CN107504506A - One kind catalysis burning purification technique and its device - Google Patents
One kind catalysis burning purification technique and its device Download PDFInfo
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- CN107504506A CN107504506A CN201710560961.1A CN201710560961A CN107504506A CN 107504506 A CN107504506 A CN 107504506A CN 201710560961 A CN201710560961 A CN 201710560961A CN 107504506 A CN107504506 A CN 107504506A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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Abstract
The invention discloses one kind to be catalyzed burning purification technique and its device.The technique and device are first by organic exhaust gas and air and/or oxygen mix, can be according to the demand of subsequent catalyst ignition temperature, the mixed proportion of flexible modulation between the two, it not only ensure that organic exhaust gas concentration is outside explosion limit in gaseous mixture, more importantly it has been to regulate and control subsequent catalyst ignition temperature, has prevented to be catalyzed the temperature runaway phenomenon of burning zone；Then gaseous mixture is divided into two parts, a part carries out catalysis burning, remainder and the gaseous mixture of catalysis burning zone outlets at different levels are exchanged heat, through the above way, it can in time and neatly adjust two-part amount, and the temperature of gaseous mixture for entering subordinate's catalysis burning is maintained using remainder, catalysis Combustion Energy is steadily carried out, it is therefore prevented that temperature runaway phenomenon occurs.
Description
Technical field
The invention belongs to waste gas purification technical field, and in particular to one kind catalysis burning purification technique and its device, the work
Skill and its device are especially suitable for organic exhaust gas, oil field or the seam mining process of the middle low concentration discharged in industrial processes
The purified treatment of the waste gas containing low-concentration methane of middle release.
Background technology
In the production process of some chemical industries, it can discharge based on the organic components such as benzene, hexamethylene and dimethylbenzene
Organic exhaust gas；During oil exploitation, the associated gas based on methane and low-carbon chain hydrocarbon can be discharged；In seam mining mistake
Cheng Zhong, the methane gas based on methane can be discharged.Above-mentioned organic exhaust gas need to can just be emitted into the external world after improvement.At present, state
The inside and outside common method for administering organic exhaust gas has three kinds：Liquid absorption method, Production by Catalytic Combustion Process and active carbon adsorption.Because catalysis is fired
The burning method advantage such as have initiation temperature low, therefore as the method for optimizing of VOCs treatment.
Production by Catalytic Combustion Process is to make organic exhaust gas burn below ignition temperature under oxidation catalyst effect to generate CO2With
H2O, therefore accurately the temperature in control course of reaction is particularly important, and otherwise easily causes hydrogen-catalyst reactor bed temperature runaway.
In order to control the temperature in course of reaction, the A of Chinese patent literature CN 105650651 disclose a kind of high-concentration organic waste gas
Purifying treatment method, organic matter carries out part in every section of bed and urged in the mode waste gas that the technology passes through sectional oxygen supply
Change combustion reaction, control every section of bed outlet exhaust temperature, and pass through heat in the organic exhaust gas outlet of the last period beds
Amount retracting device is connected with the organic exhaust gas import of latter section of bed, and then reclaims the reaction heat that catalysis burning discharges.
Above-mentioned technology can supplement oxygen needed for catalyticing combustion process by the way of sectional oxygen supply, but because organic exhaust gas has
Have that fluctuation of concentration scope is big, from hundreds of to hundreds of thousands mg/m3, and oxygen-supplying amount depends on the concentration of remaining organic exhaust gas, therefore
Oxygen-supplying amount can fluctuate back and forth with the number of organic exhaust gas concentration, in actual production, it is difficult to realize the accurate and steady confession of oxygen
Should, cause oxygen supply insufficient, catalysis burning is difficult to continue progress, or oxygen supply is excessive, and catalysis burning is violent, and bed is easy
Temperature runaway, more have very it, it may occur that blast.
The content of the invention
Therefore, to be solved by this invention is that temperature control is poor, the easy temperature runaway of beds scarce in existing catalysis burning
Fall into, and then a kind of temperature control of offer is flexible, beds are not easy temperature runaway, catalysis Combustion Energy self-sustaining is carried out, organic exhaust gas
The catalysis burning purification technique and its device that purifying rate is high, heat utilization ratio is high.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
Catalysis burning purification technique provided by the present invention, comprises the following steps：
Organic exhaust gas and air and/or oxygen mix, gaseous mixture is obtained, and adjust mixed proportion between the two, with regulation and control
Subsequent catalyst ignition temperature, ensure that organic exhaust gas concentration is outside explosion limit in the gaseous mixture；
The gaseous mixture is divided into two parts, after a part of gaseous mixture is heated, sequentially enters at least two-stage catalysis burning
Duan Jinhang catalysis burnings, remaining gaseous mixture and the gaseous mixture of catalysis burning zone outlets at different levels are exchanged heat, to control catalysis at different levels
The temperature of burning zone, finally gives purified gas.
Further, along and a part of gaseous mixture flow direction opposite direction, the remaining gaseous mixture successively with
The gaseous mixture of catalysis burning zone outlets at different levels is exchanged heat, and is finally mixed with a part of gaseous mixture.
Further, if the remaining gaseous mixture is divided into stem portion, individually exported per part with every grade of catalysis burning zone
Gaseous mixture is exchanged heat, and each several part after heat exchange mixes with a part of gaseous mixture.
Further, if the remaining gaseous mixture is divided into stem portion, at least partially along and a part of mixed airflow
Gaseous mixture of the opposite direction in dynamic direction successively with every grade of catalysis burning zone outlet is exchanged heat, remaining each several part individually with every grade
The gaseous mixture of catalysis burning zone outlet is exchanged heat, and the remaining gaseous mixture after heat exchange mixes with a part of gaseous mixture.
Further, in addition to by the part remaining gaseous mixture and the gaseous mixture of at least one stage catalyzing burning zone outlet mix
The step of conjunction.
Further, catalyst for catalytic combustion, the reaction efficiency of the catalysis burning are filled with the catalysis burning zone
Adjusted according to the amount of active component in the loadings and unit volume of the catalyst for catalytic combustion, ensure the catalysis combustion
The temperature rise for burning section is no more than 300 DEG C.
