Flue gas purification backflow system and fire-fighting refuge space
By combining a spray box and a cyclone dust collector in the flue gas purification and recirculation system, the problems of smoke affecting escape and intensifying fire during a fire are solved, thus purifying the smoke and creating a safe refuge space.
Patent Information
- Application Number
- CN202511326737.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2025-11-07
AI Technical Summary
Existing smoke control systems are unable to effectively reduce smoke volume during fires, resulting in low visibility, which hinders escape and may intensify the fire. Furthermore, traditional systems may cause smoke to spread.
A flue gas purification and recirculation system is adopted, which combines a spray box with a cyclone dust collector. The atomized liquid is mixed with the flue gas and then centrifugally removed particulate matter in the cyclone dust collector to form a purified airflow and create a temporary refuge space.
It effectively purifies smoke, improves visibility, reduces smoke concentration and temperature, creates a safe refuge space, prevents smoke from spreading, and reduces oxygen content to prevent the fire from intensifying.
Smart Images
Figure CN120907205A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of flue gas treatment, in particular to a flue gas purification and backflow system and a fire refuge space. BACKGROUND
[0002] Smoke is the first killer in fire. According to statistics, the death toll due to carbon monoxide poisoning or suffocation or death by other toxic smoke generally accounts for 40-50% of the total death toll in fire, and among the people burned to death, most of them are first poisoned and suffocated to faint and then burned to death. Smoke is a mixed gas stream of gaseous, liquid and solid substances containing heat generated in the process of thermal decomposition of substances in the combustion reaction and air, which is composed of extremely small carbon black particles and combustion decomposition products of combustible materials. In addition to high temperature and toxicity, smoke also greatly affects visibility, hinders personnel escape and causes panic in personnel psychology.
[0003] In modern buildings, a smoke prevention system is usually provided. The smoke prevention system adopts a mechanical pressurized air supply mode or a natural ventilation mode to prevent smoke from entering the evacuation passage. The smoke exhaust system adopts a mechanical smoke exhaust mode or a natural ventilation mode to exhaust the smoke to the outside of the building. The above smoke prevention and exhaust work may cause airflow changes to accelerate the spread of smoke, and the air supply and smoke prevention may increase the oxygen content of the air and strengthen the fire, and the amount of smoke in the fire space is not reduced. SUMMARY
[0004] The purpose of the present application includes providing a flue gas purification and backflow system and a fire refuge space, which can suck a large amount of smoke dust in the environment into a spray tank after a fire occurs, and the spray tank can cool the flue gas by spraying atomized liquid, and the atomized liquid can be mixed with the flue gas, so that the particle size of the particulate matter in the flue gas is increased, and then the mixed gas stream of the atomized liquid and the flue gas enters the cyclone dust collector, and the particulate matter can be removed in the cyclone dust collector by centrifugation, so that the concentration of the flue gas is reduced, the blackness of the flue gas is reduced, and the purification of the flue gas is completed. Thus, the purified gas stream can be discharged, and the sprayed purified gas stream is beneficial to forming a relatively low-temperature and high-visibility space in the refuge space to serve as a temporary refuge space.
[0005] The embodiments of the present application can be implemented as follows: In a first aspect, the present application provides a flue gas purification and backflow system, which comprises a main air inlet pipe, a spray tank, a cyclone dust collector and an air extraction fan. The main air inlet pipe is in communication with the spray tank and is used to guide the flue gas into the spray tank. The spray tank is used to mix the atomized liquid with the flue gas. The spray tank is in communication with the cyclone dust collector through a gas guide pipe and is used to guide the mixed gas stream of the atomized liquid and the flue gas into the cyclone dust collector for dust removal. The air extraction fan is in communication with the gas outlet of the cyclone dust collector.
[0006] In an optional embodiment, a plurality of atomizing nozzles are arranged in the spray tank, and each of the atomizing nozzles is provided with a plurality of atomizing nozzles. The main air inlet pipe and the air guide pipe are respectively connected to opposite side walls of the spray tank.
[0007] In an optional embodiment, the plurality of atomizing nozzles extend along the side of the spray tank connected to the main air inlet pipe to the side connected to the air guide pipe.
[0008] In an optional embodiment, the flue gas purification and backflow system further comprises an atomizing water tank. The atomizing water tank is in communication with the atomizing nozzles.
