Steam boiler for preparing sulfanilic acid

Abstract

The utility model discloses a steam boiler for preparing sulfanilic acid, and relates to the technical field of sulfanilic acid preparation, in particular to a steam boiler for preparing sulfanilic acid, which comprises a steam boiler main body, and a steam outlet and a gas outlet box for discharging flue gas are arranged at the top of the steam boiler main body. One end of the interior of the steam boiler body is fixedly connected with a combustion inner cylinder, a water storage cavity capable of storing water is formed between the combustion inner cylinder and the steam boiler body, a feeding port for feeding is formed in one end of the steam boiler body, and a rotatable spiral turning and feeding mechanism is installed in the combustion inner cylinder. According to the steam boiler for preparing p-aminobenzene sulfonic acid, under driving of the output shaft of the motor, the rotating frame can drive the driving plate to rotate, the driving plate can turn over fuel and push the fuel to move at the same time, so that the fuel is combusted more sufficiently, and meanwhile all parts in the combustion inner barrel are heated more uniformly.

Description

Technical Field

[0001] The utility model relates to the technical field of preparing aminobenzenesulfonic acid, in particular to a steam boiler for preparing p-aminobenzenesulfonic acid. Background Art

[0002] Both p-aminobenzenesulfonic acid and its sodium salt can be used to manufacture dyes and pesticides, generating numerous downstream products. Therefore, p-aminobenzenesulfonic acid and its sodium salt occupy a crucial position in my country's chemical synthesis. p-aminobenzenesulfonic acid is produced by reacting aniline with sulfuric acid to form a salt, followed by salt transfer. Aniline is added dropwise to concentrated sulfuric acid, and the reaction mixture is poured into cold water to produce a colorless precipitate of p-aminobenzenesulfonic acid. After cooling, the precipitate is filtered and dried to yield p-aminobenzenesulfonic acid. Sodium p-aminobenzenesulfonate is produced by reacting the resulting p-aminobenzenesulfonic acid with sodium carbonate. Therefore, the production of both p-aminobenzenesulfonic acid and sodium p-aminobenzenesulfonate requires the use of steam boilers to generate significant amounts of heat. However, when fuel is burned within a steam boiler, the accumulated fuel accumulates, leading to incomplete combustion. This incomplete combustion also produces harmful gases, which are environmentally harmful. Therefore, we have developed a steam boiler for the production of p-aminobenzenesulfonic acid. Utility Model Content

[0003] The utility model provides a steam boiler for preparing p-aminobenzenesulfonic acid, which solves the problems raised by the above background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steam boiler for preparing para-aminobenzenesulfonic acid, comprising a steam boiler main body, a steam outlet and an air outlet box for exhausting flue gas are provided on the top of the steam boiler main body, a combustion inner cylinder is fixedly connected to one end of the interior of the steam boiler main body, a water storage chamber for storing water is formed between the combustion inner cylinder and the steam boiler main body, and a feeding port for feeding is provided at one end of the steam boiler main body, a rotatable spiral feeding mechanism is installed inside the combustion inner cylinder, an end of the combustion inner cylinder away from the feeding port is fixedly connected to a vortex-shaped smoke conveying pipe extending into the water storage chamber, one end of the smoke conveying pipe extends into the air outlet box, purified liquid is stored inside the air outlet box, and one end of the smoke conveying pipe is fixedly connected to an outlet duct that is ultimately below the liquid level of the purified liquid for conveying flue gas.

[0005] Optionally, the combustion inner cylinder includes an upper end and a lower end, the upper end is in a continuous corrugated shape, the lower end is semicircular, and a waste slag groove connected to the steam boiler body is provided at the bottom of the lower end near one end of the smoke conveying pipe.

[0006] Optionally, an ash collecting frame capable of extracting dust from the steam boiler body is movably connected to the steam boiler body, and the ash collecting frame is movably connected to the bottom of the waste slag channel and communicates with the interior of the combustion inner cylinder.