Further, the catalyst for catalytic combustion is made up of the active component of carrier and load thereon, the activity
The load capacity of composition is 0.04-0.15wt%；
The carrier is in honeycomb metal, honeycomb-like cordierite, aluminum oxide, zirconium oxide, titanium oxide or hexa-aluminate
It is at least one；
The active component is at least one of noble metal, transition metal oxide or Ca-Ti ore type inorganic matter.
Further, the noble metal is at least one of Pt, Pd, IR, In.
Further, the inlet temperature of a part of gaseous mixture is 200-450 DEG C；
The organic exhaust gas is that the concentration discharged in industrial processes is 300~15000mg/m3Organic exhaust gas, oil
The methane concentration discharged during field or seam mining is 500-70000mg/m3Methane gas, both mixture and wherein may be used
Combustion things total concentration is no more than 100000mg/m3；
The volume space velocity of the gaseous mixture is 5000-200000h-1；
Combustion pressure normal pressure is catalyzed in catalysis burning zones at different levels.
Further, catalysis burning zone is divided into three-level catalysis burning zone：First catalysis burning zone, second catalysis burning zone and
3rd catalysis burning zone, the first loadings for being catalyzed catalyst in burning zone are the 10-15% of its cumulative volume, and the second catalysis is burnt
The loadings of catalyst are the 20-30% of its cumulative volume in section, and the 3rd loadings for being catalyzed catalyst in burning zone are its totality
Long-pending 55-70%, by regulating and controlling loadings, the even running of catalyst combustion reaction is ensure that, further prevent bed temperature runaway and show
As.
In addition, present invention also offers one kind to be catalyzed combustion purification device, including housing, along the axial direction side of the housing
To, if dried layer catalyst combustion reaction bed is arranged at intervals successively, in addition to,
Mixing arrangement, for by organic exhaust gas and air and/or oxygen mix, obtaining gaseous mixture, and adjust between the two
Mixed proportion, to regulate and control subsequent catalyst ignition temperature, ensure that organic exhaust gas concentration is outside explosion limit in the gaseous mixture；
Heater, connect with the mixing arrangement and the catalyst combustion reaction bed, make to heat the gaseous mixture
It reaches into the initial reaction temperature needed for the catalyst combustion reaction bed；
Heat-exchanger rig, it is respectively arranged between adjacent catalyst combustion reaction bed, the air inlet of the heat-exchanger rig mixes with described
Attach together and put connection, the gaseous mixture for the gaseous mixture in the mixing arrangement to be exported with catalyst combustion reaction bed is exchanged heat.
Further, communicated with each other between the adjacent heat-exchanger rig, variable heat exchange area is provided with the heat-exchanger rig
Heat-transfer surface；
The gas outlet of the heat-exchanger rig connects with the heater；
Outlet side of the gas outlet of the mixing arrangement also with the catalyst combustion reaction bed connects, so as to by the mixing
Gas mixes with the gaseous mixture of the outlet side of the catalyst combustion reaction bed.
Further, connected close to the gas outlet of the heat-exchanger rig of the housing bottom with the heater；
Further, in addition to,
Main control unit, including display, logical editting control machine, frequency-variable controller, temperature controller, flow controller,
Consistency controller and pressure controller；
Air and/or oxygen conveying fan, are connected with the frequency-variable controller, are entered with control in the mixing arrangement
The conveying capacity of air and/or oxygen；
Temperature sensor, is arranged at air inlet and the gas outlet of catalyst combustion reaction beds at different levels, and with the temperature control
Device connects, to monitor the air inlet and air outlet temperature of catalyst combustion reaction beds at different levels in real time；
Flow sensor, it is respectively arranged between air and/or the oxygen conveying fan and the mixing arrangement, is described
Between the organic exhaust gas entrance of mixing arrangement, the mixing arrangement and the heater, and connect with the flow controller
Connect；
Concentration sensor, be respectively arranged at the organic exhaust gas entrance of the mixing arrangement, the mixing arrangement with it is described
Between heater, and it is connected with the consistency controller；
Pressure sensor, is arranged at air inlet and the gas outlet of catalyst combustion reaction beds at different levels, and with the Stress control
Device connects, to monitor the air inlet of catalyst combustion reaction beds at different levels and gas outlet pressure in real time；
Flow control valve, it is respectively arranged at the air inlet of the mixing arrangement, the mixing arrangement fills with the heat exchange
Between putting, between the mixing arrangement and the heater, and it is connected with the relay.
Compared with prior art, the present invention has the advantages that：
(1) the catalysis burning purification technique that the embodiment of the present invention is provided, first by organic exhaust gas and air and/or oxygen
Mixing, the mixed proportion of flexible modulation between the two, can not only ensure that in gaseous mixture according to the demand of subsequent catalyst ignition temperature
Organic exhaust gas concentration more importantly has been to regulate and control subsequent catalyst ignition temperature outside explosion limit, has prevented catalysis burning
The temperature runaway phenomenon of section；Then gaseous mixture is divided into two parts, a part carries out catalysis burning, and remainder burns with catalysis at different levels
The gaseous mixture of section outlet is exchanged heat, by the above-mentioned means, two-part amount in time and can be adjusted neatly, and utilizes remainder
Divide the temperature for the gaseous mixture for maintaining to enter subordinate's catalysis burning, catalysis Combustion Energy is steadily carried out, it is therefore prevented that temperature runaway phenomenon
Occur.
(2) the catalysis burning purification technique that the embodiment of the present invention is provided, the present invention will be with catalysis burning zone outlets at different levels
Gaseous mixture heat exchange after remaining gaseous mixture and be directly entered be catalyzed burning zone part gaseous mixture mixed, first utilize
Heat in remaining gaseous mixture, the load of heater is reduced, second regulate and control to enter catalysis combustion by remaining gaseous mixture
The tolerance in section is burnt, further ensure that catalysis Combustion Energy is steadily carried out, it is therefore prevented that temperature runaway phenomenon occurs.Meanwhile the present invention
Also directly some residual gaseous mixture can be mixed with the gaseous mixture of at least one stage catalyzing burning zone outlet, so does and on the one hand supplement
The amount of gaseous mixture, ensure the volume space velocity of gaseous mixture, on the other hand, can balanced gaseous mixture temperature, further ensure catalysis
Combustion Energy is steadily carried out, it is therefore prevented that temperature runaway phenomenon occurs.In addition, combustion catalyst in the also adjustable catalysis burning zone of the present invention
The amount of active component in loadings and unit volume, and then the reaction efficiency of catalysis burning is adjusted, maintain the temperature of catalysis burning zone
Rise in certain limit, further ensure catalysis Combustion Energy and steadily carry out, it is therefore prevented that temperature runaway phenomenon occurs.
