Acid mist treatment system for nickel sulfate solution oil removal and acid preparation process

Abstract

The utility model relates to a nickel sulfate solution oil removal and acid preparation process acid mist treatment system, which comprises an alkali liquor source and a washing assembly, the washing assembly comprises an acid mist absorption tower, a circulation box, a reflux pump, a sprayer and a PH detector, a reflux inlet of the acid mist absorption tower is communicated with the circulation box, the circulation box is provided with an alkali adding port communicated with the alkali liquor source, and the alkali adding port is communicated with the alkali liquor source. A liquid outlet of the circulation box is communicated with the sprayer through the reflux pump, the sprayer is mounted in the acid mist absorption tower, the PH detector is mounted on the circulation box, and the detection end of the PH detector extends into the circulation box; the circulating box can receive a solution from the bottom of the acid mist absorption tower, alkali liquor is added into the circulating box through the alkali liquor source so as to accurately adjust the pH value of the solution in the circulating box, and the pH value is adjusted in the circulating box instead of the acid mist absorption tower, so that the pH value of the solution can be accurately adjusted in the process of adjusting the pH value of the solution. And the pH value of the solution sprayed by the sprayer can be accurately controlled through the reflux pump.

Description

Technical Field

[0001] This utility model relates to the field of acid mist treatment technology, and in particular to an acid mist treatment system for nickel sulfate solution degreasing and acid preparation process. Background Technology

[0002] In the chemical industry, some tanks and containers generate acid mist. For example, the degreasing and acid preparation workshops for nickel sulfate solutions produce waste gas containing acid mist during production. Volatile acidic gases can affect human health. Prolonged exposure to polluted environments can damage multiple organs, including the eyes and heart, for workers. Therefore, these waste gases must be treated before being released into the environment.

[0003] An organic waste gas treatment system and method, as proposed in patent application CN110841439A, can be adopted. In this system, the alkaline scrubbing device includes a scrubbing tower, a reflux pump, and an alkali addition device. The scrubbing tower is equipped with an inlet pipe and an outlet pipe. Sprayers and a packing layer are arranged inside the scrubbing tower from top to bottom. The inlet pipe of the reflux pump is connected to the bottom of the scrubbing tower, and the outlet pipe of the reflux pump is connected to the sprayers. The alkali addition device includes an alkali storage tank and a delivery pipe. The alkali solution in the storage tank is delivered to the scrubbing tower through the delivery pipe. The reflux pump circulates the liquid in the scrubbing tower to the sprayers. The alkali addition device provides alkali solution to the interior of the scrubbing tower.

[0004] The pH value of the solution sprayed down the scrubbing tower continuously adjusts the pH value of the solution at the bottom of the tower. Controlling the pH value of this solution is difficult because the reflux pump directly feeds the bottom solution into the sprayers. If the pH value of the sprayed solution is too high, it can corrode the equipment; if the pH value is too low, the scrubbing efficiency will be low. Therefore, precise control of the pH value of the solution fed into the sprayers is necessary. Utility Model Content

[0005] In view of this, it is necessary to provide an acid mist treatment system for the nickel sulfate solution degreasing and acid preparation process, in order to solve the problem that it is difficult to control the pH value of the solution sprayed from the sprayer because the bottom solution of the washing tower is directly fed into the sprayer through a reflux pump.

[0006] This utility model provides an acid mist treatment system for the degreasing and acid preparation process of nickel sulfate solution, including an alkali source, a water source, and a washing assembly. The washing assembly includes an acid mist absorption tower, a circulation tank, a reflux pump, a sprayer, and a pH meter. The reflux port of the acid mist absorption tower is connected to the circulation tank. The circulation tank has an alkali addition port connected to the alkali source. The outlet of the circulation tank is connected to the sprayer via the reflux pump. The sprayer is installed inside the acid mist absorption tower. The pH meter is installed on the circulation tank, and the detection end of the pH meter extends into the circulation tank.

[0007] Furthermore, an air inlet is provided at the bottom side wall of the acid mist absorption tower, an air outlet is provided at the top of the acid mist absorption tower, a reflux port is located below the air inlet, and a sprayer is located above the air inlet.

[0008] Furthermore, it also includes a water source, and the circulation tank has a water inlet connected to the water source.

[0009] Furthermore, both the alkali inlet and the water inlet of the circulation tank are equipped with flow regulating valves.

[0010] Furthermore, the installation height of the reflux port of the acid mist absorption tower is greater than that of the circulation box.

[0011] Furthermore, the washing assembly also includes a backup pump and two control valves. The circulation tank has two outlets. One of the outlets of the circulation tank is connected to the sprayer via the return pump and one of the control valves. The other outlet of the circulation tank is connected to the sprayer via the backup pump and the other control valve.

[0012] Furthermore, it also includes a dosing assembly, the dosing end of which is connected to a dosing port opened on the side wall at the bottom of the acid mist absorption tower.

[0013] Furthermore, it also includes a fiber dehumidification component, an activated carbon adsorption box, a centrifugal fan, and a chimney connected in sequence, with the air inlet of the fiber dehumidification component connected to the air outlet of the acid mist absorption tower.

