KR20180135367A - Small city hazardous gas process unit - Google Patents

Abstract

The present invention relates to a small treatment device for treating harmful gas in a city and, specifically, to a small treatment device for treating harmful gas in a city, which maximizes efficiency while miniaturizing the device, wherein the small treatment device for treating the harmful gas in a city can discharge clean air by effectively treating the harmful gas generated in the city. According to the present invention, the small treatment device for treating harmful gas in a city is very safe by not using flame and does not generate a new pollution source. The small treatment device for treating harmful gas in a city provides very low concern about fire since the small treatment device does not use a flame or does not use heat in an excessively high temperature. The small treatment device for treating harmful gas in a city can firstly remove dust or fine dust by a gravity reinforcement method and enables the dust with viscosity such as tar to be filtered by a first filter. The small treatment device for treating harmful gas in a city effectively treats the harmful gas in the city by washing the filtered dust with condensed water. The small treatment device for treating harmful gas in a city does not generate sparks due to electricity and can be safely operated as the heat stored by a heat storage material can consistently maintain operation temperature of a catalyst. Therefore, the small treatment device for treating harmful gas in a city can be safely operated. Also, since the heat storage material stores the heat, catalytic action is smoothly maintained even if an inflow rate of the harmful gas in the city is terribly changed. Therefore, the small treatment device for treating harmful gas in a city has nice operation efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a small-

More particularly, the present invention relates to an apparatus and a method for efficiently processing harmful gas generated in a city and discharging clean air, .

Modern people have various environmental pollution such as pollution of water quality and air pollution due to concentration of population and urbanization. In order to minimize such environmental pollution, various norms and regulations are created in various countries and regulations are actually made.

In recent years, air quality deterioration due to fine dust, sandstorms, and smog has been seriously deteriorated, and the regulation of exhaust gas to prevent the deterioration of such air quality has been continuously increasing.

Locations or devices where harmful gas is generated in the city are mainly cooked or work in the city such as a restaurant or a coffee shop inside the city. Especially, it is a cooking such as roasting of meat and roasting of beans When work is done, harmful gases including many harmful substances are emitted.

For example, when roasting coffee beans, harmful substances such as acetaldehyde, formaldehyde, benzene and ammonia, dust and fine dust are contained in large amounts, and a large amount of carcinogens such as tar (hereinafter, Is referred to as 'city hazardous gas').

It has also been reported that the concentration of polycyclic aromatic hydrocarbons (PAHs), which are carcinogens, is very high when bamboo shoots are brewed in a restaurant.

Especially, in the case of Korea, as of 2016, the number of large franchise coffee shops is 6,472, the number is very large. If a small cafe is included, the number of coffee beans is 11,196 tons per year Because of the consumption of coffee such as coffee roasting, the generation of harmful gas in the city is serious.

All of these coffee shops are located in the city, and when they roast coffee beans, the harmful gas from the city is discharged into the city as it is, and the health of the citizens is being hurt.

As an apparatus for removing harmful gases from the city, there has been provided an afterburner which burns harmful substances present in the harmful gas of the city at a high temperature. Such a technique is disclosed in Korean Patent Registration No. 1742269.

Further, a device such as a cyclone is provided for removing fine dust or dust, or an electrostatic precipitator is provided.

Conventional apparatuses for removing harmful gases such as afterburners, cyclones, and electrostatic precipitators have the following problems.

(1) When the afterburner is installed, the air volume is not constant as in the case of the coffee roasting device, and when a large amount of city harmful gas is discharged at once, the flame is turned off and the fuel cost is high.

(2) Dust and fine dust coming into the duct due to flame often cause a fire.

(3) When the cyclone is installed to remove dust or fine dust, it is very large and occupies a lot of installation sites. In case that the city harmful gas contains a lot of water, condensation occurs, And the effect of treating the harmful gas in the city is reduced.

(4) When a dust collector such as an electrostatic precipitator is used, a large maintenance cost is required, and when water is contained in a large amount of poisonous gas in the city, sparks are generated.

