Process and apparatus for recycling coated paper products
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21B-001/08
D21B-001/32
D21C-005/02
출원번호
US-0266868
(2010-04-30)
등록번호
US-8715462
(2014-05-06)
국제출원번호
PCT/CA2010/000646
(2010-04-30)
§371/§102 date
20111028
(20111028)
국제공개번호
WO2010/124380
(2010-11-04)
발명자
/ 주소
Mackintosh, Alexis Fosse
출원인 / 주소
Mackintosh, Alexis Fosse
대리인 / 주소
Oyen Wiggs Green & Mutala LLP
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HM
Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HMF are produced. The methods involve heat treatment at relatively mild temperatures and pressures under acidic conditions.
대표청구항▼
1. A method of recycling coated paper products, comprising: breaking-up and de-watering the coated paper products to produce a pulp;heating the pulp in a basic solution to produce a mixture comprising de-coated pulp and coating fines;neutralizing the mixture comprising de-coated pulp and coating fin
1. A method of recycling coated paper products, comprising: breaking-up and de-watering the coated paper products to produce a pulp;heating the pulp in a basic solution to produce a mixture comprising de-coated pulp and coating fines;neutralizing the mixture comprising de-coated pulp and coating fines with a weak acid;heating the mixture in an acidic solution to produce residual solids and a solution of useable chemicals in acid;separating the residual solids, useable chemicals and acid gas. 2. The method of claim 1, further comprising cooling, de-watering and washing the mixture comprising de-coated pulp and coating fines. 3. The method of claim 1, further comprising de-watering, washing and re-wetting the mixture comprising de-coated pulp and coating fines. 4. The method of claim 1, wherein the useable chemicals comprise one or more sugars and one or more organic compounds. 5. The method of claim 4, wherein the one or more sugars comprise glucose. 6. The method of claim 4, wherein the one or more organic compounds comprises organic compounds selected from the group consisting of levulinic acid, 5-hydroxymethyl furfural, formic acid, and a combination of these. 7. The method of claim 5, further comprising fermenting the glucose to yield ethanol. 8. The method of claim 1, wherein the basic solution comprises hydroxide solution. 9. The method according to claim 1, wherein the acidic solution comprises an inorganic acid. 10. The method according to claim 9, wherein the inorganic acid comprises an acid selected from the group consisting of sulphuric, hydrochloric, hydrobromic, nitric and phosphoric acids and combinations thereof. 11. The method according to claims 1, further comprising drying the residual solids for use as a fuel. 12. The method according to claim 11, further comprising pelletizing the residual solids. 13. The method according to claim 11, wherein the residual solids have an energy density of at least 20 GJ/Tonne. 14. The method according to claim 11, further comprising mixing the residual solids with fuel particles and pelletizing the mixed residual solids and fuel particles. 15. The method according to claim 14, wherein the fuel particles comprise coal fines. 16. The method according to claim 11, further comprising mixing the residual solids with coal to provide a blended fuel having an average sulfur content lower than that of the coal. 17. A method of recycling coated paper products, comprising: breaking-up and de-watering the coated paper products to produce a pulp;heating the pulp in a basic solution to produce a mixture comprising de-coated pulp and coating fines;heating the mixture in an acidic solution to produce residual solids and a solution of useable chemicals in acid;separating the residual solids, useable chemicals and acid,wherein the acidic solution comprises an organic acid. 18. The method according to claim 17, wherein the organic acid comprises an acid selected from the group consisting of carbonic, acetic, formic, maleic, malic, malonic, oxalic acids and mixtures of one or more thereof. 19. The method according to claim 17, wherein the organic acid comprises an acid having a pKa in the range of 1.5 to 3.85. 20. The method according to claim 17, further comprising cooling, de-watering and washing the mixture comprising decoated pulp and coatings fines. 21. The method according to claim 17, further comprising neutralizing the mixture comprising decoated pulp and coating fines with a weak acid gas. 22. The method according to claim 17, further comprising de-watering, washing and re-wetting the mixture comprising de-coated pulp and coating fines. 23. The method according to claim 17, further comprising drying the residual solids for use as a fuel. 24. The method according to claim 23, further comprising mixing the residual solids with fuel particles and pelletizing the mixed residual solids and fuel particles. 25. The method according to claim 23, further comprising mixing the residual solids with coal to provide a blended fuel having an average sulfur content lower than that of the coal.
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이 특허에 인용된 특허 (20)
Beningson Robert M. (Stamford CT) Beningson Herbert E. (Stamford CT) Menon Narayanankutty V. P. (Jamaica NY) Nadkarni Ravindra M. (Arlington MA) Lamb Thomas J. (Lexington MA) Fox Lee K. (Waltham MA) , Apparatus for disposal of solid wastes and recovery of fuel product therefrom.
Andersson D. Bertil (Skovde SEX) Juhlin Nils J. W. (Skovde SEX) Gillenium Claes I. (Skovde SEX) Kjell-Berger Olle (Valdemarsvik SEX) Brinck Owe R. (Hassleholm SEX), Coke briquettes.
Tsao George T. (West Lafayette IN) Ladisch Michael R. (West Lafayette IN) Ladisch Christine M. (West Lafayette IN) Hsu Teh-An (Honolulu HI), Process for treating cellulosic materials and obtaining glucose therefrom.
Benson Peter H. (12115 87th Ave. Palos Park IL 60464) Wickersham William S. (150 E. Northwest Hwy. ; Ste. H Des Plaines IL 60016-2259), Solid fuel and process for combustion of the solid fuel.
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