CN109482038A - A kind of VOC controller, processing system and operation method - Google Patents
A kind of VOC controller, processing system and operation method Download PDFInfo
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- CN109482038A CN109482038A CN201710812064.5A CN201710812064A CN109482038A CN 109482038 A CN109482038 A CN 109482038A CN 201710812064 A CN201710812064 A CN 201710812064A CN 109482038 A CN109482038 A CN 109482038A
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- 238000012545 processing Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000003795 desorption Methods 0.000 claims abstract description 101
- 238000010521 absorption reaction Methods 0.000 claims abstract description 79
- 239000004615 ingredient Substances 0.000 claims abstract description 25
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 14
- 230000036760 body temperature Effects 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 129
- 238000010438 heat treatment Methods 0.000 claims description 39
- 230000008569 process Effects 0.000 claims description 16
- 239000000112 cooling gas Substances 0.000 claims description 14
- 230000007306 turnover Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000012855 volatile organic compound Substances 0.000 description 78
- 238000001179 sorption measurement Methods 0.000 description 22
- 230000008929 regeneration Effects 0.000 description 15
- 238000011069 regeneration method Methods 0.000 description 15
- 238000001816 cooling Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000003463 adsorbent Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000002156 adsorbate Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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Classifications
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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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- 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
- B01D2259/40003—Methods relating to valve switching
-
- 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
-
- 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
Abstract
The present invention provides a kind of operation method of VOC processing system, the processing system includes: absorption idler wheel, heater, drive blower, the gas pipeline for the different zones being connected on absorption idler wheel with more, positioned at heater upstream or an at least valve for gas downstream pipeline, the operation method of the VOC processing system includes: the initial shift and the second working stage of alternate cycles, gas to be processed is passed through to the binding domain of the absorption idler wheel in initial shift, it turns off or reducing the valve flows through no or only a small amount of air-flow in heater, the power for inputting heater is the first power, so that heater body temperature is higher than standby temperature lower than desorption temperature；Gas to be processed is continually fed into the binding domain of the absorption idler wheel in second working stage, the valve is opened to make air-flow flow into the heater and flow into the desorption region on absorption idler wheel, the power for inputting heater is the second power, enables the air-flow of output heater that the VOC ingredient adsorbed in desorption region is desorbed；Wherein second power is greater than the first power, and the time span of initial shift is greater than the time span of the second working stage.
Description
Technical field
The present invention relates to gas cleaning equipment and methods more particularly to a kind of in process to volatile organic gases
Clean technology is carried out, it can be while keeping high-efficient purification gas, substantially energy saving.
Background technique
In coating factory, semiconductor factory or printery etc., using a large amount of organic solvent, organic solvent is easy to wave
Gaseous volatile organic compounds (Volatile Organic Compounds abbreviation VOC) is issued into air.Many institute's weeks
Know, be discharged to the VOC in atmosphere from factory, is reacted with sunlight, ozone etc., form harmful Organic particulate, and make
Ozone concentration increase in atmosphere etc., very bad influence is generated to atmospheric environment, meanwhile, it also can be to contact VOC in factory
The health of human body of staff has an adverse effect.Therefore, the VOC generated in industrial production can will be just discharged into after treatment
It is recycled in atmosphere or in the workshop of entrance factory.
Absorption method is widely used in the prior art to handle containing VOC gas, it, can using the porous property of adsorbent
By industry be vented in volatile organic gases, stink or poisonous gas generate the absorption of physics, and it is adsorbed in adsorbent
In hole, with the purpose being vented up to purification industry.However adsorbent is after adsorption saturation, it is necessary to, will via regenerated program
It is filled in adsorbent and is adsorbed matter (such as volatile organic molecule, higher boiling chemical substance ... etc.) removal, just repeat
It uses.Wherein absorption roller type adsorption system is regenerative operation system on a kind of continous way line succeeded in developing in recent years.Such as figure
It is the VOC gas processing system of the prior art shown in 1a, adsorbs idler wheel including one and multiple steam lines being mutually isolated are real
The concentration and processing of the adsorption cleaning and VOC ingredient of existing exhaust gas.Wherein VOC gas processing system includes a processing gas air inlet pipe
Binding domain 20 in road F0 way roller is passed through the gas to be processed containing VOC ingredient, passes through at after passing through absorption idler wheel
Process gases exhaust pipe F1 is transported to the space for needing purification gas.Wherein one is also in series on processing gas admission line F0
A driving blower 10, for driving bulk gas to flow into absorption idler wheel.Cooling gas admission line F2a is from processing gas air inlet pipe
The cooled region 24 that portion gas passes through absorption idler wheel is shunted on road F0, and flows into heating by cooling gas outlet pipe F2b
Device is heated, so that cooling gas is heated to idler wheel is desorbed enough such as 200 degree or more of temperature, forms desorption gas
