CN105749695B - A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment and its technique - Google Patents

A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment and its technique Download PDF

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CN105749695B
CN105749695B CN201610258218.6A CN201610258218A CN105749695B CN 105749695 B CN105749695 B CN 105749695B CN 201610258218 A CN201610258218 A CN 201610258218A CN 105749695 B CN105749695 B CN 105749695B
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gas
desorption
heat exchanger
adsorption
room
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CN105749695A (en
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董迎雯
徐遵主
李明
孙永嘉
费正连
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Nanjing University Environmental Planning And Design Research Institute Stock Co
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Nanjing University Environmental Planning And Design Research Institute Stock Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/14—Gaseous waste or fumes

Abstract

The invention discloses a kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment and its techniques, belong to industrial waste gas purifying field.Including waste gas inlet, adsorption/desorption room and catalytic decomposition room, further include heat exchanger, heater and internal circulating fan, wherein, adsorbent is equipped in adsorption/desorption room, adsorption/desorption room is equipped with waste gas inlet, desorption gas gas outlet, exhaust outlet and desorption gas import, desorption gas import is connected to one end of internal circulating fan by pipeline, the other end, heat exchanger, heater and one end of catalytic decomposition room of internal circulating fan are sequentially connected, the other end of catalytic decomposition room is connect with heat exchanger, and heat exchanger is connected to desorption gas gas outlet.It is more efficient using the removal for the contaminant component that multi-stage absorption system makes adsorption capacity weaker, and peculiar smell purification efficiency improves, multicomponent exhaust gas stably reaching standard；The adsorption efficiency of organic exhaust gas is improved, catalytic exhaust residual heat recovery energy-saving effect is notable.

Description

A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment and its technique
Technical field
The present invention relates to industrial waste gas purifying fields more particularly to a kind of low concentration, Wind Volume, high peculiar smell exhaust gas to concentrate energy Source equipment and its technique.
Background technology
" concentration is low, large-minded, component is more, peculiar smell is dense " is the production dirt feature of common industrial organic exhaust gas.With resident couple The continuous promotion of ambient atmosphere quality requirement, more and more blowdown enterprises are faced with " peculiar smell complaint " puzzlement, meanwhile, blowdown is received The implementation of expense system has also beaten alarm bell to blowdown enterprise, and enterprise is to development steady in a long-term, it is necessary to solve exhaust gas peculiar smell and ask Topic.And some common at present VOCs treatment technologies, such as high temperature incineration method, absorption process, plasma method, photochemical catalytic oxidation Method etc., due to economy, technology and management etc. are various, it is difficult to meet current and environmental requirement from now on.
Traditional absorption-catalytic decomposition process leads to the purification efficiency system of multicomponent pollutant due to competitive Adsorption About, if the absorption of adsorbent is easy to occur peak value in desorption process to lead to safety problem with long, desorption is also easily caused Next round adsorption efficiency is not caused totally to reduce problem.
There are the following problems for currently used adsorbent equipment：1. operating cost is high.Replacement or steam due to adsorbent are again It is raw, it causes system operation expense higher, causes system operating ratio low, mostly decoration device.2. stably reaching standard is difficult.Since industry is different The multi-component competitive Adsorption problem of taste exhaust gas, causes peculiar smell purification efficiency not high, it is difficult to ensure the stably reaching standard of peculiar smell.3. grasping Make complex management.It regularly replaces adsorbent or steam regeneration method is difficult to realize automation control, increase the difficulty of operator Degree and workload.4. security risk.Traditional absorption-catalytic decomposition process is susceptible to desorption shakiness due to adsorbing with long It is fixed, there is safety problem.It always will appear adsorbent equipment combustion problem in recent years, gently then injury device, it is heavy then explode, sum up Reason is mainly that gas concentration mutates, and reaches burning limit.A kind of situation of gas concentration mutation is gas source condition shakiness Fixed, fluctuation of concentration causes, and is in addition exactly absorption with long, is desorbed unstable, and instantaneous concentration occur transfinites.
