CN106362547A - Sulfur-containing organic waste gas treatment method and sulfur-containing organic waste gas treatment apparatus - Google Patents
Sulfur-containing organic waste gas treatment method and sulfur-containing organic waste gas treatment apparatus Download PDFInfo
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Abstract
The invention discloses a sulfur-containing organic waste gas treatment method, which comprises that (1) when discharged gas exists, waste gas enters a diesel oil absorption device through an induced fan, and when discharged gas does not exist, a certain amount of air is introduced to maintain the stable pressure of the absorption device and make the organic matter concentration in the waste gas be stabilized at 5000-35000 mg/m<3> after treatment; (2) the absorbed waste enters an alkali liquid absorption device to remove the remaining sulfide in the waste gas; (3) by examining and calculating the waste gas emission amount and the organic matter concentration in the step (2), the existing heating furnace having an appropriate wind distribution amount is selected, and the organic matter concentration is less than 200 mg/m<3> and the oxygen consumption amount of the oxidation pollutant is less than 0.05% after the waste gas and the heating furnace wind distribution air are mixed; (4) under the premise of the step (3), the absorbed and treated waste gas in the step (2) is introduced into a gas mixer according to a certain ratio, and is completely mixed with the heating furnace wind distribution air; and (5) the mixed gas is conveyed into the heating furnace to burn, and the purified gas achieves the emission standard. According to the present invention, under the premise of the non-determined waste gas emission time and the non-determined organic matter concentration, the normal running of the heating furnace and the wind distribution fan cannot be interfered, and the explosion risk and the insecurity hidden danger do not exist.
Description
Technical field
The present invention relates to environmental protection technical field of waste gas treatment is and in particular to a kind of processing method and processing device of sulfur-containing organic waste gas.
Background technology
The complicated component of organic exhaust gas, produces serious harm to environment and the mankind, it has also become one of emphasis of China environmental protection work.Oil plant is during processing crude oil, some facilities inevitably give off substantial amounts of odor pollution waste gas, as sour water storage tank, semi-finished product oil product storage tank, sump oil storage tank, particularly sour water storage tank, air sweetening process tail gas etc., the waste gas component of loss is complicated, and in waste gas, odorant pollutant comprises hydrogen sulfide, organic sulfur compound, benzene homologues and other vocs(volatile organic matter) etc. component.This waste gas not only causes the odor pollution of surrounding enviroment, and health is threatened, and causes a large amount of hydrocarbon resources to waste.Particularly this kind of waste gas belongs to uncontrollable discharge polluter, and drain time, discharge capacity and pollutant levels are all uncertain, purifies difficulty larger.
At present, administering the commonplace method of organic exhaust gas both at home and abroad has absorption method, absorption process, condensation method, oxidizing process, biological treatment etc., occurs in that some new techniques in recent years again, such as the comprehensive treatment technique such as membrane separation process, light decomposition method and adsoption catalysis oxidation.Combustion method is higher than totally absorption process and absorption method to the removal efficiency of organic exhaust gas, it has also become the important means of VOCs treatment.Combustion method is the organic waste-gas purification method comparing thoroughly, in oil plant, processes organic exhaust gas using existing heating furnace, incinerator, catalytic cracking regenerator and co boiler, torch etc., investment is little, and purification efficiency is high.Current combustion method mainly has common flame combustion, catalysis burning, heat-accumulation combustion, heat-storage catalytic burning, boiler heating power burning etc..Common flame combustion is to send into the waste gas of organic gas in the combustion furnace having flame, so that combustible component is burnt, changes into carbon dioxide and water, this method treatment effeciency height, but high energy consumption, and operating cost is too high, and in waste gas, a large amount of hydrocarbon resources waste.Boiler heating power combustion technology refers to, using existing confession electric boiler, heating boiler or the special heating furnace of other non-exhaust-gas treatments or incinerator, the waste gas of generation is introduced directly into combustor, reaches the purpose removing pollutant in the case of the oil (gas) filling device that as far as possible reduces.This method has simple and practical, reduced investment, and operating cost is low, and removal efficiency height, moreover it is possible to bring certain economic benefit it is adaptable to VOCs treatment, uses more universal at present.
