CN210934464U - VOCs degradation treatment device - Google Patents

Abstract

The utility model discloses a VOCs degradation treatment device, it includes VOCs catalytic degradation reactor, and this VOCs catalytic degradation reactor includes the reaction cylinder and sets up little fluid pipe and UVA light source in the reaction cylinder, the pipe wall inside and outside coating of little fluid pipe has the photocatalyst, a plurality of irregular perforating hole has still been seted up on the pipe wall, and the UVA light source of being convenient for improves light utilization ratio with direction and the angular exposure of difference. The utility model provides a VOCs degradation treatment device, through the perforating hole of seting up a plurality of irregular shape on the pipe wall at the little fluid pipe, the shape of perforating hole is inequality and also not the rule is arranged promptly, so design to the UVA light source light that sees through can be not equidirectional and angle, ensures as far as possible that each direction has UVA light source light everywhere in the reaction cylinder, further improves light utilization ratio to and VOCs is gaseous scurrying change the photocatalyst that air current direction made each position of pipe wall behind the perforating hole and all play the effect, further improve treatment effeciency.

Description

VOCs degradation treatment device

Technical Field

The utility model relates to a waste gas treatment technical field, concretely relates to low temperature catalytic degradation industry VOCs's processing apparatus.

Background

Volatile Organic Compounds (VOCs) refer to those organic compounds with boiling points between 50-260 c, which are a major air pollutant and have been reported to exist in indoor air in concentrations of over 350 VOCs above 1 ppb due to the use of a large number of commodity chemicals. The source of volatile organic compounds is very wide, and the main pollution sources comprise industrial sources and living sources. In recent years, with the rapid development of domestic economy, the industrialization and urbanization progress is accelerated, the quantity of motor vehicle reserves is increased sharply, the major pollution source industries (petrifaction, automobiles, household appliances, fine chemical engineering and the like) of volatile organic matters are increased rapidly, the usage amount of volatile organic solvents is large, the discharge amount of VOCs is large, in addition, the problem of photochemical smog pollution caused by the discharge of VOCs is not recognized sufficiently, the pollution prevention and control of VOCs are not emphasized sufficiently, the discharge monitoring difficulty of VOCs is large, photochemical smog pollution in areas with developed economy is caused sometimes, regional dust-haze days are maintained at a high level every year, and the characteristics of three-high-one-serious regional atmosphere composite pollution, namely high acid rain frequency, high ozone concentration, high fine particulate matter concentration and serious dust-haze weather, are presented.

The control of VOCs including volatile organic pollutants can achieve the purpose of reducing and even eliminating VOCs emission through researching and using clean production process flows and improving equipment. However, due to the limitations of the current production technology level, many industries inevitably discharge or leak various concentrations of organic waste gases to the environment during the production process, and at this time, various technologies should be considered to control the pollution of the VOCs. The existing mature technology for treating industrial source VOCs mainly comprises absorption technology, adsorption technology, condensation technology and membrane separation technology for recovering formaldehyde and BTX volatile organic compounds, combustion technology, low-temperature plasma technology, biological treatment technology, photochemical technology and the like for destroying the formaldehyde and BTX volatile organic compounds. Adsorption and catalysis are the most economic and effective VOCs pollution control technology at present, but the outstanding problems of low-temperature activity, low treatment efficiency and the like of the catalyst still exist, and the seeking of simple system, low operation cost and high efficiency is the development direction of VOCs degradation technology.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a device for degrading and treating VOCs, which has high treatment efficiency, low energy consumption and no secondary pollution.

In order to solve the technical problem, the utility model provides a VOCs degradation treatment device has adopted as follows technical scheme:

the utility model provides a VOCs degradation treatment device, its includes VOCs catalytic degradation reactor, and this VOCs catalytic degradation reactor includes the reaction cylinder and sets up little fluid pipe and UVA light source in the reaction cylinder, the pipe wall inside and outside coating of little fluid pipe has the photocatalyst, still seted up the irregular perforating hole of a plurality of on the pipe wall, be convenient for the UVA light source improves light utilization ratio with direction and angle irradiation of difference.