Chinese invention patent, publication No.：CN 103438467A, date of publication：2013.12.11 disclosing a kind of organic waste Aspiration desorption concentration catalytic combustion device system, including dry filter device, dry filter device lower end are connected with catalysis Burning bed, the catalysis burning bed right end are connected with spark arrester a, and the spark arrester a bottom righthand sides are connected with benefit cold blast sliding valve, described to urge Change burning bed lower end and is also associated with temperature control valve (TCV).The replacing construction of the invention activated carbon greatly promotes, and reduces activated carbon Replacing construction, activated carbon can effectively desorption and regeneration recycle, and the organic exhaust gas after desorption thoroughly decomposes after catalysis is burnt For CO2 and H2O, non-secondary pollution, system uses PLC and human-computer interface control operating system, easy to operate, and reducing maloperation can Energy.Its shortcoming is：First, absorbing process is used using conventional two towers switching in the patent, and a tower adsorbs online, and a tower exists Line is desorbed, and adsorption tower easily occurs adsorbing with the problems such as long, adsorption efficiency is low, desorption is not clean when carrying out adsorption operations.Its Secondary, desorption gas reuse equally realizes concentration energy, has very big advantage compared to traditional adsorption/desorption technique, but is catalyzed Reaction itself is more demanding to temperature condition, and gas temperature is extremely difficult to urge after being desorbed generally in 200~450 DEG C, the patent Change and requires, even if reaching catalytic reaction temperature, organic component, which decomposes the reaction heat generated, to make gas temperature further increase, This can bring both sides problem：First, high-temperature gas itself is dangerous, easily adsorbent is made to catch fire, temperature is higher, and danger is got over Greatly, because the thing for making equipment damage or explode completely of catching fire is appeared in the newspapers repeatly in recent years；Another aspect desorption temperature is general At 260 DEG C hereinafter, excessively high gas temperature can cause additional energy waste.
Chinese utility model patent, Authorization Notice No.：CN 204601947U, authorized announcement date：2015.09.02 announcing A kind of volatile organic waste gas treatment device integrating absorption-desorption-catalysis burning, is related in field of environment protection The processing unit of volatile organic waste gas, it is characterized in that：Catalytic combustion system is mounted in adsorbent equipment, and adsorbent is seated in suction In the chuck that adsorption device and catalytic combustion system are formed, the heat adsorbent generated in catalyticing combustion process completes desorption, Gas after desorption enters catalytic combustion system and forms cycle, effectively solves each in traditional absorption/desorption-catalytic combustion system From the problems such as solely invest larger, high energy consumption, operating cost is high.Disadvantage is that：The patent is shared due to absorption and catalysis A set of gas piping realizes that the unlatching of demand property, to close catalytic module difficult, and cannot achieve continuous production；In addition, this is specially Equally there is aforementioned patent (Chinese invention patent, publication No. in profit：CN 103438467A, date of publication：2013.12.11) same Problem, in addition it is more severe, i.e. and catalysis reaction needs to reach certain temperature condition, does not occur any heating in the patent and sets It is standby；Furthermore adsorption process is typical exothermic process, since catalysis reaction heat can make adsorbent bed temperature liter by wall Height, it is very unfavorable to adsorption process, therefore patent engineering application can encounter many problems.
Invention content
1. technical problems to be solved by the inivention
For the low problem of the organic exhaust gas adsorption efficiency of the prior art, the present invention provides a kind of low concentration, Wind Volume, High peculiar smell exhaust gas concentration energy equipment and its technique.It improves the adsorption efficiency of organic exhaust gas.
2. technical solution
To solve the above problems, technical solution provided by the invention is：
A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, including waste gas inlet, adsorption/desorption room Further include heat exchanger, heater and internal circulating fan, wherein be equipped with adsorbent in adsorption/desorption room, inhale with catalytic decomposition room Attached desorption chamber is equipped with waste gas inlet, desorption gas gas outlet, exhaust outlet and desorption gas import, and desorption gas import is recycled with internal One end of wind turbine is connected to by pipeline, the other end of internal circulating fan, heat exchanger, heater and be catalytically decomposed one end of room according to Secondary connection, the other end that room is catalytically decomposed are connect with heat exchanger, and heat exchanger is connected to desorption gas gas outlet.
Preferably, adsorption/desorption room includes primary adsorption desorption chamber and secondary absorption desorption chamber, and a desorption gas import is given up Gas air inlet and desorption gas gas outlet are each provided in primary adsorption desorption chamber, and primary adsorption desorption chamber and secondary absorption desorption chamber connect Logical, another desorption gas import and exhaust outlet are each provided in secondary absorption desorption chamber.
