CN106609240B

CN106609240B - Frame type soft body anaerobic reactor

Info

Publication number: CN106609240B
Application number: CN201510695782.XA
Authority: CN
Inventors: 王建安
Original assignee: SHENZHEN PUXIN ENVIRONMENT AND WASTE RESOURCE UTILIZATION TECHNOLOGY Co Ltd
Current assignee: SHENZHEN PUXIN ENVIRONMENT AND WASTE RESOURCE UTILIZATION TECHNOLOGY Co Ltd
Priority date: 2015-10-23
Filing date: 2015-10-23
Publication date: 2020-03-10
Anticipated expiration: 2035-10-23
Also published as: CN106609240A

Abstract

The invention provides a frame-type soft body anaerobic reactor, which comprises a soft bag made of an air-proof membrane material and a frame made of a rigid material, wherein the soft bag is placed in the frame; the frame comprises at least 3 upright posts and at least 2 circles of cross rods, each circle of cross rods comprises at least 2 cross rods, and the cross rods are arranged on the upright posts. The frame-type soft anaerobic reactor can be made into a medium-large reactor filled with fermentation liquor with a water level of several meters or higher. The anaerobic reactor can be completely produced industrially, is convenient to transport and install, and is beneficial to commercial popularization.

Description

Frame type soft body anaerobic reactor

Technical Field

The invention belongs to the technical field of methane, and particularly relates to a frame type soft anaerobic reactor.

Background

Chinese patent application No. CN200720200873.2 discloses a novel methane tank, which comprises a soft bag and a concrete or brick-built tank body, wherein the soft bag is placed in the tank body, fermentation liquid and methane are stored in the soft bag, and the liquid level in the soft bag can be maintained at a certain height by the tank body bearing the hydraulic pressure of the soft bag. The construction of the concrete or brick structure pool body of the soft bag methane pool is troublesome and time-consuming, so the soft bag methane pool is not beneficial to large-scale commercial popularization. In addition, the efficiency of the soft methane tank is not high because the tank body with the concrete or brick structure is not insulated.

Chinese patent application No. CN201120128765.5 discloses a household organic waste biogas generating device, which comprises a soft biogas bag, wherein the biogas bag is arranged in a detachable shell. Since the structural design of the detachable housing does not take into account the resistance to the surrounding hydraulic pressure inside the biogas bag, the housing may be damaged when the biogas bag contacts the housing. In addition, the liquid level in the biogas bag can only be maintained by the pulling force at the top of the biogas bag and the natural shape of the biogas bag, and the liquid level in the biogas bag cannot be very high, so that the designed biogas device cannot be made into a medium-large biogas fermentation device with the water level of several meters or even more than ten meters.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a frame type soft anaerobic reactor which can be suitable for medium and large-sized biogas fermentation devices.

The technical scheme adopted by the invention for solving the technical problems is as follows:

providing a frame type soft body anaerobic reactor, which comprises a soft bag made of an air-proof film material and a frame made of a rigid material, wherein the soft bag is placed in the frame; the frame comprises at least 3 upright posts and at least 2 circles of cross rods, each circle of cross rods comprises at least 2 cross rods, and the cross rods are arranged on the upright posts.

Furthermore, a feeding pipe is installed on the feeding pipe connector of the soft bag, and a discharging pipe is installed on the discharging pipe connector of the soft bag.

Furthermore, a discharge hole arranged on the discharge pipe is higher than a feed hole; the highest point of the discharge hole arranged on the feeding pipe is lower than the lowest point of the discharge hole of the discharge pipe.

Furthermore, the tail end of the discharge pipe is branched into two pipelines with open tail ends, wherein one pipeline is vertically upward and forms an air guide port communicated with the atmosphere at the tail end, and the other pipeline horizontally extends out and forms a discharge port of the discharge pipe at the tail end.

Further, the discharge hole arranged on the feeding pipe is lower than the feeding hole.

