CN107281933A - A kind of high-concentration organic waste gas processing system - Google Patents
A kind of high-concentration organic waste gas processing system Download PDFInfo
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- CN107281933A CN107281933A CN201710692950.9A CN201710692950A CN107281933A CN 107281933 A CN107281933 A CN 107281933A CN 201710692950 A CN201710692950 A CN 201710692950A CN 107281933 A CN107281933 A CN 107281933A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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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
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of high-concentration organic waste gas processing system, it is related to pharmaceuticals industry technical field of waste gas treatment.Including：Heat exchange type CO devices, water cooler and molecular sieve adsorption desorption apparatus, waste gas is directly entered heat exchange type CO devices by pipeline, carries out the oxidation Decomposition of high-concentration organic waste gas, the high-temperature gas after decomposition, enter molecular sieve adsorption desorption apparatus by water cooler, the gas after absorption is expelled directly out.The high-temperature gas of molecular sieve desorption elegance heat exchange type CO gas outlets, desorption outlet is back to heat exchange type CO devices front end, continues oxidation processes, forms local closed loop state；Molecular sieve cooling wind utilizes gas after normal temperature air, cooling to be still delivered to heat exchange type CO front ends.Whole processing system flexibility of the invention is strong, clean-up effect is superior, heat makes full use of, substandard is discharged, and in the high organic exhaust gas of concentration for the treatment of, equipment investment is optimal.
Description
Technical field
The present invention relates to pharmaceuticals industry technical field of waste gas treatment, more particularly to a kind of high-concentration organic waste gas processing system
System.
Background technology
China's pharmaceuticals industry is environmental pollution rich and influential family, and wherein exhaust gas constituents are complicated, and contamination hazard is serious, and waste gas discharge is presented
Erratic behavior, so that develop adaptable exhaust treatment system seems particularly critical in pharmaceuticals industry waste gas pollution control and treatment field.
In recent years, molecular sieve adsorption enrichment facility enjoys the favor of waste gas pollution control and treatment industry with catalytic oxidizing equipment.Molecular sieve is inhaled
Attached concentration principle is：Adsorbed again using absorption-elevated temperature desorption concentration-cooling, three continuous temp.-changing adsorptions, the programs of desorption
Change process so that low-concentration organic exhaust gas concentration is the waste gas of high concentration, the technology is mainly reduction of aftertreatment device
Cost of investment.
Heat exchange catalytic oxidizing equipment (heat exchange type CO devices) principle be：By the organic pollution in waste gas such as benzene class, ketone
Class, esters, phenols, aldehydes, alcohols, ethers, hydro carbons etc. carry out heated oxide, are decomposed into CO2And H2The micromolecular compounds such as O.Mesh
Preceding catalytic oxidation treatment device is equipped with waste heat recovery module, preheats the organic exhaust gas subsequently entered, so as to save waste gas heating
Energy resource consumption.
Based on molecular sieve adsorption enrichment facility and the characteristics of catalytic oxidizing equipment, at the organic exhaust gas of low concentration
Reason, first choice is stable, efficient molecular sieve adsorption is concentrated and oxidation Decomposition combined treatment process, such as, patent CN205850524U-
Catalytic combustion system after waste gas Adsorption Concentration；For the VOCs treatment of higher concentration, one or more levels is typically directly selected
High temperature oxidation process equipment, such as, a kind of heat accumulating type Catalytic oxidation furnaces of Chinese patent CN203208897U-, this technique have with
Lower shortcoming：Because the removal efficiency of catalytic oxidizing equipment is 95%-97%, when waste gas operating mode concentration is high and single-stage catalytic oxidizing equipment
Low emission standard can not be met and (be not more than 20mg/m3) when, necessarily using multistage high-temperature oxidation device equipment, and use at multistage
Equipment is managed, whole technological equipment investment can be caused very high with operating cost, treatment effeciency is greatly reduced (especially second level processing
Device, energy consumption will be very high).
Therefore, the deficiency and defect existed the present invention be directed to prior art provides a kind of the organic of high concentration of optimization
Exhaust treatment system.
