CN216457965U

CN216457965U - Dry-wet combined cement kiln desulfurization device

Info

Publication number: CN216457965U
Application number: CN202122729720.XU
Authority: CN
Inventors: 朱伟; 甘爱均; 别建敏; 姬海军; 朱玲玲; 李金刚; 王贺
Original assignee: Nanyang Zhonglian Cement Co ltd
Current assignee: Nanyang Zhonglian Cement Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-05-10
Anticipated expiration: 2031-11-09

Abstract

The utility model provides a dry and wet cement kiln desulphurization unit who combines, including columniform retort, rotate on the retort and install the end cover that the coaxial line set up, the hollow shaft is installed to retort internal rotation, the retort one end of hollow shaft is stretched out the retort, retort internally mounted has the filter, the filter is reaction zone and release area with retort internal partitioning, the intercommunication has a plurality of blast pipes on the hollow shaft is located reaction zone and hollow shaft, all be equipped with the air jet on a plurality of blast pipes, the axis of a plurality of blast pipes all sets up perpendicularly with the axis of hollow shaft, install annular inlet tube on the end cover, and be fixed with the aqueous ammonia supply ware with the inlet tube intercommunication on the end cover, install drive hollow shaft pivoted drive assembly on the retort, the intercommunication has a plurality of water spray assemblies on the inlet tube. The reaction time of the tail gas can be prolonged, so that the thorough reaction of sulfides in the tail gas is improved, and the effect of tail gas emission is improved.

Description

Dry-wet combined cement kiln desulfurization device

Technical Field

The utility model relates to the technical field of cement production equipment, in particular to a dry-wet combined cement kiln desulfurization device.

Background

The desulfurization and denitrification device is equipment for purifying flue gas, can effectively treat sulfur and nitrate in the flue gas, and reduces the pollution to air. In the cement production process, sulfur from fuel and raw materials generates SO2 in the process of raw meal curing, and theoretical estimation shows that a cement production line with the energy production capacity of 5000 tons/day discharges 500000Nm/h flue gas, the concentration of SO2 in the flue gas is more than 1500mg/Nm3, and the concentration of SO2 discharged into the atmosphere per day is more than 18 tons, SO that the environmental pollution is conceivably known, and therefore, the desulfurization of the tail gas of the cement kiln is not slow.

At present, aiming at the treatment of the tail gas of the cement kiln, the limestone-gypsum wet desulphurization technology cannot be adopted on a large scale due to the limitation of sites, most cement plants adopt ammonia water spraying at the tail part of the kiln for desulphurization, and the process mainly has the following problems: 1. the tail gas cannot completely react with the ammonia water due to high spraying speed and large amount of the tail gas, so that the reaction is incomplete; 2. the particles produced after the reaction easily block the filtering device, thereby affecting the exhaust of tail gas after filtering, and easily adhering to the inner wall of the device, corroding the device after long-term use, and reducing the service life of the device.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a dry-wet combined cement kiln desulfurization device, which can improve the reaction degree of the tail gas, reduce the occurrence of incomplete reaction, and further improve the emission standard of the tail gas.

The utility model provides a dry and wet cement kiln desulphurization unit who combines, including columniform retort, the last end cover of rotating installation coaxial line setting of retort, the hollow shaft is installed in retort internal rotation, the retort is stretched out to the one end of hollow shaft, retort internally mounted has the filter, the filter is reaction zone and release area with retort internal partitioning, the intercommunication has a plurality of blast pipes on the hollow shaft is located reaction zone and the hollow shaft, all be equipped with the air jet on a plurality of blast pipes, the axis of a plurality of blast pipes all sets up with the axis of hollow shaft is perpendicular, install annular inlet tube on the end cover, and be fixed with the aqueous ammonia feeder with the inlet tube intercommunication on the end cover, install drive hollow shaft pivoted drive assembly on the retort, the intercommunication has a plurality of water spray assemblies on the inlet tube.

Preferably, drive assembly includes driving motor, install the bull stick on driving motor's the output, coaxial line is fixed with gear and action wheel on the bull stick, be fixed with the ring gear on the end cover, mesh between gear and the ring gear, coaxial line is fixed with from the driving wheel on the hollow shaft, the action wheel with follow is connected through the belt between the driving wheel.

Preferably, the water spray assembly comprises a plurality of downcomers arranged in parallel with the axis of the hollow shaft, the plurality of downcomers are distributed along the axis circumference of the hollow shaft in an array manner, a plurality of ammonia water spray pipes are fixed on the plurality of downcomers, the axes of the ammonia water spray pipes are perpendicular to the downcomers, the ammonia water spray pipes extend towards the hollow shaft, and ammonia water nozzles are installed on the ammonia water spray pipes.

