CN109745824A - A kind of improvement VOCs waste gas circulation regeneration technology system - Google Patents
A kind of improvement VOCs waste gas circulation regeneration technology system Download PDFInfo
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Abstract
The present invention relates to environmental protection technical fields, and in particular to a kind of improvement VOCs waste gas circulation regeneration technology system.It is characterized in that: including desorption pyrolysis oven, chain conveyer grate, induced draught system, adsorbent moving bed；The desorption pyrolysis oven includes desorption pyrolysis furnace body, feeding system；Desorption pyrolysis Proper Design has quirk and perpendicular road, and quirk circulates for high-temperature flue gas, erects road and falls for adsorbent is mobile, builds block near quirk and perpendicular road；Feeding system includes storage tank, note wind header, and the tail gas of the discharge of quirk is introduced purging adsorbent by note wind header, then is mixed with the VOCs exhaust gas of desorption and be sent to pyrolysis chamber's oxidative pyrolysis by desorption chamber bottom double-edged fine-toothed comb brick；Chain conveyer grate includes dipleg, chain conveyer grate body；The design of chain conveyer grate body has kiln case, chain conveyer grate row, the design of kiln case has smoke outlet, chain conveyer grate row includes sprocket wheel, chain, grate row, air distribution plate, and induced draught system is responsible for introducing the tail gas of the exhaust tube of adsorbent moving bed into the air distribution plate for delivering into chain conveyer grate.
Description
Technical field
The present invention relates to environmental protection technical fields, and in particular to a kind of improvement VOCs waste gas circulation regeneration technology system.
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
Administered using absorption method, but after adsorbent absorption VOCs saturation, become solid waste pollutant, common practice by its
Regeneration.(number of patent application 201210077796.1, patent name are a kind of for Wind Volume VOCs exhaust gas to Chinese invention patent
The electrothermal purifying filter element of improvement) a kind of electrothermal purifying filter element for Wind Volume VOCs waste gas pollution control and treatment is disclosed, including enclose
Protection structure and its internal adsorption bed loaded, it is characterised in that: the electrothermal purifying filter element appearance is air intake surface, outlet air
The parallel box-type shaped polyhedron structure in face, air intake surface, outlet air surface are one or more layers porous sieve plate or sieve, and described goes along with sb. to guard him knot
Structure includes hermetic unit and above-mentioned air intake surface, outlet air surface；Adsorption bed is by active carbon eyelet fabric or porous activated carbon fiber cloth
It being formed by stacking by plane compression, adsorption bed any two opposing end surface or close position are equipped with electrode A and electrode B,
It can be passed through electric current to adsorption bed, be equipped with galvanic couple in adsorption bed, the temperature of adsorption bed is tested during electrothermal heating；Or
Person, the electrothermal purifying filter element appearance are cylindrical body, and building enclosure is made of inner cylinder, end cap and outer barrel, inner cylinder
It is respectively air intake surface and outlet air surface with outer barrel, inner cylinder is hollow porous cylinder closed at one end, is closely wound work thereon
Property charcoal eyelet fabric or porous activated carbon fiber cloth formed adsorption bed, outer barrel is by one or more layers netted or porous material system
At, using end cap as electrode or in adsorption bed upper and lower end face or close position, electrode A and electrode B are set, it can be to adsorbent bed
Layer is passed through electric current, and galvanic couple is arranged in adsorption bed, and the temperature of adsorption bed is tested during electrothermal heating；The active carbon
Eyelet fabric shape of a mesh is round, ellipse or polygon, and the internal diameter in two holes of longitudinal arbitrary neighborhood is greater than its hole wall, uses
Longitudinal direction is closely wound or plane compresses the mode being superimposed and forms adsorption bed；Or laterally above the internal diameter in two holes of arbitrary neighborhood is big
In its hole wall, adsorption bed is formed in such a way that transverse direction is closely wound or plane compresses superposition；The porous active Carbon fiber
Wei Bu, the shape in hole are round, ellipse or polygon, and the internal diameter in two holes of longitudinal arbitrary neighborhood is greater than its pitch of holes, adopts
It is closely wound with longitudinal direction or plane compresses the mode being superimposed and forms adsorption bed；Or the internal diameter in two holes of lateral upper arbitrary neighborhood
