CN217248007U

CN217248007U - Novel indirect multiple spot feed of sodium bicarbonate device

Info

Publication number: CN217248007U
Application number: CN202220517786.4U
Authority: CN
Inventors: 秦艳梅; 余维豪; 喻宏伟; 陈明华; 王爱武; 傅嘉宾
Original assignee: Zhejiang Yibu Environmental Protection Industry Co ltd
Current assignee: Zhejiang Yibu Environmental Protection Industry Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-08-23
Anticipated expiration: 2032-03-11

Abstract

The utility model discloses a novel indirect multiple spot feeder of sodium bicarbonate, grind machine, propelling movement fan, spiral case formula feed inlet, surge bin, storehouse top sack cleaner, dust remover air exhauster, manual push-pull valve, multiple spot distributing device, pneumatic push-pull valve, quantitative charging machine, lock mechanism of qi, venturi sprayer, compressed air pipe, material level measurement station and fluidizer including sodium bicarbonate. The utility model conveys the ground fine baking soda powder to the buffer bin through the centrifugal fan, the problem that the fine baking soda powder cannot be settled due to the direct feeding of materials can be avoided through the design of the feed inlet of the buffer bin, and meanwhile, the whole air pressure of the system can be balanced through the exhaust fan on the bag-type dust collector; a novel multi-point blanking distributor is arranged at a blanking port of the buffer bin, so that multi-point material distribution can be realized, accurate feeding is realized through a quantitative feeding device, and then the fine sodium bicarbonate powder is conveyed to a material using point by utilizing compressed air and an ejector.

Description

Novel indirect multiple spot feed of sodium bicarbonate device

Technical Field

The utility model relates to a boiler gas cleaning technical field specifically is a novel indirect multiple spot feed of baking soda device.

Background

The main components of the flue gas generated in the incinerator stage of the garbage incineration are dust, hydrogen chloride, sulfur dioxide, carbon dioxide, nitrogen oxide and the like, and a small amount of hydrogen fluoride, dioxin, furan and the like can be generated. The flue gas passes through a waste heat boiler, and enters a flue gas purification system after heat energy is utilized. At present, acid gases (SOx and HCl) are mainly removed by caustic lime, baking soda and other alkaline substances, and the baking soda has higher desulfurization efficiency and is widely used. Generally, a plurality of flue gas purification systems need to be provided with a plurality of baking soda feeding points, the conventional baking soda conveying system is that grinding machines directly convey baking soda to the feeding points after grinding, one feeding point is provided with 1 and two grinding machines, and the grinding machines are expensive, so the investment cost is higher.

The centrifugal fan matched with the grinding machine is used for conveying the baking soda, the baking soda amount required to be added is large aiming at a desulfurization system with small smoke amount and high sulfur content, if the grinded baking soda is directly conveyed to an adding point by the centrifugal fan, the gas consumption is large, the smoke flow is increased, the subsequent smoke treatment equipment model is required to be increased correspondingly, and the cost is increased. Meanwhile, a large amount of cold air enters the system, the temperature of the flue gas is also reduced, and the desulfurization efficiency is influenced.

To sum up, for the characteristics of the existing baking soda feeding system, the disadvantages of the prior art are summarized as follows:

1. one feeding point of the multi-point baking soda direct feeding device needs to be provided with 1 standby grinder, the price of the grinder is high, and the investment cost is high.

2. The investment cost of a material feeding point needing to be provided with a baking soda storage bin and accessory equipment is higher.

3. Aiming at a desulfurization system with small smoke and high sulfur content, the amount of baking soda to be added is large, if the ground baking soda is directly conveyed to an adding point by a centrifugal fan, the gas consumption is large, the smoke flow is increased, the subsequent smoke treatment equipment model also needs to be increased correspondingly, and the cost is increased.

4. A large amount of cold air enters the system, and the temperature of the flue gas is also reduced, so that the desulfurization efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel indirect multiple spot feed of sodium bicarbonate device uses through compressed air and sprayer cooperation and carries the powder, and the air consumption is few, and fine solution small flue gas volume's desulfurization problem has reduced the quantity of grinding the machine simultaneously, has reduced investment cost.

