阅读说明：本技术 一种隧道自然排烟竖井蓄烟装置 (Tunnel natural smoke discharging vertical shaft smoke storage device ) 是由 郭志明 徐志胜 周畅 陈研 王宏翔 于天 颜龙 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种隧道自然排烟竖井蓄烟装置,包括：排烟竖井和蓄烟池,所述蓄烟池设置在所述排烟竖井下方,且所述蓄烟池与所述排烟竖井相连通,所述蓄烟池的底面敞口且与隧道主体相对接；所述蓄烟池的高度为0.4m-0.6m,所述蓄烟池在隧道宽度方向上的尺寸小于或者等于隧道宽度的0.8倍。通过在排烟竖井下方增加蓄烟池,使得当烟气进入蓄烟池后会先被聚集,再从蓄烟池排入排烟竖井中,从而减弱空气卷吸效应,提高排烟竖井排出烟气的浓度,从而提高排烟竖井排烟效率。(The invention discloses a tunnel natural smoke discharging vertical shaft smoke storage device, which comprises: the smoke storage pool is arranged below the smoke exhaust vertical shaft, is communicated with the smoke exhaust vertical shaft, and has an open bottom surface which is in butt joint with the tunnel body; the height of the smoke storage pool is 0.4m-0.6m, and the size of the smoke storage pool in the width direction of the tunnel is less than or equal to 0.8 time of the width of the tunnel. Through increasing the smoke storage pool below the vertical shaft of discharging fume for can be gathered earlier after the flue gas gets into the smoke storage pool, discharge into the shaft of discharging fume from the smoke storage pool again, thereby weaken the air entrainment effect, improve the concentration of the shaft of discharging fume exhaust fume, thereby improve the shaft of discharging fume exhaust fume efficiency.)

1. The utility model provides a tunnel natural smoke discharging shaft holds cigarette device which characterized in that, the device includes: the smoke exhaust system comprises a smoke exhaust vertical shaft (1) and a smoke storage pool (2), wherein the smoke storage pool (2) is arranged below the smoke exhaust vertical shaft (1), the smoke storage pool (2) is communicated with the smoke exhaust vertical shaft (1), and the bottom surface of the smoke storage pool (2) is open and is butted with a tunnel main body (3);

the height of the smoke storage pool (2) is 0.4-0.6 m, and the size of the smoke storage pool (2) in the width direction of the tunnel is less than or equal to 0.8 time of the width of the tunnel.

2. The tunnel natural smoke evacuation shaft smoke storage device according to claim 1, wherein the horizontal cross-sectional shapes of the smoke evacuation shaft (1) and the smoke storage pool (2) are rectangular or circular or regular polygon or ellipse;

if the horizontal cross sections of the smoke exhaust vertical shaft (1) and the smoke storage pool (2) are rectangular, the length and the width of the horizontal cross section of the smoke storage pool (2) are respectively 2.5-3.5 times of the length and the width of the horizontal cross section of the smoke exhaust vertical shaft (1);

if the horizontal cross section of the smoke exhaust vertical shaft (1) and the smoke storage pool (2) is circular, the diameter of the horizontal cross section of the smoke storage pool (2) is 2.5-3.5 times that of the smoke exhaust vertical shaft (1);

if the horizontal cross section of the smoke exhaust vertical shaft (1) and the smoke storage pool (2) is in a regular polygon or ellipse shape, the length of a certain size on the horizontal cross section of the smoke storage pool (2) is 2.5-3.5 times of the length of the corresponding size of the horizontal cross section of the smoke exhaust vertical shaft (1).

3. The tunnel natural smoke evacuation shaft smoke storage device according to claim 2, wherein a trapezoid transition structure (4) or an arc transition structure (5) is further arranged between the smoke evacuation shaft (1) and the smoke storage pool (2);

if a trapezoid transition structure (4) is arranged between the smoke exhaust vertical shaft (1) and the smoke storage pool (2), the included angle between the inclined plane of the trapezoid transition structure (4) and the vertical direction is 30-60 degrees.

4. The tunnel natural smoke evacuation shaft smoke storage device according to claim 2, wherein the horizontal cross-sectional shape of the smoke evacuation shaft (1) and the smoke storage pool (2) is the same, and the geometric center lines of the horizontal cross-sections of the smoke evacuation shaft (1) and the smoke storage pool (2) are vertically coincident.