Cn103697482a discloses a kind of organic exhaust gas boiler heating power burning processing system and handling process, processing meanss include absorption plant, boiler fan, boiler, desulphurization denitration dust arrester and the chimney being sequentially connected with, on the premise of ensureing clean-up effect, processed by arranging demisting, emergent emission treatment and air balance are processed, and enhance stability and the safety of whole technique.But, the method only when exhaust gas concentration is less than the 1/4 of explosion limit, just can enter follow-up CIU and continue with, be only applicable to the process of low concentration organic exhaust gas.For high-concentration organic waste gas, because the LEL of most of Organic substances is in 20000～50000mg/m3, just can enter follow-up burning disposal in limited time because exhaust gas concentration to be controlled is less than 1/4 explosion limit, namely waste gas total hydrocarbon concentration is higher than 12500 mg/m3Waste gas all will directly from emergent floss hole discharge, do not reach processing intent.In addition, this device also needs to arrange special air balance process, and the absorption plant in this technique is to carry out pretreatment to the impurity in waste gas, granule and acidic materials it is impossible to reclaim the hydrocarbons in waste gas, a large amount of hydrocarbon resources are caused to waste, less economical.
Content of the invention
For the deficiencies in 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 passes through the organic concentration in diesel oil Vapor recovery unit waste gas, and existing suitable heating furnace is selected with this concentration, waste gas is controlled to enter organic concentration during heating furnace with air distribution air, in the case of waste gas discharge time and organic concentration are uncertain, normal operation without interference with heating furnace and its air distribution blower fan, no risk of explosion and hidden danger, after burning disposal, purified gas can qualified discharge.
The processing method of sulfur-containing organic waste gas of the present invention, including following content:
(1) when there being discharge waste gas, waste gas enters diesel oil absorption equipment through air inducing equipment, when no discharging waste gas, introduces a certain amount of air and enters diesel oil absorption equipment, maintain stablizing of diesel oil absorption equipment pressure, and make the basicly stable 5000-35000mg/m after treatment of the organic concentration in waste gas3；
(2) waste gas after diesel oil absorption enters in alkali liquor absorption equipment, remaining sulfide in abjection waste gas；
(3) pass through to adjust step (2) discharge amount of exhaust gas and organic concentration, select the suitably existing heating furnace of air distribution amount it is desirable to waste gas mix with heating furnace air distribution air after gas organic concentration less than 200mg/m3, preferably smaller than 100mg/m3, oxidation stain material consumption oxygen amount (in oxidation gaseous effluent, pollutant consume the oxygen amount of air distribution in the air) is less than 0.05%, preferably smaller than 0.03%；
(4) on the premise of step (3), after step (2) absorption is processed, waste gas is introduced in gas mixer in proportion, is sufficiently mixed with the air distribution air of selected existing heating furnace；
(5) after mixing, gas sends into heating furnace burning disposal, purified gas qualified discharge by air distribution blower fan.
In the present invention, sulfur-containing organic waste gas are essentially from the waste gas of the discharges such as petroleum chemical enterprise's raw material storage tank, acid water tank field, alkaline residue acidification technique, air sweetening technique, the drain time of such waste gas and organic concentration are in dynamic change, and its organic concentration typically may be up to tens of thousands of to up to a million mg/m3.Meanwhile, the sulfide (h also containing high concentration in this strand of waste gas2S and organic sulfur compound), its concentration is thousand of to hundreds of thousands mg/m3, diesel oil absorbs and can also remove organic sulfur compound and partial vulcanization hydrogen in waste gas.
In the present invention, when there is waste gas discharge discharge region, after absorbing through diesel oil, organic concentration can be stablized in 10000-35000mg/m3；When discharge region non-exhaust emission, diesel oil absorption equipment introduces a certain amount of air, maintain stablizing of diesel oil absorption equipment pressure, diesel oil is contacted with air inversion, diesel oil volatilizees, and the organic concentration of waste gas can be made to be basically stable at 5000-20000mg/m3Between.As can be seen here, the inventive method not only can ensure stablizing of organic concentration in diesel oil absorption equipment pressure and subsequent processes, and can the maximum amount of hydrocarbons reclaiming in waste gas and sulfide, the sulphur-containing exhaust gas being particularly well-suited to drain time and organic concentration uncertain uncontrollable discharge source process.
