A cooling type high-efficiency flue gas desulfurization and dust removal device and method

Abstract

The present invention belongs to the technical field of flue gas desulfurization, and specifically relates to a cooling type high-efficiency flue gas desulfurization and dust removal device and method; it includes a main body; the main body further includes an absorption tower and a filtering square plate; the absorption tower is vertically installed on the ground; an intake air cooling pipe is installed on the outer side wall of the absorption tower, and the intake air cooling pipe is communicated with the absorption tower; a rotary cutting and fragmentation device is arranged inside the intake air cooling pipe; through the rotary cutting and fragmentation device, large impurities are cut into several small pieces, thereby avoiding blockage inside the intake air cooling pipe, and avoiding the impact force generated by the large impurities hitting the filtering square plate from exceeding the tolerance strength of the filtering square plate and causing its deformation, thus improving the service life and stability of the filtering square plate and the device, and at the same time avoiding the reduction of the effective flow area of the intake air cooling pipe, maintaining the flue gas volume inside it, and improving the use effect and desulfurization and dust removal effects of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of flue gas desulfurization, and specifically relates to a cooling type high-efficiency flue gas desulfurization and dust removal device and method. Background Technique

[0002] Since both coal and petroleum contain sulfur, the sulfur in both will react with oxygen to form sulfur dioxide during combustion. After these sulfur dioxides enter the atmosphere, they will undergo an oxidation reaction under certain conditions, reacting with oxygen and water vapor to form sulfuric acid. Acid rain will acidify the soil, causing a large loss of nutrient elements such as calcium, magnesium, and potassium in the soil, resulting in the growth of vegetation being affected and harming the environment. Therefore, it is necessary to treat the sulfur in the flue gas. Generally, a flue gas desulfurization and dust removal device is used to treat the sulfur element in the flue gas. It reacts with the absorbent through gas-liquid reaction and physical collision, etc., to effectively remove sulfur dioxide and soot in the flue gas and reduce environmental pollution.

[0003] When the device treats the sulfur contained in the flue gas, the flue gas will first enter the absorption tower through the inlet pipe. It is necessary to first use the absorbent to absorb and treat the sulfur dioxide in the flue gas. However, since the flue gas is just generated by the combustion of coal or petroleum, the temperature of the flue gas when it enters the absorption tower is too high. Therefore, it is necessary to cool the flue gas in the inlet pipe before entering the absorption tower to avoid the temperature of the flue gas being too high when it enters the absorption tower and affecting the desulfurization effect; however, when the existing flue gas desulfurization and dust removal device cools the flue gas, a large amount of dust particles will be carried when the flue gas enters from the inlet pipe, and there are some relatively large particle blocks among them. Therefore, a filter plate is generally set in the inlet pipe to prevent dust blocks and other particulate matters from entering the absorption tower and affecting the desulfurization efficiency of the device; however, due to the relatively fast flow rate of the flue gas in the pipeline, the relatively large particles doped in the flue gas will impact the filter plate for filtering dust particles in the inlet pipe at a relatively fast speed. If the generated impact force exceeds the tolerance strength of the filter plate, it will not only cause it to deform, but also affect the service life of the filter plate and the device. At the same time, if the number of these large impurities is too large and cannot pass through the filter plate, they will accumulate in front of it, resulting in the blockage of the inlet of the inlet pipe, and then reducing the effective flow area of the inlet pipe, reducing the flow rate of the flue gas entering the absorption tower, reducing the amount of flue gas in the absorption tower, and thus reducing the desulfurization efficiency and effect of the device, making the limitations of the device during use relatively strong. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a cooling type high-efficiency flue gas desulfurization and dust removal device and method, which effectively solves the problems in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A cooling type high-efficiency flue gas desulfurization and dust removal device, including a main body; the main body further includes an absorption tower and a filter square plate; the absorption tower is vertically installed on the ground; an intake air cooling pipe is installed on the outer side wall of the absorption tower, and the intake air cooling pipe is communicated with the absorption tower; a rotary cutting and fragmentation device is arranged in the intake air cooling pipe, and the rotary cutting and fragmentation device is used for cutting large impurities carried in the flue gas; limiting sliding grooves are symmetrically arranged on the opposite inner surfaces of the intake air cooling pipe, a limiting sliding block is slidably installed on the limiting sliding groove, and a shock reduction and stop-loss structural member is arranged on the limiting sliding block, and the shock reduction and stop-loss structural member is used for reducing the impact force received by the filter square plate during use; the filter square plate is slidably arranged in the intake air cooling pipe; a dust filtering disassembly and assembly module is further arranged on the limiting sliding block, and the dust filtering disassembly and assembly module is used for installing the filter square plate in the intake air cooling pipe; the filter square plate is used for blocking impurities doped in the flue gas flowing in the intake air cooling pipe.

[0006] Preferably, the rotary cutting and fragmentation device includes a valve flow square block arranged at the input end of the intake air cooling pipe. Two through ventilation grooves are arranged on the side surface of the valve flow square block. The ventilation grooves are arranged with a narrow inlet and a wide outlet, the wide opening is close to the filter square plate, and the narrow opening is far from the filter square plate; a ventilation pipe is further installed on the side of the ventilation groove far from the filter square plate, and the two ventilation pipes are commonly connected to a smoke pipe; an auxiliary base is further installed in the intake air cooling pipe, and the auxiliary base is located between the valve flow square block and the filter square plate; a rotary round block is installed on each of the opposite surfaces of the auxiliary base; a driving substrate is installed on each of the opposite surfaces of the two rotary round blocks. A rotary shaft is installed on the side of the driving substrate close to the valve flow square block, and a plurality of cutting fan blades are arranged on the rotary shaft. The length of the cutting fan blades is greater than the diameter of the ventilation groove; a driving motor is installed on the side of the driving substrate far from the valve flow square block, and the output end of the driving motor is connected to the rotary shaft.

[0007] Preferably, the curved surfaces of the rotary round blocks respectively face the ventilation groove and the inner top surface of the intake air cooling pipe; a plurality of rotary cutting holes are arranged on the curved surfaces of the rotary round blocks; two symmetric rotary square columns are arranged on the top of the auxiliary base, and a rotary cross plate is slidably connected to the two rotary square columns. Two symmetric rotary insertion rods are arranged on the side of the rotary cross plate close to the rotary round block, and the rotary insertion rods are connected to one of the rotary cutting holes; a rotary spring is sleeved on the rotary square column, one end of the rotary spring is connected to the rotary cross plate, and the other end is connected to a rotary limiting plate, and the rotary limiting plate is installed at the end of the rotary square column far from the auxiliary base.