The content of the invention
It is an object of the invention to provide a kind of high-concentration organic waste gas processing system, so as to solve to exist in the prior art
Foregoing problems.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of high-concentration organic waste gas processing system, including be sequentially connected：Heat exchange type CO devices, water cooler and molecule
Adsorption/desorption device is sieved, the heat exchange type CO devices carry out single treatment to waste gas, and the molecular sieve adsorption desorption apparatus is to useless
Gas carries out after-treatment, and the heat exchange type CO devices combine the molecular sieve adsorption desorption apparatus technique and ensure waste gas substandard row
Put；
The molecular sieve adsorption desorption apparatus includes adsorption zone, cooling zone and desorption area；
The air inlet of the water cooler is connected with the exhaust outlet of the heat exchange type CO devices, the exhaust of the water cooler
Mouth is connected with the air inlet of the adsorption zone, and the exhaust outlet of the adsorption zone is connected with chimney；
The air inlet in the desorption area is connected with the exhaust outlet of the heat exchange type CO devices, the exhaust outlet in the desorption area with
The air inlet connection of the heat exchange type CO devices；
The exhaust outlet of the cooling zone is connected with the air inlet of the heat exchange type CO devices.
Preferably, the exhaust outlet of the heat exchange type CO devices is connected with the air inlet of the heat exchange type CO devices.
Preferably, in addition to four air-introduced machines, wherein, an air-introduced machine is communicated with the exhaust outlet of the adsorption zone,
One air-introduced machine is communicated with the exhaust outlet in the desorption area, an air-introduced machine and the exhaust outlet phase of the cooling zone
Logical, an air-introduced machine is communicated with the exhaust outlet of the heat exchange type CO devices.
Preferably, the heat exchange type CO devices include multistage preheating heat exchanger, catalysis oxidation room and the heating being sequentially connected with
Room, the exhaust outlet of the heating chamber is connected with the air inlet of the multistage preheating heat exchanger.
Preferably, the water cooler includes heat transfer zone and dehumidifying area, and the air inlet of the gas from the cooler enters
Enter, first pass around the heat transfer zone, then by the dehumidifying area, finally discharged from the exhaust outlet of the cooler.
The beneficial effects of the invention are as follows：A kind of high-concentration organic waste gas processing system provided in an embodiment of the present invention, including：
Heat exchange type CO devices, water cooler and molecular sieve adsorption desorption apparatus, waste gas are directly entered heat exchange type CO devices by pipeline, enter
The oxidation Decomposition of row high-concentration organic waste gas, the high-temperature gas after decomposition enters molecular sieve adsorption by water cooler and is desorbed dress
Put, the gas after absorption is expelled directly out.The high-temperature gas of molecular sieve desorption elegance heat exchange type CO gas outlets, desorption outlet is returned
To heat exchange type CO devices front end, continue oxidation processes, form local closed loop state；Molecular sieve cooling wind utilizes normal temperature air, cold
But gas is still delivered to heat exchange type CO front ends after.Whole processing system flexibility of the invention is strong, clean-up effect is superior, heat fills
Divide utilization, substandard discharge, in the high organic exhaust gas of concentration for the treatment of, equipment investment is optimal.
Brief description of the drawings
Fig. 1 is the pipeline connection diagram of high-concentration organic waste gas processing system.
In figure, the implication of each symbol is as follows：
The original organic exhaust gas of 1--, 2-1-- air inlet pipe, 2-2-- high-temperature gas return ducts, 2-3-- water composite cooling pipes, 2-4-- inhales
Attached blast pipe, 2-5-- air cooling pipes, 2-6-- desorption pipes, 3-- heat exchange type CO stoves, 3-1-- multistage preheating heat exchangers, 3-2-- is urged
Change oxidizing chamber, 3-3-- heating chambers, No. 1 blower fan of 4--, 5-- water coolers, 5-1--- heat transfer zones, 5-2-- dehumidifying area, 6-- points
Son sieve adsorption/desorption device, 6-1-- adsorption zones, 6-2-- cooling zones, 6-3-- desorptions area, No. 2 blower fan of 7--, No. 3 wind of 8--
Machine, No. 4 blower fan of 9--, 10-- chimneys.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing, the present invention is entered
Row is further described.It should be appreciated that embodiment described herein is not used to only to explain the present invention
Limit the present invention.
