Novel CIP alkali liquor recovery device

Abstract

The utility model relates to the technical field of alkali liquor recovery, in particular to a novel CIP alkali liquor recovery device. The recovered alkali liquor can be used for acid-base balance adjustment of sewage, the alkali liquor is recycled, meanwhile, the PH value fluctuation of the sewage is reduced, meanwhile, particle impurities in the alkali liquor are effectively removed, the follow-up sewage treatment pressure is reduced, and more energy is saved and consumption is reduced; comprising a storage tank used for recovering and storing alkali liquor; a liquid inlet pipeline is arranged on the storage tank, a flow guide slope is arranged at the bottom in the storage tank, and the flow guide slope gradually inclines and descends towards one side far away from the liquid inlet pipeline; a slag collecting groove is formed in the diversion slope far away from the liquid inlet pipeline; the acid and alkali resistant pipeline is communicated with the interior of the storage tank; a pneumatic proportional integral valve is mounted on the acid and alkali resistant pipeline; the PH sensor is electrically connected with the pneumatic proportional integral valve; the liquid inlet pipeline comprises a main pipe and a plurality of branch pipes evenly distributed on the main pipe, and the central axes of the branch pipes are parallel to the inclined slope face of the flow guide slope.

Description

Technical Field

[0001] The utility model relates to the technical field of alkali solution recovery, in particular to a novel CIP alkali solution recovery device. Background Art

[0002] As we all know, CIP alkaline solution is mainly used to clean, sterilize and passivate the residual dirt in the pipeline system, and can also remove impurities such as iron ions or organic matter in the system; in the production process of chemical, food, pharmaceutical and other industries, a large amount of alkaline waste liquid will be discharged after the pipeline system is cleaned. In conventional industrial production, alkaline waste liquid will be directly discharged into the sewage station, and some companies also directly recycle the alkaline solution.

[0003] For example, a Chinese utility model patent discloses an alkali solution recovery system (publication (announcement) number CN206494971U), characterized in that it includes an alkali solution output pipeline connected to an alkali etching tank, a crystallization tank, a centrifugal separator and an alkali filtrate storage tank, the crystallization tank is provided with a stirring device, the alkali solution is recovered by the Bayer process, the centrifugal separator is connected to the crystallization tank, the alkali filtrate storage tank is arranged at the output end of the centrifugal separator, the output end of the alkali filtrate storage tank is connected to the crystallization tank, the output end of the crystallization tank is connected to an alkali solution recovery storage tank, and the alkali solution recovery storage tank is connected to the alkali etching tank through a pipeline. It has a simple structure, convenient production operation, can greatly reduce production costs, and is environmentally friendly and energy-saving.

[0004] However, when the inventors implemented this device, they found the following defects: the above-mentioned alkali solution recovery method is expensive, which increases the production burden of the enterprise; the pH value of the production wastewater flowing into the sewage treatment plant is extremely unstable, and the pH value is sometimes high and sometimes low. When the pH is high, acid must be added for neutralization, and when it is low, alkali must be added for neutralization. This leads to frequent addition of acid and alkali, and increased acid and alkali consumption, thereby increasing the cost of treating wastewater, and failing to achieve a good energy-saving and consumption-reducing effect; the recovered CIP alkali solution contains a large amount of particulate matter, which imposes a burden on subsequent sewage treatment. Utility Model Content

[0005] Based on this, it is necessary to provide a new type of CIP alkali solution recovery device to address the above technical problems, and use the recovered alkali solution for acid-base balance adjustment of sewage. While recycling the alkali solution, it can reduce the pH fluctuation of sewage, and effectively remove particulate matter in the alkali solution, thereby reducing the subsequent sewage treatment pressure and saving energy and reducing consumption.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The invention discloses a novel CIP alkali solution recovery device, which is used for the recovery and treatment of alkali solution.

[0008] The novel CIP alkali solution recovery device specifically comprises:

[0009] A storage tank is used for recycling and storing alkali solution; a liquid inlet pipeline is provided on the storage tank, a guide slope is provided at the bottom of the storage tank, and the guide slope gradually slopes down toward the side away from the liquid inlet pipeline; a slag collecting tank is provided at the guide slope away from the liquid inlet pipeline;

[0010] Acid and alkali resistant pipeline, the acid and alkali resistant pipeline is connected to the inside of the storage tank; a pneumatic proportional integral valve is installed on the acid and alkali resistant pipeline;

[0011] A pH sensor is electrically connected to a pneumatic proportional integral valve; further, the pH sensor is installed in a regulating tank of a subsequent sewage treatment system; the pH sensor is electrically connected to the pneumatic proportional integral valve through an external PLC system.