Greater than its pitch of holes, adsorption bed is formed in such a way that transverse direction is closely wound or plane compresses superposition；Alternatively, described is porous
Active carbon fiber fabrics, the shape in hole are one of strip, X-shaped, cross, crescent, arc, L shape or a variety of, along longitudinal direction
Circulation of embarking on journey occurs, and projection of the immediate hole in position in both direction in length and breadth has weight in any one hole row adjacent thereto
Close, using it is vertical or horizontal be closely wound or plane compress superposition by the way of form adsorption bed；Or only projection horizontally
There is coincidence, and the projected length of hole horizontally is greater than the projector distance between laterally adjacent two hole in the longitudinal direction, or only in longitudinal direction
On projection have a coincidence, and the projected length of hole in the longitudinal direction is greater than the projector distance between longitudinally adjacent two hole horizontally, adopts
It is alternately closely wound with vertical and horizontal or plane compresses the mode being superimposed and forms adsorption bed.Chinese invention patent (patent Shen
Please number be 201510779318.9, patent name is a kind of combined type VOCs Adsorption Concentration runner and its application method) it discloses
A kind of combined type VOCs Adsorption Concentration runner and its application method, it is characterised in that: it is by molecular sieve runner and honeycomb activity
Charcoal runner is coaxial, with made of diameter docking, and the cellular activated carbon runner is located at VOCs inlet side, is laid on each runner
Adsorption zone, desorption area and cooling zone, are provided with isolation ring at the docking of two runners, and the isolation ring is used for two runners
Adsorption zone, desorption area and cooling zone separate, and again cloth wind, reduce windage；The molecular sieve runner is by spraying, eluting
Or VOCs adsorbent is attached to and to obtain on cellular web by the mode of dipping.
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 improvement VOCs waste gas circulation regeneration technology system, it is special
Sign is: including pyrolysis oven, chain conveyer grate, induced draught system, adsorbent moving bed is desorbed.
The desorption pyrolysis oven includes desorption pyrolysis furnace body, feeding system.
The desorption pyrolysis Proper Design has quirk and perpendicular road, and quirk circulates for high-temperature flue gas, and it is mobile for adsorbent to erect road
It falls, builds block near quirk and perpendicular road.Desorption pyrolysis furnace body is divided into twoth area up and down, the desorption pyrolysis of the area Ji Shang by centre partition arch
Area, the heat-accumulating area Xia Qu.
Corresponding quirk is also classified into two upper and lower chambers, and lower room is regenerative chamber, is responsible for for the high-temperature flue gas introducing for collecting flue being sent to
Room, upper chamber are pyrolysis chamber, accumulate high alumina ball particle, herein high-temperature flue gas and the desorption introduced by pyrolysis chamber bottom double-edged fine-toothed comb brick
The mixing of VOCs exhaust gas, the excessive oxygen in high-temperature flue gas is oxidized pyrolysis, and tail gas flows into header of discharging fume, and tail gas is through waste heat
To smoke stack emission after recycling；Similarly accordingly perpendicular road is also classified into two upper and lower chambers, and lower room is sealing room, and effect is the VOCs for preventing desorption
Exhaust gas is scurried out from perpendicular road bottom, and upper chamber is desorption chamber, is connect with feeding system, and adsorbent exists from top to bottom under gravity
Continuous moving in perpendicular road.
The feeding system includes storage tank, note wind header, and the tail gas of the discharge of quirk is introduced purging absorption by note wind header
Agent, then 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.
The chain conveyer grate includes dipleg, chain conveyer grate body.
Continuous moving uniformly paves through dipleg onto chain conveyer grate row adsorbent after desorption under gravity, together
When adsorbent as the filler in dipleg play a part of sealing, prevent desorption after VOCs exhaust emission scurry out from dipleg.
The chain conveyer grate body design has kiln case, chain conveyer grate row, and the kiln case design has smoke outlet, and the chain passes
Dynamic grate row includes sprocket wheel, chain, grate row, air distribution plate, and the grate row includes lateral pin, grate screening, and grate screening is piecewise
Bunchiness is arranged across lateral pin, front and back grate screening is staggeredly correspondingly connected with to form grate row by lateral pin, and the both ends of the lateral pin are solid
Knot is on chain, and the rotation of sprocket wheel drive chain is to drive grate row's movement.
