CN218914941U - Step-by-step solid waste handles high temperature incinerator - Google Patents

Abstract

The utility model discloses a stepping type solid waste disposal high-temperature incinerator, which mainly comprises an incinerator, a decomposing furnace, a feeding pipeline, a tertiary air pipe, a pushing material bed and the like, wherein the feeding pipeline is arranged at the front end of the incinerator and is connected with the tertiary air pipe, the rear end of the incinerator is connected with the decomposing furnace, the pushing material bed is arranged in the incinerator to transport solid waste, the pushing material bed is provided with a material turning device to realize turning of the solid waste in the conveying process, the solid waste contacts with the high-temperature tertiary air in the incinerator to burn, the solid waste is efficiently incinerated under the action of the pushing material bed conveying and turning device, and the burned residues are conveyed into the decomposing furnace. The utility model discloses a high-temperature incinerator for disposing of step-type solid waste, which solves the technical problems of low burnout rate, unstable combustion, poor production quality and high heat loss in the prior art.

Description

Step-by-step solid waste handles high temperature incinerator

Technical Field

The utility model relates to the field of waste treatment, in particular to a stepping solid waste treatment high-temperature incinerator.

Background

The cement is an important way for reducing carbon dioxide emission, at present, a cement kiln is used for disposing the solid waste, whether pretreatment is needed is generally selected according to the granularity, the moisture, the heat value and the like of the solid waste, and the aim of the pretreatment is to directly put the solid waste into a decomposing furnace for incineration after controlling the granularity, the moisture and the heat value of the solid waste to be within a certain range or put into special incineration equipment for incineration and then put into the decomposing furnace of the cement kiln.

The mode of directly feeding the solid waste into the decomposing furnace for burning has great influence on cement production and limited disposal quantity. The solid waste is incompletely combusted in the decomposing furnace to generate post combustion, so that the system CO fluctuates, the temperature of the preheater system rises, and the heat consumption of the system rises; the temperature fluctuation of the decomposing furnace is large because the combustion of the solid waste in the decomposing furnace is unstable, and the kiln production quality is affected; part of the solid waste is not well dispersed and directly falls into the rotary kiln to burn, so that the local height Wen Jiepi is high and the quality of clinker is affected.

At present, the cement industry uses more solid waste incineration equipment such as a gasification furnace, a hot plate furnace, a step furnace, a fire grate furnace and the like, and although the treatment efficiency of solid waste can be improved, the influence on the production operation and the production quality of a cement kiln is reduced, the cement kiln has some defects: such as low burnout rate, poor material adaptability, great influence on the process equipment of the raw cement production line by transformation, great amount of leaked cold air, high heat loss and the like.

Accordingly, there is a need to provide a stepped high temperature solid waste incineration apparatus to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a stepping solid waste disposal high-temperature incinerator, which aims to solve the technical problems of low burnout rate, unstable combustion, poor production quality and high heat loss in the prior art.

The utility model provides a stepping type solid waste disposal high-temperature incinerator, which comprises an incinerator, a decomposing furnace, a feeding pipeline, a tertiary air pipe and a pushing material bed, and is characterized in that the front end of the incinerator is provided with the feeding pipeline and is connected with the tertiary air pipe, the rear end of the incinerator is connected with the decomposing furnace, the pushing material bed is arranged in the incinerator to push solid waste to transport, and a material turning device is arranged on the pushing material bed to turn the solid waste.

Further, the feeding pipeline is divided into a solid waste feeding channel and a raw material feeding channel, and feeding air locking devices are arranged on the solid waste feeding channel and the raw material feeding channel.

Further, an adjusting valve is arranged at the inlet of the tertiary air pipe.

Further, the pushing material bed is arranged in the incinerator, the tail end of the pushing material bed is connected with the decomposing furnace, the pushing material bed is arranged in a plurality of rows according to the waste disposal scale, and the turning device is arranged on the pushing material bed.

Further, the pushing material bed is driven by a hydraulic system, and a refractory layer is arranged on the pushing material bed and is a refractory structure consisting of SH400 nanometer heat insulation plates and high-strength wear-resistant castable. The lower part of the pushing material bed is a fully sealed cavity, and a small fan is arranged on the sealed cavity to protect the safety of a hydraulic system below the material bed and used for driving the pushing material bed.

