CN207153398U - A kind of charcoal absorption gas recovery system for oil - Google Patents
A kind of charcoal absorption gas recovery system for oil Download PDFInfo
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- CN207153398U CN207153398U CN201721090645.4U CN201721090645U CN207153398U CN 207153398 U CN207153398 U CN 207153398U CN 201721090645 U CN201721090645 U CN 201721090645U CN 207153398 U CN207153398 U CN 207153398U
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Abstract
A kind of charcoal absorption gas recovery system for oil, it is made up of charge air-cooling system, oil gas adsorption system, absorption tower system and PLC；Charge air-cooling system is connected with oil gas adsorption system, and oil gas adsorption system is connected with absorption tower system, and absorption tower system joined top has pipeline and the connecting line of charge air-cooling system, oil gas adsorption system to be connected；Charge air-cooling system is made up of inlet gas concentration monitor, intake air temperature monitor, intake valve, air inlet bypass valve, refrigeration machine and pipeline；Inlet gas concentration monitor, intake air temperature monitor, intake valve are sequentially arranged on main line, and air inlet bypass valve and refrigeration machine are parallel with intake valve；Oil gas adsorption system is made up of two sets of absorption canister assemblies, and often set absorption canister assembly includes temperature monitor, inlet valve, desorption selector valve, drain valve, blow down valve in adsorption tanks, tank；Upper end connection drain valve and blow down valve are adsorbed, bottom connects inlet valve and desorbs selector valve, temperature monitor in middle and upper part connection tank.
Description
Technical field
A kind of charcoal absorption gas recovery system for oil is the utility model is related to, belongs to petrochemical industry.
Background technology
Oil and products thereof is the mix products of a variety of hydrocarbons, and light component therein has very strong volatility.
In the exploitation of oil, refining, accumulating, sale and application process, inevitable that the liquid composition gas that a part is lighter
Change, be discharged into air, so as to cause the waste of resource, the pollution of environment and serious potential safety hazard.
In order to reduce the wasting of resources, the potential safety hazard that VOCs is brought is reduced, and the environmental pollution in face of being on the rise is asked
Topic, petrochemical industry Petrochemical Enterprises more safely, effectively reduce VOCs discharges, turn into enterprise in making great efforts to reduce VOCs discharge process
The most important thing of safety in production.
For VOCs exhaust gas treatment technologies, destruction method and the major class of absorption process two can be divided into.VOCs, which destroys method, to be included：Directly fire
Burning method, flame combustion method, Production by Catalytic Combustion Process, regenerative oxidation method, the methods of.VOCs absorption methods include：Absorption method, absorption process are cold
Solidifying method, the methods of membrane separation process.
Under normal circumstances, when refinery waste gas VOCs concentration is relatively low, burning (oxidation) is preferably used to destroy facture；When VOCs is dense
When spending larger, absorption is preferably used, is absorbed, is condensed, UF membrane and combinations thereof technique recycling.
Wherein, VOCs absorption methods change strong adaptability to the gentle amount of concentration, and VOCs removal efficiency is high, should in VOCs processing
With the most extensive.
In VOCs absorption methods, the main active charcoal, silica gel etc. for adsorbent.Activated carbon is as adsorbent because it is adsorbed
Amount is big, it is good to save effect, is most widely used；For silica gel absorber because its hydrophily, adsorbance are small, only day this application is more；
And other carbon molecular sieves, vulcanize rubber, attapulgite clay etc., be also difficult in the application as adsorbent and acticarbon
Form competition.
Activated carbon is structurally characterized in that with nonpolar surface, is hydrophobicity and organophilic adsorbent, thus
Adsorption recovery especially suitable for organic matter in gas or liquid mixture.Activated carbon has following 3 advantages as adsorbent：The
One, it is uniquely need not strictly to remove the industrial adsorbents of moisture for completing purification separation and purification process；Second, it has
There is inner surface as big as possible, every gram of activated carbon interior free surface product is up to 2000 square meters, therefore can be inhaled than other adsorbents
Receive more nonpolar organic molecules；3rd, binding molecule desorption is easier to, generally use vacuum desorption method, absorption regeneration
When energy consumption also than relatively low.
