporation concentration tank, a crystallization tank, a centrifugal separator, and a dryer that are connected in sequence through pipelines;
• the enzymatic hydrolysis subsystem includes a filter residue neutralization tank and an enzymatic hydrolysis reaction kettle connected through pipelines;
• the caramel pigment preparation subsystem includes a sugar liquid mixing tank, a browning reaction kettle, a flash tank, an ultrafiltration membrane separator, and a wiped film evaporator connected in sequence through pipelines;
• and
• the plate and frame filter press device is provided with a filtrate outlet and a filter residue outlet;
• the filtrate outlet is connected to the filtrate neutralization tank through a pipeline;
• the filter residue outlet is connected to a feed port of the filter residue neutralization tank through a pipeline, the centrifugal separator is provided with a solid outlet and a liquid outlet, the solid outlet is connected to a feed port of the dryer through a pipeline, and the liquid outlet is connected to one feed port of the sugar liquid mixing tank, the other feed port of the sugar liquid mixing tank is connected to a discharge port of the enzymatic hydrolysis reaction kettle through a pipeline, the raw material tank stores a raw material to be processed of the corn cobs, a material output by a discharge port of the dryer is the premium xylose, and a final material obtained from a discharge port of the wiped film evaporator is the high-end caramel pigment.