Method for discharging acidic condensate water through boiler smoke tube

Abstract

The invention provides a method for discharging acidic condensate water through a boiler smoke tube. The method for discharging the acidic condensate water through the boiler smoke pipe is executed in a boiler, the boiler comprises a boiler body, the smoke pipe and a condensate discharging assembly, the smoke pipe communicates with an exhaust port of the boiler body, and a collecting cavity is formed in the bottom end of the smoke pipe; the condensation discharging assembly comprises a discharging pipe and a control valve, and the discharging pipe is arranged on one side of the smoke pipe and communicates with the collecting cavity; a bent storage area is formed at the end, close to the collecting cavity, of the discharging pipe. The control valve is arranged adjacent to the bent storage area; the method comprises the following steps: mounting a discharge pipe on one side of a collection cavity; the control valve is opened, so that the acidic condensate water in the collecting cavity flows into the bent storage area to form a liquid-phase sealed discharge area; when the acidic condensate water in the liquid-phase sealed discharge area exceeds the preset capacity of the bent storage area, the acidic condensate water in the liquid-phase sealed discharge area overflows out of the bent storage area. According to the method, discharge of the acidic condensate water in the smoke pipe is achieved, the structure is simple, and installation is easy.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler smoke pipe exhaust, and in particular to a method for discharging acidic condensed water from a boiler smoke pipe. Background Art

[0002] Boilers are one of the common equipment in pharmaceutical factories. The steam they produce plays a vital role in many production links of pharmaceutical factories. During the operation of the boiler, the smoke pipe of the boiler will produce acidic condensate. If the acidic condensate is not discharged, it is easy to accumulate inside the smoke pipe and cause the smoke pipe to be corroded. In order to reduce the corrosion of the smoke pipe by the acidic condensate, an acid condensate system is usually added. For example, Chinese patent document No. CN 115854332 A discloses a flue gas heat energy and condensate utilization system, and Chinese patent document No. CN 104296125 B discloses an acid condensate recovery and treatment system for gas boilers.

[0003] However, the above-mentioned condensate recovery water tank is usually arranged at the tail end of the smoke pipe, such as the Chinese patent document No. CN115854332A. Figure 1 As shown, in actual applications, there is usually a certain temperature difference between the two ends of the smoke pipe connected between the recovery water tank and the boiler, which causes acid condensate to be produced on the outer wall of this section of the smoke pipe, causing the smoke pipe to be corroded. In addition, the traditional acid condensate system requires an additional acid condensate tank, resulting in a complex structure and difficult installation. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for discharging acidic condensate from a boiler smoke pipe which can discharge acidic condensate in the smoke pipe and has a simple structure and is easy to install.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A method for discharging acidic condensate from a boiler smoke pipe is performed in a boiler, wherein the boiler comprises a boiler body, a smoke pipe and a condensate discharge assembly, wherein the smoke pipe is connected to an exhaust port of the boiler body, and a collecting chamber is formed at the bottom end of the smoke pipe; the condensate discharge assembly comprises a discharge pipe and a control valve, wherein the discharge pipe is arranged at one side of the smoke pipe and is connected to the collecting chamber; a bent storage area is formed at one end of the discharge pipe close to the collecting chamber; and the control valve is arranged adjacent to the bent storage area;

[0007] The method for discharging acidic condensed water through a boiler smoke pipe comprises the following steps:

[0008] Installing the discharge pipe on one side of the collection chamber;

[0009] Opening the control valve to allow the acidic condensed water in the collecting chamber to flow into the bent storage area to form a liquid-phase sealed discharge area;

[0010] When the acidic condensed water in the liquid-phase seal discharge area exceeds the preset capacity of the bend storage area, the acidic condensed water in the liquid-phase seal discharge area will overflow from the bend storage area.

[0011] In one embodiment, before the step when the acidic condensate water in the liquid phase seal discharge area exceeds the preset capacity of the bend storage area, and after the step of opening the control valve to allow the acidic condensate water in the collection chamber to flow into the bend storage area to form a liquid phase seal discharge area, the method also includes the following step: intermittent alkaline gas is introduced into the bend storage area.

[0012] In one embodiment, the intermittent time of the intermittent alkaline gas is (2s-10s) / time.

[0013] In one embodiment, the flow rate of the intermittent alkaline gas is 0.2 L / min to 0.8 L / min.

[0014] In one embodiment, after the step of causing the acidic condensed water in the liquid phase seal discharge area to overflow the bend storage area when the acidic condensed water in the liquid phase seal discharge area exceeds the preset capacity of the bend storage area, the method further comprises the following steps:

[0015] When the smoke pipe has exhausted the smoke, backwashing gas is also introduced into the liquid phase seal discharge area.

[0016] In one embodiment, the bent storage area includes at least two interconnected bent portions.

[0017] In one embodiment, there are two bending portions, namely a U-shaped portion and a semi-U-shaped portion. The first end of the U-shaped portion is connected to the collecting chamber, the second end of the U-shaped portion is connected to the semi-U-shaped portion, and the semi-U-shaped portion is connected to the discharge area of ​​the discharge pipe.

[0018] In one embodiment, the U-shaped portion is concave, and the semi-U-shaped portion is convex.

[0019] In one embodiment, the collecting chamber is funnel-shaped.

[0020] In one of the embodiments, the outer wall of the smoke pipe is provided with a heat-insulating layer.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] 1) Since the discharge pipe is arranged on one side of the collecting chamber and is connected to the collecting chamber, when the control valve is opened, the discharge pipe will be connected to the collecting chamber, so that the acidic condensed water gathered at the bottom of the smoke pipe will flow into the bent storage area under the action of gravity. Due to the obstruction of the bent storage area, the acidic condensed water will stay in the bent storage area and form a liquid-phase sealed discharge area, so that the liquid-phase sealed discharge area can achieve sealing of the smoke pipe, effectively avoiding the problem of gas leakage in the smoke pipe and polluting the environment; when the acidic condensed water in the liquid-phase sealed discharge area exceeds the preset capacity of the bent storage area, the acidic condensed water in the liquid-phase sealed discharge area will overflow from the bent storage area, effectively avoiding the problem of excessive acidic condensed water gathering at the bottom of the collecting chamber and causing easy corrosion of the smoke pipe.

