Phosphate fertilizer tail gas treatment device

Abstract

The utility model relates to the technical field of phosphate fertilizer tail gas treatment, and discloses a phosphate fertilizer tail gas treatment device which comprises a spray tower, a cooling assembly, an air exhaust assembly and a dust filtering assembly, and the spray tower is provided with a tail gas inlet and an exhaust port; the cooling assembly comprises a cooling tank, cooling liquid is arranged in the cooling tank, a first air inlet and a first air outlet are formed in the cooling tank, and the air inlet is located below the liquid level of the cooling liquid; the gas inlet end of the gas extraction assembly is communicated with the gas outlet, the gas outlet end is communicated with the gas inlet, and the gas extraction assembly is used for extracting gas in the spray tower into the cooling tank; the dust filtering assembly is provided with a second air inlet and a second air outlet, and the second air inlet is communicated with the first air outlet and used for filtering particulate matter in passing air. As the dust filtering assembly is located behind the spray tower, corrosive substances in the tail gas can be prevented from being in direct contact with the dust filtering assembly, and the dust filtering assembly is prevented from being corroded by the corrosive substances in the tail gas.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a phosphatic fertilizer tail gas treatment device. Background Art

[0002] Phosphatic fertilizer tail gas refers to the waste gas generated during the production process of phosphatic fertilizer, and these waste gases contain particulate matter, sulfur dioxide, etc.

[0003] The patent publication No. CN220424915U discloses a dust collector for phosphatic fertilizer blast furnace tail gas, which includes a dust removal box. A spray pipe is installed inside the dust removal box, an electromagnetic pulse valve is installed on one side of the spray pipe, blowing pipes are installed at equal intervals at the bottom end of the spray pipe, dust removal net bags are installed at the bottom ends of the blowing pipes, a discharge port is installed at the bottom end of the dust removal box, an air outlet pipe is installed at the top end of the dust removal box, a connecting pipe is installed at the bottom end of one side of the dust removal box, a cooling box is installed on one side of the connecting pipe, a spray head is installed at the top end inside the cooling box, and nozzles are evenly installed at the bottom end of the spray head. Installation seats are fixed on both sides inside the cooling box, and a first filter screen is movably arranged on the inner side wall of the installation seat. A water tank is arranged at the bottom end inside the cooling box, and an air inlet is arranged at the top end of one side of the cooling box.

[0004] When the above-mentioned tail gas dust collector treats tail gas, it first adsorbs and cools the tail gas by spraying. However, when the high-temperature tail gas contacts the spray, a large amount of water vapor will be formed. The water vapor and the gas will together enter the dust removal box, and the dust removal is carried out through the dust removal net bags in the dust removal box. When the gas containing a large amount of water vapor contacts the dust removal net bags, the water vapor will moisten the dust removal net bags, and the moist dust removal net bags will adhere to dust, thereby blocking the dust removal net bags and affecting the treatment speed of the tail gas. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a phosphatic fertilizer tail gas treatment device to solve the technical problem that the water vapor formed during the treatment of tail gas in the prior art will affect the treatment of tail gas.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a phosphatic fertilizer tail gas treatment device, which includes a spray tower, a cooling component, an air extraction component and a dust filtration component. The spray tower has a tail gas inlet and an exhaust port; the cooling component includes a cooling tank, a coolant is arranged inside the cooling tank, the cooling tank is provided with a first air inlet and a first air outlet, and the air inlet is located below the liquid level of the coolant; the air inlet end of the air extraction component is communicated with the exhaust port, and the air outlet end is communicated with the air inlet, and is used for pumping the gas in the spray tower into the cooling tank; the dust filtration component has a second air inlet and a second air outlet, and the second air inlet is communicated with the first air outlet, and is used for filtering the particulate matter in the passing gas.

[0008] In one embodiment, the cooling tank includes a tank body and an intake pipe. The interior of the tank body is hollow and is provided with a first air outlet communicating with the interior of the tank body. A coolant is provided inside the tank body. The intake pipe is connected to the tank body, and one end of the intake pipe is located below the liquid level of the coolant, and the other end of the intake pipe communicates with the exhaust port.

[0009] In one embodiment, the cooling assembly further includes a liquid storage pool, in which the coolant is provided and which is communicated with the tank body.

[0010] In one embodiment, the cooling assembly further includes a circulation pump. The liquid inlet end of the circulation pump communicates with the liquid storage pool, and the liquid outlet end of the circulation pump communicates with the tank body.

[0011] In one embodiment, the cooling tank further includes a liquid level gauge, which is arranged on the tank body and is used to detect the liquid level inside the tank body.

[0012] In one embodiment, the cooling assembly further includes a first connecting pipe and a second connecting pipe. The first connecting pipe communicates with the tank body and the liquid storage pool respectively, and the second connecting pipe communicates with the liquid outlet end of the circulation pump and the tank body respectively.