5. The tunnel natural smoke evacuation shaft smoke storage device according to any one of claims 1 to 4, wherein the inner wall surface of the smoke evacuation shaft (1) and the inner and outer wall surfaces of the smoke storage pool (2) are both sprayed with a fireproof coating, and the fireproof coating comprises the following components: 20-30% of ammonium polyphosphate, 5-15% of pentaerythritol, 5-15% of melamine, 2-8% of melamine borate, 20-30% of silicone-acrylic emulsion, 0.5-3% of film-forming assistant and the balance of deionized water.

6. The tunnel natural smoke evacuation shaft smoke storage device according to claim 5, wherein the fire retardant coating comprises the following components: 25% of ammonium polyphosphate, 10% of pentaerythritol, 10% of melamine, 5% of melamine borate, 25% of silicone-acrylic emulsion, 1% of film-forming assistant and the balance of deionized water.

7. The smoke storage device for the tunnel natural smoke exhaust shaft according to claim 5, wherein the preparation method of the fireproof coating comprises the following steps:

firstly, weighing ammonium polyphosphate, pentaerythritol, melamine and melamine borate in predetermined parts by mass, adding into a stirring container, adding deionized water in predetermined parts by mass, and uniformly stirring;

then, the mixture is put into a sanding and dispersing multipurpose machine and stirred at a high speed of 700r/min-1500r/min for 15min-30min to obtain a continuous raindrop-shaped expansion flame-retardant system;

and finally, adding the silicone-acrylic emulsion and the film-forming assistant in predetermined parts by mass into the expansion flame-retardant system, uniformly stirring, putting into a sanding and dispersing multipurpose machine, and stirring at a low speed of 300r/min-800r/min for 15min-30min to obtain the fireproof coating.

8. The smoke storage device for the tunnel natural smoke exhaust shaft according to claim 6, wherein the preparation method of the fireproof coating comprises the following steps:

firstly, weighing 25% of ammonium polyphosphate, 10% of pentaerythritol, 10% of melamine and 5% of melamine borate in parts by mass, adding the materials into a stirring container, adding 24% of deionized water, and uniformly stirring;

then, putting the mixture into a sanding and dispersing multipurpose machine, and stirring at a high speed of 1000r/min for 20min to obtain a continuous raindrop-shaped expansion flame-retardant system;

and finally, adding 25 mass percent of silicone-acrylic emulsion and 1 mass percent of film-forming assistant into the expansion flame-retardant system, uniformly stirring, and then putting the mixture into a sand grinding and dispersing multipurpose machine to stir at a low speed of 500r/min for 20min to obtain the fireproof coating.

9. The tunnel natural smoke evacuation shaft smoke storage device according to claim 5, wherein the chemical equation for synthesizing the melamine borate is as follows:

10. the tunnel natural smoke evacuation shaft smoke storage device according to claim 9, wherein the method for synthesizing the melamine borate comprises the following steps:

firstly, weighing 250mL of absolute ethyl alcohol, placing the absolute ethyl alcohol in a beaker, weighing 24.8g of boric acid, slowly adding the boric acid into the absolute ethyl alcohol, uniformly stirring, pouring the boric acid into a 500mL three-neck flask with a thermometer, a stirrer and a reflux device after the boric acid is dissolved in the absolute ethyl alcohol, and gradually increasing the temperature to 80 ℃;

then, 50.4g of melamine is dissolved in 200mL of absolute ethyl alcohol, slowly dropped into a three-neck flask, and reacted for 4 hours at the temperature of 80 ℃;

and finally, filtering and washing the obtained reaction product, and drying the obtained product in a drying oven at 65 ℃ until the quality is constant to obtain a white product, namely melamine borate.

Technical Field

The invention relates to the technical field of tunnel safety facilities, in particular to a smoke storage device of a tunnel natural smoke discharging vertical shaft.

