CN218210900U - Methylglyoxal oxidation reaction cooling device - Google Patents
Methylglyoxal oxidation reaction cooling device Download PDFInfo
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- CN218210900U CN218210900U CN202221724373.XU CN202221724373U CN218210900U CN 218210900 U CN218210900 U CN 218210900U CN 202221724373 U CN202221724373 U CN 202221724373U CN 218210900 U CN218210900 U CN 218210900U
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Abstract
The utility model provides a methylglyoxal oxidation reaction cooling device, which comprises an oxidation reaction kettle, a reaction section arranged at the upper section of the inner side of the oxidation reaction kettle and a cooling section arranged at the lower section of the inner side of the oxidation reaction kettle; a cooling tube nest is arranged in the cooling section and communicated with the reaction section; a feeding port is formed in the top of the oxidation reaction kettle and communicated with the reaction section; a first liquid material discharge port is formed in the bottom of the oxidation reaction kettle and communicated with the collecting box; the oxidation reaction cauldron outside sets up the fan, the air intake intercommunication of fan and cooling zone, set up the air outlet on the cooling zone, one side of oxidation reaction cauldron sets up first condenser, set up first gaseous material feed inlet on the first condenser, the utility model has the characteristics of structural design is reasonable, can fully collect reaction product to the heat utilizes abundant.
Description
Technical Field
The utility model relates to a pyruvaldehyde oxidation reaction cooling device belongs to chemical production technical field.
Background
Methylglyoxal is an aldehyde compound which is used as an intermediate of medicine and pesticide and a biochemical reagent and is an important raw material for preparing 4-methylimidazole; there are many methods for synthesizing methylglyoxal, including acetone method, propylene glycol method, glycerin catalytic dehydrogenation method, and hydroxyacetone gas-phase catalytic oxidation method. The propylene glycol method is characterized in that propylene glycol and water are gasified at high temperature, enter a reactor and are oxidized by a catalyst to become pyruvaldehyde gas, the gas temperature is 500 ℃, the boiling point of pyruvaldehyde is 72 ℃, and liquid pyruvaldehyde can be collected after condensation. In the past, a mode of directly condensing circulating water is adopted, and due to the fact that the temperature of condensed gas is too high, the circulating water is high in temperature and easy to generate scale to block a pipeline, the circulating water in a circulating water tank in summer is high in temperature, the cooling effect is poor, heat generated by reaction is not effectively recycled, and energy waste is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a structural design is reasonable, can fully collect reaction product to the abundant methylglyoxal oxidation reaction cooling device of heat utilization.
In order to solve the technical problem the utility model discloses the technical scheme who takes is:
a reaction cooling device for preparing methylglyoxal comprises an oxidation reaction kettle, a reaction section arranged at the upper section of the inner side of the oxidation reaction kettle and a cooling section arranged at the lower section of the inner side of the oxidation reaction kettle;
a cooling tube nest is arranged in the cooling section and communicated with the reaction section;
a feeding port is formed in the top of the oxidation reaction kettle and communicated with the reaction section;
a first liquid material discharge port is formed in the bottom of the oxidation reaction kettle and communicated with the collecting box;
the outer side of the oxidation reaction kettle is provided with a fan, the fan is communicated with an air inlet of the cooling section, and the cooling section is provided with an air outlet.
Further, a first condenser is arranged on one side of the oxidation reaction kettle, a first gaseous material feeding hole is formed in the first condenser, and the first gaseous material feeding hole is communicated with a cooling section of the oxidation reaction kettle;
a first circulating water inlet is formed in the lower side of the first condenser, and a first circulating water outlet is formed in the upper side of the first condenser;
a second gaseous material discharge hole is formed in the upper side of the first condenser;
and a second liquid material discharge port is arranged at the lower side of the first condenser and communicated with the collecting box.
