阅读说明：本技术 一种电子集成板加工用烟气净化脱白处理设备 (flue gas purification and whitening treatment equipment for processing electronic integrated board ) 是由 师圆生 李志荣 任东发 曾福厚 吴柒兵 杨林鲜 易友元 于 2019-10-09 设计创作，主要内容包括：本发明涉及烟气处理设备技术领域,具体为一种电子集成板加工用烟气净化脱白处理设备,包括除粉筒、降温筒、脱硫筒和脱硝筒,除粉筒的上端口通过法兰连接降温筒的底部,降温筒所设的降温排出口与脱硫筒所设的脱硫进入管之间连接有导气管,脱硝筒所设的脱硝进入管与脱硫筒所设的脱硫排出管之间连接有导气管。有益效果：本发明中烟气沿多根换热管向上进行导送,通过进水管对换热腔内部进行充入冷却水,冷却水与通过换热管的烟气进行换热,降低烟气的温度；除粉筒、脱硫筒和脱硝筒内部均设有螺旋叶片状的导料叶片,能增加烟气在除粉筒、脱硫筒和脱硝筒内部的滞留时间,有效提高烟气除粉脱硫脱硝的效率。(The invention relates to the technical field of flue gas treatment equipment, in particular to flue gas purification and whitening treatment equipment for processing an electronic integrated board, which comprises a powder removing cylinder, a cooling cylinder, a desulfurization cylinder and a denitrification cylinder, wherein the upper port of the powder removing cylinder is connected with the bottom of the cooling cylinder through a flange, a gas guide pipe is connected between a cooling discharge port arranged on the cooling cylinder and a desulfurization inlet pipe arranged on the desulfurization cylinder, and a gas guide pipe is connected between a denitrification inlet pipe arranged on the denitrification cylinder and a desulfurization discharge pipe arranged on the desulfurization cylinder. Has the advantages that: according to the invention, flue gas is guided upwards along a plurality of heat exchange tubes, cooling water is filled into the heat exchange cavity through the water inlet tube, and the cooling water exchanges heat with the flue gas passing through the heat exchange tubes, so that the temperature of the flue gas is reduced; remove a powder section of thick bamboo, a desulfurization section of thick bamboo and a denitration section of thick bamboo inside and all be equipped with the guide blade of spiral blade piece, can increase the flue gas at the inside dwell time of a powder section of thick bamboo, a desulfurization section of thick bamboo and a denitration section of thick bamboo, effectively improve flue gas dusting SOx/NOx control's efficiency.)