Further, a one-way valve is installed on the feeding pipe.

Further, install the coupling on the stand, the horizontal pole is installed on the coupling.

Further, the cross bar of the frame passes through at least one upright.

Further, the upright is made of a square profile.

Further, the frame comprises a bottom frame, and the upright posts are mounted on the bottom frame.

Furthermore, a protective cover formed by a protective plate is arranged on the framework in a manner of surrounding the soft bag, and the protective cover comprises a protective cover body and a protective cover top.

Furthermore, the protective cover body is composed of a heat insulation plate, and the top of the protective cover is composed of a hollow sunlight plate.

Further, the protective cover is made of soft heat-insulating materials.

Further, the shield body of the shield is mounted in a frame.

Furthermore, the soft bag is cylindrical, and each circle of cross rods of the frame form a circle.

Furthermore, the top of the soft bag is provided with an air duct.

The frame-type soft body anaerobic reactor comprises a soft bag which is made of airtight membrane material and is connected with a feeding pipe and a discharging pipe in parallel and a frame made of rigid material; the soft bag is placed in the frame, and the frame resists the hydraulic pressure around the soft bag so that a higher water level can be maintained in the soft bag. The soft anaerobic reactor with the structure can be made into a medium-large reactor filled with fermentation liquor with a water level of several meters or higher. The anaerobic reactor can be completely produced industrially, is convenient to transport and install, and is beneficial to commercial popularization. The frame of the anaerobic reactor can be also provided with a protective cover made of steel or plastic plates to protect the soft bag from being damaged by sharp tools, and the protective cover can also be made of heat-insulating plates or sunlight plates to keep the heat of fermentation liquor in the soft bag and be beneficial to the solar energy to heat the fermentation liquor in the soft bag.

Drawings

FIG. 1 is a schematic structural diagram of a frame-type soft body anaerobic reactor provided in example 1 of the present invention;

FIG. 2 is another perspective view of FIG. 1;

FIG. 3 is a sectional view (center line of feed pipe and discharge pipe) of a frame-type soft anaerobic reactor provided in example 1 of the present invention;

FIG. 4 is a schematic structural view of a flexible bag according to embodiment 1 of the present invention;

FIG. 5 is a schematic structural view of a frame in embodiment 1 of the present invention;

FIG. 6 is a cross-sectional view of a frame in embodiment 1 of the present invention (through the center line of a cross bar);

FIG. 7 is a schematic view showing the assembly of a vertical column and a horizontal bar in a frame according to embodiment 1 of the present invention;

FIG. 8 is a schematic view of the structure of a feed pipe in example 1 of the present invention;

FIG. 9 is a schematic illustration of the structure of a tapping pipe according to example 1 of the present invention;

FIG. 10 is a schematic structural diagram of a frame-type soft anaerobic reactor provided in example 2 of the present invention;

FIG. 11 is a schematic structural diagram of a protective cover of the frame-type soft anaerobic reactor provided in example 2 of the present invention;

FIG. 12 is a schematic structural diagram of a frame-type soft anaerobic reactor provided in example 3 of the present invention;

fig. 13 is a schematic structural view of a frame in embodiment 3 of the present invention.

The reference numbers in the drawings of the specification are as follows:

1. a soft bag; 101. the top of the soft bag; 102. a soft bag pool and a 103 gas guide tube; 105. a feed pipe joint; 106. a discharge pipe joint;

2. a frame; 201. a column; 2011. a cross-pipe joint, 2012, a non-cross-pipe joint; 2013. a pipe joint bolt is inserted into the hole; 202. a cross bar; 2021. a cross bar bolt penetrates through the insertion hole; 203. a bottom frame; 204. a top frame; 205. a middle upright post 2051, a pair of through holes; 206. self-tapping screw holes;

3. a feed pipe; 301. a vertical tube; 302. a plug; 303. a pipe joint; 304. a pipe joint; 305. a flange; 306. a feeding port of a feeding pipe; 307. a discharge port of the feeding pipe; 308. a gas guide port of the feeding pipe; 309. a one-way valve;

