Liquid level control system of spray tower

Abstract

The utility model provides a liquid level control system of a spray tower, and relates to the technical field of spray towers. The spray tower comprises a spray tower body, a water supplementing pipe is communicated with the spray tower body, a spray unit is arranged in the spray tower body, a waste gas pipe is communicated with the spray tower body at the lower part of the spray unit, a liquid level detection sensor is arranged on the spray tower body, and a circulating pipeline is arranged between the spray unit and the bottom of the spray tower body. The circulating pipeline conveys liquid at the bottom of the spray tower body to the spray unit, the bottom of the spray tower body is communicated with a blow-off pipe, the blow-off pipe is provided with a control valve, the control valve is electrically connected with the liquid level detection sensor, and the control valve is automatically opened and closed according to liquid level information monitored by the liquid level detection sensor. According to the spray tower disclosed by the utility model, the washing liquid can be replaced without stopping running.

Description

Technical Field

[0001] This utility model relates to the field of spray tower technology, and specifically to a spray tower liquid level control system. Background Technology

[0002] A spray tower, also known as a scrubbing tower or wet scrubbing tower, is a device that removes pollutants from waste gas through gas-liquid contact. Its core function is to use nozzles to spray circulating water or other absorbent liquids into fine droplets, which then physically absorb, chemically react with, or dissolve the pollutants in the waste gas, thereby purifying the gas. Spray towers are compact, easy to operate, and highly efficient, making them suitable for treating various industrial waste gases.

[0003] Currently, after long-term use, the liquid inside the scrubbing tower will accumulate pollutants, which will reduce the scrubbing tower's ability to purify waste gas. It is necessary to stop the operation periodically, drain the contaminated liquid inside the tower, and replenish it with new scrubbing liquid before it can be reused. Utility Model Content

[0004] The purpose of this invention is to develop a spray tower level control system that allows the washing liquid to be replaced without stopping the operation of the spray tower.

[0005] This utility model is achieved through the following technical solution:

[0006] A spray tower liquid level control system, comprising:

[0007] Spray tower body;

[0008] The water supply pipe is connected to the main body of the spray tower;

[0009] The spraying unit is located inside the spraying tower body;

[0010] The exhaust pipe is connected to the spray tower body at the bottom of the spray unit;

[0011] The liquid level detection sensor is installed on the body of the spray tower;

[0012] The spray unit is connected to the bottom of the spray tower body via a circulation pipeline. The circulation pipeline delivers the liquid from the bottom of the spray tower body to the spray unit. The bottom of the spray tower body is connected to a drain pipe, which is equipped with a control valve. The control valve is electrically connected to a liquid level detection sensor and automatically opens and closes based on the liquid level information monitored by the liquid level detection sensor.

[0013] Optionally, the diameter of the sewage pipe is larger than the diameter of the water supply pipe.

[0014] Optionally, the circulation pipeline includes a drain pipe connected to the bottom of the spray tower body and a water supply pipe connected to the spray unit. Two pumping pipes are connected to the drain pipe, and centrifugal pumps are installed on the pumping pipes. The two pumping pipes are connected to the water supply pipe.

[0015] Optionally, the sewage pipe is connected to the liquid drain pipe.

[0016] Optionally, a flushing pipe is connected between the water supply pipe and the liquid level detection sensor, and a valve is provided on the flushing pipe.

[0017] Optionally, the spray tower body is provided with two sets of spray units arranged vertically.

[0018] Optionally, the spray unit includes multiple spray pipes arranged at equal intervals, and the bottom of the spray pipes inside the spray tower body is provided with multiple spray nozzles at equal intervals.

[0019] Optionally, the spray nozzle is a spiral nozzle made of silicon carbide.

[0020] Optionally, the top of the spray tower body is connected to a discharge pipe, and two exhaust pipes are connected to the discharge pipe. Negative pressure fans are installed on both exhaust pipes, and the exhaust pipes are connected to flame arresters.

[0021] The beneficial effects of this utility model are:

[0022] This invention uses the time required for the liquid level to rise to a set value during replenishment as the basis for determining when to replace the washing liquid in the spray tower body. This enables automatic sewage discharge and replenishment of the washing liquid in the spray tower body, allowing the washing tower body to automatically replace the washing liquid at regular intervals without stopping operation, thus ensuring the purification effect of the washing tower body on the exhaust gas. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the present utility model.

[0025] Attached reference numerals: 1. Spray tower body; 2. Water supply pipe; 3. Discharge pipe; 4. Exhaust pipe; 5. Negative pressure fan; 6. Waste gas pipe; 7. Spray unit; 8. Water supply pipe; 9. Flushing pipe; 10. Liquid level detection sensor; 11. Drain pipe; 12. Sewage pipe; 13. Pumping pipe; 14. Centrifugal pump; 15. Mechanical seal water pipeline. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1 As shown, this utility model discloses a spray tower liquid level control system, including a spray tower body 1, a water supply pipe 2 connected to the upper part of the spray tower body 1, two sets of spray units 7 arranged vertically inside the spray tower body 1, and an exhaust gas pipe 6 connected to the spray tower body 1 below the two spray units 7.

