Alkali liquor recovery device

Abstract

The utility model discloses an alkali liquor recovery device which comprises a bottom plate, a neutralizing tank and a distillation tank are fixed on the upper surface of the bottom plate, an adding pipe is arranged at the top end of the neutralizing tank, a stirring assembly is arranged in the middle of the neutralizing tank, a liquid discharging pipe is fixedly connected to the bottom of the neutralizing tank, and a liquid inlet pipe is fixed at the top end of the side wall of the distillation tank. The other end of the liquid inlet pipe is fixedly connected with a hose, a filtering assembly is connected between the hose and the liquid discharging pipe, and a discharging pipe is arranged at the bottom of the distillation tank. According to the utility model, the neutralization tank, the distillation tank, the stirring assembly, the liquid discharge pipe, the liquid inlet pipe, the filtering assembly and the pressurizing assembly are arranged, after waste alkali liquid is neutralized in the neutralization tank, a mixed solution in the neutralization tank is directly injected into the distillation tank without waiting for precipitation, and the solution is filtered through the filtering assembly in the middle, so that a clarified recovered solution is obtained; and the speed of the solution passing through the filtering assembly is increased in a manner of pressurizing the interior of the neutralizing tank by the pressurizing assembly, so that the filtering efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lye recovery technical field especially relates to a lye recovery device. BACKGROUND

[0002] The electrolytic water waste lye recovery procedure mainly includes the following steps. Neutralization reaction: neutralization reaction is carried out by slowly adding neutralizing agent until the acidity of waste lye reaches neutral. Precipitation separation: pour the neutralized waste liquid into a funnel, stand for a period of time, and separate the precipitate from the solution. Discard the supernatant and leave the precipitate. Filtrate treatment: filter the precipitate with filter paper and filter cartridges. The filtered liquid is the recovery solution of waste lye. Recovery treatment: concentrate the recovery solution to remove water. Distillation and other methods can be used.

[0003] The electrolytic water waste lye is mainly derived from alkaline wastewater generated during the electrolytic water hydrogen production process. These wastewaters contain a large amount of sodium hydroxide and other inorganic salts, which can pollute the environment if not properly treated. Through the above recovery procedure, these resources can be effectively recovered and utilized, reducing environmental pollution and production costs. However, the current lye recovery device has a long waiting time for precipitation during the recovery process, which affects the overall lye recovery processing efficiency. Secondly, when using filter paper and filter cartridges for filtration, the solution passes through the filter paper slowly, resulting in low filtration efficiency. Therefore, to overcome the above shortcomings, the utility model provides a lye recovery device. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a lye recovery device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lye recovery device, comprising a bottom plate, the bottom plate upper surface is fixed with neutralization tank and distillation tank, the neutralization tank top is equipped with the adding pipe, and the neutralization tank middle part is equipped with the stirring component, the neutralization tank bottom is fixedly connected with the liquid discharge pipe, the distillation tank side wall top is fixed with the liquid inlet pipe, and the other end of liquid inlet pipe is fixedly connected with the hose, the filter component is connected between the hose and the liquid discharge pipe, the distillation tank bottom is equipped with the discharge pipe, and the distillation tank inside bottom end is installed with electric heater, the distillation tank side wall top is fixed with the condenser pipe, the neutralization tank outer wall is equipped with the pressurizing component that fills the gas in the neutralization tank interior.

[0006] Further, the adding pipe top is equipped with detachable sealing cover, and the discharge pipe bottom is fixed with detachable bottom cover.

[0007] Further, the stirring component includes a motor fixed to the top of the neutralization tank, and the motor bottom output end is fixedly connected with a vertical shaft, and the vertical shaft bottom end is fixedly connected with a stirring blade.

[0008] Further, the neutralization tank is fixedly connected with a sampling pipe at one end, and a second valve is fixedly arranged in the middle of the sampling pipe.

[0009] Further, the liquid discharge pipe is fixedly connected with a first valve at one end close to the neutralization tank.

[0010] Further, the filter assembly comprises a shell fixedly connected with the liquid discharge pipe, and the shell is designed as an open type at one side away from the liquid discharge pipe, a frame plate is clamped in the shell, a plurality of filter papers are fixedly arranged in the frame plate, a cover plate is fixedly connected with the frame plate at the open side of the frame plate, and the hose is communicated with the cover plate at one end away from the liquid inlet pipe.

[0011] Further, the pressurizing assembly comprises an air pump fixedly arranged on the outer sidewall of the neutralization tank, an exhaust pipe is fixedly connected with the air outlet of the air pump, and the other end of the exhaust pipe is communicated with the neutralization tank, a one-way valve is fixedly arranged in the middle of the exhaust pipe, and a pressure gauge is arranged on the sidewall of the neutralization tank.