As the utility model provides a VOCs degradation treatment device's an improvement, the pipe wall inboard of microfluid pipe still is provided with the spoiler piece.

As the utility model provides a VOCs degradation processing apparatus's an improvement, the spoiler piece is triangle-shaped spoiler piece.

As the utility model provides a VOCs degradation processing apparatus's an improvement, the pipe diameter of microfluid pipe is 5~8cm, the length of side of triangle-shaped spoiler piece is 3-5 cm.

As an improvement of the utility model provides a VOCs degradation treatment device, the microfluid pipe is following the reaction cylinder central line is cyclic annular and distributes, does not have the spacer between the adjacent microfluid pipe.

As an improvement of the utility model provides a VOCs degradation treatment device, the photocatalyst is titanium dioxide photocatalyst.

As the utility model provides a VOCs degradation treatment device's an improvement, the UVA light source sets up on the reaction cylinder central line and/or cyclic annular range is in on the reaction cylinder inner wall.

As the utility model provides a VOCs degradation processing apparatus's an improvement, the reaction cylinder inner wall is provided with the reflector layer.

As the utility model provides a VOCs degradation treatment device's an improvement, this VOCs degradation treatment device still includes centrifugal fan, electric heating chamber, heat exchange chamber and control box, the heat exchange chamber is connected with electric heating chamber and centrifugal fan respectively, VOCs catalytic degradation reactor both ends respectively with electric heating chamber and heat exchange chamber connect, the equal connection control of control box centrifugal fan, electric heating chamber, heat exchange chamber and VOCs catalytic degradation reactor.

As the utility model provides a VOCs degradation processing apparatus's an improvement, the temperature control scope of electricity heating chamber is 120~150 ℃.

Compared with the prior art, the utility model discloses there is following beneficial effect:

1. the utility model provides a VOCs degradation processing apparatus, through the perforating hole of seting up a plurality of irregular shape on the pipe wall at the little fluid pipe, the shape of perforating hole is inequality and also not the rule is arranged promptly, so design, so that the UVA light source light that sees through can not equidirectional and angle, each direction all has UVA light source light everywhere in guaranteeing the reaction cylinder as far as, further improve light utilization ratio (can make light utilization ratio improve about 15-25%) and treatment effeciency (VOCs is gaseous scurrying change the photocatalyst that air current direction made each position of pipe wall all plays the effect behind the perforating hole).

2. Through the design of arranging overall arrangement and the spoiler piece in the micro-fluidic tube, can increase VOCs and photocatalyst's effective contact frequency, improve reaction rate, wherein the spoiler piece mainly used disturbs the gas flow direction to prevent that gas velocity of flow is too fast, and gas does not carry out catalytic degradation and just has been caused to handle incomprehensiblely, secondary pollution by the reaction cylinder of discharging.

3. This VOCs degradation processing apparatus not only can increase effective photocatalysis area, makes light utilization ratio obtain showing and improves about 15~25%, and system's compact structure is reasonable moreover, and is easy and simple to handle, and the operation maintenance cost is lower, and the energy consumption can reduce month 10~15%, no secondary pollution.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is a schematic structural view of a VOCs degradation treatment device of the present invention;

FIG. 2 is a sectional view of the reactor for catalytic degradation of VOCs of the present invention;

fig. 3 is an expanded view of the microfluidic tube of the reactor for catalytic degradation of VOCs of the present invention.

In the figure: 1, a centrifugal fan; 2, an air outlet; 3, air inlet; 4 a heat exchange chamber; 5 an electric heating chamber; 6, a control box; 7VOCs catalytic degradation reactor; 8 microfluidic tubes; 81 through holes; 9 UVA light source; 10 air pipes; 11 a support; 12 turbulence block.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either mechanically or electrically or in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

In the prior art, in order to increase the effective light utilization rate, an aluminum foil reflecting layer is mainly added on the inner wall of a reaction cylinder to prolong the light propagation path, or a UVA light source 9 is added between cubic optical fiber bundles or sheets coated with a photocatalyst, but the improvement of the former still has the problem that the light of the UVA light source 9 is not irradiated in place, and the improvement of the latter has the problems of complicated structure and increased cost.

