CN109589744A - A kind of active carbon adsorption desorption technique - Google Patents
A kind of active carbon adsorption desorption technique Download PDFInfo
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- CN109589744A CN109589744A CN201811588826.9A CN201811588826A CN109589744A CN 109589744 A CN109589744 A CN 109589744A CN 201811588826 A CN201811588826 A CN 201811588826A CN 109589744 A CN109589744 A CN 109589744A
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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
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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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- 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
- B01D2253/102—Carbon
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- 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
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
Abstract
The invention discloses a kind of a kind of active carbon adsorption desorption techniques of active carbon adsorption desorption technique, it is characterized in that, the technique being desorbed using activated carbon adsorption and RCO, this technique has well solved existing active carbon adsorption desorption technique, and energy consumption is high, the problem that fire risk is big and active carbon service life is short.Not only make the even flow field for guaranteeing adsorbent bed of the exhaust gas in absorbent charcoal adsorption tank, flow velocity design is reasonable, also to guarantee that adsorption process is also that the heat that generates of the phase transition process for having organic matter in exhaust gas to become liquid from gaseous state can dissipate in time, not will lead to the phase transformation heat in the organic matter of activated carbon adsorption and constantly accumulate and active-carbon bed heat up is caused to cause danger.
Description
Technical field
The present invention relates to industrial organic exhaust gas improvement, specifically a kind of active carbon adsorption desorption technique.
Background technique
The active carbon adsorption desorption technique some of prevalence is using TO/CO furnace as oxidation unit on the market at present, due to disengaging
The mouth temperature difference is big, causes energy consumption height.In the adsorption desorption technique of the prior art, the thermal current of desorption has filled into a large amount of fresh airs just for temperature
The temperature being properly desorbed is dropped to, and brings fresh air into and just brings a large amount of oxygen into, therefore be easy kindling.There is also air distributions in technique to cool down
Bad control.Because of a kind of completely new technique being desorbed using activated carbon adsorption and RCO of the invention, this technique solves well
Having determined, energy consumption is high for existing active carbon adsorption desorption technique, the problem that fire risk is big and active carbon service life is short.
Summary of the invention
It is an object of the present invention to be directed to above-mentioned problem, the present invention provides a kind of active carbon adsorption desorption techniques, special
Sign is that processing step is as follows:
1) industrial organic exhaust gas is by sequentially entering adsorption tower, absorption blower, activated carbon adsorption imported valve, work after filter
Property charcoal absorption outlet valve, active carbon desorption imported valve, active carbon desorption valve and protective gas valve, absorption wind
Machine, discharge pipe enter hot wind desorption；
2) desorption of the organic matter in active carbon is desorbed with hot wind, and the discarded small air quantity high concentration for being desorbed out is using RCO/
RTO oxidation unit is aoxidized, and is connected with new air-valve in the outlet of oxidation unit and is provided with and is mixed into fresh air cooling, fresh air conduct
The supply that the oxygen that oxidation process needs is added is filled into oxidation unit arrival end:
Oxidation unit can be high-performance RTO device and be also possible to RCO device, preferably at most uses RCO device, includes
RCO/RTO equipment, new air-valve fill into the oxygen, fire arrester, warm-up cycle valve of oxidation process needs for preheating RCO/RTO dress
It sets, the control of regulating valve one allows extra hot wind to discharge, heater realizes alternating temperature desorption, desorption blower；
Hypoxemia exhaust gas after being aoxidized using RCO/RTO is desorbed into charcoal canister to active-carbon bed；What desorption came out
High-concentration waste gas fills into fresh air before entering RCO/RTO oxidation unit, increases the oxygen that oxidation process needs；
3) desorption when low energy consumption the inlet and outlet temperature difference based on RCO/RTO device it is small and realizes, the temperature of control RCO/RTO device
Lower than the temperature that active carbon is desorbed safely, realize that carrying out alternating temperature to the organic matter of activated carbon adsorption is desorbed work by control heater
Skill；
4) heat exchanger is set between the high temperature bypass of RCO and desorption air-flow, is exported below in the high temperature gas flow of heat exchanger
A regulating valve and triple valves, which is arranged, can further heat in the heat using high temperature gas flow by air-flow is desorbed, to save
Energy consumption, setting triple valves can control high temperature gas flow (heat exchange cooling after) and enter desorption airflow pipeline to carry out mixed heat de- to improve
Attached wind-warm syndrome, or this strand of air-flow is oriented to smoke stack emission.
