CN106422651A - Inert gas protection system for industrial adsorber and operation control method thereof - Google Patents
Inert gas protection system for industrial adsorber and operation control method thereof Download PDFInfo
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- CN106422651A CN106422651A CN201611011657.3A CN201611011657A CN106422651A CN 106422651 A CN106422651 A CN 106422651A CN 201611011657 A CN201611011657 A CN 201611011657A CN 106422651 A CN106422651 A CN 106422651A
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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
Abstract
The invention discloses an inert gas protection system for an industrial adsorber and an operation control method thereof, belonging to the field of environmental protection safety. The inert gas protection system comprises a multi-chamber splitting combined adsorber, a nitrogen gas inlet, a temperature controller and a temperature detection element, wherein the multi-chamber splitting combined adsorber is provided with the nitrogen gas inlet; the temperature detection element is located in the multi-chamber splitting combined adsorber; the temperature detection element is in electric signal connection with the temperature controller; the temperature controller is used for controlling inert gas to enter and exit from an inert gas inlet; and pipelines communicated with an adsorption gas inlet, an adsorption exhausting hole, a desorption gas inlet and a desorption gas outlet of the multi-chamber splitting combined adsorber are correspondingly provided with an adsorption gas inlet control valve, an adsorption exhausting control valve, a desorption gas inlet control valve and a desorption exhausting control valve. According to the inert gas protection system, line connection can be changed on an existing high-temprature combustible adsorber and temperature detection and control devices are arranged and upgrading and improvement are directly carried out, so that the cost is saved.
Description
Technical field
The present invention relates to the field such as waste gas physics adsorption cleaning, heating power desorption and processing device security protection, more particularly, to
A kind of industrial adsorbers blanketing with inert gas system and its progress control method.
Background technology
, so that environmental pressure is increasing, people were more next to the attention rate of environment protection treating for increasingly serious haze in recent years
Higher.Low concentration, Wind Volume volatile organic waste gas are to be widely present in packages printing, rubber, spraying and electron trade at present
Refractory reason waste gas, because contaminant component is complicated, concentration is low, generally there is no recovery value, direct treatment technology difficulty is non-
Chang great.
Often carry out initial concentration using absorbing process, to improve pollutant levels in processing gas, reduction is processed in engineering
Tolerance, reduction machine utilization and operating cost.There is high temperature in adsorbent heating power desorption and regeneration process, and porous adsorbent (as
Grain charcoal, fiber charcoal etc.) material, after adsorption solvent, can be very easy to send out because porous catalytic effect reduces attachment solvent burning-point
Life is glowed, and causes equipment to damage, or even causes personal safety accident.Environmental Protection in China corporate boss will adopt following several ways：Adopt
With inert gas desorption, safe but relatively costly；Cooling uses, and exchanges safety allowance to sacrifice treatment effect for for cost；Or
Lowered the temperature although can ensure that safety using a large amount of Water spray when having an accident, but necessarily cause adsorbent all to scrap.
In order to avoid being similar to risk, Adsorption Concentration technique avoids higher boiling pollutant as far as possible, and desorption temperature is also as far as possible relatively
Low, thus cause feeling simply helpless always for the higher pollutant of boiling point.
Chinese utility model patent, publication number：CN201361513, publication date：2009.12.16, disclose a kind of runner
Formula organic exhaust gas adsorption and desorption apparatus, be provided with adsorbent layer including space in housing, housing, housing be provided with absorption into and out of
Gas port and desorption inlet, outlet, and connect the adsorbed gas passage of absorption inlet, outlet, connect desorption inlet, outlet desorption
Gas passage；One adsorbent layer is located at suction, on desorption gas passage, it includes a rotary shaft, and around the rotation of this rotary shaft, and inhales
Attached oxidant layer is divided at least two separate subregions along described rotation direction of principal axis；The two ends of adsorbent layer are led to desorption gas
A desorption air chamber shrouding is fixedly installed between road respectively, this desorption air chamber shrouding mid portion hollows out, forms blow vent, this ventilation
Mouth is docked with either partition all intervals of the adsorbent layer in rotation.The adsorbent layer of this device forms one during rotation
Continuous adsorption and desorption system, its adsorbent layer is in continuous more new state, and its adsorbance also improves several times, and operating efficiency obtains
To being greatly improved.It is disadvantageous in that：1) problem that this patent solves different from the present invention although same adsorption/desorption one
Body gasifying device, but the inflammable problem of adsorbent high temperature yet suffers from, and this patent does not pay close attention to high temperature protection problem；2) this absorption
Desorption integrated apparatus cannot solve as other runner adsorbent equipments that input cost is high, control that difficulty is big, fan section seals
The problems such as.
Chinese invention patent, publication number：104056527A, publication date：2014.09.24, disclose a kind of nitrogen desorption dress
Put.This device includes absorber, condenser, solvent barrel, separator tube, heater, desorption blower fan, nitrogen heater and nitrogen tube
Road, described separator tube is provided with nitrogen inlet, this separator tube be sequentially connected desorption blower fan, nitrogen heater, nitrogen pipeline and
Absorber, described nitrogen heater is provided with pipeline and connects to heater, is filled with conduction oil, institute in this heater
The absorber stated is sequentially connected condenser, solvent barrel.Original steam desorption and catalytic purification dress discharge hot blast are taken off by this invention
Attached, it is changed to nitrogen desorption, using the property of nitrogen non-combustible gas, overcome steam desorption and produce secondary waste water pollution and be catalyzed
Purifier easily makes the fire-hazardous shortcoming of activated carbon, in desorption process, nitrogen is heated to 160-180 DEG C, through being desorbed blower fan
It is sent to active carbon adsorber and activated carbon is carried out with desorption and regeneration, safe and reliable, after desorption, the condensed device of solvent and solvent barrel return
Receive, environmental protection.It is disadvantageous in that, 1) this patent is to do desorption gas using nitrogen, fundamentally avoids adsorbent combustion
The problem burnt is different from the problem that the present invention solves；2) if desorption gas recyclability is poor in this patent, it is desorbed using nitrogen
It is difficult to subsequent treatment process as catalysis, burning etc. couple；3), when there is no nitrogen gas source for plant area or battery limit (BL), need to increase nitrogen
Gas generating means, cost of investment increases.
