Semi-dry desulfurization circulating ash humidifying device

Abstract

The utility model relates to a semi-dry desulfurization circulating ash humidifying device, which solves the technical problems of non-uniform humidification, easy blockage and wall plate hardening of the existing humidifier, and is provided with a rack, a shell is arranged on the rack, a feed port is arranged on the shell, a discharge port is arranged on the rack, a water adding nozzle is arranged at the middle section of the upper part of the shell, and a water outlet is arranged on the lower part of the shell. A quick-opening door is further arranged on the upper portion of the shell, a mixing and stirring shaft is arranged in the machine frame, the mixing and stirring shaft is connected with a bearing set fixed to the machine frame, the mixing and stirring shaft is further connected with a driving device, a flexible damping device is arranged at the bottom of the machine frame, and a vibrating motor is arranged on the machine frame. The semi-dry desulfurization circulating ash humidifying device can be widely applied to semi-dry desulfurization circulating ash humidifying.

Description

Technical Field

[0001] The utility model relates to the field of flue gas treatment, in particular to a semi-dry desulfurization circulating ash humidifying device. Background Art

[0002] There are two ways to humidify the semi-dry desulfurizer, one is humidification inside the desulfurization tower, and the other is humidification outside the desulfurization tower. Humidification inside the desulfurization tower is to spray water into the tower, and complete the mixed humidification of water and desulfurizer in the desulfurization tower. This method can easily cause problems such as desulfurization tower wall plate blockage. Humidification outside the tower is to humidify the desulfurizer outside the desulfurization tower, avoiding the problem of desulfurization tower wall plate agglomeration and uneven mixing of desulfurization ash and water. Therefore, humidification outside the desulfurization tower must have a humidifier that can realize the humidification function. At present, there are few humidification devices dedicated to semi-dry desulfurization ash. Generally, humidifiers from other industries such as steel mills and cement plants are used, which will cause uneven humidification and blockage, resulting in reduced desulfurization efficiency and paralysis.

[0003] At present, there is an urgent need for a device for humidifying the desulfurization circulating ash in semi-dry desulfurization, which can be suitable for the working conditions of semi-dry desulfurization ash humidification and can also solve the problems of uneven humidification and blockage in the existing semi-dry desulfurization circulating ash humidification operation. Summary of the invention

[0004] In order to solve the technical problems of uneven humidification, easy clogging and wall plate compaction of existing humidifiers, the utility model provides a semi-dry desulfurization circulating ash humidifying device which can not only transport desulfurization circulating ash, but also synchronously humidify the circulating ash to secondary improve the activity of the desulfurization ash and improve the desulfurization efficiency.

[0005] The utility model provides a semi-dry desulfurization circulating ash humidifying device, which is provided with a frame, a shell is provided on the frame, a feed port is provided on the shell, a discharge port is provided on the frame, a water adding nozzle is provided in the middle section of the upper part of the shell, a quick-opening door is also provided on the upper part of the shell, a mixing and stirring shaft is provided inside the frame, the mixing and stirring shaft is connected to a bearing group fixed on the frame, the mixing and stirring shaft is also connected to a driving device, a flexible shock absorbing device is provided at the bottom of the frame, and a vibrating motor is provided on the frame.

[0006] Preferably, the mixing and stirring shaft is provided with a feeding section, a humidifying section, a mixing section and a discharging section in sequence from the feed port to the discharge port, and the blade forms of the humidifying section and the mixing section are different from those of the feeding section and the discharging section.

[0007] Preferably, the water adding nozzle is provided with two pieces and is arranged above the humidifying section of the mixing and stirring shaft, and the water adding nozzle adopts a dual-fluid structure.

[0008] Preferably, the lower half of the shell is a U-shaped arc structure, and the shell height in the feeding section is 200-500 mm lower than that in the humidifying section, the mixing section and the discharging section.

[0009] Preferably, the blades of the feeding section and the discharging section are spiral blade structures, the blades of the humidifying section are paddle blades with holes, and the blades of the mixing section are paddle blades.

[0010] Preferably, two adjacent blades of the mixing section are laterally fixedly connected with a flat steel or an angle steel.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model adopts a mode combining "single-axis conveying and multi-stage mixing", and combines high-frequency vibration of the cylinder and automatic water addition to achieve full mixing of desulfurization ash and water, solving the problems of uneven humidification and clogging of existing semi-dry humidifiers.

[0013] The whole set of equipment is installed on a frame. According to the desulfurization ash humidification process, the slurry structure of each stage of the stirring shaft is redesigned. The humidifier mixing and stirring shaft is composed of a feeding section, a humidification section, a mixing section, and a discharging section. The blade structure of each stage is different. In addition, the vibration system is equipped with an electric control and water control system, which can better adapt to the entire process of desulfurization ash humidification. The whole is fixed on a box bracket. When the bracket is installed, a flexible shock-absorbing device is installed at the bottom, so that during the operation of the whole machine, the cylinder vibrates at a high frequency, and a certain gap is always maintained between the cylinder wall and the stirring shaft, which reduces the operating resistance, does not cause the machine to be stuck, and does not cause the phenomenon of lagging, reduces the downtime for cleaning, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 A top view of

[0016] Figure 3 It is a structural diagram of the mixing and stirring shaft of the utility model.

[0017] Description of the accompanying symbols:

[0018] 1. Frame; 2. Motor reducer; 3. Coupling; 4. Coupling guard; 5. Front bearing assembly; 6. Front seal; 7. Feed inlet; 8. Humidifier housing; 9. Mixing shaft; 10. Water adding nozzle; 11. Quick opening door; 12. Vibrating motor; 13. Rear seal; 14. Rear bearing assembly; 15. Discharge port; 16. Mixing shaft feeding section; 17. Mixing shaft humidification section; 18. Mixing shaft mixing section; 19. Mixing shaft discharge section. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can easily implement the present invention.