[0030] The top of the spray tower body 1 is connected to a discharge pipe 3, and two exhaust pipes 4 are connected to the discharge pipe 3. Negative pressure fans 5 are installed on both exhaust pipes 4, and the exhaust pipes 4 are connected to flame arresters.

[0031] The bottom of the spray tower body 1 is provided with a drain pipe 11, and two pumping pipes 13 are connected to the drain pipe 11. Each pumping pipe 13 is equipped with a centrifugal pump 14. Both pumping pipes 13 are connected to the water supply pipe 8, and the water supply pipe 8 is connected to the two spraying units 7.

[0032] The spray unit 7 includes three spray pipes arranged at equal intervals, which are connected to the water supply pipe 8. Multiple spray nozzles are provided at equal intervals at the bottom of the spray pipes inside the spray tower body 1. The spray nozzles are spiral nozzles made of silicon carbide.

[0033] The spray tower body 1 is equipped with a liquid level detection sensor 10, which monitors the liquid level in the spray tower body 1. The water supply pipe 8 is also connected to the liquid level detection sensor 10 by a flushing pipe 9. The flushing pipe 9 is equipped with a valve, and the liquid level detection sensor 10 is flushed through the flushing pipe 9 during maintenance.

[0034] A drain pipe 12 is connected to the drain pipe 11. A pneumatic control valve is installed on the drain pipe 12, which is electrically connected to a liquid level sensor 10. The pneumatic control valve automatically opens and closes based on the liquid level information monitored by the liquid level sensor 10. The diameter of the drain pipe 12 and the drain pipe 11 between the drain pipe 12 and the spray tower body 1 is larger than the diameter of the water supply pipe 2, ensuring that the flow rate in the drain pipe 12 is greater than the flow rate in the water supply pipe 2 when the drain pipe 12 discharges sewage.

[0035] The negative pressure fan 5 and the centrifugal pump 14 are also connected to an organic sealing water pipeline 15.

[0036] The upper limit of the liquid level is set to L0 and the lower limit of the liquid level is set to L1. The real-time liquid level in the spray tower body 1 monitored by the liquid level detection sensor 10 is L2. The water supply pipe 2 delivers liquid to the spray tower body 1 to replenish the liquid level. The centrifugal pump 14 operates to pump the liquid at the bottom of the spray tower body 1 into the two spray units 7 through the drain pipe 11, the pumping pipe 13, and the water supply pipe 8. The two spray units 7 spray out the liquid and make full contact with the exhaust gas sent into the spray tower body 1 by the exhaust gas pipe 6. After the exhaust gas is purified, it is discharged to the flame arrester through the discharge pipe 3 and the exhaust pipe 4 at the top of the spray tower body 1 and then discharged into the atmosphere. As the water supply pipe 2 continuously replenishes the liquid level in the spray tower body 1, when L2≥L0, the pneumatic control valve of the drain pipe 12 opens to discharge sewage. Since the flow rate of sewage discharged by the drain pipe 12 is greater than the flow rate in the water supply pipe 2, L2 gradually decreases. When L2=L1, the pneumatic control valve of the drain pipe 12 closes to stop the sewage discharge, while the water supply pipe 2 continues to replenish the liquid level, and the above process is repeated.

[0037] This invention uses the time required for the liquid level in the tower to rise to a set value during replenishment as the basis for determining the replacement of the washing liquid in the spray tower body 1, thereby realizing the automatic discharge and replenishment of the washing liquid in the spray tower body 1. The washing tower body can achieve timed automatic replacement of the washing liquid without stopping operation, so as to ensure the purification effect of the washing tower body on the exhaust gas.

[0038] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A spray tower level control system characterized by, The application relates to a spray tower body, a water supplement pipe in communication with the spray tower body, a spray unit arranged in the spray tower body, a waste gas pipe in communication with the lower part of the spray unit and the spray tower body, a liquid level detection sensor arranged on the spray tower body, and a circulating pipeline arranged between the spray unit and the bottom of the spray tower body. The diameter of the blowdown pipe is larger than that of the water supplement pipe. The circulating pipeline comprises a liquid discharge pipe in communication with the bottom of the spray tower body and a water supply pipe in communication with the spray unit. The blowdown pipe is in communication with the liquid discharge pipe. The water supply pipe is in communication with the liquid level detection sensor. The spray tower body is provided with two groups of spray units arranged in an up-down mode. The spray unit comprises a plurality of spray pipes arranged in an up-down mode at equal intervals.

2. The spray tower level control system of claim 1, wherein, The spray nozzle is a spiral nozzle made of silicon carbide.

3. The spray tower level control system of claim 1, wherein, The spray tower body is provided with a discharge pipe at the top, two exhaust pipes in communication with the discharge pipe, negative pressure fans arranged on the two exhaust pipes, and a flame arrester in communication with the exhaust pipe.

4. The spray tower level control system of claim 3, wherein, ​ 5. The spray tower level control system of claim 3, wherein, ​ 6. The spray tower level control system of claim 1, wherein, ​ 7. The spray tower level control system of claim 6, wherein, ​ 8. The spray tower level control system of claim 7, wherein, ​ 9. The spray tower level control system of any one of claims 1 to 8, wherein, ​

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