41results about How to "Avoid solid waste" patented technology

The present application belongs to the technical field of sugar alcohol preparation, and relates to a system and a method for co-production of L-arabinose and caramel colorant by using xylose chromatography raffinate, which comprises a raw material tank, a nanofiltration membrane separator, a chromatographic separation device, an evaporation and concentration tank, a crystallization tank, a centrifugal separator and a dryer which are sequentially connected by pipelines, and a browning reaction assembly for mixing the raffinate and the centrifugal mother liquor and then performing browning reaction treatment to prepare caramel colorant. The chromatographic separation device is used for separating the nanofiltration permeate flowing therethrough into extract and raffinate, the evaporation and concentration tank and the crystallization tank are used for concentrating and crystallizing the extract flowing therethrough into sugar paste, the centrifugal separator is used for separating the sugar paste flowing therethrough into moist sugar and centrifugal mother liquor, and the dryer is used for drying the moist sugar flowing therethrough into L-arabinose crystals. The present application mixes the raffinate and the centrifugal mother liquor to prepare caramel colorant liquid product, thereby improving the utilization rate of sugar resources and obtaining caramel colorant additional product.