CN110567082A - Device for purifying air of plant containing combustible pollutants - Google Patents

Device for purifying air of plant containing combustible pollutants Download PDF

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Publication number
CN110567082A
CN110567082A CN201910885245.XA CN201910885245A CN110567082A CN 110567082 A CN110567082 A CN 110567082A CN 201910885245 A CN201910885245 A CN 201910885245A CN 110567082 A CN110567082 A CN 110567082A
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CN
China
Prior art keywords
air
fan
fresh air
plant
pollutants
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910885245.XA
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Chinese (zh)
Inventor
牛洪英
邱贵阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Nage New Material Technology Co Ltd
Original Assignee
Hebei Nage New Material Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei Nage New Material Technology Co Ltd filed Critical Hebei Nage New Material Technology Co Ltd
Priority to CN201910885245.XA priority Critical patent/CN110567082A/en
Publication of CN110567082A publication Critical patent/CN110567082A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/002Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/10Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D15/00Other domestic- or space-heating systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/04Ventilation with ducting systems also by double walls; with natural circulation
    • F24F7/06Ventilation with ducting systems also by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit

Abstract

The invention discloses a device for purifying air of a workshop containing combustible pollutants, which comprises a fresh air fan, a fresh air distributor, an underdrain type air collector, a collecting fan, a cyclone separator, a counter-flow heat exchanger and an oxidation chamber. Fresh air is sent to the temperature regulator through the fresh air fan and mixed with purified hot air in the temperature regulator to enter the fresh air distributor arranged at the top of the plant, an underground canal type air collector is laid on the ground of the plant, air in the underground canal type air collector is sent to the cyclone separator through the collecting fan to be separated out solids and then enters the counter-flow type heat exchanger to be preheated, and the preheated air enters the oxidation chamber to be heated and oxidized. According to the invention, the slightly negative pressure of a factory can be kept by adjusting the collection air volume to be slightly larger than the air supply volume, so that the polluted air can be completely collected and cannot be diffused to the outdoor polluted environment; the oxidation burning method can realize the deep purification of air; the cooling of the deep purified air to a suitable temperature provides clean air for a person-intensive office.

