CN106362547B - A kind of processing method and processing device of sulfur-containing organic waste gas - Google Patents
A kind of processing method and processing device of sulfur-containing organic waste gas Download PDFInfo
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- CN106362547B CN106362547B CN201510434270.8A CN201510434270A CN106362547B CN 106362547 B CN106362547 B CN 106362547B CN 201510434270 A CN201510434270 A CN 201510434270A CN 106362547 B CN106362547 B CN 106362547B
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Abstract
The invention discloses a kind of processing methods of sulfur-containing organic waste gas, including (1) when there is discharge gas, exhaust gas enters diesel oil absorption equipment through air inducing equipment, when without discharge gas, introduce a certain amount of air, it maintains absorption equipment pressure to stablize, and makes the stable 5000-35000 mg/m after treatment of organic concentration in exhaust gas3；(2) exhaust gas enters lye absorption equipment after absorbing, and deviates from remaining sulfide in exhaust gas；(3) by calculating step (2) discharge amount of exhaust gas and organic concentration, the suitably existing heating furnace of air quantity is matched in selection, it is desirable that organic concentration is less than 200mg/m after exhaust gas is mixed with heating furnace air distribution air3, oxidation stain material consumption oxygen amount is less than 0.05%；(4) under the premise of step (3), exhaust gas after step (2) absorption processing is introduced into gas mixer in proportion, is sufficiently mixed with the air distribution air of selected heating furnace；(5) gas is sent into heating furnace burning disposal, purified gas qualified discharge after mixing.The present invention will not interfere the normal operation of heating furnace and its air distribution blower, no risk of explosion and hidden danger under exhaust gas drain time and the uncertain situation of organic concentration.
Description
Technical field
The present invention relates to environmentally friendly technical field of waste gas treatment, and in particular to a kind of processing method and dress of sulfur-containing organic waste gas
It sets.
Background technique
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,
Such as sour water storage tank, semi-finished product oil product storage tank, sump oil storage tank, especially sour water storage tank, air sweetening process tail gas
Waste gas component Deng, loss is complicated, and odorant pollutant includes hydrogen sulfide, organic sulfur compound, benzene homologues and other VOCs in exhaust gas
Components such as (volatile organic matters).The exhaust gas not only causes the odor pollution of surrounding enviroment, threatens to human health, and
A large amount of hydrocarbon resources are caused to waste.Especially this kind of exhaust gas belongs to uncontrollable discharge pollution sources, drain time, discharge amount and pollution
Object concentration is uncertain, and purification difficulty is larger.
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 in oil plant utilizes existing heating furnace, burning
The processing organic exhaust gas such as furnace, catalytic cracking regenerator and CO boiler, torch, invests 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
The exhaust gas of organic gas is sent into the combustion furnace for having flame, so that combustible component is burnt, is converted to carbon dioxide and water, the method
Treatment effeciency is high, but energy consumption is high, and operating cost is excessively high, and a large amount of hydrocarbon resources waste in exhaust gas.Boiler heating power burning skill
Art refers to using existing for electric boiler, heating boiler or the dedicated heating furnace of other non-exhaust-gas treatments or incinerator, by the useless of generation
Gas is introduced directly into combustion chamber, achievees the purpose that remove pollutant in the case where reducing oil (gas) filling device as far as possible.The method has simple
Practical, with low investment, operating cost is low, and removal efficiency is high, moreover it is possible to and certain economic benefit is brought, VOCs treatment is suitable for,
Use is more universal at present.
