CN106765210B - A kind of incineration treatment method and device of refinery's organic exhaust gas - Google Patents
A kind of incineration treatment method and device of refinery's organic exhaust gas Download PDFInfo
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- CN106765210B CN106765210B CN201510800810.XA CN201510800810A CN106765210B CN 106765210 B CN106765210 B CN 106765210B CN 201510800810 A CN201510800810 A CN 201510800810A CN 106765210 B CN106765210 B CN 106765210B
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Abstract
The present invention relates to a kind of incineration treatment methods of refinery's organic exhaust gas, detect the organic concentration in exhaust gas first, and when organic concentration is more than upper explosion limit, exhaust gas is directly entered heating furnace burning disposal；When organic concentration is less than upper explosion limit, it is 5000 35000mg/m that exhaust gas, which enters the organic concentration that diesel oil absorption equipment is stablized in exhaust gas,3, and burning disposal is carried out with the suitably existing heating furnace of air quantity with this concentration and exhausted air quantity selection；It when without discharge gas, introduces a certain amount of air and enters diesel oil absorption equipment, make 5000 35000mg/m of organic concentration stabilization after treatment in exhaust gas3, subsequently into heating furnace burning disposal.The present invention detects the organic concentration in exhaust gas first, and shunting processing is carried out according to organic concentration difference, under exhaust gas drain time and organic concentration uncertain condition, the normal operation of heating furnace and its air distribution wind turbine will not be interfered, without risk of explosion and hidden danger, after burning disposal, purified gas can qualified discharge.
Description
Technical field
The present invention relates to environmentally friendly technical field of waste gas treatment, and in particular to a kind of incineration treatment method of refinery's organic exhaust gas
And device.
Background technology
The complicated component of organic exhaust gas generates serious harm to environment and the mankind, it has also become China environmental protection work
One of emphasis.For oil plant during processing crude oil, some facilities inevitably give off a large amount of odor pollution exhaust gas,
Waste gas component such as sour water storage tank, semi-finished product oil product storage tank, sump oil storage tank, especially sour water storage tank etc., loss is multiple
Miscellaneous, odorant pollutant includes hydrogen sulfide, organic sulfur compound, benzene homologues and other VOCs in exhaust gas（Volatile organic matter）Etc. groups
Point.The exhaust gas not only causes the odor pollution of surrounding enviroment, threatens to health, and causes a large amount of hydrocarbon resources waves
Take.Especially this kind of exhaust gas belongs to uncontrollable discharge pollution sources, and drain time, discharge capacity and pollutant concentration are uncertain, only
It is larger to change difficulty.
Currently, administering the commonplace method of organic exhaust gas both at home and abroad has absorption method, absorption process, condensation method, oxidizing process, life
There are some new technologies again in recent years in object facture etc., such as membrane separation process, light decomposition method and adsoption catalysis aoxidize General Office
Reason technology.Combustion method is totally higher than absorption process and absorption method to the removal efficiency of organic exhaust gas, it has also become VOCs treatment
Important means.Combustion method is that the organic waste-gas purification method compared thoroughly utilizes existing heating furnace, burning in oil plant
The processing organic exhaust gas such as stove, catalytic cracking regenerator and CO boilers, torch, investment is small, and purification efficiency is high.Current combustion method master
There are common flame combustion, catalysis burning, heat-accumulation combustion, heat-storage catalytic burning, boiler heating power burning etc..Commonly flame combustion is
Organic exhaust gas feeding is had in the combustion furnace of flame, so that combustible component is burnt, is converted to carbon dioxide and water, the method treatment effeciency
Height, but high energy consumption, operating cost is excessively high, and a large amount of hydrocarbon resources waste in exhaust gas.Boiler heating power combustion technology refers to utilization
It is existing for electric boiler, heating boiler or the dedicated heating furnace of other non-exhaust-gas treatments or incinerator, the exhaust gas of generation is directly drawn
Enter to combustion chamber, achievees the purpose that remove pollutant in the case where reducing oil (gas) filling device as possible.The method has simple and practical, investment
Save, operating cost is low, and removal efficiency is high, moreover it is possible to bring certain economic benefit, be suitable for VOCs treatment, current use compared with
It is universal.But the normal operation of heating furnace and its air distribution wind turbine can be interfered, and there are risk of explosion and hidden danger.