Preferably, heat exchanger is sequentially connected in series by first-class heat exchanger, secondary heat exchanger and three-level heat exchanger, level-one heat exchange The upper side of device is connected to the upper side of secondary heat exchanger, and the downside of secondary heat exchanger and the downside of three-level heat exchanger connect Logical, the upper side of the inlet communication of three-level heat exchanger and heater, three-level heat exchanger is connected to catalytic decomposition room, first-class heat exchanger It is connected to desorption gas gas outlet.
Preferably, primary adsorption desorption chamber, adsorbent used in secondary absorption desorption chamber, according to the composition of air source and dense Degree distribution is sorbent material of the same race.
Preferably, primary adsorption desorption chamber, adsorbent used in secondary absorption desorption chamber, according to the composition of air source and dense Degree distribution, is different types of sorbent material.
Preferably, the series of heat exchanger is adjustable, and heat exchanger series is determined according to gas temperature after heat exchange, gas temperature after heat exchange Ranging from 80~200 DEG C of degree.
Preferably, indoor adsorbent bed layered arrangement is desorbed in primary adsorption desorption chamber and secondary absorption.
A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, and industrial waste gas passes through above-described one kind Low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment are handled, and step is：
A, the industrial waste gas entered from waste gas inlet is by primary adsorption desorption chamber, and a part of contaminant component is in level-one Adsorption on the adsorbent of adsorption/desorption room；
B, the weaker contaminant remaining component of another part adsorption capacity enters secondary absorption desorption chamber, is desorbed by secondary absorption The adsorbent of room adsorbs, and pure air is discharged by exhaust outlet, this is adsorption process；
C, the cleaning of internal circulating fan suction multi-stage heat exchanger discharge, high temperature air；Simultaneously by two desorption gas imports Into in secondary absorption desorption chamber and primary adsorption desorption chamber；
D, it is desorbed through heating power, secondary absorption desorption chamber and primary adsorption are desorbed in indoor adsorbent surface and duct and adhere to Gas molecule parsing, be back to gas phase again, mix with carrier gas, formed low-temperature mixed gas, by desorption gas gas outlet discharge, this is Desorption process；
E, the low-temperature mixed gas after desorption passes through first-class heat exchanger, secondary heat exchanger, three-level heat exchanger and heater successively It is warming up to catalytic decomposition temperature, is burnt into catalytic decomposition room, this is catalyticing combustion process；
F, catalyticing combustion process discharges heat, and the taken heat part of high-temperature gas heats absorption as the heat source of heat exchanger The low-temperature mixed gas of desorption chamber discharge, another part heat are aspirated with carrier gas by internal circulating fan, are sent into level-one simultaneously respectively Adsorption/desorption room is desorbed adsorbent heating power with secondary absorption desorption chamber, repeats step C, D and E.
Preferably, the out temperature of room, heat exchanger and heater is catalytically decomposed can need adjustment to urge according to technique Changing the gas temperature before decomposing can be compensated by heater to catalysis oxidation required temperature；
Preferably, catalytic decomposition needs to carry out at a certain temperature, and temperature range is 300~380 DEG C.
3. advantageous effect
Using technical solution provided by the invention, compared with prior art, have the advantages that：
(1) traditional absorption-catalytic decomposition process is due to competitive Adsorption, cause the purification efficiency of multicomponent pollutant by It restricts, if the absorption of adsorbent is easy to occur peak value in desorption process to lead to safety problem with long, also easily causes de- It is attached that next round adsorption efficiency is not caused totally to reduce problem；The present invention uses two-stage adsorption system, i.e. adsorption/desorption room includes one Grade adsorption/desorption room and secondary absorption desorption chamber, the industrial waste gas entered from waste gas inlet is by primary adsorption desorption chamber, and one Most of contaminant component Adsorption on the adsorbent of primary adsorption desorption chamber, the weaker contaminant remaining component of adsorption capacity It is adsorbed again into secondary absorption desorption chamber, pure air is discharged by exhaust outlet, avoids regional competitive Adsorption, is improved more The adsorption efficiency of component pollutant；
(2) removal for the contaminant component that the present invention makes adsorption capacity weaker using multi-stage absorption system is more efficient, different Taste purification efficiency improves, multicomponent exhaust gas stably reaching standard；
(3) heat exchanger of the invention uses plural serial stage, the high-temperature gas after catalysis reaction that heat is reached desorption low temperature Gas, entire heat transfer process is steady, heat exchange efficiency and capacity usage ratio are high, and energy reuse so that additional heat is few, and operating cost is bright It is aobvious to reduce；
(4) catalytic decomposition process of the present invention discharges heat, heat source of the taken heat part of high-temperature gas as heat exchanger The low-temperature mixed gas of adsorption/desorption room discharge is heated, another part heat is aspirated with carrier gas by internal circulating fan, respectively simultaneously Be sent into primary adsorption desorption chamber and secondary absorption desorption chamber adsorbent heating power is desorbed, repeat step C, D and E, automatic cycle into Row desorption and catalytic decomposition, adsorbent heat air regenesis fully achieve automation control, hence it is evident that reduce the difficulty of execute-in-place worker Degree and workload.
