CN113304579A - VOCs exhaust-gas treatment equipment - Google Patents
VOCs exhaust-gas treatment equipment Download PDFInfo
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- CN113304579A CN113304579A CN202110450807.5A CN202110450807A CN113304579A CN 113304579 A CN113304579 A CN 113304579A CN 202110450807 A CN202110450807 A CN 202110450807A CN 113304579 A CN113304579 A CN 113304579A
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 123
- 238000011282 treatment Methods 0.000 title claims abstract description 56
- 239000002912 waste gas Substances 0.000 claims abstract description 205
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 149
- 238000010521 absorption reaction Methods 0.000 claims abstract description 56
- 238000009423 ventilation Methods 0.000 claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 58
- 238000002485 combustion reaction Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 5
- 238000006555 catalytic reaction Methods 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000011221 initial treatment Methods 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 230000036541 health Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 230000000622 irritating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0438—Cooling or heating systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses VOCs waste gas treatment equipment, and relates to the technical field of VOCs waste gas treatment. In the present invention: one end of the waste gas absorption transverse pipe is provided with a negative pressure fan communicated with a waste gas inlet channel; a negative pressure inner cavity adjacent to the negative pressure fan is arranged in the waste gas absorption transverse pipe; the activated carbon net cover is filled with internal activated carbon; and a peripheral ventilation electromagnetic valve positioned at the second main port of the waste gas absorption transverse pipe is arranged in the waste gas outlet channel. Dispose in the active carbon screen panel and be used for carrying out the heating rod that heats to inside active carbon, one side of active carbon screen panel disposes the temperature sensing module who is used for sensing monitoring heating rod temperature. According to the invention, the phenomenon that the interior activated carbon in the front end area is supersaturated to absorb VOCs waste gas is avoided, the relative adsorption degree of the middle-rear section activated carbon particles is low, and when the activity of the activated carbon in the waste gas absorption transverse pipe is recovered, the activity can be efficiently and uniformly recovered due to the uniform absorption, so that the activity recovery time of the interior activated carbon is shortened.
Description
Technical Field
The invention belongs to the technical field of VOCs waste gas treatment, and particularly relates to VOCs waste gas treatment equipment.
Background
VOCs (volatile organic compounds) are, by definition of the World Health Organization (WHO), various organic compounds having a boiling point of 50 ℃ to 260 ℃ at ambient temperature. In China, VOCs refer to organic compounds with saturated vapor pressure of more than 70Pa at normal temperature and boiling point of below 260 ℃ at normal pressure, or all organic compounds with vapor pressure of more than or equal to 10Pa and volatility at 20 ℃.
Most VOCs have unpleasant special odor and have toxic, irritant, teratogenic and carcinogenic effects, and particularly benzene, toluene, formaldehyde and the like cause great harm to human health. VOCs are important precursors causing urban dust haze and photochemical smog and mainly come from the processes of coal chemical industry, petrochemical industry, fuel coating manufacturing, solvent manufacturing and using and the like.
Therefore, in various industrial production links, it is necessary to treat the VOCs waste gas, and it is a common method to absorb the VOCs waste gas by using activated carbon, but when the activated carbon arranged in the ventilation pipeline absorbs the VOCs waste gas, the activated carbon at the front end first contacts the VOCs waste gas, and the activated carbon at the middle and rear sections contacts the subsequent VOCs waste gas which is not absorbed by the activated carbon at the front end, so that the degree of the VOCs waste gas absorbed by the activated carbon at the front section is greater than that at the middle and rear sections.
However, if the activated carbon is heated for recovery after being absorbed for a certain period of time, the activated carbon in the former stage is too saturated in adsorption degree, and the time required for recovery of the activity is long. If activated carbon activity is restored in a structure in which the device is not replaced, the efficiency of treating the waste gas containing VOCs is affected.
