Ammonium phosphate production tail gas purification mechanism

Abstract

The utility model relates to the technical field of ammonium phosphate production tail gas, and discloses an ammonium phosphate production tail gas purification mechanism which comprises a cooling bin, a plurality of gas inlets are formed in the side outer wall of the cooling bin, and a gas outlet pipeline is arranged on the side outer wall, away from the gas inlets, of the cooling bin. A tail gas purification tower used for removing ammonia gas and sulfur dioxide in tail gas is arranged on one side of the cooling bin, the tail gas purification tower communicates with the gas outlet pipeline, a plurality of heat conduction pipelines are fixedly installed on the inner wall of the cooling bin, the outer walls of the heat conduction pipelines are all sleeved with outer pipelines, and the heat conduction pipelines communicate with the gas outlet pipeline and the gas inlet; according to the ammonium phosphate production tail gas cooling device, the temperature of harmful tail gas produced by ammonium phosphate can be reduced, so that subsequent purification of the harmful tail gas is facilitated, and then the purification efficiency of the harmful tail gas produced by ammonium phosphate is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tail gas from ammonium phosphate production, and in particular to a tail gas purification mechanism for ammonium phosphate production. Background Art

[0002] With the rapid development of industrialization, energy consumption and environmental protection issues have become increasingly prominent. As an important chemical industry, ammonium phosphate production consumes a lot of energy. During the production of ammonium phosphate, equipment such as the final evaporator will generate a large amount of low-grade waste heat. According to the characteristics of waste heat in the production of ammonium phosphate, a variety of waste heat recovery technologies have been studied, including heat pipe technology, heat pump technology, heat exchanger technology, etc. Ammonium phosphate production will also produce a large amount of tail gas.

[0003] With respect to the above-mentioned related technologies, the inventors believe that a large amount of harmful tail gas will be generated in the existing ammonium phosphate production process, and the temperature of the harmful tail gas from the ammonium phosphate production will affect the purification effect of the tail gas. The harmful tail gas temperature just discharged from the ammonium phosphate production is too high, and the temperature of the tail gas will affect the purification of sulfur dioxide in the tail gas. The high tail gas temperature leads to a decrease in the solubility of sulfur dioxide and a decrease in the desulfurization efficiency. At the same time, the dust removal efficiency is relatively low, which will increase the ash content in the tail gas, making it inconvenient for the subsequent purification effect of the harmful tail gas. Therefore, a tail gas purification mechanism for ammonium phosphate production is proposed to solve the above problems.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0005] In order to solve the above problems, the present application provides a tail gas purification mechanism for ammonium phosphate production.

[0006] The present application provides a tail gas purification mechanism for ammonium phosphate production using the following technical solutions:

[0007] A tail gas purification mechanism for phosphate ammonium production includes a cooling bin, a side outer wall of the cooling bin is provided with a plurality of air inlets, a side outer wall of the cooling bin away from the plurality of air inlets is provided with an air outlet pipe, and a tail gas purification tower for removing ammonia and sulfur dioxide in the tail gas is provided on one side of the cooling bin, and the tail gas purification tower is connected to the air outlet pipe, a plurality of heat conducting pipes are fixedly installed on the inner wall of the cooling bin, the outer walls of the plurality of heat conducting pipes are all sleeved with external pipes, and the plurality of heat conducting pipes are connected to the air outlet pipe and the air inlet, and a supply component for supplying coolant to the plurality of external pipes is provided on the top outer wall of the cooling bin.

[0008] Preferably, the supply assembly includes a storage box, which is fixedly mounted on the upper surface of the cooling bin, a first connecting pipe is provided between the storage box and a plurality of external pipes, and the first connecting pipe is connected to the plurality of external pipes and the storage box, a first pump body is fixedly connected to the upper surface of the cooling bin, and the output end of the first pump body is connected to the first connecting pipe.

[0009] Preferably, a transfer cooling box is fixedly connected to the side outer wall of the cooling bin, and a semiconductor refrigerator for cooling the interior of the transfer cooling box is fixedly installed on the outer wall of the transfer cooling box.