CN103697482A discloses a kind of organic exhaust gas boiler heating power burning processing system and treatment process, processing unit
Including absorption plant connected in sequence, boiler fan, boiler, desulphurization denitration dust-extraction unit and chimney, ensureing clean-up effect
Under the premise of, it is handled by the way that demisting processing, emergent emission treatment and air balance is arranged, enhances the stability and peace of entire technique
Quan Xing.But this method only exhaust gas concentration be less than explosion limit 1/4 when, just can enter follow-up incineration system continue
Processing, is only applicable to the processing of low concentration organic exhaust gas.For high-concentration organic waste gas, due to the explosion of most of organic matters
Lower limit is in 20000~50000mg/m3, subsequently burnt since exhaust gas concentration to be controlled can just enter in limited time less than 1/4 explosion limit
Burning processing namely exhaust gas total hydrocarbon concentration are higher than 12500mg/m3Exhaust gas all will directly from emergent floss hole discharge, place be not achieved
Manage purpose.In addition, the device also needs to that special air balance processing is arranged, and the absorption plant in the technique is only to useless
Impurity, particle and acidic materials in gas are pre-processed, and cannot be recycled the hydrocarbons in exhaust gas, be caused a large amount of hydrocarbon resources
Waste, it is less economical.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of incineration treatment method and device of refinery's organic exhaust gas.This
Invention detects the organic concentration in exhaust gas first, and carries out shunting processing according to organic concentration difference, when exhaust gas discharges
Between and organic concentration uncertain condition under, will not interfere the normal operation of heating furnace and its air distribution wind turbine, no risk of explosion and
Hidden danger, after burning disposal, purified gas can qualified discharge.
The incineration treatment method of refinery's organic exhaust gas of the present invention, including following content：The organic matter in exhaust gas is detected first
Concentration, when organic concentration is more than upper explosion limit, exhaust gas is directly entered heating furnace burning disposal；When organic concentration is less than quick-fried
When the fried upper limit, it is 5000-35000mg/m that exhaust gas, which enters the organic concentration that diesel oil absorption equipment is stablized in exhaust gas,3, and it is dense with this
Degree and exhausted air quantity selection carry out burning disposal with the suitably existing heating furnace of air quantity；When without discharge gas, a certain amount of air is introduced
Into diesel oil absorption equipment, make the 5000-35000mg/m of organic concentration stabilization after treatment in exhaust gas3, subsequently into heating
Stove burning disposal.
In the present invention, organic exhaust gas is essentially from petroleum chemical enterprise's raw material storage tank, acid water tank field, alkaline residue acidification treater
Deng discharge exhaust gas, the drain time and organic concentration of this kind of exhaust gas are in dynamic change, and concentration generally may be up to hundreds of thousands very
To mg/m up to a million3.When the sulfide containing high concentration in exhaust gas（H2S and organic sulfur compound）When, concentration arrives hundreds of thousands thousands of
mg/m3, diesel oil absorption equipment can remove organic sulfur compound and partial vulcanization hydrogen in exhaust gas.When concentration of hydrogen sulfide is excessively high,
Can further mating corresponding desulfurization equipment, lye absorption equipment can be such as set, by the hydrogen sulfide stripping in exhaust gas.
In the present invention, when organic concentration is more than upper explosion limit in exhaust gas, risk of explosion is not present in exhaust gas, can be direct
It burns into heating furnace or is burned after being mixed with fuel gas.
In the present invention, when total hydrocarbons concentration is less than upper explosion limit in exhaust gas, it is useless that exhaust gas enters diesel oil absorption equipment stabilization
Organic concentration in gas is 5000-35000mg/m3, and the suitably existing heating of air quantity is matched with this concentration and exhausted air quantity selection
Stove carries out burning disposal.The suitable heating furnace of air quantity is matched in selection, after usually being absorbed with diesel oil in exhaust gas maximum organic concentration into
Row is calculated.The operation operating mode of the heating furnace of selection is good, and fuel combustion is abundant, and the non-methane total hydrocarbons in flue gas is less than 20mg/m3,
NOXLess than 100mg/m3, can be oil refining process heating furnace, FCC waste heat boilers, burn stove, tail gas of sulphur incinerator, burn ammonia stove
Deng.Organic concentration is relatively stable in exhaust gas after being absorbed due to diesel oil, selects existing suitable heating furnace with this concentration, no
Newly added equipment is needed, the normal operation of existing heating furnace or incinerator will not be interfered.
