Water-gas separator for sewage collection system and water-gas separation method thereof

Abstract

The present invention provides a water-gas separator for a sewage collection system and a water-gas separation method thereof. Multiple water scrubber spray towers are connected to the gas-water separator through a sewage pipe network. An inclined guide plate is provided at the bottom of the gas-water separator. A partition is also provided inside the gas-water separator. The partition extends downward close to the guide plate and leaves a gap between the partition and the guide plate. A sewage discharge pipeline is provided in a chamber on one side of the flow plate. A magnetic flap level gauge is provided above the sewage discharge pipeline. A return air pipeline is provided above the chamber on the other side of the guide plate. The return air pipeline is connected to the middle of the water scrubber spray tower. The labor intensity of workers is reduced and the construction of intelligent factories is accelerated. Sewage is collected and treated in a centralized manner through a sewage pool, solving the environmental problem of excessive smoke on site. This patent solves the flash explosion phenomenon caused by gas mixing by using a gas-water separator to separate and collect coal gas and sewage, and eliminates production safety hazards.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment, and in particular to a water-gas separator for a sewage collection system and a water-gas separation method thereof. Background Art

[0002] Existing yellow phosphorus washing tower wastewater collection methods are as follows Figure 2 As shown, the coal gas mixture in the water washing tower is washed by water in the water washing tower spray tower and then mixed through the water washing tower sewage pipe network to become a water-gas mixture (the medium includes sewage, phosphorus sludge, coal gas, etc.) and then collected into the sewage pool through the sewage collection pipeline.

[0003] The disadvantages of this technique are:

[0004] 1. Due to the high temperature of the coal gas mixture, the water temperature becomes higher after washing in the water washing tower and spray tower. When the spray water mixes with the coal gas mixture and enters the sewage pool, the water vapor is evaporated, resulting in a lot of smoke on site. This seriously pollutes the environment and affects the construction of a green factory.

[0005] 2. Because the coal gas mixture is washed and mixed in the water washing tower spray tower and then enters the sewage pool through the sewage network and collection pipeline, the water-gas mixture contains combustible gases such as coal gas. When the coal gas reaches a certain concentration, flash explosions often occur, causing great safety hazards. Summary of the Invention

[0006] The main purpose of the present invention is to provide a water-gas separator and a water-gas separation method for a sewage collection system, so as to solve the problem that the coal gas mixture is washed and mixed in a water washing tower and spray tower and then enters the sewage pool through the sewage pipe network and collection pipeline. The water-gas mixture contains combustible gases such as coal gas. When the coal gas reaches a certain concentration, flash explosions often occur, causing great safety hazards.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a water-gas separator for a sewage collection system, multiple water washing tower spray towers are connected to the gas-water separator through a sewage pipe network, an inclined guide plate is provided at the bottom of the gas-water separator, and a partition is also provided inside the gas-water separator. The partition extends downward close to the guide plate and a gap is left between the guide plate. A sewage pipeline is provided in the chamber on one side of the guide plate, and a magnetic flap liquid level gauge is provided above the sewage pipeline. A return air pipeline is provided above the chamber on the other side of the guide plate, and the return air pipeline is connected to the middle of the water washing tower spray tower.

[0008] In the preferred embodiment, the sewage pipeline is arranged at the bottom of the chamber on one side of the guide plate, the sewage pipeline outlet is arranged at the lower end of the inclined guide plate, and an overflow pipeline is also provided above the magnetic flap level gauge. Valves are provided on both the overflow pipeline and the sewage pipeline.

[0009] In the preferred solution, an overflow valve is provided on the overflow pipeline, and a sewage valve is provided on the sewage pipeline, and the overflow valve and the sewage valve are electric valves.

[0010] In the preferred embodiment, the pipes at the upper and lower ends of the magnetic flap level gauge are connected to the gas-water separator, a radio frequency coil is provided on the magnetic float inside the magnetic flap level gauge, and an induction head is provided outside the magnetic flap level gauge. The induction head receives the radio frequency coil signal, and the induction head is electrically connected to the drain valve and the overflow valve.

