CN210772177U - Porous medium burner for removing tar in smoke - Google Patents

Abstract

The utility model belongs to environmental protection equipment, in particular to a porous medium burner which can remove tar in flue gas during low-temperature pyrolysis and gasification of garbage. The lower part of the main body shell is cylindrical, the upper part of the main body shell is inverted frustum-shaped, a metal mesh wire is embedded in the main body shell, an annular porous plate is arranged in the bottom surface of the main body shell, the porous plate is arranged above a small aluminum oxide circular tube, electronic ignition is arranged in a space communicated with the lower part in the main body shell at the middle of the small aluminum oxide circular tube, a gas channel and an air pipeline are correspondingly arranged in a middle inner cavity communicated with the lower part of the main body shell, a lower connecting flange is arranged on the lower end surface of the main body shell, a flue gas channel is arranged in the center of the main body shell above the central hole of the lower connecting flange, an upper cover is fixedly connected to the upper end surface. The method for treating tar has very good effect and no subsequent treatment. Simple structure, small occupied space and meeting the requirements of environmental protection and discharge.

Description

Porous medium burner for removing tar in smoke

Technical Field

The utility model belongs to environmental protection equipment, in particular to a porous medium burner which can remove tar in flue gas during low-temperature pyrolysis and gasification of garbage.

Background

The low-temperature pyrolysis gasification technology carries out thermal decomposition and gasification treatment on the domestic garbage in a low-oxygen environment, inhibits the generation of dioxin in an oxygen-deficient condition and reduces the pollution of the domestic garbage treatment on the domestic environment. However, the content of tar in the generated gasification flue gas is high, and the tar components are very complex and mainly come from secondary reaction. The tar can corrode equipment made of metal and plastic materials, and the tar and dust are combined together to form blocky substances which can block pipelines. The higher tar content in the gasification flue gas leads to lower gas calorific value and also to a lower gasification efficiency.

Disclosure of Invention

The utility model aims to overcome the technical insufficiency, provide a compact structure, make gaseous dispersion even, the porous medium combustor of getting rid of tar in the flue gas that environmental protection performance is good.

The technical proposal adopted by the utility model is that the porous medium burner for removing tar in flue gas comprises a main body shell, an upper cover, an upper connecting flange and a lower connecting flange, which is characterized in that the lower part is cylindrical, the upper part is a reversed frustum-shaped main body shell internally embedded with a metal mesh wire, an annular porous plate is arranged in the bottom surface of the main body shell, a plurality of annular porous plate through holes are arranged between the middle hole of the annular porous plate and the excircle edge of the annular porous plate, a plurality of small aluminum oxide round tubes are arranged above the annular porous plate and in the metal mesh wire, a porous plate is arranged above the small aluminum oxide round tubes, a plurality of porous plate through holes are arranged on the porous plate in a radiation shape, a plurality of small aluminum oxide balls are flush with the metal mesh wire in the main body shell, and an electronic ignition is arranged at the space communicated with the lower part in the main body shell at the middle of the, the lower surface of the main body shell is communicated with the middle inner cavity and correspondingly provided with a gas channel and an air pipeline, the lower end surface of the main body shell is provided with a lower connecting flange, the center of the main body shell above the central hole of the lower connecting flange is a flue gas channel, the upper end surface of the main body shell is fixedly connected with an upper cover through an upper connecting flange, the outer circumference of the upper cover is provided with an observation window, and a chlorine gas detection port is arranged at a smoke exhaust port at the top end of the upper cover.

The utility model has the advantages that: the device adopted by the porous medium burner for removing the tar in the flue gas has good effect on the method for treating the tar without subsequent treatment. Simple structure, small occupied space and meeting the requirements of environmental protection and discharge.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

FIG. 1 is a sectional view of a porous medium burner structure for removing tar from flue gas.

FIG. 2 is a structural view of the multi-well plate of FIG. 1.

FIG. 3 is a structural view of the annular multi-well plate of FIG. 1.

In the figure, 1-chlorine gas detection port; 2-covering the upper cover; 2-1-smoke outlet; 3-an observation window; 4-upper connecting flange; 5-a main body housing; 5-1-flue gas channel; 6-electronic ignition; 7-gas channel; 8-metal mesh; 9-alumina pellets; 10-a perforated plate; 10-1-perforated plate through-holes; 11-a ring-shaped perforated plate; 11-1-middle hole; 11-2-annular perforated plate through holes; 12-an air duct; 13-lower connecting flange; 14-alumina small round tube.

