Waste gas absorption device for copper standard solution

Abstract

The utility model discloses a waste gas absorption device for a copper standard solution. An exhaust fan is arranged in the connecting groove; the exhaust cylinder is in a cylinder shape with one open end and one closed end; an exhaust pipe is arranged at the closed end of the exhaust funnel; an anti-suck-back pipe inserted into the tail gas absorption vessel is arranged at the tail part of the exhaust pipe; the hooks are arranged along the top wall in the exhaust funnel in the axial direction; the solution tank is arranged on the bottom wall in the exhaust funnel and is used for containing a sodium hydroxide solution; the capillary plates are in one-to-one correspondence with the hooks, and the bottoms of the capillary plates are immersed in the sodium hydroxide solution; and a plurality of air holes are formed in each capillary plate. According to the copper dissolving device, gas in the dissolving box is guided into the exhaust funnel, the sodium hydroxide solution in the exhaust funnel is used for carrying out primary absorption treatment on tail gas, the gas after absorption is guided into the absorption vessel through the suck-back prevention device, and secondary absorption treatment is carried out through the absorption vessel, so that toxic gas generated in the copper dissolving process is effectively removed.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal solution device field, specifically relate to a copper standard solution waste gas absorption device. BACKGROUND

[0002] The standard solution refers to the reagent solution of known accurate concentration. The standard solution includes iron, manganese, nickel, copper, silicon, vanadium and other metals, nonmetals, petroleum, anion, standard sample and standard solution. Among them, the preparation method of copper standard solution is as follows: accurately taking 0.5001g of pure copper (purity is not less than 99.99%), first treating the surface with HNO3 solution according to the proportion of 1:1 for a moment, until the black oxide skin is completely dissolved, washing with deionized water, then washing with anhydrous alcohol, drying in a desiccator after air drying, and placing in a 250ml beaker, covering with a surface dish. Then carefully add 20ml of high-purity HNO3 solution to the beaker, dissolve according to the proportion of 1:1, then add 100ml of 2.5mol / L sulfuric acid solution, and remove nitrogen oxide. After the beaker cools down, transfer the copper solution to a 500ml volumetric flask, and dilute with deionized water to obtain a copper standard solution with a mass concentration of about 1000ug / ml.

[0003] In the above process, the removal of nitrogen oxide during the dissolution of copper is carried out by boiling, and the generated nitrogen oxide is toxic. During the boiling process, the toxic gas directly diffuses in the air, so the tail gas treatment is difficult. The existing dissolution device usually uses fume hood to solve the tail gas problem by directional discharge of tail gas during solution preparation, and does not treat the tail gas of the device, so there is still a great risk in the dissolution process, and safety problems are easy to occur. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a copper standard solution waste gas absorption device to solve the problem of great risk in the tail gas treatment of copper standard solution preparation process in the prior art.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is as follows:

[0006] A copper standard solution waste gas absorption device, comprising:

[0007] The dissolution box has a connecting groove on one side wall and an air inlet on the other side wall; an exhaust fan is arranged in the connecting groove;

[0008] The exhaust cylinder is horizontally placed, one end is open and the other end is closed; the open end of the exhaust cylinder is inserted into the connecting groove; the closed end of the exhaust cylinder is provided with an exhaust pipe, the tail part of the exhaust pipe is provided with an anti-suck-back pipe which is smaller at the top and larger at the bottom, and the anti-suck-back pipe is vertically inserted into the sodium hydroxide solution below the liquid level in the tail gas absorption dish;

[0009] hooks, arranged in the top wall of the exhaust cylinder in the axial direction;

[0010] solution tank, arranged in the bottom wall of the exhaust cylinder, for containing sodium hydroxide solution;

[0011] capillary plates, each of which is hung on a hook, and the bottom of each capillary plate is immersed in the sodium hydroxide solution; each capillary plate is provided with a plurality of air holes.

[0012] In particular, the outer wall of the part of the exhaust cylinder inserted into the connecting groove is covered with an elastic sealing layer.

[0013] In particular, the exhaust cylinder is divided into a front half with a connecting neck and a rear half with an exhaust pipe, the bottom wall of the front half of the exhaust cylinder is provided with a first solution tank, the bottom wall of the rear half of the exhaust cylinder is provided with a second solution tank, and the front half of the exhaust cylinder and the rear half of the exhaust cylinder are connected by threads.