(5) When the inflow amount of harmful gas is not constant, the efficiency is significantly lowered and the power consumption is remarkably high.

In order to solve the above problems, the present invention is characterized in that a pre-filter unit, a fluid unit, and a process duct unit are connected to the inside of the body,

The pre-filter unit includes a box-shaped case having an inlet for introducing noxious gas into a lower side surface thereof, a gravity enhancing type dust collecting device formed therein, and an upper end of the dust collecting device for sequentially passing through a primary filter, a primary heat exchanger, A filter is formed,

Wherein the flow portion is formed to flow air that has passed through the pre-filter portion to the processing duct portion by the operation fan,

The treatment duct portion is divided into the center, a secondary heat exchanger is formed on one side, and an electric heater, a heat storage material, and a catalyst are sequentially arranged from the lower end to the upper end on the other side.

According to the present invention, the following effects can be obtained.

(1) Since it does not use the flame, it is very safe and does not cause a new pollutant source. In addition, in the state where the water is sufficiently removed by the primary heat exchanger and the heat is supplied by heat exchange with the high- Since it is heated (electric heater), it consumes less electric power, so fuel cost is low.

(2) The use of excessive heat or the use of no flames is very low.

(3) Dust or fine dust is firstly removed by the gravity enhancement method, and viscous dust such as tar is caught by the primary filter and the condensed water is washed out, thereby effectively treating the city harmful gas.

(4) The spark due to electricity does not occur, and the heat accumulated by the heat accumulating material keeps the operating temperature of the catalyst constantly, so that it can be safely operated.

(5) Since heat is stored in the heat storage material, the catalytic action is maintained smoothly even when the inflow amount of the harmful gas in the city is changed severely.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a city hazardous gas miniaturization apparatus formed as a preferred embodiment of the present invention; Fig.
FIG. 2 is a perspective view showing a state where a body of a city hazardous gas small-scale processing apparatus formed as a preferred embodiment of the present invention is opened. FIG.
3 is a perspective view illustrating a prefilter portion and a flow portion of a city hazardous gas small-scale processing apparatus formed as a preferred embodiment of the present invention.
Fig. 4 is an exploded perspective view of a pre-filter unit of a city hazardous gas miniaturization apparatus formed as a preferred embodiment of the present invention. Fig.
5 is a structural view of the inside of a processing duct portion of a city hazardous gas small-scale processing apparatus formed as a preferred embodiment of the present invention.
6 is a cross-sectional perspective view of a duct case of a processing duct portion of a city hazardous gas small-scale processing apparatus formed as a preferred embodiment of the present invention.
7 is an internal perspective view of a processing duct portion of a city hazardous gas small-scale processing apparatus formed as a preferred embodiment of the present invention.

In the present invention, the pre-filter unit 200, the fluid unit 400, and the process duct unit 300 are connected to the inside of the body 100,

The prefilter 200 includes a case 201 having a box-shaped casing 201 for introducing harmful gas into the lower side surface thereof, a gravity enhancing type dust collector 220 formed therein, A primary filter 230, a primary heat exchanger 240 and a secondary filter 250 are formed in this order,

The flow unit 400 is configured to flow the air that has passed through the pre-filter unit 200 to the processing duct unit 300 by the operation fan 430,

The treatment duct portion 300 is divided into the center, a secondary heat exchanger 320 is formed on one side, and an electric heater 330, a heat storage material 340, and a catalyst 350 are sequentially arranged from the lower end to the upper end .

The body 100 is formed in a rectangular box shape and a door 110 is formed at a lower front end of the body 110. The door 110 is formed to prevent the case 201 of the pre-

A hole is formed in a lower side surface of the body 100 so that the harmful gas inlet 120 can protrude therefrom and air can be introduced into the outside air inlet 205 to allow the outside air to flow into the center portion of the side surface. And is formed in a grill shape.

A hole is formed on one side of the upper end of the body 100 so that a clean gas outlet 130 through which the clean gas discharged from the processing duct 300 is discharged.

The prefilter unit 200 is formed at the front of the body 100 with a case 201 coupled to the lower door 110.

