Glass-lined evaporation and concentration kettle

Abstract

The utility model relates to a glass-lined evaporation and concentration kettle which is a two-section glass-lined stirring kettle with an evaporation chamber and a heating chamber separated, and a kettle cover can be opened or closed. A main body comprises a kettle cover, an evaporation chamber barrel body, a connecting seal head, a heating chamber and the like, wherein the diameter of the heating chamber is smaller than that of the evaporation chamber barrel body; double layers of paddles are arranged in the kettle for stirring, one layer of anchor type or frame type paddles are arranged in a heating chamber, and one layer of paddle type paddles are arranged in a connecting seal head; a spiral guide plate is arranged in the jacket, and supporting legs transited by a notch plate are welded on the barrel body of the evaporation chamber without the jacket. The kettle is suitable for evaporation and concentration of special materials with strong acidity and certain viscosity, such as sublimated organic dispersion liquid which is easy to dry and deteriorate, and the like.

Description

Technical Field

[0001] The utility model relates to the field of glass-lined equipment, in particular to a glass-lined evaporation and concentration kettle. Background Art

[0002] Glass-lined kettle is made of high silicon porcelain glaze which is calcined at about 900℃ to make the porcelain glaze adhere to the metal surface. It can resist corrosion from most inorganic acids, organic acids, organic solvents and other media, especially has excellent corrosion resistance in hydrochloric acid, nitric acid, aqua regia and other media. Glass-lined kettle is also suitable for occasions that require no hanging materials, smooth and clean materials. Glass-lined kettle has national standards, open type and closed type are GB / T25027-2010 and GB / T25026-2010 respectively. Glass-lined kettle is a straight barrel-shaped tank-shaped equipment. The barrel body is equipped with a jacket that almost reaches the top and can be heated by heat sources such as steam. The jacket is equipped with standard legs outside for supporting the equipment, and is equipped with a standard stirring paddle. The kettle cover is equipped with multiple interfaces and seals. It can handle various liquid working materials and has a wide range of uses. It can be used as a standard kettle for various purposes. When used as an evaporation and concentration kettle, evaporation and heating are carried out in the same room. The heat source is to transfer heat to the liquid material through the jacket, and the solvent in the material vaporizes and evaporates in the space on the other side of the jacket. During evaporation, the temperature of the kettle wall (the other side of the jacket) is always higher than the evaporation temperature of the material, so as to maintain the heat transfer to the material. During evaporation, the material in the kettle is not static. There will be a little sticky material on the wall at the intersection of the vapor and liquid surface in the kettle and on the wall above. When the stirring is strong, the sticky material will be a little more. This phenomenon will not have a bad effect on the concentration of most materials. However, when evaporation and concentration are to be processed, the sticky material will sublimate or dry because the temperature is higher than the center, causing material loss and deterioration, and producing adverse thermal effects. For example, when the drug intermediate purine chloride extract is evaporated and concentrated using a standard glass-lined kettle, the rear pipeline will be blocked due to sublimation crystallization. When the optoelectronic material polythiophene aqueous dispersion is evaporated and concentrated using a standard glass-lined kettle, 15-20% of the components will be lost due to gelling and drying. Therefore, it is necessary to make improvements when using glass-lined reactors to evaporate and concentrate special materials. Summary of the invention

[0003] In view of the shortcomings of the existing technology, the utility model provides a glass-lined evaporation and concentration kettle, which can effectively solve the problems of material sticking and adverse thermal effects during evaporation and concentration. The idea of ​​solving the problem is to separate evaporation and heating, and the evaporation chamber has no jacket. During evaporation, the temperature of the evaporation chamber wall will not be higher than the center temperature of the liquid. The evaporating steam will condense when it meets the relatively cold kettle cover, and a small amount of condensate will flow down. Because the evaporation chamber has no jacket heating, the downstream liquid will not evaporate. When it flows to the intersection of the kettle steam and liquid, it will wash the wall material, reduce the wall material, and greatly reduce the occurrence of adverse thermal effects.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a glass-lined evaporation and concentration kettle, including a power motor including a frame reducer, a stirring seal, and various components of a standard glass-lined reactor, including an evaporation chamber, the evaporation chamber including an evaporation chamber barrel and a connecting head integrated therewith; the connecting head is connected to a heating chamber with a smaller diameter than the evaporation chamber barrel, the heating chamber including a heating chamber barrel and a jacket welded thereon, the heating chamber barrel has a discharge port below, the jacket includes an upper jacket interface and a lower jacket interface; the heating chamber and the connecting head are connected by a lower clip; the evaporation chamber barrel is connected to a kettle cover, the kettle cover includes a stirring hole in the center and multiple functional interfaces off-center; the outer side of the evaporation chamber barrel is connected to 3-4 legs. Here, the heating chamber can also be directly applied to the standard glass-lined reactor tank body without the standard legs.

