Radiant gasification incinerator

Abstract

The application discloses a radiation type gasification incinerator, which comprises an incinerator body, a treatment area for drying and burning garbage is arranged in the incinerator body, and a plurality of reciprocating grates are arranged in the treatment area in sequence along a garbage transmission direction; each reciprocating grate is matched with a plurality of air distribution chambers; each air distribution chamber is arranged side by side along a direction perpendicular to the garbage transmission direction and is in communication with each part of the reciprocating grate respectively; each air distribution chamber is divided into an oxygen-rich air distribution chamber and an oxygen-deficient air distribution chamber and is arranged staggeredly along the side-by-side direction; the excess air coefficient of the air distributed by the oxygen-rich air distribution chamber is greater than the excess air coefficient of the air distributed by the oxygen-deficient air distribution chamber; garbage on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber is subjected to high-temperature radiation of garbage on the reciprocating grate corresponding to the oxygen-rich air distribution chamber, a gasification reaction occurs, a reducing atmosphere is generated, the original concentration of pollutants such as NOX is effectively reduced, and the pollutant removal efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of incinerator equipment, in particular to a radiation type gasification incinerator. BACKGROUND

[0002] In the prior art, garbage enters from the feeding port, sequentially passes through the drying section grate, the combustion section grate and the burnout section grate, and completes drying, combustion and burnout, and the burned-out slag is discharged from the slag discharge port. Primary air passes through the grates from each air chamber to complete drying and combustion of the garbage, and the formed flue gas enters a flue, and then enters a subsequent utilization and treatment process. The prior art incinerator has a traditional air distribution mode, i.e., the air distribution ratios of the drying section, the combustion section and the burnout section are different, but the air distribution is consistent in each column of the drying section, and the air distribution is the same between columns in the combustion section and the burnout section. Thus, the air distribution of the prior art incinerator is consistent along the width direction of the grate, and in the case of garbage classification, the combustion flame temperature is high and coking is easy to occur. Moreover, the air distribution is sufficient, and the concentration of pollutants such as NOX is high, and the original concentration is generally higher than 200 mg / Nm 3 . SUMMARY

[0003] The present application aims to provide a radiation type gasification incinerator to solve the problems of the prior art, and the garbage on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber is subjected to high-temperature radiation from the garbage on the reciprocating grate corresponding to the oxygen-rich air distribution chamber, a gasification reaction occurs, a reducing atmosphere is generated, the original concentration of pollutants such as NOX is effectively reduced, and the pollutant removal efficiency is improved.

[0004] To achieve the above-mentioned purpose, the present application provides the following solution: the present application provides a radiation type gasification incinerator, which comprises an incinerator body, the incinerator body is provided with a treatment zone for drying and combustion of garbage, the treatment zone is provided with a plurality of reciprocating grates arranged in sequence along the garbage transmission direction, each reciprocating grate is matched with a plurality of air distribution chambers, each air distribution chamber is arranged side by side along a direction perpendicular to the garbage transmission direction and is in communication with each part of the reciprocating grate, each air distribution chamber is divided into an oxygen-rich air distribution chamber and an oxygen-deficient air distribution chamber and is arranged staggered along the side-by-side direction, and the excess air coefficient of the air distributed by the oxygen-rich air distribution chamber is greater than the excess air coefficient of the air distributed by the oxygen-deficient air distribution chamber.

[0005] Preferably, the excess air coefficient of the total air distributed by each oxygen-rich air distribution chamber corresponding to each reciprocating grate of each section is between 0.9 and 1.5, the excess air coefficient of the total air distributed by each oxygen-deficient air distribution chamber corresponding to each reciprocating grate of each section is between 0.2 and 0.9, and the excess air coefficient of the air distributed by all the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers is not less than 1.1.

[0006] Preferably, each of the oxygen-rich air distribution chambers corresponding to each of the reciprocating grates is arranged in the same row, and each of the oxygen-deficient air distribution chambers corresponding to each of the reciprocating grates is arranged in the same row.

[0007] Preferably, the outlets of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers matched with the same reciprocating grate are arranged in abutment, and the sum of the widths of all the outlets in the direction perpendicular to the direction of garbage conveying matches the width of the reciprocating grate.