[0009] In an optional embodiment, the flue gas purification and backflow system further comprises an air injection pipe connected to the air extraction fan, and the air injection pipe injects air to form an isolated area in the indoor space.
[0010] In a second aspect, the present application provides a fire-fighting refuge space, which comprises a space main body and the flue gas purification and backflow system. The flue gas purification and backflow system is arranged in the space main body.
[0011] The flue gas purification and backflow system and the fire-fighting refuge space provided by the embodiments of the present application have the following beneficial effects. The flue gas purification and backflow system comprises a main air inlet pipe, a spray tank, a cyclone dust collector and an air extraction fan. The main air inlet pipe is in communication with the spray tank and is used to guide flue gas into the spray tank. The spray tank is used to mix atomized liquid with flue gas. The spray tank is in communication with the cyclone dust collector through an air guide pipe and is used to guide the mixed gas stream of atomized liquid and flue gas into the cyclone dust collector for dust removal. The air extraction fan is in communication with the air outlet of the cyclone dust collector. The flue gas purification and backflow system can suck a large amount of dust in the environment into the spray tank after a fire occurs, so that the particle size of particulate matter in the flue gas increases. Then, when the mixed gas stream of atomized liquid and flue gas enters the cyclone dust collector, the particulate matter can be removed in the cyclone dust collector by centrifugation, thereby purifying the flue gas. As a result, a purified gas stream can be guided out. When the flue gas purification and backflow system is applied to a fire-fighting refuge space, a relatively low-temperature and relatively high-visibility space can be formed in the refuge space by the injected purified gas stream, i.e., the function of constructing a temporary refuge space is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0013] Figure 1 A structural schematic diagram of the flue gas purification reflux system provided in the embodiment; Figure 2 A structural schematic diagram of the flue gas purification reflux system provided in the embodiment when provided with a water-cooled grid and an air injection pipe.
[0014] Icon: 100-flue gas purification reflux system; 110-main air inlet pipe; 120-spray tank; 130-cyclone dust collector; 140-exhaust fan; 150-air guide pipe; 121-atomizing injection pipe; 122-atomizing nozzle; 160-water-cooled grid; 170-air injection pipe. DETAILED DESCRIPTION
[0015] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0016] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.
[0017] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0018] In the description of the present application, it should be noted that if the terms such as "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0019] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0020] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0021] Please refer to Figure 1The embodiment provides a flue gas purification reflux system 100, the flue gas purification reflux system 100 includes main air inlet pipe 110, spray tank 120, cyclone dust collector 130 and air extractor 140; The main air inlet pipe 110 is communicated with the spray tank 120, and is used to guide the flue gas into the spray tank 120; the spray tank 120 is used to mix the atomized liquid with the flue gas; the spray tank 120 is communicated with the cyclone dust collector 130 through the air guide pipe 150, and is used to guide the mixed gas flow of the atomized liquid and the flue gas into the cyclone dust collector 130 for dust removal; the air extractor 140 is communicated with the air outlet of the cyclone dust collector 130.
[0022] Please refer to Figure 1 The working principle of the flue gas purification reflux system 100 is as follows: The flue gas purification reflux system 100 can suck a large amount of smoke dust in the environment into the spray tank 120 through the main air inlet pipe 110 after a fire occurs, and the suction negative pressure is generated by running the air extractor 140 when the flue gas is sucked; After the flue gas in the environment is guided into the spray tank 120, the spray tank 120 can cool the internal flue gas by spraying the atomized liquid, and the atomized liquid sprayed is mixed with the internal flue gas, so that the particle size of the particulate matter in the flue gas is increased due to the contact with the atomized liquid; after the mixed gas flow of the atomized liquid and the flue gas enters the cyclone dust collector 130, the particulate matter can be removed in the cyclone dust collector 130 by centrifugation, so that the flue gas concentration is reduced, the blackness of the flue gas is reduced, and the purification of the flue gas is completed. Therefore, the flue gas purification reflux system 100 can process the flue gas generated in the fire environment and guide out the purified gas flow, and the sprayed purified gas flow is beneficial to form a relatively low-temperature and relatively high-visibility space in the refuge place, thereby playing a role in constructing a temporary refuge space.