[0011] In a preferred embodiment, the sensing head includes a first sensing head and a second sensing head, and the first sensing head and the second sensing head are electrically connected to the sewage valve and the overflow valve respectively.

[0012] In the preferred embodiment, a return air valve is further provided on the return air pipeline.

[0013] The method includes:

[0014] S1. After the coal gas mixture in the water scrubber spray tower is sprayed by the water scrubber spray tower, the coal gas mixture and the spray water pass through the sewage pipe network and enter the gas-water separator;

[0015] S2. After entering the gas-water separator, the sewage flows along the guide plate into the left side of the separator. The magnetic flap level gauge sets the sewage level high and low limits.

[0016] S3. Method for setting the high and low limits of the magnetic flap level gauge: Place the first sensor head at the scale position to be set, fix the first sensor head on the magnetic flap level gauge, and then place the second sensor head at the low limit position of the magnetic flap level gauge to complete the setting of the high and low limits;

[0017] S4. When the sewage level reaches the upper limit, the radio frequency coil on the magnetic float moves close to the first sensing head. The first sensing head senses the position of the magnetic float and generates an electrical signal to open the sewage valve or overflow valve to start sewage discharge through the sewage pipeline or overflow pipeline.

[0018] S5. The magnetic float of the magnetic flap level gauge reaches the lowest position. The second sensor head senses the position of the magnetic float to prevent the gas mixture from mixing in from the bottom of the partition due to the low liquid level and causing a flash explosion. The electrical signal generated by the second sensor head closes the drain valve and the overflow valve.

[0019] S6. The right side is the gas chamber. When too much gas mixture is generated inside the gas chamber, the oxygen content detected by the oxygen sensor will decrease. The electronic control device will control the return gas valve to open, and the gas mixture will return to the spray tower along the return gas pipeline.

[0020] The present invention provides a water-gas separator for a sewage collection system and a water-gas separation method thereof. The coal gas floats up and directly returns to the tower via the return gas pipeline. The sewage flows into the water-gas separator, where it is detected by a magnetic flap level gauge and automatically flows through the sewage pipeline and a drain valve into the collection tank, thereby achieving the effect of completely separating the sewage and coal gas. Since the sewage and coal gas are separated by the separator, and the coal gas is returned to the tower after separation, the sewage is free of coal gas, thus resolving the safety hazard of gas flash explosions. The sewage enters the sewage tank for centralized collection and treatment, resolving the problem of excessive smoke on site and ensuring the environmental protection requirements of a green factory. Furthermore, the water-gas separation process is entirely automated and unmanned on-site, promoting the realization of modern intelligent factories and reducing worker labor intensity.

[0021] This patented system automates the water-gas separation system through a magnetic flap level gauge, reducing labor intensity and accelerating the development of intelligent factories. Wastewater is centrally collected and treated in a sewage pool, resolving the environmental issue of excessive smoke on-site. By utilizing a gas-water separator to separate and collect gas and wastewater, this patented system eliminates flash explosions caused by gas mixing and eliminates production safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples:

[0023] Figure 1 This is a schematic diagram of the overall connection of the water-gas separator of the present invention;

[0024] Figure 2 It is a schematic diagram of the prior art connection of the present invention;

[0025] Figure 3 This is a structural diagram of the magnetic flap level gauge of the present invention;

[0026] Figure 4 This is a diagram showing the installation structure of the magnetic float and the induction head inside the magnetic flap level gauge of the present invention;

[0027] Figure 5 It is a schematic diagram of the radio frequency system induction of the present invention.