[0012] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, the liquid inlet pipeline includes a main pipe and a plurality of branch pipes evenly distributed on the main pipe, the central axis of the branch pipe is parallel to the inclined slope of the diversion slope, and the central axis of the main pipe is perpendicular to the central axis of the branch pipe.

[0013] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, it also includes a pulling component, a slag collecting screen is placed in the slag collecting tank, and the pulling component is integrally connected with the slag collecting screen; further, the pulling component can adopt ropes, pull rods or other equivalent parts that have a pulling effect on the slag collecting screen.

[0014] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, the top of the storage tank is provided with an opening, and a first blocking plate is detachably installed at the opening.

[0015] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, a plurality of guide grooves converging to the slag collecting trough are provided on the guide slope, and the plurality of guide grooves are dispersed and separated from each other at one end away from the slag collecting trough.

[0016] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, it also includes a booster pump and a reflux pipe, the input end of the booster pump is connected to the output end of the pneumatic proportional integral valve, the input end of the reflux pipe is connected to an output end of the booster pump, the output end of the reflux pipe is connected to the liquid inlet pipeline, and an electric control valve is installed on the reflux pipe; further, the other output end of the booster pump extends into the regulating tank of the subsequent sewage treatment system.

[0017] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, the input end of the pneumatic proportional integral valve extends into the upper middle part of the storage tank adjacent to the liquid inlet pipeline.

[0018] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, an inspection port is provided at the middle and lower part of the storage tank, and a second blocking plate is detachably installed at the inspection port.

[0019] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, a liquid level meter connected to the interior of the storage tank is installed at one end of the storage tank.

[0020] As a preferred embodiment of the novel CIP alkali solution recovery device provided by the utility model, a maintenance platform and a climbing ladder are installed on the storage tank.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model provides a novel CIP alkali solution recovery device. The waste alkali solution enters the storage tank through the liquid inlet pipeline and is stored. When the pH value of the wastewater in the regulating tank of the sewage treatment station is low, the pH sensor starts the pneumatic proportional integral valve through the external PLC controller; the alkaline waste liquid in the storage tank is transported to the regulating tank of the sewage treatment station to adjust the pH in the regulating tank; when the pH returns to the normal value set by the PLC controller, the pneumatic proportional integral valve is automatically closed to stop transporting the alkaline waste liquid to the regulating tank in the sewage treatment station; the waste alkali solution is used as the regulating tank The regulator for adjusting the pH value inside the sewage will use the recovered alkali solution for adjusting the acid-base balance, and while recycling the alkali solution, it will reduce the pH fluctuation of the sewage. The particulate dirt in the alkali solution that enters the storage tank through the liquid inlet pipeline will settle on the diversion slope, and as the alkali solution enters through the liquid inlet pipeline at irregular intervals, it will have an impact on the particulate dirt settled on the diversion slope. Under the inclination of the diversion slope and the impact of the entering alkali solution, the particulate dirt will settle in the slag collecting tank, which can effectively remove the particulate debris in the alkali solution, reduce the pressure of subsequent sewage treatment, and save energy and reduce consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure provided by the utility model;

[0025] Figure 2 A schematic diagram of the top view structure provided by the utility model;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0027] Figure 4 for Figure 3 Schematic diagram of the cross-section structure at BB in the middle;

[0028] The markings in the figure are as follows: 1. Storage tank; 2. Diversion slope; 3. Slag collecting trough; 4. Acid and alkali resistant pipeline; 5. Pneumatic proportional integral valve; 6. PH sensor; 7. Main pipe; 8. Branch pipe; 9. Pulling assembly; 10. Slag collecting screen; 11. First sealing plate; 12. Diversion trough; 13. Reflux pipe; 14. Electric control valve; 15. Second sealing plate; 16. Liquid level meter; 17. Maintenance platform; 18. Climbing ladder; 19. Booster pump. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] A lye recovery system as described in the background technology; the lye recovery method is expensive and increases the production burden of the enterprise; and the pH value of the production wastewater flowing into the sewage treatment plant is extremely unstable, and the pH value is sometimes high and sometimes low. When the pH is high, acid must be added for neutralization, and when it is low, alkali must be added for neutralization. This leads to frequent addition of acid and alkali, and increased acid and alkali usage, thereby increasing the cost of treating wastewater, and failing to achieve a good energy-saving and consumption-reducing effect; the recovered CIP lye contains more particulate matter, which imposes a burden on subsequent sewage treatment.

