CN209944342U

CN209944342U - Gasification pyrolysis rotary kiln

Info

Publication number: CN209944342U
Application number: CN201920116832.8U
Authority: CN
Inventors: 张天琦; 杨宏伟; 冷富荣; 刘洋; 罗智宇
Original assignee: Everbright Envirotech China Ltd; Everbright Environmental Protection Research Institute Nanjing Co Ltd
Current assignee: Everbright Envirotech China Ltd; Everbright Environmental Protection Research Institute Nanjing Co Ltd
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2020-01-14
Anticipated expiration: 2029-01-23

Abstract

The utility model provides a gasification pyrolysis rotary kiln. The gasification pyrolysis rotary kiln comprises: a kiln body; the feeding hole is formed in the first end of the kiln body; the primary air port is arranged at the second end of the kiln body, and the first end and the second end are oppositely arranged in the length direction of the kiln body; wherein the first end is also provided with a secondary air port for supplementing oxygen to the gas generated after the pyrolysis of the material entering the kiln body from the feeding hole. According to the utility model discloses a gasification pyrolysis rotary kiln sets up the feed inlet in the first end of rotary kiln, and the second end sets up a wind gap, makes the opposite direction that a wind and material got into, makes in the material combustion process with a wind misce bene, the material is close to the second end more, and oxygen is abundant more, makes the burning thoroughly more, sets up the secondary air gap simultaneously in first end, thereby can use the gas that the pyrolysis produced as fuel, makes the flue gas reach corresponding temperature when having saved the fuel use amount.

Description

Gasification pyrolysis rotary kiln

Technical Field

The utility model relates to a refuse treatment field particularly relates to a gasification pyrolysis rotary kiln.

Background

With the continuous expansion of the number and scale of towns, the requirement on the treatment of town garbage is higher and higher. The urban domestic garbage has the characteristics of high moisture, complex components and large heat value change, and the garbage is treated in a harmless mode mainly including garbage classification recovery, landfill, composting, incineration, pyrolysis gasification and the like.

The household garbage incineration power generation is used as a currently rapidly developed garbage disposal mode, the volume of the garbage can be reduced by 90%, the quality of the garbage can be reduced by 70% -80%, the heat generated by incineration can be used for power generation, and the purposes of harmlessness, reduction and recycling of the garbage disposal can be realized.

Therefore, there is a need for a new rotary kiln for gasification pyrolysis, which solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

The utility model provides a gasification pyrolysis rotary kiln, include:

a kiln body;

the feeding hole is formed in the first end of the kiln body;

the primary air port is arranged at the second end of the kiln body, and the first end and the second end are oppositely arranged in the length direction of the kiln body; wherein

And the first end is also provided with a secondary air port for supplementing oxygen to the gas generated after the pyrolysis of the material entering the kiln body from the feeding hole.

Illustratively, the secondary tuyere includes a rotary kiln slot disposed at the first end.

Exemplarily, the kiln further comprises a second combustion chamber connected to the first end, and gas generated after pyrolysis of the material entering the kiln body from the feeding hole is introduced into the second combustion chamber.

Illustratively, the combustor further comprises a burner disposed at the second end.

Illustratively, the slag tapping hole is arranged at the second end.

Illustratively, the kiln body is arranged to be inclined from the first end to the second end.

Illustratively, the kiln body is configured to be flipped about an axis.

According to the utility model discloses a gasification pyrolysis rotary kiln sets up the feed inlet in the first end of rotary kiln, the second end sets up a wind gap, make the opposite direction that a wind and material got into, make material combustion in-process and a wind misce bene, the material is close to the second end more, oxygen is abundant more, make the burning thoroughly more, set up the secondary wind gap simultaneously in first end, gaseous supplementary oxygen to the pyrolysis production of material in the rotary kiln, thereby can use the gas that the pyrolysis produced as fuel, make the flue gas reach corresponding temperature when having saved the fuel use amount.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.

In the drawings:

fig. 1 is a schematic structural view of a gasification pyrolysis rotary kiln according to an embodiment of the present invention.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In order to thoroughly understand the present invention, a detailed description will be given in the following description to illustrate the gasification pyrolysis rotary kiln of the present invention. It is apparent that the practice of the invention is not limited to the specific details familiar to those skilled in the art of waste treatment. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.

It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same elements are denoted by the same reference numerals, and thus the description thereof will be omitted.

In order to solve the problems in the prior art, the utility model provides a gasification pyrolysis rotary kiln, include:

a kiln body;

the feeding hole is formed in the first end of the kiln body;

And the first end is also provided with a secondary air port for supplementing oxygen to the gas generated after the pyrolysis of the material entering the rotary kiln from the feeding hole.

The gasification pyrolysis rotary kiln of the present invention is schematically described below with reference to fig. 1, wherein fig. 1 is a schematic structural diagram of the gasification pyrolysis rotary kiln according to an embodiment of the present invention.

Referring to fig. 1, a gasification pyrolysis rotary kiln according to an embodiment of the present invention includes a kiln body 1, a feeding port 2 is disposed at a first end of the kiln body 1, and the feeding port 2 is used for feeding materials into the rotary kiln body 1.