Body.Desorption gas by desorption inlet pipe road F3b flow into absorption idler wheel desorption region 22 so that the VOC adsorbed on idler wheel at
Divide desorption, becomes the exhaust gas of the VOC containing high concentration, these exhaust gas are by desorption exhaust pipe road F3a and are connected on desorption exhaust pipe road
On driving blower 30 be admitted to next step processing equipment.Fig. 1 b is the side view that idler wheel is adsorbed in Fig. 1 a, is adsorbed as shown in the figure
Idler wheel is cylinder, and idler wheel is divided into three regions by multiple gas pipelines being mutually isolated, and wherein area is maximum and handles
Gas pipeline connection is binding domain 20, is cooled region 24 with cooling air pipe connection, is joined with desorption gas pipeline
Logical is desorption region 22.It is rotated by driving absorption idler wheel with certain speed, contains volatile organic component or toxicity chemical combination
The industry exhaust gas of object through adsorb idler wheel binding domain when, adsorb idler wheel on the adsorbent property of will volatilize organic substance or toxic substance
Matter absorption, and reach the purpose of waste gas purification.When absorption idler wheel is transferred to desorption and regeneration region (can also claim desorption region), heating
Device heats one regeneration air stream and is transported to desorption and regeneration region, for that will adsorb the volatile organic matter of roller surface
Matter is desorbed out, regenerates binding domain to continue to use, and the concentration that the thickened waste conductance for being desorbed out enters next link is burnt
Change device and carry out combustion decomposition, or imports a condenser and carry out condensing recovery.In order to which be heated to regeneration air stream being capable of desorption
The temperature of volatile organic matter, heating device will usually provide larger heating power (such as tens kilowatts), and due to factory
Volatile organic matter whole day is all generating, and therefore, the heating device of continuous heating can consume a large amount of electric energy, increases factory
Cost.
So the operational effect of VOC gas processing system can be guaranteed in the prior art, the problem of most serious is energy
It consumes excessively high, how with less energy consumption to realize that the absorption of VOC ingredient and desorption in air be core skill urgently to be solved in the industry
Art problem.
Summary of the invention
Since the prior art is there is the above problem, the present invention proposes to use regeneration on demand and can be with the VOC of intermittent-heating
Purification device can effectively solve the serious problems of a large amount of high energy consumption existing in the prior art.
The present invention solves the above problems by the following technical programs: the power-saving technology be put forward for the first time in continuous operation and
Recuperation of heat is strict except the method and device for using the mode of discontinuous operation with this mode of realization in VOC equipment.Realization is pressed
It need to regenerate and energy conservation is by regenerating the effective of blower wind speed and regenerative heater temperature and timely control.It is not all existing
There is the function all having except VOC equipment in starting device and operation.The key of the on-demand regeneration techniques is by having
The VOC detector of line monitoring, the operational efficiency and energy consumption of continuous monitoring device.The device controller is wanted efficiently to handle
The parameter that VOC detector and a variety of detectors are collected adjusts and controls in time the starting of regenerating unit, working time and regeneration
Frequency, etc. so that entirely except VOC device height is intelligent.The heater air inlet and air outlet various valves (V3,
V4, F41), and the by-pass tee valve V3 that may be used when initial shift and the second working stage are converted, it can all rise
The regeneration air quantity for passing through heater in different phase to control reaches heating regeneration air quantity on demand and control heater non-renewable
The heat energy loss in stage.The temperature of the heater is not all existing except VOC equipment is constant always after starting device, and
Being can be in a complete regeneration period, that is, including heating up, has in a cycle of constant temperature and cooling by the value of setting
The variation of rule reaches most effective regeneration and most effective energy conservation.The air quantity of the regeneration blower is not all existing to be removed
VOC equipment is constant always after starting device, but can in a complete regeneration period, that is, including heating, constant temperature
The regular variation of value with setting is pressed in a cycle of cooling, reaches most effective regeneration and most effective energy conservation.
It should be understood that these summary of the invention are only illustrative of the invention and is not intended to limit the scope of the invention.Furthermore it should manage
Solution, after reading the content taught by the present invention, those skilled in the art can make various modifications or changes to the present invention, this
A little equivalent forms are also fallen within the scope of the appended claims of the present application.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 a is the structural schematic diagram of prior art VOC processing system；
Fig. 1 b is to adsorb region division schematic diagram in idler wheel side view in the prior art；
Fig. 2 shows first embodiment of the invention VOC processing system structural schematic diagrams；
Fig. 3 is warm in flow, heating power and heater in each pipeline in first embodiment of the invention
Degree variation schematic diagram；
Fig. 4 shows the VOC processing system structural schematic diagram of second embodiment of the invention.
Specific embodiment
Below in conjunction with specific embodiments and drawings, apparatus of the present invention and method are illustrated.It is emphasized that here only
It is the elaboration of exemplary type, however not excluded that have other utilization embodiments of the present invention.