[0031] In order to solve this technical problem, the utility model provides a novel CIP alkali solution recovery device, which is used for the recovery and treatment of alkali solution.

[0032] Specifically, please refer to Figure 1-4The novel CIP alkali solution recovery device specifically includes: a storage tank 1, which is used for the recovery and storage of alkali solution; a liquid inlet pipeline is provided on the storage tank 1, and a guide slope 2 is provided at the bottom of the storage tank 1, and the guide slope 2 gradually slopes down toward the side away from the liquid inlet pipeline; a slag collecting tank 3 is provided at the guide slope 2 away from the liquid inlet pipeline; an acid and alkali resistant pipeline 4, which is connected to the inside of the storage tank 1; a pneumatic proportional integral valve 5 is installed on the acid and alkali resistant pipeline 4; a PH sensor 6, which is electrically connected to the pneumatic proportional integral valve 5; further, the PH sensor 6 is installed in the regulating tank of the subsequent sewage treatment system; the PH sensor 6 is electrically connected to the pneumatic proportional integral valve 5 through an external PLC system.

[0033] The utility model provides a novel CIP alkali solution recovery device. The waste alkali solution enters the storage tank 1 through the liquid inlet pipeline for storage. When the pH value of the wastewater in the regulating tank of the sewage treatment station is low, the pH sensor 6 starts the pneumatic proportional integral valve 5 through the external PLC controller; the alkaline waste liquid in the storage tank 1 is transported to the regulating tank of the sewage treatment station to adjust the pH in the regulating tank; when the pH returns to the normal value set by the PLC controller, the pneumatic proportional integral valve 5 is automatically closed to stop transporting the alkaline waste liquid to the regulating tank in the sewage treatment station; the waste alkali solution is used as the regulating tank The regulator for adjusting the pH inside the wastewater uses the recovered alkali solution for adjusting the acid-base balance of the wastewater, and while recycling the alkali solution, the fluctuation of the pH value of the wastewater is reduced; the particulate dirt in the alkali solution entering the storage tank 1 through the liquid inlet pipeline settles on the diversion slope 2, and as the alkali solution enters from time to time through the liquid inlet pipeline, it can have an impact on the particulate dirt settled on the diversion slope 2. Under the inclination of the diversion slope 2 and the impact of the entering alkali solution, the particulate dirt is concentrated and settled in the slag collecting tank 3, which can effectively remove the particulate debris in the alkali solution, reduce the pressure of subsequent sewage treatment, and save energy and reduce consumption.

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Example 1

[0038] Please refer to Figure 1-4A novel CIP alkali recovery device comprises a storage tank 1 for recovering and storing alkali; a liquid inlet pipeline is provided on the storage tank 1, a guide slope 2 is provided at the bottom of the storage tank 1, and the guide slope 2 gradually slopes down toward the side away from the liquid inlet pipeline; a slag collecting tank 3 is provided at the guide slope 2 away from the liquid inlet pipeline; an acid and alkali resistant pipeline 4 is connected with the inside of the storage tank 1; a pneumatic proportional integral valve 5 is installed on the acid and alkali resistant pipeline 4; a PH sensor 6 is electrically connected with the pneumatic proportional integral valve 5; the liquid inlet pipeline comprises a main pipe 7 and a plurality of branch pipes 8 uniformly distributed on the main pipe 7, the central axis of the branch pipe 8 is parallel to the inclined slope of the guide slope 2, and the central axis of the main pipe 7 is perpendicular to the central axis of the branch pipe 8.

[0039] The novel CIP alkali solution recovery device provided in the present embodiment, after the alkali solution enters into a plurality of branch pipes 8 through the main pipe 7, it is evenly dispersed and flushed to the diversion slope 2 through the plurality of branch pipes 8, which can have a horizontal flushing effect on the particulate dirt settled on the diversion slope 2. As the alkali solution continuously enters through the branch pipes 8, the particulate dirt settled on the diversion slope 2 is gathered to the slag collecting tank 3, which can prevent the settled particulate dirt from being flushed away due to the concentrated water flow, and is beneficial to the removal of the particulate dirt in the alkali solution.