4. a discharge pipe; 401. a vertical tube; 402. a plug; 403. a pipe joint; 404. a pipe joint; 405. a flange; 406. a feed inlet of the discharge pipe; 407. a discharge port of the discharge pipe;

5. a tightening member;

6. a protective cover; 601. a shield body, 602, a shield top; 603. perforating a feeding pipe; 604. perforating the discharge pipe; 605. perforating the air duct;

9. a feeding and conveying pipe;

10. a discharging conveying pipe;

11. a feed pump;

12. a raw material impoundment;

13. and (4) an overflow tank.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1 to 4, the frame-type soft body anaerobic reactor of the present embodiment comprises a soft bag 1 made of an airtight film material and having a hexahedral surface, and a frame 2 made of a steel pipe and a rigid material such as a channel steel or an aluminum material or a glass fiber reinforced plastic material.

The structure of the soft bag 1 is shown in figure 4. For convenience of description we will divide the flexible bag 1 into a bag top 101 and a flexible bag well 102. That is, the top surface of the hexahedron is a soft bag top 101, and the open container formed by the bottom surface of the hexahedron and four peripheral surfaces is a soft bag tank 102. An air duct 103 is arranged on the soft bag top 101, and a feed pipe connector 105 and a discharge pipe connector 106 are respectively arranged on the soft bag pool 102.

The frame 2 is shown in fig. 5, 6 and 7. The frame 2 is mainly composed of 4 upright columns 201 made of square steel pipes and positioned at 4 corners, 2 upright columns 205 made of square steel pipes and positioned in the middle, and 28 cross bars 202 made of round steel pipes. In order to make the frame 2 more stable and facilitate the fixing of the feeding pipe 3 and the discharging pipe 4, a bottom frame 203 made of channel steel and a top frame 204 made of channel steel are added on the frame 2. As shown in fig. 7, two ends of the cross bar 202 of the frame are respectively provided with a cross bar bolt insertion hole 2021 for inserting a screw rod; as shown in fig. 6, a penetrating pipe fitting 2011 penetrating through the upright post 201 and a non-penetrating pipe fitting 2012 not penetrating through the upright post 201 are welded to the 4 upright posts 201 at the four corners, and the pipe fittings installed on the upright post 201 include the penetrating pipe fitting 2011 and the non-penetrating pipe fitting 2012. The other 2 middle upright posts 205 are respectively provided with a pair of through holes 2051 for the cross rod 202 to pass through. As shown in fig. 7, a pipe joint bolt insertion hole 2013 through which a bolt is inserted is formed in each of the half-pipe joint 2011 and the non-half-pipe joint 2012 of the column 201. When the installation is carried out, the cross rod 202 passes through the through pipe joint 2011 and the middle upright post 205 and is inserted into the non-through pipe joint 2012 of the other upright post 201, the screw rods respectively pass through the pipe joint bolt through hole 2013 and the cross rod bolt through hole 2021, and the nut is locked on the screw rods, so that the cross rod 202 can be fixed on the upright post 201. The 6 upright posts are respectively installed on the bottom frame 203 through bolts, and the top frame 204 is installed on the 6 upright posts through bolts.

As shown in FIG. 1, a feed tube 3 is mounted on a feed tube adaptor 105 of a flexible bag. As shown in fig. 2, the tapping tube 4 is attached to the tapping nipple 106 of the flexible bag. The feed pipe 3 and the discharge pipe 4 are made of PVC or PE plastic pipes.

As shown in FIG. 8, the feed pipe 3 is composed of a vertical pipe 301, a stopper 302, a pipe joint 303 with a flange 305, and a pipe joint 304. A plug 302 plugs the bottom end of the vertical pipe 301. Inlet tube coupler 304 is inserted into inlet tube coupler 105 of the flexible bag and is tightly sealed by a tightening member 5 (shown in FIG. 1).