Inventor has found that needing lasting utilization heater heating air in the prior art so that desorption area
VOC ingredient desorption on domain 22 is to adsorb the VOC ingredient adsorbed on idler wheel in order to prevent and excessively accumulate to reach saturation, causes to inhale
Attached rate declines, that is, the VOC ingredient in the gas to be processed of part flows through the adsorption zone 20 of absorption idler wheel, is not inhaled effectively
It is attached, but the space for needing pure air has been flowed to by processing gas exhaust pipe F1.By inventor the study found that reality
On under absorption and the very high situation of storage capacity very low in gas concentration to be processed and adsorbing idler wheel, the timing of desorption region 22 1
Between without desorption adsorption rate will not be caused to reduce.Since VOC concentration can change in gas to be processed, though absorption idler wheel is thicker
The storage capacity of absorption idler wheel can be so improved, but also brings along gas-flow resistance and becomes larger, needs higher volume of VOC processing system
And more powerful driving blower 10, and idler wheel it is thicker in desorption process be desorbed region high temperature gas inflow end and
The temperature difference between outflow end can be bigger, this absorption idler wheel that will lead to close desorption inlet pipe road F3b flows into the temperature at end quickly
Reach 200 degree of target temperature, but be proximate to desorption exhaust pipe road F3a adsorb idler wheel outflow end temperature also at 150 degree hereinafter,
It can not be desorbed completely, the thickness for adsorbing idler wheel for these reasons namely adsorbs the absorption of idler wheel and storage capacity is limited.It is existing
Having the rotation speed that idler wheel is adsorbed in technology is about 5 turns/hour, that is, every 12 minutes once take off entire absorption idler wheel
Attached, this desorption cycles is to calculate the parameter obtained according to theoretical maximum VOC concentration and minimum idler wheel adsorption capacity, can be guaranteed
Adsorption rate will not occur in normal parameters reduces problem.But in actual use, wait locate in most applications
The VOC concentration that process gases includes is far below theoretical maximum, and absorption idler wheel also can choose with larger thickness, so existing
Continuous heating, which obtains high-temperature gas, in technology will cause very big energy waste for being desorbed.
Based on above-mentioned discovery, inventor proposes the VOC processing system for being able to carry out intermittent desorption and corresponding VOC
Processing system operation method.Fig. 2 show as VOC processing system of the invention, and VOC processing system of the present invention includes cooling gas
Outlet pipe F2b and VOC concentration inductor 41 and 43.Wherein cooling gas outlet pipe F2b include two lateral F41 and
F42, lateral F41 are connected to a three-way valve V3 on desorption inlet pipe road F3b, connect one on lateral F42
Valve V4, valve V4 downstream communication to heater.Heater heats the desorption of output high temperature after the gas from lateral F42
Gas enters the desorption region 22 of absorption idler wheel by valve V3.In two concentration inductors 41 setting processing gas into
In feed channel F0, the VOC constituent concentration being able to detect in the gas to be processed of input, concentration sensor 43 is arranged in processing gas
In exhaust pipe F1, VOC constituent concentration in the gas for detecting output.
It include an initial shift and second working stage in VOC processing system operational process of the present invention, the
VOC processing system only carries out VOC ingredient absorption in one working stage, without desorption；In second working stage, adsorb on idler wheel
Desorption region is performed simultaneously the desorption and binding domain of VOC ingredient to the absorption of VOC ingredient.It is driven in initial shift
Blower 10 drives a large amount of gases to be processed to enter the binding domain 20 of absorption idler wheel, two VOC concentration inductors detections flow into and
The VOC constituent concentration of outflow absorption idler wheel binding domain 20, valve V3, the V4 simultaneously closed off in VOC processing system shown in Fig. 2 make
Obtaining in cooling air pipe F2a, F2b and desorption gas pipeline F3a, F3b does not have gas flowing, and cooled region 24 is not cold at this time
But gas flows through, and input high power is not needed in heater yet to heat the gas flowed through, two valves at heater both ends
V3, V4 are closed so that forming the space of a closure in heater, it is only necessary to input the power P l of very little it is ensured that heater
Middle heater strip maintains enough thermal starting standby temperature (such as 210 degree), as long as conveying high heating power under standby temperature
Ph, can make heater strip be rapidly reached 300-400 degree within a very short time, and heating desorption gas reaches about 200 degree.If long
Lesser input power Pl is not maintained in time standby so that heater strip Temperature fall has arrived room temperature, need half an hour with
The heating of upper high power can be only achieved required high temperature, response speed will lead to slowly very much partial adsorbates saturation roller area can not and
When be desorbed, adsorption rate reduce.
When VOC concentration is higher in gas to be processed, absorption idler wheel saturation time also can be shorter, when saturated between be short to
1-2 hours, even if heater strip does not input heating power in heater, by natural cooling, the temperature of heater strip was all also able to maintain
On the thermal starting standby temperature (such as 210 degree) of needs, so the power P l of initial shift input can be zero.Work as VOC
When absorption idler wheel reaches saturation in processing system, the adsorption rate of idler wheel will be slow decline, even if heater adds from room temperature cold start-up
The desorption temperature of heat about 300-400 to needed for being desorbed, time-consuming half an hour, the VOC composition quality being leaked therebetween is also little, right
It can receive in the not harsh application of environmental requirement.Even if causing part VOC ingredient to leak through because idler wheel absorption is saturated
, after the second working stage desorption, these gases for containing a small amount of VOC ingredient can also be sent into VOC processing again
System is adsorbed, so standby temperature also may include the cold start-up standby temperature close to room temperature, input power Pl is zero.To
Machine temperature setting is cold start-up standby temperature (20-100 degree), since heating speed is slow in the second working stage, although having a small amount of
The leakage of VOC ingredient, but the heating power since initial shift is greatly reduced, energy-saving effect is more preferable, and reveal
Part can also be adsorbed completely in subsequent adsorption process.So the adsorption saturation of short time not will cause serious shadow
It rings, so being also able to achieve goal of the invention of the invention, belongs to the embodiment of the present invention.
