CN211972006U

CN211972006U - Device for improving waste acid hydrocarbon removal

Info

Publication number: CN211972006U
Application number: CN202020437937.6U
Authority: CN
Inventors: 江洋
Original assignee: Hainan Hui Zhi Petrochemical Fine Chemical Co ltd
Current assignee: Hainan Hui Zhi Petrochemical Fine Chemical Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-20
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a device for improving waste acid dealkylation, which comprises a base; the top surface of the base is provided with a dealkylation tower, and the top end of the dealkylation tower is provided with a top plate with a cocatalyst adding port; the liquid inlet pipe is provided with a second switch valve and extends into the bottom of the dealkylation tower from one side downwards from the top plate; a hydrocarbon discharging pipe with a first switch valve penetrates through the rear side of the top surface of the hydrocarbon removing tower; a row of buckling cavities are formed in the left side and the right side of the dealkylation tower from top to bottom; a rotatable stirrer is arranged in the base through a motor from the bottom surface of the hydrocarbon removing tower upwards in a bearing matching mode; the stirrer is positioned in the hydrocarbon removing tower to form a stirring mechanism, and the two buckling cavities of the stirrer spray the power-assisted gas (such as hydrogen) to the positions, so that the diluted gas can be further diluted and the gas to be sprayed upwards can be diluted again, and finally, the three-time dilution effect is realized, the dilution efficiency is improved when the hydrocarbon gas generated in the sewage is removed outwards, and the finally discharged gas is discharged up to the standard.

Description

Device for improving waste acid hydrocarbon removal

Technical Field

The utility model relates to a take off hydrocarbon technical field, specifically be an improve spent acid and take off hydrocarbon device.

Background

An oil refinery generates acidic water during oil refining, the main component of the acidic water is water, harmful substances such as hydrogen sulfide, carbon dioxide, ammonia, phenol, cyanide and hydrocarbon are contained in the acidic water, the acidic water can be discharged after being treated, and a hydrocarbon removing device is often used for treating the acidic water.

Chinese patent application No. CN201822067575.1 discloses an acidic water dealkylation device for oil refinery, which comprises a dealkylation tank body, wherein a heat exchange tube is fixedly installed inside the dealkylation tank body, the right side of the heat exchange tube is communicated with a heat exchange water inlet tube positioned at the bottom of the dealkylation tank body, the right side of the dealkylation tank body is communicated with an acidic water inlet tube, and the bottom of the dealkylation tank body is communicated with a heat exchange water outlet tube positioned at the left side of the heat exchange water inlet tube.

Most of tank type hydrocarbon removing devices similar to the above existing structures remove hydrocarbon gas in water outward by means of reaction of internal circulation heating pipes and additives, then liquid water is heated only by circulation pipes after being injected, and the static hydrocarbon gas cannot be removed from the sewage rapidly, when a catalyst is added for use, the catalyst can only be dissolved in water, and the removed gas cannot be lifted, and the hydrocarbon removing rate is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improve spent acid and take off hydrocarbon device, the jar body formula that takes off hydrocarbon device most to solve current structure utilizes the mode that the internal circulation heating pipe used with the additive is anti-to make the hydrocarbon gas of aquatic outwards deviate from, then only through circulating pipe heating after the liquid water pours into and can not make the hydrocarbon gas of static state down restraint outwards deviate from in sewage soon, when adding the catalyst use, only can make the catalyst dissolve in aquatic and can not make when the gas that deviates from rises by the secondary dealkylation processing, consequently its lower problem of dealkylation speed.

In order to achieve the above object, the utility model provides a following technical scheme: a device for improving waste acid hydrocarbon removal comprises a base and a liquid inlet pipe; the top surface of the base is provided with a dealkylation tower, and the top end of the dealkylation tower is provided with a top plate with a cocatalyst adding port; the liquid inlet pipe is provided with a second switch valve and extends into the bottom of the dealkylation tower from one side downwards from the top plate; a hydrocarbon discharging pipe with a first switch valve penetrates through the rear side of the top surface of the hydrocarbon removing tower; a row of buckling cavities are formed in the left side and the right side of the dealkylation tower from top to bottom, and a side pipe penetrates through the outer sides of the two rows of buckling cavities together; the pipelines between the side pipes and the buckling cavities are provided with one-way valves; a rotatable stirrer is arranged in the base through a motor from the bottom surface of the hydrocarbon removing tower upwards in a bearing matching mode; the stirrer is positioned in the dealkylation tower to form a stirring mechanism; a liquid discharge pipe with a third on-off valve is also penetrated through the bottom end head of the dealkylation tower.