[0028] In the figure: water scrubber spray tower 1; coal gas mixture 2; spray water 3; return air pipeline 4; sewage network 5; return air valve 6; coal gas chamber 7; sewage 8; guide plate 9; overflow pipeline 10; overflow valve 11; sewage pipeline 12; sewage valve 13; gas-water separator 14; magnetic flap level gauge 15; magnetic float 1501; radio frequency coil 1502; partition 16; first induction head 17; second induction head 18; electronic control device 19; oxygen sensor 20. DETAILED DESCRIPTION

[0029] Example 1

[0030] like Figures 1 to 5 The figure shows a water-gas separator for a sewage collection system. Multiple water scrubber spray towers 1 are connected to a gas-water separator 14 via a sewage pipe network 5. An inclined guide plate 9 is provided at the bottom of the gas-water separator 14. A partition 16 is also provided inside the gas-water separator 14. The partition 16 extends downward, close to the guide plate 9, and a gap is left between the partition 16 and the guide plate 9. A sewage discharge line 12 is provided in a chamber on one side of the guide plate 9. A magnetic flap level gauge 15 is provided above the sewage discharge line 12. A return air line 4 is provided above the chamber on the other side of the guide plate 9. The return air line 4 is connected to the middle of the water scrubber spray tower 1. The sewage discharge line 12 is provided at the bottom of the chamber on one side of the guide plate 9. The outlet of the sewage discharge line 12 is located at the lower end of the inclined guide plate 9. An overflow line 10 is provided above the magnetic flap level gauge 15. Both the overflow line 10 and the sewage discharge line 12 are equipped with valves.

[0031] The return air pipeline 4 is also provided with a return air valve 6. After opening the return air valve 6, the right side is the gas chamber 7, and the gas mixture 2 returns to the spray tower along the return air pipeline 4.

[0032] After the coal gas mixture 2 in the water washing tower is sprayed by the water washing tower spray tower 1, the coal gas mixture 2 and the spray water 3 pass through the sewage pipe network 5 and enter the gas-water separator 14.

[0033] After entering the gas-water separator 14, the wastewater (phosphorus-containing sludge) 8 flows along the guide plate 9 to the left side of the separator. A magnetic flap level gauge 15 sets the wastewater level's upper and lower limits. When the wastewater (phosphorus-containing sludge) 8 level exceeds the upper limit, the drain valve 13 automatically opens to discharge the wastewater through the drain line 12 or overflow line 10. The lower limit of the magnetic flap level gauge 15 must be set above the lowest point of the baffle 16 to prevent the gas mixture 2 from mixing in from the bottom of the baffle 16 and causing a flash explosion. To the right is the gas chamber 7, where the gas mixture 2 returns to the spray tower via the return line 4.

[0034] Due to the different densities of gas and liquid, when the liquid flows with the gas, it will be affected by gravity and produce a downward velocity, while the gas still flows in the original direction. In other words, the liquid and gas tend to separate in the gravitational field. The downward liquid adheres to the wall surface and gathers together and is discharged through the discharge pipe, achieving the effect of gas-water separation. This patent has the characteristics of low cost, long life, simple manufacturing process, high cost performance and high degree of automation. It not only solves the safety and environmental problems of excessive smoke and flash explosion after mixing with coal gas on site, but also plays a positive role in reducing the burden on workers and promoting the construction of intelligent factories.

[0035] In the preferred embodiment, an overflow valve 11 is installed on the overflow pipeline 10, and a drain valve 13 is installed on the sewage pipeline 12. Both overflow valve 11 and drain valve 13 are electrically operated valves. The upper and lower pipes of the magnetic flap level gauge 15 are connected to the gas-water separator 14. A radio frequency coil 1502 is also installed on the magnetic float 1501 inside the magnetic flap level gauge 15. An external sensor head is also installed on the magnetic flap level gauge 15 to receive signals from the radio frequency coil 1502. The sensor head is electrically connected to the drain valve 13 and the overflow valve 11. The sensor head includes a first sensor head 17 and a second sensor head 18, which are electrically connected to the drain valve 13 and the overflow valve 11, respectively. The first sensing head 17 and the second sensing head 18 are installed on the outside of the magnetic flap level gauge 15. The installation positions of the first sensing head 17 and the second sensing head 18 can be determined according to the settings. The first sensing head 17 monitors the highest liquid level inside the gas-water separator 14, and the second sensing head 18 monitors the lowest liquid level inside the gas-water separator 14. When the radio frequency coil 1502 on the magnetic float 1501 approaches the first sensing head 17 or the second sensing head 18, when the first sensing head 17 senses the radio frequency coil 1502, the liquid level of the phosphorus sludge 8 in the sewage inside the gas-water separator 14 exceeds the upper limit, and the first sensing head 17 controls the overflow valve 11 and the sewage valve 13 to open and discharge sewage. When the second sensing head 18 senses the radio frequency coil 1502, the liquid level of the phosphorus sludge 8 in the sewage inside the gas-water separator 14 is at the lowest limit, and the second sensing head 18 controls the overflow valve 11 and the sewage valve 13 to close.

