Waste gas recovery device in preparation of water reducing agent

Abstract

The utility model discloses a waste gas recovery device in water reducing agent preparation, which relates to the technical field of water reducing agent production and comprises a compression tank, a top plate is fixed at the top of the compression tank, a cylinder is fixed in the middle of the upper end face of the top plate, a crankshaft of the cylinder extends into the compression tank and is fixed with a piston plate, and a first extension plate is fixed at one end of the top plate. A fixed cylinder is fixed to the lower end face of the first extension plate and connected with the side face of the top of the compression tank through a pipeline, a filter cylinder is detachably fixed to the lower end of the fixed cylinder, a waste gas inlet pipe is fixed to the bottom of the filter cylinder, a horizontal upper-stage filter screen is fixed to the middle in the fixed cylinder, and a horizontal lower-stage filter screen is fixed to the middle in the filter cylinder. A plurality of adsorbents are placed between the upper-stage filter screen and the lower-stage filter screen. According to the utility model, the water reducing agent waste gas can be subjected to adsorptive filtration treatment through the upper-stage filter screen, the lower-stage filter screen and the adsorbent, so that impurities in the compressed and liquefied naphthalene steam can be reduced, and the naphthalene recovery effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water reducing agent production, in particular to a waste gas recovery device in the preparation of water reducing agent. Background Art

[0002] Water reducer is an admixture in concrete with a water-reducing effect. It can improve construction conditions without increasing the amount of water used per cubic meter and can improve the performance of concrete. It has become the fifth necessary component of modern concrete besides concrete, sand, stone and water.

[0003] At present, a Chinese patent with publication number CN209333751U discloses a waste gas recovery device in the production process of naphthalene-based water reducer, including a sulfonation reactor, a waste gas outlet is provided on the top of the sulfonation reactor; the waste gas outlet is connected to a waste gas recovery device; the waste gas recovery device includes a naphthalene recovery device connected to the waste gas outlet; the naphthalene recovery device includes a compression recovery tank, a compression piston is provided on the upper part of the compression recovery tank, and a gas phase outlet of the compression recovery tank is provided with an exhaust fan. The utility model utilizes the physical property difference between the components of the waste gas generated by the sulfonation reaction to compress the waste gas to a certain extent, so that the naphthalene vapor is liquefied, while the SO2 and SO3 acidic gases remain in a gaseous state, and then recovers naphthalene with higher purity from the waste gas of the sulfonation reaction.

[0004] However, when the waste gas recovery device of the prior art is in use, particulate matter in the waste gas is easily transported into the compression recovery tank along with the waste gas, and mixed with liquid naphthalene as the naphthalene vapor is liquefied, resulting in a large amount of particulate impurities in the recovered naphthalene, which affects the secondary use.

[0005] To this end, the present application provides a waste gas recovery device in the preparation of a water reducing agent to solve the above technical problems. Utility Model Content

[0006] The purpose of the present application is to provide a waste gas recovery device in the preparation of a water reducer, which can perform adsorptive filtration treatment on the water reducer waste gas through an upper filter, a lower filter and an adsorbent, thereby reducing impurities in the compressed and liquefied naphthalene vapor and improving the recovery effect of naphthalene.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a waste gas recovery device in the preparation of a water reducer, comprising a compression tank, a top plate is fixed on the top of the compression tank, a cylinder is fixed on the middle part of the upper end surface of the top plate, the machine shaft of the cylinder extends into the compression tank and is fixed with a piston plate, a first extension plate is fixed on one end of the top plate, a fixed cylinder is fixed on the lower end surface of the first extension plate, the fixed cylinder is connected to the top side surface of the compression tank through a pipeline, a filter cylinder is detachably fixed on the lower end of the fixed cylinder, an exhaust gas inlet pipe is fixed on the bottom of the filter cylinder, a horizontal upper filter screen is fixed in the middle part of the fixed cylinder, a horizontal lower filter screen is fixed in the middle part of the filter cylinder, and a plurality of adsorbents are placed between the upper filter screen and the lower filter screen.

[0008] As a further preferred solution, a second extension plate is fixed to one end of the top plate away from the first extension plate, a spray pipe is fixed to the lower end surface of the second extension plate, and a spray mechanism is provided on the top of the spray pipe.

[0009] As a further preferred embodiment, an exhaust gas distribution pipe is installed on the side of the top of the compression tank away from the fixed cylinder, the exhaust gas distribution pipe extends into the bottom of the spray pipe and has multiple air outlet holes on the surface, and an exhaust pipe is provided on the top side of the spray pipe.

[0010] As a further preferred embodiment, the spray mechanism at the top of the spray pipe includes a connecting pipe and a spray plate, the connecting pipe is fixed to the upper end surface of the second extension plate and penetrates into the top of the spray pipe, and the spray plate is fixed to the lower end of the connecting pipe, and a plurality of nozzles are installed on the lower end surface of the spray plate.

