CN111589392A - High-strength corrosion-resistant glass reaction kettle and preparation method thereof - Google Patents
High-strength corrosion-resistant glass reaction kettle and preparation method thereof Download PDFInfo
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- CN111589392A CN111589392A CN202010595639.4A CN202010595639A CN111589392A CN 111589392 A CN111589392 A CN 111589392A CN 202010595639 A CN202010595639 A CN 202010595639A CN 111589392 A CN111589392 A CN 111589392A
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- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
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- B01J19/0053—Details of the reactor
- B01J19/0073—Sealings
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1868—Stationary reactors having moving elements inside resulting in a loop-type movement
- B01J19/1881—Stationary reactors having moving elements inside resulting in a loop-type movement externally, i.e. the mixture leaving the vessel and subsequently re-entering it
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
- C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/20—Compositions for glass with special properties for chemical resistant glass
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- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/02—Apparatus characterised by their chemically-resistant properties
- B01J2219/025—Apparatus characterised by their chemically-resistant properties characterised by the construction materials of the reactor vessel proper
- B01J2219/0254—Glass
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Abstract
The invention provides a high-strength corrosion-resistant glass reaction kettle and a preparation method thereof, belonging to the technical field of reaction kettle equipment. The high-strength corrosion-resistant glass reaction kettle has high mechanical strength and corrosion resistance, and the kettle body has high transparency, glossiness and viscosity.
Description
Technical Field
The invention belongs to the technical field of reaction kettle equipment, and particularly relates to a high-strength corrosion-resistant glass reaction kettle and a preparation method thereof.
Background
Reaction solvent placed in the inner layer of the glass reaction kettle can be used for stirring reaction, the interlayer can be used for high-temperature reaction (the highest temperature can reach 300 ℃) through cold and heat source circulation; the glass reaction kettle can also carry out low-temperature reaction (the lowest temperature can reach-80 ℃); the glass reaction kettle can be vacuumized to carry out negative pressure reaction. And the unique design of the test bed enables the test to be safer and more convenient.
Because the operations such as stirring, heating, vacuumizing and the like are carried out in the glass reaction kettle, the glass reaction kettle is required to have higher strength; and various raw material liquids exist in the reaction kettle, so that the glass reaction kettle is required to have higher corrosion resistance. However, when the strength of the glass is improved, the traditional glass reaction kettle has larger brittleness, and the transparency of the traditional glass reaction kettle cannot be maintained when the corrosion resistance of the traditional glass reaction kettle is enhanced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high-strength corrosion-resistant glass reaction kettle and the preparation method thereof, the high-strength corrosion-resistant glass reaction kettle has higher mechanical strength and better corrosion resistance, the kettle body has better transparency, glossiness and viscosity, and the preparation method of the high-strength corrosion-resistant glass reaction kettle is simple and is suitable for large-scale industrial popularization and application.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a corrosion-resistant glass reation kettle of high strength, includes the cauldron body, mount, stirring part, constant voltage funnel and condensing part, the cauldron body is fixed in on the mount, cauldron body top is equipped with the kettle cover, be equipped with the feed inlet on the kettle cover, cauldron body bottom is equipped with the discharge gate, discharge gate department is equipped with the control valve, stirring part and the fixed continuous and partial kettle cover of wearing to locate of mount stretch to the cauldron internal, constant voltage funnel and condensing part link to each other with the kettle cover is fixed, the cauldron body and kettle cover are made by corrosion-resistant glass of high strength. A small amount of dropwise adding agent can be added at the constant-pressure funnel, and the constant pressure in the reaction kettle can be maintained to protect the reaction kettle; the condensing part may condense the produced product or the solvent.
Further, the cauldron body is double-deck intermediate layer, cauldron body intermediate layer is close to the bottom and is equipped with the inlet, cauldron body intermediate layer is close to the top and is equipped with the liquid outlet. The cooling liquid or the heating liquid can be introduced into the interlayer to cool or heat the reaction kettle so as to promote the reaction.
Further, the stirring part includes motor, (mixing) shaft and a set of stirring leaf, the motor links to each other with the mount is fixed, the output and the (mixing) shaft of motor are fixed continuous, the (mixing) shaft is worn to locate the kettle cover and is stretched to the cauldron internal, the stirring leaf is located the cauldron internal and is fixed continuous with the (mixing) shaft. The motor drives the stirring blades to stir the raw materials in the reaction kettle, so that the raw materials are fully reacted.
