A process method for the clean production of saponin using ginger, realized by the following process steps:
(1) raw material pretreatment: cleaning ginger, crushing with a crusher, crushing and then grinding into a pulp with a mill, so that the particles in the pulp reaches 30 mesh, the concentration of mass percentage of 30%;
(2) extraction of saponin slurry: with a variable frequency differential speed horizontal spiral discharge sedimentation centrifuge Separation, separation of starch, saponin pulp;
(3) saponin pulp placed at room temperature, natural fermentation for 36 hours;
(4) acid hydrolysis: the fermented saponin pulp into the hydrolysis tank, sulfuric acid acid acid hydrolysis, pressure control at 0.2MPa, after the hydrolysis of the saponin pulp;
(5) acid washing and de-watering: filter press on the Acid washing and de-watering: in the filter press, to get the slag; at the same time, produced sewage;
(6) drying: put the slag into the sandwich through the steam vacuum dryer for drying, control the water content of the slag in the 3 ~ 5%;
(7) put the dried slag into the extraction tank, add No. 120 gasoline, saponin pulp and gasoline mass ratio of 5:6, heating to 90 degrees Celsius, the extraction time is 2 hours, to get the saponin slurry after hydrolysis. Time is 2 hours, get saponin gasoline mixture; at the same time, the fiber can not be dissolved to separate out;
(8) the saponin gasoline mixture after concentration, crystallization to get the finished product;
(9) the step (5) produced by the sewage discharge to the neutralization pool and lime neutralization and reaction, into the electrolysis device for electrolysis, and then into the hydrolysis of anaerobic pool for anaerobic biological treatment, and then Into the three tandem use of push-flow aeration pool for biological reaction treatment, and finally into the sedimentation tank for precipitation, after treatment of water fully meets the standards, and recycling for step (1) and step (5).
