Alkali washing tower with good purification effect

Abstract

The utility model relates to the technical field of alkaline washing towers, and discloses an alkaline washing tower with a good purification effect, which solves the problems in the background technology, and comprises an alkaline washing tower body, a spraying port is arranged at the top of the alkaline washing tower body, an exhaust port is arranged on the alkaline washing tower body, a gas inlet is arranged at the bottom of the alkaline washing tower body, and a gas outlet is arranged at the bottom of the alkaline washing tower body. The gas inlet is connected with the waste gas box, a filler layer is arranged between the gas inlet and the spraying opening, supporting legs are arranged in the alkaline washing tower body, a top cover is arranged on the supporting legs, the top cover is arranged on the upper portion of the gas inlet, a cooler is arranged at the bottom of the top cover, and an output port of the cooler corresponds to the gas inlet. The waste gas treatment device disclosed by the utility model has the effects of efficiently and stably purifying waste gas, simultaneously realizing resource recovery and energy-saving operation, and having remarkable environment-friendly and economic values.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the caustic washing tower technical field, concretely is a caustic washing tower with good purification effect. BACKGROUND

[0002] The caustic washing tower is a kind of equipment widely used in industrial gas purification, mainly used to remove acidic gas (such as SO2, HCl, H2S, etc.) in waste gas, and its working principle is that alkaline solution (such as NaOH, Na2CO3, etc.) reacts with acidic gas to generate neutral salt and water, so as to achieve the purpose of purifying gas.

[0003] The existing caustic washing tower is usually composed of tower body, filler layer, spraying system, demister and other parts, waste gas enters from the bottom, fully contacts with sprayed lye after passing through the filler layer, acidic gas is absorbed by lye and chemical reaction occurs, and the purified gas is discharged from the top of the tower, but the existing caustic washing tower usually does not effectively control the temperature of the gas entering the tower body, and the temperature of the waste gas is usually higher than the appropriate value, and the high temperature of the gas will reduce the solubility of the acidic gas in the lye, thereby reducing the absorption efficiency, therefore, we propose a caustic washing tower with good purification effect. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems raised in the background art, the utility model provides the following technical scheme: a caustic washing tower with good purification effect, comprising a caustic washing tower body, a spraying port is arranged at the top of the caustic washing tower body, an exhaust port is arranged on the caustic washing tower body, an air inlet is arranged at the bottom of the caustic washing tower body, the air inlet is connected with a waste gas box, a filler layer is arranged between the air inlet and the spraying port, a supporting leg is arranged in the caustic washing tower body, a top cover is arranged on the supporting leg, the top cover is arranged on the upper part of the air inlet, a cooler is arranged at the bottom of the top cover, the output port of the cooler corresponds to the air inlet, and the spraying port is connected with a lye box through a connecting channel.

[0005] Preferably, a temperature sensor is arranged at the bottom of the top cover, and the temperature sensor is electrically connected with the cooler, so that the temperature is controlled at 20-25 DEG C through the linkage control of the temperature sensor and the cooler, the temperature of the waste gas is accurately adjusted, and the influence of high or low temperature on the purification effect is avoided.

[0006] Preferably, a discharge port is arranged at the bottom of the caustic washing tower body, an electromagnetic control valve is arranged on the discharge port, and the discharge port is connected with a recycling device, so as to realize automatic discharge and resource recycling of waste liquid, reduce waste and environmental pollution.

[0007] Preferably, a gas distributor is arranged on the air inlet, which is used for uniformly distributing the waste gas entering the tower body and ensuring that the gas fully contacts with the lye.

[0008] Preferably, the connecting channel and the lye box are provided with a pump body, which ensures that the lye can be stably and uniformly sprayed onto the filler layer, improving the purification efficiency.

[0009] Preferably, the lye box is provided with a pH sensor, the lye in the lye box has a pH value of 10-12, and the lye in the lye box has a concentration of 5%-15%. Through the control of the pH sensor and the lye concentration, it is ensured that the lye is always in the best working state, improving the purification effect.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] When working, the waste gas to be treated enters the alkali washing tower body through the gas inlet. Before entering the alkali washing tower, the waste gas is cooled by the cooler. The cooler monitors the waste gas temperature in real time through the temperature sensor and adjusts the cooling intensity through feedback control, so that the waste gas temperature is kept in the appropriate range of 20-50 DEG C. The cooled waste gas is uniformly distributed by the gas distributor and enters the filler layer. The gas distributor ensures that the waste gas uniformly rises in the filler layer, avoiding excessive or insufficient local airflow. The filler layer is composed of high-efficiency filler, which provides a large gas-liquid contact area. The waste gas is fully contacted with the lye in the filler layer, the acidic gas is absorbed by the lye, the lye is transported to the spray port from the lye box through the pump body and the connecting channel, is uniformly sprayed on the filler layer to form a liquid film, the purified gas rises to the top of the tower and is discharged through the exhaust port to reach the emission standard. The reacted lye and the generated salt are discharged through the discharge port, and the electromagnetic control valve realizes automatic discharge of the waste liquid, which can efficiently and stably purify the waste gas, realize resource recovery and energy-saving operation, and has remarkable environmental protection and economic value. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, which is used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0013] Figure 1 It is a schematic view of the overall front view section structure of the utility model;