[0014] Furthermore, it also includes a pressure relief valve installed on the activated carbon adsorption box.

[0015] Furthermore, it also includes a thermometer and a cooling water circuit, wherein the thermometer is installed inside the activated carbon adsorption box, and the cooling water circuit is connected to the water source and the activated carbon adsorption box.

[0016] Compared with existing technologies, the circulation tank can receive the solution from the bottom of the acid mist absorption tower and add alkali solution to the circulation tank through an alkali source to precisely adjust the pH value of the solution in the circulation tank. Since the pH adjustment is carried out in the circulation tank, rather than in the acid mist absorption tower, the solution falling from the acid mist absorption tower will not affect the pH value of the solution in the circulation tank during the pH adjustment process. The pH value of the solution sprayed out by the sprayer can be accurately controlled by the reflux pump. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the nickel sulfate solution degreasing and acid preparation process acid mist treatment system provided in this embodiment of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the washing unit;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the Chinese medicine compounding component;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the activated carbon adsorption box. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1-2 As shown, the present invention provides an acid mist treatment system for nickel sulfate solution degreasing and acid preparation process, including an alkali source 100 and a washing assembly 300. The washing assembly 300 includes an acid mist absorption tower 310, a circulation tank 320, a reflux pump 330, a sprayer 340, and a pH meter 323. The reflux port 313 of the acid mist absorption tower 310 is connected to the circulation tank 320. The circulation tank 320 has an alkali inlet 321 connected to the alkali source. The outlet of the circulation tank 320 is connected to the sprayer 340 via the reflux pump 330. The sprayer 340 is installed inside the acid mist absorption tower 310. The washing assembly 300 also includes a pH meter 323, which is installed on the circulation tank 320, and the detection end of the pH meter 323 extends into the circulation tank 320.

[0023] In practice, the circulation tank 320 receives the solution from the bottom of the acid mist absorption tower 310, and alkali is added to the circulation tank 320 through the alkali source 100. Since the pH adjustment is carried out in the circulation tank 320 and not in the acid mist absorption tower 310, the solution falling from the acid mist absorption tower 310 will not affect the pH of the solution in the circulation tank 320 during the pH adjustment process. The pH of the solution sprayed out by the sprayer 340 can be accurately controlled by the reflux pump 330.

[0024] In this embodiment, the alkali source 100 can be an alkali pool or alkali tank to hold the alkali, and the alkali can be transported to the circulation tank 320 by a pump.

[0025] This embodiment also includes a water source 200, and a circulation tank 320 has a water inlet 322 connected to the water source 200. Both the alkali inlet 321 and the water inlet 322 of the circulation tank 320 are equipped with flow regulating valves. The flow regulating valves control the flow rate of the alkali solution and water. In this embodiment, the water source 200 can be a pool or storage tank to hold water, which is then pumped to the circulation tank 320.

[0026] In this embodiment, the washing component 300 neutralizes the acid mist in the exhaust gas by spraying alkaline solution. The acid mist absorption tower 310 has a return port 313 connected to a circulation tank 320. The circulation tank 320 has an alkali inlet 321 and a water inlet 322 connected to an alkaline solution source 100 and a water source 200, respectively. The outlet of the circulation tank 320 is connected to a sprayer 340 via a return pump 330. The sprayer 340 is installed inside the acid mist absorption tower 310.

[0027] In this embodiment, the acid mist absorption tower 310 has an air inlet 311 on the side wall at the bottom, an air outlet 312 on the top, a reflux port 313 located below the air inlet 311, and a sprayer 340 located above the air inlet 311.

[0028] To reduce costs, the solution at the bottom of the acid mist absorption tower 310 is automatically fed into the circulation tank 320. In one embodiment, the installation height of the reflux port 313 of the acid mist absorption tower 310 is greater than that of the circulation tank 320.

[0029] To prevent a failure of the reflux pump 330 from affecting the entire nickel sulfate solution degreasing and acid preparation process acid mist treatment system, in one embodiment, the washing assembly 300 further includes a backup pump 331 and two control valves. The circulation tank 320 has two outlets. One outlet of the circulation tank 320 is connected to the sprayer 340 via the reflux pump 330 and one of the control valves, and the other outlet of the circulation tank 320 is connected to the sprayer 340 via the backup pump 331 and the other control valve.

[0030] like Figure 3 As shown, this embodiment also includes a dosing assembly 400, the dosing end of which is connected to a dosing port 314 opened on the side wall at the bottom of the acid mist absorption tower 310. Acid washing exhaust gas deodorizer, SDG adsorbent, slaked lime, calcium hydroxide, calcium carbonate, etc., can be added to the acid mist absorption tower 310.

[0031] It should be noted that if the pH value of the sprayed solution is too high, it will affect the absorption effect of the adsorbent.

[0032] In one embodiment, the dosing assembly 400 includes a dosing tank 410 and a dosing pump 420. The dosing tank 410 is connected to the dosing port 314 of the acid mist absorption tower 310 via the dosing pump 420. The dosing tank 410 can be connected to an alkali source 100 and a water source 200 to adjust the pH value of the reagent delivered to the acid mist absorption tower 310.