[0023] 2) Since the present invention can discharge the acidic condensed water in the smoke pipe only by adding a discharge pipe, it has a simple structure and is easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A flow chart of a method for discharging acidic condensate from a boiler smoke pipe according to an embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of a part of a boiler in one direction according to an embodiment of the present invention;

[0027] Figure 3 for Figure 2 The enlarged view of point A shown in FIG.

[0028] Figure 4 for Figure 2 A cross-sectional view at point A shown in FIG.

[0029] Figure 5 for Figure 4 The enlarged view of point B shown in FIG.

[0030] Figure 6 This is a physical picture of the connection between the exhaust pipe and the smoke pipe according to an embodiment of the present invention.

[0031] Figure numerals: 10, boiler; 100, boiler body; 200, smoke pipe; 210, collecting chamber; 300, condensate discharge assembly; 310, discharge pipe; 311, bent storage area; 3111, U-shaped portion; 3111a, first bent sub-portion; 3111b, second bent sub-portion; 3112, semi-U-shaped portion; 3113, high-level temporary storage area; 3114, low-level temporary storage area; 312, discharge area; 320, control valve; 330, pneumatic valve; 340, air pipe; 350, first nozzle; 360, second nozzle. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] The present disclosure provides a method for discharging acidic condensate water from a boiler smoke pipe, which is performed in a boiler. The boiler includes a boiler body, a smoke pipe and a condensate discharge assembly, wherein the smoke pipe is connected to the exhaust port of the boiler body, and a collecting chamber is formed at the bottom end of the smoke pipe; the condensate discharge assembly includes a discharge pipe and a control valve, wherein the discharge pipe is arranged at one side of the smoke pipe and is connected to the collecting chamber; a bent storage area is formed at one end of the discharge pipe close to the collecting chamber; the control valve is arranged adjacent to the bent storage area; the method for discharging acidic condensate water from the boiler smoke pipe includes the following steps: installing the discharge pipe at one side of the collecting chamber; opening the control valve to allow the acidic condensate water in the collecting chamber to flow into the bent storage area to form a liquid-phase sealed discharge area; when the acidic condensate water in the liquid-phase sealed discharge area exceeds the preset capacity of the bent storage area, the acidic condensate water in the liquid-phase sealed discharge area will overflow from the bent storage area.

[0036] In the above-mentioned method for discharging acidic condensate from a boiler smoke pipe, since the discharge pipe is arranged at one side of the collecting chamber and is connected to the collecting chamber, when the control valve is opened, the discharge pipe will be connected to the collecting chamber, so that the acidic condensate collected at the bottom of the smoke pipe will flow into the bending storage area under the action of gravity, and due to the obstruction of the bending storage area, the acidic condensate will stay in the bending storage area and form a liquid-phase sealed discharge area, so that the liquid-phase sealed discharge area can achieve sealing of the smoke pipe, effectively avoiding the problem of gas escaping from the smoke pipe and polluting the environment; when the acidic condensate in the liquid-phase sealed discharge area exceeds the preset capacity of the bending storage area, the acidic condensate in the liquid-phase sealed discharge area will overflow from the bending storage area, effectively avoiding the problem of excessive acidic condensate collecting at the bottom of the collecting chamber and causing the smoke pipe to be easily corroded. Furthermore, since the present disclosure can achieve the discharge of acidic condensate in the smoke pipe only by adding a discharge pipe, it is not only simple in structure but also easy to disassemble and assemble.

[0037] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments. Figures 2 to 4 In one embodiment, a method for discharging acidic condensate from a smoke pipe 200 of a boiler 10 is performed in the boiler 10. The boiler 10 includes a boiler body 100, a smoke pipe 200 and a condensate discharge assembly 300. The smoke pipe 200 is connected to the exhaust port of the boiler body 100 so that the gas in the boiler body 100 can enter the smoke pipe 200 through the exhaust port. A collecting chamber 210 is formed at the bottom of the smoke pipe 200 so that when the smoke passes through the smoke pipe 200, a large amount of acidic condensate is formed on the inner wall of the smoke pipe 200 due to the influence of the temperature difference in the smoke pipe 200. Under the action of gravity, the acidic condensate is gathered in the collecting chamber 210 at the bottom of the smoke pipe 200. The condensate discharge assembly 300 includes a discharge pipe 310 and a control valve 320. The discharge pipe 310 is arranged on one side of the smoke pipe 200. Figure 6 As shown, and connected to the collecting chamber 210, a bent storage area 311 is formed at one end of the discharge pipe 310 close to the collecting chamber 210, so that the acidic condensed water accumulated in the collecting chamber 210 flows into the bent storage area 311 of the discharge pipe 310 under the action of gravity; the control valve 320 is arranged adjacent to the bent storage area 311, so as to facilitate opening or closing of the control valve 320 to realize the connection and disconnection between the bent storage area 311 and the collecting chamber 210.

[0038] See also Figure 1 In one embodiment, the method for discharging acidic condensate from the smoke pipe 200 of the boiler 10 is performed in the boiler 10. The method for discharging acidic condensate from the smoke pipe 200 of the boiler 10 includes some or all of the following steps:

[0039] S110, installing the discharge pipe 310 on one side of the collection chamber 210 to achieve the communication between the collection chamber 210 and the discharge pipe 310, so that the acidic condensed water in the collection chamber 210 flows into the bent storage area 311 of the discharge pipe 310 under the action of gravity.

[0040] In one embodiment, the exhaust pipe 310 is welded and fixed to one side of the smoke pipe 200 .

[0041] In some other embodiments, the discharge pipe 310 is detachably arranged on one side of the smoke pipe 200, so that the user can disassemble and clean the discharge pipe 310. In one embodiment, the discharge pipe 310 and the smoke pipe 200 are connected by a buckle to realize the detachable arrangement of the discharge pipe 310 and the smoke pipe 200.

[0042] S120, opening the control valve 320 to allow the acidic condensed water in the collecting chamber 210 to flow into the bent storage area 311 to form a liquid-phase sealed discharge area.

[0043] It is understood that if a straight exhaust pipe 310 is used, the gas in the smoke pipe 200 will directly escape from the exhaust pipe 310 to pollute the environment. Figure 3 and Figure 4 As shown, in the present disclosure, since a bent storage area 311 is formed at one end of the discharge pipe 310 close to the collecting chamber 210, when the control valve 320 is opened, the collecting chamber 210 is connected to the bent storage area 311, so that the acidic condensed water gathered at the bottom of the smoke pipe 200 will flow into the bent storage area 311 under the action of gravity. Due to the obstruction of the bent storage area 311, the acidic condensed water will stay in the bent storage area 311 and form a liquid-phase sealed discharge area, so that the liquid-phase sealed discharge area can achieve sealing of the smoke pipe 200, effectively avoiding the problem of gas escape in the smoke pipe 200 and polluting the environment.

