Chemical adding device for adjusting PH of absorption tower

Abstract

The utility model relates to the field of dosing devices, in particular to a dosing device for adjusting the pH value of an absorption tower. The dosing device aims at solving the technical problems that in the prior art, direct dosing can cause inaccurate dosing ratio and uniform distribution cannot be achieved. The utility model discloses a dosing device for adjusting the pH value of an absorption tower. The dosing device comprises a dosing box assembly and a feeding pipe assembly, according to the dosing box assembly, a needle tube extrusion discharging design is adopted to push medicaments into the feeding pipe assembly, so that the injection force of the feeding pipe assembly is convenient to control, the dosing box is suitable for medicaments with different viscosities and properties, and no residue is left in the box after pushing; the feeding pipe assembly adopts the liquid spraying pipe which is spirally distributed and inclined downwards, the lower end area can be more uniformly covered during liquid spraying, and a water column which is obliquely sprayed can push liquid in the absorption tower to rotate, so that a medicament is fully dissolved in the liquid in the absorption tower.

Description

Technical Field

[0001] The utility model relates to the field of dosing devices, in particular to a dosing device for adjusting the pH of an absorption tower. Background Art

[0002] An absorption tower is a device used for mass transfer and reaction between gas and liquid. It is commonly used in industrial processes, especially in the chemical, environmental and energy fields. The basic principle of an absorption tower is to use the contact between gas and liquid to achieve the separation or conversion of the target substance through absorption, adsorption or chemical reaction.

[0003] The pH dosing process of an absorption tower is usually used to adjust and control the pH of the liquid in the absorption tower to optimize the efficiency of gas purification or chemical reactions. However, the pH dosing of existing absorption towers is basically done directly. The dosage ratio of the pH-adjusting drug is inaccurate, and the drug cannot be evenly dispersed and dissolved in the liquid of the absorption tower. This will lead to a violent reaction or uneven pH changes due to excessive dosing. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a dosing device for adjusting the pH of an absorption tower, which aims to solve the technical problems that direct dosing under the existing technology will lead to inaccurate dosage ratio and uneven distribution of drugs.

[0005] The technical solution of the utility model is: a dosing device for adjusting the pH of an absorption tower, comprising a dosing box assembly, a feed pipe assembly, a proportioning assembly, and a cleaning assembly; the dosing box assembly is provided with a feed pipe assembly near one end of the absorption tower; a proportioning assembly for accurately proportioning and mixing additives is provided at the front end of the dosing box assembly; a cleaning assembly for cleaning the inside of the dosing box assembly is provided at the upper end of the dosing box assembly.

[0006] Preferably, in the first step, the target pH value to be maintained in the absorption tower is determined, and according to the pH value adjusted as needed, the appropriate acid and alkali reagents are added to the proportioning component in a precise proportion and mixed evenly; in the second step, the valve of the proportioning component is opened, and the prepared acid and alkali reagents flow into the dosing box component, and the dosing box component adopts a needle tube extrusion discharging design to push the reagents into the feed pipe component. This design not only facilitates the control of the spraying force of the feed pipe component, but also is suitable for reagents of various viscosities and properties, and there is no residue in the box after pushing; in the third step, the feed pipe component adopts a spirally distributed downwardly inclined spray pipe, which can cover the lower end area more evenly when spraying, and the inclined sprayed water column can drive the liquid in the absorption tower to rotate, so that the reagent is fully dissolved with the liquid in the absorption tower; in the fourth step, after the dosing is completed, the valves of the feed pipe component and the proportioning component are closed, and the cleaning component is connected to the external water source to flush the inside of the dosing box component, and then the waste water is pushed out of the outside of the dosing box component.

[0007] Preferably, the dosing box assembly includes a main box body, a fixed frame, a push plate, a control cylinder and a seal; a "U"-shaped fixed frame is fixedly connected to the lower end of the main box body; a push plate is slidably connected to the inside of the main box body; the control cylinder installed on the inside of the fixed frame is started, and the control cylinder pushes up the push plate wrapped with a seal on the outside.