[0014] Further, the first liquid adding pipe vertically penetrating the top wall of the front half of the exhaust cylinder and the second liquid adding pipe vertically penetrating the top wall of the rear half of the exhaust cylinder are further included, and the bottom of the first liquid adding pipe and the second liquid adding pipe respectively extends into the first solution tank and the second solution tank.

[0015] Further, the transparent observation window arranged on the side wall of the exhaust cylinder is further included.

[0016] In particular, the anti-suck-back pipe is provided with a floating ball, the inner diameter of the anti-suck-back pipe and the outer diameter of the floating ball are the same height as the critical point, and the liquid level in the tail gas absorption dish is higher than the critical point.

[0017] In particular, the sodium hydroxide solution in the tail gas absorption dish further contains a phenolphthalein color developing agent.

[0018] In particular, the front end of the exhaust cylinder is further connected with a connecting neck with a diameter smaller than the diameter of the body of the exhaust cylinder, and the connecting neck is inserted into the connecting groove.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] The utility model discloses a device for dissolving copper, which comprises a solution box, an exhaust cylinder, an anti-suck-back pipe and a tail gas absorption dish. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1The utility model discloses a device structure schematic view.

[0022] The explanation of each reference numeral in the drawing is as follows: dissolving box - 1; connecting groove - 101; air inlet - 102; exhaust fan - 103;

[0023] Exhaust cylinder - 2; connecting neck - 201; exhaust pipe - 202; anti-suckback pipe - 203; tail gas absorption dish - 204; hook - 205; solution tank - 206; first solution tank - 2061; second solution tank - 2062; first liquid adding pipe - 2063; second liquid adding pipe - 2064; capillary plate - 207; air hole - 208; floating ball - 209. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, so that the conception of the utility model, the solved technical problems, the technical features of the technical scheme and the brought technical effects can be further understood.

[0025] As Figure 1 shown in the drawing, a copper standard solution waste gas absorption device, comprising:

[0026] Dissolving box 1, one side wall is provided with connecting groove 101, and the other side wall is provided with air inlet 102; connecting groove 101 is internally provided with exhaust fan 103;

[0027] Exhaust cylinder 2 is horizontally placed, and one end is open and the other end is closed; the open end of exhaust cylinder 2 is inserted into connecting groove 101; the closed end of exhaust cylinder 2 is provided with exhaust pipe 202, the tail part of exhaust pipe 202 is provided with anti-suckback pipe 203 which is small at the top and large at the bottom, and anti-suckback pipe 203 is vertically inserted into the liquid surface of sodium hydroxide solution in tail gas absorption dish 204 below;

[0028] Hook 205 is provided with a plurality of hook 205, and is arranged along the axial direction on the top wall in exhaust cylinder 2;

[0029] Solution tank 206 is arranged on the bottom wall in exhaust cylinder 2 and is used for containing sodium hydroxide solution;

[0030] Capillary plate 207 is provided with a plurality of capillary plate 207, and each hook 205 is hung with one capillary plate 207, and the bottom of capillary plate 207 is immersed in sodium hydroxide solution; a plurality of air holes 208 are arranged on each capillary plate 207.

[0031] In the utility model, the main working principle is as follows:

[0032] The dissolving box 1 is connected to the exhaust cylinder 2 through the connecting groove 101, and the toxic gas (nitrogen oxide) generated in the process of dissolving the metal copper is directly discharged into the exhaust cylinder 2 through the exhaust fan 103 in the connecting groove 101 after the exhaust fan 103 is started. At this time, the capillary plate 207 is hung in the exhaust cylinder 2 through the hook 205, and can be very conveniently disassembled and cleaned in time after the experiment is finished. The air holes 208 provided on the capillary plate 207 are mainly used for the reaction gas to pass through the capillary plate 207. The gas after the reaction and absorption of the capillary plate 207 passes through the air holes 208 under the action of the exhaust fan 103, enters the anti-back suction pipe 203 through the exhaust pipe 202 at the tail of the exhaust cylinder 2, and then enters the tail gas absorption dish 204 below, and after the treatment and absorption of the tail gas absorption dish 204, the nitrogen oxide and other harmful gases in the gas are basically removed, thereby effectively reducing the ventilation requirement for the copper dissolving environment. The exhaust fan 103 is directly fixed on the inner wall of the dissolving box 1 through the support, so as to avoid blocking the installation of the exhaust cylinder 2. The exhaust fan 103 needs to be started before the copper metal is put in, so as to avoid the leakage of a small amount of harmful gas in the early stage.

