CN209989385U - Simple device for preparing biogas from potato residues - Google Patents
Simple device for preparing biogas from potato residues Download PDFInfo
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- CN209989385U CN209989385U CN201920721101.6U CN201920721101U CN209989385U CN 209989385 U CN209989385 U CN 209989385U CN 201920721101 U CN201920721101 U CN 201920721101U CN 209989385 U CN209989385 U CN 209989385U
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Abstract
A simple device for preparing biogas from potato residue comprises a gas storage washing tower, an elevated tank, a washing liquid tank, a pump, a floating head and a potato residue bag. The gas storage washing tower is arranged above the washing liquid pool. An air supply valve, an air release valve and a gas collecting valve are mounted on the side wall of the washing tower, a liquid discharging valve and a gas collecting and liquid discharging valve are arranged at the bottom of the washing tower, the gas collecting valve is connected with the potato residue bag through a gas collecting pipe, and alkali liquor is injected into the washing liquid tank. The elevated tank is arranged at the upper part of the gas storage washing tower, and the bottom of the elevated tank is communicated with the gas storage washing tower through a connecting pipe. The gas collection and liquid discharge valve is connected with a floating head through a hose, and the floating head and the hose are positioned inside the gas storage washing tower; the washing liquid tank is characterized in that a pump is installed on the outer side of the washing liquid tank, a pump inlet is connected with the inner part of the washing liquid tank through a liquid conveying pipe, the liquid conveying pipe is connected to the pump outlet, the upper part of the liquid conveying pipe extends into the elevated tank from the upper part of the elevated tank, and alkali liquor in the washing liquid tank is conveyed into the elevated tank by the pump.
Description
Technical Field
The utility model belongs to the field of marsh gas preparation, in particular to a simple device for preparing marsh gas from potato dregs.
Background
China is the first major country of tuber crop production in the world and comprises sweet potatoes, potatoes and cassava. The three potatoes are wide in distribution and large in yield, and the annual yield reaches nearly 2 hundred million tons. The potato tuber is applied to produce starch and various fermentation products every year, and the produced by-product, namely potato residue resource, reaches about 1 hundred million tons. The potato residue has relatively high crude protein content, and can be directly fed to animals, but still contains certain toxin. The sweet potato residue and the cassava residue have obvious nutritional defects, namely low crude protein content, low direct feeding nutritional value and slow growth of animals. The potato residue is organic waste and can be used as a biogas raw material. However, the main component of the fiber is crude fiber, the carbon content is high, and the carbon-nitrogen ratio is generally 30: 1 or more. Therefore, the potato residue raw material is used as the biogas, and the gas production speed is slower if the pretreatment is not carried out. Because the potatoes are difficult to keep fresh, the processing period is only one more month. Starch is extracted from a large amount of potatoes by mechanical operation, and the process can be finished in about one month. A large amount of potato dregs are used as biogas in a short period, huge capital needs to be added to build a large-capacity biogas pool, raw materials cannot be supplied for a long time, and the biogas cannot be produced for a long time. The potato residue is generally in a pulp shape, is not treated in many places, is directly abandoned in mountain side ditches near processing plants or is dragged away by money requesters, is poured into rivers, water channels and fields, and is treated in the next spring and summer when the temperature rises and the generated odor affects the range of about 1 kilometer around, so that the treatment wastes raw materials and can generate adverse effect on the environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low-cost simple device for preparing biogas from potato dregs. The utility model is characterized in that the agricultural film is used for wrapping the pulpy potato dregs mixed with the activated sludge at the low concave part, and the generated methane is collected, washed and stored by a micro-pressure liquid discharge method for deep processing of starch.