[0011] As a further preferred solution, a threaded portion is constructed on the inner wall of the upper port of the filter cylinder, and the threaded portion is threadedly matched with the outer edge surface of the lower end of the fixing cylinder.

[0012] As a further preferred solution, a plurality of brackets for support are installed on the lower end surface of the compression tank.

[0013] As a further preferred solution, the bottom of the compression tank is designed to be conical, a recovery pipe is fixed to the lowermost end of the bottom of the compression tank, and a valve is provided on the recovery pipe.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] 1. The utility model benefits from the arrangement of the fixed cylinder and the filter cylinder, which can be fixed on the lower end surface of the first extension plate to communicate with the air inlet end of the compression tank, so that the exhaust gas is first filtered by the upper filter screen, the lower filter screen and the adsorption of the adsorbent before entering the compression tank for compression, which can reduce impurities in the naphthalene vapor after compression and liquefaction, and is conducive to improving the recovery effect of naphthalene.

[0016] 2. Thanks to the cooperation of the spray pipe, the waste gas distribution pipe, the connecting pipe and the spray plate, the utility model can spray the waste gas produced by the water reducer after the liquefaction and separation of naphthalene vapor, and can use alkaline water to neutralize the acidic impurities in the waste gas, thereby improving the waste gas treatment effect on the waste gas produced by the water reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 For the utility model Figure 3 A magnified schematic diagram of the structure at center A;

[0021] Figure 4 It is a structural schematic diagram of the fixing cylinder of the utility model.

[0022] In the figure: 1. compression tank; 101. bracket; 102. recovery pipe; 2. top plate; 3. cylinder; 301. piston plate; 4. first extension plate; 401. fixing cylinder; 402. filter cylinder; 403. exhaust gas inlet pipe; 404. threaded part; 5. upper filter screen; 501. lower filter screen; 6. adsorbent; 7. second extension plate; 701. spray pipe; 702. drain pipe; 703. exhaust pipe; 8. exhaust gas distribution pipe; 801. air outlet; 9. connecting pipe; 901. spray plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example: Reference Figure 1 and Figure 2The waste gas recovery device in the preparation of a water reducing agent shown in the figure comprises a compression tank 1, a plurality of brackets 101 for support are installed on the lower end surface of the compression tank 1, a top plate 2 is fixed on the top of the compression tank 1, a cylinder 3 is fixed on the middle part of the upper end surface of the top plate 2, the shaft of the cylinder 3 extends into the compression tank 1, and a piston plate 301 is fixed thereto, and the piston plate 301 can be driven by the cylinder 3 to compress the waste gas in the compression tank 1 to separate the naphthalene vapor.

[0025] The bottom of the compression tank 1 is conical in design, and a recovery pipe 102 is fixed at the bottom of the compression tank 1. A valve is provided on the recovery pipe 102. Therefore, the liquefied naphthalene can be recovered through the recovery pipe 102 for reuse.

[0026] At the same time, a first extension plate 4 is fixed to one end of the top plate 2, a fixing cylinder 401 is fixed to the lower end surface of the first extension plate 4, the fixing cylinder 401 is connected to the top side of the compression tank 1 through a pipeline, and a filter cylinder 402 is detachably fixed to the lower end of the fixing cylinder 401, so as to cooperate with the filter cylinder 402 to be fixed to the bottom of the fixing cylinder 401. Figure 4 As shown, a threaded portion 404 is constructed on the inner wall of the upper port of the filter cartridge 402, and the threaded portion 404 is threadedly matched with the outer edge surface of the lower end of the fixed cylinder 401 to form a detachable installation, and a waste gas inlet pipe 403 is fixed to the bottom of the filter cartridge 402, and a horizontal upper filter screen 5 is fixed in the middle of the fixed cylinder 401, and a horizontal lower filter screen 501 is fixed in the middle of the filter cartridge 402, and a plurality of adsorbents 6 are placed between the upper filter screen 5 and the lower filter screen 501. Therefore, the waste gas from the production of the water reducer will enter the filter cartridge 402 through the waste gas inlet pipe 403, and will first be filtered by the upper filter screen 5, the lower filter screen 501 and the adsorptive properties of the adsorbent 6 before being passed into the compression tank 1 for compression, which can reduce impurities in the naphthalene vapor after compression and liquefaction, and is beneficial to improving the recovery effect of naphthalene.

[0027] In addition, with Figure 2 and Figure 3 As shown, a second extension plate 7 is fixed to one end of the top plate 2 away from the first extension plate 4, a spray pipe 701 is fixed to the lower end surface of the second extension plate 7, a spray mechanism is arranged at the top of the spray pipe 701, and the spray mechanism includes a connecting pipe 9 and a spray plate 901, the connecting pipe 9 is fixed to the upper end surface of the second extension plate 7, and can be used to connect an alkaline water generator, the lower end of the connecting pipe 9 penetrates into the top of the spray pipe 701, and the spray plate 901 is fixed, and a plurality of nozzles are installed on the lower end surface of the spray plate 901, which can evenly spray the exhaust gas entering the spray pipe 701.