Disclosure of Invention
The invention aims to provide VOCs waste gas treatment equipment, which can prevent the inner activated carbon in the front end area from oversaturating and absorbing VOCs waste gas, and the relative adsorption degree of the middle-rear section activated carbon particles is low, so that when the activated carbon in the waste gas absorption transverse pipe is subjected to activity recovery, the activity can be efficiently and uniformly recovered due to uniform absorption, and the activity recovery time of the inner activated carbon is shortened.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to VOCs waste gas treatment equipment which comprises a waste gas absorption device, wherein a waste gas inlet channel and a waste gas outlet channel are arranged in the waste gas absorption device, one side of the waste gas absorption device is communicated with a first gas inlet pipe communicated with the waste gas inlet channel, a gas inlet electromagnetic valve is arranged on the first gas inlet pipe, the other side of the waste gas absorption device is communicated with a first gas outlet pipe communicated with the waste gas outlet channel, one side of the waste gas absorption device is provided with a backflow gas inlet pipe communicated with the waste gas outlet channel, one side of the waste gas absorption device is provided with a backflow gas outlet pipe communicated with the waste gas inlet channel, and the backflow gas outlet pipe is connected with an organic gas combustion furnace; and a plurality of waste gas absorption transverse pipes positioned between the waste gas inlet channel and the waste gas outlet channel are arranged in the waste gas absorption device.
One end of the waste gas absorption transverse pipe is provided with a negative pressure fan communicated with a waste gas inlet channel; a negative pressure inner cavity adjacent to the negative pressure fan is arranged in the waste gas absorption transverse pipe; an activated carbon mesh cover is arranged in the waste gas absorption transverse pipe, and internal activated carbon is filled in the activated carbon mesh cover; a shell structure surrounding the periphery of the activated carbon mesh cover is arranged in the waste gas absorption transverse pipe, a first main through hole communicated with the activated carbon mesh cover is formed in one side of the shell structure, a second main through hole communicated with the activated carbon mesh cover is formed in the other side of the shell structure, and a plurality of uniform main pipelines communicated with the negative pressure inner cavity are arranged on the shell structure; and a peripheral ventilation electromagnetic valve positioned at the second main port of the waste gas absorption transverse pipe is arranged in the waste gas outlet channel.
Dispose in the active carbon screen panel and be used for carrying out the heating rod that heats to inside active carbon, one side of active carbon screen panel disposes the temperature sensing module who is used for sensing monitoring heating rod temperature.
As a preferred technical scheme of VOCs exhaust-gas treatment equipment of the invention:
an air inlet electromagnetic valve is arranged on the first air inlet pipe, and a backflow electromagnetic valve is arranged on the backflow air outlet pipe; first intake pipe and waste gas inlet channel's one end intercommunication, palirrhea outlet duct and waste gas inlet channel's the other end intercommunication.
As a preferred technical scheme of VOCs exhaust-gas treatment equipment of the invention:
an air outlet electromagnetic valve is arranged on the first air outlet pipe, and a ventilation electromagnetic valve is arranged on the backflow air inlet pipe; the first air outlet pipe is communicated with one end of the waste gas outlet channel, and the backflow air inlet pipe is communicated with the other end of the waste gas outlet channel.
As a preferred technical scheme of VOCs exhaust-gas treatment equipment of the invention:
a plurality of trunk lines that all scatter evenly distribute in the periphery of active carbon screen panel, all scatter and be provided with a plurality of evenly distributed's branch pipe that all scatters on the trunk line, a plurality of branch pipes that all scatter and the inside intercommunication of active carbon screen panel.
As a preferred technical scheme of VOCs exhaust-gas treatment equipment of the invention:
VOCs exhaust-gas treatment equipment is equipped with the primary treatment controller including controlling the platform in controlling the platform, and the primary treatment controller passes through the electrical control circuit and is connected with peripheral ventilation solenoid valve, the solenoid valve that admits air, the solenoid valve that flows backwards, the solenoid valve of giving vent to anger, the solenoid valve of ventilating, heating rod, negative-pressure positive blower and organic gas combustion furnace, and the primary treatment controller passes through data line and is connected with temperature sensing module.
