CN117085481A - A kind of flue gas denitrification equipment for dry cement production line - Google Patents

Abstract

The invention relates to flue gas denitration equipment of a dry cement production line, which belongs to the technical field of cement flue gas treatment and comprises a reaction pipeline, wherein an air inlet for feeding flue gas is formed in the reaction pipeline, an ash accumulation hopper is communicated with the lower end of the reaction pipeline, the air inlet is arranged at a position, close to the lower part, of the reaction pipeline, and a dry powder module is arranged at a position, close to the upper part, of the reaction pipeline.

Description

A kind of dry process cement production line flue gas denitrification equipment

Technical field

The invention relates to the technical field of cement flue gas treatment, specifically a dry process cement production line flue gas denitrification equipment.

Background technique

Currently, there are many methods for treating cement flue gas, among which dry treatment is a commonly used method. Its main purpose is to pass the flue gas into the pipe and spray chemical dust into the pipe that can react with harmful substances in the flue gas to remove or desulfurize, thereby achieving treatment. Part of the treated dust will directly precipitate and be collected, but some will mix with the treated flue gas. If the purified flue gas is directly discharged, dust pollution will occur.

Therefore, further filtration treatment is required. In the existing technology, the lower-cost bag dust removal method is generally used for processing. However, due to the large amount of flue gas, the filtration efficiency of the bag will quickly decrease. The bag dust removal needs to be cleaned or replaced, which is troublesome to use. high cost.

Contents of the invention

The technical problem of the present invention is to provide a dry process cement production line flue gas denitration equipment that does not require frequent replacement of cloth bags, can realize automatic cleaning, and improves the service life and processing efficiency.

In order to achieve the above object, the present invention provides the following technical solution: a dry process cement production line flue gas denitration equipment, including a reaction pipe, the reaction pipe is provided with an air inlet for smoke inlet, the lower end of the reaction pipe is connected with Ash accumulation hopper, the air inlet is provided near the lower part of the reaction pipe, and the dry powder module is provided above the reaction pipe.

As a further solution of the present invention, the upper end of the reaction pipe is connected with a filter pipe, the filter pipe is arranged horizontally, the filter pipe and the reaction pipe are rotationally connected, and the filter pipe is provided with a motor for driving the filter pipe to rotate, The filter tube is provided with a plurality of filter mechanisms in a linear array along the axis of the filter tube.

As a further solution of the present invention, the filtering mechanism includes a diverter cylinder provided through the filter tube. A chute is provided in the diverter cylinder. A cloth bag is slidably connected to the diverter cylinder. One end of the cloth bag is fixedly connected to a limiting block. Slidingly connected with the chute limiter.

As a further solution of the present invention, a weight block is provided at an end of the bag away from the limiting block.

As a further solution of the present invention, a sliding rod 1 is provided inside the bag. The sliding rod 1 is slidingly connected to the counterweight block, and the parts of the plurality of sliding rods 1 located outside the bag are fixedly connected to each other.

As a further solution of the present invention, both ends of the sliding rod are provided with sealing mechanisms. The sealing mechanism includes a sealing cover fixedly connected to one end of the sliding rod. The sealing cover can be fitted with one end of the diverter tube.

As a further solution of the present invention, the sealing mechanism also includes a shaking mechanism. The shaking mechanism includes a gasket slidably connected to the sliding rod 1 and located outside the bag. The sealing cover is fixedly connected to the gasket. spring.

As a further solution of the present invention, the part of the diverter tube located in the filter tube is provided with a through hole, and an air inlet cylinder is fixedly connected to one side of the through hole, and an air inlet plate is fixedly connected to the air inlet cylinder. There are symmetrically arranged valve ports two and three on the plate. The axis of the air inlet plate is fixedly connected to a rotating shaft. The rotating shaft is rotatably connected to a shielding plate. The position on the shielding plate away from the center of the circle is fixedly connected to Eccentric block, a valve port is provided on the baffle plate.

