CN216047777U

CN216047777U - Solid waste incineration rotary kiln coke cleaning device

Info

Publication number: CN216047777U
Application number: CN202122059405.0U
Authority: CN
Inventors: 张长富; 周永贤; 张永良; 陈纪赛
Original assignee: CSSC Nanjing Luzhou Environment Protection Co Ltd
Current assignee: CSSC Nanjing Luzhou Environment Protection Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-15
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to a decoking device of a solid waste incineration rotary kiln, which comprises a decoking device arranged on a secondary combustion chamber barrel, wherein the decoking device is arranged at the tail part of the rotary kiln, the rotary kiln barrel rotates relative to the decoking device, and a gap is arranged between the decoking device and the inner wall of the rotary kiln barrel and is used for clearing coking at the tail part of the rotary kiln. One end of the coke cleaning device is vertically fixed in the secondary combustion chamber, and the other end of the coke cleaning device is suspended in the rotary kiln and cannot rotate along with the rotation of the rotary kiln, so that cokes adhered to the tail of the rotary kiln can be automatically cleaned, and the problem that the tail of the solid waste incineration rotary kiln needs to be stopped for cleaning is effectively solved.

Description

Solid waste incineration rotary kiln coke cleaning device

Technical Field

The utility model belongs to the technical field of environment-friendly equipment, and particularly relates to a decoking device of a solid waste incineration rotary kiln.

Background

In the process of incinerating and treating solid wastes, the components of the incinerated substances are complex, and in the high-temperature incineration process, some wastes containing substances with lower ash melting points, such as glass, packing materials containing aluminum and magnesium (the ash melting point of which is about 650 ℃), sodium carbonate (the ash melting point of which is about 854 ℃) and the like, which are in a molten state at high temperature, move to the tail of the kiln along with flue gas, the temperature at the tail of the kiln is reduced, molten inorganic substances are cooled to form a solid state and are adhered to the wall of equipment to form jelly-like substances, the coke at the tail of the kiln is increased after long-time operation, so that the performance of the rotary kiln is greatly reduced, and the rotary kiln needs to be stopped for cleaning.

The existing rotary kiln coke cleaning device usually drives a blade to cut the inner wall of a rotary kiln for a rotating motor, and the rotary kiln is not only required to be opened, but also required to be driven by electric energy, so that the rotary kiln coke cleaning device is not energy-saving and environment-friendly. Through search, the Chinese patent with the publication number of CN213066124U discloses a rotary kiln head coke cleaning device, which adopts a speed reduction motor to drive a connecting rod structure to drive a material cleaning push rod to rotate so as to clean materials. Chinese patent publication No. CN106091674A discloses a rotary kiln coke removal device, which comprises: the spiral cutting device is designed with self weight to form proper friction with the inner wall of the rotary furnace body, and the spiral cutting device rotates along with the rotary furnace and forms reciprocating vertical movement along the inner wall of the track of the baffle to ensure good cleaning effect on the coking materials; chinese patent application publication No. CN111849519A discloses a self-coke-cleaning device, which is arranged in a pyrolysis rotary kiln and is fixedly mounted on a fixing seat outside the pyrolysis rotary kiln, the self-coke-cleaning device comprises: the fixing frame comprises a base plate, a partition plate, a first connecting plate and a second connecting plate, the partition plate is fixed in the middle area of the base plate, the first connecting plate is respectively fixed to one end of the partition plate and one end of the base plate and surrounds to form a first cavity, the second connecting plate is respectively fixed to the other end of the partition plate and the other end of the base plate and surrounds to form a second cavity, and the first cavity is communicated with the second cavity; the scraper, the scraper is installed to the mount, and the tool bit of scraper has certain clearance apart from the inner wall of pyrolysis rotary kiln, can the automatic clear pyrolysis rotary kiln in the burnt layer that waste material pyrolysis processes such as fatlute produced. Patent 106091674A adopts and places the helical cutting ware decoking in the rotary kiln, makes the rotary kiln inner wall coke thing scraped through the gravity of cutterbar in the rotary kiln rotation process, and the rotary kiln rotational speed is slow generally 1~3rad/min moreover, and this kind is poor, incomplete by dead weight mode decoking effect, and the jelly that will form is compacted more easily, and the jelly also grows constantly easily on the helical cutting ware and leads to the spiral bigger and bigger. Patent CN111849519A adopts the scraper, and the installation base does not wrap up resistant material and leads to water cooling, and the time of having become for a long time between scraper and the base can break, and it is troublesome to change.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the prior art and provide the energy-saving and environment-friendly decoking device of the solid waste incineration rotary kiln, which does not need to be driven by electric energy.

