CN210004420U

CN210004420U - Zero leakage flameless thermal oxidizer

Info

Publication number: CN210004420U
Application number: CN201920204629.6U
Authority: CN
Inventors: 韦兰春; 陈汉苼
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-18
Filing date: 2019-02-18
Publication date: 2020-01-31
Anticipated expiration: 2029-02-18

Abstract

The utility model provides an zero leakage flameless thermal oxidizer, this zero leakage flameless thermal oxidizer includes the casing, main inlet manifold is connected with external flue gas source and stretches into inside the casing, a plurality of branch inlet manifold, the end of every in a plurality of branch inlet manifold communicates with main inlet manifold, another end is towards the bottom of casing, and every in a plurality of branch inlet manifold sets up perpendicularly relative to main inlet manifold, a plurality of heating device, a plurality of heating device sets up respectively on main inlet manifold and the inner wall of every in a plurality of branch inlet manifold, for heat the flue gas in main inlet manifold and every in a plurality of branch inlet manifold, and give vent to anger the pipeline, give vent to the gas pipeline and set up at the top of casing, this zero leakage flameless thermal oxidizer does not set up any movable part and valve , thereby guarantee that there is not leaked in the flue gas oxidation process, thereby improved the oxidation efficiency of flue gas.

Description

Zero leakage flameless thermal oxidizer

Technical Field

The utility model relates to a kinds of volatile organic compounds's processing apparatus, more specifically relates to kinds of zero leakage flameless thermal oxidizers.

Background

The disposal of VOC gases has attracted attention to , because harmful gases such as malodorous substances, Volatile Organic Compounds (VOC) and the like are generated in garbage burners, boilers, petrochemical enterprises and the like, and these harmful gases are likely to cause diseases such as respiratory system disorders after entering the body through the respiratory tract of a human.

The VOC gas is treated by using regenerative combustion devices and flameless regenerative combustion devices, wherein the regenerative combustion devices use flames to reduce the durability of the device, the concentration of the supplied harmful gas is different, and the diluted air and the harmful gas cannot be uniformly mixed, so that the calorific value is not constant, or steps are advanced to cause the thermal shock applied to the heat accumulator to be large.

In flameless oxidizer systems, ambient air and a secondary fuel are mixed (when the combustion value of the low concentration VOC is insufficient, the secondary fuel is added in the actual demand) based on different percentages of VOC present in the gaseous state, within the safe range of flammable LFL and lower explosion limit LEL, and heat is transferred to the gaseous mixture through a ceramic medium. The organic compound is subjected to proper residence time at high temperature, the temperature is raised to the combustion value of VOC combustible, and after the reaction temperature is reached, the organic compound in the VOC gas is oxidized and decomposed into harmless byproducts, carbon dioxide and water vapor, so that the aim of destroying the VOC can be fulfilled. The airflow is then discharged through the chimney.

However, since the conventional flameless thermal oxidizer has a plurality of moving parts and a valve for controlling a gas flow, etc., a leakage of flue gas is caused, thereby causing a problem of low VOC removal rate.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an kinds of zero leakage flameless thermal oxidizers, this zero leakage flameless thermal oxidizers includes:

a housing;

the main gas inlet pipeline is connected with an external flue gas source and extends into the shell;

a plurality of branch air inlet pipes, wherein ends of each branch air inlet pipes are communicated with the main air inlet pipe, another ends of the branch air inlet pipes face to the bottom of the shell, and each branch air inlet pipes are vertically arranged relative to the main air inlet pipe;

a plurality of th heating devices, a plurality of th heating devices being respectively provided on the inner wall of each of the main air intake duct and the plurality of branch air intake ducts for heating the flue gas in each of the main air intake duct and the plurality of branch air intake ducts, and

the air outlet pipeline is arranged at the top of the shell.

In embodiments, the zero-leakage flameless thermal oxidizer further comprises a thermal storage material filled in the bottom of the housing and surrounding the plurality of branch inlet pipes.

In embodiments, the thermal storage material is a random honeycomb thermal storage body and a monolithic honeycomb thermal storage body, wherein the monolithic honeycomb thermal storage body is disposed around the air outlets of the plurality of branch air inlet pipes, and the random honeycomb thermal storage body is disposed on the upper side of the monolithic honeycomb thermal storage body.

In embodiments, the plurality of heating devices are finned heat sinks.

In embodiments, each of the plurality of heating devices are disposed along the length of the main intake duct and the plurality of branch intake ducts.

In embodiments, multiple th heating devices are disposed in each of of the multiple branch intake ducts and the main intake duct.

In embodiments, the zero-leak flameless thermal oxidizer further comprises:

and the static mixer is arranged at the inlet of the main air inlet pipeline and is used for uniformly mixing the flue gas or atomizing and uniformly mixing the supplementary fuel and the flue gas.

