CN115845601B - Energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of industrial boiler - Google Patents

Abstract

The utility model belongs to the technical field of desulfurization and denitrification, and relates to an energy-saving and environment-friendly device for flue gas desulfurization and denitrification of an industrial boiler, which comprises a boiler, a cloth bag dust removal box and a purification tower which are sequentially connected, wherein the output end of the boiler is communicated with the input end of the cloth bag dust removal box through a guide pipe, the output end of the cloth bag dust removal box is communicated with an induced draft fan, the output end of the induced draft fan is communicated with a smoke inlet pipe, the smoke inlet pipe penetrates the purification tower and extends into the purification tower, and the cloth bag dust removal box comprises a filter box body, an ash pipe, a smoke inlet box, a smoke outlet box, a partition plate, an electrostatic dust removal assembly for performing primary filtration on flue gas and dust and a cloth bag dust removal assembly for performing secondary filtration on the flue gas and dust. According to the utility model, the electrostatic dust collection assembly and the cloth bag dust collection assembly are used for adsorbing, filtering and removing dust, cleaning the dust, improving the dust removal effect, enabling the flue gas to be fully contacted with the denitration catalyst and the desulfurizing agent through the purifying mechanism, and improving the purifying efficiency.

Description

Energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of industrial boiler

Technical Field

The utility model relates to the technical field of desulfurization and denitrification, in particular to an energy-saving and environment-friendly device for desulfurization and denitrification of industrial boiler flue gas.

Background

A large amount of coal is required to be burned in the working process of the thermal power plant, and as the coal is provided with more sulfides and nitrifiers after being mined, the sulfides and nitrifiers flow along with flue gas in the coal burning process, and the substances are directly discharged into the air, so that the efficiency of pollutant diffusion is improved to a great extent, the living environment of surrounding people is influenced, and living conditions of people become bad.

When the industrial boiler is used, a large amount of flue gas is discharged, and the flue gas is discharged after being not treated, so that irreversible pollution is easily caused to the environment.

Through retrieval, the Chinese patent of the utility model with the bulletin number of CN213790900U discloses an energy-saving and environment-friendly device for flue gas desulfurization and denitrification of an industrial boiler, which comprises a box body, wherein an air inlet pipe is fixedly arranged on one side of the box body, a water pump is fixedly arranged at the bottom of one side of the box body, one end of a first water pipe is fixedly arranged on one side of the water pump, the other end of the first water pipe extends into the box body, and one end of a second water pipe is fixedly arranged at the top of the water pump. The patent can discharge after the flue gas treatment and purification, avoids the pollution to the environment, effectively improves the purification efficiency of the flue gas, can recycle the desulfurization and denitrification agent, avoids the waste of the desulfurization and denitrification agent, and is energy-saving and environment-friendly.

However, the above patents still have some disadvantages: the flue gas that produces when boiler burns contains a large amount of dust, and flue gas in this patent does not pass through the dust removal, influences the SOx/NOx control effect of flue gas easily, and simultaneously, the inside flue gas of box is shorter with SOx/NOx control catalyst contact time, and the flue gas SOx/NOx control effect that the contact surface scheduling problem leads to is less is poor.

Disclosure of Invention

The utility model aims to solve the technical problems that: the utility model provides an energy-saving and environment-friendly device for flue gas desulfurization and denitrification of an industrial boiler, which aims to solve the problems of unsatisfactory dust removal effect, short contact time of flue gas and a desulfurization and denitrification catalyst and small contact surface.

The utility model provides an energy-saving and environment-friendly device for flue gas desulfurization and denitrification of an industrial boiler, which comprises a boiler, a cloth bag dedusting box and a purifying tower which are sequentially connected, wherein the output end of the boiler is communicated with the input end of the cloth bag dedusting box through a guide pipe, the output end of the cloth bag dedusting box is communicated with an induced draft fan, the output end of the induced draft fan is communicated with a smoke inlet pipe, the smoke inlet pipe penetrates through the purifying tower and extends into the purifying tower, the cloth bag dedusting box comprises a filtering box body, an ash pipe, a smoke inlet box, a smoke outlet box, a partition plate, an electrostatic dust removing component for primarily filtering flue gas dust and a cloth bag dedusting component for secondarily filtering flue gas dust, the smoke inlet box and the smoke outlet box are respectively arranged at two ends of the filtering box body, the ash pipe is fixedly connected to the bottom of the filtering box body, the partition plate is fixedly connected to the middle part of the filtering box body, the partition plate divides the filtering box body into a first filtering chamber and a second filtering chamber, the first filtering chamber is communicated with the smoke inlet box, the second filtering chamber is communicated with the smoke outlet box, the electrostatic dust removing component and the cloth bag dedusting component are respectively arranged in the first filtering chamber and the second filtering chamber, and the filtering chamber are respectively, and a filter mechanism for purifying flue gas after being used for filtering flue gas and purifying the flue gas dust is arranged in the filtering tower.