In order to solve the technical problem, the utility model provides a decoking device of a solid waste incineration rotary kiln, which comprises a decoking device arranged on a secondary combustion chamber cylinder, wherein the decoking device is arranged at the tail part of the rotary kiln, the decoking device is fixed, the rotary kiln cylinder rotates relative to the decoking device, and a gap is arranged between the decoking device and the inner wall of the rotary kiln cylinder and used for clearing coking at the tail part of the rotary kiln.

The coke cleaner is fixed in position and does not rotate along with the rotary kiln, and jelly adhered to the outlet at the tail of the rotary kiln can be continuously removed through friction between the coke cleaner and the inner wall of the rotary kiln in the running process of the rotary kiln, so that the situation that the coke cleaner is accumulated at the tail of the rotary kiln is avoided.

The further optimized technical scheme of the utility model is as follows:

furthermore, the coke cleaner is vertically arranged on the second combustion chamber barrel body so as to facilitate the parallel arrangement of the side wall of the coke cleaner and the inner wall of the rotary kiln, and a gap is reserved between the side wall of the coke cleaner and the inner wall of the rotary kiln, thereby facilitating the rotation of the rotary kiln and preventing the rotary kiln from being blocked by the coke cleaner in the rotating process. Also, the clearance that remains prevents the decoker from being damaged by the rotary kiln during rotation.

Furthermore, one end of the coke cleaner is fixedly arranged on the second combustion chamber cylinder, and the other end of the coke cleaner is positioned in the rotary kiln and suspended in the air.

Therefore, the coke cleaner is hung at the tail part of the rotary kiln and is fixed on the secondary combustion chamber barrel through bolts, so that the coke cleaner is prevented from rotating along with the rotary kiln, and is convenient to disassemble and replace.

Furthermore, the coke cleaning device is arranged on the second combustion chamber cylinder body through a flange.

Furthermore, the coke cleaning device is of a U-shaped structure with a hollow interior, a partition plate is arranged in the cavity of the U-shaped structure, and the partition plate divides the inner cavity of the coke cleaning device into a water inlet cavity and a water outlet cavity, wherein one end of the water inlet cavity is communicated with the water outlet cavity.

In the structure, the coke cleaning device adopts a U-shaped structure, so that the coke cleaning device is conveniently fixed outside the rotary kiln on the one hand, and the glued objects at the inner wall and the section of the rotary tail part are conveniently cleaned on the other hand.

Furthermore, one transverse edge of the U-shaped structure is fixedly arranged on the secondary combustion chamber barrel through a flange, the other transverse edge of the U-shaped structure is arranged in the tail end of the rotary kiln in a hanging mode, and a gap is formed between the inner side of the transverse edge and the inner wall of the rotary kiln barrel, so that jelly on the inner wall of the rotary kiln can be conveniently cleaned.

Furthermore, the water inlet chamber is connected with the cooling water inlet, and the water outlet chamber is connected with the cooling water outlet.

Above-mentioned structure, the inside cooling water that lets in of coke cleaning device is because kiln tail temperature is high, leads to the cooling water and conveniently cools down for coke cleaning device, prolongs its life.

Furthermore, a thermometer is arranged on the cooling water outlet.

The temperature of the cooling water outlet is monitored by the thermometer, so that whether the coke cleaner is normal or not is helped to be found, and the outer refractory of the coke cleaner can fall off if the temperature rises sharply.

Furthermore, the outer part of the coke cleaning device is positioned in the second combustion chamber, and a refractory material is arranged in the second combustion chamber.

Therefore, the coke cleaning device arranged in the secondary combustion chamber can be prevented from being damaged by high temperature in the secondary combustion chamber.

Furthermore, an ash hopper is arranged at the bottom of the secondary combustion chamber cylinder, and an opening of the ash hopper is arranged towards the tail of the rotary kiln.

By adopting the structure, when the decoking device clears the jelly at the tail part of the rotary kiln, the jelly falls into the ash bucket under the action of free falling body.

The coke cleaning device has the advantages of simple structure, long service life and convenient replacement, one end of the coke cleaning device is vertically fixed in the secondary combustion chamber, the other end of the coke cleaning device is suspended in the rotary kiln and can not rotate along with the rotation of the rotary kiln, and the coke cleaning device can automatically clean the coke adhered to the tail part of the rotary kiln, thereby effectively solving the problem that the tail part of the solid waste incineration rotary kiln needs to be stopped for cleaning.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the installation of the present invention.

In the figure: 1. the secondary combustion chamber comprises a secondary combustion chamber cylinder, 2 a coke cleaning device, 3 a partition plate, 4a cooling water inlet, 5 a thermometer, 6 a cooling water outlet, 7 a rotary kiln cylinder, 8 a refractory material layer and 9 an ash bucket.