(3) the catalysis burning purification technique that the embodiment of the present invention is provided, the beneficial effect of (1) and (2) is stated in realization
While, by ensure be catalyzed burning steady progress, and then can guarantee that reaction caused by thermostabilization, catalysis Combustion Energy is controlled oneself
It is continuous to carry out, improve the purifying rate of organic exhaust gas；The present invention technique controllable temperature scope is wide, strong adaptability, available for low concentration,
The processing of middle low concentration and middle/high concentration organic waste gas or the organic exhaust gas containing methane, have simple flow, stabilization safe for operation,
The advantages that applied widely.
(4) the catalysis combustion purification device that the embodiment of the present invention is provided, mixing arrangement, heater and heat exchange dress are set
Put, and be provided with triangular annexation, the equally beneficial effect with above-mentioned (1), (2) and (3).
(5) the catalysis combustion purification device that the embodiment of the present invention is provided, main control unit is set, controlled by programming in logic
Device runs main control software, passes through the preheating of pid control mode realization device, operation, monitoring, alarm, emergency disposal, collection and note
Data are recorded, the fluctuation to live mixture strength has adaptive and regulating power, and plus numerous emergency preplans, nothing can be achieved
Equipment safety, steady, automatic running under people is on duty.Furthermore the present apparatus can realize the controllable of catalyst combustion reaction bed tempertaure, protect
Demonstrate,prove catalyst combustion reaction bed to run in preference temperature, avoid catalyst sintering deactivation at high temperature, extend making for catalyst
Use the life-span.The present apparatus facilitates design to be processed into monoblock type skid mounted equipment, is integrated in one, and can realize whole Transporting, the peace of equipment
Dress and debugging.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation that combustion purification device is catalyzed in the embodiment of the present invention；
Fig. 2 is the structural representation of the heat-exchanger rig of the heat-transfer surface in the embodiment of the present invention with variable heat exchange area；
Description of reference numerals：
1- mixing arrangements；2- housings；3- pumps；4- frequency conversion fans；The temperature sensors of T1- first；T2- second temperatures sense
Device；T3- three-temperature sensors；The temperature sensors of T4- the 4th；The temperature sensors of T5- the 5th；The temperature sensors of T6- the 6th；
The temperature sensors of T7- the 7th；The temperature sensors of T8- the 8th；The temperature sensors of T9- the 9th；The temperature sensors of T10- the tenth；T11-
11st temperature sensor；F1- first flowmeters；F2- second flowmeters；The flowmeters of F3- the 3rd；The flowmeters of F4- the 4th；C1-
First concentration sensor；The concentration sensors of C2- second；The concentration sensors of C3- the 3rd；P- first pressure sensors；V1- is first-class
Control valve；V2- second flow control valves；The flow control valves of V3- the 3rd；The flow control valves of V31- the 3rd；V32- the three or two
Flow control valve；The flow control valves of V4- the 4th；H1- heaters；The heat-exchanger rigs of H2- first；The heat-exchanger rigs of H3- second；H4-
3rd heat-exchanger rig；CAT1- the first catalyst combustion reaction beds；CAT2- the second catalyst combustion reaction beds；The catalysis combustions of CAT3- the 3rd
Burn reaction bed；The gaseous mixtures of HG1- first；The gaseous mixtures of HG2- second；The gaseous mixtures of HG3- the 3rd；The gaseous mixtures of HG4- the 4th；HG5- the 5th
Gaseous mixture；The gaseous mixtures of HG6- the 6th；The gaseous mixtures of HG7- the 7th；The gaseous mixtures of HG8- the 8th；PG- purified gas.
Embodiment
In order to which the object, technical solutions and advantages of the present invention are better described, below in conjunction with specific embodiment to this hair
It is bright to be described further.The present invention can be embodied in many different forms, and should not be construed as limited to set forth herein
Embodiment.Conversely, there is provided these embodiments so that the disclosure will be thorough and complete, and the design of the present invention will be filled
Divide and be communicated to those skilled in the art, the present invention will only be defined by the appended claims.
Embodiment 1
A kind of catalysis burning purification technique is present embodiments provided, as shown in figure 1, comprising the following steps：
1) organic exhaust gas is taken out from organic waste source of the gas, the component content of the organic exhaust gas is as follows：CH4：35960mg/m3、C2
More than the hydrocarbon conversion into ethane equivalent：6179mg/m3、CO2For 12.0%, O2For 0.30%, remaining be N2, the organic waste
The flow of gas is 2700m3/ h, organic exhaust gas through fine de-sulfur and are equipped with fire retardant device, organic waste in advance before mixing arrangement is entered
Gas carries pressure, drains, can be directly entered in mixing arrangement without blower fan；
The air quantity regulating power of frequency conversion fan is controlled to measure the 90% of ratio for safety theory, in order to be advantageous to organic exhaust gas
Conversion, control oxygen is suitably excessive, and under concentration smooth conditions, the air capacity that frequency conversion fan is introduced into mixing arrangement is 1500m3/
H, gaseous mixture is mixed to form with organic exhaust gas, component content is as follows in the gaseous mixture：CH4：23100mg/m3, ethane equivalent：
4000mg/m3、CO2For 7.7%, O2For 7.5%, remaining be N2；
2) catalysis burning purification technique is using three-level catalysis burning zone：First catalysis burning zone, the second catalysis burning zone
With the 3rd catalysis burning zone, the intersegmental setting heat exchanger of each catalysis burning, the first loadings for being catalyzed catalyst in burning zone are it
The 15% of cumulative volume, the second loadings for being catalyzed catalyst in burning zone are the 25% of its cumulative volume, in the 3rd catalysis burning zone
The loadings of catalyst are the 60% of its cumulative volume.It is different according to composition in organic exhaust gas, the catalysis in each layer catalysis burning zone
Agent can use different catalyst formulations, and in the present embodiment, filling is low in the first catalysis burning zone and the second catalysis burning zone
Warm light-off catalyst, the low temperature light-off catalyst use integral honeycomb shape catalyst, loaded in the first catalysis burning zone by violet