[0033] As a preferred embodiment, the outer wall of the part of the exhaust cylinder 2 inserted into the connecting groove 101 is covered with an elastic sealing layer.

[0034] In the embodiment, the main function of the elastic sealing layer outside the connecting neck 201 is to enhance the connection stability of the connecting neck 201 and the dissolving box 1, and to enhance the sealing property, so as to avoid the escape of harmful gas from the gap between the connecting neck 201 and the dissolving box 1.

[0035] As a preferred embodiment, the exhaust cylinder 2 is divided into a front half part with the connecting neck 201 and a rear half part with the exhaust pipe 202, the bottom wall of the front half part of the exhaust cylinder 2 is provided with the first solution groove 2061, the bottom wall of the rear half part of the exhaust cylinder 2 is provided with the second solution groove 2062, and the front half part of the exhaust cylinder 2 and the rear half part of the exhaust cylinder 2 are connected through threads.

[0036] In the embodiment, in order to facilitate the installation and dismounting of the exhaust cylinder 2, the exhaust cylinder 2 is divided into two parts, a front half and a rear half, both of which are provided with a complete solution tank 206 and are connected by screwing. During installation, the first solution tank 2061 of the front half of the exhaust cylinder 2 is first ensured to be at the lowest position, then the connecting neck 201 is inserted into the dissolving box 1, and then the rear half of the exhaust cylinder 2 is screwed to complete the installation process.

[0037] As a further embodiment, a first liquid adding pipe 2063 vertically penetrating the top wall of the front half of the exhaust cylinder 2 is further included, and a second liquid adding pipe 2064 vertically penetrating the top wall of the rear half of the exhaust cylinder 2 is further included, and the bottom of the first liquid adding pipe 2063 and the second liquid adding pipe 2064 respectively extends into the first solution tank 2061 and the second solution tank 2062.

[0038] In the embodiment, the front half of the exhaust cylinder 2 and the rear half of the exhaust cylinder 2 are each provided with a separate liquid adding pipe, and the sodium hydroxide solution is added and supplemented to the respective solution tanks through the separate liquid adding pipes.

[0039] As a further embodiment, a transparent observation window is further provided on the side wall of the exhaust cylinder 2.

[0040] By providing the transparent observation window on the side wall of the exhaust cylinder 2, the internal structure of the exhaust cylinder 2 can be observed, and the staff can supplement the sodium hydroxide solution in the first solution tank 2061 and the second solution tank 2062 in a timely manner.

[0041] As a preferred embodiment, the anti-back-suction pipe 203 is provided with a floating ball 209, the inner diameter of the anti-back-suction pipe 203 is the same as the outer diameter of the floating ball 209, the height of the critical point is higher than the page height in the tail gas absorption dish 204.

[0042] In the embodiment, by providing the floating ball 209, the anti-back-suction effect can be better achieved. Specifically, under normal circumstances, the gas extracted from the dissolving box 1 by the exhaust fan 103 is continuously guided to the tail gas absorption dish 204 and continuously impacts the floating ball 209, which does not affect the normal exhaust of tail gas. When the exhaust fan 103 fails or other conditions cause negative pressure in the exhaust cylinder 2, the floating ball 209 will be sucked upward, causing the anti-back-suction pipe 203 to be blocked, thereby avoiding the back-suction condition.

[0043] As a preferred embodiment, a phenolphthalein color developing agent is further added to the sodium hydroxide solution in the tail gas absorption dish 204.

[0044] In the present application, by adding phenolphthalein color developing agent into the sodium hydroxide solution in the tail gas absorption dish 204, when the concentration of the sodium hydroxide solution in the solution tank 206 in the exhaust cylinder 2 is insufficient, the tail gas reacts with the sodium hydroxide solution in the tail gas absorption dish 204, resulting in a decrease in the concentration of sodium hydroxide, and a decrease in the color concentration of the sodium hydroxide solution in the tail gas absorption dish 204, effectively warning the staff and reminding the staff to supplement the sodium hydroxide solution in the solution tank 206 in the exhaust cylinder 2.

