CN212215517U - Energy-saving reaction kettle for producing sodium borohydride - Google Patents
Energy-saving reaction kettle for producing sodium borohydride Download PDFInfo
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- CN212215517U CN212215517U CN202021479610.1U CN202021479610U CN212215517U CN 212215517 U CN212215517 U CN 212215517U CN 202021479610 U CN202021479610 U CN 202021479610U CN 212215517 U CN212215517 U CN 212215517U
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Abstract
The utility model discloses an energy-conserving reation kettle of production sodium borohydride, it relates to sodium borohydride production facility technical field. The top of the reaction kettle body is provided with a feeding pipe, the side edge of the reaction kettle body is provided with a discharging pipe, the bottom of the reaction kettle body is provided with a discharging pipe, and the inside of the reaction kettle body is provided with a stirring shaft and a stirring paddle; one side of the top of the reaction kettle body is provided with a vent pipe, the periphery of the heating dissolving tank is provided with an inner heating interlayer and an outer heating interlayer, the vent pipe is communicated with the outer heating interlayer, and the outer heating interlayer is communicated with the recovery tank; the periphery of the reaction kettle body is provided with a cooling jacket, a liquid inlet of the cooling jacket is communicated with a cooling liquid storage tank, a liquid outlet of the cooling jacket is communicated with an inner side heating interlayer, and the inner side heating interlayer is communicated with a cooling liquid recovery tank. The utility model has the advantages that: the emptied trimethyl borate is recycled, the waste of raw materials is avoided, the product yield can be ensured, the lost trimethyl borate heat can be used for heating and dissolving other materials, the heat is fully utilized, the energy is saved, the environment is protected, the stirring effect is good, and the reaction is more sufficient.
Description
Technical Field
The utility model relates to a sodium borohydride production facility technical field, concretely relates to energy-conserving production sodium borohydride's reation kettle.
Background
Sodium borohydride is a good reducing agent, its characteristic is stable performance, reduction is selective, can be used as aldehyde, ketone and acyl chloride reducing agent, plastic foaming agent, hydrogenation agent for manufacturing dihydrostreptomycin, intermediate for manufacturing potassium borohydride, raw materials for synthesizing borane and used in paper industry and treatment agent of sewage containing mercury, etc.. In the production process of sodium borohydride, firstly, sodium hydride is prepared by reacting metal sodium with hydrogen, and then the sodium hydride and trimethyl borate react to generate sodium borohydride and sodium methoxide, namely, the hydroboration reaction. The hydroboration reaction has great influence on the quality and yield of the finished product sodium borohydride.
In the existing production of sodium borohydride, the equipment used in the hydroboration reaction is a hydroboration reaction kettle, and the reaction process is to add sodium hydride and white oil into the hydroboration reaction kettle, and then to drop trimethyl borate to react to generate sodium borohydride and sodium methoxide. The heat is released in the hydroboration reaction, the temperature of the hydroboration reaction kettle is very high and is higher than 240 ℃, so the reaction kettle needs to be emptied in the reaction process, and because the boiling point of the trimethyl borate serving as the raw material is very low and is 67-68 ℃, the trimethyl borate can be lost more from an emptying pipeline.
In the prior art, the emptying is directly carried out, so that raw materials are wasted, the raw material ratio of trimethyl borate and sodium hydride is disordered, the reaction effect and the yield of sodium borohydride are influenced, meanwhile, the heat is discharged due to the direct emptying, the generated heat is not effectively utilized, and the energy waste is caused; the stirring effect is poor, the reaction is insufficient, and the incompletely reacted materials are mixed in the finished product and discharged together.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a preparation facilities of potassium borohydride to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above purpose, the technical scheme of the utility model is that: the device comprises a reaction kettle body, wherein a feeding pipe is arranged on one side of the top of the reaction kettle body, a discharging pipe is arranged below the side edge of the reaction kettle body, a discharging pipe is arranged at the bottom of the reaction kettle body, and a stirring shaft and a stirring paddle are arranged in the reaction kettle body;
the other side of the top of the reaction kettle body is provided with a vent pipe, the side edge of the reaction kettle body is provided with a heating dissolving tank, two heating interlayers are arranged on the periphery of the heating dissolving tank and are respectively an inner heating interlayer and an outer heating interlayer, the inner heating interlayer and the outer heating interlayer are not communicated, the outlet end of the vent pipe is communicated with the outer heating interlayer, and the other side of the outer heating interlayer relative to the vent pipe is communicated with a recovery tank;
the periphery of the reaction kettle body is provided with a cooling jacket, a liquid inlet of the cooling jacket is communicated with a cooling liquid storage tank, a liquid outlet of the cooling jacket is communicated with one side of an inner side heating interlayer at the periphery of the heating dissolving tank, and the other side of the inner side heating interlayer relative to the emptying pipe is communicated with a cooling liquid recovery tank.