As a preferred technical scheme of VOCs exhaust-gas treatment equipment of the invention:
an active carbon forward absorption control module and an active carbon reverse catalysis control module are arranged in the main treatment controller; setting a temperature control parameter of a heating rod to be 200-400 ℃ in the active carbon forward absorption control module; the temperature control parameter of the heating rod is set to be 800-900 ℃ in the activated carbon reverse catalysis-out control module.
The invention relates to a control system of VOCs waste gas treatment equipment, which specifically comprises the following contents:
in the VOCs waste gas treatment process, the VOCs waste gas treatment process is divided into VOCs waste gas forward discharge control and VOCs waste gas reverse combustion control;
(1) positive discharge control of VOCs exhaust gas:
an air inlet electromagnetic valve on the first air inlet pipe and an air outlet electromagnetic valve on the first air outlet pipe are opened, a peripheral air ventilation electromagnetic valve is opened, and a backflow electromagnetic valve on the backflow air outlet pipe and an air ventilation electromagnetic valve on the backflow air inlet pipe are closed; VOCs waste gas enters a waste gas inlet channel from a first gas inlet pipe, and a main processing controller drives and controls a plurality of negative pressure fans to suck gas in a position matching mode; VOCs waste gas enters the negative pressure inner cavity from the negative pressure fan, a part of the waste gas enters the activated carbon net cover from the first main through hole, and the rest waste gas enters the uniform dispersion main pipeline and is nodulized by the uniform dispersion branch pipe of the uniform dispersion main pipeline to enter the activated carbon net cover; VOCs waste gas is discharged into the waste gas outlet channel by the second main port and the peripheral ventilation electromagnetic valve after passing through the internal activated carbon area, and is discharged from the first gas outlet pipe.
(2) VOCs waste gas reverse combustion control:
a backflow electromagnetic valve on the backflow air outlet pipe and a ventilation electromagnetic valve on the backflow air inlet pipe are opened, a peripheral ventilation electromagnetic valve is opened, and an air inlet electromagnetic valve on the first air inlet pipe and an air outlet electromagnetic valve on the first air outlet pipe are closed; the main treatment controller drives and controls the heating rod to a certain temperature, VOCs waste gas sediments adsorbed by the activated carbon are boiled and evaporated, the main treatment controller simultaneously drives and controls the negative pressure fan to exhaust reversely, waste gas which absorbs boiling and evaporating in the transverse pipe is reversely discharged into a waste gas inlet channel, and the waste gas enters the organic gas combustion furnace through the reverse flow outlet pipe.
As a preferred technical scheme of the VOCs exhaust-gas treatment equipment control system of the invention:
in the positive discharge control process of VOCs waste gas, the distances between a plurality of negative pressure fans and the openings of the first air inlet pipe on the side wall of the waste gas inlet channel are sequentially set as
Wherein H1＜H2＜...＜HN。
Setting the corresponding driving power of the main processing controller to each negative pressure fanIn turn is
Any one of the negative pressure fans exists, and the distance parameter is HXIn the presence of the driving power P of the negative-pressure fanX∝HX。
As a preferred technical scheme of the VOCs exhaust-gas treatment equipment control system of the invention:
and the first air outlet pipe and the reverse flow air outlet pipe are provided with gas concentration detection modules for detecting the gas concentration of VOCs.
In the forward exhaust control of VOCs waste gas in-process, when the gas concentration detection module on first outlet duct detected VOCs gas concentration and is less than a definite value, main treatment controller stopped VOCs waste gas forward discharge, switched the control mode into VOCs waste gas reverse combustion.
In VOCs waste gas reverse combustion control process, when the gaseous concentration detection module on the palirrhea outlet duct detected VOCs gaseous concentration and is less than a definite value, main treatment controller stopped VOCs waste gas reverse combustion, switched the control mode into VOCs waste gas forward discharge.
As a preferred technical scheme of the VOCs exhaust-gas treatment equipment control system of the invention:
and in the switching process of the forward discharge control of the VOCs waste gas and the reverse combustion control of the VOCs waste gas, the peripheral ventilation electromagnetic valve is in a closed state.