Preferably, being directed to the high temperature of RCO/RTO oxidizing chamber, high temperature can be set in the oxidizing chamber of RCO/RTO and bypass, if
Set the organic exhaust gas that high temperature bypass can come out in desorption organic concentration is excessively high or the calorific value of organic matter is excessively high causes oxygen
Change room temperature be higher than catalyst normally endure high temperature when, can by heat bypass draw one high temperature gas flow, by heat from
Oxidizing chamber takes away control oxidizing chamber temperature protection catalyst.
Preferably, the design installation thermostabilization furnace before heater；Because RCO/RTO outlet temperature is fluctuation, in order to
The variable air rate of active carbon is desorbed and stablizes desorption, needs heater to adjust desorption air temperature, after adding thermostabilization furnace, heater
Inlet temperature it is just stable, the computer heating control of heater is simpler, run it is also more stable.
Preferably, absorbent charcoal material can also be using the zeolitic material substitution of absorption organic matter.
Preferably, the catalyst that RCO of the invention is loaded is that the rare-earth oxidation type of state-of-the-art technology is urged using rare earth catalyst
Agent, preparation temperature are 750 DEG C, and catalyst can endure high temperature；Organic concentration in desorption air-flow, which is got higher, causes oxidizing chamber
Temperature increases, and according to thermal balance, needs to adjust the outlet temperature of RCO, waste heat is drained, and will result in going out for RCO in this way
Mouth temperature is more than the safe desorption temperature of active carbon, because oxidation catalyst can endure high temperature and can stablize going out for RCO
The mouth temperature difference, stablizes separating process, guarantees alternating temperature desorption and the hypoxemia separating process of cold wind is not added.
The invention has the advantages that:
1), active-carbon bed rational design not only makes the even flow field for guaranteeing adsorbent bed of the exhaust gas in absorbent charcoal adsorption tank, stream
Speed design rationally, will also guarantee that adsorption process (and the phase transition process for having the organic matter in exhaust gas to become liquid from gaseous state) generates
Heat can dissipate in time, not will lead to the phase transformation heat in the organic matter of activated carbon adsorption and constantly accumulate and cause active carbon
Bed heating causes danger.
The adsorption design of the Active Carbon in Organic of completely new active carbon absorption technology is set according to the crushing less than 1500Pa
Meter, exhaust gas are designed in active-carbon bed flow velocity according to the flow velocity of 0.6 meter per second, and flow Field Design of the exhaust gas in active-carbon bed guarantees
Exhaust gas is uniformly through active carbon；These parameters ensure that (and organic matter becomes liquid from gaseous state to charcoal adsorption process
Phase transition process) generate heat can dissipate, will not accumulate in active carbon cause it is active-carbon bed heat up cause danger.It is living simultaneously
Property charcoal adsorbent bed absorption inlet and outlet and desorption inlet and outlet have the pneumatic control valve of zero leakage, even if these valves are out of control
When (power loss, lose gas) can all be automatically closed, the active-carbon bed temperature for being equipped with temperature sensor detection active carbon, once discovery temperature
Degree is more than that dangerous temperature will automatically close all valves, if temperature, which steeply rises, can also open protection gas, allows and protects gas
Oxygen content, which is reduced, into adsorbent bed guarantees that active carbon will not catch fire.
2) it is desorbed using hypoxemia exhaust gas
The gas being discharged after being aoxidized using RCO/RTO as desorption air-flow, reduce desorption air-flow in oxygen content, avoid because
The burning that oxidation caused by coming into full contact with for organic matter and oxygen acutely occurs.
