CN209685716U - Simple collection, purification, storage and delivery device for biogas - Google Patents

Abstract

A kind of simple collection and purification storing and conveying device of biogas, including three phase separator, anaerobic tower, washing lotion pond, storage wash tower, head tank, pump.Storage is washed tower and is mounted on above washing lotion pond, and head tank is mounted on storage and washes above tower, and bottom is washed tower with storage and be connected by a lower part U-tube and a liquid connecting leg；Lower part U-tube one end is connected with the high-order trench bottom, and the other end is connected with one end of a top U-tube.The three phase separator is mounted on anaerobic tower, and one root cutting of connection enters the gas collecting tube in the lower part U-tube.The storage side Xi Ta is arranged in parallel with the floating head pipe being connected with it vertically.Floating head bottom of the tube is equipped with tapping valve, and the tapping valve is connected with hose and floating head.Pump is mounted on washing lotion pond side, and entrance is communicated by inlet tube with washing lotion bottom of pond portion, exports connection outlet pipe, and outlet protrudes into head tank from head tank top.

Description

Simple collection, purification, storage and delivery device for biogas

technical field

The utility model belongs to the field of biogas collection and purification, in particular to a simple collection, purification, storage and delivery device for anaerobic pond biogas.

Background technique

Biogas: It is a combustible gas produced by microbial fermentation of organic matter in an anaerobic environment under certain conditions of temperature, humidity, and pH. Because this gas was first found in swamps, lakes, and ponds, people called it biogas. Biogas is a mixed gas whose main component is methane, followed by carbon dioxide, hydrogen sulfide (H ₂ S), ammonia and other components. In the composition of biogas, combustible components include gases such as methane, hydrogen sulfide, carbon monoxide and heavy hydrocarbons; non-combustible components include gases such as carbon dioxide, nitrogen and ammonia.

The state supports the development of biogas, but the current biogas industry is in a recession! The reasons are: the middle-aged rural laborers go out to work, and no one maintains the biogas digester; there are few people at home, and there are few pigs at home, so there is no manure material to maintain the biogas digester. The breeding industry is becoming centralized and large-scale, and the feces raw materials needed for biogas digesters have not decreased. The biogas produced by the biogas digester in the current technology gathers above the biogas digester, and the pressure generated by the biogas pushes the liquid out of the pond. Using the above-mentioned pressure-resistant biogas digester technology to build a small household biogas digester requires only bricks and cement mortar, and the cost is relatively low; to build a large-scale biogas digester, in order to prevent cracks and air leakage caused by foundation settlement and temperature difference changes, a large amount of steel and concrete are required. make the cost higher. A large number of anaerobic ponds have been built to control the fecal pollution of large-scale aquaculture. However, a large amount of biogas produced by anaerobic ponds has not been utilized, and the biogas produced by untreated smelly water ponds has not been utilized, resulting in a huge waste of biogas resources and air pollution.

Utility model content

The purpose of the utility model is to provide a low-cost, easy-to-operate device for simple collection, purification, storage and delivery of biogas from anaerobic ponds. The utility model is characterized in that the three-phase separator and the pressure-adjustable drainage method are used to collect, purify, store and transport the biogas.

In order to achieve the above object, the utility model adopts the following technical solutions:

A simple collection, purification, storage and delivery device for biogas, including a three-phase separator, anaerobic tower, washing liquid tank, storage washing tower, elevated tank, and pump;

The storage and washing tower is installed above the washing liquid tank, and its bottom part overlaps with the upper part of the washing liquid tank. The elevated tank is installed above the storage and washing tower, and its bottom passes through a lower U-shaped pipe and a liquid The connecting pipe is connected with the storage and washing tower;

One end of the lower U-shaped pipe is connected to the bottom of the elevated tank, the other end is connected to one end of an upper U-shaped pipe, and the unconnected end of the upper U-shaped pipe is emptied;

The three-phase separator is installed on the anaerobic tower, and the three-phase separator is connected to the end of the lower U-shaped pipe connected to the upper U-shaped pipe through a gas collecting pipe, and the gas collecting pipe is inserted into In the lower U-shaped tube;

One side of the storage and washing tower is vertically parallel with a floating head pipe, and the upper and lower parts of the floating head pipe are respectively connected to the upper and lower parts of the side wall of the storage and washing tower through an upper connecting pipe and a lower connecting pipe;

A liquid discharge valve is installed at the bottom of the floating head pipe, and the liquid discharge valve is connected with a hose and a floating head, and the flexible pipe and the floating head are placed in the floating head pipe;

The pump is installed on the side of the lotion pool, its inlet communicates with the bottom of the lotion pool through an inlet pipe, and its outlet is connected to an outlet pipe, and the outlet pipe extends from the upper part of the elevated tank into the elevated tank;

A gas supply valve and a vent valve are also installed on the top of the storage and washing tower.

