CN109675404A - A kind of VOCs waste-gas adsorbant desorption pyrolysis oven operation method - Google Patents
A kind of VOCs waste-gas adsorbant desorption pyrolysis oven operation method Download PDFInfo
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- CN109675404A CN109675404A CN201910182005.3A CN201910182005A CN109675404A CN 109675404 A CN109675404 A CN 109675404A CN 201910182005 A CN201910182005 A CN 201910182005A CN 109675404 A CN109675404 A CN 109675404A
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- 238000003795 desorption Methods 0.000 title claims abstract description 62
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 61
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002912 waste gas Substances 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 56
- 239000003463 adsorbent Substances 0.000 claims abstract description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011449 brick Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims abstract description 11
- 238000004064 recycling Methods 0.000 claims abstract description 7
- 238000007353 oxidative pyrolysis Methods 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 239000002918 waste heat Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 29
- 238000001179 sorption measurement Methods 0.000 description 25
- 229910052799 carbon Inorganic materials 0.000 description 23
- 239000004744 fabric Substances 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 230000001413 cellular effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 229910000632 Alusil Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3425—Regenerating or reactivating of sorbents or filter aids comprising organic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
-
- 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
-
- 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
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- 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
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
-
- 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
-
- 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
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to environmental protection technical fields, and in particular to a kind of VOCs waste-gas adsorbant desorption pyrolysis oven operation method.It is characterized in that: starting feeding system is fed to perpendicular road, adsorbent is erecting continuous moving in road from top to bottom under gravity, it infuses wind header and the recycling tail gas of the discharge of quirk is purged to the adsorbent erected in road, it is mixed again with the VOCs exhaust gas of desorption and pyrolysis chamber's oxidative pyrolysis is sent to by desorption chamber bottom double-edged fine-toothed comb brick, high-temperature flue gas is sent to pyrolysis chamber through collection flue and mixes with the VOCs exhaust gas of desorption, the excessive oxygen in high-temperature flue gas is oxidized pyrolysis herein, its tail gas flows into smoke evacuation header, then to smoke stack emission after waste heat recycles.
Description
Technical field
The present invention relates to environmental protection technical fields, and in particular to a kind of VOCs waste-gas adsorbant desorption pyrolysis oven operation side
Method.
Background technique
The gaseous pollutant of industrial discharge is the main source of air environmental pollution object, and wherein volatile organic compounds is useless
Gas (VOCs) is the gaseous pollutant all to environment with serious harm effect, while being also to influence operator in workplace
Health occupational source, it derives from the chemical work such as paint, coating, coating, lubricating oil, rubber extensively
Industry.Since it acts on the considerable damage of human body and natural environment, country has put into effect relevant laws and regulations and it is administered and is discharged
Carry out strict control.The currently used processing method of VOCs treatment technology has combustion method, chemical oxidization method, chemical absorbing
Method, absorption method, bioanalysis etc..Since the VOCs exhaust gas discharged in actual production process is the gaseous pollutant of low concentration, often
It is administered using absorption method, but after adsorbent absorption VOCs saturation, becomes solid waste pollutant, common practice, which is used, to be added
The mode of heat is by its desorption and regeneration.(number of patent application 201210077796.1, patent name are a kind of use to Chinese invention patent
In the electrothermal purifying filter element of Wind Volume VOCs waste gas pollution control and treatment) disclose a kind of electrothermal for Wind Volume VOCs waste gas pollution control and treatment
Purifying filter element, including building enclosure and its internal adsorption bed loaded, it is characterised in that: outside the electrothermal purifying filter element
The box-type shaped polyhedron structure parallel for air intake surface, outlet air surface is seen, air intake surface, outlet air surface are one or more layers porous sieve plate or sieve
Net, the building enclosure include hermetic unit and above-mentioned air intake surface, outlet air surface；Adsorption bed is by active carbon eyelet fabric or more
Mesoporous activated carbon fiber cloth is formed by stacking by plane compression, and adsorption bed any two opposing end surface or close position are equipped with
Electrode A and electrode B can be passed through electric current to adsorption bed, be equipped with galvanic couple in adsorption bed, absorption is tested during electrothermal heating
The temperature of bed；Alternatively, the electrothermal purifying filter element appearance is cylindrical body, building enclosure is by inner cylinder, end cap and outer cylinder
