Residue degradation device for capturing carbon dioxide

Abstract

The utility model discloses a residue degradation device for capturing carbon dioxide, which belongs to the technical field of residue degradation devices and comprises a residue degradation component, a waste gas drying and cooling component, a waste gas separation component and a waste gas recycling component. The residues are degraded in the degradation tank, and nutrient substances generated by degradation are discharged from the discharge end and used as feed for livestock; waste generated by degradation is discharged from a waste outlet end and is used as farmland waste; waste gas generated by degradation enters a pressure swing adsorption tower after being dewatered and dried, and oxygen is supplemented for degradation of residues in a degradation tank; the carbon dioxide is concentrated in the compressor for subsequent recycling; through the mode, carbon dioxide in the waste gas is recycled, oxygen in the waste gas is purified and conveyed back to the degradation tank for residue decomposition, and maximum resource utilization is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of residue degradation devices, in particular to a residue degradation device for capturing carbon dioxide. Background Art

[0002] my country's food industry produces a huge amount of plant residues every year, such as bean dregs, coffee grounds, beer dregs, etc. These residues still contain rich nutrients such as sugar, fat, minerals and essential amino acids. Due to the high water content in the residues, they are generally degraded in an open environment through composting.

[0003] For example, Chinese patent CN220618923U discloses a bio-fermentation tank that facilitates solid-liquid separation, which is used to solve the technical problem of incomplete solid-liquid separation in existing bio-fermentation tanks, resulting in waste of resources. The invention comprises a tank body, a feed valve fixed to the upper end of the tank body, a stirring shaft rotatably provided on the upper surface of the tank body, a drive motor for driving the stirring shaft to rotate mounted on the upper surface of the tank body, a stirring blade fixed to the stirring shaft, a plurality of pillars fixed to the lower end of the tank body, a filter assembly provided on the lower surface of the tank body, and two symmetrically distributed fixing assemblies provided on the lower surface of the tank body, the fixing assemblies including a tray having a placement slot, a plurality of hydraulic rods provided in the placement slot, and a squeeze circular plate fixed to the hydraulic rods.

[0004] However, the process of degrading plant residues through the above patent will produce a large amount of carbon dioxide, which will cause the greenhouse effect to be aggravated when discharged into the air. In addition, carbon dioxide can be used in chemical production, and discharging it into the air will cause a waste of resources.

[0005] Based on this, the utility model designs a residue degradation device for capturing carbon dioxide to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a residue degradation device for capturing carbon dioxide.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A residue degradation device for capturing carbon dioxide comprises a residue degradation component, a waste gas drying and cooling component, a waste gas separation component and a waste gas recycling component; the residue degradation component is connected to the waste gas drying and cooling component, the waste gas drying and cooling component is connected to the waste gas separation component, the waste gas separation component is connected to the waste gas recycling component, and the waste gas recycling component is connected to the residue degradation component.

[0009] Furthermore, the residue degradation component is a degradation tank, the top of the degradation tank is provided with a feed end for feeding residue, the upper end of the degradation tank is provided with an exhaust gas outlet for discharging exhaust gas, the bottom of the degradation tank is provided with a waste outlet for discharging waste, the lower end of the degradation tank is provided with a discharge end for discharging nutrients generated by degradation, and the middle of the degradation tank is provided with an air inlet end for introducing oxygen.

[0010] Furthermore, the waste gas drying and cooling component includes a fan and a cooler; the waste gas outlet of the degradation tank is connected to the air inlet of the fan through a pipe, and the air outlet of the fan is connected to the cooler; the lower end of the cooler is provided with an air inlet for introducing waste gas, the lower end of the cooler is provided with a liquid outlet for discharging cooled liquefied water in the waste gas, and the upper end of the cooler is provided with an air outlet for discharging cooled waste gas.

[0011] Furthermore, the liquid outlet of the cooler is fixedly connected to a water quality detector.

[0012] Furthermore, a gas flow sensor is fixedly connected to the gas outlet end of the cooler and the gas inlet end of the degradation tank.

[0013] Furthermore, the exhaust gas separation component is a pressure swing adsorption tower, and the gas outlet end of the cooler is connected to a pressure swing adsorption tower for adsorbing carbon dioxide in the exhaust gas.

[0014] Furthermore, the waste gas recycling component is a compressor, and the compressor is provided with an outlet for discharging compressed carbon dioxide gas.

[0015] Furthermore, one of the gas outlet ends of the pressure swing adsorption tower is connected to the gas inlet end of the degradation tank, and the other gas outlet end of the pressure swing adsorption tower is connected to a compressor for compressing and increasing the concentration of carbon dioxide.

