CN205556651U - Integration device and including being somebody's turn to do device for gas delivery and material mixing - Google Patents

Abstract

The utility model discloses an integrated device for gas conveying and material stirring, which comprises a rotating stirring shaft and a motor; The connection between them is sealed; the stirring part of the rotating stirring shaft is equipped with a slanted blade disc turbine agitator, and the bottom end is equipped with a microporous aeration device; the shaft wall of the rotating stirring shaft in the buffer inlet chamber is equipped A ventilation channel, the ventilation channel is arranged in communication with the microporous aeration device through the air inlet chamber provided in the rotating stirring shaft. The utility model is used to reduce the impact on microorganisms when the intake speed fluctuates by adding a buffer air intake chamber, and adopts a microporous aeration device to increase the contact area between fine air bubbles and microorganisms, and at the same time cooperates with multi-layer oblique blade disc turbine stirring The device can make the material in the bioreactor circulate downward from the center and then upward along the inner wall around the main body of the bioreactor, which strengthens the biotransformation process of the gas.

Description

An integrated device for gas delivery and material stirring and a bioreactor including the device

technical field

The utility model relates to an integrated device for gas conveying and material stirring and a bioreactor comprising the device.

Background technique

Syngas with _H2 and CO as the main components comes from a wide range of sources, including biomass pyrolysis gas, artificial gas, coke oven gas, etc. Its output is huge, and it can be used as fuel to relieve energy pressure and has a good development prospect. However, its application has the following problems: _H2 density is small, difficult to liquefy, easy to leak, difficult to store and transport; CO has biological toxicity and great safety hazard. The methanation of synthesis gas with _H2 and CO as main components into natural gas is not only easy to store, transport and use, but also improves safety, which is conducive to its popularization and application.

Syngas methanation methods mainly include chemical, physical and biological methods. Among them, the chemical method is to use high temperature and high pressure and catalysts to convert other components in the synthesis gas except methane into methane, and the physical method is to use pressure swing adsorption separation, cryogenic separation, membrane separation and other methods to purify methane in the synthesis gas. The biological method uses anaerobic fermentation microorganisms to convert H ₂ and CO into methane. Compared with chemical and physical methods, it has the advantages of low investment and operation costs, high conversion rate of H ₂ and CO, and no secondary pollution. More importantly, biological The method can simultaneously complete the methanation process of organic waste such as kitchen manure and realize the simultaneous processing of multiple raw materials, which is of great significance for the development and promotion of high-grade synthesis gas utilization technology.

Chinese patent: "A gas-liquid mixing and stirring device" (application number: 201510119968.0, application publication number CN104772083 A); it discloses a gas-liquid mixing and stirring device, which includes a frame and a frame, and the frame is fixed on On the frame, a reducer is fixedly installed on the frame, the input end of the reducer is connected with a motor, the output end is connected with a stirring shaft, the inside of the stirring shaft is hollow, the upper end of the stirring shaft is connected with an air intake pipe, and the lower end A disc turbine-type curved-blade agitator is provided, and the bottom end of the stirring shaft is located at the center of the disc-turbine-type curved-blade agitator, and an aeration hole for ventilation is opened. The main feature of this patent is that the gas is broken up and mixed with the liquid when the gas is fed in. There is no requirement for the size and degree of dispersion of the bubbles, and it cannot effectively increase the gas residence time, nor can it fully mix the reaction materials with a relatively high solid concentration. It is only applicable to some Gas-liquid chemical reaction with fast reaction rate.

Utility model content

The first technical problem to be solved by the utility model is to provide an integrated device for gas delivery and material stirring; the device increases the buffer intake for the biotransformation process of _H2 and CO in the anaerobic bioreactor The chamber is used to reduce the impact on microorganisms when the intake velocity fluctuates, and a microporous aeration device is used to increase the contact area between fine air bubbles and microorganisms. The material circulates from the center down to the inner wall around the main body of the bioreactor, which not only realizes the full mixing of the anaerobic reaction materials, but also effectively increases the contact reaction time between the gas and microorganisms, and strengthens the biotransformation process of the gas.