Furthermore, the condensing part comprises a condensing pipe, a return pipe and a collecting bottle, the return pipe is arranged between the condensing pipe and the collecting bottle, the free end of the return pipe extends into the kettle body, and the return pipe, the condensing pipe and the collecting bottle are connected through pipelines. Some volatile products or solvent can be followed condenser pipe and condensed, are collected by the receiving flask, and the gas that does not condense carries out the repeated condensation in the reation kettle from the back flow, avoids the product to spill over and leads to the waste.
Further, reation kettle still includes speed regulator and sealing washer, the speed regulator is located on the mount, the motor links to each other with the speed regulator electrical property, the sealing washer is located the kettle cover top, and the (mixing) shaft outside is located to the cover. The speed regulator conveniently adjusts the motor speed, and the sealing performance in the reation kettle can be strengthened to the sealing washer.
Further, the high-strength corrosion-resistant glass comprises the following components in parts by weight: 45-65 parts of silicon dioxide, 25-45 parts of borax, 1-3 parts of sodium nitrate, 1-5 parts of aluminum oxide, 5-10 parts of sodium fluosilicate and 70-80 parts of cullet. Silica is an important glass-forming oxide, and forms an irregular continuous structure with structural units of silicon-oxygen tetrahedron in the glass to form a framework of the glass, so that the thermal expansion coefficient of the glass can be reduced, and the thermal stability, the chemical stability, the softening temperature, the heat resistance, the hardness, the mechanical strength, the transparency and the viscosity of the glass can be improved. The borax introduces sodium oxide and boron oxide during melting, the boron oxide is volatile, the thermal expansion coefficient of the glass can be reduced, the thermal stability and the chemical stability of the glass are improved, the gloss of the glass is improved, the mechanical strength of the glass is improved, the viscosity of the glass can be reduced at high temperature, the viscosity of the glass is improved at low temperature, and the borax plays a role in fluxing. The alumina can improve the chemical stability of the glass, increase the mechanical strength, reduce the crystallization tendency of the glass, reduce the thermal expansion coefficient of the glass, improve the thermal stability of the glass and reduce the erosion of the glass melt to refractory materials. The sodium nitrate has lower melting point and decomposition temperature, is heated and decomposed into sodium oxide, nitrogen and oxygen, and the sodium oxide can form eutectic with silicon dioxide and simultaneously has strong oxidation and clarification effects, thereby accelerating the melting of glass. Sodium fluorosilicate is used as clarifying agent, cosolvent and opacifier. The adoption of the cullet can not only utilize wastes, but also accelerate the glass melting process and reduce the heat consumption of melting under the condition of reasonable use, thereby reducing the production cost of the glass and improving the yield.
A preparation method of a high-strength corrosion-resistant glass reaction kettle comprises the following preparation steps:
(1) weighing a certain weight part of cullet, grinding the cullet after crushing, and screening to keep particles with the diameter not more than 300 mu m;
(2) mixing silicon dioxide, borax, sodium nitrate, aluminum oxide and sodium fluosilicate in a weight ratio in a container, stirring to uniformly mix, adding the crushed glass powder prepared in the step (1) in a weight ratio, and uniformly mixing the crushed glass powder and the mixture to obtain a mixed raw material;
(3) melting the mixed raw materials prepared in the step (2) to form molten glass, and then processing the molten glass into a kettle body and a kettle cover with required specifications and shapes;
(4) and (4) carrying out heat treatment operation on the kettle body and the kettle cover obtained in the step (3), and then assembling the kettle body and the kettle cover with other components to obtain the high-strength corrosion-resistant glass reaction kettle.
Further, the melting temperature is 1650-1700 ℃.
Further, the heat treatment comprises the following two steps: and (3) preserving the heat of the product for 0.5-1 hour in a heat preservation furnace with the temperature of 300-450 ℃, then raising the temperature of the heat preservation furnace to 650-750 ℃, preserving the heat for 1-2 hours, carrying out micro crystallization treatment, and carrying out annealing cooling after the treatment to obtain the finished product. The microcrystallization treatment can further improve the strength of the glass.
Has the advantages that: compared with the prior art, the invention has the following advantages: the high-strength corrosion-resistant glass reaction kettle and the preparation method thereof provided by the invention have the advantages that the kettle body and the kettle cover of the high-strength corrosion-resistant glass reaction kettle are both made of high-strength corrosion-resistant glass, the high-strength corrosion-resistant glass has higher mechanical strength and better corrosion resistance, and also has higher viscosity and glossiness and good chemical properties, and the preparation method of the high-strength corrosion-resistant glass is simple and is suitable for large-scale industrial popularization and application.
Drawings
FIG. 1 is a structural diagram of a high-strength corrosion-resistant glass reaction kettle according to the present invention.
