CN210601654U

CN210601654U - VOC waste gas incinerator

Info

Publication number: CN210601654U
Application number: CN201920796836.5U
Authority: CN
Inventors: 周高亮; 杨一博; 王春洪; 綦麟; 李健
Original assignee: Wantai Suzhou Environmental Technology Co ltd
Current assignee: Wantai Suzhou Environmental Technology Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-05-22
Anticipated expiration: 2029-05-30

Abstract

The utility model provides a VOC waste gas burns burning furnace, include: the device comprises a furnace body, a combustion chamber, a heat accumulator and a combustor; the furnace body comprises an outer furnace body and an inner furnace body, the inner furnace body is of a hollow cylindrical structure, and the heat accumulator is laid on the inner wall of the inner furnace body to form the combustion chamber; the side wall of the inner furnace body is of a porous structure, the outer furnace body covers the outer side of the inner furnace body, an air cavity is formed between the inner wall of the outer furnace body and the outer wall of the inner furnace body, the outer furnace body is provided with an air inlet, and external air enters the air cavity through the air inlet, so that an air film cooling layer is formed on the porous side wall of the inner furnace body; the burner is arranged at one end of the furnace body, the gas outlet is arranged at the other end of the furnace body, and external VOC waste gas enters the combustion chamber through the gas inlet of the burner and is discharged from the gas outlet after being burned. The utility model discloses can improve and burn heat accumulation ability and the combustion efficiency that burns burning furnace.

Description

VOC waste gas incinerator

Technical Field

The utility model relates to a waste gas treatment technical field especially relates to a VOC waste gas burns burning furnace.

Background

Volatile Organic Compounds (VOCs) are common pollutants emitted from petroleum, chemical and Organic solvent-using sites. Xylene, toluene, methyl ethyl ketone, halogen compounds and the like in VOC waste gas belong to toxic and pungent odor gas, and part of the toxic and pungent odor gas is listed as carcinogen, so that the direct contact of the toxic and pungent odor gas can cause harm to human health. The VOC exhaust gas, if discharged directly without treatment, can pollute the environment.

For toxic and harmful VOCs which do not need to be recycled or have high recycling difficulty, incineration is the most suitable treatment technology and method. The basic principle is as follows: the VOC waste gas undergoes an oxidation reaction with O2 to produce CO2 and H2O. However, the existing VOC incinerator has the following disadvantages: (1) the VOC waste gas has large heat value change due to component fluctuation, when the VOC waste gas has low concentration, the heat productivity per unit volume is low, the flame temperature is low, the flame propagation speed is slow, and in addition, the pressure change can cause unstable states such as fire extinguishment and the like to occur in the combustion, so that the combustion is difficult to be complete. (2) Secondly, the VOC gas amount is fluctuant, and when a conventional single burner is used, the fire is extinguished in large flow, and the tempering is generated in small flow, so that the combustion reaction is not facilitated. (3) The inner layer of the conventional incinerator adopts a refractory brick structure, and the building, anchoring and baking of the refractory bricks are very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model provides a VOC waste gas burns burning furnace solves current VOC and burns burning furnace and has the problem that combustion efficiency is low, energy resource consumption is big, can improve the heat accumulation ability and the combustion efficiency who burns burning furnace.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a VOC waste gas incinerator, comprising: the device comprises a furnace body, a combustion chamber, a heat accumulator and a combustor; the furnace body comprises an outer furnace body and an inner furnace body; the inner furnace body is of a hollow structure and forms the combustion chamber, and one or more heat accumulators are laid on the inner wall of the inner furnace body.

Preferably, at least part of the side wall of the inner furnace body is of a porous structure, the outer furnace body covers the outside of the inner furnace body, an air cavity is formed between the inner wall of the outer furnace body and the outer wall of the inner furnace body, the outer furnace body is provided with an air inlet, and when VOC waste gas is combusted in the combustion chamber, external air enters the air cavity through the air inlet, so that a porous air film cooling layer is formed on the side wall of the inner furnace body.

Preferably, one end of the furnace body is provided with the burner, the other end of the furnace body is provided with an air outlet, and external VOC waste gas enters the combustion chamber through the air inlet of the burner and is discharged from the air outlet after being incinerated.

Preferably, the combustion chamber is provided with a temperature measuring point, and a temperature sensor is arranged, so as to measure the combustion temperature in the combustion chamber.

Preferably, the method further comprises the following steps: the ignition burner comprises an igniter, an auxiliary fuel gas channel and an air channel, and the ignition burner feeds auxiliary fuel and air into the combustion chamber for combustion according to a set proportion through the auxiliary fuel gas channel and the air channel.