Preferably, the electrostatic dust removal assembly comprises a plurality of rotating rods, a plurality of electrostatic plates, an installation box, a driving assembly for driving all the electrostatic plates to rotate and a plurality of knocking assemblies for shaking off dust on the electrostatic plates, all the rotating rods are uniformly arranged inside a first filter chamber from top to bottom, two ends of each rotating rod are respectively and rotationally connected with the installation box and the partition plate through rotating shafts, all the electrostatic plates are fixedly sleeved on the rotating rods, each electrostatic plate comprises an anode discharge plate and a cathode discharge plate, the anode discharge plates and the cathode discharge plates are staggered, the installation boxes are fixedly arranged at the middle connection part of an air inlet smoke box and a filter box body, the upper end and the lower end of each installation box respectively penetrate through the filter box body and extend to the outer part of the filter box body, the driving assembly is in transmission connection with all the rotating rods, and all the knocking assemblies are uniformly arranged between the two adjacent rotating rods.

Preferably, the drive assembly includes a plurality of first gear and two second gears, all the one end of dwang runs through the mounting box and extends to the mounting box inside, and rotates with the mounting box through the bearing and be connected, and all first gear cover is established on all dwang, two the second gear rotates respectively and sets up at the inside upper and lower both ends of mounting box, and the transmission is connected with first drive chain between one of them second gear and one of them first gear, and the transmission is connected with the second drive chain between another second gear and other first gears, the upper and lower both ends of filter box all are provided with driving motor, two driving motor output shaft respectively with two second gear fixed connection.

Preferably, the width of the electrostatic plate near the inner top wall of the filter box is smaller than the width of the rest of the electrostatic plates.

Preferably, strike the subassembly and include dead lever and a plurality of conflict part, the dead lever level sets up two between the dwang, just the dead lever both ends respectively with installation box and division board fixed connection, conflict part evenly sets up on the dead lever, conflict part includes two fixed barrels that are diagonal setting in the dead lever both sides and two activities peg graft at the telescopic link of two fixed barrel insidely, fixedly connected with spring between telescopic link and the fixed barrel, the spring is located inside the fixed barrel, the telescopic link is kept away from fixed barrel one end fixedly connected with circular conflict piece.

Preferably, the sack cleaner assembly includes a plurality of filter bag, fly leaf and two pneumatic cylinders that are used for driving the fly leaf and carry out horizontal direction and remove, all the filter bag is the slope form and sets up inside the second filter chamber, all evenly distributed between the filter bag, the fly leaf slides and sets up in the second filter chamber, filter bag both ends respectively with division board and fly leaf fixed connection, the air vent that can communicate with the filter bag has all been seted up on division board and the fly leaf, two the pneumatic cylinder is installed respectively in division board bottom both sides, two the output shaft and the fly leaf fixed connection of pneumatic cylinder, division board top symmetry is provided with two guide bars, guide bar both ends respectively with division board and filter box fixed connection, the spacing hole that can supply the guide bar to pass has all been seted up to fly leaf roof both sides.

Preferably, the purifying mechanism comprises a first mounting plate, a second mounting plate, a third mounting plate, a guide funnel, a mixing assembly for quickly mixing smoke with a denitration catalyst and a desulfurizing agent, and a rotating motor for driving the mixing assembly to rotate, wherein the first mounting plate, the second mounting plate and the third mounting plate are sequentially horizontally arranged inside the purifying tower from top to bottom, the guide funnel is arranged on the first mounting plate, a plurality of smoke guide holes are formed in one side of the second mounting plate, the mixing assembly is arranged on the second mounting plate, the mixing assembly is positioned under the guide funnel, the rotating motor is arranged under the third mounting plate, and the rotating motor is in transmission connection with the mixing assembly.

The purifying tower is characterized in that a feeding pipe, an air duct and a discharging pipe are sequentially arranged on the side wall of the purifying tower from top to bottom, the feeding pipe is located right above the guide funnel, the air duct is located right below the first mounting plate, the output end of the induced draft fan is located right below the second mounting plate, and the discharging pipe is located right above the third mounting plate, far away from one side of the smoke inlet pipe, and is connected with the third mounting plate.

Preferably, the mixing assembly comprises a hopper and an adsorption cylinder, the hopper is rotationally arranged in the middle of the second mounting plate, the hopper is positioned under a discharge hole of the diversion funnel, a plurality of air inlets are uniformly formed in the top of the hopper along the circumferential direction, a lantern ring used for limiting the hopper is fixedly connected inside the purification tower, a diversion opening is formed in the inner bottom wall of the hopper, the adsorption cylinder is fixedly connected to the inner bottom wall of the hopper and communicated with the diversion opening, a plurality of through holes are uniformly formed in the inner wall of the adsorption cylinder along the circumferential direction, and a rotary gear is fixedly connected to the bottom of the hopper.