Background

At present, mechanical ventilation smoke exhaust and vertical shaft natural smoke exhaust are mainly adopted in tunnels at home and abroad to exhaust smoke generated in fire. Compared with mechanical ventilation and smoke exhaust, the vertical shaft has low construction cost of natural smoke exhaust, does not consume energy and does not generate noise, thereby being widely applied. The shaft natural smoke evacuation utilizes the chimney effect generated by high temperature in fire to evacuate smoke, but is limited in height and cross-sectional area and can provide limited suction force. In addition, because the inertia force of the longitudinal extension of the smoke is large, the smoke cannot be effectively gathered below the vertical shaft, so that a large amount of cold air can be discharged while the smoke is discharged by the vertical shaft, and the natural smoke discharging efficiency of the vertical shaft is further reduced. Therefore, the increase of the suction force of the shaft or the concentration degree of the smoke below the smoke exhaust shaft is very important for improving the smoke exhaust efficiency of the shaft.

The traditional natural smoke exhaust of the tunnel shaft generally improves the smoke exhaust efficiency of the shaft by increasing the cross section area of the shaft or heightening the shaft, but the methods have some defects, such as: (1) the cross section area of the vertical shaft is limited by the width of the tunnel, and the vertical shaft with larger cross section area can not be used for smoke exhaust in the tunnel with smaller width; (2) the height of the vertical shaft is limited by the buried depth of the tunnel, and the vertical shaft with larger height cannot be used for smoke discharge in the tunnel with shallower buried depth; (3) the construction cost is high by increasing the height of the vertical shaft and the cross section area of the vertical shaft, and certain influence is generated on the tunnel structure; (4) when the height and the cross-sectional area of the vertical shaft are increased, the amount of air sucked by the vertical shaft during smoke removal is also increased, so that the cost performance for improving smoke exhaust efficiency is not high.

Therefore, in order to overcome the defects of the existing tunnel smoke exhaust structure, the invention provides a smoke exhaust device which can reduce air entrainment, improve the concentration of smoke discharged from a shaft and has good fire resistance, and the invention is a problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention provides a smoke storage device for a tunnel natural smoke discharging vertical shaft, which is characterized in that a smoke storage pool structure is added below the tunnel natural smoke discharging vertical shaft, smoke is firstly gathered after entering the smoke storage structure and then discharged into the smoke discharging vertical shaft from the smoke storage structure, so that air entrainment is weakened, the concentration of the smoke discharged from the vertical shaft is improved, and the smoke discharging efficiency of the vertical shaft is improved; the natural smoke discharging and storing device for the tunnel shaft has the advantages of low construction cost, strong reliability and small influence on the tunnel structure, and can effectively improve the smoke discharging efficiency of natural smoke discharging of the shaft. In order to solve the above problems, the technical solution provided by the present invention is as follows:

the invention relates to a smoke storage device for a tunnel natural smoke discharging vertical shaft, which comprises: the smoke storage pool is arranged below the smoke exhaust vertical shaft, is communicated with the smoke exhaust vertical shaft, and has an open bottom surface which is in butt joint with the tunnel body; the height of the smoke storage pool is 0.4m-0.6m, and the size of the smoke storage pool in the width direction of the tunnel is less than or equal to 0.8 time of the width of the tunnel. Therefore, the smoke storage pool is additionally arranged below the smoke exhaust shaft, smoke can be gathered firstly after entering the smoke storage pool and then is exhausted into the smoke exhaust shaft from the smoke storage pool, air entrainment is weakened, the concentration of the smoke exhausted by the smoke exhaust shaft is improved, and the smoke exhaust efficiency of the smoke exhaust shaft is improved.

Further, the horizontal cross section shapes of the smoke exhaust vertical shaft and the smoke storage pool are rectangular or circular or regular polygon or oval. If the horizontal cross sections of the smoke exhaust vertical shaft and the smoke storage pool are rectangular, the length and the width of the horizontal cross section of the smoke storage pool are respectively 2.5-3.5 times of the length and the width of the horizontal cross section of the smoke exhaust vertical shaft; if the horizontal cross sections of the smoke exhaust vertical shaft and the smoke storage pool are circular, the diameter of the horizontal cross section of the smoke storage pool is 2.5-3.5 times that of the horizontal cross section of the smoke exhaust vertical shaft; if the horizontal cross sections of the smoke exhaust vertical shaft and the smoke storage pool are in the shape of a regular polygon or an ellipse, the length of a certain size on the horizontal cross section of the smoke storage pool is 2.5-3.5 times of the length of the corresponding size of the horizontal cross section of the smoke exhaust vertical shaft, for example, the length of the corresponding side when the smoke exhaust vertical shaft is in the shape of a regular polygon is the length of the corresponding major axis when the smoke exhaust vertical shaft is in the shape of an ellipse.

