KR102341333B1 - system for treatment to exhaust gas in tenter - Google Patents

Abstract

The present invention relates to an exhaust gas treatment system for a tenter frame that decomposes and removes volatile organic compounds contained in exhaust gas and silica dust, which is a cause substance of poisoning and white smoke of oxidation catalysts. The present invention provides an exhaust gas treatment system for a tenter frame in which the following components are sequentially provided according to the flow of the exhaust gas: a turbulence forming chamber having guide vanes so as to form a swirling flow inside the front end of an exhaust duct which is connected to a tenter frame and forms form a treatment facility; a high-temperature oxidation chamber having a screen that is made of mesh of a certain standard and generates heat so as to oxidize the exhaust gas; a filtering chamber having one or more filters or catalyst filters so as to collect dust in the exhaust gas subjected to oxidation treatment; and a heat exchange unit installed to recover heat from the exhaust gas subjected to oxidation treatment and to supply the recovered heat to the tenter frame and the turbulence forming chamber.

Description

Exhaust gas treatment system for tenter machine {system for treatment to exhaust gas in tenter}

The present invention includes a turbulence forming chamber having guide vanes to form a swirling flow inside the tip of an exhaust duct that is connected to a tenter and forms a treatment facility, and a screen that is made of a mesh of a certain standard to oxidize the exhaust gas and generates heat high-temperature oxidation chamber, a filtering chamber having one or more filters or catalyst filters to collect dust in the exhaust gas subjected to oxidation treatment; It relates to an exhaust gas treatment system for a tenter machine that is sequentially provided along the flow of the additional exhaust gas.

In general, the tenter process holds both sides of the fabric with pins from both sides and adjusts the width of the fabric with heat and pressure. The stability, shrinkage rate, and drying process of the fabric are carried out in parallel. It is a process of drying in the range of about 180°C to 220°C after casting by soaking the dyed fibers in a chemical mixture such as

And, the softening process, which uses a softener to give the fiber itself a unique soft property, is one of the important chemical post-treatments that improve antistatic properties and sewing properties at the same time.

However, the chemical mixture used in the tenter process, such as softener and polish, turns into oil mist and odorous substances as the dyed fibers are dried in the tenter, and the oil mist and odorous substances are included in the exhaust gas and discharged, thereby causing air pollution. became

In addition, as a technique for preventing air pollution as described above, an activated carbon adsorption method, a plasma method, and a catalytic method may be exemplified.

The activated carbon adsorption method has the advantage that the initial installation cost is low, but periodic replacement and cleaning of the activated carbon is required, and since the activated carbon collection performance easily reaches saturation, the activated carbon itself generates additional contaminants, Accordingly, the risk of fire inside the duct increases, and in addition, when water is used together with activated carbon, a large amount of wastewater is unavoidable.

In addition, in the case of the plasma method, it is a method suitable for medium/low concentration gas treatment, and although the removal efficiency of contaminants is excellent, the initial installation cost is high, and the plasma module is contaminated with a dedicated cleaning agent. It was not efficient, and there is a disadvantage in that smoke is generated when the plasma module is saturated.

In addition, the catalytic method is a selective catalytic reduction (SCR) method that selectively oxidizes or reduces harmful substances using an oxidation or reduction catalyst. , acid, base, and neutral gas can be treated simultaneously, pollutant emissions are minimized through catalytic oxidation, and maintenance is simplified because there is no need to separately wash or replace consumables. Catalyst is poisoned by moisture and other gas components, thereby reducing the treatment efficiency of the catalyst and reaching an unusable state.

In relation to this technology, the prior art Patent No. 2157804 discloses a technology of a regenerative catalytic combustion oxidation device, and the configuration is as shown in FIG. 1 , a purification unit 10 , a cyclone unit 20 and a heat exchange unit 30 . includes

And, the exhaust gas discharged from the facility (H) is introduced into the cyclone unit 20, and the dust is first separated, and the exhaust gas from which the dust is separated is introduced into the purification unit 10 and harmful substances remaining in the exhaust gas The exhaust gas is oxidized or reduced by a catalyst module (not shown) provided inside this, and the exhaust gas that has passed through the purification unit 10 is finally discharged to the outside through the exhaust stack (stack: ST) through the heat exchange unit 30 . shows a cyclic structure.

However, the combustion oxidizer as described above increases the cost by oxidizing the exhaust gas at a relatively high temperature of 200°C to 360°C by the catalyst module, as well as the initial installation cost and maintenance cost by using a catalyst. There is a downside to this increase.