In the present invention, gas-oil selected by diesel oil, and including normal two wires gas-oil, atmosphere 3rd side cut gas-oil, catalytic cracking gas-oil, preferably normal two, three line gas-oil, the rich diesel oil absorbent after absorption goes hydrotreating after mixing with hydrogenating materials.By being adjusted to diesel oil absorption equipment operating parameter in step (1), control the concentration of Organic substance in waste gas after absorbing, to meet the requirement of step (1).Main control parameters have: liquid-gas ratio is 60-150l/m3, preferably 80-100l/m3；Absorb temperature and be 5-40 DEG C, preferably 10-35 DEG C；Absorption pressure is 20-200kpag, preferably 50-150kpag.
In the present invention, the waste gas after absorbing through diesel oil enters in alkali liquor absorption equipment, the remaining sulfide in abjection waste gas.Alkali liquor absorption adopts alkali liquor commonly used in the art, such as sodium hydroxide solution etc., and its mass concentration is preferably 10%-15%.
In the present invention, step (2) is passed through to adjust step (1) discharge amount of exhaust gas and organic concentration, selects the suitable heating furnace of air distribution amount, is generally adjusted with maximum organic concentration in waste gas after diesel oil absorption.The operation operating mode of the heating furnace selecting in step (2) is good, and fully, the NMHC in flue gas is less than 20mg/m for fuel combustion3, noxLess than 100mg/m3, can be oil refining process heating furnace, fcc waste heat boiler, burn stove, tail gas of sulphur incinerator, burn ammonia stove etc..In waste gas after being absorbed due to diesel oil, organic concentration is relatively stable, therefore selects existing suitable heating furnace it is not necessary to newly added equipment with this concentration, also normally runs without interference with existing heating furnace or incinerator.
In the present invention, organic exhaust gas enter heating furnace or incinerator etc. and process 3 kinds of modes, and one is to be directly entered combustor, and two is to enter with air, and three is to enter (coal-fired, oil burning boiler can not input) with fuel with fuel gas.First kind of way will ensure that the organic concentration in waste gas is less than the 25% of LEL lel or is much larger than UEL；The second way will ensure that the organic concentration in mixed gas is less than the 25% of LEL lel；The third mode will ensure that the organic concentration in mixed gas is much larger than UEL.Therefore, the relatively low waste gas of organic concentration preferably enters with air, and dense waste gas preferably enters with fuel gas.The present invention passes through the concentration of Organic substance in diesel oil Vapor recovery unit waste gas, selects the suitable heating furnace of air distribution amount, and after controlling waste gas to mix with heating furnace air distribution air gas organic concentration 200mg/m3, preferably smaller than 100mg/m3, oxidation stain material consumption oxygen amount is less than 0.05%, preferably smaller than 0.03%, can ensure that the organic concentration in mixed gas is far smaller than the 25% of LEL lel, waste gas can enter heating furnace with air, there is not risk of explosion, also normally run without interference with existing heating furnace or incinerator.
In the present invention, after step (3) diesel oil absorbs, waste gas needs to be introduced in gas mixer, is sufficiently mixed with the air distribution air of selected heating furnace, in case local concentration is too high forms explosive air mass.
The present invention is used for the processing meanss of above-mentioned organic exhaust gas incineration treatment method, including waste gas stream gauge, air door, Waste gas inducing equipment, diesel oil absorption equipment, alkali liquor absorption equipment, gas mixer, existing heating furnace air distribution blower fan and heating furnace, waste gas stream gauge and air door are used for switching exhaust pipe and air pipe line, maintain stablizing of diesel oil absorption equipment pressure, bleed equipment is used for introducing exhaust gas into diesel oil absorption equipment, diesel oil absorption equipment is used for absorbing the Organic substance in waste gas, organic sulfur compound and partial vulcanization hydrogen, so that the organic concentration discharging the waste gas of diesel oil absorption equipment is stablized in 5000-35000mg/m3；Alkali liquor absorption equipment is used for absorbing the remaining hydrogen sulfide in waste gas；After gas mixer is used for absorbing diesel oil, waste gas is sufficiently mixed with heating furnace air distribution air proportion, and after making mixing, the organic concentration of gas is less than 200mg/m3, oxidation stain material consumption oxygen amount is less than 0.05%；After mixing, gas sends into heating furnace burning disposal, purified gas qualified discharge by heating furnace air distribution blower fan.
