JP3102730U - Tower type methane gas generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the area occupied by a facility, to make the whole apparatus compact and to make the piping system the shortest, so that the generated gas recovery efficiency is good and the equipment cost and maintenance cost can be reduced. The work flow line is also shorter and workability is excellent.
SOLUTION: The inside of a tower silo 1 used as a cylindrical tower body is defined by a partition body 7 into a lower stirring tank 8 and an upper equipment storage chamber 19. The inside of the stirring tank 8 is covered with a heat insulating layer 9, and a stirring blade 20 </ b> C of the stirring device 20 is inserted therein. A drive motor 20A of the stirring device 20, a desulfurization device 26, and the like are housed in the equipment housing room 19, and a support net 21 is erected above. A gas bag 22 is provided on the support net 21 and is connected to the stirring tank 8 via a gas supply pipe 23. A gas pipe 27 for supplying methane gas to an external device is connected to the gas bag 22.
[Selection diagram] Fig. 1

Description

  The present invention relates to a methane gas generator that generates methane gas from manure discharged from a barn or the like, and more particularly to a tower-type methane gas generator that can reduce the occupied area of the facility as much as possible.

In recent years, from the viewpoint of preventing environmental pollution and global warming caused by fossil fuels, and the effective use of livestock manure discharged in large quantities due to the expansion of livestock, the active use of methane gas (biogas) using manure as a raw material Is being considered. Conventionally, as this type of methane gas generator, a storage tank, a raw water tank, a digestion tank (fermentation tank), and a gas holder are juxtaposed on the ground as disclosed in, for example, Japanese Patent Publication No. 63-29600. There is a configuration in which these are connected by piping. In addition, a methane gas generator having a configuration in which a primary fermenter, a secondary fermenter, a desulfurization tower, and the like with a built-in stirring device are arranged on the ground, a gas bag is arranged on the primary fermenter, and these components are connected by piping. Are known.
JP-B-63-29600

  Further, in the above publication, a water tank is provided around the outside of the digestion tank, which is filled with water, a liquid such as a desorbing liquid, and a gas holder is lifted up and down on the upper part of the digestion tank so as to be sealed by the liquid. There is disclosed a methane generating apparatus in which the generated methane gas is configured to be supplied to the gas holder and the outside of the system through a pipe in a water tank via a water seal safety device, thereby reducing the size of the entire apparatus. .

  However, all of the above-mentioned prior arts have a configuration in which the components are arranged side by side on the ground, so a large installation area is required, the equipment becomes large, and the distance of the piping system connecting the components is long. Therefore, it is difficult for individual dairy farmers to install the equipment at their own expense. Further, there is a disadvantage that work efficiency is poor due to long work flow lines. Furthermore, many drive pumps are required to move liquids such as manure and methane gas between the components, and there is a disadvantage that the configuration of the apparatus is complicated.

  The present invention has been made in view of the above-described drawbacks of the prior art, and can minimize the occupied area of the facility, thereby making it possible to effectively use the site, and arranging the components in the vertical direction without wasting piping. The tower type can be shortened, and the whole equipment can be compactly integrated, so that the equipment cost and maintenance cost can be reduced, and the work flow line can be shortened as much as possible, so the workability is excellent. It is an object to provide a methane gas generator.

  Means of the present invention configured to solve the above-described problem are a covered cylindrical tower body erected on a site and a manure that is defined and supplied below the cylindrical tower body by a partition body. A fermenter for fermenting, a device-accommodating chamber defined on the upper side of the tubular tower by the partition body, and a fermenter disposed above the device-accommodating chamber through a gas supply pipe. And a gas pipe connected to the gas bag and supplying stored methane gas to an external device.

  By using a tower silo for the cylindrical tower, the tower silo that is idle can be effectively used.

  Further, the fermenter may be provided with a stirring blade driven by a stirring device provided in a chamber for accommodating the apparatus and the like.

  Further, the fermenter may be provided with an overflow pipe for maintaining the supplied manure at a predetermined amount.

  Further, the gas bag may be supported by a support net provided on the cylindrical tower.