[0036] like Figure 5 As shown, the radio frequency continuously emits a set of electromagnetic waves of a fixed frequency to the surrounding area. When the radio frequency card corresponding to the specific frequency of the radio frequency coil 1502 enters the working area of ​​the first induction head 17 or the second induction head 18, the radio frequency coil 1502 circuit resonates under electromagnetic excitation. The resonance causes the capacitor in the radio frequency card to accumulate charge. When the accumulated charge reaches a specified voltage, it can be used as a power supply to provide operating voltage for the radio frequency card integrated circuit. The radio frequency coil 1502 generates a signal and transmits it to the radio frequency module. The information received by the radio frequency module is transmitted to the single-chip microcomputer. The radio frequency signal read by the single-chip microcomputer is transmitted to the read memory (EEPROM). The EEPROM uses AT24C16. The information of the radio frequency coil 1502 in the read memory (EEPROM) is the same as the radio frequency signal. The single-chip microcomputer transmits the signal to the control circuit to control the opening and closing of the overflow valve 11 and the sewage valve 13.

[0037] Example 2

[0038] Further illustrate with reference to Example 1, Figure 1-5 In the structure shown, after the coal gas mixture 2 in the water scrubber spray tower 1 is sprayed by the water scrubber spray tower 1 , the coal gas mixture 2 and the spray water 3 pass through the sewage pipe network 5 and enter the gas-water separator 14 .

[0039] After entering the gas-water separator 14, the sewage 8 flows along the guide plate 9 into the left side of the separator, and the magnetic flap level gauge 15 sets the sewage level high and low limits.

[0040] The method for setting the high and low limits of the magnetic flap level gauge 15 is as follows: place the first sensor head 17 at the scale position to be set, fix the first sensor head 17 on the magnetic flap level gauge 15, and then place the second sensor head 18 at the lower limit position of the magnetic flap level gauge 15 to complete the setting of the high and low limits.

[0041] When the sewage 8 level reaches the upper limit, the radio frequency coil 1502 on the magnetic float 1501 approaches the position of the first sensing head 17. The first sensing head 17 senses the position of the magnetic float 1501. The electrical signal generated by the first sensing head 17 opens the sewage valve 13 or the overflow valve 11 to start discharging sewage, which is discharged through the sewage pipeline 12 or the overflow pipeline 10.

[0042] The magnetic float 1501 of the magnetic flap level gauge 15 reaches the lowest position, and the second sensor head 18 senses the position of the magnetic float 1501 to prevent the liquid level from being too low, causing the gas mixture 2 to mix in from the bottom of the partition 16 and cause a flash explosion. The electrical signal generated by the second sensor head 18 closes the drain valve 13 and the overflow valve 11.

[0043] On the right is the gas chamber 7. When the gas mixture 2 generated inside the gas chamber 7 is too much, the oxygen content detected by the oxygen sensor 20 will decrease, and the electronic control device 19 controls the return gas valve 6 to open, and the gas mixture 2 returns to the spray tower along the return gas pipeline 4.