Further, a second condenser is arranged on the other side, opposite to the oxidation reaction kettle, of the first condenser, a second gaseous material feeding hole is formed in the second condenser, and the second gaseous material feeding hole is communicated with a second gaseous material discharging hole;
a second circulating water inlet is formed in the lower side of the second condenser, a second circulating water outlet is formed in the upper side of the second condenser, and the second circulating water outlet is communicated with the first circulating water inlet;
a third liquid material discharge port is formed in the lower side of the second condenser and communicated with the collecting box;
and a third gaseous material discharge port is formed in the upper side of the second condenser.
Furthermore, the first circulating water outlet is communicated with a circulating water pool.
Further, the second circulating water inlet is communicated with a circulating water pool.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the utility model discloses an add the fan, utilize and produce the heat exchange between the methylglyoxal of outside air and gaseous state, carry out preliminary cooling to the methylglyoxal of gaseous state, the condensation becomes liquid methylglyoxal and directly collects and collects in the collection incasement, the methylglyoxal of the gaseous state of noncondensation continues to get into and condenses in the condenser of back way, utilize the circulating water to cool down the condensation to the methylglyoxal of gaseous state again in the condenser, liquid methylglyoxal after the condensation is directly collected, the gaseous methylglyoxal is through utilizing circulating water condensation process together again, condense, the liquid methylglyoxal of making directly collects, remaining gas is collected in addition, the utility model discloses a mode of three condensations, first adopt to carry out the heat exchange between outside air and the high temperature methylglyoxal gas, avoid adopting the temperature that the circulating water cooling leads to too high, produce the water scaling, block up the problem of pipeline, and the air after the heat exchange can supply other workshops to dry and use, can also be used as the heating winter.
The utility model discloses a set up twice condensation process at the oxidation reaction cauldron back, adopt the mode of circulating water condensation, to the abundant condensation of gaseous state acetone aldehyde, collect abundant.
Drawings
FIG. 1 is a schematic view of the present invention;
wherein, 1, oxidation reaction kettle, 2, reaction section, 3, cooling tubulation, 4, first condenser, 5, second condenser, 6, second circulating water import, 7, second circulating water export, 8, first circulating water import, 9, first circulating water export, 10, the air outlet, 11, the air intake, 12, the pan feeding mouth, 13, first gaseous material feed inlet, 14, first liquid material discharge gate, 15, the collecting box, 16, second gaseous material discharge gate, 17, second gaseous material feed inlet, 18, second liquid material discharge gate, 19, third gaseous material discharge gate, 20, third liquid material discharge gate, 21, cooling section, 22, the fan.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, this embodiment provides a reaction cooling device for preparing methylglyoxal, which includes an oxidation reaction kettle 1, a reaction section 2 disposed at an upper section inside the oxidation reaction kettle 1, and a cooling section 21 disposed at a lower section inside the oxidation reaction kettle 1; a one-way valve or a valve is arranged on a pipeline as required to control the flow direction of the pipeline, a feeding port 12 is arranged at the top of the oxidation reaction kettle 1, the feeding port 12 is communicated with the reaction section 2, a cooling tube array 3 is arranged in the cooling section, the cooling tube array 3 is communicated with the reaction section 2, a first liquid material discharging port 14 is arranged at the bottom of the oxidation reaction kettle 1, and the first liquid material discharging port 14 is communicated with a collecting box 15; propylene glycol and water are gasified at high temperature, enter the reaction section 2 from the feed inlet 12 and are oxidized by a catalyst to become methylglyoxal gas, the methylglyoxal gas temperature reaches 500 ℃, the methylglyoxal gas enters the cooling tube 3 to be subjected to heat exchange and cooling, a fan 22 is arranged on the outer side of the oxidation reaction kettle 1, the fan 22 is communicated with an air inlet 11 of the cooling section 21, an air outlet 10 is arranged on the cooling section 21, the air outlet 10 can be connected with a drying pipeline of other workshops or connected with a heating pipeline as required, the methylglyoxal gas passes through the cooling tube 3, air passes through the outer side of the cooling tube 3, the methylglyoxal gas and the air are subjected to heat exchange through the cooling tube 3 to realize the first cooling of the methylglyoxal gas, liquid methylglyoxal that the condensation goes out, flow out in the first liquid material discharge gate 14 that sets up from oxidation reaction kettle 1 bottom, and collect collection box 15, the utility model discloses utilize and produce the heat exchange between the methylglyoxal of outside air and gaseous state, carry out preliminary cooling to the methylglyoxal of gaseous state, the condensation becomes liquid methylglyoxal and directly collects in collection box 15, the methylglyoxal of the gaseous state of noncondensation continues to carry out the condensation in getting into the condenser of back way, first adopt and carry out the heat exchange between outside air and the high temperature methylglyoxal gas, avoid directly adopting the temperature that circulating water cooling leads to too high, produce the water spot, block up the problem of pipeline, and the air after the heat exchange can supply other workshops to dry and use, can also be used as the usefulness of heating winter.
