Flue gas complementary energy recycling, desulfurizing, dedusting and environment-friendly discharging system for sintered brick tunnel kiln

Abstract

The utility model discloses a sintered brick tunnel kiln flue gas complementary energy recycling and desulfurization dedusting environment-friendly discharge system, which divides a sintered brick tunnel kiln into two parts, namely a drying kiln for drying wet blanks and a roasting kiln for roasting the dry blanks, the direction of the dry blanks in the roasting kiln is opposite to that of airflow, and the airflow firstly passes through a cooling section and then passes through a roasting section; according to the utility model, the temperature of finished bricks can be reduced and cooled, the temperature of the finished bricks is raised, the finished bricks participate in combustion in the firing section and temperature rise of dry blanks in the temperature rise section, and flue gas from the temperature rise section enters the drying kiln to dry and preheat wet blanks, so that the roasting time and the energy consumption are greatly reduced, and meanwhile, the flue gas is also cooled; the subsequent desulfurization treatment is facilitated. According to the utility model, airflow is pressed by considering the characteristic of belt speed that hot gas moves upwards, a vertical desulfurization chamber I is changed into a horizontal type, and a plurality of spray water curtains are arranged, so that the flow velocity of flue gas is sufficiently delayed, the desulfurization liquid and the flue gas are sufficiently contacted and reacted, and the desulfurization and dust reduction effects are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel kiln brick production, and more specifically to an environmentally friendly emission system for recycling residual energy of smoke from a sintered brick tunnel kiln and for desulfurization and dust removal. Background Art

[0002] Tunnel kilns produce a lot of smoke during the production of sintered bricks, which has a great impact on environmental pollution, mainly air pollution. However, infrastructure is a necessity for people's lives, and it is inseparable from sintered bricks, so how to promote the emission technology of tunnel kiln smoke to meet the standards is an urgent and top priority task for each brick factory.

[0003] Patent 201920004163.5 discloses a flue gas desulfurization and dust removal system for a sintered brick tunnel kiln, including a desulfurization tower, a wet dust collector, a second air supply pipe, a third air supply pipe, a first air supply pipe and a blower. The flue gas desulfurization and dust removal system for a sintered brick tunnel kiln also includes a heat exchange and dehumidification system, which includes a water tank, a first heat exchange air duct and a separation box. The air inlet of the first heat exchange air duct is connected to the air outlet of the first air supply pipe, and the air outlet is arranged at the lower part of the inner cavity of the separation box and faces downward. The air inlet of the second air supply pipe is arranged at the upper part of the inner cavity of the separation box, and the air outlet is connected to the air inlet of the desulfurization tower. This patented technology cleverly utilizes the heat of high-temperature flue gas, and first passes the flue gas with a large amount of moisture into the heat exchange system for waste heat recovery and dehumidification, and then passes into the desulfurization tower for desulfurization, so that the desulfurization and dust removal effect of the flue gas is further improved, and the heat of the flue gas is effectively recovered.

[0004] As we all know, the emission characteristics of tunnel kiln flue gas are: first, high temperature and large amount of waste heat; second, it contains harmful gases such as dust and sulfide. The above patent thinks of flue gas heat recovery, but only considers the problem from the perspective of flue gas emission, and then comes up with a usable solution. Although the solution is desirable, it is relatively one-sided. Secondly, the flue gas passes through the desulfurization tower in a hurry, the desulfurization effect is not thorough, and the flue gas emission will not meet the standard. Utility Model Content

[0005] The purpose of the utility model is to overcome the above defects of the prior art and provide a sintered brick tunnel kiln flue gas surplus energy recycling and desulfurization and dust removal environmentally friendly emission system, which aims to let the flue gas from the heating section enter the drying kiln to dry and preheat the wet blanks, greatly reducing the roasting time and energy consumption, and at the same time the flue gas is also cooled, which is beneficial to the subsequent desulfurization treatment; the flue gas from the drying kiln is then sent back to the cooling section of the roasting kiln to participate in the secondary combustion of the firing section, which can reduce energy consumption; furthermore, the humid flue gas produces an aeration reaction on the finished bricks in the cooling section, thereby ensuring the durability of the quality of the finished bricks.

[0006] It aims to change the vertical desulfurization chamber into a horizontal one, and several spray water curtains are separately arranged, so as to fully delay the flue gas flow rate, enable the desulfurization liquid to fully contact and react with the flue gas, and greatly improve the desulfurization and dust removal effects.