In order to solve the problems of the prior art, as shown in fig. 1 to 3, the utility model provides a VOCs degradation treatment device, specifically, it includes VOCs catalytic degradation reactor 7, and this VOCs catalytic degradation reactor 7 includes the reaction cylinder and sets up little fluid pipe 8 and UVA light source 9 in the reaction cylinder, the pipe wall inside and outside coating of little fluid pipe 8 has the photocatalyst, a plurality of irregular perforating hole 81 has still been seted up on the pipe wall, and the UVA light source 9 of being convenient for shines with different direction and angle and improves light utilization ratio and VOCs gas and scurries change the photocatalyst that air current direction made each position of pipe wall all plays the effect behind the perforating hole.

The utility model provides a VOCs degradation processing apparatus, through set up a plurality of irregularly shaped's perforating hole 81 on the pipe wall at microfluid pipe 8, perforating hole 81's shape is inequality and also not the rule arrange promptly, so design to the 9 light of UVA light source that see through can not equidirectional and angle, ensures that all directions have UVA light source 9 light everywhere in the reaction cylinder as far as, further improves light utilization and treatment effeciency.

As an implementation and improvement mode of the present invention, as shown in fig. 2, the microfluidic tubes 8 are annularly distributed along the central line of the reaction cylinder, and no spacer is provided between adjacent microfluidic tubes 8. It can be understood that a plurality of microfluidic tubes 8 are annularly arranged to form a microfluidic tube 8 ring, and a plurality of microfluidic tubes 8 with different diameters are arranged along the radial concentric circles of the reaction cylinder.

Further, a turbulence block 12, preferably a triangular turbulence block 12, is further disposed at a position without the through hole 81 inside the tube wall of the microfluidic tube 8, and it should be noted that other shapes of turbulence blocks may be used to perform a turbulence function. Each micro fluid pipe 8 can be provided with a plurality of turbulence blocks 12, and the turbulence blocks 12 are arranged along the central line direction of the micro fluid pipe 8 in a staggered manner.

Preferably, but not limitatively, the photocatalyst is a titanium dioxide photocatalyst. The preferable material of the microfluidic pipe 8 is PE, the pipe diameter is 5-8 cm, and the side length of the triangular flow disturbing block 12 is 3-5 cm.

Through the arrangement layout in the little fluid pipe 8 and the design of spoiler block 12, can increase VOCs and photocatalyst's effective contact frequency, improve reaction rate, wherein spoiler block 12 mainly used disturbs the gas flow direction, when too fast in case the gas velocity of flow, gas does not carry out catalytic degradation and just has been caused to handle by the reaction cylinder of discharging, secondary pollution, the spoiler still can disturb gaseous flow direction and make it scurry from the perforating hole, the dwell time of extension gas in the reactor, whatever gaseous meeting the spoiler fast can be partial to which kind of direction just can ensure that it can catalytic decomposition in the reactor, guarantee the catalytic treatment effect.

As an implementation of the present invention is improved, the UVA light source 9 is an ultraviolet light bar, and it is set up on the reaction tube central line, and/or the annular arrangement is in on the reaction tube inner wall, preferably on the reaction tube central line and on the inner wall all be provided with ultraviolet light bar, wherein the preferred interval of ultraviolet light bar on the reaction tube inner wall is cyclic annular to be arranged.

Furthermore, a reflecting layer is arranged on the inner wall of the reaction cylinder.

As an implementation improvement mode of the utility model, the VOCs degradation treatment device further comprises a centrifugal fan 1, an electric heating chamber 5, a heat exchange chamber 4 and a control box 6, the waste gas inlet 3 of the heat exchange chamber 4 is used for receiving industrial waste gas, the waste gas outlet is connected with the inlet of the electric heating chamber 5, the outlet of the electric heating chamber 5 is connected with the inlet of the VOCs catalytic degradation reactor 7 through an air pipe 10, the outlet of the VOCs catalytic degradation reactor 7 is connected with the purified gas inlet of the heat exchange chamber 4 through the air pipe 10, the purified gas outlet of the heat exchange chamber 4 is connected with the centrifugal fan 1, the gas after catalytic degradation of the VOCs catalytic degradation reactor 7 is discharged through the gas outlet 2 of the centrifugal fan 1, wherein the control box 6 is connected and controlled with the centrifugal fan 1, the electric heating chamber 5, the heat exchange chamber 4 and the VOCs catalytic degradation reactor 7, the above devices can be fixedly installed through the bracket 11. The controller mainly controls parameters such as the wind pressure of the centrifugal fan 1, the heating temperature of the electric heating chamber 5, the gas flow rate of the VOCs degradation treatment reactor 7 and the like.