1. The utility model provides an electron integrated plate processing is with gas cleaning whitening treatment facility, includes a dusting section of thick bamboo (1), a cooling section of thick bamboo (2), a desulfurization section of thick bamboo (3) and a denitration section of thick bamboo (4), its characterized in that: the inner part of the powder removing cylinder (1) is provided with a coaxiality powder removing cylinder rotating shaft (5), the lower end of the powder removing cylinder rotating shaft (5) is rotatably connected with the bottom surface of the powder removing cylinder (1), the outer wall of the powder removing cylinder rotating shaft (5) is welded with guide blades, the lower side wall of the powder removing cylinder (1) is welded and communicated with a flue gas inlet pipe (12), the side wall of the upper part of the powder removing cylinder (1) is welded and communicated with a powder removing material inlet pipe (6), the bottom side wall of the powder removing cylinder (1) is welded and communicated with a powder removing material discharge pipe (61), the upper end opening of the powder removing cylinder (1) is connected with the bottom of the cooling cylinder (2) through a flange, the inner wall of the cooling cylinder (2) is welded with two clapboards (7), a heat exchange cavity (8) is arranged between the two clapboards (7), a plurality of heat exchange tubes (9) are connected between the two clapboards (, the bottom side wall of the heat exchange cavity (8) is welded and communicated with a water inlet pipe (10), the top side wall of the heat exchange cavity (8) is welded and communicated with a water outlet pipe (101), the top of the cooling cylinder (2) is provided with a gas collecting cavity (11), the side wall of the gas collecting cavity (11) is welded and communicated with a cooling outlet port (121), the lower outer wall of the desulfurization cylinder (3) is welded and communicated with a desulfurization inlet pipe (13), a gas guide pipe is connected between the cooling outlet port (121) and the desulfurization inlet pipe (13), a desulfurization cylinder rotating shaft (14) with coaxiality is arranged inside the desulfurization cylinder (3), the upper end of the desulfurization cylinder rotating shaft (14) is rotatably connected with the top wall of the desulfurization cylinder (3), the outer wall of the desulfurization cylinder rotating shaft (14) is welded with guide vanes, the upper outer wall of the desulfurization cylinder (3) is welded and communicated with a desulfurization outlet pipe (131), and the upper outer wall of the desulfurization, the bottom of a desulfurization section of thick bamboo (3) is equipped with desulfurization material discharge pipe (151), the lower part outer wall welding intercommunication of a denitration section of thick bamboo (4) has denitration admission pipe (16), is connected with the air duct between denitration admission pipe (16) and desulfurization discharge pipe (131), and the inside of a denitration section of thick bamboo (4) is equipped with denitration pivot (17) of axiality, and the upper end of denitration pivot (17) rotates with the roof of a denitration section of thick bamboo (4) to be connected, and the outer wall welding of denitration pivot (17) has the guide blade, the upper portion outer wall welding intercommunication of a denitration section of thick bamboo (4) has flue gas discharge pipe (161), and the upper portion outer wall welding intercommunication of a denitration section of thick bamboo (4) has denitration material admission pipe (18), and the bottom of a denitration section of.

2. The flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: the bottom of a powder removing cylinder (1) is run through in a powder removing cylinder rotating shaft (5), the lower end of the powder removing cylinder rotating shaft (5) is connected with a first motor, the upper end of the powder removing cylinder rotating shaft (5) is rotatably connected with a bearing seat, and the bearing seat is welded with the inner wall of the powder removing cylinder (1) through a supporting rod.

3. the flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: the upper port of the powder removing cylinder (1) is provided with a first filter screen layer which is arranged above the inlet of the powder removing material inlet pipe (6).

4. The flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: the upper end of a desulfurization section of thick bamboo pivot (14) runs through the roof of a desulfurization section of thick bamboo (3), and the upper end of a desulfurization section of thick bamboo pivot (14) is connected with the second motor, and the lower extreme of a desulfurization section of thick bamboo pivot (14) rotates and is connected with the bearing frame, and the bearing frame passes through the inner wall welding of bracing piece and a desulfurization section of thick bamboo (3).

5. The flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: and a second filter screen layer is arranged above the inner wall of the desulfurization barrel (3), and the middle part of the second filter screen layer is in rotary contact with the desulfurization barrel rotating shaft (14).

6. The flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: and the desulfurization discharge pipe (131) is arranged above the second filter screen layer, and the inlet of the desulfurization material inlet pipe (15) is arranged below the second filter screen layer.

7. the flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: the upper end of denitration pivot (17) runs through the roof of a denitration section of thick bamboo (4), and the upper end of denitration pivot (17) is connected with the third motor, and the lower extreme of denitration pivot (17) rotates and is connected with the bearing frame, and the bearing frame passes through the inner wall welding of bracing piece with a denitration section of thick bamboo (4).

8. The flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: and a third filter screen layer is arranged above the inner wall of the denitration cylinder (4), and the middle part of the third filter screen layer is in rotary contact with the denitration rotating shaft (17).

9. The flue gas purification and whitening treatment equipment for processing the electronic integrated board as claimed in claim 1, wherein: the flue gas discharge pipe (161) is arranged above the third filter screen layer, and the inlet of the denitration material inlet pipe (18) is arranged below the third filter screen layer.

