High temperature bio-char carbonization and micron grinding and classification for inclusion into master batch polymerization
First Claim
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1. A process for creating a mixture of micron-sized charred hemp comprising:
- rough cutting a portion of hemp stalk, said portion of hemp stalk comprising fiber and hurd materials;
charring the portion of hemp stalk at a temperature of greater than 1100°
Celsius to create a char material;
milling the char material to create a milled char;
classifying the milled char with a classification system of less than 10 micron size to create a fraction of hemp char particles;
collecting a desired fraction from the classification system of hemp char particles of less than 10 microns in size.
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Abstract
A thermal process for carbonizing hemp and reducing particle size, mechanically, by grinding or milling said carbonized hemp materials to generate a precise particle size hemp char and combining the hemp char particles with a polymer into a master batch.
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Citations
21 Claims
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1. A process for creating a mixture of micron-sized charred hemp comprising:
- rough cutting a portion of hemp stalk, said portion of hemp stalk comprising fiber and hurd materials;
charring the portion of hemp stalk at a temperature of greater than 1100°
Celsius to create a char material;
milling the char material to create a milled char;
classifying the milled char with a classification system of less than 10 micron size to create a fraction of hemp char particles;
collecting a desired fraction from the classification system of hemp char particles of less than 10 microns in size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- rough cutting a portion of hemp stalk, said portion of hemp stalk comprising fiber and hurd materials;
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9. A process for creating a masterbatch comprising a plurality of hemp char particles and a polymer comprising:
- carbonizing a portion of a hemp material in a furnace, said portion of hemp material comprising hemp fiber and hurd, said furnace being flushed with nitrogen and then heated to greater than 1100°
C.;
wherein the temperature greater than 1100°
C. is held for at least 60 minutes;
nitrogen flow is maintained over the at least 60 minutes to maintain a low oxygen environment to create a char;
removing the char from the furnace and allowing it to cool;
milling the char by a milling process for a period sufficient to reduce the char into a plurality of particles having average particle size of less than 2 microns to create char particles of less than 2 microns;
combining the char particles having an average particle size of less than 2 microns with the polymer, wherein the ratio of char particles to polymer is between 10;
90 and 50;
50; and
mixing the polymer and the char particles to form the masterbatch. - View Dependent Claims (10, 11, 12, 13, 14, 15)
- carbonizing a portion of a hemp material in a furnace, said portion of hemp material comprising hemp fiber and hurd, said furnace being flushed with nitrogen and then heated to greater than 1100°
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16. A process of forming charred hemp particles of less than 2 micron in size, comprising:
- drying cut hemp stalk on a field for a period of less than 7 days, said hemp stalk comprising fiber and hurd;
pyrolyzing the dried hemp stalk at 1100°
-1500°
Celsius to create a char;
adding the char to a grinding vessel and grinding the char for a period of 1 to 16 hours;
screening the ground char with a 2 micron screen to create a screened char of less than 2 microns; and
capturing the screened char of less than 2 microns. - View Dependent Claims (17, 18, 19, 20, 21)
- drying cut hemp stalk on a field for a period of less than 7 days, said hemp stalk comprising fiber and hurd;
Specification