Since the present invention is configured as described in detail above, it has the following effects.
(1) The agitating tank and the storage room for equipment etc. are vertically defined in the cylindrical tower body, and the gas bag is also stored, so the facility occupation area can be minimized and the site can be used effectively. Since the components can be arranged without waste, the entire apparatus can be compactly integrated. Therefore, it can be used by individual dairymen.
(2) Stirring tanks, equipment storage chambers, and gas bags are arranged in a straight vertical direction in the cylindrical tower body, so that the working flow line can be made the shortest distance, and the piping system can be made the shortest distance, thus improving work efficiency. In addition, equipment costs can be reduced.
(3) As described above, the agitation tank, the equipment accommodation chamber and the gas bag are arranged in a straight vertical direction, so that pumps are not required for methane gas recovery and the like, and the apparatus can be simplified.
(4) By using a tower silo for the cylindrical tower, the idled tower silo can be used effectively, and the cost of constructing a new cylindrical tower can be saved.
(5) When a tower silo is used for the cylindrical tower, a cowshed, manure storage tank, and the like necessary for generating methane gas are installed around the tower, so that the tower silo and peripheral facilities can be used efficiently. .
(6) Since the gas bag is configured to be supported by the support net provided in the cylindrical tower, the gas bag can be stably held on the support net by utilizing the specific gravity of the stored methane gas.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawing, reference numeral 1 denotes a tower silo used as a cylindrical tower body. The tower silo 1 includes a concrete base 2, a tower section 3 made of a steel plate cylinder erected on the base 2, and the tower And a dome-shaped canopy portion 4 made of a steel plate that covers the upper portion of the portion 3. The tower silo 1 is provided with an entrance / exit 5 and a ventilation fan 6 which communicate with a later-described equipment chamber 19 in the height direction, and a spiral staircase is provided on the outside from the ground to the upper end of the canopy portion 4. Here, this tower silo 1 uses an existing tower silo which is installed by a dairy farmer to prepare silage as feed for cattle, but is idle.

  Numeral 7 denotes a partition provided in the height direction in the tower silo 1. The partition 7 is installed by being mounted on stabilizers 11, 11,... The lower side in the silo 1 is defined by the stirring tank 8, and the upper side is defined by the equipment room 19.

  The stirring tank 8 formed on the lower side in the tower silo 1 by the partition member 7 has an inner surface, that is, an upper surface 2A of the base 2, an inner wall surface 3A of the tower portion 3, and a lower surface 7A of the partition member 7, such as glass wool or urethane foam. The bottom heat insulating portion 9A is provided with a hot water heater 10 for heating the inside of the stirring tank 8 in the bottom heat insulating portion 9A. , Are stabilizers for enhancing the stirring effect, and a plurality of the stabilizers 11, 11,... Are provided on the inner surface of the stirring tank 8 so as to be spaced apart in the circumferential direction. A settling discharge port 12 is formed in the center of the bottom of the stirring tank 8 from the heat insulating tank 9 to the base 2, and a settling discharge pipe 13 connected to the settling discharge port 12 communicates with the waste liquid storage tank A. .

  Reference numeral 14 denotes a manure supply pipe for supplying manure to the stirring tank 8. The manure supply pipe 14 has a base end 14A connected to a carry-out pump C installed in a manure storage tank B, and a distal end 14B inside the stirring tank 8. It is open above. Reference numeral 15 denotes an overflow tube for keeping a constant amount of manure supplied from the manure supply tube 14 to the stirring tank 8. The overflow pipe 15 has an inflow vertical pipe 16 having a lower end 16A opened toward the bottom of the stirring tank 8 and an upper end 16B protruding into the equipment chamber 19 serving as a closed inspection port, and a lower end 17A serving as the waste liquid storage tank A. And the upper end 17B protruding into the equipment chamber 19 communicates with the outflow vertical pipe 17 and the inflow vertical pipe 16 and the outflow vertical pipe 17 at a position close to the upper part of the stirring tank 8 as a closed inspection port. The excess manure in the stirring tank 8 is discharged from the communication pipe 18 to the waste liquid storage tank A via the outflow vertical pipe 17.

  On the other hand, reference numeral 19 denotes an equipment etc. accommodation room defined in the tower silo 1 from the middle in the height direction to the upper part by the partition body 7. Reference numeral 20 denotes a manure stirring device. The stirring device 20 is provided on the electric motor 20A installed in the equipment chamber 19, a drive shaft 20B protruding into the stirring tank 8 via the partition member 7, and the drive shaft 20. It is composed of stirring blades 20C, 20C. Reference numeral 21 denotes a support net installed on the upper side of the equipment accommodation room 19. The support net 21 is formed by knitting, for example, chemical fibers or the like, and is constructed by engaging the outer peripheral edge to the tower 3. Reference numeral 22 denotes a gas bag provided on the support net 21. The gas bag 22 is formed of a sheet material having elasticity and impact resistance such as, for example, high elasticity polyethylene. It is connected to the stirring tank 8. In addition, a discharge pipe 24 is provided at the upper end of the gas bag 22 and penetrates the canopy part 4 and opens to the outside. The discharge pipe 24 is provided with a safety valve 25.