In the present invention, diesel oil absorbent can select gas-oil, including normal two wires gas-oil, atmosphere 3rd side cut gas-oil, catalysis
Cracking coarse diesel, preferably normal two, three line gas-oil, the rich diesel oil absorbent after absorption go to add at hydrogen after mixing with hydrogenating materials
Reason.By the way that diesel oil absorption equipment operating parameter is adjusted, organic concentration, main control parameters in exhaust gas after control absorbs
Have：Liquid-gas ratio is 60-150L/m3, preferably 80-100L/m3；It is 5-40 DEG C, preferably 10-35 DEG C to absorb temperature；Absorption pressure
For 20-200kPaG, preferably 50-150kPaG.
In the present invention, exhaust gas needs to be introduced into gas mixer after diesel oil absorbs, and is filled with the air distribution air of selected heating furnace
Burning disposal is carried out again after dividing mixing；Exhaust gas distributor is set more preferably in gas mixer, to prevent the excessively high shape of local concentration
At explosive air mass.
Usual organic exhaust gas, which enters heating furnace or incinerator processing, 3 kinds of modes, first, it is directly entered combustion chamber, second is that with
Air enters, third, entering with fuel gas（Coal-fired, oil burning boiler cannot be inputted with fuel）.First way will ensure in exhaust gas
Organic concentration be less than lower explosion limit 25% or be much larger than upper explosion limit；The second way will ensure organic in gaseous mixture
Object concentration is less than the 25% of lower explosion limit；The third mode will ensure that the organic concentration in mixed gas is much larger than upper explosion limit.
Therefore, the lower exhaust gas of organic concentration preferably enters with air, and dense exhaust gas preferably enters with fuel gas.The present invention passes through
The concentration of organic matter in diesel oil Vapor recovery unit exhaust gas, the suitable heating furnace of air quantity is matched in selection, and controls exhaust gas and heating furnace air distribution
The organic concentration of air gas mixture is less than 200mg/m3, preferably smaller than 100mg/m3, oxidation stain material consumption oxygen amount is less than
0.05%, preferably smaller than 0.03%, it is ensured that the organic concentration in mixed gas is far smaller than the 25% of lower explosion limit, highly concentrated
Degree organic exhaust gas can enter heating furnace with air, and risk of explosion and hidden danger is not present, will not interfere existing heating
The normal operation of stove or incinerator.
In the present invention, when discharge region non-exhaust emission, a certain amount of air is introduced in diesel oil absorption equipment, maintains diesel oil
The stabilization of absorption equipment pressure, while diesel oil is contacted with air inversion, diesel oil volatilizees on a small quantity, keeps the organic concentration of exhaust gas basic
Stablize in 5000-20000mg/m3Between.
The present invention is used for the device of above-mentioned organic exhaust gas incineration treatment method, including waste gas stream gauge, air door, exhaust gas
Bleed equipment, hydrocarbon concentration in-line analyzer, exhaust gas switching valve group, diesel oil absorption equipment, gas mixer, heating furnace gas-distributing fan and
Heating furnace etc., wherein waste gas stream gauge are for having monitored whether that discharge gas generates, and when there is discharge gas, the conveying of waste gas stream gauge is closed
Signal is closed to air door, when without discharge gas, flowmeter sends out signal and opens air door, introduces a certain amount of air and enters
Diesel oil absorption equipment；Waste gas inducing equipment is for introducing exhaust gas into diesel oil absorption equipment or heating furnace；Hydrocarbon concentration in-line analyzer
With with total hydrocarbon concentration in on-line monitoring exhaust gas, while giving exhaust gas switching valve group corresponding signal, when total hydrocarbon concentration is more than in explosion
In limited time, the valve that exhaust gas is directly discharged into heating furnace is opened, the valve into diesel oil absorption equipment is closed；When total hydrocarbon concentration is less than quick-fried
When the fried upper limit, the valve for being discharged into diesel oil absorption equipment is opened, closes the valve for being discharged into heating furnace；Diesel oil absorption equipment is for recycling
Organic matter in exhaust gas removes organic sulfur compound and partial vulcanization hydrogen, and ensures that organic concentration is stablized in exhaust gas after absorbing
5000-35000mg/m3；Gas mixer is mixed for exhaust gas after absorbing with heating furnace air distribution air proportion, after making mixing
Organic concentration is less than 200mg/m3, oxidation stain material consumption oxygen amount is less than 0.05%；Gas is sent by heating furnace gas-distributing fan after mixing
Enter heating furnace burning disposal, purified gas qualified discharge.
