阅读说明：本技术 一种汽油脱硫醇油气高纯度回收方法 (High-purity recovery method for gasoline desulfurization alcohol oil gas ) 是由 张亚炎 田海峰 于 2021-07-10 设计创作，主要内容包括：本发明公开了一种汽油脱硫醇油气高纯度回收方法,属于石化技术领域,通过增设预过滤链来替换空气过滤器的方式,对杂质和油滴进行提前过滤,预过滤链在吸收饱和后触发自断动作实现自主脱落,剩余的预过滤链继续发挥过滤作用,过滤下杂质的油气从容器内出去经过常规的压缩冷凝处理进行液体回收,回收脱落下来的预过滤链对其储存的油进行解吸回收,提高油气的过滤效果及效率,降低后续的回收压力。(The invention discloses a high-purity recovery method of gasoline desulfurization alcohol oil gas, which belongs to the technical field of petrochemicals, impurities and oil drops are filtered in advance by adding a prefilter chain to replace an air filter, the prefilter chain triggers self-breaking action after absorption saturation to realize self-breaking, the rest prefilter chains continue to play a role in filtering, the oil gas of the filtered impurities is discharged from a container and subjected to conventional compression condensation treatment to recover liquid, the fallen prefilter chain is recovered to desorb and recover the oil stored in the prefilter chain, the filtering effect and efficiency of the oil gas are improved, and the subsequent recovery pressure is reduced.)

1. A high-purity recovery method of gasoline desulfurization alcohol oil gas is characterized by comprising the following steps: the method comprises the following steps:

s1, introducing the oil gas into a container containing a porous filtering material, and filtering impurities mixed with the oil gas;

s2, installing a plurality of densely distributed pre-filtering chains below the porous filtering material to filter impurities and oil drops;

s3, triggering self-breaking action to realize self-falling after the pre-filtering chains are saturated in absorption, and continuously playing a filtering role by the rest pre-filtering chains;

s4, removing the oil gas with the impurities filtered out from the container, and performing conventional compression condensation treatment to recover liquid;

and S5, recovering the fallen prefiltering chain to desorb and recover the stored oil.

2. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 1, characterized in that: the prefiltering chain includes multiunit filter unit, and filter unit end to end connects gradually, filter unit includes suspension rope (1), hydrosol layer (2) and adsorbs ball (3), and suspension rope (1), hydrosol layer (2) and adsorb ball (3) from last to connecting gradually down.

3. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 2, characterized in that: the oil guide fluff layer (4) is embedded and connected on the outer surface of the adsorption ball (3), and the oil absorption inner core (5) is filled in the adsorption ball (3).

4. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 3, characterized in that: the adsorption ball (3) comprises an upper hemisphere (31), a lower hemisphere (32) and a hot melt adhesive layer (33), wherein the upper hemisphere (31) and the lower hemisphere (32) are respectively and symmetrically connected to the upper end and the lower end of the hot melt adhesive layer (33).

5. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 4, characterized in that: the upper end of the lower hemisphere (32) is connected with a breaking promoting column (6), the breaking promoting column (6) penetrates through the oil absorption inner core (5) and is abutted against the inner wall of the upper hemisphere (31), and the upper hemisphere (31) is provided with micropores corresponding to the breaking promoting column (6).

6. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 5, characterized in that: the fracturing promoting column (6) comprises a sensing middle ball (61), an upper supporting column (62), a lower supporting column (63) and an expansion inner core (64), the upper supporting column (62) and the lower supporting column (63) are connected to the upper end and the lower end of the sensing middle ball (61) respectively, the expansion inner core (64) is filled in the sensing middle ball (61) at the inner side, a water pushing film (7) is connected to the joint of the upper supporting column (62) and the sensing middle ball (61), and deionized water is filled on the upper side of the water pushing film (7).

7. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 6, characterized in that: the sensing middle ball (61) is embedded and connected with a plurality of oil absorption fibers (8) which are uniformly distributed, and the expansion inner core (64) is made of an oil absorption expansion material.

8. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 6, characterized in that: the upper bracing column (62) and the lower bracing column (63) are both made of hard materials, and the upper bracing column (62) and the lower bracing column (63) are respectively of hollow and solid structures.

9. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 2, characterized in that: the adsorption balls (3) on the pre-filtering chain can be in the same size or in different sizes, and are arranged in the sequence from top to bottom when the sizes are different.

10. The method for recovering the gasoline desulfurization alcohol gasoline with high purity according to claim 1, characterized in that: the container also comprises a clear water layer positioned below the porous filtering material.

Technical Field

The invention relates to the technical field of petrochemistry, in particular to a high-purity recovery method of gasoline and desulfurized alcohol.

Background

With the development of industry and the continuous improvement of living standard of people, automobiles become one of the transportation means on which people rely gradually, and the increase of automobiles is increased year by year according to statistics, so the demand of gasoline is also increased year by year, most of the existing gasoline is inferior and has high content of sulfur alcohol, more sulfur-containing alcohol compounds in the gasoline are converted into sulfur oxide through combustion, and the sulfur oxide compounds cause serious influence on air after being discharged into the air, thereby accelerating the deterioration of air quality.

Therefore, the oil gas is filtered and recovered, which not only can reduce the waste of energy, but also can reduce the pollution to the environment, the invention of China with application number of 201810602112.2 discloses a gasoline sweetening oil gas recovery and recycling device, which comprises a sweetening gasoline inlet, wherein the sweetening gasoline inlet is arranged at one end of an oil collecting tank, the top of the oil collecting tank is provided with an air filter, an oil gas recovery bin is connected above the air filter, the middle of the oil gas recovery bin is horizontally fixed with a membrane separator, two ends of the membrane separator are connected with a fixed platform, the fixed platform is connected with the top of a mounting frame through bolts, and a main vent pipe is arranged in the middle of the oil gas recovery bin. The pollution to the atmospheric environment is reduced, the compressor can realize the refrigeration cycle of compression and evaporation on oil gas, and the condenser can be utilized to convert gas or vapor into liquid, thereby being convenient for the full recovery of the oil gas in the mercaptan-removed gasoline.

Although the invention can recycle oil gas, when impurities are filtered by the air filter, the filtering material in the air filter can be rapidly polluted and even corroded due to the characteristics of the oil gas, meanwhile, oil drops are easily adhered to the filtering material to reduce the filtering effect and the effect, and the oil gas has serious energy consumption in the final compression and condensation link, so that the recycling cost is high.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a high-purity recovery method of gasoline desulfurization alcohol oil gas, compared with the filtering mode of an air filter in the prior art, the design filters the oil gas by introducing a pre-filtering chain, adsorbs most impurities and oil drops in advance, protects a filtering material on one hand, can absorb and store most oil on the other hand, then automatically falls off to recover and desorb the oil gas, and reduces the subsequent recovery pressure.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A high-purity recovery method for gasoline desulfurization alcohol oil gas is characterized in that impurities and oil drops are filtered in advance by adding a prefilter chain to replace an air filter on the basis of the prior art, the prefilter chain triggers self-breaking action after saturation absorption to realize self-breaking, the rest prefilter chain continuously plays a role in filtering, the filtered oil gas containing the impurities is discharged from a container and subjected to conventional compression condensation treatment to recover liquid, and the recovered prefilter chain is used for desorbing and recovering the stored oil.

Further, the chain of prefiltering includes multiunit filter unit, and filter unit end to end connects gradually, filter unit includes suspension rope, hydrosol layer and adsorbs the ball, and suspension rope, hydrosol layer and adsorb the ball and from last to connecting gradually down, and multiunit filter unit can realize still having the filter action after one of them set of filter unit drops, and wherein suspension rope plays the connection effect, and the hydrosol layer triggers the action of droing of adsorbing the ball under specific condition, adsorbs the ball and can adsorb impurity and oil in the oil gas before droing.