CN103697482A discloses a kind of organic exhaust gas boiler heating power burning processing system and treatment process, processing unit
Including sequentially connected absorption plant, boiler fan, boiler, desulphurization denitration dust-extraction unit and chimney, guaranteeing clean-up effect
Under the premise of, it is handled by the processing of setting demisting, emergency emission treatment and air balance, enhances the stability and peace of entire technique
Quan Xing.But this method only exhaust gas concentration be lower than explosion limit 1/4 when, just can enter subsequent 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, since exhaust gas concentration to be controlled can just enter subsequent burn lower than 1/4 explosion limit in limited time
Burning processing namely exhaust gas total hydrocarbon concentration are higher than 12500 mg/m3Exhaust gas all will directly from emergency discharge outlet discharge, place be not achieved
Manage purpose.In addition, the device also needs to be arranged special air balance processing, 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.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of processing method and processing device of sulfur-containing organic waste gas.The present invention
First by the organic concentration in diesel oil Vapor recovery unit exhaust gas, and existing suitable heating furnace is selected with this concentration, control is useless
Gas enters organic concentration when heating furnace with air distribution air, in exhaust gas drain time and the uncertain situation of organic concentration
Under, the normal operation of heating furnace and its air distribution blower, no risk of explosion and hidden danger will not be interfered, by burning disposal
Afterwards, purified gas can qualified discharge.
The processing method of sulfur-containing organic waste gas of the present invention, including following content:
(1) when there is discharge exhaust gas, exhaust gas enters diesel oil absorption equipment through air inducing equipment, when without discharge exhaust gas, introduces
A certain amount of air enters diesel oil absorption equipment, maintains the stabilization of diesel oil absorption equipment pressure, and makes the organic concentration in exhaust gas
The 5000-35000mg/m that is basically stable at that treated3；
(2) exhaust gas after diesel oil absorbs enters in lye absorption equipment, deviates from remaining sulfide in exhaust gas；
(3) by calculating step (2) discharge amount of exhaust gas and organic concentration, the suitably existing heating furnace of air quantity is matched in selection,
It is required that exhaust gas mixed with heating furnace air distribution air after gas organic concentration be less than 200mg/m3, preferably smaller than 100mg/m3, oxygen
Change pollutant oxygen demand (oxygen amount in oxidation gaseous effluent in pollutant consumption air distribution air) is less than 0.05%, and preferably smaller than 0.03%；
(4) under the premise of step (3), exhaust gas after step (2) absorption processing is introduced into gas mixer in proportion, with
The air distribution air of selected existing heating furnace is sufficiently mixed；
(5) gas is sent into heating furnace burning disposal, purified gas qualified discharge by air distribution blower after mixing.
In the present invention, sulfur-containing organic waste gas is mainly from petroleum chemical enterprise's raw material storage tank, acid water tank field, alkaline residue acidification
The exhaust gas of the discharges such as technique, air sweetening technique, the drain time and organic concentration of such exhaust gas are in dynamic change, are had
Machine object concentration generally may be up to tens of thousands of to up to a million mg/m3.Meanwhile the also sulfide (H containing high concentration in this strand of exhaust gas2S and
Organic sulfur compound), concentration arrives hundreds of thousands mg/m thousands of3, diesel oil absorb can also remove organic sulfur compound in exhaust gas and
Partial vulcanization hydrogen.
In the present invention, when there is exhaust gas discharge in discharge region, organic concentration can be stablized in 10000- after diesel oil absorbs
35000mg/m3；When discharge region non-exhaust emission, a certain amount of air is introduced in diesel oil absorption equipment, and diesel oil absorption is maintained to set
The stabilization of standby pressure, diesel oil are contacted with air inversion, and diesel oil volatilization can make the organic concentration of exhaust gas be basically stable at 5000-
20000mg/m3Between.It can be seen that the method for the present invention can not only guarantee diesel oil absorption equipment pressure and subsequent processes
The stabilization of middle organic concentration, and can it is the maximum amount of recycling exhaust gas in hydrocarbons and sulfide, especially suitable for row
Put the sulphur-containing exhaust gas processing in time and the uncertain uncontrollable discharge source of organic concentration.
In the present invention, diesel oil selects gas-oil, including normal two wires gas-oil, atmosphere 3rd side cut gas-oil, catalytic cracking gas-oil,
It is preferred that normal two, three line gas-oil, the rich diesel oil absorbent after absorption goes hydrotreating after mixing with hydrogenating materials.In step (1)
By the way that diesel oil absorption equipment operating parameter is adjusted, the concentration of organic matter in exhaust gas after absorbing is controlled, to meet step (1)
Requirement.Main control parameters have: liquid-gas ratio 60-150L/m3, preferably 80-100L/m3；Absorbing temperature is 5-40 DEG C, excellent
It is selected as 10-35 DEG C；Absorption pressure is 20-200kPaG, preferably 50-150kPaG.