The invention has the following beneficial effects:
1. according to the invention, the multi-path shunting waste gas absorption transverse pipes are built in the VOCs waste gas treatment equipment, and gas nodes are injected into the internal activated carbon interval in each waste gas absorption transverse pipe in a position mode, so that the internal activated carbon at each position in the waste gas absorption transverse pipe can achieve synchronous and balanced waste gas absorption, the VOCs waste gas absorption efficiency is guaranteed to a certain extent, the situation that the internal activated carbon in the front end area is supersaturated to absorb VOCs waste gas and the relative adsorption degree of the middle and rear section activated carbon particles is low is avoided, when the activity of the activated carbon in the waste gas absorption transverse pipes is recovered, the activity can be efficiently and uniformly recovered due to the balanced absorption, and the activity recovery time of the internal activated carbon is shortened;
2. according to the invention, in the VOCs waste gas treatment process, the VOCs waste gas forward discharge control and the VOCs waste gas reverse combustion control are adopted, so that bidirectional VOCs waste gas absorption treatment is realized, and the treatment efficiency of VOCs waste gas is improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view showing the overall structure of a VOCs waste gas treatment apparatus according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the flow direction of the VOCs waste gas treatment device during the forward discharge of VOCs waste gas in the present invention;
FIG. 4 is a schematic view of the flow direction of the VOCs waste gas treatment device in the VOCs waste gas reverse combustion process in accordance with the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a waste gas absorption unit; 2-horizontal waste gas absorption pipe; 3-peripheral ventilation electromagnetic valve; 4-organic gas combustion furnace;
101-waste gas inlet channel, 102-waste gas outlet channel, 1011-first inlet pipe, 1012-inlet electromagnetic valve, 1013-reverse flow outlet pipe, 1014-reverse flow electromagnetic valve, 102-waste gas outlet channel, 1021-first outlet pipe, 1022-outlet electromagnetic valve, 1023-reverse flow inlet pipe, 1024-aeration electromagnetic valve;
201-a negative pressure fan, 202-a negative pressure inner cavity, 203-an activated carbon net cover, 204-a first main port, 205-a uniform dispersion main pipe, 206-a uniform dispersion branch pipe, 207-a second main port, 208-a heating rod, 209-a temperature sensing module and 210-internal activated carbon.
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 of the present invention, and not all of the 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.
Example one
The waste gas absorption device 1 comprises a waste gas inlet channel 101 and a waste gas outlet channel 102, one side of the waste gas absorption device 1 is communicated with a first air inlet pipe 1011, and the first air inlet pipe 1011 is communicated with the waste gas inlet channel 101.
An air inlet electromagnetic valve 1012 is arranged on the first air inlet pipe 1011, the other side of the waste gas absorption device 1 is communicated with a first air outlet pipe 1021, and the first air outlet pipe 1021 is communicated with the waste gas outlet channel 102.
An air inlet electromagnetic valve 1012 is arranged on the first air inlet pipe 1011, a backflow electromagnetic valve 1014 is arranged on the backflow air outlet pipe 1013, and the first air inlet pipe 1011 and the backflow air outlet pipe 1013 are connected at two ends of the waste gas inlet channel 101 in a distributed manner.
An air outlet electromagnetic valve 1022 is arranged on the first air outlet pipe 1021, an air ventilation electromagnetic valve 1024 is arranged on the backflow air inlet pipe 1013, and the first air outlet pipe 1021 and the backflow air inlet pipe 1013 are connected to two ends of the waste gas outlet channel 102 in a distributed manner.
One side of the waste gas absorption device 1 is provided with a backflow inlet pipe 1013 communicated with the waste gas outlet channel 102, one side of the waste gas absorption device 1 is provided with a backflow outlet pipe 1013 communicated with the waste gas inlet channel 101, and the backflow outlet pipe 1013 is connected with an organic gas combustion furnace 2.