Content of the invention
1. invent technical problem to be solved
Easily glow in processing procedure for existing Adsorption Concentration technology and cause sorbent material or even whole equipment
The problem of damage, the invention provides a kind of industrial adsorbers blanketing with inert gas system and its progress control method.Permissible
There is provided effective safeguard protection, the scope of application of extension Adsorption Concentration technology for Adsorption Concentration technique and technical equipment.
2. technical scheme
For solving the above problems, the technical scheme that the present invention provides is：
A kind of industrial adsorbers blanketing with inert gas system, enters including multicell separate assembling absorber and inert gas
Gas port, also includes temperature controller and detector unit, and multicell separate assembling absorber is provided with inert gas air inlet,
Detector unit is located in multicell separate assembling absorber, and detector unit is connected with temperature controller electric signal, temperature
Degree controller controls the inert gas turnover of inert gas air inlet.
This protection system can change connection on the inflammable absorber of existing high temperature, adds temperature detection and control
Device processed, connects circuit, improvement of directly being upgraded, and makes full use of existing resource, saves cost.
Preferably, multicell separate assembling absorber is additionally provided with absorption air inlet, absorption exhaust outlet, desorption air inlet and
Desorption exhaust outlet, the pipeline being connected with absorption air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet is correspondingly provided with
Absorption air intake control valve, absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve, for controlling absorber to give up
The entrance of gas, the discharge of pure air, desorption air inlet and desorption exhaust.
Preferably, the absorber quantity in multicell separate assembling absorber is more than 1.
It is equipped with detector unit in each absorber；Absorption air inlet, absorption exhaust are equipped with each absorber
Mouthful, desorption air inlet and desorption exhaust outlet, with absorption air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet, with suction
Attached air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet connect pipeline on be correspondingly provided with absorption air intake control valve,
Absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve, for controlling the waste gas of each absorber respectively
Entrance, the discharge of pure air, desorption air inlet and desorption exhaust.
Preferably, the quantity of absorption air intake control valve, the quantity of absorption gas exhausting valve, the quantity of desorption air intake control valve
All equal with the absorber quantity in multicell separate assembling absorber with the quantity of desorption gas exhausting valve.
Preferably, the pipeline connecting with inert gas air inlet is sequentially provided with hand-operated valve I, automatic valve and hand-operated valve II,
The pipeline that the pipe ends that bypass hand-operated valve is located are connected on the pipeline of hand-operated valve I side and bypass hand-operated valve side
On；Temperature controller is to automatic valve output control signal.
Wherein, hand-operated valve I, hand-operated valve II and bypass hand-operated valve III are hand-operated valve, are intended merely to be easy in description herein
Distinguish, the restriction of label has been carried out to them, there is no restriction effect to the mentality of designing of the present invention, as shown in Fig. 2 i.e. automatic valve
Before and after be respectively identical hand-operated valve, hand-operated valve is as bypass hand-operated valve III and inert gas protection system source of the gas even
Logical, it is connected with main nitrogen pipeline in Fig. 2.
Preferably, the pipeline of bypass hand-operated valve III side is connected with inert gas protection system source of the gas, described indifferent gas
Body protection system source of the gas is not more than 1kg/cm by device place battery limit (BL) sustainable supply, pressure2.
Inert gas is nitrogen, carbon dioxide, argon gas (Ar), helium (He) etc. herein, on the one hand avoids risk, pressure is big
In 1kg/cm2Be defined as pressure vessel, by design qualification and《Content regulation》Limit, management requires also strictly a lot, and
1kg/cm2Pressure for environmental protection equipment (being all generally atmospheric pressure device) enough, on the other hand, also reduce maintenance cost.
Preferably, it is filled with high-performance adsorbent material in absorber, quantity of sorbent is according to source of the gas parameter determination, high-performance
Sorbent material is particle charcoal, dust active carbon, fiber charcoal, zeolite etc..