[0005] Furthermore, a stirring paddle is installed in the stirring hole, and the stirring paddle includes an upper stirring blade and a lower stirring blade. The upper stirring blade is arranged in or near the connecting head space, and the lower stirring blade is arranged in the barrel space of the heating chamber.

[0006] Furthermore, the upper stirring blade is a paddle-type blade, and the upper stirring blade is arranged in or near the connecting head space; the lower stirring blade is an anchor-type blade or a frame-type blade, and the lower stirring blade is arranged at the bottom of the heating chamber.

[0007] After the heating chamber and evaporation chamber are separated and of different sizes, it is not suitable to install standard glass-lined stirring. The utility model designs long-axis upper and lower double-paddle stirring. Specifically, the lower stirring paddle is set at the bottom of the heating chamber, and the low-viscosity material adopts the glass-lined anchor paddle, and the high-viscosity material adopts the glass-lined frame paddle. This design can effectively enhance the heat transfer of the heating chamber; the upper stirring paddle is set in the middle of the middle head of the evaporation chamber, and adopts glass-lined paddle stirring. This design can disperse and eliminate rising bubbles and keep the material uniform. After the double paddles are used, the heat transfer of the material is good, the evaporation is stable, and the poor concentration thermal effect is less.

[0008] Furthermore, the evaporation chamber barrel body and the kettle cover are connected through an upper clip, which is called an open kettle, and the kettle cover can be applied with a standard glass-lined reactor kettle cover.

[0009] Furthermore, the connection between the evaporation chamber barrel and the kettle cover is an enameled integrated welding connection, which is called a closed kettle.

[0010] Furthermore, the connecting head is an elliptical head with a folded edge and an arc transition.

[0011] Furthermore, the connecting head is a conical head with a folded edge and an arc transition.

[0012] Furthermore, spiral guide plates are arranged in the barrel body and the jacket of the heating chamber.

[0013] Although the heating chamber can partially apply the standard glass-lined reactor body, after the heating chamber and the evaporation chamber are separated, the heat transfer jacket is smaller than that of the standard glass-lined reactor. In order to compensate for the defect of reduced heat transfer area, the utility model adds a spiral guide plate in the heating chamber jacket, which can achieve a similar heating effect by enhancing heat transfer.

[0014] Furthermore, the support legs connected to the outer side of the evaporation chamber barrel body are structured as follows: a certain number of rectangular notched plates with notches on one side are pre-welded on the support leg positions on the evaporation chamber barrel body before enameling, and the number of notches on each notched plate is 2-6. After the evaporation chamber barrel body with the notched plates welded is enameled, the support legs are welded on the other side of the notched plates; the number of notched plates corresponding to each support leg is 2-4, and each support leg is matched with the corresponding number of notched plates; the notched edge of the notched plate is welded to the inner notched support leg on the evaporation chamber barrel body, or the flat edge of the notched plate is welded to the outer notched support leg on the evaporation chamber barrel body.

[0015] All equipment needs to be equipped with legs. The legs of the standard glass-lined kettle are welded to the jacket after enameling. The most convenient position for the legs of the glass-lined evaporation and concentration kettle of the present invention is to be arranged on the barrel wall of the evaporation chamber. At this time, there must be a glass-lined layer on the other side of the legs. In this case, whether the legs are welded before enameling or after enameling, there may be a risk of porcelain explosion during enameling, porcelain explosion during welding, or porcelain explosion during use. For this reason, the utility model designs a solution, using a "notch plate" with multiple notches to be pre-welded at the position of the evaporation chamber to install the legs before enameling, and then connecting the legs after enameling. There are two pre-welding forms of the notch plate, one of which has its notch surface pre-welded on the evaporation chamber wall, which is suitable for thin-walled evaporation chamber equipment, and the other side of the notch plate pre-welded on the evaporation chamber wall, which is suitable for thick-walled evaporation chamber equipment. The method of pre-welding the notch plate can conveniently solve the reliability problem of mechanical manufacturing and use of glass-lined equipment.

