Abstract:
PURPOSE: Provided are a method and a device which substantially increase a reaction rate of hydrolysis using a supercritical water and improve the yield of hydrolysis. CONSTITUTION: The method comprises the steps of (i) heating and pressurizing a raw water containing a small amount of sulfuric acid or sulfate in a heating part(4), (ii) providing the raw water to reactor(8) together with cellulose slurry provided by the slurry pump(10) to effect a hydrolysis, (ii) terminating a reaction by firstly cooling the reactants discharged from the reactor(8) with cooling water provided from cooling water tank(12), (iii) completely terminating a reaction by secondarily cooling the reactants by heat exchanger(13), (iv) passing the reaction product to filter unit(14) to filter an unreacted cellulose, while the filtrate being obtained from a product collecting tank.
Abstract:
PURPOSE: Provided are a method and a device which substantially increase a reaction rate of hydrolysis using a supercritical water and improve the yield of hydrolysis. CONSTITUTION: The method comprises the steps of (i) heating and pressurizing a raw water containing a small amount of sulfuric acid or sulfate in a heating part(4), (ii) providing the raw water to reactor(8) together with cellulose slurry provided by the slurry pump(10) to effect a hydrolysis, (ii) terminating a reaction by firstly cooling the reactants discharged from the reactor(8) with cooling water provided from cooling water tank(12), (iii) completely terminating a reaction by secondarily cooling the reactants by heat exchanger(13), (iv) passing the reaction product to filter unit(14) to filter an unreacted cellulose, while the filtrate being obtained from a product collecting tank.