Furthermore, a trapezoidal transition structure or an arc transition structure is arranged between the smoke exhaust vertical shaft and the smoke storage pool; if a trapezoid transition structure is arranged between the smoke exhaust vertical shaft and the smoke storage pool, the included angle between the inclined plane of the trapezoid transition structure and the vertical direction is 30-60 degrees.

Furthermore, the horizontal cross section shapes of the smoke exhaust vertical shaft and the smoke storage pool are the same, and the geometric center lines of the horizontal cross sections of the smoke exhaust vertical shaft and the smoke storage pool are overlapped in the vertical direction. For example, when the horizontal cross sections of the smoke exhaust vertical shaft and the smoke storage pool are both circular, the smoke exhaust vertical shaft and the smoke storage pool are coaxially arranged; when the horizontal cross sections of the smoke exhaust vertical shaft and the smoke storage pool are both square, the central lines of the squares of the smoke exhaust vertical shaft and the smoke storage pool are superposed.

Further, fireproof coatings are sprayed on the inner wall surface of the smoke exhaust shaft and the inner and outer wall surfaces of the smoke storage pool, and the fireproof coatings comprise the following components: 20-30% of ammonium polyphosphate, 5-15% of pentaerythritol, 5-15% of melamine, 2-8% of melamine borate, 20-30% of silicone-acrylic emulsion, 0.5-3% of film-forming assistant and the balance of deionized water. By spraying the fireproof coating, the fire resistance time of the inner wall surface of the smoke exhaust shaft and the inner and outer wall surfaces of the smoke storage pool can be prolonged, so that the reliability in the smoke exhaust shaft and the smoke storage pool in case of fire is improved.

Further, the fireproof coating comprises the following components: 25% of ammonium polyphosphate, 10% of pentaerythritol, 10% of melamine, 5% of melamine borate, 25% of silicone-acrylic emulsion, 1% of film-forming assistant and the balance of deionized water.

Further, the preparation method of the fireproof coating comprises the following steps:

firstly, weighing ammonium polyphosphate, pentaerythritol, melamine and melamine borate in predetermined parts by mass, adding into a stirring container, adding deionized water in predetermined parts by mass, and uniformly stirring;

then, the mixture is put into a sanding and dispersing multipurpose machine and stirred at a high speed of 700r/min-1500r/min for 15min-30min to obtain a continuous raindrop-shaped expansion flame-retardant system;

and finally, adding the silicone-acrylic emulsion and the film-forming assistant in predetermined parts by mass into the expansion flame-retardant system, uniformly stirring, putting into a sanding and dispersing multipurpose machine, and stirring at a low speed of 300r/min-800r/min for 15min-30min to obtain the fireproof coating.

Further, the preparation method of the fireproof coating comprises the following steps:

firstly, weighing 25% of ammonium polyphosphate, 10% of pentaerythritol, 10% of melamine and 5% of melamine borate in parts by mass, adding the materials into a stirring container, adding 24% of deionized water, and uniformly stirring;

then, putting the mixture into a sanding and dispersing multipurpose machine, and stirring at a high speed of 1000r/min for 20min to obtain a continuous raindrop-shaped expansion flame-retardant system;

and finally, adding 25 mass percent of silicone-acrylic emulsion and 1 mass percent of film-forming assistant into the expansion flame-retardant system, uniformly stirring, and then putting the mixture into a sand grinding and dispersing multipurpose machine to stir at a low speed of 500r/min for 20min to obtain the fireproof coating.

Further, the chemical equation for synthesizing the melamine borate is as follows:

further, the method for synthesizing the melamine borate comprises the following steps:

firstly, weighing 250mL of absolute ethyl alcohol, placing the absolute ethyl alcohol in a beaker, weighing 24.8g of boric acid, slowly adding the boric acid into the absolute ethyl alcohol, uniformly stirring, pouring the boric acid into a 500mL three-neck flask with a thermometer, a stirrer and a reflux device after the boric acid is dissolved in the absolute ethyl alcohol, and gradually increasing the temperature to 80 ℃;

then, 50.4g of melamine is dissolved in 200mL of absolute ethyl alcohol, slowly dropped into a three-neck flask, and reacted for 4 hours at the temperature of 80 ℃;

and finally, filtering and washing the obtained reaction product, and drying the obtained product in a drying oven at 65 ℃ until the quality is constant to obtain a white product, namely melamine borate.