The second technical problem to be solved by the utility model is to provide a bioreactor including the above-mentioned integrated device for gas delivery and material stirring; the bioreactor cooperates with the above-mentioned integrated device to make the bioreactor The material in the bioreactor circulates from the center down to the inner wall around the main body of the bioreactor, which not only realizes the full mixing of the anaerobic reaction materials, but also effectively increases the contact reaction time between the gas and the microorganisms, and the bioreactor is equipped with A gas circulation pipeline, the gas circulation pipeline can adapt to different intake air components, and achieve efficient and thorough conversion through the circulation between the inner cavity of the reactor main body and the inner cavity of the buffer inlet chamber.

In order to solve the above-mentioned first technical problem, the utility model adopts the following technical solutions:

An integrated device for gas conveying and material stirring, the device includes a rotating stirring shaft and a motor for driving the rotating stirring shaft;

A buffer air intake chamber with an air inlet is provided on the rotating stirring shaft, the rotating stirring shaft can rotate relative to the buffer air intake chamber, and the junction between the rotating stirring shaft and the buffer air intake chamber is sealed set up;

The stirring portion of the rotating stirring shaft is placed outside the buffer air intake chamber, and the stirring portion of the rotating stirring shaft is provided with a slanted blade disc turbine agitator, and the bottom end of the rotating stirring shaft is provided with microporous aeration device; the microporous aeration device is used to increase the contact area between fine air bubbles and microbial reactions, and cooperates with the multi-layer oblique blade disc turbine agitator to make the materials in the bioreactor go from the center down and then along the bioreactor body. The surrounding inner wall circulates upwards, which realizes the full mixing of anaerobic reaction materials, effectively increases the contact reaction time between gas and microorganisms, and strengthens the biotransformation process of gas.

A ventilation hole is provided on the shaft wall of the rotating stirring shaft in the buffer air inlet chamber, and the ventilation hole is arranged in communication with the microporous aeration device through the air inlet chamber provided in the rotating stirring shaft.

Further, the buffer air intake chamber is a box structure.

Further, the joint between the rotating stirring shaft and the buffer inlet chamber is sealed by an oily graphite stuffing box, and the oily graphite stuffing box is arranged around the rotating stirring shaft. The oily graphite stuffing box, one is set on the top surface of the buffer air intake chamber; The rotating stirring shaft passing through the oily graphite stuffing box can rotate freely.

Further, the motor is fixed above the buffer air intake chamber through a frame, and the main shaft of the motor is connected to the rotating stirring shaft, and the axis of the main shaft of the motor and the axis of the rotating stirring shaft are same axis. This type of transmission structure is relatively simple, has high energy utilization efficiency, and avoids the possibility of mechanical problems.

Further, the inclination angle θ of the blades in the inclined-blade disk turbine agitator is the same, and the inclination angle θ is 30°-45°. In the prior art, vertical blades are used, which can only disperse and stir in the radial direction. However, this patent uses blades with an inclination angle θ, which can achieve radial and axial mixing and increase biological reactions. The residence time of the gas in the vessel.

Further, the stirring portion of the rotating stirring shaft is provided with at least three layers of inclined blade disc turbine agitators, the specifications of the three layers of inclined blade disc turbine agitators are the same, and the distance between layers is the same; the rotating stirring The upper part of the stirring part of the shaft leaves 1/5 to 1/4 of the length without installing the inclined-blade disc turbine agitator. , and ensure that there is a certain amount of material on the top and bottom of the inclined blade disc turbine agitator on each layer, so that when the rotating stirring shaft is rotating and stirring, the material in the bioreactor can be made from the center down and then along the periphery of the bioreactor body The inner wall circulates upwards to realize the full mixing of anaerobic reaction materials.

In order to solve the above-mentioned second technical problem, the utility model adopts the following technical solutions:

A bioreactor comprising the above-mentioned integrated device, the bioreactor includes a reactor main body with an inner cavity, the buffer air inlet chamber is arranged above the reactor main body, and the stirring part of the rotating stirring shaft located in the lumen of the reactor body;

The inner cavity of the reactor main body and the inner cavity of the buffer air inlet chamber are communicated through an air inlet chamber provided in the rotating stirring shaft. Through this arrangement, the gas in the buffer air inlet chamber can only enter the inner cavity of the reactor main body through the ventilation holes provided on the shaft wall of the rotating stirring shaft.