In order to reach the purpose, the utility model adopts the following technical scheme:
a simple device for preparing biogas from potato residue comprises a gas storage washing tower, an elevated tank, a washing liquid tank, a pump, a floating head and a potato residue bag;
the gas storage washing tower is arranged above the washing liquid pool, and the bottom of the gas storage washing tower is partially overlapped with the upper part of the washing liquid pool; an emptying valve and a gas collecting valve are arranged at the upper part of the gas storage washing tower, the gas collecting valve is connected with the potato dreg package through a gas collecting pipe and extends into the potato dreg package, potato dreg slurry doped with activated sludge is placed in the potato dreg package, and alkali liquor is injected into the washing liquid tank;
the elevated tank is arranged at the upper part of the gas storage washing tower, and the bottom of the elevated tank is communicated with the upper part of the side wall of the gas storage washing tower through a connecting pipe; a liquid discharge valve and a gas and liquid collection valve are arranged at the overlapping part of the bottom of the gas storage washing tower and the upper part of the washing liquid pool, the gas and liquid collection valve is connected with a floating head through a hose, and the floating head and the hose are positioned inside the gas storage washing tower;
a pump is arranged on the outer side of the bottom of the washing liquid pool, the inlet of the pump is connected with the inside of the washing liquid pool through a liquid conveying pipe, the outlet of the pump is connected with the liquid conveying pipe, and the upper part of the liquid conveying pipe extends into the elevated tank from the upper part of the elevated tank;
and an air supply valve is arranged at the upper part of the side wall of the washing tower.
Preferably, the gas collecting pipe extends into the potato residue bag, and a plurality of through holes are distributed on the side wall of the gas collecting pipe.
Furthermore, a liquid level control switch with two floating balls is installed above the head tank, and the liquid level control switch can control the starting and stopping of the pump.
Furthermore, the connecting pipe is a U-shaped pipe, and one end of the connecting pipe connected with the bottom of the elevated tank is higher than one end of the connecting pipe connected with the upper part of the side wall of the gas storage washing tower.
Furthermore, a plurality of spray headers are uniformly arranged above the inside of the gas storage washing tower, and one end of the connecting pipe, which is connected with the upper part of the side wall of the gas storage washing tower, extends into the inside of the gas storage washing tower and is respectively connected with the plurality of spray headers.
Furthermore, a partition plate is arranged in the gas storage washing tower, a plurality of through holes are uniformly distributed in the partition plate, the inside of the gas storage washing tower is divided into a left part and a right part by the partition plate, and the floating head and the hose are positioned on one side of the partition plate.
Furthermore, the floating head is composed of a floating bottle, a hard pipe and a plurality of floats, the floats are arranged on the outer wall of the floating bottle, the hard pipe is inserted into the floating bottle from the mouth of the floating bottle and is connected with the floating bottle, the mouth of the floating bottle faces downwards, and the hard pipe is connected with the hose.
Furthermore, a filler and a liquid level meter are arranged on the other side of the partition plate adjacent to the floating head and the hose in the gas storage washing tower, and a manhole is further arranged on the side wall of the gas storage washing tower.
The utility model has the advantages that: the utility model has the advantages of simple integral structure, make full use of originally need dumped potato sediment to carry out marsh gas preparation and collection, simultaneously the utility model discloses with potato sediment preparation marsh gas, marsh gas is collected, marsh gas washs and the collection of marsh gas pressure boost is carried in an organic whole, whole in-process does not need extra energy consumption except the operation of pump basically, reaches energy-concerving and environment-protective.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the overall structure of the simple device for preparing biogas from potato dregs;
in the figure: 1 gas collection valve, 2 air release valve, 3 air supply valve, 4 floating head, 5 floater, 6 hose, 7 liquid discharge valve, 8 pump, 9 gas storage washing tower, 10 gas collection liquid discharge valve, 11 liquid washing pool, 12 manhole, 13 liquid level meter, 14 filler, 15 connecting pipe, 16 spray head, 17 elevated tank, 18 liquid level control switch, 19 potato dregs package.
Detailed Description
Example (b):
referring to fig. 1, a simple device for preparing biogas from potato pulp comprises a gas storage washing tower, an elevated tank, a washing liquid tank, a pump, a floating head and a potato pulp bag.
The gas storage washing tower is arranged above the washing liquid pool, the bottom of the gas storage washing tower is partially overlapped with the upper part of the washing liquid pool, and the overlapped part of the washing liquid pool is open. The potato residue washing device is characterized in that an air supply valve is installed on the upper portion of the side wall of the washing tower, an emptying valve and a gas collecting valve are arranged on the upper portion of the gas storage washing tower, the gas collecting valve is connected with the potato residue bag through a gas collecting pipe and stretches into the potato residue bag, preferably, the gas collecting pipe stretches into the part of the potato residue bag, a plurality of through holes are distributed in the side wall of the gas collecting valve, the gas collecting pipe is placed through the plurality of through holes and is blocked by potato residue slurry in the potato residue bag, meanwhile, the air inlet area of the gas collecting pipe can be increased, and biogas collection is facilitated. The potato residue bag is internally provided with potato residue slurry doped with activated sludge, preferably the weight ratio of the activated sludge is 0.1-10%, and the gas production rate of the potato residue slurry generating methane under the action of the activated sludge is not greatly changed within the ratio range, so that the relatively stable gas production rate can be ensured. Meanwhile, alkali liquor is injected into the washing liquid tank.