[0040] Example 2

[0041] The novel CIP alkali solution recovery device provided in Example 1 is further optimized, specifically, as follows: Figure 1-4 As shown, it also includes a pulling component 9, a slag collecting screen 10 is placed in the slag collecting trough 3, and the pulling component 9 is integrally connected with the slag collecting screen 10; further, the pulling component 9 can adopt ropes, pull rods or other equivalent parts that have a pulling effect on the slag collecting screen 10; the top of the storage tank 1 is provided with an opening, and a first sealing plate 11 is detachably installed at the opening.

[0042] The novel CIP alkali solution recovery device provided in the present embodiment, after the particulate dirt enters the slag collecting screen 10, it settles and gathers. After settling to a certain amount, the slag collecting screen 10 is lifted up through the opening by the pulling component 9, so that the particulate dirt in the storage tank 1 is completely collected. The operation is convenient. By treating the particulate dirt in this way, the alkali solution content in the particulate dirt can be reduced, and the recovered alkali solution will not be wasted.

[0043] Example 3

[0044] The novel CIP alkali solution recovery device provided in Example 1 is further optimized, such as Figure 3 As shown, a plurality of guide grooves 12 converging toward the slag collecting groove 3 are provided on the guide slope 2, and the plurality of guide grooves 12 are dispersed and away from one end of the guide groove 12 away from the slag collecting groove 3.

[0045] The novel CIP alkali solution recovery device provided in this embodiment is capable of causing particulate matter settled on the guide slope 2 to fall into the guide trough 12. When the alkali solution enters the storage tank 1 and is flushed to the guide slope 2, under the action of the slag collecting trough 3, the settled particulate matter is prevented from interfering with each other in the vertical direction of the drift direction, thereby further improving the smoothness of the flow of the settled particulate matter to the slag collecting trough 3 and reducing the incidence of floating of the settled particulate matter due to the impact of the water flow.

[0046] Specifically, it also includes a booster pump 19 and a reflux pipe 13, the input end of the booster pump 19 is connected to the output end of the pneumatic proportional integral valve 5, the input end of the reflux pipe 13 is connected to an output end of the booster pump 19, the output end of the reflux pipe 13 is connected to the liquid inlet pipeline, and an electric control valve 14 is installed on the reflux pipe 13; further, the other output end of the booster pump 19 extends into the regulating tank of the subsequent sewage treatment system; the electric control valve 14 is closed, and the booster pump 19 is started to pressurize the alkali liquid recovered in the storage tank 1 and inject it into the regulating tank in the subsequent sewage treatment station; when no alkali liquid is injected into the storage tank 1 for a long time, the electric control valve 14 is opened to allow part of the alkali liquid to enter the liquid inlet pipeline through the reflux pipe 13, which has a flushing effect on the particulate dirt settled on the diversion slope 2, and promotes the particulate dirt to gather in the slag collecting tank 3.

[0047] Specifically, the input end of the pneumatic proportional integral valve 5 extends into the middle and upper part of the storage tank 1 near the liquid inlet pipeline. After the alkali solution in the storage tank 1 has been standing for a long time, the clean liquid in the middle and upper layers contains less particulate matter. By absorbing the alkali solution in the upper part of the storage tank 1, the invasion of particulate matter into the downstream sewage treatment station can be reduced, and the particulate matter content in the recovered alkali solution can be further reduced, thereby avoiding an impact on the turbidity of the downstream sewage.

[0048] Specifically, an inspection port is provided in the middle and lower part of the storage tank 1, and a second sealing plate 15 is detachably installed at the inspection port; during major inspections, operators can enter the storage tank 1 through the inspection port to inspect and maintain the storage tank 1, thereby improving the convenience of subsequent inspections and maintenance.

[0049] Specifically, a liquid level gauge 16 connected to the interior of the storage tank 1 is installed at one end of the storage tank 1 ; the liquid level in the storage tank 1 can be monitored in real time through the liquid level gauge 16 .

[0050] Specifically, a maintenance platform 17 and a climbing ladder 18 are installed on the storage tank 1; through the climbing ladder 18 and the maintenance platform 17, it is convenient for operators to climb to the top of the storage tank 1 to perform operations, and a relatively stable operating platform can be provided for the operators, thereby improving the convenience of operation and the safety of operation.