The catalyst of the precious metals pt composition of green stone honeycomb support and load thereon, the load capacity of wherein precious metals pt exist
0.15wt%, the catalysis that the second interior filling of catalysis burning zone is made up of the precious metals pd of alumina honeycomb carrier and load thereon
The load capacity of agent, wherein precious metals pd is in 0.05wt%, the conversion for non-methane hydrocarbon；Filling is resistance in 3rd catalysis burning zone
High temperature catalyst, the catalyst being made up of the precious metals pd of zirconium oxide honeycomb support and load thereon, wherein precious metals pd
Load capacity is in 0.05wt%, the complete conversion for methane；
Gaseous mixture in step 1) is divided into two parts, a part of gaseous mixture is with air speed 10000h-1Into heater, and
After being heated to 300 DEG C, sequentially enter in the first catalysis burning zone and the second catalysis burning zone and carry out catalysis burning, remaining gaseous mixture
Sequentially enter in the second heat-exchanger rig and the first heat-exchanger rig and mixed with what two level catalysis burning zone and one stage catalyzing burning zone exported
Close gas to be exchanged heat, the temperature of burning zone is catalyzed with control, the gaseous mixture come out from two level catalysis burning zone after heat exchange enters
Entering in the 3rd catalysis burning zone and carry out catalysis burning, the gaseous mixture out of the 3rd catalysis burning zone out is exchanged heat with refrigerant,
Heat is reclaimed, finally gives purified gas；
After testing, the temperature rise of the first catalysis burning zone and the second catalysis burning zone is not higher than 200 DEG C, the 3rd catalysis burning
The temperature rise of section is not higher than 100 DEG C, and whole course of reaction operates steadily, and catalysis burning zone is catalyzed Combustion Energy certainly without temperature runaway phenomenon
Lasting to carry out, methane clearance is entirely urged in the clearance of 99.0%, more than C2 hydro carbons more than 99.9% in organic exhaust gas
Heat utilization ratio is more than 90% in change burning purification technique.
Embodiment 2
A kind of catalysis burning purification technique is present embodiments provided, is comprised the following steps：
1) organic exhaust gas is taken out from organic waste source of the gas, the component content of the organic exhaust gas is as follows：CH4：15000mg/m3、C2
More than the hydrocarbon conversion into ethane equivalent：5800mg/m3、CO2For 10.0%, O2For 0.50%, remaining be N2, organic exhaust gas
Before mixing arrangement is entered, through fine de-sulfur and fire retardant device be housed in advance, organic exhaust gas carries pressure, can without blower fan drainage
It is directly entered in mixing arrangement；
The air quantity regulating power of frequency conversion fan is controlled to measure the 50% of ratio for safety theory, in order to be advantageous to organic exhaust gas
Conversion, control oxygen is suitably excessive, and under concentration smooth conditions, the air capacity that frequency conversion fan is introduced into mixing arrangement is 1000m3/
H, gaseous mixture is mixed to form with organic exhaust gas, component content is as follows in the gaseous mixture：CH4：10000mg/m3, ethane equivalent：
3500mg/m3、CO2For 6.8%, O2For 7.0%, remaining be N2；
2) catalysis burning purification technique is using three-level catalysis burning zone：First catalysis burning zone, the second catalysis burning zone
With the 3rd catalysis burning zone, the intersegmental setting heat exchanger of each catalysis burning, the first loadings for being catalyzed catalyst in burning zone are it
The 10% of cumulative volume, the second loadings for being catalyzed catalyst in burning zone are the 30% of its cumulative volume, in the 3rd catalysis burning zone
The loadings of catalyst are the 60% of its cumulative volume.It is different according to composition in organic exhaust gas, the catalysis in each layer catalysis burning zone
Agent can use different catalyst formulations, and in the present embodiment, filling is low in the first catalysis burning zone and the second catalysis burning zone
Warm light-off catalyst, the low temperature light-off catalyst use integral honeycomb shape catalyst, are mainly used in the conversion of non-methane hydrocarbon；
The catalyst that filling is made up of the precious metals pt of cordierite honeycomb substrates and load thereon in first catalysis burning zone, wherein expensive
The load capacity of Pt metal is in 0.10wt%, and filling is by alumina honeycomb carrier and load thereon expensive in the second catalysis burning zone
The catalyst of metal Pd composition, wherein the load capacity of precious metals pd is in 0.04wt%；Filling high temperature resistant in 3rd catalysis burning zone
Catalyst, the load of the catalyst, wherein precious metals pd that are made up of the precious metals pd of zirconium oxide honeycomb support and load thereon
Amount is in 0.06wt%, the complete conversion for methane；
Gaseous mixture in step 1) is divided into two parts, a part of gaseous mixture is with air speed 100000h-1Into heater,
And after being heated to 450 DEG C, sequentially enter in the first catalysis burning zone and the second catalysis burning zone and carry out catalysis burning.Residue mixing
Gas can be again split into two parts, and a portion enters the second heat-exchanger rig, enter with the gaseous mixture of two level catalysis burning zone outlet
Row heat exchange, enters back into heater, and similarly, another part enters in the first heat-exchanger rig, with the outlet of one stage catalyzing burning zone
Gaseous mixture is exchanged heat, and enters back into heater, and the temperature of burning zone is catalyzed with control, and being catalyzed from two level after heat exchange is burnt
The gaseous mixture of section out, which enters in the 3rd catalysis burning zone, carries out catalysis burning, the gaseous mixture out of the 3rd catalysis burning zone out
Exchanged heat with refrigerant, reclaim heat, finally give purified gas；
After testing, the temperature rise of the first catalysis burning zone and the second catalysis burning zone is not higher than 150 DEG C, the 3rd catalysis burning
The temperature rise of section is not higher than 100 DEG C, and whole course of reaction operates steadily, and catalysis burning zone is catalyzed Combustion Energy certainly without temperature runaway phenomenon
It is lasting to carry out, in organic exhaust gas methane clearance in the clearance of 99.0%, more than C2 hydro carbons more than 99.99%, entirely
Heat utilization ratio is more than 91% in catalysis burning purification technique.