The elevated tank is arranged on the upper part of the gas storage washing tower, the bottom of the elevated tank is communicated with the upper part of the side wall of the gas storage washing tower through a connecting pipe, preferably, the connecting pipe is a U-shaped pipe, one end of the connecting pipe, which is connected with the bottom of the elevated tank, is higher than one end of the connecting pipe, which is connected with the upper part of the side wall of the gas storage washing tower, and the connecting pipe is designed into a U-shaped pipe and can play a role of liquid seal when alkali liquor is injected into the connecting pipe.
A liquid discharge valve and a gas and liquid collection valve are arranged at the overlapping part of the bottom of the gas storage washing tower and the upper part of the washing liquid pool, the gas and liquid collection valve is connected with a floating head through a hose, and the floating head and the hose are positioned inside the gas storage washing tower; the floating head is composed of a floating bottle, a hard pipe and a plurality of floaters, the floaters are installed on the outer wall of the floating bottle, one end of the hard pipe is inserted into the floating bottle through the mouth of the floating bottle and is connected with the floating bottle, the mouth of the floating bottle faces downwards, and the other end of the hard pipe is connected with the hose. The hard pipe is inserted into the floating bottle for a certain length, the top end of the hard pipe is a certain distance away from the upper part of the floating bottle, when liquid enters the gas storage washing tower, the floating head can rise, and water can not enter the hard pipe because the hard pipe is higher than the liquid level; when the floating head rises to touch the top of the gas storage washing tower, the liquid level continues to rise, liquid can enter the floating bottle along the opening of the floating bottle and then submerge the mouth of the hard pipe, and the liquid can enter the hard pipe and then enter the hose to be discharged through the gas collection and discharge valve.
The pump is installed in the lotion bottom outside, the pump entry passes through the transfer line and links to each other with the lotion pond is inside, the transfer line is connected to the pump export, transfer line upper portion is followed elevated tank upper portion stretches into in the elevated tank, the pump is carried the alkali lye in the lotion pond in the elevated tank. The alkali liquor in the elevated tank flows back to the gas storage washing tower through the bottom connecting pipe, the utility model discloses in design the delivery flow of pump is greater than the flow of connecting pipe.
A liquid level control switch with two floating balls is arranged above the elevated tank, when the pump conveys the alkali liquor in the washing liquid tank to the elevated tank, the liquid level of the alkali liquor in the elevated tank rises, and when the alkali liquor in the elevated tank submerges the two floating balls, the liquid level control switch controls the pump to stop; the alkali liquor flows back to the gas storage washing tower through the connecting pipe, the liquid level in the elevated tank is reduced, when the two floating balls are exposed out of the liquid level, the liquid level control switch controls the pump to be started, and then the alkali liquor in the washing liquid tank is sent to the elevated tank.
The inside top of gas storage scrubbing tower evenly is provided with a plurality of shower head, the connecting pipe is connected the one end on gas storage scrubbing tower lateral wall upper portion stretches into inside the gas storage scrubbing tower respectively with a plurality of shower head links to each other, and when alkali lye is followed elevated tank can wash the marsh gas in the gas storage scrubbing tower when flowing to the shower head through the connecting pipe, takes out carbon monoxide, hydrogen sulfide wherein.
Still be provided with the baffle in the gas storage scrubbing tower, evenly distributed has a plurality of through-holes on the baffle, the baffle will gas storage scrubbing tower is inside to be divided into two parts about, floating head and hose are located baffle one side.
