CN109893994A - Handle the accumulation of heat regenerative catalytic oxidizer of VOCs exhaust gas - Google Patents
Handle the accumulation of heat regenerative catalytic oxidizer of VOCs exhaust gas Download PDFInfo
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Abstract
A kind of accumulation of heat regenerative catalytic oxidizer handling VOCs exhaust gas, wherein, contain two or more catalytic thermal storage rooms, one high-temperature oxydation reaction chamber and overtemperature logic controller, the porous regenerator bed for thering is porous material to be piled into its catalytic thermal storage room, there is a porous catalyst bed above the porous regenerator bed, high-temperature oxydation reaction chamber is located above catalytic thermal storage room and in conjunction with catalytic thermal storage room, there is partially porous material big using porosity in the porous regenerator bed, the low material of thermal capacity constitutes the cold bypass express passway of gas inside heat storage tank, and the flow control valve controlled by overtemperature logic controller is equipped in the cold bypass express passway bottom of gas.When VOC exhaust gas concentration is more than that limit value causes temperature to increase, flow control valve is controlled using overtemperature logic controller, leader VOC exhaust gas enters high-temperature oxydation reaction chamber via the cold bypass express passway of gas, the operation temperature of control high-temperature oxydation reaction chamber is adjusted, it is unexpected that overtemperature occurs to avoid system.
Description
Technical field
The main object of the present invention is for a kind of accumulation of heat regenerative catalytic oxidizer for handling VOC exhaust gas
(Regenerative Catalytic Oxidizer, RCO), it is characterized in that it is quickly logical to be equipped with cold bypass in catalytic thermal storage room
Road and flow control valve maintain part VOCs exhaust gas via high-temperature oxydation reaction chamber overtemperature logic controller
Lower temperature is directly entered high-temperature oxydation reaction chamber, can thoroughly solve accumulation of heat regenerative catalytic oxidizer (RCO) in VOC exhaust gas
When concentration transfinites, recurrent high-temperature oxydation reaction chamber overtemperature and the problem of fire.
Background technique
Volatile organic compounds (Volatile Organic Compounds, VOCs) is the pollution of industry common air
One of object, main source are chemical plant, petrochemical industry, rubber industry, Plastics Industry, press, coating industry, adhesive tape industry, circuit board
Industry and high-tech semiconductor integrated circuit emerging in recent years manufacture and electro-optical liquid crystal display industry.Since VOCs has poison
Property and it is easily destroyed atmospheric ozone layer, so must be controlled to avoid earth environment is endangered.It is existing developed and business
The VOCs of change pollute anti-control equipment technology include incinerate, absorption, absorb, the methods of condensation, can be basically divided into it is destructive and
Two methods of non-destructive.Disruptive method includes that incineration, high-temperature oxydation and catalyst aoxidize, and VOCs is translated under this mechanism
CO2And the lesser substance of the pollutions such as water or other inertia；And non-destructive method is then to utilize the objects such as absorption, absorption and condensation
Reason method will be shifted with physical method in VOCs self-discharging exhaust gas, become clean gas.
Commercial technologies at present, it is however generally that, low concentration is vented (< 10-20mg/m3) it is most of with active carbon adsorption at
Reason, middle low concentration gas (50-1000mg/m3) incinerate method using Adsorption Concentration/desorption and handle, middle concentration waste gas (500-5,
000mg/m3) handled using heat accumulating type oxidizing process (RTO) processing or regenerative catalyzed oxidation (RCO), high-concentration waste gas (> 5,000-
10,000mg/m3) (DFTO), high temperature pulse wave reactor combination RTO (PDR-RTO), condensing recovery processing are then incinerated with flame.
If containing middle low concentration sulphur or nitrogen component foul smell, can be handled with chemical washing method.However, in above-mentioned each common processing method
There are its advantage and disadvantage and applicable occasion, particularly with the higher situation of VOCs concentration, current commercialized processing method, in addition to
Other than PDR-RTO, in face of processing operation is at high cost, is easy to produce explosion or the puzzlement of fire risk.
Regeneration regenerative catalyzed oxidation method (RCO) be at the top of energy storage bed fill one layer of porosity catalysis material and one layer it is porous
Property protection materials control high-temperature oxydation reaction chamber operating temp between 300~450 DEG C using the low-temperature oxidation characteristic of catalyst
Most suitable catalytic reaction temperature, VOC exhaust fume catalytic reaction condition is provided, reach destroy efficiency requirement.But due to catalyst pair
In temperature sensibility with higher, the control of high-temperature oxydation reaction chamber temperature reforms into particularly important parameter.
Typical accumulation of heat regenerative catalytic oxidizer (RCO) is as shown in Figure 1.Accumulation of heat regenerative catalytic oxidizer 1 at least wraps
Include two catalytic thermal storage rooms (including: the first catalytic thermal storage room 10, the second catalytic thermal storage room 20), air inlet control equipment (includes: the
One catalytic thermal storage room air inlet valve 110, the second catalytic thermal storage room air inlet valve 112), outlet control equipment (include: the first catalytic thermal storage
Room exhaust valve 130, the second catalytic thermal storage room exhaust valve 132), heating equipment (include: combustor 60, auxiliary fuel supply line
201, auxiliary fuel flow control valve 202, air flow rate adjustment valve 212) and Temperature-controlled appliance (include: combustion completion control
Device 300, temperature sensing conveyer 301), filled stone matter or ceramic heat-storing material (include: the first catalytic thermal storage room in energy storage bed
Porous regenerator bed 12 and the porous regenerator bed 22 of the second catalytic thermal storage room) and porous catalyst bed (include: the first catalytic thermal storage room
Porous catalyst bed 13 and the second catalytic thermal storage room porous catalyst bed 23).