Further, an upper controller is arranged on the high level tank, and two floating balls are hung on the bottom of the upper controller; a lower controller is arranged in the washing liquid pool, and a floating ball is hung on the bottom of the lower controller. ball; both the upper controller and the lower controller can control the start and stop of the pump.

Further, the three-phase separator is composed of a plurality of inverted funnels, and the upper parts of the inverted funnels are connected by pipelines, and the pipelines are connected with the gas collecting pipe.

Further, a plurality of nozzles are arranged above the inside of the storage and washing tower, and the nozzles are all connected by pipelines, and the pipelines are connected to liquid connecting pipes. Fillers are arranged in the storage and washing tower to increase the contact area between biogas and lye.

Further, the buoyant head is composed of a buoyant bottle, a buoyancy ring, and a hard tube. The opening of the buoyant bottle is downward, and the hard tube is inserted into the buoyant bottle from the mouth of the buoyant bottle and connected with the buoyant bottle. Connected, and one end of the hard tube exposed from the floating bottle is connected with the flexible tube.

Further, the height of the end of the lower U-shaped tube connected to the upper U-shaped tube is lower than the height of the two floating balls at the bottom of the upper controller; The end is located above the liquid connection pipe and close to the liquid connection pipe; the empty end of the upper U-shaped pipe is at the same height as the upper part of the elevated tank; the diameter of the lower U-shaped pipe is larger than the diameter of the liquid connection pipe 3-5 times.

The beneficial effects of the utility model are: only need to use normal pressure and cheap equipment, can collect, purify, store, transport and use the methane in the smelly pool, especially the anaerobic pool, which is safe and environmentally friendly, and has economic benefits.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

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

1 Vent valve, 2 Air supply valve, 3 Spray head, 4 Upper connecting pipe, 5 Floating head pipe, 6 Floating head, 7 Liquid level in floating head, 8 Buoyancy ring, 9 Fixed rope, 10 Hoses, 11 Drain valve, 12 Bottom connection Pipe, 13 washing liquid tank, 14 inlet pipe, 15 pump, 16 outlet pipe, 17 storage washing tower, 18 liquid level in storage washing tower, 19 filler, 20 lower U-shaped pipe, 21 high level tank, 22 upper controller, 23 Liquid connecting pipe, 24 upper U-shaped pipe, 25 gas collecting pipe, 26 three-phase separator, 27 anaerobic tower, 28 lower controller.

Detailed ways

Example:

As shown in Fig. 1 , a simple collection, purification, storage and delivery device for biogas includes a three-phase separator 26, an anaerobic tower 27, a washing liquid tank 13, a storage washing tower 17, an elevated tank 21, and a pump 15.

The storage and washing tower 17 is installed above the washing liquid pool 13, and its bottom part overlaps with the top of the washing liquid pool 13. The elevated tank 21 is installed above the storage and washing tower 17. Preferably, the elevated tank 21 is located at At 1-10m above the side of the storage and washing tower 17, the height of the head tank 21 from the storage and washing tower 17 is adjusted according to the biogas pressure required for gas supply. The bottom of the head tank 21 passes through a lower U-shaped pipe 20 and a liquid The connecting pipe 23 is connected with the storage and washing tower 17 . One end of the lower U-shaped pipe 20 is connected to the bottom of the elevated tank 21, and the other end is connected to one end of an upper U-shaped pipe 24, and the unconnected end of the upper U-shaped pipe 24 is emptied.

The three-phase separator 26 is installed on the anaerobic tower 27, and the anaerobic tower 27 is installed on one side of the washing liquid tank 13, and the three-phase separator 26 is connected to the The lower U-shaped pipe 20 is connected to one end of the upper U-shaped pipe 24, and the gas collecting pipe 25 is inserted into the lower U-shaped pipe 20; the three-phase separator 26 is composed of a plurality of inverted funnels, and the inverted The upper part of the funnel is connected by a pipeline, and the pipeline is connected to the gas collecting pipe 25. The anaerobic tower 27 is filled with biogas-generating materials, and at the same time, water is introduced from the bottom of the anaerobic tower 27, and water is discharged from the top. The three-phase separation The funnel openings of a plurality of inverted funnels of the device 26 are inserted into the material to a certain depth, so as to collect the biogas produced in the material.