Example two
Be provided with a plurality of waste gas absorption violently pipes 2 that are located between waste gas inlet channel and the waste gas outlet channel 102 in the waste gas absorbing device 1, including negative pressure fan 201 in the waste gas absorption violently pipe 2, negative pressure fan 201 and waste gas inlet channel 101 intercommunication, including negative pressure inner chamber 202 in the waste gas absorption violently pipe 2, negative pressure inner chamber 202 is adjacent with negative pressure fan 201, includes activated carbon screen panel 203 in the waste gas absorption violently pipe 2, the activated carbon screen panel 203 intussuseption is filled with inside active carbon 210.
In the waste gas absorbs violently pipe 2, dispose the envelope structure that surrounds in activated carbon screen panel 203 periphery, first main opening 204 has been seted up to this envelope structure one side, and first main opening 204 is linked together with activated carbon screen panel 203, and second main opening 207 has been seted up to this envelope structure's opposite side, and second main opening 207 is linked together with activated carbon screen panel 203, is provided with a plurality of trunk pipes 205 that all scatter on this envelope structure, and trunk pipe 205 that all scatters is linked together with negative pressure inner chamber 202.
A plurality of the main pipes 205 that all scatter are evenly arranged in the periphery of active carbon screen panel 203, all scatter being provided with a plurality of evenly distributed's branch pipe 206 on the main pipe 205 that all scatters, a plurality of branch pipes 206 that all scatters communicate with active carbon screen panel 203 is inside.
A plurality of peripheral ventilation electromagnetic valves 3 are arranged in the exhaust gas outlet channel 102, and the peripheral ventilation electromagnetic valves 3 are positioned at the second main port 207 of the exhaust gas absorption transverse pipe 2;
the activated carbon mesh enclosure 203 is internally provided with a heating rod 208 for heating the internal activated carbon 210, one side of the activated carbon mesh enclosure 203 is provided with a temperature sensing module 209, and the temperature sensing module 209 is used for sensing and monitoring the temperature of the heating rod 208.
EXAMPLE III
VOCs exhaust-gas treatment equipment includes and controls the platform, is equipped with the main processing controller in controlling the platform, and the main processing controller passes through the electric control circuit and is connected with peripheral ventilation solenoid valve 3, air inlet solenoid valve 1012, backflow solenoid valve 1014, air outlet solenoid valve 1022, ventilation solenoid valve 1024, heating rod 208, negative-pressure air fan 201 and organic gas combustion furnace 2, and the main processing controller passes through the data link and is connected with temperature sensing module 209.
Example four
During VOCs waste gas treatment, including VOCs waste gas forward discharge control:
an air inlet electromagnetic valve 1012 on the first air inlet pipe 1011 and an air outlet electromagnetic valve 1022 on the first air outlet pipe 1021 are opened, and a peripheral ventilation electromagnetic valve 3 is opened, so that the opening of a discharge passage of VOCs waste gas is ensured.
And a backflow electromagnetic valve 1014 on the backflow outlet pipe 1013 and a ventilation electromagnetic valve 1024 on the backflow inlet pipe 1013 are closed to block a circulation passage of the VOCs waste gas reverse combustion gas.
VOCs waste gas enters the waste gas inlet channel 101 from the first gas inlet pipe 1011, and the main processing controller drives and controls the plurality of negative pressure fans 201 to suck gas in a position matching mode. In order to ensure that the amount of the VOCs waste gas entering the horizontal pipe 2 is relatively balanced, after the VOCs waste gas enters the bottom of the waste gas inlet channel 101, the driving and controlling powers of the negative pressure fans 201 of the horizontal pipes 2 are different in waste gas absorption at different positions, and the driving and controlling power of the negative pressure fans 201 which are farther away from the bottom of the waste gas inlet channel 101 is higher. Any one of the negative pressure fans 201 is set, and the distance parameter is HXThere is a driving power P of the negative pressure fan 201X∝HX。
Negative-pressure air blower 201 starts, and VOCs waste gas is inhaled negative pressure inner chamber 202, and wherein partly waste gas gets into activated carbon net cover 203 from first main port 204 in, and all the other waste gases get into and all disperse main pipe 205, get into activated carbon net cover 203 through a plurality of branch pipes 206 that all disperse in, contact waste gas and each section position of inside active carbon 210.
