CN102489122A - Sulfur-bearing oil and gas mixture recovery process and device - Google Patents
Sulfur-bearing oil and gas mixture recovery process and device Download PDFInfo
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Abstract
Disclosed are a sulfur-bearing oil and gas mixture recovery process and a device utilizing the same. The sulfur-bearing oil and gas mixture recovery process includes: feeding sulfur-bearing oil and gas mixture into an adsorption tower and removing and adsorbing oil in gas in the mixture by adsorbent in the absorption tower; feeding sulfur-bearing mixture without oil and gas into a desulfurizing tower, removing sulfide mixed in the mixture further while exhausting cleaned gas from the top of the desulfurizing tower after the sulfide is removed; desorbing the adsorbent adsorbing oil and gas components in the adsorption tower under action of a vacuum pump, leading the oil and gas components which are desorbed into an absorbing tower, recovering oil and gas under action of the absorbent in the absorbing tower, feeding rich oil which is formed after the absorbent absorbing the oil and gas components into an oil storage tank to be recovered, while returning a small quantity of oil and gas which are not absorbed to the adsorption tower to be further adsorbed circularly. By the aid of the sulfur-bearing oil and gas mixture recovery process and the device utilizing the same, oil, gas and sulfide mixed in the sulfur-bearing oil and gas mixture can be removed, oil and gas are recovered, and meanwhile the difficult problem that environmental pollution caused by sulfide is solved. Accordingly, the sulfur-bearing oil and gas mixture recovery process and the device utilizing the same have the advantages of energy economization and environmental protection.
Description
Technical field
The present invention relates to the energy-conserving and environment-protective technical field; Be specifically related to a kind of sulfur-bearing gas mixture recovery method and device; The sulfur-bearing gas mixture that is mainly used in the processes such as, refining defeated to the collection of oil and products thereof, accumulating and sale is recycled, and removes sulfide wherein simultaneously.
Background technology
Contain a considerable amount of light components in oil and products thereof, like CH
4, C
2H
6, C
3H
8Deng.The data that the oil field provides shows that the quantity of crude oil Volatile Gas is quite huge, and national annual Volatile Gas total amount is at 1 * 109m
3More than, be about as much as one to two one-tenth that exploit total amount national natural gas year.If can all recycle these crude oil Volatile Gas, then can supply 1,000,000 uses of family more than 1 year, and they are discharged into all in the air, slattern in vain, very unfortunate.It is estimated that China's gasoline volatilization total amount in 2004 surpasses 300,000 tons, is roughly equal to 1,500,000,000 yuans.
In crude oil transmission, accumulating and the sales process, can also volatilize low molecular organic and inorganic sulfide: H simultaneously
2S and methyl mercaptan, ethyl mercaptan etc. make crude oil produce a kind of very niff and have very strong toxicity, to crude oil store, canned and transportation bringing very big problem aspect ecological and the environmental protection.Sulfide is colourless gas at normal temperatures, and intense stimulus property smell is arranged; Inflammable, form explosive mixture with the air mixing energy, chance naked light, high heat energy cause combustion explosion; Sulfide is strong neurotoxic substance, and mucous membrane is had the intense stimulus effect, and acute sulfide is poisoned general morbidity rapidly, and occurring with brain or respiratory system damage is master's clinical manifestation, and central nervous system damage is the most common.Stipulate exhaust of oil concentration≤25g/m in the tail gas after the crude Treatment in the discharging standards
3, hydrogen sulfide emission concentration≤0.03mg/m
3, methyl mercaptan concentration of emission≤0.004g/m
3Require the current of more and more strictness at ecological, environmental protective, press for the sulfide in the crude oil Volatile Gas is handled.
Existing gas mixture recovery technology is divided 5 kinds of basic skills by its operation principle:
(1) condensation method: sulfide is main with hydrogen sulfide, methyl mercaptan and ethyl mercaptan, and wherein, the sulfide boiling point is-60.4 ℃, and the methyl mercaptan boiling point is 7.6 ℃, and the ethyl mercaptan boiling point is 36.2 ℃, when the oil gas deep cooling to-80 ℃ the time, sulfide can be condensed and remove.
(2) absorption process: hydrogen sulfide is polar molecule, water-soluble, ethanol, gasoline, kerosene, crude oil; Methyl mercaptan is water insoluble, is dissolved in ethanol, ether etc.; Ethyl mercaptan is slightly soluble in water, is dissolved in most organic solvents such as ethanol, ether.