Further, a gas circulation pipeline is also provided between the inner cavity of the reactor main body and the inner cavity of the buffer inlet chamber. The gas circulation pipeline is capable of adapting to different intake air components, and achieves efficient and complete conversion through the circulation between the inner cavity of the reactor main body and the inner cavity of the buffer intake chamber.

Further, the diameter of the inclined blade disk turbine agitator located in the inner cavity of the reactor main body is 20%-50% of the inner diameter of the reactor main body. The purpose of such arrangement is to facilitate the circulation of the materials in the bioreactor from the center downwards and then upwards along the inner walls around the main body of the bioreactor.

Further, an oily graphite stuffing box is arranged around the rotating stirring shaft in the inner cavity of the buffer inlet chamber; the function of the oily graphite stuffing box provided here is to relatively seal off the buffer inlet chamber. The inner cavity and the outer space are relatively sealed and isolated from the inner cavity of the reactor main body and the inner cavity of the buffer inlet chamber.

The main body of the reactor is provided with a feed inlet, a feed outlet and a gas outlet. The feed port is used to feed the anaerobic reaction materials, the feed port is used to discharge the reacted materials, and the gas outlet is used to output the gas after reaction and conversion in the inner cavity of the reactor main body.

The feed inlet is located at the lower part of the reactor main body, and the material outlet and gas outlet are respectively located at the upper part of the reactor main body. The feed inlet is arranged at the lower part of the reactor main body, which prevents the material that has just entered the bioreactor main body from overflowing directly out of the feed outlet.

The height position of the inclined blade disk turbine agitator arranged in the reactor main body is lower than the position of the discharge port. Since the oblique-blade disc turbine agitator is stirring, there are materials above and below, and when the liquid level of the material in the main body of the bioreactor is equal to the height of the discharge port, it is convenient for the discharge port to overflow and discharge.

The working principle of the utility model is as follows:

The material is added into the main body of the bioreactor from the feed inlet, fully mixed by the inclined-blade disc turbine agitator, and the remaining materials after the reaction are discharged from the outlet; after the synthesis gas to be processed enters the buffer inlet chamber, it passes The air passage provided on the shaft wall of the rotating stirring shaft enters the inner cavity of the main body of the bioreactor, and the syngas forms microporous bubbles into the main body of the bioreactor through the microporous aeration device, and is dispersed and discharged under the action of the rotating stirring shaft. Fully contact with microorganisms to react and transform, and the gas produced is finally discharged from the gas outlet together with the biogas generated by the bioreactor itself. According to the different components of the incoming syngas, the effective conversion of syngas can be realized through gas circulation treatment.

Compared with the prior art, the utility model has the following positive and beneficial effects:

1. The integrated device provided in the utility model is aimed at the biotransformation process of _H2 and CO in the anaerobic bioreactor, adding a buffer air intake chamber to reduce the impact on microorganisms when the air intake velocity fluctuates.

2. The bioreactor provided in the utility model is equipped with a gas circulation pipeline, which can adapt to different intake air components, and passes through the inner cavity of the reactor main body and the inner cavity of the buffer intake chamber. The circulation between chambers realizes efficient and thorough conversion.

3. The microporous aeration device adopted in the utility model increases the contact area between fine air bubbles and microorganisms, and at the same time cooperates with the multi-layer oblique blade disc turbine agitator, which can make the materials in the bioreactor regenerate from the center downward. Circulating upward along the inner walls around the main body of the bioreactor not only realizes the full mixing of the anaerobic reaction materials, but also effectively increases the contact reaction time between the gas and microorganisms, and strengthens the biotransformation process of the gas.

4. The utility model adopts the design of the microporous aeration device at the bottom end of the rotating agitating shaft and the oblique leaf disk turbine agitator above the microporous aerating device, so that the material in the main body of the bioreactor is in the air when the rotating agitating shaft starts to rotate. After moving from top to bottom in the stirring zone, it moves from bottom to top along the inner wall of the main body of the reactor, so as to realize the stirring and mixing of materials in the bioreactor, and at the same time make the material enter the main body of the bioreactor from the microporous aeration device. The synthesis gas in the reactor disperses as the material moves and then floats up, no longer confined to the central area of the reactor main body, achieving a good gas-liquid mass transfer effect.