Embodiment 3
A kind of catalysis burning purification technique is present embodiments provided, is comprised the following steps：
1) methane gas discharged in the organic exhaust gas and oil extraction process discharged in industrial processes is collected, ensures two
Combustible total concentration is no more than 100000mg/m in the mixing organic exhaust gas of person's composition3, after testing, in both gaseous mixtures into
Divide content as follows：CH4：50000mg/m3, more than C2 the hydrocarbon conversion into ethane equivalent：8900mg/m3、CO2For 15.0%, O2
For 0.60%, remaining be N2, organic exhaust gas through fine de-sulfur and is equipped with fire retardant device, organic waste in advance before mixing arrangement is entered
Gas carries pressure, drains, can be directly entered in mixing arrangement without blower fan；
The air quantity regulating power of frequency conversion fan is controlled to measure the 150% of ratio for safety theory, in order to be advantageous to organic exhaust gas
Conversion, control oxygen it is suitably excessive, under concentration smooth conditions, the air capacity that frequency conversion fan is introduced into mixing arrangement is
4000m3/ h, gaseous mixture is mixed to form with organic exhaust gas, component content is as follows in the gaseous mixture：CH4：40000mg/m3, ethane work as
Amount：6500mg/m3、CO2For 9%, O2For 10.5%, remaining be N2；
2) catalysis burning purification technique is using three-level catalysis burning zone：First catalysis burning zone, the second catalysis burning zone
With the 3rd catalysis burning zone, the intersegmental setting heat exchanger of each catalysis burning, the first loadings for being catalyzed catalyst in burning zone are it
The 15% of cumulative volume, the second loadings for being catalyzed catalyst in burning zone are the 30% of its cumulative volume, in the 3rd catalysis burning zone
The loadings of catalyst are the 55% of its cumulative volume.It is different according to composition in organic exhaust gas, the catalysis in each layer catalysis burning zone
Agent can use different catalyst formulations, and in the present embodiment, filling is low in the first catalysis burning zone and the second catalysis burning zone
Warm light-off catalyst, the low temperature light-off catalyst use integral honeycomb shape catalyst, are mainly used in the conversion of non-methane hydrocarbon；
The catalyst that filling is made up of the precious metals pt of cordierite honeycomb substrates and load thereon in first catalysis burning zone, wherein expensive
The load capacity of Pt metal is in 0.15wt%, and filling is by alumina honeycomb carrier and load thereon expensive in the second catalysis burning zone
The catalyst of metal Pd composition, wherein the load capacity of precious metals pd is in 0.05wt%；Filling high temperature resistant in 3rd catalysis burning zone
Catalyst, the load of the catalyst, wherein precious metals pd that are made up of the precious metals pd of zirconium oxide honeycomb support and load thereon
Amount is in 0.05wt%, the complete conversion for methane；
Gaseous mixture in step 1) is divided into two parts, a part of gaseous mixture is with air speed 80000h-1Into heater, and
After being heated to 200 DEG C, sequentially enter in the first catalysis burning zone and the second catalysis burning zone and carry out catalysis burning, remaining gaseous mixture
Sequentially enter in the second heat-exchanger rig and the first heat-exchanger rig and mixed with what two level catalysis burning zone and one stage catalyzing burning zone exported
Close gas to be exchanged heat, the temperature of burning zone is catalyzed with control, the remaining gaseous mixture after heat exchange enters heater.After heat exchange
The gaseous mixture come out from two level catalysis burning zone, which enters in the 3rd catalysis burning zone, carries out catalysis burning, from the 3rd catalysis burning zone
Interior gaseous mixture out is exchanged heat with refrigerant, is reclaimed heat, is finally given purified gas；
After testing, the first catalysis burning zone temperature rise is no more than 200 DEG C, second and the 3rd the temperature rise of catalysis burning zone be not higher than
100 DEG C, whole course of reaction operates steadily, and catalysis burning zone is catalyzed Combustion Energy self-sustaining and carried out without temperature runaway phenomenon, organic waste
Methane clearance is entirely catalyzed burning purification technique in the clearance of 99.0%, more than C2 hydro carbons more than 99.9% in gas
Middle heat utilization ratio is more than 95%.
Embodiment 4
Present embodiments provide a kind of catalysis combustion purification device, including housing 2, along the axial direction of housing 2, successively between
If every setting dried layer catalyst combustion reaction bed, in addition to,
Mixing arrangement 1, for by organic exhaust gas and air and/or oxygen mix, obtaining gaseous mixture, and adjust between the two
Mixed proportion, to regulate and control subsequent catalyst ignition temperature, ensure that organic exhaust gas concentration is outside explosion limit in gaseous mixture；
Heater H1, connected with mixing arrangement 1 and catalyst combustion reaction bed, entrance is reached to heat gaseous mixture
Initial reaction temperature needed for catalyst combustion reaction bed；
Heat-exchanger rig, it is respectively arranged between adjacent catalyst combustion reaction bed, air inlet and the mixing arrangement 1 of heat-exchanger rig connect
Logical, the gaseous mixture for the gaseous mixture in mixing arrangement 1 to be exported with catalyst combustion reaction bed is exchanged heat.
As selectable embodiment, as shown in figure 1, in the present embodiment, the number of catalyst combustion reaction bed is three
It is individual, respectively the first catalyst combustion reaction bed CAT1, the second catalyst combustion reaction bed CAT2 and the 3rd catalyst combustion reaction bed
CAT3；Housing 2 is insulation shell made from insulation material；Heater H1 is electric heater or burning heater；
As selectable embodiment, as shown in figure 1, in the present embodiment, number and the catalysis of heat-exchanger rig are burnt
The number of reaction bed is adapted, and is also 3, respectively the first heat-exchanger rig H2, the second heat-exchanger rig H3 and the 3rd heat-exchanger rig
H4, the first heat-exchanger rig H2 can be tail gas pre-heater；
In above-mentioned catalysis combustion purification device, organic exhaust gas and air and/or oxygen are mixed by mixing arrangement 1 first
Close, can be according to the demand of subsequent catalyst ignition temperature, the mixed proportion of flexible modulation between the two, not only ensure that in gaseous mixture has
Machine exhaust gas concentration more importantly has been to regulate and control subsequent catalyst ignition temperature outside explosion limit, and it is anti-to have prevented catalysis burning
Answer the temperature runaway phenomenon of bed；Heater H1 and heat-exchanger rig are then set, gaseous mixture is divided into two parts, a part is catalyzed
Burning, the gaseous mixture that remainder exports with catalyst combustion reaction beds at different levels exchanged heat, by the cooperation of said apparatus, energy and
When and neatly adjust two-part amount, and maintain using remainder the temperature of gaseous mixture for entering subordinate's catalysis burning, most
Catalysis Combustion Energy is set steadily to carry out eventually, it is therefore prevented that temperature runaway phenomenon occurs.
