High-efficiency gas-liquid neutralization reaction device for alkaline sewage of concrete mixing plant

Abstract

The utility model discloses a concrete mixing plant alkaline sewage gas-liquid efficient neutralization reaction device which comprises a tower barrel, a barrel cover, an outer water inlet pipe, an inner water inlet header pipe, water inlet branch pipes, spray heads, a gas inlet pipe, a gas outlet pipe, a water outlet pipe and a valve, the top of the tower barrel is provided with the barrel cover, the tower barrel is provided with a liquid level meter, the inner water inlet header pipe is arranged in the tower barrel, and the water inlet branch pipes are arranged in the tower barrel. The inner water inlet header pipe is connected with a plurality of water inlet branch pipes, each water inlet branch pipe is provided with a spray head, the outer water inlet pipe penetrates through the wall of the tower barrel to be connected with the inner water inlet header pipe and is connected with a water supply system, an air outlet pipe is arranged in the tower barrel, the air outlet pipe is close to the bottom of the tower barrel, and a plurality of air outlet holes are formed in the air outlet pipe. According to the utility model, the spray head is arranged above the gas discharging pipe, and the gas discharging pipe is arranged at the position close to the bottom of the tower barrel, so that alkaline sewage can be in full contact with carbon dioxide, and the neutralization reaction of the alkaline sewage and the carbon dioxide is more thorough and more efficient.

Description

[Technical field]

[0001] The utility model relates to the technical field of environmental protection, in particular to the technical field of alkaline sewage gas-liquid neutralization reaction device. [Background technology]

[0002] A large amount of alkaline wastewater is generated in concrete mixing plants. These alkaline wastewaters are generally neutralized with carbon dioxide gas to make them meet the emission standards or reuse standards. In the past, the gas-liquid reaction of carbon dioxide was mostly carried out by aeration. When using aeration, the absorption efficiency of liquid to gas is very low, and most of the gas overflows, which causes a great waste of resources, increases costs, and reduces the timeliness of sewage treatment. The discharge of gas also violates the environmental protection and "dual carbon" policies. [Contents of the utility model]

[0003] The purpose of the utility model is to solve the problems in the prior art and to propose a high-efficiency gas-liquid neutralization reaction device for alkaline sewage in a concrete mixing station, which improves the absorption efficiency of alkaline sewage on carbon dioxide and also improves the utilization efficiency of carbon dioxide.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a gas-liquid efficient neutralization reaction device for alkaline sewage in a concrete mixing station, comprising a tower barrel, a barrel cover, an external water inlet pipe, an internal water inlet main pipe, a water inlet branch, a nozzle, an air inlet pipe, an air outlet pipe, a water outlet pipe, and a valve. A barrel cover is installed on the top of the tower barrel, a liquid level gauge is installed on the tower barrel, an internal water inlet main pipe is provided inside the tower barrel, a plurality of water inlet branches are connected to the internal water inlet main pipe, each water inlet branch is provided with a nozzle, and the external water inlet pipe passes through the barrel wall of the tower barrel and The inner water inlet main is connected to the water supply system, the outer water inlet pipe is connected to the water supply system, an air outlet pipe is provided inside the tower barrel, the air outlet pipe is close to the bottom of the tower barrel, a plurality of air outlet holes are provided on the air outlet pipe, an air vent pipe is fixed on the outer wall of the tower barrel, the air vent pipe is connected to the inside of the tower barrel, the air vent pipe, the inner water inlet main, the water inlet branch pipe and the nozzle are all located above the air outlet pipe, the air inlet pipe passes through the barrel wall of the tower barrel and is connected to the air outlet pipe, the air inlet pipe is connected to the air supply system, the bottom of the tower is connected to the water outlet pipe, and a valve is provided on the water outlet pipe.

[0005] Preferably, the water outlet pipe is provided with a PH probe for detecting the PH value of the water inside the water outlet pipe, and the water outlet pipe is provided with an emptying ball valve matched with the PH probe, and the PH probe and the air supply system are both controlled by an automatic control system.