5. In the utility model, through the cooperation of the buffer air intake chamber, the microporous aeration device and the multi-layer inclined-blade disc turbine agitator, the delivery of the synthesis gas and the agitation of the gas-liquid mixture can be realized at the same time, effectively Disperses the syngas gas and increases the reaction time between the syngas gas and microorganisms, and improves the methanation effect of the system biological method.

6. In the case of reducing the complexity of the system structure, the utility model increases the mass transfer effect and residence time of the synthesis gas in the fermentation material by feeding the synthesis gas into the bioreactor and effectively dispersing it, and at the same time Mix and stir the system materials to fully realize the biological methanation process.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the first embodiment of the utility model.

Fig. 2 is a schematic diagram of the overall structure of the second embodiment of the utility model.

Fig. 3 is a schematic diagram of the movement of gas and materials during stirring in the second embodiment of the present invention.

detailed description

The specific embodiment of the utility model is described below in conjunction with accompanying drawing.

Example 1:

As shown in Figure 1, an integrated device for gas conveying and material stirring, the device includes a rotating stirring shaft 1 and a motor 2 for driving the rotating stirring shaft 1 to rotate; the motor 2 is fixed by a frame 21 It is arranged above the buffer air intake chamber 3, and the main shaft of the motor 2 is connected to the rotating stirring shaft 1 through a coupling, and the axis of the main shaft of the motor 2 is the same as the axis of the rotating stirring shaft 1 axis.

The rotary stirring shaft 1 is provided with a buffer air intake chamber 3 with an air inlet 31, the buffer air intake chamber is a box structure, the rotary stirring shaft 1 can rotate relative to the buffer air intake chamber 3, and the The joint between the rotating stirring shaft 1 and the buffer air intake chamber 3 is sealed by an oily graphite packing box 6 , and the oily graphite packing box 6 is arranged around the rotating stirring shaft 1 . Two oily graphite stuffing boxes 6 are provided in the present embodiment, one is arranged on the top surface outside the buffer inlet chamber 3; the other is arranged on the bottom of the inner cavity 32 of the buffer inlet chamber 3; The inner cavity 32 of 3 is relatively sealed and isolated from the outside, and the rotating stirring shaft 1 passing through the oily graphite packing box 6 can rotate freely.

Further, the stirring part 11 of the rotating stirring shaft 1 is placed outside the buffer air intake chamber 3, and the stirring part 11 of the rotating stirring shaft 1 is provided with a three-layer oblique-bladed disk turbine agitator 4, and the rotating The bottom end of the stirring shaft 1 is provided with a microporous aeration device 5, and the shaft wall of the rotating stirring shaft 1 in the buffer air intake chamber 3 is provided with a ventilation channel 12, and the ventilation channel 12 is provided through the rotating stirring shaft 1. The air intake chamber of the microporous aeration device 5 is communicated with.

Further, the three-layer inclined-blade disk turbine agitator 4 provided on the stirring part 11 of the rotating stirring shaft 1 has the same specifications, and the distance between layers is the same, and the inclined-blade disk turbine agitator 4 The inclination angle θ of the middle blades is the same, and the inclination angle θ is 30° to 45°, and at the same time, 1/5 to 1/4 of the length of the stirring part 11 of the rotating stirring shaft 1 is not installed with the inclined blade disc Turbine agitator 4, through above-mentioned setting, makes the inclined-blade disc turbine agitator 4 on the stirring part 11 be located in reaction material, and has guaranteed that the inclined-blade disc turbine agitator 4 of each layer has certain material up and down, like this When the rotating stirring shaft 1 is rotating and stirring, the materials in the bioreactor are circulated downward from the center and then upward along the inner wall around the main body of the bioreactor, so as to realize the full mixing of the anaerobic reaction materials.