Preferably, a plurality of smoke guide holes are formed in one side of the second mounting plate and are arranged on the inner bottom wall of the purifying tower, the output shaft of the rotating motor penetrates through the third mounting plate and extends to the bottom of the second mounting plate, a transmission gear is sleeved on the output shaft of the rotating motor, and the transmission gear is meshed with the rotation gear.

The utility model has the beneficial effects that:

according to the flue gas desulfurization and denitrification energy-saving environment-friendly device for the industrial boiler, dust in flue gas is adsorbed through the electrostatic dust collection component, preliminary dust collection is carried out on the flue gas, the driving component drives the electrostatic plates to rotate, when all the electrostatic plates rotate to be inclined, the dust at the top of the electrostatic plates slides along the surfaces of the electrostatic plates, and the dust falls into the ash bucket from gaps generated between the rotating electrostatic plates and the filtering box body to be collected, so that the effect of rapid dust collection is achieved.

According to the energy-saving and environment-friendly device for flue gas desulfurization and denitration of the industrial boiler, through the cooperation of the knocking component and the rotating rod, the inclined plate can collide with the circular collision block while the ash falls down in a reciprocating manner, the circular collision block is knocked on the electrostatic plate through the resilience force of the spring, dust on the electrostatic plate is shaken off, and the cleaning effect of the electrostatic plate can be greatly improved through repetition.

Thirdly, the energy-saving and environment-friendly device for desulfurizing and denitrating the flue gas of the industrial boiler is characterized in that secondary dust removal is carried out inside the bag-type dust removal component, dust-containing gas is filtered through the filtering effect of the fiber fabric, fine, dry and non-fibrous dust can be effectively captured, the dust removal effect is further improved, the filter bag is driven by the hydraulic cylinder to carry out folding and stretching, dust can be shaken off when the filter bag is folded and stretched through the inclined arrangement of the filter bag, the filter bag can be rapidly cleaned without being disassembled, and the dust is very convenient to clean.

Fourth, the energy-saving and environment-friendly device for desulfurizing and denitrating the flue gas of the industrial boiler provided by the utility model has the advantages that the denitration catalyst and the desulfurizer rotate in the hopper through the arrangement of the purification mechanism, the flue gas enters the hopper and can be fully contacted with the denitration catalyst and the desulfurizer to absorb sulfur dioxide in the flue gas, the purpose of desulfurization is finally achieved, and the situation that the purification efficiency is influenced due to accumulation of the denitration catalyst and the desulfurizer due to too low flow speed of the flue gas is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a three-dimensional structure of an industrial boiler flue gas desulfurization and denitrification energy-saving environment-friendly device;

FIG. 2 is a sectional view of the internal structure of the bag dust removing box;

FIG. 3 is a schematic diagram showing a partial structure of an electrostatic precipitator assembly;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

FIG. 5 is a schematic diagram showing a partial structural disassembly of an electrostatic precipitator assembly;

FIG. 6 is a cross-sectional view of the internal structure of the mounting box;

FIG. 7 is a schematic diagram of a bag-type dust removal assembly split structure;

FIG. 8 is a sectional view showing the internal structure of the purifying column;

FIG. 9 is an enlarged view of the structure at B of FIG. 8;

fig. 10 is a schematic partial structure of the hybrid assembly.

Reference numerals: 1. a boiler; 2. a cloth bag dust removing box; 3. a purifying tower; 4. a filter box; 41. a first filtering chamber; 42. a second filtering chamber; 5. an ash bucket; 6. an air inlet smoke box; 7. an air outlet smoke box; 8. a partition plate; 9. an electrostatic dust collection assembly; 91. a rotating lever; 92. an electrostatic plate; 921. a positive electrode discharge plate; 922. a negative electrode discharge plate; 93. a mounting box; 94. a drive assembly; 941. a first gear; 942. a second gear; 943. a first drive chain; 944. a second drive chain; 95. a striking assembly; 951. a fixed rod; 952. a collision member; 953. a fixed cylinder; 954. a telescopic rod; 955. a circular abutting block; 96. a driving motor; 10. a cloth bag dust removing component; 101. a filter bag; 102. a movable plate; 103. a hydraulic cylinder; 104. an air guide hole; 105. a guide rod; 11. a purifying mechanism; 111. a first mounting plate; 112. a second mounting plate; 113. a third mounting plate; 114. a guide funnel; 115. a mixing assembly; 116. a rotating electric machine; 117. a feed pipe; 118. an air duct; 119. a discharge pipe; 120. a hopper; 121. an adsorption cylinder; 122. an air inlet; 123. a collar; 124. a diversion port; 125. a through hole; 126. rotating the gear; 127. a transmission gear; 128. a smoke guide hole; 12. an induced draft fan; 13. and a smoke inlet pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