The pre-filter unit 200 includes a large number of noxious gas, for example, water flowing into the noxious gas inlet 120 from the noxious gas, for example, a coffee roaster, a dust containing a tar component such as tar and fine dust, Hazardous gas is introduced.

The dust collector 220 is connected to the city harmful gas inlet 120. The dust collector 220 is formed in a reverse U shape to reduce the speed of the dust by enlarged pipe, And the dust of relatively large particles is formed to fall to the dust box formed at the bottom by gravity.

The gas discharged to the side of the dust collector 220 passes through a primary filter 230. The primary filter 230 is formed as a mesh type and is dust-filtered.

A primary heat exchanger 240 is formed at an upper end of the primary filter 230. The primary heat exchanger 240 exchanges room-temperature air from the outside of the processing apparatus 10, .

In the case of coffee roasting, the treated noxious harmful gas is about 70 to 80 degrees. When heat exchange with the outside air occurs, water vapor is condensed by the primary heat exchanger 240 and falls to the bottom.

When the condensed water falls to the lower end as described above, the first filter 230 is detached while being washed, and the condensed water is condensed in the dust box 210.

When the water vapor is removed by the primary heat exchanger 240, the temperature can be raised quickly even when the temperature of the process gas is increased to react with the catalyst, even if the amount of the electric heater is reduced.

A secondary filter 250 is formed at an upper end of the primary heat exchanger 240. The secondary filter 250 is formed to collect fine dust.

The fluid pipe 400 is connected to the upper end of the case 201 of the pre-filter unit 200. The fluid pipe 400 includes a pre-inflow pipe 410 communicating with the pre-filter unit 200, An operation fan 430 is formed at an end of the pre-inflow pipe 410 and a duct inflow pipe 420 is connected to an output portion of the operation fan 430.

A valve 415 is formed in the pre-inflow pipe 410 to adjust the flow rate of the process gas.

A duct 300 is formed in the rear of the pre-filter unit 200 to communicate with the duct inlet pipe 420 of the fluid unit 400. The duct 300 of the duct unit 310 A passage is formed so that the process gas flows.

The duct case 310 of the processing duct unit 300 is formed with upper, lower, left and right panels 301, 302, 303 and 304, a primary wall 311 which is vertically spaced apart from the left panel 303, .

A secondary wall 312 is formed to be spaced apart from the primary wall 311 and a tertiary wall 313 is formed to be spaced from the secondary wall 312. The secondary wall 312 and the tertiary wall 313 are formed close to each other And is formed parallel to the inside.

And a lower wall 314 is formed at the lower ends of the first, second, third, and fourth walls 311, 312, 313, and 315. The fourth wall 315 is formed to be spaced apart from the third wall 313,

The primary wall 311 is formed with a square rectangular left flow hole 311a and a right side flow hole 312a formed in the secondary wall 312 so as to correspond to the left flow hole 311a.

Left and right lower end flow ports 314a and 314b are formed between the primary wall 311 and the secondary wall 312 and between the tertiary wall 313 and the quaternary wall 315, respectively, on the lower wall 314 .

The upper ends of the primary wall 311 and the tertiary wall 313 are formed with left and right upper flow ports 311b and 313a spaced apart from the upper panel 301, respectively.

A secondary heat exchanger 320 is formed between the first and second walls 311 and 312 formed in the duct case 310 and between the third and fourth walls 313 and 315, ), A heat storage material 340, and a catalyst 350, respectively.

The secondary heat exchanger 320 is communicated with the left lower flow port 314b through a plurality of pipes in the middle in the state where the upper and lower portions are blocked, and the process gas is moved.

The heat storage material 340 is formed of ceramic, absorbs heat and is slowly cooled. The catalyst 350 is formed with a catalyst that reacts with a poisonous substance such as VOC of the city noxious gas.

The storage material 340 may be formed of the same or different catalyst as that of the catalyst 350 to increase the removal efficiency of the noxious gas,

A clean gas outlet 130 is formed at an upper end of the first and second walls 311 and 312 of the duct case 310 of the processing duct unit 300.