[0008] Preferably, the impact reduction and stop-loss structural member includes a limit slide column installed in the limit slide groove. The limit slide column penetrates through the limit slide block and the two are slidably matched. A limit spring is sleeved on the limit slide column. One end of the limit spring is fixedly connected to the limit slide groove, and the other end is fixedly connected to the limit slide block. T-shaped shielding plates are also installed on the opposite sides of the two limit slide blocks. The crossbar of the T-shaped shielding plate is located in the limit slide groove. The long plate of the T-shaped shielding plate is attached to the outer side of the intake cooling pipe. Guide slide grooves are provided on both sides of the intake cooling pipe, and the guide slide grooves are communicated with the limit slide groove. The crossbar of the T-shaped shielding plate is slidably matched with the guide slide groove. The size of the long plate of the T-shaped shielding plate is larger than that of the guide slide groove.

[0009] Preferably, positioning square columns are further provided on the opposite sides of the long plates of the two T-shaped shielding plates. Positioning substrates are installed at both ends of the positioning square columns, and the positioning substrates are connected to the long plates of the T-shaped shielding plates. A positioning rack is commonly connected to the opposite sides of the two positioning substrates. The positioning rack is meshed with a positioning gear, and a pressure-receiving slag-removing unit is arranged on the positioning gear. A retaining base is slidably connected to the positioning square column, and the retaining base is installed on the intake cooling pipe. A positioning spring is sleeved on the positioning square column. One end of the positioning spring is connected to the positioning substrate, and the other end is connected to the retaining base.

[0010] Preferably, the dust filtering disassembly and assembly module includes sliding slots provided on the opposite surfaces of the two limit slide blocks. A moving inclined block slides in the sliding slots. The opposite surfaces of the moving inclined block are both inclined planes and are located inside the intake cooling pipe. The side surface of the moving inclined block is on the moving path of the edge of the filtering square plate. Moving square columns are installed on the opposite sides of the two moving inclined blocks. The moving square columns pass through the moving inclined blocks and the endpoints of the T-shaped shielding plates are connected to a moving pull plate, and the moving pull plate is located outside the intake cooling pipe. A moving spring is sleeved on the moving square column. One end of the moving spring is connected to the moving inclined block, and the other end is connected to the inner wall of the limit slide groove. A number of penetrating moving locking grooves are also provided on the moving square column.

[0011] Preferably, the dust filtering disassembly and assembly module further includes an auxiliary moving base provided on the side of the T-shaped shielding plate away from the intake cooling pipe. A locking slide rod is slidably connected to the auxiliary moving base. A locking limit plate is further installed at the end of the locking slide rod away from the auxiliary moving base. A locking spring is sleeved on the locking slide rod. One end of the locking spring is connected to the locking limit plate, and the other end is connected to the auxiliary moving base. One of the moving locking grooves is on the moving path of the locking slide rod. A locking slot is further provided on the side of the filtering square plate close to the moving inclined block. The locking slot is on the moving path of the moving inclined block and the two are fitted.

[0012] Preferably, the pressure slag cleaning unit includes a driving rotating shaft disposed on the positioning gear, and a first base is installed on the driving rotating shaft. The first base is disposed on the intake air cooling pipe; one end of the driving rotating shaft away from the positioning gear is further connected to a driving gear, the driving gear is meshed with a driving rack, and a second base is slidably connected to the driving rack. The second base is disposed on the intake air cooling pipe; a bent square rod is installed on the driving rack; the two bent square rods are commonly connected to a pressure square plate, and two pressure square cylinders are symmetrically installed on one side of the pressure square plate close to the intake air cooling pipe. One end of the pressure square cylinder passing through the top of the intake air cooling pipe and located inside is further slidably connected to a pressure square column.

[0013] Preferably, one end of the two pressure square columns away from the pressure square plate is commonly connected to a cleaning plate; a discharge channel having the same size as the cleaning plate is provided at the bottom of the intake air cooling pipe, and a valve is provided on the discharge channel; one side of the discharge channel extends to the bottom of the intake air cooling pipe, and the other side extends to the inner bottom of the intake air cooling pipe; a pressure spring is further provided in the pressure square cylinder, one end of the pressure spring is connected to the inner wall of the pressure square cylinder, and the other end is connected to the pressure square column; contact pieces are provided on the opposite surfaces of the cleaning plate and the pressure square column.

[0014] The present invention also provides a cooling type high-efficiency flue gas desulfurization and dust removal method, which includes the following steps:

[0015] Step 1, the flue gas enters the absorption tower through the intake air cooling pipe to control the temperature of the flue gas;

[0016] Step 2, the filter square plate is installed in the intake air cooling pipe through the dust filtering disassembly and assembly module for filtering impurities doped in the flue gas;

[0017] Step 3, when the impurities in the flue gas pass through the filter square plate, they will impact the filter square plate, and the impact force received by the filter square plate during use can be reduced under the action of the impact reduction and stop loss structural member;

[0018] Step 4, operate the rotary cutting and splitting device to cut the impurities doped in the flue gas into several small pieces.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) Start the drive motor so that its output end drives the rotating shaft to rotate, and several cutting fan blades on it rotate rapidly. When the flue gas passes through the several cutting fan blades, the large impurities doped in the flue gas with reduced flow velocity can be cut, so that the large impurities are cut into several small pieces. Since the large impurities are cut into several small pieces, their mass decreases, thus greatly reducing the impact force caused when the large impurities impact the filter square plate. At the same time, since the rotating direction of the several cutting fan blades is the same as the flowing direction of the flue gas, the operation of guiding the flue gas can be carried out, and at the same time, the flowing speed of the above-mentioned flue gas with reduced flow velocity will be further increased, avoiding the influence on the flow rate of the flue gas entering the absorption tower. At this time, the flue gas after acceleration does not contain large impurities, so it will not cause impact damage to the filter square plate, further improving the service life and stability of the filter square plate. At the same time, cutting the large impurities into several small pieces can avoid blocking the inside of the intake cooling pipe, preventing the effective flow area of the intake cooling pipe from being reduced and unable to reduce the flow rate of the flue gas entering the absorption tower, so that the amount of flue gas in it can be maintained, improving the use effect of the device and the desulfurization and dust removal effects;