In this embodiment, as shown in fig. 1 to 8, an energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of an industrial boiler comprises a boiler 1, a bag-type dust removing box 2 and a purifying tower 3 which are sequentially connected, wherein the output end of the boiler 1 is communicated with the input end of the bag-type dust removing box 2 through a conduit, the output end of the bag-type dust removing box 2 is communicated with an induced draft fan 12, the output end of the induced draft fan 12 is communicated with a smoke inlet pipe 13, the smoke inlet pipe 13 penetrates through the purifying tower 3 and extends into the purifying tower 3, the bag-type dust removing box 2 comprises a filter box body 4, an ash pipe 5, an air inlet smoke box 6, an air outlet smoke box 7, a partition plate 8, an electrostatic dust removing assembly 9 for primarily filtering flue gas dust and a bag dust removing assembly 10 for secondarily filtering flue gas dust, the air inlet smoke box 6 and the air outlet smoke box 7 are respectively arranged at two ends of the filter box body 4, the ash pipe 5 is fixedly connected to the bottom of the filter box body 4, the partition plate 8 is fixedly connected to the middle part of the filter box body 4, the partition plate 8 partitions the filter box body 4 into a first filter chamber 41 and a second filter chamber 42, the first filter chamber 41 is communicated with the air inlet smoke box 6, the second filter chamber 42 is communicated with the air outlet box 7 and the air outlet smoke box 7 and the air outlet 7 is respectively communicated with the electrostatic dust removing assembly 9 and the dust removing assembly 10 for secondarily filtering flue gas dust in the filter chamber 11 is arranged in the filter chamber 11; when the boiler 1 works, the generated flue gas enters the bag-type dust removing box 2 through the guide pipe, the flue gas firstly enters the first filtering chamber 41 from the air inlet smoke box 6, when the flue gas and dust pass through, the dust in the flue gas is adsorbed through the electrostatic dust removing assembly 9, tiny particles in the dust-containing gas are adsorbed by utilizing static electricity, and then the flue gas enters the bag-type dust removing assembly 10 in the second filtering chamber 42 for secondary dust removal, so that the dust removing effect is further improved.

However, because the electrostatic plates 92 in the prior art are all vertically arranged, when flue gas passes through the electrostatic plates 92, a part of flue gas can flow out of the other side of the ash bucket 5 into the first filtering chamber 41 after entering the ash bucket 5 and then is conveyed into the second filtering chamber 42, the time that the part of flue gas passes through the electrostatic plates 92 is shorter, and the adsorbed dust is less, so that the dust removing effect is poor, therefore, the electrostatic dust removing assembly 9 is arranged in the first filtering chamber 41, the electrostatic dust removing assembly 9 comprises a plurality of rotating rods 91, a plurality of electrostatic plates 92, a mounting box 93, a driving assembly 94 for driving all the electrostatic plates 92 to rotate and a plurality of knocking assemblies 95 for shaking off the dust on the electrostatic plates 92, all the rotating rods 91 are uniformly arranged in the first filtering chamber 41 from top to bottom, two ends of the rotating rods 91 are respectively connected with the mounting box 93 and the partition plate 8 through rotating shafts, all electrostatic plates 92 are fixedly sleeved on the rotating rod 91, the electrostatic plates 92 comprise an anode discharge plate 921 and a cathode discharge plate 922, the anode discharge plate 921 and the cathode discharge plate 922 are arranged in a staggered mode, a mounting box 93 is fixedly arranged at the joint of the middle part of the air inlet smoke box 6 and the middle part of the filter box body 4, the upper end and the lower end of the mounting box 93 respectively penetrate through the filter box body 4 and extend to the outside of the filter box body 4, a driving assembly 94 is in transmission connection with all the rotating rods 91, all knocking assemblies 95 are uniformly arranged between two adjacent rotating rods 91, the electrostatic plates 92 in the embodiment are arranged in a first filter chamber 41 in a rotating mode through the rotating rods 91, when dust is removed from smoke, the electrostatic plates 92 are arranged in a horizontal state, when the electrostatic plates 92 are in a horizontal state, the two ends of the electrostatic plates are in contact with the filter box body 4, the ash bucket 5 and the second filter chamber 42 are closed, when the smoke passes through the electrostatic plates 92, the positive electrode discharge plate 921 and the negative electrode discharge plate 922 are electrified to obtain positive charges or negative charges respectively, flue gas enters the second filter chamber 42 from a channel formed between the positive electrode discharge plate 921 and the negative electrode discharge plate 922, positively charged fine particles in the gas are mixed with negatively charged coarse particles flowing out from an adjacent negative electrode channel, and simultaneously, the negatively charged fine particles are mixed with the positively charged coarse particles, so that the number of the fine particles is reduced, dust particles with particle diameters larger than 10 microns and easy to remove are formed, and the dust removal efficiency is improved.