Preferably, the combustor anterior segment sets up a plurality of nozzles, and every nozzle all includes VOC exhaust gas channel and air channel for the operation number of nozzle is confirmed according to the combustion temperature in VOC tolerance and the combustion chamber to the staged combustion.

Preferably, the burner is a Y-burner.

Preferably, the number of the front-end burners of the burner is the same as the number of the heat storage bodies.

Preferably, the combustion chamber is provided with an observation port for observing the combustion flame condition in the furnace and a point inspection door for point inspection and maintenance of equipment in the furnace.

Preferably, the combustion chamber is divided into a plurality of chambers by laying the heat storage body in the inner furnace body, and the gas flow direction of the combustion chamber is controlled so that the combustion gas sufficiently absorbs and exchanges heat in each chamber.

The utility model provides a VOC waste gas burns burning furnace, through laying the heat accumulator in the internal furnace, not only can the heat accumulation, can also produce the high temperature backward flow, improve waste gas root temperature, do benefit to the combustion reaction and burn up, guarantee the abolishing rate. The porous structure is arranged in the inner furnace body, so that an air film cooling layer is formed between the outer furnace body and the inner furnace body, the masonry, anchoring and baking of refractory bricks are avoided, and the service life of the incinerator is prolonged. The use of the Y-shaped staged burner solves the problems that the conventional single burner generates fire-off when the flow is large and backfire when the flow is small, which is not beneficial to combustion reaction.

The utility model discloses a VOC waste gas burns burning furnace has solved the low, the big problem of energy resource consumption of combustion efficiency that current VOC burns burning furnace existence, can improve the heat accumulation ability, combustion efficiency and the life who burns burning furnace. The utility model discloses a VOC waste gas incinerator can make VOC waste gas clearance more than 99.9%, and it is very few to generate NOx, is the flow variation big, the undulant VOC waste gas incineration disposal's of component splendid scheme.

Drawings

FIG. 1 is a schematic view of the structure of a VOC waste gas incinerator provided by the present invention.

Reference numerals

1 outer furnace body

2 inner furnace body

3 combustion chamber

4 burner

5 ignition burner

6 heat accumulator

7 air inlet

8 air outlet

9 temperature measuring point

10 Observation port

Detailed Description

In order to make those skilled in the art better understand the solution of the embodiments of the present invention, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings and the implementation manner.

Burn burning furnace to current VOC waste gas and have the problem that energy resource consumption is big, the utility model provides a VOC waste gas burns burning furnace is through laying the heat accumulator in the internal furnace to set up porous structure, make outer furnace body and interior furnace body form the air film cooling layer, and then burn VOC waste gas by the combustor. The problem of current VOC burn burning furnace have combustion efficiency low, energy resource consumption is big is solved, the heat storage capacity and the combustion efficiency that burn burning furnace are improved.

As shown in fig. 1, a VOC exhaust gas incinerator comprises: furnace body, combustion chamber 3, heat accumulator 6 and combustor 5. The furnace body includes outer furnace body 1, interior furnace body 2 is hollow structure, preferably hollow cylinder structure, interior furnace body 2 inner wall has been laid one or more regenerator 6 to form combustion chamber 3, interior furnace body 2 lateral wall is porous structure. The outer furnace body 1 covers the outer side of the inner furnace body 2, an air cavity is formed between the inner wall of the outer furnace body 1 and the outer wall of the inner furnace body 2, the outer furnace body 1 is provided with an air inlet 7, and external air enters the air cavity through the air inlet 7, so that an air film cooling layer is formed on the side wall of the inner furnace body 2 with multiple holes. One end of the furnace body is provided with the combustor 4, the other end of the furnace body is provided with an air outlet 8, and external VOC waste gas enters the combustion chamber through an air inlet of the combustor to be incinerated and then is discharged from the air outlet 8.

Specifically, one or more heat accumulators are paved inside the furnace body, the temperature of the combustion chamber is increased through the stored heat of the heat accumulators, the energy consumption is reduced, the waste gas is combusted more sufficiently, and the low-temperature combustion at 900 ℃ is kept in the furnace. The porous structure is arranged on the side wall of the inner furnace body, so that an air film cooling layer is formed in an air cavity formed between the inner furnace body and the outer furnace body, masonry, anchoring and furnace baking of refractory bricks are avoided, and the service life of the incinerator is prolonged. The heat accumulator can be made of refractory materials, such as ceramic fibers, is used for heating and storing heat in the furnace, can be made of ceramic fiber refractory bricks and fireproof cotton, and can be designed according to actual needs.

As shown in fig. 1, the combustion chamber is further provided with a temperature measuring point 9, and a temperature sensor penetrates the temperature measuring point 9 to measure the combustion temperature in the combustion chamber.