[0007] Optionally, the spiral feeding mechanism includes a rotating frame and a driving plate, one end of the rotating frame is movably mounted on the inner wall of the combustion inner cylinder, and a plurality of driving plates are fixedly connected to the rotating frame. The driving plates are arranged in a spiral shape, and the driving plates can contact the lower end portion.

[0008] Optionally, a motor is fixedly connected to the outer side of the steam boiler body, and the output shaft of the motor can be fixed to one end of the rotating frame.

[0009] Optionally, a burner is fixedly connected to the inner wall of the combustion inner cylinder near the feeding port.

[0010] Optionally, the outlet duct is divided into two parts, an inverted U-shaped part and a vortex part. The top of the inverted U-shaped part extends out of the purified liquid surface, both ends of the inverted U-shaped part are below the purified liquid surface, and one end of the inverted U-shaped part is connected to the smoke conveying pipe, and the vortex part is connected to the other end of the inverted U-shaped part, and multiple air outlets are opened at the top of the vortex part, and an activated carbon filter plate is fixedly installed on the air outlet box.

[0011] The utility model has the following beneficial effects:

[0012] 1. The steam boiler for preparing p-aminobenzenesulfonic acid is driven by the motor output shaft to enable the rotating frame to drive the driving plate to rotate. The driving plate can flip the fuel and push the fuel to move, thereby making the fuel burn more fully and making the heating of various parts inside the combustion inner cylinder more uniform, thereby achieving a better heating effect.

[0013] 2. The steam boiler for preparing p-aminobenzenesulfonic acid can increase the contact area between the combustion inner cylinder and the moisture inside the water storage chamber by arranging the combustion inner cylinder inside the steam boiler body. The design of the upper end structure can further increase its contact area with the moisture. At the same time, under the structure of the smoke conveying pipe, the heat entrained in the smoke can be reused, thereby making fuller use of the heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 3 It is a schematic structural diagram of the utility model from the right side;

[0017] Figure 4 This is a schematic diagram of the structure of the smoke delivery pipe connection of the utility model;

[0018] Figure 5 This is a schematic structural diagram of point A of the present utility model.

[0019] In the figure: 1. Steam boiler body; 2. Air outlet box; 3. Ash collection frame; 4. Inner combustion cylinder; 5. Water storage chamber; 6. Rotating frame; 7. Drive plate; 8. Smoke pipe; 9. Burner; 10. Feeding port; 11. Motor; 12. Upper end; 13. Lower end; 14. Outlet pipe; 15. Activated carbon filter plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 5 , a steam boiler for preparing p-aminobenzenesulfonic acid includes a steam boiler body 1, a steam outlet and an air outlet box 2 for exhausting smoke are provided on the top of the steam boiler body 1, a combustion inner cylinder 4 is fixedly connected to one end of the steam boiler body 1, and a water storage chamber 5 for storing water is formed between the combustion inner cylinder 4 and the steam boiler body 1, and the combustion inner cylinder 4 is arranged inside the steam boiler body 1, so that the contact area between the water and the heating source can be increased, thereby making the heating effect better, and a feeding port 10 for feeding is provided at one end of the steam boiler body 1, and a rotatable spiral turning feeding mechanism is installed inside the combustion inner cylinder 4, so that the fuel added from the feeding port 10 can be transported while being turned over, and the fuel can be turned over to avoid incomplete combustion caused by the accumulation of fuel and to make the fuel move, The heating inside the combustion inner tube 4 is relatively uniform, and the end of the combustion inner tube 4 away from the feeding port 10 is fixedly connected to a vortex-shaped smoke conveying pipe 8 extending into the water storage chamber 5, so that the heat entrained in the smoke can be reused when the smoke passes through the smoke conveying pipe 8, and the contact area with moisture can be increased under the action of the vortex-shaped structure of the smoke conveying pipe 8, so that the heat in the smoke can be fully utilized, and one end of the smoke conveying pipe 8 extends into the air outlet box 2, and the air outlet box 2 stores purified liquid inside. One end of the smoke conveying pipe 8 is fixedly connected to an outlet pipe 14 that is finally below the liquid level of the purified liquid for conveying the smoke, so that when the smoke passes through the air outlet box 2, it needs to pass through the purified liquid before it can be discharged, thereby purifying the smoke.