In the present invention, the exhaust gas after diesel oil absorbs enters in lye absorption equipment, deviates from the remaining sulfide in exhaust gas.
Lye, which absorbs, uses lye commonly used in the art, such as sodium hydroxide solution, mass concentration are preferably 10%-15%.
In the present invention, for step (2) by calculating step (1) discharge amount of exhaust gas and organic concentration, selection is suitable with air quantity
Heating furnace, maximum organic concentration is calculated in exhaust gas after usually being absorbed with diesel oil.The heating furnace selected in step (2)
Operation operating condition 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 boiler burn furnace, tail gas of sulphur incinerator, burn ammonia furnace etc..Exhaust gas after being absorbed due to diesel oil
Middle organic concentration is relatively stable, therefore selects existing suitable heating furnace with this concentration, does not need newly added equipment, will not do
It disturbs existing heating furnace or incinerator operates normally.
In the present invention, organic exhaust gas, which enters the processing such as heating furnace or incinerator, 3 kinds of modes, first is that being directly entered burning
Room, second is that entering with air, third is that entering (coal-fired, oil burning boiler cannot be inputted with fuel) with fuel gas.First way is wanted
Guarantee that the organic concentration in exhaust gas is less than the 25% of lower explosion limit LEL or is much larger than upper explosion limit；The second way will guarantee to mix
The organic concentration closed in gas is less than the 25% of lower explosion limit LEL；The third mode will guarantee that the organic matter in mixed gas is dense
Degree is much larger than upper explosion limit.Therefore, the lower exhaust gas of organic concentration preferably enters with air, and dense exhaust gas is preferably with fuel
Gas enters.For the present invention by 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 is controlled
The organic concentration 200mg/m of gas after exhaust gas is mixed with heating furnace air distribution air3, preferably smaller than 100mg/m3, oxidation stain object
Oxygen demand is less than 0.05%, and preferably smaller than 0.03%, it is ensured that the organic concentration in mixed gas is far smaller than lower explosion limit
The 25% of LEL, exhaust gas can enter heating furnace with air, and risk of explosion is not present, will not interfere existing heating furnace or incinerator
It operates normally.
In the present invention, exhaust gas needs to be introduced into gas mixer after step (3) diesel oil absorbs, the air distribution with selected heating furnace
Air is sufficiently mixed, to prevent the explosive air mass of the excessively high formation of local concentration.
The present invention be used for above-mentioned organic exhaust gas incineration treatment method processing unit, including waste gas stream meter, air door,
Waste gas inducing equipment, diesel oil absorption equipment, lye absorption equipment, gas mixer, existing heating furnace air distribution blower and heating furnace,
Waste gas stream meter and air door maintain the stabilization of diesel oil absorption equipment pressure, draw for switching exhaust pipe and air pipe line
Gas equipment is used to absorb organic matter, the organic sulfide in exhaust gas for introducing exhaust gas into diesel oil absorption equipment, diesel oil absorption equipment
Object and partial vulcanization hydrogen, so that the organic concentration of the exhaust gas of discharge diesel oil absorption equipment is stablized in 5000-35000mg/m3；Alkali
Liquid absorption equipment is used to absorb the remaining hydrogen sulfide in exhaust gas；Gas mixer is matched for exhaust gas after absorbing diesel oil with heating furnace
Wind air proportion is sufficiently mixed, and the organic concentration of gas after mixing is made to be less than 200mg/m3, oxidation stain material consumption oxygen amount is small
In 0.05%；Gas is sent into heating furnace burning disposal, purified gas qualified discharge by heating furnace air distribution blower after mixing.
In the present invention, when there is exhaust gas discharge in discharge region, exhaust gas flow conveys shutdown signal to air in respect of flow indication
Valve；When discharge region non-exhaust emission, waste gas stream meter issues signal, opens air door, introduces a certain amount of air and enters
Diesel oil absorption equipment, maintains the stabilization of diesel oil absorption equipment pressure, and ensures that organic concentration can be stablized after diesel oil absorbs
5000-35000mg/m3。
In the present invention, emergency interlocking is installed on the pipeline before gas mixer and on diesel oil absorption equipment outlet pipeline and is cut
Disconnected valve group and exhaust tube, when heating furnace air distribution blower stops, emergency switching-off valve group carries out interlocking switching, and cutting 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.