[0023] It should be noted that when it is applied to a fire refuge space, the sprayed purified gas flow can form a relatively low-temperature and relatively high-visibility space in the refuge place, that is, play a role in constructing a temporary refuge space. In the embodiment, the flue gas purification reflux system 100 is applied to the fire environment, and in other environments with greater flue gas hazards, the flue gas can also be purified and treated in this way.
[0024] Further, please refer to Figure 1In the embodiment, when the spray box 120 is configured, it functions to remove the particles in the flue gas by spraying the atomized liquid to form a mixed gas flow with the flue gas, and therefore, a plurality of atomizing nozzles 121 are arranged in the spray box 120, and a plurality of atomizing heads 122 are arranged on each atomizing nozzle 121. The main air inlet pipe 110 and the air guide pipe 150 are connected to the opposite two side walls of the spray box 120. Moreover, when the atomizing nozzle 121 is configured, the plurality of atomizing nozzles 121 are extended along the side of the spray box 120 connected to the main air inlet pipe 110 towards the side connected to the air guide pipe 150, and on the basis that the main air inlet pipe 110 and the air guide pipe 150 are connected to the opposite two side walls of the spray box 120, the contact between the particles in the flue gas and the atomized liquid can be ensured, thereby facilitating the increase of the particulate matter in the flue gas for subsequent separation.
[0025] Moreover, in the above structure, the atomized liquid in the atomizing box can cool the flue gas, and on the basis of this, in order to improve the cooling efficiency, please refer to Figure 1 and Figure 2 The water cooling grid 160 can be arranged in the spray box 120 near the air inlet pipe, and the purpose is to quickly cool the air flow introduced into the spray box 120.
[0026] From the above, in the embodiment, the liquid needs to be atomized to contact the particles in the flue gas in the flue gas purification and reflux system 100, and the flue gas needs to be cooled by the water cooling grid 160, and therefore, in order to supply water to the aforementioned atomizing box and water cooling grid 160, the flue gas purification and reflux system 100 further comprises a cooling water tank and an atomizing water tank. The cooling water tank is in communication with the water cooling grid 160, and the atomizing water tank is in communication with the atomizing nozzle 121.
[0027] On the basis of the above structure, please refer to Figure 1 and Figure 2 In the embodiment, the flue gas purification and reflux system 100 can further comprise an air injection pipe 170 connected to the air suction fan 140, and the air curtain formed by the air injection pipe 170 forms an isolated area. By such a setting mode, the air flow purified by the flue gas purification and reflux system 100 can form an air curtain by the air injection pipe 170, and an isolated area is formed by the air curtain to isolate the flue gas in the environment, thereby improving the purification efficiency of the flue gas and being beneficial to guarantee the air quality in the isolated area.
[0028] On this basis, since the system can form the above-mentioned isolation area through the air curtain during operation, in order to improve the air quality in the isolation area, the flue gas purification reflux system 100 further comprises a secondary air inlet pipe in communication with the spray tank 120; the air inlet end of the primary air inlet pipe 110 is located outside the isolation area, and the air inlet end of the secondary air inlet pipe is located inside the isolation area. That is, through this way, the flue gas inside and outside the isolation area can be treated synchronously.
[0029] In use, in order to ensure the normal operation of the flue gas purification reflux system 100, the primary air inlet pipe 110, the air guide pipe 150, the spray tank 120, the cyclone dust collector 130 and the air extraction fan 140 are all covered with a thermal protection layer, so as to ensure the stable operation of the flue gas purification reflux system 100 in a high-temperature environment.
[0030] Based on the above-mentioned flue gas purification reflux system 100, please refer to Figure 1 and Figure 2 The embodiment also provides a fire-fighting refuge space, which comprises a space body and the above-mentioned flue gas purification reflux system 100; the flue gas purification reflux system 100 is arranged in the space body.