[0033] In one embodiment, the washing assembly 300 further includes a reuse tank 350, and the liquid outlet at the bottom side wall of the acid mist absorption tower 310 is connected to the reuse tank 350 via a valve. When the solution level at the bottom of the acid mist absorption tower 310 is high, excess liquid can be transported to the reuse tank 350, and the solution in the reuse tank 350 can be reused directly or after treatment.

[0034] This embodiment also includes a fiber dehumidification component 500, an activated carbon adsorption box 600, a centrifugal fan 700 and a chimney 800 connected in sequence. The air inlet of the fiber dehumidification component 500 is connected to the air outlet 312 of the acid mist absorption tower 310.

[0035] The fiber dehumidification component 500 removes various mist particles from the airflow, achieving the function of capturing mist and purifying the gas. The activated carbon adsorption box 600 removes harmful substances from the exhaust gas, such as volatile organic compounds (VOCs) and odorous gases, thereby purifying the exhaust gas. After passing through the acid mist absorption tower 310, the fiber dehumidification component 500, and the activated carbon adsorption box 600, the exhaust gas is discharged into the atmosphere by the centrifugal fan 700.

[0036] like Figure 4As shown, in order to avoid excessive pressure inside the activated carbon adsorption box 600, a pressure relief valve 610 installed on the activated carbon adsorption box 600 is also included in one embodiment.

[0037] To prevent spontaneous combustion due to excessively high temperature inside the activated carbon adsorption box 600, one embodiment also includes a thermometer 620 and a cooling water circuit 630. The thermometer 620 is installed inside the activated carbon adsorption box 600, and the cooling water circuit 630 is connected to the activated carbon adsorption box 600.

[0038] One end of the cooling water path 630 is connected to the water source 200, and the other end of the cooling water path 630 extends into the activated carbon adsorption box 600 and is connected to the nozzle.

[0039] This embodiment also includes a collection tank 900, which is connected to the drainage end of the acid mist absorption tower 310, the fiber dehumidification component 500, the activated carbon adsorption box 600, and the centrifugal fan 700, for collecting and storing waste liquid.

[0040] Compared with the prior art: The circulation tank 320 can receive the solution from the bottom of the acid mist absorption tower 310, and add alkali solution to the circulation tank 320 through the alkali source 100. Since the pH adjustment is carried out in the circulation tank 320 and not in the acid mist absorption tower 310, the solution falling from the acid mist absorption tower 310 will not affect the pH value of the solution in the circulation tank 320 during the pH adjustment process. The pH value of the solution sprayed out by the sprayer 340 can be accurately controlled by the reflux pump 330.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sulfuric acid nickel liquid oil removal and acid preparation process acid mist treatment system, characterized in that, It comprises: an alkali source; a washing assembly comprising an acid mist absorption tower, a circulating tank, a reflux pump, a sprayer and a PH detector, the reflux port of the acid mist absorption tower being communicated with the circulating tank, the circulating tank having an alkali adding port communicated with the alkali source, the liquid outlet of the circulating tank being communicated with the sprayer via the reflux pump, the sprayer being installed in the acid mist absorption tower, the PH detector being installed on the circulating tank and the detection end of the PH detector extending into the circulating tank.

2. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 1, characterized in that, The sidewall of the bottom of the acid mist absorption tower is provided with an air inlet, the top of the acid mist absorption tower is provided with an air outlet, the reflux port is arranged below the air inlet, and the sprayer is arranged above the air inlet.

3. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 1, characterized in that, It further comprises a water source, and the circulating tank is provided with a water adding port communicated with the water source.

4. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 1, characterized in that, The alkali adding port and the water adding port of the circulating tank are both provided with flow regulating valves.

5. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 1, characterized in that, The installation height of the reflux port of the acid mist absorption tower is greater than that of the circulating tank.

6. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 1, characterized in that, The washing assembly further comprises a standby pump and two control valves, the circulating tank has two liquid outlets, one of the liquid outlets of the circulating tank is communicated with the sprayer via the reflux pump and one of the control valves, and the other liquid outlet of the circulating tank is communicated with the sprayer via the standby pump and the other control valve.

7. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 1, characterized in that, It further comprises a medicine adding assembly, and the medicine adding end of the medicine adding assembly is connected with the medicine adding port provided in the sidewall of the bottom of the acid mist absorption tower.

8. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 2, characterized in that, It further comprises a fiber dehumidification assembly, an activated carbon adsorption tank, a centrifugal fan and a chimney which are communicated in sequence, and the air inlet end of the fiber dehumidification assembly is communicated with the air outlet of the acid mist absorption tower.

9. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 8, characterized in that, It further comprises a pressure relief valve installed on the activated carbon adsorption tank.

10. The acid mist treatment system for oil removal and acid preparation process of nickel sulfate solution according to claim 8, characterized in that, It further comprises a thermometer and a cooling water circuit, the thermometer is installed in the activated carbon adsorption tank, and the cooling water circuit is communicated with the activated carbon adsorption tank.

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