[0021] (2) The filter square plate is limited to move at the limiting slider, limiting chute and limiting sliding column, so as to unload the above-mentioned impact force, avoiding the rigid contact between the filter square plate and the above-mentioned impact force, which may cause the deformation of the filter square plate. The moving limiting slider makes the positioning square column on it move in a limited way on the positioning substrate under the action of the T-shaped shielding plate, so as to limit the movement of the filter square plate, avoiding the dislocation or shaking of the filter square plate when it is impacted, and improving the stability of the filter square plate during use and movement; At the same time, the movement of the filter square plate makes the limiting spring and the positioning spring in a buffer state, and the buffer force brought can further reduce the impact force caused to the filter square plate. When the impact force becomes smaller, the force on the filter square plate becomes smaller, and the reset of the limiting spring and the positioning spring can drive the filter square plate to reset, so as to absorb the impact force, that is, energy, caused by the impurities in the flue gas to the filter square plate, and release the kinetic energy received by the filter square plate after converting it into elastic potential energy, enabling it to face the impurities in the flue gas next time, avoiding a large amount of impurities entering the absorption tower and affecting the desulfurization efficiency of the flue gas, and at the same time improving the service life and effect of the filter square plate, making the desulfurization and dust removal effect of the device improved, and avoiding the impurities in the flue gas from entering the absorption tower together;

[0022] (3) When the flue gas enters the intake cooling pipe, it will first be shunted through two ventilation pipes respectively, so that the flow rate of the flue gas when it enters the absorption tower is uniform. Multiple channels are set to enter the absorption tower for desulfurization of the flue gas, avoiding the situation that the device cannot continue to be used due to the blockage of one channel. Each channel undertakes a part of the flow rate, so that more flue gas can be processed, improving the intake efficiency in the absorption tower, thus enhancing the desulfurization efficiency of the device and reducing the limitations of the device during use. Even if one channel, that is, the flue gas inlet pipe, is blocked, the device can still continuously desulfurize the flue gas through the intake of the other channel, avoiding the need to shut down the device to clean the blocked part in the ventilation pipe and improving the use effect of the device. At the same time, the flue gas in the ventilation pipe enters the intake cooling pipe through the ventilation slot, and then the intake cooling pipe sends the cooled flue gas into the absorption tower. Since the ventilation slot is designed with a narrow inlet and a wide outlet, when the flue gas enters the wide-channel from the narrow opening, the cross-sectional area increases, and its flow velocity decreases under the condition of constant flue gas flow rate, thus reducing the movement speed of the impurities doped in the flue gas. Avoiding the fast flow velocity of the flue gas causing the impurities doped in it to hit the filter square plate at a fast speed and damage it, and avoiding the impact force generated by the impact exceeding the tolerance strength of the filter square plate and causing it to deform, thereby improving the service life and stability of the filter square plate and the device.

[0023] (4) After the contact piece on the opposite surface of the cleaning plate and the pressure square column comes into contact (this situation indicates that the filter square plate has been impacted by a large impurity block), the valve can be opened through the transmission of an electrical signal, so that a large amount of impurities (including the above-mentioned large impurities) wrapped at the place of the box-shaped cleaning plate are discharged to the outside through the discharge channel, avoiding these impurities and the large impurities that survived the rotary cutting and shredding device from being located in the intake cooling pipe and affecting the flow efficiency of the flue gas. When the filter square plate moves back to its original position, it can drive the cleaning plate to move back to its original position, making it wait to be used when the filter square plate is impacted by other large impurities next time. Thus, the impurities accumulated in the intake cooling pipe can be regularly cleaned, avoiding the need for manual cleaning by staff, reducing the work intensity of the staff, improving the use effect of the device and ensuring the flow rate of the flue gas, so that the desulfurization effect and efficiency of the device on the flue gas are also guaranteed. At the same time, the filter square plate that moves back to its original position can push the impurities in front of it to the upper part of the discharge channel with the reset of the filter square plate and wait for the next cleaning operation, reducing the limitations of the device during use.

[0024] (5) Rotating the rotary circular block can also drive several cutting fan blades to rotate. At the same time, the rotary circular block can also be arranged on the auxiliary base, so that the cutting fan blades can rotate at multiple angles. When the flue gas is guided by the rotation of several cutting fan blades, the flue gas can be guided to different positions of the filter square plate, avoiding a certain part of the filter square plate from being impacted for a long time due to the rotation of several cutting fan blades during the flue gas guiding process, resulting in serious wear of this part of the filter square plate. This enables each part of the filter square plate to be evenly worn, avoiding serious wear at a certain part due to long-term stress, which causes the filter square plate to be unable to be used continuously, improving the service life and effect of the filter square plate. At the same time, it expands the working range of the cutting fan blades, enabling them to cut impurities in the flue gas at different angles, reducing the limitations of the device during use; when it is necessary to adjust the working angle of the cutting fan blades, just pull up the rotating cross plate, so that it moves limitedly on the rotating square column, making the rotating spring in a buffered state. Then, the rotating insertion rod on the rotating cross plate is no longer connected to the rotary cutting hole on the surface of the rotary circular block, thus releasing the limit setting of the rotary circular block and enabling the cutting fan blades to smoothly adjust the angle; when the operator completes the angle adjustment of the cutting fan blades, just release the rotating cross plate, and the reset of the rotating spring drives the rotating insertion rod to reset and move, making it connected to one of the rotary cutting holes, thus limiting the rotary circular block at the current angle, avoiding phenomena such as shaking or dislocation of the cutting fan blades during use, improving the cutting effect of the cutting fan blades on impurities, and reducing the limitations of the device during use.

[0025] (6) There are two inclined surfaces on the position-moving inclined block, enabling the filter square plate to be installed at either end of the intake cooling pipe. At the same time, the installation and disassembly process of the filter square plate can be completed without tools, and the whole process is convenient and fast, improving the installation efficiency of the filter square plate, enabling the device to easily use different models or functions of filter square plates according to different filtering effects and usage requirements, and facilitating its cleaning and maintenance, avoiding the difficulty of disassembling the filter square plate due to the lack of suitable tools, and reducing the limitations of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention.