In the figure: 1 kettle body, 11 kettle covers, 111 feed inlets, 12 liquid inlets, 13 liquid outlets, 14 discharge outlets, 141 control valves, 2 fixing frames, 21 universal wheels, 211 brake pads, 3 stirring parts, 31 motors, 32 stirring shafts, 33 stirring blades, 4 constant-pressure hoppers, 5 condensing parts, 51 condensing pipes, 52 return pipes, 53 collecting bottles, 6 speed regulators and 7 sealing rings.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples.
As shown in fig. 1, a corrosion-resistant glass reation kettle of high strength, including the cauldron body 1, mount 2, stirring part 3, constant voltage funnel 4 and condensing part 5, cauldron body 1 is fixed in on mount 2, cauldron body 1 is double-deck intermediate layer, 1 intermediate layer of the cauldron body is close to the bottom and is equipped with inlet 12, 1 intermediate layer of the cauldron body is close to the top and is equipped with liquid outlet 13, 1 top of the cauldron body is equipped with kettle cover 11, be equipped with feed inlet 111 on the kettle cover 11, 1 bottom of the cauldron body is equipped with discharge gate 14, 14 departments of discharge gate are equipped with control valve 141, stirring part 3 and mount 2 are fixed continuous and partly wear to locate kettle cover 11 and stretch to the cauldron body 1 in, constant voltage funnel 4 and condensing part 5 are fixed continuous with kettle cover 11, cauldron body 1 and 11 are made by the corrosion-resistant glass of high strength.
Wherein, stirring part 3 includes motor 31, (mixing) shaft 32 and a set of stirring leaf 33, motor 31 links to each other with mount 2 is fixed, motor 31's output links to each other with (mixing) shaft 32 is fixed, the (mixing) shaft 32 is worn to locate kettle cover 11 and is stretched to the cauldron internal 1, stirring leaf 33 is located the cauldron internal 1 and is fixed continuous with (mixing) shaft 32.
In addition, the condensing part 5 comprises a condensing pipe 51, a return pipe 52 and a collecting bottle 53, the return pipe 52 is arranged between the condensing pipe 51 and the collecting bottle 53, the free end of the return pipe extends into the kettle body 1, and the return pipe 52, the condensing pipe 51 and the collecting bottle 53 are all connected through pipelines.
In addition, reation kettle still includes speed regulator 6 and sealing washer 7, speed regulator 6 is located on mount 2, motor 31 links to each other with speed regulator 6 electrical property, sealing washer 7 is located kettle cover 11 top, and the cover is located the (mixing) shaft 32 outside.
Example 1
The preparation method of the high-strength corrosion-resistant glass reaction kettle comprises the following preparation steps:
(1) weighing 70 parts of cullet, grinding the cullet after crushing, and screening to keep particles with the diameter not more than 300 mu m;
(2) taking 45 parts of silicon dioxide, 25 parts of borax, 1 part of sodium nitrate, 1 part of aluminum oxide and 5 parts of sodium fluosilicate, stirring in a container to uniformly mix, adding the glass cullet powder prepared in the step (1), and uniformly mixing the glass cullet powder with the mixture to obtain a mixed raw material;
(3) melting the mixed raw materials prepared in the step (2) to form molten glass, wherein the melting temperature is 1650 ℃, and then processing the molten glass into a kettle body 1 and a kettle cover 11 with required specifications and shapes;
(4) and (3) carrying out heat treatment operation on the kettle body 1 and the kettle cover 11 obtained in the step (3), wherein the heat treatment comprises the following two steps: and (3) preserving the temperature of the product in a 300 ℃ heat preservation furnace for 0.5 hour, then raising the temperature of the heat preservation furnace to 650 ℃, preserving the temperature for 1 hour, carrying out microcrystallization treatment, annealing and cooling after the treatment to obtain a finished product, and then assembling the finished product with other components to obtain the high-strength corrosion-resistant glass reaction kettle.
Example 2
The preparation method of the high-strength corrosion-resistant glass reaction kettle comprises the following preparation steps:
(1) weighing 80 parts of cullet, grinding the cullet after crushing, and screening to keep particles with the diameter not more than 300 mu m;
(2) taking 65 parts of silicon dioxide, 45 parts of borax, 3 parts of sodium nitrate, 5 parts of aluminum oxide and 10 parts of sodium fluosilicate, stirring in a container to uniformly mix, adding the glass cullet powder prepared in the step (1), and uniformly mixing the glass cullet powder with the mixture to obtain a mixed raw material;
(3) melting the mixed raw materials prepared in the step (2) to form molten glass, wherein the melting temperature is 1700 ℃, and then processing the molten glass into a kettle body 1 and a kettle cover 11 with required specifications and shapes;
(4) and (3) carrying out heat treatment operation on the kettle body 1 and the kettle cover 11 obtained in the step (3), wherein the heat treatment comprises the following two steps: and (3) preserving the temperature of the product in a heat preservation furnace at 450 ℃ for 1 hour, then raising the temperature of the heat preservation furnace to 750 ℃, preserving the heat for 2 hours, carrying out microcrystallization treatment, annealing and cooling after the treatment to obtain a finished product, and then assembling the finished product with other parts to obtain the high-strength corrosion-resistant glass reaction kettle.