Further, the pushing material beds are driven by the hydraulic system to move in steps, and the pushing material rolls forward.

Based on the technical scheme, the utility model has the following advantages:

(1) The adaptability to solid wastes is good. The residence time of the solid waste in the incinerator can be regulated by the driving speed of the hydraulic cylinder and the stroke of the hydraulic cylinder, the incineration time can reach 10-20min, and is longer than that of the existing incinerator of the cement kiln, and meanwhile, high-temperature tertiary air with the temperature of 900-1000 ℃ is used as an ignition heat source, so that the incinerator has better adaptability to the granularity, the moisture and the heat value of the solid waste.

(2) The combustion efficiency and the burnout rate are high. The solid waste is accompanied with the material rolling and the strong sweeping of high-temperature tertiary air in the moving process of the incinerator, and meanwhile, the long enough incineration residence time is ensured, so that the high combustion efficiency and burnout rate of the solid waste treatment can be ensured.

(3) The device is connected with a cement kiln simply, has less technical improvement cost and short period, and has little influence on the process setting of a cement production line.

(4) The whole step-by-step incinerator is of a closed structure, is statically connected with the cement kiln decomposing furnace and the tertiary air pipe, and has less air leakage.

(5) The equipment has simple structure, can be made into modularized configuration, and is convenient to overhaul and maintain.

Drawings

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

FIG. 2 is a top view of the structure of an embodiment of the present utility model;

FIG. 3 is a flowchart of an installation operation of an embodiment of the present utility model;

in the figure: 1. an incinerator; 2. a decomposing furnace; 3. a feeding pipe; 4. a tertiary air duct; 5. pushing the material bed; 6. a flipping device; 7. a solid waste feed channel; 8. a raw material feeding channel; 9. a cement kiln smoke chamber; 10. adjusting a valve; 11. a cyclone; 12. a refractory layer; 13. sealing the cavity; 14. a small fan.

Detailed Description

For a better understanding of the objects, structure and function of the present utility model, a stepped solid waste disposal high temperature combustor of the present utility model will be described in further detail with reference to the accompanying drawings.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the present utility model provides a stepped solid waste disposal high temperature incinerator comprising an incinerator 1, a decomposing furnace 2, a feeding pipe 3, a tertiary air pipe 4, a pushing material bed 5, etc. The front end of the incinerator 1 is provided with a feeding pipeline 3, a solid waste feeding channel 7 is connected with a raw material feeding channel 8, and the amount of raw material entering the raw material feeding channel 8 can be adjusted for adjusting the temperature in the incinerator; the front end of the incinerator 1 is provided with a tertiary air pipe 4 for connection, and a tertiary air inlet is provided with an adjusting valve 10 for adjusting the tertiary air quantity entering the incinerator 1; the rear end of the incinerator 1 is connected with the decomposing furnace 2, the inclination angle of a connecting chute with the decomposing furnace and the horizontal is more than or equal to 55 degrees, and the incinerator is provided with anti-skinning refractory materials to prevent the slag from skinning.

As shown in fig. 2, a pushing material bed 5 is arranged in the incinerator 1, the pushing material bed 5 is composed of a plurality of rows of material beds which are longitudinally arranged, sealing devices are arranged between the rows to prevent material leakage between the rows of material beds, and the pushing material bed 5 is inclined at an angle of 0-15 degrees with respect to the horizontal plane. The material beds are combined in a modularized manner, 6-10 rows of material beds are configured, and the corresponding solid waste disposal capacity can reach 300-800 t/d.

The pushing material beds 5 are driven by a hydraulic system and take hydraulic cylinders as executing elements, so that each row of material beds simultaneously move forwards and backwards in steps, the pushing stroke of each row of material beds can be adjusted within the range of 200-400 mm, the pushing speed can be adjusted in a stepless manner for 2-8 times/min, the residence time and the combustion progress of the solid waste in the incinerator 1 are controlled, and the combustion residence time is adjustable for 10-20 min.