As a further solution of the present invention, the filter tube is also provided with a knocking mechanism, and a plurality of the knocking mechanisms are arranged symmetrically in a linear array on the filter tube along the axis of the filter tube, and correspond one to one to the position of the bag. The knocking mechanism includes a fixed rod fixedly connected to the filter tube. A rocking rod is rotatably connected to the fixed rod. Two sliding rods are slidingly connected to the rocking rod. Both ends of the sliding rod two are fixedly connected to contact rods. A spring is set on the second sliding rod between the rocker rod and the contact rod, and the two contact rods are equidistant from the rocker rod.

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

1. Since the reaction pipe is long, it takes a long time for the flue gas to pass through the reaction pipe. However, at the same time, the dry powder of the dry powder module is sprayed downward, so full contact with the flue gas can be achieved, and the flue gas can be fully processed while ensuring that the dry powder is Full use.

2. Dust can be filtered through the bag, and the bag can be automatically cleaned by simply turning the filter tube. There is no need to disassemble the bag, which is easy to use.

3. The shaking mechanism can make the bag shake along the axis of the sliding rod, thereby promoting the detachment of dust attached to the bag. The knocking mechanism can promote the detachment of dust on the flipped bag. At the same time, the spring on the second sliding rod can play a role. Buffering and multiple impact effects, both mechanisms can achieve automatic processing effects.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings needed to describe the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

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

Figure 2 is a partial schematic diagram of the filter tube of the present invention;

Figure 3 is a schematic structural diagram of the baffle part of the present invention;

Figure 4 is a schematic diagram of the structural parts of the baffle part of the present invention;

Figure 5 is a schematic diagram of a partial cross-sectional structure of the filter tube of the present invention;

Figure 6 is a schematic diagram of a partial cross-sectional structure of the cloth bag of the present invention;

Figure 7 is a partial cross-sectional structural schematic diagram of the diverter tube of the present invention.

In the drawings, the parts represented by each number are listed as follows:

01. Reaction pipeline; 02. Dust hopper; 03. Dry powder module; 04. Air inlet; 05. Filter tube; 06. Motor; 07. Diverter tube; 08. Cloth bag; 09. Rocker; 10. Slide rod two; 11. Contact rod; 12. Slide rod one; 13. Sealing cover; 14. Fixed rod; 15. Eccentric block; 16. Rotating shaft; 17. Shielding plate; 18. Air inlet plate; 19. Valve port one; 20. Valve port Two; 21. Valve port three; 22. Air inlet cylinder; 23. Counterweight block; 24. Gasket; 25. Slide groove; 26. Limit block; 27. Through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some 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 fall within the scope of protection of the present invention.

Please refer to Figures 1 to 7. The present invention provides a technical solution: a dry process cement production line flue gas denitration equipment, including a reaction pipe 01. The reaction pipe 01 is provided with an air inlet 04 for inlet smoke. The reaction pipe 01 The lower end of the reaction pipe 01 is connected with an ash hopper 02, the air inlet 04 is provided near the bottom of the reaction pipe 01, and a dry powder module 03 is provided above the reaction pipe 01.

When used, the flue gas generated by cement production is directly introduced into the reaction pipe 01 through the air inlet 04, and the flue gas will flow upward along the reaction pipe 01. At this time, the dry powder module 03 is sprayed into the reaction pipe 01. The dry powder used will flow downward along the reaction pipe 01, but the flue gas will flow upward, so the flue gas can be removed, and the powder will fall directly downward and be collected by the ash hopper 02; because the reaction pipe 01 is longer, so it takes a longer time for the flue gas to pass through the reaction pipe 01, but at the same time, the dry powder from the dry powder module 03 is sprayed downward, so full contact with the flue gas can be achieved, the flue gas can be fully processed, and at the same time, the dry powder can be fully absorbed use.