(3) membrane separation process: embrane method is to utilize oil gas different with the infiltration rate of constituent of air in film, comes separation oil and gas and air.
(4) firing method: in combustion gasses,, generate SO with the sulfide complete oxidation
2, get into aftertreatment device or press the emission standard of air pollutants for boilers execution.
(5) absorption method: adopt adsorbent to reclaim oil gas.
But, there is following problem in above-mentioned 5 kinds of gas mixture recovery technologies:
1. condensation method has increased sulfide to an equipment corrosion difficult problem.
2. normally kerosene, diesel oil or special-purpose absorption liquid of the de-oiling gas absorption liquid that adopts of absorption process, it requires the concentration of hydrogen sulfide in gas to want high, and the words removal efficiency of low concentration is low.
3. in membrane separation process, the infiltration rate of gas is relevant to the separation factor of gas with membrane material, and the film that U.S. Goler company produces is 80-120 to the separation factor of hydrogen sulfide, and organic sulfur is not still had concrete separation factor value.Oil gas reclaim requirement to membrane material have that resolution ratio is high, pressure drop is little, difficulty is aging, cheap and easy to get etc., but still do not have report at present than the membrane material that is used for Oil-gas Separation of maturation.
4. firing method is only as a kind of treatment measures of controlling exhaust of oil, but can not reclaim oil product, thereby do not have economic benefit, generally do not adopt.
5. the adsorbent of absorption method oil gas recovery employing at present has certain selectivity to the composition of oil gas: require can not contain compositions such as benzene, MTBE, acetone, mercaptan in the oil gas; Because these components can cause active carbon to lose efficacy very soon, cause absorption method that removing of sulphur-containing substance had certain limitation.
Summary of the invention
The object of the present invention is to provide a kind of sulfur-bearing gas mixture recovery method and device; De-oiling gas technology and desulfur technology are organically combined; Solved the problem that the sulfur-bearing gas mixture is administered effectively; Eliminate the stench in the fuel-air mixture, and recycled the oil gas in the sulfur-bearing gas mixture, advanced the process of industrialization of petrochemical industry cleaning, safety.
For achieving the above object, technical scheme of the present invention is following:
A kind of sulfur-bearing gas mixture recovery method may further comprise the steps:
(1) with sulfur-bearing gas mixture input adsorption tower, utilize the adsorbents adsorb in the adsorption tower to remove the oil gas in the mixture;
(2) remove sulfur-containing mixture behind the oil gas, get into desulfurizing tower, further remove the sulfide of carrying secretly in the mixture, the purified gas that removes behind the sulfide is discharged from the clean gas outlet at desulfurizing tower top;
(3) adsorbent of absorption oil-gas component gets into vavuum pump in the adsorption tower; And desorb under the effect of vavuum pump; The oil-gas component that desorbs gets into the absorption tower, begins to reclaim oil gas under the absorbent effect in the absorption tower; Absorbent gets into the oil storage tank recycling after absorbing oil-gas component, and unabsorbed a small amount of oil gas returns adsorption tower and is recycled absorption;
Further, in the above-mentioned steps (1), said adsorbent is selected from a kind of in active carbon, NACF (ACF), Concave-convex clay rod, carbon molecular sieve, macroporous absorbent resin, vulcanized rubber or the organic copolymer etc.
The preferred active carbon of said adsorbent, it is the ature of coal column, activated carbon particle size≤6 orders, carbon tetrachloride percentage by weight>=80%, iodine sorption value>=1100mg/g active carbon, hardness>=95, humidity≤4%.The active carbon that the present invention selected for use does not receive the influence of sulfide to the absorption of oil-gas component; And sulfide there is not suction-operated; And said active carbon can not lose efficacy because of containing sulfide in the inlet gas; Satisfy adsorption tower outlet oil gas qualified discharge, guarantee that active carbon service life is in scope of design.
In the above-mentioned steps (2), be selected from a kind of in desulphurized aetivated carbon, activated alumina, silica gel, molecular sieve, synthetic zeolite or the zinc oxide in order to the material that removes sulfide in the said desulfurizing tower.