The air distribution plate will be introduced through adsorbent moving bed treated emission, and the gap through adjacent grate screening is sent
Enter in kiln case, purging is cooling to pave to the adsorbent on chain conveyer grate row, then discharges through smoke outlet.
The induced draught system is responsible for the tail gas introducing of the exhaust tube of adsorbent moving bed delivering into chain conveyer grate
Air distribution plate.
The adsorbent moving bed includes driving device, unloads charging tray, support arcs, adsorbent mobile bed body, central tube, cloth
Device, exhaust tube, dipleg, cone bucket devise central tube in the adsorbent moving bed body, and central tube peripheral wall is uniformly distributed inclination
Downward ventilation hole, top design are cone, and bottom design has grey leakage port, and central tube is located in adsorbent by support arcs and moves
The center of dynamic bed body, interior support arcs are hollow structure, can introduce VOCs exhaust gas in central tube.
The mobile bed body top design of the adsorbent has distributing device, and adsorbent uniformly sends out through distributing device and is transported to central tube
In the annular space in adsorbent moving bed body between wall, charging tray is unloaded in the mobile bed body bottom design of adsorbent, fills in driving
It is rotated under the driving set, adsorbent collects in cone bucket in gravity and mobile fall with the help of unloading charging tray, to prevent VOCs useless
Gas is scurried out through cone bucket, is devised longer dipleg, is hindered while adsorbent is discharged from dipleg as packing seal
VOCs exhaust gas is scurried out to the mobile bed body bottom of adsorbent, to guide VOCs exhaust gas upwards after adsorbent bed purification from exhaust
Cylinder discharge.
Inventors have found that solve continuing purge VOCs exhaust gas technical problem under the conditions of continuous production, need adsorbent
Filler constantly keeps phase border to contact with VOCs exhaust gas, and disengages in time before saturation, can be mobile using stratum granulosum
Continuous moving, VOCs exhaust gas are constant under from top to bottom under gravity for bed filter working principle, i.e. adsorbent
And upper conveying is contacted with adsorbent holding phase border and mass-transfer efficiency, the mobile bed body of adsorbent is that static equipment can solve to seal very well
Problem, adsorbent and VOCs exhaust gas persistently keep the contact of phase border to solve the existing practical problem of continuous production.Due to adsorbent bed
Layer design has certain height, how in adsorbent bed even distributing wind and to guarantee wind-distributing pipe road not because VOCs exhaust gas is self-contained
Particulate matter sedimentation dust stratification cause line clogging to be to need the another actual techniques problem that solves, therefore in the mobile bed body of adsorbent
Central tube is inside devised, central tube peripheral wall is uniformly distributed ventilation hole diagonally downward, and top design is cone, and bottom design has
Grey leakage port.Central tube is located in the center of the mobile bed body of adsorbent by support arcs, is hollow structure in support arcs, can be by VOCs
Exhaust gas introduces in central tube.The mobile lower backwardness of adsorbent collects in cone bucket, to prevent exhaust gas from scurrying out through cone bucket, devises longer
Dipleg, adsorbent from dipleg be discharged while as packing seal hinder VOCs exhaust gas to adsorbent move bed body bottom
Portion scurries out, so that VOCs exhaust gas be guided to discharge after adsorbent bed purification from exhaust tube upwards.
Inventors have found that VOCs exhaust gas, after adsorbent bed purification, VOCs exhaust gas is increased by adsorbent bed pressure drop
Add, and various concentration VOCs exhaust gas and the wired sexual intercourse of adsorbent bed pressure drop, in other words VOCs waste air ventilation flow is kept
In the case where constant, VOCs exhaust gas concentration and adsorbent bed pressure drop can form working curve, can be by adjusting absorption
The inlet amount of agent realizes the efficient target using with continuing purge VOCs exhaust gas of adsorbent.