[0027] In the drawings:

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic diagram of the structure of the intake cooling pipe of the present invention;

[0030] Figure 3Cross-sectional view of the valve flow square of the present invention;

[0031] Figure 4 Cross-sectional view of the filter square plate of the present invention;

[0032] Figure 5 Cross-sectional view of the absorption tower of the present invention;

[0033] Figure 6 Schematic diagram of the structure of the rotating circular block of the present invention;

[0034] Figure 7 Schematic diagram of the structure of the discharge channel of the present invention;

[0035] Figure 8 Exploded view of the position moving inclined block of the present invention;

[0036] Figure 9 Schematic diagram of the structure of the positioning square column of the present invention;

[0037] Figure 10 Cross-sectional view of the limiting sliding groove of the present invention;

[0038] Figure 11 Schematic diagram of the internal structure of the limiting sliding block of the present invention;

[0039] Figure 12 Cross-sectional view of the pressure square cylinder of the present invention;

[0040] Figure 13 Exploded view of the sliding slot opening of the present invention;

[0041] In the figure: 1, body; 2, absorption tower; 3, filter square plate; 4, intake air cooling pipe; 5, limiting sliding groove; 6, limiting sliding block; 7, valve flow square; 8, ventilation groove; 9, ventilation pipe; 10, smoke pipe; 11, auxiliary base; 12, rotating circular block; 13, active base plate; 14, rotating shaft; 15, cutting fan blade; 16, driving motor; 17, rotary cutting hole; 18, rotating square column; 19, rotating cross plate; 20, rotating insertion rod; 21, rotating spring; 22, limiting sliding column; 23, limiting spring; 24, T-shaped shielding plate; 25, guiding sliding groove; 26, positioning square column; 27, positioning base plate; 28, positioning rack; 29, positioning gear; 30, fixing base; 31, positioning spring; 32, sliding slot opening; 33, position moving inclined block; 34, position moving square column; 35, position moving pull plate; 36, position moving spring; 37, position moving locking groove; 38, auxiliary moving base; 39, locking sliding rod; 40, locking limiting plate; 41, locking spring; 42, locking position groove; 43, driving rotating shaft; 44, first base; 45, driving gear; 46, driving rack; 47, second base; 48, bent square rod; 49, pressure square plate; 50, pressure square cylinder; 51, pressure square column; 52, cleaning plate; 53, discharge channel; 54, pressure spring. Detailed implementation manners

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0043] Example, consisting of Figures 1 to 13Provided, the present invention includes a main body 1; the main body 1 further includes an absorption tower 2 and a filtering square plate 3; the absorption tower 2 is vertically installed on the ground; an intake air cooling pipe 4 is installed on the outer side wall of the absorption tower 2, and the intake air cooling pipe 4 is communicated with the absorption tower 2; a rotary cutting and splitting device is arranged inside the intake air cooling pipe 4, and the rotary cutting and splitting device is used for cutting large impurities carried in the flue gas; limiting sliding grooves 5 are symmetrically arranged on the opposite inner surfaces of the intake air cooling pipe 4, a limiting sliding block 6 is slidably installed on the limiting sliding grooves 5, and a shock reduction and stop-loss structural member is arranged on the limiting sliding block 6, and the shock reduction and stop-loss structural member is used for reducing the impact force received by the filtering square plate 3 during use; the filtering square plate 3 is slidably arranged inside the intake air cooling pipe 4; a dust filtering disassembly and assembly module is further arranged on the limiting sliding block 6, and the dust filtering disassembly and assembly module is used for installing the filtering square plate 3 inside the intake air cooling pipe 4; the filtering square plate 3 is used for blocking impurities doped in the flue gas flowing inside the intake air cooling pipe 4; the rotary cutting and splitting device includes a valve flow square block 7 arranged inside the input end of the intake air cooling pipe 4, two through ventilation grooves 8 are arranged on the side surface of the valve flow square block 7, the ventilation grooves 8 are arranged with a narrow inlet and a wide outlet, the wide opening is close to the filtering square plate 3, and the narrow opening is far from the filtering square plate 3; a ventilation pipe 9 is further installed on the side of the ventilation groove 8 far from the filtering square plate 3, and the two ventilation pipes 9 are jointly connected to a smoke pipe 10; an auxiliary base 11 is further installed inside the intake air cooling pipe 4, and the auxiliary base 11 is located between the valve flow square block 7 and the filtering square plate 3; a rotary circular block 12 is installed on each of the opposite surfaces of the auxiliary base 11; a driving substrate 13 is installed on each of the opposite surfaces of the two rotary circular blocks 12, a rotary shaft 14 is installed on the side of the driving substrate 13 close to the valve flow square block 7, and a plurality of cutting fan blades 15 are arranged on the rotary shaft 14, and the length of the cutting fan blades 15 is greater than the diameter of the ventilation groove 8; a driving motor 16 is installed on the side of the driving substrate 13 far from the valve flow square block 7, and the output end of the driving motor 16 is connected to the rotary shaft 14; the curved surfaces of the rotary circular blocks 12 face the ventilation groove 8 and the inner top surface of the intake air cooling pipe 4 respectively; a plurality of rotary cutting holes 17 are arranged on the curved surfaces of the rotary circular blocks 12; two symmetric rotary square columns 18 are arranged on the top of the auxiliary base 11, a rotary cross plate 19 is jointly slidably connected to the two rotary square columns 18, two symmetric rotary insertion rods 20 are arranged on the side of the rotary cross plate 19 close to the rotary circular block 12, and the rotary insertion rods 20 are connected to one of the rotary cutting holes 17; a rotary spring 21 is sleeved on the rotary square column 18, one end of the rotary spring 21 is connected to the rotary cross plate 19, and the other end is connected to a rotary limiting plate, and the rotary limiting plate is installed at the end of the rotary square column 18 far from the auxiliary base 11;