After first stage carries out enough long-times, by having detected or having calculated the adsorbance of absorption idler wheel known to data
Or the amount of saturation will be reached, it just needs to switch into the second working stage when absorption efficiency drops to certain numerical value.It can lead to
Two VOC concentration sensors 41,43 are crossed to realize above-mentioned detection, for example only obtain the to be processed of inflow using concentration sensor 41
The VOC concentration of gas, it is known that inflow gas flow, by integral to VOC concentration or cumulative can extrapolate first
Stage running certain time (ta) adsorbs the VOC composition quality of the absorption on idler wheel afterwards, if soon close to (saturation quality of adsorption
70-90%) absorption idler wheel saturated extent of adsorption, so that it may controlling each valve, heater by controller act switching
Operating mode.Adsorption rate (the number of 1- sensor 43 can also be calculated by the concentration proportion of two concentration sensors 41,43
41 numerical value of value/sensor), when adsorption rate is lower than preset value, such as less than 95% when, which illustrates to adsorb on idler wheel, there are partial adsorbates
Saturation, adsorption rate, which is begun to decline, influences adsorption effect, so being also required to switching working mode at this time.Initial shift to
It in second working stage conversion process, needs to open valve V4, high power Ph is inputted into heater, while switching V3 state to make
The high-temperature gas for getting self-heating device flows through V3, and the connection of shutdown and lateral F41 opens driving blower 30 and makes that gas is desorbed
Body circulation is realized to the desorption that region is desorbed on idler wheel.It additionally needs that idler wheel is driven slowly to rotate, desorption region in this way is being revolved
Entire idler wheel is enabled to obtain uniform desorption and regeneration during turning.
Into the desorption gas of the second working stage post-heater output high temperature, these high-temperature gases to be accumulated in entire
The VOC ingredient adsorbed on the desorption region 22 of idler wheel is desorbed, while still continuing what absorption flowed through on binding domain 20
VOC ingredient in gas to be processed, so the second working stage is approached with the working method of VOC processing system in the prior art,
It is adsorbed and is desorbed on idler wheel simultaneously.It is very short that second working stage executes the time, it is only necessary to adsorb idler wheel rotation at least one
Week or 2-3 weeks, so that initial shift can be switched into again by realizing desorption on entire idler wheel.Second
As long as the rotation speed for adsorbing idler wheel in working stage can guarantee complete desorption, but rotation speed also results in very much slowly
High power input time, section was too long in heater, and energy-saving effect weakens, so optimal rotation speed is that 3-8 turns/hour.
From the second working stage into initial shift conversion process, due in the second working stage be desorbed region 22
It can be heated to higher temperature (being greater than 180 degree) by high-temperature gas, can not directly be adsorbed, so needing to make in a short time cold
But gas flows through the region for just completing desorption, so need to control three-way valve V3 so that cooling gas flow through pipeline F2a,
F2b, F41, valve V3 are discharged by F3a, F3b, simultaneously close off valve V4, so that heater both ends are turned off again, are formed
Closed space, the power for reducing or completely cutting through input heater make temperature in heater be gradually decrease to standby temperature.
As long as absorption idler wheel in this way turns over very little angle, so that after the desorption region 22 of high temperature is sufficiently cooled, so that it may be normally carried out
It adsorbs, the connection of valve V3 Yu lateral F41 can be closed at this time, close driving blower 30, be again introduced into the first work
Make the stage.
It is the present invention as shown in Figure 3 in initial shift, the second working stage and from the second working stage to the first work
Make the variation figure of parameters in the switch process of phase transition.Driving motor 30 wherein is opened at the ta moment, to heater
Heating power Ph is supplied, connection valve V4 flows desorption gas to desorption idler wheel by heater, valve V3 and pipeline F41
Connection maintain off-state.Stop supplying heating power to heater at the tb moment, disconnects valve V4, open valve V3, make
The connection of pipeline F3b and pipeline F41 are obtained, the operating of driving motor 30 is maintained, until closing valve V3 and driving wind to the tc moment
Machine 30.As long as the rotation speed for wherein adsorbing idler wheel in initial shift, which is greater than zero, arbitrarily to be selected, the second working stage
Rotation speed cannot be too fast, be advisable so that the VOC ingredient accumulated on idler wheel can be desorbed completely.