Technical Field

The invention relates to the technical field of flue gas treatment equipment, in particular to flue gas purification and whitening treatment equipment for processing an electronic integrated board.

background

When the discarded electronic integrated board is recycled, metals such as copper, tin and the like in the discarded electronic integrated board are mainly recycled, and when the electronic integrated board is treated by using a pyrometallurgical smelting technology, a large amount of smoke with dust particles, sulfides and nitrogen oxides is generated and needs to be treated. So as to achieve the purpose of convenient operation, but the following disadvantages still exist in the practical use:

1. The temperature before the flue gas is treated is high, and partial vaporous water and pollutants in the flue gas can be condensed due to temperature reduction in the process that the flue gas is discharged into the atmosphere at a chimney port, so that vaporous water vapor is formed at the chimney port, and the vaporous water vapor can be subjected to slight color change due to sky background color, sky illumination, observation angle and the like to form colored smoke plume;

2. 90% of domestic desulfurization processes adopt wet desulfurization and denitrification, which are easy to pollute water resources and need to treat polluted water resources;

3. In dry desulfurization and denitration, the time for full reaction of flue gas with desulfurization materials and denitration materials is required to be ensured, and desulfurization and denitration are ensured to be carried out on the flue gas.

disclosure of Invention

The invention aims to provide flue gas purification and whitening treatment equipment for processing an electronic integrated board, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a flue gas purification and whitening treatment device for processing an electronic integrated board comprises a powder removing cylinder, a cooling cylinder, a desulfurization cylinder and a denitration cylinder, wherein a coaxial powder removing cylinder rotating shaft is arranged inside the powder removing cylinder, the lower end of the powder removing cylinder rotating shaft is rotatably connected with the bottom surface of the powder removing cylinder, guide blades are welded on the outer wall of the powder removing cylinder rotating shaft, a flue gas inlet pipe is welded and communicated with the side wall of the lower part of the powder removing cylinder, a powder removing material inlet pipe is welded and communicated with the side wall of the upper part of the powder removing cylinder, a powder removing material outlet pipe is welded and communicated with the side wall of the bottom of the powder removing cylinder, the upper end opening of the powder removing cylinder is connected with the bottom of the cooling cylinder through a flange, two partition plates are welded on the inner wall of the cooling cylinder, a heat exchange cavity is formed between the two partition plates, a plurality of heat exchange tubes are connected between the two partition plates, the heat exchange tubes are communicated with the upper and lower surfaces of, the top of the cooling cylinder is provided with a gas collecting cavity, the side wall of the gas collecting cavity is welded and communicated with a cooling discharge port, the lower outer wall of the desulfurization cylinder is welded and communicated with a desulfurization inlet pipe, a gas guide pipe is connected between the cooling discharge port and the desulfurization inlet pipe, the interior of the desulfurization cylinder is provided with a desulfurization cylinder rotating shaft with coaxiality, the upper end of the desulfurization cylinder rotating shaft is rotatably connected with the top wall of the desulfurization cylinder, the outer wall of the desulfurization cylinder rotating shaft is welded and communicated with a guide blade, the upper outer wall of the desulfurization cylinder is welded and communicated with a desulfurization discharge pipe, the upper outer wall of the desulfurization cylinder is welded and communicated with a desulfurization material inlet pipe, the bottom of the desulfurization cylinder is provided with a desulfurization material discharge pipe, the lower outer wall of the denitrification cylinder is welded and communicated with a denitrification inlet pipe, the gas guide pipe is connected between the denitrification inlet pipe and the, the outer wall welding of denitration pivot has the guide blade, the upper portion outer wall welding intercommunication of a denitration section of thick bamboo has the flue gas discharge pipe, and the upper portion outer wall welding intercommunication of a denitration section of thick bamboo has denitration material admission pipe, and the bottom of a denitration section of thick bamboo is equipped with denitration material discharge pipe.

Preferably, the rotating shaft of the powder removing cylinder penetrates through the bottom of the powder removing cylinder, the lower end of the rotating shaft of the powder removing cylinder is connected with a first motor, the upper end of the rotating shaft of the powder removing cylinder is rotatably connected with a bearing seat, and the bearing seat is welded with the inner wall of the powder removing cylinder through a support rod.

preferably, a first filter screen layer is arranged at the upper port of the powder removing cylinder and is arranged above the inlet of the powder removing material inlet pipe.