A kind of progress control method of industrial adsorbers blanketing with inert gas system, its step is：
A, the conventional sense of valve are that hand-operated valve I and hand-operated valve II are in opening, and air-flow can pass through, automatic valve
No signal inputs, and maintains normally off, and bypass hand-operated valve III is closed, and air-flow cannot pass through；Absorption air inlet controls
Valve, absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve are in closed mode；
B, absorption
Open absorption air intake control valve, waste gas enters into the suction of multicell separate assembling absorber through absorption air intake control valve
In adnexa, the contaminant component in waste gas is retained by solid wall surface absorption in adsorbent surface and internal gutter, opens
Absorption gas exhausting valve, clean gas pass through bed, through absorption gas exhausting valve emptying；
C, desorption
After adsorption saturation, open desorption air intake control valve and desorption gas exhausting valve, be desorbed hot gas in a reverse direction,
Enter in the absorber of multicell separate assembling absorber through desorption air intake control valve and carry out blowback, be originally attached to adsorbent table
The contaminant molecule in face absorbs desorption gas heat energy to be increased, and when energy absorption is more than wall attraction, will shake off solid
Wall is back to gas phase again, passes through bed with air-flow, discharges subsequent processing by desorption gas exhausting valve；
D, cooling
Detector unit detects the temperature signal of multicell separate assembling absorber each absorber interior and is transferred to temperature
Degree controller, when in multicell separate assembling absorber, superhigh temperature in any one absorber temperature, temperature controller is sent out
While excess of export high temperature alarm, interlocked control automatic valve is opened, and inert gas is just persistently filled with absorber, lowers the temperature and replaces suction
Oxygen in adnexa, realizes fire extinguishing, cooling function；
The work that E, repeat step B and C are adsorbed and be desorbed, when superhigh temperature, repeat step D is lowered the temperature.
Preferably, when the absorber quantity of multicell separate assembling absorber is 1, according to A-E step to absorber
Carry out running control.
Preferably, when the absorber quantity of multicell separate assembling absorber is more than 1, carry out the work of step A,
During normal work, one of absorber carries out being desorbed work, and remaining absorber carries out adsorbing work, absorption and desorption work
Periodically switch over.
3. beneficial effect
The technical scheme being provided using the present invention, is had the advantages that：
(1) present invention detector unit detect multicell separate assembling absorber in temperature signal and be transferred to temperature
Degree controller, when multicell separate assembling absorber temperature is too high, temperature controller controls inert gas from inert gas
Air inlet enters in multicell separate assembling absorber, and inert gas is persistently filled with multicell separate assembling absorber, fall
Temperature simultaneously replaces oxygen in room, realizes fire extinguishing, cooling function；
(2) protection system of the present invention can change connection on the inflammable absorber of existing high temperature, adds temperature
Degree detection and control device, connect circuit, and improvement of directly being upgraded makes full use of existing resource, saves cost；
(3) present invention, on the basis of conventional security measures, proposes inert gas and automatically controls cooling fire extinguishing security system, can
With power-assisted key industry (printing, spraying etc.) exhaust gas treatment technology and equipment technology innovation, the event of disturbing residents up to standard for taking place frequently is looked for
To an effective solution route；
(4) when superhigh temperature in the absorber temperature of the present invention, while temperature controller sends superhigh temperature warning, to certainly
Dynamic valve transmitting telecommunication number, interlocked control automatic valve is opened, and inert gas is just persistently filled with absorber, lowers the temperature and replaces absorber
Middle oxygen, realizes fire extinguishing, cooling function；Safeguard protection can be provided for industrial absorber it is ensured that superhigh temperature in device
When, can effectively report to the police, nitrogen charging, anoxybiotic, cooling it is ensured that device normally runs, there is not security incident；
(5) inert gas pressure of the present invention is not more than 1kg/cm2, on the one hand while reaching fire extinguishing, cooling, will not
Cause device and loine pressure too high, thus reducing system maintenance cost；On the other hand, avoid risk, pressure is more than 1kg/
Cm2 is defined as pressure vessel, by design qualification and《Content regulation》Limit, management requires also strictly a lot, and 1kg/cm2
Pressure is for environmental protection equipment (being all generally atmospheric pressure device) enough；
(6), in the system of the present invention, the pipeline that connects with inert gas air inlet is sequentially provided with hand-operated valve I, automatic valve
With hand-operated valve II, bypass the pipe ends that hand-operated valve III is located and be connected on the pipeline of hand-operated valve I side and hand-operated valve II
On the pipeline of side, if automatic valve failure, manual-lock hand-operated valve I and hand-operated valve II, bypass hand-operated valve III remains turned-off, people
It is to be operated manually bypassing opening of hand-operated valve III according to temperature controller displays temperature registration, increase bypass hand-operated valve
III, when automatic valve breaks down or during failure, system still can manually start；
(7) (what i.e. detector unit, temperature controller and automatic valve were constituted is lazy for safety measure provided by the present invention
Property gas control loop) and security parameter remove can be used in the system described in absorber China and foreign countries, can also have at other can
Apply on the equipment that similar high temperature risk can occur, such as thermal accumulating incinerator (RTO), catalytic reactor (RCO) etc..
(8) inert gas of the present invention is normal temperature, and low temperature gas needs to freeze, and High Temperature Gas need to heat, so normal temperature gas
It is easy to get and economical, be capable of lowering the temperature, once absorber equipment is on fire, temperature inside is higher, generally several Baidu, is passed through normal temperature
Inert gas one side can replace oxygen, realizes fire extinguishing, and another aspect normal temperature inert gas (such as 25 degree) can share one
Partial heat, and carry this partial heat from system discharge, normal temperature inert gas is continually fed into, and just can achieve continued down；
(9) present invention is only used inert gas as high temperature protection, and gas usage is little, and investment is relatively low, and Technological adaptability is strong,
Carry out fire extinguishing cooling, adsorbent energy using the inert gas that the inert gas generator that industrial each factory natively has produces
Enough recyclings, safety cost is low；
(10) present invention is on the basis of not changing original desorption gas, incendive to the high temperature occurring in desorption process
Situation, is put out a fire using the non-flammable property of inert gas and is lowered the temperature it is not necessary to change the pipeline of original absorber, Neng Gouzhen
Existing absorber is directly transformed, cost of reducing investment outlay.