[0006] Preferably, the water outlet pipe is provided with a section of an upwardly arched pipeline, the arched pipeline is located downstream of the PH probe, and the highest point of the arched pipeline is higher than the water inlet end of the water outlet pipe and the PH probe.

[0007] Preferably, the external water inlet pipe is connected to the middle part of the internal water inlet main pipe, the internal water inlet main pipe is vertically arranged and located on the vertical center axis of the tower barrel, the water inlet branch is perpendicular to the internal water inlet main pipe, the water inlet branch is spirally arranged downward on the internal water inlet main pipe, and the nozzle is located at the bottom of the end of the water inlet branch.

[0008] Preferably, the valve is a ball valve.

[0009] Preferably, the vent pipe, internal water inlet main pipe, water inlet branch pipe, and nozzle are all located in the upper middle part of the tower barrel.

[0010] The beneficial effects of the utility model are as follows: the utility model arranges the nozzle above the vent pipe, and the vent pipe is arranged near the bottom of the tower barrel, so that the alkaline sewage can fully contact with the carbon dioxide, and the neutralization reaction between the alkaline sewage and the carbon dioxide is more thorough and more efficient; the automatic control system cooperates with the PH probe to adjust the gas supply of the gas supply system in real time, ensuring the stability of the water quality of the treated sewage; the arched pipeline is arranged on the outlet pipe to prevent the PH probe from being damaged due to lack of water, and at the same time can further ensure the effective water level at the bottom of the tower barrel to prevent the escape of carbon dioxide gas.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0012] Figure 1 This is a front view of the first embodiment of the utility model of the gas-liquid high-efficiency neutralization reaction device for alkaline sewage in a concrete mixing station;

[0013] Figure 2 This is a front cross-sectional view of the first embodiment of the utility model of the gas-liquid high-efficiency neutralization reaction device for alkaline sewage in a concrete mixing station;

[0014] Figure 3 It is a top view cross-sectional view of the utility model concrete mixing station alkaline sewage gas-liquid high-efficiency neutralization reaction device;

[0015] Figure 4 This is a front view of the second embodiment of the utility model of the gas-liquid high-efficiency neutralization reaction device for alkaline sewage in a concrete mixing station;

[0016] Figure 5 It is the front view of the third embodiment of the utility model of the gas-liquid high-efficiency neutralization reaction device for alkaline sewage in a concrete mixing station.

[0017] In the figure: 1-tower barrel, 2-external water inlet pipe, 3-air inlet pipe, 4-water outlet pipe, 10-barrel cover, 11-liquid level gauge, 12-vent pipe, 20-internal water inlet main pipe, 21-water inlet branch pipe, 22-nozzle, 30-air outlet pipe, 40-valve, 41-PH probe, 42-drain ball valve, 43-arch pipeline. [Specific implementation method]

[0018] Embodiment 1:

[0019] See also Figure 1 , Figure 2 , Figure 3 The utility model discloses a high-efficiency gas-liquid neutralization reaction device for alkaline sewage in a concrete mixing station, comprising a tower barrel 1, a barrel cover 10, an external water inlet pipe 2, an internal water inlet main pipe 20, a water inlet branch 21, a nozzle 22, an air inlet pipe 3, an air outlet pipe 30, a water outlet pipe 4, and a valve 40. A barrel cover 10 is installed on the top of the tower barrel 1, and a liquid level meter 11 is installed on the tower barrel 1.

[0020] An internal water inlet main pipe 20 is provided inside the tower barrel 1, and a plurality of water inlet branches 21 are connected to the internal water inlet main pipe 20. Each water inlet branch 21 is provided with a nozzle 22, and the nozzle 22 is a non-clogging atomizing nozzle. The external water inlet pipe 2 passes through the barrel wall of the tower barrel 1 and is connected to the internal water inlet main pipe 20, and the external water inlet pipe 2 is connected to the water supply system.

