Strain protection device for biogas biological desulfurization system

Abstract

The utility model discloses a strain protection device for a biogas biological desulfurization system, which comprises a biological desulfurization tower, a desulfurization component is arranged in the biological desulfurization tower, a gas inlet pipeline is arranged at the lower end of the biological desulfurization tower, and an independent strain protection component is arranged at the upper end of the biological desulfurization tower. A desulfurization branch pipe is arranged on the gas inlet pipeline and is communicated with the independent strain protection component. According to the utility model, the independent growth of desulfurization strains under the conditions of the same environment, nutrient medium and other factors is ensured to the greatest extent. In the emergency state of inactivation of the biological desulfurization equipment, the time for culturing strains again and debugging the optimal growth environment is saved, and the economic loss caused by production halt of a user due to debugging and maintenance is greatly reduced. Meanwhile, the device avoids difficulty in cleaning and replacement of traditional biological desulfurization, and reduces the process safety accident risk.

Description

TECHNICAL FIELD

[0001] The utility model relates to biological desulfurization technical field especially, a kind of strain protection device for biogas biological desulfurization system. BACKGROUND

[0002] At present, more and more engineering projects select anaerobic treatment process in sewage and garbage treatment process, and biogas as a byproduct is gradually known and utilized by us. However, the biogas coming out of the anaerobic tank contains high concentration of H2S and other impurities, and if the biogas is not desulfurized and purified, it will corrode the biogas conveying pipeline, storage equipment and subsequent use equipment, reduce the service life, and bring safety hazards. In order to ensure the safety of system equipment, improve the service life of equipment, and meet the environmental protection requirements, it is necessary to add desulfurization equipment in the biogas system to remove hydrogen sulfide which has adverse effects on subsequent processes and equipment. Therefore, the biogas is usually utilized after desulfurization and purification.

[0003] Biological desulfurization refers to a technology of using bacteria or other microorganisms to degrade sulfur-containing compounds. A certain amount of air is introduced into the biogas containing H2S, and the mixed gas passes through the biological desulfurization tower to remove H2S. The circulation of nutrient solution keeps the filler in a wet state and supplements the nutrients required for the growth and reproduction of desulfurization bacteria. In this case, they absorb H2S from the mixed biogas and convert them into elemental sulfur, which is further converted into sulfuric acid. The generated sulfuric acid is discharged from the system together with the nutrient solution under the buffering and neutralizing action of the nutrient solution, and the process is repeated. The efficiency of hydrogen sulfide removal depends on the concentration of hydrogen sulfide in the entering gas, and the efficiency can reach 98%.

[0004] However, in the face of improper operation or special circumstances, the bacteria in the tower body may be inactivated, resulting in the collapse of the entire biological desulfurization system. Although the existing biological desulfurization device runs smoothly after debugging, it is more troublesome to replace the filler and debug after cleaning or bacteria inactivation. Users also have a production stoppage time of about 20 days, which affects the economic benefits of the factory. At the same time, the tower body is also faced with safety risks when disassembled and cleaned. UTILITY MODEL CONTENTS

[0005] Therefore, in order to replace the traditional biological desulfurization tower and ensure that the desulfurization system can be quickly and efficiently reactivated after bacteria inactivation, the utility model provides a strain protection device for biogas biological desulfurization system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a kind of bacteria protection device for biogas biological desulfurization system, including biological desulfurization tower, which is provided with desulfurization component in the biological desulfurization tower, the lower end of the biological desulfurization tower is provided with air inlet pipe, and the upper end of the biological desulfurization tower is provided with independent bacteria protection component, and the air inlet pipe is provided with desulfurization branch pipe connected with independent bacteria protection component.

[0008] As a further improvement of the above technical solution:

[0009] Preferably, the independent bacteria protection component includes bacteria barrel, inverted V-shaped air inlet cylinder arranged on the upper end of the bacteria barrel and connected with the desulfurization branch pipe, nutrient agent adding pipe arranged on the upper end of the bacteria barrel, overflow and exhaust pipe arranged on the side of the bacteria barrel.

