Filtering device for purifying ammonium sulfate reaction liquid

Abstract

The utility model relates to a filter device for purifying ammonium sulfate reaction liquid, which comprises a box body, a filter material drawing box is arranged in the box body, the filter material drawing box is hermetically connected with the box body through a sealing piece, a pressing device is arranged on the outer side of the filter material drawing box and is detachably connected with the box body, the bottom surface of the filter material drawing box is hollowed out, and a filter layer is arranged in the filter material drawing box. The top of the box is connected with a liquid inlet pipe, and the bottom of the box is connected with a liquid outlet pipe. The device is used for removing insoluble suspended matters mixed in the ammonium sulfate mother liquor, the filter layer is convenient to replace, and the manufacturing and operating cost is low. The overall mother liquor quality of the ammonium sulfate system during the operation cycle is improved; the sulfuric acid product color is improved.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to a filtering device for purifying ammonium sulfate reaction liquid. Background Art

[0002] The reaction raw material ammonia gas for producing ammonium sulfate products comes from the coke oven gas in the drum cooling process. When the ammonia recovery system completes the reaction and reaches the saturation state, and the ammonium sulfate crystals in the indoor crystallization tank accumulate to a certain extent, the material is discharged from the bottom of the crystallization tank into the centrifuge for solid-liquid separation of the product operation. The mother liquor separated by centrifugation returns to the saturator system through the return pipe to continue absorbing ammonia gas to participate in the reaction. Since the ammonium sulfate mother liquor is a high ammonia-nitrogen medium, if the method of regularly discharging and replacing the mother liquor to improve the quality of the mother liquor is adopted in the area, it will cause the problem of excessive ammonia nitrogen in the sewage treatment tank of the downstream environmental protection process. Except for the operation of stopping production and removing slag from the tank to thoroughly improve the quality of the ammonium sulfate mother liquor, during the long-term operation of the ammonium sulfate process, the dust and impurities entrained in the coke oven gas continuously precipitate and accumulate in the ammonium sulfate mother liquor system, seriously interfering with the quality of the ammonium sulfate mother liquor, and the color of the dried finished ammonium sulfate is greatly affected, hindering the smooth sales of the product.

[0003] Affected by the uncontrollable quality of the product raw material coke oven gas, the color quality of ammonium sulfate products in the area has decreased, directly affecting the selling price of the finished product. Limited by the downstream environmental protection process, it is impossible to take the operation of discharging and replacing externally to improve the quality of the mother liquor online. In order to solve the problem of the quality of ammonium sulfate mother liquor online, a filtering device is needed to filter the impurities in the mother liquor online to ensure the qualified quality of the finished product.

[0004] The existing patent CN218011593U, a mother liquor filtration and recovery device in the production process of molecular sieve, discloses a mother liquor filtration and recovery device in the production process of molecular sieve, which relates to the technical field of molecular sieve production, including a device main body and a water tank. A cleaning component is arranged on the water tank. The cleaning component includes a conveying pipe. A separation pipe is connected to the conveying pipe. A butterfly valve is connected to the separation pipe. A bucket cover is connected to the butterfly valve through a recovery pipe. A collection bucket is connected to the bucket cover. An overflow pipe is connected to the collection bucket. Through the setting of the cleaning component, the water pump can recycle the water in the water tank through the conveying pipe, thereby reducing the water consumption to save costs. Since the conveying pipe is spiral, the water spirally rises when flowing in the conveying pipe, generating centrifugal force to throw the filter cake residue to the periphery. By reducing the water consumption through the circulating flow of the cleaning water, the production cost is reduced. At the same time, most of the filter cake residues are separated and recovered to avoid the occurrence of blockage of the high-pressure nozzle and reduce the loss of molecular sieve. This device is not suitable for filtering ammonium sulfate mother liquor with only suspended impurities. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a filtering device for purifying ammonium sulfate reaction liquid, which can effectively filter suspended insoluble impurities in the liquid.

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

[0007] A filtering device for purifying ammonium sulfate reaction liquid, comprising a box body. A filter material drawing box is arranged inside the box body. The filter material drawing box is hermetically connected with the box body through a sealing member. A pressing device is arranged on the outer side of the filter material drawing box and is detachably connected with the box body. The bottom surface of the filter material drawing box is hollowed out. A filtering layer is arranged inside the filter material drawing box. A liquid inlet pipe is connected to the top of the box body, and a liquid outlet pipe is connected to the bottom of the box body.

[0008] The filter material drawing box comprises a box body and end plates, and a drawing handle is connected to the end plates.

[0009] The sealing member is a rubber gasket.

