Device for adjusting back PH value of open concentrated sulfuric acid diluted solution

Abstract

The utility model discloses a device for adjusting back the PH value of a concentrated sulfuric acid open dilution solution, which comprises a sulfuric acid transfer tank, an open dilution container and a decalcification clean water tank system, the sulfuric acid transfer tank is arranged above the open dilution container, and the concentrated sulfuric acid solution is injected into one end of the open dilution container through an acid-resistant pipeline A; a water injection pipeline is further arranged at one end, close to the acid-resistant pipeline A, of the open dilution container, the open dilution container is arranged above the decalcification clean water tank system, and the other end of the open dilution container is communicated into the decalcification clean water tank system; the device can effectively cope with the problems of deformation, corrosion and the like caused by reaction heat generated when concentrated sulfuric acid is added into a solution, improves the field environment, and can be widely applied to the chemical industry; through concentrated sulfuric acid dilution operation easy to observe, the PH value of concentrated sulfuric acid is better adjusted, and later processing and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of acid production from smelting flue gas in mining and smelting industry, in particular to a device for adjusting the pH value of an exposed diluted solution of concentrated sulfuric acid. Background Art

[0002] With the rapid development of industry and the continuous expansion of urban scale, the environment we depend on for survival is suffering from more and more serious pollution. In particular, the waste gas generated by the metallurgical, chemical, mining and other industries is potentially harmful, especially hazardous chemicals such as concentrated sulfuric acid, which directly endanger the living environment of human beings. Inhalation hazard: When the concentration of sulfuric acid mist exceeds the exposure limit, you should wear an acid-proof gas mask. Eye vision hazard: You must wear chemical splash glasses when working. Skin hazard: Wear rubber gloves, acid-proof work clothes and rubber shoes when operating. Safety showers and eye wash equipment should be provided in the workplace.

[0003] Due to the characteristics of concentrated sulfuric acid, it is a moderately toxic hazardous chemical. It is highly corrosive to the skin and mucous membranes, and is also highly oxidizing. It can react violently with flammable and reducing substances, which can be harmful to the human eyes, skin, or breathing. Therefore, it is very necessary to invent a relatively safe, visible device that causes minimal damage to equipment and personnel to achieve the dilution of concentrated sulfuric acid. Utility Model Content

[0004] The purpose of the utility model is to provide a device for adjusting the pH value of an open diluted solution of concentrated sulfuric acid in view of the above situation. The device has a simple structure and design, is easy to operate, and has good practical effect.

[0005] The specific scheme of the utility model is: a device for adjusting the pH value of an open dilution solution of concentrated sulfuric acid, comprising a sulfuric acid transfer tank, an open dilution container and a decalcification clear water tank system, wherein the sulfuric acid transfer tank is arranged above the open dilution container and injects the concentrated sulfuric acid solution into one end of the open dilution container through an acid-resistant pipe A, an end of the open dilution container close to the acid-resistant pipe A is also provided with a water injection pipe, the open dilution container is arranged above the decalcification clear water tank system and the other end of the open dilution container is connected to the decalcification clear water tank system.

[0006] Furthermore, the open dilution container in the utility model has a dilution chute, one end of the dilution chute is high and the other end is low, the high end of the dilution chute is connected to the water injection pipe, the water injection pipe and the dilution chute are arranged perpendicular to each other, the low end of the dilution chute is connected to the decalcification clean water tank system, and a guide plate is provided on the internal front side wall of the dilution chute, and two guide plates are provided on the rear side wall, and the three guide plates are arranged staggered with each other.

[0007] Furthermore, the inner trough width of the dilution chute in the utility model is 300-350 mm, and the length of the guide plate is 100 mm.

[0008] Furthermore, the dilution chute described in the utility model is an open chute with a rectangular cross-section, and reinforcing ribs are arranged on the outer side wall of the dilution chute.

[0009] Furthermore, the open dilution container in the utility model is made of UPVC sheet material, and the acid-resistant pipe A is made of UPVC pipe material.

[0010] Furthermore, the decalcification clear water tank system described in the utility model includes a decalcification clear water tank, a pit is provided at the bottom of the decalcification clear water tank, and a decalcification return water pump is also provided. The decalcification return water pump extends into the pit through an acid-resistant pipe B. The decalcification return water pump transports the liquid in the pit to the pipeline network for slag slow cooling and reuse.

[0011] Furthermore, a switch flow valve is provided on the acid-resistant pipeline A in the utility model.

[0012] The use of the utility model can effectively deal with the problems of deformation, corrosion and the like caused by the reaction heat caused by adding concentrated sulfuric acid into the solution, improves the on-site environment, and can be widely used in the chemical industry; the utility model can better adjust the pH value of the concentrated sulfuric acid through the easy-to-observe concentrated sulfuric acid dilution operation, so as to facilitate the subsequent processing and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the main view of the dilution chute in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the dilution chute in the utility model in a top view;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the dilution chute in the utility model.

[0017] In the figure: 1—sulfuric acid transfer tank, 2—switch flow valve, 3—acid-resistant pipe A, 4—open dilution container, 5—water injection pipe, 6—decalcification clear water tank, 7—pit, 8—acid-resistant pipe B, 9—decalcification return water pump, 10—dilution chute, 11—reinforcement rib, 12—guide plate, 13—connection hole. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings of the utility model to clearly and completely describe the technical solution of the utility model. It is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. In the description of the utility model, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when used, which is only for the convenience of describing the utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1 to Figure 4 The utility model is a device for adjusting the pH value of an open dilution solution of concentrated sulfuric acid, comprising a sulfuric acid transfer tank 1, an open dilution container 4 and a decalcification clear water tank system. The sulfuric acid transfer tank is arranged above the open dilution container and injects the concentrated sulfuric acid solution into one end of the open dilution container through an acid-resistant pipe A3. Furthermore, a switch flow valve 2 is arranged on the acid-resistant pipe A in the utility model, and a water injection pipe 5 is also arranged on one end of the open dilution container close to the acid-resistant pipe A. The open dilution container is arranged above the decalcification clear water tank system and the other end of the open dilution container is connected to the decalcification clear water tank system.