Hereinafter, the operation of the city hazardous gas small-scale processing apparatus formed as a preferred embodiment of the present invention will be described.

And connects the exhaust port of the apparatus from which the city harmful gas is discharged to the city harmful gas inlet 120 of the processing apparatus 10. [

The device for discharging the harmful gas of the city may be a device for roasting coffee roasting or a device for baking containing a lot of moisture or a large amount of change in the flow rate to be discharged, and the temperature at which the harmful gas is introduced is about 80 to 100 degrees Most cases.

When the city harmful gas is introduced into the dust box 210, the dust collecting device 220 of the pre-filter unit 200 causes the coarse dust to fall to the dust box 210. Then, dusts such as tar .

Thereafter, the process gas continues to rise and heat exchange occurs in the primary heat exchanger 240. At this time, the cool outside air (room temperature) flows from the outside air inlet 205 to lower the temperature of the primary heat exchanger 240.

When the temperature of the process gas is lowered in the primary heat exchanger 240, water vapor condenses and water droplets are formed on the surface of the primary heat exchanger 240 and then fall off. As the water falls, the primary filter 230 is washed do.

Thereafter, the process gas is passed through a secondary filter 250 for removing fine dust, so that dust and some harmful substances are removed.

The first filter 230 and the second filter 250 are formed to be easily replaceable when the front door 110 is opened.

The flow unit 400 transfers power to move the process gas so that the process gas passing through the pre-filter unit 200 passes through the duct inlet pipe 420 along the pre-inflow pipe 410, Lt; / RTI >

The process gas introduced into the process gas inlet 305 flows inside as shown in FIGS. 5 and 6, and the process gas flows along a plurality of pipes formed in the middle of the secondary heat exchanger 320 formed in the duct case 310 And the temperature rises while passing through the lower left flow port 314a of the lower wall 314.

That is, the process gas (temperature of about 50 degrees) passing through the pre-filter unit 200 is moved to the left lower flow port 314b communicated with the plurality of pipes of the secondary heat exchanger 320, The clean gas having a high temperature (about 300 degrees) moves to the outside of the plurality of pipes of the secondary heat exchanger 320 and heat exchange occurs with each other, so that the temperature of the process gas rises to about 220 degrees.

Thereafter, the process gas rises along the right lower flow port 314b of the lower wall 314, the temperature rises by the electric heater 330, and the final heating temperature is about 250 to 300 degrees Celsius ), The harmful substances such as VOC are oxidized and removed while passing through the catalyst 350.

As described above, the process gas that has passed through the catalyst 350 becomes a clean gas, and the clean gas at a high temperature flows between the secondary wall 312 and the tertiary wall 313 along the right upper end flow port 313a of the tertiary wall 313 And flows through the left flow port 311a of the primary wall 311 through the secondary heat exchanger 320 while escaping to the right flow port 312a of the secondary wall 312. [

As described above, since the steam is removed from the process gas while passing through the primary heat exchanger, and the temperature rises rapidly as it passes through the secondary heat exchanger, the temperature rises to nearly 220 degrees when going to the electric heater. (300 degrees) of the catalyst 350 can be attained by raising the temperature of the catalyst 350 by about 80 degrees, including the heat in the exhaust pipe 340, so that the entire apparatus 10 can be operated with a power of about 5 Kw, .

Then, the gas flows upward between the left panel 303 and the primary wall 311 and then flows through the left upper flow port 311b formed at the upper end of the primary wall 311 and is discharged to the clean gas outlet 130.

Since the heat storage material 340 can keep the heat, the process can be performed because the temperature of the process gas is quickly raised to a temperature suitable for the catalytic action even if the amount of the incoming harmful gas changes, and the electric heater 330 So that the electric efficiency is maximized.

In addition, the processing duct portion 300 can minimize the size by effectively forming a space inside the duct case 310.