Brief description
Fig. 1 is a kind of present invention industrial adsorbers blanketing with inert gas system adsorption/desorption process chart；
Fig. 2 is a kind of present invention industrial adsorbers blanketing with inert gas system nitrogen protection process chart.
Label declaration in schematic diagram：
1～5, adsorb air intake control valve；6～10, it is desorbed gas exhausting valve；11～15, adsorb gas exhausting valve；16～
20th, it is desorbed air intake control valve；21st, multicell separate assembling absorber；22～26, detector unit；27th, temperature controller；
28th, automatic valve；29th, hand-operated valve I；30th, hand-operated valve II；31st, bypass hand-operated valve III.
Specific embodiment
For further appreciating that present disclosure, in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
In conjunction with Fig. 1-2, a kind of industrial adsorbers blanketing with inert gas system, including multicell separate assembling absorber 21
With inert gas air inlet, also include temperature controller 27 and detector unit, multicell separate assembling absorber 21 sets
There is inert gas air inlet, detector unit is located in multicell separate assembling absorber 21, detector unit and temperature
Controller 27 electric signal connects, and temperature controller 27 controls the inert gas turnover of inert gas air inlet.
Detector unit detect multicell separate assembling absorber 21 in temperature signal and be transferred to temperature controller
27, when multicell separate assembling absorber 21 temperature are too high, temperature controller 27 controls inert gas to enter from inert gas
Gas port enters in multicell separate assembling absorber 21, and inert gas is persistently filled with multicell separate assembling absorber 21,
Lower the temperature and replace oxygen in room, realize fire extinguishing, cooling function.
The protection system of the present embodiment can change connection on the inflammable absorber of existing high temperature, adds temperature
Detection and control device, connect circuit, and improvement of directly being upgraded makes full use of existing resource, saves cost.
Why it is limited in industrial adsorbers in the present embodiment, reason is as follows：1st, mainly show application, be used for
Process industrial waste gas, but if can apply on other small-sized absorber, belong in protection scope of the present invention；2nd, industry
The device volume of absorber is big, disposal ability is strong, safety requirements is high, and the harm that has an accident is big, and typically small-sized absorber totally will
Ask not high；3rd, nitrogen and other inert gas are difficult to obtain in itself, and industrially, many factories are equipped with corresponding gas and send out
Generating apparatus.
Embodiment 2
A kind of industrial adsorbers blanketing with inert gas system, including multicell separate assembling absorber 21 and inert gas
Air inlet, also includes temperature controller 27 and detector unit, and multicell separate assembling absorber 21 is provided with inert gas
Air inlet, detector unit is located in multicell separate assembling absorber 21, and detector unit is electric with temperature controller 27
Signal connects, and temperature controller 27 controls the inert gas turnover of inert gas air inlet.
Absorption air inlet, absorption exhaust outlet, desorption air inlet and desorption are additionally provided with multicell separate assembling absorber 21
Exhaust outlet, the pipeline being connected with absorption air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet is correspondingly provided with absorption
Air intake control valve, absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve；For controlling absorber waste gas
Entrance, the discharge of pure air, desorption air inlet and desorption exhaust.
Embodiment 3
The present embodiment is similar with embodiment 1-2, and wherein difference is, the suction in multicell separate assembling absorber 21
Adnexa quantity is more than or equal to 1；It is equipped with detector unit in each absorber；Each detector unit detection multicell divides
The temperature signal in each absorber in body combined type absorber 21 is simultaneously transferred to temperature controller 27, once multicell split group
When temperature in box-like any one absorber of absorber 21 is too high, temperature controller 27 controls inert gas to enter from inert gas
Gas port enters in the absorber of multicell separate assembling absorber 21, and inert gas is persistently filled with the absorption of multicell separate assembling
In device 21, lower the temperature and replace oxygen in room, realize fire extinguishing, cooling function.
Once the interior absorber temperature of multicell separate assembling absorber 21 is too high, as seen from Figure 2, indifferent gas is known from experience
It is passed in each absorber (including the not high absorber of those temperature), if it is too high only to allow inert gas be passed into temperature
In that absorber, although more saving inert gas theoretically, control also more accurate；But, for engineering reality, control
It is difficult in system accomplish, or control cost has to be significantly increased and (such as increases by five temperature controllers, including associated component, such as at least
Five groups of motor-driven valves, simultaneously the complexity of control circuit can increase, the increase of the components and parts such as auxiliary reclay, instruction, contactor
On the one hand make cost increase, another aspect assembly is more, and system reliability is lower), this amplitude controlling cost to increase is remote
Bigger than waste nitrogen is many；In addition although controlling accurate, but in practice, once high temperature alarm occurs it is possible to occur even
Lock, process effects (be other absorber temperature also occur too high), and all absorber nitrogen charging can ensure that (multicell divides equipment
Body combined type absorber 21) each part (being each absorber) in safe control condition.
The quantity of absorption air intake control valve, the quantity of absorption gas exhausting valve, the quantity of desorption air intake control valve and desorption
The quantity of gas exhausting valve is all equal with the absorber quantity in multicell separate assembling absorber 21.
It is equipped with detector unit in each absorber；Absorption air inlet, absorption exhaust are equipped with each absorber
Mouthful, desorption air inlet and desorption exhaust outlet, with absorption air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet, with suction
Attached air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet connect pipeline on be correspondingly provided with absorption air intake control valve,
Absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve；For controlling entering of each absorber waste gas respectively
Enter, the discharge of pure air, desorption air inlet and desorption exhaust.