[0016] Compared with the prior art, the utility model has the following beneficial effects: when the residue is put into the degradation tank, oxygen enters the degradation tank through the air inlet end, and under the action of oxygen, the residue is degraded in the degradation tank, and the nutrients generated by degradation are discharged from the discharge end and used as livestock feed; the waste generated by degradation is discharged from the waste discharge end and used as farmland waste; the waste gas generated by degradation is discharged from the waste gas discharge end, and the waste gas is sent to the cooler through the fan, the waste gas is cooled in the cooler, the water vapor in the waste gas is cooled and liquefied and discharged from the liquid discharge end, the cooled waste gas is discharged from the gas discharge end and passed into the pressure swing adsorption tower, and the waste gas after dehydration and drying enters the pressure swing adsorption tower Adsorption tower. In the pressure swing adsorption tower, carbon dioxide and nitrogen in the air are adsorbed by the molecular sieve, and oxygen is enriched in the gas phase and discharged from one of the outlet ports of the pressure swing adsorption tower to the inlet port of the degradation tank to supplement oxygen for the degradation of the residue in the degradation tank. When the molecular sieve is saturated with adsorption, the carbon dioxide is desorbed by reducing the pressure and discharged from the other outlet port of the pressure swing adsorption tower to the compressor. The compressor concentrates the carbon dioxide for subsequent recycling. In this way, not only the carbon dioxide in the waste gas is recycled, but also the oxygen in the waste gas is purified and transported back to the degradation tank to supply the decomposition of the residue, thereby maximizing resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0018] Figure 1 This is a flow chart of a residue degradation device for capturing carbon dioxide according to the utility model.

[0019] The numbers in the figure represent:

[0020] 1. Degradation tank; 2. Fan; 3. Cooler; 4. Pressure swing adsorption tower; 5. Compressor. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] Example 1: In some embodiments, please refer to the accompanying drawings of the specification. Figure 1 A residue degradation device for capturing carbon dioxide comprises a residue degradation component, a waste gas drying and cooling component, a waste gas separation component and a waste gas recycling component; the residue degradation component is connected to the waste gas drying and cooling component, the waste gas drying and cooling component is connected to the waste gas separation component, the waste gas separation component is connected to the waste gas recycling component, and the waste gas recycling component is connected to the residue degradation component;

[0023] The residue degradation component is a degradation tank 1, the top of the degradation tank 1 is provided with a feed end for feeding residue, the upper end of the degradation tank 1 is provided with an exhaust gas outlet for discharging exhaust gas, the bottom of the degradation tank 1 is provided with a waste outlet for discharging waste, the lower end of the degradation tank 1 is provided with a discharge end for discharging nutrients generated by degradation, and the middle of the degradation tank 1 is provided with an air inlet for introducing oxygen;

[0024] The exhaust gas drying and cooling assembly includes a fan 2 and a cooler 3; the exhaust gas outlet of the degradation tank 1 is connected to the air inlet of the fan 2 through a pipeline, and the air outlet of the fan 2 is connected to the cooler 3; the lower end of the cooler 3 is provided with an air inlet for introducing the exhaust gas, the lower end of the cooler 3 is provided with a liquid outlet for discharging the cooled liquefied water in the exhaust gas, and the upper end of the cooler 3 is provided with an air outlet for discharging the cooled exhaust gas;

[0025] The liquid outlet of the cooler 3 is fixedly connected to a water quality detector; when the waste liquid index is qualified, it can be directly discharged;

[0026] The outlet end of the cooler 3 and the inlet end of the degradation tank 1 are fixedly connected with a gas flow sensor; in order to control the degradation oxygen concentration and find the oxygen content required when the degradation activity is maximum, that is, when the exhaust gas is generated fastest;

[0027] The exhaust gas separation component is a pressure swing adsorption tower 4. The outlet end of the cooler 3 is connected to the pressure swing adsorption tower 4 for adsorbing carbon dioxide in the exhaust gas. One of the outlet ends of the pressure swing adsorption tower 4 is connected to the inlet end of the degradation tank 1.

[0028] The waste gas recycling component is a compressor 5. The other outlet end of the pressure swing adsorption tower 4 is connected to a compressor 5 for compressing and increasing the concentration of carbon dioxide. The compressor 5 is provided with an outlet end for discharging the compressed carbon dioxide gas.