As a further solution of the present invention, the upper end of the reaction pipe 01 is connected with a filter pipe 05. The filter pipe 05 is arranged horizontally. The filter pipe 05 and the reaction pipe 01 are rotationally connected. The filter pipe 05 is provided with a motor 06 for driving the filter pipe 05 to rotate. A plurality of filtering mechanisms are arranged in a linear array along the axis of the filter tube 05 on the filter tube 05 .

Since the flue gas continues to flow, not all the dust will fall directly into the dust hopper 02. Therefore, some dust will be blown into the filter tube 05 along with the flue gas. Therefore, it is necessary to realize the dust and purified The flue gas is separated to prevent dust pollution;

When the flue gas carrying dust enters the filter tube 05, it will be filtered by the filter mechanism.

As a further solution of the present invention, the filtering mechanism includes a diverter cylinder 07 arranged through the filter tube 05. A chute 25 is provided in the diverter cylinder 07. A cloth bag 08 is slidably connected to the diverter cylinder 07, and one end of the cloth bag 08 is fixedly connected to a limiting block 26. It is slidingly connected to the chute 25.

After the smoke enters the filter tube 05, it will flow into the bag 08. The smoke will enter the bag 08. The bag 08 will intercept the dust. The purified air will be directly discharged to the outside through the bag 08, thus realizing the filtering function. ;

As filtration proceeds, the increase in dust will reduce the permeability of the bag 08, and the filtration efficiency of the bag 08 will decrease, so the bag 08 needs to be cleaned;

As a further solution of the present invention, a counterweight block 23 is provided at the end of the bag 08 away from the limiting block 26 .

The motor 06 will control the rotation of the filter tube 05, and the filter tube 05 will drive the cloth bag 08 to rotate. The filter tube 05 will rotate one hundred and eighty degrees, and the cloth bag 08 will rotate from the position below the filter tube 05 to the top position. When, under the action of gravity, the limit block 26 will slide downward in the chute 25. At the same time, due to the presence of the counterweight block 23, which is located inside the bag 08, the counterweight block 23 will also continue to move downward, thus The counterweight block 23 will pull the end of the cloth bag 08 close to the counterweight block 23 to move simultaneously until it moves to the lower end, so that the inner wall of the cloth bag 08 will be flipped to the outside, and the inner and outer bags of the cloth bag 08 will be flipped, so that the contents originally contained in the cloth bag 08 The dust will be poured out, and then all the structural states will be the same as in Figure 1. At the end of the movement, only the inner and outer bags of the bag 08 will be turned over. Therefore, as the filter tube 05 rotates half a turn, the inner and outer bags of the bag 08 will be turned over once. The dust contained in the bag 08 is filtered;

Dust filtration can be achieved through the cloth bag 08. At the same time, the automatic cleaning of the cloth bag 08 can be realized by simply turning the filter tube 05. There is no need to disassemble the cloth bag 08, making it easy to use.

As a further solution of the present invention, a sliding rod 12 is provided inside the bag 08. The sliding rod 12 is slidingly connected to the counterweight block 23, and the parts of the multiple sliding rods 12 located outside the bag 08 are fixedly connected to each other.

The provided sliding rod 12 can make the counterweight block 23 slide linearly to ensure that the bag 08 can be turned over smoothly for bag turning.

As a further solution of the present invention, both ends of the sliding rod 12 are provided with sealing mechanisms. The sealing mechanism includes a sealing cover 13 fixedly connected to one end of the sliding rod 12. The sealing cover 13 can be fitted with one end of the diverter tube 07.

The sealing cover 13 can be fitted with one end of the diverter tube 07 to achieve sealing. When the filter tube 05 rotates, the sliding rod 12 will also move simultaneously with the bag 08. As shown in Figure 6, the upper sealing cover 13 will Move to the bottom of the filter tube 05, and the sealing cover 13 below is fitted with the diverter tube 07 to achieve airtightness, thereby ensuring that the smoke can enter the bag 08 without leaking; in addition, the counterweight 23 and the sliding rod 12 The center of gravity can be shifted, so that the bag 08 is always vertically downward, in the state shown in Figure 1. By reducing the motor load, the motor can be opened when only the filter tube 05 needs to rotate.