Furthermore, an oil guide fluff layer is embedded and connected on the outer surface of the adsorption ball, an oil absorption inner core is filled in the adsorption ball, the oil guide fluff layer can be used for simultaneously adsorbing impurities and oil, the impurities can be adsorbed on the surface of the oil guide fluff layer, and the oil can be conveyed to the inner oil absorption inner core through the oil guide fluff layer for absorption and storage.

Further, adsorb the ball and include episphere, lower hemisphere and hot melt adhesive layer, episphere and lower hemisphere difference symmetric connection are in the upper and lower both ends of hot melt adhesive layer, and episphere and lower hemisphere can form a complete spheroid, can separate through hot melt adhesive layer when retrieving simultaneously to take out the oil absorption inner core and carry out the desorption to the oil of storing and retrieve.

Furthermore, the upper end of the lower hemisphere is connected with a breaking promoting column, the breaking promoting column penetrates through the oil absorption inner core and is abutted to the inner wall of the upper hemisphere, a micropore corresponding to the breaking promoting column is formed in the upper hemisphere, the breaking promoting column senses the oil absorption saturation degree of the oil absorption inner core, an internal expansion action is triggered when the oil absorption is saturated, then a small amount of water is conveyed to enter the micropore to dissolve the hydrosol layer, and therefore the falling action of the adsorption ball is achieved.

Furthermore, the breakage-promoting column comprises a sensing middle ball, an upper supporting column, a lower supporting column and an expansion inner core, wherein the upper supporting column and the lower supporting column are respectively connected to the upper end and the lower end of the sensing middle ball, the expansion inner core is filled in the sensing middle ball, a water pushing film is connected to the joint of the upper supporting column and the sensing middle ball, deionized water is filled on the upper side of the water pushing film, oil can exist on one side, close to the sensing middle ball, of the oil-absorbing inner core when the oil-absorbing inner core is saturated in oil absorption, then the expansion inner core is expanded in oil absorption to extrude the water pushing film, and a small amount of deionized water is conveyed to enter the micropores to dissolve the hydrosol layer, wherein the sensing middle ball and the lower supporting column play a role in.

Furthermore, a plurality of oil absorption fibers which are uniformly distributed are embedded and connected on the sensing central sphere, the expansion inner core is made of an oil absorption expansion material, after the oil absorption inner core is saturated in oil absorption, the oil absorption fibers can just convey oil to the inner expansion inner core to enable the oil to expand, and then water is released to dissolve the hydrosol layer and trigger the falling action of the adsorption sphere.

Further, go up the dagger and all adopt hard material to make with the lower dagger, and go up the dagger and be hollow and solid construction with the lower dagger respectively, the lower dagger is because so solid weight obviously is greater than the dagger, can improve the stability when adsorbing the ball and hanging, is difficult for arousing when oil gas process and rocks for the deionized water in the upper dagger is difficult to dissolve the hydrosol layer because of the slope mistake, improves the stability when adsorbing the ball and adsorbing.

Further, a plurality of adsorption balls on the prefiltering chain can be of the same size and also can be of different sizes, when the different sizes are arranged according to the sequence from top to bottom gradually increasing, the distribution is dense during the same size, the adsorption balls can be used for oil gas with more impurities, so that the adsorption effect is improved, when oil gas with less impurities is filtered, the adsorption balls with different sizes can ensure the filtration effect, and meanwhile, the impurities can accelerate the air inlet speed, and the adsorption balls just in time can be matched with the air inlet speed to keep the balance due to the greater reason stability.

Further, still including being located the clear water layer of porous filter material below in the container, the adsorption ball falls into the water layer after droing, is difficult for causing the damage on the one hand, prolongs its life, and on the other hand gets into the adsorption ball of aquatic, and the impurity of adhesion can drop the whereabouts and float to the surface of water on its surface oil guide fluff layer, both can unify the collection and directly rinse back recycle to oil guide fluff layer to impurity.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme filters oil gas through introducing the prefiltering chain, adsorbs overwhelming majority's impurity and oil drips in advance, and on the one hand protects filtering material, and on the other hand can absorb most oil and store, then independently drops and retrieve the desorption, reduces subsequent recovery pressure.