[0016] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0017] 1. The glass-lined evaporation and concentration kettle separates the evaporation chamber and the heating chamber. The evaporation chamber has no jacket. During evaporation, the temperature of the evaporation chamber wall will not be higher than the center temperature of the liquid. The evaporating steam will condense when it meets the relatively cold kettle cover, and a small amount of condensate will flow down. Because the evaporation chamber has no jacket heating, the downstream liquid will not evaporate. When it flows to the intersection of the kettle steam and liquid, it will wash the wall material, reduce the wall material, and greatly reduce the occurrence of adverse thermal effects. In addition, when the diameter of the evaporation chamber is larger than that of the heating chamber, the liquid surface will be more stable during evaporation, and the wall material will be less.

[0018] 2. The glass-lined evaporation and concentration kettle is equipped with a spiral guide plate in the heating chamber jacket to enhance the heat transfer effect.

[0019] 3. The glass-lined evaporation and concentration kettle concentrates increasingly concentrated materials into a smaller heating chamber and stirs them in a small space, which effectively enhances the heat transfer of the materials and improves the concentration ratio of the materials. It is also suitable for occasions where the final concentration ratio is high or even required to be concentrated into sand.

[0020] 4. The glass-lined evaporation and concentration kettle provides a method of pre-welding the notched plate, which can conveniently solve the problem of glass-lined porcelain explosion and improve the reliability of enameling and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the support foot component of the utility model.

[0023] In the figure: 100 evaporation chamber, 110 evaporation chamber barrel, 120 connection head, 130 upper clamp, 200 heating chamber, 210 heating chamber barrel, 211 discharge port, 220 jacket, 221 jacket upper interface, 222 jacket lower interface, 230 lower clamp, 240 spiral guide plate, 300 kettle cover, 310 stirring hole, 320 functional interface, 400 stirring paddle, 410 upper stirring paddle, 420 lower stirring paddle, 500 stirring seal, 600 power motor, 700 support foot, 710 inner notch support foot, 720 outer notch support foot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the utility model, and not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 In the present embodiment, a glass-lined evaporation and concentration kettle can be divided into a kettle cover 300, an evaporation chamber 100 and a heating chamber 200 as part A. In the figure, the kettle cover 300 has a clip on the left, indicating an open form with a clip 130 installed, and the right side has no clip, indicating a closed form without a clip installed; the stirring 400, the stirring seal 500 and the power motor 600 are part B, wherein the stirring seal 500 and the power motor 600 can be standard parts. In the figure, the lower stirring blade 420 of the stirring paddle 400 is represented by a frame stirring blade on the left and an anchor blade on the right.

[0026] Embodiment 1, a glass-lined evaporation and concentration kettle, part A comprises an evaporation chamber 100, the evaporation chamber 100 comprises an evaporation chamber barrel 110 and a connecting head 120 integrated therewith, the connecting head 120 adopts an elliptical head with an arc transition at the folded mouth; the connecting head 120 is connected to a heating chamber 200 (with a smaller diameter than the evaporation chamber barrel 110), the heating chamber 200 comprises a heating chamber barrel 210 and a jacket 220 welded thereon, the heating chamber barrel 210 has a discharge port 211 at the bottom, the jacket 220 comprises a jacket upper interface 221 and a jacket The lower interface 222 is set, the spiral guide plate 240 is set in the heating chamber barrel body 210 and the jacket 220, the heating chamber 200 and the connecting head 120 are connected by the lower clamp 230, the evaporation chamber barrel body 110 is connected to the kettle cover 300 and connected by the upper clamp 130; the kettle cover 300 includes a stirring hole 310 (in the center) and multiple functional interfaces 320 (off-center); the upper outer side of the evaporation chamber barrel body 110 is connected to 4 legs 700, each leg has 3 legs, and the legs use 3-notch outer notch legs 710. The main features of part A are the open kettle cover 300, the elliptical connecting head 120, and the jacket 220 with spiral guide plates 240.

[0027] Part B is a stirring paddle 400 which is longer than a standard paddle and is installed in the stirring hole 310 and matched with Part A. The stirring paddle 400 includes an upper stirring blade 410 and a lower stirring blade 420. The upper stirring blade 410 is a paddle-type blade, which is arranged at the junction of the connection head 120 and the evaporation chamber barrel 110, and the lower stirring blade 420 is a frame-type blade arranged at the bottom of the heating chamber 210. The stirring paddle 400 shaft passes through the stirring hole 310 and then wears the stirring seal 500, which is installed on the stirring hole 310; the stirring paddle 400 is connected to a power motor 600 including a frame reducer, etc. after passing through the stirring seal 500. The main feature of Part B is the frame-type stirring blade, and the shaft of the stirring paddle is required to be thick.

[0028] The first embodiment is suitable for large-scale evaporation or evaporation and concentration of high-viscosity liquid.

