CN212954501U - Anaerobic two-stage biogas high-pressure leakage-proof system - Google Patents
Anaerobic two-stage biogas high-pressure leakage-proof system Download PDFInfo
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- CN212954501U CN212954501U CN202021334713.9U CN202021334713U CN212954501U CN 212954501 U CN212954501 U CN 212954501U CN 202021334713 U CN202021334713 U CN 202021334713U CN 212954501 U CN212954501 U CN 212954501U
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Abstract
The utility model relates to the technical field of sewage treatment projects containing anaerobic treatment processes such as UASB, UBF and the like, in particular to an anaerobic secondary methane high-pressure leakage-proof system which is provided with an anaerobic tank and a nitrification tank, a methane recovery device and a primary rupture disk are arranged above the anaerobic tank, the methane recovery device comprises a recovery water tank, a recovery air inlet pipe and a recovery air outlet pipe, and is characterized in that a secondary methane leakage-proof component is arranged on the anaerobic tank, the secondary methane leakage-proof component comprises a secondary rupture disk, a valve, a secondary methane inlet pipe, a secondary methane outlet pipe and an aeration fan, one end of the secondary methane inlet pipe is communicated with the anaerobic tank, the other end of the secondary methane inlet pipe is connected with the nitrification tank through the aeration fan and the secondary methane outlet pipe, the secondary methane inlet pipe is provided with the valve and the secondary rupture disk, the valve, has the advantages of simple structure, convenient use, good safety effect, prevention of the risk of methane leakage and the like.
Description
Technical Field
The utility model relates to a sewage treatment project technical field who contains anaerobic treatment processes such as UASB, UBF, specifically speaking is a system is prevented leaking to anaerobism second grade marsh gas high pressure of risk that simple structure, convenient to use, safe effectual, prevent marsh gas leakage.
Background
As is known, the conventional safety protection measures of the anaerobic tank are that a high-pressure rupture disk is arranged on the top of the tank, when a methane recovery system fails, the methane pressure of the anaerobic tank reaches a limit value, the high-pressure rupture disk is ruptured, and methane is discharged to the air so as to achieve the purpose of reducing the pressure. The disadvantages are that the biogas discharged outside air causes surrounding odor pollution and has explosion risk.
Disclosure of Invention
The utility model aims at solving the defects of the prior art and providing an anaerobic secondary methane high-pressure leakage-proof system which has simple structure, convenient use, good safety effect and prevents the risk of methane leakage.
The utility model provides a technical scheme that its technical problem adopted is:
an anaerobic secondary methane high-pressure leakage-proof system is provided with an anaerobic tank and a nitrification tank, wherein a methane recovery device and a primary rupture disk are arranged above the anaerobic tank, the methane recovery device comprises a recovery water tank, a recovery air inlet pipe and a recovery air outlet pipe, the recovery water tank is arranged above the anaerobic tank, one end of the recovery air inlet pipe extends into the anaerobic tank, the other end of the recovery air inlet pipe extends to the lower part of water in the recovery water tank, one end of the recovery air outlet pipe extends to the upper part of the water in the recovery water tank, the other end of the recovery water tank extends out of the recovery water tank and is connected with the methane recovery system, the upper part of the anaerobic tank is connected with the primary rupture disk, the anaerobic tank is provided with a secondary methane leakage-proof component, the secondary methane leakage-proof component comprises a secondary rupture disk, a valve, a secondary methane inlet pipe, a secondary methane outlet pipe, the other end of the second-stage methane inlet pipe is connected with the nitrification tank through the aeration fan and the second-stage methane outlet pipe, a valve and a second-stage rupture disk are arranged on the second-stage methane inlet pipe at the joint of the second-stage methane inlet pipe and the anaerobic tank, and the valve and the second-stage rupture disk are respectively connected with the second-stage methane inlet pipe.
Second grade marsh gas intake pipe on be equipped with hydrogen sulfide detecting head, whether have marsh gas to get into in detecting the second grade marsh gas intake pipe through hydrogen sulfide detecting head, and then the condition in real-time detection anaerobism pond.
The air inlet of aeration fan connect the three-way pipe, the expert of three-way pipe is connected with aeration fan's air inlet, the two-way of three-way pipe is linked together with second grade marsh gas intake pipe, the tee bend of three-way pipe is linked together with external air, aeration fan also can carry out work under the condition that does not have the marsh gas leakage.