Inventors have found that the VOCs extensively from the discharge of the chemical industry such as paint, coating, coating, lubricating oil, rubber is useless
The main feature of gas is exactly that low concentration, Wind Volume are disappeared if carrying out purified treatment by this reliable method of oxidizing fire
The thermal energy of consumption is higher, does not meet energy conservation and economic principle.And be desorbed after adsorbent is adsorbed to saturation, it on the one hand realizes and inhales
Attached dose of regeneration avoids the generation of solid waste, and on the other hand it is higher to generate VOCs exhaust gas concentration for desorption, it can be understood as
Former low concentration VOCs exhaust gas realizes the process of concentration, has the condition of oxidizing fire purified treatment.
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 be after the processing of adsorbent moving bed
Emission reuse purges active carbon with tail gas and cools 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, emission will be returned after the processing of adsorbent moving bed
It is used 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.
Inventors have found that the adsorbent after heated desorption, which must carry out cooling, reaches room temperature, heat of adsorption is discharged, it can be complete
At the process of desorption and regeneration, cooling air-flow is at the emission after the processing of adsorbent moving bed, selected adsorbent moving bed
The main reason of emission reuse after reason has: first, the tail gas through adsorbent moving bed processing after to environmental emission, it is therein
VOCs pollutant has been adsorbed purification, is excellent inert gas for the adsorbent after desorption, the activation to adsorbent
Regeneration does not influence, and ensure that adsorption efficiency；Second, the temperature of tail gas is suitable with environment temperature, it is excellent coolant.It is above-mentioned
Two features enable tail gas directly to contact abundant mass-and heat-transfer with the adsorbent after heating desorption.
Inventors have found that being needed higher strong since adsorbent needs to bear the variation of air-flow washed away with temperature, pressure
Degree and wearability, the device for designing cooling activation should avoid the mutual collision friction of absorbent particles from reaching as far as possible prevents it broken
Purpose, chain conveyer grate should be able to solve one of scheme of prior art problem.The design of chain conveyer grate has dipleg, chain to pass
Dynamic grate body.Continuous moving uniformly paves through dipleg onto chain conveyer grate row adsorbent after desorption under gravity,
Adsorbent plays sealing as the filler in dipleg simultaneously, and the VOCs exhaust emission after preventing desorption is scurried out from dipleg.
The design of chain conveyer grate body has kiln case, chain conveyer grate row, and the kiln case design has smoke outlet, and chain conveyer grate row includes chain
Wheel, chain, grate row, air distribution plate, grate row include lateral pin, grate screening, and grate screening passes through lateral pin arrangement bunchiness piecewise, preceding
Grate screening is staggeredly correspondingly connected with to form grate row by lateral pin afterwards, and the both ends of lateral pin are fixedly arranged on chain, sprocket wheel drive chain
Rotation is to drive grate row's movement.Air distribution plate will be introduced through adsorbent moving bed treated emission, through adjacent grate
The gap of screening is sent into kiln case, and purging is cooling to pave to the adsorbent on chain conveyer grate row, then discharges through smoke outlet.
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
Discharge recycling tail gas undoubtedly makes tail gas acquisition high-value-use and relatively inexpensive as coolant after the processing of adsorbent moving bed；
Second, the active carbon ignition point for having adsorbed VOCs exhaust gas is lower, and active carbon is easily oxidized (burning), needs using indirect heating
Mode realize active carbon be desorbed, desorption pyrolysis oven in, blocks is built near quirk and perpendicular road, high-temperature flue gas flows through quirk, realization
The active carbon in the road Liao Duishu heats, and the VOCs exhaust gas after desorption is sent to pyrolysis chamber's oxidative pyrolysis by desorption chamber bottom double-edged fine-toothed comb brick,
And the tail gas of discharge of the air-flow from quirk purged, and the tail gas of the discharge of quirk is the lower inert gas of oxygen amount, thus
It ensure that active carbon is not oxidized and keeps activity, the reuse of the tail gas of the discharge of quirk reduces also real while pollutant emission
High-value-use is showed；Third, the adsorbent after heated desorption must carry out it is cooling reach room temperature, discharge heat of adsorption, can be complete
At the process of desorption and regeneration, cooling air-flow is at the emission after the processing of adsorbent moving bed, selected adsorbent moving bed
The main reason of emission reuse after reason has: first, the tail gas through adsorbent moving bed processing after to environmental emission, it is therein
VOCs pollutant has been adsorbed purification, is excellent inert gas for the adsorbent after desorption, the activation to adsorbent
Regeneration does not influence, and ensure that adsorption efficiency；Second, the temperature of tail gas is suitable with environment temperature, it is excellent coolant.It is above-mentioned
Two features enable tail gas directly to contact abundant mass-and heat-transfer with the adsorbent after heating desorption；4th, using stratum granulosum
Continuous moving, VOCs exhaust gas are constant from top to bottom under gravity for moving bed filter working principle, i.e. adsorbent
Conveying from bottom to top is contacted with adsorbent holding phase border and mass-transfer efficiency, and the mobile bed body of adsorbent is that static equipment can solve very well
Sealing problem, adsorbent and VOCs exhaust gas persistently keep the contact of phase border to solve the existing practical problem of continuous production.