[0010] Preferably, a second connecting pipe is provided between several of the outer pipes and the transfer cooling box, and the second connecting pipe is connected to the several outer pipes and the transfer cooling box, a second pump body is fixedly installed on the outer wall of the transfer cooling box, and the output end of the second pump body is connected to the second connecting pipe.

[0011] Preferably, a delivery pipe is provided between the transfer cooling box and the storage box, and the delivery pipe is connected to the transfer cooling box and the storage box. A third pump body is fixedly installed on the top outer wall of the transfer cooling box, and the output end of the third pump body is connected to the delivery pipe.

[0012] Preferably, a plurality of exhaust fans and intake fans are fixedly mounted on the outer wall of the cooling bin.

[0013] In summary, this application has the following beneficial technical effects:

[0014] 1. By setting up multiple air inlets, harmful tail gas from phosphate ammonium production enters the heat conduction pipe through the multiple air inlets, thereby cooling the harmful tail gas through the coolant in the outer pipe wrapped around the outside of the heat conduction pipe, and the cooled tail gas enters the tail gas purification tower through the air outlet pipe, thereby completing the purification of the cooled tail gas through the tail gas purification tower. Compared with the existing technology, the temperature of the harmful tail gas from phosphate ammonium production can be reduced, thereby facilitating the subsequent purification of the harmful tail gas, thereby improving the purification efficiency of the harmful tail gas from phosphate ammonium production;

[0015] 2. By setting up a transfer cooling box, the transfer cooling box is used as a transfer cooling device, so that by starting the second pump body, the second pump body sucks the cooling liquid with increased temperature into the transfer cooling box through the second connecting pipe, and then through the semiconductor refrigerator set on the outer wall of the air intake fan, the semiconductor refrigerator cools the cooling liquid in the transfer cooling box, and the third pump body draws the cooled cooling liquid into the storage tank through the delivery pipe. Compared with the existing technology, the cooling liquid used for cooling can be recycled, thereby reducing the use cost and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of an embodiment of the application;

[0017] Figure 2 is a schematic diagram of a three-dimensional top view of the structure of an embodiment of the application;

[0018] Figure 3 This is a cross-sectional view of the cooling chamber structure of an embodiment of the application;

[0019] Figure 4 for Figure 3 A magnified schematic diagram of the structure in the middle.

[0020] Explanation of the accompanying drawings: 1. Cooling bin; 2. Exhaust gas purification tower; 3. Storage box; 4. First pump body; 5. Transfer cooling box; 6. Inlet fan; 7. Air inlet; 8. Semiconductor refrigerator; 9. Second pump body; 10. Third pump body; 11. First connecting pipe; 12. Exhaust fan; 14. Heat transfer pipe; 15. External pipe; 16. Exhaust pipe; 17. Second connecting pipe; 18. Delivery pipe. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-4 This application is described in further detail.

[0022] The present application discloses a tail gas purification mechanism for ammonium phosphate production. Figure 1-4A phosphate ammonium production tail gas purification mechanism includes a cooling bin 1, a side outer wall of the cooling bin 1 is provided with a plurality of air inlets 7, through which the phosphate ammonium production tail gas enters, a side outer wall of the cooling bin 1 away from the plurality of air inlets 7 is provided with an outlet pipe 16, and a tail gas purification tower 2 for removing ammonia and sulfur dioxide from the tail gas is provided on one side of the cooling bin 1, and the tail gas purification tower 2 is connected to the outlet pipe 16, and a high-efficiency catalyst is arranged inside the tail gas purification tower 2 to promote the catalytic oxidation reaction of harmful gases such as sulfur dioxide and nitrogen monoxide in the tail gas, and convert them into more easily handled or harmless substances such as sulfuric acid and nitric acid, etc. At the same time, the adsorption materials such as molecular sieves and activated carbon in the tail gas purification tower 2 are used to deeply purify the tail gas after catalytic oxidation, focusing on the adsorption and removal of residual trace harmful gases. and particulate matter, thereby further improving the purification effect of the exhaust gas purification tower 2, and then discharging it into the air, a plurality of heat-conducting pipes 14 are fixedly installed on the inner wall of the cooling bin 1, and the outer walls of the plurality of heat-conducting pipes 14 are sleeved with external pipes 15, and the plurality of heat-conducting pipes 14 and the external pipes 15 are all thermally conductive, and the plurality of heat-conducting pipes 14 are connected with the air outlet pipe 16 and the air inlet 7, and the top outer wall of the cooling bin 1 is provided with a supply assembly for supplying cooling liquid to the plurality of external pipes 15, and the exhaust gas produced by phosphate ammonium is allowed to enter the plurality of heat-conducting pipes 14, and thus the cooling liquid is allowed to enter the external pipe 15 sleeved on the plurality of heat-conducting pipes 14 through the supply assembly, so that the exhaust gas is cooled by the cooling liquid before purification, and then the cooled exhaust gas is allowed to enter the exhaust gas purification tower 2 through the air outlet pipe 16 for purification.

