CN201006869Y - Inclined tube device for generating gas from ecological waste - Google Patents

Abstract

The utility model is a slope tube type device which utilizes ecological waste to generate gas. It utilizes the slope tube type fermentation reaction tank and the anaerobic methane bacteria attached to the bottom, cooperates with solar energy and biogas to assist heating, and carries out temperature adjustment control to heat the fermentation material. Liquid and make it circulate back, produce anaerobic fermentation reaction, catalyze biological decomposition, negative pressure purification and recovery of combustible gas, and use sludge pump to send the decomposed waste liquid and waste residue to farmland or greenhouse through the discharge regulating valve. It can strengthen the catalytic biodecomposition of crop straw, weeds, human and animal manure, domestic garbage, waste residues from various processing and production processes, sewage, waste, etc., so that they can be converted into combustible gases (methane, biogas) according to industrial conditions. And the fermentation waste liquid and waste residue are used to plant economic crops, fast-growing plants or pasture. This kind of energy is not restricted by resource and environmental conditions, and has the advantages of easy availability of raw materials, low cost, low pollution, safe production, and large market demand.

Description

Inclined tube device for generating gas from ecological waste

technical field

The utility model relates to a device for generating gas by utilizing ecological waste materials, which belongs to the field of decomposition and recovery of ecological waste materials. The utility model adopts slope tube reaction pools and anaerobic fermentation to decompose waste materials and recycle combustible gases.

Background technique

At present, natural gas, coal, oil, water, nuclear energy and other energy sources play an extremely important role in the national economy. However, with the massive mining, some resources have withered more seriously, including: some coal mines have been hollowed out, and the yield of oil fields has declined; while the long-distance transportation of natural gas, the development of nuclear energy, etc., still require huge investment and the development of more advanced technical means.

In addition, some operations use biogas as an energy source. However, traditional biogas is produced under normal temperature and pressure natural environment conditions. Due to restrictions on temperature, pressure, and material ratio, it is far from the requirements of industrial gas production.

Biogas fermentation is divided into three temperature stages: high, medium, and normal. The fermentation trend is: it changes with the change of temperature. The higher the temperature is in the range suitable for fermentation, the more active the microorganisms and the more gas produced, and vice versa. At present, the biogas digesters often built in rural areas are only enough for cooking and lighting, and produce little or no gas in winter when it is cold. The waste liquid and waste residue used for fermentation to produce biogas are also restricted by the season and the time when crops need fertilizer. The utilization of biogas is still in the stage of miniaturization. In addition, there is a domestic technology of using distiller's grains to produce biogas, but the raw material is relatively single, which cannot solve the problem of ecological waste disposal.

In foreign countries, there is also the technology of using cow manure and waste from the food industry to produce biogas and generate electricity for heating. In the small cogeneration plant in Aberg, Denmark, the biogas produced is not only generated by the small power generation device installed in the station and the waste heat is used for the insulation of the biogas digester, but the remaining biogas is sent to the small cogeneration device through pipelines to provide heat for the town. But its investment is huge, and this model is difficult to implement in the vast rural areas of our country.

What is being promoted in China is also a gasifier that uses straw materials to burn, that is, oxygen-controlled combustion to produce combustible gas carbon monoxide (CO). But oxygen-controlled oxidation will be ignited and burned, so that the nutritional elements and organic matter in the stalk will be destroyed in the combustion, especially the sulfide will become sulfur dioxide and become polluting gas. Controlled oxygen combustion gasification also has the problem of precipitation pollution of methanol, aldehydes, and organic acids.

Utility model content

In order to solve the above problems and provide an eco-waste recovery device suitable for rural applications in my country, with low pollution and high decomposition efficiency, the utility model proposes a slope tube-type device that utilizes eco-waste to generate gas.

The utility model uses ecological waste to generate gas with a slope tube device, which includes a fermentation reaction tank with an automatic suction inlet, a heating device, a material discharge device and a gas outlet. A ramp pipe connected to the feed port; a heating pipe connected to the heating device connected to the fermentation reaction tank; a barrier wall is also provided in the fermentation reaction tank, a feed liquid heating tank is formed between the two barrier walls, and a communication pipe is opened on the barrier wall. It is equipped with a feed liquid check valve.

Wherein, the angle formed by the slope tube and the horizontal plane is preferably 20°-40°; the fermentation reaction tank adopts anaerobic fermentation, and anaerobic methane bacteria are attached to the bottom of the slope tube and the reaction tank.

The discharge device includes a discharge buffer room, which communicates with the sludge pump and the discharge control valve through pipes; the heating device uses a biogas water heater or a solar water heater to supply hot water for the heating pipe.

The air outlet device has an air collection cylinder, and is connected to the water tank and the gas cabinet above it through the air pipe, and the gas outlet is controlled by the main air valve attached to the gas cabinet.