[0021] An air outlet pipe 30 is provided inside the tower barrel 1, and the air outlet pipe 30 is close to the bottom of the tower barrel 1. A plurality of air outlet holes are provided on the air outlet pipe 30. An air vent pipe 12 is fixed on the upper outer wall of the tower barrel 1, and the air vent pipe 12 is connected to the inside of the tower barrel 1. The air vent pipe 12, the internal water inlet main pipe 20, the water inlet branch pipe 21, and the nozzle 22 are all located above the air outlet pipe 30. The air inlet pipe 3 passes through the barrel wall of the tower barrel 1 and is connected to the air outlet pipe 30, and the air inlet pipe 3 is connected to the air supply system.

[0022] The bottom of the tower is connected with a water outlet pipe 4, on which a valve 40 is provided, and the valve 40 is a ball valve.

[0023] The external water inlet pipe 2 is connected to the middle part of the internal water inlet main pipe 20. The internal water inlet main pipe 20 is vertically arranged and located on the vertical center axis of the tower barrel 1. The water inlet branch 21 is perpendicular to the internal water inlet main pipe 20. The water inlet branch 21 is spirally arranged downward on the internal water inlet main pipe 20. The nozzle 22 is located at the bottom of the end of the water inlet branch 21.

[0024] The vent pipe 12 , the internal water inlet main pipe 20 , the water inlet branch pipe 21 , and the nozzle 22 are all located in the middle and upper part of the tower barrel 1 .

[0025] Embodiment 2:

[0026] See also Figure 4 On the basis of the first embodiment, the outlet pipe 4 is provided with a PH probe 41 for detecting the PH value of the water inside the outlet pipe 4, and the outlet pipe 4 is provided with an emptying ball valve 42 matched with the PH probe 41, and the PH probe 41 and the air supply system are both controlled by an automatic control system.

[0027] Embodiment three:

[0028] See also Figure 5 On the basis of the second embodiment, the outlet pipe 4 is provided with an upwardly arched pipe 43, the arched pipe 43 is located downstream of the PH probe 41, and the highest point of the arched pipe 43 is higher than the water inlet end of the outlet pipe 4 and the PH probe 41.

[0029] Working process of this utility model:

[0030] During the operation of the utility model alkaline sewage gas-liquid efficient neutralization reaction device for concrete mixing station, sewage passes through the water supply system in sequence through the external water inlet pipe 2, the internal water inlet main pipe 20, the water inlet branch pipe 21 and finally is ejected through the nozzle 22, and carbon dioxide passes through the air supply system in sequence through the air inlet pipe 3, the air outlet pipe 30 and finally leaves through the air outlet. Since the air outlet pipe 30 is located at the bottom of the tower 1 and the nozzle is located at the middle and upper part of the tower 1, the ejected sewage moves downward in the form of water mist, and the carbon dioxide moves upward and fully contacts with the water mist. The neutralization reaction of sewage and carbon dioxide is thorough and efficient, and the excess carbon dioxide leaves from the vent pipe 12, and the reacted sewage leaves from the water outlet pipe 4.

[0031] During this process, the opening degree of the ball valve on the water outlet pipe 4 needs to be adjusted to balance the water outlet with the water inlet, and to ensure that there is a certain liquid level at the bottom of the reaction tower to prevent carbon dioxide gas from escaping from the water outlet.

[0032] At the same time, during this process, the PH probe is used to monitor the PH value of the water quality at the outlet, and synchronizes with the automatic regulating valve on the gas supply system through the automatic control system. When the PH value of the water quality at the outlet is greater than 7, the PH probe transmits an electrical signal to the automatic control system, and the control system sends an instruction to the automatic regulating valve on the gas supply system. At this time, the gas regulating valve automatically adjusts the valve to increase the gas flow; when the PH value of the water quality at the outlet is less than 7, the PH probe transmits an electrical signal to the automatic control system, and the control system sends an instruction to the automatic regulating valve on the gas supply system. At this time, the gas regulating valve automatically adjusts the valve to reduce the gas flow. The synergistic effect of the PH probe and the automatic regulating valve allows the alkaline sewage to obtain relatively stable water quality after carbon dioxide neutralization treatment.