Embodiment 4
The present embodiment is all similar with embodiment 1-3, and wherein difference is, the pipeline connecting with inert gas air inlet
On be sequentially provided with hand-operated valve I29, automatic valve 28 and hand-operated valve II30, the pipe ends that bypass hand-operated valve III31 is located connect respectively
Be connected on the pipeline of hand-operated valve I29 side and the pipeline of hand-operated valve II30 side on；Temperature controller 27 exports to automatic valve 28
Control signal.
Wherein, hand-operated valve I29, hand-operated valve II30 and bypass hand-operated valve III31 are hand-operated valve, are intended merely to describe herein
On be easy to distinguish, the restriction of label has been carried out to them, there is no restriction effect to the mentality of designing of the present invention, as shown in Fig. 2 i.e.
It is connected with identical hand-operated valve I29 and hand-operated valve II30 respectively before and after automatic valve 28, bypass hand-operated valve III31 is lazy with master
Property gas piping be connected.
If automatic valve 28 failure, manual-lock hand-operated valve I29 and hand-operated valve II30, bypass hand-operated valve III31 remains turned-off,
Artificially it is operated manually bypassing opening of hand-operated valve III31 according to temperature controller 27 displays temperature registration.
Embodiment 5
The present embodiment is all similar with embodiment 1-4, and wherein difference is, as shown in Fig. 2 bypass hand-operated valve III31
The side ducts connecting with hand-operated valve II30 are connected with inert gas protection system source of the gas, described inert gas protection system gas
Source is not more than 1kg/cm by device place battery limit (BL) sustainable supply, pressure2.
Inert gas is nitrogen, carbon dioxide etc. herein, on the one hand avoids risk, and pressure is more than being defined of 1kg/cm2
For pressure vessel, by design qualification and《Content regulation》Limit, management requires also strictly a lot, and the pressure of 1kg/cm2 is for ring
Guarantor's equipment (being all generally atmospheric pressure device) enough, on the other hand, does not result in device and loine pressure is too high, also reduce system
Maintenance cost.
Embodiment 6
The present embodiment is all similar with embodiment 1-4, and wherein difference is, in multicell separate assembling absorber 21
Absorber quantity is more than 1, is all filled with high-performance adsorbent material, high-performance adsorbent material is located in each absorber
On the bed of absorber, according to source of the gas parameter determination, high-performance adsorbent material is particle charcoal, dust active carbon, fiber to quantity of sorbent
Charcoal or zeolite etc..
Embodiment 7
In conjunction with Fig. 1-2, a kind of progress control method of industrial adsorbers blanketing with inert gas system, its step is：
A, check valve state
The conventional sense of valve is that hand-operated valve I29 and hand-operated valve II30 are in opening, and air-flow can pass through, automatically
Valve 28 no signal inputs, and maintains normally off, and bypass hand-operated valve III31 is closed, and air-flow cannot pass through；Absorption air inlet
Control valve, absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve are in closed mode；
B, absorption
Open absorption air intake control valve, waste gas enters into multicell separate assembling absorber 21 through absorption air intake control valve
In absorber, the contaminant component in waste gas is retained by solid wall surface absorption in adsorbent surface and internal gutter, beats
Open absorption gas exhausting valve, clean gas pass through bed, through absorption gas exhausting valve emptying；
C, desorption
After adsorption saturation, open desorption air intake control valve and desorption gas exhausting valve, be desorbed hot gas in a reverse direction,
Enter in the absorber of multicell separate assembling absorber 21 through desorption air intake control valve and carry out blowback, be originally attached to adsorbent
The contaminant molecule on surface absorbs desorption gas heat energy to be increased, and when energy absorption is more than wall attraction, will shake off solid
Body wall face is back to gas phase again, passes through bed (sorbing material of absorber is located on the bed of absorber) with air-flow, by being desorbed
Gas exhausting valve discharges subsequent processing；
Desorption is usually heating power desorption, and energy is passed to adsorbent by high-temperature gas, and the contaminant molecule on adsorbent obtains
Energy, molecular motion aggravates, and can depart from surface, realizes separating (desorption).Because air is easy to get, more use air is heat
Desorption gas, but for ignitable components it may be considered that hot nitrogen or steam are desorbed, to avoid potential risk of explosion.Desorption
The temperature of gas needs to be determined according to the pollution objects system processing, such as 80 degree of benzene boiling point, 80 degree of hot air temperature, and acetic acid is own
170 degree of ester boiling point, temperature is difficult to desorption less than 170 and gets off.
D, cooling
Detector unit detects the temperature signal of absorber of multicell separate assembling absorber 21 and is transferred to temperature
Controller 27, when in multicell separate assembling absorber 21, superhigh temperature in any one absorber temperature, temperature controller
27 send superhigh temperature report to the police while, to automatic valve 28 transmitting telecommunication number, interlocked control automatic valve 28 is opened, and inert gas is just held
Continue and be filled with absorber, lower the temperature and replace oxygen in absorber, realize fire extinguishing, cooling function；
Inert gas is normal temperature, and low temperature gas needs to freeze, and High Temperature Gas need to heat, so normal temperature gas is easy to get and economical,
It is capable of lowering the temperature, once equipment is on fire, temperature inside is higher, generally several Baidu, and being passed through normal temperature inert gas one side can
To replace oxygen, realize fire extinguishing, another aspect normal temperature inert gas (such as 25 degree) can share a part of heat, and carries this
Partial heat is discharged from system, and normal temperature inert gas is continually fed into, and just can achieve continued down.