[0051] The use process of the novel CIP alkali solution recovery device provided by the utility model is as follows: the waste alkali solution enters the storage tank 1 through the liquid inlet pipeline for storage. When the pH value of the wastewater in the regulating tank of the sewage treatment station is low, the pH sensor 6 starts the pneumatic proportional integral valve 5 through the external PLC controller; the alkaline waste liquid in the storage tank 1 is transported to the regulating tank of the sewage treatment station to adjust the pH in the regulating tank; when the pH returns to the normal value set by the PLC controller, the pneumatic proportional integral valve 5 is automatically closed to stop transporting the alkaline waste liquid to the regulating tank in the sewage treatment station; the waste alkali solution is used as the regulating The regulator for adjusting the pH in the pool uses the recovered alkali solution to adjust the acid-base balance of the sewage, and while recycling the alkali solution, reduces the fluctuation of the pH value of the sewage; the particulate dirt in the alkali solution entering the storage tank 1 through the liquid inlet pipeline settles on the diversion slope 2, and as the alkali solution enters from time to time through the liquid inlet pipeline, it can have an impact on the particulate dirt settled on the diversion slope 2. Under the inclination of the diversion slope 2 and the impact of the entering alkali solution, the particulate dirt is concentrated and settled in the slag collecting tank 3, and the particulate dirt falls into the slag collecting screen 10. The particulate dirt in the slag collecting screen 10 can be lifted up by the lifting component 9 and then removed.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A new type of CIP alkali solution recovery device, characterized in that: It includes: A storage tank (1) is used for recovering and storing alkali solution; a liquid inlet pipeline is provided on the storage tank (1); a guide slope (2) is provided at the bottom of the storage tank (1); the guide slope (2) gradually slopes downward toward a side away from the liquid inlet pipeline; a slag collecting tank (3) is provided at a location of the guide slope (2) away from the liquid inlet pipeline; an acid-base resistant pipeline (4), the acid-base resistant pipeline (4) being in communication with the interior of the storage tank (1); a pneumatic proportional integral valve (5) being installed on the acid-base resistant pipeline (4); A pH sensor (6), wherein the pH sensor (6) is electrically connected to the pneumatic proportional integral valve (5).

2. The novel CIP alkali solution recovery device according to claim 1 is characterized in that: The liquid inlet pipeline comprises a main pipe (7) and a plurality of branch pipes (8) evenly distributed on the main pipe (7), wherein the central axis of the branch pipe (8) is parallel to the inclined slope surface of the guide slope (2), and the central axis of the main pipe (7) is perpendicular to the central axis of the branch pipe (8).

3. The novel CIP alkali solution recovery device according to claim 2 is characterized in that: It also comprises a lifting component (9), a slag collecting screen (10) is placed in the slag collecting tank (3), and the lifting component (9) is integrally connected to the slag collecting screen (10).

4. The novel CIP alkali solution recovery device according to claim 3 is characterized in that: The top of the storage tank (1) is provided with an opening, and a first blocking plate (11) is detachably mounted on the opening.

5. The novel CIP alkali solution recovery device according to claim 1 is characterized in that: The guide slope (2) is provided with a plurality of guide grooves (12) converging toward the slag collecting groove (3), and the plurality of guide grooves (12) are dispersed and separated from each other at one end away from the slag collecting groove (3).

6. The novel CIP alkali solution recovery device according to claim 1 is characterized in that: It also includes a booster pump (19) and a return pipe (13), wherein the input end of the booster pump (19) is connected to the output end of the pneumatic proportional integral valve (5), the input end of the return pipe (13) is connected to an output end of the booster pump (19), the output end of the return pipe (13) is connected to a liquid inlet pipeline, and an electric control valve (14) is installed on the return pipe (13).

7. The novel CIP alkali solution recovery device according to claim 6 is characterized in that: The input end of the pneumatic proportional integral valve (5) extends into the storage tank (1) at the middle and upper part of one side adjacent to the liquid inlet pipeline.

8. The novel CIP alkali solution recovery device according to claim 1 is characterized in that: The storage tank (1) is provided with an inspection opening at the middle and lower part thereof, and a second blocking plate (15) is detachably mounted at the inspection opening.

9. The novel CIP alkali solution recovery device according to claim 8 is characterized in that: A liquid level meter (16) connected to the interior of the storage tank (1) is installed at one end of the storage tank (1).

10. The novel CIP alkali solution recovery device according to claim 9 is characterized in that: The storage tank (1) is provided with an inspection platform (17) and a climbing ladder (18).

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