[0010] Preferably, the bacteria barrel is provided with a plurality of pores filled with filler.

[0011] Preferably, the bacteria barrel is further provided with a reflux pipe, and the two ends of the reflux pipe are connected with the bacteria barrel and the outer wall of the biological desulfurization tower, respectively.

[0012] Preferably, the desulfurization component includes spray pipe arranged in the upper part of the biological desulfurization tower, acid water pipe connected with the spray pipe and connected with external acid water inlet, gas collection pipe arranged in the interior of the biological desulfurization tower and located below the spray pipe, and gas outlet pipe connected with the gas collection pipe and connected with the outside.

[0013] Preferably, the gas collection pipe is provided with two symmetrical gas inlets.

[0014] Preferably, the upper end of the biological desulfurization tower is provided with a flushing pipe.

[0015] Preferably, the lower end of the biological desulfurization tower is provided with a drain.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The utility model guarantees the independent growth of desulfurization bacteria to the greatest extent under the same environment, nutrient medium and other factors. In the emergency state of biological desulfurization equipment inactivation, the time for re-culturing bacteria and debugging optimal growth environment is saved, and the economic loss caused by debugging and maintenance is greatly reduced. At the same time, the device avoids the difficulty of traditional biological desulfurization cleaning and replacement, and reduces the risk of process safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2The whole contains the upper half portion structure schematic diagram of the strain barrel.

[0020] In the figure: 1, biological desulfurization tower; 2, air inlet pipeline; 3, desulfurization branch pipe; 4, strain barrel; 5, inverted V-shaped air inlet cylinder; 6, nutrient medicament adding pipeline; 7, overflow and exhaust pipeline; 8, reflux pipeline; 9, spraying pipeline; 10, acid water pipeline; 11, gas collecting pipeline; 12, air outlet pipeline; 13, gas collecting port; 14, flushing pipeline; 15, drain. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0022] In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more than two; the directions or position relations indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting or implying that the indicated devices or elements must have a particular direction, be constructed in a particular direction and be operated, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The technical scheme is shown in the accompanying Figure 1 and the accompanying Figure 2 The main body of the technical scheme is a biological desulfurization tower 1.

[0025] On the outside of the biological desulfurization tower 1: an air inlet pipeline 2 is arranged on the left side of the outer wall of the biological desulfurization tower 1, a corresponding air outlet pipeline 12 is arranged on the right side, an acid water pipeline 10 is further arranged on the side, a flushing pipeline 14 is arranged on the upper end of the biological desulfurization tower 1, and a drain 15 is arranged on the lower end of the biological desulfurization tower 1.

[0026] Inside the biological desulfurization tower 1: the acid water pipeline 10 is communicated with the spray pipeline 9 at the upper end of the biological desulfurization tower 1, the gas outlet pipeline 12 is communicated with the gas collecting pipeline 11, and the gas collecting pipeline 11 is provided with two symmetrical gas collecting openings 13 below the spray pipeline 9;

[0027] Meanwhile, the strain barrel 4 is fixedly arranged above the spray pipeline 9, the strain barrel 4 is provided with a reverse V-shaped air inlet cylinder 5 at the upper end, the strain barrel 4 is further provided with a nutrient agent adding pipeline 6 at the upper end, the strain barrel 4 is provided with overflow and exhaust pipelines 7 at the side, and the desulfurization branch pipeline 3 is communicated with the air inlet pipeline 2, and the other end of the desulfurization branch pipeline 3 is communicated with the reverse V-shaped air inlet cylinder 5.

[0028] The operation process of the technical solution is as follows:

[0029] 1. Anaerobic gas enters the air inlet pipeline 2 of the biological desulfurization tower 1, wherein a part of the gas enters the strain barrel 4 (independent strain protection device) through the small pipeline desulfurization branch pipeline 3, the whole gas is purified from bottom to top, and finally collected by the double gas collecting openings 13 and then sent to other equipment through the gas outlet pipeline 12.