Preferably, the upper end of a desulfurization section of thick bamboo pivot runs through the roof of a desulfurization section of thick bamboo, and the upper end of a desulfurization section of thick bamboo pivot is connected with the second motor, and the lower extreme of a desulfurization section of thick bamboo pivot rotates and is connected with the bearing frame, and the bearing frame passes through the inner wall welding of bracing piece and a desulfurization section of thick bamboo.

Preferably, a second filter screen layer is arranged above the inner wall of the desulfurization barrel, and the middle part of the second filter screen layer is in rotating contact with the rotating shaft of the desulfurization barrel.

Preferably, a second filter screen layer is arranged above the inner wall of the desulfurization barrel, and the middle part of the second filter screen layer is in rotating contact with the rotating shaft of the desulfurization barrel.

Preferably, the desulfurization discharge pipe is arranged above the second filter screen layer, and the inlet of the desulfurization material inlet pipe is arranged below the second filter screen layer.

Preferably, the upper end of denitration pivot runs through the roof of a denitration section of thick bamboo, and the upper end of denitration pivot is connected with the third motor, and the lower extreme of denitration pivot rotates and is connected with the bearing frame, and the bearing frame passes through the inner wall welding of bracing piece and a denitration section of thick bamboo.

Preferably, a third filter screen layer is arranged above the inner wall of the denitration cylinder, and the middle part of the third filter screen layer is in rotary contact with the denitration rotating shaft.

Preferably, the flue gas discharge pipe is arranged above the third filter screen layer, and an inlet of the denitration material inlet pipe is arranged below the third filter screen layer.

Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:

1. In the invention, the flue gas is upwards guided along a plurality of heat exchange tubes, cooling water is filled into the heat exchange cavity through the water inlet tube, and the cooling water exchanges heat with the flue gas passing through the heat exchange tubes, so that the temperature of the flue gas is reduced;

2. The invention does not contact with water when cooling, desulfurizing and denitrating the flue gas, and does not pollute water resources;

3. According to the invention, the spiral blade-shaped guide blades are arranged in the powder removing cylinder, the desulfurization cylinder and the denitration cylinder, so that the residence time of flue gas in the powder removing cylinder, the desulfurization cylinder and the denitration cylinder can be prolonged, and the efficiency of powder removing, desulfurization and denitration of the flue gas is effectively improved.

drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a powder removing cylinder and a cooling cylinder according to the present invention;

Fig. 3 is an elevational sectional view of the present invention.