3) alternating temperature separating process
In the different phase of active carbon desorption, different for the concentration of organic matter in active carbon, the temperature that air-flow is desorbed is different
Sample, the more ultralow temperature desorptions of initial stage organic matter, gas flow temperature is desorbed less and steps up for later period organic matter, in different times using different
Desorption temperature maintain one it is relatively slowly effective stablize desorption process, the organic matter for being desorbed out remains metastable dense
Degree.Because the outlet temperature difference of RCO/RTO is small, RCO/RTO exit flow (for the desorption air-flow of Detachment Activity charcoal organic matter)
Temperature only has 70-75 degrees Celsius, and completely newly the safe temperature of process activity charcoal desorption is at 85-130 degrees Celsius, because passing through control
The heating of RCO exit flow may be implemented 85-130 degrees Celsius of alternating temperature desorption.
4) using high-quality heat-storing material (oxidation catalyst) as guarantee
It realizes 1) and key technology 2) is to control the core technology of the RCO/RTO inlet and outlet temperature difference, using good filling RCO/
The heat-storing material (RCO has oxidation catalyst) of RTO we can control RCO/RTO the inlet and outlet temperature difference it is Celsius in 10-15
The temperature of degree, the organic exhaust gas discharge after guaranteeing the oxidation of RCO/RTO oxidizing chamber does not need to realize cooling by the benefit wind of air-cooler,
New oxygen content will not be filled into desorption air-flow, active carbon there will not be fire hazard in desorption.
5) because the inlet and outlet temperature difference of RCO/RTO is small, low energy consumption for oxidation unit, runs more energy efficient.
6) RCO/RTO is regenerative oxidation device, and oxidative system starting can independent startup, system operation in valley electricity price
Expense further decreases.
7) oxidation unit operation is safer
The alternating temperature desorption technology of completely new technique obtains the organic concentration of desorption air-flow at 600-1000 milligrams or so, suitable
Concentration under exhaust gas collided caused by valve transfer explosion danger will not occur.
It is (3*3 millimeters small that 1000 millimeters of ceramic small hole barrier is had more than between the oxidizing chamber and bottom air duct of RCO/RTO
Hole), these apertures play the role of best back-fire relief, so high-concentration waste gas will not in the oxidizing chamber internal oxidition of RCO/RTO device
Open fire is caused to be transmitted to bottom low temperature space.
Oxidation furnaces warm-up cycle valve in preheating is opened, and stop valve one is closed, and RCO/RTO preheater stays in desorption
Realize that short-circuit cycle operation preheats oxidation unit under the driving of blower, warm-up cycle valve is closed when running desorption, stop valve
One opens, and the desorption exits and entrances valve for the charcoal canister for needing to be desorbed is opened, and absorption exits and entrances valve is closed, and desorption wind enters work
Property charcoal bed be desorbed, the high-concentration waste gas for being desorbed out enter RCO/RTO before fill into fresh air, the gas after oxidation one
Lease making regulating valve one is drained, another part be exactly be desorbed air-flow through the flow control of regulating valve two enter heater obtain be suitble to not
With desorption stage temperature desorption hot wind enter it is active-carbon bed.
Compared with old technology, the beneficial effects of the present invention are: desorption operating cost is low, desorption is safe and reliable, active carbon is de-
Attached effect is good, and active carbon service life greatly improves.