When dust adsorbed on the electrostatic plates 92 needs to be cleaned, the electrostatic plates 92 are powered off, then all the electrostatic plates 92 are driven to rotate through the driving assembly 94, the electrostatic plates 92 are rotated to an inclined state, the driving assembly 94 comprises a plurality of first gears 941 and two second gears 942, one end of each rotating rod 91 penetrates through the mounting box 93 to extend into the mounting box 93 and is rotationally connected with the mounting box 93 through a bearing, all the first gears 941 are sleeved on all the rotating rods 91, the two second gears 942 are respectively rotationally arranged at the upper end and the lower end of the inside of the mounting box 93, a first transmission chain 943 is connected between one second gear 942 and one first gear 941 in a transmission way, a second transmission chain 944 is connected between the other second gear 942 and the other first gear 941 in a transmission way, the upper end and the lower end of the filtering box 4 are respectively provided with a driving motor 96, the output shafts of the two driving motors 96 are fixedly connected with the two second gears 942 respectively, the driving motor 96 at the top of the filtering box body 4 drives the first transmission chain 943 to rotate, so that one electrostatic plate 92 close to the top in the filtering box body 4 is driven to rotate until one end of the electrostatic plate 92 is in contact with the inner top wall of the filtering box body 4, then the driving motor 96 at the bottom of the filtering box body 4 drives the second transmission chain 944 to rotate, so that all the first gears 941 are driven to rotate, the rest of rotating rods 91 are driven to rotate, the rest of electrostatic plates 92 are driven to rotate to contact with the first electrostatic plate 92, when all the electrostatic plates 92 are rotated to be inclined, dust at the top of the electrostatic plates 92 slides along the surface of the electrostatic plates 92, the dust falls into a gap generated between the electrostatic plates 92 and the filtering box body 4 to be collected in the ash bucket 5, and thus the electrostatic plates 92 can be rapidly shaken off the dust on the electrostatic plates 92 by repeatedly rotating, therefore, the cleaning efficiency of the dust is improved, and it is noted that, because the interval between the first electrostatic plate 92 and the inner top wall of the filtering box 4 is smaller, in order to enable the dust on the surface of the first electrostatic plate 92 to slide down, the width of the electrostatic plate 92 close to the inner top wall of the filtering box 4 is smaller than the width of the rest of electrostatic plates 92, so that the rotation angle of the first electrostatic plate 92 is increased without affecting the sealing of the first filtering chamber 41 by the rest of electrostatic plates 92, and the rotation angle of the rest of electrostatic plates 92 is increased.

Although the dust adsorbed on the upper surface of the electrostatic plate 92 can slide down through the rotation inclination, the rotation angle is smaller, in order to clean the dust more thoroughly, a knocking component 95 is arranged at the top of the rotating rod 91, the knocking component 95 generates a vibration effect to knock the dust down by colliding with the static plate 92 when the static plate 92 rotates, the knocking component 95 comprises a fixed rod 951 and a plurality of collision components 952, the fixed rod 951 is horizontally arranged between the two rotating rods 91, two ends of the fixed rod 951 are respectively fixedly connected with the mounting box 93 and the partition plate 8, the collision components 952 are uniformly arranged on the fixed rod 951, the collision components 952 comprise two fixed cylinders 953 which are diagonally arranged at two sides of the fixed rod 951 and two telescopic rods 954 which are movably spliced in the two fixed cylinders 953, the telescopic rod 954 and the fixed cylinder 953 are fixedly connected with a spring, the spring is located inside the fixed cylinder 953, one end of the telescopic rod 954, away from the fixed cylinder 953, is fixedly connected with a circular abutting block 955, when the electrostatic plate 92 rotates, all abutting components 952 arranged on the fixed rod 951 are abutted against each other, and the telescopic rod 954 is arranged in the fixed cylinder 953 in a sliding manner, and the spring is fixed between the telescopic rod 954 and the fixed cylinder 953, so that the spring at the bottom of the telescopic rod 954 can be extruded when the electrostatic plate 92 abuts against the circular abutting block 955 to compress, and when the electrostatic plate 92 reversely rotates, the spring rebounds the telescopic rod 954, so that the circular abutting block 955 is knocked on the electrostatic plate 92, dust on the electrostatic plate 92 is shaken off, and the cleaning effect of the electrostatic plate 92 can be greatly improved repeatedly.