In addition, there is a disadvantage in that the oxidation effect is lowered when contaminants with high viscosity are captured when oxidized or reduced by the catalyst module.

An object of the present invention to improve the problems of the prior art is to decompose and remove volatile organic compounds and odors contained in exhaust gas by high-temperature oxidation, and to poison the oxidation catalyst, which is a downstream facility, and silica, which is a causative material of white smoke. To remove dust, to improve the surrounding living environment due to bad odors and to solve civil complaints, and to make it possible to manufacture textile processing facilities that package a tenter, which is a discharge process facility, and a high-temperature oxidation treatment facility, which is an air pollution prevention process. , to provide an exhaust gas treatment system for a tenter machine that saves energy during decomposition treatment of contaminants, and forms an optimal heating temperature, heating time, turbulence, etc. for high-temperature decomposition treatment of contaminants.

In order to achieve the above object, the present invention is made of a turbulence forming chamber having guide vanes to form a swirling flow inside the exhaust duct at the tip of a treatment facility connected to the tenter, and a mesh of a certain standard to oxidize the exhaust gas. A high-temperature oxidation chamber having a screen that generates heat while heating, a filtering chamber having one or more filters or catalyst filters for collecting dust in the exhaust gas subjected to oxidation treatment, a tenter machine and a turbulence formation chamber by recovering the heat of the exhaust gas subjected to oxidation treatment It provides an exhaust gas treatment system for a tenter machine in which a heat exchange unit installed to be supplied to the exhaust gas is sequentially provided along the flow of exhaust gas.

In addition, the turbulence forming chamber of the present invention provides an exhaust gas treatment system for a tenter machine in which a variable guide vane is provided and a preheating plate is further provided in front thereof.

In addition, the high-temperature oxidation chamber of the present invention provides an exhaust gas treatment system for a tenter machine in which a screen having a mesh shape is provided inside a main conduit in which a plurality of nozzles are provided while fuel is supplied.

Subsequently, the high-temperature oxidation chamber of the present invention provides an exhaust gas treatment system for a tenter machine in which a dispersion plate having an auxiliary nozzle is further connected to the central portion of the main pipe to which fuel is supplied and is installed to burn on both sides of the screen.

In addition, the high-temperature oxidation chamber of the present invention is provided with an induction heater operating on the principle of electromagnetic induction, so that a metal screen is installed inside the exhaust duct made of a non-metal material to generate heat when power is supplied. Exhaust gas treatment system for a tenter machine to provide.

In addition, the filtering chamber of the present invention provides an exhaust gas treatment system for a tenter machine that is installed to enable the exchange of a filter and a unit dust collection facility consisting of a plurality of filters from the outside of the exhaust duct.

In addition, in the present invention, a rectifying plate is further installed at the rear end of the high-temperature oxidation chamber to provide a stable gas flow to the rear end equipment, and the rectifying plate has a plurality of first blades arranged in the horizontal direction at regular intervals along the exhaust gas flow. and provides an exhaust gas treatment system for a tenter machine having a configuration in which a plurality of second blades in the vertical direction are disposed.

As described above, according to the present invention, volatile organic compounds and odors contained in exhaust gas are decomposed and removed by high-temperature oxidation, and silica dust, which is a causative material of catalyst poisoning and white smoke, is removed, and improvement of the surrounding living environment due to odors and It is effective in resolving civil complaints, manufacturing packaged textile processing facilities, saving energy when decomposing pollutants, and forming optimal heating temperature, heating time, and turbulence for high-temperature decomposition treatment of pollutants. will be.

1 is a connection state diagram showing a conventional regenerative catalytic combustion oxidation device.
2 is an installation state diagram of the exhaust gas treatment system according to the present invention.
3 is a schematic view showing a guide vane of the exhaust gas treatment system according to the present invention.
4 is a schematic diagram showing a heat generating unit of the exhaust gas treatment system according to the present invention.
5 is a schematic view showing a filtering chamber of the exhaust gas treatment system according to the present invention.
6 is a diagram illustrating an installation state of a rectifier plate of the exhaust gas treatment system according to the present invention.
7 is a schematic diagram illustrating a high-temperature oxidation chamber according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail based on the accompanying drawings.

2 to 7, the exhaust gas treatment system includes a turbulence forming chamber 300, a high-temperature oxidation chamber 100, a rectifying plate 400, The filtering chamber 800 and the heat exchange unit 200 are sequentially installed.