Detailed description of the invention
Fig. 1 is present invention process flowage structure schematic diagram.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figure 1, a kind of active carbon adsorption desorption technique, which is characterized in that processing step is as follows:
1) industrial organic exhaust gas is by sequentially entering adsorption tower, absorption blower, activated carbon adsorption imported valve, work after filter
Property charcoal absorption outlet valve, active carbon desorption imported valve, active carbon desorption valve and protective gas valve, absorption wind
Machine, discharge pipe enter hot wind desorption；
2) desorption of the organic matter in active carbon is desorbed with hot wind, and the discarded small air quantity high concentration for being desorbed out is using RCO/
RTO oxidation unit is aoxidized, and is connected with new air-valve in the outlet of oxidation unit and is provided with and is mixed into fresh air cooling, fresh air conduct
The supply that the oxygen that oxidation process needs is added is filled into oxidation unit arrival end:
Oxidation unit can be high-performance RTO device and be also possible to RCO device, preferably at most uses RCO device, includes
RCO/RTO equipment, new air-valve fill into the oxygen, fire arrester, warm-up cycle valve of oxidation process needs for preheating RCO/RTO dress
It sets, the control of regulating valve one allows extra hot wind to discharge, heater realizes alternating temperature desorption, desorption blower；
Hypoxemia exhaust gas after being aoxidized using RCO/RTO is desorbed into charcoal canister to active-carbon bed；What desorption came out
High-concentration waste gas fills into fresh air before entering RCO/RTO oxidation unit, increases the oxygen that oxidation process needs；
3) desorption when low energy consumption the inlet and outlet temperature difference based on RCO/RTO device it is small and realizes, the temperature of control RCO/RTO device
Lower than the temperature that active carbon is desorbed safely, realize that carrying out alternating temperature to the organic matter of activated carbon adsorption is desorbed work by control heater
Skill；
4) heat exchanger is set between the high temperature bypass of RCO and desorption air-flow, is exported below in the high temperature gas flow of heat exchanger
A regulating valve and triple valves, which is arranged, can further heat in the heat using high temperature gas flow by air-flow is desorbed, to save
Energy consumption, setting triple valves can control high temperature gas flow (heat exchange cooling after) and enter desorption airflow pipeline to carry out mixed heat de- to improve
Attached wind-warm syndrome, or this strand of air-flow is oriented to smoke stack emission.
Preferably, being directed to the high temperature of RCO/RTO oxidizing chamber, high temperature can be set in the oxidizing chamber of RCO/RTO and bypass, if
Set the organic exhaust gas that high temperature bypass can come out in desorption organic concentration is excessively high or the calorific value of organic matter is excessively high causes oxygen
Change room temperature be higher than catalyst normally endure high temperature when, can by heat bypass draw one high temperature gas flow, by heat from
Oxidizing chamber takes away control oxidizing chamber temperature protection catalyst.
Preferably, the design installation thermostabilization furnace before heater；Because RCO/RTO outlet temperature is fluctuation, in order to
The variable air rate of active carbon is desorbed and stablizes desorption, needs heater to adjust desorption air temperature, after adding thermostabilization furnace, heater
Inlet temperature it is just stable, the computer heating control of heater is simpler, run it is also more stable.
Preferably, absorbent charcoal material can also be using the zeolitic material substitution of absorption organic matter.
Preferably, the catalyst that RCO of the invention is loaded is that the rare-earth oxidation type of state-of-the-art technology is urged using rare earth catalyst
Agent, preparation temperature are 750 DEG C, and catalyst can endure high temperature；Organic concentration in desorption air-flow, which is got higher, causes oxidizing chamber
Temperature increases, and according to thermal balance, needs to adjust the outlet temperature of RCO, waste heat is drained, and will result in going out for RCO in this way
Mouth temperature is more than the safe desorption temperature of active carbon, because oxidation catalyst can endure high temperature and can stablize going out for RCO
The mouth temperature difference, stablizes separating process, guarantees alternating temperature desorption and the hypoxemia separating process of cold wind is not added.
The invention has the advantages that:
1), active-carbon bed rational design not only makes the even flow field for guaranteeing adsorbent bed of the exhaust gas in absorbent charcoal adsorption tank, stream
Speed design rationally, will also guarantee that adsorption process (and the phase transition process for having the organic matter in exhaust gas to become liquid from gaseous state) generates
Heat can dissipate in time, not will lead to the phase transformation heat in the organic matter of activated carbon adsorption and constantly accumulate and cause active carbon
Bed heating causes danger.
The adsorption design of the Active Carbon in Organic of completely new active carbon absorption technology is set according to the crushing less than 1500Pa
Meter, exhaust gas are designed in active-carbon bed flow velocity according to the flow velocity of 0.6 meter per second, and flow Field Design of the exhaust gas in active-carbon bed guarantees
Exhaust gas is uniformly through active carbon；These parameters ensure that (and organic matter becomes liquid from gaseous state to charcoal adsorption process
Phase transition process) generate heat can dissipate, will not accumulate in active carbon cause it is active-carbon bed heat up cause danger.It is living simultaneously
Property charcoal adsorbent bed absorption inlet and outlet and desorption inlet and outlet have the pneumatic control valve of zero leakage, even if these valves are out of control
When (power loss, lose gas) can all be automatically closed, the active-carbon bed temperature for being equipped with temperature sensor detection active carbon, once discovery temperature
Degree is more than that dangerous temperature will automatically close all valves, if temperature, which steeply rises, can also open protection gas, allows and protects gas
Oxygen content, which is reduced, into adsorbent bed guarantees that active carbon will not catch fire.