Preferably, the (mixing) shaft rotates through installing the agitator motor drive at reation kettle body top, is connected with the stirring rake on the (mixing) shaft, the stirring rake has bottom arc, horizontal oar and erects the oar, the center of bottom arc is connected in the bottom of (mixing) shaft, and the crooked radian of bottom arc is unanimous with the crooked radian of reation kettle body bottom, and the (mixing) shaft both sides are connected with horizontal oar, connect through the perpendicular oar of several equidistant distribution between horizontal oar and the bottom arc.
Preferably, a cooling device is connected between the cooling liquid recovery tank and the cooling liquid storage tank.
Compared with the prior art, the beneficial effects of the utility model are that: the cooling liquid heated by heat exchange in the cooling jacket is introduced into the inner heating interlayer outside the heating and dissolving tank, and the emptied trimethyl borate is introduced into the outer heating interlayer of the heating and dissolving tank, so that the heat of the heated cooling liquid and the lost trimethyl borate can heat and dissolve the substances in the heating and dissolving tank, the heat is fully utilized, and the energy conservation and environmental protection are realized;
after the heat of the vented trimethyl borate is used, introducing the heat into a recovery tank for collection, and recycling the heat, so that the waste of raw materials is avoided, and the product yield is ensured;
the stirring rake passes through the combination of horizontal oar with erect the oar, can guarantee the stirring range, and stirring effect is better, and the reaction is more abundant, and a small amount of unfinished reaction's material is discharged through the row's of bottom material pipe, and the sodium borohydride that the reaction was made is discharged through the side discharging pipe, can not be in the same place, ensures the yield of sodium borohydride.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: the device comprises a reaction kettle body 1, a feeding pipe 2, a discharging pipe 3, a discharging pipe 4, a stirring shaft 5, a stirring paddle 6, a bottom arc-shaped plate 61, a horizontal paddle 62, a vertical paddle 63, a vent pipe 7, a cooling jacket 8, a heating dissolving tank 9, an inner side heating interlayer 101, an outer side heating interlayer 102, a recovery tank 11, a cooling liquid storage tank 12 and a cooling liquid recovery tank 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the following technical solutions are adopted in the present embodiment: including the reation kettle body 1, reation kettle body 1's top one side is equipped with inlet pipe 2, reation kettle body 1's side below is equipped with discharging pipe 3, reation kettle body 1's bottom is equipped with row material pipe 4, reation kettle body 1's inside is equipped with (mixing) shaft 5 and stirring rake 6, the material gets into reation kettle body 1 through inlet pipe 2 in, the sodium borohydride of making discharges through discharging pipe 3, a small amount of unfinished reaction's material discharges through row material pipe 4 of bottom, prevent that unfinished reaction's material and finished product from mixing together.
The stirring shaft 5 is driven to rotate by a stirring motor arranged at the top of the reaction kettle body 1, the structure and the working principle of the stirring motor are mature prior art and are not explained any more, the stirring shaft 5 is connected with a stirring paddle 6, the stirring motor drives the stirring shaft 5 to rotate, the stirring shaft 5 drives the stirring paddle 6 to rotate, the materials in the reaction kettle body 1 are mixed and stirred, the reaction is more sufficient, the stirring paddle 6 is provided with a bottom arc plate 61, a transverse paddle 62 and a vertical paddle 63, the center of the bottom arc plate 61 is connected with the bottom of the stirring shaft 5, the bending radian of the bottom arc plate 61 is consistent with the bending radian of the bottom of the reaction kettle body 1, the materials at the bottom of the reaction kettle body 1 can be stirred during stirring, the transverse paddles 62 are connected with the two sides of the stirring shaft 5, the transverse paddles 62 are connected with the bottom arc plate 61 through a plurality of vertical paddles 63 which are distributed at equal intervals, the plurality of vertical paddles, the materials in the reaction kettle body 1 can be fully stirred, the stirring effect is good, and the reaction is more sufficient.
The other side of the top of the reaction kettle body 1 is provided with an emptying pipe 7, the side of the reaction kettle body 1 is provided with a heating dissolving tank 9, the periphery of the heating dissolving tank 9 is provided with two layers of heating interlayers, namely an inner side heating interlayer 101 and an outer side heating interlayer 102, the inner side heating interlayer 101 and the outer side heating interlayer 102 are not communicated, the outlet end of the emptying pipe 7 is communicated with the outer side heating interlayer 102, the outer side heating interlayer 102 is communicated with a recovery tank 11 relative to the other side of the emptying pipe 7, trimethyl borate discharged from the emptying pipe 7 is introduced into the outer side heating interlayer 102, and heat can heat and dissolve substances needing to be heated in the heating dissolving tank.
The periphery of the reaction kettle body 1 is provided with a cooling jacket 8, a liquid inlet of the cooling jacket 8 is communicated with a cooling liquid storage tank 12, cooling liquid in the cooling jacket 8 is used for cooling the reaction kettle body 1, a liquid outlet of the cooling jacket 8 is communicated with one side of an inner side heating interlayer 101 at the periphery of the heating dissolving tank 9, cooling liquid heated by heat exchange in the cooling jacket 8 is introduced into the inner side heating interlayer 101 to heat and dissolve substances in the heating dissolving tank 9, the other side, opposite to the emptying pipe 7, of the inner side heating interlayer 101 is communicated with a cooling liquid recovery tank 13, cooling liquid used by heat is recovered into the cooling liquid recovery tank 13, a cooling device is connected between the cooling liquid recovery tank 13 and the cooling liquid storage tank 12, and the cooling liquid in the cooling liquid recovery tank 13 is cooled by the cooling device and then stored in the cooling liquid storage tank 12 for recycling.