The work that E, repeat step B and C are adsorbed and be desorbed, when superhigh temperature, repeat step D is lowered the temperature.
Embodiment 8
A kind of industrial adsorbers blanketing with inert gas system and any one of the embodiment 1-6 scheme phase of the present embodiment
With a kind of progress control method of industrial adsorbers blanketing with inert gas system of the present embodiment is similar to Example 7, wherein
Difference is, when the absorber quantity of multicell separate assembling absorber 21 is 1, according to A-E step to absorber
Carry out running control, realize Batch Adsorption and desorption.
Embodiment 9
A kind of industrial adsorbers blanketing with inert gas system and any one of the embodiment 1-6 scheme phase of the present embodiment
With a kind of progress control method of industrial adsorbers blanketing with inert gas system of the present embodiment is similar to Example 7, wherein
Difference is, when the absorber quantity of multicell separate assembling absorber 21 is more than 1, after carrying out the work of step A,
In normal work, one of absorber carries out being desorbed work, and remaining absorber carries out adsorbing work, absorption and desorption work
Make periodically to switch over, i.e. absorption and desorption are persistently carried out.
Embodiment 10
In conjunction with Fig. 1 and Fig. 2, a kind of industrial adsorbers blanketing with inert gas system, detector unit is arranged on absorption
On the route that the top of device or air-flow have to pass through, for detecting temperature in absorber；Hot gas expands and lightens and can flow toward top
Dynamic, absorber top is more sensitive for temperature.Absorption air inlet and desorption exhaust outlet are positioned at the top of absorber, absorption exhaust
Mouth and desorption air inlet are positioned at the bottom of absorber.
Embodiment 11
A kind of industrial adsorbers blanketing with inert gas system of the present embodiment, wherein multicell separate assembling absorber 21
Absorber quantity be five, in Fig. 1 and 2, be respectively designated as 1#, 2#, 3#, 4# and 5#, with this corresponding suction of five absorbers
Attached air intake control valve, in Fig. 1 and 2, is respectively designated as 1,2,3,4 and 5, is all connected with gas inlet pipeline；Adsorb with this five
Device corresponding absorption gas exhausting valve, in Fig. 1 and 2, is respectively designated as 11,12,13,14 and 15, all with absorption after clean gas
Body discharge tube connects；With this corresponding desorption air intake control valve of five absorbers, in Fig. 1 and 2, be respectively designated as 16,17,
18th, 19 and 20, all connect with desorption inlet pipe road；With this corresponding desorption gas exhausting valve of five absorbers, in Fig. 1 and 2, divide
It is not denoted as 6,7,8,9 and 10, all connect with desorption exhaust pipe road；With this corresponding detector unit of five absorbers,
Fig. 1 and 2, is respectively designated as 22,23,24,25 and 26, all transmits temperature signal to temperature controller 27.
A kind of progress control method of industrial adsorbers blanketing with inert gas system, its step is：
A, check valve state
The conventional sense of valve is that hand-operated valve I29 and hand-operated valve II30 are in opening, and air-flow can pass through, automatically
Valve 28 no signal inputs, and maintains normally off, and bypass hand-operated valve 31 is closed, and air-flow cannot pass through；Adsorb into gas control
Valve (in corresponding Fig. 1 and Fig. 21,2,3,4 and 5) processed, absorption gas exhausting valve (11,12,13,14 and in corresponding Fig. 1 and Fig. 2
15), desorption air intake control valve (corresponding Fig. 1 and Fig. 2 in 16,17,18,19 and 20) and desorption gas exhausting valve (corresponding Fig. 1 with
In Fig. 26,7,8,9 and 10) it is in closed mode；
B, absorption
Open absorption air intake control valve (in corresponding Fig. 1 and Fig. 21,2,3,4 and 5), waste gas is through adsorbing air intake control valve
(in corresponding Fig. 1 and Fig. 21,2,3,4 and 5) enter into absorber (corresponding Fig. 1 and Fig. 2 of multicell separate assembling absorber 21
In 1#, 2#, 3#, 4# and 5#) in, the contaminant component in waste gas is inhaled by solid wall surface in adsorbent surface and internal gutter
Attached retain, open absorption gas exhausting valve (corresponding Fig. 1 and Fig. 2 in 11,12,13,14 and 15), clean gas pass through bed
Layer, through absorption gas exhausting valve (in corresponding Fig. 1 and Fig. 2 11,12,13,14 and 15) emptying；
C, desorption
After adsorption saturation, open desorption air intake control valve (in corresponding Fig. 1 and Fig. 2 16,17,18,19 and 20) and take off
Attached gas exhausting valve (in corresponding Fig. 1 and Fig. 26,7,8,9 and 10), desorption hot gas in a reverse direction, controls through desorption air inlet
Valve (in corresponding Fig. 1 and Fig. 2 16,17,18,19 and 20), enters the absorber (corresponding diagram of multicell separate assembling absorber 21
1#, 2#, 3#, 4# and 5# in 1 and Fig. 2) in carry out blowback, be originally attached to adsorbent surface contaminant molecule absorb desorption
Gas heat energy increases, and when energy absorption is more than wall attraction, will shake off solid wall surface and again be back to gas phase, with air-flow
Through bed, subsequent processing is discharged by desorption gas exhausting valve (in corresponding Fig. 1 and Fig. 26,7,8,9 and 10)；
D, cooling
Detector unit (in corresponding Fig. 1 and Fig. 2 22,23,24,25 and 26) detection multicell separate assembling absorber
21 temperature signal of absorber (1#, 2#, 3#, 4# and 5# in corresponding Fig. 1 and Fig. 2) is simultaneously transferred to temperature controller 27, when
In multicell separate assembling absorber 21, any one absorber (1#, 2#, 3#, 4# and 5# in corresponding Fig. 1 and Fig. 2) temperature goes out
During existing superhigh temperature, while temperature controller 27 sends superhigh temperature warning, to automatic valve 28 transmitting telecommunication number, interlocked control is automatic
Valve 28 is opened, and inert gas is just persistently filled with absorber, lower the temperature and replace absorber (1# in corresponding Fig. 1 and Fig. 2,2#,
3#, 4# and 5#) in oxygen, realize fire extinguishing, cooling function；
Inert gas is normal temperature, and low temperature gas needs to freeze, and High Temperature Gas need to heat, so normal temperature gas is easy to get and economical,
It is capable of lowering the temperature, once equipment is on fire, temperature inside is higher, generally several Baidu, and being passed through normal temperature inert gas one side can
To replace oxygen, realize fire extinguishing, another aspect normal temperature inert gas (such as 25 degree) can share a part of heat, and carries this
Partial heat is discharged from system, and normal temperature inert gas is continually fed into, and just can achieve continued down.