[0044] The flue gas enters the intake air cooling pipe 4 through the flue pipe 10 to reduce the temperature of the flue gas, avoiding a reduction in the working efficiency of the device due to inappropriate temperature when the flue gas enters the absorption tower 2 for desulfurization and dust removal operations; at the same time, when the flue gas enters the intake air cooling pipe 4, it will first be shunted through two vent pipes 9 respectively, so that the flow rate of the flue gas when it enters the absorption tower 2 is uniform. Multiple channels are set to enter the absorption tower 2 for desulfurization of the flue gas, avoiding the situation where the device cannot continue to be used due to blockage of one channel, enabling each channel to bear a part of the flow rate, so that more flue gas can be processed, improving the intake efficiency in the absorption tower 2, thus enhancing the desulfurization efficiency of the device and reducing the limitations of the device during use. Even if one channel, that is, the flue inlet pipe, is blocked, the device can still continue to desulfurize the flue gas through the intake of the other channel, avoiding the need to shut down the device to clean the blocked part in the vent pipe 9 and improving the use effect of the device; at the same time, the flue gas in the vent pipe 9 enters the intake air cooling pipe 4 through the ventilation slot 8, and then the cooled flue gas is sent into the absorption tower 2 by the intake air cooling pipe 4. Since the ventilation slot 8 is designed with a narrow inlet and a wide outlet, when the flue gas enters the wide-channel from the narrow opening, the cross-sectional area increases, and its flow velocity decreases under the condition of constant flue gas flow rate, thus reducing the movement speed of the impurities doped in the flue gas, avoiding the situation where the relatively fast flow velocity of the flue gas causes the doped impurities to hit the filter square plate 3 at a relatively fast speed and damage it, and preventing the impact force generated by the impact from exceeding the tolerance strength of the filter square plate 3 and causing its deformation, thereby enhancing the service life and stability of the filter square plate 3 and the device;

[0045] At the same time, after the flow velocity of the flue gas decreases, by starting the drive motor 16, its output end drives the rotating shaft 14 to rotate, and several cutting blades 15 on it rotate rapidly. When the flue gas passes through several cutting blades 15, the large impurities doped in the flue gas with reduced flow velocity can be cut, and the large impurities are cut into several small pieces. Since the large impurities are cut into several small pieces, their mass decreases, thus greatly reducing the impact force caused when the large impurities hit the filter square plate 3. At the same time, since the rotation direction of several cutting blades 15 is the same as the flow direction of the flue gas, the operation of guiding the flue gas can be carried out, and at the same time, it will further accelerate the flow velocity of the above-mentioned flue gas with reduced flow velocity, avoiding the influence on the flow rate of the flue gas entering the absorption tower 2. At this time, the flue gas after acceleration does not contain large impurities, so it will not cause impact and damage to the filter square plate 3, further enhancing the service life and stability of the filter square plate 3. At the same time, after cutting the large impurities into several small pieces, it can avoid blocking the inside of the intake air cooling pipe 4, preventing the effective flow area of the intake air cooling pipe 4 from being reduced and unable to reduce the flow rate of the flue gas entering the absorption tower 2, keeping the amount of flue gas in it, and improving the use effect and desulfurization and dust removal effects of the device;

[0046] It is worth mentioning that by rotating the rotating circular block 12, a number of cutting fan blades 15 can also be driven to rotate. At the same time, the rotating circular block 12 can also be arranged on the auxiliary base 11, so that the cutting fan blades 15 can rotate at multiple angles. When the flue gas is guided by the rotation of the number of cutting fan blades 15, the flue gas can be guided to different positions of the filter square plate 3, avoiding the situation that a certain part of the filter square plate 3 is continuously impacted by the rotation of the number of cutting fan blades 15 during the flue gas guiding process, resulting in serious wear of this part of the filter square plate 3. This enables each part of the filter square plate 3 to be evenly worn, avoiding the situation that a certain part is severely worn due to long-term stress, making the filter square plate 3 unable to be used continuously, improving the service life and effect of the filter square plate 3. At the same time, the working range of the cutting fan blades 15 is expanded, enabling them to cut impurities in the flue gas at different angles, reducing the limitations of the device during use; when it is necessary to adjust the working angle of the cutting fan blades 15, just pull up the rotating cross plate 19, so that it moves in a limited way on the rotating square column 18, making the rotating spring 21 in a buffered state. Then, the rotating insertion rod 20 on the rotating cross plate 19 is no longer connected to the rotary cutting hole 17 on the curved surface of the rotating circular block 12, thus releasing the limit setting on the rotating circular block 12, enabling the cutting fan blades 15 to smoothly adjust the angle; when the operator completes the angle adjustment of the cutting fan blades 15, just release the rotating cross plate 19, so that the reset of the rotating spring 21 drives the rotating insertion rod 20 to move back to its original position, making it connect with one of the rotary cutting holes 17, thus limiting the rotating circular block 12 at the current angle, avoiding phenomena such as shaking or dislocation of the cutting fan blades 15 during use, improving the cutting effect of the cutting fan blades 15 on impurities, and at the same time reducing the limitations of the device during use.

[0047] The impact-reducing and stop-loss structural member of this embodiment includes a limit slide post 22 installed in the limit slide groove 5. The limit slide post 22 penetrates through the limit slide block 6 and the two are slidably matched; a limit spring 23 is sleeved on the limit slide post 22. One end of the limit spring 23 is fixedly connected to the limit slide groove 5, and the other end is fixedly connected to the limit slide block 6; T-shaped shielding plates 24 are also installed on the opposite sides of the two limit slide blocks 6; the crossbar of the T-shaped shielding plate 24 is located in the limit slide groove 5; the long plate of the T-shaped shielding plate 24 is attached to the outer side of the intake air cooling pipe 4; guide slide grooves 25 are provided on both sides of the intake air cooling pipe 4, and the guide slide grooves 25 communicate with the limit slide groove 5; the crossbar of the T-shaped shielding plate 24 is slidably matched with the guide slide groove 25; the size of the long plate of the T-shaped shielding plate 24 is larger than that of the guide slide groove 25; positioning square columns 26 are also provided on the opposite sides of the long plates of the two T-shaped shielding plates 24. Positioning base plates 27 are installed at both ends of the positioning square column 26, and the positioning base plates 27 are connected to the long plate of the T-shaped shielding plate 24; a positioning rack 28 is commonly connected to the opposite sides of the two positioning base plates 27. The positioning rack 28 is meshed with a positioning gear 29, and a pressure-receiving slag-removing unit is arranged on the positioning gear 29; a retaining base 30 is slidably connected to the positioning square column 26, and the retaining base 30 is installed on the intake air cooling pipe 4; a positioning spring 31 is sleeved on the positioning square column 26. One end of the positioning spring 31 is connected to the positioning base plate 27, and the other end is connected to the retaining base 30;