Detailed description of the invention
Fig. 1 is a kind of schematic view of the front view for administering VOCs waste gas circulation regeneration technology system of the present invention.
Fig. 2 is a kind of A-A section arragement construction schematic diagram for administering VOCs waste gas circulation regeneration technology system of the present invention.
Fig. 3 is a kind of B partial enlargement structural representation for administering VOCs waste gas circulation regeneration technology system of the present invention.
Fig. 4 is a kind of C partial enlargement structural representation for administering VOCs waste gas circulation regeneration technology system of the present invention.
Fig. 5 is a kind of D partial enlargement structural representation for administering VOCs waste gas circulation regeneration technology system of the present invention.
Fig. 6 is a kind of E-E section arragement construction schematic diagram for administering VOCs waste gas circulation regeneration technology system of the present invention.
Fig. 7 is a kind of F partial enlargement structural representation for administering VOCs waste gas circulation regeneration technology system of the present invention.
I-desorption II-chain conveyer of pyrolysis oven grate, III-induced draught system, IV-adsorbent moving bed
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
15- dipleg 16- chain conveyer grate body 17- smoke outlet 18- kiln case 19- chain
20- air distribution plate 21- sprocket wheel 22- chain conveyer grate arranges 23- grate screening 24- lateral pin
25- grate row 26- driving device 27- unloads charging tray 28- support arcs
29- adsorbent moves bed body 30- central tube 31- ventilation hole 32- distributing device
33- exhaust tube 34- dipleg 35- cone bucket 36- grey leakage port.
Specific embodiment
The present invention is described further with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of improvement VOCs waste gas circulation regeneration technology system,
It is characterized in: including pyrolysis oven I, chain conveyer grate II, induced draught system III, adsorbent moving bed IV is desorbed.
The desorption pyrolysis oven I includes desorption pyrolysis furnace body 5, feeding system 1.
The desorption pyrolysis design of furnace body 5 has quirk 7 and perpendicular road 6, and quirk 7 circulates for high-temperature flue gas, erects road 6 for adsorbent
It is mobile to fall, block is built near quirk 7 and perpendicular road 6.Desorption pyrolysis furnace body 5 is divided to for upper and lower twoth area, the area Ji Shang by centre partition arch 9
Pyrolysis zone, the heat-accumulating area Xia Qu is desorbed.
Corresponding quirk 7 is also classified into two upper and lower chambers, and lower room is regenerative chamber 13, is responsible for sending the high-temperature flue gas introducing for collecting flue 10
Toward upper chamber, upper chamber is pyrolysis chamber 11, accumulates high alumina ball particle, herein high-temperature flue gas with pass through 11 bottom double-edged fine-toothed comb brick 8 of pyrolysis chamber
The VOCs exhaust gas of the desorption of introducing mixes, and the excessive oxygen in high-temperature flue gas is oxidized pyrolysis, and tail gas flows into smoke evacuation header
4, tail gas is after waste heat recycles to smoke stack emission；Similarly accordingly perpendicular road 6 is also classified into two upper and lower chambers, and lower room is sealing room 14, effect
It is to prevent the VOCs exhaust gas of desorption from scurrying out from perpendicular 6 bottom of road, upper chamber is desorption chamber 12, is connect with feeding system 1, and adsorbent is in weight
The continuous moving in perpendicular road 6 from top to bottom under the action of power.
