CN213178347U

CN213178347U - Slag discharge device of circulating fluidized bed domestic garbage incinerator

Info

Publication number: CN213178347U
Application number: CN202021432911.9U
Authority: CN
Inventors: 王欢; 郎鹏德; 郎秀荣; 杨荣青; 韩兆强; 蔡祥义; 尚群; 梁华
Original assignee: Xinzhou Jiejin Power Generation Co ltd
Current assignee: Xinzhou Jiejin Power Generation Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-05-11
Anticipated expiration: 2030-07-20

Abstract

The utility model provides a slag discharge device of a circulating fluidized bed domestic garbage incinerator, belonging to the technical field of garbage incineration; the problem that the slag discharge pipe cannot smoothly discharge slag due to blockage and even coking of the slag discharge port of the circulating fluidized bed domestic garbage incinerator is solved; the device specifically comprises a fluidized bed body and a slag discharging barrel arranged at a slag discharging port of the fluidized bed body, wherein the cross section of the slag discharging barrel is oval or long round, a directional hood is arranged at the port of one end of the slag discharging barrel, an air outlet of the directional hood faces the center of the slag discharging barrel, and a sealing device is arranged at the joint of the slag discharging barrel and the fluidized bed body; the device increases the slag discharge area, reduces the blockage of the slag discharge port, improves the sealing property of the slag discharge barrel and the fluidized bed body, and greatly relieves the problems of blockage of the slag discharge port, coking, unsmooth slag discharge pipe and the like.

Description

Slag discharge device of circulating fluidized bed domestic garbage incinerator

Technical Field

The utility model belongs to the technical field of msw incineration, concretely relates to circulating fluidized bed domestic waste burns burning furnace and arranges sediment device.

Background

The method for treating the garbage by the circulating fluidized bed garbage incinerator is a green treatment mode, so that the environment is protected, dioxin is prevented from being generated, land occupation and landfill pollution to underground water are avoided, waste materials are changed into valuable materials, and grid-connected power generation or heat supply is realized. However, due to the imperfect process of garbage classification, the circulating fluidized bed domestic garbage incinerator often causes the blockage and coking of the slag discharge hole at the bottom of the hearth due to the unreasonable arrangement of the slag discharge hole of the hearth during the actual operation: some waste incineration plants do not have waste sorting equipment in front of the furnace or waste sorting is not fine, so that the size of garbage entering the furnace is large, for example, large stones, long iron wires and the like exist, and the garbage can be blocked due to the fact that a slag discharge port is too small, so that slag discharge at the bottom of the furnace is not smooth.

Cracking and spalling of the refractory material occurs due to temperature cycling and thermal shock. When the temperature fluctuates cyclically, internal stress is formed due to the difference of thermal expansion coefficients between the refractory aggregate and the binder, so that the refractory material layer is damaged and cracks are generated. When the temperature changes rapidly, thermal shock is caused, the stress in the refractory material exceeds the tensile strength and peels off, so that large wear-resistant castable or coke blocks and the like stay at the inlet of the slag discharge pipe to cause slag discharge blockage, and the air-slag mixture is discharged from the inlet to form slag discharge pipe air blast. The above factors can cause the blockage and even coking of the common slag discharging port, so that the slag discharging pipe has unsmooth slag discharging.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a circulating fluidized bed garbage incinerator sediment device. Solves the problem that the slag discharge pipe has unsmooth slag discharge due to the blockage and even coking of the slag discharge port of the circulating fluidized bed domestic garbage incinerator.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

The utility model provides a circulating fluidized bed domestic waste burns burning furnace and arranges sediment device, includes the fluidized bed body and sets up the sediment section of thick bamboo of arranging in fluidized bed body row's of sediment department, arrange the cross section of sediment section of thick bamboo and be oval or long circle, the port department of sediment section of thick bamboo one end is provided with directional hood, directional hood's air outlet orientation is arranged sediment section of thick bamboo center, arranges the junction of sediment section of thick bamboo and fluidized bed body and is equipped with sealing device.

Further, the slag discharging cylinder is arranged along the axial direction of the fluidized bed body.

Furthermore, a plurality of directional blast caps are uniformly arranged on the edge of the outlet of the slag discharge barrel.

Further, the directional hood is of a 7-shaped structure.

Furthermore, one end of the air inlet of the directional hood is fixedly connected to the fluidized bed body.

Further, the sealing device is a folded plate.

Furthermore, one end of the folded plate is connected with the slag discharging barrel, and the other end of the folded plate is connected with the fluidized bed body.

The utility model discloses produced beneficial effect does for prior art.