[0048] When the flue gas and the impurities carried by it impact the filter square plate 3, it is subjected to an impact force. Subsequently, the filter square plate 3 is limited and moved through the limit slide block 6 at the limit slide groove 5 and the limit slide post 22, so as to unload the above-mentioned impact force, and avoid the filter square plate 3 being in rigid contact with the above-mentioned impact force, resulting in deformation of the filter square plate 3. The moving limit slide block 6 enables the positioning square column 26 on it to be limited and moved on the positioning base plate 27 under the action of the T-shaped shielding plate 24, so as to limit the movement of the filter square plate 3, and avoid the filter square plate 3 being dislocated or shaking when being impacted, improving the stability of the filter square plate 3 during use and movement; at the same time, the movement of the filter square plate 3 makes the limit spring 23 and the positioning spring 31 in a buffered state, and the resulting buffer force further reduces the impact force on the filter square plate 3. When the impact force becomes smaller, the force on the filter square plate 3 becomes smaller. The reset of the limit spring 23 and the positioning spring 31 can drive the filter square plate 3 to reset, so as to absorb the impact force, that is, the energy, caused by the impurities in the flue gas on the filter square plate 3, and release the kinetic energy received by the filter square plate 3 after converting it into elastic potential energy, enabling it to face the impurities in the flue gas next time, avoiding a large amount of impurities from entering the absorption tower 2 and affecting the desulfurization efficiency of the flue gas, and at the same time improving the service life and effect of the filter square plate 3, improving the desulfurization and dust removal effect of the device, and avoiding the impurities in the flue gas from entering the absorption tower 2 together.

[0049] The dust filtering disassembly and assembly module of this embodiment includes sliding grooves 32 provided on the opposite surfaces of two limiting sliders 6. A displacement inclined block 33 slides in the sliding groove 32. The opposite surfaces of the displacement inclined block 33 are both inclined planes and are located inside the intake air cooling pipe 4. The side surfaces of the displacement inclined block 33 are located on the movement paths at the edges of the filtering square plate 3. Displacement square columns 34 are installed on the opposite surfaces of the two displacement inclined blocks 33. The displacement square columns 34 pass through the displacement inclined blocks 33 and are connected to a displacement pull plate 35 at the endpoints of the T-shaped shielding plate 24. The displacement pull plate 35 is located outside the intake air cooling pipe 4. A displacement spring 36 is sleeved on the displacement square column 34. One end of the displacement spring 36 is connected to the displacement inclined block 33, and the other end is connected to the inner wall of the limiting sliding groove 5. A number of through displacement locking grooves 37 are also provided on the displacement square column 34. The dust filtering disassembly and assembly module further includes an auxiliary movement base 38 provided on the side of the T-shaped shielding plate 24 away from the intake air cooling pipe 4. A locking slide rod 39 is slidably connected to the auxiliary movement base 38. A locking limiting plate 40 is also installed at the end of the locking slide rod 39 away from the auxiliary movement base 38. A locking spring 41 is sleeved on the locking slide rod 39. One end of the locking spring 41 is connected to the locking limiting plate 40, and the other end is connected to the auxiliary movement base 38. One of the displacement locking grooves 37 is located on the movement path of the locking slide rod 39. A locking position groove 42 is further provided on the side of the filtering square plate 3 close to the displacement inclined block 33. The locking position groove 42 is located on the movement path of the displacement inclined block 33 and they are in fit with each other.

[0050] By pulling the lock-actuating limiting plate 40 outwards, the lock-actuating sliding rod 39 thereon is limited to move on the auxiliary-actuating base 38, so that the lock-actuating spring 41 is in a buffered state. Subsequently, the lock-actuating sliding rod 39 is no longer connected to the position-actuating lock groove 37, thereby releasing the limiting setting for the position-actuating inclined block 33. By pulling the position-actuating square column 34 outwards, the position-actuating inclined block 33 can be limited to move in the sliding groove opening 32, so that the position-actuating spring 36 is in a buffered state, and thus the position-actuating inclined block 33 is no longer connected to the locking position groove 42, enabling the limiting setting for the filtering square plate 3 to be released, and thereby disassembling the filtering square plate 3 from the intake air cooling pipe 4; when the filtering square plate 3 needs to be installed, by moving the filtering square plate 3 in the intake air cooling pipe 4 so that its side edge contacts the inclined surface of the position-actuating inclined block 33 located in the intake air cooling pipe 4, thereby exerting pressure on the position-actuating inclined block 33, causing it to be limited to move in the sliding groove opening 32, so that the position-actuating spring 36 is in a buffered state, and until the position-actuating inclined block 33 is completely located in the sliding groove opening 32; by continuing to push the filtering square plate 3, when the position-actuating inclined block 33 is completely aligned with the locking position groove 42, the position-actuating inclined block 33 is no longer limited, and the position-actuating inclined block 33 is driven to reset by the reset of the position-actuating spring 36, enabling it to enter the locking position groove 42, thereby fixing the filtering square plate 3 in the current position, and thus completing the installation operation of the filtering square plate 3; at the same time, when the originally pulled lock-actuating limiting plate 40 is released after the filtering square plate 3 is installed, the lock-actuating sliding rod 39 can be driven to reset and move by the reset of the lock-actuating spring 41, so that it is connected to the position-actuating lock groove 37, thereby limiting the position-actuating inclined block 33 in the current position and preventing it from releasing the limiting setting for the filtering square plate 3, avoiding phenomena such as dislocation of the filtering square plate 3 during use, and enhancing the safety of the filtering square plate 3 during use; it is worth mentioning that there are two inclined surfaces on the position-actuating inclined block 33, enabling the filtering square plate 3 to be installed at either end of the intake air cooling pipe 4. At the same time, the installation and disassembly process of the filtering square plate 3 can be completed without tools, and the whole process is convenient and fast, enhancing the installation efficiency of the filtering square plate 3, enabling the device to easily use different models or functions of the filtering square plate 3 according to different filtering effects and usage requirements, and at the same time facilitating its cleaning and maintenance, avoiding the difficulty of disassembling the filtering square plate 3 due to the lack of suitable tools at hand, and reducing the limitations of the device during use.