Second grade marsh gas intake pipe on be equipped with valve and second grade rupture disk along the marsh gas flow direction in proper order, the valve is established at the rear of second grade rupture disk, makes marsh gas flow through the valve earlier and then flows through second grade rupture disk, can change second grade rupture disk.
The valve is set as a manual valve, and the air output can be adjusted in real time.
One-level rupture disc set up ultimate pressure and be greater than setting up ultimate pressure of second grade rupture disc, make second grade rupture disc explode earlier, avoid marsh gas to leak.
The utility model has the advantages that: on the basis of the existing equipment, the two-stage biogas leakage-proof assembly is added, the aeration fan of the nitrification tank is used for guiding biogas into the nitrification tank, the hydrogen sulfide detection head is arranged to play a warning function and serve as a priority measure for safety protection, so that the risk of biogas leakage is prevented, and the device has the advantages of simple structure, convenience in use, good safety effect, risk of biogas leakage prevention and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in the attached drawing, the anaerobic secondary biogas high-pressure leakage-proof system is provided with an anaerobic tank 1 and a nitrification tank 2, a biogas recovery device and a primary rupture disk 3 are arranged above the anaerobic tank 1, the biogas recovery device comprises a recovery water tank 4, a recovery air inlet pipe 5 and a recovery air outlet pipe 6, the recovery water tank 4 is arranged above the anaerobic tank 1, one end of the recovery air inlet pipe 5 extends into the anaerobic tank 1, the other end of the recovery air inlet pipe 5 extends to the lower part of the water in the recovery water tank 4, one end of the recovery air outlet pipe 6 extends to the upper part of the water in the recovery water tank 4, the other end extends out of the recovery water tank 4 and is connected with the biogas recovery system, the upper part of the anaerobic tank 1 is connected with the primary rupture disk 3, and the anaerobic tank is characterized in that a secondary biogas leakage-proof component is arranged on the anaerobic tank 1, and comprises a secondary rupture disk, The device comprises a secondary methane outlet pipe 10 and an aeration fan 11, wherein one end of a secondary methane inlet pipe 9 is communicated with the anaerobic tank 1, the other end of the secondary methane inlet pipe 9 is connected with the nitrification tank 2 through the aeration fan 11 and the secondary methane outlet pipe 10, a valve 8 and a secondary rupture disk 7 are arranged on a secondary methane inlet pipe 9 at the joint of the secondary methane inlet pipe 9 and the anaerobic tank 1, and the valve 8 and the secondary rupture disk 7 are respectively connected with the secondary methane inlet pipe 9.
Further, a hydrogen sulfide detector 12 is arranged on the secondary methane inlet pipe 9, and whether methane enters the secondary methane inlet pipe 9 or not is detected through the hydrogen sulfide detector 12, so that the condition of the anaerobic tank 1 is detected in real time.
Further, an air inlet of the aeration fan 11 is connected with a three-way pipe, one way of the three-way pipe 13 is connected with the air inlet of the aeration fan 11, two ways of the three-way pipe 13 are communicated with the secondary methane air inlet pipe 9, and the three way of the three-way pipe 13 is communicated with external air, so that the aeration fan 11 can work under the condition of no methane leakage.
Furthermore, a valve 8 and a second-stage rupture disk 7 are sequentially arranged on the second-stage biogas inlet pipe 9 along the biogas flow direction, and the valve 8 is arranged behind the second-stage rupture disk 7, so that biogas flows through the valve 8 and then flows through the second-stage rupture disk 7, and the second-stage rupture disk 7 can be replaced.
Furthermore, the valve 8 is set as a manual valve 8, and the gas output can be adjusted in real time in a rotating manner.
Furthermore, the set limit pressure of the first-stage rupture disk 3 is greater than that of the second-stage rupture disk 7, so that the second-stage rupture disk 7 is firstly ruptured to avoid methane leakage.
The utility model discloses when using, owing to be equipped with second grade marsh gas leak protection subassembly, after marsh gas recycling system trouble, when atmospheric pressure in the methane-generating pit reaches second grade rupture disk 7's extreme pressure, second grade rupture disk 7 will explode, and then aeration fan 11 will leak the marsh gas intake nitrify in the pond 2, nitrify pond 2 aeration fan 11 with marsh gas intake nitrify pond 2 and do the aeration and use, nitrify pond 2 and carry out the deodorization function to marsh gas, and detect the aeration back through hydrogen sulfide detecting head 12, just show marsh gas recovery system trouble, treat that system recovery pressure is normal after, it can to close manual valve and change second grade high pressure rupture disk, in-process using, second grade rupture disk 7 will be less than one-level rupture disk 3 as priority safety measure pressure limit, manual valve 8 does not want to open entirely at ordinary times, aeration fan 11's tee bend air inlet is opened entirely, prevent that too big secondary rupture disk 7 that causes the negative pressure to break and high pressure fan intake behind the second grade rupture disk too much to nitrify pond 2 and cause certain influence to nitri When the biogas recovery system fails and can not recover in a short period and needs to suck biogas into the nitrification tank 2 for a long time, the biogas inlet amount of the aeration fan 11 can be adjusted according to the value detected by the hydrogen sulfide detector 12.