Preferably, the end of the hollow shaft, which is far away from the end cover, is fixed with a cleaning plate matched with the filter plate.

Preferably, the reaction barrel is provided with a circular receiving groove, the receiving groove is communicated with the reaction zone and is level with the lower end part of the filter plate, and the receiving groove is provided with a cleaning opening capable of being opened and closed.

Preferably, the filter is inverted funnel-shaped and the filter and the hollow shaft are arranged coaxially.

Preferably, be fixed with a plurality of scrapers with the contact of reaction barrel inner wall on the inlet tube, a plurality of scrapers all stop axis parallel arrangement with the reaction.

The utility model has the beneficial effects that: can make tail gas increase at the time of reaction, improve the reaction sufficiency of tail gas, in time clear up filtering component, improve tail gas and avoid filtering component's jam at exhaust effect, clear up the device inner wall simultaneously, improve device's life.

Drawings

FIG. 1 is a schematic view of the overall axial side structure of the present invention.

Fig. 2 is a schematic structural view of the whole internal front face of the present invention.

Fig. 3 is a schematic view of the overall internal shaft side structure of the present invention.

Fig. 4 is a schematic structural view of the whole water inlet pipe shaft side of the utility model.

Fig. 5 is a schematic view of the overall internal structure of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in the figures 1, 2, 3, 4 and 5, the dry-wet combined cement kiln desulfurization device comprises a cylindrical reaction barrel 1 and is characterized in that an end cover 2 which is coaxially arranged is rotatably arranged on the reaction barrel 1, a hollow shaft 5 is rotatably arranged in the reaction barrel 1, one end of the hollow shaft 5 extends out of the reaction barrel 1, a filter plate 17 is arranged in the reaction barrel 1, the filter plate 17 divides the interior of the reaction barrel 1 into a reaction area and a release area, the hollow shaft 5 is positioned in the reaction area, the hollow shaft 5 is communicated with a plurality of exhaust pipes 11, the exhaust pipes 11 are respectively provided with an air nozzle 14, the axes of the exhaust pipes 11 are respectively vertical to the axis of the hollow shaft 5, an annular water inlet pipe 12 is arranged on the end cover 2, an ammonia water supply device communicated with the water inlet pipe 12 is fixed on the end cover 2, and a driving component for driving the hollow shaft 5 to rotate is arranged on the reaction barrel 1, a plurality of water spraying components are communicated with the water inlet pipe 12.

When the device is used, the device is firstly placed at a position needing to work, and then tail gas needing to be processed is introduced into the hollow shaft 5 through the exhaust device, so that the tail gas is exhausted through the exhaust pipes 11 and the air nozzles 14, the tail gas is enabled to enter the reaction zone, through the arrangement of the transverse exhaust pipes 11, the time of the tail gas staying in the reaction zone can be prolonged during use, at the moment, the ammonia water is supplied to the ammonia water supplier through the water inlet pipe 12, through the arrangement of the water spraying assemblies, the ammonia water and the tail gas are enabled to react, the tail gas after the reaction is completed is filtered through the filter plate 17, the sediment is filtered, the release zone after the filter plate 17 is passed, the emission is realized, the treatment effect and the reaction time of the tail gas are improved, the drive assembly drives the hollow shaft 5 to rotate, the direction of the exhaust pipes 11 is constantly changed, the range of the tail gas in the reaction zone is further improved, the retention time of the tail gas in the reaction zone is improved.

Drive assembly includes driving motor 9, install bull stick 7 on driving motor 9's the output, coaxial line is fixed with gear 8 and action wheel 6 on the bull stick 7, be fixed with ring gear 3 on the end cover 2, mesh between gear 8 and the ring gear 3, coaxial line is fixed with from driving wheel 4 on the hollow shaft 5, action wheel 6 with connect through the belt between the driving wheel 4.

Use start-up driving motor 9 for driving motor 9 drives bull stick 7 and rotates, through the meshing of gear 8 and ring gear 3, and action wheel 6 and the belt linkage from between driving wheel 4, thereby make the continuous rotation of water spray assembly and jet-propelled pipe, improve the scope of reaction between tail gas and the aqueous ammonia, and then improve the effect and the efficiency of reaction.

The water spray assembly comprises a plurality of downcomers 16 which are parallel to the axis of the hollow shaft 5, the downcomers 16 are distributed along the axis circumference of the hollow shaft 5 in an array manner, a plurality of ammonia water spray pipes 13 are fixed on the downcomers 16, the axes of the ammonia water spray pipes 13 are perpendicular to the downcomers 16, the ammonia water spray pipes 13 extend towards the hollow shaft 5, and ammonia water nozzles 15 are installed on the ammonia water spray pipes 13.