[0012] The alkali liquor recovery device has the advantages that:

[0013] 1. When the alkali liquor recovery device is used, the neutralization tank, the distillation tank, the stirring assembly, the liquid discharge pipe, the liquid inlet pipe, the filter assembly and the pressurizing assembly are arranged, the waste alkali liquor is neutralized in the neutralization tank, and then the mixed solution in the neutralization tank is directly injected into the distillation tank without waiting for precipitation, the solution is filtered through the filter assembly, and the filtered solution is obtained, and the pressurizing assembly is used to pressurize the inside of the neutralization tank to improve the filtering speed of the solution through the filter assembly, thereby improving the filtering efficiency.

[0014] 2. When the alkali liquor recovery device is used, the filter assembly is arranged, the filter assembly comprises a shell, a frame plate and a cover plate, and filter papers are arranged in the frame plate, so that the cover plate can be disassembled from the shell after each use to replace the frame plate and the filter papers in the shell, thereby ensuring that the next filtering can be smoothly performed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments. Obviously, the drawings described in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0016] Figure 1 The overall schematic view of the present application;

[0017] Figure 2 The partial perspective view of the present application;

[0018] Figure 3 TheFigure 1 Enlarged view at A.

[0019] Reference signs are as follows:

[0020] 1, bottom plate; 2, neutralization tank; 3, distillation tank; 4, adding pipe; 5, stirring assembly; 51, motor; 52, vertical shaft; 53, stirring blade; 6, liquid discharge pipe; 61, first valve; 7, liquid inlet pipe; 8, hose; 9, filter assembly; 91, shell; 92, frame plate; 93, filter paper; 94, cover plate; 10, discharge pipe; 11, electric heater; 12, condenser pipe; 13, pressurizing assembly; 131, air pump; 132, exhaust pipe; 14, sampling pipe; 141, second valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] As Figures 1-3 shown, it relates to a lye recovery device, including bottom plate 1, the upper surface of bottom plate 1 is fixed with neutralization tank 2 and distillation tank 3, neutralization tank 2 top is equipped with adding pipe 4, and the middle part of neutralization tank 2 is equipped with stirring assembly 5, and the bottom of neutralization tank 2 is fixedly connected with liquid discharge pipe 6, and the side wall top of distillation tank 3 is fixed with liquid inlet pipe 7, and the other end of liquid inlet pipe 7 is fixedly connected with hose 8, and filter assembly 9 is connected between hose 8 and liquid discharge pipe 6, and the bottom of distillation tank 3 is equipped with discharge pipe 10, and electric heater 11 is installed at the inside bottom of distillation tank 3, and the side wall top of distillation tank 3 is fixed with condenser pipe 12, and the outside wall of neutralization tank 2 is equipped with pressurizing assembly 13 for inflating the inside of neutralization tank 2.

[0023] Adding pipe 4 top is equipped with detachable sealing cover, and the bottom end of discharge pipe 10 is fixed with detachable bottom cover.

[0024] In the embodiment, the sealing cover is rotatably connected with adding pipe 4 through thread, and waste lye and neutralization solution can be added to the inside of neutralization tank 2 by adding pipe 4 by opening the sealing cover. The bottom cover is connected with discharge pipe 10 through bolt, and after distillation, the bottom cover can be disassembled, so that the concentrated solution is discharged from discharge pipe 10.

[0025] Stirring assembly 5 includes motor 51 fixed on the top of neutralization tank 2, and the bottom output end of motor 51 is fixedly connected with vertical shaft 52, and the bottom end of vertical shaft 52 is fixedly connected with stirring blade 53.

[0026] When the waste lye and the neutralizing solution are neutralized in the neutralizing tank 2, the stirring blade 53 is driven to rotate by the motor 51, and the two solutions are stirred by the stirring blade 53, so as to improve the neutralization efficiency.

[0027] The sampling pipe 14 is fixedly connected to the bottom end of the neutralizing tank 2, and the second valve 141 is fixedly arranged in the middle of the sampling pipe 14.

[0028] During the neutralization process, the neutralizing solution can be sampled by opening the second valve 141, and the acidity and alkalinity of the solution are detected, so as to determine whether the neutralization reaction is completed.

[0029] The first valve 61 is fixedly connected to one end of the drain pipe 6 close to the neutralizing tank 2.

[0030] After the first valve 61 is opened, the solution in the neutralizing tank 2 can be injected into the distillation tank 3 along the drain pipe 6.

[0031] The filtering assembly 9 comprises a shell 91 fixedly connected to the drain pipe 6, and the shell 91 is designed as an open type on the side away from the drain pipe 6. The frame plate 92 is clamped in the shell 91, the multiple layers of filter paper 93 are fixedly arranged in the frame plate 92, the cover plate 94 is fixedly connected to the open side of the frame plate 92 by means of bolts, and the hose 8 is communicated with the cover plate 94 on the side away from the liquid inlet pipe 7.

