CN211462701U - Exhaust gas circulation sprays purifier - Google Patents

Abstract

The utility model relates to the field of waste gas treatment equipment, in particular to a waste gas circulating spray purification device, comprising: a purification box, an air inlet pipe, an air outlet pipe, a guide mechanism and a circulating spray mechanism. The mechanism moves forward in an S-shape, which greatly increases the flow distance of the gas, so that there is sufficient contact time between the exhaust gas and the neutralizing liquid. During the movement, the circulating spray mechanism sprays the neutralizing liquid into the purification box to ensure that the exhaust gas is The acid and alkali substances in the system are completely neutralized, and the neutralized liquid is collected to the bottom of the purification box and recycled under the action of the circulating spray mechanism, which improves the utilization rate of the neutralized liquid.

Description

A waste gas circulating spray purification device

technical field

The utility model relates to the field of waste gas treatment equipment, in particular to a waste gas circulating spray purification device.

Background technique

In the chemical industry, a large amount of acid and alkaline waste gas will be generated in the production process. If it is directly discharged into the atmosphere, it will cause serious pollution. The common method is to neutralize it through a spray device and then discharge it, but the traditional spray purification equipment structure Simple, the neutralizing liquid is sprayed through the spray pipe, and the gas is neutralized in the process of passing through the spray channel, but a large amount of neutralizing liquid needs to be used in this method, and the neutralizing liquid after spraying is discharged as sewage, The cost is high and there is a hidden danger of secondary pollution. At the same time, because the gas flow speed is too fast, complete neutralization cannot be achieved, which affects the purification effect.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a waste gas circulating spraying purification device.

The utility model is realized through the following technical solutions:

A waste gas circulating spray purification device is characterized in that it includes: a purification box, an air inlet pipe, an air outlet pipe, a guide mechanism and a circulating spray mechanism. Move to the direction of the air outlet, during the movement, the circulating spray mechanism sprays the neutralizing liquid into the purification box, the gas is neutralized and purified under the action of the neutralizing liquid, and the neutralizing liquid is collected at the bottom of the purification box and the circulating spraying mechanism acts It is used in the lower cycle, which improves the utilization rate of the neutralizing liquid, and the purified gas is discharged from the gas outlet pipe;

The air inlet pipe and the air outlet pipe are respectively fixed on both ends of the purification box, the air inlet pipe is set at the lower end of the purification box, and the gas outlet pipe is set at the upper end of the purification box. The structure of the lower air outlet and the upper air pipe can increase the flow path of the exhaust gas during the movement in the purification box, thereby increasing the contact time between the exhaust gas and the neutralizing liquid, and improving the reaction rate and purification effect;

The guide mechanism includes a guide plate fixed in the purification box and arranged at an upper and lower interval, the length of the guide plate is greater than half of the height of the purification box, and a gap for gas circulation is left between the two adjacent guide plates to guide the There is also a gap between the plate and the opposite side of the purification box. The exhaust gas moves forward in an S-shape in the guide mechanism, which greatly increases the flow distance of the gas, so that there is sufficient contact time between the exhaust gas and the neutralizing liquid to ensure that the exhaust gas is in the exhaust gas. The acid and alkali substances are completely neutralized;

The circulating spray mechanism includes a spray pipe fixed in the purification box and a return pipe communicated with the bottom of the purification box, a circulating water pump is arranged between the spray pipe and the return pipe, and the two ends of the circulating water pump are respectively The pipeline is connected with the spray pipe and the return pipe, and a return branch pipe is connected between the two adjacent guide plates at the bottom of the purification box, and the return branch pipe is connected with the return pipe. The circulating water pump is collected along the return branch pipe to the return pipe, and finally sprayed out through the spray pipe again, forming a kind of circulation, which improves the utilization rate of the neutralizing liquid.

Preferably, the air inlet pipe is provided with a one-way valve, so that the gas can enter the purification box through the air inlet pipe, and the neutralizing liquid will not flow out from the air inlet pipe.