In order to the preferred desulphurized aetivated carbon of the material that removes sulfide, it is the ature of coal column in the said desulfurizing tower, wherein, and activated carbon particle size≤5mm, carbon tetrachloride weight percentage>=60%, hydrogen sulfide adsorption capacity>=0.14gH
2The S/cc active carbon, hardness>=95, humidity between 10%-15%, reaction heat≤45 ℃.The used desulphurized aetivated carbon of the present invention has very high adsorption capacity to materials such as the hydrogen sulfide that can't remove in the standard carbon, mercaptan, sulfur dioxide, chlorine, hydrogen chloride, can guarantee desulfurizing tower outlet sulfide qualified discharge fully.
In the above-mentioned steps (2), said absorbent is normally oil-poor, conventional absorbent in kerosene, diesel oil, special-purpose absorption liquid or other oil gas recovery technologies.
A kind of sulfur-bearing gas mixture retracting device of the present invention; It comprises: adsorption tower; Be provided with sulfur-bearing gas mixture inlet, oil gas vent and sulfur-containing mixture outlet, and distinguish corresponding sulfur-bearing gas mixture inlet pipeline, oil gas vent pipeline, sulfur-containing mixture outlet conduit; Desulfurizing tower is provided with sulfur-containing mixture inlet and clean gas outlet; Wherein, the sulfur-containing mixture of said desulfurizing tower inlet is connected with the sulfur-containing mixture outlet conduit of said adsorption tower through pipeline; The absorption tower; Be provided with oil gas and enter the mouth, be not absorbed oil gas vent, absorbent inlet and oil-out; The oil gas inlet on said absorption tower is connected with the oil gas vent pipeline of said adsorption tower with vavuum pump through a pipeline, and the oil gas vent that is not absorbed on said absorption tower is connected with said adsorption tower sulfur-bearing gas mixture inlet duct through pipeline.
Further; The sulfur-bearing gas mixture inlet and the oil gas vent of said adsorption tower are an opening; And relative set one shared pipeline; The oil gas vent pipeline that is not absorbed on former corresponding adsorption tower sulfur-bearing gas mixture inlet, oil gas vent pipeline and absorption tower is connected to this common conduit altogether, on sulfur-bearing gas mixture inlet pipeline and the oil gas vent pipeline control valve is set respectively.
Connect the ultrasonic gas flow transmitter that real-time monitoring oil gas concentration of component and flow are set in the oil and gas pipes of said adsorption tower sulfur-bearing gas mixture inlet again.
In addition, connect the gas transmitter that NMHC concentration in the sulfur-containing mixture after real-time monitoring removes oil gas is set in the pipeline of said adsorption tower sulfur-containing mixture outlet.
The analysis of total sulfur appearance of real-time monitoring sulfide concentration is set in the clean gas outlet pipeline of said desulfurizing tower.
Connect in the pipeline of said adsorption tower sulfur-bearing gas mixture inlet duct, sulfur-containing mixture outlet conduit and said desulfurizing tower clean gas outlet and be equipped with spark arrester.
Described adsorption tower bottom, oil gas vent, pipeline are provided with leakage fluid dram; Described ultrasonic gas flow transmitter leading portion is provided with leakage fluid dram.
Said adsorption tower is provided with 2, an absorption, and another desorb is alternately switched and is used; Said desulfurizing tower is provided with 2, and one opens one is equipped with.
Through detecting, through the inventive method, the sulfur-bearing gas mixture behind adsorption tower absorption de-oiling gas, exhaust of oil concentration≤10g/m
3Behind the desulfurizing tower adsorption desulfurize, hydrogen sulfide and methyl mercaptan reach zero-emission in the desulfurizing tower outlet.
Major advantage of the present invention is:
1, existing oil-gas recovery method is not all considered the influence of sulfide to removal process except that absorption method, sulfide is not removed.The present invention organically combines de-oiling gas technology and desulfur technology; Efficiently solve the problem that removes of oil gas and sulfide in the fuel-air mixture; Solved the environmental pollution difficult problem that sulfide brings, the tail gas after the processing reaches discharging standards, has the advantage of energy-conserving and environment-protective.Simultaneously can not corrosiveness be arranged, require the cost of investment can not be too high, easy and simple to handle equipment,
2, the active carbon that the oil gas adsorbent is selected for use in the prior art requires can not contain compositions such as benzene, MTBE, acetone, mercaptan, the existence of these components in the oil gas; Make active carbon that charing, coking, polymerization take place under the effect of high heat of adsorption; The part chemisorbed occurs, fill out the active carbon effective apearture, can't holomorphosis; Thereby cause the circulation adsorption rate to reduce, directly influence the service life of active carbon.