After passing through the area of the internal activated carbon 210, the VOCs waste gas is discharged into the waste gas outlet passage 102 through the second main port 207 and the peripheral ventilation solenoid valve 3, and then discharged from the first outlet pipe 1021.
EXAMPLE five
In the VOCs waste gas treatment process, including VOCs waste gas reverse combustion control:
and a backflow electromagnetic valve 1014 on the backflow outlet pipe 1013 and a ventilation electromagnetic valve 1024 on the backflow inlet pipe 1013 are opened, and a peripheral ventilation electromagnetic valve 3 is opened to ensure that a VOCs waste gas reverse channel is opened.
An air inlet electromagnetic valve 1012 on the first air inlet pipe 1011 and an air outlet electromagnetic valve 1022 on the first air outlet pipe 1021 are closed, so that a discharge passage of VOCs waste gas is blocked.
The main process controller controls the heating rod 208 to heat, and the VOCs waste gas sediment adsorbed in the internal activated carbon 210 boils and evaporates.
The main processing controller controls the negative pressure fan 201 to reversely exhaust, reversely discharge the boiling evaporated waste gas into the waste gas inlet channel 101, and then enter the organic gas combustion furnace 2 through the reverse flow outlet pipe 1013, and the organic gas combustion furnace 2 performs centralized combustion on the high-concentration waste gas.
EXAMPLE six
An active carbon forward absorption control module and an active carbon reverse catalysis control module are arranged in the main processing controller, a temperature control parameter of the heating rod 208 is set to be 200-400 ℃ in the active carbon forward absorption control module, and a temperature control parameter of the heating rod 208 is set to be 800-900 ℃ in the active carbon reverse catalysis control module.
In the forward exhaust control of VOCs waste gas in-process, when the gas concentration detection module on first outlet duct 1021 detects VOCs gas concentration and is less than a definite value, the main treatment controller stops VOCs waste gas forward exhaust, switches the control mode into VOCs waste gas reverse combustion.
In the reverse burning control process of VOCs waste gas, when the gas concentration detection module on the palirrhea outlet duct 1013 detects that VOCs gas concentration is less than a definite value, main processing controller stops VOCs waste gas reverse burning, switches the control mode into VOCs waste gas forward discharge.
In the description herein, references to the terms "embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a VOCs exhaust-gas treatment equipment, includes waste gas absorbing device (1), be equipped with waste gas inlet channel (101) and waste gas outlet channel (102) in waste gas absorbing device (1), one side intercommunication of waste gas absorbing device (1) has first intake pipe (1011) that are linked together with waste gas inlet channel (101), dispose air inlet solenoid valve (1012) on first intake pipe (1011), the opposite side intercommunication of waste gas absorbing device (1) has first outlet duct (1021) that are linked together with waste gas outlet channel (102), its characterized in that:
a backflow inlet pipe (1013) communicated with the waste gas outlet channel (102) is arranged at one side of the waste gas absorption device (1), a backflow outlet pipe (1013) communicated with the waste gas inlet channel (101) is arranged at one side of the waste gas absorption device (1), and the backflow outlet pipe (1013) is connected with an organic gas combustion furnace (2);
a plurality of transverse waste gas absorption pipes (2) positioned between the waste gas inlet channel and the waste gas outlet channel (102) are arranged in the waste gas absorption device (1);
one end of the waste gas absorption transverse pipe (2) is provided with a negative pressure fan (201) communicated with a waste gas inlet channel (101);
a negative pressure inner cavity (202) adjacent to the negative pressure fan (201) is arranged in the waste gas absorption transverse pipe (2);
an activated carbon net cover (203) is arranged in the waste gas absorption transverse pipe (2), and internal activated carbon (210) is filled in the activated carbon net cover (203);
a shell structure surrounding the periphery of the activated carbon net cover (203) is arranged in the waste gas absorption transverse pipe (2), a first main through hole (204) communicated with the activated carbon net cover (203) is formed in one side of the shell structure, a second main through hole (207) communicated with the activated carbon net cover (203) is formed in the other side of the shell structure, and a plurality of uniform main pipelines (205) communicated with the negative pressure inner cavity (202) are arranged on the shell structure;
a peripheral ventilation electromagnetic valve (3) positioned at the position of a second main port (207) of the waste gas absorption transverse pipe (2) is arranged in the waste gas outlet channel (102);
dispose heating rod (208) that are used for heating inside active carbon (210) in active carbon screen panel (203), one side of active carbon screen panel (203) is disposed and is used for sensing the temperature sensing module (209) of monitoring heating rod (208) temperature.