[0008] Preferably, the length of the outlets of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers in the direction of garbage conveying matches the length of the corresponding reciprocating grate.

[0009] Preferably, the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers are both in a conical structure, and the radial cross section gradually decreases from bottom to top, and the bottom of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers is communicated with a primary air pipeline.

[0010] Preferably, the primary air pipeline is provided with a flow meter for measuring the air flow.

[0011] Preferably, two rows of the oxygen-rich air distribution chambers and one row of the oxygen-deficient air distribution chambers matched with the same reciprocating grate are arranged, and the oxygen-deficient air distribution chamber is located between the two oxygen-rich air distribution chambers.

[0012] Preferably, the incinerator body is provided with a feeding area located on the feeding side of the treatment area, the top of the feeding area is provided with a feeding port, the feeding port is matched with a pusher for pushing garbage into the treatment area, and the pusher is located on the side of the feeding port away from the treatment area in the direction of garbage conveying.

[0013] Preferably, each of the reciprocating grates is divided into a drying section grate, a combustion section grate and a burnout section grate, the drying section grate, the combustion section grate and the burnout section grate are gradually lowered in the direction of garbage conveying, and the transmission end of the burnout section grate is provided with a slag discharge port.

[0014] The present application has the following technical effects relative to the prior art:

[0015] By distributing air along the width of the reciprocating grate, and setting up oxygen-enriched and oxygen-deficient air distribution chambers to supply air to the grate, the waste on the reciprocating grate corresponding to the oxygen-enriched air distribution chamber burns at a high temperature. This high-temperature flame has a strong radiating effect on the waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber. Under this radiating effect, the waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber undergoes a gasification reaction, producing a reducing atmosphere (CH4, CO, NH3), which can effectively control the incinerator temperature and the initial concentration of pollutants such as NOx. Simultaneously, the waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber reacts at a lower temperature, effectively reducing the overall incinerator temperature and controlling coking. Furthermore, because the combustion processes of the waste corresponding to the oxygen-enriched and oxygen-deficient air distribution chambers are different, the pollutant release peaks are staggered in time and space, which can significantly homogenize pollutant fluctuations and improve pollutant removal efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Fig. 1 This is a front view of the overall structure of the present invention;

[0018] Fig. 2 This is a top view of the overall structure of the present invention;

[0019] Among them, 1-feeding area, 2-pusher, 3-air distribution chamber, 4-primary air duct, 5-drying section grate, 6-combustion section grate, 7-burnout section grate, 8-slag discharge port, 9-oxygen-enriched air distribution chamber, 10-oxygen-deficient air distribution chamber. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The purpose of this invention is to provide a radiant gasification incinerator to solve the problems existing in the prior art. The waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber is subjected to high-temperature radiation from the waste on the reciprocating grate corresponding to the oxygen-enriched air distribution chamber, which causes a gasification reaction and generates a reducing atmosphere, effectively reducing the original concentration of pollutants such as NOx and improving the pollutant removal efficiency.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figs. 1-2 As shown, this embodiment provides a radiant gasification incinerator, including an incinerator body. The incinerator body has a processing zone for drying and burning waste. The processing zone has several reciprocating grates arranged sequentially along the waste conveying direction. Each reciprocating grate is equipped with several air distribution chambers 3. Each air distribution chamber 3 is arranged side by side perpendicular to the waste conveying direction and is connected to each part of the reciprocating grate. Each air distribution chamber 3 is divided into an oxygen-enriched air distribution chamber 9 and an oxygen-deficient air distribution chamber 10, which are staggered along their side-by-side direction. The excess air coefficient of the air distributed in the oxygen-enriched air distribution chamber 9 is greater than the excess air coefficient of the air distributed in the oxygen-deficient air distribution chamber 10. By distributing air along the width of the reciprocating grate, and setting up oxygen-enriched air distribution chamber 9 and oxygen-deficient air distribution chamber 10 to supply air to the grate, the waste on the reciprocating grate corresponding to the oxygen-enriched air distribution chamber 3 burns at a high temperature. The high-temperature flame has a strong radiating effect on the waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber 10. Under the radiation effect, the waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber 10 undergoes a gasification reaction, producing a reducing atmosphere (CH4, CO, NH3), which can effectively control the incinerator temperature and the original concentration of pollutants such as NOx. At the same time, the waste on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber 10 reacts at a low temperature, effectively reducing the overall temperature of the incinerator and controlling coking. In addition, because the combustion processes of the waste corresponding to the oxygen-enriched air distribution chamber 3 and the oxygen-deficient air distribution chamber 10 are not the same, the pollutant release peaks are staggered in time and space, which can significantly homogenize pollutant fluctuations and improve pollutant removal efficiency.