Example 3
The preparation method of the high-strength corrosion-resistant glass reaction kettle comprises the following preparation steps:
(1) weighing 75 parts of cullet, grinding the cullet after crushing, and screening to keep particles with the diameter not more than 300 mu m;
(2) taking 55 parts of silicon dioxide, 35 parts of borax, 2 parts of sodium nitrate, 3 parts of aluminum oxide and 7 parts of sodium fluosilicate, stirring in a container to uniformly mix, adding the glass cullet powder prepared in the step (1), and uniformly mixing the glass cullet powder with the mixture to obtain a mixed raw material;
(3) melting the mixed raw materials prepared in the step (2) to form molten glass, wherein the melting temperature is 1675 ℃, and then processing the molten glass into a kettle body 1 and a kettle cover 11 with required specifications and shapes;
(4) and (3) carrying out heat treatment operation on the kettle body 1 and the kettle cover 11 obtained in the step (3), wherein the heat treatment comprises the following two steps: and (3) preserving the temperature of the product in a 380 ℃ heat preservation furnace for 0.7 hour, then raising the temperature of the heat preservation furnace to 700 ℃, preserving the temperature for 1.5 hours, carrying out microcrystallization treatment, annealing and cooling after the treatment to obtain a finished product, and then assembling the finished product with other components to obtain the high-strength corrosion-resistant glass reaction kettle.
Performance testing
In order to verify the corrosion resistance of the high-strength corrosion-resistant glass reaction kettle, a sample with the size specification of 10cm x 10cm is taken as a kettle body prepared in each embodiment for testing, the sample is put into an HF solution with the mass concentration of 10% at normal temperature for corrosion, and the corrosion rate is tested; and (3) carrying out physical property test on the test sample according to GB/T34843-2017. The experimental results are shown in table 1 below.
Table 1 results of performance testing
| Corrosion rate/g/m2.h | Flexural strength/MPa | Compressive strength/MPa | Impact toughness/kj/cm3 | |
| Example 1 | 0.45 | 52.1 | 398.6 | 4.51 |
| Example 2 | 0.18 | 54.8 | 440.8 | 4.68 |
| Example 3 | 0.29 | 52.9 | 320.5 | 4.57 |
From the results, the glass reaction kettle prepared by the method has higher mechanical strength and better corrosion resistance.
The foregoing is directed to embodiments of the present invention and, more particularly, to a method and apparatus for controlling a power converter in a power converter, including a power converter, a power converter.
Claims (9)
1. The utility model provides a corrosion-resistant glass reation kettle of high strength which characterized in that: including the cauldron body (1), mount (2), stirring part (3), constant voltage funnel (4) and condensing part (5), the cauldron body (1) is fixed in on mount (2), cauldron body (1) top is equipped with kettle cover (11), be equipped with feed inlet (111) on kettle cover (11), cauldron body (1) bottom is equipped with discharge gate (14), discharge gate (14) department is equipped with control valve (141), stirring part (3) and mount (2) are fixed continuous and the part is worn to locate kettle cover (11) and is stretched to cauldron body (1) in, constant voltage funnel (4) and condensing part (5) are fixed continuous with kettle cover (11), cauldron body (1) and kettle cover (11) are made by high strength corrosion-resistant glass.
2. The high strength corrosion resistant glass reactor of claim 1, wherein: the cauldron body (1) is double-deck intermediate layer, cauldron body (1) intermediate layer is close to the bottom and is equipped with inlet (12), cauldron body (1) intermediate layer is close to the top and is equipped with liquid outlet (13).
3. The high strength corrosion resistant glass reactor of claim 1, wherein: stirring part (3) include motor (31), (mixing) shaft (32) and a set of stirring leaf (33), motor (31) are fixed continuous with mount (2), the output and (mixing) shaft (32) of motor (31) are fixed continuous, (mixing) shaft (32) are worn to locate kettle cover (11) and are stretched into kettle body (1), stirring leaf (33) are located in kettle body (1) and are fixed continuous with (mixing) shaft (32).