In embodiments, the zero-leak flameless thermal oxidizer further comprises:

and the second heating device is arranged at the bottom of the shell.

In embodiments, the second heating device is an electric heater.

In embodiments, the zero-leak flameless thermal oxidizer further comprises:

and the heat bypass is arranged on the air outlet pipeline and used for dissipating heat to the outside of the shell when the temperature in the shell exceeds a preset threshold value.

In embodiments, the zero-leak flameless thermal oxidizer further comprises a manhole disposed on the outlet pipe.

The utility model discloses a do not set up any movable part and valve among the zero leak flameless thermal oxidizer to guarantee that the flue gas oxidation in-process does not leak, thereby improved the oxidation efficiency of flue gas.

Drawings

Fig. 1 is a schematic structural view of an exemplary embodiments of a zero-leak flameless thermal oxidizer according to the present invention (where the arrow direction is the flue gas flow direction).

Detailed Description

Illustrative, non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings, which illustrate a zero-leak flameless thermal oxidizer in accordance with the present invention at step .

Referring to fig. 1, the utility model discloses a zero leakage flameless thermal oxidizer includes casing 1, main admission line 2, a plurality of branch admission lines 3, a plurality of heating device (not shown in the figure) and pipeline 4 of giving vent to anger, and wherein a plurality of branch admission lines 3 and main admission line 2 intercommunication just all set up in casing 1, and a plurality of heating device set up respectively on a plurality of branch admission lines 3 and main admission line 2's inner wall, and pipeline 4 of giving vent to anger sets up the top at casing 1.

The main inlet pipe 2 is connected with an external flue gas source (volatile organic compounds (VOC)) and extends into the shell 1 to feed flue gas to be treated into the shell 1, a plurality of openings are arranged on the side wall of the main inlet pipe 2 to communicate with the plurality of branch inlet pipes 3, so that flue gas in the main inlet pipe 2 can be dispersed in different branch pipes to carry out oxidation reaction, meanwhile, the other ends of each of the plurality of branch inlet pipes 3 face the bottom of the common shell 1, so that flue gas flowing out of the plurality of branch inlet pipes 3 flows from the bottom of the shell 1 to the top of the shell 1, thereby releasing part of heat generated in oxidation reaction in the flowing process, in order to make the flue gas stay in the branch pipes as long as possible, the heat of the flue gas flowing out of the main inlet pipe 3 from the bottom of the shell 1 to the top of the shell 1 is provided in parallel to the main inlet pipe 2, namely, the heat of the plurality of branch inlet pipes 2 is provided in the main inlet pipe 2, the heat radiator is provided for heating the heat of the main inlet pipe 2, namely, the branch inlet pipe 2, the heat radiator is provided in the branch inlet pipe 2, the heat radiator is provided in the heat radiator 2, the heat radiator is provided in the heat radiator, which is provided in the heat radiator 2, the heat radiator, which is provided in the heat radiator, and the heat radiator, which is provided in the heat radiator, and is provided in the heat radiator, which is provided in the main inlet pipe 2, and is provided in the heat radiator, which is provided in the heat radiator, and the heat radiator, which is provided in the main inlet pipe 2, and is provided in the heat radiator, and.

As can be seen from the above description, the zero-leakage flameless thermal oxidizer of the present invention does not have the movable part or the reversing valve , so that the leakage problem caused by the flue gas treatment process can be avoided, and the VOC removal efficiency in the flue gas can be improved by steps on the basis of no flue gas leakage.

With continued reference to fig. 1, in embodiments of the present invention, the zero-leakage flameless thermal oxidizer further includes a thermal storage material 5 filled in the bottom of the housing 1 and disposed around the plurality of branch inlet pipes 3, the flue gas releases more and more energy in the form of heat as the reaction proceeds in the main inlet pipe 2 and the plurality of branch inlet pipes 3 flows out of the plurality of branch inlet pipes 3 with the reacted gas, in embodiments, the thermal storage material 5 is a monolithic honeycomb thermal storage body disposed around the outlets of the plurality of branch inlet pipes and a random honeycomb thermal storage body disposed on the upper side of the monolithic honeycomb thermal storage body, thus, by disposing the monolithic honeycomb thermal storage body around the periphery of the outlets of the plurality of branch inlet pipes 3, the gas flow can be guided to be uniformly dispersed through the channels of the honeycomb thermal storage body to the random honeycomb thermal storage body disposed on the upper side of the monolithic honeycomb thermal storage body, thereby avoiding that local high temperature of the local inlet pipes may damage the nitrogen oxide or portions of the nitrogen oxide, and thus, the thermal storage material may be a type capable of being easily used in the field as a thermal reactor, which may also be a thermal type capable of preventing thermal pollution of causing damage to the flue gas, and may be a thermal pollution to persons who may also be a thermal pollution in the field, and may be a thermal reactor of the field.