The gas outlet device is also connected with a negative pressure device, including a water pump and a water pump connected between the gas collection cylinder and the water tank, the water pump is connected to the water tank, and there is purification medicine in the water tank, and the gas enters the gas cabinet above the water tank through the water pump .

In addition, the air outlet device can also be provided with an air distribution valve, which is connected to the top of the gas collection cylinder and can be provided with three outlets; one outlet is connected to the upper air outlet device; the other outlet is connected to the heating device; the third outlet is connected to the safety valve.

The ecological waste recycling device can be constructed by using one or more materials of brick, sand, lime, cement, reinforced concrete, plastic, glass fiber reinforced plastic, and steel.

The utility model utilizes the fermentation reaction tank with slope tube structure and the anaerobic methane bacteria attached to the bottom, cooperates with solar energy or methane auxiliary heating to carry out temperature adjustment control, heats the fermentation material liquid and makes it circulate back to produce anaerobic fermentation reaction , catalytic biological decomposition, negative pressure purification and recovery of combustible gas, and use the sludge pump to send the decomposed waste liquid and waste residue to the farmland or greenhouse through the discharge regulating valve. The specific beneficial effects are as follows:

1. Complete and efficient decomposition

In the traditional biogas production process, some are combined with plastic greenhouse breeding and planting. Although the temperature is increased, the best environmental control for waste fermentation cannot be achieved. The utility model utilizes the slope tube type anaerobic fermentation reaction tank, and the anaerobic methane bacteria attached to the bottom of the slope tube and the reaction tank play the role of strengthening the decomposition of raw materials under more suitable conditions; coupled with solar energy or biogas to heat the fermentation material liquid, automatic The upper and lower circulation convection is formed to promote the flow and dispersion of the material particles attached to the anaerobic methane bacteria, and the heated fermentation feed liquid circulates back into the feed room, which accelerates the decomposition of the raw material and achieves the circulation stirring effect on the fermentation feed liquid, keeping Optimal conditions for biogas fermentation.

2. Negative pressure purification and recovery of methane gas

The traditional biogas is recovered under normal pressure. In fact, due to the accumulation of biogas, a certain pressure is generated in the gas storage space above the fermentation liquid, which affects the gas production. And because the low-temperature fermentation is not complete, a large amount of raw material floats and crusts, which is not conducive to the further generation of methane. The device uses circulating water jet negative pressure to recover methane gas, which can prevent crusting and increase gas production rate. Adding a purifier to the circulating water can remove harmful impurities in the fermentation gas and obtain clean combustible gas.

3. Safe and stable operation

The recovery device adopts a gas distribution valve. In addition to the outlet connected to the gas outlet device, there is also an outlet connected to the biogas and solar water heater, which can give priority to ensuring the temperature stability in the reaction tank; the other outlet is connected to the safety valve. Once the negative pressure device fails, the pressure of the reaction tank exceeds the standard. , can be automatically vented to eliminate potential safety hazards.

4. The waste liquid and waste residue are used to grow plants or grass, and the biogas is heated to control the temperature and strengthen the growth

The device uses a sludge pump to send the decomposed waste liquid and waste residue to the farmland or greenhouse through the discharge regulating valve. A biogas-assisted heating insulation system is installed under the soil layer in the planting area, and a plastic or glass greenhouse is added above to ensure that the planted cash crops or pastures can grow rapidly all year round under the best conditions, and a large amount of biogas waste liquid and waste residue is consumed. As a nutrient-rich green organic fertilizer, the waste liquid and waste residue can not only improve the quality and quality of agricultural products, but also thoroughly solve the problem of effective utilization and value-added of the waste liquid and waste residue from biogas fermentation.

Adopting the device of the utility model can change the current rural single mode that only focuses on food production, and use agricultural production waste as raw materials for ecological combustible gas; meanwhile, urban domestic garbage, organic polluted wastewater and domestic sewage can also be used as The raw material of the utility model truly realizes the recycling and utilization of resources. The energy generated can replace coal, oil, and natural gas in many fields, and is not restricted by resource and environmental conditions. It can be obtained locally, and has the advantages of easy availability of raw materials, low cost, low pollution, safe production, and large market demand.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The reference marks in the figure are: 1. Automatic pumping type feed inlet, 2. Fermentation reaction tank, 3. Discharge buffer room, 4. Sludge pump, 5. Discharge regulating valve, 6. Feed liquid check Valve, 7. Heating pipe, 8. Unicom pipe, 9. Air collecting cylinder, 10. Distributor valve, 11. Water pump, 12. Water pump, 13. Purifying water pipe, 14. Sink, 15. Purifying potion, 16. Gas cabinet, 17. Total gas valve, 18. Biogas water heater or solar water heater, 19. Barrier wall, 20. Feed liquid heating tank.

Detailed ways

The waste recycling device according to the utility model can adopt the following embodiments.