[0023] The supply component includes a storage box 3, which is fixedly mounted on the upper surface of the cooling bin 1. A first connecting pipe 11 is provided between the storage box 3 and the plurality of external pipes 15, and the first connecting pipe 11 is communicated with the plurality of external pipes 15 and the storage box 3. A first pump body 4 is fixedly connected to the upper surface of the cooling bin 1, and the output end of the first pump body 4 is communicated with the first connecting pipe 11. By pouring the coolant into the storage box 3, the first pump body 4 is started through an external power switch, so that the output end of the first pump body 4 draws the coolant into the plurality of external pipes 15 through the first connecting pipe 11, thereby facilitating cooling of the exhaust gas.

[0024] The side outer wall of the cooling bin 1 is fixedly connected to a transfer cooling box 5, and the outer wall of the transfer cooling box 5 is fixedly installed with a semiconductor refrigerator 8 for cooling the interior of the transfer cooling box 5. The semiconductor refrigerator 8 includes a heat dissipation fan, a cooling fan, a semiconductor cooling sheet, etc. By starting the semiconductor refrigerator 8, the temperature inside the transfer cooling box 5 is reduced, thereby facilitating the rapid cooling of the coolant after use.

[0025] A second connecting pipe 17 is provided between several external pipes 15 and the transfer cooling box 5, and the second connecting pipe 17 is connected to several external pipes 15 and the transfer cooling box 5. A second pump body 9 is fixedly installed on the outer wall of the transfer cooling box 5, and the output end of the second pump body 9 is connected to the second connecting pipe 17. The second pump body 9 is started by an external power switch, so that the output end of the second pump body 9 sucks the used coolant into the transfer cooling box 5 through the second connecting pipe 17, thereby facilitating its cooling utilization.

[0026] A delivery pipe 18 is provided between the transfer cooling box 5 and the storage box 3, and the delivery pipe 18 is connected to the transfer cooling box 5 and the storage box 3. A third pump body 10 is fixedly installed on the top outer wall of the transfer cooling box 5, and the output end of the third pump body 10 is connected to the delivery pipe 18. The third pump body 10 is started by an external power switch, so that the output end of the third pump body 10 draws the temperature-reduced coolant into the storage box 3 through the delivery pipe 18, thereby facilitating the recycling of the coolant.

[0027] The outer wall of the cooling chamber 1 is fixedly mounted with a plurality of exhaust fans 12 and an intake fan 6, through which an air flow duct is generated, so that the plurality of exhaust fans 12 discharge hot air and the intake fan 6 inhales fresh air, thereby reducing the temperature inside the cooling chamber 1.