[0029] Embodiment 2: A glass-lined evaporation and concentration kettle, wherein part A comprises an evaporation chamber 100, the evaporation chamber 100 comprises an evaporation chamber barrel 110 and a connecting head 120 integral therewith, the connecting head 120 adopts a conical head with an arc transition at the folded mouth, the connecting head 120 is connected to a heating chamber 200 (with a smaller diameter than the evaporation chamber barrel 110), the heating chamber 200 comprises a heating chamber barrel 210 and a welded jacket 220, the heating chamber barrel 210 has a discharge port 211 at the bottom, and the jacket 220 comprises an upper jacket interface 221 and a lower jacket interface 222, the heating chamber 200 and the connection head 120 are connected by the lower clip 230, the evaporation chamber barrel 110 and the kettle cover 300 are connected by enameling integrated welding, the kettle cover 300 includes a stirring hole 310 (in the center) and multiple functional interfaces 320 (off-center), the functional interface 320 includes a feed interface, a thermometer interface, an exhaust interface, an observation interface, and a hand interface; the outer side of the evaporation chamber barrel 110 is connected to 4 legs 700, each leg has 2 legs, and the legs use 3-notch inner notch legs 710. The main features of part A are the closed kettle cover 300, the conical connection head 120, the ordinary jacket 220, the simple structure and the comprehensive use of less materials.

[0030] Part B is a stirring paddle 400 which is longer than a standard paddle and is installed in the stirring hole 310 and matched with Part A. The stirring paddle 400 includes an upper stirring blade 410 and a lower stirring blade 420. The upper stirring blade 410 is a paddle-type blade and is arranged in the space of the connection head 120. The lower stirring blade 420 is an anchor-type blade and is arranged at the bottom of the heating chamber 210. The stirring paddle 400 shaft passes through the stirring hole 310 and then wears the stirring seal 500, which is installed on the stirring hole 310; the stirring paddle 400 is connected to a power motor 600 including a frame reducer, etc. after passing through the stirring seal 500. The main feature of Part B is the anchor-type stirring blade, which has low power.

[0031] The second embodiment is suitable for small-scale evaporation and has low cost.

[0032] During implementation, the diameters of the evaporation chamber barrel 110 and the heating chamber barrel 210 are selected from the sizes corresponding to the standard glass-lined reactor, and the stirring holes 310 and the functional interfaces 320 of the reactor cover adopt the layout and sizes of the standard glass-lined reactor. In this way, the main non-standard parts of the evaporation and concentration kettle are the glass-lined evaporation chamber barrel 110 and the glass-lined long-axis two-paddle stirring paddle 400, and the processing difficulty is not high.

[0033] The working principle of the above embodiment is:

[0034] 1. Separate evaporation and heating. The evaporation chamber has no jacket. During evaporation, the wall temperature of the evaporation chamber will not be higher than the center temperature of the liquid, which can reduce the occurrence of adverse thermal effects.

[0035] 2. The diameter of the evaporation chamber is larger than that of the heating chamber, so the liquid surface is more stable during evaporation and there is less adhesion to the wall.

[0036] 3. The heating chamber is small, and the heat transfer is enhanced by the spiral guide plate. During concentration, increasingly concentrated materials are concentrated into a small volume, which effectively enhances the heat transfer of the materials.

[0037] 4. Pre-weld the notch plate on the glass-lined barrel, so that the heat is evenly distributed during enameling and the heat is dissipated quickly during leg welding, which reduces stress and stabilizes the glass layer.

[0038] The glass-lined evaporation and concentration kettle of the utility model has a large evaporation chamber without a heating jacket, stable evaporation, and is not prone to adverse thermal effects such as wall adhesion on the feed liquid. It is particularly suitable for the evaporation and concentration of feed liquids that are prone to gelling or have a high concentration ratio or require final sandification.

[0039] The following is an operating example using the evaporation concentration of the easily dried pedot:pss organic nano-dispersion to demonstrate the technical effect of the utility model.

[0040] In the comparative example, the evaporator is configured to adopt a 300L standard glass-lined jacket reactor, mechanical seal, variable frequency power motor, and an operating speed of 50-200rpm. The pedot:pss organic nano-dispersion liquid is evaporated and concentrated under negative pressure at 60°C, and the content is concentrated from 0.8% to 1.6%. After the discharge is cooled, a large amount of evaporated dry matter is filtered out with a sieve, and the pedot:pss component loss in the process is about 15%.