[0044] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A water-gas separator for a sewage collection system, characterized by: A plurality of water washing tower spray towers (1) are connected to the gas-water separator (14) through a sewage pipe network (5); an inclined guide plate (9) is provided at the bottom of the gas-water separator (14); a partition plate (16) is further provided inside the gas-water separator (14); the partition plate (16) extends downward close to the guide plate (9) and a gap is left between the partition plate (16) and the guide plate (9); a sewage pipe (12) is provided in a chamber on one side of the guide plate (9); a magnetic flap level gauge (15) is provided above the sewage pipe (12); a return air pipe (4) is provided above the chamber on the other side of the guide plate (9); and the return air pipe (4) is connected to the middle of the water washing tower spray tower (1); The upper and lower pipes of the magnetic flap level gauge (15) are connected to the gas-water separator (14); a radio frequency coil (1502) is provided on the magnetic float (1501) inside the magnetic flap level gauge (15); and a sensing head is provided outside the magnetic flap level gauge (15), the sensing head receives a signal from the radio frequency coil (1502), and the sensing head is electrically connected to the sewage valve (13) and the overflow valve (11); The induction head comprises a first induction head (17) and a second induction head (18), and the first induction head (17) and the second induction head (18) are electrically connected to the sewage valve (13) and the overflow valve (11), respectively; The return air line (4) is also provided with an electric return air valve (6); An oxygen sensor (20) is provided inside the gas-water separator (14). The oxygen sensor (20) is electrically connected to the electric control device (19), and the electric control device (19) is electrically connected to the air return valve (6).

2. The water-gas separator for a sewage collection system according to claim 1, characterized in that: The sewage pipe (12) is arranged at the bottom of the chamber on one side of the guide plate (9), and the outlet of the sewage pipe (12) is arranged at the lower end of the inclined guide plate (9). An overflow pipe (10) is also arranged above the magnetic flap level gauge (15), and valves are provided on the overflow pipe (10) and the sewage pipe (12).

3. The water-gas separator for a sewage collection system according to claim 2, characterized in that: An overflow valve (11) is provided on the overflow pipeline (10), and a sewage valve (13) is provided on the sewage pipeline (12). The overflow valve (11) and the sewage valve (13) are electric valves.

4. The water-gas separation method of the water-gas separator for a sewage collection system according to claim 3, characterized in that: The method includes: S1, after the coal gas mixture (2) in the water scrubber spray tower (1) is sprayed by the water scrubber spray tower (1), the coal gas mixture (2) and the spray water (3) pass through the sewage pipe network (5) and enter the gas-water separator (14); S2. After entering the gas-water separator (14), the sewage (8) flows along the guide plate (9) to the left side of the separator, and the magnetic flap level gauge (15) sets the sewage level high and low limits. S3. Method for setting the high and low limits of the magnetic flap level gauge (15): placing the first sensing head (17) at the scale position to be set, fixing the first sensing head (17) on the magnetic flap level gauge (15), and then placing the second sensing head (18) at the low limit position of the magnetic flap level gauge (15) to complete the setting of the high and low limits; S4. When the sewage (8) level reaches the upper limit, the radio frequency coil (1502) on the magnetic float (1501) approaches the position of the first sensing head (17). The first sensing head (17) senses the position of the magnetic float (1501). The first sensing head (17) generates an electrical signal to open the sewage valve (13) or the overflow valve (11) to start sewage discharge, and the sewage is discharged through the sewage pipeline (12) or the overflow pipeline (10); S5, the magnetic float (1501) of the magnetic flap level gauge (15) reaches the lowest position, and the second sensing head (18) senses the position of the magnetic float (1501) to prevent the gas mixture (2) from mixing into the bottom of the partition (16) due to the low liquid level, causing a flash explosion. The electrical signal generated by the second sensing head (18) closes the drain valve (13) and the overflow valve (11); S6, the right side is the gas chamber (7). When the gas mixture (2) generated inside the gas chamber (7) is excessive, the oxygen content detected by the oxygen sensor (20) will decrease, and the electronic control device (19) controls the return gas valve (6) to open, and the gas mixture (2) returns to the spray tower along the return gas pipeline (4), completing the water-gas separation method.

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