[0051] The pressure cleaning and slag removal unit of this embodiment includes a driving rotating shaft 43 arranged on the positioning gear 29. A first base 44 is installed on the driving rotating shaft 43, and the first base 44 is arranged on the intake air cooling pipe 4. One end of the driving rotating shaft 43 far from the positioning gear 29 is also connected with a driving gear 45. The driving gear 45 is meshed and connected with a driving rack 46. A second base 47 is slidably connected to the driving rack 46, and the second base 47 is arranged on the intake air cooling pipe 4. A bent square rod 48 is installed on the driving rack 46. Two bent square rods 48 are commonly connected with a pressure square plate 49. On one side of the pressure square plate 49 close to the intake air cooling pipe 4, two pressure square cylinders 50 are symmetrically installed. One end of the pressure square cylinder 50 passing through the top of the intake air cooling pipe 4 and located inside it is also slidably connected with a pressure square column 51. One end of the two pressure square columns 51 far from the pressure square plate 49 is commonly connected with a cleaning plate 52. A discharge channel 53 with the same size as the cleaning plate 52 is provided at the bottom of the intake air cooling pipe 4, and a valve is arranged on the discharge channel 53. One side of the discharge channel 53 extends to the bottom of the intake air cooling pipe 4, and the other side extends to the inner bottom of the intake air cooling pipe 4. A pressure spring 54 is also arranged in the pressure square cylinder 50. One end of the pressure spring 54 is connected with the inner wall of the pressure square cylinder 50, and the other end is connected with the pressure square column 51. Contact pieces are arranged on the opposite surfaces of the cleaning plate 52 and the pressure square column 51.

[0052] When the filter square plate 3 moves after being impacted again, it will drive the T-shaped baffle 24 to move at the same time, causing the positioning rack 28 on it to move together, making the meshing positioning gear 29 rotate. Under the action of the driving rotating shaft 43 and the driving gear 45, the meshing driving rack 46 moves downward, driving the pressure square plate 49 to move downward through the bent square rod 48. Under the action of the pressure square cylinder 50 and the pressure square column 51, the cleaning plate 52 is driven to move downward. The size of the cleaning plate 52 is the same as that of the discharge channel 53. When the cleaning plate 52 fits against the valve on the discharge channel 53, it is worth mentioning that the cleaning plate 52 can be set in a box shape, so as to wrap a large amount of impurities accumulated in front of the filter square plate 3 at the initial position inside the box of the cleaning plate 52, preventing the flue gas from driving the impurities to move continuously during circulation and avoiding flue gas leakage at the same time. When the pressure square plate 49 continues to move, the pressure square cylinder 50 on it moves in a limited position on the pressure square column 51, making the pressure spring 54 in a buffered state. At the same time, after the contacts on the opposite surfaces of the cleaning plate 52 and the pressure square column 51 come into contact (this situation indicates that the filter square plate 3 is impacted by a relatively large impurity block), the valve can be opened through the transmission of an electrical signal, enabling a large amount of impurities (including the above-mentioned large impurity blocks) wrapped at the position of the box-shaped cleaning plate 52 to be discharged to the outside through the discharge channel 53, preventing these impurities and the large impurity blocks that survived the rotary cutting and fragmentation device from affecting the flue gas circulation efficiency in the intake cooling pipe 4. When the filter square plate 3 moves back to its original position, it can drive the cleaning plate 52 to move back to its original position, waiting for the next time the filter square plate 3 is impacted by other large impurity blocks for use. Thus, the impurities accumulated in the intake cooling pipe 4 can be regularly cleaned, avoiding the need for manual cleaning by staff, reducing the work intensity of the staff, improving the use effect of the device and ensuring the flue gas circulation rate at the same time, ensuring the desulfurization effect and efficiency of the flue gas by the device, and enabling the reset moving filter square plate 3 to push the impurities in front of it to the upper part of the discharge channel 53 with the reset of the filter square plate 3, waiting for the next cleaning operation, reducing the limitations of the device during use.

[0053] The present invention also provides a cooling type high-efficiency flue gas desulfurization and dust removal method, including the following steps:

[0054] Step 1: The flue gas enters the absorption tower 2 through the intake cooling pipe 4 to control the temperature of the flue gas;

[0055] Step 2: The filter square plate 3 is installed in the intake cooling pipe 4 through the dust filter disassembly and assembly module for filtering impurities doped in the flue gas;

[0056] Step 3: When the impurities in the flue gas pass through the filter square plate 3, they will impact the filter square plate 3, and under the action of the impact reduction and loss prevention structural member, the impact force received by the filter square plate 3 during use can be reduced;

[0057] Step 4: Operate the rotary cutting and splitting device to cut the impurities doped in the flue gas into several small pieces.

[0058] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling type high-efficiency flue gas desulfurization and dust removal device, comprising a body; characterized in that: The main body also includes an absorption tower and a filter square plate; the absorption tower is vertically installed on the ground; an air intake cooling pipe is installed on the outer wall of the absorption tower, and the air intake cooling pipe is connected to the absorption tower; a rotary cutting and crushing device is arranged in the air intake cooling pipe, and the rotary cutting and crushing device is used to cut large impurities carried in the flue gas; limit slide grooves are symmetrically arranged on the opposite surfaces inside the air intake cooling pipe, and a limited motion slider is slidably installed on the limit slide groove, and a shock reduction and loss stop structure is arranged on the limit slider, and the shock reduction and loss stop structure is used to reduce the impact force on the filter square plate when in use; the filter square plate is slidably arranged in the air intake cooling pipe; a dust filter disassembly and assembly module is also arranged on the limit slider, and the dust filter disassembly and assembly module is used to install the filter square plate in the air intake cooling pipe; the filter square plate is used to block impurities mixed in the flue gas circulating in the air intake cooling pipe; The rotary cutting and fragmentation device includes a valve flow block arranged in the input end of the intake cooling pipe; An auxiliary base is also installed in the intake cooling pipe, and the auxiliary base is located between the valve flow block and the filter square plate; a rotating round block is installed on the opposite surface of the auxiliary base; an active substrate is installed on the opposite surface of the two rotating round blocks, and a rotating shaft is installed on the side of the active substrate close to the valve flow block, and a plurality of cutting fan blades are arranged on the rotating shaft; The curved surface of the rotating circular block faces the ventilation groove and the inner top surface of the air intake cooling pipe respectively; a plurality of rotary cutting holes are arranged on the curved surface of the rotating circular block; two symmetrical rotary square columns are arranged on the top of the auxiliary base, and the two rotary square columns are slidably connected with a rotary horizontal plate; two symmetrically arranged rotary plug rods are arranged on one side of the rotary horizontal plate close to the rotating circular block, and the rotary plug rod is connected with one of the rotary cutting holes; T-shaped shielding plates are also installed on the opposite back surfaces of the two limit sliders; The two T-shaped baffle plates are provided with positioning square columns on the opposite sides of the long plates, and positioning base plates are installed at both ends of the positioning square columns, which are connected to the long plates of the T-shaped baffle plates; the two positioning base plates are connected with a positioning rack on the opposite sides, and the positioning rack is meshed with a positioning gear, and a pressurized slag cleaning unit is provided on the positioning gear; a fixing base is slidably connected to the positioning square column, and the fixing base is installed on the air intake cooling pipe; a positioning spring is sleeved on the positioning square column, and one end of the positioning spring is connected to the positioning base plate, and the other end is connected to the fixing base.