The beneficial effects of the present utility model are:

The gas enters the purification box from the intake pipe, and moves forward in an S-shape in the guide mechanism, which greatly increases the flow distance of the gas, so that there is sufficient contact time between the exhaust gas and the neutralizing liquid. The neutralizing liquid is sprayed in the purification box to ensure that the acid and alkali substances in the exhaust gas are completely neutralized, and the neutralizing liquid is collected to the bottom of the purification box and recycled under the action of the circulating spray mechanism, which improves the utilization rate of the neutralizing liquid.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present utility model.

In the picture: 1. Purification box, 2. Intake pipe, 3. Outlet pipe, 4. Guide plate, 5. Spray pipe, 6. Return pipe, 7. Circulating water pump, 8. Check valve.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and the best embodiments.

As shown in the figure, the utility model includes: a purification box 1, an air inlet pipe 2, an air outlet pipe 3, a guiding mechanism and a circulating spray mechanism. The gas pipe moves in the direction. During the movement, the circulating spray mechanism sprays the neutralizing liquid into the purification box. The gas is neutralized and purified under the action of the neutralizing liquid, and the neutralizing liquid is collected to the bottom of the purification box and circulated under the action of the circulating spraying mechanism. The utilization rate of the neutralizing liquid is improved, and the purified gas is discharged from the gas outlet pipe;

The air inlet pipe and the air outlet pipe are respectively fixed on both ends of the purification box, the air inlet pipe is set at the lower end of the purification box, and the gas outlet pipe is set at the upper end of the purification box. The structure of the lower air outlet and the upper air pipe can increase the flow path of the exhaust gas during the movement in the purification box, thereby increasing the contact time between the exhaust gas and the neutralizing liquid, and improving the reaction rate and purification effect;

The guide mechanism includes a guide plate 4 that is fixed in the purification box and arranged at an upper and lower interval. The length of the guide plate is greater than half of the height of the purification box, and a gap for gas circulation is left between two adjacent guide plates. There is also a gap between the guide plate and the opposite side of the purification box. The exhaust gas moves forward in an S-shape in the guide mechanism, which greatly increases the flow distance of the gas, so that there is sufficient contact time between the exhaust gas and the neutralizing liquid to ensure that the exhaust gas The acid and alkali substances in the product are completely neutralized;

The circulating spray mechanism includes a spray pipe 5 fixed in the purification box and a return pipe 6 connected to the bottom of the purification box. A circulating water pump 7 is arranged between the spray pipe and the return pipe. The two ends are respectively connected with the spray pipe and the return pipe through pipes. A return branch pipe is connected between the two adjacent guide plates at the bottom of the purification box. The return branch pipe is connected with the return pipe. The neutralized liquid sprayed by the spray pipe is collected in the purification At the bottom of the box, the circulating water pump is collected along the return branch pipe to the return pipe, and finally sprayed out through the spray pipe again, forming a kind of circulation, which improves the utilization rate of the neutralizing liquid.

Preferably, the air inlet pipe is provided with a one-way valve 8, so that the gas can enter the purification box through the air inlet pipe, and the neutralizing liquid will not flow out from the air inlet pipe.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (2)

1. A waste gas circulating spray purification device, characterized in that, comprising: a purification box, an air inlet pipe, an air outlet pipe, a guide mechanism and a circulating spray mechanism, The air inlet pipe and the air outlet pipe are respectively fixed on both ends of the purification box, the air inlet pipe is arranged at the lower end of the cleaning box, and the air outlet pipe is arranged at the upper end of the cleaning box, The guide mechanism includes a guide plate fixed in the purification box and arranged at an upper and lower interval, the length of the guide plate is greater than half of the height of the purification box, and a gap for gas circulation is left between two adjacent guide plates. The circulating spray mechanism includes a spray pipe fixed in the purification box and a return pipe communicated with the bottom of the purification box, a circulating water pump is arranged between the spray pipe and the return pipe, and the two ends of the circulating water pump are respectively It communicates with the spray pipe and the return pipe through pipes. 2 . The exhaust gas circulating spray purification device according to claim 1 , wherein a check valve is provided on the air intake pipe. 3 .

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