CN107906543B

CN107906543B - Tar disposal burner

Info

Publication number: CN107906543B
Application number: CN201711382648.XA
Authority: CN
Inventors: 刘付军
Original assignee: Nanjing Hardcore Technology Service Co ltd
Current assignee: Nanjing Hardcore Technology Service Co ltd
Priority date: 2017-12-20
Filing date: 2017-12-20
Publication date: 2024-04-12
Anticipated expiration: 2037-12-20
Also published as: CN107906543A

Abstract

The utility model provides a combustor is handled to heat accumulation formula tar, includes barrel, catalytic heat accumulation ball, catalytic net, gas pipeline, the outside parcel network structure of catalytic heat accumulation ball, catalytic net is located the barrel inside with the gas pipeline, and catalytic net upper portion links to each other with the gas pipeline lower part, and the gas pipeline runs through barrel upper portion and links to each other with the barrel external world, catalytic net lower part runs through the barrel and links to each other with the barrel external world, network structure constitutes with catalytic net for same tar schizolysis catalysis material, catalytic heat accumulation ball constitutes with tar schizolysis catalysis material. The invention has simple structure, but exquisite design, and can effectively utilize combustion heat to remove tar mixed in combustible gas.

Description

Tar disposal burner

Technical Field

The invention relates to combustion equipment, in particular to combustion equipment capable of treating tar in fuel gas.

Background

In the comprehensive gasification treatment of straw and similar processes, the produced combustible gas contains a certain amount of tar, and the tar is completely mixed with the combustible gas in a gaseous state in the state.

The tar is complex in components and difficult to treat, if tar is not treated, the tar is directly combusted, the tar cannot be decomposed, the tar is condensed into liquid state when being lower than 200 ℃ after being discharged, the liquid tar is in black thick liquid state and is easy to mix and gather with other ash and water, a subsequent air supply pipeline or a combustion tool is blocked, particles such as carbon black and the like can be generated when fine tar particles are combusted, the subsequent gas utilization equipment is greatly damaged, and black smoke is formed after the gas is discharged, so that pollution is caused.

The energy of tar accounts for about 10% of the total energy, and if the tar is directly discharged, the gasification efficiency of the comprehensive gasification treatment of the straw is reduced.

At present, the tar is treated in the following modes: physical separation method: firstly, converting tar from a gas state to a liquid state, separating the tar from the gas by a water washing or filtering method, and then treating the tar as waste, wherein the method wastes the energy of the tar on one hand, and the improper treatment of the tar can cause serious pollution to a catalytic cracking method on the other hand: after gasification, the combustible gas with tar enters a catalytic cracking device, at the moment, the temperature of the combustible gas with tar can be reduced to 600 ℃, an external heat source keeps the catalytic cracking device at 750 900 ℃, and the catalytic cracking of the tar reaches more than 99% under the action of a catalyst in the catalytic cracking device.

Disclosure of Invention

The invention provides a heat accumulating type tar disposal burner which has a simple structure and exquisite design, and can effectively utilize combustion heat to remove tar mixed in combustible gas.

The invention solves the problems presented by the background content through the following technical scheme: comprising the following steps: barrel, catalytic heat accumulation ball, catalytic net, gas pipeline, the outside parcel network structure of catalytic heat accumulation ball, catalytic net and gas pipeline are located the barrel inside, and catalytic net upper portion links to each other with gas pipeline lower part, and gas pipeline runs through barrel upper portion and links to each other with the barrel external world, catalytic net lower part runs through the barrel and links to each other with the barrel external world, network structure constitutes with catalytic net for same tar schizolysis catalytic material, catalytic heat accumulation pellet constitutes with tar schizolysis catalytic material.

And an air inlet is arranged at the top of the side edge of the cylinder body.

Refractory bricks are embedded in the cylinder, and heat insulation materials are wrapped outside the cylinder.

The bottom of the cylinder body is provided with an air inlet pipeline, one end of the air inlet pipeline is connected with the bottom of the cylinder body, and the other end of the air inlet pipeline is connected with the blower.

An ignition nozzle is arranged in the gas pipeline.

Drawings

Fig. 1 is a schematic diagram showing the front internal structure of a regenerative tar disposal burner according to an embodiment of the present invention.

Fig. 2 is a schematic top view of a thermal tar-disposal burner according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a catalytic heat storage ball according to an embodiment of the present invention.