The duration that initial shift maintains in the present invention is influenced by gas concentration to be processed and absorption idler wheel adsorbance,
But since there are two VOC concentration sensors, the time span of initial shift can be made to reach maximum value, that is, pole
The time of the maintenance standby temperature of low-power Pl reaches maximum, can generally achieve several hours, even up to 5 hours or more.
Second working stage, that is, the time span of high power Ph heating desorption, it is only necessary to can be realized as to whole within about 10-30 minutes
The complete desorption of a absorption idler wheel.The power P l of standby temperature is maintained to be influenced by the thermally conductive parameter of heater housing, heater is logical
Often external is all made of heat-barrier material, thus it is seldom to external diffusion, and heat is taken away without bulk gas inflow, therefore to maintain
Standby temperature in heater, Pl power can be very low, and Pl can be lower than the 1/4 or even 1/10 of Ph.So using of the invention
VOC processing system and the method for operation can obtain highly significant energy-saving effect compared with the prior art.
It is the schematic diagram of another embodiment of the present invention shown in Fig. 4, basic structure and the present invention are shown in Fig. 2 identical, mainly
Difference is that the valve V3 ' being connected on pipeline F3b without lateral F41 also needs not be three-way valve, two-way valve
It can realize goal of the invention.There is no switch process in the VOC processing system work of this structure, in work as shown in Figure 3
In the process, driving blower 30, valve V3, V4 and heater power input have just been simultaneously turned off at the tb moment, has been at the tb moment
Region 22 is desorbed in the absorption idler wheel of the condition of high temperature, in subsequent rotation by not having cooling air-flow to be cooled down when cooling pipe, revolves
The excessively high adsorption rate that will lead to of a bit of time internal cause temperature gone to up to adsorption zone is extremely low, but gas to be processed also energy band itself
Big calorimetric is walked, so this period is very short, the VOC amount of leakage is smaller, and a small amount of VOC ingredient reveals this disadvantage relative to very big width
This energy saving technical advantage of degree can be ignored.
In addition, valve V4 also can be set on F2a on pipeline F2b in addition to can be set, as long as can be in the first work
Stop supplying and can dissipating to avoid heat in heater to heater as the stage, saves standby heating power.Valve V3 can also
To omit, the control of heater interior air-flow only can be achieved with by the control to valve V4 and driving blower 30, entering first
Valve V4 and driving motor 30 are closed when working stage, at this time in heater remaining heat and high-temperature gas one end by valve V4
Closing the other end does not have driving force, only will be slow diffusion, and heat dissipation capacity is smaller, so in standby initial shift still only
It needs a small amount of power that can maintain enough standby temperatures in heater, still there is greatly energy conservation effect compared with the prior art
Fruit.
Valve in the present invention can be the valve of manual switch, the valve that can also be driven with motor, pneumatic/hydraulic.Also
It can be the turnover panel that can be turned over, turnover panel is pushed to by air-flow when throughput is very big, and air-flow flows through heater and reaches absorption
Idler wheel, since gravity turnover panel is automatically fallen off, is realized when driving blower 30 to stop driving and blocks airflow line, so adopting
With can not needed when turnover panel driving valve event, it is only necessary to control driving blower 30 driving force can automatically control heating
Circulation/shutdown of air-flow or uninterrupted in device.
The present invention is in addition in such as Fig. 2 and 4 the embodiment described, including cooling pipe F2a, F2b, also can be omitted the pipe
Road, heater directly extracts a small amount of desorption gas from pipeline F1, or directly takes gas from pipeline F0, without flow through cooled region
24.Absorption idler wheel also only remains binding domain 20 and desorption region 22 at this time, and there is no cooled regions 24.Because in the present invention
Absorption idler wheel is all only adsorbed in most times, is desorbed without heating, only in the very short time of the second working stage
The interior primary desorption operation of progress, absorption idler wheel are not fully cooled in a short time, lead to the desorption area for just completing heating desorption
Domain turns to the corresponding binding domain of processing gas pipeline, can not effectively be adsorbed because temperature is excessively high, finally make VOC ingredient
Leakage, but these are revealed for the air mass flow that the entire duty cycle (the+the second working stage of initial shift) is flowed through
Amount ratio it is very low, so can receive and the effective embodiment of the present invention.
Cooling air pipe F2a of the invention also may be coupled to processing gas exhaust pipe F1, such cooling gas pipe
Road F2a is located in the right side that idler wheel is adsorbed in Fig. 2/4, and the cooling gas from exhaust pipe F1 flows through the cooling in absorption idler wheel
The pipeline F2b being located on the left of absorption idler wheel is reached behind region 24, is then entered by desorption gas admission line F3b and is similarly positioned in
The heater on the left of idler wheel is adsorbed, the desorption region on the left of absorption idler wheel is passed through after heating, finally from the right side of absorption idler wheel
Side flows into desorption exhaust pipe road F3a.So cooling air pipe and desorption gas pipeline of the invention can according to need selection
Any side of absorption idler wheel is set, the structure as shown in Fig. 2/4 is not limited to, as long as can be effective in initial shift
Shutdown heater in air-flow, and initial shift execute a period of time after accurately judge working condition switch
Signal opens heater in the second working stage, so that different zones carry out the absorption of VOC ingredient simultaneously and take off on absorption idler wheel
It is attached, it can be achieved with the energy-saving purpose of the present invention.Furthermore in initial shift, valve, which may not be, completely closes shape
State, but the very little that the aperture of valve needs to be arranged, only a small amount of air-flow can flow through valve and heater, input in heater
Seldom power, so that exporting a small amount of high-temperature gas in heater.So valve opening is maintained at the embodiment of minimum state,
Big energy can be also saved compared with the prior art.Valve opening is adjusted to maximum again when entering the second working stage, simultaneously
High power is inputted in heater to heat air-flow to absorption idler wheel and be sufficiently desorbed.