[0022] See also Figures 1 to 4The combustion inner tube 4 includes an upper end portion 12 and a lower end portion 13. The upper end portion 12 is in a continuous corrugated shape. The design of the structure of the upper end portion 12 can further increase its contact area with moisture, thereby making it have a better heating effect on moisture. The lower end portion 13 is semicircular, and a waste slag groove connected to the steam boiler body 1 is opened at the bottom of the lower end portion 13 near one end of the smoke conveying pipe 8, and the ash after the fuel is burned can fall into the waste slag groove.

[0023] See also Figures 1 to 4 The steam boiler body 1 is movably connected to an ash collecting frame 3 that can extract the dust inside the steam boiler body 1, and the ash collecting frame 3 is movably connected to the bottom of the waste slag groove and is connected to the interior of the combustion inner tube 4. The fuel ash falling through the waste slag groove can fall into the ash collecting frame 3, which facilitates the collection and cleaning of the ash.

[0024] See also Figures 1 to 3 The spiral feeding mechanism includes a rotating frame 6 and a driving plate 7. One end of the rotating frame 6 and the combustion inner cylinder 4 are movably mounted on the inner wall of the combustion inner cylinder 4. The rotating frame 6 can be rotated at a fixed position on the combustion inner cylinder 4. A plurality of driving plates 7 are fixedly connected to the rotating frame 6. Driven by the rotating frame 6, the driving plate 7 can rotate, and under the action of the rotation of the driving plate 7, an airflow blowing toward the smoke conveying pipe 8 can be formed, so that the smoke can flow smoothly into the smoke conveying pipe 8. The driving plates 7 are arranged in a spiral shape, and the driving plates 7 can contact the lower end portion 13.

[0025] See also Figures 1 to 4 A motor 11 is fixedly connected to the outside of the steam boiler body 1. The output shaft of the motor 11 can be fixed to one end of the rotating frame 6. Driven by the output shaft of the motor 11, the rotating frame 6 can rotate. The motor 11 is a prior art and will not be described in detail here.

[0026] See also Figures 1 to 4 A burner 9 is fixedly connected to the inner wall of the combustion inner tube 4 near the feeding port 10. Under the action of the burner 9, the fuel can be ignited.

[0027] See also Figures 1 to 5The outlet duct 14 is divided into an inverted U-shaped part and a vortex part. The top of the inverted U-shaped part extends out of the purified liquid level, and both ends of the inverted U-shaped part are below the purified liquid level. One end of the inverted U-shaped part is connected to the smoke conveying pipe 8, so that the purified liquid will not enter the smoke conveying pipe 8. The vortex part is connected to the other end of the inverted U-shaped part, and a plurality of air outlets are opened on the top of the vortex part. An activated carbon filter plate 15 is fixedly installed on the air outlet box 2. Under the action of the vortex structure of the smoke conveying pipe 8, the smoke flowing into the air outlet box 2 can be discharged relatively evenly at different air outlets, so that the smoke purification is more sufficient, and under the action of the activated carbon filter plate 15, the smoke can finally be filtered.