[0044] S130 , when the acidic condensed water in the liquid-phase sealed discharge area exceeds the preset capacity of the bent storage area 311 , the acidic condensed water in the liquid-phase sealed discharge area will overflow from the bent storage area 311 .

[0045] It can be understood that since the bent storage area 311 formed by the discharge pipe 310 can accommodate a certain amount of acidic condensate water, which is the preset capacity of the bent storage area 311, when the acidic condensate water in the liquid-phase sealed discharge area exceeds the preset capacity of the bent storage area 311, that is, the acidic condensate water in the collecting chamber 210 fills the bent storage area 311 and forms a pressure difference with the outside world, the acidic condensate water filled in the bent storage area 311 will automatically flow out of the bent storage area 311 and enter the discharge area 312 of the discharge pipe 310, thereby realizing the discharge of the acidic condensate water in the collecting chamber 210, and effectively avoiding the problem of excessive acidic condensate water gathering at the bottom of the collecting chamber 210 and causing the smoke pipe 200 to be easily corroded.

[0046] In the above-mentioned method of discharging acidic condensate from the smoke pipe 200 of the boiler 10, since the discharge pipe 310 is arranged on one side of the collecting chamber 210 and is connected to the collecting chamber 210, when the control valve 320 is opened, the discharge pipe 310 will be connected to the collecting chamber 210, so that the acidic condensate gathered at the bottom of the smoke pipe 200 will flow into the bending storage area 311 under the action of gravity, and due to the obstruction of the bending storage area 311, the acidic condensate will stay in the bending storage area 311 and form a liquid-phase sealed discharge area, so that the liquid-phase sealed discharge area can achieve sealing of the smoke pipe 200, effectively avoiding the problem of gas escaping from the smoke pipe 200 and polluting the environment; when the acidic condensate in the liquid-phase sealed discharge area exceeds the preset capacity of the bending storage area 311, the acidic condensate in the liquid-phase sealed discharge area will overflow the bending storage area 311, effectively avoiding the problem of excessive acidic condensate gathering at the bottom of the collecting chamber 210 and causing the smoke pipe 200 to be easily corroded. Furthermore, since the present disclosure can discharge the acidic condensed water in the smoke pipe 200 only by adding the discharge pipe 310, the structure is simple and easy to assemble and disassemble.

[0047] It is understandable that if the acid condensate water in the bending storage area 311 is discharged simply by gravity and pressure difference, the acid condensate water will stay in the bending storage area 311 for too long, causing the acid condensate water to corrode the inner wall of the bending storage area 311. Therefore, in one embodiment, before the step when the acidic condensed water in the liquid phase sealed discharge area exceeds the preset capacity of the bending storage area 311, and after the step of opening the control valve 320 to allow the acidic condensed water in the collecting chamber 210 to flow into the bending storage area 311 to form a liquid phase sealed discharge area, the method also includes the following steps: intermittently introducing alkaline gas into the bending storage area 311, so that the intermittently introduced alkaline gas can not only effectively neutralize the acid in the acidic condensed water, so that the acidic condensed water in the liquid phase sealed discharge area becomes neutral, effectively weakening the corrosiveness of the acidic condensed water; but also the intermittently introduced alkaline gas helps to accelerate the rapid discharge of the acidic condensed water in the bending storage area 311, effectively avoiding the problem of excessive acidic condensed water accumulating in the bending storage area 311 and causing corrosion.

[0048] In one of the embodiments, the alkaline gas is ammonia. Ammonia is dissolved in acidic condensed water to form ammonia water, which is alkaline and can react with the acid in the acidic condensed water to neutralize the acid, thereby weakening the corrosiveness of the acidic condensed water. The intermittent introduction of ammonia can also effectively tumble the acidic condensed water in the bending storage area 311. On the one hand, it is convenient to accelerate the rapid discharge of the acidic condensed water in the bending storage area 311, and on the other hand, it reduces the problem of blockage caused by solid sediment adhering to the inner wall of the bending storage area 311, and also reduces the difficulty of subsequent cleaning.

[0049] It can also be understood that if the amount of ammonia gas introduced at a time is too much, the acidic condensed water in the bend storage area 311 near the discharge area 312 will be directly discharged, and it will not be possible to effectively neutralize this section of acidic condensed water, causing this part of acidic condensed water to easily corrode the inner wall of the discharge area 312. If the amount of ammonia gas introduced at a time is too little, the amount of ammonia water added is small and it is impossible to achieve a relatively comprehensive neutralization of the acidic condensed water in the bend storage area 311. Therefore, in the present disclosure, intermittent alkaline gas is used to ensure that the intermittent alkaline gas added can achieve a relatively comprehensive tumbling of the acidic condensed water in the bend storage area 311, which not only ensures that the added ammonia gas can fully and comprehensively react with the acidic condensed water in the bend storage area 311, but also accelerates the rapid discharge of the acidic condensed water in the bend storage area 311.

[0050] Specifically, in one of the embodiments, the intermittent time of the intermittent alkaline gas is (2s~10s) / time, especially when used in conjunction with an intermittent alkaline gas flow rate of 0.2L / min~0.8L / min, to ensure that the amount of alkaline gas added is sufficient, effectively ensuring that the added ammonia gas can fully and comprehensively react with the acidic condensed water in the bending storage area 311, while ensuring that the added alkaline gas has good fluidity to accelerate the rapid discharge of the acidic condensed water in the bending storage area 311.

[0051] It should be noted that if the intermittent time is less than 2s, the intermittent time between two adjacent times will be short and it will not be possible to ensure that the ammonia gas introduced reacts fully with the acidic condensed water in the bent storage area 311, resulting in more ammonia gas in the acidic condensed water in the bent storage area 311 after long-term use, thereby reducing the utilization rate of ammonia gas and causing unreacted ammonia gas to escape to the outside and pollute the environment. Therefore, by controlling the intermittent time of the intermittent alkaline gas to (2s to 10s), a more sufficient reaction time can be provided for the alkaline gas to ensure that the added alkaline gas can react completely with the acidic condensed water in the bent storage area 311, effectively avoiding the problem of unreacted ammonia gas escaping, and better ensuring the positive pressure in the collection chamber 210, thereby ensuring the normal operation of the exhaust of the smoke pipe 200.