One side of the storage and washing tower 17 is vertically parallel to it and is provided with a floating head pipe 5, and the upper and lower parts of the floating head pipe 5 pass through the upper connecting pipe 4 and the lower connecting pipe 12 and the upper and lower side walls of the storage and washing tower 17 respectively. The lower part is connected; the bottom of the floating head pipe 5 is equipped with a liquid discharge valve 11, and the liquid discharge valve 11 is connected with a hose 10 and a floating head 6, and the flexible pipe 10 and the floating head 6 are placed in the floating head pipe 5; Floating head 6 is made up of floating bottle, buoyancy ring 8, hard tube, and described floating bottle opening is downward, and described hard tube is inserted in described floating bottle from described floating bottle bottleneck and is connected with described floating bottle, so One end of the hard tube exposed from the floating bottle is connected to the flexible tube 10, and the hard tube and the mouth of the floating bottle cannot be sealed so that liquid or gas can enter the hard tube and be inserted into the floating bottle for a certain length. And keep a certain distance from the upper part of the floating bottle.

The pump 15 is installed on the side of the washing liquid pool 13, its inlet communicates with the bottom of the washing liquid pool 13 through the inlet pipe 14, and its outlet is connected to the outlet pipe 16, and the outlet pipe 16 extends from the top of the elevated tank 21. In the elevated tank 21, the pump 15 transports the lye in the washing liquid pool 13 to the elevated tank 21; the top of the storage tower 17 is also equipped with an air supply valve 2 and a vent valve 1.

An upper controller 22 is arranged on the elevated tank 21, and two floating balls are hung on the bottom of the upper controller 22. When the lye liquid level in the elevated tank 21 submerges the two floating balls, the upper controller The device 22 controls the pump 15 to stop running, and when the liquid level in the head tank 21 drops to two floating balls to expose the liquid surface, the upper controller 22 controls the pump 15 to start running again to transport the lye. A lower controller 28 is arranged in the said washing liquid pool 13, and a floating ball is suspended at the bottom of the said lower controller 28, and the liquid level in the said washing liquid pool 13 initially submerges said floating ball, When the liquid level of the lye in the lotion tank 13 drops to make the floating ball emerge from the liquid level, the lower controller 28 controls the pump 15 to stop. In addition, the pump 15 is separately provided with a start-stop switch, which can independently control the start-stop of the pump 15 .

A plurality of nozzles 3 are arranged above the inside of the storage and washing tower 17, and the nozzles 3 are all connected by pipelines. Contact area.

The end of the lower U-shaped pipe 20 connected to the upper U-shaped pipe 24 has a height lower than the height of the two floats at the bottom of the upper controller 22. When the lye liquid level in the elevated tank 21 rises to this When the upper part is connected, lye can flow into the upper U-shaped pipe 24 from the lower U-shaped pipe 20, so that the upper and lower U-shaped pipes 20 form a liquid seal. The end of the gas collecting pipe 25 inserted into the lower U-shaped pipe 20 is located at the upper part of the liquid connecting pipe 23 and is close to the liquid connecting pipe 23, and is located at the lower part of the elevated tank 21 and the tube of the lower U-shaped pipe 20. The diameter is 3-5 times of the liquid connecting pipe 23 pipe diameters, when the lye of the elevated tank 21 flows into the storage and washing tower 17 from the lower U-shaped pipe 20 and the liquid connecting pipe 23, the right section of the lower U-shaped pipe 20 ( In the figure, the liquid level of the lower U-shaped pipe 20 on the right side) will rise to submerge the mouth of the gas collecting pipe 25 and the nozzle of the liquid connecting pipe 23, so that the gas collecting pipe 25 is closed to stop the collection of biogas, and at the same time, the liquid connecting pipe 23 It is closed to prevent biogas from going backwards; the empty end of the upper U-shaped pipe 24 is at the same height as the upper part of the elevated tank 21 .