[0007] To achieve the above object, the utility model is realized through the following technical solutions: A sintered brick tunnel kiln flue gas waste energy recycling and desulfurization, dust removal and environmental protection emission system. The sintered brick tunnel kiln includes at least one drying kiln channel and at least one roasting kiln channel. Wet bricks pass through the drying kiln channel to form dry bricks, and the dry bricks then pass through the roasting kiln channel to form finished products. Each of the roasting kiln channels is divided into a heating section, a firing section and a cooling section along the advancing direction of the dry bricks. An intake air fan is arranged on each cooling section, and a first exhaust air fan is arranged on each heating section. The flue gas enters from the cooling section, passes through the firing section and exits from the heating section. It is characterized in that a flue gas waste energy recycling system and a desulfurization, dust removal and environmental protection emission system are configured on the sintered brick tunnel kiln. The flue gas waste energy recycling system includes a flue gas extraction pipeline, a flue gas discharge pipeline and a flue gas return pipeline. The intake end of the flue gas extraction pipeline is connected to each of the first exhaust air fans, the outlet end of the flue gas extraction pipeline is connected to each drying kiln channel, the intake end of the flue gas discharge pipeline is connected to each drying kiln channel, the intake end of the flue gas return pipeline is connected to the flue gas discharge pipeline, and the outlet end of the flue gas return pipeline is connected to each intake air fan; the desulfurization, dust removal and environmental protection emission system includes a horizontal desulfurization flue and a high-altitude emission smoke tower. The horizontal desulfurization flue is composed of a fully enclosed horizontal box body. An intake port and an exhaust port are respectively arranged at both ends of the horizontal desulfurization flue. The intake port is connected to the outlet end of the flue gas discharge pipeline, and the exhaust port is connected to the high-altitude emission smoke tower. The inner bottom of the horizontal desulfurization flue is divided into six pools, namely Pool No. 1, Pool No. 2, Pool No. 3, Pool No. 4, Pool No. 5 and Pool No. 6, which are connected in a circuitous manner by five partition plates along the advancing direction of the flue gas. Spray devices are arranged above Pool No. 1, Pool No. 2, Pool No. 3 and Pool No. 4, an aeration device is arranged at the inner bottom of Pool No. 5, a chemical addition tank and a drain valve are arranged on Pool No. 6, a circulating water pipe is connected between the chemical addition tank and the spray device, and a water supply pipe is arranged on Pool No. 1.

[0008] The utility model divides the sintered brick tunnel kiln into two parts, forming a drying kiln for drying wet blanks and a roasting kiln for roasting dry blanks. In the roasting kiln, the moving direction of the dry blanks is opposite to the moving direction of the air flow. The air flow first passes through the cooling section, which can cool down the finished bricks, and at the same time, the air flow itself is heated up, and then participates in the burning in the firing section and the heating of the dry blanks in the heating section, which greatly reduces the consumption of roasting energy. The flue gas coming out of the heating section enters the drying kiln to dry and preheat the wet blanks, which greatly reduces the roasting time and energy consumption. At the same time, the flue gas is cooled down, which is beneficial to the subsequent desulfurization treatment. The flue gas coming out of the drying kiln is sent back into the cooling section of the roasting kiln, mainly for two purposes. One is that there are still combustible gases in the flue gas, such as carbon monoxide, nitrogen monoxide and alkane gases, etc., which can participate in the secondary combustion in the firing section and reduce the energy consumption; the other is that the flue gas contains moisture and sulfides, which will produce an aeration reaction on the finished bricks containing calcium oxide in the cooling section. Commonly known as brick leaching, it ensures that the finished bricks are not weathered or burst, thus ensuring the durability of the quality of the finished bricks.

[0009] The utility model considers the belt speed characteristic that hot air rises to suppress the air flow, changes the vertical desulfurization chamber into a horizontal one, and also arranges several spray water curtains, thereby fully delaying the flue gas flow rate, enabling the desulfurization liquid to fully contact and react with the flue gas, and greatly improving the desulfurization and dust removal effect.

[0010] The residual energy is the general term for waste heat and secondary combustible residual gas, that is, the residual energy includes the generated heat and the energy that can generate heat.