[0013] In one embodiment, the cooling assembly further includes a temperature reduction member, which is arranged between the second connecting pipe and the liquid outlet end of the circulation pump and is used to cool the passing coolant.

[0014] In one embodiment, the first connecting pipe is a flexible pipe.

[0015] In one embodiment, the cooling assembly further includes a particle filter, which is arranged between the first connecting pipe and the liquid storage pool and is used to filter the flowing fluid.

[0016] In one embodiment, the particle filter is detachably connected to both the first connecting pipe and the liquid storage pool.

[0017] Compared with the prior art, the phosphatic fertilizer tail gas treatment device provided by the utility model introduces the tail gas into the spray tower through the tail gas inlet of the spray tower. Inside the spray tower, the tail gas contacts the liquid sprayed down, thereby absorbing or neutralizing some harmful substances in the tail gas. The treated gas is discharged from the exhaust port of the spray tower. The air extraction component pumps the gas discharged from the exhaust port into the cooling tank, and the gas flows out from below the liquid level of the coolant in the cooling tank. When flowing out, the water vapor in the gas is pre-condensed into water droplets, and the water droplets are mixed with the coolant to remove the water vapor in the gas formed after spraying, avoiding the water vapor from wetting the dust filtration component. The gas after cooling treatment enters the dust filtration component, and the dust contained in the gas is filtered through the dust filtration component. Through the cooperation of the above components, the harmful substances in the tail gas can be effectively removed. At the same time, since the dust filtration component is located behind the spray tower, it can prevent the corrosive substances in the tail gas from directly contacting the dust filtration component and avoid the dust filtration component from being corroded by the corrosive substances in the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic structural diagram of a phosphatic fertilizer tail gas treatment device provided by an embodiment of the utility model;

[0019] Figure 2 FIG. 10 is a schematic structural diagram of a cooling component in a phosphatic fertilizer tail gas treatment device provided by an embodiment of the utility model.

[0020] DESCRIPTION OF THE REFERENCE NUMERALS:

[0021] Spray tower 1;

[0022] Cooling component 2;

[0023] Cooling tank 21;

[0024] Tank body 211;

[0025] Intake pipe 212;

[0026] Liquid level gauge 213;

[0027] Liquid storage pool 22;

[0028] Circulation pump 23;

[0029] First connecting pipe 24;

[0030] Second connecting pipe 25;

[0031] Temperature reduction member 26;

[0032] Particle filter 27;

[0033] Air extraction component 3;

[0034] Dust filtration component 4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0036] In order to solve the technical problem that the water vapor formed during the treatment of tail gas will affect the tail gas treatment, the present utility model provides a phosphate fertilizer tail gas treatment device, which can realize the treatment of phosphate fertilizer tail gas while avoiding the water vapor formed during the tail gas treatment from hindering the tail gas treatment speed.

[0037] It should be noted that the phosphate fertilizer tail gas treatment device described in the present utility model is used for but not limited to the tail gas treatment of phosphate fertilizer, etc. For the convenience of description, in the present utility model, only the application of the phosphate fertilizer tail gas treatment device to the tail gas treatment of phosphate fertilizer is taken as an example for description, and the principle of the application of the phosphate fertilizer tail gas treatment device to other types of equipment is substantially the same as that applied to the tail gas treatment of phosphate fertilizer, and will not be elaborated one by one here.

[0038] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a phosphate fertilizer tail gas treatment device in an embodiment of the present utility model. The phosphate fertilizer tail gas treatment device includes a spray tower 1, a cooling component 2, an air extraction component 3 and a dust filtration component 4. The spray tower 1 has a tail gas inlet and an exhaust port; the cooling component 2 includes a cooling tank 21. There is a coolant in the cooling tank 21. The cooling tank 21 is provided with a first air inlet and a first air outlet. The air inlet of the cooling tank 21 is located below the liquid level of the coolant in the cooling tank 21; the air inlet end of the air extraction component 3 is connected to the exhaust port of the cooling tank 21, and the air outlet end is connected to the air inlet of the cooling tank 21, and is used to draw the gas in the spray tower 1 into the cooling tank 21; the dust filtration component 4 has a second air inlet and a second air outlet. The second air inlet of the cooling tank 21 is connected to the first air outlet of the cooling tank 21, and is used to filter the particulate matter in the passing gas.