[0008] Preferably, a control cylinder is installed between the fixing frame and the push plate; a sealing member is installed on the outside of the push plate; and the liquid stored inside the main box is pressurized and pushed out.

[0009] Preferably, the feed pipe assembly includes an L-shaped connecting pipe, a nozzle and a liquid spray pipe; the lower end of the L-shaped connecting pipe is fixedly connected to the nozzle; a liquid spray pipe distributed along a spiral path is opened on the outside of the nozzle; the prepared acid and alkali agent is transported to the nozzle through the L-shaped connecting pipe, and is sprayed from the outside using a spirally distributed downward-inclined liquid spray pipe, so that the lower end area can be covered more evenly during the spraying.

[0010] Preferably, the proportioning component includes a proportioning box, a stirring mechanism and a connecting pipe; a stirring mechanism is installed on the inside of the proportioning box for evenly mixing various reagents with adjusted pH values; the proportioning box and the dosing box component are connected by a connecting pipe with a valve; according to the pH value to be adjusted, the appropriate acid and alkali reagents are added to the proportioning box of the proportioning component in a precise proportion, and the stirring mechanism is started to mix evenly, and the valve of the connecting pipe is opened to automatically flow the reagent into the dosing box component.

[0011] Preferably, the cleaning component includes a water inlet pipe, an annular distribution pipe, a water spray hole and a water outlet pipe; the lower end of the water inlet pipe is fixedly connected to the annular distribution pipe; after the dosing is completed, the valves of the feed pipe assembly and the proportioning assembly are closed, and the water inlet pipe of the cleaning component is connected to the external water source, and the water spray hole at the lower end of the annular distribution pipe sprays water to flush the inside of the dosing box assembly.

[0012] Preferably, a hidden water spray hole is provided at the lower end of the annular distribution pipe; a water outlet pipe with a sealing cover is provided on the side of the water inlet pipe; and then the sealing cover of the water outlet pipe is opened to push the wastewater out of the outside of the dosing box assembly.

[0013] Beneficial effects of the utility model:

[0014] The utility model puts suitable acid and alkali reagents into the proportioning component in a precise proportion in advance and mixes them evenly, and pushes the reagents into the feed pipe component through the medicine adding box component adopting a needle tube extrusion discharging design. This design is not only convenient for controlling the spraying force of the feed pipe component, but also suitable for reagents of various viscosities and properties. After pushing, there is no residue in the box. The feed pipe component adopts a spiral distribution and downward inclined spray pipe, which can more evenly cover the lower end area during spraying, and the inclined sprayed water column can promote the liquid in the absorption tower to rotate, so that the reagent is fully dissolved in the liquid in the absorption tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of the installation of the dosing device and the absorption tower of the utility model;

[0016] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the dosing device of the present invention;

[0017] Figure 3 Shown is another schematic diagram of the three-dimensional structure of the dosing device of the present invention;

[0018] Figure 4 What is shown is a schematic diagram of the cross-sectional structure of the dosing device of the present invention.

[0019] Explanation of the accompanying reference numerals: 1. Dosing box assembly; 101. Main box body; 102. Fixed frame; 103. Push plate; 104. Control cylinder; 105. Seal; 2. Feed pipe assembly; 201. L-shaped connecting pipe; 202. Nozzle; 203. Liquid spray pipe; 3. Proportioning assembly; 301. Proportioning box; 302. Stirring mechanism; 303. Connecting pipe; 4. Cleaning assembly; 401. Water inlet pipe; 402. Annular distribution pipe; 403. Water spray hole; 404. Water outlet pipe. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] See also Figure 1 The utility model provides an embodiment: a dosing device for adjusting the pH of an absorption tower, comprising a dosing box assembly 1, a feed pipe assembly 2, a proportioning assembly 3, and a cleaning assembly 4; the dosing box assembly 1 is provided with a feed pipe assembly 2 installed at one end thereof close to the absorption tower; the front end of the dosing box assembly 1 is provided with a proportioning assembly 3 for accurately proportioning and mixing additives; the upper end of the dosing box assembly 1 is provided with a cleaning assembly 4 for cleaning the interior of the dosing box assembly 1.