Example 2:

As shown in Figures 1, 2, and 3, a bioreactor comprising the above-mentioned integrated device, the bioreactor includes a reactor body 7 with an inner chamber 71, and the reactor body 7 is provided with a feed Port 72, feed outlet 73 and gas outlet 74, wherein the feed inlet 72 is located at the bottom of the reactor body 7, and the feed outlet 73 and gas outlet 74 are respectively located at the top of the reactor body 7; The buffer air inlet chamber 3 is arranged above the reactor main body 7 , and the stirring part 11 of the rotating stirring shaft 1 is located in the inner cavity 71 of the reactor main body 7 .

The inner chamber 71 of the reactor main body 7 communicates with the inner chamber 32 of the buffer air inlet chamber 3 through the air inlet chamber provided in the rotating stirring shaft 1 . Through this setting, the gas in the buffer gas inlet chamber 3 can only enter the inner cavity 71 of the reactor main body 7 through the ventilation hole 12 provided on the shaft wall of the rotating stirring shaft 1 .

Further, an oily graphite packing box 6 is arranged around the rotating stirring shaft 1 in the inner cavity 32 of the buffer air intake chamber 3 . The function of the oily graphite stuffing box 6 provided here is to relatively seal and isolate the inner chamber 32 of the buffer inlet chamber 3 from the external space, and then relatively seal and isolate the inner chamber 71 of the reactor main body 7 from the buffer inlet chamber 3 The lumen 32.

Further, a gas circulation pipeline 8 is provided between the inner cavity 71 of the reactor main body 7 and the inner cavity 32 of the buffer inlet chamber 3. In this embodiment, the gas circulation pipeline 8 and the buffer inlet chamber The air inlet 31 on the reactor body 3 is communicated, and the gas circulation pipeline 8 can adapt to different intake air components, and circulates between the inner chamber 71 of the reactor main body 7 and the inner chamber 32 of the buffer inlet chamber 3 The effect realizes efficient and thorough transformation.

Further, the height position of the inclined blade disc turbine agitator 4 arranged in the reactor main body 7 is lower than the position of the discharge port 73, and the oblique blade located in the inner cavity 71 of the reactor main body 7 The disc turbine agitator 4 has a diameter of 20% to 50% of the inner diameter of the reactor main body 7 . The purpose of such arrangement is to facilitate the circulation of the materials in the bioreactor from the center downwards and then upwards along the inner walls around the main body of the bioreactor 7 .

The utility model specific workflow is as follows:

After the synthesis gas enters the buffer air intake chamber 3 from the air inlet 31, it enters the rotating agitation shaft 1 through the ventilation hole 12 on the shaft wall of the rotating agitation shaft 1 in the buffer air intake chamber 3, and is passed through the micro The porous aeration device 5 forms microporous air bubbles and enters the inner cavity 71 of the reactor main body 7. Under the action of the inclined blade disc turbine agitator 4, the syngas stays for a long time and is evenly distributed in the inner cavity 71 of the reactor main body 7 In the process, the methanation of the synthesis gas is realized under the action of microorganisms, and finally the biomass gas mainly composed of methane and carbon dioxide is generated and exits from the gas outlet 74 .

The gas circulation pipeline 8 in the bioreactor provided by the utility model can switch according to the different components of the final biomass gas and the requirements of the treatment effect. When the final biomass gas contains more impurities (such as including _H2 and CO) At this time, the gas circulation pipeline 8 is opened, and part of the produced gas is circulated from the gas circulation pipeline 8 through the gas inlet 31 into the reactor main body 7, and the methanation occurs again to further improve the conversion rate.

The materials for maintaining the microbial system in the bioreactor main body 7 include organic waste mixtures (such as sewage sludge from sewage plants, kitchens, garbage, organic waste water, poultry manure) and organic nutrient solutions, and the materials enter through the feed port 72 In the inner cavity 71 of the reactor main body 7, under the action of the inclined blade disc turbine agitator 4, a circular movement is formed from the center downwards and then upwards along the inner wall around the inner cavity 71, so that not only the microorganisms and the materials are fully mixed and reacted so that The activity of the microbial system is maintained, the microorganisms are fully mixed with the syngas and the methanation reaction time is prolonged, and the finally reacted materials leave through the discharge port 73 .