2. A VOCs effluent treatment plant as claimed in claim 1, wherein:
an air inlet electromagnetic valve (1012) is arranged on the first air inlet pipe (1011), and a backflow electromagnetic valve (1014) is arranged on the backflow air outlet pipe (1013);
first intake pipe (1011) and the one end intercommunication of waste gas inlet channel (101), palirrhea outlet duct (1013) and the other end intercommunication of waste gas inlet channel (101).
3. A VOCs effluent treatment plant as claimed in claim 1, wherein:
an air outlet electromagnetic valve (1022) is arranged on the first air outlet pipe (1021), and an air ventilation electromagnetic valve (1024) is arranged on the backflow air inlet pipe (1013);
the first air outlet pipe (1021) is communicated with one end of the waste gas outlet channel (102), and the backflow air inlet pipe (1013) is communicated with the other end of the waste gas outlet channel (102).
4. A VOCs effluent treatment plant as claimed in claim 1, wherein:
a plurality of main pipes (205) of scattering are evenly distributed in the periphery of active carbon screen panel (203), be provided with a plurality of evenly distributed's branch pipe (206) of scattering on the main pipe (205) of scattering, a plurality of branch pipes (206) of scattering and active carbon screen panel (203) inside intercommunication.
5. A VOCs effluent treatment plant as claimed in claim 1, wherein:
VOCs exhaust-gas treatment equipment is including controlling the platform, is equipped with the main treatment controller in controlling the platform, and the main treatment controller passes through the electric control circuit and is connected with peripheral ventilation solenoid valve (3), air inlet solenoid valve (1012), backflow solenoid valve (1014), air outlet solenoid valve (1022), ventilation solenoid valve (1024), heating rod (208), negative-pressure air fan (201) and organic gas combustion furnace (2), and the main treatment controller passes through data line and is connected with temperature sensing module (209).
6. A VOCs exhaust treatment device in accordance with claim 5, wherein:
an active carbon forward absorption control module and an active carbon reverse catalysis control module are arranged in the main treatment controller;
setting a temperature control parameter of a heating rod (208) to be 200-400 ℃ in the active carbon forward absorption control module;
the temperature control parameter of the heating rod (208) in the activated carbon reverse catalysis control module is set to be 800-900 ℃.
7. The utility model provides a VOCs exhaust-gas treatment equipment's control system which characterized in that:
in the VOCs waste gas treatment process, the VOCs waste gas treatment process is divided into VOCs waste gas forward discharge control and VOCs waste gas reverse combustion control;
(1) positive discharge control of VOCs exhaust gas:
an air inlet electromagnetic valve on the first air inlet pipe and an air outlet electromagnetic valve on the first air outlet pipe are opened, a peripheral air ventilation electromagnetic valve is opened, and a backflow electromagnetic valve on the backflow air outlet pipe and an air ventilation electromagnetic valve on the backflow air inlet pipe are closed;
VOCs waste gas enters a waste gas inlet channel from a first gas inlet pipe, and a main processing controller drives and controls a plurality of negative pressure fans to suck gas in a position matching mode;
VOCs waste gas enters the negative pressure inner cavity from the negative pressure fan, a part of the waste gas enters the activated carbon net cover from the first main through hole, and the rest waste gas enters the uniform dispersion main pipeline and is nodulized by the uniform dispersion branch pipe of the uniform dispersion main pipeline to enter the activated carbon net cover;
VOCs waste gas passes through the internal activated carbon area, is discharged into the waste gas outlet channel through the second main port and the peripheral ventilation electromagnetic valve, and is discharged from the first gas outlet pipe;
(2) VOCs waste gas reverse combustion control:
a backflow electromagnetic valve on the backflow air outlet pipe and a ventilation electromagnetic valve on the backflow air inlet pipe are opened, a peripheral ventilation electromagnetic valve is opened, and an air inlet electromagnetic valve on the first air inlet pipe and an air outlet electromagnetic valve on the first air outlet pipe are closed;
the main treatment controller drives and controls the heating rod to a certain temperature, VOCs waste gas sediments adsorbed by the activated carbon are boiled and evaporated, the main treatment controller simultaneously drives and controls the negative pressure fan to exhaust reversely, waste gas which absorbs boiling and evaporating in the transverse pipe is reversely discharged into a waste gas inlet channel, and the waste gas enters the organic gas combustion furnace through the reverse flow outlet pipe.