[0010] The filtering layer is rock wool.

[0011] A drawing track assembly is arranged between the filter material drawing box and the box body.

[0012] Rollers are arranged at the bottom of the filter material drawing box.

[0013] The pressing device comprises a pressing plate and fastening bolts. The two ends of the pressing plate are bent. The pressing plate forms a semi-surrounding structure and abuts against the outer surfaces of the filter material drawing box and the box body, and is locked by the fastening bolts.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model removes insoluble suspended substances mixed in the ammonium sulfate mother liquor, the filtering layer can be replaced conveniently, and the manufacturing and operation costs are low. The overall quality of the mother liquor in the ammonium sulfate system during the operation cycle is improved, and the color of the sulfuric acid product is improved. Description of the Drawings

[0016] Figure 1 is a structural diagram of the utility model.

[0017] Figure 2 is an internal schematic diagram of the utility model.

[0018] Figure 3 is a drawing schematic diagram of the utility model.

[0019] In the figure: box body 1, filter material drawing box 2, sealing member 3, filtering layer 4, liquid inlet pipe 5, liquid outlet pipe 6, drawing track assembly 7, rollers 8, pressing plate 9, fastening bolts 10, box body 21, end plates 22, drawing handle 23. Detailed Embodiments

[0020] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is more than two.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0022] A filtering device for purifying ammonium sulfate reaction liquid, comprising a box body 1. A filter material extraction box 2 is arranged inside the box body 1. The filter material extraction box 2 is hermetically connected to the box body 1 through a sealing member 3. A pressing device is arranged outside the filter material extraction box 2 and is detachably connected to the box body 1. The bottom surface of the filter material extraction box 2 is hollowed out. A filtering layer 4 is arranged inside the filter material extraction box 2. A liquid inlet pipe 5 is connected to the top of the box body 1, and a liquid outlet pipe 6 is connected to the bottom of the box body 1.

[0023] The filter material extraction box 2 includes a box body 21 and an end plate 22. A pulling handle 23 is connected to the end plate 22.

[0024] The sealing member 3 is a rubber gasket.

[0025] The filtering layer 4 is rock wool.

[0026] A pulling track assembly 7 is arranged between the filter material extraction box 2 and the box body 1.

[0027] Rollers 8 are arranged at the bottom of the filter material extraction box 2.

[0028] The pressing device includes a pressing plate 9 and fastening bolts 10. The two ends of the pressing plate 9 are bent. The pressing plate 9 forms a semi-surrounding structure and is attached to the outer surfaces of the filter material extraction box 2 and the box body 1, and is locked by the fastening bolts 10.

[0029] This device is arranged between the crystallization tank and the saturator system. The ammonium sulfate mother liquor separated from the ammonium sulfate crystals in the crystallization tank by a centrifuge first passes through the filtering device and then enters the saturator system to absorb ammonia. The used filter material is processed by recycling and incineration, without any pollution to the environment in the area, and the whole filtering system is efficient and safe.

[0030] To make the objectives, technical solutions, and technical effects of the present utility model clearer, the technical solutions in the embodiments of the present utility model will now be described clearly and completely. However, the embodiments described below are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art in combination with the embodiments of the present utility model without making any creative efforts fall within the protection scope of the present utility model. Embodiment

[0031] A filtering device for purifying ammonium sulfate reaction liquid, comprising a box body 1. A filter material drawer box 2 is arranged inside the box body 1. The filter material drawer box 2 is hermetically connected to the box body 1 through a rubber pad. A pressing device is arranged outside the filter material drawer box 2 and is detachably connected to the box body 1. The pressing device comprises a pressing plate 9 and fastening bolts 10. Both ends of the pressing plate 9 are bent. The pressing plate 9 forms a semi-surrounding structure and abuts against the outer surfaces of the filter material drawer box 2 and the box body 1, and is locked by the fastening bolts 10.

[0032] The filter material drawer box 2 comprises a box body 21 and end plates 22. A pulling handle 23 is connected to the end plates 22. The bottom surface of the filter material drawer box 2 is hollowed out. Rock wool is arranged inside the filter material drawer box 2. A liquid inlet pipe 5 is connected to the top of the box body 1, and a liquid outlet pipe 6 is connected to the bottom of the box body 1. Embodiment

[0033] A filtering device for purifying ammonium sulfate reaction liquid, comprising a box body 1. A filter material drawer box 2 is arranged inside the box body 1. A drawer track assembly 7 is arranged between the filter material drawer box 2 and the box body 1.