In the present invention, when there is exhaust gas discharge, exhaust gas flow is in respect of flow indication, and conveying shutdown signal is to air door；
When non-exhaust emission, waste gas stream gauge sends out signal, opens air door, introduces a certain amount of air and enters diesel oil absorption and sets
It is standby, the stabilization of diesel oil absorption equipment pressure is maintained, and ensure that the organic concentration after diesel oil absorbs in exhaust gas is basically stable at
5000-35000mg/m3。
In the present invention, the structurally and operationally condition of this field routine may be used in diesel oil absorption equipment, such as uses material filling type
Absorption tower, inner-tower filling material are conventional structured packing, preferably metal structured packing, more preferable metal step ring.
In the present invention, when sulfide containing high concentration in exhaust gas, can further mating corresponding desulfurization equipment, such as
Lye absorption equipment can be set, realizes the thorough removing of hydrogen sulfide.
In the present invention, the emergent interlocking of installation is cut on the pipeline before gas mixer and outside diesel oil absorption equipment on comb line
Disconnected valve group and exhaust tube, when heating furnace air distribution wind turbine stops, emergency switching-off valve group carries out interlocking switching, and cut-out is mixed into gas
The valve group of clutch opens exhaust gas to exhaust tube valve group, makes exhaust gas by exhaust tube direct emission.Exhaust gas is discharged in diesel oil absorption equipment
Spark arrester is set on pipeline before being mixed with air distribution air and on discharge exhaust gas to the pipeline of exhaust tube, enhances stability and safety
Property.
Compared with prior art, the method for the present invention has the advantages that：
（1）The present invention detects organic concentration in exhaust gas first, carries out shunting processing based on this concentration difference, passes through diesel oil
Organic concentration in Vapor recovery unit exhaust gas, and existing suitable heating furnace is selected with this concentration, control exhaust gas is with air distribution air
Organic concentration when into heating furnace, it is uncertain in exhaust gas drain time and organic concentration, it will not interfere and add
The normal operation of hot stove and its air distribution wind turbine, no risk of explosion and hidden danger, after burning disposal, purified gas can be up to standard
Discharge.
（2）Present invention can ensure that in diesel oil absorption equipment pressure and subsequent processes organic concentration stabilization, no
It needs that concentration and air balance equipment is arranged, the normal operation of existing heating furnace will not be interfered；And it can be to avoid hydrocarbons
A large amount of wastes, the exhaust-gas treatment especially suitable for evacuation time and the uncertain uncontrollable discharge source of organic concentration.
（3）The drain time and organic concentration of high-concentration organic waste gas are unstable, such as with fuel gas or be directly entered plus
Hot stove, there are risk, safety is poor.For this purpose, high-concentration organic waste gas is entered heating furnace by the present invention with air, by mixing
Organic concentration and oxidation stain material consumption oxygen amount while, regulate and control in gas, need not set flammable gas alarm, it is ensured that
Safe combustion.
Description of the drawings
Fig. 1 is a kind of concrete technology flow process figure of the present invention；
Wherein, 1- high-concentration organic waste gas, 2- waste gas stream gauge, 3- Waste gas inducing equipment, 4- air, 5- air doors,
6- hydrocarbon concentration in-line analyzers, 7-8- exhaust gas switching valve groups, 9- diesel oil absorption equipments, 10- lye absorption equipments, 11- spark arresters,
12- heating furnace air distribution air, 13- gas mixers, 14- heating furnace gas-distributing fans, 15- heating furnaces, 16- furnace fuels, 17-
The emergent interlocking cut-out valve groups of 18-, 19- spark arresters, 20- meet an urgent need exhaust tube.
Specific implementation mode
The method of the present invention and device are described in detail below by attached drawing 1 and embodiment.Have in the embodiment of the present invention
Machine object concentration is in terms of total hydrocarbon concentration.