There is also following characteristics simultaneously as adsorbent for activated carbon：(1) saturated extent of adsorption (adsorption rate) of activated carbon is with suction
The increase of attached operation temperature and reduce more, saturated oils gas adsorption rate of the fresh activity charcoal at 20 DEG C is 34%, is dropped at 30 DEG C
30%.Temperature is lower, and the adsorption rate of activated carbon is stronger.(2) charcoal adsorption process is regarded as adiabatic adsorption, for high concentration
Oil gas adsorbing separation, heat of adsorption is clearly.Absorption fuel factor can reduce activated carbon activated adoption surface area, so as to reduce activity
The adsorption capacity of charcoal and the service life for influenceing activated carbon.More seriously, certain common foreign brand name active carbon from coal and oil
330 DEG C of the heating temp of gas, ignition temperature are 380 DEG C, the sharp increase of layer of charcoal temperature, may bring the danger of involuntary ignition.
In existing charcoal absorption oil vapor treatment system, for pending oil gas, without pretreatment, this is allowed for
When oil gas enters adsorption tanks (one) due to oil gas intake air temperature it is too high, extra heat is brought into absorbent charcoal adsorption tank so that
Absorbent charcoal adsorption tank temperature rises rapidly；(2) because gas concentration fluctuation exceeds normal range (NR), charcoal absorption heating accelerates,
Temperature raises suddenly.Temperature exceedes secure setting in absorbent charcoal adsorption tank so that 1. charcoal absorption efficiency reduces, and 2. discharges
Gas may exceeded, the 3. serious spontaneous combustion that can also cause activated carbon, so as to cause serious security incident.
Utility model content
In view of the shortcomings of the prior art, the technical solution adopted in the utility model is：A kind of charcoal absorption petroleum vapor recovery system
System, is made up of charge air-cooling system, oil gas adsorption system, absorption tower system and PLC.The inlet gas cooling system
System is connected with oil gas adsorption system, and oil gas adsorption system is connected with absorption tower system, and absorption tower system joined top has pipe
Road is connected with the connecting line of charge air-cooling system, oil gas adsorption system；PLC be responsible for charge air-cooling system,
The device control of oil gas adsorption system, absorption tower system.
PLC control monitoring oil gas intake air temperature and concentration, and each absorbent charcoal adsorption tank tank in real time
Interior operating temperature, according to different operating modes, the inlet gas cooling bypass of control oil gas actively reduces oil gas intake air temperature, and increase oil gas enters
Mouth concentration elasticity.Oil gas intake air temperature is reduced, charcoal canister temperature is reduced using the oil gas after cooling, activated carbon is operated in peace
Full low-temperature space, effectively control spontaneous combustion risk caused by absorption heating；And relatively low operating temperature is advantageous to improve activated carbon
Adsorption rate, so as to increase the adsorption capacity of charcoal canister, ensure high concentration fluctuate inlet air conditions under emission compliance.
The charge air-cooling system is by inlet gas concentration monitor, intake air temperature monitor, intake valve, air inlet bypass valve, system
Cold and pipeline composition；The inlet gas concentration monitor, intake air temperature monitor, intake valve are sequentially arranged on main line, with
Intake valve is parallel with air inlet bypass valve and refrigeration machine.
The oil gas adsorption system is made up of two sets of absorption canister assemblies, and often set absorption canister assembly includes temperature in adsorption tanks, tank
Spend monitor, inlet valve, desorption selector valve, drain valve, blow down valve；The absorption upper end connection drain valve and blow down valve, bottom
End connection inlet valve and desorption selector valve, middle and upper part connect temperature monitor in tank.
The absorption tower system is made up of vavuum pump, absorption tower, oil-feed pump, scavenge oil pump and pipeline.
Two adsorption tanks alternating sorbents, that is, when adsorption tanks A is in adsorbed state, adsorption tanks B is in reproduced state,
Using alternating sorbent, the continuous operation of package unit is realized in regeneration.
State switching is adsorbed with adsorption tanks A, exemplified by adsorption tanks B regeneration.First, oil gas passes through inlet gas concentration monitoring and air inlet
Temperature monitoring, when PLC monitors inlet gas concentration not less than elastic setting value, while intake air temperature also not less than
During inlet air temperature set value, PLC control intake valve is opened, and air inlet bypass valve remains off, refrigeration machine
Remain shut off state.A adsorption tanks inlet valve is opened, and B adsorption tanks inlet valve is closed, and simultaneously closes off A tanks parsing selector valve and A tanks blow
Valve is swept, drain valve is kept it turned on, and oil gas enters adsorption tanks A, and adsorption tanks A starts to absorb oil gas.Meanwhile A tanks temperature monitor is real
When monitor A tank temperature, when temperature is not less than adsorption temp secure setting in adsorption tanks, PLC control into
Gas bypass valve still remains off, and refrigeration machine remains shut off state.When adsorption tanks A is in adsorbed state, adsorption tanks B exists
After the oil gas absorption for completing a upper circulation, in reproduced state.Now, B tanks drain valve and B tanks blow down valve are closed, and treat that B tanks desorb
After selector valve is opened, vavuum pump low-frequency start starts to vacuumize, and the oil gas in adsorption tanks B is delivered into absorption tower, at the same time, entered
Oil pump and scavenge oil pump are opened, and are sprayed and are started in absorption tower, the oil gas in adsorption tanks B is by Poor oil absorbing.Pressure drop in tank B to be adsorbed
It is low arrive setting value certain time length after, B tanks blow down valve open, introduce cleaned air more hydro carbons is desorbed from charcoal bed.