Body composition, inner cylinder and outer barrel are respectively air intake surface and outlet air surface, and inner cylinder is hollow porous cylinder closed at one end,
On be closely wound active carbon eyelet fabric or porous activated carbon fiber cloth and form adsorption bed, outer barrel by one or more layers it is netted or
Porous material is made, and electrode A and electrode B is arranged using end cap as electrode or in adsorption bed upper and lower end face or close position,
It can be passed through electric current to adsorption bed, galvanic couple is set in adsorption bed, the temperature of adsorption bed is tested during electrothermal heating；Institute
The active carbon eyelet fabric shape of a mesh stated is that round, ellipse or polygon, the internal diameter in two holes of longitudinal arbitrary neighborhood are greater than
Its hole wall forms adsorption bed in such a way that longitudinal direction is closely wound or plane compresses superposition；Or the two of lateral upper arbitrary neighborhood
The internal diameter in a hole is greater than its hole wall, forms adsorption bed in such a way that transverse direction is closely wound or plane compresses superposition；Described
Porous activated carbon fiber cloth, the shape in hole are that round, ellipse or polygon, the internal diameter in two holes of longitudinal arbitrary neighborhood are greater than
Its pitch of holes forms adsorption bed in such a way that longitudinal direction is closely wound or plane compresses superposition；Or lateral upper arbitrary neighborhood
The internal diameter in two holes is greater than its pitch of holes, forms adsorption bed in such a way that transverse direction is closely wound or plane compresses superposition；Or
Person, the porous activated carbon fiber cloth, the shape in hole are one of strip, X-shaped, cross, crescent, arc, L shape
Or it is a variety of, circulation of embarking on journey along longitudinal direction occurs, and the immediate hole in position is in both direction in length and breadth in any one hole row adjacent thereto
Projection have coincidence, using it is vertical or horizontal be closely wound or plane compress superposition by the way of form adsorption bed；Or only exist
Projection in transverse direction has a coincidence, and the projected length of hole horizontally be greater than the projection between laterally adjacent two hole in the longitudinal direction away from
From, or only projection in the longitudinal direction has coincidence, and the projected length of hole in the longitudinal direction is greater than between longitudinally adjacent two hole horizontally
Projector distance, using vertical and horizontal alternately be closely wound or plane compress superposition by the way of form adsorption bed.Middle promulgated by the State Council
(number of patent application 201510779318.9, patent name are a kind of combined type VOCs Adsorption Concentration runner and its make bright patent
With method) disclose a kind of combined type VOCs Adsorption Concentration runner and its application method, it is characterised in that: and it is turned by molecular sieve
Wheel and cellular activated carbon runner it is coaxial, with made of diameter docking, the cellular activated carbon runner is located at VOCs inlet side, each
It is laid with adsorption zone, desorption area and cooling zone on runner, isolation ring is provided at the docking of two runners, the isolation ring is used
It is separated in by the adsorption zone of two runners, desorption area and cooling zone, and cloth wind, reduction windage again；The molecular sieve runner is
By way of spraying, elution or dipping VOCs adsorbent is attached to and to be obtained on cellular web.
The prior art one proposes building enclosure for Wind Volume VOCs waste gas pollution control and treatment practical problem and air intake surface, outlet air surface are
The electrothermal purifying filter element technical solution of the adsorption bed of one or more layers porous sieve plate or sieve filling, but inhaling
Electrothermal purifying filter element, which how is replaced, in normal production after attached VOCs exhaust gas saturation does not propose solution；The prior art two
It proposes to adsorb VOCs exhaust gas using molecular sieve runner and cellular activated carbon runner for VOCs waste gas pollution control and treatment practical problem, take off
Attached, concentration, burning technical solution, is re-replaced after VOCs exhaust gas adsorption saturation is solved using the method for mechanical turning wheel
The technical solution of adsorbent is undoubtedly feasible, but this kind of dynamic equipment of runner has to solve sealing problem, especially runner
The problem of VOCs exhaust gas is leaked because of seal failure under the conditions of continuous production in replacement process.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of VOCs waste-gas adsorbants, and pyrolysis oven operation method is desorbed,
It is characterized in that:
Step 1, the quirk into desorption pyrolysis furnace body fill high aluminium ball filler, and high aluminium ball filler particles 20~25mm of diameter leads to
It crosses feeding system and conveys adsorbent to be desorbed, cutting collection flue test desorption pyrolysis furnace body to the desorption pyrolysis road furnace body Zhong Shu
Then working condition introduces air-flow through note wind header and purges from storage tank to perpendicular road, it is ensured that air-flow is not scurried out simultaneously from perpendicular road bottom
It passes through double-edged fine-toothed comb brick and flows into smoke evacuation header through quirk.