[0052] It can also be understood that if the flow rate of the intermittent alkaline gas is less than 0.2L / min, the flow rate of the alkaline gas introduced is too small to achieve effective tumbling of the acidic condensed water in the bending storage area 311. If the flow rate of the intermittent alkaline gas is greater than 0.8L / min, too much alkaline gas is introduced, causing the problem of escape. Therefore, in the present disclosure, by controlling the flow rate of the intermittent alkaline gas to 0.2L / min to 0.8L / min, the flow rate of the alkaline gas introduced is ensured to be more appropriate, especially with the intermittent time of the intermittent alkaline gas being (2s to 10s) / time, to ensure that the alkaline gas introduced can fully react with the acidic condensed water in the bending storage area 311, which not only improves the utilization rate of the alkaline gas, but also reduces the problem of ammonia escape.

[0053] It can be understood that since ammonia is a flammable gas, in order to ensure safety of use, in one embodiment, the ammonia needs to be placed in a sealed storage tank and set at a certain safety distance from the boiler 10 to avoid ammonia causing safety accidents due to being too close to the boiler 10.

[0054] It can be understood that the pH value of the acidic condensate water produced by the smoke pipe 200 is usually 2.9-4. Therefore, in one embodiment, the concentration of ammonia is 0.01mol / L-0.2mol / L, so that the added ammonia can fully neutralize the acidic condensate water of the second bent sub-portion 3111b, and the ammonia of 0.01mol / L-0.2mol / L is in a low concentration, ensuring that if ammonia leaks during use, it will not immediately cause a safety accident, further reducing the safety of use.

[0055] In one of the embodiments, after the step in which the acidic condensed water in the liquid phase sealed discharge area exceeds the preset capacity of the bend storage area 311 and the acidic condensed water in the liquid phase sealed discharge area overflows the bend storage area 311, the method further includes the following steps: when the smoke pipe 200 has exhausted the smoke, backwashing gas is also introduced into the liquid phase sealed discharge area to ensure that the added backwashing gas can better discharge the acidic condensed water accumulated in the bend storage area 311.

[0056] In one embodiment, the bent storage area 311 includes at least two interconnected bent portions to achieve a larger volume of collection of the acidic condensed water in the collection chamber 210 .

[0057] It can be understood that although the capacity of the bend storage area 311 can be effectively increased by increasing the number of bends to increase the single collection capacity of the bend storage area 311, too many bends will cause the acid condensed water in the bend storage area 311 to be difficult to discharge, resulting in the acid condensed water staying for too long and causing the bend storage area 311 to be more corrosive. Therefore, in one embodiment, the number of the bends is two, namely a U-shaped portion 3111 and a semi-U-shaped portion 3112, the first end of the U-shaped portion 3111 is connected to the collection chamber 210, and the second end of the U-shaped portion 3111 is connected to the semi-U-shaped portion 3112, so that the acid condensed water in the collection chamber 210 can flow into the U-shaped portion 3111 and the semi-U-shaped portion 3112 in turn to form a liquid-phase sealed discharge area, so as to ensure that the bend storage area 311 has a higher single collection capacity, thereby improving the sealing of the liquid-phase sealed discharge area to avoid The problem of gas leakage in the smoke pipe 200 is also reduced, and the problem of serious corrosion of the bent storage area 311 caused by the acidic condensed water staying in the bent storage area 311 for too long is reduced; and because the semi-U-shaped portion 3112 is connected with the discharge area 312 of the discharge pipe 310, the condensed water in the liquid-phase sealed discharge area can flow out of the semi-U-shaped portion 3112 and enter the discharge area 312 after being filled, so that the acidic condensed water in the liquid-phase sealed discharge area will overflow the bent storage area 311, thereby realizing the collection and discharge of the acidic condensed water in the collection chamber 210.

[0058] In one of the embodiments, since the U-shaped portion 3111 is concave, the concave U-shaped portion 3111 can form a height difference with the collecting chamber 210, so that the acidic condensed water in the collecting chamber 210 can fall well into the concave U-shaped portion 3111 under the action of gravity. Since the semi-U-shaped portion 3112 is convex, the convex semi-U-shaped portion 3112 forms a high-level horizontal temporary storage area 3113 at one end close to the concave U-shaped portion 3111, so that the high-level horizontal temporary storage area 3113 can effectively prolong the discharge time of the acidic condensed water. In this way, on the one hand, the sealing performance of the liquid phase sealing discharge area can be better improved, and the problem of gas escape in the smoke pipe 200 can be effectively avoided. On the other hand, the high-level horizontal temporary storage area 3113 can provide a buffering and deceleration effect for the alkaline gas, effectively avoiding the problem of direct discharge of the acidic condensed water in the concave U-shaped portion 3111 due to the introduction of alkaline gas.

[0059] like Figure 3 and Figure 4 As shown, in one embodiment, the U-shaped portion 3111 includes a first bending sub-portion 3111a and a second bending sub-portion 3111b which are connected to each other, and the collecting chamber 210 is connected with the second bending sub-portion 3111b through the first bending sub-portion 3111a to form an inwardly concave U-shaped portion 3111, and the second bending sub-portion 3111b is connected with the discharge area 312 through the semi-U-shaped portion 3112, so that the first bending sub-portion 3111a, the second bending sub-portion 3111b and the semi-U-shaped portion 3112 can form a bent storage area 311.

[0060] like Figure 3 As shown, in one embodiment, the condensation discharge assembly 300 further includes a pneumatic valve 330 and an air pipe 340, wherein the air pipe 340 is arranged near the bottom end of the second bending sub-portion 3111b, and the pneumatic valve 330 is arranged on the air pipe 340, and the pneumatic valve 330 is used to control the closing and circulation of the alkaline gas in the air pipe 340 to ensure that the alkaline gas introduced can flow the acidic condensed water in the second bending sub-portion 3111b to the first bending sub-portion 3111a and the semi-U-shaped portion 3112, which can realize The first bent sub-portion 3111a, the collecting chamber 210 and the semi-U-shaped portion 3112 have a better backwashing effect, which can effectively avoid the problem of clogging and difficulty in cleaning of the first bent sub-portion 3111a, the collecting chamber 210 and the semi-U-shaped portion 3112 due to the adhesion of solid sediment of the acidic condensate water after long-term use. On the other hand, it is beneficial to accelerate the discharge of the acidic condensate water in the semi-U-shaped portion 3112, and effectively avoid the problem of corrosion caused by excessive acidic condensate water accumulating in the first bent sub-portion 3111a and the second bent sub-portion 3111b.