As shown in fig. 9, the tapping pipe 4 is formed by a vertical pipe 401, a stopper 402, a pipe connector 403 with a flange 405, and a pipe connector 404. The bottom end of the vertical tube 401 is blocked by a plug. The nipple 404 of the tapping pipe is inserted into the flexible bag tapping pipe nipple 106 and is tightly sealed by a clamping element 5 (fig. 2).

As shown in fig. 1 and 2, the feeding pipe 3 and the discharging pipe 4 are fixedly mounted on a bottom frame 203 and a top frame 204 of the frame 2, respectively.

The mouth of feed tube adapter 303 defines feed tube inlet 306 and the mouth of feed tube adapter 304 defines feed tube outlet 307. The mouth of the pipe connection 403 of the tapping pipe is defined as the tapping outlet 407 and the mouth of the pipe connection 404 of the tapping pipe is defined as the tapping inlet 406.

As shown in fig. 3, in order to ensure that the biogas bubbles generated by the fermentation liquid in the soft bag 1 do not overflow from the feeding pipe 3 and the discharging pipe 4, and to maintain the liquid level in the soft bag as the lowest point height of the discharging port 407 of the discharging pipe, the lowest point of the feeding port 306 of the feeding pipe needs to be higher than the highest point of the discharging port 307, and the lowest point of the discharging port 407 of the discharging pipe needs to be higher than the highest point of the feeding port 406; and the highest point of the feed pipe discharge port 307 is lower than the lowest point of the discharge pipe discharge port 407.

The lowest point of the feeding pipe inlet 306 is higher than the lowest point of the discharging pipe outlet 407, so the liquid level of the fermentation liquid in the soft bag 1 is equal to the lowest point of the discharging pipe outlet 407.

As can be seen from fig. 3 and 9, the end of the discharge pipe 4 branches into two open-ended lines, one of which is directed vertically upwards and forms an air inlet 408 at the end, which is open to the atmosphere, and the other of which extends horizontally and forms a discharge opening 407 of the discharge pipe at the end. Since the outlet pipe 4 is usually connected to an outlet feed pipe 10 for feeding the fermentation liquor overflowing from the flexible bag to a overflow tank 13. If the tapping pipe 4 is not provided with the gas guide opening 408, the fermentation liquid in the soft bag will flow out from the tapping and material conveying pipe 10 under the siphon action until the liquid level in the soft bag 1 reaches the highest point of the feeding opening 406 of the tapping pipe. The purpose of the air scoop 408 is to prevent this siphoning effect from occurring.

As can be seen from fig. 3 and 8, the end of the feed pipe 3 is bifurcated into two open-ended pipes, one of which is directed vertically upwards and forms at the end an air-guide opening 308 communicating with the atmosphere, and the other of which extends horizontally and forms at the end a feed inlet 306 for said feed pipe. Since the feed pipe 3 is generally connected to a feed delivery pipe 9 for pumping the fermentation material in the material reservoir 12 into the flexible bag 1. If the feeding pipe 3 is not provided with the air guide port 308, the fermentation liquid in the soft bag can flow out from the feeding and conveying pipe 9 under the siphon action until the liquid level in the soft bag reaches the highest point of the discharging port 307 of the feeding pipe. The purpose of the air scoop 308 is to prevent this siphoning effect from occurring.