[0030] 2. The acid water pipeline 10 is arranged inside the equipment and communicated with the spray pipeline 9 above, and the spray nozzles on the spray pipeline 9 can uniformly spray and fully contact the strains and the auxiliary fillers in the biological desulfurization tower 1 to achieve the maximum desulfurization effect.

[0031] 3. The strain barrel 4 (independent strain protection device) at the top is a cylinder filled with pores, and the fillers inside the cylinder provide sufficient space for strain propagation. The strains independently absorb H2S in the biogas through the desulfurization branch pipeline 3, and independently provide nutrients for the strains through the nutrient agent adding pipeline 6, so that the strains start to propagate in the fillers with the help of the nutrient solution. The absorbed gas is discharged from the strain barrel 4 through the overflow and exhaust pipelines 7, and is collected by the double gas collecting openings 13 and then sent to the gas outlet pipeline 12.

[0032] 4. In special cases, when the strains in the equipment are inactivated, the air inlet pipeline 2 and the gas outlet pipeline 12 are closed, the spray flushing pipeline 14 is opened to flush tap water into the biological desulfurization tower 1, the drain opening 15 is opened, the inside of the biological desulfurization tower 1 is flushed from top to bottom, the inactivated strains and the contaminated acid water are flushed clean, the backflow pipeline 8 is opened, the strains and nutrient components are quickly backflowed into the equipment, the air inlet pipeline 2 is slightly opened, the gas is introduced into the equipment, and the nutrient solution is continuously added, so as to stimulate the strains to rapidly propagate in the equipment.

[0033] The above merely is the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the present utility model is equivalent to replace or change within the technical range disclosed by the present utility model, and should be covered in the protection scope of the present utility model.

Claims

1. A microbial strain protection device for a biogas biological desulfurization system, comprising a biological desulfurization tower (1), wherein a desulfurization component is provided inside the biological desulfurization tower (1), characterized in that: The lower end of the biological desulfurization tower (1) is provided with an air inlet pipe (2), the upper end of the biological desulfurization tower (1) is provided with an independent microbial protection component, and the air inlet pipe (2) is provided with a desulfurization branch pipe (3) connected to the independent microbial protection component.

2. The microbial strain protection device for a biogas biological desulfurization system according to claim 1, characterized in that: The independent microbial protection component includes a microbial tank (4), an inverted V-shaped air inlet (5) located at the upper end of the microbial tank (4) and connected to the desulfurization branch pipe (3), a nutrient agent addition pipe (6) located at the upper end of the microbial tank (4), and an overflow and exhaust pipe (7) located on the side of the microbial tank (4).

3. The microbial strain protection device for a biogas biological desulfurization system according to claim 2, characterized in that: The inoculum container (4) has several pores filled with filler material.

4. The microbial strain protection device for a biogas biological desulfurization system according to claim 2, characterized in that: The inoculum tank (4) is also equipped with a reflux pipe (8), and the two ends of the reflux pipe (8) are respectively connected to the inoculum tank (4) and the outer wall of the biological desulfurization tower (1).

5. The microbial strain protection device for a biogas biological desulfurization system according to claim 1, characterized in that: The desulfurization assembly includes a spray pipe (9) located above the biological desulfurization tower (1), an acid water pipe (10) connected to the spray pipe (9) and connected to an external acid water outlet, a gas collection pipe (11) located inside the biological desulfurization tower (1) and below the spray pipe (9), and an outlet pipe (12) connected to the gas collection pipe (11) and connected to the outside.

6. The microbial strain protection device for a biogas biological desulfurization system according to claim 5, characterized in that: The gas collecting pipe (11) is provided with two symmetrically arranged gas collecting ports (13).

7. The microbial strain protection device for a biogas biological desulfurization system according to claim 1, characterized in that: The biological desulfurization tower (1) is equipped with a flushing pipe (14) at its upper end.

8. The microbial strain protection device for a biogas biological desulfurization system according to claim 1, characterized in that: The lower end of the biological desulfurization tower (1) is provided with a drain outlet (15).

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