[0024] In a preferred embodiment, the excess air coefficient of the total air distribution in each oxygen-enriched air distribution chamber 9 corresponding to each reciprocating grate is between 0.9 and 1.5, the excess air coefficient of the total air distribution in each oxygen-deficient air distribution chamber 10 corresponding to each reciprocating grate is between 0.2 and 0.9, and the combined excess air coefficient of all the air distributions in the oxygen-enriched air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 is not less than 1.1.

[0025] Furthermore, the oxygen-enriched air distribution chambers 9 corresponding to each reciprocating grate are arranged in the same row, and the oxygen-deficient air distribution chambers 10 corresponding to each reciprocating grate are arranged in the same row, so as to ensure that the garbage combustion between two adjacent reciprocating grates in the incinerator body will not affect each other. That is, it avoids the garbage corresponding to the oxygen-enriched air distribution chamber 3 and the oxygen-deficient air distribution chamber 10 from being close to each other during combustion, which would cause the peak values ​​of pollutant release to be staggered in time and space.

[0026] Moreover, the oxygen-rich air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 are arranged in close contact with the outlet of the same reciprocating grate, and the width sum of all the outlets in the direction perpendicular to the garbage conveying direction matches the width of the reciprocating grate, and preferably the length of the outlet of the oxygen-rich air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 in the garbage conveying direction matches the length of the corresponding reciprocating grate, so as to ensure sufficient air distribution for the entire reciprocating grate.

[0027] Further, the oxygen-rich air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 are both in a conical structure, and the radial cross section gradually decreases from bottom to top, and the bottom of the oxygen-rich air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 is communicated with the primary air pipeline 4, and the oxygen-rich air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 are air-distributed through the primary air pipeline 4, and since the oxygen-rich air distribution chamber 9 and the oxygen-deficient air distribution chamber 10 are arranged in a conical structure, the air volume flowing out of the primary air pipeline 4 is uniformized, ensuring the uniformity of the air supply for the reciprocating grate. And preferably, the primary air pipeline 4 is provided with a flow meter for measuring the air flow, so as to adaptively adjust the air volume entering the incinerator body.

[0028] As a preferred embodiment of the present application, two rows of oxygen-rich air distribution chambers 9 and one row of oxygen-deficient air distribution chambers 10 are matched with the same reciprocating grate, and the oxygen-deficient air distribution chamber 10 is located between the two oxygen-rich air distribution chambers 9, and the heat generated by the garbage combustion corresponding to the two rows of oxygen-rich air distribution chambers 9 is sufficient to radiate the garbage corresponding to the oxygen-deficient air distribution chamber 10.

[0029] Among them, the incinerator body is provided with an inlet area 1 located on the inlet side of the treatment area, and the top of the inlet area 1 is provided with an inlet port, and the inlet port is matched with a pusher 2 for pushing the garbage into the treatment area, and the pusher 2 is located on the side away from the treatment area of the inlet port in the garbage conveying direction, so as to push the garbage through the pusher 2, and control the amount of garbage in real time.

[0030] Further, each reciprocating grate is divided into a drying section grate 5, a combustion section grate 6 and a burnout section grate 7, which gradually descend along the direction of garbage conveying, and the transmission end of the burnout section grate 7 is provided with a slag discharge port 8, and the garbage is sequentially dried, combusted and burned out through the drying section grate 5, the combustion section grate 6 and the burnout section grate 7, so as to ensure the effect of garbage treatment, and then discharge through the slag discharge port 8.

[0031] The adaptive changes according to actual needs are within the protection scope of the present application.