Oil gas adsorbent-active carbon that the present invention selected for use does not have suction-operated to sulfide, can phenomenons such as carbonization, coking or polymerization not take place because of containing impurity sulfide in the gas mixture, thereby guarantee the service life of active carbon.
3, oil gas is reclaimed in the sustainable circulation of the present invention, has significant environmental benefit and economic benefit.
4, the present invention is simple to operate, security good.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
The specific embodiment
Further set forth the present invention below in conjunction with concrete embodiment.But embodiment only is used to the present invention is described and does not constitute limitation of the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.
Referring to Fig. 1, sulfur-bearing gas mixture retracting device of the present invention comprises:
Desulfurizing tower 2,2 ' (with desulfurizing tower 2 is example, and desulfurizing tower 2 ' is subsequent use) are provided with sulfur-containing mixture inlet 21 and clean gas outlet 22; Wherein, the sulfur-containing mixture of said desulfurizing tower inlet 21 is connected with the sulfur-containing mixture outlet conduit 12 of said adsorption tower through pipeline;
Connect the gas transmitter 7 that NMHC concentration in the sulfur-containing mixture after real-time monitoring removes oil gas is set in the said adsorption tower 1 sulfur-containing mixture outlet conduit 12.
Connect in the pipeline of said adsorption tower 1 sulfur-bearing gas mixture inlet, sulfur-containing mixture outlet conduit and said desulfurizing tower 2 clean gas outlets and be equipped with spark arrester 6,6 ', 6 ".
In the present embodiment; The sulfur-bearing gas mixture inlet 101 of said adsorption tower 1 is an opening with oil gas vent 103; And relative set one shared pipeline 14; Former corresponding adsorption tower sulfur-bearing gas mixture inlet 101, oil gas vent 103 and absorption tower are not absorbed oil gas vent pipeline 15 and are connected to this common conduit 14 altogether, on sulfur-bearing gas mixture inlet pipeline 11 and the oil gas vent pipeline 13 control valve are set respectively, open and close through those control valves and realize the turnover of switching controls adsorption tower 1 oil gas.
Sulfur-bearing gas mixture inlet pipeline 11 is provided with ultrasonic gas flow transmitter 5 and spark arrester 6, and sulfur-containing mixture outlet conduit 12 is provided with gas transmitter 7 and spark arrester 6 '; Desulfurizing tower 2 clean gas outlets 21 pipelines are provided with analysis of total sulfur appearance 8 and spark arrester 6 ".
Described ultrasonic gas flow transmitter 5 leading portions are provided with leakage fluid dram.Described adsorption tower bottom, oil gas vent, pipeline are provided with leakage fluid dram.
The used appointed condition of present embodiment is following:
1, adsorption tower: the oil gas adsorption section adopts 2 adsorption towers (adsorption tower 1 and 1 ').Adsorption tower diameter 2.4m, height 5.9m.Selecting active carbon for use is the ature of coal column, and particle diameter is 3mm, carbon tetrachloride percentage by weight 100%, and iodine sorption value 1200mg/g active carbon humidity is not more than 4%, and hardness is not less than 95.The total consumption of active carbon is 13.5t, and active-carbon bed 15min switches once.
2, desulfurizing tower: adopt 2 desulfurizing towers (desulfurizing tower 2 and 2 '), desulfurizing tower 2 ' is subsequent use, changes desulphurized aetivated carbon once in 1 year.The desulfurizing tower diameter is 2.0m, and desulphurized aetivated carbon carbon bed effective depth is 4m.This active carbon is the ature of coal column, and activated carbon particle size is 4mm, and the carbon tetrachloride percentage by weight is not less than 60%, and humidity is not more than 15%, and hardness is not less than 95, and the hydrogen sulfide adsorption capacity is 0.14gH
2The S/cc active carbon.Separate unit desulfurizing tower desulphurized aetivated carbon consumption is 6.3t.
3, absorption tower: an absorption tower 3, diameter are 1.5m, highly are 7.02m.
4, vavuum pump: adopt 1 NC2000 vavuum pump 4.