When accumulation of heat regenerative catalytic oxidizer 1 starts, three-dimensional by-passing valve 102, the property of will volatilize organic chemistry exhaust gas are first closed
100 are oriented to volatile organic chemical exhaust gas bypass discharge outlet 150 through volatile organic chemical exhaust gas bypass pipeline 103；It opens empty
Air 210 in air line 211 is sent into accumulation of heat regenerative through catalytic thermal storage room gas feeding pipe 108 and is catalyzed oxygen by air valve 106
Change device 1；Then start combustor 60, using 301 signal of temperature sensing conveyer, adjusted and controlled by combustion completion controller 300
Air flow rate adjustment valve 212 and auxiliary fuel flow control valve 202 send auxiliary fuel 200 through auxiliary fuel supply line 201
To combustor 30；High-temperature oxydation reaction chamber 50 is first warming up to operation temperature Tc, then restarts three-dimensional by-passing valve 102, will be waved
100 import system of hair property organic chemistry exhaust gas.The volatile organic chemical exhaust gas 100 to be handled is through volatile organic chemical exhaust gas
Gas feeding pipe 101 is controlled by three-dimensional by-passing valve 102, under normal operation, after flame retardant device 104 makees suitable protecting,
Through catalytic thermal storage room gas feeding pipe 108；It first turns on the first catalytic thermal storage room air inlet valve 110, close the first catalytic thermal storage room row
Air valve 130, and close the second catalytic thermal storage room air inlet valve 112, open the second catalytic thermal storage room exhaust valve 132, by VOCs exhaust gas
The first catalytic thermal storage room 10 is imported through the first catalytic thermal storage room gas feeding pipe 111, gas initially enters the first catalytic thermal storage room
Air inlet chamber 11 passed through first and urged after uniformly the porous regenerator bed 12 of the first catalytic thermal storage room of feeding is preheated to certain temperature
The porous catalyst bed 13 for changing regenerative chamber carries out partial oxidation, then adjusts using high-temperature oxydation room 50 to most suitable catalysis and reacts temperature
Degree, then, is then sent through the second catalytic thermal storage room 20, and the porous catalyst bed 23 through the second catalytic thermal storage room carries out high-temperature S removal
Reaction, the VOCs in exhaust gas containing VOCs is thoroughly destroyed；Thereafter, high-temperature gas passes through the porous regenerator of the second catalytic thermal storage room
The sensible heat of high-temperature gas is stored in the 22 accumulation of heat material of porous regenerator bed of former the second catalytic thermal storage room cooled down by bed 22；Through heat
Gas after exchange, then after the air inlet chamber 21 of the second catalytic thermal storage room mixes, with lower temperature through the second catalytic thermal storage room
Exhaust pipe 133 flows to exhaust pipe 144 from the second catalytic thermal storage room exhaust valve 132, ejectment blower 145 is lured to be drawn, row's warp
Tail gas exhausting pipe road 147 flows to the discharge of exhaust chimney 80.To which after a certain period of time, switch valve is intended to the volatile organic of processing
It learns exhaust gas 100 and imports the second catalytic thermal storage of the high breeding ground room 20 for having stored energy and preheat, high-temperature gas energy is then after reaction
It is stored in the first catalytic thermal storage room 10, completes an operation circulation.This operational method is to close the first catalytic thermal storage room air inlet valve
110, the first catalytic thermal storage room exhaust valve 130 is opened, and opens the second catalytic thermal storage room air inlet valve 112, close the second catalysis storage
VOCs exhaust gas is imported the second catalytic thermal storage room 20, gas through the second catalytic thermal storage room gas feeding pipe 113 by hot cell exhaust valve 132
The air inlet chamber 21 of the second catalytic thermal storage room is initially entered, the porous regenerator bed 22 for being uniformly sent into the second catalytic thermal storage room is preheated to one
After determining temperature, the porous catalyst bed 23 for passing through the second catalytic thermal storage room carries out partial oxidation, then using high-temperature oxydation
Room 50 adjusts to most suitable catalytic reaction temperature and is then then sent through the first catalytic thermal storage room 10, through the porous of the first catalytic thermal storage room
Catalyst bed 13 carries out high-temperature S removal reaction, and the VOCs in exhaust gas containing VOCs is thoroughly destroyed；Thereafter, high-temperature gas passes through
The sensible heat of high-temperature gas is stored in former the first catalytic thermal storage room cooled down by the porous regenerator bed 12 of the first catalytic thermal storage room
In 12 accumulation of heat material of porous regenerator bed；Gas after heat exchange, then through the first catalytic thermal storage room air inlet chamber 11 mix after, with compared with
Low temperature flows to exhaust pipe 144 through the first catalytic thermal storage chamber gas outlet road 131, from the first catalytic thermal storage room exhaust valve 130,
Ejectment blower 145 is lured to be drawn, row flows to exhaust chimney 80 through tail gas exhausting pipe road 147 and discharges.Although RTO and RCO are extensively
Apply on various fields, but Utility routine be it is unexpected keep pouring in, overtemperature, be tempered, fire etc. it is unexpected, frequent occurrence.It chases after
To find out its cause, being often as front-end process disturbance, the quick change of VOC exhaust gas concentration and flow is caused, so that RTO and RCO
High-temperature oxydation reaction chamber temperature it is out of control caused by.For example, 100 concentration of volatile organic chemical exhaust gas to be handled such as is more than original
Design concentration, when volatile organic chemical exhaust gas 100 is through volatile organic chemical exhaust gas gas feeding pipe 101, by three-dimensional by-passing valve
102 controls, after flame retardant device 104 makees suitable protecting, through catalytic thermal storage room gas feeding pipe 108；It is urged via the first of unlatching
Change regenerative chamber air inlet valve 110 and import the first catalytic thermal storage room 10, porous regenerator bed 12 of the gas in the first catalytic thermal storage room preheats
To certain temperature, the porous catalyst bed 13 for passing through the first catalytic thermal storage room carries out partial oxidation, is then sent to high temperature oxygen
Change room 50, at this point, gas reaches the second catalytic thermal storage room 20 through the second catalytic thermal storage since VOCs exhaust gas concentration is higher than design value
After the porous catalyst bed 23 of room carries out high-temperature S removal reaction, in addition to thoroughly destroying the VOCs contained in VOCs exhaust gas, also together
When release the energy for being higher than former design value；Thereafter, the porous regenerator bed 22 that high-temperature gas passes through the second catalytic thermal storage room will
It is stored when the sensible heat of high-temperature gas is stored in the 22 accumulation of heat material of porous regenerator bed of former the second catalytic thermal storage room cooled down
Energy will be above former design value.To which after a certain period of time, switch valve, the volatile organic chemical exhaust gas 100 for being intended to processing imports
The second catalytic thermal storage of the high breeding ground room 20 for having stored energy preheats, and high-temperature gas energy is then stored in the first catalysis after reaction
Regenerative chamber 10 completes an operation circulation.VOCs exhaust gas imports the second catalytic thermal storage room 20 at this time, and gas is in the second catalytic thermal storage room
22 heat exchange of porous regenerator bed can obtain the energy for being higher than former design value, passed through the porous catalyst of the second catalytic thermal storage room
Bed 23 carries out partial oxidation, and generates the energy for being higher than setting value, so that the temperature of high-temperature oxydation room 50 edges up, then, gas
It is then sent through the first catalytic thermal storage room 10, the porous catalyst bed 13 through the first catalytic thermal storage room carries out high-temperature S removal reaction, then
Release the energy for being more than design value；Thereafter, high-temperature gas passes through the first catalytic thermal storage room 10 for more energy storages
In the 12 accumulation of heat material of porous regenerator bed of one catalytic thermal storage room；In this way, accumulation of heat regenerative is catalyzed oxygen after VOCs exhaust gas concentration increases
The operation temperature for changing device 1 will be increased persistently, be even resulted in out of control.
In order to which the temperature moment overtemperature of high-temperature oxydation room when solving the problem of that VOC exhaust gas concentration increases causes system to jump vehicle,
United States Patent (USP) US5837205 is arranged in high-temperature oxydation reaction chamber 50 is open to the urgent bypass of atmosphere, when system once has generation
When the possibility of overtemperature situation, urgent bypass opening is just automatically turned on, by high-temperature gas direct emission, this technology is referred to as " heat
Bypass techniques "；This technology gives no thought to the industrial safety issues that may occur and pollution merely for equipment safety consideration
Object emission problem.This " hot bypass techniques ", in industrial circle practical application, production safety problem is continuous.When system operatio is super
Wen Shi, the high-temperature gas for opening heat bypass moment discharge can often ignite VOCs exhaust gas, cause serious production safety unexpected, explosion
There is what is heard when event.
Taiwan patent of invention I 504844 and I 448657, Chinese invention patent ZL 2,012 1 0143533.6 and ZL
2012 1 0549700.5 are the exhaust gas containing VOCs for being higher than LEL or more for concentration, using being mounted on high-temperature oxydation reaction chamber
50 high temperature pulse wave reactor (PDR) is handled, and recycles the energy using heat recovery boiler, and safe solves concentration
The processing of VOC exhaust gas higher than LEL or more.Also higher for concentration but to be below LEL hereinafter, and dense that is, according to the above analysis
Degree and flow can lead to the problem of the processing of the fast-changing exhaust gas containing VOCs, and industrial circle still can be with without safe and reliable method so far
It solves.The accumulation of heat regenerative catalytic oxidation system (RCO) of industry is caused to be easy to produce the application of variation in concentration, still often
Meet with overtemperature predicament out of control.
The high-efficient energy recovery of accumulation of heat regenerative catalytic oxidation system (RCO) is its advantage, but due to petrochemical industry, chemical industry etc.