Because the flue gas contains a large amount of dust and a plurality of smaller particle layers, the bag-type dust removing assembly 10 is arranged in the second filtering chamber 42 to filter the smaller particle layers in the flue gas, the bag-type dust removing assembly 10 comprises a plurality of filtering bags 101, a movable plate 102 and two hydraulic cylinders 103 for driving the movable plate 102 to move horizontally, all the filtering bags 101 are obliquely arranged in the second filtering chamber 42, all the filtering bags 101 are uniformly distributed, the movable plate 102 is slidably arranged in the second filtering chamber 42, two ends of the filtering bags 101 are fixedly connected with the partition plate 8 and the movable plate 102 respectively, air guide holes 104 which can be communicated with the filtering bags 101 are formed in the partition plate 8 and the movable plate 102 respectively, the two hydraulic cylinders 103 are respectively arranged at two sides of the bottom of the partition plate 8, the output shafts of the two hydraulic cylinders 103 are fixedly connected with the movable plate 102, two guide rods 105 are symmetrically arranged at the top of the partition plate 8, the two ends of the guide rod 105 are fixedly connected with the partition plate 8 and the filter box body 4 respectively, limiting holes through which the guide rod 105 can pass are formed on the two sides of the top plate of the movable plate 102, when flue gas enters into the filter bags 101, the air inlet quantity of the flue gas is more uniform, the damage of the filter bags 101 caused by the impact of the flue gas is reduced, the filtering burden of the filter bags 101 is reduced, meanwhile, the filter bags 101 in the embodiment adopt textile filter cloth, the filtering effect of the fiber fabrics is utilized to filter dust-containing gas, fine, dry and non-fibrous dust can be effectively trapped, as the filtering process is increased, some large dust particles are blocked on the body surface of the filter bags 101 to form a small particle layer, the aperture of the surface of the filter bags 101 is reduced, more small particles can be blocked, the small particle layer is attached on the inner surface of the filter bags 101, when needs clear up filter bag 101, drive fly leaf 102 through two pneumatic cylinders 103 and carry out reciprocating motion along guide bar 105 to make all filter bags 101 fold tensile, and the slope form setting of filter bag 101 can shake dust off the gathering when its folding tensile, in the direction landing to ash bucket 5 along flue gas slope, need not dismantle filter bag 101 can clear up it fast, it is very convenient to clear away the dust, avoids using for a long time to influence its filtration performance.

The purification mechanism 11 comprises a first mounting plate 111, a second mounting plate 112, a third mounting plate 113, a guide funnel 114, a mixing component 115 for rapidly mixing flue gas with a denitration catalyst and a desulfurizing agent, and a rotating motor 116 for driving the mixing component 115 to rotate, wherein the first mounting plate 111, the second mounting plate 112 and the third mounting plate 113 are horizontally arranged inside the purification tower 3 from top to bottom in sequence, the guide funnel 114 is arranged on the first mounting plate 111, the mixing component 115 is arranged on the second mounting plate 112, a plurality of smoke guide holes 128 are formed in one side of the second mounting plate 112, the mixing component 115 is positioned under the guide funnel 114, the rotating motor 116 is arranged under the third mounting plate 113, the rotating motor 116 is in transmission connection with the mixing component 115, flue gas is filtered by a bag dust removal box 2 from the boiler 1 and pumped into the purification tower 3 by a draught fan 12, after the flue gas containing sulfur and nitrate is desulfurized and denitrated through the desulfurization and denitration tank body by the purification mechanism 11, sulfur oxides and nitrogen oxides in the flue gas are effectively removed to meet the requirements of manufacturers and local environmental protection departments, when the flue gas is conveyed into the purification tower 3 from the smoke inlet pipe 13 through the induced draft fan 12, a feed pipe 117, an air duct 118 and a discharge pipe 119 are sequentially arranged on the side wall of the purification tower 3 from top to bottom, the feed pipe 117 is positioned right above the guide funnel 114, the air duct 118 is positioned right below the first mounting plate 111, the output end of the induced draft fan 12 is positioned right below the second mounting plate 112, the discharge pipe 119 is positioned right above the third mounting plate 113 and is far away from one side of the smoke inlet pipe 13, and is connected with the third mounting plate 113, and denitration catalyst and desulfurizing agent enter the guide funnel 114 through the feed pipe 117 and then fall into the mixing assembly 115, the flue gas enters between the second mounting plate 112 and the third mounting plate 113 in the purifying tower 3 through the smoke inlet pipe 13, then enters between the first mounting plate 111 and the second mounting plate 112 through the smoke guide holes 128, then enters into the mixing component 115 to be mixed with the denitration catalyst and the desulfurizing agent, the oxygen and the nitric oxide in the flue gas are catalyzed and react under the catalyst to generate nitrogen dioxide, the nitrogen dioxide is reduced into nitrogen by carbon monoxide generally existing in the flue gas to generate carbon dioxide, the multi-pollutant cooperative control of desulfurization, denitration, mercury removal and dust removal integration can be realized, the denitration catalyst and the desulfurizing agent can be mixed more uniformly through the cooperation of the flow of the flue gas and the mixing component 115, the desulfurization and denitration can obtain good effects, and the quality of flue gas purification is improved.