The incinerating and treating device of organic exhaust gas of the present invention is as shown in Fig. 1, empty when there is the discharge of high-concentration organic waste gas 1
Air valve 5 is closed, and organic exhaust gas detects under the driving of Waste gas inducing equipment 3 by hydrocarbon concentration in-line analyzer 6
Organic concentration in exhaust gas closes exhaust gas valve 8 when organic concentration is more than upper explosion limit in exhaust gas, opens exhaust gas valve
Door 7, high-concentration organic waste gas enter heating after lye absorption equipment 10 removes sulfide after being mixed with furnace fuel 16
Stove 15 carries out burning disposal, or is directly entered the burning of 15 burner hearth of heating furnace.When organic concentration is less than upper explosion limit in exhaust gas
When, exhaust gas valve 7 is closed, opens exhaust gas valve 8, high-concentration organic waste gas enters diesel oil absorption equipment 9 and handled, recoverer
Divide hydrocarbons, after removing organic sulfur compound and most of hydrogen sulfide, it is ensured that organic concentration is stablized after treatment in exhaust gas
5000-35000mg/m3.When concentration of hydrogen sulfide is excessively high, mating lye absorption equipment further takes off the hydrogen sulfide in exhaust gas
It removes.When high-concentration organic waste gas 1 stops discharging, waste gas stream gauge 2 sends out signal, opens air door 5, introduce air 4 into
Enter diesel oil absorption equipment 9, makes the 5000-20000mg/m of organic concentration stabilization after treatment in exhaust gas3, subsequently into heating
Stove burning disposal.Organic exhaust gas after diesel oil absorbs and lye absorbs, a concentration of 5000-35000mg/m3, through spark arrester
11, it in gas mixer 13, is sufficiently mixed with heating furnace air distribution air 12, under the driving of heating furnace gas-distributing fan 14, enters
Heating furnace 15 carries out burning disposal.When heating furnace gas-distributing fan 14 is stopped, valve group 17-18 is cut off in the emergent interlocking of startup, immediately
Valve 17, Open valve 18 are closed, stopping introduces exhaust gas into heating furnace, and exhaust gas is set by diesel oil absorption equipment 9 and lye absorption
After standby 10 processing, through spark arrester 19 by 20 dump of exhaust tube of meeting an urgent need.
Embodiment 1
Using the processing unit and method of attached drawing 1 of the present invention, certain refinery's Naphtha tank discharge exhaust gas is handled, exhaust gas is maximum
Discharge tolerance is 300Nm3/ h, total hydrocarbon concentration 300-800g/m3, sulfide content is relatively low, is less than 10mg/m3.General naphtha
Explosive range is 1.1%-8.7%, upper explosion limit 8.7%（About 430g/m3）.
The organic concentration in exhaust gas is detected first, when total hydrocarbon concentration is higher than upper explosion limit, can be directly entered heating
Stove burning disposal, or enter heating furnace burning disposal after being mixed with furnace fuel gas.
When total hydrocarbon concentration is less than upper explosion limit in exhaust gas, exhaust gas enters diesel oil absorption equipment, using atmosphere 3rd side cut gas-oil,
The liquid-gas ratio of absorption is 100L/m3, it is 35 DEG C, absorption pressure 100kPa to absorb temperature, and diesel oil is stablized after absorbing in exhaust gas
Total hydrocarbon concentration is 15000-35000mg/m3；When without discharge gas, introduces a certain amount of air and enter diesel oil absorption equipment, maintain bavin
The pressure of oily absorption system, while air will carry out partial organic substances by diesel oil, and total hydrocarbon concentration in exhaust gas is made to stablize
5000-20000mg/m3.Maximum total hydrocarbon concentration 35000mg/m in exhaust gas after being absorbed with diesel oil3Calculated, and with this concentration and
Exhausted air quantity selection carries out burning disposal with the suitably existing heating furnace of air quantity, and the operation operating mode of the heating furnace of selection is good, fuel
Burning is abundant, and the total hydrocarbon concentration in flue gas is less than 20mg/m3, NOXLess than 100mg/m3, air distribution air capacity is 105000m3/ h with
On heating furnace.Total hydrocarbon concentration is less than 100mg/m after organic exhaust gas is mixed with air distribution air3, the consumption of pollutant in oxidation gaseous effluent
Oxygen amount is 0.028%.
Exhaust gas after above-mentioned processing can qualified discharge, discharge gas in total hydrocarbon concentration be less than 20mg/m3.By longtime running
（1 year or more）, heating furnace and air distribution wind turbine be in normal operation, and stability and safety are good.
Embodiment 2
Using the processing unit and method of attached drawing 1 of the present invention, certain refinery's oil product pans discharge exhaust gas, exhaust gas discharge are handled
Amount is 0-300m3/ h, total hydrocarbon concentration 300-500g/m3, organic sulfur compound content is 500-1500mg/m3, H2S contents are
1000-8000mg/m3.The explosive range of the oil product is 2%-3%, upper explosion limit 3%（About 305g/m3）.
The organic concentration in exhaust gas is detected first, when total hydrocarbon concentration is higher than upper explosion limit, can be directly entered heating
Stove burning disposal, or enter heating furnace burning disposal after being mixed with furnace fuel gas.