In the present invention, when discharge region has waste gas to discharge, exhaust gas flow, in respect of flow indication, conveys shutdown signal to air door；When discharge region non-exhaust emission, waste gas stream gauge sends signal, opens air door, introduces a certain amount of air and enters diesel oil absorption equipment, maintain stablizing of diesel oil absorption equipment pressure, and guarantee that organic concentration can be stablized in 5000-35000mg/m after diesel oil absorption3.
In the present invention, emergent interlocking cut-out valve group and aiutage are installed on the pipeline before gas mixer and on the outer comb line of diesel oil absorption equipment, when heating furnace air distribution blower fan stops, emergency switching-off valve group carries out interlocking switching, cut-out enters the valve group of gas mixer, open waste gas to aiutage valve group, so that waste gas is directly discharged by aiutage.
In the present invention, diesel oil absorption equipment and alkali liquor absorption equipment can be using the conventional structurally and operationally conditions in this area, such as using material filling type absorption tower, and inner-tower filling material is conventional structured packing, preferably metal structured packing, more preferably metal step ring.
In the present invention, in organic exhaust gas and the well-mixed gas mixer of air distribution air, waste gas distributor can be set, in case local concentration is too high forms explosive air mass.
In the present invention, diesel oil absorption equipment discharge on the pipeline before waste gas mix with air distribution air and discharge waste gas to the pipeline of aiutage on setting spark arrester, enhanced stability and safety.
Compared with prior art, the inventive method can reach following beneficial effect:
(1) pass through organic concentration in diesel oil Vapor recovery unit waste gas, in the case of waste gas discharge time and organic concentration are uncertain, organic concentration can be made in waste gas from tens of thousands of to up to a million mg/m of before processing3Basicly stable 5000～35000mg/m after treatment3Can ensure that stablizing of organic concentration in diesel oil absorption equipment pressure and subsequent processes, do not need to arrange concentration and air balance equipment, normal operation without interference with existing heating furnace, there is not potential safety hazard, and can the maximum amount of reclaim waste gas in hydrocarbons, removing waste gas in organic sulfur compound and partial vulcanization hydrogen, be particularly well-suited to the process of the sulfur-containing organic waste gas in evacuation time and organic concentration uncertain uncontrollable discharge source.
(2) drain time of high-concentration organic waste gas and organic concentration are unstable, such as with fuel gas or be directly entered heating furnace, there is risk, poor stability.For this reason, organic exhaust gas are entered heating furnace with air by the present invention, after to mixing in gas organic concentration and while oxidation stain material consumption oxygen amount regulation and control it is not necessary to set flammable gas alarm it is ensured that safe combustion.
(3) pass through the organic concentration in diesel oil Vapor recovery unit waste gas, and existing suitable heating furnace is selected with this concentration, the concentration of Organic substance when controlling waste gas to enter heating furnace with air, in the case of waste gas discharge time and organic concentration are uncertain, can ensure that the operation steady in a long-term of existing heating furnace, purified gas can qualified discharge.
(4) emergent interlocking cut-out valve group and aiutage are installed on the pipeline before gas mixer and on the outer comb line of diesel oil absorption equipment, diesel oil absorption equipment discharge waste gas mix with air distribution air before pipeline on and discharge waste gas to the pipeline of aiutage on setting spark arrester, further enhance stability and the safety of the method.
Brief description
Fig. 1 is a kind of concrete technology flow process figure of the present invention；
Wherein, 1- sulfur-containing organic waste gas, 2- waste gas stream gauge, 3- Waste gas inducing equipment, 4- air, 5- air door, 6- diesel oil absorption equipment, 7- alkali liquor absorption equipment, 8- spark arrester, 9- heating furnace air distribution air, 10- gas mixer, 11- heating furnace air distribution blower fan, 12- heating furnace, 13- spark arrester, 14- meets an urgent need aiutage, and 15,16- meets an urgent need interlocking cut-out valve group.