The exhaust gas containing VOCs of industry typically, it is characterized in that concentration quickly changes, flow quickly changes；It is regenerated using traditional accumulation of heat
Overtemperature puzzlement out of control often occurs for formula catalytic oxidation system (RCO), even generate the accident that overtemperature fires.If VOCs concentration
Higher, accumulation of heat regenerative catalytic oxidation system (RCO) can not be effectively discharged in excess energy, and it is anti-effectively to control high-temperature oxydation
The operation temperature of room is answered, RCO has temperature control that catalyst is made to destroy or generate the risk fired by fire.In recent years, it sends out in the world
The raw cases more accumulation of heat regenerative catalytic oxidation systems (RCO) explosion or destroyed by fire, mainly i.e. inducement will be in will accidentally contain high concentration
VOCs exhaust gas imports accumulation of heat regenerative catalytic oxidation system (RCO), and when air supply is adjusted improperly, generation is fired
(Deflagration) or detonation (Detonation) phenomenon or overtemperature operation cause catalyst to be damaged.Therefore, existing storage is improved
Hot recycling formula catalytic oxidation system technology, create one can effectively control VOCs burn released energy method and
Equipment is an object of the present invention.
Summary of the invention
The main object of the present invention is to provide for a kind of accumulation of heat regenerative catalytic oxidation system that can handle VOCs exhaust gas,
It is characterized in that the cold bypass express passway in catalytic thermal storage room and valve are equipped in catalytic thermal storage room, it is super via high-temperature oxydation reaction chamber
Warm logic controller controls air flow rate adjustment valve aperture, allows part VOCs exhaust gas via the lower catalysis of heat exchange efficiency
The cold bypass express passway of regenerative chamber, enters high-temperature oxydation reaction chamber with lower temperature, to inhibit because the variation of VOCs concentration is made
At problem of temperature rise, maintain high-temperature oxydation reaction chamber to can control in reasonable temperature range, maintain catalyst activity, thoroughly solve
The certainly high-temperature oxydation reaction chamber overtemperatute that accumulation of heat regenerative catalytic oxidizer (RCO) VOC exhaust gas concentration transfinites.
The solution of this overtemperatute is analyzed, it can be from traditional accumulation of heat regenerative catalytic oxidation system of Fig. 1
(RCO) feature, Lai Sikao solution.The heat recovery rate of accumulation of heat regenerative catalytic oxidation system, is commonly defined as:
R=(Tc-To)/(Tc-Ti) x 100% (1)
Wherein TcFor maximum gas temperature or operation in the high-temperature oxydation reaction chamber 50 of accumulation of heat regenerative high-temperature oxydation system
Temperature (i.e. highest oxidation temperature), ToFor accumulation of heat regenerative high-temperature oxydation system (i.e. regenerative oxidizer) exhaust
144 outlet temperature of pipeline, TiFor the volatile organic chemical exhaust gas 100 to be handled entering in catalytic thermal storage room gas feeding pipe 108
Mouth temperature.If if Tc、To、TiRespectively 400 DEG C, 85 DEG C, 50 DEG C, then
R=(400-85)/(400-50) x 100%=90%
The meaning as representated by upper calculated example be the energy recovery efficiency of accumulation of heat regenerative catalytic oxidizer (RCO) itself such as
Fruit is designed as 90%, it is only necessary to provide energy and the temperature of the exhaust gas containing volatile organic chemical to be handled 100 is enabled to improve 35 DEG C
(To-Ti=85-50=35 DEG C) VOCs in gas can be aoxidized.In general, with accumulation of heat regenerative catalytic oxidation system
(RCO) concentration for handling exhaust gas containing volatile organic chemical 100 is greater than 1,500mg/m3Useless exhaust (be equivalent to general VOC about
500ppmv), other than combustor 60 needs auxiliary fuel when starting；When normal operating, volatile organic chemical exhaust gas 100
Interior volatile organic ingredient oxidation, provided heat are just sufficient for energy required for RCO system stable operation, normally
Operation is i.e. without using auxiliary fuel or electric heating.The advantages of this is RCO, still, and composition RCO makes in petrochemical industry, chemical industry
Used time, the significant drawback of difficulties in operation；Since the catalyst of RCO is more sensitive to temperature, if VOCs exhaust gas is dense
Moment raising is spent, then 50 temperature of high-temperature oxydation reaction chamber of RCO will rise sharply；If it is design value or more that the concentration of VOCs exhaust gas, which increases,
And continue for some time, then 50 temperature of high-temperature oxydation reaction chamber of RCO by persistently overheating, even result in it is out of control.
For example, it is assumed that the design equilibrium concentration of accumulation of heat regenerative catalytic oxidizer 1 is Co, that is, work as the concentration of VOCs exhaust gas
When for Co, accumulation of heat regenerative catalytic oxidizer 1 can be not necessarily to auxiliary fuel in temperature Tc with stable operation.Work as volatile organic chemical
When the concentration of exhaust gas 100 is lower than Co, high-temperature oxydation reaction chamber 50 needs to add fuel via combustor 60, could maintain operation temperature
Degree.When the concentration of volatile organic chemical exhaust gas 100 is higher than Co, the operation temperature of high-temperature oxydation reaction chamber 50 will be cumulative.
Using design of the invention, allow part volatile organic chemical exhaust gas via cold bypass express passway (such as: the first catalytic thermal storage
The cold bypass express passway 127 of the cold bypass express passway 125 in room or the second catalytic thermal storage room) high-temperature oxydation reaction chamber 50 is flowed into, it is false
If the gas flow accounts for the α times of volume ratio (α < 1) of the total flow of volatile organic chemical exhaust gas 100, and cold bypass is quickly logical
Road using the accumulation of heat material that regenerative capacity is low or specific heat is low so that through supercooling bypass express passway gas energy recycling ratio be
β times (β < 1) of normal energy storage bed, that is, the gas heating Δ T through supercooling bypass express passwaysFor by normal energy storage bed
Gas heating is Δ Tiβ times (β < 1), that is, Δ Ts=β Δ Ti；Then it is fast to flow through cold bypass for volatile organic chemical exhaust gas 100
The operation of the ratio α in fast channel and the ratio C/Co, high-temperature oxydation reaction chamber 50 of gas concentration containing VOCs and balanced design concentration
The temperature Tc and gas heating Δ T for passing through normal energy storage bediRatio and energy regenerating ratio beta relationship, can indicate are as follows:
For example, if Tc, To, Ti for setting accumulation of heat regenerative catalytic oxidizer (RCO) are respectively 400 DEG C, 85 DEG C, 50 DEG C, sheet
The energy recovery efficiency of body according to equation (1) be R=(Tc-To)/(Tc-Ti) × 100%=(400-85)/(400-50) ×
100%=90%.Assuming that the design of cold bypass express passway is so that energy recovery efficiency only has 20%, then β=20%/90%=
2/9；ΔTi=85-50=35 DEG C；Assume the concentration preliminary design of volatile organic chemical exhaust gas 100 at can at most allow again
Increase 100%, C/C0=2；When the cold bypass express passway of design then can be estimated according to equation (2), the gas flow of consideration
Ratio, α is as follows:
As long as also that is, preparing the cold bypass express passway of 12.33% flow, so that it may the behaviour of effective adjustment control system
Make, allow the operation temperature of high-temperature oxydation reaction chamber 50 in the variation of VOCs exhaust gas concentration, remains to effectively control steady
Fixed setting operation temperature.Therefore, the design side of the cold bypass express passway of VOCs exhaust gas is added inside regenerative chamber using this
Case can allow accumulation of heat regenerative catalytic oxidizer to change in face of the concentration of VOCs exhaust gas, be controlled effectively, further increase
The operational safety of accumulation of heat regenerative catalytic oxidizer.
Detailed description of the invention
To make to have the present invention preferable understanding, it is special with regard to for following schemes as a preferred embodiment explanation of the invention
It is as follows.
Fig. 1: traditional accumulation of heat regenerative catalytic oxidation system；
Fig. 2: the embodiment of two slot type accumulation of heat regenerative catalytic oxidation systems of the invention；
Fig. 3: the embodiment of three slot type accumulation of heat regenerative catalytic oxidation systems of the invention；
Fig. 4: the flow area ratio (α) of express passway and the relationship of concentration changing ratio (C/Co)；
Fig. 5: the flow area ratio (α) of express passway and the relationship of concentration changing ratio (C/Co).