The present invention provides another embodiment, and heater both ends are cut off by valve in initial shift, is desorbed simultaneously
Admission line F3b is connected to processing gas admission line F0 by other pipelines, so that inputting in desorption inlet pipe road F3b wait locate
Process gases, these gases to be processed flow into the desorption area of absorption idler wheel, and area is desorbed at this time can adsorb the VOC ingredient flowed through, institute
It is absorption VOC so that 22 actual functional capability of region to be desorbed at this time.Likewise, can also be in the first work in cooling air pipe F2a, F2b
Make to flow into gas to be processed in the stage for a long time, so that the actual efficacy of cooled region 24 is also absorption VOC gas.Because of the invention
Initial shift in the air inlet at heater both ends and outlet pipe can be cut off by valve, it is entire to adsorb on idler wheel
Three regions desorption region 22, cooled region 24, binding domain 20 can be used as binding domain, that is, present invention tool simultaneously
There is bigger adsorption area, can only be adsorbed compared with prior art in adsorption zone 20, is capable of handling in the unit time of the invention more
Gas.It is above-mentioned by cooled region 24 and desorption treated in region 22 air, flow through respective independent tubes and be connected to processing gas
Body exhaust pipe F1, is finally discharged to the space for needing pure air.
It is closed in initial shift in the above embodiment of the present invention by valve V4, the V3 in heater upstream or downstream
Air-flow in heater, same above-mentioned valve can also be directly integrated in heater body, as long as can be in the present invention first
The air-flow for reducing or completely closing heater in working stage can be achieved with the present invention and substantially save the target that can be got over.
The present invention passes through control desorption gas exhaust to realize that valve can also be not provided with by reducing the air-flow in heater
The revolving speed of driving blower 30 in pipeline controls the air pressure in heater downstream, so that being driven on the heater of the influence of blower 10
It swims the pressure of admission line and the air pressure in heater downstream line F3b approaches, can thus make the gas flowed through in heater
Very little is flowed, to slow down the dissipative velocity of heat in heater.Drive blower 30 that there is biggish turn in the second working stage
Speed, so that air pressure is lower than the air pressure in heater upstream inlet pipeline, the desorption of larger flow in desorption gas pipeline F3a, F3b
Gas flow flows through heater, absorption idler wheel, desorption gas exhaust pipe and is discharged.Blower 30 is driven in initial shift
Revolving speed it is smaller, the pressure in low pressure and heater upstream inlet pipeline generated is close, so the gas of only very little flow
Cognition flows through heater, so heat dissipation in the case where no valve in heater can also be seldom, also can be realized
The energy-efficient purpose of the present invention.
Controller in the present invention can be according to the VOC concentration inductor monitoring absorption idler wheel being arranged in VOC processing system
Adsorbed state, once discovery VOC gas adsorption rate have dropped, just illustrate adsorb idler wheel start to be saturated, VOC processing system
The second working stage will be transformed into from initial shift.In two working stage conversion processes, controller needs to export
First control signal is significantly increased with controlling the heating power in heater from the standby power in initial shift to second
The desorption power of working stage, to complete the desorption to absorption idler wheel in the second working stage.Controller will also export simultaneously
Two control signals are to control the air-flow in heater, and wherein the air-flow in initial shift can be with very little or substantially without gas
Stream needs to have enough air-flows in the second working stage to complete the desorption to absorption idler wheel.Wherein second control signal can
It also can control the valve that heater itself integrates to control the valve being located in heater upstream or downstream line, so that stream
The air-flow for crossing heater significantlys change.Second control signal also can control one in heater upstream or downstream line
The revolving speed of a driving blower, by the control to driving blower so that the turnover panel shape valve in heater upstream or downstream line
Automatic switch or heater upstream and downstream air pressure are close, this also to indirectly control heating in such a way that control drives blower
Throughput in device.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (22)
1. a kind of VOC processing system, comprising:
Rotatable absorption idler wheel, including binding domain, are desorbed region and cooled region；
Blower is handled, the processing gas of the ingredient containing VOC is delivered to by the binding domain the by a processing gas admission line
One end, a processing gas exhaust pipe are connected to the second end of the binding domain, export purified processing gas；
One heater includes that an air-flow input is connected to an admission line, and the heater further includes air-flow output
End, the one end in the desorption region is connected to by a desorption gas admission line, and a desorption gas exhaust pipe is connected to
The other end in the desorption region, the desorption gas with high concentration VOC is discharged；
It further include the setting of the first VOC concentration inductor in the processing gas admission line or processing gas exhaust pipe, one
Controller receives the concentration signal from the first VOC concentration inductor, and controls the heating according to the concentration signal
Device has different heating powers in initial shift and the second working stage, wherein the second of the input of the second working stage adds
The air-flow that thermal power can be such that heater exports flows into the desorption region, and the VOC ingredient being desorbed on the absorption idler wheel, the
First heating power of one working stage input is lower than second heating power, so that the temperature in heater maintains one
Standby temperature.