[0039] Specifically, the tail gas is passed into the spray tower 1 from the tail gas inlet of the spray tower 1. In the spray tower 1, the tail gas contacts with the sprayed liquid, thereby absorbing or neutralizing some harmful substances in the tail gas, and the treated gas is discharged from the spray tower 1 from the exhaust port; the exhaust component 3 draws the gas discharged from the exhaust port into the cooling tank 21, and the gas flows out from below the liquid surface of the coolant in the cooling tank 21. When flowing out, the water vapor in the gas is pre-condensed and condensed into water droplets, and the water droplets are mixed with the coolant, so as to remove the water vapor in the gas formed after spraying, and prevent the water vapor from wetting the dust filter component 4. The gas after cooling treatment enters the dust filter component 4, and the dust contained in the gas is filtered by the dust filter component 4. Through the cooperation of the above components, the harmful substances in the tail gas can be effectively removed; at the same time, because the dust filter component 4 is located after the spray tower 1, the corrosive substances in the tail gas can be prevented from directly contacting the dust filter component 4, and the dust filter component 4 can be prevented from being corroded by the corrosive substances in the tail gas.

[0040] It should be understood that the liquid sprayed in the spray tower 1 is usually a single alkaline adsorbent, a layered alkaline adsorbent and an acidic adsorbent, a sodium hypochlorite adsorbent, and the like.

[0041] It should be understood that the coolant in the cooling tank 21 is usually water, ice salt water, etc.

[0042] It should be understood that the air extraction component 3 can be a negative pressure fan, an exhaust fan, etc.

[0043] It should be understood that the dust filtering assembly 4 can be a bag filter, a pulse bag filter, an electrostatic precipitator, or the like.

[0044] like Figure 2 As shown, in one embodiment, the cooling tank 21 includes a tank body 211 and an air inlet pipe 212. The interior of the tank body 211 is hollow and has a first air outlet connected to the interior of the tank body 211. Cooling liquid is arranged in the tank body 211. The air inlet pipe 212 is connected to the tank body 211, and one end of the air inlet pipe 212 is located below the liquid level of the cooling liquid, and the other end of the air inlet pipe 212 is connected to the exhaust port.

[0045] When the gas discharged from the exhaust port of the spray tower 1 enters the cooling tank 21 under the action of the exhaust assembly 3, it enters the air inlet pipe 212 and passes through the air inlet pipe 212 to below the liquid surface of the coolant, so that the gas can have sufficient contact with the coolant.

[0046] like Figure 2 As shown, in one embodiment, the cooling assembly 2 further includes a liquid reservoir 22 , in which coolant is arranged and the liquid reservoir 22 is connected to the tank body 211 .

[0047] By providing a liquid storage tank 22 which stores coolant, the coolant in the tank body 211 can be replenished in a timely manner to maintain the amount of coolant in the tank body 211.

[0048] As Figure 2 shown, in one embodiment, the liquid storage tank 22 is arranged below the tank body 211, such that the coolant in the tank body 211 can flow into the liquid storage tank 22 spontaneously. It should be understood that part of the liquid storage tank 22 can also be higher than the tank body 211.

[0049] As Figure 2 shown, in one embodiment, the cooling assembly 2 further includes a circulation pump 23. The liquid inlet end of the circulation pump 23 is communicated with the liquid storage tank 22, and the liquid outlet end is communicated with the tank body 211.

[0050] By providing the circulation pump 23, the circulation pump 23 can drive the coolant in the tank body 211 to circulate between the tank body 211 and the liquid storage tank 22, which can cool down the coolant in the tank body 211. Moreover, the flowing coolant increases the contact with the gas entering the tank body 211, and can fully absorb the water vapor in the gas.

[0051] As Figure 2 shown, in one embodiment, the cooling tank 21 further includes a liquid level gauge 213. The liquid level gauge 213 is arranged on the tank body 211 for detecting the liquid level in the tank body 211.

[0052] By providing the liquid level gauge 213, the liquid level of the coolant in the tank body 211 can be monitored in real time.

[0053] As Figure 2 shown, in one embodiment, the cooling assembly 2 further includes a first connecting pipe 24 and a second connecting pipe 25. The first connecting pipe 24 is respectively communicated with the tank body 211 and the liquid storage tank 22, and the second connecting pipe 25 is respectively communicated with the liquid outlet end of the circulation pump 23 and the tank body 211.

[0054] By providing the first connecting pipe 24, the first connecting pipe 24 realizes the communication between the tank body 211 and the liquid storage tank 22. By providing the second connecting pipe 25, the liquid outlet end of the circulation pump 23 is communicated with the tank body 211.

[0055] As Figure 2 shown, in one embodiment, the cooling assembly 2 further includes a temperature reducing member 26. The temperature reducing member 26 is arranged between the second connecting pipe 25 and the liquid outlet end of the circulation pump 23. The liquid inlet end of the temperature reducing member 26 is communicated with the liquid outlet end of the circulation pump 23, and the liquid outlet end of the temperature reducing member 26 is communicated with the liquid inlet end of the second connecting pipe 25 for cooling the passing coolant.