[0028] In addition, a drain pipe 702 is installed at the bottom of the spray pipe 701, and a valve is provided on the drain pipe 702.

[0029] During specific implementation, a waste gas distribution pipe 8 is installed on the side of the top of the compression tank 1 away from the fixed cylinder 401. The waste gas distribution pipe 8 extends into the bottom of the spray pipe 701 and is provided with a plurality of air outlet holes 801 on the surface. The waste gas after naphthalene liquefaction and recovery in the compression tank 1 can be introduced into the bottom of the spray pipe 701 and sprayed out evenly. An exhaust pipe 703 is provided on one side of the top of the spray pipe 701. The exhaust pipe 703 can be used to discharge the waste gas after neutralization treatment.

[0030] Working principle of the utility model: when the waste gas recovery device in the preparation of the water reducing agent is used, the waste gas of the water reducing agent will enter the filter cartridge 402 through the waste gas inlet pipe 403, so that the waste gas will first pass through the adsorptive filtration of the upper filter screen 5, the lower filter screen 501 and the adsorbent 6 before entering the compression tank 1, and the piston plate 301 is activated by the cylinder 3 to compress the naphthalene vapor and liquefy it, so as to recover the naphthalene.

[0031] Subsequently, the waste gas distribution pipe 8 can pass the waste gas after liquefaction of naphthalene vapor into the spray pipe 701, and then discharge it after spraying and neutralization treatment, thereby improving the waste gas treatment effect on the waste gas produced by the water reducing agent.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A waste gas recovery device for preparing a water reducing agent, comprising a compression tank (1), a top plate (2) being fixed on the top of the compression tank (1), a cylinder (3) being fixed in the middle of the upper end surface of the top plate (2), a crankshaft of the cylinder (3) extending into the compression tank (1) and being fixed with a piston plate (301), characterized in that: A first extension plate (4) is fixed to one end of the top plate (2), a fixed cylinder (401) is fixed to the lower end surface of the first extension plate (4), the fixed cylinder (401) is connected to the top side of the compression tank (1) through a pipeline, a filter cylinder (402) is detachably fixed to the lower end of the fixed cylinder (401), an exhaust gas intake pipe (403) is fixed to the bottom of the filter cylinder (402), a horizontal upper filter screen (5) is fixed to the middle of the fixed cylinder (401), a horizontal lower filter screen (501) is fixed to the middle of the filter cylinder (402), and a plurality of adsorbents (6) are placed between the upper filter screen (5) and the lower filter screen (501).

2. The waste gas recovery device in the preparation of a water reducing agent according to claim 1, characterized in that: A second extension plate (7) is fixed to one end of the top plate (2) away from the first extension plate (4), a spray pipe (701) is fixed to the lower end surface of the second extension plate (7), and a spray mechanism is provided at the top of the spray pipe (701).

3. The waste gas recovery device in the preparation of a water reducing agent according to claim 2, characterized in that: An exhaust gas distribution pipe (8) is installed on the top side of the compression tank (1) away from the fixed cylinder (401), and the exhaust gas distribution pipe (8) extends into the bottom of the spray pipe (701) and has a plurality of air outlet holes (801) on the surface, and an exhaust pipe (703) is provided on the top side of the spray pipe (701).

4. The waste gas recovery device in the preparation of a water reducing agent according to claim 2, characterized in that: The spray mechanism at the top of the spray pipe (701) comprises a connecting pipe (9) and a spray plate (901); the connecting pipe (9) is fixed to the upper end surface of the second extension plate (7) and penetrates into the top of the spray pipe (701); the spray plate (901) is fixed to the lower end of the connecting pipe (9); and a plurality of nozzles are installed on the lower end surface of the spray plate (901).

5. The waste gas recovery device in the preparation of a water reducing agent according to claim 1, characterized in that: A threaded portion (404) is formed on the inner wall of the upper port of the filter cylinder (402), and the threaded portion (404) is threadably matched with the outer edge surface of the lower end of the fixing cylinder (401).

6. The waste gas recovery device in the preparation of a water reducing agent according to claim 1, characterized in that: A plurality of brackets (101) for supporting are installed on the lower end surface of the compression tank (1).

7. The waste gas recovery device in the preparation of a water reducing agent according to claim 1, characterized in that: The bottom of the compression tank (1) is designed to be conical, and a recovery pipe (102) is fixed at the lowermost end of the bottom of the compression tank (1), and a valve is provided on the recovery pipe (102).

Images