Detailed Description

Example 1

The embodiment provides a solid useless rotary kiln coke cleaning device that burns, as shown in fig. 1 and 2, including installing coke cleaning device 2 on two combustion chamber barrels 1, coke cleaning device 2 sets up in the afterbody of rotary kiln to coke cleaning device 2 is fixed motionless, and rotary kiln barrel 7 rotates for coke cleaning device 2, is equipped with the clearance between the inner wall of coke cleaning device 2 and rotary kiln barrel 7, is used for cleaing away rotary kiln afterbody coking. An ash hopper 9 is arranged at the bottom of the secondary combustion chamber cylinder 1, and an opening of the ash hopper 9 is arranged towards the falling direction of the jelly at the tail of the rotary kiln.

The specific description is as follows: the coke cleaner 2 is vertically arranged on the second combustion chamber cylinder 1, one end of the coke cleaner is fixedly arranged on the second combustion chamber cylinder 1 through a flange, and the other end of the coke cleaner is positioned in the rotary kiln and arranged in a suspension manner. The coke cleaning device 2 is of a hollow U-shaped structure, a partition plate 3 is arranged in an inner cavity of the U-shaped structure, the partition plate 3 divides an inner cavity of the coke cleaning device 2 into a water inlet cavity and a water outlet cavity, one end of the water inlet cavity is communicated with the water outlet cavity, the water inlet cavity is connected with the cooling water inlet 4, the water outlet cavity is connected with the cooling water outlet 6, and the cooling water outlet 6 is provided with a thermometer 5. One transverse edge of the U-shaped structure is fixedly arranged on the second combustion chamber barrel body 1 through a flange, the other transverse edge is arranged in the tail end of the rotary kiln in a hanging mode, and a gap is formed between the inner side of the transverse edge and the inner wall of the rotary kiln barrel body 7, so that jelly on the inner wall of the rotary kiln can be cleaned conveniently. A refractory material layer 8 is arranged outside the coke cleaning device 2 and inside the second combustion chamber.

In the rotary kiln rotation process, the saliferous solid waste is burnt in the rotary kiln to generate high-temperature melt and flue gas, the high-temperature melt and the flue gas move to a kiln tail outlet together, and the high-temperature melt and the flue gas are bonded and coked at a kiln tail low-temperature position. Along with the increase of the thickness of the bonded coke, the rotary kiln rotates to drive the coke bonded at the tail of the kiln to contact with the coke cleaner, and the coke cleaner scrapes off the coke and falls into the ash bucket. Therefore, the method can remove the coke adhered at the tail of the kiln to ensure that the rotary kiln can stably run for a long time, and has the advantages of economy and practicability.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a solid useless burning rotary kiln coke cleaning device which characterized in that: the coke cleaning device is arranged at the tail part of the rotary kiln, the rotary kiln barrel rotates relative to the coke cleaning device, and a gap is arranged between the coke cleaning device and the inner wall of the rotary kiln barrel and used for cleaning coke at the tail part of the rotary kiln.

2. The solid waste incineration rotary kiln decoking device as recited in claim 1, characterized in that: the coke cleaning device is vertically arranged on the second combustion chamber cylinder.

3. The solid waste incineration rotary kiln decoking device as recited in claim 2, characterized in that: one end of the coke cleaner is fixedly arranged on the second combustion chamber cylinder, and the other end of the coke cleaner is positioned in the rotary kiln and suspended in the air.

4. The solid waste incineration rotary kiln decoking device as recited in claim 3, characterized in that: the coke cleaning device is arranged on the second combustion chamber cylinder body through a flange.

5. The solid waste incineration rotary kiln decoking device as recited in claim 1, characterized in that: the coke cleaning device is of a U-shaped structure with a hollow interior, a partition plate is arranged in the cavity of the U-shaped structure, and the partition plate divides the inner cavity of the coke cleaning device into a water inlet cavity and a water outlet cavity, wherein one end of the water inlet cavity is communicated with the water outlet cavity.

6. The solid waste incineration rotary kiln decoking device as recited in claim 5, characterized in that: one transverse edge of the U-shaped structure is fixedly arranged on the secondary combustion chamber cylinder through a flange, the other transverse edge is arranged in the tail end of the rotary kiln in a suspended mode, and a gap is formed between the inner side of the transverse edge and the inner wall of the rotary kiln cylinder.

7. The solid waste incineration rotary kiln decoking device as recited in claim 6, characterized in that: the water inlet cavity is connected with the cooling water inlet, and the water outlet cavity is connected with the cooling water outlet.

8. The solid waste incineration rotary kiln decoking device as recited in claim 7, characterized in that: and a thermometer is arranged on the cooling water outlet.

9. The solid waste incineration rotary kiln decoking device as recited in claim 1, characterized in that: and the outer part of the coke cleaning device is positioned in the second combustion chamber and is provided with a refractory material.

10. The solid waste incineration rotary kiln decoking device as recited in claim 1, characterized in that: an ash bucket is arranged at the bottom of the second combustion chamber cylinder.