Description of the drawings
Fig. 1 is low concentration of the present invention, Wind Volume, high peculiar smell exhaust gas concentration energy device structure schematic diagram；
Fig. 2 is low concentration of the present invention, Wind Volume, high peculiar smell exhaust gas concentration energy process flow diagram.
Label declaration in schematic diagram：
1, waste gas inlet；2, primary adsorption desorption chamber；3, secondary absorption desorption chamber；4, exhaust outlet；5, gas import is desorbed； 6, desorption gas gas outlet；71, first-class heat exchanger；72, secondary heat exchanger；73, three-level heat exchanger；8, heater；9, it is catalytically decomposed Device；10, internal circulating fan.
Specific implementation mode
To further appreciate that present disclosure, in conjunction with accompanying drawings and embodiments, the present invention is described in detail.
In conjunction with Fig. 1-2, a kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, including waste gas inlet 1, Adsorption/desorption room, catalytic decomposition room 9, heat exchanger, heater 8 and internal circulating fan 10, wherein be equipped with and inhale in adsorption/desorption room Attached dose, adsorption/desorption room is equipped with waste gas inlet 1, desorption gas gas outlet 6, exhaust outlet 4 and desorption gas import 5, desorption gas into Mouth 5 is connected to one end of internal circulating fan 10 by pipeline；
Adsorption/desorption room includes primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3, a desorption gas import 5, exhaust gas into Gas port 1 and desorption gas gas outlet 6 are each provided in primary adsorption desorption chamber 2, primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3 Connection, another desorption gas import 5 and exhaust outlet 4 are each provided in secondary absorption desorption chamber 3.
Traditional absorption-catalytic decomposition process leads to the purification efficiency system of multicomponent pollutant due to competitive Adsorption About, if the absorption of adsorbent is easy to occur peak value in desorption process to lead to safety problem with long, desorption is also easily caused Next round adsorption efficiency is not caused totally to reduce problem.The present invention is to solve the problems, such as this, and using two-stage adsorption system, i.e. absorption is de- Alcove includes primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3, and the industrial waste gas entered from waste gas inlet 1 passes through level-one Adsorption/desorption room 2, most contaminant component Adsorption, adsorption capacity on the adsorbent of primary adsorption desorption chamber 2 are weaker Contaminant remaining component enter secondary absorption desorption chamber 3 and adsorb again, pure air is discharged by exhaust outlet 4, avoids region Sexual competition is adsorbed, and the adsorption efficiency of multicomponent pollutant can improve 5%~30%.Multi-stage absorption system so that adsorption capacity is weaker Contaminant component removal it is more efficient, peculiar smell purification efficiency synchronize improve 5%~30%, multicomponent exhaust gas stably reaching standard.
Adsorbent used in primary adsorption desorption chamber 2, secondary absorption desorption chamber 3 can be activated carbon, activated carbon fibre, Carbon molecular sieve, silica gel, activated alumina, synthesis zeolite etc., according to the composition and concentration distribution of air source, primary adsorption is de- Alcove 2 and secondary absorption desorption chamber 3 can be sorbent material of the same race or different types of sorbent material.
The other end, heat exchanger, heater 8 and one end of catalytic decomposition room 9 of internal circulating fan 10 are sequentially connected, and are catalyzed The other end of decomposition chamber 9 is connect with heat exchanger, and heat exchanger is connected to desorption gas gas outlet 6.
