Chemical raw material distillation device

Abstract

The utility model discloses a chemical raw material distillation device, which belongs to the technical field of chemical production, and comprises a distillation kettle body and a stirring assembly, the stirring assembly comprises a stirring rod controlled by a motor and a defoaming mechanism arranged on the stirring rod, the defoaming mechanism comprises a stirring frame and a plurality of defoaming plates arranged on the stirring frame at intervals, and the defoaming plates are arranged on the stirring frame. The stirring rod is arranged in the middle of the distillation kettle body, the defoaming mechanism is arranged on the stirring rod, the defoaming plate is in the shape of a bent plate which is bent at a right angle, and a plurality of defoaming bulges are arranged on the defoaming plate. The stirring rod is driven by the motor to drive the defoaming mechanism to perform defoaming operation in the heating distillation process of the distillation kettle body; the defoaming protrusions of the defoaming plate are used for making contact with a mixed solution flowing into the flow channel due to limitation, boiling bubbles and a film structure of the bubbles are destroyed, and therefore the defoaming effect is achieved.

Description

Technical Field

[0001] The utility model discloses a chemical production technology, in particular to a chemical raw material distillation device. Background Art

[0002] A distillation machine is a machine that utilizes the difference in volatility of each component in a liquid mixture to partially vaporize the liquid mixture and then condense the steam, thereby separating the components it contains. It is a unit operation belonging to mass transfer separation. It is widely used in oil refining, chemical industry, light industry and other fields.

[0003] Take the separation of a two-component mixed liquid as an example. The feed liquid is heated to partially vaporize it, the volatile component is concentrated in the vapor, and the non-volatile component is also concentrated in the remaining liquid, which achieves the separation of the two components to a certain extent. The greater the difference in the volatility of the two components, the greater the above-mentioned degree of concentration. In industrial distillation equipment, the partially vaporized liquid phase is directly contacted with the partially condensed gas phase to carry out gas-liquid phase mass transfer. As a result, the non-volatile component in the gas phase is partially transferred to the liquid phase, and the volatile component in the liquid phase is partially transferred to the gas phase, that is, partial vaporization of the liquid phase and partial condensation of the gas phase are achieved simultaneously.

[0004] The distillation machine adopts direct heating and indirect heating. Steam heating in the indirect heating method is particularly common in chemical production, especially saturated water vapor heating. However, when saturated water vapor is heated and distilled, when the saturated water vapor is in contact with the mixed liquid for heating, boiling bubbles and foams are easily generated in the mixed liquid. Boiling bubbles and foams will affect the heating contact area between the saturated water vapor and the mixed solution, and reduce the heating distillation efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a chemical raw material distillation device in order to solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chemical raw material distillation device, comprising a distillation kettle body and a stirring assembly, the stirring assembly comprising a stirring rod controlled by a motor and a defoaming mechanism installed on the stirring rod, the defoaming mechanism comprising a stirring frame and a plurality of defoaming plates arranged at intervals on the stirring frame, the defoaming plate being in the shape of a bent plate bent at a right angle, and a plurality of defoaming protrusions are provided on the defoaming plate.

[0007] By adopting the above technical solution, the defoaming protrusions on the defoaming plates arranged at intervals are used to make the mixed solution contact with the defoaming protrusions during the rotation process, thereby destroying the membrane structure of the boiling bubbles and foam.

[0008] Preferably, the adjacent defoaming plates arranged at intervals are staggered, and flow channels for accommodating liquid passing therethrough are formed between the adjacent defoaming plates, and the defoaming protrusions on the defoaming plates are located on both side end surfaces close to the flow channels.

[0009] By adopting the above technical solution, the mixed solution is restricted from flowing toward the defoaming protrusions on the end surfaces of both sides of the defoaming plates through the flow channels formed by the staggered arrangement of adjacent defoaming plates.

[0010] Preferably, the distillation kettle body is bucket-shaped, wide at the top and narrow at the bottom, and the stirring frame and the defoaming plate are located at the wide upper part of the distillation kettle body.

[0011] By adopting the above technical solution, the height difference between the liquid levels of the mixed solution at the upper end and the lower end is reduced, thereby preventing the mixed solution at the lower end from overheating.

[0012] Preferably, the defoaming mechanism further comprises a stirring blade mounted on the stirring rod, the stirring blade is streamlined in shape, and is located at a narrow portion of the lower portion of the distillation kettle body.

[0013] By adopting the above technical solution, the stirring knife can reduce the short-term local temperature difference between the mixed solution at the upper part and the lower part of the distillation kettle body.

[0014] Preferably, at least four groups of stirring frames are provided and are arranged at equal intervals.

[0015] By adopting the above technical solution, the coverage uniformity of the defoaming mechanism is improved.

[0016] Preferably, the stirring blade gradually narrows from top to bottom along the length direction of the stirring rod.

[0017] By adopting the above technical solution, interference between the stirring knife and the distillation kettle body during stirring can be prevented.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model drives the defoaming mechanism to perform the defoaming operation during the heating and distillation process of the distillation kettle body by driving the stirring rod with a motor, and makes use of the defoaming protrusion of the defoaming plate to contact the mixed solution that flows into the flow channel due to restriction, thereby destroying the membrane structure of boiling bubbles and foams, thereby achieving the defoaming effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a chemical raw material distillation device;

[0021] Figure 2 It is a partial cross-sectional view of a chemical raw material distillation device;

[0022] Figure 3 is a schematic diagram of the structure of the stirring assembly;

[0023] Figure 4 It is a schematic diagram of the structure of the stirring frame and the defoaming plate;

[0024] Figure 5 It is a schematic diagram of the structure of the defoaming board.