2. VOC processing system as described in claim 1, wherein the admission line of heater upstream, heater downstream desorption
At least one first valve is provided in gas inlet pipeline, desorption gas exhaust pipe, the controller controls the first valve
There is the first aperture in the second working stage, so that flowing through the gas of first valve has first flow, described the
There is the second aperture, so that desorption gas stops flowing or flow is less than the first flow when one working stage.
3. VOC processing system as claimed in claim 2, wherein the admission line of heater upstream includes a cooling gas air inlet
Pipeline is connected to one end of absorption idler wheel cooled region, and a cooling gas exhaust pipe is connected to the absorption idler wheel cooled region
The other end and the heater air-flow input between.
4. VOC processing system as claimed in claim 3, wherein the setting of the first valve is in the cooling gas admission line or cold
But on gas exhaust pipeline, the controller controls first valve and turns off in initial shift, so that heater is the
There is no air-flow to flow through in one working stage.
5. VOC processing system as claimed in claim 4, wherein further including that second valve is located at the desorption gas
On admission line, first valve is located on cooling gas admission line or cooling gas exhaust pipe, in the first work
The first and second valve being in close state in stage to form closed space in heater.
6. VOC processing system as claimed in claim 5, wherein further including a lateral on the cooling gas exhaust pipe
It is connected to second valve, second valve is three-way valve.
7. VOC processing system as described in claim 1 is used for wherein being additionally provided with one on the desorption gas exhaust pipe
The driving blower of desorption gas is discharged, controlling the driving blower in initial shift has the first revolving speed, in the second work
Stage has the second revolving speed, wherein the first revolving speed is lower than second revolving speed, so that heater downstream in initial shift
Desorption gas admission line and the admission line of heater upstream have close air pressure.
8. VOC processing system as claimed in claim 7, it is characterised in that: wherein the admission line of the heater upstream or
At least one first valve, first valve are provided in the desorption gas admission line in person downstream, desorption gas exhaust pipe
Men Weiyi turnover panel is turned in the second working stage turnover panel by the air-flow promotion that driving blower drives, in initial shift,
Blower is driven to close the turnover panel closed gas flow pipeline.
9. VOC processing system as described in claim 1, which is characterized in that it further include the 2nd VOC concentration inductor, described
One of one VOC concentration inductor and the 2nd VOC concentration inductor are arranged in processing gas admission line, another setting is being handled
In gas exhaust pipeline, the controller receives the concentration information from the first and second VOC concentration inductors, according to two
The information of VOC concentration inductor determines the execution time span of the initial shift.
10. a kind of operation method of VOC processing system, the processing system includes: absorption idler wheel, heater, driving blower, control
Device and Duo Gen processed are connected to the gas pipeline of the different zones on absorption idler wheel, wherein including an at least valve in the gas pipeline
Door, the operation method of the VOC processing system include:
The initial shift of alternate cycles and the second working stage,
Gas to be processed is passed through to the binding domain of the absorption idler wheel in initial shift, controlling the valve makes to heat
There is no air-flow to flow through or flow through with first flow air-flow in device, the power for inputting heater is the first power, so that heater
Internal temperature is higher than standby temperature lower than desorption temperature；
Gas to be processed is continually fed into the binding domain of the absorption idler wheel in second working stage, controls the valve and to have
There is the air-flow of second flow to flow into the heater, and flow into the desorption region on absorption idler wheel, the power for inputting heater is
Second power, the air-flow of heater output enable to the VOC ingredient desorption adsorbed in desorption region；
Wherein second power is greater than the first power, and the time span of initial shift is greater than the time of the second working stage
Length, first flow are less than second flow.
11. operation method as claimed in claim 10, wherein VOC processing system further includes VOC concentration inductor, according to VOC
The output concentration signal of concentration inductor is transformed into the second working stage from initial shift.
12. operation method as claimed in claim 11, wherein VOC concentration inductor measures binding domain stream on absorption idler wheel
Enter the VOC concentration values of gas and the VOC concentration values of binding domain eluting gas, when the VOC concentration numbers of the eluting gas
When value and the ratio of the VOC concentration values of inflow gas are greater than a preset value, the second working stage is switched into.