Heat exchanger is sequentially connected in series by first-class heat exchanger 71, secondary heat exchanger 72 and three-level heat exchanger 73, level-one heat exchange The upper side of device 71 is connected to the upper side of secondary heat exchanger 72, under the downside and three-level heat exchanger 73 of secondary heat exchanger 72 Side is connected to, the inlet communication of three-level heat exchanger 73 and heater 8, and upper side and the catalytic decomposition room 9 of three-level heat exchanger 73 connect Logical, first-class heat exchanger 71 is connected to desorption gas gas outlet 6.Heat exchanger is connected, and why is constrained to exchange heat at present using three-level The efficiency of device realizes that big temperature difference heat exchange, first-class heat exchanger are technically difficult to realize, so required for being obtained by increasing series Temperature value, fully ensured that heat transfer effect so that desorption temperature remains at defined temperature range.
The series of heat exchanger is adjustable, and heat exchanger series is determined according to gas temperature after heat exchange, air temperature ranges after heat exchange It is 80~200 DEG C.Adsorbent bed layered arrangement in primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3, contact area increase Greatly, gas-flow resistance reduces；Adsorption effect enhances.
A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, and industrial waste gas passes through above-described one kind Low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment are handled, and step is：
A, the industrial waste gas entered from waste gas inlet 1 is by primary adsorption desorption chamber 2, and a part of contaminant component is one Adsorption on the adsorbent of grade adsorption/desorption room 2；
B, the weaker contaminant remaining component of another part adsorption capacity enters secondary absorption desorption chamber 3, is taken off by secondary absorption The adsorbent of alcove 3 adsorbs, and pure air is discharged by exhaust outlet 4, this is adsorption process；As shown in Figure 1, primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3 be integrated, communicate between the two, here it is integrated two-stage series connection adsorption systems；
C, internal circulating fan 10 aspirate cleaning, high temperature air that first-class heat exchanger 71 is discharged (unspecial air into Gas port, using air source for the first time, there are two types of modes：First, the air in entire adsorption/desorption room；Second is that draught fan impeller part is leaked The supplement air come in, because gas recycles between desorption, catalysis, heat exchange, desorption always, without gas consumption, normal operation Afterwards, air need not additionally be supplemented.)；By two desorption gas imports 5 (can only air inlet) while entering 3 He of secondary absorption desorption chamber In primary adsorption desorption chamber 2, this is desorption system in parallel；With the adsorption system in step B, it is used in conjunction with primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3, it is formed " integrated two-stage series connection absorption-parallel connection desorption system "；
D, it is desorbed through heating power, it is attached in secondary absorption desorption chamber 3 and adsorbent surface in primary adsorption desorption chamber 2 and duct The gas molecule parsing, is back to gas phase again, is mixed with carrier gas (i.e. clean, high temperature air), low-temperature mixed gas is formed, by taking off Attached gas gas outlet 6 is discharged, this is desorption process, and whole process realizes that heat reuse, hot-air automation regeneration form hot-air Regenerative system is automated, substantially energy saving consumption reduces operating cost.
E, the low-temperature mixed gas after desorption passes through first-class heat exchanger 71, secondary heat exchanger 72,73 and of three-level heat exchanger successively Heater 8 is warming up to catalytic decomposition temperature, and temperature range is 300~380 DEG C, is burnt into catalytic decomposition room 9, this is catalysis Combustion system, catalysis burning are a meanings with catalytic decomposition, and product is substantially CO2And H2O, direct and heat enters together to be changed Hot device；Catalytic decomposition room 9 is inner to release big calorimetric because combustion reaction occurs, and high temperature, the pure air of discharge can turn through heat exchanger Remove a part of heat, desorption process can dissipate another part heat again, and desorption makes the gaseous molecular for being adsorbed on surface gather around again There is kinetic energy, and be distributed in gas, therefore, the temperature of desorption gas (i.e. gaseous mixture) is relatively low.