At this time, the turbulence forming chamber 300 , the high temperature oxidation chamber 100 , the rectifying plate 400 , the filtering chamber 800 , and the heat exchange unit 200 are connected to the tenter to form an exhaust duct 900 which constitutes a treatment facility. ) may be integrally installed inside the

In addition, the exhaust duct 900 is connected to the tenter 700 and is integrally connected to the exhaust pipe 710 through which the polluted exhaust gas is discharged.

In addition, the turbulence forming chamber 300 has a guide vane 310 installed inside to form a swirling flow, and the guide vane is a rack and pinion, a ring gear, a worm hill, etc. It is a variable configuration that is rotatably installed. good.

In addition, the turbulence forming chamber 300 may be provided with a plurality of preheating plates 350 for initial preheating on a front side thereof.

In this case, the preheating plate 350 is porous and provided with a plurality of protrusions 353 to remove viscous substances in the exhaust gas.

In addition, a heat generating unit (H) is installed on one side of the turbulence forming chamber inside the high-temperature oxidation chamber (100).

At this time, the heat generating unit (H) is composed of a cylindrical main conduit 500 provided with a plurality of nozzles 510 to simultaneously inject fuel around the inner surface while fuel made of LPG gas or the like is supplied.

Subsequently, a screen 530 made of a mesh of a predetermined standard may be provided on the inside of the main conduit 500 to be spaced apart from the nozzle.

That is, when the fuel supplied through the main pipe 500 is injected through the nozzle 510, it is ignited by an ignition or ignition device and then burned while being installed to generate heat on one side of the screen.

In addition, a plurality of screens 530 of different meshes may be sequentially provided at regular intervals on the inside of the main pipe 500 along the flow of exhaust gas.

Preferably, the screen is formed in a shape in which the mesh is gradually reduced along the flow of the exhaust gas.

At this time, when the dispersion plate 600 having the auxiliary nozzle 610 is further connected to the central part of the main pipe 500, fuel is more preferably injected from both sides of the screen, and a screen is further provided between the main pipe and the dispersion plate. connected

Subsequently, in the heat generating unit (H) of the present invention, an induction heater 570 that operates on the principle of electromagnetic induction may be applied, and the induction heater is an exhaust duct 900 made of a non-metal material when power is supplied. It is installed so that the metal screen is heated and the exhaust gas passing through the screen is oxidized at a high temperature.

In addition, the dispersion plate 600 is installed to guide the exhaust gas flowing in the cone shape toward the screen.

In addition, a rectifying plate 400 is installed at the rear end of the high-temperature oxidation chamber 100 for supplying rectification to increase filtering efficiency when supplying exhaust gas to the filtering chamber 800 .

At this time, the rectifying plate 400 is formed in a configuration in which a plurality of variable braids 410 are integrally connected and is disposed in a horizontal or vertical direction to open or It is preferable that the closing amount is adjusted, and the first braid 410a in the horizontal direction and the second braid 410b in the vertical direction are sequentially arranged.

In addition, the filtering chamber 800 is installed at the rear end of the rectifying plate and is composed of a combination of one or more filters 810 and one or more catalytic filters 830 .

In this case, the filter and the catalyst filter 830 are installed so that they can be exchanged from the outside.

In addition, at the rear end of the filtering chamber 800, a thermal circulation unit 200 for recirculating the pyrolyzed air to a preheating plate or a tenter machine is further provided.

The operation of the present invention configured as described above will be described.

2 to 7, through the turbulence forming chamber 300 formed along the flow of the exhaust gas inside the exhaust duct 900 connected to the treatment facility (tenter machine), the high temperature oxidation chamber at the rear end ( 100) increases the flame contact time and the flame contact area of the exhaust gas supplied to the ventilator to increase the thermal decomposition and oxidation efficiency.

At this time, the exhaust gas for treatment is exposed to high temperature through the preheating plate 350 provided in the turbulence forming chamber 300 to reduce heat loss and increase oxidation efficiency.

That is, the preheating plate 350 initially preheats the exhaust gas by heat supplied from the heat exchange unit 200 , and has a porous shape and a plurality of protrusions 353 to first filter and decompose the viscous material. .

Subsequently, the turbulence forming chamber 300 having the variable guide vanes 310 is provided in front of the high-temperature oxidation chamber 100 to facilitate the flow of the supplied exhaust gas, thereby enhancing the oxidation effect.

In addition, the high-temperature oxidation chamber 100 is integrally connected to the exhaust pipe 710 of the tenter machine 700 so that the exhaust gas that has passed through the tenter machine passes through the exhaust pipe 710 at a high temperature in the high-temperature oxidation chamber 100 . to be oxidized.