In the present invention, diesel oil absorption equipment and lye absorption equipment can be using the structurally and operationally items of this field routine
Part, such as uses material filling type absorption tower, and inner-tower filling material is conventional structured packing, preferably metal structured packing, more preferable metal step
Ring.
In the present invention, exhaust gas distributor can be set in organic exhaust gas and the well-mixed gas mixer of air distribution air,
To prevent the explosive air mass of the excessively high formation of local concentration.
In the present invention, on the pipeline before diesel oil absorption equipment discharge exhaust gas is mixed with air distribution air and discharge exhaust gas is extremely arranged
Fire arrester is set on the pipeline of inflator, enhances stability and safety.
Compared with prior art, the method for the present invention can achieve it is following the utility model has the advantages that
(1) uncertain in exhaust gas drain time and organic concentration by organic concentration in diesel oil Vapor recovery unit exhaust gas
In the case where, organic concentration can be made in exhaust gas from tens of thousands of to up to a million mg/m before processing3It is basically stable at that treated
5000~35000mg/m3, it is ensured that the stabilization of organic concentration in diesel oil absorption equipment pressure and subsequent processes, no
It needs to be arranged concentration and air balance equipment, the normal operation of existing heating furnace will not be interfered, security risk, Er Qieke is not present
With the hydrocarbons in the maximum amount of recycling exhaust gas, the organic sulfur compound and partial vulcanization hydrogen in exhaust gas are removed, especially suitable for
The processing of the sulfur-containing organic waste gas in evacuation time and the uncertain uncontrollable discharge source of organic concentration.
(2) drain time of high-concentration organic waste gas and organic concentration are unstable, such as with fuel gas or be directly entered plus
Hot stove, there are risk, safety is poor.For this purpose, organic exhaust gas is entered heating furnace with air by the present invention, by gas after mixing
Regulate and control while middle organic concentration and oxidation stain material consumption oxygen amount, do not need to set flammable gas alarm, it is ensured that safety
Burning.
(3) by the organic concentration in diesel oil Vapor recovery unit exhaust gas, and existing suitable heating furnace is selected with this concentration,
The concentration of organic matter when control exhaust gas enters heating furnace with air, in exhaust gas drain time and the uncertain situation of organic concentration
Under, it is ensured that the operation steady in a long-term of existing heating furnace, purified gas can qualified discharges.
(4) installation emergency interlocking cutting valve group on the pipeline before gas mixer and on diesel oil absorption equipment outlet pipeline
And exhaust tube, the pipe of exhaust gas to exhaust tube is discharged on the pipeline before exhaust gas is mixed with air distribution air and discharged in diesel oil absorption equipment
Fire arrester is set on road, further enhances the stability and safety of this method.
Detailed description of the invention
Fig. 1 is a kind of concrete technology flow process figure of the invention；
Wherein, 1- sulfur-containing organic waste gas, 2- waste gas stream meter, 3- Waste gas inducing equipment, 4- air, 5- air door, 6-
Diesel oil absorption equipment, 7- lye absorption equipment, 8- fire arrester, 9- heating furnace air distribution air, 10- gas mixer, 11- heating furnace
Air distribution blower, 12- heating furnace, 13- fire arrester, 14- emergency exhaust tube, 15,16- emergency interlocking cutting valve group.
Specific embodiment
The method of the present invention and device are described in detail below by attached drawing 1 and embodiment.
The processing unit of sulfur-containing organic waste gas of the present invention is as shown in Fig. 1, including waste gas stream meter 2, Waste gas inducing equipment
3, air door 5, diesel oil absorption equipment 6, lye absorption equipment 7, fire arrester 8, gas mixer 10, heating furnace air distribution blower
11, heating furnace 12, fire arrester 13, emergency exhaust tube 14, emergency interlocking cutting valve group 15 and 16.
