CN219586048U

CN219586048U - Solid waste heat decomposition slag discharging system

Info

Publication number: CN219586048U
Application number: CN202321384517.6U
Authority: CN
Inventors: 刘延栋; 王华通; 程鹏
Original assignee: Shandong Qingbo Ecological Material Integration Utilization Co ltd
Current assignee: Shandong Qingbo Ecological Material Integration Utilization Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-25
Anticipated expiration: 2033-05-31

Abstract

The utility model belongs to the technical field of solid waste pyrolysis treatment equipment, and particularly relates to a solid waste pyrolysis slag discharging system which comprises a pyrolysis furnace, a cooler, a screening machine, a gas collecting hood, a dust remover and an induced draft fan which are connected in sequence; the top of screening machine and the top of discharge gate all set up the gas collecting channel, and the bottom discharge gate of screening machine and the tip discharge gate below of screening machine all set up collection device, and this system realizes low temperature, dustless slag tap, has reduced safety risk, the environmental protection risk that causes because of the slag tap, and sieves the slag charge, is favorable to the utilization and the processing of follow-up slag charge, easy operation has improved holistic slag tap efficiency greatly.

Description

Solid waste heat decomposition slag discharging system

Technical Field

The utility model belongs to the technical field of solid waste pyrolysis treatment equipment, and particularly relates to a solid waste pyrolysis slag discharging system.

Background

Along with the continuous development of the solid waste pyrolysis technology, the number and the volume of the solid waste pyrolysis technology are continuously increased, but in the pyrolysis process, a feeding device is very perfect, and the feeding material is basically wet, so that the feeding requirements can be met by adopting spiral feeding, push rod feeding and the like, and the site environment is basically dust-free. In contrast, the material is subjected to pyrolysis, the middle part of the material is carbonized, and a large amount of dust is easily generated, wherein the most representative material is: the sludge, the waste salt, the waste activated carbon, the waste tires and the like are not only powder, so that the problem of dust emission is difficult to solve by adopting single pneumatic conveying and the like, and in the discharging process, in order to save the time of slag discharging, slag discharging materials are generally at about 50 ℃, the risk of scalding is also easy to be caused if slag is directly discharged, the production efficiency is low, and the products are mixed and are not easy to be processed or utilized later.

Therefore, how to scientifically and rapidly finish slag tapping is a great problem facing the whole pyrolysis industry.

Disclosure of Invention

The utility model provides a solid waste heat decomposition slag discharging system, which solves the problems of site dust raising, scalding risk, product mixing, low production efficiency and the like in the current solid waste heat decomposition slag discharging process, realizes low-temperature and dust-free slag discharging, reduces the safety risk and environmental protection risk caused by slag discharging, screens slag, is beneficial to the subsequent utilization and treatment of the slag, and is simple to operate.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a solid waste heat pyrolysis slag discharging system comprises a pyrolysis furnace, a cooler, a screening machine, a gas collecting hood, a dust remover and an induced draft fan which are connected in sequence; the top of screening machine and the top of discharge gate all set up the gas collecting channel, and the bottom discharge gate of screening machine and the tip discharge gate below of screening machine all set up collection device.

Preferably, the cooler is a water-cooled screw conveyor. The water-cooling screw conveyor is not only a discharging device, but also a cooling device, and can cool high-temperature materials to normal temperature, so that thermal damage to subsequent devices is avoided, and safety risks such as scalding are avoided. The water-cooling screw conveyor adopts an external jacket circulating water cooling mode.

Further preferably, the water inlet of the water-cooling screw conveyor is connected with the water outlet of the water cooling tower, and the water outlet of the water-cooling screw conveyor is connected with the water inlet of the water cooling tower.

Preferably, the dust remover comprises a primary dust remover and a secondary dust remover, and the gas collecting hood is sequentially connected with the primary dust remover, the secondary dust remover and the induced draft fan.

Further preferably, the primary dust remover is a cyclone dust remover, and the secondary dust remover is a cloth bag dust remover. The cyclone dust collector is the first step of dust removal, and can catch and remove the dust with the particle size of more than 5 mu m, and the caught and removed product is recycled; the cloth bag dust collector is a secondary dust collecting device, dust in the range of 0.1-5 mu m can be collected and removed, and the collected and removed product is recycled.