[0011] Preferably, the air inlet ends of each of the intake air blowers are connected with a two-position three-way valve. The three interfaces of the two-position three-way valve are respectively connected to the air inlet end of the intake air blower, the air outlet end of the flue gas return pipeline and natural air. The two valve working positions of the two-position three-way valve are respectively at the positions corresponding to connecting the flue gas return pipeline and natural air.

[0012] For the gas supply end of the roasting kiln, the most important thing is the input of air, mainly for participating in the combustion and sintering during the roasting process. However, the utility model adds a two-position three-way valve and extracts the flue gas after combustion from the drying kiln. The functions are as introduced above and will not be elaborated here. Here, the two-position three-way valve can freely adjust the air intake and flue gas intake, so as to better control the utilization of waste gas.

[0013] Preferably, each drying kiln channel is composed of a double-layer sandwich cavity wall. A drying cavity for wet blanks to pass through is formed in the inner cavity of the double-layer cavity wall, and a heat preservation cavity for the flue gas to stay is formed in the sandwich of the double-layer cavity wall. A number of air permeable holes are arranged on the inner cavity wall of the double-layer cavity wall, and a second air extraction fan is arranged on the outer cavity wall of the double-layer cavity wall. The second air extraction fan is communicated with the air inlet end of the flue gas discharge pipeline, and the air outlet end of the flue gas extraction pipeline leads directly into the drying cavity.

[0014] The double-layer cavity wall design of the drying kiln is equivalent to a cover, which has a heat-insulating effect on the drying kiln and makes it more ideal for drying wet blanks.

[0015] Preferably, the power of the second exhaust fan is smaller than the power of the first exhaust fan.

[0016] Such a design cannot destroy the negative pressure in the kiln.

[0017] Preferably, a flue gas reburning channel is added between the heating section and the cooling section on each of the roasting kiln tracks, the air inlet end of the flue gas reburning channel is on the heating section, the air outlet end of the flue gas reburning channel is on the cooling section, and a third exhaust fan is added at the air inlet end of the flue gas reburning channel.

[0018] The flue gas coming out of the heating section is sent back to the cooling section of the roasting kiln. The main purpose is that there are still combustible gases in the flue gas, such as carbon monoxide, nitrogen monochloride and alkane gases, which can participate in the secondary combustion in the firing section and reduce energy consumption.

[0019] Preferably, the power of the third exhaust fan is less than the power of the first exhaust fan.

[0020] Such a design cannot destroy the negative pressure in the kiln.

[0021] Preferably, the spray device comprises a main water supply pipe arranged along the width direction of the horizontal desulfurization flue, and the main water supply pipe is provided with two rows of front spray heads and rear spray heads arranged in parallel.

[0022] The spray device forms two water curtains in front and behind. The water source is the circulating water after adding medicine, which contains alkaline desulfurizer, allowing the desulfurization liquid and flue gas to fully contact multiple times, greatly improving the desulfurization effect, and fully absorbing the sulfur dioxide, nitrogen dioxide and particulate matter in the flue gas to meet low emission standards.

[0023] Preferably, the aeration device comprises an underwater blower for introducing air into the pool to thereby create a water surge.

[0024] The circulating water pool is equipped with an aeration device, which utilizes aeration to oxidize and decompose the desulfurized water, ensuring a stable pH value and keeping the horizontal desulfurization flue in a highly efficient desulfurization and dust reduction state.

[0025] Preferably, a circulating booster pump and a water filter are additionally provided in the circulating water pipe.

[0026] The circulating water needs to be sprayed, so a circulating booster pump is needed to pressurize it to better form a water curtain and make the smoke nowhere to escape. The water filter is mainly used to filter particles in the water to prevent the spray pipe from being blocked.

[0027] Preferably, a water quality test pool is also provided on the sixth pool.

[0028] The water quality test pool is inside the sixth pool and communicates with the latter. After the subsequent water quality test is qualified, it is safely discharged through the drain valve.

[0029] Beneficial effects: (1) In the present utility model, the flue gas coming out of the heating section enters the drying kiln to dry and preheat the wet blanks, greatly reducing the roasting time and energy consumption. At the same time, the flue gas is cooled, which is beneficial to subsequent desulfurization treatment; the flue gas coming out of the drying kiln is then sent back into the cooling section of the roasting kiln to participate in the secondary combustion in the firing section, which can reduce energy consumption; furthermore, the humid flue gas has an aeration reaction on the finished bricks in the cooling section, thus ensuring the durability of the quality of the finished bricks.