Appended drawing reference is as follows:
1 accumulation of heat regenerative catalytic oxidizer
10 first catalytic thermal storage rooms
The air inlet chamber of 11 first catalytic thermal storage rooms
The porous regenerator bed of 12 first catalytic thermal storage rooms
The porous catalyst bed of 13 first catalytic thermal storage rooms
20 second catalytic thermal storage rooms
The air inlet chamber of 21 second catalytic thermal storage rooms
The porous regenerator bed of 22 second catalytic thermal storage rooms
The porous catalyst bed of 23 second catalytic thermal storage rooms
30 third catalytic thermal storage rooms
The air inlet chamber of 31 third catalytic thermal storage rooms
The porous regenerator bed of 32 third catalytic thermal storage rooms
The porous catalyst bed of 33 third catalytic thermal storage rooms
50 high-temperature oxydation reaction chambers
60 combustors
70 combustors
80 exhaust chimneys
100 volatile organic chemical exhaust gas
101 volatile organic chemical exhaust gas gas feeding pipes
102 three-dimensional by-passing valves
103 volatile organic chemical exhaust gas bypass pipelines
104 flame retardant devices
106 air valves
107 bypath air pipelines
108 catalytic thermal storage room gas feeding pipes
110 first catalytic thermal storage room air inlet valves
111 first catalytic thermal storage room gas feeding pipes
112 second catalytic thermal storage room air inlet valves
113 second catalytic thermal storage room gas feeding pipes
114 third catalytic thermal storage room air inlet valves
115 third catalytic thermal storage room gas feeding pipes
The cold bypass express passway flow control valve in 124 first catalytic thermal storage rooms
The cold bypass express passway in 125 first catalytic thermal storage rooms
The cold bypass express passway flow control valve in 126 second catalytic thermal storage rooms
The cold bypass express passway in 127 second catalytic thermal storage rooms
The cold bypass express passway flow control valve in 128 third catalytic thermal storage rooms
The 129 cold bypass express passways in third catalytic thermal storage room
130 first catalytic thermal storage room exhaust valves
131 first catalytic thermal storage chamber gas outlet roads
132 second catalytic thermal storage room exhaust valves
133 second catalytic thermal storage chamber gas outlet roads
134 third catalytic thermal storage room exhaust valves
135 third catalytic thermal storage chamber gas outlet roads
144 exhaust pipes
145 lure ejectment blower
147 tail gas exhausting pipe roads
150 volatile organic chemical exhaust gas bypass discharge outlets
160 first catalytic thermal storage room backwash valves
161 first catalytic thermal storage room backwash pipelines
162 second catalytic thermal storage room backwash valves
163 second catalytic thermal storage room backwash pipelines
164 third catalytic thermal storage room backwash valves
165 third catalytic thermal storage room backwash pipelines
166 backwash windmills
167 backwash pipelines
200 auxiliary fuels
201 auxiliary fuel supply lines
202 auxiliary fuel flow control valves
210 air
211 air lines
212 air flow rate adjustment valves
300 combustion completion controllers
301 temperature sensing conveyers
320 high-temperature oxydation reaction chamber overtemperature logic controllers
321 high-temperature oxydation reaction chamber overheat controllers
Specific embodiment
For up to above-mentioned effect, the present invention provides a kind of accumulation of heat regenerative catalytic oxidizer 1 that can handle VOC exhaust gas,
In, contain at least two or more catalytic thermal storage rooms, a high-temperature oxydation reaction chamber and high-temperature oxydation reaction chamber overtemperature logic control
Device processed, the porous regenerator bed for wherein thering is porous material to be piled into catalytic thermal storage room, have above the porous regenerator bed it is one porous
Catalyst bed, high-temperature oxydation reaction chamber are located above catalytic thermal storage room and in conjunction with catalytic thermal storage room, and in the porous regenerator bed
There is partially porous material to constitute the cold bypass express passway of catalytic thermal storage chamber interior using the material that porosity is big, thermal capacity is low,
And the flow control valve and high-temperature oxydation reaction chamber overtemperature of temperature automatic control are equipped in the cold bypass express passway in catalytic thermal storage room
Logic controller；Waste gas containing VOC is imported into accumulation of heat regenerative catalytic oxidizer, via preheating, high-temperature S removal processing；?
When VOC exhaust gas concentration is more than limit value, stored by high-temperature oxydation reaction chamber overtemperature logic controller using the catalysis of temperature automatic control
The cold bypass express passway flow control valve leader VOC exhaust gas in hot cell via the cold bypass express passway in catalytic thermal storage room, with compared with
Low heat recovery efficiency maintains to enter high-temperature oxydation reaction chamber compared with low-temperature condition, adjusts the operation of control high-temperature oxydation reaction chamber
It is unexpected to avoid system overtemperature to occur for temperature.
As one embodiment of the invention, please refer to shown in Fig. 2.One embodiment of the invention includes: one
Accumulation of heat regenerative catalytic oxidizer 1 (RCO), inside includes at least two catalytic thermal storage rooms, and (the first catalytic thermal storage room 10, second are urged
Change regenerative chamber 20), (the first catalytic thermal storage room is cold in the cold bypass express passway in the catalytic thermal storage room of catalytic thermal storage chamber interior for dibit
Bypass express passway 125, the cold bypass express passway 127 in the second catalytic thermal storage room), two groups of air inlets control equipment (the first catalysis storage
Hot cell air inlet valve 110, the second catalytic thermal storage room air inlet valve 112), two groups of outlets control equipment (the first catalytic thermal storage room exhaust valves
130, the second catalytic thermal storage room exhaust valve 132), at least one set of heating equipment it is (combustor 60, auxiliary fuel supply line 201, auxiliary
Help fuel flow control valve 202, air flow rate adjustment valve 212) and high-temperature oxydation reaction chamber 50 Temperature-controlled appliance (burning peace
Full controller 300, temperature sensing conveyer 301), filled stone matter or ceramic heat-storing material in the porous regenerator bed of catalytic thermal storage room
And catalyst.When accumulation of heat regenerative catalytic oxidizer 1 starts, three-dimensional by-passing valve 102, the property of will volatilize organic chemistry exhaust gas are first closed
100 are oriented to volatile organic chemical exhaust gas bypass discharge outlet 150 through volatile organic chemical exhaust gas bypass pipeline 103；It opens empty
Air 210 in air line 211 is sent into accumulation of heat regenerative through catalytic thermal storage room gas feeding pipe 108 and is catalyzed oxygen by air valve 106
Change device 1, start combustor 60, using 301 signal of temperature sensing conveyer, control air is adjusted by combustion completion controller 300
Flow control valve 212 and auxiliary fuel flow control valve 202 send auxiliary fuel 200 to combustion through auxiliary fuel supply line 201
Burning machine 30 carries out heating by ignition；High-temperature oxydation reaction chamber 50 is first warming up to operation temperature (Tc).Restart three-dimensional by-passing valve
102,100 import system of the property of will volatilize organic chemistry exhaust gas.The volatile organic chemical exhaust gas 100 to be handled is organic through volatility
Chemical exhaust gas feeding pipe 101 is controlled by three-dimensional by-passing valve 102, under normal operation, is fitted through flame retardant device 104
After protection, through catalytic thermal storage room gas feeding pipe 108；It first turns on the first catalytic thermal storage room air inlet valve 110, close the first catalysis
Regenerative chamber exhaust valve 130, and close the second catalytic thermal storage room air inlet valve 112, open the second catalytic thermal storage room exhaust valve 132, it will
VOCs exhaust gas imports the first catalytic thermal storage room 10 through the first catalytic thermal storage room gas feeding pipe 111, and gas initially enters the first catalysis
The air inlet chamber 11 of regenerative chamber passes through after uniformly the porous regenerator bed 12 of the first catalytic thermal storage room of feeding is preheated to certain temperature
The porous catalyst bed 13 for crossing the first catalytic thermal storage room carries out partial oxidation, then adjusts using high-temperature oxydation room 50 to most suitable and urges
Change reaction temperature and be then then sent through the second catalytic thermal storage room 20, the porous catalyst bed 23 through the second catalytic thermal storage room carries out high temperature
Catalytic oxidation thoroughly destroys the VOCs in exhaust gas containing VOCs；Thereafter, high-temperature gas passes through the second catalytic thermal storage room
The sensible heat of high-temperature gas is stored in 22 accumulation of heat of porous regenerator bed of former the second catalytic thermal storage room cooled down by porous regenerator bed 22
In material；Gas after heat exchange, then after the air inlet chamber 21 of the second catalytic thermal storage room mixes, urged with lower temperature through second
