Granular sodium ethoxide production device
By combining a three-stage drying process with a high-intensity mixing granulator, the problem of small sodium ethoxide particle size was solved, achieving uniform and regular particle preparation, and improving production efficiency and product quality consistency.
Patent Information
- Application Number
- CN202520456649.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-14
AI Technical Summary
In existing sodium ethoxide production facilities, the small particle size of sodium ethoxide makes the powdery material prone to dust generation and environmental pollution. Furthermore, its poor flowability makes it difficult to accurately control the feeding speed and flow rate, affecting the consistency of product quality.
A three-stage drying process is adopted, which uses vertical and horizontal thin-film evaporators combined with a high-intensity mixing granulator to perform pre-drying, re-drying and thorough drying respectively. The solvent effect is used to change the surface tension of the material, and with the high-speed motion and gear design of the high-intensity mixing granulator, uniform and regular granules are prepared.
This method enables the efficient preparation of granular sodium ethoxide, solves the dust problem of powdered materials, improves flowability and particle size uniformity, and ensures consistent product quality and clean production.
Smart Images
Figure CN223875049U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of metal alkoxide, and relates to sodium ethoxide, in particular to a granular sodium ethoxide production device. BACKGROUND
[0002] As an important chemical reagent, sodium ethoxide has shown its unique application value in many fields. First, in the field of organic synthesis, sodium ethoxide, as a strong base catalyst, widely participates in various reactions such as Aza-Michael addition, Michael addition, Knoevenagel condensation and aldol condensation, effectively promoting the formation of carbon-carbon bond and carbon-oxygen bond. Secondly, sodium ethoxide also plays a key role in the preparation of aldehyde, ketone, carboxylic acid and fatty acid salt. Through reaction with different compounds, the required product can be efficiently synthesized. In addition, in the preparation of naphthenic derivatives, sodium ethoxide as a strong base catalyst is crucial for the hydrogenolysis of cyclic carbonyl compounds. In summary, sodium ethoxide occupies a pivotal position in the chemical industry due to its multifunctionality and wide application.
[0003] Particle size is very important in industries such as powder metallurgy, pharmaceuticals, coatings, and food processing, as the particle size directly affects the performance of the product, such as solubility, flowability, reactivity, etc. Currently, the form of sodium ethoxide is powder, which is prone to dust, polluting the working environment, harming the health of operators, and increasing material loss. The flowability of powder materials varies greatly, and it is difficult to accurately control the feeding speed and flow rate with conventional feeding methods, affecting the consistency of product quality. In addition, powder is prone to remain in the gaps and dead angles of the feeding equipment, making cleaning difficult and leading to cross-contamination.
[0004] Therefore, finding a production process for granular sodium ethoxide with excellent quality has become a major problem in this field. SUMMARY
[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a granular sodium ethoxide production device to solve the technical problem of small particle size of sodium ethoxide produced by the production device in the prior art.
[0006] To solve the above technical problems, the utility model adopts the following technical solutions.
[0007] A granular sodium ethoxide production device, comprising a reaction kettle, the bottom discharge port of the reaction kettle is connected with the feed inlet of a vertical thin film evaporator through a second material transfer pump.
[0008] The bottom discharge port of the vertical thin film evaporator is connected with the feed inlet of a reprocessing kettle through a third material transfer pump; the bottom discharge port of the reprocessing kettle is connected with the feed inlet of a horizontal thin film evaporator through a fifth material transfer pump.
[0009] The bottom discharge port of the horizontal thin film evaporator is connected with the feeding port of the strong mixing granulator through a sixth material transfer pump; the discharge port of the strong mixing granulator is connected with the packaging machine through a solid material conveyor.
[0010] The utility model also has the following technical features.
[0011] The top discharge port of the vertical thin film evaporator is connected with the feeding port of an ethanol storage tank to recycle ethanol; the bottom discharge port of the ethanol storage tank is connected with the first feeding port of the reaction kettle through a first material transfer pump to supply material.
[0012] The second feeding port of the reaction kettle is connected with a liquid sodium constant pressure dropping tank to supply material.
[0013] The top discharge port of the reaction kettle is connected with the shell side feeding port of the first condenser; the shell side top exhaust port of the first condenser is directly connected with the tail gas absorption tower; the shell side bottom discharge port of the first condenser is connected with the third feeding port of the reaction kettle.
[0014] The top discharge port of the horizontal thin film evaporator is connected with the shell side feeding port of the second condenser; the shell side bottom discharge port of the second condenser is connected with the feeding port of the ethanol storage tank to recycle ethanol.
[0015] The top discharge port of the strong mixing granulator is connected with the shell side feeding port of the third condenser; the shell side bottom discharge port of the third condenser is connected with the feeding port of an o-xylene storage tank to recycle o-xylene; the bottom discharge port of the o-xylene storage tank is connected with the feeding port of the reprocessing kettle through a fourth material transfer pump to provide reprocessing solvent.