[0061] In one embodiment, the boiler 10 further includes a PLC control mainboard, and the pneumatic valve 330 is electrically connected to the PLC control mainboard, so that the PLC control mainboard can control the opening and closing of the pneumatic valve 330 , thereby realizing the intermittent introduction of alkaline gas into the bent storage area 311 .

[0062] like Figure 5 As shown, in one embodiment, the air pipe 340 disposed in the second bending sub-portion 3111b is formed with two nozzles, namely a first nozzle 350 and a second nozzle 360. The first nozzle 350 is located above the air pipe 340, and the second nozzle 360 ​​is located below the air pipe 340. In this way, when the air pipe 340 is working, two upward and downward airflows will be formed in the second bending sub-portion 3111b to achieve effective tumbling of the acidic condensed water in the bending storage area 311.

[0063] In one embodiment, the first nozzle 350 is obliquely arranged in the second bending sub-portion 3111b, and the first nozzle 350 is arranged upward, so that the obliquely arranged first nozzle 350 can effectively roll over the acidic condensed water in the second bending sub-portion 3111b and the semi-U-shaped portion 3112; and because the second nozzle 360 ​​is obliquely arranged in the second bending sub-portion 3111b, and the second nozzle 360 ​​is arranged downward, the obliquely arranged second nozzle 360 ​​can effectively roll over the acidic condensed water in the first bending sub-portion 3111a.

[0064] In one embodiment, the inclination angle between the first nozzle 350 and the second bending sub-portion 3111b is 5° to 35° to ensure that the alkaline gas coming out of the first nozzle 350 can effectively roll over the acidic condensed water in the second bending sub-portion 3111b and the semi-U-shaped portion 3112.

[0065] In one embodiment, a high-level temporary storage area 3113 is formed at one end of the semi-U-shaped portion 3112 close to the second bent sub-portion 3111b; the extension direction of the first nozzle 350 spraying intersects with the first bent blocking portion of the high-level temporary storage area 3113, so as to ensure that the alkaline gas from the first nozzle 350 can achieve a comprehensive rolling of the acidic condensed water in the second bent sub-portion 3111b and the high-level temporary storage area 3113 of the semi-U-shaped portion 3112, and ensure that the alkaline gas from the first nozzle 350 can slowly push the second bent sub-portion 3111b to the high-level temporary storage area 3113 of the semi-U-shaped portion 3112. The acidic condensate water in 1b flows to the high horizontal temporary storage area 3113, especially in combination with the intermittent ventilation method. On the premise that the introduced alkaline gas can fully and comprehensively neutralize the acidic condensate water in the high horizontal temporary storage area 3113 of the second bending sub-portion 3111b and the semi-U-shaped portion 3112, it also helps to push the acidic condensate water in the second bending sub-portion 3111b to flow slowly to the high horizontal temporary storage area 3113, thereby avoiding the problem of corrosion caused by excessive accumulation of acidic condensate water in the second bending sub-portion 3111b and the high horizontal temporary storage area 3113.

[0066] In one embodiment, the intersection point of the extended direction of the first nozzle 350 and the first bent blocking portion of the high-level temporary storage area 3113 is at 1 / 10 to 1 / 3 of the height of the first bent blocking portion, so that the alkaline gas sprayed from the first nozzle 350 is blocked by the first bent blocking portion, and more alkaline gas can be reflected back into the second bent sub-portion 3111b to continue to flow, thereby improving the utilization rate of the alkaline gas and effectively avoiding the problem of low utilization rate of the alkaline gas caused by excessive alkaline gas being directly discharged from the high-level temporary storage area 3113; and ensuring that the alkaline gas is discharged directly from the high-level temporary storage area 3113. The alkaline gas introduced can effectively roll over the acidic condensate water in the second bending sub-portion 3111b and the high horizontal temporary storage area 3113, which not only effectively weakens the corrosiveness of the acidic condensate water in the second bending sub-portion 3111b and the high horizontal temporary storage area 3113, but also realizes the backwashing effect on the acidic condensate water in the second bending sub-portion 3111b and the high horizontal temporary storage area 3113, so as to avoid the problem of easy blockage of the second bending sub-portion 3111b and the high horizontal temporary storage area 3113, and accelerate the rapid discharge of the acidic condensate water in the second bending sub-portion 3111b.

[0067] It can be understood that if the intersection point of the extended direction of the spray of the first nozzle 350 and the first bent blocking portion of the high-level horizontal temporary storage area 3113 is lower than 1 / 10 of the height of the first bent blocking portion, the introduced alkaline gas cannot achieve a good rolling of the acidic condensate water in the second bent sub-portion 3111b and the high-level horizontal temporary storage area 3113; if the intersection point of the extended direction of the spray of the first nozzle 350 and the first bent blocking portion of the high-level horizontal temporary storage area 3113 is higher than 1 / 3 of the height of the first bent blocking portion, the introduced alkaline gas is easy to escape from the high-level horizontal temporary storage area 3113, resulting in a low utilization rate of the alkaline gas. Therefore, in the present disclosure, by setting the intersection point of the extended direction of the first nozzle 350 and the first bent blocking portion of the high-level temporary storage area 3113 to be 1 / 10 to 1 / 3 of the height of the first bent blocking portion, especially with an intermittent time of (2s to 10s) / time, especially with an intermittent alkaline gas flow rate of 0.2L / min to 0.8L / min, it is ensured that the alkaline gas introduced can only reach 1 / 10 to 1 / 3 of the height of the first bent blocking portion at most, and cannot reach the highest point of the first bent blocking portion, so that the alkaline gas in the high-level temporary storage area 3113 is The first bending blocking portion has relatively few parts, and since the first bending blocking portion itself has a curved surface, the first bending blocking portion can effectively block the ejected alkaline gas, and the alkaline gas after being blocked can be reflected back into the second bending sub-portion 3111b to continue flowing, which not only realizes the better tumbling of the acidic condensed water in the second bending sub-portion 3111b, but also improves the utilization rate of the alkaline gas, and effectively avoids the problem of low utilization rate of the alkaline gas caused by excessive alkaline gas being directly discharged from the high-level temporary storage area 3113; and better ensures the positive pressure in the collecting chamber 210, thereby ensuring the normal operation of the exhaust of the smoke pipe 200.