Detailed Description

In the embodiment, referring to the attached figures 1-3, the porous medium burner for removing tar in flue gas is characterized in that a metal mesh 8 is embedded in a main body shell 5 with a cylindrical lower part and an inverted frustum upper part, an annular porous plate 11 is arranged in the bottom surface of the main body shell 5, and a plurality of annular porous plate through holes 11-2 are formed between a middle hole 11-1 of the annular porous plate 11 and the outer circle edge of the annular porous plate 11. A plurality of small alumina tubes 14 are arranged above the annular porous plate 11 and in the metal mesh 8, and a porous plate 10 is arranged above the small alumina tubes 14. The perforated plate 10 is provided with a plurality of perforated plate through holes 10-1 in a radiation shape. A plurality of small alumina balls 9 are arranged above the porous plate 10 and flush with the metal mesh wires 8 in the main body shell 5, an electronic ignition 6 is arranged in the space where the middle of each small alumina ball 9 is communicated with the inner lower part of the main body shell 5, a flue gas channel 5-1 is arranged at the hollow part in the middle of the small alumina circular tube 14 below the main body shell 5 and above the central hole of the lower connecting flange 13 connected with the lower end of the main body shell 5, and a coal gas channel 7 and an air pipeline 12 are correspondingly connected at the flue gas channel 5-1 at the lower end of the main body shell 5. The upper end face of the main body shell 5 is fixedly connected with an upper cover 2 through an upper connecting flange 4, the outer circumference of the upper cover 2 is provided with an observation window 3, and the top end of the upper cover 2 is provided with a chlorine gas detection port 1.

The utility model discloses a use is: when the porous medium burner for removing tar in flue gas works, firstly, gas and air are introduced into the burner through the air pipeline 12 and the gas channel 7, the gas and the air become mixed gas below the annular porous plate 11, the gas below the burner is ignited through the electronic ignition 6, the burner is preheated for a period of time, then gasified flue gas is introduced through the flue gas channel 5-1, combustible gas, carbon monoxide, hydrogen and hydrocarbon in the gasified flue gas start to burn under the combustion supporting of the gas, so that the temperature of the small alumina circular tube 14 above the annular porous plate 11 and the small alumina balls 9 above the porous plate 10 reaches above 700 ℃, tar contained in the flue gas is catalytically pyrolyzed, when the temperature of the small alumina balls 9 reaches 1000 ℃, the tar contained in the flue gas is directly burned, and the flue gas is discharged from the smoke outlet 2-1 at the top end of the upper cover 2, the alumina pellets 9 can maintain the temperature in the burner and reduce the flow rate of the gasified flue gas, so that the gas is dispersed more uniformly.

Claims (1)

1. A porous medium burner for removing tar in flue gas comprises a main body shell (5), an upper cover (2), an upper connecting flange (4) and a lower connecting flange (13), and is characterized in that a metal mesh wire (8) is embedded in the main body shell (5) with a cylindrical lower part and an inverted frustum-shaped upper part, an annular porous plate (11) is arranged in the bottom surface of the main body shell (5), a plurality of annular porous plate through holes (11-2) are formed between a middle hole (11-1) of the annular porous plate (11) and the outer circle edge of the annular porous plate (11), a plurality of small aluminum oxide round tubes (14) are arranged above the annular porous plate (11) and in the metal mesh wire (8), a porous plate (10) is arranged above the small aluminum oxide round tubes (14), a plurality of porous plate through holes (10-1) are arranged on the porous plate (10) in a radiation shape, and a plurality of porous plate through holes (10-1) are, A plurality of small aluminum oxide balls (9) are arranged flush with a metal mesh (8) in a main body shell (5), the middle of each small aluminum oxide ball (9) is communicated with a space below the inside of the main body shell (5) to be provided with an electronic ignition device (6), a middle inner cavity communicated with the lower part of the main body shell (5) is correspondingly provided with a gas channel (7) and an air pipeline (12), the lower end face of the main body shell (5) is provided with a lower connecting flange (13), the center of the main body shell (5) above a central hole of the lower connecting flange (13) is a flue gas channel (5-1), the upper end face of the main body shell (5) is fixedly connected with an upper cover (2) through an upper connecting flange (4), the outer circumference of the upper cover (2) is provided with an observation window (3), and a chlorine gas detection port (1) is arranged at a smoke exhaust port (2-1.

Images