As a further solution of the present invention, the sealing mechanism also includes a shaking mechanism. The shaking mechanism includes a gasket 24 slidably connected to the sliding rod 12 and located outside the bag 08. The sealing cover 13 is fixedly connected to a spring fixedly connected to the gasket 24. .

Whenever a flip is performed, the counterweight 23 will slide from one end of the sliding rod 12 to the other end. When the flip is completed, the sealing cover 13 is at the bottom, so when the counterweight 23 is about to slide When it comes into contact with the position of the gasket 24, it will collide with the gasket 24, which will compress the spring on the sealing cover 13. One of the springs can be buffered to prevent the weight block 23 from being overweight and causing the bag 08 to pull and stretch due to excessive inertia. At the same time, the spring will perform simple harmonic motion, which can cause the bag 08 to shake along the axis of the slide rod 12, thereby promoting the detachment of dust attached to the bag 08.

As a further solution of the present invention, the part of the diverter tube 07 located in the filter tube 05 is provided with a through hole 27, one side of the through hole 27 is fixedly connected with an air inlet cylinder 22, and the air inlet cylinder 22 is fixedly connected with an air inlet plate 18. The air inlet plate 18 is provided with symmetrically arranged valve ports two 20 and three valves 21. The axis of the air inlet plate 18 is fixedly connected to a rotating shaft 16, and the rotating shaft 16 is rotatably connected to a baffle plate 17. The baffle plate 17 is far away from the center of the circle. An eccentric block 15 is fixedly connected to the position, and a valve port 19 is provided on the shielding plate 17 .

When the flip is completed, as shown in Figure 4 and Figure 5, under the action of gravity, the eccentric block 15 will be at the bottom of the shielding plate 17, so the valve port 19 on the shielding plate 17 can connect with the valve port 2 on the air inlet plate 18 20 overlap, so that the smoke can circulate in the filter tube 05 and enter the bag 08. However, when the filter tube 05 is turned over, under the action of gravity, the eccentric block 15 will keep the center of gravity of the shielding plate 17 downward, thus The baffle plate 17 will not rotate, but will only rotate relative to the air inlet plate 18. Therefore, the valve port one 19 on the baffle plate 17 will begin to be misaligned with the valve port two 20 on the air inlet plate 18, so that the valve port one 19 is no longer aligned with the air inlet plate 18. Valve port two 20 is connected, so that when the bag 08 is turned over, the flue gas will not flow, and the diverter tube 07 is sealed to prevent dust in the bag 08 from entering the filter tube 05. When the turning is completed, valve port three 21 will Rotate to the top, but the position of the baffle plate 17 does not change, so the valve port three 21 is connected to the valve port one 19. Therefore, the rotation of the filter tube 05 will make the valve port two 20 and the valve port three 21 alternately connected to the valve port one 19.

As a further solution of the present invention, the filter tube 05 is also provided with a knocking mechanism. Multiple knocking mechanisms are arranged symmetrically in a linear array on the filter tube 05 along the axis of the filter tube 05, and correspond to the positions of the bag 08 one by one. The knocking mechanism includes a fixed rod 14 fixedly connected to the filter tube 05. The fixed rod 14 is rotatably connected to a rocker 09. The rocker 09 is slidably connected to a sliding rod 10. Both ends of the sliding rod 10 are fixedly connected to contact rods. 11. A spring is set on the sliding rod 2 10 between the rocker 09 and the contact rod 11. The two contact rods 11 are at the same distance from the rocker 09.

When the filter tube 05 rotates, the rocker 09 can also rotate on the fixed rod 14, so that under the action of inertia, the rocker 09 will drive the sliding rod 10 to drive the contact rod 11 to move at the same time, so that the contact rod 11 It can knock on the outer wall of the bag 08 to promote the detachment of dust on the overturned bag 08. At the same time, the spring on the sliding rod 210 can play a buffering and multiple impact effect.