The utility model discloses during operation, add sodium hydride and white oil into the hydroboration reation kettle body 1, then from inlet pipe 2 dropwise add boric acid trimethyl ester make its reaction generate sodium borohydride and sodium methoxide, the (mixing) shaft 5 rotates under agitator motor's drive, drive stirring rake 6 and stir the material, can stir the material of reation kettle body 1 bottom when bottom arc 61 stirs, several vertical rakes 63 can form a plurality of different radial stirring circle when the (mixing) shaft 5 rotates, can fully stir the material in the reation kettle body 1, stirring effect is good, promote the reaction evenly, the reaction is exothermic reaction, utilize cooling jacket 8 to carry out the cooling processing to reation kettle body 1, the reaction process superheated gas discharges from blow-down pipe 7, the trimethyl borate of loss also discharges from blow-down pipe 7, in the outside heating intermediate layer 102 of heating dissolving tank 9 behind blow-down pipe 7, the material in the heating and dissolving tank 9 is heated and dissolved, meanwhile, the cooling liquid heated through heat exchange in the cooling jacket 8 is introduced into the heating interlayer 101 on the inner side of the heating and dissolving tank 9, the material in the heating and dissolving tank 9 is heated and dissolved, the temperature of trimethyl borate is higher than that of the cooling liquid heated, the trimethyl borate and the cooling liquid can simultaneously heat and dissolve the material, the heat is fully utilized, the energy is saved, the environment is protected, the heat of the emptied trimethyl borate is used, the discharged trimethyl borate is introduced into the recovery tank 11 to be collected and recycled, the waste of raw materials is avoided, the product sodium borohydride after the reaction is finished is discharged from the discharge pipe 3, a small amount of material which is not finished to be reacted is discharged through the discharge pipe 4 at the bottom, the material which is not finished to be reacted can not be mixed in the generated sodium borohydride, and the.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. Energy-conserving reation kettle of production sodium borohydride, including the reation kettle body, its characterized in that: a feeding pipe is arranged on one side of the top of the reaction kettle body, a discharging pipe is arranged below the side edge of the reaction kettle body, a discharging pipe is arranged at the bottom of the reaction kettle body, and a stirring shaft and a stirring paddle are arranged inside the reaction kettle body;
the other side of the top of the reaction kettle body is provided with a vent pipe, the side edge of the reaction kettle body is provided with a heating dissolving tank, two heating interlayers are arranged on the periphery of the heating dissolving tank and are respectively an inner heating interlayer and an outer heating interlayer, the inner heating interlayer and the outer heating interlayer are not communicated, the outlet end of the vent pipe is communicated with the outer heating interlayer, and the other side of the outer heating interlayer relative to the vent pipe is communicated with a recovery tank;
the periphery of the reaction kettle body is provided with a cooling jacket, a liquid inlet of the cooling jacket is communicated with a cooling liquid storage tank, a liquid outlet of the cooling jacket is communicated with one side of an inner side heating interlayer at the periphery of the heating dissolving tank, and the other side of the inner side heating interlayer relative to the emptying pipe is communicated with a cooling liquid recovery tank.
2. The energy-saving reaction kettle for producing sodium borohydride according to claim 1, characterized in that: the (mixing) shaft rotates through installing the agitator motor drive at reation kettle body top, is connected with the stirring rake on the (mixing) shaft, the stirring rake has bottom arc, horizontal oar and perpendicular oar, the center of bottom arc is connected in the bottom of (mixing) shaft, and the crooked radian of bottom arc is unanimous with the crooked radian of reation kettle body bottom, and the (mixing) shaft both sides are connected with horizontal oar, be connected through the perpendicular oar of several equidistant distribution between horizontal oar and the bottom arc.
3. The energy-saving reaction kettle for producing sodium borohydride according to claim 1, characterized in that: and a cooling device is connected between the cooling liquid recovery tank and the cooling liquid storage tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021479610.1U CN212215517U (en) | 2020-07-24 | 2020-07-24 | Energy-saving reaction kettle for producing sodium borohydride |
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| CN202021479610.1U CN212215517U (en) | 2020-07-24 | 2020-07-24 | Energy-saving reaction kettle for producing sodium borohydride |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571838A (en) * | 2021-07-30 | 2021-10-29 | 中材锂膜有限公司 | Small-scale white mineral oil circulation heating system and method in lithium battery diaphragm production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571838A (en) * | 2021-07-30 | 2021-10-29 | 中材锂膜有限公司 | Small-scale white mineral oil circulation heating system and method in lithium battery diaphragm production |
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