[0034] The filter material drawer box 2 is hermetically connected to the box body 1 through a rubber pad. A pressing device is arranged outside the filter material drawer box 2 and is detachably connected to the box body 1. The pressing device comprises a pressing plate 9 and fastening bolts 10. Both ends of the pressing plate 9 are bent. The pressing plate 9 forms a semi-surrounding structure and abuts against the outer surfaces of the filter material drawer box 2 and the box body 1, and is locked by the fastening bolts 10.

[0035] The filter material drawer box 2 comprises a box body 21 and end plates 22. A pulling handle 23 is connected to the end plates 22. The bottom surface of the filter material drawer box 2 is hollowed out. Rock wool is arranged inside the filter material drawer box 2. A liquid inlet pipe 5 is connected to the top of the box body 1, and a liquid outlet pipe 6 is connected to the bottom of the box body 1. Embodiment

[0036] A filtering device for purifying ammonium sulfate reaction liquid, comprising a box body 1. A filter material drawer box 2 is arranged inside the box body 1. The filter material drawer box 2 is hermetically connected to the box body 1 through a rubber pad. A pressing device is arranged outside the filter material drawer box 2 and is detachably connected to the box body 1. The pressing device comprises a pressing plate 9 and fastening bolts 10. Both ends of the pressing plate 9 are bent. The pressing plate 9 forms a semi-surrounding structure and abuts against the outer surfaces of the filter material drawer box 2 and the box body 1, and is locked by the fastening bolts 10.

[0037] The filter media drawer box 2 includes a box body 21 and an end plate 22, and a drawer handle 23 is connected to the end plate 22. The bottom surface of the filter media drawer box 2 is hollowed out, rock wool is provided inside the filter media drawer box 2, and rollers 8 are provided at the bottom of the filter media drawer box 2.

[0038] A liquid inlet pipe 5 is connected to the top of the box body 1, and a liquid outlet pipe 6 is connected to the bottom of the box body 1. Embodiment

[0039] A filtering device for purifying ammonium sulfate reaction liquid includes a box body 1, a filter media drawer box 2 is provided inside the box body 1, and a drawer track assembly 7 is provided between the filter media drawer box 2 and the box body 1. The filter media drawer box 2 is hermetically connected to the box body 1 through a rubber pad, and a pressing device is provided on the outer side of the filter media drawer box 2 for detachably connecting to the box body 1. The pressing device includes a pressing plate 9 and fastening bolts 10. The two ends of the pressing plate 9 are bent, and the pressing plate 9 forms a semi-surrounding structure and abuts against the outer surfaces of the filter media drawer box 2 and the box body 1, and is locked by the fastening bolts 10.

[0040] The filter media drawer box 2 includes a box body 21 and an end plate 22, and a drawer handle 23 is connected to the end plate 22. The bottom surface of the filter media drawer box 2 is hollowed out, rock wool is provided inside the filter media drawer box 2, and rollers 8 are provided at the bottom of the filter media drawer box 2.

[0041] A liquid inlet pipe 5 is connected to the top of the box body 1, and a liquid outlet pipe 6 is connected to the bottom of the box body 1.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and basic spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for purifying ammonium sulfate reaction solution, characterized in that: It includes a box body, a filter material pull-out box is arranged inside the box body, the filter material pull-out box is sealed and connected to the box body through a seal, a clamping device is arranged on the outside of the filter material pull-out box and is detachably connected to the box body, the bottom surface of the filter material pull-out box is hollowed out, a filter layer is arranged inside the filter material pull-out box, the top of the box body is connected to a liquid inlet pipe, and the bottom of the box body is connected to a liquid outlet pipe.

2. The filter device for purifying ammonium sulfate reaction solution according to claim 1, characterized in that: The filter material pull-out box comprises a box body and an end plate, and a pull-out handle is connected to the end plate.

3. The filter device for purifying ammonium sulfate reaction solution according to claim 1, characterized in that: The sealing element is a rubber pad.

4. The filtering device for purifying ammonium sulfate reaction solution according to claim 1, characterized in that: The filter layer is rock wool.

5. The filtering device for purifying ammonium sulfate reaction solution according to claim 1, characterized in that: A pull-out track assembly is provided between the filter material pull-out box and the box body.

6. The filtering device for purifying ammonium sulfate reaction solution according to claim 1, characterized in that: The bottom of the filter material drawer box is provided with rollers.

7. The filtering device for purifying ammonium sulfate reaction solution according to claim 1, characterized in that: The clamping device comprises a clamping plate and fastening bolts. The two ends of the clamping plate are bent, and the clamping plate forms a semi-enclosed structure which is pressed against the outer surface of the filter material drawer box and the box body and is locked with the fastening bolts.

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