When total hydrocarbon concentration is less than upper explosion limit in exhaust gas, exhaust gas enters diesel oil absorption equipment, using atmosphere 3rd side cut gas-oil,
The liquid-gas ratio of absorption is 100L/m3, it is 8 DEG C, absorption pressure 80kPa to absorb temperature, and diesel oil is stablized total in exhaust gas after absorbing
A concentration of 15000-25000mg/m of hydrocarbon3；When without discharge gas, introduces a certain amount of air and enter diesel oil absorption equipment, maintain diesel oil
The pressure stability of absorption system, while air will carry out partial organic substances by diesel oil, and total hydrocarbon concentration in exhaust gas is made to stablize
5000-20000mg/m3.Maximum total hydrocarbon concentration 25000mg/m in exhaust gas after being absorbed with diesel oil3Calculated, and with this concentration and
Exhausted air quantity selection carries out burning disposal with the suitably existing heating furnace of air quantity, and the operation operating mode of the heating furnace of selection is good, fuel
Burning is abundant, and the total hydrocarbon concentration in flue gas is less than 20mg/m3, NOXLess than 100mg/m3, air distribution air capacity is 75000m3/ h or more
Heating furnace.Total hydrocarbon concentration is less than 100mg/m after organic exhaust gas is mixed with air distribution air3, the oxygen consumption of pollutant in oxidation gaseous effluent
Amount is 0.028%.
Exhaust gas after diesel oil absorbs enters lye absorption equipment, is absorbed using the sodium hydroxide solution of concentration 10%-15% useless
Remaining hydrogen sulfide in gas, the organic sulfur compound concentration after absorption in exhaust gas are less than 50mg/m3, hydrogen sulfide content is less than 10mg/m3。
Then heating furnace is introduced by gas-distributing fan after gas mixer is mixed with air distribution air and carries out burning disposal.
Exhaust gas after above-mentioned processing can qualified discharge, discharge gas in total hydrocarbon concentration be less than 20mg/m3, SO2Concentration is less than 1
mg/m3.By longtime running（1 year or more）, heating furnace and air distribution wind turbine be in normal operation, and stability and safety are good.
Embodiment 3
Using the processing unit and method of attached drawing 1 of the present invention, certain refinery's oil product pans discharge exhaust gas, exhaust gas discharge are handled
Amount is 0-300m3/ h, total hydrocarbon concentration 300-600g/m3, organic sulfur compound content is 500-1000mg/m3, H2S contents are
1000-10000mg/m3.The explosive range of the oil product is 2%-3%, upper explosion limit 3%（About 305g/m3）.
The organic concentration in exhaust gas is detected first, when total hydrocarbon concentration is higher than upper explosion limit, can be directly entered heating
Stove burning disposal, or enter heating furnace burning disposal after being mixed with furnace fuel gas.
When total hydrocarbon concentration is less than upper explosion limit in exhaust gas, exhaust gas enters diesel oil absorption equipment, using atmosphere 3rd side cut gas-oil,
The liquid-gas ratio of absorption is 100L/m3, it is 8 DEG C, absorption pressure 150kPa to absorb temperature, and diesel oil is stablized total in exhaust gas after absorbing
A concentration of 10000-17000mg/m of hydrocarbon3；When without discharge gas, introduces a certain amount of air and enter diesel oil absorption equipment, maintain diesel oil
The pressure stability of absorption system, while air will carry out partial organic substances by diesel oil, and total hydrocarbon concentration in exhaust gas is made to stablize
5000-15000mg/m3.Maximum total hydrocarbon concentration 17000mg/m in exhaust gas after being absorbed with diesel oil3It is calculated, with this concentration and is given up
Tolerance selection carries out burning disposal with the suitably existing heating furnace of air quantity.The operation operating mode of the heating furnace of selection is good, fuel combustion
It burns fully, the total hydrocarbon concentration in flue gas is less than 20mg/m3, NOXLess than 100mg/m3, air distribution air capacity is 51000m3/ h's or more
Heating furnace.Total hydrocarbon concentration is less than 100mg/m after organic exhaust gas is mixed with air distribution air3, the oxygen demand of pollutant in oxidation gaseous effluent
It is 0.028%.
Exhaust gas after diesel oil absorbs enters lye absorption equipment, is absorbed using the sodium hydroxide solution of concentration 10%-15% useless
Remaining hydrogen sulfide in gas, organic sulfur compound concentration is less than 30mg/m in exhaust gas after absorption3, hydrogen sulfide content is less than 10mg/m3.So
Heating furnace is introduced by gas-distributing fan after being mixed with air distribution air by gas mixer and carries out burning disposal.
Exhaust gas after above-mentioned processing can qualified discharge, discharge gas in total hydrocarbon concentration be less than 20mg/m3, SO2Concentration is less than 1
mg/m3.By longtime running（1 year or more）, heating furnace and air distribution wind turbine be in normal operation, and stability and safety are good.