The device of the utility model is used to collect, purify, store and transport biogas, the steps of which include:

Step 1, open the vent valve 1 of the storage and washing tower 17, close the gas supply valve 2 of the storage and washing tower 17, and open the drain valve 11 at the bottom of the storage and washing tower 17;

Step 2, filling the lotion pool 13 with lye, and the floating ball in the lower controller 28 is submerged by lye;

Step 3, turn on the power supply and start the pump 15, and the pump 15 sends the lye in the lotion pool 13 to the high-level tank 21, and the lye in the high-level tank 21 passes through the lower U-shaped pipe 20 and the liquid connecting pipe successively. 23 and the spray nozzle 3 enter the storage and washing tower 17 and enter the floating head pipe 5 through the lower connecting pipe 12, and simultaneously the lye enters the upper U-shaped pipe 24 through the lower U-shaped pipe 20 to form a liquid seal in the upper and lower U-shaped pipes 20. The liquid seal height of the upper and lower U-shaped pipes 20 must be greater than the minimum depth of the three-phase separator 26 deep into the liquid level in the anaerobic tower 27, so as to prevent the biogas sent by the three-phase separator 26 from the upper and lower U-shaped pipes 20 empty.

The liquid levels of the storage and washing tower 17 and the floating head pipe 5 continue to rise, the floating head 6 in the floating head pipe 5 floats on the liquid surface, the mouth of the floating bottle is located under the liquid surface, and the mouth of the hard pipe in the floating bottle is higher than the liquid level. A certain height of the surface is R; the floating head 6 rises with the liquid level, and when the floating head 6 rises to contact with the top cover of the storage and washing tower 17, the floating head 6 no longer rises, and the liquid level continues to rise. When the hard pipe nozzle, lye enters the hard pipe and flows back to the washing liquid tank 13 through the hose 10 through the drain valve 11, at this time, the float at the bottom of the lower controller 28 leaves the lye level, and the pump 15 stops automatically , and this moment in storage washing tower 17, be full of alkali lye and its inner gas is evacuated; It should be understood that those skilled in the art can make in according to the capacity of head tank 21, the capacity of storage washing tower 17 and the capacity of other parts through accurate calculation When the liquid discharge valve 11 has lye to return to the washing liquid pool 13, the floating ball at the bottom of the controller leaves the lye level.

Step 4, when the pump 15 stops, close the vent valve 1; when the vent valve 1 is closed, the upper air pressure in the storage washing tower 17 and the floating head pipe 5 is equal to atmospheric pressure; according to the general design of the existing anaerobic tower 27, the The biogas collected by the three-phase separator 26 can reach a maximum pressure of 500mm water column. The biogas enters the storage and washing tower 17 through the gas collecting pipe 25, the lower U-shaped pipe 20, the liquid connecting pipe 23 and the nozzle 3, and enters the floating head pipe through the upper connecting pipe 4. 5. Increase the air pressure in the storage and washing tower 17 and the floating head pipe 5; since the mouth of the floating bottle of the floating head 6 is located below the liquid level, and the drain valve 11 connected to the hard pipe and the flexible pipe 10 is in an open state, the floating The pressure in the bottle is equal to the atmospheric pressure, the liquid is pressed into the floating head 6, overflows to the washing liquid pool 13 through the hard tube, the hose 10, and the liquid discharge valve 11, so that the inside of the storage washing tower 17 and the floating head pipe 5 is the outside of the floating head 6 At the beginning, the liquid level inside the floating head 6 does not drop, and the height of the floating head 6 also remains unchanged. When the discharge valve 11 begins to have gas to emerge, the storage and washing tower 17 and the floating head pipe 5 are full of biogas; and carbon dioxide and hydrogen sulfide (H ₂ S) in the biogas are easily soluble in lye, and their specific gravity is larger than that of methane, so they will automatically settle to The liquid level accelerates the dissolution and purification.

Step 5, when using biogas, start the pump 15, and then open the air supply valve 2; the pump 15 sends the lye in the washing liquid pool 13 to the high tank 21, and then passes through the lower U-shaped pipe 20, the liquid connecting pipe 23 and the nozzle 3, Spray onto the surface of the filler 19, and drip down to the bottom of the storage and washing tower 17; the wetted surface of the filler 19 and the surface of the water drop greatly increases the contact area of the alkali liquor and the biogas, and strengthens the reaction of carbon dioxide and hydrogen sulfide (H ₂ S). In the process of dissolution and purification, the lye continuously enters, so that the liquid level in the storage and washing tower 17 rises, the pressure of the biogas rises, the amount of liquid sprayed by the nozzle 3 decreases, and the liquid level of the lower U-shaped pipe 20 rises to submerge the gas collection pipe 25, preventing the backflow of biogas. The high-level tank 21 The liquid level continues to rise until the two floating balls in the head tank 21 are submerged, and the upper controller 22 stops the pump 15 from working; as the gas supply valve 2 continues to supply biogas to the outside, the liquid level of the head tank 21 drops slowly. When the two floats all left the liquid level, the upper controller 22 started the pump 15, and the lye was delivered again for pressurization.