4. The high strength corrosion resistant glass reactor of claim 1, wherein: the condensing part (5) comprises a condensing pipe (51), a return pipe (52) and a collecting bottle (53), wherein the return pipe (52) is arranged between the condensing pipe (51) and the collecting bottle (53), the free end of the return pipe extends into the kettle body (1), and the return pipe (52) is connected with the condensing pipe (51) and the collecting bottle (53) through pipelines.
5. A high strength corrosion resistant glass reactor according to claim 3, wherein: the reaction kettle further comprises a speed regulator (6) and a sealing ring (7), the speed regulator (6) is arranged on the fixing frame (2), the motor (31) is electrically connected with the speed regulator (6), the sealing ring (7) is arranged above the kettle cover (11), and the stirring shaft (32) is sleeved outside.
6. The high strength corrosion resistant glass reactor of claim 1, wherein: the high-strength corrosion-resistant glass comprises the following components in parts by weight: 45-65 parts of silicon dioxide, 25-45 parts of borax, 1-3 parts of sodium nitrate, 1-5 parts of aluminum oxide, 5-10 parts of sodium fluosilicate and 70-80 parts of cullet.
7. A method for preparing a high-strength corrosion-resistant glass reaction kettle according to claim 6, wherein the method comprises the following steps: the preparation method comprises the following preparation steps:
(1) weighing a certain weight part of cullet, grinding the cullet after crushing, and screening to keep particles with the diameter not more than 300 mu m;
(2) mixing silicon dioxide, borax, sodium nitrate, aluminum oxide and sodium fluosilicate in a weight ratio in a container, stirring to uniformly mix, adding the crushed glass powder prepared in the step (1) in a weight ratio, and uniformly mixing the crushed glass powder and the mixture to obtain a mixed raw material;
(3) melting the mixed raw materials prepared in the step (2) to form molten glass, and then processing the molten glass into a kettle body (1) and a kettle cover (11) with required specifications and shapes;
(4) and (4) carrying out heat treatment on the kettle body (1) and the kettle cover (11) obtained in the step (3), and then assembling the kettle body and other components to obtain the high-strength corrosion-resistant glass reaction kettle.
8. The method for preparing a high-strength corrosion-resistant glass reaction kettle according to claim 7, wherein the method comprises the following steps: the melting temperature is 1650-1700 ℃.
9. The method for preparing a high-strength corrosion-resistant glass reaction kettle according to claim 7, wherein the method comprises the following steps: the heat treatment comprises the following two steps: and (3) preserving the heat of the product for 0.5-1 hour in a heat preservation furnace with the temperature of 300-450 ℃, then raising the temperature of the heat preservation furnace to 650-750 ℃, preserving the heat for 1-2 hours, carrying out micro crystallization treatment, and carrying out annealing cooling after the treatment to obtain the finished product.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112546991A (en) * | 2020-11-19 | 2021-03-26 | 黄桂平 | Agitating unit of epoxy production reaction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413292A (en) * | 2017-09-15 | 2017-12-01 | 佛山市南海区昊森机械设备有限公司 | A kind of double-layer glass reaction kettle |
| CN209501687U (en) * | 2019-02-13 | 2019-10-18 | 连云港贵科药业有限公司 | A kind of double-layer glass reaction kettle collection device |
| CN212468074U (en) * | 2020-06-28 | 2021-02-05 | 苏州北开生化设备有限公司 | High-strength corrosion-resistant glass reaction kettle |
| CN112316873A (en) * | 2020-11-06 | 2021-02-05 | 中建材科创新技术研究院(山东)有限公司 | Double-layer glass reaction kettle for preparing aerogel sol |
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2020
- 2020-06-28 CN CN202010595639.4A patent/CN111589392A/en active Pending
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| CN107413292A (en) * | 2017-09-15 | 2017-12-01 | 佛山市南海区昊森机械设备有限公司 | A kind of double-layer glass reaction kettle |
| CN209501687U (en) * | 2019-02-13 | 2019-10-18 | 连云港贵科药业有限公司 | A kind of double-layer glass reaction kettle collection device |
| CN212468074U (en) * | 2020-06-28 | 2021-02-05 | 苏州北开生化设备有限公司 | High-strength corrosion-resistant glass reaction kettle |
| CN112316873A (en) * | 2020-11-06 | 2021-02-05 | 中建材科创新技术研究院(山东)有限公司 | Double-layer glass reaction kettle for preparing aerogel sol |
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| CN112546991A (en) * | 2020-11-19 | 2021-03-26 | 黄桂平 | Agitating unit of epoxy production reaction |
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