Sulfur-bearing gas mixture recovery method of the present invention comprises the steps:
(1) will receive and dispatch hydrocarbon, air, the steam that consists of C1 to C8 that contains that produces in the oily process; The sulfur-bearing gas mixture of hydrogen sulfide, methyl mercaptan, ethyl mercaptan etc. (wherein; The content of oil gas is 40% (v/v), and sulfide content is 80ppm, and operating temperature is-26～150 ℃; Operating pressure is-0.1～0.15MPa) input adsorption tower 1; Utilize the oil gas in the activated carbon of sorbent adsorbing and removing mixture, therebetween, the flow that ultrasonic gas flow transmitter 5 detects the sulfur-bearing gas mixture is Q=900m
3/ h, gas transmitter 7 detections remove NMHC concentration in the sulfur-containing mixture behind the oil gas;
(2) sulfur-containing mixture that removes behind the oil gas is discharged through the sulfur-containing mixture outlet 102 of adsorption tower 1; Get into desulfurizing tower 2 from sulfur-containing mixture inlet 21; And under the effect of adsorbent desulphurized aetivated carbon, further remove the sulfide of carrying secretly in the mixture; The purified gas that removes behind the sulfide is discharged from clean gas outlet 22,, is detected total sulphur concentration in the purified gas that removes behind the sulfide by analysis of total sulfur appearance 8 therebetween;
(3) adsorbent of absorption oil-gas component gets into vavuum pumps 4 through the oil gas vent of adsorption tower 103 in the adsorption tower 1, and desorb under the effect of vavuum pump 4, and the oil-gas component that desorbs is through the oil-feed gas 31 entering absorption towers 3 that enter the mouth; Oil-poor as absorbent through the absorbent 33 entering absorption towers that enter the mouth; Under the oil-poor effect of absorbent, begin to reclaim oil gas, form rich oil behind the oil-poor absorption oil-gas component of absorbent, get into oil storage tank through oil-out 34 and recycle, wherein, a small amount of oil gas of generation returns adsorption tower 1 and is recycled absorption.
The concentration of emission of table 1 embodiment and discharging standards
| Oil-gas component (g/m 3) | Hydrogen sulfide (mg/m 3) | Methyl mercaptan (mg/m 3) | |
| |
10 | 0 | 0 |
| Discharging standards | ≤25 | ≤0.03 | ≤0.004 |
Can find out from the foregoing description and table 1, adopt sulfur-bearing gas mixture recovery method of the present invention, the sulfur-bearing gas mixture behind adsorption tower absorption de-oiling gas, NMHC≤10g/m wherein
3, behind desulfurizing tower, sulfur vulcanization hydrogen and methyl mercaptan reach zero-emission in the sulfide, reach discharging standards fully.
Can also find out obviously that from the foregoing description the present invention not only can remove entrained oil gas in the fuel-air mixture, can also remove sulfide, the stench of mixture is reduced greatly, solve the environmental pollution difficult problem that sulfide brings, have the advantage of energy-conserving and environment-protective.
The above only is preferred embodiment of the present invention.It is to be noted; The type of adsorption tower, desulfurizing tower, absorption tower, vavuum pump, specification, design parameter; Be not limited to the record of the foregoing description, the user is using production occasion and processing to need to different, when using retracting device of the present invention and method; Can be according to different situation (like the type of gas mixture, character, treating capacity etc.), change the type, design parameter of adsorption tower, desulfurizing tower, absorption tower, vavuum pump etc.Those skilled in the art in field of the present invention, according to disclosed technology contents, can think easily and equivalence change, all should belong to protection category of the present invention.
Claims (12)
1. sulfur-bearing gas mixture recovery method may further comprise the steps:
1) with sulfur-bearing gas mixture input adsorption tower, utilize the adsorbents adsorb in the adsorption tower to remove the oil gas in the sulfur-bearing gas mixture;
2) remove sulfur-containing mixture behind the oil gas, get into desulfurizing tower, further remove the sulfide of carrying secretly in the sulfur-containing mixture, the purified gas that removes behind the sulfide is discharged from the clean gas outlet at desulfurizing tower top;
3) adsorption tower begins desorb under the effect of vavuum pump; The oil-gas component that desorbs gets into the absorption tower, the effect recover oil gas of absorbent in the absorption tower; Absorbent gets into the oil storage tank recycling after absorbing oil-gas component, and unabsorbed a small amount of oil gas returns adsorption tower and is recycled absorption.
2. sulfur-bearing gas mixture recovery method as claimed in claim 1 is characterized in that, said adsorbent is a kind of in active carbon, NACF, Concave-convex clay rod, carbon molecular sieve, macroporous absorbent resin, vulcanized rubber or the organic copolymer.
