Integrated two-phase anaerobic dry fermentation reactor based on biomimetic principle of rumen

Patent metadata

Field	Value
Publication number	US-11618871-B2
Application number	US-201816632352-A
Country	US
Kind code	B2
Filing date	May 18, 2018
Priority date	Feb 5, 2018
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

An integrated two-phase anaerobic dry fermentation reactor based on a biomimetic principle of rumen includes a reactor body; wherein the reactor body includes a dry fermentation chamber, a secondary fermentation chamber, and a liquid storage chamber. The dry fermentation chamber is arranged at an upper portion of the reactor body. The liquid storage chamber is arranged at a bottom of the reactor body. The secondary fermentation chamber is arranged between the dry fermentation chamber and the liquid storage chamber in the reactor body. The dry fermentation chamber is connected to the secondary fermentation chamber by a porous structure.

First claim

What is claimed is:

1. An integrated two-phase anaerobic dry fermentation reactor, comprising: a reactor body; wherein the reactor body comprises a dry fermentation chamber, a secondary fermentation chamber, and a liquid storage chamber, wherein the dry fermentation chamber is arranged at an upper portion of the reactor body; the liquid storage chamber is arranged at a bottom of the reactor body; the secondary fermentation chamber is arranged between the dry fermentation chamber and the liquid storage chamber in the reactor body; and a bottom of the dry fermentation chamber is connected to the secondary fermentation chamber by a porous structure.

2. The integrated two-phase anaerobic dry fermentation reactor according to claim 1 , further comprising: a gas collection device, a stirring system, a pH monitoring system, a temperature control system, a thermal insulation device, a biogas slurry storage tank, a biogas slurry backflow spraying device, and a biogas residue storage tank.

3. The integrated two-phase anaerobic dry fermentation reactor according to claim 2 , wherein the gas collection device is connected to the dry fermentation chamber through a biogas outlet; the stirring system is installed in a middle portion of a head cover of the reactor body; the pH monitoring system is placed into the dry fermentation chamber through the head cover of the reactor body; the temperature control system measures a temperature in the dry fermentation chamber through a temperature measuring hole, and the thermal insulation device adjusts the temperature in the dry fermentation chamber in real time through a feedback of the temperature control system; the biogas slurry storage tank is connected to a biogas slurry outlet; the biogas slurry backflow spraying device is connected to the biogas slurry storage tank through a biogas slurry inlet; the biogas residue storage tank is respectively connected to a discharge port at a side wall of an upper portion of the dry fermentation chamber and the biogas residue outlet at a side wall of a bottom of the secondary fermentation chamber; and the integrated two-phase anaerobic dry fermentation reactor is designed and operated based on a biomimetic principle of a rumen.

4. The integrated two-phase anaerobic dry fermentation reactor according to claim 3 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

5. The integrated two-phase anaerobic dry fermentation reactor according to claim 2 , wherein the stirring system comprises a double-bladed stirrer and a motor; and the biogas slurry backflow spraying device comprises a biogas slurry feeding pump, a biogas slurry pipeline and a spraying device.

6. The integrated two-phase anaerobic dry fermentation reactor according to claim 2 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

7. The integrated two-phase anaerobic dry fermentation reactor according to claim 1 , wherein a head cover arranged on a top of the dry fermentation chamber is provided with a biogas outlet, a temperature measuring hole, a pH measuring hole and a plurality of biogas slurry inlets; a side wall of a lower portion of the dry fermentation chamber is provided with a feed port, and a side wall of an upper portion of the dry fermentation chamber is provided with a discharge port; and a side wall of a bottom of the liquid storage chamber is provided with a biogas slurry outlet.

8. The integrated two-phase anaerobic dry fermentation reactor according to claim 7 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

9. The integrated two-phase anaerobic dry fermentation reactor according to claim 1 , wherein a bottom of the secondary fermentation chamber is provided with a porous plate having a tilted angle.

10. The integrated two-phase anaerobic dry fermentation reactor according to claim 9 , wherein the tilted angle of the porous plate is less than or equal to 15°.

11. The integrated two-phase anaerobic dry fermentation reactor according to claim 10 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

12. The integrated two-phase anaerobic dry fermentation reactor according to claim 9 , wherein the porous plate is covered with an ultrafiltration membrane.

13. The integrated two-phase anaerobic dry fermentation reactor according to claim 12 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

14. The integrated two-phase anaerobic dry fermentation reactor according to claim 9 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

15. The integrated two-phase anaerobic dry fermentation reactor according to claim 1 , wherein the porous structure is a porous plate structure, and the porous structure is covered with a flexible filter mesh with a hole size of not more than 2 mm.

Assignees

• Chinese Res Acad Env Sciences

Inventors

• Zheng Mingxia
• Su Jing
• Xi Beidou
• Hao Xin
• Sun Yuanyuan
• Lin Mao
• Li Juan

Classifications

• C12M27/02

  Stirrer or mobile mixing elements · CPC title

• C02F2209/06

  pH · CPC title

• C02F2209/02

  Temperature · CPC title

• C12M33/14

  with filters, sieves or membranes · CPC title

• C12M23/36

  Means for collection or storage of gas; Gas holders · CPC title