As preferred embodiment, communicated with each other between adjacent heat exchange device, as shown in figure 1, in this embodiment, second changes
Thermal H3 air inlet connects with mixing arrangement 1, and gas outlet connects with the first heat-exchanger rig H2 air inlet, the 3rd heat exchange dress
Put H4 then can lead to heat transferring medium to be exchanged heat by pump 3 into it, reclaim heat.
Further, the heat-transfer surface of variable heat exchange area is provided with heat-exchanger rig, heat exchange can be adjusted flexibly as needed
Efficiency, as shown in Fig. 2 in the present embodiment, the second heat-exchanger rig H3 can be set to two heat exchanger tubes of parallel connection.
In order to using the heat in remaining gaseous mixture, reduce the load of heater, while regulate and control to enter catalysis burning instead
The tolerance in bed is answered, further ensures that catalysis Combustion Energy is steadily carried out, prevents temperature runaway phenomenon from occurring, the gas outlet of heat-exchanger rig
Connected with heater H1, in the present embodiment, close to the gas outlet of the heat-exchanger rig of housing bottom, namely the first heat-exchanger rig
H2 gas outlet connects with heater；
In order to supplement the amount of gaseous mixture, ensure the volume space velocity of gaseous mixture, while the temperature of balanced gaseous mixture, further protect
Card catalysis Combustion Energy is steadily carried out, prevent temperature runaway phenomenon from occurring, and the gas outlet of mixing arrangement 1 also goes out with catalyst combustion reaction bed
Gas end connects, so as to which gaseous mixture is mixed with the gaseous mixture of the outlet side of catalyst combustion reaction bed.
Including display, logical editting control machine, frequency-variable controller, temperature control further, in addition to main control unit,
Device, flow controller, consistency controller and pressure controller；
Air and/or oxygen conveying fan, are connected with frequency-variable controller, with control enter mixing arrangement 1 in air and/
Or the conveying capacity of oxygen；In the present embodiment, air and/or oxygen conveying fan can be frequency conversion fan 4；
Temperature sensor, air inlet and the gas outlet of catalyst combustion reaction beds at different levels are arranged at, and connected with temperature controller
Connect, to monitor the air inlet and air outlet temperature of catalyst combustion reaction beds at different levels in real time；In the present embodiment, temperature sensor
Number is 11, wherein 6 air inlets for being respectively arranged at catalyst combustion reaction beds at different levels and gas outlet, respectively the 3rd temperature
Sensor T3, the 4th temperature sensor T4, the 5th temperature sensor T5, the 6th temperature sensor T6, the 7th temperature sensor T7
With the 8th temperature sensor T8, residuals temperatures sensor is to be arranged at the first temperature sensor T1 of the air inlet of mixing arrangement 1, set
The second temperature sensor T2 that is placed between the second heat-exchanger rig H3 and the first heat-exchanger rig H2, be arranged at purified gas PG outlets the
Nine temperature sensor T9, the tenth temperature sensor T10 for being arranged at the 3rd heat-exchanger rig H4 heat transferring medium imports, it is arranged at the 3rd
11st TEMP T11 of heat-exchanger rig H4 heat transferring mediums outlet；
Flow sensor, as shown in figure 1, in the present embodiment, being respectively arranged at air and/or oxygen conveying fan with mixing
Attach together put first flowmeter F1 between 1, the second flowmeter F2 of organic exhaust gas entrance of mixing arrangement 1, mixing arrangement 1 with
The 3rd flowmeter between heater, meanwhile, in addition to be arranged at the 3rd heat-exchanger rig H4 heat transferring medium import the 4th
Flowmeter F4, and be connected with flow controller；
Concentration sensor, as shown in figure 1, in the present embodiment, being respectively arranged at the organic exhaust gas entrance of mixing arrangement 1
The first concentration sensor C1, the second concentration sensor C2 between mixing arrangement 1 and heater, meanwhile, in addition to purification
3rd concentration sensor C3 of gas outlet, and be connected with consistency controller；
Pressure sensor, air inlet and the gas outlet of catalyst combustion reaction beds at different levels are arranged at, and connected with pressure controller
Connect, to monitor the air inlet of catalyst combustion reaction beds at different levels and gas outlet pressure in real time.In addition, as shown in figure 1, it can also mix
The air inlet of device 1 sets first pressure sensor P.
Flow control valve, as shown in figure 1, in the present embodiment, first be respectively arranged at the air inlet of mixing arrangement 1
Flow control valve V1 and second flow control valve V2, first flow control valve V1 are used to empty, between mixing arrangement 1 and heat-exchanger rig
The 3rd flow control valve V3 (when heat-exchanger rig is arranged to two heat exchanger tubes of parallel connection, the is set on two heat exchanger tubes respectively
Three flow control valve V31 and the three or two flow control valve V32), the 4th flow control valve between mixing arrangement 1 and heater
V4, and be connected with relay.By controlling the aperture of flow control valve, to control heat exchange area and need the mixing being preheated
Tolerance, and then the temperature of flexible modulation control catalyst combustion reaction bed.
Main control unit is set, main control software is run by logical editting control machine, passes through pid control mode realization device
Preheating, operation, monitoring, alarm, emergency disposal, collection and record data, the fluctuation to live mixture strength have adaptive
And regulating power, plus numerous emergency preplans, can be achieved unattended lower equipment safety, steadily, automatic running.Furthermore
The present apparatus can realize the controllable of catalyst combustion reaction bed tempertaure, ensure that catalyst combustion reaction bed is run in preference temperature, avoid
Catalyst sintering deactivation at high temperature, extend the service life of catalyst.The present apparatus facilitates design to be processed into monoblock type skid
Equipment, there is simple flow, stabilization safe for operation, applied widely.