As shown in fig. 1-7, the four

upright posts

201 and 2 middle upright posts 205 of the frame are firstly installed on the bottom frame 203 and the top frame 204 is installed on the upright posts 201 and the middle upright posts 205. The cross bar 202 is respectively passed through the butt pipe joint 2011 of one upright column 201 and a middle upright column 205, one end of the cross bar 202 is inserted into the non-butt pipe joint 2012 of the other upright column, a bolt is passed through the hole 2013 on the butt pipe joint 2011 and the hole 2021 at one end of the cross bar 202, another screw rod is passed through the pipe joint bolt through hole 2013 on the pipe joint 2012 and the cross bar bolt through hole 2021 at the other end of the cross bar 202, and a nut is locked on the screw rod, so that the cross bar 202 is installed on the upright column 201. The flexible bag 1 is placed in the frame 2. As shown in FIGS. 1 and 3, the adapter 304 of the inlet tube 3 is inserted into the inlet tube connector 105 of the flexible bag and is clamped by the clamping element 5, and the adapter 404 of the outlet tube 4 is inserted into the outlet tube connector 106 of the flexible bag and is clamped by the clamping element 5. The two ends of the feed pipe 3 and the discharge pipe 4 are fixed on the bottom frame 203 and the top frame 204 of the frame respectively. Connecting the feed pipe 3 to the feed delivery pipe 9 via a flange 305; the tapping pipe 4 is connected to the tapping feed pipe 10 by means of a flange 405. The other end of the feed conveyor pipe 9 is connected to a feed pump 11 located in a raw material reservoir 12. The other end of the discharge conveying pipe 10 is connected with an overflow tank 13.

When in use, the fermentation raw material in the raw material accumulation pool 12 is pumped into the soft bag 1 by the feeding pump 11 until the soft bag 1 is full (the feed liquid overflows from the discharge pipe 4). Biogas generated by fermenting raw materials in the soft bag is stored in a gas chamber formed by a space above the liquid level in the soft bag 1 and is conveyed to a biogas gas appliance or other biogas storage devices through a gas guide pipe 103. When feeding in normal times, the feeding pipe 3 feeds fresh raw materials, and the soft bag 1 guides fermented raw materials out of the discharging pipe 4 to the flash tank 13.

Since the frame 2 made of steel pipes according to the above-described embodiment of the present invention has good strength and rigidity and can withstand a large soft bag hydraulic pressure without being deformed, the liquid level in the soft bag 1 can be a high level. Without the action of the frame 2, the flexible bag expands around under the action of hydraulic pressure when filled with liquid, and the liquid level in the flexible bag drops, thereby converting the hydraulic pressure into a pulling force on the inlet pipe connection 105 and the outlet pipe connection 106, causing tearing of the flexible bag from the inlet pipe connection 105 and the outlet pipe connection 106. The advantage of high liquid level in the soft bag is that the higher the liquid level in the soft bag 1 is, the smaller the soft bag occupies the ground, which is more beneficial to making a large-scale anaerobic reactor; in addition, the closer the height of the flexible pouch is to its width and length, the less material is required to make a flexible pouch of the same volume.

Example 2

As shown in fig. 2 and 10, a plurality of self-tapping screw holes 206 are formed in the columns 201, the center column 205, the bottom frame 203, and the top frame 204 of the frame. As shown in fig. 10, a shield 6 formed of a solar panel is installed around the soft bag 1 around the periphery and the top of the soft bag 1. The sun panel is attached to the frame 2 by self-tapping screws through self-tapping screw holes 206 in the frame 2. The protective hood is composed of a protective hood body 601 and a protective hood top 602. The protective cover can also be made into a protective cover body 601 by using a common heat-insulating plate and a protective cover top 602 by using a sunlight plate. The protective cover with the structure and the protective cover of the full sunlight plate have the functions of protecting the soft bag 1 from being damaged by sharp instruments, preserving heat and utilizing solar energy to heat.

Of course, the protective cover 6 can also be made of a color steel plate or a soft material such as a plastic film or a double-layer plastic heat-preservation film. The shield made of a soft double-layer plastic insulating film is particularly suitable for use in the cylindrical anaerobic reactor of example 3 below. As shown in fig. 11, a feed pipe through hole 603 for a feed pipe 3 to penetrate and a discharge pipe through hole 604 for a discharge pipe 4 to penetrate are formed on the shield 6; and an airway tube aperture 605 through which the airway tube 103 extends. For better protection of the flexible bag, the protective hood body 601 can also be mounted in the frame 2.