2) it is desorbed using hypoxemia exhaust gas
The gas being discharged after being aoxidized using RCO/RTO as desorption air-flow, reduce desorption air-flow in oxygen content, avoid because
The burning that oxidation caused by coming into full contact with for organic matter and oxygen acutely occurs.
3) alternating temperature separating process
In the different phase of active carbon desorption, different for the concentration of organic matter in active carbon, the temperature that air-flow is desorbed is different
Sample, the more ultralow temperature desorptions of initial stage organic matter, gas flow temperature is desorbed less and steps up for later period organic matter, in different times using different
Desorption temperature maintain one it is relatively slowly effective stablize desorption process, the organic matter for being desorbed out remains metastable dense
Degree.Because the outlet temperature difference of RCO/RTO is small, RCO/RTO exit flow (for the desorption air-flow of Detachment Activity charcoal organic matter)
Temperature only has 70-75 degrees Celsius, and completely newly the safe temperature of process activity charcoal desorption is at 85-130 degrees Celsius, because passing through control
The heating of RCO exit flow may be implemented 85-130 degrees Celsius of alternating temperature desorption.
4) using high-quality heat-storing material (oxidation catalyst) as guarantee
It realizes 1) and key technology 2) is to control the core technology of the RCO/RTO inlet and outlet temperature difference, using good filling RCO/
The heat-storing material (RCO has oxidation catalyst) of RTO we can control RCO/RTO the inlet and outlet temperature difference it is Celsius in 10-15
The temperature of degree, the organic exhaust gas discharge after guaranteeing the oxidation of RCO/RTO oxidizing chamber does not need to realize cooling by the benefit wind of air-cooler,
New oxygen content will not be filled into desorption air-flow, active carbon there will not be fire hazard in desorption.
5) because the inlet and outlet temperature difference of RCO/RTO is small, low energy consumption for oxidation unit, runs more energy efficient.
6) RCO/RTO is regenerative oxidation device, and oxidative system starting can independent startup, system operation in valley electricity price
Expense further decreases.
7) oxidation unit operation is safer
The alternating temperature desorption technology of completely new technique obtains the organic concentration of desorption air-flow at 600-1000 milligrams or so, suitable
Concentration under exhaust gas collided caused by valve transfer explosion danger will not occur.
It is (3*3 millimeters small that 1000 millimeters of ceramic small hole barrier is had more than between the oxidizing chamber and bottom air duct of RCO/RTO
Hole), these apertures play the role of best back-fire relief, so high-concentration waste gas will not in the oxidizing chamber internal oxidition of RCO/RTO device
Open fire is caused to be transmitted to bottom low temperature space.
Oxidation furnaces warm-up cycle valve in preheating is opened, and stop valve one is closed, and RCO/RTO preheater stays in desorption
Realize that short-circuit cycle operation preheats oxidation unit under the driving of blower, warm-up cycle valve is closed when running desorption, stop valve
One opens, and the desorption exits and entrances valve for the charcoal canister for needing to be desorbed is opened, and absorption exits and entrances valve is closed, and desorption wind enters work
Property charcoal bed be desorbed, the high-concentration waste gas for being desorbed out enter RCO/RTO before fill into fresh air, the gas after oxidation one
Lease making regulating valve one is drained, another part be exactly be desorbed air-flow through the flow control of regulating valve two enter heater obtain be suitble to not
With desorption stage temperature desorption hot wind enter it is active-carbon bed.