F, catalytic decomposition process release heat, high-temperature gas (it is exactly to be catalyzed reaction heat to improve mixed gas temperature in fact, Become high-temperature gas) the low-temperature mixed gas of taken a heat part as the heat source heating adsorption/desorption room discharge of heat exchanger, separately A part of heat is aspirated with carrier gas by internal circulating fan 10, and it is de- with secondary absorption to be sent into primary adsorption desorption chamber 2 simultaneously respectively Adsorbent heating power is desorbed in alcove 3, repeats step C, D and E.Automatic cycle is desorbed and is catalytically decomposed, adsorbent heat air Regeneration fully achieves automation control, hence it is evident that reduces the difficulty and workload of execute-in-place worker.
It can solve the problems, such as that exhaust gas peculiar smell removal rate caused by Multicomponent Competitive Adsorption Onto is not high through the invention, be effectively ensured While peculiar smell removal effect, the decomposition heat of pollutant is made full use of, reduces the operating cost of system, ensures that the safety of system is steady Fixed operation.
The out temperature of catalytic decomposition room 9, heat exchanger and heater 8 can need to adjust according to technique.Technique needs Refer to that jljl system desorption temperature is not different, for example, benzene desorption temperature at 80 DEG C, the desorption temperature of dimethylbenzene is 140 degree, other The desorption temperature of object system can be provided according to its physical parameter (boiling point) in technological process；The present invention is an equipment, applicable In various object systems, so temperature needs need to adjust according to technique.
Embodiment 1
In conjunction with Fig. 1-2, a kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, including waste gas inlet 1, Adsorption/desorption room and catalytic decomposition room 9 further include heat exchanger, heater 8 and internal circulating fan 10, wherein adsorption/desorption room Interior to be equipped with adsorbent, adsorption/desorption room is equipped with waste gas inlet 1, desorption gas gas outlet 6, exhaust outlet 4 and desorption gas import 5, Desorption gas import 5 is connected to one end of internal circulating fan 10 by pipeline, and adsorption/desorption room includes 2 He of primary adsorption desorption chamber Secondary absorption desorption chamber 3, a desorption gas import 5, waste gas inlet 1 and desorption gas gas outlet 6 are each provided at primary adsorption desorption On room 2, primary adsorption desorption chamber 2 is connected to secondary absorption desorption chamber 3, another desorption gas import 5 and exhaust outlet 4 are each provided at two On grade adsorption/desorption room 3.
Adsorbent bed layered arrangement in primary adsorption desorption chamber 2 and secondary absorption desorption chamber 3；Primary adsorption desorption chamber 2, adsorbent used in secondary absorption desorption chamber 3 is sorbent material of the same race according to the composition and concentration distribution of air source.
The other end, heat exchanger, heater 8 and one end of catalytic decomposition room 9 of internal circulating fan 10 are sequentially connected, and are catalyzed The other end of decomposition chamber 9 is connect with heat exchanger, and heat exchanger is connected to desorption gas gas outlet 6.
Heat exchanger is sequentially connected in series by first-class heat exchanger 71, secondary heat exchanger 72 and three-level heat exchanger 73, level-one heat exchange The upper side of device 71 is connected to the upper side of secondary heat exchanger 72, under the downside and three-level heat exchanger 73 of secondary heat exchanger 72 Side is connected to, the inlet communication of three-level heat exchanger 73 and heater 8, and upper side and the catalytic decomposition room 9 of three-level heat exchanger 73 connect Logical, first-class heat exchanger 71 is connected to desorption gas gas outlet 6.
The series of heat exchanger is adjustable, and heat exchanger series is determined according to gas temperature after heat exchange, air temperature ranges after heat exchange It is 80 DEG C.