The processing technological flow of sulfur-containing organic waste gas of the present invention is as shown in Fig. 1, and sulfur-containing organic waste gas 1 is set in Waste gas inducing
Under standby 3 driving, absorption processing is carried out into diesel oil absorption equipment 6, when organic exhaust gas stops discharging, waste gas stream meter 2 is sent out
Signal out opens air door 5, introduces air 4 and enters diesel oil absorption equipment 6, the gas after diesel oil absorbs has recycled big
Some hydrocarbon substance after being stripped of organic sulfur compound and partial vulcanization hydrogen, removes remaining hydrogen sulfide into lye absorption equipment 7,
Using fire arrester 8, in gas mixer 10, it is sufficiently mixed with heating furnace air distribution air 9, in heating furnace air distribution blower 11
Under driving, burning disposal is carried out into heating furnace 12, when heating furnace air distribution blower 11 stops working, then valve group is cut off in interlocking of meeting an urgent need
15, it 16 acting immediately, closes valve 15, stopping introduces exhaust gas into heating furnace, opens valve 16, and exhaust gas passes through fire arrester 13, by
Emergency 14 dump of exhaust tube.
Embodiment 1
Using the process of attached drawing 1 of the present invention, certain refinery's sour water tank discharge exhaust gas, discharge amount of exhaust gas 0-300m are handled3/
H, total hydrocarbon concentration 300-400g/m3, organic sulfur compound content is 100-2000mg/m3, H2S content is 10000-80000mg/
m3.It is absorbed using atmosphere 3rd side cut gas-oil, the liquid-gas ratio of absorption is 100L/m3, absorbing temperature is 35 DEG C, absorption pressure 100kPa,
The total hydrocarbon concentration of exhaust gas is 25000-30000 mg/m after absorption3.When storage tank apnea discharges gas (discharge amount of exhaust gas 0),
A certain amount of air is introduced, maintains the stabilization of diesel oil absorption equipment pressure, while air will take partial organic substances out of by diesel oil,
Stablize total hydrocarbon concentration in 5000-20000mg/m3.Diesel oil is absorbed in exhaust gas after absorbing using the sodium hydroxide solution of concentration 10%
Remaining hydrogen sulfide, total hydrocarbon concentration after absorption in exhaust gas is 25000-30000mg/m3, organic sulfur compound concentration is less than 20
mg/m3, hydrogen sulfide content is less than 10mg/m3.Selection air distribution air capacity is 105000m3After the heating furnace of/h or more absorbs lye
Gas carries out burning disposal, and the total hydrocarbon concentration of organic matter is less than 100mg/m after organic exhaust gas is mixed with air distribution air3, oxidation dirt
Material consumption oxygen amount is contaminated less than 0.028%.Exhaust gas after absorption-burning disposal can qualified discharge, discharge flue gas in non-methane total hydrocarbons concentration
Less than 20mg/m3.By longtime running (1 year or more), heating furnace and air distribution blower are in and operate normally, stability and safety
Property is good.
Embodiment 2
Using the process of attached drawing 1 of the present invention, certain refinery's sour water tank discharge exhaust gas, discharge amount of exhaust gas 0-500m are handled3/
H, total hydrocarbon concentration 200-400g/m3, organic sulfur compound content is 500-2500mg/m3, H2S content is 5000-80000mg/
m3.It is absorbed using atmosphere 3rd side cut gas-oil, the liquid-gas ratio of absorption is 100L/m3, absorbing temperature is 35 DEG C, absorption pressure 150kPa,
Total hydrocarbon concentration after absorption in exhaust gas is 22000-28000 mg/m3.When storage tank apnea discharges gas, (discharge amount of exhaust gas is
0) it, introduces a certain amount of air, maintains the stabilization of diesel oil absorption equipment pressure, while will to take part out of by diesel oil organic for air
Object stablizes total hydrocarbon concentration in 5000-20000mg/m3.Diesel oil is absorbed useless using the sodium hydroxide solution of concentration 15% after absorbing
Remaining hydrogen sulfide in gas, the total hydrocarbon concentration after absorption in exhaust gas are 22000-28000mg/m3, organic sulfur compound concentration is less than
20mg/m3, hydrogen sulfide content is less than 10mg/m3.Selection air distribution air capacity is 140000m3The heating furnace of/h or more absorbs lye
Gas carries out burning disposal afterwards, and the total hydrocarbon concentration of organic matter is less than 100mg/m after organic exhaust gas is mixed with air distribution air3, oxidation
Pollutant oxygen demand is less than 0.03%.Exhaust gas after absorption-burning disposal can qualified discharge, discharge flue gas in non-methane total hydrocarbons it is dense
Degree is less than 20mg/m3.By longtime running (1 year or more), heating furnace and air distribution blower are in and operate normally, stability and peace
Good perfection.