1. The fluidized bed of the utility model adopts an oval or long round deslagging cylinder to arrange the long axis of the deslagging port evenly along the center line of the length direction of the fluidized bed. The slag discharging barrel in the form can prevent a slag discharging opening from being blocked by large coke blocks generated when the garbage is too large and the combustion is incomplete; on the other hand, the large castable can be prevented from staying at a slag discharge port due to cracks and peeling of the refractory material caused by temperature cycle fluctuation and thermal shock; compared with a pure device for enlarging the circular slag discharge hole, the device has smaller influence on the fluidization condition, and the circular designs at the two ends are favorable for the arrangement of blast caps and are more favorable for fluidization.

2. The periphery of the slag discharge cylinder is provided with a 7-shaped directional blast cap, and the basic application is as follows: firstly, directional blowing is beneficial to discharging large slag blocks; secondly, the disturbance of the bed bottom material layer is increased.

3. In the actual operation of the boiler, the slag discharging pipe is heated to expand, and the slag discharging pipe can tear a welding seam between the slag discharging pipe and the fluidized bed to cause air leakage. The utility model discloses a folded plate that adopts between row's sediment section of thick bamboo and the fluidized bed is connected sealing device, can to a great extent solve the problem that row's sediment pipe leaks out.

4. The device can also effectively reduce the boiler maintenance caused by the blockage of the slag discharge port, reduce the requirement of the boiler on garbage classification, reduce the investment of the front garbage sorting equipment, and save a large amount of funds for manufacturers by using a simple device.

Drawings

FIG. 1 is a front view of the slag discharge device of the present invention;

fig. 2 is a sectional view taken along line a-a of fig. 1.

Wherein, 1 is the fluidized bed body, 2 is the sediment section of thick bamboo, 3 is directional hood, and 4 is the folded plate.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in fig. 1, a slag discharging device of a circulating fluidized bed domestic garbage incinerator comprises a fluidized bed body 1 and a slag discharging cylinder 2 arranged at a slag discharging port of the fluidized bed body, wherein the slag discharging cylinder 2 is arranged along the axial direction of the fluidized bed body 1, the cross section of the slag discharging cylinder is oblong, as shown in fig. 2, a folded plate 4 for sealing is arranged at the joint of the slag discharging cylinder 2 and the fluidized bed body 1, the folded plate 4 is made of stainless steel, one end of the folded plate 4 is welded with the slag discharging cylinder 2, and the other end of the folded plate is welded with the fluidized bed body 1; arrange the directional hood 3 of a plurality of "7" font structures evenly at row sediment section of thick bamboo 2's export edge, the air intake one end fixed connection of directional hood 3 is on fluidized bed body 1, and the air outlet one end is towards row sediment section of thick bamboo 2 center, and directional hood 3 is connected with the air feed device, and directional hood 3 adopts the mode of directional blowing to promote the discharge of big sediment piece, the disturbance of multiplicable bed bottom bed material layer simultaneously.

The sediment section of thick bamboo structure of arranging of this device compares current circular sediment section of thick bamboo of arranging, its area increases, the condition of the cinder notch is arranged in the jam of the bold coke piece that originally produces when going into the stove rubbish too big and burning incomplete and the condition that the bold pouring material that causes the refractory material to produce crackle and peel off and produce will be avoided at the cinder notch of arranging because of temperature cycle fluctuation and thermal shock like this, compare the circular cinder notch device of arranging of simple expansion, it is littleer to adopt the long circle to arrange the influence of cinder notch to the fluidization condition, and the circular design in both ends does benefit to arranging of hood, more do benefit to the fluidization.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a circulating fluidized bed domestic waste burns burning furnace and arranges sediment device, includes the fluidized bed body and sets up the sediment section of thick bamboo of arranging in fluidized bed body row's of sediment department, its characterized in that, the cross section of arranging the sediment section of thick bamboo is oval or long circle, the port department of arranging sediment section of thick bamboo one end is provided with directional hood, directional hood's air outlet is towards arranging sediment section of thick bamboo center, arranges the junction of sediment section of thick bamboo and fluidized bed body and is equipped with sealing device.

2. The slag discharge device of a circulating fluidized bed domestic waste incinerator according to claim 1, wherein said slag discharge drum is disposed axially along the fluidized bed body.

3. The slag discharge device of a circulating fluidized bed garbage incinerator according to claim 1, wherein a plurality of directional hoods are uniformly arranged on the outlet edge of said slag discharge cylinder.

4. The deslagging device of the circulating fluidized bed domestic garbage incinerator of claim 1 or 3, wherein the directional hood is in a 7-shaped structure.

5. The deslagging device of the circulating fluidized bed domestic garbage incinerator of claim 4, wherein one end of the air inlet of the directional hood is fixedly connected to the fluidized bed body.

6. The deslagging apparatus of a circulating fluidized bed domestic waste incinerator of claim 1, wherein said sealing means is a flap.

7. The slag discharge device of a circulating fluidized bed domestic garbage incinerator according to claim 6, wherein said flap is connected to the slag discharge cylinder at one end and to the fluidized bed body at the other end.