The feeding system 1 includes storage tank 2, note wind header 3, and the tail gas of the discharge of quirk 7 is introduced purging by note wind header 3
Adsorbent, then mixed with the VOCs exhaust gas of desorption and 11 oxidative pyrolysis of pyrolysis chamber is sent to by 12 bottom double-edged fine-toothed comb brick 8 of desorption chamber.
The chain conveyer grate II includes dipleg 15, chain conveyer grate body 16.
Continuous moving uniformly paves through dipleg 15 to chain conveyer grate row 22 adsorbent after desorption under gravity
On, while adsorbent plays sealing as the filler in dipleg 15, prevents the VOCs exhaust emission after being desorbed from dipleg
15 scurry out.
The design of chain conveyer grate body 16 has kiln case 18, chain conveyer grate row 22, and the design of kiln case 18 has smoke outlet
17, the chain conveyer grate row 22 includes sprocket wheel 21, chain 19, grate row 25, air distribution plate 20, and the grate row 25 includes lateral pin
24, grate screening 23, grate screening 23 piecewise pass through lateral pin 24 arrange bunchiness, front and back grate screening 23 by lateral pin 24 staggeredly pair
It should connect to form grate row 25, the both ends of the lateral pin 24 are fixedly arranged on chain 19, and the rotation of 21 drive chain 19 of sprocket wheel is to band
Dynamic grate row 25 is mobile.
The air distribution plate 20 will be introduced through adsorbent moving bed treated emission, through between adjacent grate screening 23
Gap is sent into kiln case 18, and purging is cooling to pave to the adsorbent on chain conveyer grate row 22, then discharges through smoke outlet 17.
The induced draught system III is responsible for the tail gas introducing of the exhaust tube 33 of adsorbent moving bed IV delivering into chain conveyer
The air distribution plate 20 of grate II.
The adsorbent moving bed IV include driving device 26, unload the mobile bed body 29 of charging tray 27, support arcs 28, adsorbent,
Central tube 30, distributing device 32, exhaust tube 33, dipleg 34, cone bucket 35, the adsorbent move in bed body 29 and devise central tube
30,30 peripheral wall of central tube is uniformly distributed ventilation hole 31 diagonally downward, and top design is cone, and bottom design has grey leakage port
36, central tube 30 is located in the center of the mobile bed body 29 of adsorbent by support arcs 28, is hollow structure in support arcs 28, can will
VOCs exhaust gas introduces in central tube 30.
Mobile 29 top design of bed body of the adsorbent has distributing device 32, and adsorbent is uniformly sent out through distributing device 32 and is transported to
In annular space between central tube 30 and mobile 29 inner wall of bed body of adsorbent, mobile 29 bottom of the bed body design of adsorbent has discharging
Disk 27 rotates under the driving of driving device 26, and adsorbent collects cone in gravity and mobile fall with the help of unloading charging tray 27
In bucket 35, to prevent VOCs exhaust gas from scurrying out through cone bucket 35, longer dipleg 34 is devised, adsorbent is discharged from dipleg 34
It hinders VOCs exhaust gas as packing seal simultaneously to scurry out to mobile 29 bottom of bed body of adsorbent, to guide VOCs exhaust gas upward
It is discharged after adsorbent bed purification from exhaust tube 33.