[0025] Figure numerals: 1. distillation kettle body; 2. stirring assembly; 3. stirring rod; 4. stirring frame; 5. defoaming plate; 6. stirring knife; 7. flow channel; 8. defoaming protrusion. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. Obviously, 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 are within the scope of protection of the utility model.

[0027] A chemical raw material distillation device, such as Figure 1-Figure 5 As shown, it includes a distillation kettle body 1 and a stirring assembly 2, the stirring assembly 2 includes a stirring rod 3 controlled by a motor and a defoaming mechanism installed on the stirring rod 3, the defoaming mechanism includes a stirring frame 4 and a plurality of defoaming plates 5 arranged at intervals on the stirring frame 4, the defoaming plate 5 is in the shape of a bent plate with a right angle bend, and a plurality of defoaming protrusions 8 are provided on the defoaming plate 5.

[0028] The distillation kettle body 1 is bucket-shaped with a wide top and a narrow bottom. The defoaming mechanism also includes a stirring blade 6 installed on the stirring rod 3. The stirring blade 6 is streamlined and located at the narrow part of the lower part of the distillation kettle body 1. The saturated water vapor generally contacts the liquid surface of the mixed solution first, increasing the liquid level difference of the mixed solution at the upper and lower ends, and then stirring the mixed solution at the bottom through the stirring blade 6, thereby reducing the short-term local temperature difference of the mixed solution at the upper and lower parts of the distillation kettle body 1, and preventing the boiling phenomenon caused by local overheating of the mixed solution; the stirring blade 6 gradually narrows from top to bottom along the length direction of the stirring rod 3 to adapt to the bucket-shaped shape of the distillation kettle body 1 with a wide top and a narrow bottom, so as to prevent interference during stirring;

[0029] Foam is generally generated on the liquid surface of the mixed solution or on the upper part of the mixed solution. The stirring frame 4 and the defoaming plate 5 are arranged at the upper wide part of the distillation kettle body 1, which can achieve a better defoaming effect. At least 4 groups of stirring frames 4 are provided, and they are arranged at equal intervals. The 4 groups of stirring frames 4 can better cover the liquid surface of the mixed solution and the upper part of the mixed solution.

[0030] The adjacent defoaming plates 5 are arranged in a staggered manner, and a flow channel 7 for accommodating the passage of liquid is formed between the adjacent defoaming plates 5. The defoaming protrusions 8 on the defoaming plates 5 are located on both side end surfaces close to the flow channel 7. When the stirring rod 3 performs stirring and defoaming:

[0031] The motor drives the stirring rod 3 to rotate, driving the stirring frame 4 and the stirring blade 6 of the defoaming mechanism to rotate. During the rotation, at the lower part of the distillation kettle body 1, the stirring blade 6 stirs the mixed solution at the bottom upward to mix the mixed solution at the upper and lower ends, thereby preventing the mixed solution from being locally overheated.

[0032] At the upper part of the distillation kettle body 1, the stirring frame 4 drives the defoaming plate 5 to rotate. When the mixed solution flows through the stirring frame 4, due to the obstruction of the defoaming plate 5, it converges into the flow channel 7 formed between adjacent defoaming plates 5. After the mixed solution contacts the defoaming protrusions 8 on the two side end surfaces close to the flow channel 7, it is squeezed and forced to cause the foam film layer to rupture and dissipate.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A chemical raw material distillation device, characterized in that: The invention comprises a distillation kettle body (1) and a stirring assembly (2), wherein the stirring assembly (2) comprises a stirring rod (3) controlled by a motor and a defoaming mechanism installed on the stirring rod (3), wherein the defoaming mechanism comprises a stirring frame (4) and a plurality of defoaming plates (5) arranged at intervals on the stirring frame (4), wherein the defoaming plates (5) are in the shape of right-angle bent plates, and the defoaming plates (5) are provided with a plurality of defoaming protrusions (8).

2. A chemical raw material distillation device according to claim 1, characterized in that: The adjacent defoaming plates (5) are arranged in a staggered manner, and a flow channel (7) for accommodating the passage of liquid is formed between the adjacent defoaming plates (5). The defoaming protrusions (8) on the defoaming plates (5) are located on both side end surfaces close to the flow channel (7).

3. A chemical raw material distillation device according to claim 2, characterized in that: The distillation kettle body (1) is in the shape of a bucket that is wide at the top and narrow at the bottom, and the stirring frame (4) and the defoaming plate (5) are located at the wide upper part of the distillation kettle body (1).

4. A chemical raw material distillation device according to claim 3, characterized in that: The defoaming mechanism also includes a stirring blade (6) installed on the stirring rod (3). The stirring blade (6) is streamlined in shape and is located at a narrow part of the lower part of the distillation kettle body (1).

5. A chemical raw material distillation device according to claim 4, characterized in that: The stirring frames (4) are provided in at least four groups and are arranged at equal intervals.

6. A chemical raw material distillation device according to claim 4, characterized in that: The stirring blade (6) gradually narrows from top to bottom along the length direction of the stirring rod (3).

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