The pushing material bed 5 is made of heat-resistant stainless steel, and a refractory layer 12 formed by jointly combining SH400 nanometer heat-insulating plates with the thickness of 60mm and high-strength wear-resistant castable with the thickness of 100mm is paved on the pushing material bed 5 and used for protecting and insulating the material bed, prolonging the service life of the material bed and reducing heat transfer to the lower part of the material bed.

A plurality of material turning devices are arranged on each row of pushing feed beds 5, so that the effect that solid waste burns while turning in the conveying process is achieved, and the material can be burnt more fully and thoroughly.

As shown in fig. 3, a sealing cavity 13 is arranged below the pushing material bed 5, and air fed by a small fan 14 arranged in the sealing cavity 13 is used for reducing the temperature in the sealing cavity to protect the safety of a hydraulic system and has a certain sealing effect. A small amount of ash slag leaked from the pushing material bed is discharged to the smoke chamber 9 of the cement kiln periodically through the sealing cavity 13. The raw meal powder is preheated by the cyclone 11, enters a decomposing furnace for carbonate decomposition, enters the C5 cyclone 11 for separation, and enters a rotary kiln for calcination.

In addition, the stepping type solid waste disposal high-temperature incinerator is provided with a set of operation monitoring system for ensuring safe and stable operation of an operating system, and mainly comprises a material bed pushing pressure monitoring system, a material bed upper gas temperature monitoring and controlling system, a material bed lower sealing cavity temperature monitoring system and the like.

The specific working process of the utility model is as follows:

the solid waste and the raw meal enter the incinerator 1 from a solid waste feeding channel 7 and a raw meal feeding channel 8 respectively, fall on a pushing material bed 5, and enter from the front end of the incinerator 1 through a tertiary air pipe 4. The solid waste is blown by tertiary air with the temperature of 900-1000 ℃ on the pushing material bed 5 to burn on fire, the solid waste is pushed and turned over by the material bed to realize layered stripping type high-efficiency burning and moves towards the rear end of the incinerator, the residue after burning falls into the decomposing furnace 2 to be continuously decomposed in a high-temperature environment, and ash enters the cement kiln to be calcined into cement clinker at high temperature, so that the purpose of harmless and recycling disposal of the solid waste is achieved. The pushing speed of the material bed is regulated through the pushing frequency and the stroke of a hydraulic system for driving the material bed, so that the incineration time of the solid waste reaches 10-20 min. Temperature control in the incinerator 1 can be achieved by adjusting the amount of raw meal entering the incinerator.

It will be understood that the utility model has been described with respect to certain embodiments and that various changes and equivalents may be made to those features and embodiments without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (5)

1. The utility model provides a marching type solid waste handles high temperature and burns burning furnace, includes burning furnace (1), decomposition furnace (2), feed pipeline (3), tertiary air pipe (4), promotes material bed (5), its characterized in that, the front end that burns burning furnace (1) sets up feed pipeline (3) and hookup tertiary air pipe (4), and the rear end hookup decomposition furnace (2) that burns burning furnace (1) set up in burning furnace (1) and promote material bed (5) and promote solid waste transportation, set up material turning device (6) on promoting material bed (5) and turn solid waste.

2. A stepped solid waste disposal high temperature incinerator according to claim 1, characterised in that the feed conduit (3) is divided into a solid waste feed channel (7) and a raw meal feed channel (8), and that a feed lock is provided on both the solid waste feed channel (7) and the raw meal feed channel (8).

3. A stepped solid waste disposal high temperature incinerator according to claim 1, characterised in that the inlet of the tertiary air duct (4) is provided with a regulating valve (10).

4. A stepped solid waste disposal high temperature incinerator according to claim 1, characterized in that the pushing material bed (5) is arranged inside the incinerator (1), the end of the pushing material bed (5) is connected with the decomposing furnace (2), the pushing material beds (5) are arranged in a plurality of rows according to the waste disposal scale, and the turning device (6) is arranged on the pushing material beds (5).

5. The stepped solid waste disposal high-temperature incinerator according to claim 1, wherein the pushing material bed (5) is driven by a hydraulic system, a fire-resistant layer (12) is arranged on the pushing material bed (5), a fully-sealed sealing cavity (13) is arranged below the pushing material bed (5), and a small fan (14) is arranged on the sealing cavity (13) to protect the safety of the hydraulic system below the pushing material bed (5).

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