[0016] Compared with the prior art, the utility model has the following beneficial technical effects:
[0017] (I) The device adopts three-stage drying; first, the vertical thin film evaporator is used for pre-drying to 40wt% to 50wt% concentration, then o-xylene is added as a solvent to change the surface tension of the system by using the solvent effect; second, the horizontal thin film evaporator is used for secondary drying to 90wt% to 95wt% to make the system have certain adhesion; third, the strong mixing granulator is used for third complete drying to improve the granularity.
[0018] (II) The reaction and drying of the device are operated separately, the process operation is simple and efficient, and continuous production can be achieved by reacting and drying at the same time.
[0019] (III) The strong mixing granulator of the device is driven by a motor to move at high speed; the unique gear design has a large strength impact, shearing and dispersion effect on the material; the prepared particles are uniform and regular; the side scraper also plays an auxiliary unloading role, and the unloading is clean without residue. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a whole structure schematic diagram of the granular sodium ethoxide production device.
[0021] The meanings of various reference numerals in the drawing are as follows: 1 - reaction kettle, 2 - vertical thin film evaporator, 3 - reprocessing kettle, 4 - horizontal thin film evaporator, 5 - intensive mixing granulator, 6 - packaging machine, 7 - ethanol storage tank, 8 - o-xylene storage tank, 9 - first condenser, 10 - second condenser, 11 - third condenser, 12 - tail gas absorption tower, 13 - liquid sodium constant pressure dropping tank.
[0022] 14 - first material transfer pump, 15 - second material transfer pump, 16 - third material transfer pump, 17 - fourth material transfer pump, 18 - fifth material transfer pump, 19 - sixth material transfer pump, 20 - solid material conveyor, 21 - valve, 22 - pipeline.
[0023] 101 - first feed inlet, 102 - second feed inlet, 103 - third feed inlet, 104 - top discharge outlet, 105 - bottom discharge outlet.
[0024] The specific content of the utility model is further explained and described in detail in combination with the embodiments. DETAILED DESCRIPTION
[0025] It should be noted that all the parts, devices and raw materials in the utility model, if not specially stated, all adopt the parts, devices and raw materials known in the prior art.
[0026] The various devices in the utility model are mainly connected through the pipelines 22, and the valves 21 are arranged on each pipeline 22 according to the needs, and are opened or closed according to the process requirements. All the valves 21 in the utility model adopt the commonly used valves in the prior art.
[0027] According to the above technical scheme, the specific embodiments of the utility model are given below, and it should be noted that the utility model is not limited to the following specific embodiments, and any equivalent transformation based on the technical scheme of the present application falls within the protection scope of the utility model.
[0028] Embodiment:
[0029] This embodiment gives a kind of granular sodium ethoxide production device, as shown in Figure Figure 1 The bottom discharge outlet 105 of the reaction kettle 1 is connected with the feed inlet of the vertical thin film evaporator 2 by the second material transfer pump 15.
[0030] As shown in Figure Figure 1As shown, the bottom outlet of the vertical thin-film evaporator 2 is connected to the inlet of the reprocessing vessel 3 via the third transfer pump 16; the bottom outlet of the reprocessing vessel 3 is connected to the inlet of the horizontal thin-film evaporator 4 via the fifth transfer pump 18.
[0031] like Figure 1 As shown, the bottom outlet of the horizontal thin-film evaporator 4 is connected to the inlet of the high-intensity mixing granulator 5 via the sixth transfer pump 19; the outlet of the high-intensity mixing granulator 5 is connected to the packaging machine 6 via the solid material conveyor 20.
[0032] As a preferred embodiment of this invention, such as Figure 1 As shown, the top outlet of the vertical thin-film evaporator 2 is connected to the inlet of the ethanol storage tank 7 to recover ethanol; the bottom outlet of the ethanol storage tank 7 is connected to the first inlet 101 of the reactor 1 through the first transfer pump 14 to supply material.
[0033] As a preferred embodiment of this invention, such as Figure 1 As shown, the second feed port 102 of the reactor 1 is connected to the liquid sodium constant pressure dripping tank 13 for feeding.
[0034] As a preferred embodiment of this invention, such as Figure 1 As shown, the top outlet 104 of the reactor 1 is connected to the shell-side inlet of the first condenser 9, the top exhaust port of the shell-side of the first condenser 9 is directly connected to the tail gas absorption tower 12, and the bottom outlet 902 of the shell-side of the first condenser 9 is connected to the third inlet 103 of the reactor 1.
[0035] As a preferred embodiment of this invention, such as Figure 1 As shown, the top outlet of the horizontal thin-film evaporator 4 is connected to the shell-side inlet of the second condenser 10, and the bottom outlet of the shell-side of the second condenser 10 is connected to the inlet of the ethanol storage tank 7 to recover ethanol.
[0036] As a preferred embodiment of this invention, such as Figure 1 As shown, the top outlet of the high-intensity mixing granulator 5 is connected to the shell-side inlet of the third condenser 11, the bottom outlet of the shell-side of the third condenser 11 is connected to the inlet of the o-xylene storage tank 8 to recover o-xylene, and the bottom outlet of the o-xylene storage tank 8 is connected to the inlet of the reprocessing vessel 3 through the fourth transfer pump 17 to provide reprocessing solvent.