The words "upper", "lower", "left", "right" etc. used in this article to describe the orientation are based on the orientation shown in the drawings for the convenience of explanation. In the actual device, these Orientation may vary due to how the unit is positioned.

To sum up, the embodiment described in this utility model only provides a kind of optimal implementation mode, and the technical content and technical characteristics of this utility model have been disclosed as above, but those who are familiar with this technology may still be based on this utility model. According to the disclosed content, various replacements and modifications are made without departing from the creative spirit of the present utility model; therefore, the protection scope of the present utility model is not limited to the technical content disclosed in the embodiments, so all All equivalent changes made are within the protection scope of the present utility model.

Claims (10)

1. An integrated device for gas conveying and material stirring, characterized in that: the device includes a rotating stirring shaft and a motor for driving the rotating stirring shaft; A buffer air intake chamber with an air inlet is provided on the rotating stirring shaft, the rotating stirring shaft can rotate relative to the buffer air intake chamber, and the junction between the rotating stirring shaft and the buffer air intake chamber is sealed set up; The stirring portion of the rotating stirring shaft is placed outside the buffer air intake chamber, and the stirring portion of the rotating stirring shaft is provided with a slanted blade disc turbine agitator, and the bottom end of the rotating stirring shaft is provided with microporous aeration device; A ventilation hole is provided on the shaft wall of the rotating stirring shaft in the buffer air inlet chamber, and the ventilation hole is arranged in communication with the microporous aeration device through the air inlet chamber provided in the rotating stirring shaft. 2. An integrated device for gas conveying and material stirring according to claim 1, characterized in that: the buffer inlet chamber is a box structure. 3. An integrated device for gas conveying and material stirring according to claim 1, characterized in that: the connection between the rotating stirring shaft and the buffer inlet chamber is sealed by an oily graphite stuffing box Set, and the oily graphite stuffing box is set around the rotating stirring shaft. 4. An integrated device for gas transportation and material stirring according to claim 1, characterized in that: the motor is fixed above the buffer air intake chamber through a frame, and the main shaft of the motor is connected to the The rotating stirring shaft is connected, and the axis of the main shaft of the motor is the same as the axis of the rotating stirring shaft. 5. An integrated device for gas conveying and material stirring according to claim 1, characterized in that: the inclination angle θ of the blades in the inclined blade disc turbine agitator is the same, and the inclination angle θ is 30°～45°. 6. An integrated device for gas transportation and material stirring according to claim 1, characterized in that: the stirring part of the rotating stirring shaft is provided with at least three layers of inclined blade disc turbine agitators, three The specifications of the inclined-blade disc turbine agitators in each layer are the same, and the distance between the layers is the same; the upper part of the stirring part of the rotating stirring shaft leaves 1/5 to 1/4 of the length without installing the inclined-blade disc turbine agitator . 7. A bioreactor comprising the integrated device according to one of claims 1 to 6, characterized in that: the bioreactor comprises a reactor body with an inner cavity, and the buffer inlet chamber is arranged at Above the reactor main body, the stirring part of the rotating stirring shaft is located in the inner cavity of the reactor main body; The inner cavity of the reactor main body and the inner cavity of the buffer air inlet chamber are communicated through an air inlet chamber provided in the rotating stirring shaft. 8 . The bioreactor according to claim 7 , wherein a gas circulation pipeline is further provided between the inner cavity of the reactor main body and the inner cavity of the buffer inlet chamber. 9. A kind of bioreactor according to claim 7, it is characterized in that: the oblique-bladed disk turbine agitator located in the inner cavity of the reactor main body has a diameter of 20% to 50% of the inner diameter of the reactor main body. %. 10. A bioreactor according to claim 7, characterized in that: an oily graphite stuffing box is arranged around the rotating stirring shaft in the inner chamber of the buffer inlet chamber; There are feed inlet, feed outlet and gas outlet, and the feed inlet is located at the lower part of the reactor main body, and the feed outlet and gas outlet are respectively located at the upper part of the reactor main body; The height position of the inclined blade disk turbine agitator in the main body of the device is lower than the position of the discharge port.