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 (5)
1. a kind of improvement VOCs waste gas circulation regeneration technology system, it is characterized in that: including desorption pyrolysis oven, chain conveyer grate, drawing
Wind system, adsorbent moving bed；The desorption pyrolysis oven includes desorption pyrolysis furnace body, feeding system；Desorption pyrolysis Proper Design
There are quirk and perpendicular road, quirk circulates for high-temperature flue gas, erects road and falls for adsorbent is mobile, builds block near quirk and perpendicular road；It is intermediate
Desorption pyrolysis furnace body is divided into twoth area up and down by partition arch, and pyrolysis zone, the heat-accumulating area Xia Qu is desorbed in the area Ji Shang；Feeding system includes storage
Tank, note wind header, the tail gas of the discharge of quirk is introduced purging adsorbent by note wind header, then is mixed and led to the VOCs exhaust gas of desorption
It crosses desorption chamber bottom double-edged fine-toothed comb brick and is sent to pyrolysis chamber's oxidative pyrolysis；Chain conveyer grate includes dipleg, chain conveyer grate body；Chain conveyer is combed
Bed body design has kiln case, chain conveyer grate row, and the design of kiln case has smoke outlet, and chain conveyer grate row includes sprocket wheel, chain, grate
Row, air distribution plate, grate row include lateral pin, grate screening, and grate screening passes through lateral pin arrangement bunchiness piecewise, and front and back grate screening is logical
It crosses lateral pin to be staggeredly correspondingly connected with to form grate row, the both ends of lateral pin are fixedly arranged on chain, and the rotation of sprocket wheel drive chain is to drive
Grate row's movement；Air distribution plate will be introduced through adsorbent moving bed treated emission, and the gap through adjacent grate screening is sent
Enter in kiln case, purging is cooling to pave to the adsorbent on chain conveyer grate row, then discharges through smoke outlet；The induced draught system is responsible for
The tail gas of the exhaust tube of adsorbent moving bed is introduced to the air distribution plate for delivering into chain conveyer grate；The adsorbent moving bed packet
It includes driving device, unload charging tray, support arcs, adsorbent mobile bed body, central tube, distributing device, exhaust tube, dipleg, cone bucket, absorption
Central tube is devised in agent moving bed body；The mobile bed body top design of adsorbent has distributing device, and adsorbent is uniformly broadcast through distributing device
It dissipates and is transported in the annular space in central tube and adsorbent moving bed body between wall, the mobile bed body bottom design of adsorbent is unloaded
Charging tray rotates under the drive of the drive, and adsorbent collects in cone bucket in gravity and mobile fall with the help of unloading charging tray,
To prevent VOCs exhaust gas from scurrying out through cone bucket, longer dipleg is devised, as filler while adsorbent is discharged from dipleg
Sealing hinders VOCs exhaust gas and scurries out to the mobile bed body bottom of adsorbent, to guide VOCs exhaust gas upwards through adsorbent bed net
It is discharged after change from exhaust tube.
2. a kind of improvement VOCs waste gas circulation regeneration technology system according to claim 1, it is characterized in that: the quirk
It is divided into two upper and lower chambers, lower room is regenerative chamber, is responsible for the high-temperature flue gas introducing for collecting flue being sent to upper chamber, upper chamber is pyrolysis chamber, heap
Product high alumina ball particle, high-temperature flue gas is mixed with the VOCs exhaust gas of the desorption introduced by pyrolysis chamber bottom double-edged fine-toothed comb brick herein, high
Excessive oxygen in warm flue gas is oxidized pyrolysis, and tail gas flows into smoke evacuation header, and tail gas is after waste heat recycles to smoke stack emission.
3. a kind of improvement VOCs waste gas circulation regeneration technology system according to claim 1, it is characterized in that: similarly corresponding perpendicular
Road is also classified into two upper and lower chambers, and lower room is sealing room, and effect is to prevent the VOCs exhaust gas of desorption from scurrying out from perpendicular road bottom, and upper chamber is de-
Alcove is connect with feeding system, and adsorbent is erecting continuous moving in road from top to bottom under gravity.
4. a kind of improvement VOCs waste gas circulation regeneration technology system according to claim 1, it is characterized in that: the suction after desorption
Attached dose under gravity continuous moving uniformly paved through dipleg onto chain conveyer grate row, while adsorbent is as in dipleg
Filler play a part of sealing, prevent desorption after VOCs exhaust emission scurry out from dipleg.
5. a kind of improvement VOCs waste gas circulation regeneration technology system according to claim 1, it is characterized in that: central tube peripheral wall
It is uniformly distributed ventilation hole diagonally downward, top design is cone, and bottom design has grey leakage port, and central tube is fixed by support arcs
Position is hollow structure in the center of the mobile bed body of adsorbent, support arcs, can introduce VOCs exhaust gas in central tube.
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| CN111249857A (en) * | 2019-07-04 | 2020-06-09 | 广东澄宇实业有限公司 | VOC exhaust-gas treatment purifier and have its baking finish room |
| CN112604644A (en) * | 2020-12-14 | 2021-04-06 | 江苏磊金环境工程有限公司 | Thermal desorption regeneration tower equipment for saturated active alumina pellets |
| CN113069887A (en) * | 2021-04-29 | 2021-07-06 | 孙绍堂 | Multilayer mesh removes bed exhaust gas purification system |
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