In addition, the heat generating unit (H) installed inside the high-temperature oxidation chamber (100) is provided with a plurality of nozzles (510) around the inner surface while fuel is supplied to the cylindrical main conduit (500) of a predetermined standard. The screen 530 made of a mesh is integrally connected to ignite and burn on the surface of the screen 530 when fuel is supplied through the nozzle 510 to heat the entire screen.

At this time, the exhaust gas passing through the screen may be thermally decomposed and oxidized, and the screen may be coated with a ceramic on the outer diameter side of the metal.

In addition, if a plurality of screens 530 of different meshes are sequentially provided at regular intervals along the flow of exhaust gas inside the main pipe 500, the oxidation treatment effect is maximized through the repeated process of thermal decomposition. .

In addition, if the temperature of the screen 530 is also distinguished, efficient use of energy is possible.

At this time, as the dispersion plate 600 having the auxiliary nozzle 610 is further connected to the central part of the main pipe 500, the screen is further connected between the main pipe and the spray plate to simultaneously heat the inside and outside of the screen. The oxidation effect is maintained uniformly throughout the screen.

In addition, the dispersion plate 600 guides the exhaust gas flowing in the cone shape in the direction of the screen.

In addition, a rectifying plate 400 is installed at the rear end of the high-temperature oxidation chamber 100 to supply rectification to the filtering chamber 800 to increase filtering efficiency when supplying exhaust gas.

At this time, in the rectifying plate 400, the first braid 410a in the horizontal direction and the second braid 410b in the vertical direction are sequentially arranged to ensure reliable supply of rectification.

In addition, the filtering chamber 800 is composed of a combination of one or more filters 810 and one or more catalytic filters 830 to once again remove foreign substances in the exhaust gas that has been oxidized.

That is, the filter once again removes dust in the process gas flowing from the high-temperature oxidation chamber, and the catalyst filter collects untreated residual volatile organic compounds and odors from the process gas that has passed through the filter.

And, when the heat exchange unit 200 is installed at the rear end of the filtering chamber 800, the heat exchange unit generates heat from the high-temperature air exchanged in the heat exchange unit in the inner side of the tenter machine and the front end of the turbulence forming chamber, or in the recirculation unit. It will be installed for re-supply.

200...heat exchanger 400...rectifier plate
500...Main line 510...Nozzle
530...Screen 600...Spray
700...tenter 710...exhaust pipe
800...filtering chamber

Claims (7)

A turbulence forming chamber having guide vanes connected to the tenter to form a swirling flow inside the tip of the exhaust duct constituting the treatment facility;
A high-temperature oxidation chamber having a screen that generates heat while being made of a mesh of a certain standard to oxidize the exhaust gas;
A filtering chamber having one or more filters or catalyst filters to collect dust in the exhaust gas subjected to oxidation;
An exhaust gas treatment system for a tenter machine, in which a heat exchange unit installed to recover heat from the exhaust gas subjected to oxidation treatment and supply it to the turbulence forming chamber is sequentially provided along the flow of the exhaust gas. The exhaust gas treatment system for a tenter machine according to claim 1, wherein the turbulence forming chamber is provided with a variable guide vane and a preheating plate is further provided in front thereof. [2] The exhaust gas treatment system for a tenter machine according to claim 1, wherein the high-temperature oxidation chamber is provided with a screen having a mesh shape inside a main conduit in which a plurality of nozzles are provided while fuel is supplied. [4] The exhaust gas treatment system for a tenter machine according to claim 3, wherein the high-temperature oxidation chamber is further connected to a dispersion plate having an auxiliary nozzle to the central portion of the main pipe to which fuel is supplied and is installed to burn on both sides of the screen. The tenter according to claim 1, wherein the high-temperature oxidation chamber is provided with an induction heater operating on the principle of electromagnetic induction so that a metal screen is installed inside the exhaust duct made of a non-metal material to generate heat when power is supplied. Exhaust gas treatment system for aircraft. The exhaust gas treatment system for a tenter machine according to claim 1, wherein the filtering chamber is installed so as to be exchangeable from the outside of the exhaust duct. According to claim 1, wherein a rectifying plate is further installed at the rear end of the high-temperature oxidation chamber, the rectifying plate has a plurality of first braids in the horizontal direction at regular intervals along the flow of exhaust gas, and the second braid in the vertical direction. An exhaust gas treatment system for a tenter machine, characterized in that it consists of a plurality of arrangements.

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