After adsorption tanks B regeneration endings, B tanks drain valve is opened, and it is recovered normal pressure, simultaneously closes off oil-feed pump and scavenge oil pump, stops spray
Leaching, scavenge oil pump start in good time automatically, keep absorbing tower liquid-level balance, are maintained under safe range.Hereafter adsorption tanks B be in etc.
State is treated, after adsorption tanks A adsorption saturations, with its switching state.
PLC passes through temperature monitor A, tank in inlet gas concentration monitor, intake air temperature monitor and tank
Interior temperature monitor B, whole extension concentration elasticity charcoal absorption oil gas recovery processing system is monitored in real time.Work as PLC
When programmable controller monitors situations below：1) inlet gas concentration exceedes elastic setting value；2) intake air temperature exceedes intake air temperature
Setting value；3) adsorption tanks A or adsorption tanks B adsorption tanks temperature in adsorbed state exceedes adsorption temp secure setting.The above three
Kind of situation is considered as abnormality, three kinds of states, and one of which state individually occurs, or two kinds so that three kinds of states occur simultaneously
When, PLC opens air inlet bypass valve at once, starts refrigeration machine, simultaneously closes off intake valve so that oil gas air inlet passes through
After crossing cryocooled cooling, by intake air temperature control in the range of higher than 5 DEG C, less than 15 DEG C optimum working temperatures.Then, will
Oil gas after cooling is sent into adsorption tanks A or adsorption tanks B and carries out absorption processing, until inlet gas concentration, intake air temperature, and cooling tank temperature
When degree all returns to normal condition by abnormality, intake valve is opened in PLC control, is closed refrigeration machine and is entered
Gas bypass valve.
The utility model oil gas high concentration fluctuation in the case of, effectively by oil gas air inlet control higher than 5 DEG C, less than 15
In the range of DEG C optimum working temperature, processing elasticity of the whole system to gas concentration is improved：
1)：For the oil gas more than inlet air temperature set value, active cooling, avoid the too high oil gas of temperature and enter activity
Charcoal adsorption tanks, and extra heat is brought into tank, so as to cause absorbent charcoal adsorption tank temperature anomaly to raise, influence activated carbon
Absorptivity, while avoid potential safety hazard caused by temperature anomaly rise.
2)：Exceed the oil gas of setting value for concentration, the oil gas after cooling enters absorbent charcoal adsorption tank, effectively reduces suction
Temperature in attached tank, while charcoal absorption rate is improved, it is suppressed that heat of adsorption abruptly increase caused by gas concentration raises suddenly, carry
The high security of charcoal absorption operation.
3)：Temperature in absorbent charcoal adsorption tank is monitored, when temperature increases to over secure setting in tank, oil gas is entered into air cooling
But inject afterwards in tank, can effectively reduce temperature in absorbent charcoal adsorption tank, while charcoal absorption rate is improved, improve activity
The security of charcoal adsorption operations.
4)：Because gas inlet branch road refrigeration machine is only used for doing oil gas air inlet 5-15 DEG C of temperature target cooling, refrigeration
Acc power is little, and compared with conventional activated carbon oil gas adsorption recovery system, increase investment is few.But because increase active gas drop
Warm means so that activated carbon gas recovery system for oil performance be improved significantly.Concentration resilient expansion charcoal absorption petroleum vapor recovery
System, while security of system is improved, also improve treatment effeciency of the system to oil gas, the scope of application of system is also more
Extensively.