13. operation method as claimed in claim 11, in second working stage into initial shift conversion process
It further include a switch process, the conversion process, which closes the valve or reduces the valve opening, not having in heater
There are air-flow or flow to be less than or equal to second flow, the power for inputting heater is less than or equal to the first power, while air-flow flows through
Cooled region on the absorption idler wheel, so that idler wheel is cooled to the temperature that can adsorb VOC ingredient.
14. operation method as claimed in claim 11, wherein the time span of initial shift is greater than the second working stage
Time span 2 times or more.
15. operation method as claimed in claim 11, wherein the second power is greater than 4 times of the first power.
16. operation method as claimed in claim 11 wherein in initial shift, controls the driving blower and stops fortune
Row, or lower than the running speed in initial shift, so that the valve in heater upstream or downstream line is automatically shut down,
The valve is turnover panel shape.
17. operation method as claimed in claim 11 turns off the valve in the initial shift, so that heating
There is no air-flow to flow through in device, while gas to be processed continues to flow into desorption region or the cooled region of absorption idler wheel.
18. a kind of operation method of VOC processing system, the processing system includes: absorption idler wheel, heater, processing gas drive
Dynamic blower, desorption gas driving blower, controller and Duo Gen are connected to the gas pipeline of the different zones on absorption idler wheel, described
The operation method of VOC processing system includes:
The initial shift of alternate cycles and the second working stage,
In initial shift, processing gas drives blower to drive gas to be processed, so that gas to be processed is passed through the suction
The binding domain of attached idler wheel, controlling the desorption gas driving blower has the first revolving speed, and first revolving speed to heat
Air-flow has first flow in device, and the power for inputting heater is the first power, so that heater body temperature is lower than desorption temperature
Degree is higher than standby temperature；
In second working stage, gas to be processed is continually fed into the binding domain of the absorption idler wheel, controls the desorption gas
Drive blower that there is the second revolving speed, second revolving speed makes the air-flow with second flow flow into the heater, and flows into
The desorption region on idler wheel is adsorbed, the power for inputting heater is the second power, and the air-flow of heater output has desorption temperature,
Enable to the VOC ingredient desorption adsorbed in desorption region；
Wherein second power is greater than the first power, and the time span of initial shift is greater than the time of the second working stage
Length, first flow are less than second flow, and the first revolving speed is less than the second revolving speed.
19. a kind of controller for VOC processing system, the VOC processing system includes: absorption idler wheel, heater, driving wind
Machine, VOC concentration sensing device and Duo Gen are connected to the gas pipeline of the different zones on absorption idler wheel,
The controller includes an at least signal input part, for receiving the VOC concentration sensing device in VOC processing system
VOC concentration signal, the controller control the work of VOC processing system in initial shift and second according to VOC concentration signal
Alternate cycles between working stage,
The controller further includes two control signal outputs:
First control signal output end is for exporting heater power signal, and heater is according to the heater power signal the
The first heating power and the second heating power are exported respectively in one working stage and the second working stage；
Second control signal output end is for exporting heater flow signal, and the heater flow signal is for controlling heater
In air-flow so that the air-flow for flowing through heater is respectively provided with first flow and in initial shift and the second working stage
Two flows；
Wherein first heating power is less than second flow less than the second heating power, first flow.
20. controller as claimed in claim 19, wherein heater flow control signal is output to the VOC processing system
A valve in system, so that the valve opening changes, the valve is located at the pipeline of heater upstream or downstream or adds
In hot device.
21. controller as claimed in claim 19, wherein absorption idler wheel includes binding domain and desorption region, desorption pipeline with
Desorption idler wheel is connected, and the heater flow control signal is output to the driving blower in desorption pipeline, so that driving blower
There is the first revolving speed and the second revolving speed in initial shift and the second working stage, wherein the first revolving speed is less than the second revolving speed.
22. controller as claimed in claim 19, wherein the VOC processing system includes processing gas admission line and processing
Gas exhaust pipeline, the VOC concentration sensing device include being located in processing gas admission line and processing gas exhaust pipe
The first and second VOC concentration inductors, the VOC that the controller is inputted according to the first and second VOC concentration inductor
The degree of saturation of concentration signal judgement absorption idler wheel, determines that VOC processing system turns from initial shift to the second working stage
Change the moment.
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| CN201710812064.5A CN109482038B (en) | 2017-09-11 | 2017-09-11 | VOC controller, processing system and operation method |
| TW107129040A TWI680794B (en) | 2017-09-11 | 2018-08-21 | VOC processing system, its controller and its operating method |
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| CN110369208A (en) * | 2019-07-02 | 2019-10-25 | 佛山汉龙智能科技有限公司 | A kind of auto spray painting circulated air control system and control method |
| CN113082943A (en) * | 2021-03-22 | 2021-07-09 | 苏州新盛超净化系统有限公司 | Energy-saving method of VOC (volatile organic compound) removal system |
| CN114137155A (en) * | 2021-11-03 | 2022-03-04 | 力合科技（湖南）股份有限公司 | Flow path design of multi-gas dynamic calibrator |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201912236A (en) | 2019-04-01 |
| CN109482038B (en) | 2024-03-12 |
| TWI680794B (en) | 2020-01-01 |
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