One side of oxidation reation kettle 1 sets up first condenser 4, set up first gaseous material feed inlet 13 on the first condenser 4, first gaseous material feed inlet 13 and oxidation reation kettle 1's cooling zone intercommunication, first condenser 4 downside sets up first circulating water import 8, the upside of first condenser 4 sets up first circulating water export 9, first condenser 4 upside sets up second gaseous material discharge gate 16, first condenser 4 downside sets up second liquid material discharge gate 18, second liquid material discharge gate 18 and collecting box 15 intercommunication, and the gaseous back of coming out from the cooling zone of the methylglyoxal of coming out in oxidation reation kettle 1, in getting into first condenser 4 through first gaseous material feed inlet 13, after with circulating water cooling heat transfer, the liquid methylglyoxal of condensation gets into in collecting box 15 through second liquid material discharge gate 18 and collects.
The other side of the first condenser 4, which is opposite to the oxidation reaction kettle 1, is provided with a second condenser 5, the lower side of the second condenser 5 is provided with a second circulating water inlet 6, the upper side of the second condenser 5 is provided with a second circulating water outlet 7, the second circulating water outlet 7 is communicated with a first circulating water inlet 8, the lower side of the second condenser 5 is provided with a third liquid material discharge port 20, the third liquid material discharge port 20 is communicated with a collection box 15, the second condenser 5 is provided with a second gaseous material feed port 17, the second gaseous material feed port 17 is communicated with a second gaseous material discharge port 16, gaseous methylglyoxal which comes out from the first condenser enters the second condenser 5 from the second gaseous material discharge port 16 after coming out, exchanges heat with circulating water in the second condenser 5, the condensed liquid methylglyoxal comes out from the third liquid material discharge port 20 and then enters the collection box 15 for collection, the upper side of the second condenser 5 is provided with a third gaseous material discharge port 19, a two-stage settling tower is arranged behind the second condenser, the condensed gaseous material discharge port 19 is further cooled from the third liquid material discharge port 19, the first circulating water inlet is communicated with a circulating water tank 9, and the circulating water tank is communicated with the circulating water tank 6.