[0021] Furthermore, the open dilution container in the utility model has a dilution chute 10, one end of the dilution chute is high and the other end is low, the high end of the dilution chute is connected to the water injection pipe, the water injection pipe and the dilution chute are arranged perpendicular to each other, and the low end of the dilution chute is connected to the decalcification clean water tank system. A guide plate 12 is provided on the inner front side wall of the dilution chute, and two guide plates are provided on the rear side wall, and the three guide plates are arranged staggered with each other.

[0022] Furthermore, the inner trough width of the dilution chute in the utility model is 300-350 mm, and the length of the guide plate is 100 mm.

[0023] Furthermore, the dilution chute described in the present invention is an open chute with a rectangular cross-section, and a reinforcing rib 11 is provided on the outer side wall of the dilution chute.

[0024] Furthermore, the open dilution container in the utility model is made of UPVC sheet material, and the acid-resistant pipe A is made of UPVC pipe material.

[0025] Furthermore, the decalcification clear water tank system described in the utility model includes a decalcification clear water tank 6, a pit 7 is provided at the bottom of the decalcification clear water tank, and a decalcification return water pump 9 is also provided. The decalcification return water pump extends into the pit through an acid-resistant pipe B, and the decalcification return water pump transports the liquid in the pit to the pipeline network for slag slow cooling and reuse.

[0026] The concentrated sulfuric acid solution in the sulfuric acid transfer tank of the utility model comes from the sulfuric acid delivery pipe.

[0027] The utility model is suitable for adjusting the pH value of concentrated sulfuric acid, and adopts an open device container as a reaction receiving container for concentrated sulfuric acid dilution solution to eliminate a large amount of reaction heat generated by the dilution of concentrated sulfuric acid, and does not carry the reaction heat to the next link. The open dilution container selects a PVC plastic chute to deal with the corrosion problem of dilute sulfuric acid. At the same time, a diversion plate for intercepting flow is also provided in the middle of the dilution chute in the open dilution container to adjust the balance of flow rate and reaction balance. The device is set in an open form, which is also conducive to observing the reaction state and adjusting the flow rate and flow rate in time.

[0028] The diluted sulfuric acid solution enters the decalcification clear water tank, and the sediment in the bottom pit is pumped away by the decalcification return water pump until the slag is slowly cooled and reused.

[0029] The use of the utility model can effectively deal with the problems of deformation, corrosion and the like caused by the reaction heat caused by adding concentrated sulfuric acid into the solution, improves the on-site environment, and can be widely used in the chemical industry; the utility model can better adjust the pH value of the concentrated sulfuric acid through the easy-to-observe concentrated sulfuric acid dilution operation, so as to facilitate the subsequent processing and use.

Claims

1. A device for adjusting the pH value of a concentrated sulfuric acid open dilution solution, characterized in that: The invention comprises a sulfuric acid transfer tank, an open dilution container and a decalcification clear water tank system. The sulfuric acid transfer tank is arranged above the open dilution container and injects concentrated sulfuric acid solution into one end of the open dilution container through an acid-resistant pipe A. An injection pipe is also arranged at one end of the open dilution container close to the acid-resistant pipe A. The open dilution container is arranged above the decalcification clear water tank system and the other end of the open dilution container is connected to the decalcification clear water tank system.

2. The device for adjusting the pH value of a concentrated sulfuric acid exposed dilution solution according to claim 1, characterized in that: The open dilution container has a dilution chute, one end of which is high and the other end is low. The high end of the dilution chute is connected to the water injection pipe, and the water injection pipe and the dilution chute are arranged perpendicular to each other. The low end of the dilution chute is connected to the decalcified clean water tank system. A guide plate is provided on the front side wall inside the dilution chute, and two guide plates are provided on the rear side wall. The three guide plates are arranged staggered with each other.

3. The device for adjusting the pH value of a concentrated sulfuric acid exposed dilution solution according to claim 2, characterized in that: The inner trough width of the dilution chute is 300-350 mm, and the length of the guide plate is 100 mm.

4. The device for adjusting the pH value of a concentrated sulfuric acid exposed dilution solution according to claim 2, characterized in that: The dilution chute is an open chute with a rectangular cross section, and reinforcing ribs are arranged on the outer side wall of the dilution chute.

5. The device for adjusting the pH value of a concentrated sulfuric acid exposed dilution solution according to claim 1, characterized in that: The open dilution container is made of UPVC sheet material, and the acid-resistant pipeline A is made of UPVC pipe material.

6. The device for adjusting the pH value of a concentrated sulfuric acid exposed dilution solution according to claim 1, characterized in that: The decalcification clear water tank system includes a decalcification clear water tank, a pit is provided at the bottom of the decalcification clear water tank, and a decalcification return water pump is provided. The decalcification return water pump extends into the pit through an acid-resistant pipe B. The decalcification return water pump transports the liquid in the pit to the pipe network for slag slow cooling and reuse.

7. The device for adjusting the pH value of a concentrated sulfuric acid exposed dilution solution according to claim 1, characterized in that: The acid-resistant pipeline A is provided with a switch flow valve.

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