[0022] See also Figure 2 In this embodiment, the feed pipe assembly 2 includes an L-shaped connecting pipe 201, a nozzle 202 and a liquid spray pipe 203; the lower end of the L-shaped connecting pipe 201 is fixedly connected to the nozzle 202; the outside of the nozzle 202 is provided with a liquid spray pipe 203 distributed along a spiral path; the prepared acid and alkali reagents are transported to the nozzle 202 through the L-shaped connecting pipe 201, and are sprayed from the outside using a spiral distribution and downward-inclined liquid spray pipe 203, so that the lower end area can be more evenly covered when spraying.

[0023] See also Figure 3In this embodiment, the proportioning component 3 includes a proportioning box 301, a stirring mechanism 302 and a connecting pipe 303; the proportioning box 301 is installed with a stirring mechanism 302 for evenly mixing various pH-adjusted reagents; the proportioning box 301 is connected to the dosing box component 1 through a connecting pipe 303 with a valve; according to the pH value to be adjusted, the appropriate acid and alkali reagents are added to the proportioning box 301 of the proportioning component 3 in a precise proportion, and the stirring mechanism 302 is started to mix evenly, and the valve of the connecting pipe 303 is opened to automatically flow the reagents into the dosing box component 1.

[0024] See also Figure 4 In this embodiment, the medicine adding box assembly 1 includes a main box body 101, a fixing frame 102, a push plate 103, a control cylinder 104 and a sealing member 105; the lower end of the main box body 101 is fixedly connected to a "U"-shaped fixing frame 102; the inner side of the main box body 101 is slidably connected to the push plate 103; the control cylinder 104 installed inside the fixing frame 102 is started, and the control cylinder 104 pushes up the push plate 103 wrapped with a sealing member 105 on the outside, and the control cylinder 104 is installed between the fixing frame 102 and the push plate 103; the sealing member 105 is installed on the outside of the push plate 103; the liquid stored in the main box body 101 is pressurized and pushed out ; The cleaning component 4 includes an inlet pipe 401, an annular distribution pipe 402, a water spray hole 403 and an outlet pipe 404; the lower end of the water inlet pipe 401 is fixedly connected to the annular distribution pipe 402; after the dosing is completed, close the valves of the feed pipe component 2 and the proportioning component 3, and connect the water inlet pipe 401 of the cleaning component 4 to the external water source. The water spray hole 403 at the lower end of the annular distribution pipe 402 sprays water to flush the inside of the dosing box component 1, and a hidden water spray hole 403 is provided at the lower end of the annular distribution pipe 402; a water outlet pipe 404 with a sealing cover is provided on the side of the water inlet pipe 401; then open the sealing cover of the outlet pipe 404 to push the waste water out of the dosing box component 1.

[0025] When working, the first step is to determine the target pH value to be maintained in the absorption tower. According to the pH value to be adjusted as needed, the appropriate acid and alkali reagents are added into the proportioning box 301 of the proportioning component 3 in a precise proportion, and the stirring mechanism 302 is started to mix evenly. The valve of the connecting pipe 303 is opened and the reagents automatically flow into the dosing box component 1.

[0026] In the second step, the valve of the proportioning component 3 is opened, and the prepared acid and alkali reagents flow into the dosing box component 1. The control cylinder 104 installed on the inner side of the fixed frame 102 is started. The control cylinder 104 pushes up the push plate 103 with a seal 105 on the outside, and pressurizes and pushes out the liquid stored in the inside of the main box body 101. This design not only facilitates the control of the injection force of the feed pipe component 2, but also is suitable for various reagents with different viscosities and properties. There is no residue in the box after pushing.