The embodiments of the invention provide a kind of high-concentration organic waste gas processing system, including be sequentially connected：Heat exchange type CO
Device, water cooler and molecular sieve adsorption desorption apparatus, the heat exchange type CO devices carry out single treatment, the molecule to waste gas
Sieve adsorption/desorption device and after-treatment is carried out to waste gas, the heat exchange type CO devices combine the molecular sieve adsorption desorption apparatus work
Skill ensures the discharge of waste gas substandard；
The molecular sieve adsorption desorption apparatus includes adsorption zone, cooling zone and desorption area；
The air inlet of the water cooler is connected with the exhaust outlet of the heat exchange type CO devices, the exhaust of the water cooler
Mouth is connected with the air inlet of the adsorption zone, and the exhaust outlet of the adsorption zone is connected with chimney；
The air inlet in the desorption area is connected with the exhaust outlet of the heat exchange type CO devices, the exhaust outlet in the desorption area with
The air inlet connection of the heat exchange type CO devices；
The exhaust outlet of the cooling zone is connected with the air inlet of the heat exchange type CO devices.
The processing system of said structure, its operation principle is：
The high-concentration organic waste gas of raw emissions enters heat exchange type CO stoves by airduct, and by bottom, multistage preheating heat exchanger enters
Row preheating, subsequently enters Catalytic oxidation furnace, and most of organic molecule is oxidized after decomposition, then by multistage preheating heat exchanger,
Heat recovery is carried out, the exhaust of CO stoves is delivered to gas backstreaming and water cooling pipeline.
Provided with two units of heat exchange and dehumidifying inside water cooler, gas enters from the air inlet of the cooler, first
By the heat transfer zone, then by the dehumidifying area, finally discharged from the exhaust outlet of the cooler so that pass through water cooling
The gas of device, removes big portion's water while cooling, water cooler outlet is connected with the adsorption zone of molecular sieve adsorption desorption apparatus.Inhale
Attached clean gas is directly discharged to chimney；It is desorbed gas and comes from heat exchange type CO gas outlets high temperature reflux pipe, and it is organic to carry high concentration
The desorption outlet of solvent returns to CO stoves air inlet, and catalysis oxidation is decomposed again；Molecular sieve adsorption desorption apparatus cooling gas is that normal temperature is empty
Gas, CO stokeholds end is delivered to by blower negative pressure, and cooling wind carries a small amount of organic solvent, is degraded organic solvent using CO stoves, no
Pressure is brought to exhaust concentration.
In addition, heat exchange type CO stoves oxidation Decomposition produces a large amount of water, the ability of molecular sieve adsorption organic matter can be caused to decline, because
This water cooler is the premise for ensureing molecular sieve high-efficient operation, is an indispensable pretreatment module.
In said process, the high-temperature gas of CO stoves rear end discharge a, part is back to CO stove imports, improved into CO furnace gases
Temperature, reduce multistage preheating heat exchanger thermic load；A part is used for thermal desorption, and gas temperature is not less than 150 DEG C, reduces molecule
Sieve the energy-output ratio of heater in adsorption/desorption mechanism；The backflow of high-temperature gas, also reduces pretreatment module and molecular sieve is inhaled
The equipment investment of attached desorption module.
Wherein, the exhaust outlet of the heat exchange type CO devices is connected with the air inlet of the heat exchange type CO devices.
In said structure, the high-temperature gas that heat exchange type CO devices can be caused to discharge a, part is back to CO stove imports, carried
Height enters the temperature of CO furnace gases, reduces multistage preheating heat exchanger thermic load.
High-concentration organic waste gas processing system provided in an embodiment of the present invention, in addition to four air-introduced machines, wherein, an institute
The exhaust outlet that air-introduced machine is stated with the adsorption zone is communicated, and an air-introduced machine is communicated with the exhaust outlet in the desorption area, one
The air-introduced machine is communicated with the exhaust outlet of the cooling zone, the exhaust outlet phase of an air-introduced machine and the heat exchange type CO devices
It is logical.
Air-introduced machine is set by the exhaust outlet in each equipment, it is possible to use the gas of discharge is delivered to next by blower negative pressure
In process.
Wherein, the heat exchange type CO devices include multistage preheating heat exchanger, catalysis oxidation room and the heating chamber being sequentially connected with,
The exhaust outlet of the heating chamber is connected with the air inlet of the multistage preheating heat exchanger.
The course of work of said structure is：The high-concentration organic waste gas of raw emissions enters heat exchange type CO stoves by airduct,
By bottom, multistage preheating heat exchanger is preheated, and subsequently enters Catalytic oxidation furnace, and most of organic molecule is oxidized after decomposition,
Again after heating chamber, multistage preheating heat exchanger is finally entered, heat recovery is carried out.