[0068] In one embodiment, the inclination angle between the second nozzle 360 ​​and the second bending sub-portion 3111b is 10° to 25°, so as to ensure that the alkaline gas from the second nozzle 360 ​​can effectively roll over the acidic condensed water in the first bending sub-portion 3111a.

[0069] In one embodiment, a low-level temporary storage area 3114 is formed near the first bending sub-portion 3111a and the second bending sub-portion 3111b to ensure that the first bending sub-portion 3111a can better collect the acidic condensed water.

[0070] It can be understood that since the first bending sub-portion 3111a is directly connected to the collection chamber 210, if too much alkaline gas passes through, it will cause the alkaline gas to escape into the collection chamber 210. For some explosive or flammable alkaline gases, such as ammonia, if the explosive or flammable alkaline gas is mixed in the higher smoke pipe 200, there is a high safety hazard. In other words, if the intersection point of the extended direction of the second nozzle 360 ​​spraying and the second bending blocking portion of the low-level temporary storage area 3114 is lower than 1 / 2 of the height of the second bending blocking portion, the less ammonia gas cannot achieve the rolling of the acidic condensed water in the low-level temporary storage area 3114. If the intersection point of the extended direction of the second nozzle 360 ​​spraying and the second bending blocking portion of the low-level temporary storage area 3114 is higher than 3 / 4 of the height of the second bending blocking portion, it will cause too much ammonia gas to enter the low-level temporary storage area 3114 and escape into the collection chamber 210, resulting in a high safety hazard.

[0071] Therefore, in the present disclosure, the intersection point of the extended direction of the second nozzle 360 ​​spraying and the second bent blocking portion of the low horizontal temporary storage area 3114 is at 1 / 2 to 3 / 4 of the height of the second bent blocking portion, especially with an intermittent time of (2s to 10s) / time, and especially with the use of an intermittent alkaline gas flow rate of 0.2L / min to 0.8L / min, to ensure that the amount of ammonia entering the low horizontal temporary storage area 3114 is more appropriate. In this way, while ensuring the effective tumbling and more comprehensive neutralization of the acidic condensate in the low horizontal temporary storage area 3114, it also avoids the problem of excessive ammonia entering the low horizontal temporary storage area 3114 and escaping to the collection chamber 210, thereby causing a higher safety hazard, thereby effectively reducing safety hazards.

[0072] It should be noted that if the alkaline gas is continuously introduced, excessive ammonia will escape from the low-level temporary storage area 3114 to the collection chamber 210, resulting in a higher safety hazard. Therefore, in the present disclosure, the intermittent time of the intermittent alkaline gas is (2s to 10s) / time to ensure that the introduced alkaline gas can be well dissolved in the first bending sub-portion 3111a, and the intermittent time of 2s to 10s, especially the flow rate of the intermittent alkaline gas is 0.2L / min to 0.8L / min, ensure that the added alkaline gas can achieve a more comprehensive neutralization effect with the acidic condensed water in the first bending sub-portion 3111a, so as to effectively weaken the corrosiveness of the acidic condensed water in the first bending sub-portion 3111a.

[0073] It can be understood that, although the addition of the first nozzle 350 and the second nozzle 360 ​​can achieve effective tumbling of the acidic condensed water in the bend storage area 311 and a more comprehensive neutralization of the acidity, if the first nozzle 350 and the second nozzle 360 ​​protrude too much from the inner wall of the bend storage area 311, it will cause a blind area for the discharge of the acidic condensed water in the bend storage area 311. Therefore, in one embodiment, the first nozzle 350 and the second nozzle 360 ​​are flush with the inner wall of the bend storage area 311 to ensure that the added first nozzle 350 and the second nozzle 360 ​​do not protrude from the inner wall of the bend storage area 311, thereby reducing the blind area for the discharge of the acidic condensed water in the bend storage area 311.

[0074] It can be understood that if the filling amount of the acidic condensate water in the high-level horizontal temporary storage area 3113 is too sufficient, the introduced alkaline gas will cause the problem of direct discharge of the acidic condensate water in the high-level horizontal temporary storage area 3113, that is, the acidic condensate water in the high-level horizontal temporary storage area 3113 cannot be rolled over well. If the filling amount of the acidic condensate water in the high-level horizontal temporary storage area 3113 is too little, it will cause the problem of excessive alkaline gas easily escaping.

[0075] Therefore, in the present disclosure, when the acidic condensed water is filled to 1 / 6 to 1 / 3 of the length of the high horizontal temporary storage area 3113, the acidic condensed water does not completely fill the high horizontal temporary storage area 3113 to form a reserved space. At this time, the intermittent alkaline gas supply mode is turned on, that is, intermittent alkaline gas is introduced into the bending storage area 311, so that the reserved space can better accommodate the increase in the amount of liquid after the acidic condensed water in the bending storage area 311 absorbs the alkaline gas, and effectively avoid the problem of direct discharge of the acidic condensed water due to the filling of the high horizontal temporary storage area 3113 after the alkaline gas is added, and the reserved space can provide a better activity space for the alkaline gas to roll over the acidic condensed water in the bending storage area 311, so as to ensure that the alkaline gas is added. The alkaline gas can achieve better tumbling of the acidic condensed water in the bending storage area 311 and more comprehensive neutralization of the acidity; especially with the intersection of the extended direction of the first nozzle 350 and the first bent blocking part of the high horizontal temporary storage area 3113 being at 1 / 10 to 1 / 3 of the height of the first bent blocking part, and the intersection of the extended direction of the second nozzle 360 ​​and the second bent blocking part of the low horizontal temporary storage area 3114 being at 1 / 2 to 3 / 4 of the height of the second bent blocking part, while achieving effective tumbling of the acidic condensed water in the bending storage area 311 and more comprehensive neutralization of the acidity, the problem of alkaline gas escape is avoided, thereby improving the utilization rate of the alkaline gas.