Specific embodiment
Below by accompanying drawing 1 and embodiment, the inventive method and device are described in detail.
The processing meanss of sulfur-containing organic waste gas of the present invention as shown in Figure 1, cut off valve group 15 and 16 including waste gas stream gauge 2, Waste gas inducing equipment 3, air door 5, diesel oil absorption equipment 6, alkali liquor absorption equipment 7, spark arrester 8, gas mixer 10, heating furnace air distribution blower fan 11, heating furnace 12, spark arrester 13, emergent aiutage 14, emergent interlocking.
The processing technological flow of sulfur-containing organic waste gas of the present invention is as shown in Figure 1，Sulfur-containing organic waste gas 1 are under the driving of Waste gas inducing equipment 3，Enter diesel oil absorption equipment 6 and carry out absorption process，When organic exhaust gas stop discharge，Waste gas stream gauge 2 sends signal，Open air door 5，Introduce air 4 and enter diesel oil absorption equipment 6，Gas after diesel oil absorbs，Most of hydrocarbons are reclaimed，After being stripped of organic sulfur compound and partial vulcanization hydrogen，Enter alkali liquor absorption equipment 7 and remove remaining hydrogen sulfide，Again through spark arrester 8，In gas mixer 10，It is sufficiently mixed with heating furnace air distribution air 9，Under the driving of heating furnace air distribution blower fan 11，Enter heating furnace 12 and carry out burning disposal，When heating furnace air distribution blower fan 11 quits work，Interlocking of then meeting an urgent need cuts off valve group 15、16 actions immediately，Close valve 15，Stop introducing exhaust gas into heating furnace，Open valve 16，Waste gas is through spark arrester 13，By the dump of emergent aiutage 14.
Embodiment 1
Using the flow process of accompanying drawing 1 of the present invention, process certain refinery's sour water tank discharge waste gas, discharge amount of exhaust gas is 0-300m3/ h, total hydrocarbon concentration is 300-400g/m3, organic sulfur compound content is 100-2000mg/m3, h2S content is 10000-80000mg/m3.Absorbed using atmosphere 3rd side cut gas-oil, the liquid-gas ratio of absorption is 100l/m3, absorb temperature and be 35 DEG C, absorption pressure is 100kpa, after absorption, the total hydrocarbon concentration of waste gas is 25000-30000 mg/m3.When storage tank apnea discharge gas (discharge amount of exhaust gas is 0), introduce a certain amount of air, maintain stablizing of diesel oil absorption equipment pressure, air will take partial organic substances out of by diesel oil simultaneously, make total hydrocarbon concentration stable in 5000-20000mg/m3.Diesel oil adopts the sodium hydroxide solution of concentration 10% to absorb the remaining hydrogen sulfide in waste gas after absorbing, the total hydrocarbon concentration in waste gas after absorption is 25000-30000mg/m3, organic sulfur compound concentration is less than 20 mg/m3, hydrogen sulfide content is less than 10mg/m3.It is 105000m from air distribution air capacity3The heating furnace of/more than h carries out burning disposal to gas after alkali liquor absorption, organic exhaust gas mix with air distribution air after Organic substance total hydrocarbon concentration be less than 100mg/m3, oxidation stain material consumption oxygen amount is less than 0.028%.Waste gas after absorption-burning disposal can qualified discharge, discharge flue gas in NMHC concentration be less than 20mg/m3.Through longtime running (more than 1 year), heating furnace and air distribution blower fan are in normal operation, and stability and safety are good.