3. sulfur-bearing gas mixture recovery method as claimed in claim 2 is characterized in that, described active carbon, and it is the ature of coal column; Wherein, activated carbon particle size≤6 orders, carbon tetrachloride percentage by weight>=80%; Iodine sorption value>=1100mg/g active carbon, hardness>=95, humidity≤4%.
4. sulfur-bearing gas mixture recovery method as claimed in claim 1 is characterized in that, is a kind of in desulphurized aetivated carbon, activated alumina, silica gel, molecular sieve, synthetic zeolite or the zinc oxide in order to the material that removes sulfide in the said desulfurizing tower.
5. sulfur-bearing gas mixture recovery method as claimed in claim 4 is characterized in that, described desulphurized aetivated carbon, and it is the ature of coal column, wherein, activated carbon particle size≤5mm, carbon tetrachloride weight percentage>=60%, hydrogen sulfide adsorption capacity>=0.14gH
2The S/cc active carbon, hardness>=95, humidity between 10%-15%, reaction heat≤45 ℃.
6. a sulfur-bearing gas mixture retracting device is characterized in that, comprising:
Adsorption tower is provided with sulfur-bearing gas mixture inlet, oil gas vent and sulfur-containing mixture outlet,
And respectively corresponding sulfur-bearing gas mixture inlet pipeline, oil gas vent pipeline, sulfur-containing mixture outlet conduit;
Desulfurizing tower is provided with sulfur-containing mixture inlet and clean gas outlet; Wherein, the sulfur-containing mixture of said desulfurizing tower inlet is connected with the sulfur-containing mixture outlet conduit of said adsorption tower through pipeline;
The absorption tower; Be provided with oil gas and enter the mouth, be not absorbed oil gas vent, absorbent inlet and oil-out; The oil gas inlet on said absorption tower is connected with the oil gas vent pipeline of said adsorption tower with vavuum pump through a pipeline, and the oil gas vent that is not absorbed on said absorption tower is connected with said adsorption tower sulfur-bearing gas mixture inlet duct through pipeline.
7. sulfur-bearing gas mixture retracting device as claimed in claim 6; It is characterized in that; The sulfur-bearing gas mixture inlet and the oil gas vent of said adsorption tower are an opening; And relative set one shared pipeline, the oil gas vent pipeline that is not absorbed on former corresponding adsorption tower sulfur-bearing gas mixture inlet, oil gas vent pipeline and absorption tower is connected to this common conduit altogether, on sulfur-bearing gas mixture inlet pipeline and the oil gas vent pipeline control valve is set respectively.
8. sulfur-bearing gas mixture retracting device as claimed in claim 6 is characterized in that, connects the ultrasonic gas flow transmitter that real-time monitoring oil gas concentration of component and flow are set in the oil and gas pipes of said adsorption tower sulfur-bearing gas mixture inlet.
9. sulfur-bearing gas mixture retracting device as claimed in claim 6 is characterized in that, connects the gas transmitter that NMHC concentration in the sulfur-containing mixture after real-time monitoring removes oil gas is set in the pipeline of said adsorption tower sulfur-containing mixture outlet.
10. sulfur-bearing gas mixture retracting device as claimed in claim 6 is characterized in that, the analysis of total sulfur appearance of real-time monitoring sulfide concentration is set in the clean gas outlet pipeline of said desulfurizing tower.
11. sulfur-bearing gas mixture retracting device as claimed in claim 6 is characterized in that, connects in the pipeline of said adsorption tower sulfur-bearing gas mixture inlet duct, sulfur-containing mixture outlet conduit and said desulfurizing tower clean gas outlet to be equipped with spark arrester.
12., it is characterized in that described adsorption tower bottom, oil gas vent, pipeline are provided with leakage fluid dram like claim 6 or 8 described sulfur-bearing gas mixture retracting devices; Described ultrasonic gas flow transmitter leading portion is provided with leakage fluid dram.
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| CN109060590A (en) * | 2018-10-19 | 2018-12-21 | 河南理工大学 | Coal seam hydrogen sulfide gas assay system and measuring method |
| CN109060590B (en) * | 2018-10-19 | 2021-02-05 | 河南理工大学 | System and method for measuring content of hydrogen sulfide gas in coal seam |
| CN115141648A (en) * | 2022-06-29 | 2022-10-04 | 上海冠卓企业发展有限公司 | Oil gas recovery system and method |
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