A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, and industrial waste gas passes through above-described one kind Low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment are handled, and step is：
A, the industrial waste gas entered from waste gas inlet 1 is by primary adsorption desorption chamber 2, and a part of contaminant component is one Adsorption on the adsorbent of grade adsorption/desorption room 2；
B, the weaker contaminant remaining component of another part adsorption capacity enters secondary absorption desorption chamber 3, is taken off by secondary absorption The adsorbent of alcove 3 adsorbs, and pure air is discharged by exhaust outlet 4, this is adsorption process；
C, internal circulating fan 10 aspirates the cleaning of heat exchanger discharge, high temperature air；By two desorption gas imports 5 simultaneously into Enter in secondary absorption desorption chamber 3 and primary adsorption desorption chamber 2；
D, it is desorbed through heating power, it is attached in secondary absorption desorption chamber 3 and adsorbent surface in primary adsorption desorption chamber 2 and duct The gas molecule parsing, is back to gas phase, is mixed with carrier gas, form low-temperature mixed gas, be discharged by desorption gas gas outlet 6 again, This is desorption process；
E, the low-temperature mixed gas after desorption passes through first-class heat exchanger 71, secondary heat exchanger 72,73 and of three-level heat exchanger successively Heater 8 is warming up to catalytic decomposition temperature, and temperature range is 300 DEG C, is burnt into catalytic decomposition room 9, this is that catalysis is burned Journey；The out temperature that room 9, heat exchanger and heater 8 is catalytically decomposed can be needed according to technique before adjusting catalytic decomposition Gas temperature can be compensated by heater 8 to catalysis oxidation required temperature；
F, catalyticing combustion process discharges heat, and the taken heat part of high-temperature gas heats absorption as the heat source of heat exchanger The low-temperature mixed gas of desorption chamber discharge, another part heat are aspirated with carrier gas by internal circulating fan 10, are sent into one simultaneously respectively Grade adsorption/desorption room 2 is desorbed adsorbent heating power with secondary absorption desorption chamber 3, repeats step C, D and E.
Embodiment 2
The present embodiment is similar to Example 1, wherein the difference is that, the series of heat exchanger is adjustable, and heat exchanger grade is several It is determined according to gas temperature after heat exchange, air temperature ranges are 200 DEG C after heat exchange.
A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, the low-temperature mixed gas after being desorbed in step E It is warming up to catalytic decomposition temperature by first-class heat exchanger 71, secondary heat exchanger 72, three-level heat exchanger 73 and heater 8 successively, temperature Ranging from 380 DEG C of degree burns into catalytic decomposition room 9.
Embodiment 3
The present embodiment is similar to Example 1, wherein the difference is that, the series of heat exchanger is adjustable, and heat exchanger grade is several It is determined according to gas temperature after heat exchange, air temperature ranges are 100 DEG C after heat exchange.
A kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, the low-temperature mixed gas after being desorbed in step E It is warming up to catalytic decomposition temperature by first-class heat exchanger 71, secondary heat exchanger 72, three-level heat exchanger 73 and heater 8 successively, temperature Ranging from 350 DEG C of degree burns into catalytic decomposition room 9.
Embodiment 4
The present embodiment and embodiment 1-3 are similar, wherein the difference is that, primary adsorption desorption chamber 2, secondary absorption are de- Adsorbent used in alcove 3 is different types of sorbent material according to the composition and concentration distribution of air source.
The problem of low concentration, Wind Volume, high peculiar smell exhaust gas are primarily present is since there are peculiar smell removal is not thorough for competitive Adsorption Bottom, even if qualified discharge, the peculiar smell problem Ye Huishi enterprises that disturb residents constantly complain by resident.The present invention is by increasing secondary absorption Desorption chamber effectively avoids the absorption competition between different component, and the component of strong adsorption force removes in primary adsorption room, adsorption capacity Weak component removes again in secondary absorption room, and peculiar smell purification is complete.
Meanwhile low concentration Wind Volume exhaust gas is directly catalyzed, processing cost of burning and operating cost are high, technical difficulty is big, this Invention makes low concentration gas contaminant component concentration improve 5~10 times by Adsorption Concentration, and catalytic burning difficulty reduces, and logical Multi-stage heat exchanger is crossed, realizes that catalysis reaction heat energy recycles, energy-saving effect is notable.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution Similar frame mode and embodiment, are within the scope of protection of the invention.

Claims (8)

1. a kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, including waste gas inlet（1）, adsorption/desorption room With catalytic decomposition room（9）, which is characterized in that further include heat exchanger, heater（8）With internal circulating fan（10）, wherein absorption Adsorbent is equipped in desorption chamber, adsorption/desorption room is equipped with waste gas inlet（1）, desorption gas gas outlet（6）, exhaust outlet（4）With Gas import is desorbed（5）, gas import is desorbed（5）With internal circulating fan（10）One end be connected to by pipeline, internal circulating fan （10）The other end, heat exchanger, heater（8）With catalytic decomposition room（9）One end be sequentially connected, be catalytically decomposed room（9）It is another One end is connect with heat exchanger, heat exchanger and desorption gas gas outlet（6）Connection；
Adsorption/desorption room includes primary adsorption desorption chamber（2）With secondary absorption desorption chamber（3）, a desorption gas import（5）, exhaust gas Air inlet（1）With desorption gas gas outlet（6）It is each provided at primary adsorption desorption chamber（2）On, primary adsorption desorption chamber（2）It is inhaled with two level Attached desorption chamber（3）Connection, another desorption gas import（5）And exhaust outlet（4）It is each provided at secondary absorption desorption chamber（3）On；Heat exchange The series of device is adjustable, and heat exchanger series is determined according to gas temperature after heat exchange, and air temperature ranges are 80~200 DEG C after heat exchange.