The work that E, repeat step B and C are adsorbed and be desorbed, when superhigh temperature, repeat step D is lowered the temperature；
During normal work, four room absorption, a room desorption, periodically switch over.
Claims (10)
1. a kind of industrial adsorbers blanketing with inert gas system, including multicell separate assembling absorber (21) and inert gas
Air inlet it is characterised in that also including temperature controller (27) and detector unit, multicell separate assembling absorber (21)
It is provided with inert gas air inlet, detector unit is located in multicell separate assembling absorber (21), detector unit
It is connected with temperature controller (27) electric signal, temperature controller (27) controls the inert gas turnover of inert gas air inlet.
2. a kind of industrial adsorbers blanketing with inert gas system according to claim 1 is it is characterised in that multicell split
Be additionally provided with combined type absorber (21) absorption air inlet, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet, with adsorb into
It is correspondingly provided with absorption air intake control valve, absorption on the pipeline that gas port, absorption exhaust outlet, desorption air inlet and desorption exhaust outlet connect
Gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve.
3. a kind of industrial adsorbers blanketing with inert gas system according to claim 1 is it is characterised in that multicell split
Absorber quantity in combined type absorber (21) is more than 1.
4. a kind of industrial adsorbers blanketing with inert gas system according to claim 3 is it is characterised in that adsorb air inlet
The quantity of control valve, the quantity of the quantity of absorption gas exhausting valve, the quantity of desorption air intake control valve and desorption gas exhausting valve
All equal with the absorber quantity in multicell separate assembling absorber (21).
5. a kind of industrial adsorbers blanketing with inert gas system according to claim 1 is it is characterised in that and indifferent gas
It is sequentially provided with hand-operated valve I (29), automatic valve (28) and hand-operated valve II (30) on the pipeline of body air inlet connection, bypass hand-operated valve
The pipe ends that III (31) is located are connected on the pipeline of hand-operated valve I (29) side and bypass hand-operated valve III (31) side
Pipeline on；Temperature controller (27) is to automatic valve (28) output control signal.
6. a kind of industrial adsorbers blanketing with inert gas system according to claim 5 is it is characterised in that bypass is manual
The pipeline of valve III (31) side is connected with inert gas protection system source of the gas, and described inert gas protection system source of the gas is by filling
Put place battery limit (BL) sustainable supply, pressure is not more than 1kg/cm2.
7. a kind of industrial adsorbers blanketing with inert gas system according to claim 3 is it is characterised in that in absorber
It is filled with high-performance adsorbent material, high-performance adsorbent material is particle charcoal, dust active carbon, fiber charcoal or zeolite.
8. the progress control method of a kind of industrial adsorbers blanketing with inert gas system according to claim 1, it is special
Levy and be：
A, check valve state
The conventional sense of valve is that hand-operated valve I (29) and hand-operated valve II (30) are in opening, and air-flow can pass through, automatically
Valve (28) no signal inputs, and maintains normally off, and bypass hand-operated valve III (31) is closed, and air-flow cannot pass through；Absorption
Air intake control valve, absorption gas exhausting valve, desorption air intake control valve and desorption gas exhausting valve are in closed mode；
B, absorption
Open absorption air intake control valve, waste gas enters into the suction of multicell separate assembling absorber (21) through absorption air intake control valve
In adnexa, the contaminant component in waste gas is retained by solid wall surface absorption in adsorbent surface and internal gutter, opens
Absorption gas exhausting valve, clean gas pass through bed, through absorption gas exhausting valve emptying；
C, desorption
After adsorption saturation, open desorption air intake control valve and desorption gas exhausting valve, in a reverse direction, warp is de- for desorption hot gas
Attached air intake control valve enters in the absorber of multicell separate assembling absorber (21) and carries out blowback, is originally attached to adsorbent table
The contaminant molecule in face absorbs desorption gas heat energy to be increased, and when energy absorption is more than wall attraction, will shake off solid
Wall is back to gas phase again, passes through bed with air-flow, discharges subsequent processing by desorption gas exhausting valve；
D, cooling
Detector unit detects the temperature signal of absorber of multicell separate assembling absorber (21) and is transferred to temperature control
Device (27) processed, when in multicell separate assembling absorber (21), superhigh temperature in any one absorber temperature, temperature control
While device (27) sends superhigh temperature warning, interlocked control automatic valve (28) is opened, and inert gas is just persistently filled with absorber,
Lower the temperature and replace oxygen in absorber, realize fire extinguishing, cooling function；
The work that E, repeat step B and C are adsorbed and be desorbed, when superhigh temperature, repeat step D is lowered the temperature.