Step 2, desorption, which is pyrolyzed near the quirk and perpendicular road of furnace body, builds block, and partition arch in centre divides desorption pyrolysis furnace body
For upper and lower twoth area, pyrolysis zone is desorbed in the area Ji Shang, and quirk is divided into two upper and lower chambers i.e. pyrolysis chamber, regenerative chamber, will erected by the heat-accumulating area Xia Qu
Road is divided into two upper and lower chambers i.e. desorption chamber, sealing room, and high-temperature flue gas enters heating desorption pyrolysis furnace body from collection flue and keeps its temperature
Degree adjusts the excess air coefficient of high-temperature flue gas at 260~280 DEG C, makes its oxygen content not less than 14%.
Step 3, starting feeding system are fed to perpendicular road, and adsorbent is under gravity from top to bottom in perpendicular Dao Neilian
The recycling tail gas of the discharge of quirk is purged the adsorbent in perpendicular road by continuous movement, note wind header, then mixed with the VOCs exhaust gas of desorption
It closes and pyrolysis chamber's oxidative pyrolysis is sent to by desorption chamber bottom double-edged fine-toothed comb brick, high-temperature flue gas is sent to pyrolysis chamber and desorption through collecting flue
The mixing of VOCs exhaust gas, the excessive oxygen in high-temperature flue gas is oxidized pyrolysis herein, and tail gas flows into smoke evacuation header, then through remaining
To smoke stack emission after recuperation of heat.
Inventors have found that adsorbent is the basis that VOCs exhaust gas adsorption separation process is achieved, at present in VOCs exhaust gas
The common adsorbent in adsorbing separation field mainly has molecular sieve, active carbon class, Alusil class, carbon molecules class etc..Actually make
With in the process, active carbon is preferentially used because having following features: one it be for complete separation in purification process
The industrial adsorbents for removing moisture in advance are not needed uniquely；Secondly it has great inner surface, active carbon is than other adsorbents
It can more nonpolar and low pole the organic molecules of absorption；Thirdly the heat of adsorption of active carbon or the intensity of key are usually than other suctions
Attached dose low, thus is relatively easy to the parsing for being adsorbed molecule, and energy consumption when adsorbent reactivation is relatively low.Above-mentioned paint, coating,
The chemical industry such as coating, lubricating oil, rubber generate the usual humidity of VOCs exhaust gas it is higher, typical pollutant for example benzene, paraxylene,
Carbon tetrachloride is the organic molecule of nonpolarity and low pole, must be using active carbon to its adsorption cleaning.
Inventors have found that VOCs exhaust gas is after acticarbon is adsorbed to saturation generally using the method desorption of heating
Regeneration, generally can not be regenerated by way of directly contacting with high-temperature flue gas, because having adsorbed the active carbon kindling of VOCs exhaust gas
Point is lower, and active carbon is easily oxidized (burning), needs to realize that active carbon is desorbed by the way of indirect heating, is pyrolyzed in desorption
In furnace, the VOCs exhaust gas of desorption is brought out to be mixed with high-temperature flue gas, and contaminant component, that is, organic molecule in VOCs exhaust gas is by oxygen
Change (burning), generates the CO of environmental sound2、H2O；Active carbon is moved to chain conveyer grate, will set through VOCs exhaust gas environmental purification
Recycling tail gas is discharged after applying processing, active carbon is purged with tail gas and is cooled down, to realize acticarbon desorption and regeneration.
Inventors have found that volatile organic compounds (VOCs) be generally referred to as fusing point lower than room temperature and boiling point 50~
Volatile organic compounds between 250 DEG C, that is to say, that the desorption temperature of adsorbent should be greater than 250 DEG C, adsorbent after desorption
It must carry out cooling and reach room temperature, to complete the process of desorption and regeneration, heel row will be handled through VOCs exhaust gas environmental purification facility
Recycling tail gas is put as coolant, tail gas is undoubtedly made to obtain high-value-use and relatively inexpensive.