In order to achieve the above object, the utility model provides a following technical scheme: a novel baking soda indirect multi-point feeding device comprises a baking soda grinding machine, a pushing fan, a buffer bin, a multi-point distributing device and a quantitative feeding machine; a pushing fan is arranged on a discharge pipeline of the baking soda grinder and connected with a buffer bin through a pipeline, and a volute type feed port butted with a feed pipeline is arranged on the buffer bin; a discharge port of the buffer bin is provided with a multi-point distributor, and a manual gate valve is arranged between the multi-point distributor and the discharge port of the buffer bin; each discharge port of the multipoint distributor is correspondingly connected with a quantitative feeder through a pipeline, and pneumatic gate valves are installed on the quantitative feeders and the feeding pipelines of the multipoint distributor; the discharge gate of quantitative feeder is equipped with the lock mechanism of qi, and the discharge gate of lock mechanism of qi corresponds connects the venturi sprayer, and compressed air pipe is connected to the air inlet of venturi sprayer, carries sodium bicarbonate farine to the point of use through compressed air pipe.

Preferably, a bin top bag-type dust remover is installed at the top of the buffer bin, a pulse ash cleaning pipeline is arranged on one side of the bin top bag-type dust remover, a dust remover exhaust fan is arranged on the other side of the bin top bag-type dust remover, and the dust remover exhaust fan is connected with an air inlet pipe of the baking soda grinder through a conveying air circulating pipe.

Preferably, the surge bin is further provided with a material level measuring point for detecting the internal material, and the bottom of the lateral lower part of the surge bin is provided with a fluidizing device.

Preferably, the air locking machine is a rotary discharging device, and materials are conveyed to the Venturi ejector through rotation.

Preferably, the volute type feed inlet is a tangential feed inlet of the buffer bin, the buffer bin separates the fine baking soda powder from the airflow through the centrifugal force of the volute type feed inlet and collects the fine baking soda powder on the bin wall, and the fine baking soda powder falls into the bottom of the buffer bin by means of gravity.

Preferably, the material level measuring points are respectively arranged at a high material metering port and a low material metering port of the buffer bin according to the height of the materials in the buffer bin.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the novel baking soda indirect multipoint feeding device is suitable for a dry desulphurization system with a plurality of feeding points of a plurality of systems, reduces the number of grinding machines and reduces the investment.

2. This novel indirect multiple spot feeder of sodium bicarbonate, surge bin feed inlet adopt neotype spiral case formula feeding form, prevent that sodium bicarbonate farine from attaching to the sack cleaner on, cause the dust remover pressure big.

3. This novel indirect multiple spot feeder of sodium bicarbonate will carry the air exhauster series connection of fan and storehouse top dust remover, keeps entire system's atmospheric pressure balanced.

4. This novel indirect multiple spot feeder of sodium bicarbonate, at the novel multiple spot distributing device of surge bin feed opening configuration, make the unloading smooth and easy and even.

5. This novel indirect multiple spot feeder of sodium bicarbonate, the operation is stable, and the energy consumption is low, and area is little, and desulfurization efficiency is high, can solve the interpolation sodium bicarbonate problem of the little flue gas volume that contains the sulphur volume height.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of the surge bin of the present invention.