[0020] Example 1: Figure 1-2 As shown, the utility model is fixed on the frame 1 as a whole, and the mixing shaft 9 is installed inside the humidifier housing 8; the mixing shaft 9 is connected to the motor reducer 2 by a coupling 3, and a coupling shield 4 is installed on the upper part of the coupling 3.

[0021] The front and rear ends of the mixing shaft 9 are provided with a front bearing group 5 and a rear bearing group 14, and the front and rear seals with the housing are sealed with a front seal 6 and a rear seal 13 respectively, and the sealing form is a packing seal, and the packing is a wool felt + butter seal.

[0022] The lower half of the humidifier housing 8 is an arc-shaped U-shaped structure. The "U"-shaped structure can be closely combined with the stirring shaft to avoid material storage at the bottom of the housing. The upper part is equipped with a water nozzle 10, a quick-opening door 11, and a vibrating motor 12. The water nozzle 10 adopts a double-fluid structure, and a total of two parts are set. The housing feeding section is 200-500mm lower than the housing height of the humidification section, mixing section and discharge section to avoid the nozzle and material structure from causing hardening.

[0023] When the frame 1 is installed, a flexible shock-absorbing device is installed at the bottom, so that during the operation of the whole machine, the cylinder vibrates at a high frequency, and a certain gap is always maintained between the cylinder wall and the stirring shaft, which reduces the operation resistance, does not cause the machine to freeze or run wild, reduces the downtime for cleaning, and improves the work efficiency.

[0024] like Figure 3 As shown, the mixing shaft 9 is composed of a mixing shaft feeding section 16, a mixing shaft humidifying section 17, a mixing shaft mixing section 18 and a mixing shaft discharging section 19 in sequence.

[0025] The blades of the mixing shaft feeding section 16 adopt a spiral blade structure and are installed at the bottom of the feed inlet 7 , which uniformly transports the desulfurization circulating ash coming down from the feed inlet 7 forward to the mixing shaft humidification section 17 .

[0026] The blades of the mixing and stirring shaft humidification section 17 are in the form of perforated paddle blades. Holes are opened on the slurry sheet to slow down the material conveying speed while also playing a better stirring role. It can not only convey desulfurized ash but also mix water and desulfurized ash. A water adding nozzle 10 is installed on the upper humidifier housing 8 to humidify the desulfurized ash passing through this section. The water adding nozzle 10 uses a double-fluid spray gun to atomize water with compressed air. Gas and liquid enter the nozzle at the same time. The nozzle has a good atomization effect and the amount of water spray can be automatically controlled. The desulfurized ash achieves preliminary surface humidification in this section.

[0027] The blades of the mixing section 18 of the mixing and stirring shaft adopt the structure of paddle blades to achieve a more complete mixing of the desulfurized ash and water. In order to avoid uneven distribution and sticking to the wall panels, two adjacent slurries are connected by flat steel or angle steel to effectively prevent the casing and the wall panels from hardening, thus preventing the desulfurized ash from sticking to the shell. The conveying speed of the desulfurized ash in the mixing section 18 of the mixing and stirring shaft is slowed down, and the desulfurized ash and water are continuously stirred by the paddle blade structure so that they can be fully mixed and evenly mixed.

[0028] The blades of the discharging section 19 of the mixing and stirring shaft adopt a spiral blade structure, and the desulfurized ash after mixing and humidification is discharged from the discharging port 15.

[0029] The utility model adopts the mode of "combining single-axis conveying with multi-stage mixing", and combines high-frequency vibration of the cylinder and automatic water addition to achieve full mixing of desulfurization ash and water, thereby realizing secondary humidification of desulfurization ash in semi-dry desulfurization and improving activity.

[0030] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the scope of the claims of the utility model shall be within the scope of protection of the utility model.

Claims

1. A semi-dry desulfurization circulating ash humidifying device, which is provided with a frame, a shell is provided on the frame, a feed port is provided on the shell, a discharge port is provided on the frame, a water adding nozzle is provided in the middle section of the upper part of the shell, a quick-opening door is also provided on the upper part of the shell, a mixing and stirring shaft is provided inside the frame, the mixing and stirring shaft is connected to a bearing group fixed on the frame, and the mixing and stirring shaft is also connected to a driving device, wherein the mixing and stirring shaft is characterized in that: A flexible shock absorbing device is provided at the bottom of the frame, and a vibrating motor is provided on the frame; the mixing and stirring shaft is provided with a feeding section, a humidifying section, a mixing section and a discharging section in sequence from the feed port to the discharge port, the blades of the feeding section and the discharging section are spiral blade structures, the blades of the humidifying section are paddle blades with holes, and the blades of the mixing section are paddle blades.

2. The semi-dry desulfurization circulating ash humidification device according to claim 1 is characterized in that: The water adding nozzle is provided with two pieces and arranged above the humidifying section of the mixing and stirring shaft, and the water adding nozzle adopts a double fluid structure.

3. The semi-dry desulfurization circulating ash humidification device according to claim 1 is characterized in that: The lower half of the shell is a U-shaped arc structure, and the shell in the feeding section is 200-500mm lower than the shell height of the humidifying section, the mixing section and the discharging section.

4. The semi-dry desulfurization circulating ash humidification device according to claim 1 is characterized in that: Two adjacent blades of the mixing section are laterally fixedly connected with a flat steel or an angle steel.

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