[0037] The process for producing granulated sodium ethoxide using the granulated sodium ethoxide production apparatus of this invention is as follows:
[0038] The reactor 1 is preheated to 120-130°C, ethanol is added into the reactor 1 through the first transfer pump 14, and the first transfer pump 14 is closed. The first condenser 9 is opened, and the dropping of sodium is started. The dropping is completed in 1-2 hours, and the vertical thin film evaporator 2 is preheated during the dropping. During the reaction, the evaporated ethanol is condensed by the first condenser 9 and returned to the reactor 1, and the sodium ethoxide-ethanol solution is obtained after 2-3 hours of reaction, and the first condenser 9 is closed.
[0039] The sodium ethoxide-ethanol solution is transferred to the preheated vertical thin film evaporator 2 through the second transfer pump 15 for pre-drying, and the obtained 40wt%-50wt% viscous fluid is transferred to the reprocessing tank 3 through the third transfer pump 16, and the third transfer pump 16 is closed.
[0040] The appropriate amount of o-xylene is transferred from the o-xylene storage tank 8 to the reprocessing tank 3 through the fourth transfer pump 17, and the fourth transfer pump 17 is closed, and the horizontal thin film evaporator 4 is preheated during the transferring. The reprocessing liquid is obtained after 0.5-1 hours of stirring and mixing in the reprocessing tank 3.
[0041] The reprocessing liquid is transferred to the horizontal thin film evaporator 4 through the fifth transfer pump 18 for secondary drying to 90wt%-95wt%, and the dried ethanol is condensed by the second condenser 10 and enters the ethanol storage tank 7; the remaining sodium ethoxide and o-xylene mixed liquid. The secondary drying is completed after 0.5 hours of operation of the horizontal thin film evaporator 4.
[0042] The sodium ethoxide and o-xylene mixed liquid is transferred to the strong mixing granulator 5 through the sixth transfer pump 19, and then the sixth transfer pump 19 is closed. The strong mixing granulator 5 is opened and heated and stirred for 0.5 hours for the third drying, and the dried o-xylene is condensed by the third condenser 11 and transferred to the o-xylene storage tank 8 for recycling. After the third drying is completed, the granular sodium ethoxide obtained by drying is transferred to the packaging machine 6 through the solid material conveyor 20 for packaging.
Claims
1. A granular sodium ethoxide production apparatus comprising a reaction vessel (1), characterized in that, The bottom discharge port (105) of the reaction kettle (1) is connected with the feed inlet of the vertical thin film evaporator (2) through the second material transfer pump (15); The bottom discharge port of the vertical thin film evaporator (2) is connected with the feed inlet of the reprocessing kettle (3) through the third material transfer pump (16); the bottom discharge port of the reprocessing kettle (3) is connected with the feed inlet of the horizontal thin film evaporator (4) through the fifth material transfer pump (18); The bottom discharge port of the horizontal thin film evaporator (4) is connected with the feed inlet of the strong mixing granulator (5) through the sixth material transfer pump (19); the discharge port of the strong mixing granulator (5) is connected with the packaging machine (6) through the solid material conveyor (20).
2. The granular sodium ethoxide production apparatus according to claim 1, wherein The top discharge port of the vertical thin film evaporator (2) is connected with the feed inlet of the ethanol storage tank (7) to recycle ethanol; the bottom discharge port of the ethanol storage tank (7) is connected with the first feed inlet (101) of the reaction kettle (1) through the first material transfer pump (14).
3. The granular sodium ethoxide production apparatus according to claim 1, wherein The second feed inlet (102) of the reaction kettle (1) is connected with the liquid sodium constant pressure dropping tank (13) to supply material.
4. The granular sodium ethoxide production apparatus according to claim 1, wherein The top discharge port (104) of the reaction kettle (1) is connected with the shell side feed inlet of the first condenser (9); the shell side top exhaust port of the first condenser (9) is directly connected with the tail gas absorption tower (12); the shell side bottom discharge port (902) of the first condenser (9) is connected with the third feed inlet (103) of the reaction kettle (1).
5. The granular sodium ethoxide production apparatus according to claim 1, wherein The top discharge port of the horizontal thin film evaporator (4) is connected with the shell side feed inlet of the second condenser (10); the shell side bottom discharge port of the second condenser (10) is connected with the feed inlet of the ethanol storage tank (7) to recycle ethanol.
6. The granular sodium ethoxide production apparatus according to claim 1, wherein The top discharge port of the strong mixing granulator (5) is connected with the shell side feed inlet of the third condenser (11); the shell side bottom discharge port of the third condenser (11) is connected with the feed inlet of the o-xylene storage tank (8) to recycle o-xylene; the bottom discharge port of the o-xylene storage tank (8) is connected with the feed inlet of the reprocessing kettle (3) through the fourth material transfer pump (17) to provide reprocessing solvent.