Embodiment 2
Using the flow process of accompanying drawing 1 of the present invention, process certain refinery's sour water tank discharge waste gas, discharge amount of exhaust gas is 0-500m3/ h, total hydrocarbon concentration is 200-400g/m3, organic sulfur compound content is 500-2500mg/m3, h2S content is 5000-80000mg/m3.Absorbed using atmosphere 3rd side cut gas-oil, the liquid-gas ratio of absorption is 100l/m3, absorb temperature and be 35 DEG C, absorption pressure is 150kpa, the total hydrocarbon concentration in waste gas after absorption is 22000-28000 mg/m3.When storage tank apnea discharge gas (discharge amount of exhaust gas is 0), introduce a certain amount of air, maintain stablizing of diesel oil absorption equipment pressure, air will take partial organic substances out of by diesel oil simultaneously, make total hydrocarbon concentration stable in 5000-20000mg/m3.Diesel oil absorbs remaining hydrogen sulfide in waste gas using the sodium hydroxide solution of concentration 15% after absorbing, and the total hydrocarbon concentration in waste gas after absorption is 22000-28000mg/m3, organic sulfur compound concentration is less than 20mg/m3, hydrogen sulfide content is less than 10mg/m3.It is 140000m from air distribution air capacity3The heating furnace of/more than h carries out burning disposal to gas after alkali liquor absorption, organic exhaust gas mix with air distribution air after Organic substance total hydrocarbon concentration be less than 100mg/m3, oxidation stain material consumption oxygen amount is less than 0.03%.Waste gas after absorption-burning disposal can qualified discharge, discharge flue gas in NMHC concentration be less than 20mg/m3.Through longtime running (more than 1 year), heating furnace and air distribution blower fan are in normal operation, and stability and safety are good.
Embodiment 3
Using the flow process of accompanying drawing 1 of the present invention, process certain refinery's oil product pans discharge waste gas, discharge amount of exhaust gas is 0-300m3/ h, total hydrocarbon concentration is 300-500g/m3, organic sulfur compound content is 500-2000mg/m3, h2S content is 5000-80000mg/m3.Absorbed using atmosphere 3rd side cut gas-oil, the liquid-gas ratio of absorption is 100l/m3, absorb temperature and be 8 DEG C, absorption pressure is 100kpa, the total hydrocarbon concentration in waste gas after absorption is 10000-18000 mg/m3.When storage tank apnea discharge gas (discharge amount of exhaust gas is 0), introduce a certain amount of air, maintain stablizing of diesel oil absorption equipment pressure, air will take partial organic substances out of by diesel oil simultaneously, make total hydrocarbon concentration stable in 5000-20000mg/m3.Diesel oil absorbs remaining hydrogen sulfide in waste gas using the sodium hydroxide solution of concentration 10% after absorbing, and the total hydrocarbon concentration in waste gas after absorption is 10000-18000mg/m3, organic sulfur compound concentration is less than 20mg/m3, hydrogen sulfide content is less than 10mg/m3.It is 54000nm from air distribution air capacity3The heating furnace of/more than h carries out burning disposal to gas after diesel oil absorption, organic exhaust gas mix with air distribution air after Organic substance total hydrocarbon concentration less than 100mg/m3, oxidation stain material consumption oxygen amount is less than 0.028%.Waste gas after absorption-burning disposal can qualified discharge, discharge flue gas in NMHC concentration be less than 20mg/m3.Through longtime running (more than 1 year), heating furnace and air distribution blower fan are in normal operation, and stability and safety are good.
Comparative example 1
When the organic exhaust gas concentration processing is higher, preferably enters incinerator with fuel gas, therefore the organic exhaust gas that embodiment 1 uses are entered incinerator with fuel gas.Because the total hydrocarbon concentration of this waste gas is 300-400g/m3, and waste gas is intermittent discharge, mixes or be directly entered heating furnace burner hearth with fuel gas, fuel gas fluctuation is larger, the normal operating of existing heating furnace is affected very big.And waste gas contains aerobic, there is risk of explosion.
Comparative example 2
, with embodiment 2, difference is not adopt diesel oil to absorb, and directly mixes with air distribution air for handling process and operating condition, if selecting with air distribution air quantity is 140000nm3/ h heating furnace air distribution enters heating furnace after being sufficiently mixed and burns, and the total hydrocarbon concentration after waste gas and air distribution are sufficiently mixed is 712-1424mg/m3Although being far below 25%lel(LEL), there is not potential safety hazard, but burn this oxygen consumption needed for partial contamination thing and be
0.20%～0.399%, then can be on the normal operating impact of heating furnace very greatly it is impossible to maintain operation steady in a long-term.And process without diesel oil absorption and also result in so after burning2Content overproof.