[0030] (2) The present utility model considers the belt speed characteristic that hot air rises to suppress the air flow, changes the vertical desulfurization chamber to a horizontal one, and also arranges several spray water curtains, thereby fully delaying the flue gas flow rate, enabling the desulfurization liquid to fully contact and react with the flue gas, and greatly improving the desulfurization and dust removal effects. Brief Description of the Drawings

[0031] Figure 1 is a structural schematic diagram of the present utility model;

[0032] Figure 2 is a structural schematic diagram of the flue gas waste energy recycling system of the present utility model;

[0033] Figure 3 is a structural schematic diagram of the drying kiln channel of the present utility model;

[0034] Figure 4 is a side view of the structural schematic diagram of the desulfurization, dust removal and environmental protection emission system of the present utility model;

[0035] Figure 5 is a top view of the structural schematic diagram of the desulfurization, dust removal and environmental protection emission system of the present utility model.

[0036] In the figure: 1 - drying kiln channel, 2 - roasting kiln channel, 3 - intake fan, 4 - first extraction fan, 5 - flue gas extraction pipeline, 6 - flue gas discharge pipeline, 7 - flue gas return pipeline, 8 - two-position three-way valve, 9 - third extraction fan, 10 - flue gas reburning channel, 11 - drying cavity, 12 - heat preservation cavity, 13 - second extraction fan, 14 - air permeable holes, 15 - horizontal desulfurization flue, 16 - high-altitude emission smoke tower, 17 - intake port, 18 - exhaust port, 19 - partition board, 20 - circulating water pipe, 21 - drain valve, 22 - spraying device, 23 - aeration device, 24 - chemical addition tank, 25 - water quality test pool, 26 - water supply pipe, 27 - water quality filter, 28 - circulating booster pump. Detailed Embodiments

[0037] In order to make the technical means, creative features and achieved purposes of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific embodiments.

[0038] Embodiment: As Figure 1 shown, a flue gas waste energy recycling and desulfurization and dust removal environmental protection emission system for a sintered brick tunnel kiln. The sintered brick tunnel kiln includes two drying kiln channels 1 and four roasting kiln channels 2. Among them, wet blanks pass through the drying kiln channels to form dry blanks, and the dry blanks then pass through the roasting kiln channels to form finished products. Each roasting kiln channel is divided into a heating section, a firing section and a cooling section along the advancing direction of the dry blanks. An intake air fan 3 is arranged on each cooling section, and a first exhaust air fan 4 is arranged on each heating section. Among them, the flue gas enters from the cooling section, passes through the firing section and exits from the heating section.

[0039] A flue gas waste energy recycling system and a desulfurization and dust removal environmental protection emission system are configured on the sintered brick tunnel kiln. The flue gas waste energy recycling system includes a flue gas extraction pipeline 5, a flue gas discharge pipeline 6 and a flue gas return pipeline 7. The air inlet end of the flue gas extraction pipeline 5 is connected to each first exhaust air fan 4.

[0040] As Figure 2 and Figure 3 shown, each drying kiln channel 1 is composed of a double-layer sandwich cavity wall. A drying cavity 11 for wet blanks to pass through is formed in the inner cavity of the double-layer cavity wall, and a heat preservation cavity 12 for flue gas to stay is formed in the sandwich of the double-layer cavity wall. A number of air permeable holes 14 are arranged on the inner cavity wall of the double-layer cavity wall, and a second exhaust air fan 13 is arranged on the outer cavity wall of the double-layer cavity wall. The second exhaust air fan 13 is connected to the air inlet end of the flue gas discharge pipeline 6. The air outlet end of the flue gas extraction pipeline 5 leads directly into the drying cavity 11. The power of the second exhaust air fan 13 is less than the power of the first exhaust air fan 4.

[0041] The air inlet end of the flue gas return pipeline 7 is connected to the flue gas discharge pipeline 6, and the air outlet end of the flue gas return pipeline 7 is connected to each intake air fan 3; a two-position three-way valve 8 is connected to the air inlet end of each intake air fan 3. Among them, the three interfaces of the two-position three-way valve 8 are respectively connected to the air inlet end of the intake air fan 3, the air outlet end of the flue gas return pipeline 7 and natural air. The two valve working positions of the two-position three-way valve 8 are respectively at the positions corresponding to connecting the flue gas return pipeline 7 and natural air.