Description

Device for purifying air of plant containing combustible pollutants
Technical Field
The invention relates to the technical field of air purification devices, in particular to a device for purifying air of a workshop containing combustible pollutants.
background
The plant containing combustible pollutant gases or particles not only exposes the operators in the plant to the risks of pollution and explosion, but also can cause the pollutants to enter the atmosphere through diffusion to pollute the environment. The traditional treatment method is to remove pollutants by methods such as solvent absorption or activated carbon adsorption after local collection and then discharge the air into the atmosphere. The disadvantages of this are:
1. The collection effect of local collection is poor;
2. The solvent absorption and adsorption effect is not good, and the air is difficult to purify.
The reason is that the concentration of pollutants in the plant is very low (for example, the styrene concentration specified in the glass fiber reinforced plastics plant is < 50ppm), and the pollutants belong to trace content! While solvent absorption and activated carbon adsorption are mostly used for recovering the useful components in gases with higher concentrations (> 1%) (called solvent recovery). Since the distribution of the contaminants between the gas and the solvent or the activated carbon follows a phase equilibrium, the absorption rate at trace concentrations is very low or not, and in some cases even desorption occurs! But the solvent itself also enters the air following the phase equilibrium portion, creating superimposed pollution of the air.
3. And a new material such as a solvent or active carbon is introduced, so that secondary pollution is caused.
Disclosure of Invention
The invention aims to provide a device for purifying the air of a workshop containing combustible pollutants, which is used for solving the problems in the prior art, and adopts an oxidation incineration method to deeply purify the air of the workshop containing the combustible pollutants, thereby realizing the complete collection and the thorough treatment of the polluted air.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a device for purifying the air of a factory building containing combustible pollutants, which comprises a fresh air fan, a fresh air distributor, an underdrain type air collector, a collecting fan, a cyclone separator, a counter-flow type heat exchanger and an oxidation chamber, wherein fresh air is sent to a temperature regulator through the fresh air fan and then mixed with purified hot air in the temperature regulator to enter the fresh air distributor arranged at the top of the factory building, the underdrain type air collector is laid on the ground of the factory building, the air in the underdrain type air collector is sent to the cyclone separator through the collecting fan to be separated and then enters the counter-flow type heat exchanger to be preheated, and the preheated air enters the oxidation chamber to be heated and oxidized.
preferably, a filter is arranged between the fresh air fan and the temperature regulator, and fresh air is sent to the filter through the fresh air fan and then sent to the temperature regulator after being filtered and purified.
Preferably, the lower part of the fresh air distributor is also provided with a local reinforced air supply fan cover.
Preferably, the top of the underdrain air collector is provided with a collecting hood.
Preferably, the air containing pollutants enters the counter-flow heat exchanger for heat exchange after particulate matters and glass fibers are separated from the air through the cyclone separator; and the separated particles and the glass fiber enter a waste bin.
Preferably, the heat supply source of the oxidation chamber is an electric furnace wire.
Preferably, the purified air after being oxidized and heated in the oxidation chamber returns to the counter-flow heat exchanger to preheat the air containing combustible materials.
Compared with the prior art, the invention has the following technical effects:
1. The device for purifying the air of the plant containing combustible pollutants realizes plug flow replacement of the air of the plant by utilizing the fresh air distributor and the underdrain type air collector. And selecting a collection mode according to the density of the pollutants: if the density of the pollutants is larger than that of the air, an upper fresh air supply and lower collection mode is adopted; if the density of the pollutants is less than that of the air, a lower fresh air supply and an upper collection mode are adopted.
2. And a countercurrent heat exchanger is adopted to realize the thermal coupling heat exchange of air before and after oxidation.
3. The air containing trace combustible pollutants is treated by an oxidation burning method.
4. The oxidized purified air is reused (for heating or cooling to provide indoor purified air).
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view showing the overall structure of an apparatus for purifying air in a plant containing combustible pollutants;
Wherein, 1, a fresh air fan; 2, a filter; 3, a temperature regulator; 4 a fresh air distributor; 5 locally enhancing an air supply fan cover; 6 an underdrain air collector; 7, collecting the fan; 8, a cyclone separator; 9 a waste bin; 10 a counter-flow heat exchanger; 11 oxidizing chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments (taking the production of glass fiber reinforced plastics as an example) of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a device for purifying the air of a workshop containing combustible pollutants, which is used for solving the problems in the prior art, and adopts an oxidation incineration method to deeply purify the air of the workshop containing the combustible pollutants, thereby realizing the complete collection and the thorough treatment of the polluted air.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in figure 1, the invention provides a device for purifying the air of a factory building containing combustible pollutants, wherein the comprehensive treatment and energy reuse of the air of the factory building comprise 5 unit operation systems:
1. The factory building contains pollutant air collection and fresh air supply replacement system.
2. The particles and the glass fiber are collected and recycled by the cyclone separator 8.
3. the most part of the heat of the oxidation incineration process is recovered by a counter-current heat exchanger.
4. An oxidation incineration chamber for supplying heat to the electric furnace.
5. The purified hot air is used for heating.
The device for purifying the air of a workshop containing combustible pollutants comprises the following technical processes:
The fresh air is sent to the filter 2 through the fresh air fan 1, filtered and purified, then sent to the temperature regulator 3, mixed with purified hot air in the temperature regulator 3 to reach a proper temperature and then enters the fresh air distributor 4 at the top of the plant, and the fresh air distributor 4 distributes the fresh air uniformly and flows downwards in a piston flow manner to form main air supply of the plant.
In order to facilitate the operation and the collection, the factory floor is laid with an underdrain type air collector 6. Since styrene is very dense (4 times that of air), it spreads itself from top to bottom over the ground and enters the underdrain air collector 6 under the push of the main air supply flowing downward. The resin particles and glass fiber fibers formed in the operation are also fed into the underdrain air collector 6 by the main air supply from the top to the bottom and are sent to the cyclone separator 8 by the collecting fan 7.
The fresh air distributor 4 is provided with a local enhanced air supply fan cover 5 besides providing plug flow main air supply, if the operation of volatilizing local high-concentration styrene is performed, the local enhanced air supply can be used for blowing the styrene to the ground from top to bottom to enter an underdrain, and the underdrain can also open a corresponding position collection cover to increase the local collection capacity.
After particulate matters and glass fibers are separated from air containing pollutants by the cyclone separator 8, the air enters the counter-flow heat exchanger 10 for preheating, and the separated particulate matters and glass fibers enter the waste bin 9. The counter-flow heat exchanger 10 is the core equipment of the device, more than 90 percent of the heat energy of the oxidation incineration process is obtained by the counter-flow heat exchanger!
The preheated air enters the oxidation chamber 11 to be continuously heated to reach the oxidation temperature of the styrene and the glass fiber reinforced plastic particles for oxidation, and oxidation heat is provided by the electric furnace wires. Since the bulk of the air reaches the oxidation temperature, any combustible material in the air (including the original carbon monoxide and combustible contaminants in the fresh air) is oxidized to carbon dioxide and water, and the air is considered to be pure air. Since the styrene and combustible are present in a micro-scale amount, the oxygen content of the purified air is not affected by their oxidation.
The purified air after oxidation and temperature rise returns to the counter-flow heat exchanger 10 to preheat the air containing combustible, and the temperature of the air is reduced to 70-90 ℃. The heat exchanger is called a thermal coupling heat exchanger because the cold flow and the hot flow of the heat exchanger are both air per se. If the air is available for heating in winter.
The collection method for combustible materials having a density greater than air (e.g. volatile styrene such as glass reinforced plastics) is a collection method for collecting air from above and below. The collection method for combustible materials with density lower than that of air (such as ammonia, carbon monoxide and the like) is a collection method for collecting wind on the lower wind supply side.
According to the invention, the micro negative pressure of a factory can be kept by adjusting the collected air volume to be slightly larger than the fresh air volume, so that the polluted air can be completely collected and cannot be diffused to the outdoor polluted environment; collecting glass fiber reinforced plastic particles and free glass fibers to realize the complete recycling of solids; the oxidation burning method can realize deep purification of air, and pure air can be provided for offices with dense personnel by cooling to a proper temperature.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (7)