[0028] In summary, when the steam boiler for preparing p-aminobenzenesulfonic acid is used, the fuel is placed inside the combustion inner tube 4 through the feeding port 10, and then the fuel is ignited under the action of the burner 9, and the rotating frame 6 is driven by the output shaft of the motor 11 to rotate, and the driving plate 7 is driven by the rotating frame 6 to rotate, and the driving plate 7 is rotated to turn the fuel to avoid the accumulation of the fuel, which leads to its incomplete combustion, and under the rotation of the driving plate 7, the fuel can be burned while gradually moving toward the ash collector. Frame 3 moves, and the ash produced by the combustion of the fuel is finally pushed into the ash collecting frame 3. The heat conduction of the combustion inner tube 4 can heat the water in the water storage chamber 5, and the flue gas burned in the combustion inner tube 4 can enter the smoke conveying pipe 8, and the heat contained in the flue gas can be transferred to the water in the water storage chamber 5 through the smoke conveying pipe 8. Then the flue gas enters the outlet conduit 14 and is discharged through the air outlet of the vortex part of the outlet conduit 14, so that the flue gas can pass through the purification liquid, thereby purifying the flue gas, and then be discharged through the activated carbon filter plate 15.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Furthermore, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steam boiler for preparing p-aminobenzenesulfonic acid, comprising a steam boiler body (1), the top of which is provided with a steam outlet and an air outlet box (2) for exhausting flue gas, and characterized in that: One end of the steam boiler body (1) is fixedly connected to a combustion inner cylinder (4), and a water storage chamber (5) for storing water is formed between the combustion inner cylinder (4) and the steam boiler body (1), and a feeding port (10) for feeding is opened at one end of the steam boiler body (1). A rotatable spiral feeding mechanism is installed inside the combustion inner cylinder (4), and the end of the combustion inner cylinder (4) away from the feeding port (10) is fixedly connected to a vortex-shaped smoke conveying pipe (8) extending into the water storage chamber (5), and one end of the smoke conveying pipe (8) extends into the air outlet box (2), and the air outlet box (2) stores purified liquid inside. One end of the smoke conveying pipe (8) is fixedly connected to an outlet pipe (14) for conveying smoke that is finally below the level of the purified liquid.

2. The steam boiler for preparing sulfanilic acid according to claim 1, wherein: The combustion inner cylinder (4) includes an upper end portion (12) and a lower end portion (13), wherein the upper end portion (12) is in a continuous corrugated shape and the lower end portion (13) is in a semicircular shape. A waste slag groove connected to the steam boiler body (1) is provided at the bottom of the lower end portion (13) near one end of the smoke conveying pipe (8).

3. The steam boiler for preparing sulfanilic acid according to claim 2, characterized in that: An ash collecting frame (3) capable of extracting dust from the steam boiler body (1) is movably connected to the steam boiler body (1), and the ash collecting frame (3) is movably connected to the bottom of the waste slag channel and communicates with the interior of the combustion inner cylinder (4).

4. The steam boiler for preparing sulfanilic acid according to claim 1, wherein: The spiral feeding mechanism comprises a rotating frame (6) and a driving plate (7), one end of the rotating frame (6) and the combustion inner cylinder (4) are movably sleeved on the inner wall of the combustion inner cylinder (4), and a plurality of driving plates (7) are fixedly connected to the rotating frame (6), the driving plates (7) are arranged in a spiral shape, and the driving plates (7) can contact the lower end portion (13).

5. The steam boiler for preparing sulfanilic acid according to claim 4, characterized in that: A motor (11) is fixedly connected to the outside of the steam boiler body (1), and an output shaft of the motor (11) can be fixed to one end of the rotating frame (6).

6. The steam boiler for preparing sulfanilic acid according to claim 1, characterized in that: A burner (9) is fixedly connected to the inner wall of the combustion inner cylinder (4) at one end close to the feeding port (10).

7. The steam boiler for preparing sulfanilic acid according to claim 3, characterized in that: The outlet conduit (14) is divided into two parts, an inverted U-shaped part and a vortex part. The top of the inverted U-shaped part extends out of the purified liquid surface, and both ends of the inverted U-shaped part are below the purified liquid surface. One end of the inverted U-shaped part is connected to the smoke conveying pipe (8), and the vortex part is connected to the other end of the inverted U-shaped part. A plurality of air outlets are opened at the top of the vortex part, and an activated carbon filter plate (15) is fixedly installed on the air outlet box (2).

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