[0027] In the third step, the prepared acid and alkali reagents are transported to the nozzle 202 through the L-shaped connecting pipe 201, and are sprayed from the outside through the downward-sloping spray pipe 203 in a spiral distribution. The spraying can cover the lower end area more evenly, and the inclined sprayed water column can drive the liquid in the absorption tower to rotate, allowing the reagents to fully dissolve with the liquid in the absorption tower.

[0028] In the fourth step, after the dosing is completed, close the valves of the feed pipe assembly 2 and the proportioning assembly 3, connect the water inlet pipe 401 of the cleaning assembly 4 to the external water source, and spray water from the water spray hole 403 at the lower end of the annular distribution pipe 402 to flush the inside of the dosing box assembly 1, and then open the sealing cover of the water outlet pipe 404 to push the waste water out of the dosing box assembly 1.

[0029] Through the above steps, the new type pre-puts the appropriate acid and alkali reagents into the proportioning component 3 according to the precise ratio and mixes them evenly, and pushes the reagents into the feed pipe component 2 through the needle tube extrusion discharging design of the medicine adding box component 1. This design is not only convenient for controlling the spraying force of the feed pipe component 2, but also suitable for reagents of various viscosities and properties. There is no residue in the box after pushing, and the spirally distributed downwardly inclined spray pipe 203 is adopted by the feed pipe component 2. The lower end area can be covered more evenly during spraying, and the inclined sprayed water column can drive the liquid in the absorption tower to rotate, so that the reagent can be fully dissolved with the liquid in the absorption tower.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A dosing device for adjusting the pH of an absorption tower, comprising a dosing box assembly (1); characterized in that: The invention also includes a feed pipe assembly (2), a proportioning assembly (3), and a cleaning assembly (4); the dosing box assembly (1) is provided with a feed pipe assembly (2) near one end of the absorption tower; the front end of the dosing box assembly (1) is provided with a proportioning assembly (3) for accurately proportioning and mixing the additives; the upper end of the dosing box assembly (1) is provided with a cleaning assembly (4) for cleaning the interior of the dosing box assembly (1); the dosing box assembly (1) includes a main box body (101), a fixing frame (102), a push plate (103), a control cylinder (104), and a sealing member (105); the lower end of the main box body (101) is fixedly connected to a "U"-shaped fixing frame (102); the inner side of the main box body (101) is slidably connected to a push plate (103); the fixing frame (102) and the push plate are connected to each other. (103) is provided with a control cylinder (104); a sealing member (105) is provided on the outside of the push plate (103); the feed pipe assembly (2) comprises an L-shaped connecting pipe (201), a nozzle (202) and a liquid spraying pipe (203); the lower end of the L-shaped connecting pipe (201) is fixedly connected to the nozzle (202); a liquid spraying pipe (203) distributed along a spiral path is provided on the outside of the nozzle (202); the proportioning assembly (3) comprises a proportioning box (301), a stirring mechanism (302) and a connecting pipe (303); a stirring mechanism (302) for uniformly mixing various medicaments with adjusted pH values ​​is provided on the inside of the proportioning box (301); the proportioning box (301) and the dosing box assembly (1) are connected via a connecting pipe (303) with a valve.

2. A dosing device for adjusting the pH of an absorption tower according to claim 1, characterized in that: The cleaning assembly (4) comprises a water inlet pipe (401), an annular distribution pipe (402), a water spray hole (403) and a water outlet pipe (404); the lower end of the water inlet pipe (401) is fixedly connected to the annular distribution pipe (402).

3. A dosing device for adjusting the pH of an absorption tower according to claim 2, characterized in that: A hidden water spray hole (403) is provided at the lower end of the annular distribution pipe (402); and a water outlet pipe (404) with a sealing cover is provided on the side of the water inlet pipe (401).

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