[0033] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Concrete mixing station alkaline sewage gas-liquid efficient neutralization reaction device, characterized by: The tower barrel (1) comprises a barrel cover (10), an external water inlet pipe (2), an internal water inlet main pipe (20), a water inlet branch pipe (21), a nozzle (22), an air inlet pipe (3), an air outlet pipe (30), a water outlet pipe (4), and a valve (40). The barrel cover (10) is installed on the top of the tower barrel (1). A liquid level meter (11) is installed on the tower barrel (1). An internal water inlet main pipe (20) is provided inside the tower barrel (1). A plurality of water inlet branch pipes (21) are connected to the internal water inlet main pipe (20). Each water inlet branch (21) is provided with a nozzle (22). The external water inlet pipe (2) passes through the barrel wall of the tower barrel (1) and is connected to the internal water inlet main pipe (20). The external water inlet pipe (2) is connected to the internal water inlet main pipe (20). The tower barrel (1) is connected to a water supply system, an air outlet pipe (30) is provided inside the tower barrel (1), the air outlet pipe (30) is close to the bottom of the tower barrel (1), and a plurality of air outlet holes are provided on the air outlet pipe (30). An air vent pipe (12) is fixed on the upper outer wall of the tower barrel (1), and the air vent pipe (12) is connected to the inside of the tower barrel (1). The air vent pipe (12), the internal water inlet main pipe (20), the water inlet branch pipe (21), and the nozzle (22) are all located above the air outlet pipe (30). The air inlet pipe (3) passes through the barrel wall of the tower barrel (1) and is connected to the air outlet pipe (30). The air inlet pipe (3) is connected to the air supply system. The bottom of the tower barrel is connected to a water outlet pipe (4), and a valve (40) is provided on the water outlet pipe (4).

2. The high-efficiency gas-liquid neutralization reaction device for alkaline sewage in a concrete mixing station according to claim 1, characterized in that: The water outlet pipe (4) is provided with a pH probe (41) for detecting the pH value of water inside the water outlet pipe (4), and the water outlet pipe (4) is provided with an exhaust ball valve (42) matched with the pH probe (41). The pH probe (41) and the air supply system are both controlled by an automatic control system.

3. The high-efficiency gas-liquid neutralization reaction device for alkaline sewage in a concrete mixing station according to claim 2, characterized in that: The water outlet pipe (4) is provided with a section of an upwardly arched pipeline (43), the arched pipeline (43) is located downstream of the pH probe (41), and the highest point of the arched pipeline (43) is higher than the water inlet end of the water outlet pipe (4) and the pH probe (41).

4. The gas-liquid efficient neutralization reaction device for alkaline sewage in a concrete mixing station according to claim 1, characterized in that: The external water inlet pipe (2) is connected to the middle of the internal water inlet main pipe (20), the internal water inlet main pipe (20) is vertically arranged and located on the vertical center axis of the tower barrel (1), the water inlet branch (21) is perpendicular to the internal water inlet main pipe (20), the water inlet branch (21) is spirally arranged downward on the internal water inlet main pipe (20), and the nozzle (22) is located at the bottom of the end of the water inlet branch (21).

5. The gas-liquid efficient neutralization reaction device for alkaline sewage in a concrete mixing station according to claim 1, characterized in that: The valve (40) is a ball valve.

6. The gas-liquid efficient neutralization reaction device for alkaline sewage in a concrete mixing station according to claim 1, characterized in that: The vent pipe (12), the internal water inlet main pipe (20), the water inlet branch pipe (21), and the nozzle (22) are all located in the middle and upper part of the tower barrel (1).

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