in the figure: remove a powder section of thick bamboo 1, a cooling section of thick bamboo 2, a desulfurization section of thick bamboo 3, a denitration section of thick bamboo 4, a rotation shaft 5 of a powder section of thick bamboo, remove powder material admission pipe 6, remove powder material discharge pipe 61, baffle 7, heat transfer chamber 8, heat exchange tube 9, inlet tube 10, drain pipe 101, gas collecting chamber 11, flue gas admission pipe 12, cooling discharge port 121, desulfurization admission pipe 13, desulfurization discharge pipe 131, a desulfurization section of thick bamboo pivot 14, desulfurization material admission pipe 15, desulfurization material discharge pipe 151, denitration admission pipe 16, flue gas discharge pipe 161, denitration pivot 17, denitration material admission pipe 18, denitration material discharge pipe 181.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a flue gas purification and whitening treatment device for processing an electronic integrated board comprises a powder removing cylinder 1, a cooling cylinder 2, a desulfurization cylinder 3 and a denitration cylinder 4, as shown in figure 2, wherein the powder removing cylinder 1 is a cylinder with an upward opening, the powder removing cylinder 1 is internally filled with dust removing materials such as activated carbon, calcium carbonate and the like for removing dust in flue gas, the lower side wall of the powder removing cylinder 1 is welded and communicated with a flue gas inlet pipe 12, the flue gas inlet pipe 12 is connected with a flue gas inlet pipeline, the side wall of the upper part of the powder removing cylinder 1 is welded and communicated with an obliquely arranged powder removing material inlet pipe 6, the powder removing material inlet pipe 6 is connected with a feed valve through a flange, when the feed valve is opened, the dust removing materials are filled in the powder removing cylinder 1, the side wall of the bottom of the powder removing cylinder 1 is welded and communicated with an obliquely arranged powder removing material discharge pipe 61, the powder removing material discharge pipe 61 is connected with a discharge valve through a flange, when, the inside of the powder removing cylinder 1 is provided with a coaxial powder removing cylinder rotating shaft 5, the lower end of the powder removing cylinder rotating shaft 5 is rotatably connected with the bottom surface of the powder removing cylinder 1, the powder removing cylinder rotating shaft 5 penetrates through the bottom of the powder removing cylinder 1, the lower end of the powder removing cylinder rotating shaft 5 is connected with a first motor, the first motor is fixed with the lower surface of the powder removing cylinder 1 through bolts, the outer wall of the powder removing cylinder rotating shaft 5 is welded with a helical blade-shaped guide blade, the powder removing cylinder rotating shaft 5 is driven through the first motor, the guide blade on the powder removing cylinder rotating shaft 5 guides the dust removing material downwards, the old dust removing material is favorably discharged along a powder removing material discharge pipe 61, the material is favorably guided in from a powder removing material inlet pipe 6 to fill the inside of the powder removing cylinder 1, a distance of 3-5mm is reserved between the edge of the guide blade and the inner wall of the powder removing cylinder 1, and the helical blade forms a helical channel with the inner wall of the powder removing cylinder 1, make things convenient for the time that the flue gas is detained in the inside of a dusting section of thick bamboo 1, improve the absorption efficiency to dust in the flue gas, the upper end of dusting section of thick bamboo pivot 5 is rotated and is connected with the bearing frame, and the bearing frame passes through the bracing piece and the inner wall welding of dusting section of thick bamboo 1, strengthens the connection structure of dusting section of thick bamboo pivot 5.

As shown in fig. 2, a flange is welded on the outer wall of the upper port of the powder removing cylinder 1, the upper port of the powder removing cylinder 1 is connected with the bottom of the cooling cylinder 2 through the flange, a first filter screen layer is arranged at the upper port of the powder removing cylinder 1 and is arranged above the inlet of the powder removing material inlet pipe 6, the first filter screen layer prevents the dust removing material in the powder removing cylinder 1 from entering the inside of the cooling cylinder 2, two clapboards 7 are welded on the inner wall of the cooling cylinder 2, a heat exchange cavity 8 is formed between the two clapboards 7, a plurality of heat exchange pipes 9 are connected between the two clapboards 7, the heat exchange pipes 9 are communicated with the upper surface and the lower surface of the two clapboards 7, the flue gas is guided upwards along the plurality of heat exchange pipes 9, a water inlet pipe 10 is welded on the side wall of the bottom of the heat exchange cavity 8, the water inlet pipe 10 is connected with a water inlet valve, the water inlet valve is connected with, the temperature of flue gas is reduced, and the flue gas does not contact with water, does not cause the pollution to the water resource, and the top lateral wall welding intercommunication of heat transfer chamber 8 has drain pipe 101, discharges the water after the heat transfer, and the top of a cooling section of thick bamboo 2 is gas collecting chamber 11, and a dusting section of thick bamboo 1 collects the leading-in flue gas of many heat exchange tubes 9, and the lateral wall welding intercommunication of gas collecting chamber 11 has cooling discharge port 121.