When flue gas is subjected to desulfurization and denitrification treatment through a denitration catalyst and a desulfurizing agent, the situation that the flow speed of the flue gas is too slow, the denitration catalyst and the desulfurizing agent are piled up to influence the purification efficiency occurs often, therefore, the mixing of the flue gas, the denitration catalyst and the desulfurizing agent is accelerated through the arrangement of the mixing component 115, the efficiency of flue gas desulfurization and denitrification is improved, the mixing component 115 comprises a hopper 120 and an adsorption cylinder 121, the hopper 120 is rotationally arranged in the middle part of a second mounting plate 112, the hopper 120 is positioned under a discharge hole of a diversion funnel, a plurality of air inlets 122 are uniformly formed at the top of the hopper 120 along the circumferential direction, a lantern ring 123 for limiting the hopper 120 is fixedly connected in the purification tower 3, a diversion port 124 is formed on the inner bottom wall of the hopper 120, the adsorption cylinder 121 is fixedly connected on the inner bottom wall of the hopper 120 and communicated with the diversion port 124, a plurality of through holes 125 are uniformly formed in the inner wall of the adsorption cylinder 121 along the circumferential direction, the bottom of the hopper 120 is fixedly connected with a rotating gear 126, after the denitration catalyst and the desulfurizing agent enter the hopper 120, the hopper 120 is driven to rotate by a rotating motor 116, the rotating motor 116 is arranged on the inner bottom wall of the purifying tower 3, an output shaft of the rotating motor 116 penetrates through a third mounting plate 113 and extends to the bottom of a second mounting plate 112, a transmission gear 127 is sleeved on the output shaft of the rotating motor 116, the transmission gear 127 is meshed with the rotating gear 126, when the output shaft of the rotating motor 116 rotates, the transmission gear 127 is driven to rotate, thereby driving the rotating gear 126 to rotate, so that the hopper 120 rotates, meanwhile, the denitration catalyst and the desulfurizing agent rotate in the hopper 120, the accumulation of the denitration catalyst and the desulfurizing agent can be avoided, and after flue gas enters the hopper 120 through an air inlet 122, vortex is generated due to the rotation of an adsorption cylinder 121, thereby the flue gas is absorbed into the absorption cylinder 121, the sulfur dioxide in the flue gas is absorbed after the flue gas is fully contacted with the denitration catalyst and the desulfurizing agent, the purpose of desulfurization is finally achieved, the purification efficiency is improved, after the part of the bottom layer of the denitration catalyst and the desulfurizing agent in the hopper 120, which is contacted first, reaches desulfurization saturation, the valve in the diversion opening 124 is opened to discharge the flue gas, and fresh denitration catalyst and desulfurizing agent are added from the feeding pipe 117 to be supplemented.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (4)