Change regenerative chamber exhaust pipe 133, flows to exhaust pipe 144 from the second catalytic thermal storage room exhaust valve 132, lured ejectment blower 145
It is drawn, row flows to exhaust chimney 80 through tail gas exhausting pipe road 147 and discharges.During this, it is assumed for example that accumulation of heat regenerative is catalyzed oxygen
The design equilibrium concentration for changing device 1 is Co=1500ppm, that is, when the concentration of VOCs exhaust gas is Co=1500ppm, accumulation of heat regeneration
Type catalytic oxidizer 1 can be not necessarily to auxiliary fuel at Tc=400 DEG C of temperature with stable operation.When volatile organic chemical exhaust gas 100
Concentration when being 500~1500ppm (be lower than Co=1500ppm), high-temperature oxydation reaction chamber 50 needs to add via combustor 60
Fuel could maintain operation temperature.Such as (it is higher than Co=when the concentration of volatile organic chemical exhaust gas 100 reaches 3000ppm
When 1500ppm), the operation temperature of high-temperature oxydation reaction chamber 50 will be more than because of the concentration of volatile organic chemical exhaust gas 100
Design value, and make the increasing temperature of high-temperature oxydation reaction chamber 50.Using design of the invention, when system temperature is more than setting value
Afterwards, high-temperature oxydation reaction chamber overtemperature logic controller 320 can start the actuation unlatching cold bypass express passway in the first catalytic thermal storage room
Flow control valve 124 allows part volatile organic chemical exhaust gas to flow into via the cold bypass express passway 125 in the first catalytic thermal storage room
The volume ratio α value of high-temperature oxydation reaction chamber 50, the total flow of volatile organic chemical exhaust gas 100 can use equation (2)
It estimates.Assuming that cold bypass express passway using the accumulation of heat material that regenerative capacity is low or specific heat is low so that quickly logical through supercooling bypass
The gas energy recycling ratio in road is β times (β < 1, such as β=0.25) of normal energy storage bed, that is, quickly logical through supercooling bypass
The gas heating Δ T in roadSIt is Δ T to pass through the gas heating of normal energy storage bediβ times (β < 1), that is, Δ Ts=β Δ Ti=
0.25ΔTi；Tc, To, Ti of accumulation of heat regenerative catalytic oxidizer 1 (RCO) are respectively 400 DEG C, 85 DEG C, 50 DEG C, the energy of itself
If recovery efficiency is designed as 90%.ΔTi=85-50=35 DEG C；Then volatile organic chemical exhaust gas 100 flows through the first catalysis
The VOCs exhaust gas fraction α of the cold bypass express passway 125 of regenerative chamber can use equation (2) and estimate are as follows:
If also that is, there is the VOCs exhaust gas of 12.8% flow to flow through the cold bypass express passway 125 in the first catalytic thermal storage room,
System operating temperature can be effectively adjusted, the operation temperature of high-temperature oxydation reaction chamber 50 is changed in VOCs exhaust gas concentration
When, it remains to effectively control in former setting operation temperature.In this example, the cold bypass express passway 125 in the first catalytic thermal storage room
It provides lower heat exchange efficiency and gives VOCs exhaust gas, part VOCs exhaust gas is enabled to enter high-temperature oxydation reaction with lower temperature
Room 50 achievees the purpose that the operation temperature for adjusting control high-temperature oxydation reaction chamber 50；Since volatile organic chemical exhaust gas 100 is released
The combustion heat value put also can be via the oxidation reaction of high-temperature oxydation reaction chamber 50 and the porous catalyst bed 23 of the second catalytic thermal storage room
Excess energy is released；At this point, the high-temperature oxydation reaction chamber overtemperature logic controller of accumulation of heat regenerative catalytic oxidizer 1
320, the aperture of the cold bypass express passway 127 in the second catalytic thermal storage room of control can be also adjusted simultaneously, effectively arrange excess energy
Out.To which after a certain period of time, switch valve, the volatile organic chemical exhaust gas 100 for being intended to processing imports this and stored energy
High the second catalytic thermal storage of breeding ground room 20 preheats, and high-temperature gas energy is then stored in the first catalytic thermal storage room 10 after reaction, completes one
Operation circulation.This operational method is to close the first catalytic thermal storage room air inlet valve 110, open the first catalytic thermal storage room exhaust valve 130,
And open the second catalytic thermal storage room air inlet valve 112, close the second catalytic thermal storage room exhaust valve 132, VOCs exhaust gas is urged through second
To change regenerative chamber gas feeding pipe 113 and imports the second catalytic thermal storage room 20, gas initially enters the air inlet chamber 21 of the second catalytic thermal storage room,
After uniformly the porous regenerator bed 22 of the second catalytic thermal storage room of feeding is preheated to certain temperature, the second catalytic thermal storage room was passed through
Porous catalyst bed 23 carries out partial oxidation, then adjusts control the using high-temperature oxydation reaction chamber overtemperature logic controller 320
The cold bypass express passway 125 of the cold bypass express passway 127 in two catalytic thermal storage rooms and the first catalytic thermal storage room, effectively controls high temperature
Oxidizing chamber 50 is operated in most suitable catalytic reaction temperature, then, the first catalytic thermal storage room 10 is then sent through, through the first catalytic thermal storage room
Porous catalyst bed 13 carries out high-temperature S removal reaction, and the VOCs in exhaust gas containing VOCs is thoroughly destroyed；Thereafter, high-temperature gas is again
The sensible heat of high-temperature gas is stored in former the first catalytic thermal storage cooled down by the porous regenerator bed 12 for flowing through the first catalytic thermal storage room
In the 12 accumulation of heat material of porous regenerator bed of room；Gas after heat exchange, then after the air inlet chamber 11 of the first catalytic thermal storage room mixes,
With lower temperature through the first catalytic thermal storage chamber gas outlet road 131, exhaust pipe is flowed to from the first catalytic thermal storage room exhaust valve 130
144, lured ejectment blower 145 to be drawn, row flows to exhaust chimney 80 through tail gas exhausting pipe road 147 and discharges.
As second embodiment of the invention, please refer to shown in Fig. 3.Second embodiment of the invention includes: one
A accumulation of heat regenerative catalytic oxidizer 1 (RCO) with three slot types, inside include at least (the first catalysis of three catalytic thermal storage rooms
Regenerative chamber 10, the second catalytic thermal storage room 20, third catalytic thermal storage room 30), three groups be located at catalytic thermal storage chamber interior catalytic thermal storage
The cold bypass express passway in room (the cold bypass express passway 125 in the first catalytic thermal storage room, the cold bypass express passway in the second catalytic thermal storage room
127, the cold bypass express passway 129 in third catalytic thermal storage room), three groups of air inlets control equipment (the first catalytic thermal storage room air inlet valves
110, the second catalytic thermal storage room air inlet valve 112, third catalytic thermal storage room air inlet valve 114), (first urges three groups of outlets control equipment
Change regenerative chamber exhaust valve 130, the second catalytic thermal storage room exhaust valve 132, third catalytic thermal storage room exhaust valve 134), it is at least one set of plus
Hot equipment (combustor 60, combustor 70, auxiliary fuel supply line 201, auxiliary fuel flow control valve 202, air mass flow tune
Save valve 212) and high-temperature oxydation reaction chamber 50 Temperature-controlled appliance (combustion completion controller 300, temperature sensing conveyer
301), filled stone matter or ceramic heat-storing material and catalyst in the porous regenerator bed of catalytic thermal storage room.Three slot type accumulation of heat regeneratives
When catalytic oxidizer 1 operates, there is a catalytic thermal storage room to urge as air inlet chamber, a catalytic thermal storage room as discharge chamber, one
Change regenerative chamber as backwash room；To avoid catalytic thermal storage room switching when, caused by short time pollution condition.As urging for backwash room
Change regenerative chamber, backwash flow is about the 1/5~1/10 of normal operating flow, and the backwash time about 20 seconds or more.Three slot type accumulation of heats are again
When raw type catalytic oxidizer 1 operates, following three operative combinations can be divided into, control corresponding valve according to timing or outlet temperature
It opens and closes.(1) one into three goes out two backwashes, and (10 air inlet of the first catalytic thermal storage room, 20 backwash of the second catalytic thermal storage room, third are urged
Change 30 outlet of regenerative chamber)；(2) three into two go out a backwash (10 backwash of the first catalytic thermal storage room, 20 outlet of the second catalytic thermal storage room,
30 air inlet of third catalytic thermal storage room)；And (3) two into one go out three backwashes (10 outlet of the first catalytic thermal storage room, the second catalytic thermal storage room
20 air inlets, 30 backwash of third catalytic thermal storage room).