Specific embodiment：
As shown in figure 1, the pipeline connection of above-mentioned processing system and the course of work can be：
High-concentration waste gas is directly entered heat exchange type CO processing units by pipeline, by CO device internal multi-stage preheating heat exchangers
Air inlet waste gas is heated up, optimal catalytic reaction temperature is reached.High-temperature gas after catalytic oxidation is used as heat exchanger
Thermal source pre-heating intaking gas, accomplishes heat recovery.
Under No. 1 negative-pressure air fan that heat exchange type CO is connected in gas outlet drives, start working, and discharge high-temperature gas.No. 1 wind
Three tunnels of machine outlet point：The first via connects water cooler import, for entering back end processing module molecular sieve adsorption desorption apparatus
Gas carries out water cooling processing, it is ensured that the normal sorption work of molecular sieve, absorption outlet is then direct in the case where No. 2 blower negative pressures drive
Discharge.Second tunnel is back to heat exchange type CO air inlet, is diluted into the pending gas concentration of system front end, reduces rear end
The treating capacity of equipment is managed, and is used as air inlet high-concentration waste gas rapid dilution wind.3rd tunnel connection molecule sieve adsorption/desorption device
Desorption gas import, make full use of heat exchange type CO outlets discharge gas heat, reduce heater energy consumption, desorption gas outlet have
No. 3 blower fans, negative pressure drives desorption gas, and desorption wind is blasted into heat exchange type CO device imports, oxidation point is carried out using heat exchange type CO
Solution, forms closed cycle；Molecular sieve adsorption desorption apparatus cools down general mood body and is back to heat exchange simultaneously in the case where No. 4 blower negative pressures drive
Formula CO air inlet.
It can be seen that the processing system of said structure has following features：
1. system design is novel.Using heat exchange type CO and the organic waste of molecular sieve adsorption desorption apparatus Combined Treatment high concentration
Gas, first with heat exchange type CO by high-concentration waste gas oxidation Decomposition, recycles molecular sieve to do adsorption treatment, finally meets minimum discharge
Standard is (such as：No more than 20mg/m3)。
2. device plays maximum purification efficiency.Heat exchange type catalysis oxidation is used in combination with molecular sieve adsorption desorption apparatus,
One stage catalyzing oxidation and the optimization process efficiency of adsorption/desorption are given full play to, various environmental protection equipments have played the use effect of maximum
Rate.And in the prior art, the processing discarded for high concentration can only select multistep treatment, and multistep treatment investment cost is high, and
Treatment effeciency is low, and in the present invention, heat exchange type CO combines with molecular sieve adsorption desorption apparatus to be used in combination, only with being once catalyzed oxygen
Change is handled, and can reduce the investment cost of CO devices, and efficiency high.
3. heat makes full use of, energy consumption is low, cost of investment is low.First, heat exchange type CO device interiors multistage preheating heat exchanger,
Energy recovery, reduces energy loss, and electrical heating energy consumption is low, second, the high-temperature gas of heat exchange type CO devices discharge a, part is used
In the desorption of molecular sieve, the high cost of desorption is saved, a part is back to CO devices front end, for diluting pending gas,
Eliminate the distribution capacity of outside air, also reduce the size of follow-up equipment, save follow-up equipment (molecular sieve adsorption desorption apparatus,
Water cooler, blower fan etc.).
4. flexibility is strong.Also it is applied to high concentration and exhaust gas concentration fluctuates big operating mode.
5. floor space is small.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained：The embodiment of the present invention is carried
A kind of high-concentration organic waste gas processing system supplied, including be sequentially connected：Heat exchange type CO devices, water cooler and molecular sieve are inhaled
Attached desorption apparatus, waste gas is directly entered heat exchange type CO devices by pipeline, carries out the oxidation Decomposition of high-concentration organic waste gas, decomposes
High-temperature gas afterwards, enters molecular sieve adsorption desorption apparatus by water cooler, and the gas after absorption is expelled directly out.Molecular sieve takes off
The high-temperature gas of attached elegance heat exchange type CO gas outlets, desorption outlet is back to heat exchange type CO devices front end, continues oxidation processes,
Form local closed loop state；Molecular sieve cooling wind utilizes gas after normal temperature air, cooling to be still delivered to heat exchange type CO front ends.This
Invent that whole processing system flexibility is strong, clean-up effect is superior, heat makes full use of, substandard is discharged, high in concentration for the treatment of
In organic exhaust gas, equipment investment is optimal.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
Between the difference of other embodiment, each embodiment identical similar part mutually referring to.