1. a device for purifying the air of a plant containing combustible pollutants, which is characterized in that: comprises a fresh air fan, a fresh air distributor, an underdrain type air collector, a collecting fan, a cyclone separator, a counter-flow heat exchanger and an oxidation chamber. Fresh air is sent to the temperature regulator after the fresh air fan and is in the temperature regulator gets into after mixing with the hot-blast entering of purification and arranges at the factory building top the fresh air distributor, the ground of factory building lays dark canal formula air collector, the air in the dark canal formula air collector is sent to cyclone through the collection fan and is got into after the separation the counterflow heat exchanger preheats, and the air after preheating gets into the oxidation chamber intensifies and oxidizes.
2. The apparatus for decontaminating plant air containing combustible pollutants as claimed in claim 1, wherein: a filter is arranged between the fresh air fan and the temperature regulator, and fresh air is delivered to the filter through the fresh air fan and then delivered to the temperature regulator after being filtered and purified.
3. the apparatus for decontaminating plant air containing combustible pollutants as claimed in claim 1, wherein: the lower part of the fresh air distributor is also provided with a local reinforced air supply fan cover.
4. The apparatus for decontaminating plant air containing combustible pollutants as claimed in claim 1, wherein: and a collecting cover is arranged at the top of the underdrain type air collector.
5. The apparatus for decontaminating plant air containing combustible pollutants as claimed in claim 1, wherein: separating particulate matters and glass fibers from air containing pollutants by the cyclone separator, and then, allowing the air to enter the counter-flow heat exchanger for heat exchange; and the separated particles and the glass fiber enter a waste bin.
6. The apparatus for decontaminating plant air containing combustible pollutants as claimed in claim 1, wherein: the heat supply source of the oxidation chamber is an electric furnace wire.
7. The apparatus for decontaminating plant air containing combustible pollutants as claimed in claim 1, wherein: and the purified air after being oxidized and heated in the oxidation chamber returns to the counter-flow heat exchanger to preheat the air containing combustible materials.
CN201910885245.XA 2019-09-19 2019-09-19 Device for purifying air of plant containing combustible pollutants Pending CN110567082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910885245.XA CN110567082A (en) 2019-09-19 2019-09-19 Device for purifying air of plant containing combustible pollutants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910885245.XA CN110567082A (en) 2019-09-19 2019-09-19 Device for purifying air of plant containing combustible pollutants

Publications (1)

Publication Number Publication Date
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Citations (10)

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Publication number Priority date Publication date Assignee Title
JP2005049041A (en) * 2003-07-30 2005-02-24 Dainippon Ink & Chem Inc Flammable waste gas combustion processing method
WO2012063466A1 (en) * 2010-11-09 2012-05-18 バブコック日立株式会社 Exhaust gas treatment method and apparatus
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CN206257681U (en) * 2016-12-08 2017-06-16 宁波远翔节能环保技术有限公司 One kind spraying class baking workshop VOCs exhaust gas purification and treatment devices
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CN108212634A (en) * 2018-03-15 2018-06-29 王野铧 Exhaust treatment system and waste gas processing method
CN108273322A (en) * 2018-03-23 2018-07-13 云汇环保科技南通有限公司 A kind of high efficiency catalytic oxidizing equipment
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Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005049041A (en) * 2003-07-30 2005-02-24 Dainippon Ink & Chem Inc Flammable waste gas combustion processing method
WO2012063466A1 (en) * 2010-11-09 2012-05-18 バブコック日立株式会社 Exhaust gas treatment method and apparatus
CN102580451A (en) * 2011-12-24 2012-07-18 浙江环泰环保设备有限公司 Treatment method for paint spraying waste gas
CN104436946A (en) * 2014-10-27 2015-03-25 盐城工学院 Environment-friendly processing system for coating workshop
CN105289211A (en) * 2015-11-05 2016-02-03 南京格洛特环境工程股份有限公司 Industrial plant heating and dustless and volatile organic chemicals (VOCs) near zero emission process
CN206257681U (en) * 2016-12-08 2017-06-16 宁波远翔节能环保技术有限公司 One kind spraying class baking workshop VOCs exhaust gas purification and treatment devices
CN108195002A (en) * 2018-03-13 2018-06-22 杭州天道环境工程有限公司 A kind of dust proof workshop VOCs purifications reflux fresh air system
CN108212634A (en) * 2018-03-15 2018-06-29 王野铧 Exhaust treatment system and waste gas processing method
CN108273322A (en) * 2018-03-23 2018-07-13 云汇环保科技南通有限公司 A kind of high efficiency catalytic oxidizing equipment
CN109758889A (en) * 2019-02-26 2019-05-17 山东兰陵美酒股份有限公司 A kind of liquor industry workshop VOCs waste gas processing method

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