[0056] By providing a cooling member 26, the cooling member 26 can cool the flowing coolant, enabling the coolant that adsorbs the heat of the exhaust gas to release heat when flowing through the cooling member 26.

[0057] It should be understood that the cooling member 26 can be a cooling tower, a chiller, an evaporative cooler, etc.

[0058] In one embodiment, the first connecting pipes 24 are all flexible hoses.

[0059] By setting the first connecting pipes 24 as flexible hoses, when impurities flow in the coolant, they will adhere to the inner wall of the first connecting pipes 24 and solidify into dirt on the inner wall of the first connecting pipes 24, hindering the flow of the coolant. In this embodiment, by setting the first connecting pipes 24 as flexible hoses, by squeezing the flexible hoses, the impurities solidified on the first connecting pipes 24 can be broken, and the impurities solidified on the first connecting pipes 24 can be cleaned.

[0060] As Figure 2 shown, in one embodiment, the cooling assembly 2 further includes a particle filter 27, and the particle filter 27 is disposed between the first connecting pipe 24 and the liquid storage tank 22 for filtering the flowing fluid.

[0061] By providing the particle filter 27, the particle filter 27 can filter the circulating coolant to remove the particulate impurities in the coolant and avoid clogging of the circulating pipeline by impurities.

[0062] As Figure 2 shown, in one embodiment, the particle filter 27 is detachably connected to both the first connecting pipe 24 and the liquid storage tank 22.

[0063] With the above arrangement, when the particle filter 27 has been used for a period of time, the particle filter 27 can be detached from between the first connecting pipe 24 and the liquid storage tank 22 to clean the impurities filtered out by the particle filter 27 or replace it with a new particle filter 27.

[0064] It should be understood that the particle filter 27 and the first connecting pipe 24 and the liquid storage tank 22 can be detachably connected by flanges and threads.

[0065] It should be understood that the particle filter 27 can be a Y-type filter, a T-type filter, a basket filter, etc.

[0066] The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A phosphate fertilizer tail gas treatment device, characterized in that: include: A spray tower having an exhaust gas inlet and an exhaust port; A cooling assembly, comprising a cooling tank, wherein a coolant is arranged in the cooling tank, and the cooling tank is provided with a first air inlet and a first air outlet, wherein the air inlet is located below the liquid level of the coolant; An air extraction component, whose air inlet end is connected to the exhaust port and whose air outlet end is connected to the air inlet, is used to extract the gas in the spray tower into the cooling tank; and The dust filtering component has a second air inlet and a second air outlet, wherein the second air inlet is communicated with the first air outlet and is used for filtering particulate matter in the passing gas.

2. The phosphate fertilizer tail gas treatment device according to claim 1, characterized in that: The cooling tank includes a tank body and an air inlet pipe. The interior of the tank body is hollow and is provided with the first air outlet connected to the interior of the tank body. The coolant is arranged in the tank body. The air inlet pipe is connected to the tank body, and one end of the air inlet pipe is located below the liquid level of the coolant, and the other end of the air inlet pipe is connected to the exhaust port.

3. The phosphate fertilizer tail gas treatment device according to claim 2, characterized in that: The cooling component also includes a liquid reservoir, in which the cooling liquid is arranged and the liquid reservoir is communicated with the tank body.

4. The phosphate fertilizer tail gas treatment device according to claim 3, characterized in that: The cooling component also includes a circulation pump, wherein a liquid inlet end of the circulation pump is connected to the liquid storage tank, and a liquid outlet end of the circulation pump is connected to the tank body.

5. The phosphate fertilizer tail gas treatment device according to claim 4, characterized in that: The cooling tank further comprises a liquid level meter, which is arranged on the tank body and is used to detect the liquid level in the tank body.

6. The phosphate fertilizer tail gas treatment device according to claim 4, characterized in that: The cooling assembly further includes a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is connected to the tank body and the liquid storage tank respectively, and the second connecting pipe is connected to the liquid outlet end of the circulation pump and the tank body respectively.

7. The phosphate fertilizer tail gas treatment device according to claim 6, characterized in that: The cooling assembly further includes a temperature reducing component, which is disposed between the second connecting pipe and the liquid outlet end of the circulating pump and is used to reduce the temperature of the cooling liquid passing through the circulating pump.

8. The phosphate fertilizer tail gas treatment device according to claim 6, characterized in that: The first connecting pipe is a hose.

9. The phosphate fertilizer tail gas treatment device according to claim 7, characterized in that: The cooling assembly further includes a particle filter, which is disposed between the first connecting pipe and the liquid storage tank and is used for filtering the fluid flowing therethrough.

10. The phosphate fertilizer tail gas treatment device according to claim 9, characterized in that: The particle filter is detachably connected to the first connecting pipe and the liquid storage tank.

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