Referring to fig. 1 and 3, a desulfurization inlet pipe 13 is welded and communicated with the outer wall of the lower portion of a desulfurization cylinder 3, a gas guide pipe is connected between a cooling outlet port 121 and the desulfurization inlet pipe 13, flue gas enters the desulfurization cylinder 3 through the desulfurization inlet pipe 13, a desulfurization material is filled in the desulfurization cylinder 3, a desulfurization material inlet pipe 15 which is obliquely arranged is welded and communicated with the outer wall of the upper portion of the desulfurization cylinder 3, the desulfurization material inlet pipe 15 is connected with a feed valve through a flange, the feed valve controls the entry of the desulfurization material, a desulfurization material outlet pipe 151 is arranged at the bottom of the desulfurization cylinder 3, a lower port of the desulfurization material outlet pipe 151 is connected with a discharge valve through a flange, the discharge valve controls the discharge of the desulfurization material, a coaxial desulfurization cylinder rotating shaft 14 is arranged in the desulfurization cylinder 3, the upper end of the desulfurization cylinder rotating shaft 14 is rotatably connected with the top wall of the desulfurization cylinder 3, and the upper end of, the upper end of the desulfurization cylinder rotating shaft 14 is connected with a second motor, the second motor is fixed at the top of the desulfurization cylinder 3 through bolts, the outer wall of the desulfurization cylinder rotating shaft 14 is welded with guide blades in the form of helical blades, the desulfurization cylinder rotating shaft 14 is driven through the second motor, the guide blades welded on the outer wall of the desulfurization cylinder rotating shaft 14 can discharge old desulfurization materials in the desulfurization cylinder 3 along a desulfurization material discharge pipe 151, new desulfurization materials entering through a desulfurization material inlet pipe 15 are introduced into and filled in the desulfurization cylinder 3, a 3-5mm distance is reserved between the edge of each guide blade and the inner wall of the desulfurization cylinder 3, a helical channel is formed between each helical blade-shaped guide blade and the inner wall of the desulfurization cylinder 3, the residence time of flue gas in the desulfurization cylinder 3 is prolonged, the desulfurization efficiency is ensured, the lower end of the desulfurization cylinder rotating shaft 14 is rotatably connected with a bearing seat, and the bearing seat is welded with the inner wall of the desulfurization cylinder 3 through a support rod, the structural connection to desulfurization section of thick bamboo pivot 14 strengthens, the inner wall top of desulfurization section of thick bamboo 3 is equipped with the second filter screen layer, and the middle part and the 14 rotation contacts of desulfurization section of thick bamboo pivot of second filter screen layer, the upper portion outer wall welding intercommunication of desulfurization section of thick bamboo 3 has desulfurization discharge pipe 131, desulfurization discharge pipe 131 sets up the top of second filter screen layer, the setting of 15 entrances of desulfurization material admission pipe is in the below of second filter screen layer, the second filter screen layer prevents that the desulfurization material from entering into desulfurization discharge pipe 131.

referring to fig. 1 and 3, a denitration inlet pipe 16 is welded and communicated with the outer wall of the lower portion of a denitration cylinder 4, an air guide pipe is connected between the denitration inlet pipe 16 and a denitration outlet pipe 131, desulfurized flue gas enters the denitration cylinder 4, denitration materials are filled in the denitration cylinder 4, a denitration material inlet pipe 18 is welded and communicated with the outer wall of the upper portion of the denitration cylinder 4, the denitration material inlet pipe 18 is connected with a feed valve through a flange, the feed valve can control the inlet of the denitration materials, a denitration material outlet pipe 181 is arranged at the bottom of the denitration cylinder 4, the denitration material outlet pipe 181 is connected with a discharge valve through a flange, the discharge valve controls the outlet of the denitration materials, a denitration rotating shaft 17 with the same axis is arranged in the denitration cylinder 4, the upper end of the denitration rotating shaft 17 is rotatably connected with the top wall of the denitration cylinder 4, the upper end of the denitration rotating shaft 17 penetrates through the top wall of the, a third motor is fixed on the top of the denitration cylinder 4 through bolts, guide blades in the form of helical blades are welded on the outer wall of the denitration rotating shaft 17, the denitration rotating shaft 17 is driven through the third motor, old denitration materials are discharged along a denitration material discharge pipe 181 by the guide blades arranged on the outer wall of the denitration rotating shaft 17, the denitration materials entering through a denitration material inlet pipe 18 are guided into the denitration cylinder 4, a bearing seat is rotatably connected to the lower end of the denitration rotating shaft 17 and is welded with the inner wall of the denitration cylinder 4 through a support rod, the connecting structure of the denitration rotating shaft 17 is reinforced, a 3-5mm distance is reserved between the edge of each guide blade and the inner wall of the denitration cylinder 4, a helical guide is formed between the bolt-shaped guide blade welded on the outer wall of the denitration rotating shaft 17 and the inner wall of the denitration cylinder 4, the residence time of flue gas in the denitration cylinder 4 is increased, and the denitration efficiency of the flue gas is, the inner wall top of denitration section of thick bamboo 4 is equipped with the third filter screen layer, and the middle part of third filter screen layer and denitration pivot 17 rotate the contact, and the upper portion outer wall welding intercommunication of denitration section of thick bamboo 4 has flue gas discharge pipe 161, and flue gas discharge pipe 161 sets up the top at the third filter screen layer, and denitration material admission pipe 18 entry sets up the below at the third filter screen layer, prevents that the denitration material from entering into flue gas discharge pipe 161.

