Steam explosion method for improving tobacco stalk quality by using carbon dioxide as exogenous gas

[0028] (1) before the blasting of the tobacco stems, carry out the treatment of moistening the stems, let the tobacco stems soften naturally for 30 minutes, and control the moisture content at 30%;

[0029] (2) The moistened and softened tobacco stems are packed into the explosion cavity, and the filling amount is 2 / 3 of the volume of the explosion cavity;

[0030] (3) After sealing the upper cover of the explosion chamber, introduce CO 2 Exogenous gas, CO 2 After switching on, the pressure holding time is 20 seconds, and the CO is controlled 2 The inlet pressure is 0.4MPa; the CO is closed 2 After the intake valve, open the steam valve to introduce saturated water vapor;

[0031] (4) Close the steam valve after keeping the steam feeding time for 60 seconds, the saturated steam pressure is 0.6MPa, and blast the material;

[0032] (5) The explosive product is entered into the fluidized bed process for dehydration and drying, and the moisture content is reduced to about 30%;

[0035] (1) before the blasting of the tobacco stems, carry out the treatment of moistening the stems, and let the tobacco stems soften naturally for 30 minutes in the air, so that the moisture content is controlled at 35%;

[0036] (2) The moistened and softened tobacco stems are packed into the explosion cavity, and the filling amount is 2 / 3 of the volume of the explosion cavity;

[0037] (3) After sealing the upper cover of the explosion chamber, introduce CO 2 Exogenous gas, CO 2 After switching on, the pressure holding time is 20 seconds, and the CO is controlled 2 The inlet pressure is 0.5MPa; the CO is closed 2 After the intake valve, open the steam valve to introduce saturated water vapor;

[0038] (4) Close the steam valve after keeping the steam feeding time for 60 seconds, the saturated steam pressure is 0.8MPa, and blast the material;

[0039] (5) Carry out the explosion product into the fluidized bed process to carry out sequence dehydration and drying, and the

[0042] (1) before the blasting of the tobacco stems, carry out the treatment of moistening the stems, let the tobacco stems soften naturally for 30 minutes, and control the moisture content at 40%;

[0043] (2) The moistened and softened tobacco stems are packed into the explosion cavity, and the filling amount is 2 / 3 of the volume of the explosion cavity;

[0044] (3) After sealing the upper cover of the explosion chamber, introduce CO 2 Exogenous gas, CO 2 After switching on, the pressure holding time is 20 seconds, and the CO is controlled 2 The inlet pressure is 0.6MPa; the CO is closed 2 After the intake valve, open the steam valve to introduce saturated water vapor;

[0045] (4) Close the steam valve after keeping the steam feeding time for 60 seconds, the saturated steam pressure is 1.0MPa, and blast the material;

[0046] (5) Carry out the explosion product into the fluidized bed process to carry out sequence dehydration and drying, and the moisture content is reduc