Coffee slag valuable component separation and recovery method and application

[0027] Example 1

[0028] The present embodiment provides a method for separating and recovering valuable components of coffee grounds, which mainly includes:

[0029] Wash and dry coffee grounds. The dried coffee grounds are placed in a pyrolysis activation device, and under the condition of a pyrolysis pressure of -0.02Mpa, the temperature is raised to 190 ° C, so that the coffee grounds are pyrolyzed at this temperature, and the constant temperature is pyrolyzed for 20 minutes. secondary pyrolysis products.

[0030] After the first pyrolysis, the second and third pyrolysis were carried out.

[0031] Under the condition that the pyrolysis pressure is -0.01Mpa, the temperature is continued to be raised to 290° C., constant temperature pyrolysis is performed for 20 minutes, and the second pyrolysis product is separated and recovered. After the recovery, under the condition that the pyrolysis pressure is -0.01MPa, the temperature is continued to be raised to 390° C., constant t

[0033] Example 2

[0034] The present embodiment provides a method for separating and recovering valuable components of coffee grounds, which mainly includes:

[0035] Wash and dry coffee grounds. The dried coffee grounds are placed in a pyrolysis activation device, and under the condition of a pyrolysis pressure of -0.09Mpa, the temperature is raised to 210 ° C, so that the coffee grounds are pyrolyzed at this temperature, and the constant temperature is pyrolyzed for 40 minutes. secondary pyrolysis products.

[0036] After the first pyrolysis, the second and third pyrolysis were carried out.

[0037] Under the condition that the pyrolysis pressure is -0.09Mpa, the temperature is continued to be raised to 310°C, constant temperature pyrolysis is carried out for 40min, and the second pyrolysis product is separated and recovered. After the recovery, under the condition that the pyrolysis pressure is -0.09Mpa, the temperature is continued to be raised to 410° C., constant temper

[0039] Example 3

[0040] The present embodiment provides a method for separating and recovering valuable components of coffee grounds, which mainly includes:

[0041] Wash and dry coffee grounds. The dried coffee grounds are placed in a pyrolysis activation device, and under the condition of a pyrolysis pressure of -0.07Mpa, the temperature is raised to 205 ° C, so that the coffee grounds are pyrolyzed at this temperature, and the constant temperature is pyrolyzed for 35 minutes. secondary pyrolysis products.

[0042] After the first pyrolysis, the second and third pyrolysis were carried out.

[0043] Under the condition of the pyrolysis pressure of -0.08Mpa, the temperature was continued to rise to 305°C, and the thermolysis was performed at a constant temperature for 35min, and the second pyrolysis product was separated and recovered. After the recovery, under the condition that the pyrolysis pressure is -0.08Mpa, the temperature is continued to be raised to 405° C., constant