[0029] When the residue is put into the degradation tank 1, oxygen enters the degradation tank 1 through the air inlet. Under the action of oxygen, the residue is degraded in the degradation tank 1, and the nutrients generated by degradation are discharged from the discharge end and used as livestock feed; the waste generated by degradation is discharged from the waste discharge end and used as farmland waste; the waste gas generated by degradation is discharged from the waste gas discharge end, and the waste gas is sent to the cooler 3 through the fan 2. The waste gas is cooled in the cooler 3, and the water vapor in the waste gas is cooled and liquefied and discharged from the liquid discharge end. The cooled waste gas is discharged from the gas discharge end and passed into the pressure swing adsorption tower 4. The waste gas after dehydration and drying enters the pressure swing adsorption tower 4. In the pressure swing adsorption tower 4, Carbon dioxide and nitrogen in the air are adsorbed by the molecular sieve, while oxygen is enriched in the gas phase and discharged from one of the outlet ports of the pressure swing adsorption tower 4 to the inlet port of the degradation tank 1, thereby replenishing oxygen for the degradation of the residue in the degradation tank 1. When the molecular sieve is saturated with adsorption, the carbon dioxide is desorbed by reducing the pressure and discharged from the other outlet port of the pressure swing adsorption tower 4 to the compressor 5. The compressor 5 concentrates the carbon dioxide for subsequent recycling. In this way, not only the carbon dioxide in the waste gas is recycled, but also the oxygen in the waste gas is purified and transported back to the degradation tank 1 to supply the decomposition of the residue, thereby maximizing resource utilization.

[0030] The water quality detector was purchased from Qingdao Mingcheng Environmental Protection Technology Co., Ltd., a mature product currently available on the market;

[0031] The gas flow sensor is purchased from Shanghai Yijie Automation Technology Co., Ltd. and is a mature product currently available on the market.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A residue degradation device for capturing carbon dioxide, characterized by: It includes a residue degradation component, a waste gas drying and cooling component, a waste gas separation component and a waste gas recycling component; the residue degradation component is connected to the waste gas drying and cooling component, the waste gas drying and cooling component is connected to the waste gas separation component, the waste gas separation component is connected to the waste gas recycling component, and the waste gas recycling component is connected to the residue degradation component.

2. The device for degrading residues for capturing carbon dioxide according to claim 1, characterized in that: The residue degradation component is a degradation tank (1), the top of the degradation tank (1) is provided with a feed end for feeding residue, the upper end of the degradation tank (1) is provided with a waste gas outlet end for discharging waste gas, the bottom of the degradation tank (1) is provided with a waste material outlet end for discharging waste, the lower end of the degradation tank (1) is provided with a discharge end for discharging nutrients generated by degradation, and the middle of the degradation tank (1) is provided with an air inlet end for introducing oxygen.

3. The device for degrading residues for capturing carbon dioxide according to claim 2, characterized in that: The waste gas drying and cooling component comprises a fan (2) and a cooler (3); the waste gas outlet of the degradation tank (1) is connected to the air inlet of the fan (2) through a pipeline, and the air outlet of the fan (2) is connected to the cooler (3); the lower end of the cooler (3) is provided with an air inlet for introducing waste gas, the lower end of the cooler (3) is provided with a liquid outlet for discharging water cooled and liquefied in the waste gas, and the upper end of the cooler (3) is provided with an air outlet for discharging the cooled waste gas.

4. The device for degrading residues for capturing carbon dioxide according to claim 3, characterized in that: The liquid outlet end of the cooler (3) is fixedly connected to a water quality detector.

5. The device for degrading residues for capturing carbon dioxide according to claim 3, characterized in that: A gas flow sensor is fixedly connected to the gas outlet end of the cooler (3) and the gas inlet end of the degradation tank (1).

6. The device for degrading residues for capturing carbon dioxide according to claim 3, characterized in that: The waste gas separation component is a pressure swing adsorption tower (4), and the gas outlet end of the cooler (3) is connected to the pressure swing adsorption tower (4) for adsorbing carbon dioxide in the waste gas.

7. The device for degrading residues for capturing carbon dioxide according to claim 6, characterized in that: The waste gas recycling component is a compressor (5), and the compressor (5) is provided with an outlet for discharging compressed carbon dioxide gas.

8. The device for degrading residues for capturing carbon dioxide according to claim 7, characterized in that: One of the gas outlet ends of the pressure swing adsorption tower (4) is communicated with the gas inlet end of the degradation tank (1), and the other gas outlet end of the pressure swing adsorption tower (4) is connected to a compressor (5) for compressing and increasing the concentration of carbon dioxide.

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