As shown in figure 1, the operation principle of above-mentioned catalysis combustion purification device is as follows：
For organic exhaust gas by certain metering than being mixed to get the first gaseous mixture HG1 with the air from frequency conversion fan 4, first is mixed
Close a part in gas HG1 and directly enter electric heater, another part enters the second heat-exchanger rig H3 (concretely tail gas pre-heater)
First time pre-heating temperature elevation is carried out, obtains the second gaseous mixture HG2, the second gaseous mixture HG2 through the first heat-exchanger rig H2 (concretely tails
Air preheater) again heat up after, mix with the gaseous mixture of bypass segment, then heated device H1 (concretely electric heater) preheat
The 3rd gaseous mixture HG3 after to temperature needed for reaction, reacted into the first catalyst combustion reaction bed CAT1, reacted
Four gaseous mixture HG4 cool after first heat-exchanger rig H2 (concretely tail gas pre-heater) heat exchange, the 5th mixing after cooling
Gas HG5 reacts into the second catalyst combustion reaction bed CAT2, and the 6th gaseous mixture HG6 of generation is (specific through the second heat-exchanger rig H3
Can be tail gas pre-heater) cool after heat exchange, the 7th gaseous mixture HG7 after cooling enters into the 3rd catalyst combustion reaction bed CAT3
Row reaction, through the 3rd heat-exchanger rig H4, (concretely steam generator or end water exchange heat reacted 8th gaseous mixture HG8
Device) after byproduct steam or hot water, obtain the purified gas PG that directly can be emptied through pipeline.
In above-mentioned operation principle, organic exhaust gas can set hydrocarbon before mixing arrangement 1 is entered on organic exhaust gas pipeline
Class detector, second flowmeter F2, first pressure sensor P etc., concentration, flow and pressure of organic exhaust gas etc. are monitored in real time.
When organic exhaust gas concentration, pressure and flow exceed the limit of system safety operation, system can send alarm signal, and will be organic
Waste gas switches to emptying pipeline, opens first flow control valve V1 and is vented.In the adjustable extent of system, organic exhaust gas is dense
During degree increase, the introduction volume of air is increased by frequency conversion fan 4；During changes in flow rate, drawn by adjusting the adjustment air of frequency conversion fan 4
Enter amount.
It is catalyzed the startup of combustion purification device：Heater H1 (concretely electric heater) is begun to warm up in device, is closed
The 4th flow control valve V4, the flow control valve V3 of standard-sized sheet the 3rd closed in bypass, allows the first gaseous mixture HG1, is introduced into second and changes
Thermal H3 (concretely tail gas pre-heater) carries out first time pre-heating temperature elevation, obtains the second gaseous mixture HG2, the second gaseous mixture
HG2 is mixed, then pass through after the first heat-exchanger rig H2 (concretely tail gas pre-heater) heats up again with the gaseous mixture of bypass segment
Heater H1 (concretely electric heater) is preheated to the 3rd gaseous mixture HG3 after temperature needed for reaction；
It is catalyzed the operation of combustion purification device：When the 3rd gaseous mixture HG3 reaches needed for the first catalyst combustion reaction bed CAT1
Inlet temperature after, catalyst starts to convert organic exhaust gas, releases heat, at this moment gradually reduces heater H1 power, allows
System is run by itself fuel gas oxidation heat liberation, is at this moment burnt by the three-temperature sensor T3 catalysis of monitoring first in real time
Reaction bed CAT1 inlet temperatures, the 3rd flow control valve V3 of adjustment switch confirm the first time preheating area that gaseous mixture needs,
The aperture for adjusting the 4th flow control valve V4 allows a first gaseous mixture HG1 parts to enter bypass, and another part enters the second heat exchange and filled
Put H3 and carry out first time pre-heating temperature elevation, the second gaseous mixture HG2 after heating is after the first heat-exchanger rig H2 heats up again, with bypass
Partial gaseous mixture mixes to obtain the 3rd gaseous mixture HG3.
Equipment operation starts PID programs, single-point or two point PID joint control modes using condition；By setting normal operation control
The control device automatic safe operation such as condition processed, exceeded triggering and return condition, emergency trigger condition.Above-mentioned normal fortune
Row control condition refer under equipment design parameter can safe normal operation for a long time condition；Exceeded condition refers to equipment at this
The energy safe normal operation of short time interior energy under part, but long-play can bring potential safety hazard and equipment and catalyst are caused to damage
Bad condition；Emergency trigger condition refers to potential safety hazard may occur in the short time or causes equipment and catalyst can not
The condition of inverse damage, specific control process are as follows：
It is catalyzed the PID monitoring and regulation of combustion purification device：Device is installed and runs PLC main control softwares, harvester system
The signals such as concentration, pressure, flow and temperature in system, while the instruction control frequency of frequency conversion fan 4, flow control valve can be sent
Switch and aperture, heater H1 PID regulation and cut-out.
Even running controls：As an example, the even running condition of setting device；When the 4th temperature sensor T4 temperature measuring points
Temperature>At 500 DEG C, start the PID control of the 4th temperature sensor；Make the frequency of frequency conversion fan 4 with the 4th TEMP
The change of the temperature of device temperature measuring point and change, control the 4th temperature sensor temperature measuring point temperature at 500 DEG C or so；When the 3rd temperature
Spend the temperature of sensor T3 temperature measuring points>At 320 DEG C, start three-temperature sensor T3 PID control；The 4th flow is set to control V4
Aperture change with the change of the temperature of three-temperature sensor T3 temperature measuring points, control three-temperature sensor T3 temperature measuring points
Temperature at 320 DEG C or so；
Exceeded trigger condition：The warning temperature of setting device, such as the temperature when the 4th temperature sensor T4 temperature measuring points>
At 650 DEG C, program enters temperature runaway control model, increases the frequency of frequency conversion fan 4 and introduces further amounts of air；When the 5th temperature passes
The temperature of the temperature of sensor T5 temperature measuring points or the 6th temperature sensor T6 temperature measuring points>At 650 DEG C；Controlled into program into temperature runaway
Pattern, improve the frequency of frequency conversion fan 4 and/or the 3rd flow control valve V3 aperture etc..
Exceeded triggering return condition：The temperature or the 6th temperature sensor T6 temperature measuring points of 5th temperature sensor T5 temperature measuring points
Temperature when returning in the range of even running, restart the PID control of the temperature of the 4th temperature sensor T4 temperature measuring points；
When it is returned in the range of even running, its PID control is run.