With the equal horizontal setting of aqueous ammonia spray tube 13 and blast pipe 11 to make tail gas and aqueous ammonia object blowout, and then improve the reaction effect that tail gas stops realization and tail gas, further improvement device's result of use.

A cleaning plate 18 matched with the filter plate 17 is fixed on one end of the hollow shaft 5 far away from the end cover 2.

Through setting up clearance board 18, can carry out the condition to the sediment on the filter 17 during the use to improve the effect of passing through of tail gas.

The reaction barrel 1 is provided with a circular ring-shaped receiving groove 10, the receiving groove 10 is communicated with the reaction zone and is level with the lower end part of the filter plate 17, and the receiving groove 10 is provided with a cleaning opening which can be opened and closed.

Through setting up the accepting groove 10, can receive the sediment of clearance to accessible clearance mouth carries out timely clearance to the sediment.

The filter 17 is inverted funnel-shaped and the filter 17 is arranged coaxially with the hollow shaft 5.

The conical filter plate 17 further improves the drainage of the sediment on the filter plate 17, so that the sediment flows better to the receiving tank 10.

A plurality of scrapers 19 in contact with the inner wall of the reaction barrel 1 are fixed on the water inlet pipe 12, and the scrapers 19 are all arranged in parallel with the reaction stopping axis.

The condition of the sediment on the inner wall can be carried out by arranging the scraper 19, the device is prevented from being damaged for a long time, and the service life of the device is prolonged.

The above-mentioned embodiments do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should be included in the protection scope defined by the claims of the present invention without departing from the design concept of the present invention.

Claims

1. The dry-wet combined cement kiln desulfurization device comprises a cylindrical reaction barrel (1) and is characterized in that an end cover (2) which is coaxially arranged is rotatably arranged on the reaction barrel (1), a hollow shaft (5) is rotatably arranged in the reaction barrel (1), one end of the hollow shaft (5) extends out of the reaction barrel (1), a filter plate (17) is arranged in the reaction barrel (1), the filter plate (17) divides the interior of the reaction barrel (1) into a reaction area and a release area, the hollow shaft (5) is positioned in the reaction area, the hollow shaft (5) is communicated with a plurality of exhaust pipes (11), the exhaust pipes (11) are respectively provided with an air nozzle (14), the axes of the exhaust pipes (11) are respectively vertical to the axis of the hollow shaft (5), the end cover (2) is provided with an annular water inlet pipe (12), and an ammonia water feeder communicated with the water inlet pipe (12) is fixed on the end cover (2), the reaction barrel (1) is provided with a driving assembly for driving the hollow shaft (5) to rotate, and the water inlet pipe (12) is communicated with a plurality of water spraying assemblies.

2. The dry-wet combined cement kiln desulfurization device according to claim 1, characterized in that the driving assembly comprises a driving motor (9), a rotating rod (7) is installed on the output end of the driving motor (9), a gear (8) and a driving wheel (6) are coaxially fixed on the rotating rod (7), a gear ring (3) is fixed on the end cover (2), the gear (8) and the gear ring (3) are meshed, a driven wheel (4) is coaxially fixed on the hollow shaft (5), and the driving wheel (6) and the driven wheel (4) are connected through a belt.

3. The dry-wet combined cement kiln desulfurization device according to claim 1, characterized in that the water spray assembly comprises a plurality of downcomers (16) arranged in parallel with the axis of the hollow shaft (5), the downcomers (16) are distributed along the circumferential array of the axis of the hollow shaft (5), a plurality of ammonia water nozzles (13) are fixed on each downcomer (16), the axes of the ammonia water nozzles (13) are arranged perpendicular to the downcomers (16), the ammonia water nozzles (13) extend towards the hollow shaft (5), and the ammonia water nozzles (15) are mounted on the ammonia water nozzles (13).

4. The wet and dry cement kiln desulphurization unit according to claim 1, wherein a cleaning plate (18) cooperating with the filter plate (17) is fixed to the end of the hollow shaft (5) remote from the end cap (2).

5. The dry-wet combined cement kiln desulfurization device according to claim 1, wherein the reaction barrel (1) is provided with a circular receiving groove (10), the receiving groove (10) is communicated with the reaction zone and is flush with the lower end of the filter plate (17), and the receiving groove (10) is provided with a cleaning opening which can be opened and closed.

6. The wet and dry combined cement kiln desulfurization apparatus according to claim 1, wherein said filter plate (17) is of inverted funnel type and the filter plate (17) is disposed coaxially with the hollow shaft (5).

7. The dry-wet combined cement kiln desulfurization device according to claim 1, wherein a plurality of scrapers (19) contacting the inner wall of the reaction barrel (1) are fixed to the water inlet pipe (12), and the plurality of scrapers (19) are all arranged in parallel with the reaction stopping axis.