(2) Multiunit filter unit can realize still having the filter action after one of them set of filter unit drops in this scheme, and wherein the suspension rope plays the connection effect, and the hydrosol layer triggers the action of droing of adsorbing the ball under specific conditions, adsorbs the ball and can adsorb impurity and oil in the oil gas before droing.

(3) The promotion post in this scheme plays the oil absorption saturation degree of perception oil absorption inner core, triggers inside expansion action when the oil absorption is saturated, then carries a small amount of water to enter into the micropore and dissolves the hydrosol layer to realize adsorbing the action that drops of ball.

(4) Last stay post in this scheme and stay post down all adopt hard material to make, and go up the stay post and be hollow and solid construction respectively with the stay post down, the stay post is because so solid weight obviously is greater than last stay post, can improve the stability when adsorbing the ball and hanging, is difficult for arousing when oil gas process and rocks for the deionized water in the last stay post is difficult for dissolving the hydrosol layer because of the slope mistake, improves the stability when adsorbing the ball and adsorbing.

(5) A plurality of adsorption balls on the prefiltration chain in this scheme can also be for unidimensional for the same race, arrange according to the order of grow gradually from top to bottom for unidimensional, the distribution is more intensive during unidimensional, can be used for the more oil gas of impurity, thereby improve adsorption effect, when the less oil gas of impurity filters, filter effect had both been guaranteed when adopting the adsorption ball of unidimensional not, impurity is less simultaneously can accelerate air intake speed, and the adsorption ball just in time can with air intake speed match keep the equilibrium because great reason stability.

(6) Still including being located the clear water layer of porous filter material below in the container in this scheme, the adsorption ball falls into the water layer after droing, is difficult for causing the damage on the one hand, prolongs its life, and on the other hand gets into the adsorption ball of aquatic, and the impurity of adhesion can drop the whereabouts and float to the surface of water on its surface oil guide fluff layer, both can unify the collection and directly rinse back recycle to oil guide fluff layer to impurity.

Drawings

FIG. 1 is a first schematic diagram of a prefiltering chain according to the present invention;

FIG. 2 is a schematic flow chart of the present invention;

FIG. 3 is a schematic diagram of the prior art;

FIG. 4 is a first schematic diagram of the structure of the prefilter chain of the present invention during filtration;

FIG. 5 is a schematic view of the filter unit of the present invention;

FIG. 6 is a schematic view of the structure of the adsorption ball of the present invention;

FIG. 7 is a schematic view of a break stem structure of the present invention;

FIG. 8 is a schematic view of the structure of the adsorption ball of the present invention during separation;

FIG. 9 is a schematic structural view of the filter unit of the present invention when it is detached;

FIG. 10 is a schematic view of a water layer structure according to the present invention.

The reference numbers in the figures illustrate:

1 hanging rope, 2 hydrosol layers, 3 adsorption balls, 31 upper hemispheres, 32 lower hemispheres, 33 hot melt adhesive layers, 4 oil guide fluff layers, 5 oil absorption inner cores, 6 breaking columns, 61 sensing middle balls, 62 upper support columns, 63 lower support columns, 64 expansion inner cores, 7 water pushing films and 8 oil absorption fibers.

Detailed Description

In this embodiment 1, the technical solution will be clearly and completely described in conjunction with the disclosed drawings, so that the purpose, technical solution and beneficial effects of the embodiments of the present disclosure will be more clear. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" and similar words are intended to mean that the elements or items listed before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items. "upper", "lower", "inside", "outside", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1:

referring to fig. 1-2, on the basis of the prior art, impurities and oil droplets are filtered in advance by adding a prefilter chain to replace an air filter, the prefilter chain triggers self-breaking action after saturation absorption to realize self-breaking, the remaining prefilter chain continuously plays a role in filtering, oil gas with filtered impurities is discharged from a container and subjected to conventional compression condensation treatment to recover liquid, and the fallen prefilter chain is recovered to desorb and recover the oil stored in the prefilter chain.