[0076] It can be understood that although the acidic condensate can be effectively rolled in the bending storage area 311 by starting the intermittent alkaline gas mode when the acidic condensate is filled to 1 / 6 to 1 / 3 of the length of the high level temporary storage area 3113, it is not conducive to the discharge of the acidic condensate in the bending storage area 311. Therefore, in one embodiment, the number of intermittent alkaline gas is controlled to be 3 to 6 times, especially when the acidic condensate is filled to 1 / 6 to 1 / 3 of the length of the high level temporary storage area 3113, the intermittent alkaline gas mode is turned on to ensure that the alkaline gas passed 3 to 6 times can better increase the capacity of the acidic condensate, and ensure that the acidic condensate in the bending storage area 311 will flow out of the high level temporary storage area 3113 after completing the alkaline gas passing operation 3 to 6 times, so as to achieve better discharge of the neutralized acidic condensate in the bending storage area 311.

[0077] In one embodiment, the high-level horizontal temporary storage area 3113 includes a first bend blocking portion, a first horizontal buffer portion and a third bend blocking portion. The first bend blocking portion is connected to the third bend blocking portion through the first horizontal buffer portion, the first bend blocking portion is connected to the second bend sub-portion 3111b, and the third bend blocking portion is connected to the discharge area to ensure that the first bend blocking portion and the third bend blocking portion of the high-level horizontal temporary storage area 3113 can effectively prevent the acidic condensate water in the bend storage area 311 from being directly discharged, so as to ensure that the subsequent introduction of alkaline gas can effectively tumble the acidic condensate water in the bend storage area 311, and can also effectively avoid the problem of alkaline gas escape.

[0078] In one embodiment, the bending angle of the first bending blocking sub-portion is 115°~155°, and the bending angle of the third bending blocking sub-portion is 115°~155°; to ensure that the formed high-level temporary storage area 3113 can achieve better blocking and buffering effects, to ensure that the subsequent introduction of alkaline gas can effectively roll over the acidic condensed water in the bending storage area 311, and to effectively avoid the problem of alkaline gas escape.

[0079] In one embodiment, the low-level horizontal temporary storage area 3114 includes a second bend blocking portion, a second horizontal buffer portion and a fourth bend blocking portion. The first end of the second bend blocking portion is connected to the fourth bend blocking portion through the second horizontal buffer portion, and the second end of the second bend blocking portion is connected to the first bend blocking portion through the second bend sub-portion 3111b, so as to ensure that the second bend blocking portion and the fourth bend blocking portion of the low-level horizontal temporary storage area 3114 can effectively prevent the alkaline gas from entering the collection chamber 210, better ensure the positive pressure in the collection chamber 210, thereby ensuring the normal operation of the exhaust of the smoke pipe 200; it also effectively avoids the problem of alkaline gas escape, thereby improving the utilization rate of the alkaline gas.

[0080] In one of the embodiments, the bending angle of the second bending blocking sub-portion is 115°~155°, and the bending angle of the fourth bending blocking sub-portion is 115°~155°; to ensure that the formed low-level horizontal temporary storage area 3114 can effectively block the alkaline gas from entering the collection chamber 210 and causing the pressure in the collection chamber 210 to increase and cause safety problems, thereby ensuring the normal operation of the exhaust of the smoke pipe 200 and improving the utilization rate of the alkaline gas.

[0081] In one of the embodiments, the height of the U-shaped portion 3111 and the semi-U-shaped portion 3112 is 10 cm to 50 cm, and the pipe diameter is 6 cm to 10 cm, so as to ensure that the single-time collection capacity of the condensed water in the bent storage area 311 can better meet the continuous discharge of the boiler 10 with a volume of 4 tons to 5 tons, thereby ensuring the continuous and normal operation of the boiler 10 with a volume of 4 tons to 5 tons.

[0082] In one of the embodiments, after the intermittent alkaline gas is passed 3 to 6 times, the intermittent alkaline gas mode is turned off to continue collecting acidic condensed water. When the acidic condensed water reaches 1 / 6 to 1 / 3 of the length of the high-level temporary storage area 3113, the intermittent alkaline gas mode is turned on, and the alkaline gas is used with an intermittent time of (2s to 10s) / time, an intermittent alkaline gas flow rate of 0.2L / min to 0.8L / min, an alkaline gas concentration of 0.01mol / L to 0.2mol / L, and an intermittent alkaline gas passing frequency of 3 to 6 times, so as to achieve effective tumbling of the acidic condensed water in the bending storage area 311 and a more comprehensive neutralization of the acidity, while avoiding the problem of alkaline gas escape, thereby improving the utilization rate of the alkaline gas.

[0083] In one of the embodiments, when the acidic condensate reaches 1 / 6 to 1 / 3 of the length of the high-level temporary storage area 3113, the intermittent alkaline gas mode is turned on, and when the intermittent alkaline gas is passed 3 to 6 times, the intermittent alkaline gas mode is turned off to achieve continuous circulation of the acidic condensate in the bent storage area 311, thereby ensuring the normal operation of the discharge pipe 310.

[0084] In one embodiment, the second bending sub-portion 3111 b is formed with a transparent area so that the user can observe the state of the acidic condensed water in the bending storage area 311 .

[0085] In one embodiment, the outer peripheral wall of the second bending sub-portion 3111b is made of transparent material so that the user can more comprehensively observe the spraying status of the first nozzle 350 and the second nozzle 360, thereby effectively preventing the first nozzle 350 and the second nozzle 360 ​​from being unable to effectively roll over the acidic condensed water in the bending storage area 311 and more comprehensively neutralize the acidity due to spraying problems.

[0086] In one embodiment, the transparent material includes any one of tempered glass, high-silica glass, quartz glass and aluminosilicate glass. Specifically, the transparent material is high-silica glass.

[0087] Furthermore, in one of the embodiments, the SiO2 content in the high-silica glass is 97% to 98%, so that the high-silica glass has higher structural strength and better stability, thereby ensuring the service life of the second bending sub-portion 3111b.

[0088] In one embodiment, the collecting chamber 210 is funnel-shaped to ensure that the acidic condensed water in the collecting chamber 210 can flow into the bent storage area 311 under the action of gravity; and it is beneficial to better collect more acidic condensed water in the smoke pipe 200.

[0089] In one embodiment, the width of the funnel increases from an end close to the exhaust pipe 340 to an end away from the exhaust pipe 340 to form a funnel-shaped collecting chamber 210 .