As shown in Figure 1, the feed liquid (human and animal feces, crushed plant stems and leaves, domestic sewage, etc.) enters the slope tube anaerobic fermentation reaction tank 2 from the automatic suction feed inlet 1, and passes through the slope tube and the slope tube , The anaerobic methane bacteria attached to the bottom of the reaction tank to promote fermentation. Wherein the angle formed by the slope pipe and the horizontal plane is preferably 20°-40°.

In addition, there is a barrier wall 19 in the fermentation reaction tank 2, and a communication pipe 8 is opened on it. Part of the feed liquid in the discharge room enters the feed liquid heating tank 20 through the check valve 6. After being heated by the heating pipe 7, it passes through the communication pipe. 8 back into the feed room of the anaerobic fermentation reaction tank to increase the content of active anaerobic microorganisms and methane bacteria in the raw material and ensure the anaerobic fermentation temperature, and to circulate the fermentation material liquid to accelerate the decomposition of the raw material and achieve The circulating stirring effect of the fermentation feed liquid improves and stabilizes the gas production.

After fermentation, combustible gas (biogas) mainly composed of methane is produced. The waste liquid and waste residue pass through the discharge buffer room 3, use the sludge pump 4, and pass the discharge regulating valve 5 to send the waste liquid and residue to the farmland for use as organic fertilizer. Or processed into organic compound fertilizer.

The combustible gas (biogas) produced by the anaerobic fermentation reaction tank is recovered under negative pressure through the gas collecting cylinder 9, the gas distribution valve 10, and the water extractor 11. The water aspirator is driven by a water pump 12, and the gas and water are pumped into the water tank 14 through the water purification pipe 13 together. In the water tank, there is a purification medicine 15, and the water is filled with a purification agent to remove harmful impurities in the gas (methane) and enter the gas cabinet 16 to become Clean ecological combustible gas is supplied to users by the main gas valve 17.

The hot water used for indirect heating of the feed liquid heating pipe is supplied by a biogas water heater or a solar water heater 18.

Other outlets of gas distribution valve 10 can also adopt the following connection methods, one of which can connect biogas water heater or solar water heater 18, and give priority to ensuring the stability of temperature in the reaction tank (not shown); one of them can connect safety valve, once If the negative pressure device fails and the pressure in the reaction pool exceeds the standard, it can be automatically emptied to eliminate potential safety hazards.

Claims (10)

1. utilize ecological waste material to produce the slope tubular device of combustion gas, include the fermentation reaction pond (2) of automatic suction formula opening for feed (1), heating unit, drawing mechanism and air-out apparatus is characterized in that: described fermentation reaction pond (2) has the slope pipe that links to each other with automatic suction formula opening for feed (1); The heating tube (7) that is communicated with described heating unit is connected in the fermentation reaction pond (2).

2. slope according to claim 1 tubular device, it is characterized in that: also be provided with barrier (19) in the described fermentation reaction pond (2), form feed liquid heating tank (20) between two barriers, have closed tube (8) on the barrier, feed liquid vacuum breaker (6) is housed on it.

3. slope according to claim 1 and 2 tubular device is characterized in that: described slope pipe is preferably 20 °～40 ° with the horizontal plane angulation.

4. slope according to claim 1 and 2 tubular device is characterized in that: anaerobically fermenting is adopted in described fermentation reaction pond (2), is attached with the anaerobic methane bacterium at slope pipe and reaction tank bottom.

5. slope according to claim 1 and 2 tubular device is characterized in that: described drawing mechanism comprises between the discharging buffering (3), is communicated with sludge pump (4) and discharging variable valve (5) by pipeline.

6. slope according to claim 1 and 2 tubular device is characterized in that: it is heating tube (7) hot-water supply that described heating unit adopts biogas water-heater or solar water heater (18).

7. slope according to claim 1 and 2 tubular device is characterized in that: described air-out apparatus has gas collection cylinder (9), and connects tank (14) by tracheae, and the gas holder of top (16), by gas holder (16) with total air valve (17) control give vent to anger.

8. slope according to claim 7 tubular device, it is characterized in that: described air-out apparatus also is connected with negative pressure device, be included in and be connected to water aspirator (11) and water pump (12) between gas collection cylinder (9) and the tank (14), water pump (12) links to each other with tank (14), be to purify liquid medicine (15) in the tank (14), gas enters the gas holder (16) of tank (14) top by water aspirator (11).

9. slope according to claim 7 tubular device is characterized in that: air-out apparatus also can be provided with gas-separating valve (10), is connected in gas collection cylinder (9) top, can establish three outlets; The one outlet is communicated with the top air-out apparatus; Another outlet is communicated with heating unit; The 3rd outlet connects safety valve.

10. slope according to claim 1 and 2 tubular device is characterized in that: this retrieving arrangement can adopt its one or more combination of materials construction in brick, sand, lime, cement, Steel Concrete, plastics, glass reinforced plastic, the iron and steel.

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