The utility model has the advantages that: on the basis of the existing equipment, the secondary methane leakage-proof assembly is added, the aeration fan 11 of the nitrification tank 2 is used for guiding methane into the nitrification tank 2, and the hydrogen sulfide detection head 12 is arranged to play a warning function and serve as a priority measure for safety protection, so that the risk of methane leakage is prevented, and the methane leakage-proof device has the advantages of simple structure, convenience in use, good safety effect, risk of methane leakage prevention and the like.
Claims (6)
1. An anaerobic secondary methane high-pressure leakage-proof system is provided with an anaerobic tank and a nitrification tank, wherein a methane recovery device and a primary rupture disk are arranged above the anaerobic tank, the methane recovery device comprises a recovery water tank, a recovery air inlet pipe and a recovery air outlet pipe, the recovery water tank is arranged above the anaerobic tank, one end of the recovery air inlet pipe extends into the anaerobic tank, the other end of the recovery air inlet pipe extends to the lower part of water in the recovery water tank, one end of the recovery air outlet pipe extends to the upper part of the water in the recovery water tank, the other end of the recovery water tank extends out of the recovery water tank and is connected with the methane recovery system, the upper part of the anaerobic tank is connected with the primary rupture disk, the anaerobic tank is provided with a secondary methane leakage-proof component, the secondary methane leakage-proof component comprises a secondary rupture disk, a valve, a secondary methane inlet pipe, a secondary methane outlet pipe, the other end of the second-stage methane inlet pipe is connected with the nitrification tank through the aeration fan and the second-stage methane outlet pipe, a valve and a second-stage rupture disk are arranged on the second-stage methane inlet pipe at the joint of the second-stage methane inlet pipe and the anaerobic tank, and the valve and the second-stage rupture disk are respectively connected with the second-stage methane inlet pipe.
2. An anaerobic secondary biogas high-pressure leakage-preventing system according to claim 1, wherein a hydrogen sulfide detector is arranged on the secondary biogas inlet pipe, and the hydrogen sulfide detector detects whether biogas enters the secondary biogas inlet pipe, thereby detecting the condition of the anaerobic tank in real time.
3. An anaerobic secondary biogas high-pressure leakage-preventing system according to claim 1, wherein an air inlet of the aeration fan is connected with a three-way pipe, one way of the three-way pipe is connected with an air inlet of the aeration fan, the two way of the three-way pipe is communicated with a secondary biogas inlet pipe, the three way of the three-way pipe is communicated with external air, and the aeration fan can work under the condition of no biogas leakage.
4. An anaerobic secondary biogas high pressure leakage prevention system according to claim 1, wherein the secondary biogas inlet pipe is provided with a valve and a secondary rupture disc in sequence along the biogas flow direction, the valve is provided behind the secondary rupture disc, so that the secondary rupture disc can be replaced by allowing biogas to flow through the valve and then the secondary rupture disc.
5. An anaerobic secondary biogas high pressure leakage prevention system according to claim 1, wherein the valve is a manual valve, and the gas output can be adjusted by rotating in real time.
6. An anaerobic secondary biogas high pressure containment system, as per claim 1, wherein the set limit pressure of the primary rupture disk is greater than the set limit pressure of the secondary rupture disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021334713.9U CN212954501U (en) | 2020-07-09 | 2020-07-09 | Anaerobic two-stage biogas high-pressure leakage-proof system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021334713.9U CN212954501U (en) | 2020-07-09 | 2020-07-09 | Anaerobic two-stage biogas high-pressure leakage-proof system |
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| Publication Number | Publication Date |
|---|---|
| CN212954501U true CN212954501U (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021334713.9U Active CN212954501U (en) | 2020-07-09 | 2020-07-09 | Anaerobic two-stage biogas high-pressure leakage-proof system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212954501U (en) |
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2020
- 2020-07-09 CN CN202021334713.9U patent/CN212954501U/en active Active
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