In the figure: 1. a baking soda mill; 2. a pushing fan; 3. a volute type feed inlet; 4. a buffer bin; 5. a bag-type dust collector at the top of the bin; 6. a dust remover exhaust fan; 7. a manual gate valve; 8. a multi-point distributor; 9. a pneumatic gate valve; 10. a quantitative feeder; 11. locking the air machine; 12. a venturi ejector; 13. a compressed air pipe; 14. a material level measuring point; 15. a fluidizing device; 16. a pulse ash removal pipeline; 17. a conveying air circulating pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a novel baking soda indirect multi-point feeding device comprises a baking soda grinder 1, a pushing fan 2, a buffer bin 4, a multi-point distributor 8 and a quantitative feeder 10; a pushing fan 2 is arranged on a discharge pipeline of the baking soda grinder 1, the pushing fan 2 is connected with a buffer bin 4 through a pipeline, a volute type feed port 3 butted with the feed pipeline is arranged on the buffer bin 4, the baking soda grinder 1 grinds baking soda to 20-micron fine powder, the pushing fan 2 is a centrifugal fan and can convey the ground baking soda fine powder to the volute type feed port 3, and the air volume and the air pressure of the pushing fan are designed according to the model of the grinder; a discharge port of the buffer bin 4 is provided with a multi-point distributing device 8, a manual gate valve 7 is arranged between the multi-point distributing device 8 and the discharge port of the buffer bin 4, and the distributing quantity of the multi-point distributing device 8 can be designed according to requirements; each discharge port of the multipoint distributing device 8 is correspondingly connected with a quantitative feeder 10 through a pipeline, a pneumatic gate valve 9 is arranged on the quantitative feeder 10 and the feeding pipeline of the multipoint distributing device 8, the discharging can be automatically controlled to the quantitative feeder 10 according to the requirement, and the quantitative feeder 10 is provided with a weighing device, so that the discharging amount can be accurately measured; the discharge gate of quantitative charging machine 10 is equipped with lock mechanism of qi 11, and the discharge gate of lock mechanism of qi 11 corresponds connects venturi sprayer 12, and compressed air pipe 13 is connected to the air inlet of venturi sprayer 12, carries baking soda fine powder to the point of use through compressed air pipe 13.

In the embodiment, the top of the buffer bin 4 is provided with the bin top bag-type dust remover 5, one side of the bin top bag-type dust remover 5 is provided with the pulse ash removal pipeline 16, the other side of the bin top bag-type dust remover 5 is provided with the dust remover exhaust fan 6, and the dust remover exhaust fan 6 is connected with the air inlet pipe of the baking soda grinder 1 through the conveying air circulating pipe 17; the buffer bin 4 is also provided with a material level measuring point 14 for detecting internal materials, the bottom of the lateral lower part of the buffer bin 4 is provided with a fluidizing device 15, in order to prevent baking soda dry powder in the buffer bin 4 from hardening and being incapable of discharging, the fluidizing device 15 is configured to carry out hammering arch breaking on a bin bottom cone hopper at regular time, wherein the fluidizing device 15 can be a vibration beater or other arch breaking and vibrating devices.

The novel baking soda indirect multipoint feeding device in the embodiment can design a baking soda grinding machine 1, a buffer bin 4, a bin top bag-type dust collector 5, a metering feeding device and a dry powder conveying device which are suitable for the model according to the usage amount of different baking soda, and can meet the usage amount requirement of baking soda fine powder by adjusting the feeding amount of the metering feeding device; in the process of feeding the fine baking soda powder, the exhaust fan 6 of the dust remover is simultaneously started, the gas is conveyed to the air inlet pipe of the baking soda grinding machine 1 through the conveying air circulating pipe 17 and then enters the pushing and feeding machine 2 for conveying the fine baking soda powder, so that the air pressure balance of the whole system is guaranteed; the bin top bag-type dust collector 5 can effectively intercept 99.9% of tiny dust, and the pulse ash removal pipeline 16 matched with the bin top bag-type dust collector 5 can timely remove ash from the bag of the bin top bag-type dust collector 5, so that the differential pressure of the bin top bag-type dust collector 5 is reduced.

In the above embodiment, the air locking machine 11 is a rotary discharging device, and the material is conveyed to the venturi ejector 12 through rotation, so that the air locking machine 11 can effectively prevent the phenomenon of unsmooth discharging caused by reverse connection of compressed air.

In the embodiment, the volute type feed inlet 3 is a tangential feed inlet of the buffer bin 4, fine baking soda powder enters from the volute type feed inlet 3, the fine baking soda powder can be separated from air flow by means of centrifugal force and collected on the bin wall, and then the fine powder falls into the bottom of the buffer bin 4 by means of gravity, so that the unique feeding mode effectively prevents fine baking soda powder from being attached to the bin top bag-type dust collector 5 at the upper part, and the material level measuring points 14 are respectively arranged at a high-level material metering port and a low-level material metering port of the buffer bin 4 according to the height of materials in the buffer bin 4; the material level measuring point 14 is used for detecting the material level of the buffer bin 4, when the material level is low, the baking soda grinder 1 and the pushing fan 2 start to work, and when the material level is high, the baking soda grinder 1 and the pushing fan 2 stop working.