Inventors have found that the desorption pyrolysis oven design of VOCs waste-gas adsorbant has quirk and perpendicular road, quirk is for high-temperature flue gas stream
It is logical, it erects road and falls for adsorbent is mobile, build block near quirk and perpendicular road.Desorption pyrolysis furnace body is divided into up and down by centre partition arch
Pyrolysis zone, the heat-accumulating area Xia Qu is desorbed in twoth area, the area Ji Shang.Corresponding quirk is also classified into two upper and lower chambers, and lower room is regenerative chamber, and being responsible for will collection
Upper chamber is sent in the high-temperature flue gas introducing of flue, and upper chamber is pyrolysis chamber, accumulates high alumina ball particle, high-temperature flue gas and passes through heat herein
The VOCs exhaust gas mixing for the desorption that room bottom double-edged fine-toothed comb brick introduces is solved, the excessive oxygen in high-temperature flue gas is oxidized pyrolysis, tail
Gas flows into smoke evacuation header, and tail gas is after waste heat recycles to smoke stack emission；Similarly accordingly perpendicular road is also classified into two upper and lower chambers, and lower room is close
Room is sealed, effect is to prevent the VOCs exhaust gas of desorption from scurrying out from perpendicular road bottom, and upper chamber is desorption chamber, is connect with feeding system, is adsorbed
The continuous moving in perpendicular road, feeding system include storage tank, note wind header from top to bottom under gravity for agent, and note wind header will
The tail gas of the discharge of quirk introduces purging adsorbent, then mixes with the VOCs exhaust gas of desorption and be sent to by desorption chamber bottom double-edged fine-toothed comb brick
Pyrolysis chamber's oxidative pyrolysis.
Inventors have found that the active carbon ignition point for having adsorbed VOCs exhaust gas is lower, active carbon is easily oxidized (burning), is needed
It to realize that active carbon is desorbed by the way of indirect heating, in desorption pyrolysis oven, build block, high-temperature flue gas near quirk and perpendicular road
Quirk is flowed through, the active carbon heating to perpendicular road is realized, the VOCs exhaust gas after desorption is sent to heat by desorption chamber bottom double-edged fine-toothed comb brick
Solution room oxidative pyrolysis, and the tail gas of discharge of the air-flow from quirk purged, and the tail gas of the discharge of quirk is that oxygen amount is lower
Inert gas, to ensure that active carbon is not oxidized and keeps activity, the reuse of the tail gas of the discharge of quirk reduces pollutant
High-value-use is also achieved while discharge.
Compared with the existing technology, the present invention, which at least contains, has the advantage that first, and volatile organic compounds (VOCs) is general
Refer to fusing point lower than room temperature volatile organic compounds of the boiling point between 50~250 DEG C, that is to say, that adsorbent it is de-
Enclosure temperature should be greater than 250 DEG C, and adsorbent, which must carry out cooling down, after desorption reaches room temperature, so that the process of desorption and regeneration is completed, it will
Through VOCs exhaust gas environmental purification facility processing after discharge recycling tail gas as coolant, undoubtedly make tail gas acquisition high-value-use and compared with
For economy；Second, the active carbon ignition point for having adsorbed VOCs exhaust gas is lower, and active carbon is easily oxidized (burning), needs to use
The mode of indirect heating realizes that active carbon is desorbed, and in desorption pyrolysis oven, builds block near quirk and perpendicular road, high-temperature flue gas flows through fire
Road, realizes the active carbon heating to perpendicular road, and the VOCs exhaust gas after desorption is sent to pyrolysis chamber's oxygen by desorption chamber bottom double-edged fine-toothed comb brick
The tail gas for discharge of the air-flow from quirk changed and be pyrolyzed, and purge, and the tail gas of the discharge of quirk is the lower indifferent gas of oxygen amount
Body, to ensure that active carbon is not oxidized and keeps activity, the reuse of the tail gas of the discharge of quirk reduces pollutant emission
High-value-use is also achieved simultaneously.
Detailed description of the invention
Fig. 1 is the schematic view of the front view that pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant of the present invention.
Fig. 2 is the A-A section arragement construction signal that pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant of the present invention
Figure.
Fig. 3 is the B partial enlargement structural representation that pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant of the present invention.
Fig. 4 is the C partial enlargement structural representation that pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant of the present invention.
1- feeding system 2- storage tank 3- infuses wind header 4- smoke evacuation header
5- desorption pyrolysis furnace body 6-, which is erected, separates arch among road 7- quirk 8- double-edged fine-toothed comb brick 9-
10- collection flue 11- pyrolysis chamber 12- desorption chamber 13- regenerative chamber 14- seals room.