2. A cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 1, characterized in that: Two through ventilation grooves are provided on the side of the valve flow block, and the ventilation grooves are set to be narrow at the entrance and wide at the exit, with the wide opening close to the filter square plate and the narrow opening away from the filter square plate; a ventilation pipe is also installed on the side of the ventilation groove away from the filter square plate, and the two ventilation pipes are connected to the smoke pipe together; the length of the cutting fan blade is greater than the diameter of the ventilation groove; a driving motor is installed on the side of the active substrate away from the valve flow block, and the output end of the driving motor is connected to the rotating shaft.

3. A cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 2, characterized in that: The rotating square column is sleeved with a rotating spring, one end of which is connected to the rotating horizontal plate, and the other end is connected to a rotating limit plate, which is installed at one end of the rotating square column away from the auxiliary base.

4. A cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 1, characterized in that: The impact reduction and loss-stopping structural component includes a limit slide column installed in a limit slide groove, the limit slide column passes through the limit slider and the two are slidably matched; a limit spring is sleeved on the limit slide column, one end of the limit spring is fixedly connected to the limit slide groove, and the other end is fixedly connected to the limit slider; the cross bar of the T-shaped baffle plate is located in the limit slide groove; the long plate of the T-shaped baffle plate fits the outer side surface of the intake cooling pipe; guide slide grooves are provided on both sides of the intake cooling pipe, and the guide slide grooves are connected to the limit slide grooves; the cross bar of the T-shaped baffle plate is slidably matched with the guide slide grooves; the long plate of the T-shaped baffle plate is larger than the guide slide groove.

5. The cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 1 is characterized in that: The dust filter disassembly and assembly module includes a sliding groove arranged on the opposite surfaces of two limit sliding blocks, and a movable inclined block slides in the sliding groove, and the opposite surfaces of the movable inclined block are both inclined surfaces and are located in the intake air cooling pipe; the side surface of the movable inclined block is located on the moving path at the edge of the filter square plate; the opposite back surfaces of the two movable inclined blocks are installed with movable square columns, and the movable square columns pass through the end points of the movable inclined blocks and the T-shaped baffle plates and are connected with movable pull plates, and the movable pull plates are located outside the intake air cooling pipe; a movable spring is sleeved on the movable square column, one end of the movable spring is connected to the movable inclined block, and the other end is connected to the inner wall of the limit sliding groove; the movable square column is also provided with a plurality of penetrating movable lock grooves.

6. A cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 5, characterized in that: The dust filter disassembly and assembly module also includes an auxiliary base arranged on the side of the T-shaped baffle plate away from the air intake cooling pipe, and the auxiliary base is slidably connected with a locking slide rod, and a locking limit plate is also installed on the end of the locking slide rod away from the auxiliary base; a locking spring is sleeved on the locking slide rod, one end of the locking spring is connected to the locking limit plate, and the other end is connected to the auxiliary base; one of the positioning locking grooves is located on the moving path of the locking slide rod; a locking groove is also provided on the side of the filter square plate close to the positioning oblique block, and the locking groove is located on the moving path of the positioning oblique block and the two are matched.

7. A cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 1, characterized in that: The pressurized slag cleaning unit includes a driving shaft arranged on a positioning gear, a first base is installed on the driving shaft, and the first base is arranged on the intake cooling pipe; the end of the driving shaft away from the positioning gear is also connected to a driving gear, the driving gear is meshingly connected to a driving rack, the driving rack is slidably connected to a second base, and the second base is arranged on the intake cooling pipe; a bent square rod is installed on the driving rack; two of the bent square rods are commonly connected to a pressure square plate, and two pressure square cylinders are symmetrically installed on one side of the pressure square plate close to the intake cooling pipe, and the pressure square cylinder passes through the top of the intake cooling pipe and is slidably connected to a pressure square column at one end thereof.

8. A cooling type high-efficiency flue gas desulfurization and dust removal device according to claim 7, characterized in that: The two pressure square columns are connected to a cleaning plate at one end away from the pressure square plate; a discharge channel of the same size as the cleaning plate is provided at the bottom of the intake cooling pipe, and a valve is provided on the discharge channel; one side of the discharge channel extends to the bottom of the intake cooling pipe, and the other side extends to the inner bottom of the intake cooling pipe; a pressure spring is also provided in the pressure square cylinder, one end of the pressure spring is connected to the inner wall of the pressure square cylinder, and the other end is connected to the pressure square column; contact pieces are provided on the opposite surfaces of the cleaning plate and the pressure square column.

9. A cooling type high-efficiency flue gas desulfurization and dust removal method, using the cooling type high-efficiency flue gas desulfurization and dust removal device as claimed in claim 1, characterized in that: Includes steps: Step 1: The flue gas enters the absorption tower through the air intake cooling pipe to control the temperature of the flue gas; Step 2: The filter square plate is installed in the air intake cooling pipe through the dust filter disassembly and assembly module to filter impurities mixed in the flue gas; Step 3: When the impurities in the flue gas pass through the filter square plate, they will hit the filter square plate. Under the action of the impact reduction and loss-stopping structural member, the impact force on the filter square plate during use can be reduced; Step 4: Operate the rotary cutting and fragmentation device to cut the impurities mixed in the flue gas into several small pieces.

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