Comparative example 1
When the organic exhaust gas of processing is dense（Higher than upper explosion limit）, preferably enter incinerator with fuel gas, therefore will
The organic exhaust gas that embodiment 1 uses enters incinerator with fuel gas.Since the total hydrocarbon concentration of the exhaust gas is 300-800g/m3, and
And exhaust gas is that intermittent discharge mixes or be directly entered heating furnace burner hearth with fuel gas, fuel gas fluctuation is larger, to existing heating
The normal operating influence of stove is very big, is unable to stable operation.
Comparative example 2
Process flow and operating condition are with embodiment 2, the difference is that do not use diesel oil to absorb, directly with air distribution air
Mixing, if selecting air distribution air quantity for 75000Nm3/ h heating furnace air distributions be sufficiently mixed after enter heating furnace burn, exhaust gas with match
Total hydrocarbon concentration after wind air is sufficiently mixed is 100-2000mg/m3Although being far below 25%LEL（Lower explosion limit）, there is no peaces
Full hidden danger, but it is 0.03%~0.56% to burn the oxygen demand needed for this some of the contaminants, then it can be to the normal of existing heating furnace
Operation influence is very big, is unable to stable operation.
Comparative example 3
Process flow and operating condition with embodiment 2, the difference is that, if select with air distribution air quantity be 5000Nm3/
H heating furnace air distributions enter heating furnace after being sufficiently mixed and burn, and the total hydrocarbon concentration after exhaust gas is sufficiently mixed with air distribution air is 300-
1500mg/m3Although well below 25%LEL（Lower explosion limit）, security risk is not present, but burns this some of the contaminants institute
The oxygen consumption needed is 0.08%~0.42%, can be very big on the normal operating of existing heating furnace influence, is unable to stable operation.
Comparative example 4
Process flow and operating condition are with embodiment 2, the difference is that when storage tank is without discharge gas, and do not introduce certain
The air of amount, the pressure in diesel oil absorption equipment cannot keep, and the pressure in absorption tower will likely become normal pressure even tiny structure,
The variation of tower pressure interior force has an impact the stable operation for absorbing oil, causes the operation of diesel oil absorption equipment to be fluctuated, is unable to maintain that length
The operation that phase stablizes.
Claims (14)
1. a kind of incineration treatment method of refinery's organic exhaust gas detects the organic concentration in exhaust gas, when organic concentration is more than
When upper explosion limit, exhaust gas is directly entered heating furnace burning disposal；It is characterized in that：When organic concentration is less than upper explosion limit,
It is 5000-35000mg/m that exhaust gas, which enters the organic concentration that diesel oil absorption equipment is stablized in exhaust gas,3, and with this concentration and exhaust gas
Amount selection carries out burning disposal with the suitably existing heating furnace of air quantity；When without discharge gas, introduces a certain amount of air and enter diesel oil
Absorption equipment makes the 5000-35000mg/m of organic concentration stabilization after treatment in exhaust gas3, burnt subsequently into above-mentioned heating furnace
Burning processing.
2. according to the method described in claim 1, it is characterized in that：Organic exhaust gas is essentially from petroleum chemical enterprise's raw material storage tank, acid
Property water pot area or alkaline residue acidification treater discharge exhaust gas, the drain time and organic concentration of this kind of exhaust gas are in dynamic change,
It is at concentrations up to hundreds of thousands mg/m3Or at concentrations up to mg/m up to a million3。
3. method according to claim 1 or 2, it is characterised in that：Mating corresponding desulfurization equipment, by the vulcanization in exhaust gas
Hydrogen removes.
4. according to the method described in claim 1, it is characterized in that：The suitable heating furnace of air quantity is matched in selection, after being absorbed with diesel oil
Maximum organic concentration is calculated in exhaust gas.
5. according to the method described in claim 1, it is characterized in that：The existing heating furnace of selection is oil refining process heating furnace, FCC
Waste heat boiler burns stove, tail gas of sulphur incinerator or burns ammonia stove, and operation operating mode is good, and fuel combustion is abundant, the non-first in flue gas
Alkane total hydrocarbon is less than 20mg/m3, NOXLess than 100mg/m3。
6. according to the method described in claim 1, it is characterized in that：Diesel oil absorbent selects gas-oil, the rich diesel oil after absorption
Absorbent goes hydrotreating after being mixed with hydrogenating materials；By the way that diesel oil absorption equipment operating parameter is adjusted, control absorbs
Organic concentration in exhaust gas, main control parameters have afterwards：Liquid-gas ratio is 60-150L/m3, it is 5-40 DEG C to absorb temperature, absorbs pressure
Power is 20-200kPaG.