1. The utility model provides an energy-concerving and environment-protective device of industrial boiler flue gas desulfurization denitration, includes boiler (1), sack dust removal case (2) and the purifying column (3) that connect in order, through pipe intercommunication between the input of boiler (1) output and sack dust removal case (2), the output intercommunication of sack dust removal case (2) has draught fan (12), the intercommunication has smoke tube (13) of intaking on draught fan (12) output, smoke tube (13) of intaking runs through purifying column (3) and extends into in purifying column (3), its characterized in that: the utility model provides a dust removal of sack case (2) is including filter box (4), ash bucket (5), smoke box (6) of admitting air, smoke box (7) of giving vent to anger, division board (8), be used for carrying out preliminary filtration's electrostatic precipitator subassembly (9) and be used for carrying out secondary filtration's sack dust removal subassembly (10) to the smoke dust, smoke box (6) and smoke box (7) of giving vent to anger set up respectively at filter box (4) both ends, ash bucket (5) fixed connection is in filter box (4) bottom, division board (8) fixed connection is in filter box (4) middle part, division board (8) separate filter box (4) into first filter chamber (41) and second filter chamber (42), first filter chamber (41) and smoke box (6) intercommunication of admitting air, second filter chamber (42) and smoke box (7) intercommunication of giving vent to anger, electrostatic precipitator subassembly (9) and sack dust removal subassembly (10) set up respectively in first (41) and second filter chamber (42), inside setting up in purifying tower (3) is used for carrying out filtration membrane (92), flue gas dust removal mechanism (92) to carry out dust removal of a plurality of dust removal unit (93) and dust removal of filter box (93) after being used for rotating The device comprises a driving component (94) for driving all electrostatic plates (92) to rotate and a plurality of knocking components (95) for shaking off dust on the electrostatic plates (92), wherein all rotating rods (91) are uniformly arranged inside a first filtering chamber (41) from top to bottom, two ends of each rotating rod (91) are respectively and rotatably connected with a mounting box (93) and a partition plate (8) through rotating shafts, all the electrostatic plates (92) are fixedly sleeved on the rotating rods (91), each electrostatic plate (92) comprises an anode discharging plate (921) and a cathode discharging plate (922), the anode discharging plates (921) and the cathode discharging plates (922) are staggered, each mounting box (93) is fixedly arranged at the middle connection part of an air inlet smoke box (6) and a filtering box (4), the upper end and the lower end of each mounting box (93) respectively penetrate through the filtering box (4) and extend to the outside the filtering box (4), all the driving components (94) are in transmission connection with all the rotating rods (91), all the knocking components (95) are uniformly arranged between two adjacent rotating rods (91) and comprise a plurality of first gear boxes (93) and a plurality of bearings (942) which are connected with the first gear boxes (93) and the second gear boxes (93) in a penetrating mode, all first gears (941) are sleeved on all rotating rods (91), two second gears (942) are respectively and rotatably arranged at the upper end and the lower end inside a mounting box (93), a first transmission chain (943) is connected between one second gear (942) and one first gear (941) in a transmission manner, a second transmission chain (944) is connected between the other second gear (942) and the other first gears (941) in a transmission manner, driving motors (96) are respectively arranged at the upper end and the lower end of a filtering box (4), output shafts of the two driving motors (96) are respectively and fixedly connected with the two second gears (942), a knocking component (95) comprises a fixing rod (951) and a plurality of collision components (952), the fixing rod (951) is horizontally arranged between the two rotating rods (91), two ends of the fixing rod (951) are respectively and fixedly connected with the mounting box (93) and a partition plate (8), the collision components (951) are uniformly arranged on the fixing rod (951), the two collision components are respectively and fixedly connected with two telescopic cylinders (953) at two opposite angles between the two telescopic cylinders (953) and the two telescopic cylinders (954) which are fixedly connected with the two telescopic cylinders (953) respectively, the utility model provides a filter bag dust removal device, including fixed section of thick bamboo (953) one end fixedly connected with circular conflict piece (955) are kept away from to telescopic link (954), sack dust removal subassembly (10) include a plurality of filter bag (101), fly leaf (102) and two pneumatic cylinders (103) that are used for driving fly leaf (102) to carry out horizontal direction and remove, all filter bag (101) are the slope form setting inside second filter chamber (42), all evenly distributed between filter bag (101), fly leaf (102) slide and set up in second filter chamber (42), filter bag (101) both ends respectively with division board (8) and fly leaf (102) fixed connection, division board (8) and fly leaf (102) are gone up all to set up gas guide holes (104) that can communicate with filter bag (101), two pneumatic cylinders (103) are installed respectively in division board (8) bottom both sides, two output shaft and fly leaf (102) fixed connection of pneumatic cylinders (103), division board (8) top symmetry is provided with two guide bars (105), guide bar (105) and filter bag (8) and filter leaf (102) both ends (102) are equipped with respectively and can pass respectively and supply division board (102) both sides to open and can both sides of the fixed connection board (11) to install the mounting panel that can be used for the roof The device comprises a second mounting plate (112), a third mounting plate (113), a guide funnel (114), a mixing assembly (115) for rapidly mixing flue gas with a denitration catalyst and a desulfurizing agent, and a rotating motor (116) for driving the mixing assembly (115) to rotate, wherein the first mounting plate (111), the second mounting plate (112) and the third mounting plate (113) are sequentially horizontally arranged inside a purifying tower (3) from top to bottom, the guide funnel (114) is arranged on the first mounting plate (111), the mixing assembly (115) is arranged on the second mounting plate (112), a plurality of smoke guide holes (128) are formed in one side of the second mounting plate (112), the mixing assembly (115) is located under the guide funnel (114), the rotating motor (116) is arranged under the third mounting plate (113), and the rotating motor (116) is in transmission connection with the mixing assembly (115).

2. The energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of industrial boiler according to claim 1, which is characterized in that: the width of the static plate (92) close to the inner top wall of the filter box body (4) is smaller than the width of the rest static plates (92).

3. The energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of industrial boiler according to claim 1, which is characterized in that: the purifying tower is characterized in that a feeding pipe (117), an air duct (118) and a discharging pipe (119) are sequentially arranged on the side wall of the purifying tower (3) from top to bottom, the feeding pipe (117) is located right above the guide funnel (114), the air duct (118) is located right below the first mounting plate (111), the output end of the induced draft fan (12) is located right below the second mounting plate (112), and the discharging pipe (119) is located right above the third mounting plate (113) and far away from one side of the smoke inlet pipe (13) and is connected with the third mounting plate (113).

4. The energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of industrial boiler according to claim 1, which is characterized in that: the rotary motor (116) is arranged on the inner bottom wall of the purifying tower (3), an output shaft of the rotary motor (116) penetrates through the third mounting plate (113) and extends to the bottom of the second mounting plate (112), a transmission gear (127) is sleeved on the output shaft of the rotary motor (116), and the transmission gear (127) is meshed with the rotating gear (126).

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