The smoke storage device for the tunnel natural smoke discharging vertical shaft provided by the invention has the beneficial effects that:

through increasing the smoke storage pool below the vertical shaft of discharging fume for can be gathered earlier after the flue gas gets into the smoke storage pool, discharge into the shaft of discharging fume from the smoke storage pool again, thereby weaken the air entrainment, improve the concentration of the shaft of discharging fume exhaust fume, thereby improve the shaft of discharging fume exhaust fume efficiency.

The fireproof coating is sprayed on the inner wall surface of the smoke exhaust shaft and the inner and outer wall surfaces of the smoke storage pool, so that the fireproof time of the inner wall surface of the smoke exhaust shaft and the inner and outer wall surfaces of the smoke storage pool can be prolonged, and the reliability in the smoke exhaust shaft and the smoke storage pool in case of fire is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a smoke storage device of a tunnel natural smoke evacuation shaft according to an embodiment of the present invention, in order to clearly show the relationship between the structures, the drawings are drawn by solid lines, and lines partially blocked in an actual observation direction are also shown in the drawings;

FIG. 2 is a schematic longitudinal sectional view of the apparatus of the present invention with a trapezoidal transition structure between the smoke evacuation shaft and the smoke reservoir;

FIG. 3 is a schematic longitudinal cross-sectional view of the apparatus of the present invention with an arcuate transition structure between the smoke evacuation shaft and the smoke reservoir;

FIG. 4 is a temperature distribution cloud chart of the invention obtained by fluid dynamics software simulation when a smoke discharging vertical shaft without a smoke storage pool discharges smoke;

FIG. 5 is a cloud chart of temperature distribution when a smoke discharging vertical shaft provided with a smoke storage pool discharges smoke, which is obtained through fluid dynamics software simulation;

FIG. 6 is a schematic view showing the process of forming an expanded carbon layer during combustion of the fireproof paint sprayed on the inner wall surface of the smoke evacuation shaft and the inner and outer wall surfaces of the smoke storage tank according to the present invention.

Detailed Description

In order to make the technical solutions in the embodiments of the present invention better understood and make the above objects, features, and advantages of the present invention more comprehensible, specific embodiments of the present invention are described below with reference to the accompanying drawings.

It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 6, a smoke storage device for a tunnel natural smoke discharging shaft of the present embodiment includes: the device comprises a smoke exhaust vertical shaft 1 and a smoke storage pool 2, wherein the smoke storage pool 2 is arranged below the smoke exhaust vertical shaft 1, the smoke storage pool 2 is communicated with the smoke exhaust vertical shaft 1, and the bottom surface of the smoke storage pool 2 is open and is butted with a tunnel main body 3; the height of the smoke storage pool 2 is 0.4m-0.6m, and the size of the smoke storage pool 2 in the width direction of the tunnel is less than or equal to 0.8 time of the width of the tunnel. In a preferred embodiment, the horizontal cross-sectional shapes of the smoke exhaust shaft 1 and the smoke storage pool 2 are the same, and the geometric center lines of the horizontal cross-sections of the smoke exhaust shaft 1 and the smoke storage pool 2 are coincident in the vertical direction, for example, the horizontal cross-sectional shapes of the smoke exhaust shaft 1 and the smoke storage pool 2 are both rectangular, regular polygon or circular.

As a more preferable embodiment, the horizontal cross-sectional shapes of the smoke evacuation shaft 1 and the smoke reservoir 2 are rectangular or circular or regular polygon or oval; if the horizontal cross sections of the smoke exhaust vertical shaft 1 and the smoke storage pool 2 are rectangular, the length and the width of the horizontal cross section of the smoke storage pool 2 are respectively 2.5-3.5 times of the length and the width of the horizontal cross section of the smoke exhaust vertical shaft 1; if the horizontal cross sections of the smoke exhaust vertical shaft 1 and the smoke storage pool 2 are circular, the diameter of the horizontal cross section of the smoke storage pool 2 is 2.5-3.5 times that of the horizontal cross section of the smoke exhaust vertical shaft 1; if the horizontal cross sections of the smoke exhaust vertical shaft 1 and the smoke storage pool 2 are regular polygons or ellipses, the length of a certain size on the horizontal cross section of the smoke storage pool 2 is 2.5-3.5 times of the length of the corresponding size of the horizontal cross section of the smoke exhaust vertical shaft 1, such as the side length of a regular polygon and the major and minor axes of an ellipse.

