CN210584113U

CN210584113U - Main dust remover of lime kiln

Info

Publication number: CN210584113U
Application number: CN201920997655.9U
Authority: CN
Inventors: 李新波; 孙德元; 张镇; 林世玺; 马涛; 贺学坤; 赵猛
Original assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Current assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-05-22
Anticipated expiration: 2029-06-29

Abstract

The utility model discloses a main dust collector of a lime kiln, which comprises a bag-type dust collector and a nitrogen injection pipe arranged on the bag-type dust collector, wherein the nitrogen injection pipe is a short-distance pipe; the nitrogen blowing pipe is connected to a nitrogen supply source on the side of the bag-type dust collector; the output end of the nitrogen blowing pipe is provided with a blowing head; the blowing head is of a T-shaped structure, and a blowing narrow slit is arranged at the front end of the blowing head; the nitrogen gas supply source is a variable-frequency type gas supply source; the nitrogen gas supply source is electrically connected to the controller through a frequency converter. The main dust remover of the lime kiln reduces the distance between the blowing pipeline and the dust removing cloth bag, and the blowing effect is obviously improved; the blowing width is reduced, so that the blowing pressure is increased; the blowing frequency is reduced, and nitrogen is saved; the dust removal differential pressure is reduced, and the service life of the dust removal cloth bag is prolonged.

Description

Main dust remover of lime kiln

Technical Field

The utility model relates to a dust remover, concretely relates to lime kiln owner dust remover belongs to dust remover technical field.

Background

The lime kiln is equipment for processing limestone, and the technological process is as follows: lime stone and fuel are put into a lime kiln (if gas fuel is sent in through a pipeline and a burner) for preheating, then decomposition is started when the temperature reaches 850 ℃, calcination is completed when the temperature reaches 1200 ℃, and then the lime stone and the fuel are discharged out of the kiln after cooling, thus completing the production of quick lime products; different kiln shapes have different preheating, calcining, cooling and ash discharging modes; however, the process principle is the same: the quality of the raw materials is high, and the quality of the lime is good; the fuel has high heat value and low quantity consumption; limestone particle size is in direct proportion to calcination time; the quicklime activity, the calcination time and the calcination temperature are in inverse proportion; the lime kiln mainly comprises a kiln body, a feeding device, a distributing device, a combustion device, an ash discharging device, an electric appliance, an instrument control device, a dust removal device and the like; the lime kilns in different forms have different structural forms and calcining forms, the technological processes are basically the same, and a main dust remover of the lime kiln is generally provided with a cloth bag for dust removal; the distance between a water spraying pipeline and a dust removing cloth bag of the existing cloth bag dust removal is large, so that the spraying effect is poor; the blowing frequency is high, so that the consumption of nitrogen is high; the blowing width is large, resulting in a small blowing pressure.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned problem, the utility model provides a lime kiln owner dust remover, it obviously promotes not to spray the effect, and nitrogen gas consumption reduces to 70m year/t by 150 m.

The main dust remover of the lime kiln comprises a bag-type dust remover and a nitrogen injection pipe arranged on the bag-type dust remover, wherein the nitrogen injection pipe is a short-distance pipe; the nitrogen blowing pipe is connected to a nitrogen supply source on the side of the bag-type dust collector; the output end of the nitrogen blowing pipe is provided with a blowing head; the blowing head is of a T-shaped structure, and a blowing narrow slit is arranged at the front end of the blowing head; the nitrogen gas supply source is a variable-frequency type gas supply source; the frequency converter of the nitrogen gas supply source is electrically connected to the controller; the controller mainly controls the frequency converter to carry out switching at a preset frequency, belongs to the prior art in the aspect of frequency converter control, and does not detail the specific circuit structure and the working principle; when the improvement is carried out, the distance between the blowing pipeline and the dust removal cloth bag is changed, the distance is gradually changed on the premise of not influencing the service life of the dust removal cloth bag, and the blowing effect is obviously improved; then adjusting the blowing width to increase the blowing pressure and further improve the blowing effect; and the blowing frequency is adjusted, so that the aim of reducing the consumption of nitrogen is fulfilled.