[0014] In the drawings: 1, alkali washing tower body; 2, spray port; 3, exhaust port; 4, gas distributor; 5, waste gas box; 6, filler layer; 7, top cover; 8, cooler; 9, connecting channel; 10, lye box; 11, pump body; 12, discharge port. DETAILED DESCRIPTION

[0015] Clearly and completely describe the technical scheme in the embodiments of the utility model with the drawings in the embodiments of the utility model below, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0016] By Figure 1 The utility model discloses a caustic washing tower body 1 is provided with the spray opening 2 on the top, is provided with the exhaust port 3 on the caustic washing tower body 1, is provided with the air inlet on the bottom of caustic washing tower body 1, the air inlet is connected with waste gas box 5, and the air inlet is provided with the filler layer 6 between spray opening 2, is provided with the supporting leg in caustic washing tower body 1, is provided with the top cap 7 on the supporting leg, and the top cap 7 is set up on the top of air inlet, and the bottom of top cap 7 is provided with the cooler 8, and the output of cooler 8 corresponds with air inlet, and spray opening 2 is connected with lye box 10 through connecting channel 9.

[0017] The bottom of top cap 7 is provided with temperature sensor, and temperature sensor is electrically connected with cooler 8, and through the linkage control of temperature sensor and cooler, temperature is controlled at 20-25 DEG C, realizes the accurate regulation of waste gas temperature, avoids that temperature is too high or too low and influences purification effect.

[0018] The bottom of caustic washing tower body 1 is provided with the discharge port 12, and the discharge port 12 is provided with electromagnetic control valve, and the discharge port 12 is connected with recovery device, realizes the automatic discharge and resource recovery of waste liquid, reduces waste and environmental pollution.

[0019] The air inlet is provided with gas distributor 4, which is used for uniformly distributing the waste gas into the tower body, and ensuring that the gas is in full contact with the lye.

[0020] Pump body 11 is arranged between connecting channel 9 and lye box 10, so that the lye can be stably and uniformly sprayed onto the filler layer, improving the purification efficiency.

[0021] The lye box 10 is provided with a pH sensor, and the lye in the lye box 10 has a pH value of 10-12 and a concentration of 5%-15%. By controlling the pH sensor and the concentration of the lye, the lye is always in the best working condition, improving the purification effect.

[0022] Working principle: when working, the waste gas to be treated enters the caustic washing tower body 1 through the gas inlet, the waste gas is cooled by the cooler 8 before entering the caustic washing tower, the waste gas temperature is monitored by the temperature sensor in real time, and the cooling intensity is adjusted through feedback control to ensure that the waste gas temperature is maintained in the appropriate range of 20-50℃, the cooled waste gas is uniformly distributed by the gas distributor 4 and enters the filler layer 6, the gas distributor 4 ensures that the waste gas uniformly rises in the filler layer, avoiding local excessive or insufficient gas flow, the filler layer 6 is composed of high-efficiency fillers such as Pall ring, square saddle ring, etc., which provides a large gas-liquid contact area, the waste gas is fully contacted with the alkali solution in the filler layer, and the acidic gas such as SO2, HCl, H2S, etc. is absorbed by the alkali solution, the alkali solution is delivered to the spray nozzle 2 from the alkali solution box 10 through the pump body 11 and the connecting channel 9, is uniformly sprayed on the filler layer to form a liquid film, the purified gas rises to the top of the tower and is discharged through the gas outlet 3 to meet the emission standard, the reacted alkali solution and the generated salt are discharged through the discharge port 12, and the electromagnetic control valve realizes automatic discharge of the waste liquid, which can efficiently and stably purify the waste gas, realizes resource recovery and energy-saving operation, and has remarkable environmental protection and economic value.

[0023] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0024] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An alkaline scrubbing tower with good purification effect, comprising an alkaline scrubbing tower body (1), characterized in that: The alkaline washing tower body (1) is provided with a spray port (2) at the top, an exhaust port (3) on the alkaline washing tower body (1), an air inlet at the bottom of the alkaline washing tower body (1), the air inlet being connected to the waste gas box (5), a packing layer (6) between the air inlet and the spray port (2), a support leg inside the alkaline washing tower body (1), a top cover (7) on the support leg, the top cover (7) being located above the air inlet, a cooler (8) at the bottom of the top cover (7), the output port of the cooler (8) corresponding to the air inlet, and the spray port (2) being connected to the alkali liquid box (10) through a connecting channel (9).

2. The alkaline washing tower with good purification effect according to claim 1, characterized in that: A temperature sensor is provided at the bottom of the top cover (7), and the temperature sensor is electrically connected to the cooler (8).

3. The alkaline washing tower with good purification effect according to claim 2, characterized in that: The bottom of the alkaline washing tower body (1) is provided with a discharge port (12), and an electromagnetic control valve is provided on the discharge port (12). The discharge port (12) is connected to the recovery device.

4. The alkaline washing tower with good purification effect according to claim 3, characterized in that: A gas distributor (4) is provided on the air inlet.

5. The alkaline scrubbing tower with good purification effect according to claim 4, characterized in that: A pump body (11) is provided between the connecting channel (9) and the alkali box (10).

6. The alkaline washing tower with good purification effect according to claim 5, characterized in that: A pH sensor is installed inside the alkali solution box (10). The pH value of the alkali solution in the alkali solution box (10) is 10-12, and the concentration of the alkali solution in the alkali solution box (10) is 5%-15%.

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