7. according to the method described in claim 1, it is characterized in that：Oil absorb after exhaust gas is introduced into gas mixer, with select
The air distribution air of heating furnace carries out burning disposal again after being sufficiently mixed.
8. according to the method described in claim 1, it is characterized in that：Control exhaust gas has with heating furnace air distribution air gas mixture
Machine object concentration is less than 200mg/m3, oxidation stain material consumption oxygen amount is less than 0.05%.
9. the device for any organic exhaust gas incineration treatment methods of claim 1-8, it is characterised in that including exhaust gas
Flowmeter, air door, Waste gas inducing equipment, hydrocarbon concentration in-line analyzer, exhaust gas switching valve group, diesel oil absorption equipment, gas
Mixer, heating furnace gas-distributing fan and heating furnace, wherein waste gas stream gauge are for having monitored whether that discharge gas generates, when there is discharge gas
When, waste gas stream gauge conveys shutdown signal to air door, and when without discharge gas, flowmeter sends out signal and opens air door,
It introduces a certain amount of air and enters diesel oil absorption equipment；Waste gas inducing equipment is for introducing exhaust gas into diesel oil absorption equipment or heating
Stove；Hydrocarbon concentration in-line analyzer with total hydrocarbon concentration in on-line monitoring exhaust gas, while giving exhaust gas switching valve group corresponding signal, when
When total hydrocarbon concentration is more than upper explosion limit, the valve that exhaust gas is directly discharged into heating furnace is opened, closes the valve into diesel oil absorption equipment
Door；When total hydrocarbon concentration is less than upper explosion limit, the valve for being discharged into diesel oil absorption equipment is opened, closes the valve for being discharged into heating furnace；
Diesel oil absorption equipment is used to recycle the organic matter in exhaust gas, removes organic sulfur compound and partial vulcanization hydrogen, and ensures to give up after absorbing
Organic concentration is stablized in 5000-35000mg/m in gas3；Gas mixer is empty with heating furnace air distribution for exhaust gas after absorbing
Gas mixes in proportion, and organic concentration is less than 200mg/m after making mixing3, oxidation stain material consumption oxygen amount is less than 0.05%；After mixing
Gas is sent into heating furnace burning disposal, purified gas qualified discharge by heating furnace gas-distributing fan.
10. device according to claim 9, it is characterised in that：It introduces a certain amount of air and enters diesel oil absorption equipment, maintain
The stabilization of diesel oil absorption equipment pressure, and ensure that the organic concentration after diesel oil absorbs in exhaust gas is stablized in 5000-35000mg/
m3。
11. device according to claim 9, it is characterised in that：Diesel oil absorption equipment uses material filling type absorption tower, is filled out in tower
Material is conventional structured packing.
12. device according to claim 9, it is characterised in that：Mating corresponding desulfurization equipment, realizes the thorough of hydrogen sulfide
Removing.
13. device according to claim 9, it is characterised in that：It is set with diesel oil absorption on pipeline before gas mixer
The emergent interlocking cut-out valve group of installation and exhaust tube on standby outer comb line, when heating furnace air distribution wind turbine stops, emergency switching-off valve group
Interlocking switching is carried out, cut-out opens exhaust gas to the valve of exhaust tube, exhaust gas is made directly to be arranged by exhaust tube into the valve of gas mixer
It puts.
14. device according to claim 9, it is characterised in that：It is mixed in diesel oil absorption equipment discharge exhaust gas and air distribution air
Spark arrester is set on pipeline before conjunction and on discharge exhaust gas to the pipeline of exhaust tube, enhances stability and safety.
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| CN108303500A (en) * | 2018-02-01 | 2018-07-20 | 新安洁环境卫生股份有限公司 | It is a kind of that there is intelligent measurement, explosion-proof and deodorization functions vehicle |
| CN108386850B (en) * | 2018-04-10 | 2024-07-12 | 江苏大信环境科技有限公司 | Heat accumulating type incineration treatment device for nitrogen-containing organic waste gas |
| CN109185901B (en) * | 2018-10-15 | 2023-07-18 | 南京工业大学 | Flare gas recycling system for power generation and recycling method thereof |
| CN109099445A (en) * | 2018-10-31 | 2018-12-28 | 江苏师范大学 | A kind of incinerator of industrial waste gas |
| CN110274251A (en) * | 2019-06-20 | 2019-09-24 | 山东京博石油化工有限公司 | A kind of exhaust of oil processing system |
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