The material may illustratively be waste that has undergone a prior treatment such as drying, crushing, etc.

Illustratively, the kiln body 1 of the rotary kiln comprises a cylinder body, a heat insulation layer and a furnace lining, wherein the furnace lining is fixed on the cylinder body through a refractory brick by an anchoring piece and is formed by pouring through a pouring material. Illustratively, the rotary kiln body 1 is turned around an axis.

The garbage waste materials after being treated by drying, crushing and the like in the earlier stage enter the rotary kiln barrel, and under the condition that the kiln body 1 is overturned around the axis, the materials move from the end of the feeding port to the other end inside the kiln body and are combusted in the kiln body after the burner is started.

With continuing reference to fig. 1, the rotary kiln for gasification pyrolysis further comprises a primary tuyere 3 provided at a second end of the kiln body 1. Primary air introduced into the kiln body 1 from the primary air port 3 is used to supply oxygen required for incineration of garbage, wherein the first end is opposite to the second end. The first end of the rotary kiln is provided with a feeding hole, the second end of the rotary kiln is provided with a primary air port, so that the direction of primary air entering the rotary kiln is opposite to that of the material, and the closer the material is to the second end, the more sufficient the oxygen is, and the more thorough the combustion is.

Exemplarily, as shown in fig. 1, a burner 5 is further disposed at the second end of the kiln body 1, wherein after the material enters the kiln body 1 from the feed port 2 at the first end, the burner 5 is started, and the primary air introduced from the primary air port 3 is mixed with the material in the kiln body to fully combust the material, thereby improving the material combustion efficiency. Illustratively, as shown in fig. 1, the rotary kiln body 1 is obliquely arranged from a first end to a second end. The rotary kiln body 1 is arranged to be inclined from the first end to the second end, so that the material entering from the feeding hole 2 at the first end slides downwards along the inclined direction of the rotary kiln body 1 to move to the primary air inlet end, and the material is prevented from being accumulated at the feeding hole 2. Illustratively, the kiln body 1 of the rotary kiln is turned around an axis to promote uniform mixing of the material and the overfire air.

Illustratively, as shown in fig. 1, a slag outlet 6 is further provided at the second end of the kiln body 1, through which the residue after combustion of the waste material is discharged.

With continued reference to fig. 1, the rotary kiln for gasification and pyrolysis according to the present invention further comprises a secondary air port 4 disposed at the first end of the kiln body 1. After the materials enter the rotary kiln, one part of the materials are mixed with primary air and are combusted under the action of the combustor, so that the temperature in the kiln body rises, one part of the materials are cracked along with the rise of the temperature in the kiln body to form gas, and the cracked gas is mixed with secondary air supplemented by a secondary air port, so that the gas generated by pyrolysis is used as fuel, and the fuel usage amount is saved while the flue gas reaches corresponding temperature.

Exemplarily, the secondary tuyere 4 is provided as a slit at the first end. In the process of building the rotary kiln body, a certain gap is arranged, so that secondary air is introduced from the gap in the operation process of the rotary kiln, an additional secondary air inlet can be avoided, and the structural arrangement of the rotary kiln body is simplified.

Exemplarily, as shown in fig. 1, the gasification pyrolysis rotary kiln according to the present invention further includes a second combustion chamber disposed at the first section of the kiln body 1. The gas generated by material pyrolysis is mixed with secondary air supplemented by the secondary air, and the mixture further enters a secondary combustion chamber for combustion so as to further utilize the heat of combustion and effectively improve the efficiency of waste incineration power generation.

To sum up, according to the utility model discloses a gasification pyrolysis rotary kiln sets up the feed inlet in the first end of rotary kiln, the second end sets up a wind gap, make the opposite direction that a wind and material got into, make material combustion in-process and a wind misce bene, the material is close to the second end more, oxygen is abundant more, make the burning thoroughly more, set up the secondary wind gap simultaneously in first end, gaseous supplementary oxygen to the pyrolysis production of material in the rotary kiln, thereby can use the gas that the pyrolysis produced as fuel, make the flue gas reach corresponding temperature when having saved the fuel use amount.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A rotary kiln for gasification pyrolysis, comprising:

a kiln body;

the feeding hole is formed in the first end of the kiln body;

2. The rotary gasification pyrolysis kiln as recited in claim 1, wherein the secondary tuyere comprises a kiln slot provided at the first end.

3. The rotary kiln for gasification pyrolysis according to claim 1, further comprising a secondary combustion chamber connected to the first end, wherein gas generated by pyrolysis of the material introduced into the kiln body from the feed inlet is introduced into the secondary combustion chamber.

4. The rotary gasification pyrolysis kiln as recited in claim 1, further comprising a burner disposed at the second end.

5. The rotary gasification pyrolysis kiln as recited in claim 1, further comprising a tap hole provided at the second end.

6. The gasification pyrolysis rotary kiln as recited in claim 1, wherein the kiln body is disposed to be inclined from the first end to the second end.

7. The gasification pyrolysis rotary kiln as recited in claim 1, wherein the kiln body is configured to turn around an axis.