When the operation starting of three slot type accumulation of heat regenerative catalytic oxidizers 1, three-dimensional by-passing valve 102 is first closed, the property of will volatilize has
Chemical machine exhaust gas 100 is oriented to volatile organic chemical exhaust gas bypass discharge outlet through volatile organic chemical exhaust gas bypass pipeline 103
150；Air valve 106 is opened, by the air 210 in air line 211, is sent into accumulation of heat again through catalytic thermal storage room gas feeding pipe 108
Raw type catalytic oxidizer 1, starts combustor 60 and combustor 70, using 301 signal of temperature sensing conveyer, by combustion completion control
Device 300 processed adjusts control air flow rate adjustment valve 212 and auxiliary fuel flow control valve 202, and auxiliary fuel 200 is fired through auxiliary
Material supply line 201, which is sent to combustor 60 and combustor 70, carries out heating by ignition；High-temperature oxydation reaction chamber 50 is first warming up to behaviour
Make temperature (Tc).Restart three-dimensional by-passing valve 102,100 import system of the property of will volatilize organic chemistry exhaust gas.The volatility to be handled
Organic chemistry exhaust gas 100 is controlled, in normal operating through volatile organic chemical exhaust gas gas feeding pipe 101 by three-dimensional by-passing valve 102
In the case of, after flame retardant device 104 makees suitable protecting, through catalytic thermal storage room gas feeding pipe 108, it is sent into RCO processing.
One into three goes out two backwashes
The first catalytic thermal storage room air inlet valve 110 is first turned on, the first catalytic thermal storage room exhaust valve 130 is closed, closes first
Catalytic thermal storage room backwash valve 160 simultaneously closes off the second catalytic thermal storage room air inlet valve 112, closes the second catalytic thermal storage room exhaust valve
132, the second catalytic thermal storage room backwash valve 162 is opened, and closes third catalytic thermal storage room air inlet valve 114, open third catalysis storage
Hot cell exhaust valve 134 closes third catalytic thermal storage room backwash valve 164, by VOCs exhaust gas through the first catalytic thermal storage room gas feeding pipe
111 import the first catalytic thermal storage room 10, and gas initially enters the air inlet chamber 11 of the first catalytic thermal storage room, are uniformly sent into the first catalysis
After the porous regenerator bed 12 of regenerative chamber is preheated to certain temperature, the porous catalyst bed 13 for passing through the first catalytic thermal storage room is carried out
Then partial oxidation adjusts to most suitable catalytic reaction temperature using high-temperature oxydation room 50 and is then then sent through third catalytic thermal storage
Room 30, the porous catalyst bed 33 through third catalytic thermal storage room carries out high-temperature S removal reaction, by the VOCs in exhaust gas containing VOCs
Thoroughly destroy；Thereafter, the porous regenerator bed 32 that high-temperature gas passes through third catalytic thermal storage room stores the sensible heat of high-temperature gas
In the 32 accumulation of heat material of porous regenerator bed for the third catalytic thermal storage room that original has cooled down；Gas after heat exchange, then urged through third
After the mixing of air inlet chamber 31 for changing regenerative chamber, with lower temperature through third catalytic thermal storage chamber gas outlet road 135, it is catalyzed and stores from third
Hot cell exhaust valve 134 flows to exhaust pipe 144, and ejectment blower 145 is lured to be drawn, and row flows to exhaust cigarette through tail gas exhausting pipe road 147
Chimney 80 discharges.Meanwhile micro clean combustion product will be backwashed windmill 166 and be drawn, by 20 backwash of the second catalytic thermal storage room, gas
Body flows through backwash windmill 166 through the second catalytic thermal storage room backwash valve 162, the second catalytic thermal storage room backwash pipeline 163, then through anti-
Pipeline 167 is washed, sends catalytic thermal storage room gas feeding pipe 108 back to；After 20 backwash of the second catalytic thermal storage room cleaning, then it can be used as
The outlet catalytic thermal storage room of next circulation " three into two go out a backwash " uses.During this, it is assumed for example that accumulation of heat regenerative
The design equilibrium concentration of catalytic oxidizer 1 is Co=1500ppm, that is, when the concentration of VOCs exhaust gas is CoWhen=1500ppm, store
Heat regenerating type catalytic oxidizer 1 can be with stable operation in temperature Tc=400 DEG C are not necessarily to auxiliary fuel.When volatile organic chemical is useless
The concentration of gas 100 is that 500~1500ppm (is lower than Co=1500ppm) when, high-temperature oxydation reaction chamber 50 is needed via combustor 60
And combustor 70 adds fuel, could maintain operation temperature.Such as when the concentration of volatile organic chemical exhaust gas 100 reaches
3000ppm (is higher than Co=1500ppm) when, the operation temperature of high-temperature oxydation reaction chamber 50 will be useless because of volatile organic chemical
The concentration of gas 100 is more than design value, and makes the increasing temperature of high-temperature oxydation reaction chamber 50.Using design of the invention, when being
More than after setting value, high-temperature oxydation reaction chamber overtemperature logic controller 320 can start actuation and open the first catalytic thermal storage temperature of uniting
The cold bypass express passway flow control valve 124 in room allows part volatile organic chemical exhaust gas via the first cold side in catalytic thermal storage room
Logical express passway 125 flows into high-temperature oxydation reaction chamber 50, the volume ratio α value of the total flow of volatile organic chemical exhaust gas 100
It can use equation (2) to estimate.Assuming that it is cold bypass express passway using the accumulation of heat material that regenerative capacity is low or specific heat is low so that
Gas energy recycling ratio through supercooling bypass express passway is β times (β < 1, such as β=0.25) of normal energy storage bed, that is,
Gas heating Δ T through supercooling bypass express passwaysIt is Δ T to pass through the gas heating of normal energy storage bediβ times (β < 1), also
That is Δ Ts=β Δ Ti=0.25 Δ Ti；The T of accumulation of heat regenerative catalytic oxidizer 1 (RCO)c、To、TiRespectively 400 DEG C, 85 DEG C, 50
DEG C, if the energy recovery efficiency of itself is designed as 90%.ΔTi=85-50=35 DEG C；Then volatile organic chemical exhaust gas 100
Flow through the first catalytic thermal storage room it is cold bypass express passway 125 VOCs exhaust gas fraction α can use equation (2) estimate for
If also that is, there is the VOCs exhaust gas of 12.8% flow to flow through the cold bypass express passway 125 in the first catalytic thermal storage room,
System operating temperature can be effectively adjusted, the operation temperature of high-temperature oxydation reaction chamber 50 is changed in VOCs exhaust gas concentration
When, it remains to effectively control in former setting operation temperature.In this example, the cold bypass express passway 125 in the first catalytic thermal storage room
It provides lower heat exchange efficiency and gives VOCs exhaust gas, part VOCs exhaust gas is enabled to enter high-temperature oxydation reaction with lower temperature
Room 50 achievees the purpose that the operation temperature for adjusting control high-temperature oxydation reaction chamber 50；Since volatile organic chemical exhaust gas 100 is released
The combustion heat value put also can be via the oxidation reaction of high-temperature oxydation reaction chamber 50 and the porous catalyst bed 33 of third catalytic thermal storage room
Excess energy is released；At this point, the high-temperature oxydation reaction chamber overtemperature logic controller of accumulation of heat regenerative catalytic oxidizer 1
320, the aperture of the cold bypass express passway 129 in control third catalytic thermal storage room can be also adjusted simultaneously, effectively arrange excess energy
Out.