2. a kind of low concentration according to claim 1, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, feature exists In heat exchanger is by first-class heat exchanger（71）, secondary heat exchanger（72）With three-level heat exchanger（73）It is sequentially connected in series, level-one heat exchange Device（71）Upper side and secondary heat exchanger（72）Upper side connection, secondary heat exchanger（72）Downside and three-level heat exchanger （73）Downside connection, three-level heat exchanger（73）With heater（8）Inlet communication, three-level heat exchanger（73）Upper side with Room is catalytically decomposed（9）Connection, first-class heat exchanger（71）With desorption gas gas outlet（6）Connection.
3. a kind of low concentration according to claim 1, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, feature exists In primary adsorption desorption chamber（2）, secondary absorption desorption chamber（3）Used adsorbent, according to the composition of air source and concentration point Cloth is sorbent material of the same race.
4. a kind of low concentration according to claim 1, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, feature exists In primary adsorption desorption chamber（2）, secondary absorption desorption chamber（3）Used adsorbent, according to the composition of air source and concentration point Cloth is different types of sorbent material.
5. a kind of low concentration according to claim 1, Wind Volume, high peculiar smell exhaust gas concentrate energy equipment, feature exists In primary adsorption desorption chamber（2）With secondary absorption desorption chamber（3）Interior adsorbent bed layered arrangement.
6. a kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, which is characterized in that industrial waste gas passes through right It is required that a kind of low concentration, Wind Volume, high peculiar smell exhaust gas concentration energy equipment described in 1 are handled, step is：
A, from waste gas inlet（1）The industrial waste gas of entrance passes through primary adsorption desorption chamber（2）, a part of contaminant component is one Grade adsorption/desorption room（2）Adsorbent on Adsorption；
B, the weaker contaminant remaining component of another part adsorption capacity enters secondary absorption desorption chamber（3）, it is desorbed by secondary absorption Room（3）Adsorbent absorption, pure air is by exhaust outlet（4）Discharge, this is adsorption process；
C, internal circulating fan（10）Aspirate cleaning, the high temperature air of heat exchanger discharge；By two desorption gas imports（5）While into Enter secondary absorption desorption chamber（3）With primary adsorption desorption chamber（2）It is interior；
D, it is desorbed through heating power, secondary absorption desorption chamber（3）With primary adsorption desorption chamber（2）It is attached in interior adsorbent surface and duct The gas molecule parsing, is back to gas phase, is mixed with carrier gas, low-temperature mixed gas is formed, by desorption gas gas outlet again（6）Row Go out, this is desorption process；
E, the low-temperature mixed gas after desorption passes through first-class heat exchanger successively（71）, secondary heat exchanger（72）, three-level heat exchanger（73） And heater（8）It is warming up to catalytic decomposition temperature, into catalytic decomposition room（9）Burning, this is catalyticing combustion process；
F, catalyticing combustion process discharges heat, and the taken heat part of high-temperature gas heats adsorption/desorption as the heat source of heat exchanger The low-temperature mixed gas of room discharge, another part heat is with carrier gas by internal circulating fan（10）Suction is sent into level-one simultaneously respectively Adsorption/desorption room（2）With secondary absorption desorption chamber（3）Adsorbent heating power is desorbed, step C, D and E are repeated.
7. a kind of low concentration according to claim 6, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, feature exists In catalytic decomposition room（9）, heat exchanger and heater（8）Out temperature can need to adjust according to technique, catalysis point Gas temperature before solution can pass through heater（8）It compensates to catalysis oxidation required temperature.
8. a kind of low concentration according to claim 6, Wind Volume, high peculiar smell exhaust gas concentrate energy technique, feature exists In catalytic decomposition needs to carry out at a certain temperature, and temperature range is 300~380 DEG C.
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