Referring to fig. 5, the prefiltering chain includes a plurality of groups of filtering units, and the filtering units are connected end to end in sequence, the plurality of groups of filtering units can still have a filtering effect after one group of filtering units falls off, wherein the suspension rope 1 plays a role in connection, the hydrosol layer 2 triggers a falling action of the adsorption ball 3 under a specific condition, the adsorption ball 3 can adsorb impurities and oil in oil gas before falling off, an oil guiding fluff layer 4 is embedded and connected on the outer surface of the adsorption ball 3, the adsorption ball 3 is filled with an oil absorbing inner core 5, the oil guiding fluff layer 4 can adsorb the impurities and the oil at the same time, wherein the impurities can be adsorbed on the surface of the oil guiding fluff layer 4, and the oil can be transported to the inner oil absorbing inner core 5 through the oil guiding fluff layer 4 for absorption and storage.

Referring to fig. 1 and 8-9, the upper hemisphere 31 and the lower hemisphere 32 form a complete sphere, and can be separated by the hot melt adhesive layer 33 during recovery, so that the oil absorption inner core 5 is taken out to desorb and recover the stored oil, the breaking-up column 6 senses the oil absorption saturation degree of the oil absorption inner core 5, triggers an internal expansion action during oil absorption saturation, and then conveys a small amount of water into the micropores to dissolve the hydrosol layer 2, thereby realizing the falling-off action of the adsorption balls 3.

The micropore aperture is less, both can just can promote water and contact with hydrosol layer 2 and dissolve when the oil absorption of inflation inner core 64 takes place little inflation, also be difficult for leading to the desorption of oil with water contact after absorption ball 3 gets into the aquatic simultaneously.

The hot melt adhesive layer 33 can be attached by other means such as screw connection or snap connection.

Referring to fig. 7, when the oil absorption inner core 5 absorbs oil and is saturated, oil also exists on one side close to the sensing middle ball 61, then the expansion inner core 64 absorbs oil and expands to squeeze the water pushing film 7, and then a small amount of deionized water is conveyed into the micropores to dissolve the hydrosol layer 2, wherein the sensing middle ball 61 and the lower support column 63 play a role in limiting the expansion direction of the expansion inner core 64, after the oil absorption inner core 5 absorbs oil and is saturated, the oil absorption fiber 8 can convey oil to the internal expansion inner core 64 to enable the oil to expand, and then moisture is released to dissolve the hydrosol layer 2 and trigger the falling-off action of the adsorption ball 3.

Go up brace 62 and brace 63 and all adopt hard material to make down, and go up brace 62 and brace 63 and be hollow and solid construction respectively, brace 63 is because solid so weight obviously is greater than brace 62 down, can improve the stability when adsorbing ball 3 and hanging, is difficult for arousing when oil gas process and rocks for the deionized water in the brace 62 is difficult for dissolving hydrosol layer 2 because of the slope mistake, improves the stability when adsorbing ball 3 and adsorbing.

Referring to fig. 4, the adsorption balls 3 on the pre-filter chain may be of the same size or different sizes, and when the adsorption balls are arranged in the order of increasing from top to bottom, the adsorption balls are distributed densely when the adsorption balls are of the same size, and can be used for oil gas with more impurities, thereby improving the adsorption effect.

Referring to fig. 10, the container further includes a clear water layer located below the porous filter material, the adsorption balls 3 fall into the clear water layer after falling off, so that on one hand, the adsorption balls are not easily damaged and the service life of the adsorption balls is prolonged, and on the other hand, impurities adhered to the surface of the oil guide fluff layer 4 of the adsorption balls 3 entering the water fall off, fall and float to the water surface, so that the impurities can be collected uniformly and the oil guide fluff layer 4 can be directly cleaned and recycled.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.