[0090] In one embodiment, the outer wall of the smoke tube 200 is provided with a heat-insulating layer to reduce the temperature difference between the two ends of the smoke tube 200, thereby reducing the amount of acid condensed water generated in the smoke tube 200 and reducing the amount of acid condensed water to be treated.

[0091] In one of the embodiments, the temperature in the smoke tube 200 is 60 degrees Celsius to 80 degrees Celsius, so as to ensure that the temperature in the smoke tube 200 is low and the temperature difference is small, thereby effectively reducing the amount of acidic condensed water generated in the smoke tube 200.

[0092] In one embodiment, the control valve 320 is electrically connected to a PLC control mainboard to realize automatic opening or closing of the control valve 320 .

[0093] It can be understood that since the acidic condensate in the bending storage area 311 is emptied every time the boiler 10 is operated, if the control valve 320 is opened when the boiler 10 is operating, gas will be generated in the smoke pipe 200 and escape to pollute the environment. Therefore, in one embodiment, the PLC control main board sets the opening time of the control valve 320: when the boiler 10 is started after running for 10 to 20 minutes, it is ensured that a certain amount of acidic condensate can be collected in the collection chamber 210. When the control valve 320 is opened, the acidic condensate in the collection chamber 210 will flow into the bending storage area 311 under the action of gravity and form a liquid-phase sealed discharge area, so that the liquid-phase sealed discharge area can achieve the sealing of the smoke pipe 200, effectively avoiding the problem of gas escaping from the smoke pipe 200 and polluting the environment; the automatic monitoring of the control valve 320 by the PLC control main board is realized, saving the cost of manual supervision.

[0094] It should be noted that since the PLC control mainboard, the control valve 320 and the pneumatic valve 330 are all prior art, they are not described in detail in this disclosure.

[0095] Compared with the prior art, the present invention has at least the following advantages:

[0096] 1) Since the discharge pipe 310 is arranged on one side of the collecting chamber 210 and is connected to the collecting chamber 210, when the control valve 320 is opened, the discharge pipe 310 will be connected to the collecting chamber 210, so that the acidic condensed water gathered at the bottom of the smoke pipe 200 will flow into the bending storage area 311 under the action of gravity. Due to the obstruction of the bending storage area 311, the acidic condensed water will stay in the bending storage area 311 and form a liquid-phase sealed discharge area, so that the liquid-phase sealed discharge area can achieve sealing of the smoke pipe 200, effectively avoiding the problem of gas leakage in the smoke pipe 200 and polluting the environment; when the acidic condensed water in the liquid-phase sealed discharge area exceeds the preset capacity of the bending storage area 311, the acidic condensed water in the liquid-phase sealed discharge area will overflow the bending storage area 311, effectively avoiding the problem of excessive acidic condensed water gathering at the bottom of the collecting chamber 210 and causing the smoke pipe 200 to be easily corroded.

[0097] 2) Since the present disclosure can discharge the acidic condensed water in the smoke pipe 200 only by adding the discharge pipe 310, it has a simple structure and is easy to disassemble and assemble.

[0098] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A method for discharging acidic condensate from a boiler smoke pipe, performed in a boiler, characterized in that: The boiler comprises a boiler body, a smoke pipe and a condensation discharge assembly, wherein the smoke pipe is connected to the exhaust port of the boiler body, and a collecting chamber is formed at the bottom end of the smoke pipe; the condensation discharge assembly comprises a discharge pipe and a control valve, wherein the discharge pipe is arranged at one side of the smoke pipe and is connected to the collecting chamber; a bent storage area is formed at one end of the discharge pipe close to the collecting chamber; and the control valve is arranged adjacent to the bent storage area; The method for discharging acidic condensed water through a boiler smoke pipe comprises the following steps: Installing the discharge pipe on one side of the collection chamber; Opening the control valve to allow the acidic condensed water in the collecting chamber to flow into the bent storage area to form a liquid-phase sealed discharge area; When the acidic condensed water in the liquid-phase seal discharge area exceeds the preset capacity of the bend storage area, the acidic condensed water in the liquid-phase seal discharge area will overflow from the bend storage area.

2. The method for discharging acidic condensate from a boiler smoke pipe according to claim 1, characterized in that: Before the step of when the acidic condensed water in the liquid phase sealed discharge area exceeds the preset capacity of the bend storage area, and after the step of opening the control valve to allow the acidic condensed water in the collecting chamber to flow into the bend storage area to form a liquid phase sealed discharge area, the method also includes the following step: intermittent alkaline gas is introduced into the bend storage area.

3. The method for discharging acidic condensate from a boiler smoke pipe according to claim 2, characterized in that: The intermittent time of the intermittent alkaline gas is (2s-10s) / time.

4. The method for discharging acidic condensate from a boiler smoke pipe according to claim 2, characterized in that: The flow rate of the intermittent alkaline gas is 0.2L / min to 0.8L / min.

5. The method for discharging acidic condensate from a boiler smoke pipe according to claim 1, characterized in that: After the step of causing the acidic condensed water in the liquid phase seal discharge area to overflow the bend storage area when the acidic condensed water in the liquid phase seal discharge area exceeds the preset capacity of the bend storage area, the method further comprises the following steps: When the smoke pipe has exhausted the smoke, backwashing gas is also introduced into the liquid phase seal discharge area.

6. The method for discharging acidic condensate from a boiler smoke pipe according to claim 1, characterized in that: The bending storage area includes at least two connected bending parts.

7. The method for discharging acidic condensate from a boiler smoke pipe according to claim 6, characterized in that: There are two bending parts, namely a U-shaped part and a semi-U-shaped part. The first end of the U-shaped part is connected to the collecting chamber, the second end of the U-shaped part is connected to the semi-U-shaped part, and the semi-U-shaped part is connected to the discharge area of ​​the discharge pipe.

8. The method for discharging acidic condensate from a boiler smoke pipe according to claim 7, characterized in that: The U-shaped portion is inwardly concave, and the semi-U-shaped portion is outwardly convex.

9. The method for discharging acidic condensate from a boiler smoke pipe according to claim 1, characterized in that: The collecting chamber is funnel-shaped.

10. The method for discharging acidic condensate from a boiler smoke pipe according to claim 1, characterized in that: The outer peripheral wall of the smoke pipe is provided with a heat insulation layer.

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