The working principle is as follows: when the dust removing device works, the smoke inlet pipe 12 is connected with the smoke inlet pipeline, so that smoke enters the inside of the dust removing cylinder 1, dust in the smoke is removed by dust removing materials filled in the dust removing cylinder 1, the rotating shaft 5 of the dust removing cylinder is driven by the first motor, the dust removing materials are guided downwards by the guide blades on the rotating shaft 5 of the dust removing cylinder, the old dust removing materials are favorably discharged along the dust removing material discharge pipe 61, the materials are favorably guided in from the dust removing material inlet pipe 6, the inside of the dust removing cylinder 1 is filled, the spiral blade-shaped guide blades and the inner wall of the dust removing cylinder 1 form a spiral channel, the time of the smoke staying in the dust removing cylinder 1 is facilitated, and the dust absorption efficiency in the smoke is improved;

The flue gas after dust treatment is upwards guided along the heat exchange tubes 9, cooling water is filled into the heat exchange cavity 8 through the water inlet tube 10, the cooling water exchanges heat with the flue gas passing through the heat exchange tubes 9, the temperature of the flue gas is reduced, the flue gas is not in contact with water, no pollution is caused to water resources, and the water after heat exchange is discharged along the water discharge tube 101;

The flue gas enters the inside of the desulfurization cylinder 3 through the desulfurization inlet pipe 13, the desulfurization materials filled in the desulfurization cylinder 3 absorb sulfides in the flue gas, the desulfurization cylinder rotating shaft 14 is driven through the second motor, the guide blades welded on the outer wall of the desulfurization cylinder rotating shaft 14 are beneficial to discharging old desulfurization materials in the desulfurization cylinder 3 along the desulfurization material discharging pipe 151, new desulfurization materials entering the desulfurization cylinder 3 are led into the desulfurization material inlet pipe 15, a spiral channel is formed between the spiral blade-shaped guide blades and the inner wall of the desulfurization cylinder 3, the residence time of the flue gas in the desulfurization cylinder 3 is prolonged, and the desulfurization efficiency is ensured;

Flue gas after the desulfurization gets into the inside of a denitration section of thick bamboo 4, denitration material that denitration section of thick bamboo 4 inside was filled carries out the denitration to the flue gas, drive denitration pivot 17 through the third motor, the guide blade that denitration pivot 17 outer wall was established is favorable to discharging old denitration material along denitration material discharge pipe 181, the leading-in inside of filling denitration section of thick bamboo 4 of denitration material that gets into denitration material admission pipe 18, form the heliciform and lead between the inner wall of denitration pivot 17 outer wall welded bolt form guide blade and denitration section of thick bamboo 4, increase the residence time of flue gas in denitration section of thick bamboo 4 inside, the improvement is to the denitration efficiency of flue gas.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.