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(11)    Patent No :    AP 2637    (73) Applicant(s)       
(21)    Application No :    AP/P/2010/005196    CHEN Peihao, Room 606, Bldg. D Dongcheng Teacher       
            Building, Dongcheng Dongguan, Guangdong, 523129,       
(22)    Filing Date :    29.07.2008    Peoples Republic of China       
(24)    Date of Grant &    05.04.2013           
(45)    Publication :

(30)    Priority Data            (72) Inventors   
    (33) Country    (31) Number    (32) Date    CHEN Peihao, China   
    CN    200710030294.2 18.09.2007    (74) Representative   
(84)    Designated State           
    KE   T Z   ZM    ZW        HUSSEIN RANCHHOD & CO   
(51)    International    Classification    C07H 3/06 (2006.01)    C07H 1/00 (2006.01)   
(54)    Title
Method for preparing main hydrolysate by hydrolizing plant cellulose materials with concentrated sulfuric acid
(57)    Abstract

The present invention relates to a method to dispose plant cellulose materials,
in particular to a method for preparing a main hydrolysate by hydrolyzing the plant cellulose materials with concentrated sulfuric acid. The plant cellulose materials are mixed with sulfuric acid in batches, and the main hydrolysate is obtained after hydrolysis. The batch mixing includes the following procedures:

(1)sulfuric acid solution is used to dissolve part of the plant cellulose materials

thereby forming a hydrolysate; (2)when the plant cellulose materials can not be dissolved any more, concentrated sulfuric acid with the concentration more

than 80 wt% is successively added into the hydrolysate, and another part of the plant cellulose materials are added; (3)and then the procedure as step


(56)    Documents Cited :    CN 101161666 A    CN 101157445 A    WO 9640970 A1    WO 2005078140 A1


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