Referring to fig. 2 and 3 in particular, a trapezoidal transition structure 4 or an arc transition structure 5 is further arranged between the smoke exhaust vertical shaft 1 and the smoke storage pool 2; if a trapezoidal transition structure 4 is arranged between the smoke exhaust vertical shaft 1 and the smoke storage pool 2, the included angle between the inclined plane of the trapezoidal transition structure 4 and the vertical direction is 30-60 degrees.

As a further preferable embodiment, the fire-proof paint is sprayed on the inner wall surface of the smoke exhaust shaft 1 and the inner and outer wall surfaces of the smoke storage pool 2, and the fire-proof paint comprises the following components: 20-30% of ammonium polyphosphate, 5-15% of pentaerythritol, 5-15% of melamine, 2-8% of melamine borate, 20-30% of silicone-acrylic emulsion, 0.5-3% of film-forming assistant and the balance of deionized water. Preferably, the fire retardant coating comprises the following components: 25% of ammonium polyphosphate, 10% of pentaerythritol, 10% of melamine, 5% of melamine borate, 25% of silicone-acrylic emulsion, 1% of film-forming assistant and the balance of deionized water. Fig. 6 shows the process of forming an expanded carbon layer during combustion by spraying fire-retardant coating on the inner wall surface of the smoke exhaust shaft and the inner and outer wall surfaces of the smoke storage pool.

The preparation method of the fireproof coating comprises the following steps: firstly, weighing ammonium polyphosphate, pentaerythritol, melamine and melamine borate in predetermined parts by mass, adding into a stirring container, adding deionized water in predetermined parts by mass, and uniformly stirring; then, the mixture is put into a sanding and dispersing multipurpose machine and stirred at a high speed of 700r/min-1500r/min for 15min-30min to obtain a continuous raindrop-shaped expansion flame-retardant system; and finally, adding the silicone-acrylic emulsion and the film-forming assistant in predetermined parts by mass into the expansion flame-retardant system, uniformly stirring, putting into a sanding and dispersing multipurpose machine, and stirring at a low speed of 300r/min-800r/min for 15min-30min to obtain the fireproof coating.

Aiming at the more specific components, the preparation method of the fireproof coating comprises the following steps: firstly, weighing 25% of ammonium polyphosphate, 10% of pentaerythritol, 10% of melamine and 5% of melamine borate in parts by mass, adding the materials into a stirring container, adding 24% of deionized water, and uniformly stirring; then, putting the mixture into a sanding and dispersing multipurpose machine, and stirring at a high speed of 1000r/min for 20min to obtain a continuous raindrop-shaped expansion flame-retardant system; and finally, adding 25 mass percent of silicone-acrylic emulsion and 1 mass percent of film-forming assistant into the expansion flame-retardant system, uniformly stirring, and then putting the mixture into a sand grinding and dispersing multipurpose machine to stir at a low speed of 500r/min for 20min to obtain the fireproof coating.

The chemical equation for synthesizing the melamine borate is as follows:

the method for synthesizing the melamine borate comprises the following steps: firstly, weighing 250mL of absolute ethyl alcohol, placing the absolute ethyl alcohol in a beaker, weighing 24.8g of boric acid, slowly adding the boric acid into the absolute ethyl alcohol, uniformly stirring, pouring the boric acid into a 500mL three-neck flask with a thermometer, a stirrer and a reflux device after the boric acid is dissolved in the absolute ethyl alcohol, and gradually increasing the temperature to 80 ℃; then, 50.4g of melamine is dissolved in 200mL of absolute ethyl alcohol, slowly dropped into a three-neck flask, and reacted for 4 hours at the temperature of 80 ℃; and finally, filtering and washing the obtained reaction product, and drying the obtained product in a drying oven at 65 ℃ until the quality is constant to obtain a white product, namely melamine borate.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.