Step 6, when the biogas is used up, turn off the power supply of the gas supply valve 2 and the pump 15, and the liquid discharge valve 11 continues to discharge liquid, so that the liquid level in the head tank 21 continues to drop, and the air pressure in the storage and washing tower 17 continues to drop until the liquid is connected. In the pipe 23 and the bottom U-shaped pipe 20, the mouth of the gas collecting pipe 25 is exposed to the liquid surface, so that the gas collecting pipe 25 is recovered unimpeded, and the biogas is collected again.

Claims (6)

1. a kind of simple collection and purification storing and conveying device of biogas, it is characterised in that: including three phase separator, anaerobic tower, wash Tower, head tank, pump are washed in liquid pool, storage；

The storage is washed tower and is mounted on above the washing lotion pond, and bottom is Chong Die with washing lotion pond upper section, the head tank installation It is washed above tower in the storage, bottom washes tower with the storage by a lower part U-tube and a liquid connecting leg and is connected；

Lower part U-tube one end is connected with the high-order trench bottom, and the other end is connected with one end of a top U-tube, institute State not connected one end emptying of top U-tube；

The three phase separator is mounted on the anaerobic tower, and the three phase separator passes through a gas collecting tube and the lower part U Shape pipe is connect with one end that the top U-tube is connected, and the gas collecting tube is inserted into the lower part U-tube；

The side storage Xi Ta is arranged in parallel with a floating head pipe with it vertically, and floating head pipe top and lower part pass through upper respectively Connecting leg and lower connecting leg store the side wall upper part for washing tower and lower part is connected with described；

The floating head bottom of the tube is equipped with tapping valve, and the tapping valve is connected with hose and floating head, and the hose and floating head are placed in In the floating head pipe；

The pump is mounted on washing lotion pond side, and entrance is communicated by inlet tube with washing lotion bottom of pond portion, and outlet connects out Mouth pipe, the outlet protrude into the head tank from the head tank top；

The storage washes top of tower and is also equipped with steam supply valve and blow valve.

2. a kind of simple collection and purification storing and conveying device of biogas according to claim 1, it is characterised in that: described three Phase separator is made of multiple upside down funnels, and the upside down funnel top is connected to by pipeline, the pipeline and the gas collecting tube phase Even.

3. a kind of simple collection and purification storing and conveying device of biogas according to claim 1, it is characterised in that: described floating Head is made of floating bottle, buoyancy ring, stereoplasm tube, and Open Side Down for the floating bottle, and the stereoplasm tube is from described in the floating bottle bottleneck insertion It is connected in floating bottle and with the floating bottle, the stereoplasm tube exposes floating bottle one end and is connected with the hose.

4. a kind of simple collection and purification storing and conveying device of biogas according to claim 1,2 or 3, it is characterised in that: A upper controller is provided on the head tank, there are two floating balls for the upper controller bottom hung；It is set in the washing lotion pond It is equipped with a lower controller, the lower controller bottom hung has a floating ball；The upper controller and lower controller are controllable Make the start and stop of the pump.

5. a kind of simple collection and purification storing and conveying device of biogas according to claim 4, it is characterised in that: under described One end that portion's U-tube is connected with the top U-tube, height are lower than the height of upper two floating balls in controller bottom；Institute The end that gas collecting tube is inserted into inside the lower part U-tube is stated to be located above the liquid connecting leg and close to liquid connecting leg；The top U-shaped One end and the head tank top of pipe emptying are contour；The caliber of the lower part U-tube is greater than the 3-5 of the liquid connecting leg caliber Times.

6. a kind of simple collection and purification storing and conveying device of biogas according to claim 5, it is characterised in that: the storage It washes tower inner upper and is provided with multiple spray heads, the spray head is connected to by pipeline, and the pipeline is connected with liquid connecting leg, and the storage is washed Filler is set in tower, increases biogas and lye contact area.