[0028] The implementation principle of the tail gas purification mechanism of phosphate ammonium production in the embodiment of the present application is as follows: first, a plurality of air inlets 7 are connected to the tail gas discharged from the phosphate ammonium production, so that the tail gas enters the plurality of heat-conducting pipes 14 in the cooling bin 1 through the plurality of air inlets 7, and the coolant is poured into the storage tank 3, thereby starting the first pump body 4 through the external power switch, so that the output end of the first pump body 4 draws the coolant in the storage tank 3 into the outer pipe 15 through the first connecting pipe 11, so that the tail gas in the heat-conducting pipe 14 is affected by the coolant in the outer pipe 15, and then cooled, so that the tail gas in the heat-conducting pipe 14 after cooling enters the tail gas purification tower 2 through the outlet pipe 16, and the tail gas is purified by the tail gas purification tower 2 for ammonia and sulfur dioxide, so that the high-efficiency catalyst in the tail gas purification tower 2 promotes the removal of harmful gases such as dioxygen in the tail gas. The exhaust gas purification tower 2 is used to catalyze the oxidation of sulfur dioxide, nitrogen monoxide, etc., and convert them into substances that are easier to handle or harmless. At the same time, the exhaust gas after catalytic oxidation is deeply purified through the adsorption materials such as molecular sieves, activated carbon, etc. in the exhaust gas purification tower 2, focusing on the adsorption and removal of residual trace harmful gases and particulate matter, thereby improving the purification and refrigeration effect of the exhaust gas. At the same time, the second pump body 9 is started by the external power switch, so that the output end of the second pump body 9 sucks the coolant that has cooled the exhaust gas into the transfer cooling box 5 through the second connecting pipe 17, thereby starting the semiconductor refrigerator 8 through the external power switch, so that the semiconductor refrigerator 8 is refrigerated, thereby cooling the coolant in the transfer cooling box 5, and then starting the third pump body 10 through the external power switch, so that the output end of the third pump body 10 draws the cooled coolant into the transfer cooling box 5 through the delivery pipe 18 for recycling.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0030] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0032] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tail gas purification mechanism for ammonium phosphate production, comprising a cooling chamber (1), characterized in that: The side outer wall of the cooling bin (1) is provided with a plurality of air inlets (7), the side outer wall of the cooling bin (1) away from the plurality of air inlets (7) is provided with an air outlet pipe (16), and a tail gas purification tower (2) for removing ammonia and sulfur dioxide from the tail gas is provided on one side of the cooling bin (1), and the tail gas purification tower (2) is connected to the air outlet pipe (16), the inner wall of the cooling bin (1) is fixedly provided with a plurality of heat-conducting pipes (14), the outer walls of the plurality of heat-conducting pipes (14) are all sleeved with external pipes (15), and the plurality of heat-conducting pipes (14) are connected to the air outlet pipe (16) and the air inlet (7), and the top outer wall of the cooling bin (1) is provided with a supply component for supplying cooling liquid to the plurality of external pipes (15).

2. The tail gas purification mechanism for ammonium phosphate production according to claim 1, characterized in that: The supply assembly comprises a storage box (3), the storage box (3) being fixedly mounted on the upper surface of the cooling bin (1), a first connecting pipe (11) being provided between the storage box (3) and a plurality of external pipes (15), and the first connecting pipe (11) being connected to the plurality of external pipes (15) and the storage box (3), a first pump body (4) being fixedly connected to the upper surface of the cooling bin (1), and an output end of the first pump body (4) being connected to the first connecting pipe (11).

3. The tail gas purification mechanism for ammonium phosphate production according to claim 1, characterized in that: The side outer wall of the cooling chamber (1) is fixedly connected to a transfer cooling box (5), and the outer wall of the transfer cooling box (5) is fixedly installed with a semiconductor refrigerator (8) for cooling the interior of the transfer cooling box (5).

4. The tail gas purification mechanism for ammonium phosphate production according to claim 1, characterized in that: A second connecting pipe (17) is provided between the plurality of outer pipes (15) and the transfer cooling box (5), and the second connecting pipe (17) is connected to the plurality of outer pipes (15) and the transfer cooling box (5). A second pump body (9) is fixedly mounted on the outer wall of the transfer cooling box (5), and the output end of the second pump body (9) is connected to the second connecting pipe (17).

5. The tail gas purification mechanism for ammonium phosphate production according to claim 3, characterized in that: A delivery pipe (18) is provided between the transfer cooling box (5) and the storage box (3), and the delivery pipe (18) is connected to the transfer cooling box (5) and the storage box (3); a third pump body (10) is fixedly mounted on the top outer wall of the transfer cooling box (5), and the output end of the third pump body (10) is connected to the delivery pipe (18).

6. The tail gas purification mechanism for ammonium phosphate production according to claim 1, characterized in that: A plurality of air outlet fans (12) and air inlet fans (6) are fixedly mounted on the outer wall of the cooling bin (1).

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