According to the present invention, there is no fear of fire due to the fact that no flame is used, so that it is very safe, does not cause a new source of pollution, uses too much heat or does not use a flame, The dust is firstly removed by the gravity enhancement method, and viscous dust such as tar is caught by the primary filter, and the condensed water is washed away. Thus, the harmful gas is treated very effectively, Since the heat stored by the heat storage material continuously maintains the operating temperature of the catalyst, it can be operated safely. Since the heat is stored in the heat storage material, the catalytic action is maintained smoothly even if the inflow amount of the harmful gas is changed greatly. This produces a good effect.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention as defined by the appended claims.

10: processing apparatus 100: body
110: door 120: city harmful gas inlet
130: Clean gas exhaust port 200: Pre-
201: Case 205: Outer air inlet
210: dust box 220: dust collector
230: primary filter 240: primary heat exchanger
250: Secondary filter 300: Treatment duct section
301: upper panel 302: lower panel
303: Left panel 304: Right panel
305: Process gas inlet 310: Duct case
311: primary wall 311a: left flow
311b: left upper flow port 312: secondary wall
312a: Right side flow hole 313: Third wall
313a: right upper flow port 314: lower wall
314a: a lower left flow port 314b: a lower right flow port
315: Fourth wall 320: Secondary heat exchanger
330: Electric heater 340: Heat storage material
350: catalyst 400:
410: Free inlet pipe 415: Valve
420: duct inlet pipe 430: operation fan

Claims (9)

A prefilter for introducing harmful gas from the city, which removes fine dust and harmful gas, is formed, and an operating fan is formed to form a flow portion for facilitating the flow of the process gas in the prefilter and the processing duct And a processing duct part communicating with the moving part and having a processing duct case formed therein in which an electric heater, a heat storage material, and a catalyst are formed in parallel from the lower end to the upper end. The pre-filter unit, the fluid unit, and the processing duct unit are connected to the inside of the body,
The pre-filter unit includes a box-shaped case having an inlet for introducing noxious gas into a lower side surface thereof, a gravity enhancing type dust collecting device formed therein, and an upper end of the dust collecting device for sequentially passing through a primary filter, a primary heat exchanger, A filter is formed,
Wherein the flow portion is formed to flow air that has passed through the pre-filter portion to the processing duct portion by the operation fan,
Wherein the treatment duct portion is divided in the middle, a secondary heat exchanger is formed on one side, and an electric heater, a heat accumulating material and a catalyst are sequentially arranged from the lower end to the upper end on the other side. 3. The method according to claim 1 or 2,
Wherein the dust collecting device is formed in a reverse U shape so that the velocity of the dust is reduced by an enlarged pipe, and the flow is formed so as to escape to the side. 3. The method of claim 2,
Wherein the primary filter is formed of a metal mesh. 3. The method according to claim 1 or 2,
The duct case 310 of the processing duct unit 300 includes a primary wall 311 formed with vertically arranged upper, lower, left and right panels 301, 302, 303 and 304 and spaced apart from the left panel 303, A secondary wall 312 is formed to be spaced apart from the primary wall 311 and a tertiary wall 313 is formed to be spaced apart from the secondary wall 312. The secondary wall 312 and the tertiary wall 313 Are formed close to each other,
And a lower wall 314 is formed at the lower ends of the first, second, third, and fourth walls 311, 312, 313, and 315. The first wall 315 is located near the right wall 304, A right sidewall 311a is formed in the center of the sidewall 311 and a right sidewall 312a is formed in the secondary sidewall 312 so as to correspond to the left sidewall 311a. Left and right lower end flow ports 314a and 314b are formed between the primary wall 311 and the secondary wall 312 and between the tertiary wall 313 and the quaternary wall 315. The primary wall 311, And the upper end of the tertiary wall (313) is formed with left and right upper flow ports (311b, 313a) spaced apart from the upper panel (301). 3. The method according to claim 1 or 2,
Wherein the city hazardous gas is a gas discharged from the coffee roasting apparatus. 3. The method according to claim 1 or 2,
Wherein the heat storage material of the processing duct portion is formed of ceramic. 3. The method of claim 2,
Wherein the first filter and the second filter are formed so that a door formed at a lower front end of the body can be opened and replaced easily. 3. The method according to claim 1 or 2,
Wherein the storage material is another catalyst.

Images