[0041] In the operation example, the evaporator is configured as the glass-lined evaporation and concentration kettle of the utility model, the heating chamber directly adopts the 100L standard glass-lined K-type reactor body (diameter 600mm), the evaporation chamber (diameter 800) is customized according to the utility model, the lower stirring blade is anchor-type and the upper stirring blade is paddle-type. The stirring paddle with a shaft diameter of 65 is customized according to the requirements of the utility model, equipped with mechanical seals, variable frequency power motors, and an operating speed of 50-250rpm. The pedot:pss organic nano-dispersion liquid consistent with the comparative example is evaporated and concentrated at a negative pressure of 60℃, and the content is concentrated from 0.8% to 1.6%. The discharged material is cooled and filtered with a screen, and the evaporated dried product is very small. The pedot:pss component loss in the process is about 5%.

[0042] It is obvious from the component loss data that, compared with the comparative example, the component loss of PEOT:PSD organic nano-dispersion liquid evaporated and concentrated by the glass-lined evaporation and concentration kettle of the utility model is significantly lower, indicating that the undesirable thermal effect of wall adhesion by the glass-lined evaporation and concentration kettle of the utility model is very low.

[0043] It should be noted that, in this article, relational terms such as first and second are only used to distinguish an entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various additions, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glass-lined evaporation and concentration kettle, comprising a power motor (600) including a frame reducer, and a stirring seal (500), characterized in that : comprising an evaporation chamber (100), the evaporation chamber (100) comprising an evaporation chamber barrel body (110) and a connection head (120) integral therewith; the connection head (120) is connected below a heating chamber (200) having a smaller diameter than the evaporation chamber barrel body (110), the heating chamber (200) comprising a heating chamber barrel body (210) and a jacket (220) welded thereto, the heating chamber barrel body (210) having a discharge port (211) at the bottom, the jacket (220) 20) comprises an upper jacket interface (221) and a lower jacket interface (222); the heating chamber (200) and the connecting head (120) are connected via a lower clip (230); the evaporation chamber barrel body (110) is connected to a kettle cover (300), and the kettle cover (300) comprises a central stirring hole (310) and a plurality of eccentric functional interfaces (320); and 3-4 legs (700) are connected to the outer side of the evaporation chamber barrel body (110).

2. A glass-lined evaporation and concentration kettle according to claim 1, characterized in that A stirring paddle (400) is installed in the stirring hole (310), and the stirring paddle (400) includes an upper stirring blade (410) and a lower stirring blade (420), wherein the upper stirring blade (410) is arranged in or near the space of the connecting head (120), and the lower stirring blade (420) is arranged in the space of the heating chamber barrel (210).

3. A glass-lined evaporation and concentration kettle according to claim 2, characterized in that The upper stirring blade (410) is a paddle-type blade, and the upper stirring blade (410) is arranged in or near the space of the connecting head (120); the lower stirring blade (420) is an anchor-type blade or a frame-type blade, and the lower stirring blade (420) is arranged at the bottom of the heating chamber.

4. A glass-lined evaporation and concentration kettle according to claim 1 or 2, characterized in that The evaporation chamber barrel body (110) and the kettle cover (300) are connected via an upper clip (130).

5. A glass-lined evaporation and concentration kettle according to claim 1 or 2, characterized in that The evaporation chamber barrel body (110) and the kettle cover (300) are connected by welding with enameling as one body.

6. A glass-lined evaporation and concentration kettle according to claim 1 or 2, characterized in that The connecting head (120) is an elliptical head with an arc transition at the folded edge.

7. A glass-lined evaporation and concentration kettle according to claim 1 or 2, characterized in that The connecting head (120) is a conical head with a folded edge and an arc transition.

8. A glass-lined evaporation and concentration kettle according to claim 1 or 2, characterized in that A spiral guide plate (240) is provided in the heating chamber barrel (210) and the jacket (220).

9. A glass-lined evaporation and concentration kettle according to claim 1 or 2, characterized in that The support legs (700) connected to the outer side of the evaporation chamber barrel body (110) are structured as follows: before enameling, a certain number of rectangular notched plates with notches on one side are pre-welded at the position of the support legs (700) on the evaporation chamber barrel body (110), and the number of notches of each notched plate is 2-6. After enameling, the evaporation chamber barrel body (110) welded with the notched plates is welded with the support legs (700) on the other side of the notched plates; each support leg (700) corresponds to 2-4 notched plates, and each support leg (700) is matched with a corresponding number of notched plates; the notched edge of the notched plate is welded to the inner notched support leg (710) on the evaporation chamber barrel body (110), or the flat edge of the notched plate is welded to the outer notched support leg (720) on the evaporation chamber barrel body (110).

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