Embodiment 3
Using the process of attached drawing 1 of the present invention, certain refinery's oil product pans discharge exhaust gas, discharge amount of exhaust gas 0- are handled
300m3/ h, total hydrocarbon concentration 300-500g/m3, organic sulfur compound content is 500-2000mg/m3, H2S content is 5000-
80000mg/m3.It is absorbed using atmosphere 3rd side cut gas-oil, the liquid-gas ratio of absorption is 100L/m3, absorbing temperature is 8 DEG C, and absorption pressure is
100kPa, the total hydrocarbon concentration after absorption in exhaust gas are 10000-18000 mg/m3.(the exhaust gas row when storage tank apnea discharges gas
High-volume 0), to introduce a certain amount of air, the stabilization of diesel oil absorption equipment pressure is maintained, while air will take portion out of by diesel oil
Divide organic matter, stablizes total hydrocarbon concentration in 5000-20000mg/m3.Diesel oil uses the sodium hydroxide solution of concentration 10% after absorbing
Remaining hydrogen sulfide in exhaust gas is absorbed, the total hydrocarbon concentration after absorption in exhaust gas is 10000-18000mg/m3, organic sulfur compound concentration
Less than 20mg/m3, hydrogen sulfide content is less than 10mg/m3.Selection air distribution air capacity is 54000Nm3The heating furnace of/h or more is to diesel oil
Gas carries out burning disposal after absorption, and the total hydrocarbon concentration of organic matter is less than 100mg/m after organic exhaust gas is mixed with air distribution air3,
Oxidation stain material consumption oxygen amount is less than 0.028%.Exhaust gas after absorption-burning disposal can qualified discharge, discharge flue gas in non-methane it is total
Hydrocarbon concentration is less than 20mg/m3.By longtime running (1 year or more), heating furnace and air distribution blower are in and operate normally, stability
It is good with safety.
Comparative example 1
When the organic exhaust gas concentration of processing is higher, preferably enter incinerator with fuel gas, therefore have what embodiment 1 used
Machine exhaust gas enters incinerator with fuel gas.Since the total hydrocarbon concentration of the exhaust gas is 300-400g/m3, and exhaust gas is that interval is arranged
It puts, heating furnace burner hearth is mixed or be directly entered with fuel gas, fuel gas fluctuation is larger, to the normal operating shadow of existing heating furnace
Sound is very big.And exhaust gas, containing aerobic, there are risk of explosion.
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 with air distribution air quantity to be 140000Nm3/ h heating furnace air distribution be sufficiently mixed after enter heating furnace burn, exhaust gas with
Total hydrocarbon concentration after air distribution is sufficiently mixed is 712-1424mg/m3Although being far below 25%LEL(lower explosion limit), there is no safety
Hidden danger, but oxygen demand needed for burning this some of the contaminants is 0.20%~0.399%, then it can be to the normal operating of heating furnace
Influence is very big, is unable to maintain that operation steady in a long-term.And without diesel oil absorption processing also result in burning after SO2Content is super
Mark.