9. the progress control method of a kind of industrial adsorbers blanketing with inert gas system according to claim 8, it is special
Levy and be, when the absorber quantity of multicell separate assembling absorber (21) is 1, according to A-E step, absorber is carried out
Run and control.
10. the progress control method of a kind of industrial adsorbers blanketing with inert gas system according to claim 8, it is special
Levy and be, when the absorber quantity of multicell separate assembling absorber (21) is more than 1, carry out the work of step A, normal
During work, one of absorber carries out being desorbed work, and remaining absorber carries out adsorbing work, absorption and desorption work period
Property switches over.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579324A (en) * | 2018-07-11 | 2018-09-28 | 湖南科技大学 | It is a kind of to recycle Br in brominated flue gas2Device and method |
| CN113727773A (en) * | 2019-04-18 | 2021-11-30 | 克莱姆沃克斯有限公司 | High flux direct air capture device for capturing CO2 from air and method of operation thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH609580A5 (en) * | 1975-11-05 | 1979-03-15 | Ceag Filter Entstaubung | |
| JP2006226630A (en) * | 2005-02-18 | 2006-08-31 | Okura Electric Co Ltd | Waste incineration device |
| CN101161309A (en) * | 2007-11-09 | 2008-04-16 | 北京海安高科消防技术有限公司 | Combined imputation type nitrogen gas fire extinguisher system apparatus |
| CN101301558A (en) * | 2007-05-08 | 2008-11-12 | 北京云辰天环保科技有限公司 | Activated carbon fiber organic solvent recovery novel technique using nitrogen as desorption medium |
| CN101829473A (en) * | 2010-05-18 | 2010-09-15 | 沈阳石蜡化工有限公司 | Process for purifying organic waste gas and reclaiming organic solvent |
| CN202460411U (en) * | 2012-02-28 | 2012-10-03 | 武汉旭日华科技发展有限公司 | Protection system for preventing spontaneous combustion of adsorption tank |
| CN102927579A (en) * | 2012-11-09 | 2013-02-13 | 广东电网公司电力科学研究院 | Coal pulverizing system |
| CN205127664U (en) * | 2015-09-08 | 2016-04-06 | 江苏三中奇铭环保设备有限公司 | Fire -retardant system of nitrogen gas |
| CN105749695A (en) * | 2016-04-22 | 2016-07-13 | 南京大学环境规划设计研究院有限公司 | Low concentration, large wind volume and high odor waste gas concentration energization equipment and technology thereof |
| CN206168165U (en) * | 2016-11-17 | 2017-05-17 | 南京大学环境规划设计研究院有限公司 | Industry is inert gas protection system for adsorber |
-
2016
- 2016-11-17 CN CN201611011657.3A patent/CN106422651A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH609580A5 (en) * | 1975-11-05 | 1979-03-15 | Ceag Filter Entstaubung | |
| JP2006226630A (en) * | 2005-02-18 | 2006-08-31 | Okura Electric Co Ltd | Waste incineration device |
| CN101301558A (en) * | 2007-05-08 | 2008-11-12 | 北京云辰天环保科技有限公司 | Activated carbon fiber organic solvent recovery novel technique using nitrogen as desorption medium |
| CN101161309A (en) * | 2007-11-09 | 2008-04-16 | 北京海安高科消防技术有限公司 | Combined imputation type nitrogen gas fire extinguisher system apparatus |
| CN101829473A (en) * | 2010-05-18 | 2010-09-15 | 沈阳石蜡化工有限公司 | Process for purifying organic waste gas and reclaiming organic solvent |
| CN202460411U (en) * | 2012-02-28 | 2012-10-03 | 武汉旭日华科技发展有限公司 | Protection system for preventing spontaneous combustion of adsorption tank |
| CN102927579A (en) * | 2012-11-09 | 2013-02-13 | 广东电网公司电力科学研究院 | Coal pulverizing system |
| CN205127664U (en) * | 2015-09-08 | 2016-04-06 | 江苏三中奇铭环保设备有限公司 | Fire -retardant system of nitrogen gas |
| CN105749695A (en) * | 2016-04-22 | 2016-07-13 | 南京大学环境规划设计研究院有限公司 | Low concentration, large wind volume and high odor waste gas concentration energization equipment and technology thereof |
| CN206168165U (en) * | 2016-11-17 | 2017-05-17 | 南京大学环境规划设计研究院有限公司 | Industry is inert gas protection system for adsorber |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579324A (en) * | 2018-07-11 | 2018-09-28 | 湖南科技大学 | It is a kind of to recycle Br in brominated flue gas2Device and method |
| CN108579324B (en) * | 2018-07-11 | 2023-05-09 | 遵义师范学院 | Br in recovered bromine-containing flue gas 2 Apparatus and method of (a) |
| CN113727773A (en) * | 2019-04-18 | 2021-11-30 | 克莱姆沃克斯有限公司 | High flux direct air capture device for capturing CO2 from air and method of operation thereof |
| US11944932B2 (en) | 2019-04-18 | 2024-04-02 | Climeworks Ag | High throughput direct air capture device and method of its operation |
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Application publication date: 20170222 |