Preferably, the induced draft fan is connected with a chimney, and the chimney is a flue gas emission device.

Preferably, the screening machine is a drum screening machine, and is mainly used for separating granular materials from powder materials, different pore diameter screen plates can be replaced according to the particle size of the materials, and the granular materials and the powder materials are discharged through different outlets, so that the mixing of products is reduced, and the subsequent treatment or utilization is more facilitated.

Preferably, a lifting machine is arranged between the cooler and the screening machine, is a material lifting device and is mainly used for lifting water-cooled spiral discharged materials to the roller screening machine.

In the utility model, solid waste is subjected to pyrolysis in a pyrolysis furnace and then is discharged, the slag is cooled by a water-cooling conveyor and is conveyed to a lifting machine, the slag is conveyed to a drum screening machine through the lifting machine, the slag is screened, the screened material is respectively collected into a collecting device through a discharge hole at the bottom and a discharge hole at the end, a gas collecting hood is a dust absorbing device and is distributed at the upper part and each outlet of the drum screening machine, the dust is ensured to be fully recovered and not leaked into the environment, the absorbed dust is subjected to multi-stage dust removal by a primary dust remover and a secondary dust remover, and an induced draft fan is used as an induced draft power provider to discharge gas after two-stage dust removal.

Compared with the prior art, the utility model has the beneficial effects that:

the solid waste heat decomposition slag discharging system provided by the utility model realizes low-temperature and dust-free slag discharging, reduces the safety risk and environmental protection risk caused by slag discharging, screens slag, is beneficial to the utilization and treatment of subsequent slag, is simple to operate, greatly improves the overall slag discharging efficiency, is simple to operate, and provides a direction for the stabilization, safety and environmental protection operation of the solid waste heat decomposition device.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

in the figure, 1 is a pyrolysis furnace, 2 is a cooler, 3 is a lifting machine, 4 is a screening machine, 5 is a gas collecting hood, 6 is a primary dust remover, 7 is a secondary dust remover, 8 is a draught fan, 9 is a chimney, 10 is a cooling tower, and 11 is a collecting device.

Detailed Description

The following detailed description of the present utility model is provided by way of example only, and is not to be construed as limiting the scope of the utility model.

As shown in fig. 1, a solid waste heat pyrolysis slag discharging process and a solid waste heat pyrolysis slag discharging system comprise a pyrolysis furnace 1, a cooler 2, a lifting machine 3, a screening machine 4, a gas collecting hood 5, a dust remover, an induced draft fan 8 and a chimney 9 which are sequentially connected, wherein the induced draft fan 8 is an induced draft power provider, and a chimney 9 fume emission device; the top of the screening machine 4 and the top of the discharge hole are provided with gas collecting hoods 5, the bottom discharge hole of the screening machine 4 and the lower part of the discharge hole at the end part of the screening machine 4 are provided with collecting devices 11, the gas collecting hoods 5 are distributed at the top part of the drum screening machine 4 and the discharge holes, the dust is guaranteed to be fully recovered, the dust cannot leak into the environment, and the environment is prevented from being polluted; the cooler 2 is a water-cooling screw conveyor which is a discharging device and a cooling device, so that high-temperature materials can be cooled to normal temperature, thermal damage to subsequent devices is avoided, safety risks such as scalding are avoided, and cooled slag is conveyed to the lifting machine 3; the dust collector comprises a primary dust collector 6 and a secondary dust collector 7, the gas-collecting hood 5 is sequentially connected with the primary dust collector 6, the secondary dust collector 7 and the induced draft fan 8, the primary dust collector 6 is a cyclone dust collector, the secondary dust collector 7 is a cloth bag dust collector, the cyclone dust collector is the first step of dust removal, and dust with the diameter of more than 5 mu m can be captured and removed; the cloth bag dust collector is a secondary dust collecting device, can collect and remove dust within the range of 0.1-5 mu m, has better dust removing effect and avoids pollution compared with the prior art that only one dust collector is used; the screening machine 4 is a roller screening machine and is mainly used for separating granular materials from powder materials, different pore diameter screen plates can be replaced according to the particle size of the materials, and the granular materials and the powder materials are discharged through different discharge ports, so that the mixing of products is reduced, and the subsequent treatment or utilization is more facilitated.