[0032] After the solution is neutralized, there are precipitates in the solution. When the solution is discharged along the drain pipe 6, the precipitates in the solution are intercepted, and the solution passes through the filter paper 93 and then enters the distillation tank 3 along the hose 8 and the liquid inlet pipe 7. When the filter paper 93 needs to be replaced, the cover plate 94 is detached from the shell 91, the frame plate 92 in the shell 91 is taken out, and the frame plate 92 and the filter paper 93 are replaced together.

[0033] The pressurizing assembly 13 comprises the air pump 131 fixed to the outer side wall of the neutralizing tank 2. The air outlet of the air pump 131 is fixedly connected with the exhaust pipe 132, the other end of the exhaust pipe 132 is communicated with the neutralizing tank 2, the one-way valve is fixedly arranged in the middle of the exhaust pipe 132, and the pressure gauge is installed on the side wall of the neutralizing tank 2.

[0034] When the neutralizing solution is discharged through the drain pipe 6, the air pump 131 can be used to inflate and pressurize the neutralizing tank 2, so that the pressure in the neutralizing tank 2 is increased, the solution can pass through the filter paper 93 more quickly, and the filtering efficiency is improved.

[0035] Working principle: first through the addition of pipe 4 to the neutralization tank 2 into the waste lye and neutralization solution, then cover the sealing cover after starting motor 51 drive stirring blade 53 to the solution stirring, neutralization process can be through sampling pipe 14 sampling to determine whether to complete the neutralization, after neutralization, through the air pump 131 to the inside of neutralization tank 2 inflation pressure, and observe the pressure gauge on the side wall of neutralization tank 2, when the pressure reaches the specified value, open the first valve 61 make the solution along the liquid discharge pipe 6 discharge, solution after filtering assembly 9 along the hose 8 and liquid inlet pipe 7 into the distillation tank 3, then start the electric heater 11 to the solution heating, remove the moisture in the solution, realize the concentration of the solution, the water vapor generated by heating along the condenser pipe 12 discharge, after the concentration open the bottom of the discharge pipe 10 bottom cover, the solution can be discharged.

[0036] The above disclosed preferred embodiments of the present application are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the present application to only the specific implementation. Obviously, according to the content of the specification, many modifications and changes can be made. The present application is selected and described in detail, in order to better explain the principle and practical application of the present application, so that the skilled in the art can well understand and use the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A caustic recovery apparatus comprising a floor (1), characterised in that: The bottom plate (1) upper surface is fixed with neutralization tank (2) and distillation tank (3), the neutralization tank (2) top is equipped with adding pipe (4), and the neutralization tank (2) middle part is equipped with stirring assembly (5), the neutralization tank (2) bottom is fixedly connected with drain pipe (6), the distillation tank (3) side wall top is fixed with liquid inlet pipe (7), and the other end of liquid inlet pipe (7) is fixedly connected with hose (8), the hose (8) and drain pipe (6) are connected with filter assembly (9), the distillation tank (3) bottom is equipped with discharge pipe (10), and the inside bottom of distillation tank (3) is installed with electric heater (11), the distillation tank (3) side wall top is fixed with condenser pipe (12), the neutralization tank (2) outside wall is equipped with pressurizing assembly (13) for inflating the inside of neutralization tank (2).

2. The caustic recovery device of claim 1, wherein: The adding pipe (4) top is equipped with detachable sealing cover, and the discharge pipe (10) bottom is fixedly connected with detachable bottom cover.

3. The caustic recovery device of claim 1, wherein: The stirring assembly (5) includes motor (51) fixed on the top of neutralization tank (2), and the bottom output end of motor (51) is fixedly connected with vertical shaft (52), and the bottom end of vertical shaft (52) is fixedly connected with stirring blade (53).

4. The caustic recovery device of claim 1, wherein: The bottom end of neutralization tank (2) is fixedly connected with sampling pipe (14), and the middle part of sampling pipe (14) is fixedly connected with second valve (141).

5. The caustic recovery device of claim 1, wherein: The drain pipe (6) is fixedly connected with first valve (61) near one end of neutralization tank (2).

6. The caustic recovery device of claim 1, wherein: The filter assembly (9) includes housing (91) fixedly connected with drain pipe (6), and the side away from drain pipe (6) of housing (91) is designed as open, the inside of housing (91) is clamped with frame plate (92), the inside of frame plate (92) is fixedly connected with multiple layers of filter paper (93), the open side of frame plate (92) is fixedly connected with cover plate (94) through bolts, and the end of hose (8) away from liquid inlet pipe (7) is communicated with cover plate (94).

7. The caustic recovery device of claim 1, wherein: The pressurizing assembly (13) includes air pump (131) fixed on the outside wall of neutralization tank (2), the air outlet of air pump (131) is fixedly connected with exhaust pipe (132), and the other end of exhaust pipe (132) is communicated with neutralization tank (2), the middle part of exhaust pipe (132) is fixedly connected with one-way valve, and the side wall of neutralization tank (2) is installed with pressure gauge.

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