Comparative example 3
, with embodiment 2, difference is for handling process and operating condition, if selecting with air distribution air quantity is 10000nm3/ h heating furnace air distribution enters heating furnace after being sufficiently mixed and burns, and the total hydrocarbon concentration after waste gas and air distribution air are sufficiently mixed is 1048-1333mg/m3Although well below 25%lel(LEL), there is not potential safety hazard, but burn this oxygen consumption needed for partial contamination thing and be
0.29%～0.37%, can be on the normal operating impact of existing heating furnace very greatly it is impossible to maintain operation steady in a long-term.
Comparative example 4
Handling process and operating condition are with embodiment 2, difference is when storage tank no discharges gas, and do not introduce a certain amount of air, pressure in diesel oil absorption equipment cannot keep, pressure in absorption tower may be changed into normal pressure or even tiny structure, the change of tower pressure interior force has an impact to the stable operation absorbing oil, and lead to diesel oil absorption equipment runs fluctuation it is impossible to maintain operation steady in a long-term.
Claims (16)
1. a kind of processing method of sulfur-containing organic waste gas is it is characterised in that include following content:
(1) when there being discharge waste gas, waste gas enters diesel oil absorption equipment through air inducing equipment, when no discharging waste gas, introduces a certain amount of air and enters diesel oil absorption equipment, maintain stablizing of diesel oil absorption equipment pressure, and make the basicly stable 5000-35000mg/m after treatment of the organic concentration in waste gas3；
(2) waste gas after diesel oil absorption enters in alkali liquor absorption equipment, remaining sulfide in abjection waste gas；
(3) pass through to adjust step (2) discharge amount of exhaust gas and organic concentration, select the suitably existing heating furnace of air distribution amount it is desirable to waste gas mix with heating furnace air distribution air after gas organic concentration less than 200mg/m3, oxidation stain material consumption oxygen amount is less than 0.05%；
(4) on the premise of step (3), after step (2) absorption is processed, waste gas is introduced in gas mixer in proportion, is sufficiently mixed with the air distribution air of selected heating furnace；
(5) after mixing, gas sends into heating furnace burning disposal, purified gas qualified discharge by air distribution blower fan.
2. method according to claim 1, it is characterized in that: the waste gas that sulfur-containing organic waste gas discharge essentially from petroleum chemical enterprise's raw material storage tank, acid water tank field, alkaline residue acidification technique, air sweetening technique, the drain time of such waste gas and organic concentration are in dynamic change, and its organic concentration is up to tens of thousands of to up to a million mg/m3；Sulfide containing high concentration simultaneously, its concentration is thousand of to hundreds of thousands mg/m3.
3. method according to claim 1, it is characterized in that: in step (1) when discharge region non-exhaust emission, diesel oil absorption equipment introduces a certain amount of air, diesel oil is contacted with air inversion, diesel oil volatilizees on a small quantity, and the organic concentration of waste gas can be made to be basically stable at 5000-20000mg/m3Between.
4. method according to claim 1 it is characterised in that: gas-oil selected by the diesel oil of step (1), preferably normal two, three line gas-oil, and the rich diesel oil absorbent after absorption goes hydrotreating after mixing with hydrogenating materials.
5. the method according to claim 1 or 4 it is characterised in that: by being adjusted to diesel oil absorption equipment operating parameter in step (1), control the organic concentration in waste gas after absorbing, to meet the requirement of step (1)；Main control parameters have: liquid-gas ratio is 60-150l/m3, absorb temperature and be 5-40 DEG C, absorption pressure is 20-200kpag.
6. method according to claim 5 it is characterised in that: control liquid-gas ratio be 80-100l/m3, absorb temperature and be 10-35 DEG C, absorption pressure is 50-150kpag.
7. method according to claim 1 it is characterised in that: step (2) alkali liquor absorption adopts sodium hydroxide solution, mass concentration be 10%-15%.
8. method according to claim 1 it is characterised in that: step (2) is passed through to adjust step (1) discharge amount of exhaust gas and organic concentration, selects the suitably existing heating furnace of air distribution amount, and in waste gas after being absorbed with diesel oil, maximum organic concentration is adjusted.