Compared with old technology, the beneficial effects of the present invention are: desorption operating cost is low, desorption is safe and reliable, active carbon is de-
Attached effect is good, and active carbon service life greatly improves.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of active carbon adsorption desorption technique, which is characterized in that processing step is as follows:
1) industrial organic exhaust gas is by sequentially entering adsorption tower, absorption blower, activated carbon adsorption imported valve, work after filter
Property charcoal absorption outlet valve, active carbon desorption imported valve, active carbon desorption valve and protective gas valve, absorption wind
Machine, discharge pipe enter hot wind desorption；
2) desorption of the organic matter in active carbon is desorbed with hot wind, and the discarded small air quantity high concentration for being desorbed out is using RCO/
RTO oxidation unit is aoxidized, and is connected with new air-valve in the outlet of oxidation unit and is provided with and is mixed into fresh air cooling, fresh air conduct
The supply that the oxygen that oxidation process needs is added is filled into oxidation unit arrival end:
Oxidation unit can be high-performance RTO device and be also possible to RCO device, preferably at most uses RCO device, includes
RCO/RTO equipment, new air-valve fill into the oxygen, fire arrester, warm-up cycle valve of oxidation process needs for preheating RCO/RTO dress
It sets, the control of regulating valve one allows extra hot wind to discharge, heater realizes alternating temperature desorption, desorption blower；
Hypoxemia exhaust gas after being aoxidized using RCO/RTO is desorbed into charcoal canister to active-carbon bed；What desorption came out
High-concentration waste gas fills into fresh air before entering RCO/RTO oxidation unit, increases the oxygen that oxidation process needs；
3) desorption when low energy consumption the inlet and outlet temperature difference based on RCO/RTO device it is small and realizes, the temperature of control RCO/RTO device
Lower than the temperature that active carbon is desorbed safely, realize that carrying out alternating temperature to the organic matter of activated carbon adsorption is desorbed work by control heater
Skill；
4) heat exchanger is set between the high temperature bypass of RCO and desorption air-flow, is exported below in the high temperature gas flow of heat exchanger
A regulating valve and triple valves, which is arranged, can further heat in the heat using high temperature gas flow by air-flow is desorbed, to save
Energy consumption, setting triple valves can control high temperature gas flow (heat exchange cooling after) and enter desorption airflow pipeline to carry out mixed heat de- to improve
Attached wind-warm syndrome, or this strand of air-flow is oriented to smoke stack emission.
2. a kind of active carbon adsorption desorption technique according to claim 1, which is characterized in that the high temperature of RCO/RTO oxidizing chamber,
High temperature can be arranged in the oxidizing chamber of RCO/RTO to bypass, setting high temperature bypasses can be in the organic of the organic exhaust gas that desorption comes out
It, can when the excessively high temperature for causing oxidizing chamber of the calorific value of object excessive concentration or organic matter is higher than the high temperature that catalyst is normally endured
To draw one high temperature gas flow by heat bypass, heat is taken away into control oxidizing chamber temperature protection catalyst from oxidizing chamber.
3. a kind of active carbon adsorption desorption technique according to claim 1, which is characterized in that in order to which the variable air rate of active carbon is de-
Stable desorption is echoed, needs heater to adjust desorption air temperature, thermostabilization furnace is installed in design before heater；Because of RCO/RTO
Outlet temperature is fluctuation, and after adding thermostabilization furnace, the inlet temperature of heater is just stable, and the computer heating control of heater is simpler
It is single, it runs also more stable.
4. a kind of active carbon adsorption desorption technique according to claim 1, which is characterized in that absorbent charcoal material can also use
Adsorb the zeolitic material substitution of organic matter.
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| US5567229A (en) * | 1994-10-27 | 1996-10-22 | Durr Industries, Inc. | Rotary adsorption unit with regenerative thermal oxidizer |
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| CN107051033A (en) * | 2017-06-08 | 2017-08-18 | 山东大学 | A kind of organic waste gas treatment system and processing method |
| CN108079740A (en) * | 2017-12-26 | 2018-05-29 | 嘉园环保有限公司 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method |
| CN108443894A (en) * | 2018-04-04 | 2018-08-24 | 河北宏顺旺吉环保科技有限公司 | The method and system of catalysis burning processing VOCs exhaust gas |
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Application publication date: 20190409 |