  Reference numeral 26 denotes a desulfurization device for removing sulfide in methane gas flowing from the stirring tank 8 into the gas bag 22. The desulfurization device 26 is, for example, a device in which iron waste is stored in a gas contact container, and is located in the equipment etc. storage room 19 and connected to the middle of the gas supply pipe 23. Reference numeral 27 denotes a gas pipe for supplying methane gas stored in the gas bag 22 to an external device, for example, a gas engine or the like, via a pressurized pump (not shown). It is led out of the tower silo 1 through the layer 9. Reference numeral 28 denotes a drain pipe communicating from the gas bag 22 to the stirring tank 8.

  The tower-type methane gas generator according to the present embodiment has the above-described configuration. Next, the operation thereof will be described. First, the surrounding facilities will be described. A is a waste liquid storage tank, B is a manure storage tank for storing manure discharged from a cowshed, and the manure storage tank B is provided with a discharge pump C connected to the manure supply pipe 14. It is. D is a gas engine type generator, which is connected to the gas pipe 27.

  First, the manure discharged from the barn and flowing into the manure storage tank B is sent to the stirring tank 8 via the manure supply pipe 14 by the carry-out pump C. In the stirring tank 8, the manure is stirred by the stirring device 20. Since a plurality of stabilizers 11, 11,... Protrude from the stirring tank 8, it is possible to stir the manure uniformly and efficiently. In winter, the stirring tank 8 is heated to about 15 ° C. by the hot water heater 10 to increase the fermentation efficiency. The accumulated amount of manure supplied to the stirring tank 8 is maintained at a constant level without providing a liquid level sensor or a pump by discharging excess manure through the overflow pipe 15 to the waste liquid storage tank A. I have.

  The methane gas generated in the stirring tank 8 rises through the gas supply pipe 23 and flows into the gas bag 22, while the sulfide in the methane gas is removed by the desulfurization device 26 during this time. On the other hand, the methane gas stored in the gas bag 22 is supplied to an external device D such as a gas engine generator through a gas pipe 27 by a pressure pump. The drain remaining in the gas bag 22 is discharged straight to the stirring tank 8 via the drain pipe 28.

  The basic operation of the methane gas generator described above is not different from that of the conventional method. However, since the gas bag 22 containing methane gas is arranged right above the stirring tank 8, a dedicated power source such as a pump is used. The methane gas can be recovered smoothly even without it. Further, the drain in the gas bag 22 can be quickly discharged to the stirring tank 8 by the drain pipe 28. Moreover, since the inspection ports of the overflow pipe 15, the drive motor 20A of the stirring device 20, and the devices such as the desulfurization device 26 are housed in the device housing room 19, the inspection work of these devices can be performed efficiently. it can.

  Further, according to the present embodiment, it is not necessary to newly install a cylindrical tower body by using the tower silo 1 which is an idle facility for the cylindrical tower body, so that equipment costs can be reduced. Moreover. Since the tower silo 1 is located near the cowshed from which manure is discharged and the manure storage tank, there is an advantage that the work flow line is the shortest distance and the work efficiency can be improved. Further, since the inside of the tower silo 1 is vertically defined to form the stirring tank 8 and the equipment room 19 in the vertical direction, and the gas bag 22 is also housed therein, the facility occupation area on the site can be minimized. In addition, since each piping system can be set to the shortest distance, equipment costs and maintenance costs can be reduced.

It is a sectional view of a tower type methane gas generator concerning an embodiment of the present invention. It is explanatory drawing which shows the structure of a tower type methane gas generator and peripheral facilities.

Explanation of reference numerals

1 tower silo (tubular tower)
7 Partition body 8 Stirring tank 15 Overflow pipe 19 Equipment etc. accommodation room 21 Support net 22 Gas bag 23 Gas supply pipe 27 Gas pipe

Claims (5)

  A covered cylindrical tower body erected on the site, a fermenter that is defined below the tubular tower body by a partition body and ferments the supplied manure, and the partition body inside the cylindrical tower body. An equipment storage chamber defined on the upper side, a gas bag disposed above the equipment storage chamber and communicating with the fermenter via a gas supply pipe, and methane gas connected to and stored in the gas bag. And a gas pipe for supplying methane gas to external equipment.   The tower type methane gas generator according to claim 1, wherein a tower silo is used for the cylindrical tower body.   The tower-type methane gas generator according to claim 1, wherein the fermenter is provided with a stirring blade driven by a stirring device provided in a chamber for accommodating the equipment and the like.   The tower type methane gas generator according to claim 1, wherein the fermenter is provided with an overflow pipe for maintaining the supplied manure at a predetermined amount.   The tower type methane gas generator according to claim 1, wherein the gas bag is supported by a support net provided on the cylindrical tower body.

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