8. A control system for a VOCs exhaust treatment device as recited in claim 7, wherein:
in the positive discharge control process of VOCs waste gas, the distances between a plurality of negative pressure fans and the openings of the first air inlet pipe on the side wall of the waste gas inlet channel are sequentially set as
Wherein H1＜H2＜...＜HN；
The driving power of the main processing controller to each negative pressure fan is set to be
Any one of the negative pressure fans exists, and the distance parameter is HXIn the presence of the driving power P of the negative-pressure fanX∝HX。
9. A control system for a VOCs exhaust treatment device as recited in claim 7, wherein:
the first air outlet pipe and the reverse flow air outlet pipe are both provided with a gas concentration detection module for detecting the concentration of VOCs gas;
in the forward discharge control process of the VOCs waste gas, when the gas concentration detection module on the first gas outlet pipe detects that the gas concentration of the VOCs is lower than a certain value, the main processing controller stops the forward discharge of the VOCs waste gas, and the control mode is switched to VOCs waste gas reverse combustion;
in VOCs waste gas reverse combustion control process, when the gaseous concentration detection module on the palirrhea outlet duct detected VOCs gaseous concentration and is less than a definite value, main treatment controller stopped VOCs waste gas reverse combustion, switched the control mode into VOCs waste gas forward discharge.
10. A control system for a VOCs exhaust treatment device as recited in claim 7, wherein:
and in the switching process of the forward discharge control of the VOCs waste gas and the reverse combustion control of the VOCs waste gas, the peripheral ventilation electromagnetic valve is in a closed state.
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| CN202110450807.5A CN113304579A (en) | 2021-04-26 | 2021-04-26 | VOCs exhaust-gas treatment equipment |
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| CN202110450807.5A CN113304579A (en) | 2021-04-26 | 2021-04-26 | VOCs exhaust-gas treatment equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205867916U (en) * | 2016-08-03 | 2017-01-11 | 天元康宇（天津）环保科技股份有限公司 | Adsorb desorption catalytic combustion integration equipment |
| CN206073347U (en) * | 2016-08-31 | 2017-04-05 | 上海诺佛尔生态科技股份有限公司 | Fresh-air volume VMC (Ventilation Mechanical Control System) in a balanced way |
| CN212236596U (en) * | 2019-10-16 | 2020-12-29 | 天能炭素(江苏)有限公司 | On-line measuring device based on active carbon adsorption administers VOCs |
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2021
- 2021-04-26 CN CN202110450807.5A patent/CN113304579A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205867916U (en) * | 2016-08-03 | 2017-01-11 | 天元康宇（天津）环保科技股份有限公司 | Adsorb desorption catalytic combustion integration equipment |
| CN206073347U (en) * | 2016-08-31 | 2017-04-05 | 上海诺佛尔生态科技股份有限公司 | Fresh-air volume VMC (Ventilation Mechanical Control System) in a balanced way |
| CN212236596U (en) * | 2019-10-16 | 2020-12-29 | 天能炭素(江苏)有限公司 | On-line measuring device based on active carbon adsorption administers VOCs |
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