[0045] As a preferred embodiment, the opening end of the exhaust cylinder 2 is also connected with a connecting neck 201 with a diameter smaller than the diameter of the body of the exhaust cylinder 2, and the connecting neck 201 is inserted into the connecting groove 101.

[0046] In the present embodiment, by additionally providing a connecting neck 201 for connecting the exhaust cylinder 2 and the dissolving box 1, the sealing of the connecting joint is effectively ensured, and the direction of the exhaust cylinder 2 can be better ensured to be perpendicular to the dissolving box 1.

[0047] In the description of the present application, "connecting", "fixing" can be fixed connection, machining, welding, or mechanical connection, and the specific meaning of the above terms in the present application should be understood.

[0048] In the description of the present application, the terms "center", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, so it cannot be understood as a limitation on the present application.

[0049] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A copper standard solution waste gas absorption device, characterized in that, include: The dissolving box (1) has a connecting groove (101) on one side wall and an air inlet (102) on the other side wall; an exhaust fan (103) is provided in the connecting groove (101). The exhaust pipe (2) is placed horizontally with one end open and the other end closed; the open end of the exhaust pipe (2) is inserted into the connecting groove (101); the closed end of the exhaust pipe (2) is provided with an exhaust pipe (202), and the tail end of the exhaust pipe (202) is provided with an anti-backflow pipe (203) that is smaller at the top and larger at the bottom, and the anti-backflow pipe (203) is vertically inserted below the surface of the sodium hydroxide solution in the tail gas absorption dish (204); Several hooks (205) are provided and are arranged axially on the top wall inside the exhaust pipe (2); Solution tank (206), located on the bottom wall inside exhaust pipe (2), is used to hold sodium hydroxide solution; There are several capillary plates (207), and each hook (205) has a capillary plate (207) hanging at the bottom. The bottom of the capillary plate (207) is immersed in sodium hydroxide solution. Each capillary plate (207) has several pores (208).

2. The copper standard solution waste gas absorption device as described in claim 1, characterized in that, The outer wall of the portion of the exhaust pipe (2) inserted into the connecting groove (101) is covered with an elastic sealing layer.

3. The copper standard solution waste gas absorption device as described in claim 1, characterized in that, The exhaust pipe (2) is divided into a front half with an insertion connection groove (101) and a rear half with an exhaust pipe (202). The bottom wall of the front half of the exhaust pipe (2) is provided with a first solution tank (2061), and the bottom wall of the rear half of the exhaust pipe (2) is provided with a second solution tank (2062). The front half and the rear half of the exhaust pipe (2) are connected by threads.

4. The copper standard solution waste gas absorption device as described in claim 3, characterized in that, It also includes a first liquid filling pipe (2063) that vertically penetrates the top wall of the front half of the exhaust pipe (2), and a second liquid filling pipe (2064) that vertically penetrates the top wall of the rear half of the exhaust pipe (2). The bottoms of the first liquid filling pipe (2063) and the second liquid filling pipe (2064) extend into the first solution tank (2061) and the second solution tank (2062), respectively.

5. The copper standard solution waste gas absorption device as described in claim 4, characterized in that, It also includes a transparent observation window located on the side wall of the exhaust pipe (2).

6. The copper standard solution waste gas absorption device as described in claim 1, characterized in that, The anti-backflow tube (203) is equipped with a float (209). The height at which the inner diameter of the anti-backflow tube (203) is the same as the outer diameter of the float (209) is the critical point. The liquid level in the tail gas absorption dish (204) is higher than the critical point.

7. The copper standard solution waste gas absorption device as described in claim 1, characterized in that, The sodium hydroxide solution in the exhaust gas absorption dish (204) also contains phenolphthalein colorimetric reagent.

8. The copper standard solution waste gas absorption device as described in claim 1, characterized in that, The beginning end of the exhaust pipe (2) is also connected to a connecting neck (201) with a diameter smaller than that of the exhaust pipe (2) body, and is inserted into the connecting groove (101) through the connecting neck (201).

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