Detailed Description

An embodiment of the present invention will be described in detail with reference to fig. 1, 2, and 3.

The embodiment solves the problems by adopting the following technical scheme: a regenerative tar disposal burner comprising: barrel 2, catalytic heat accumulation ball 3, catalytic net 4, gas pipeline 5, catalytic heat accumulation ball 3 regard as the matrix with SiO2, outside parcel network structure 9, catalytic net 4 is located the barrel inside with gas pipeline 5, and catalytic net 4 upper portion links to each other with gas pipeline 5 lower part, and gas pipeline 5 runs through barrel 2 upper portion and links to each other with barrel 2 external world, and catalytic net 4 lower part runs through barrel 2 and barrel 2 external world and links to each other, and network structure 9 is the same tar schizolysis catalytic material constitution with catalytic net 4.

The top of the side edge of the cylinder body 2 is provided with an air inlet 1.

The inside resistant firebrick that inlays of barrel on the one hand consolidates the barrel, prevents on the other hand that long-term high temperature operation from causing the damage to the barrel, and the outside parcel insulation material of barrel prevents energy leakage, and inside can't keep high temperature.

The bottom of the cylinder body 2 is provided with an air inlet pipeline 7, one end of the air inlet pipeline 7 is connected with the bottom of the cylinder body 2, and the other end is connected with a blower 8.

The combustible gas carrying tar is ignited when passing through the ignition device to generate heat, after the catalytic heat storage pellets are subjected to heat storage, the temperature in the cylinder is kept at 800 900 ℃, at the temperature, the combustible gas carrying the tar enters the cylinder and is contacted with the catalytic heat storage pellets, the catalytic heat storage pellets are tar composite catalysts taking SiO2 as a matrix, the tar can be catalyzed and cracked into combustible gas, the catalytic heat storage pellets are wrapped with a network structure of nickel-based materials, the catalytic network is made of nickel-based materials, the nickel-based materials are used as tar catalysts, the tar cracking can be effectively accelerated, the combustible gas carrying the tar is fully contacted with the catalytic heat storage pellets from top to bottom, then enters the catalytic network below, the tar is completely cracked into combustible gas, enters a gas pipeline through the catalytic network, is mixed with external air under the action of an air inlet pipeline and a blower, and is discharged after being ignited by the electric ignition device.

Claims

1. A tar disposal burner, characterized by: comprises a cylinder body, a catalytic heat storage ball, a catalytic net and a gas pipeline, wherein the catalytic heat storage ball is externally wrapped with a net structure, the catalytic net and the gas pipeline are positioned in the cylinder body, the upper part of the catalytic net is connected with the lower part of the gas pipeline, the gas pipeline penetrates through the upper part of the cylinder body and is connected with the outside of the cylinder body, the lower part of the catalytic net penetrates through the cylinder body and is connected with the outside of the cylinder body, the net structure and the catalytic net are formed by the same tar cracking catalytic material, the catalytic heat storage ball is formed by the tar cracking catalytic material,

an air inlet is arranged at the top of the side edge of the cylinder,

refractory bricks are embedded in the cylinder body, heat insulation materials are wrapped outside the cylinder body,

an air inlet pipeline is arranged at the bottom of the cylinder body, one end of the air inlet pipeline is connected with the bottom of the cylinder body, the other end of the air inlet pipeline is connected with a blower,

an ignition nozzle is arranged in the gas pipeline,

the combustible gas carrying tar is ignited when passing through the ignition device to generate heat, after the catalytic heat storage balls are subjected to heat storage, the temperature in the cylinder is kept at 800-900 ℃, at the temperature, the combustible gas carrying the tar enters the cylinder and is contacted with the catalytic heat storage balls, the catalytic heat storage balls are tar composite catalysts taking SiO2 as a matrix, the catalytic tar is cracked into combustible gas, the catalytic heat storage balls are wrapped with a network structure of nickel-based materials, the catalytic nets are made of nickel-based materials, the nickel-based materials are used as tar catalysts, the tar cracking can be accelerated, the combustible gas carrying the tar is contacted with the catalytic heat storage balls from top to bottom, then enters the catalytic nets below, the tar is completely cracked into the combustible gas, enters a gas pipeline through the catalytic nets, is mixed with external air under the action of an air inlet pipeline and an air blower, and is discharged after being ignited by the electric ignition device.