9. method according to claim 1 it is characterised in that: the operation operating mode of the heating furnace selecting in step (2) is good, and fully, the NMHC in flue gas is less than 20mg/m for fuel combustion3, noxLess than 100mg/m3, the heating furnace of selection is oil refining process heating furnace, fcc waste heat boiler, burn stove, tail gas of sulphur incinerator or burn ammonia stove.
10. method according to claim 1 it is characterised in that: step (2) control waste gas to mix with heating furnace air distribution air after gas organic concentration less than 100mg/m3, oxidation stain material consumption oxygen amount be less than 0.03%, there is not risk of explosion, normally run without interference with existing heating furnace or incinerator yet.
11. processing meanss being used for the arbitrary described sulfur-containing organic waste gas processing method of claim 1-10, it is characterized in that: include waste gas stream gauge, air door, Waste gas inducing equipment, diesel oil absorption equipment, alkali liquor absorption equipment, gas mixer, existing heating furnace air distribution blower fan and heating furnace, waste gas stream gauge and air door are used for switching exhaust pipe and air pipe line, maintain stablizing of diesel oil absorption equipment pressure, bleed equipment is used for introducing exhaust gas into diesel oil absorption equipment, diesel oil absorption equipment is used for absorbing the Organic substance in waste gas, organic sulfur compound and partial vulcanization hydrogen, so that the organic concentration discharging the waste gas of diesel oil absorption equipment is stablized in 5000-35000mg/m3；Alkali liquor absorption equipment is used for absorbing the remaining hydrogen sulfide in waste gas；After gas mixer is used for absorbing diesel oil, waste gas is sufficiently mixed with heating furnace air distribution air proportion, and after making mixing, the organic concentration of gas is less than 200mg/m3, oxidation stain material consumption oxygen amount is less than 0.05%；After mixing, gas sends into heating furnace burning disposal, purified gas qualified discharge by heating furnace air distribution blower fan.
12. methods according to claim 11 it is characterised in that: when discharge region has waste gas to discharge, exhaust gas flow in respect of flow indication, conveys shutdown signal to air door；When discharge region non-exhaust emission, waste gas stream gauge sends signal, opens air door, introduces a certain amount of air and enters diesel oil absorption equipment, maintain stablizing of diesel oil absorption equipment pressure, and guarantee that organic concentration can be stablized in 5000-35000mg/m after diesel oil absorption3.
13. methods according to claim 11, it is characterized in that: emergent interlocking cut-out valve group and aiutage are installed on the pipeline before gas mixer and on the outer comb line of diesel oil absorption equipment, when heating furnace air distribution blower fan stops, emergency switching-off valve group carries out interlocking switching, cut-out enters the valve group of gas mixer, open waste gas to aiutage valve group, so that waste gas is directly discharged by aiutage.
14. methods according to claim 11 it is characterised in that: diesel oil absorption equipment and alkali liquor absorption equipment adopt material filling type absorption tower, and inner-tower filling material is metal structured packing.
15. methods according to claim 11 it is characterised in that: setting waste gas distributor in organic exhaust gas and the well-mixed gas mixer of air distribution air, in case local concentration is too high forms explosive air mass.
16. methods according to claim 11 it is characterised in that: diesel oil absorption equipment discharge on the pipeline before waste gas mix with air distribution air and discharge waste gas to the pipeline of aiutage on setting spark arrester, enhanced stability and safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434270.8A CN106362547B (en) | 2015-07-23 | 2015-07-23 | A kind of processing method and processing device of sulfur-containing organic waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510434270.8A CN106362547B (en) | 2015-07-23 | 2015-07-23 | A kind of processing method and processing device of sulfur-containing organic waste gas |
Publications (2)
| Publication Number | Publication Date |
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| CN106362547A true CN106362547A (en) | 2017-02-01 |
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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 |
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| CN107913590A (en) * | 2017-11-28 | 2018-04-17 | 滨化集团股份有限公司 | Propylene oxide by chlorohydrination device exhaust processing unit |
| CN111346471A (en) * | 2020-03-09 | 2020-06-30 | 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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| 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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