The working principle is as follows: the novel indirect multi-point baking soda feeding device can effectively collect the fine powder of the baking soda after grinding, and the air pressure of the whole system is kept stable through the recycling of the conveying air, the fine baking soda powder after grinding is conveyed to a buffer bin 4 through a pushing fan 2, a feed inlet of the buffer bin 4 is designed into a feeding form of a volute type feed inlet 3, so that the fine baking soda powder airflow makes rotary motion, the fine baking soda powder is separated from the airflow and collected on the bin wall by virtue of centrifugal force, and the fine baking soda powder falls into the buffer bin 4 by virtue of the action of gravity, so that the problem that the fine baking soda powder cannot be settled due to direct feeding can be avoided, meanwhile, the upper part of the buffer bin 4 is provided with a bin top bag-type dust remover 5, and the bin top bag-type dust remover 5 pumps away the conveying air of the fine baking soda powder through a dust remover exhaust fan 6 and sends the conveying air to an air inlet pipe of the baking soda grinding machine 1, so that the whole air pressure of the system is balanced; the novel multi-point distributing device 8 is installed at the feed opening of the buffer bin 4, multi-point distribution can be carried out evenly, accurate feeding is carried out through the quantitative feeder 10, and then the fine sodium bicarbonate powder is conveyed to a material using point through the Venturi ejector 12 and the compressed air pipe 13.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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.

Claims

1. A novel baking soda indirect multi-point feeding device comprises a baking soda grinding machine (1), a pushing fan (2), a buffer bin (4), a multi-point distributor (8) and a quantitative feeder (10); the method is characterized in that: a discharge pipeline of the baking soda grinder (1) is provided with a pushing fan (2), the pushing fan (2) is connected with a buffer bin (4) through a pipeline, and the buffer bin (4) is provided with a volute type feed inlet (3) butted with the feed pipeline; a discharge hole of the buffer bin (4) is provided with a multi-point distributor (8), and a manual gate valve (7) is arranged between the multi-point distributor (8) and the discharge hole of the buffer bin (4); each discharge hole of the multipoint distributing device (8) is correspondingly connected with a quantitative feeder (10) through a pipeline, and pneumatic gate valves (9) are arranged on the quantitative feeder (10) and the feeding pipelines of the multipoint distributing device (8); the discharge gate of quantitative feeder (10) is equipped with lock gas machine (11), and the discharge gate of lock gas machine (11) corresponds connects venturi sprayer (12), and compressed air pipe (13) are connected to the air inlet of venturi sprayer (12), carry baking soda fine powder to the point of use through compressed air pipe (13).

2. The novel indirect baking soda multipoint feeding device as claimed in claim 1, characterized in that: the top of the buffer bin (4) is provided with a bin top bag-type dust remover (5), one side of the bin top bag-type dust remover (5) is provided with a pulse ash removal pipeline (16), the other side of the bin top bag-type dust remover (5) is provided with a dust remover exhaust fan (6), and the dust remover exhaust fan (6) is connected with an air inlet pipe of the baking soda grinding machine (1) through a conveying air circulating pipe (17).

3. The novel indirect baking soda multipoint feeding device as claimed in claim 1, characterized in that: the buffer bin (4) is also provided with a material level measuring point (14) for detecting internal materials, and the bottom of the lateral lower part of the buffer bin (4) is provided with a fluidizing device (15).

4. The novel indirect baking soda multipoint feeding device as claimed in claim 1, characterized in that: the air locking machine (11) is a rotary discharging device and sends materials to the Venturi ejector (12) through rotation.

5. The indirect multi-point feeding device for baking soda as claimed in claim 1, wherein: the volute type feed inlet (3) is a tangential feed inlet of the buffer bin (4), the buffer bin (4) separates the fine baking soda powder from the airflow through the centrifugal force of the volute type feed inlet (3) and collects the fine baking soda powder on the bin wall, and the fine baking soda powder falls into the bottom of the buffer bin (4) by means of gravity.

6. The novel indirect baking soda multipoint feeding device as claimed in claim 3, characterized in that: the material level measuring point (14) is respectively arranged at a high material metering opening and a low material metering opening of the buffer bin (4) according to the height of the material in the buffer bin (4).