Three into two go out a backwash
To which after a certain period of time, switch valve, the volatile organic chemical exhaust gas 100 for being intended to processing imports this and stored energy
High breeding ground third catalytic thermal storage room 30 preheating of amount, high-temperature gas energy is then stored in the first catalytic thermal storage room 10 after reaction, complete
At the operation circulation of " three into two go out a backwash ".This operational method is to close the first catalytic thermal storage room air inlet valve 110, close first
Catalytic thermal storage room exhaust valve 130 opens the first catalytic thermal storage room backwash valve 160, and closes the second catalytic thermal storage room air inlet valve
112, it opens the second catalytic thermal storage room exhaust valve 132, close the second catalytic thermal storage room backwash valve 162, open third catalytic thermal storage
Room air inlet valve 114 closes third catalytic thermal storage room exhaust valve 134, closes third catalytic thermal storage room backwash valve 164, and VOCs is given up
Gas imports third catalytic thermal storage room 30 through third catalytic thermal storage room gas feeding pipe 115, and gas initially enters third catalytic thermal storage room
Air inlet chamber 31, uniformly be sent into third catalytic thermal storage room porous regenerator bed 32 be preheated to certain temperature after, passed through third
The porous catalyst bed 33 of catalytic thermal storage room carries out partial oxidation, then using high-temperature oxydation reaction chamber overtemperature logic controller
320 adjust the cold bypass express passway 129 in control third catalytic thermal storage rooms, the cold bypass express passway 127 in the second catalytic thermal storage room and
The cold bypass express passway 125 in first catalytic thermal storage room, the effective high-temperature oxydation room 50 that controls are operated in most suitable catalytic reaction temperature,
Then, it is then sent through the second catalytic thermal storage room 20, it is anti-that the porous catalyst bed 23 through the second catalytic thermal storage room carries out high-temperature S removal
It answers, the VOCs in exhaust gas containing VOCs is thoroughly destroyed；Thereafter, high-temperature gas passes through the porous regenerator bed of the second catalytic thermal storage room
22 are stored in the sensible heat of high-temperature gas in the 22 accumulation of heat material of porous regenerator bed of former the second catalytic thermal storage room cooled down；It is handed over through heat
Gas after changing, then after the air inlet chamber 21 of the second catalytic thermal storage room mixes, arranged with lower temperature through the second catalytic thermal storage room
Feed channel 133 flows to exhaust pipe 144 from the second catalytic thermal storage room exhaust valve 132, ejectment blower 145 is lured to be drawn, and arranges through tail
Exhaust pipe 147 flows to the discharge of exhaust chimney 80.Meanwhile micro clean combustion product will be backwashed windmill 166 and be drawn, by
One catalytic thermal storage room, 10 backwash, gas is through the first catalytic thermal storage room backwash valve 160, the first catalytic thermal storage room backwash pipeline 161, stream
Through backwash windmill 166, then through backwash pipeline 167, send catalytic thermal storage room gas feeding pipe 108 back to；First catalytic thermal storage room 10 is anti-
After detergent, the outlet catalytic thermal storage room that then can be used as next circulation " two into one go out three backwashes " is used.In this example
In, the cold bypass express passway 129 in third catalytic thermal storage room provides lower heat exchange efficiency and gives VOCs exhaust gas, so that part VOCs
Exhaust gas can enter high-temperature oxydation reaction chamber 50 with lower temperature, reach the operation temperature for adjusting control high-temperature oxydation reaction chamber 50
Purpose；Since the combustion heat value that volatile organic chemical exhaust gas 100 discharges also can be via high-temperature oxydation reaction chamber 50 and second
The oxidation reaction of the porous catalyst bed 23 of catalytic thermal storage room releases excess energy；At this point, accumulation of heat regenerative catalysis oxidation
It is quick also to adjust the cold bypass in the second catalytic thermal storage room of control simultaneously for the high-temperature oxydation reaction chamber overtemperature logic controller 320 of device 1
The aperture in channel 127, effectively excess energy is discharged.
Two into one go out three backwashes
To which after a certain period of time, switch valve, the volatile organic chemical exhaust gas 100 for being intended to processing imports this and stored energy
The second catalytic thermal storage of high breeding ground room 20 of amount preheats, and high-temperature gas energy is then stored in the first catalytic thermal storage room 10 after reaction, complete
At the operation circulation of " two into one go out three backwashes ".This operational method is to close the first catalytic thermal storage room air inlet valve 110, open first
Catalytic thermal storage room exhaust valve 130 closes the first catalytic thermal storage room backwash valve 160, and opens the second catalytic thermal storage room air inlet valve
112, it closes the second catalytic thermal storage room exhaust valve 132, close the second catalytic thermal storage room backwash valve 162, close third catalytic thermal storage
Room air inlet valve 114 closes third catalytic thermal storage room exhaust valve 134, opens third catalytic thermal storage room backwash valve 164, and VOCs is given up
Gas imports the second catalytic thermal storage room 20 through the second catalytic thermal storage room gas feeding pipe 113, and gas initially enters the second catalytic thermal storage room
Air inlet chamber 21, uniformly be sent into the second catalytic thermal storage room porous regenerator bed 22 be preheated to certain temperature after, passed through second
The porous catalyst bed 23 of catalytic thermal storage room carries out partial oxidation, then using high-temperature oxydation reaction chamber overtemperature logic controller
320 adjust the cold bypass express passway 127 in the second catalytic thermal storage rooms of control, the cold bypass express passway 125 in the first catalytic thermal storage room and
The cold bypass express passway 129 in third catalytic thermal storage room, the effective high-temperature oxydation room 50 that controls are operated in most suitable catalytic reaction temperature,
Then, it is then sent through the first catalytic thermal storage room 10, it is anti-that the porous catalyst bed 13 through the first catalytic thermal storage room carries out high-temperature S removal
It answers, the VOCs in exhaust gas containing VOCs is thoroughly destroyed；Thereafter, high-temperature gas passes through the porous regenerator bed of the first catalytic thermal storage room
12 are stored in the sensible heat of high-temperature gas in the 12 accumulation of heat material of porous regenerator bed of former the first catalytic thermal storage room cooled down；It is handed over through heat
Gas after changing, then after the air inlet chamber 11 of the first catalytic thermal storage room mixes, arranged with lower temperature through the first catalytic thermal storage room
Feed channel 131 flows to exhaust pipe 144 from the first catalytic thermal storage room exhaust valve 130, ejectment blower 145 is lured to be drawn, and arranges through tail
Exhaust pipe 147 flows to the discharge of exhaust chimney 80.Meanwhile micro clean combustion product will be backwashed windmill 166 and be drawn, by
Three catalytic thermal storage rooms, 30 backwash, gas is through third catalytic thermal storage room backwash valve 164, third catalytic thermal storage room backwash pipeline 165, stream
Through backwash windmill 166, then through backwash pipeline 167, send catalytic thermal storage room gas feeding pipe 108 back to；Third catalytic thermal storage room 30 is anti-
After detergent, the outlet catalytic thermal storage room that then can be used as next circulation " one into three goes out two backwashes " is used.In this example
In, the cold bypass express passway 127 in the second catalytic thermal storage room provides lower heat exchange efficiency and gives VOCs exhaust gas, so that part VOCs
Exhaust gas can enter high-temperature oxydation reaction chamber 50 with lower temperature, reach the operation temperature for adjusting control high-temperature oxydation reaction chamber 50
Purpose；Since the combustion heat value that volatile organic chemical exhaust gas 100 discharges also can be via high-temperature oxydation reaction chamber 50 and first
The oxidation reaction of the porous catalyst bed 13 of catalytic thermal storage room releases excess energy；At this point, accumulation of heat regenerative catalysis oxidation
It is quick also to adjust the cold bypass in the first catalytic thermal storage room of control simultaneously for the high-temperature oxydation reaction chamber overtemperature logic controller 320 of device 1
The aperture in channel 125, effectively excess energy is discharged.