And a filler and a liquid level meter are arranged on the other side of the partition plate adjacent to the floating head and the hose in the gas storage washing tower, and the filler in the gas storage washing tower increases the contact area of the methane and the alkali liquor sprayed by the top spray head, so that the cleaning efficiency is improved. The liquid level meter is arranged to facilitate observation of the liquid level in the tower. Simultaneously, the gas storage scrubbing tower lateral wall still is provided with the manhole, conveniently carries out the interior maintenance of later stage gas storage scrubbing tower.
The method for preparing the methane by using the utility model comprises the following steps:
step one, unfolding a cylindrical agricultural film, placing the film in a low recess near a starch factory, and binding one end of the cylindrical agricultural film by using a rope to form a potato residue bag; the potato residue bag is covered with a light-tight material, so that ultraviolet rays in sunlight are prevented from accelerating the aging of the agricultural film.
Step two, potato pulp is poured into the potato pulp bag, and 0.1-10% of activated sludge is selectively added to control the speed of methane production so as to enable the gas production peak period to coincide with the energy consumption period of starch deep processing;
thirdly, extending the part of the side wall of the gas collecting pipe, which is provided with the through hole, into the potato dreg packet, and fixing the part on the surface of the potato dreg slurry in the potato dreg packet; tying the potato residue bag to the non-hole part of the gas collecting pipe by using the device;
step four, as time increases, methane begins to be generated in the potato dreg package, the potato dreg package expands, alkali liquor is injected into the washing liquid tank at the moment, then the air supply valve, the gas collecting valve and the liquid discharging valve are closed, the air release valve and the gas collecting and liquid discharging valve are opened, and then the pump is started;
step five, the liquid enters the gas storage washing tower, so that the floating head floats on the liquid level, when the liquid level rises to the point that the floating head contacts the tower top, the floating head does not rise any more, and the liquid level continues to rise; when the liquid level rises to exceed the hard pipe orifice in the floating bottle, the liquid flows out through the hose and the gas-collecting drain valve through the hard pipe orifice in the floating bottle; at the moment, the liquid flushing in the gas storage washing tower is finished, the pump is stopped, the emptying valve is closed, the gas collecting valve is opened, the methane in the potato residue bag accumulates to generate certain pressure, the methane enters the gas storage washing tower through the gas collecting pipe and the gas collecting valve, the liquid in the tower is discharged through the gas collecting and liquid discharging pipe, the methane is continuously collected in the gas storage washing tower, and after the tower is filled with the methane, the redundant methane is emptied through the gas collecting and liquid discharging valve;
before using the biogas, firstly closing the gas collecting valve and the gas collecting and discharging valve, then starting the pump, conveying the alkali liquor in the washing liquid tank into the elevated tank by the pump, enabling the alkali liquor in the elevated tank to enter the gas storage washing tower through a connecting pipe, spraying the alkali liquor by the spray head, and washing the biogas to remove carbon dioxide and hydrogen sulfide in the biogas; meanwhile, the pressure of the methane rises continuously along with the continuous rise of the liquid level in the gas storage washing tower, when the liquid level in the head tank rises to submerge two floating balls of the liquid level control switch, the liquid level control switch controls the pump to stop, the methane is increased, and at the moment, the gas supply valve can be opened to use the methane; when the pressure of the biogas in the gas storage washing tower is reduced, the alkali liquor in the head tank flows into the gas storage washing tower again, the liquid level in the head tank is reduced to the level when the two floating balls are exposed out of the liquid level, the liquid level control switch controls the pump to be started, and then the biogas is pressurized again;
and step seven, when the biogas is stopped, firstly cutting off the power supply of the pump, then closing the gas supply valve, then opening the gas collection and liquid discharge valve, discharging liquid in the gas collection and liquid discharge pipe, releasing pressure, finally opening the gas collection valve, enabling the biogas to enter the gas storage washing tower, discharging liquid in the gas collection and liquid discharge pipe, continuously collecting the biogas in the gas storage washing tower until the tower is filled with the biogas.
The steps are repeated in this way, so that the whole process of preparing, collecting, cleaning and pressurizing conveying of the methane can be realized.