Claims (9)

1. A dry process cement production line flue gas denitrification equipment, including a reaction pipe (01), which is characterized in that: the reaction pipe (01) is provided with an air inlet (04) for introducing smoke, and the reaction pipe (01) The lower end of 01) is connected with a ash hopper (02), the air inlet (04) is provided near the bottom of the reaction pipe (01), and a dry powder module (03) is provided above the reaction pipe (01). . 2. A dry process cement production line flue gas denitrification equipment according to claim 1, characterized in that: the upper end of the reaction pipe (01) is connected with a filter pipe (05), and the filter pipe (05) is arranged horizontally, The filter tube (05) is rotatably connected to the reaction pipe (01). The filter tube (05) is provided with a motor (06) for driving the filter tube (05) to rotate. The upper edge of the filter tube (05) A plurality of filter mechanisms are arranged in a linear array along the axis of the filter tube (05). 3. A dry process cement production line flue gas denitrification equipment according to claim 2, characterized in that: the filtering mechanism includes a diverter cylinder (07) arranged through the filter tube (05), the diverter cylinder (07) A chute (25) is provided inside, and a cloth bag (08) is slidingly connected to the diverter tube (07). One end of the bag (08) is fixedly connected to a limiting block (26) and the chute (25) to limit the sliding movement. connect. 4. A dry process cement production line flue gas denitration equipment according to claim 3, characterized in that: a counterweight block (23) is provided at one end of the bag (08) away from the limiting block (26). 5. A dry process cement production line flue gas denitration equipment according to claim 4, characterized in that: a sliding rod (12) is provided inside the bag (08), and the sliding rod (12) and a counterweight The blocks (23) are slidingly connected, and the parts of the plurality of sliding rods (12) located outside the bag (08) are fixedly connected to each other. 6. A dry process cement production line flue gas denitration equipment according to claim 5, characterized in that: both ends of the sliding rod (12) are provided with sealing mechanisms, and the sealing mechanism includes a fixedly connected sliding rod (12). 12) A sealing cover (13) at one end. The sealing cover (13) can be fitted with one end of the diverter tube (07). 7. A dry process cement production line flue gas denitrification equipment according to claim 6, characterized in that: the sealing mechanism also includes a shaking mechanism, and the shaking mechanism includes a sliding rod (12) slidably connected to a cloth bag. (08) The outer part of the gasket (24), the sealing cover (13) is fixedly connected with a spring that is fixedly connected to the gasket (24). 8. A dry process cement production line flue gas denitrification equipment according to claim 3, characterized in that: the part of the diverter tube (07) located in the filter tube (05) has a through hole (27), wherein An air inlet tube (22) is fixedly connected to the through hole (27) on one side, an air inlet plate (18) is fixedly connected to the air inlet tube (22), and symmetrically arranged valves are provided on the air inlet plate (18). Port two (20) and valve port three (21), the axis of the air inlet plate (18) is fixedly connected to a rotating shaft (16), and the rotating shaft (16) is rotatably connected to a shielding plate (17). An eccentric block (15) is fixedly connected to the shielding plate (17) at a position far away from the center of the circle, and a valve port (19) is provided on the shielding plate (17). 9. A dry process cement production line flue gas denitrification equipment according to claim 3, characterized in that: the filter tube (05) is also provided with a knocking mechanism, and the knocking mechanism is on the filter tube (05) There are multiple linear arrays symmetrically arranged along the axis of the filter tube (05), corresponding to the positions of the bags (08). The knocking mechanism includes a fixed rod (14) fixedly connected to the filter tube (05), so The fixed rod (14) is rotatably connected to a rocker (09), the rocker (09) is slidably connected to two sliding rods (10), and both ends of the two sliding rods (10) are fixedly connected to contact rods ( 11). A spring is set on the second sliding rod (10) between the rocker rod (09) and the contact rod (11). The two contact rods (11) are equidistant from the rocker rod (09).