In addition, in this embodiment, if a hollow sunlight panel is used as the protective cover 6, a heat insulating pad is installed between the soft bag 1 and the ground, the air duct 103 (redundant) is eliminated, the feeding pipe joint and the discharging pipe joint of the soft bag are installed at the lower part of the soft bag, the feeding pipe joint 105 of the soft bag is connected with a tap water pipe, the discharging pipe joint 106 of the soft bag is connected with a water conveying pipe, and the soft bag 1 is made of black materials, then the embodiment will form a soft bag type solar water heater. The soft bag type solar water heater integrates the functions of heating and water storage, and is economical and practical.

Example 3

As shown in fig. 12, one of the differences between embodiment 3 and embodiment 1 is that the flexible bag 1 is cylindrical, and the corresponding frame 2 is formed by three central posts 205 and three rings of cross bars 202, each ring of cross bars comprises three cross bars 202, and the three cross bars 202 form a circle. The cylindrical frame type soft anaerobic reactor has the advantage that the frame 2 can bear larger hydraulic pressure outwards from the central axis of the cylinder, thereby being beneficial to building an ultra-large anaerobic reactor.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A frame type soft body anaerobic reactor is characterized by comprising a soft bag made of an air-tight membrane material and a frame made of a rigid material, wherein the soft bag is placed in the frame; the soft bag is respectively provided with a feeding pipe joint and a discharging pipe joint, the frame comprises at least 3 upright posts and at least 2 circles of cross rods, each circle of cross rods comprises at least 2 cross rods, and the cross rods are arranged on the upright posts;

the soft bag is cylindrical, and each circle of cross rods of the frame form a circle.

2. A frame-type anaerobic bioreactor according to claim 1, wherein the flexible bag is provided with a feeding pipe at a feeding pipe joint and a discharging pipe at a discharging pipe joint.

3. A frame-type soft anaerobic reactor according to claim 2, wherein a discharge port arranged on the discharge pipe is higher than a feed port; the highest point of the discharge hole arranged on the feeding pipe is lower than the lowest point of the discharge hole of the discharge pipe.

4. A framed soft anaerobic reactor according to claim 3, wherein the end of the discharge pipe is bifurcated into two open-ended pipes, one of which is directed vertically upwards and forms an air vent at the end communicating with the atmosphere, and the other of which extends horizontally and forms a discharge outlet for the discharge pipe at the end.

5. A frame-type soft anaerobic reactor according to claim 2, wherein the feed pipe is provided with a discharge port lower than a feed port thereof.

6. A frame-type software anaerobic reactor according to claim 2, wherein a one-way valve is mounted on the feed pipe.

7. A frame-type soft anaerobic reactor according to claim 1, wherein the upright posts are provided with pipe joints, and the cross bars are provided with the pipe joints.

8. A frame-type soft anaerobic reactor according to claim 1, wherein the cross-bar of the frame passes through at least one column.

9. A frame-type software anaerobic reactor according to claim 1, wherein the upright is made of square section.

10. A frame-type soft anaerobic reactor according to claim 1, wherein the frame comprises a bottom frame, and the upright posts are mounted on the bottom frame.

11. A frame-type anaerobic bioreactor according to claim 1, wherein a protective cover consisting of a protective plate is mounted on the frame surrounding the flexible bag, the protective cover comprising a protective cover body and a protective cover top.

12. A frame-type software anaerobic reactor according to claim 11, wherein the shield body is composed of an insulation board and the shield top is composed of a hollow sunlight board.

13. A frame-type soft anaerobic reactor according to claim 11, wherein the protective cover is made of a soft thermal insulation material.

14. A frame-type soft anaerobic reactor according to claim 11, wherein the body of the protective cover is mounted within a frame.

15. A frame-type anaerobic bioreactor according to claim 1, wherein an air duct is mounted on the top of the flexible bag.