Claims (8)
1. Simple and easy potato sediment preparation marsh gas's device which characterized in that: comprises a gas storage washing tower, an elevated tank, a washing liquid pool, a pump, a floating head and a potato residue bag;
the gas storage washing tower is arranged above the washing liquid pool, and the bottom of the gas storage washing tower is partially overlapped with the upper part of the washing liquid pool; an emptying valve and a gas collecting valve are arranged at the upper part of the gas storage washing tower, the gas collecting valve is connected with the potato dreg package through a gas collecting pipe and extends into the potato dreg package, potato dreg slurry doped with activated sludge is placed in the potato dreg package, and alkali liquor is injected into the washing liquid tank;
the elevated tank is arranged at the upper part of the gas storage washing tower, and the bottom of the elevated tank is communicated with the upper part of the side wall of the gas storage washing tower through a connecting pipe; a liquid discharge valve and a gas and liquid collection valve are arranged at the overlapping part of the bottom of the gas storage washing tower and the upper part of the washing liquid pool, the gas and liquid collection valve is connected with a floating head through a hose, and the floating head and the hose are positioned inside the gas storage washing tower;
a pump is arranged on the outer side of the bottom of the washing liquid pool, the inlet of the pump is connected with the inside of the washing liquid pool through a liquid conveying pipe, the outlet of the pump is connected with the liquid conveying pipe, and the upper part of the liquid conveying pipe extends into the elevated tank from the upper part of the elevated tank;
and an air supply valve is arranged at the upper part of the side wall of the washing tower.
2. The simple device for preparing biogas from potato residue as claimed in claim 1, which is characterized in that: the gas collecting pipe extends into the potato residue bag, and a plurality of through holes are distributed on the side wall of the gas collecting pipe.
3. The simple device for preparing biogas from potato residue as claimed in claim 1, which is characterized in that: and a liquid level control switch with two floating balls is installed above the elevated tank, and the liquid level control switch can control the start and stop of the pump.
4. The simple device for preparing biogas from potato residue as claimed in claim 1, which is characterized in that: the connecting pipe is a U-shaped pipe, and one end of the connecting pipe, which is connected with the bottom of the elevated tank, is higher than one end of the connecting pipe, which is connected with the upper part of the side wall of the gas storage washing tower.
5. The simple device for preparing biogas from potato residue as claimed in claim 1, which is characterized in that: the gas storage washing tower is characterized in that a plurality of spray heads are uniformly arranged above the inner part of the gas storage washing tower, and the connecting pipe is connected with one end of the upper part of the side wall of the gas storage washing tower and extends into the gas storage washing tower and is respectively connected with the plurality of spray heads.
6. The simple device for preparing biogas from potato residue as claimed in claim 1 or 5, which is characterized in that: the gas storage washing tower is characterized in that a partition plate is arranged in the gas storage washing tower, a plurality of through holes are uniformly distributed in the partition plate, the inside of the gas storage washing tower is divided into a left part and a right part by the partition plate, and the floating head and the hose are located on one side of the partition plate.
7. The simple device for preparing biogas from potato residue as claimed in claim 6, which is characterized in that: and a filler and a liquid level meter are arranged on the other side of the partition plate adjacent to the floating head and the hose in the gas storage washing tower, and a manhole is further arranged on the side wall of the gas storage washing tower.
8. The simple device for preparing biogas from potato residue as claimed in claim 1, which is characterized in that: the floating head is composed of a floating bottle, a hard pipe and a plurality of floaters, the floaters are installed on the outer wall of the floating bottle, the hard pipe is inserted into the floating bottle from the bottle opening of the floating bottle and is connected with the floating bottle, the bottle opening of the floating bottle faces downwards, and the hard pipe is connected with the hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920721101.6U CN209989385U (en) | 2019-05-20 | 2019-05-20 | Simple device for preparing biogas from potato residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920721101.6U CN209989385U (en) | 2019-05-20 | 2019-05-20 | Simple device for preparing biogas from potato residues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209989385U true CN209989385U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920721101.6U Expired - Fee Related CN209989385U (en) | 2019-05-20 | 2019-05-20 | Simple device for preparing biogas from potato residues |
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| Country | Link |
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| CN (1) | CN209989385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055165A (en) * | 2019-05-20 | 2019-07-26 | 黄冈师范学院 | Simple potato slag prepares the device and method of biogas |
-
2019
- 2019-05-20 CN CN201920721101.6U patent/CN209989385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055165A (en) * | 2019-05-20 | 2019-07-26 | 黄冈师范学院 | Simple potato slag prepares the device and method of biogas |
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Granted publication date: 20200124 |
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