Emergency tackles condition：When a certain monitoring temperature spot exceedes the limiting value of setting, organic exhaust gas passes through first
Flow control valve V1 and second flow control valve V2 automatically switch to emptying；Frequency conversion fan keeps constant, treats that alarm temperature is down to
During safety value, and the temperature of the 4th temperature sensor T4 temperature measuring points<At 650 DEG C, then organic exhaust gas is switched into device automatically.System
System repeats above-mentioned running.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. one kind catalysis burning purification technique, comprises the following steps：
Organic exhaust gas and air and/or oxygen mix, gaseous mixture is obtained, and adjust mixed proportion between the two, it is follow-up to regulate and control
Ignition temperature is catalyzed, ensures that organic exhaust gas concentration is outside explosion limit in the gaseous mixture；
The gaseous mixture is divided into two parts, after a part of gaseous mixture is heated, at least two-stage catalysis burning zone is sequentially entered and enters
Row catalysis burning, remaining gaseous mixture and the gaseous mixture of catalysis burning zone outlets at different levels are exchanged heat, to control catalysis at different levels to burn
The temperature of section, finally gives purified gas.
2. catalysis burning purification technique according to claim 1, it is characterised in that flowed along with a part of gaseous mixture
The opposite direction in direction, gaseous mixture of the remaining gaseous mixture successively with catalysis burning zone outlets at different levels are exchanged heat, and finally
Mixed with a part of gaseous mixture.
3. catalysis burning purification technique according to claim 1, it is characterised in that if the remaining gaseous mixture is divided into cadre
Point, the gaseous mixture per part individually with every grade of catalysis burning zone outlet is exchanged heat, each several part after heat exchange and the part
Gaseous mixture mixes.
4. catalysis burning purification technique according to claim 1, it is characterised in that if the remaining gaseous mixture is divided into cadre
Point, exported successively with every grade of catalysis burning zone along the opposite direction with a part of gaseous mixture flow direction at least partially
Gaseous mixture is exchanged heat, and gaseous mixture of the remaining each several part individually with every grade of catalysis burning zone outlet is exchanged heat, the institute after heat exchange
Remaining gaseous mixture is stated to mix with a part of gaseous mixture.
5. the catalysis burning purification technique according to any one of claim 1-4, it is characterised in that the catalysis burning zone
Inside be filled with catalyst for catalytic combustion, the reaction efficiency of the catalysis burning according to the loadings of the catalyst for catalytic combustion and
The amount of active component is adjusted in unit volume, ensures that the temperature rise of the catalysis burning zone is no more than 300 DEG C；
The step of also including mixing the part remaining gaseous mixture with the gaseous mixture of at least one stage catalyzing burning zone outlet.
6. catalysis burning purification technique according to claim 5, it is characterised in that the catalyst for catalytic combustion is by carrier
With the active component composition of load thereon, the load capacity of the active component is 0.04-0.15wt%；
The carrier be honeycomb metal, honeycomb-like cordierite, aluminum oxide, zirconium oxide, titanium oxide or hexa-aluminate at least
It is a kind of；
The active component is at least one of noble metal, transition metal oxide or Ca-Ti ore type inorganic matter.
7. the catalysis burning purification technique according to any one of claim 1-6, the import temperature of a part of gaseous mixture
Spend for 200-450 DEG C；
The organic exhaust gas is that the concentration discharged in industrial processes is 300~15000mg/m3Organic exhaust gas, oil field or coal
The methane concentration discharged in layer recovery process is 500-70000mg/m3Methane gas, both mixture and wherein combustible is total
Concentration is no more than 100000mg/m3；
The volume space velocity of the gaseous mixture is 5000-200000h-1。
8. one kind catalysis combustion purification device, including housing, along the axial direction of the housing, urged if being arranged at intervals dried layer successively
Change combustion reaction bed, it is characterised in that also include,
Mixing arrangement, for by organic exhaust gas and air and/or oxygen mix, obtaining gaseous mixture, and adjust mixing between the two
Ratio, to regulate and control subsequent catalyst ignition temperature, ensure that organic exhaust gas concentration is outside explosion limit in the gaseous mixture；
Heater, connected with the mixing arrangement and the catalyst combustion reaction bed, reach it to heat the gaseous mixture
To the initial reaction temperature entered needed for the catalyst combustion reaction bed；
Heat-exchanger rig, it is respectively arranged between adjacent catalyst combustion reaction bed, the air inlet of the heat-exchanger rig mixes dress with described
Connection is put, the gaseous mixture for the gaseous mixture in the mixing arrangement to be exported with catalyst combustion reaction bed is exchanged heat.
9. catalysis combustion purification device according to claim 8, it is characterised in that connect each other between the adjacent heat-exchanger rig
It is logical, the heat-transfer surface of variable heat exchange area is provided with the heat-exchanger rig；
The gas outlet of the heat-exchanger rig connects with the heater；
Outlet side of the gas outlet of the mixing arrangement also with the catalyst combustion reaction bed connects, so as to by the gaseous mixture with
The gaseous mixture mixing of the outlet side of the catalyst combustion reaction bed.
10. catalysis combustion purification device according to claim 8 or claim 9, in addition to,
Main control unit, including display, logical editting control machine, frequency-variable controller, temperature controller, flow controller, concentration
Controller, pressure controller and relay；
Air and/or oxygen conveying fan, are connected with the frequency-variable controller, to control the air entered in the mixing arrangement
And/or the conveying capacity of oxygen；
Temperature sensor, air inlet and the gas outlet of catalyst combustion reaction beds at different levels are arranged at, and connected with the temperature controller
Connect, to monitor the air inlet and air outlet temperature of catalyst combustion reaction beds at different levels in real time；
Flow sensor, it is respectively arranged between air and/or the oxygen conveying fan and the mixing arrangement, described mixes
Between the organic exhaust gas entrance of device, the mixing arrangement and the heater, and it is connected with the flow controller；
Concentration sensor, it is respectively arranged at organic exhaust gas entrance, the mixing arrangement and the heating of the mixing arrangement
Between device, and it is connected with the consistency controller；
Pressure sensor, air inlet and the gas outlet of catalyst combustion reaction beds at different levels are arranged at, and connected with the pressure controller
Connect, to monitor the air inlet of catalyst combustion reaction beds at different levels and gas outlet pressure in real time；
Flow control valve, be respectively arranged at the air inlet of the mixing arrangement, between the mixing arrangement and the heat-exchanger rig,
Between the mixing arrangement and the heater, and it is connected with the relay.
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