In this embodiment, the outlet and inlet of the VOCs catalytic degradation reactor 7 are preferably disposed on both sides of the axis of the reaction cylinder. The temperature control range of the electric heating chamber 5 is 120-150 ℃, the outer diameter of the VOCs catalytic degradation reactor 7 is 1.2-1.6 meters, and the temperature control range can be set according to practical application scenes, and meanwhile, the air pipe 10 and the support 11 can also be set according to practical application scenes.

The working process of the VOCs degradation treatment device is as follows:

industry VOCs waste gas passes through air inlet 3 and gets into heat exchange chamber 4, go into electric heating chamber 5 after carrying out the heat exchange with the gas that has handled, get into industry VOCs catalytic degradation reactor 7 after reaching the required temperature of degradation, the gas dispersion that enters into in VOCs catalytic degradation reactor 7 enters into little fluid pipe 8, carry out catalytic degradation under UVA light source 9 catalytic action, the gas after handling gets into heat exchange chamber 4 through the tuber pipe, at last in the tuber pipe gets into centrifugal fan 1, discharge through gas outlet 2.

The temperature for catalytic degradation of VOCs is about 120-150 ℃, if the waste gas is normal temperature, heating is needed, so that a heating chamber is needed, and the heat of the treated gas can be exchanged in the heat exchange chamber, thereby reducing the energy consumption for heating.

The VOCs degradation treatment device can increase the effective photocatalytic area, obviously improve the light utilization rate, and has compact and reasonable system structure, simple and convenient operation, lower operation and maintenance cost and no secondary pollution.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims (10)

1. The utility model provides a VOCs degradation treatment device, its characterized in that, it includes VOCs catalytic degradation reactor, and this VOCs catalytic degradation reactor includes the reaction cylinder and sets up little fluid tube and UVA light source in the reaction cylinder, the pipe wall inside and outside coating of little fluid tube has the photocatalyst, still seted up a plurality of irregular perforating hole on the pipe wall, be convenient for the UVA light source with different directions and angle irradiation improvement light utilization ratio.

2. The apparatus according to claim 1, wherein a turbulent flow block is further disposed inside the wall of the microfluidic tube.

3. The apparatus according to claim 2, wherein the turbulence block is a triangular turbulence block.

4. The VOCs degradation treatment device of claim 3, wherein the pipe diameter of the micro-fluid pipe is 5-8 cm, and the side length of the triangular turbulence block is 3-5 cm.

5. The apparatus of claim 1, wherein the microfluidic tubes are annularly distributed along the centerline of the reaction vessel, and no spacer is provided between adjacent microfluidic tubes.

6. The apparatus of claim 1, wherein the photocatalyst is a titanium dioxide photocatalyst.

7. A VOCs degradation treatment apparatus in accordance with claim 1, 2 or 4, wherein the UVA light source is disposed on the centerline of the reaction cartridge and/or annularly arrayed on the inner wall of the reaction cartridge.

8. The VOCs degradation treatment device of claim 7, wherein a reflective layer is disposed on the inner wall of the reaction cylinder.

9. The device for degrading and treating VOCs according to claim 1, further comprising a centrifugal fan, an electric heating chamber, a heat exchange chamber and a control box, wherein the heat exchange chamber is connected with the electric heating chamber and the centrifugal fan respectively, two ends of the VOCs catalytic degradation reactor are connected with the electric heating chamber and the heat exchange chamber respectively, and the control box is connected and controls the centrifugal fan, the electric heating chamber, the heat exchange chamber and the VOCs catalytic degradation reactor.

10. The apparatus according to claim 9, wherein the temperature of the electric heating chamber is controlled within a range of 120-150 ℃.

Images