In practical application, in order to monitor the temperature of the combustion chamber in real time, temperature measuring points are arranged on the side walls of the inner furnace body and the outer furnace body, high-temperature resistant pipes can be adopted to sequentially penetrate through and be fixed on the inner furnace body and the outer furnace body, and the temperature detection device measures the temperature of the combustion chamber in real time through the high-temperature resistant pipes.

Further, still include: an ignition burner 5; the ignition burner 5 comprises an igniter, an auxiliary fuel gas channel and an air channel, and the ignition burner 5 sends auxiliary fuel and air into the combustion chamber for combustion according to a set proportion through the auxiliary fuel gas channel and the air channel.

Further, the ignition burner is telescopically controlled.

4 anterior segments of combustor set up a plurality of nozzles, and every nozzle all includes VOC exhaust gas channel and air duct for the operation number of nozzle is confirmed according to the combustion temperature in VOC tolerance and the combustion chamber to the staged combustion. The problem of tempering when the VOC waste gas flow is small can be avoided by staged combustion, and the problem of fire removal when the VOC waste gas flow is large can be avoided.

The burner is a Y-shaped burner.

The number of the front-end burners of the burner is the same as that of the heat accumulators.

Before VOC waste gas enters the combustion chamber, air is introduced between the outer furnace body and the inner furnace body to form air film cooling, auxiliary fuel and air are ignited through the ignition burner, the heat accumulator is heated and stored, the temperature of the combustion chamber is gradually heated to reach a set temperature threshold, and then the VOC waste gas is introduced for incineration. The heat accumulator can not only accumulate heat, but also generate high-temperature reflux, improve the temperature of the root part of the waste gas, facilitate combustion reaction and burnout and ensure the destruction rate.

As shown in fig. 1, the combustion chamber 3 is provided with an observation port 10 for observing the condition of combustion flame in the furnace and a point inspection door (not shown) for point inspection and maintenance access of equipment in the furnace. The observation port is often pre-embedded with a transparent high temperature resistant glass window so that inspectors can observe the flame state through the glass window in real time. Meanwhile, when the incinerator is overhauled, an maintainer can timely clean and maintain the incinerator through the point inspection door.

The combustion chamber is divided into a plurality of chambers in the inner furnace body by laying the heat accumulator, and the gas flow direction of the combustion chamber is controlled, so that the combustion gas can fully absorb heat and exchange heat in each chamber.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims

1. A VOC waste gas incinerator, comprising: the device comprises a furnace body, a combustion chamber, a heat accumulator and a combustor;

the furnace body comprises an outer furnace body and an inner furnace body;

the inner furnace body is of a hollow structure and forms the combustion chamber, and one or more heat accumulators are laid on the inner wall of the inner furnace body.

2. A VOC exhaust gas incinerator according to claim 1, wherein the inner furnace side wall is at least partially of a porous structure; the outer furnace body covers the outer side of the inner furnace body, an air cavity is formed between the inner wall of the outer furnace body and the outer wall of the inner furnace body, the outer furnace body is provided with an air inlet, and external air enters the air cavity through the air inlet so that an air film cooling layer is formed on the side wall of the inner furnace body.

3. A VOC exhaust gas incinerator according to claim 1 or 2 wherein said burner is provided at one end of said furnace body and an air outlet is provided at the other end of said furnace body, and external VOC exhaust gas is discharged from said air outlet after entering said combustion chamber through an air inlet of said burner and incinerating therein.

4. A VOC exhaust gas incinerator according to claim 1 or 2 wherein the combustion chamber is provided with a temperature measuring point and a temperature sensor by which the combustion temperature in the combustion chamber is measured.

5. A VOC exhaust gas incinerator according to claim 1 or 2, further comprising: the ignition burner comprises an igniter, an auxiliary fuel gas channel and an air channel, and the ignition burner feeds auxiliary fuel and air into the combustion chamber for combustion according to a set proportion through the auxiliary fuel gas channel and the air channel.

6. A VOC exhaust gas incinerator according to claim 1 or 2 wherein the burner front section is provided with a plurality of burners each comprising a VOC exhaust gas passage and an air passage.

7. A VOC waste gas incinerator as claimed in claim 6 wherein said burner is a Y burner.

8. A VOC exhaust gas incinerator as claimed in claim 6 wherein the number of burners at the front end of said burner is the same as the number of said heat storage bodies.

9. A VOC exhaust gas incinerator as claimed in claim 7 wherein the number of burners at the front end of said burner is the same as the number of said heat storage bodies.

10. A VOC exhaust gas incinerator according to claim 1 or 2 wherein said combustion chamber is provided with observation ports for observing combustion flame conditions in the furnace and a check door for furnace equipment check and maintenance access.

11. A VOC exhaust gas incinerator according to claim 1 or 2 wherein the combustion chamber is divided into a plurality of chambers within the inner furnace body by laying down the heat storage body.