The accumulation of heat regenerative catalytic oxidizer of processing VOC exhaust gas of the invention, is via Integration Design in catalytic thermal storage room
Cold bypass express passway and flow control valve, cooperate high-temperature oxydation reaction chamber overtemperature logic controller 320, planned using PLC
Programming, is combined with combustion completion controller 300, and it is quickly logical to control the cold bypass in the first catalytic thermal storage room with PID control mode tuning
Road flow control valve 124, the cold bypass express passway flow control valve 126 in the second catalytic thermal storage room and third catalytic thermal storage room are cold
Express passway flow control valve 128 is bypassed, the purpose of the operation temperature of stability contorting high-temperature oxydation reaction chamber 50 is reached, so that this
The accumulation of heat regenerative catalytic oxidizer 1 of invention can be needed in response to industry VOCs exhaust gas control emission, for fast-changing
VOCs exhaust gas concentration and speed, concentration are higher than applicable cases of setting value etc., can provide a brand-new and safe control
Tool processed.
Above-mentioned disclosed attached drawing, explanation, the processing VOCs exhaust gas of preferable two slot type only of the invention and three slot types
Accumulation of heat regenerative catalytic oxidizer embodiment, be familiar with this those skilled in the art generally, according to made by this case scope modification, etc.
The variation such as effect variation or increase heat storage tank number, should include in this case claim.
Fig. 4 and Fig. 5 is that VOCs exhaust gas flows through the ratio of cold bypass express passway or the flow area ratio (α) of express passway
With the relationship of concentration changing ratio (C/Co), wherein β is that the gas energy rate of recovery through supercooling bypass express passway is stored with normal
The gas energy rate of recovery ratio of hott bed.It is shown by Fig. 4, the material and structure design of cold bypass express passway determine β value, β value
The smaller ability in response to concentration variation is stronger.If system is wider in response to concentration variation range, designs accumulation of heat regenerative and urge
When changing oxidator 1, the flow area ratio (α) of express passway just needs to increase.As shown in figure 5, working as the flow area of express passway
When ratio (α) is equal to 10%, if β value is designed as 0.1, accumulation of heat regenerative catalytic oxidizer 1 changes in VOCs exhaust gas concentration and increases
When adding up to 94%, stability contorting operation temperature is remained in former setting value.But when β value is designed as 0.3, then accumulation of heat regenerative is catalyzed
Oxidator 1 remains to stability contorting operation temperature in former setting value when the variation of VOCs exhaust gas concentration increases by 73%.High-temperature oxydation is anti-
The collocation optimization control programming technique of room overtemperature logic controller 320 is answered, when the concentration ratio of VOCs exhaust gas can be allowed to increase by 20%,
It remains to make 1 stability contorting operation temperature of accumulation of heat regenerative catalytic oxidizer following in the temperature high position warning of former setting value；For example,
When the flow area ratio (α) of express passway is equal to 10%, if β value is designed as 0.1, accumulation of heat regenerative catalytic oxidizer 1
When the variation of VOCs exhaust gas concentration increases up to 94% × 1.2=112.8%, such as former design VOCs exhaust gas concentration is 1500ppm,
When system operatio is to 3192ppm, system remains to stability contorting operation.When β value is designed as 0.3, then accumulation of heat regenerative is catalyzed oxygen
Change device 1 when VOCs exhaust gas concentration changes and increases by 73% × 1.2=87.6%, such as former design VOCs exhaust gas concentration is
1500ppm, when system operatio is to 2814ppm, system remains to stability contorting operation temperature in former setting value.
The material and structure design of cold bypass express passway determine the size of β value, for example, the porosity ε of porous material is got over
Greatly, effective aperture DhBigger and material specific heat CpIt is smaller all to influence β value, so that β value is smaller, according to equation (2), quickly
The flow area ratio (α) in channel is inversely proportional with (1- β), the flow area ratio (α) of express passway required for β value is smaller
It is smaller.The material and structure design β value for being commonly designed selection are principle less than 0.5, and best less than 0.3 with β value.If in use
Material of the empty ceramic tube as cold bypass express passway, β value levels off to zero, according to equation (2), the flow area of express passway
Ratio (α) is inversely proportional with (1- β), and the flow area ratio (α) of express passway required for β value is smaller is also smaller, therefore, uses
Hollow ceramic pipe, the flow area ratio (α) of required express passway are also minimum；But use hollow ceramic pipe as cold bypass
The material of express passway, design on material structure needs are specifically designed.
In conclusion the accumulation of heat regenerative catalytic oxidizer of disclosed processing VOC exhaust gas, does not have in the past
, and can really reach the enhancement of effect, and have for industry applications.Above-mentioned disclosed attached drawing, explanation, it is only of the invention
This those skilled in the art is familiar in preferred embodiment generally, according to modification or equivalence changes made by this case scope, should be included in
In this case claim.
Claims (9)
1. a kind of accumulation of heat regenerative catalytic oxidizer contains at least two catalytic thermal storage rooms, a high-temperature oxydation reaction chamber, wherein
The porous regenerator bed that has porous material to be piled into catalytic thermal storage room has a porous catalyst bed above the porous regenerator bed, high
Warm oxidation reaction chamber is located above catalytic thermal storage room and in conjunction with catalytic thermal storage room, and the porous storage in each catalytic thermal storage room
There is the cold bypass express passway of one group of gas inside hott bed, has one group of flow control valve in the cold bypass express passway bottom of gas.
2. accumulation of heat regenerative catalytic oxidizer as claimed in claim 1, wherein the stream of the cold bypass express passway bottom of each group of gas
Adjustable valve can be with independent control.
3. accumulation of heat regenerative catalytic oxidizer as claimed in claim 1, wherein the material for constituting the cold bypass express passway of gas is more
Porous materials, regenerative capacity are 50% or less the regenerative capacity of porous regenerator bed porous material.
4. accumulation of heat regenerative catalytic oxidizer as claimed in claim 1, wherein during the material for constituting the cold bypass express passway of gas is
Empty ceramic tube.
5. accumulation of heat regenerative catalytic oxidizer as claimed in claim 1 is equipped with high-temperature oxydation reaction chamber overtemperature logic controller, automatically
Control the flow control valve of the cold bypass express passway of gas.
6. a kind of cold bypass express passway of the gas of accumulation of heat regenerative catalytic oxidizer, positioned at there is porous material in catalytic thermal storage room
Expect inside the porous regenerator bed being piled into, and one group of flow control valve is arranged at the cold bypass express passway bottom of gas.
7. the flow of the cold bypass express passway of the gas of accumulation of heat regenerative catalytic oxidizer as claimed in claim 6, bottom is adjusted
Valve utilizes overtemperature logic controller independent control.
8. the cold bypass express passway of the gas of accumulation of heat regenerative catalytic oxidizer as claimed in claim 6, is laid with using porous material
It forms.
9. the cold bypass express passway of the gas of accumulation of heat regenerative catalytic oxidizer as claimed in claim 6 is spread using hollow ceramic pipe
If forming.
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| CN110508127A (en) * | 2019-08-15 | 2019-11-29 | 新疆金禾山能源科技有限公司 | A kind of VOCs processing high-efficiency heat-accumulating catalyst oxidation reactor |
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