Brief description of the drawings
Fig. 1 is a kind of charcoal absorption gas recovery system for oil structural representation that the utility model embodiment provides；
Reference：
100th, charge air-cooling system, 200, oil gas adsorption system, 300, absorption tower system, 400, PLC,
1st, adsorption tanks A, 2, adsorption tanks B, 3, temperature monitor A in tank, 4, temperature monitor B in tank, 5, inlet valve A, 6, inlet valve B,
7th, selector valve A is desorbed, 8, desorption selector valve B, 9, drain valve A, 10, drain valve B, 11, blow down valve A, 12, blow down valve B, 13, true
Empty pump, 14, absorption tower, 15, oil-feed pump, 16, scavenge oil pump, 17, intake valve, 18, air inlet bypass valve, 19, refrigeration machine, 20, air inlet
Concentration monitoring device, 21, intake air temperature monitor.
Embodiment
Technical solutions of the utility model are described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of charcoal absorption gas recovery system for oil is by charge air-cooling system 100, oil gas adsorption system
200th, absorption tower system 300 and PLC 400 form.The charge air-cooling system 100 and oil gas adsorption system
200 be connected, oil gas adsorption system 200 is connected with absorption tower system 300, and the joined top of absorption tower system 300 have pipeline and
Charge air-cooling system 100, the connecting line of oil gas adsorption system 200 are connected；PLC 400 is responsible for inlet gas cooling
The device control of system 100, oil gas adsorption system 200, absorption tower system 300.
The charge air-cooling system 100 is by inlet gas concentration monitor 20, intake air temperature monitor 21, intake valve 17, air inlet
Bypass valve 18, refrigeration machine 19 and pipeline composition；The inlet gas concentration monitor 20, intake air temperature monitor 21, intake valve 17 according to
It is secondary to be arranged on main line, it is parallel with air inlet bypass valve 18 and refrigeration machine 19 with intake valve 17.
The oil gas adsorption system 200 is by temperature monitoring in temperature monitor A3 in adsorption tanks A1, adsorption tanks B2, tank, tank
Instrument B4, inlet valve A5, inlet valve B6, desorption selector valve A7, desorption selector valve B8, drain valve A9, drain valve B10, blow down valve
A11, blow down valve B12 are formed；The adsorption tanks A1 tops connect drain valve A9 and blow down valve A11, bottom connection inlet valve A5 and
Selector valve A7 is desorbed, middle and upper part connects temperature monitor A3 in tank；The adsorption tanks B2 tops connection drain valve B10 and blow down valve
B12, bottom connection inlet valve B6 and desorption selector valve B8, middle and upper part connect temperature monitor B4 in tank.
The absorption tower system 300 is made up of vavuum pump 13, absorption tower 14, oil-feed pump 15, scavenge oil pump 16 and pipeline.
Two adsorption tanks alternating sorbents, that is, when adsorption tanks A1 is in adsorbed state, adsorption tanks B2 is in regeneration shape
State, using alternating sorbent, the continuous operation of package unit is realized in regeneration.
State switching is adsorbed with adsorption tanks A1, exemplified by adsorption tanks B2 regeneration.First, oil gas monitors 20 Hes by inlet gas concentration
Intake air temperature monitoring 21, when PLC 400 monitors inlet gas concentration not less than elastic setting value, while enters temperature
When spending also not less than inlet air temperature set value, PLC 400 controls intake valve 17 to open, and air inlet bypass valve 18 is protected
Closed mode is held, refrigeration machine 19 remains shut off state.A adsorption tanks inlet valve 5 is opened, and B adsorption tanks inlet valve 6 is closed, and is closed simultaneously
A tanks parsing selector valve 7 and A tanks blow down valve 11 are closed, drain valve 9 is kept it turned on, and oil gas enters adsorption tanks A1, and adsorption tanks A1 starts to inhale
Receive oil gas.Meanwhile A tanks temperature monitor 3 monitors A tank temperature in real time, temperature is set safely not less than adsorption temp in adsorption tanks
During definite value, PLC 400 controls air inlet bypass valve 18 still to remain off, and refrigeration machine 19 remains shut off shape
State.When adsorption tanks A1 is in adsorbed state, adsorption tanks B2 in completion one circulation oil gas absorption after, in reproduced state.
Now, B tanks drain valve 10 and B tanks blow down valve 12 are closed, and after B tanks desorption selector valve 8 is opened, the low-frequency start of vavuum pump 13 starts
Vacuumize, the oil gas in adsorption tanks B2 is delivered into absorption tower 14, at the same time, oil-feed pump 15 and scavenge oil pump 16 are opened, absorption tower
Spray starts in 14, and the oil gas in adsorption tanks B2 is by Poor oil absorbing.Pressure is reduced to setting value certain time length in tank B2 to be adsorbed
Afterwards, B tanks blow down valve 12 is opened, and introducing cleaned air makes more hydro carbons be desorbed from charcoal bed.Regenerate and tie in adsorption tanks B2
Shu Hou, B tank drain valve 10 is opened, and it is recovered normal pressure, simultaneously closes off oil-feed pump 15 and scavenge oil pump 16, stops spray, scavenge oil pump
It is automatic to start in good time, absorbing tower liquid-level balance is kept, is maintained under safe range.Hereafter adsorption tanks B2 is waited for,
After adsorption tanks A1 adsorption saturations, with its switching state.