In a preferred embodiment, the nitrogen injection pipe is connected to the nitrogen gas supply source through a pipe fitting, and different pipe fittings are selected according to field installation requirements to achieve nitrogen injection pressure control.

In a preferred embodiment, the elongated pipe is flanged to a nitrogen injection pipe and a nitrogen gas supply source.

As a preferred embodiment, the controller is a PLC or a time relay.

Compared with the prior art, the main dust remover of the lime kiln reduces the distance between the blowing pipeline and the dust removing cloth bag, and obviously improves the blowing effect; the blowing width is reduced, so that the blowing pressure is increased; the blowing frequency is reduced, and nitrogen is saved; the dust removal differential pressure is reduced, and the service life of the dust removal cloth bag is prolonged.

Drawings

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

Fig. 2 is a schematic structural view of the blowing head of the present invention.

Fig. 3 is a schematic view of the installation structure of the nitrogen blowing pipe and the blowing head of the present invention.

Fig. 4 is a schematic view of the overall structure of embodiment 2 of the present invention.

Detailed Description

Example 1:

the main dust remover of the lime kiln shown in fig. 1 to 3 comprises a bag-type dust remover 1 and a nitrogen injection pipe 2 arranged on the bag-type dust remover, wherein the nitrogen injection pipe 2 is a short-distance pipe; the nitrogen blowing pipe 2 is connected to a nitrogen supply source 3 on the side of the bag-type dust collector; the output end of the nitrogen blowing pipe 2 is provided with a blowing head 4; the blowing head 4 is of a T-shaped structure, and a blowing narrow slit 5 is arranged at the front end of the blowing head; the nitrogen gas supply source 3 is a variable-frequency type gas supply source; the nitrogen gas supply source 3 is electrically connected with a frequency converter to a controller; the controller mainly controls the frequency converter to carry out switching at a preset frequency, belongs to the prior art in the aspect of frequency converter control, and does not detail the specific circuit structure and the working principle; when the improvement is carried out, the distance between the blowing pipeline and the dust removal cloth bag is changed, the distance is gradually changed on the premise of not influencing the service life of the dust removal cloth bag, and the blowing effect is obviously improved; then adjusting the blowing width to increase the blowing pressure and further improve the blowing effect; and the blowing frequency is adjusted, so that the aim of reducing the consumption of nitrogen is fulfilled.

As shown in fig. 4, the nitrogen injection pipe 2 is connected to the nitrogen gas supply source 3 through a pipe 6, and different pipe arrangements are selected according to field installation requirements to achieve nitrogen injection pressure control; the pipe 6 is flanged to a nitrogen injection lance and a nitrogen gas supply source.

Wherein, the controller is a PLC or a time relay.

The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a lime kiln main dust remover, includes the sack cleaner, and installs the nitrogen gas jetting pipe on the sack cleaner, its characterized in that: the nitrogen blowing pipe is a short-distance blowing pipe; the nitrogen blowing pipe is connected to a nitrogen supply source on the side of the bag-type dust collector; the output end of the nitrogen blowing pipe is provided with a blowing head; the blowing head is of a T-shaped structure, and a blowing narrow slit is arranged at the front end of the blowing head; the nitrogen gas supply source is a variable-frequency type gas supply source; the nitrogen gas supply source is electrically connected to the controller through a frequency converter.

2. The main dust remover of the lime kiln as claimed in claim 1, wherein: the nitrogen gas injection pipe is connected to a nitrogen gas supply source through a pipe.

3. The main dust remover of the lime kiln as claimed in claim 2, wherein: the pipe is connected to a nitrogen injection pipe and a nitrogen gas supply source through flanges.

4. The main dust remover of the lime kiln as claimed in claim 1, wherein: the controller is a PLC or a time relay.