[0032] It is apparent that a person skilled in the art can, without departing from the scope of the application, make many modifications to the details of the above-described exemplary embodiments of the application. The application is therefore not limited to the details given hereinabove but can be implemented in other forms without departing from the spirit or essential characteristic of the application. The embodiments shall therefore be considered in all respects as illustrative and not restrictive; the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims shall be considered to limit the scope of the claims in question to the corresponding parts depicted in the figures of the application.

[0033] The above examples are illustrative of the principles and embodiments of the application. They are not meant to limit the scope of the application. The application is therefore not to be restricted to details given hereinabove, but can be carried out in other ways within the scope of the application.

Claims

1. A radiant gasification incinerator, characterized by, The incinerator body is provided with a treatment area for drying and burning garbage, and the treatment area is provided with a plurality of reciprocating grates arranged in sequence along the garbage transmission direction, each of the reciprocating grates is matched with a plurality of air distribution chambers, each of the air distribution chambers is arranged side by side along the direction perpendicular to the garbage transmission direction and is in communication with each part of the reciprocating grate respectively, each of the air distribution chambers is divided into an oxygen-rich air distribution chamber and an oxygen-deficient air distribution chamber, and is staggered along the direction of the side by side, the excess air ratio of the air distributed by the oxygen-rich air distribution chamber is greater than the excess air ratio of the air distributed by the oxygen-deficient air distribution chamber; The oxygen-rich air distribution chamber and the oxygen-deficient air distribution chamber are arranged to supply air to the reciprocating grate, and the temperature of the garbage burning on the reciprocating grate corresponding to the oxygen-rich air distribution chamber is high, and the high-temperature flame has a radiation effect on the garbage on the reciprocating grate corresponding to the oxygen-deficient air distribution chamber.

2. The radiant gasification incinerator according to claim 1, characterized by, The excess air ratio of the total air distributed by each of the oxygen-rich air distribution chambers corresponding to each of the reciprocating grates is between 0.9 and 1.5, the excess air ratio of the total air distributed by each of the oxygen-deficient air distribution chambers corresponding to each of the reciprocating grates is between 0.2 and 0.9, and the excess air ratio of the air distributed by all of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers is not less than 1.

1.

3. The radiant gasification incinerator according to claim 1 or 2, characterized in that, Each of the oxygen-rich air distribution chambers corresponding to each of the reciprocating grates is arranged in the same row, and each of the oxygen-deficient air distribution chambers corresponding to each of the reciprocating grates is arranged in the same row.

4. The radiant gasification incinerator according to claim 3, characterized in that, The outlets of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers corresponding to the same reciprocating grate are arranged in abutment, and the total width of all the outlets along the direction perpendicular to the garbage transmission direction matches the width of the reciprocating grate.

5. The radiant gasification incinerator according to claim 4, characterized in that, The length of the outlets of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers along the garbage transmission direction matches the length of the corresponding reciprocating grate.

6. The radiant gasification incinerator according to claim 5, characterized in that, The oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers are conical structures, and their radial cross sections gradually decrease from bottom to top, and the bottom of the oxygen-rich air distribution chambers and the oxygen-deficient air distribution chambers is connected with a primary air pipeline.

7. The radiant gasification incinerator according to claim 6, characterized in that, The primary air pipeline is provided with a flow meter for measuring air flow.

8. The radiant gasification incinerator according to claim 7, characterized in that, The same reciprocating grate is matched with two rows of oxygen-rich air distribution chambers and one row of oxygen-deficient air distribution chambers, and the oxygen-deficient air distribution chamber is located between the two oxygen-rich air distribution chambers.

9. The radiant gasification incinerator according to claim 8, characterized in that, The incinerator body is provided with an inlet area located on the inlet side of the treatment area, the top of the inlet area is provided with an inlet port, the inlet port is matched with a pusher for pushing garbage into the treatment area, and the pusher is located on the side of the inlet port away from the treatment area along the garbage transmission direction.

10. The radiant gasification incinerator according to claim 9, characterized in that, Each of the reciprocating grates is divided into a drying section grate, a combustion section grate and a burnout section grate, the drying section grate, the combustion section grate and the burnout section grate gradually descend along the garbage transmission direction, and the transmission end of the burnout section grate is provided with a slag discharge port.

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