PLC 400 passes through temperature monitoring in inlet gas concentration monitor 20, intake air temperature monitor 21 and tank
Temperature monitor B4 in instrument A3, tank, whole extension concentration elasticity charcoal absorption oil gas recovery processing system is supervised in real time
Survey.When PLC 400 monitors situations below：1) inlet gas concentration exceedes elastic setting value；2) intake air temperature surpasses
Cross inlet air temperature set value；3) adsorption tanks A1 or adsorption tanks B2 adsorption tanks temperature in adsorbed state is set safely more than adsorption temp
Definite value.Three cases above is considered as abnormality, three kinds of states, and one of which state individually occurs, or two kinds so that three kinds
State occurs simultaneously when, PLC 400 opens air inlet bypass valve 18 at once, starts refrigeration machine 19, simultaneously close off into
Air valve 17 so that oil gas air inlet after cryocooled cools, by intake air temperature control higher than 5 DEG C, it is optimal less than 15 DEG C
In operating temperature range.Then, the oil gas after cooling is sent into adsorption tanks A1 or adsorption tanks B2 and carries out absorption processing, until air inlet
Concentration, intake air temperature, and when cooling tank temperature all returns to normal condition by abnormality, PLC 400 is controlled
System opens intake valve 17, closes refrigeration machine 19 and air inlet bypass valve 18.
Claims (2)
- A kind of 1. charcoal absorption gas recovery system for oil, it is characterised in that：System by charge air-cooling system, oil gas adsorption system, Absorption tower system and PLC composition；The charge air-cooling system is connected with oil gas adsorption system, oil gas absorption system System is connected with absorption tower system, and absorption tower system joined top has pipeline and charge air-cooling system, oil gas adsorption system Connecting line is connected；The charge air-cooling system is bypassed by inlet gas concentration monitor, intake air temperature monitor, intake valve, air inlet Valve, refrigeration machine and pipeline composition；The inlet gas concentration monitor, intake air temperature monitor, intake valve are sequentially arranged in main line On, it is parallel with air inlet bypass valve and refrigeration machine with intake valve；The oil gas adsorption system is made up of two sets of absorption canister assemblies, is often covered Adsorbing canister assembly includes temperature monitor, inlet valve, desorption selector valve, drain valve, blow down valve in adsorption tanks, tank；The absorption Upper end connects drain valve and blow down valve, and bottom connection inlet valve and desorption selector valve, middle and upper part connect temperature monitor in tank； The absorption tower system is made up of vavuum pump, absorption tower, oil-feed pump, scavenge oil pump and pipeline.
- A kind of 2. charcoal absorption gas recovery system for oil according to claim 1, it is characterised in that：PLC For detect inlet gas concentration monitor, in intake air temperature monitor and tank temperature monitor signal, and to intake valve, air inlet by Road valve is controlled with refrigeration machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721090645.4U CN207153398U (en) | 2017-08-29 | 2017-08-29 | A kind of charcoal absorption gas recovery system for oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721090645.4U CN207153398U (en) | 2017-08-29 | 2017-08-29 | A kind of charcoal absorption gas recovery system for oil |
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| CN207153398U true CN207153398U (en) | 2018-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966850A (en) * | 2018-12-17 | 2019-07-05 | 宁夏宝塔化工中心实验室(有限公司) | A kind of catalytic regeneration smoke adsorption purification device |
| CN111729466A (en) * | 2020-06-15 | 2020-10-02 | 四川省宜宾环球集团有限公司 | Decoration firing furnace VOCs processing system |
-
2017
- 2017-08-29 CN CN201721090645.4U patent/CN207153398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966850A (en) * | 2018-12-17 | 2019-07-05 | 宁夏宝塔化工中心实验室(有限公司) | A kind of catalytic regeneration smoke adsorption purification device |
| CN111729466A (en) * | 2020-06-15 | 2020-10-02 | 四川省宜宾环球集团有限公司 | Decoration firing furnace VOCs processing system |
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