In the preferred embodiments, each of the multiple heating devices are disposed along the length of the main intake manifold 2 and the multiple branch intake manifolds 3, however, it will be understood by those skilled in the art that the multiple multiple heating devices may be disposed on the inner walls of the main intake manifold 2 and the multiple branch intake manifolds 3 in other ways, for example, along the cross-sectional direction of the manifolds, etc.

In embodiments, each of the branch air inlet pipes 3 and the main air inlet pipe 2 are provided with a plurality of heating devices, so as to achieve better uniform heating effect on the smoke in the pipes.

In embodiments, in order to mix the flue gas entering the duct uniformly, or in case of need of adding supplementary fuel (for example, the concentration of the volatile organic compound flue gas is low), make the supplementary fuel and the volatile organic compound mix more uniformly, the utility model discloses a zero-leakage flameless thermal oxidizer also comprises a static mixer 6. the static mixer 6 is arranged at the inlet of the main air inlet duct 2, and changes the flow state of the flue gas in the duct by using the mixing unit body fixed in the duct, so as to achieve the purpose of good dispersion and sufficient mixing between different flue gases.

In the embodiments of the present invention, the zero leakage flameless thermal oxidizer further comprises a second heating device 7, in the case of cold start and low VOC concentration, the provision of the second heating device 7 at the bottom of the housing 1 can provide additional heat for the oxidation reaction of the VOC to maintain the VOC removal efficiency.

Preferably, the zero-leakage flameless thermal oxidizer further comprises a thermal bypass 8 disposed on the outlet pipe 4. Thus, when the amount of heat released by the VOC oxidation reaction inside the housing 1 is so high as to affect the service life of the housing 1, the thermal bypass 8 can be opened to release a part of the heat. The temperature threshold within the housing 1 that requires heat dissipation using the thermal bypass 8 may be preset by the operator and an appropriate alarm mechanism may be employed to alert the operator to open the thermal bypass 8 or to automatically control the opening/closing of the thermal bypass 8 using a controller.

In the embodiments, the zero-leakage flameless thermal oxidizer further comprises a manhole 9 disposed on the outlet pipe 4 to facilitate maintenance by an operator.

Although exemplary embodiments of the present invention have been described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1, A zero-leakage flameless thermal oxidizer, comprising:

a housing;

the main air inlet pipeline is connected with an external smoke source and extends into the shell;

a plurality of branch inlet ducts, each of the plurality of branch inlet ducts having a end in communication with the main inlet duct and another end toward the bottom of the housing, and each of the plurality of branch inlet ducts being disposed vertically with respect to the main inlet duct;

a plurality of th heating devices, th heating devices being respectively disposed on an inner wall of each of the main air intake duct and the plurality of branch air intake ducts for heating the flue gas in each of the main air intake duct and the plurality of branch air intake ducts, and

and the air outlet pipeline is arranged at the top of the shell.

2. The zero-leakage flameless thermal oxidizer of claim 1, further comprising a thermal storage material filled in a bottom of the housing and surrounding the plurality of branch inlet pipes.

3. The zero-leak flameless thermal oxidizer of claim 2, wherein the thermal storage material is one of a random honeycomb thermal storage body and a monolithic honeycomb thermal storage body, wherein the monolithic honeycomb thermal storage body is disposed around the gas outlets of the plurality of branch gas inlet pipes, and the random honeycomb thermal storage body is disposed on an upper side of the monolithic honeycomb thermal storage body.

4. The zero-leak flameless thermal oxidizer of claim 1 wherein the plurality of heating means are finned heat sinks.

5. The zero-leak flameless thermal oxidizer of claim 1 wherein each of the plurality of heating means is disposed along the length of the main inlet duct and the plurality of branch inlet ducts.

6. The zero-leak flameless thermal oxidizer of claim 1 wherein a plurality of the th heating means are disposed in each of of the plurality of branch inlet conduits and the main inlet conduit.

7. The zero leak flameless thermal oxidizer of claim 1, further comprising:

8. The zero leak flameless thermal oxidizer of claim 1, further comprising:

the second heating device is arranged at the bottom of the shell.

9. A zero-leak flameless thermal oxidizer as set forth in claim 8 wherein said second heating means is an electric heater.

10. The zero leak flameless thermal oxidizer of claim 1, further comprising:

a thermal bypass disposed on the outlet duct for dissipating heat to an exterior of the housing when a temperature within the housing exceeds a preset threshold.

11. The zero-leakage flameless thermal oxidizer of claim 1, further comprising a manhole disposed on the outlet pipe.