Specific embodiment
The present invention is described further with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant, it is characterized in that:
Step 1, the quirk 7 into desorption pyrolysis furnace body 5 fill high aluminium ball filler, and high aluminium ball filler particles 20~25mm of diameter passes through
Feeding system 1 conveys adsorbent to be desorbed, the cutting collection test desorption pyrolysis of flue 10 to desorption pyrolysis 5 road Zhong Shu 6 of furnace body
Then 5 working condition of furnace body introduces air-flow through note wind header 3 and purges from storage tank to perpendicular road 6, it is ensured that air-flow is not from perpendicular 6 bottom of road
Portion, which scurries out and passes through double-edged fine-toothed comb brick 8, flows into smoke evacuation header 4 through quirk 7.
Step 2, desorption, which is pyrolyzed near the quirk 7 and perpendicular road 6 of furnace body 5, builds block, and pyrolysis oven will be desorbed in centre partition arch 9
Body 5 is divided to for upper and lower twoth area, and pyrolysis zone is desorbed in the area Ji Shang, and quirk 7 is divided for two upper and lower chambers i.e. pyrolysis chamber 11, stored by the heat-accumulating area Xia Qu
Perpendicular road 6 is divided for two upper and lower chambers i.e. desorption chamber 12, seals room 14 by hot cell 13, and high-temperature flue gas enters heating from collection flue 10 and is desorbed
Pyrolysis furnace body 5 simultaneously keeps its temperature at 260~280 DEG C, adjusts the excess air coefficient of high-temperature flue gas, is not less than its oxygen content
14%。
Step 3, starting feeding system 1 are fed to perpendicular road 6, and adsorbent is under gravity from top to bottom in perpendicular road 6
The recycling tail gas of the discharge of quirk 7 is purged the adsorbent in perpendicular road 6 by continuous moving, note wind header 3, then useless with the VOCs of desorption
Gas mixing is sent to 11 oxidative pyrolysis of pyrolysis chamber by 12 bottom double-edged fine-toothed comb brick 8 of desorption chamber, and high-temperature flue gas is sent to pyrolysis through collecting flue 10
Room 11 is mixed with the VOCs exhaust gas of desorption, and the excessive oxygen in high-temperature flue gas is oxidized pyrolysis herein, and tail gas flows into row
Cigarette header 4, then to smoke stack emission after waste heat recycles.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (2)
1. pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant, it is characterized in that: step 1, into desorption pyrolysis furnace body
Quirk fills high aluminium ball filler, high aluminium ball filler particles 20~25mm of diameter, through feeding system into desorption pyrolysis furnace body
Perpendicular road conveys adsorbent to be desorbed, then cutting collection flue test desorption pyrolysis oven body running situation is introduced through note wind header
Air-flow is purged from storage tank to perpendicular road, it is ensured that air-flow, which does not scurry out from perpendicular road bottom and passes through double-edged fine-toothed comb brick and flow into through quirk, discharges fume
Header；Step 2, desorption, which is pyrolyzed near the quirk and perpendicular road of furnace body, builds block, and desorption pyrolysis furnace body is divided by centre partition arch
Pyrolysis zone is desorbed in the area Xia Liang, the area Ji Shang, and quirk is divided into two upper and lower chambers i.e. pyrolysis chamber, regenerative chamber by the heat-accumulating area Xia Qu, by perpendicular road point
For two upper and lower chambers, that is, desorption chamber, sealing room；Step 3, starting feeding system are fed to perpendicular road, and adsorbent is under gravity
The recycling tail gas of the discharge of quirk is purged the adsorbent in perpendicular road by the continuous moving in perpendicular road from top to bottom, note wind header, then
It is mixed with the VOCs exhaust gas of desorption and pyrolysis chamber's oxidative pyrolysis is sent to by desorption chamber bottom double-edged fine-toothed comb brick, high-temperature flue gas is sent through collecting flue
It is mixed toward pyrolysis chamber with the VOCs exhaust gas of desorption, the excessive oxygen in high-temperature flue gas is oxidized pyrolysis, tail gas stream herein
Enter header of discharging fume, then to smoke stack emission after waste heat recycles.
2. pyrolysis oven operation method is desorbed in a kind of VOCs waste-gas adsorbant according to claim 1, it is characterized in that: high temperature cigarette
Gas enters heating desorption pyrolysis furnace body from collection flue and keeps its temperature at 260~280 DEG C, adjusts the excess air of high-temperature flue gas
Coefficient makes its oxygen content not less than 14%.
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