The specific using working process is as follows:
the propylene glycol and the water are gasified at high temperature, enter the reaction section 2 from the material inlet 12 and are oxidized by the catalyst to become methylglyoxal gas, the methylglyoxal gas has the temperature of 500 ℃, the methylglyoxal gas enters the cooling tube array 3 for heat exchange and cooling, the methylglyoxal gas passes through the cooling tube array 3, air passes through the outside of the cooling tube array 3, the methylglyoxal gas and the air exchange heat through the cooling tube array 3 to realize the first cooling of the methylglyoxal gas, the condensed liquid methylglyoxal flows out from a first liquid material outlet 14 arranged at the bottom of the oxidation reaction kettle 1 and is collected in a collection box 15, the methylglyoxal gas coming out of the oxidation reaction kettle 1 enters a first condenser 4 through a first gaseous material inlet 13 after coming out of the cooling section, the condensed liquid methylglyoxal enters the collection box 15 through a second liquid material outlet 18 after being cooled and heat exchanged with circulating water for heat exchange, gaseous methylglyoxal coming out from the first condenser comes out from the second gaseous material discharge port 16, then enters the second condenser 5 from the second gaseous material feed port 17, and exchanges heat with circulating water in the second condenser 5, and condensed liquid methylglyoxal comes out from the third liquid material discharge port 20 and then enters the collection box 15 for collection, the utility model adopts the first heat exchange between outside air and high-temperature methylglyoxal gas to avoid the problems of high water temperature, scale and pipeline blockage caused by directly adopting circulating water cooling, and the air after heat exchange can be dried and used in other workshops, and can be used for heating in winter, and two condensation processes are arranged in the later process, and the gaseous methylglyoxal is fully condensed by adopting a circulating condensation water cooling mode, and collecting fully.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The device for cooling the methylglyoxal oxidation reaction is characterized by comprising an oxidation reaction kettle (1), a reaction section (2) arranged at the upper section of the inner side of the oxidation reaction kettle (1) and a cooling section (21) arranged at the lower section of the inner side of the oxidation reaction kettle (1);
a cooling tube nest (3) is arranged in the cooling section, and the cooling tube nest (3) is communicated with the reaction section (2);
a feeding port (12) is formed in the top of the oxidation reaction kettle (1), and the feeding port (12) is communicated with the reaction section (2);
a first liquid material discharge port (14) is formed in the bottom of the oxidation reaction kettle (1), and the first liquid material discharge port (14) is communicated with a collection box (15);
the oxidation reaction kettle (1) is characterized in that a fan (22) is arranged on the outer side of the oxidation reaction kettle (1), the fan (22) is communicated with an air inlet (11) of a cooling section (21), and an air outlet (10) is formed in the cooling section (21).
2. The methylglyoxal oxidation reaction cooling device of claim 1, wherein a first condenser (4) is arranged at one side of the oxidation reaction kettle (1), a first gaseous material feeding port (13) is arranged on the first condenser (4), and the first gaseous material feeding port (13) is communicated with the cooling section of the oxidation reaction kettle (1);
a first circulating water inlet (8) is formed in the lower side of the first condenser (4), and a first circulating water outlet (9) is formed in the upper side of the first condenser (4);
a second gaseous material discharge hole (16) is formed in the upper side of the first condenser (4);
and a second liquid material discharge port (18) is formed in the lower side of the first condenser (4), and the second liquid material discharge port (18) is communicated with the collecting box (15).
3. The methylglyoxal oxidation reaction cooling device according to claim 2, wherein said first condenser (4) is provided with a second condenser (5) on the other side opposite to the oxidation reaction kettle (1), said second condenser (5) is provided with a second gaseous material inlet (17), said second gaseous material inlet (17) is communicated with a second gaseous material outlet (16);
a second circulating water inlet (6) is formed in the lower side of the second condenser (5), a second circulating water outlet (7) is formed in the upper side of the second condenser (5), and the second circulating water outlet (7) is communicated with the first circulating water inlet (8);
a third liquid material discharge hole (20) is formed in the lower side of the second condenser (5), and the third liquid material discharge hole (20) is communicated with the collecting box (15);
and a third gaseous material discharge hole (19) is formed in the upper side of the second condenser (5).
4. The device for cooling the methylglyoxal oxidation reaction of claim 3, wherein said first circulating water outlet (9) is in communication with a circulating water reservoir.
5. The device for cooling the methylglyoxal oxidation reaction of claim 3, wherein said second circulating water inlet (6) is in communication with a circulating water reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221724373.XU CN218210900U (en) | 2022-07-06 | 2022-07-06 | Methylglyoxal oxidation reaction cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221724373.XU CN218210900U (en) | 2022-07-06 | 2022-07-06 | Methylglyoxal oxidation reaction cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218210900U true CN218210900U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221724373.XU Active CN218210900U (en) | 2022-07-06 | 2022-07-06 | Methylglyoxal oxidation reaction cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218210900U (en) |
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2022
- 2022-07-06 CN CN202221724373.XU patent/CN218210900U/en active Active
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