[0042] A flue gas re-burning channel 10 is additionally arranged between the heating section and the cooling section on each roasting kiln channel 2. The air inlet end of the flue gas re-burning channel 10 is on the heating section, and the air outlet end of the flue gas re-burning channel 10 is on the cooling section. A third exhaust air fan 9 is additionally arranged at the air inlet end of the flue gas re-burning channel 10. The power of the third exhaust air fan 9 is less than the power of the first exhaust air fan 4.

[0043] As Figure 4 and Figure 5As shown in the figure, the desulfurization and dust removal environmental protection emission system includes a horizontal desulfurization flue 15 and a high-altitude emission chimney 16. The horizontal desulfurization flue 15 is composed of a fully enclosed horizontal box body. An air inlet 17 and an exhaust outlet 18 are respectively arranged at both ends of the horizontal desulfurization flue 15. The air inlet 17 is communicated with the air outlet end of the flue gas discharge pipe 6, and the exhaust outlet 18 is communicated with the high-altitude emission chimney 16.

[0044] The inner bottom of the horizontal desulfurization flue is divided into six pools, namely the first, second, third, fourth, fifth, and sixth pools, which are connected in a circuitous manner by five partition plates 19 along the direction of the flue gas flow. Spraying devices 22 are arranged above the first, second, third, and fourth pools. The spraying devices 22 include a main water supply pipe arranged along the width direction of the horizontal desulfurization flue, and two rows of parallel front row spray heads and rear row spray heads are arranged on the main water supply pipe.

[0045] An aeration device 23 is arranged at the inner bottom of the fifth pool. The aeration device 23 includes a submersible blower that intakes air into the pool and then creates water surges.

[0046] A chemical dosing tank 24, a water quality testing tank 25, and a drain valve 21 are arranged on the sixth pool. A circulating water pipe 20 is connected between the chemical dosing tank 24 and the spraying devices 22, and a water supply pipe 26 is arranged on the first pool.

[0047] A circulating booster pump 28 and a water quality filter 27 are additionally arranged in the pipeline of the circulating water pipe 21.

[0048] Usage: The utility model divides the sintered brick tunnel kiln into two parts, forming a drying kiln for drying wet bricks and a roasting kiln for roasting dry bricks. The direction of the dry bricks in the roasting kiln is opposite to the direction of the gas flow. The gas flow first passes through the cooling section, which can cool the finished bricks and at the same time the gas itself is heated up, and then participates in the burning in the firing section and the heating of the dry bricks in the heating section. The flue gas coming out of the heating section enters the drying kiln to dry and preheat the wet bricks, greatly reducing the roasting time and energy consumption. At the same time, the flue gas is also cooled down, which is beneficial to the subsequent desulfurization treatment. The flue gas coming out of the drying kiln is sent back into the cooling section of the roasting kiln, mainly for two purposes. One is that there are still combustible gases in the flue gas, such as carbon monoxide, nitrogen monoxide, and alkane gases, etc., which can participate in the secondary combustion in the firing section and reduce energy consumption; the other is that the flue gas contains moisture and sulfides, which have an aeration reaction with the finished bricks containing calcium oxide in the cooling section to ensure that the finished bricks do not weather or burst, thus ensuring the durability of the quality of the finished bricks. The utility model considers the belt speed characteristic of hot air rising to suppress the gas flow, changes the vertical desulfurization chamber to a horizontal one, and also arranges several spray water curtains, thereby fully delaying the flue gas flow rate, enabling the desulfurization liquid to fully contact and react with the flue gas, and greatly improving the desulfurization and dust removal effect.