[0031] The fire-fighting refuge space adopts the above-mentioned flue gas purification reflux system 100 arranged in the space body, so that in the event of fire or other harsh environments with a large amount of flue gas, a large amount of smoke dust in the space body can be sucked into the spray tank 120 through the primary air inlet pipe 110 by the flue gas purification reflux system 100. After the flue gas in the environment is introduced into the spray tank 120, the spray tank 120 can cool the internal flue gas by spraying the atomized liquid, and the sprayed atomized liquid can be mixed with the internal flue gas, so that the particle size of the particulate matter in the flue gas increases due to the contact with the atomized liquid. After the mixed gas flow of the atomized liquid and the flue gas enters the cyclone dust collector 130, the particulate matter can be removed in the cyclone dust collector 130 by centrifugation, so that the concentration of the flue gas is reduced and the darkness of the flue gas is reduced, thereby completing the purification of the flue gas. Thus, the space body can be protected from the influence of the flue gas by the sprayed purified gas flow, so as to maintain a relatively low-temperature and high-visibility space environment in the space body, i.e., the space body can be used as a refuge place.
[0032] When the above-mentioned space body is arranged, the embodiment adopts the mode that the space body is assembled by a plurality of fireproof and heat insulation plates, and in other embodiments of the application, the corresponding space in the building body can be used as the space body, and the above-mentioned flue gas purification reflux system 100 can be arranged in the space body.
[0033] In summary, the fire refuge space adopts the smoke purification recirculation system 100 arranged in the space main body, which can be applied to buildings, including industrial buildings, public buildings, residential buildings, corresponding positions, and fire power supply to ensure normal power supply of the smoke purification recirculation system 100 during fire; After the fire, the smoke in the building is purified by the smoke purification recirculation system 100, that is, the smoke in the surrounding space is sucked into the smoke purification recirculation system 100 through the main air inlet pipe 110 at the front end of the spray box 120, the atomizing nozzle 122 in the spray box 120 sprays atomized liquid droplets, the atomized liquid droplets cool the smoke and capture the particulate matter in the smoke, so that the particle size of the particulate matter increases, and the increased particulate matter liquid droplets enter the cyclone dust collector 130, and the particulate matter is removed by centrifugation in the cyclone dust collector 130, so that the smoke concentration is reduced and the darkness of the smoke is reduced; the purified smoke is sprayed out, and the sprayed purified gas can form a relatively low-temperature and relatively high-visibility space in the refuge place, or form an air curtain by the air jet pipe 170 to block the smoke from flowing into the space, thereby playing a role in constructing a temporary refuge space.
[0034] Therefore, the smoke purification recirculation system 100 and the fire refuge space can purify the smoke, and can also process the air in the space, thereby increasing the visibility; the spray box 120 can reduce the temperature of the smoke, thereby reducing the temperature in the space; the system has small resistance and can process large air volume; the jet flow is used to create a safe area for personnel to shelter in place; the smoke is purified and then recycled and discharged into the space, without increasing the oxygen content, thereby avoiding strengthening the fire; the jet flow is used to form an air curtain to block the smoke from other areas from entering the space.
[0035] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A flue gas purification and backflow system, characterized in that: the flue gas purification and backflow system comprises a main air inlet pipe, a spray tank, a cyclone dust collector and an air extraction fan; the main air inlet pipe is communicated with the spray tank and is used to guide flue gas into the spray tank; the spray tank is used to mix atomized liquid with flue gas; the spray tank is communicated with the cyclone dust collector through a gas guide pipe and is used to guide the mixed gas flow of atomized liquid and flue gas into the cyclone dust collector for dust removal; and the air extraction fan is communicated with the gas outlet of the cyclone dust collector.
2. The flue gas purification and backflow system according to claim 1, characterized in that: a plurality of atomizing nozzles are arranged in the spray tank, and a plurality of atomizing heads are arranged on each atomizing nozzle; and the main air inlet pipe and the gas guide pipe are respectively connected to opposite side walls of the spray tank.
3. The flue gas purification and backflow system according to claim 2, characterized in that: the atomizing nozzles extend along the side of the spray tank connected to the main air inlet pipe towards the side connected to the gas guide pipe.
4. The flue gas purification and backflow system according to claim 2, characterized in that: the flue gas purification and backflow system further comprises an atomizing water tank; and the atomizing water tank is communicated with the atomizing nozzles.
5. The flue gas purification and backflow system according to claim 1, characterized in that: the flue gas purification and backflow system further comprises an air nozzle connected to the air extraction fan, and the air nozzle sprays gas to form an isolated area in the indoor space.
6. A fire-fighting refuge space, characterized in that: the fire-fighting refuge space comprises a space main body and the flue gas purification and backflow system according to any one of claims 1-5; and the flue gas purification and backflow system is arranged in the space main body.