In another embodiment, the water-cooled screw conveyor adopts an external jacket circulating water cooling mode, and can also adopt water-cooled conveyors with other cooling modes in the prior art. The water inlet of the water-cooling screw conveyor is connected with the water outlet of the water cooling tower 10, and the water outlet of the water-cooling screw conveyor is connected with the water inlet of the water cooling tower 10.

In another embodiment, the collecting device 11 is a ton bag.

In the utility model, solid waste is discharged after pyrolysis in a pyrolysis furnace 1, the slag is cooled by a water-cooling conveyor and is sent to a lifting machine 3, water-cooling spiral discharged materials are lifted to a roller screening machine 4 by the lifting machine 3, the slag is screened, the screened materials are respectively collected into a collecting device 11 through a discharge hole at the bottom and a discharge hole at the end, a gas collecting hood 5 is a dust absorbing device and is distributed at the top part and each discharge hole of the roller screening machine 4, the dust is ensured to be fully recovered and cannot leak into the environment, the absorbed dust is subjected to multi-stage dust removal by a primary dust remover 6 and a secondary dust remover 7, and a draught fan 8 is used as an induced air power provider to discharge gas after two-stage dust removal.

The main flow of the utility model is as follows: solid waste is after pyrolysis furnace 1 reaction is accomplished, the material is carried out the continuous slag tap through the internal screw of water-cooling screw conveyer, the water-cooling screw conveyer is cooled down to the material, the thermal damage to subsequent device has been reduced, the while has avoided the material to collect to behind the ton package, the phenomenon of "burn ton package" appears, then the material falls into in the lifting machine 3, promote to drum screening machine 4 import through lifting machine 3, the material is through screening in drum screening machine 4, wherein the powdered material falls into the below discharge gate, then through ton package splendid attire storage, granular material falls into ton package along with the rotation of cylinder afterbody and stores, can produce a large amount of dust at screening and blanking's in-process, get into cyclone dust collector after collecting through gas collecting hood 5 top and tip (afterbody) discharge gate top all, after preliminary dust collector carries out the dust collector, get into the sack cleaner and carry out secondary dust collector, the flue gas that reaches the standard after twice dust collector passes through chimney 9 high altitude emission, behind cyclone dust collector and the dust collector entrapment material collection, according to the circumstances of dust collector, recycle dust 1 or return to pyrolysis dust, retrieve the dust.

The solid waste pyrolysis slag discharging system provided by the utility model can be suitable for treating solid waste pyrolysis such as oil sludge, waste salt, waste activated carbon, waste tires and the like.

Claims

1. The solid waste heat pyrolysis slag discharging system is characterized by comprising a pyrolysis furnace (1), a cooler (2), a screening machine (4), a gas collecting hood (5), a dust remover and an induced draft fan (8) which are connected in sequence; the top of screening machine (4) and the top of discharge gate all set up gas collecting channel (5), and the bottom discharge gate of screening machine (4) and the tip discharge gate below of screening machine (4) all set up collection device (11).

2. The solid waste heat decomposing slag tapping system as claimed in claim 1, wherein said cooler (2) is a water-cooled screw conveyor.

3. The solid waste heat decomposing slag discharging system as claimed in claim 2, wherein the water inlet of said water cooling screw conveyor is connected with the water outlet of the water cooling tower (10), and the water outlet of said water cooling screw conveyor is connected with the water inlet of the water cooling tower (10).

4. The solid waste heat pyrolysis slag tapping system as claimed in claim 1, wherein the dust remover comprises a primary dust remover (6) and a secondary dust remover (7), and the gas collecting hood (5) is sequentially connected with the primary dust remover (6), the secondary dust remover (7) and the induced draft fan (8).

5. The solid waste heat pyrolysis slag discharging system as claimed in claim 4, wherein said primary dust remover (6) is a cyclone dust remover, and said secondary dust remover (7) is a cloth bag dust remover.

6. The solid waste heat decomposing slag discharging system as claimed in claim 1, wherein said induced draft fan (8) is connected to a chimney (9).

7. The solid waste heat decomposing slag tapping system as claimed in claim 1, wherein said screening machine (4) is a drum screening machine.

8. The solid waste heat decomposing slag discharging system as claimed in claim 1, wherein a lifting machine (3) is arranged between said cooler (2) and said sieving machine (4).