Claims

1. A flue gas waste energy recycling, desulfurization, dust removal and environmental protection emission system for a sintered brick tunnel kiln. The sintered brick tunnel kiln includes at least one drying kiln passage and at least one roasting kiln passage. Wet blanks enter through the drying kiln passage to form dry blanks, and the dry blanks then enter through the roasting kiln passage to form finished products. Each of the roasting kiln passages is divided into a heating section, a firing section and a cooling section along the traveling direction of the dry blanks. An intake fan is provided on each cooling section, and a first exhaust fan is provided on each heating section. The flue gas enters from the cooling section, passes through the firing section and exits from the heating section. It is characterized in that, A flue gas waste energy recycling system and a desulfurization, dust removal and environmental protection emission system are configured on a sintered brick tunnel kiln. The flue gas waste energy recycling system includes a flue gas extraction pipeline, a flue gas discharge pipeline and a flue gas return pipeline. The air inlet end of the flue gas extraction pipeline is connected to each of the first air extraction fans, and the air outlet end of the flue gas extraction pipeline is connected to each of the drying kiln channels. The air inlet end of the flue gas discharge pipeline is connected to each of the drying kiln channels, the air inlet end of the flue gas return pipeline is connected to the flue gas discharge pipeline, and the air outlet end of the flue gas return pipeline is connected to each of the intake fans. The desulfurization, dust removal and environmental protection emission system includes a horizontal desulfurization flue and a high-altitude emission chimney. The horizontal desulfurization flue is composed of a fully enclosed horizontal box body. An air inlet and an exhaust outlet are respectively arranged at both ends of the horizontal desulfurization flue. The air inlet is connected to the air outlet end of the flue gas discharge pipeline, and the exhaust outlet is connected to the high-altitude emission chimney. The inner bottom of the horizontal desulfurization flue is divided into six pools, namely No. 1, No. 2, No. 3, No. 4, No. 5 and No. 6, which are connected in a circuitous manner by five partition plates along the flue gas traveling direction. Spraying devices are arranged above No. 1, No. 2, No. 3 and No. 4 pools, an aeration device is arranged at the inner bottom of No. 5 pool, a chemical dosing tank and a drain valve are arranged on No. 6 pool. A circulating water pipe is connected between the chemical dosing tank and the spraying device, and a water supply pipe is arranged on No. 1 pool.

2. The flue gas waste energy recycling, desulfurization and dust removal environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that, A two-way three-way valve is connected to the air inlet end of each of the intake fans. The three interfaces of the two-way three-way valve are respectively connected to the air inlet end of the intake fan, the air outlet end of the flue gas return pipeline and natural air. The two valve working positions of the two-way three-way valve are respectively at the positions corresponding to connecting the flue gas return pipeline and natural air.

3. The flue gas waste heat recycling, desulfurization, dust removal and environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that, Each of the drying kiln channels is composed of a double-layer sandwich cavity wall. A drying cavity for wet bricks to pass through is formed in the inner cavity of the double-layer cavity wall, and a heat preservation cavity for flue gas to stay is formed in the sandwich of the double-layer cavity wall. A number of air permeable holes are arranged on the inner cavity wall of the double-layer cavity wall, and a second air extraction fan is arranged on the outer cavity wall of the double-layer cavity wall. The second air extraction fan is connected to the air inlet end of the flue gas discharge pipeline, and the air outlet end of the flue gas extraction pipeline leads directly into the drying cavity.

4. The flue gas waste energy recycling, desulfurization, dust removal and environmental protection emission system for the sintered brick tunnel kiln according to claim 3, wherein, The power of the second air extraction fan is less than that of the first air extraction fan.

5. The flue gas waste energy recycling, desulfurization and dust removal environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that, A flue gas re-burning channel is added between the heating section and the cooling section on each roasting kiln channel. The air inlet end of the flue gas re-burning channel is on the heating section, and the air outlet end of the flue gas re-burning channel is on the cooling section. A third air extraction fan is added at the air inlet end of the flue gas re-burning channel.

6. The flue gas waste energy recycling, desulfurization, dust removal and environmental protection emission system for the sintered brick tunnel kiln according to claim 5, wherein, The power of the third air extraction fan is less than that of the first air extraction fan.

7. The flue gas waste energy recycling, desulfurization, dust removal and environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that The spraying device includes a main water supply pipe arranged along the width direction of the horizontal desulfurization flue. Two rows of parallel front row spray heads and rear row spray heads are arranged on the main water supply pipe.

8. The flue gas waste energy recycling, desulfurization and dust removal environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that, The aeration device includes an underwater blower that intakes air into the pool and then creates water surges.

9. The flue gas waste energy recycling, desulfurization, dust removal and environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that, A circulating booster pump and a water quality filter are added in the pipeline of the circulating water pipe.

10. The flue gas waste energy recycling, desulfurization and dust removal environmental protection emission system for the sintered brick tunnel kiln according to claim 1, characterized in that A water quality test pool is also arranged on No. 6 pool.

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