Comparative example 3
Process flow and operating condition with embodiment 2, the difference is that, if select with air distribution air quantity for
10000Nm3/ h heating furnace air distribution enters heating furnace after being sufficiently mixed and burns, and the total hydrocarbon after exhaust gas is sufficiently mixed with air distribution air is dense
Degree is 1048-1333mg/m3Although well below 25%LEL(lower explosion limit), security risk is not present, burns this part
Oxygen consumption needed for pollutant is 0.29%~0.37%, can be very big on the normal operating of existing heating furnace influence, is unable to maintain that length
Phase 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 to the stable operation for absorbing oil, causes the operation of diesel oil absorption equipment to be fluctuated, is unable to maintain that length
Phase stable operation.
Claims (16)
1. a kind of processing method of sulfur-containing organic waste gas, it is characterised in that including following content:
(1) when there is discharge exhaust gas, exhaust gas enters diesel oil absorption equipment through air inducing equipment, when without discharge exhaust gas, introduces certain
Amount air enters diesel oil absorption equipment, maintains the stabilization of diesel oil absorption equipment pressure, and stablizes the organic concentration in exhaust gas
5000-35000mg/m after treatment3；
(2) exhaust gas after diesel oil absorbs enters in lye absorption equipment, deviates from remaining sulfide in exhaust gas；
(3) by calculating step (2) discharge amount of exhaust gas and organic concentration, the suitably existing heating furnace of air quantity is matched in selection, it is desirable that
The organic concentration of gas is less than 200mg/m after exhaust gas is mixed with heating furnace air distribution air3, oxidation stain material consumption oxygen amount is less than
0.05%；
(4) under the premise of step (3), exhaust gas after step (2) absorption processing is introduced into gas mixer in proportion, and it is selected
The air distribution air of heating furnace is sufficiently mixed；
(5) gas is sent into heating furnace burning disposal, purified gas qualified discharge by air distribution blower after mixing.
2. according to the method described in claim 1, it is characterized by: sulfur-containing organic waste gas comes from petroleum chemical enterprise's raw material storage tank, acid
Property water pot area, alkaline residue acidification technique or the discharge of air sweetening technique at least one of exhaust gas, the discharge of such exhaust gas
Time and organic concentration are in dynamic change, and organic concentration is up to tens of thousands of mg/m3To mg/m up to a million3；Simultaneously containing highly concentrated
The sulfide of degree, concentration arrive hundreds of thousands mg/m thousands of3。
3. according to the method described in claim 1, it is characterized by: in step (1) when discharge region non-exhaust emission, in diesel oil
A certain amount of air is introduced in absorption equipment, diesel oil is contacted with air inversion, and diesel oil volatilizees on a small quantity, keeps the organic concentration of exhaust gas steady
It is scheduled on 5000-20000mg/m3Between.
4. according to the method described in claim 1, it is characterized by: the diesel oil of step (1) selects gas-oil, the Fu Chai after absorption
Oil absorber goes hydrotreating after mixing with hydrogenating materials.
5. method according to claim 1 or 4, it is characterised in that: joined in step (1) by being operated to diesel oil absorption equipment
Number is adjusted, the organic concentration after control absorbs in exhaust gas, to meet the requirement of step (1)；Main control parameters have: liquid
Gas ratio is 60-150L/m3, absorbing temperature is 5-40 DEG C, absorption pressure 20-200kPaG.
6. according to the method described in claim 5, it is characterized by: control liquid-gas ratio is 80-100L/m3, absorption temperature is 10-
35 DEG C, absorption pressure 50-150kPaG.
7. according to the method described in claim 1, it is characterized by: step (2) lye, which absorbs, uses sodium hydroxide solution, quality
Concentration is 10%-15%.
8. according to the method described in claim 1, it is characterized by: step (2) is by calculating step (1) discharge amount of exhaust gas and having
The suitably existing heating furnace of air quantity is matched in machine object concentration, selection, and maximum organic concentration is calculated in exhaust gas after being absorbed with diesel oil.
9. according to the method described in claim 1, it is characterized by: step (2) in select heating furnace operation operating condition it is good,
Fuel combustion is abundant, and the non-methane total hydrocarbons in flue gas is less than 20mg/m3, NOXLess than 100mg/m3, the heating furnace of selection is oil refining
Furnace, FCC waste heat boiler burn furnace, tail gas of sulphur incinerator or burn ammonia furnace.