Those skilled in the art should be understood that the sequential for the method and step that above-described embodiment is provided can be entered according to actual conditions
Row accommodation, also can concurrently be carried out according to actual conditions.
All or part of step in the method that above-described embodiment is related to can be instructed by program correlation hardware come
Complete, described program can be stored in the storage medium that computer equipment can be read, for performing the various embodiments described above side
All or part of step described in method.The computer equipment, for example：Personal computer, server, the network equipment, intelligent sliding
Dynamic terminal, intelligent home device, wearable intelligent equipment, vehicle intelligent equipment etc.；Described storage medium, for example：RAM、
ROM, magnetic disc, tape, CD, flash memory, USB flash disk, mobile hard disk, storage card, memory stick, webserver storage, network cloud storage
Deng.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, commodity or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, commodity or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, commodity or equipment.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (5)
1. a kind of high-concentration organic waste gas processing system, it is characterised in that including what is be sequentially connected：Heat exchange type CO devices, water cooling
But device and molecular sieve adsorption desorption apparatus, the heat exchange type CO devices carry out single treatment to waste gas, and the molecular sieve adsorption takes off
Adsorption device carries out after-treatment to waste gas, and the heat exchange type CO devices combine the molecular sieve adsorption desorption apparatus technique and ensure useless
Gas substandard is discharged；
The molecular sieve adsorption desorption apparatus includes adsorption zone, cooling zone and desorption area；
The air inlet of the water cooler is connected with the exhaust outlet of the heat exchange type CO devices, the exhaust outlet of the water cooler with
The air inlet connection of the adsorption zone, the exhaust outlet of the adsorption zone is connected with chimney；
The air inlet in the desorption area is connected with the exhaust outlet of the heat exchange type CO devices, the exhaust outlet in the desorption area with it is described
The air inlet connection of heat exchange type CO devices；
The exhaust outlet of the cooling zone is connected with the air inlet of the heat exchange type CO devices.
2. high-concentration organic waste gas processing system according to claim 1, it is characterised in that the heat exchange type CO devices
Exhaust outlet is connected with the air inlet of the heat exchange type CO devices.
3. high-concentration organic waste gas processing system according to claim 1, it is characterised in that also including four air-introduced machines,
Wherein, an air-introduced machine is communicated with the exhaust outlet of the adsorption zone, an air-introduced machine and the exhaust in the desorption area
Mouth is communicated, and an air-introduced machine is communicated with the exhaust outlet of the cooling zone, and an air-introduced machine is filled with the heat exchange type CO
The exhaust outlet put is communicated.
4. high-concentration organic waste gas processing system according to claim 1, it is characterised in that the heat exchange type CO device bags
The multistage preheating heat exchanger being sequentially connected with, catalysis oxidation room and heating chamber are included, the exhaust outlet of the heating chamber and the multistage are pre-
The air inlet connection of heat exchanger.
5. high-concentration organic waste gas processing system according to claim 1, it is characterised in that the water cooler includes changing
Hot-zone and dehumidifying area, the gas enter from the air inlet of the cooler, the heat transfer zone are first passed around, then by described
Dehumidify area, is finally discharged from the exhaust outlet of the cooler.
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| CN201710692950.9A CN107281933B (en) | 2017-08-14 | 2017-08-14 | High concentration organic waste gas treatment system |
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| CN201710692950.9A CN107281933B (en) | 2017-08-14 | 2017-08-14 | High concentration organic waste gas treatment system |
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| CN107281933B CN107281933B (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554118A (en) * | 2018-04-16 | 2018-09-21 | 李庆彪 | Bicyclic return-air road Adsorption Concentration thermal desorption catalytic combustion system |
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| DE4003668A1 (en) * | 1989-02-20 | 1990-08-23 | Siemens Ag | Outgoing air purification - by absorption of hydrocarbon(s) in activated carbon followed by desorption and catalytic oxidn. |
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| DE4003668A1 (en) * | 1989-02-20 | 1990-08-23 | Siemens Ag | Outgoing air purification - by absorption of hydrocarbon(s) in activated carbon followed by desorption and catalytic oxidn. |
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| CN108554118B (en) * | 2018-04-16 | 2020-10-09 | 李庆彪 | Double-loop gas path adsorption concentration thermal desorption catalytic combustion system |
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| Publication number | Publication date |
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| CN107281933B (en) | 2019-12-06 |
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