10. according to the method described in claim 1, it is characterized by: step (2) control exhaust gas is mixed with heating furnace air distribution air
The organic concentration of gas is less than 100mg/m afterwards3, oxidation stain material consumption oxygen amount is less than 0.03%, and there is no risk of explosion, also not
Existing heating furnace or incinerator can be interfered to operate normally.
11. being used for the processing unit of any sulfur-containing organic waste gas processing method of claim 1-10, it is characterised in that: including
Waste gas stream meter, air door, Waste gas inducing equipment, diesel oil absorption equipment, lye absorption equipment, gas mixer, it is existing plus
Hot stove air distribution blower and heating furnace, waste gas stream meter and air door maintain diesel oil for switching exhaust pipe and air pipe line
The stabilization of absorption equipment pressure, for bleed equipment for introducing exhaust gas into diesel oil absorption equipment, diesel oil absorption equipment is useless for absorbing
Organic matter, organic sulfur compound and partial vulcanization hydrogen in gas, so that the organic concentration of the exhaust gas of discharge diesel oil absorption equipment is steady
It is scheduled on 5000-35000mg/m3；Lye absorption equipment is used to absorb the remaining hydrogen sulfide in exhaust gas；Gas mixer is used for bavin
Exhaust gas is sufficiently mixed with heating furnace air distribution air proportion after oil absorbs, and the organic concentration of gas after mixing is made to be less than 200mg/
m3, oxidation stain material consumption oxygen amount is less than 0.05%；Gas is sent into heating furnace burning disposal by heating furnace air distribution blower after mixing,
Purified gas qualified discharge.
12. device according to claim 11, it is characterised in that: when there is exhaust gas discharge in discharge region, exhaust gas flow in respect of
Flow indication conveys shutdown signal to air door；When discharge region non-exhaust emission, waste gas stream meter issues signal, opens
Air door introduces a certain amount of air and enters diesel oil absorption equipment, maintain the stabilization of diesel oil absorption equipment pressure, and ensures through bavin
Organic concentration is stablized in 5000-35000mg/m after oil absorbs3。
13. device according to claim 11, it is characterised in that: set on the pipeline before gas mixer with diesel oil absorption
Installation emergency interlocking cutting valve group and exhaust tube on standby outlet pipeline, when heating furnace air distribution blower stops, emergency switching-off valve group
Interlocking switching is carried out, cutting enters the valve group of gas mixer, opens exhaust gas to the valve group of exhaust tube, keeps exhaust gas straight by exhaust tube
Run in and puts.
14. device according to claim 11, it is characterised in that: diesel oil absorption equipment and lye absorption equipment use filler
Formula absorption tower, inner-tower filling material are metal structured packing.
15. device according to claim 11, it is characterised in that: organic exhaust gas and the well-mixed gas of air distribution air are mixed
Exhaust gas distributor is set in clutch, to prevent the explosive air mass of the excessively high formation of local concentration.
16. device according to claim 11, it is characterised in that: mixed in diesel oil absorption equipment discharge exhaust gas and air distribution air
Fire 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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| CN107376609A (en) * | 2017-08-29 | 2017-11-24 | 太仓市除尘设备厂 | A kind of flue gas ash removal filters heat utilization integrated technique |
| CN107899402B (en) * | 2017-11-28 | 2021-04-06 | 滨化集团股份有限公司 | Tail gas treatment method for chlorohydrination method propylene oxide device |
| CN107913590B (en) * | 2017-11-28 | 2021-06-01 | 滨化集团股份有限公司 | Tail gas treatment device of chlorohydrination method propylene epoxide device |
| CN111346471B (en) * | 2020-03-09 | 2021-01-05 | 山东大学 | Control method and system for industrial process waste gas treatment and cyclic utilization |
| CN112387102A (en) * | 2020-11-20 | 2021-02-23 | 宁夏源生生物科技有限公司 | Process and device for efficiently and environmentally treating waste gas and waste liquid in production process of propionyltrione and chloramine |
| CN114225680A (en) * | 2021-12-16 | 2022-03-25 | 安徽华塑股份有限公司 | Method for removing nitrogen oxide in kiln tail gas by using carbon dioxide catalytic conversion product |
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