Further: the side pipes on the left side and the right side are connected with a corner pipe together, and the corner pipes are connected with a backward air receiving pipe.

Further: the top end of the inner cavity of the dealkylation tower is welded with a welding cabin, and the bottom of the welding cabin is welded with a filter plate.

Further: one side of the filter plate is provided with a circular through hole, and the liquid inlet pipe penetrates through the through hole and is inserted into the dealkylation tower.

Further: the filter plate is a sandwich plate with dense hemp filter holes, the sandwich plate is an active carbon type gas treatment plate, and the sandwich plate is positioned between a left buckling cavity and a right buckling cavity at the top side.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the inside of the dealkylation tower is provided with a stirrer, so that high-temperature sewage injected from the outside can be stirred, the reaction speed of the high-temperature sewage and a reactant added from the outside during dealkylation is accelerated, and the two sides of the dealkylation tower are also provided with a row of buckling cavities which can assist the gas for dealkylation from the outside, so that the gas for dealkylation from the outside can be mixed into the sewage injected into the dealkylation tower from the two sides, firstly, the sewage can form a wave making effect again to generate surging, and secondly, the hydrocarbon gas in the sewage is diluted outwards in a mode of assisting the reaction gas injected from the outside.

2. The top of the hydrocarbon removing tower is also provided with a welding cabin, the cabin bottom of the welding cabin is composed of an activated carbon plate, harmful gas which is diluted upwards can be further filtered and diluted, meanwhile, a catalyst can also be put into the welding cabin through a top feeding port, the hydrocarbon removing treatment is carried out again when the gas is discharged upwards, two sides of the welding cabin are just provided with two buckling cavities, and the boosting gas (such as hydrogen) which is sprayed into the buckling cavities from the two buckling cavities can further dilute and dilute the gas which is to be sprayed upwards again, so that the three-time dilution effect is finally realized, the dilution efficiency is improved when the hydrocarbon gas generated in the sewage is removed outwards, and the finally discharged gas is discharged up to the standard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the top plate of the present invention after being opened upward;

FIG. 3 is a schematic view of the inner structure of the utility model after being cut open;

FIG. 4 is a schematic structural view of the front plane of the present invention;

FIG. 5 is a schematic view of the welding chamber, the filter plate and the sandwich plate of the present invention;

in the figure: 1. a base; 2. a de-hydrocarbon tower; 3. a side tube; 4. a corner pipe; 5. buckling a cavity; 6. a one-way valve; 7. a hydrocarbon discharge pipe; 8. a first on-off valve; 9. a top plate; 10. a liquid inlet pipe; 11. a second on-off valve; 12. a gas receiving pipe; 13. a liquid discharge pipe; 14. a third on-off valve; 15. welding a cabin; 16. a filter plate; 17. a stirrer; 18. a sandwich panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 5, the present invention provides an embodiment: a device for improving waste acid hydrocarbon removal comprises a base 1 and a liquid inlet pipe 10; the top surface of the base 1 is provided with a dealkylation tower 2, and the top end of the dealkylation tower 2 is provided with a top plate 9 with a cocatalyst adding port; a second switch valve 11 is arranged on the liquid inlet pipe 10, and the liquid inlet pipe 10 extends into the bottom of the dealkylation tower 2 from one side downwards from the top plate 9; a hydrocarbon discharging pipe 7 with a first switch valve 8 penetrates through the rear side of the top surface of the hydrocarbon removing tower 2; a row of buckling cavities 5 are formed in the left side and the right side of the dealkylation tower 2 from top to bottom, and a side pipe 3 penetrates through the outer sides of the two rows of buckling cavities 5 together; a one-way valve 6 is also arranged on each pipeline between the side pipe 3 and the buckling cavity 5; a rotatable stirrer 17 is arranged in the base 1 through a motor from the bottom surface of the hydrocarbon removing tower 2 upwards in a bearing fit mode; the stirrer 17 is positioned in the dealkylation tower 2 to form a stirring mechanism; a liquid discharge pipe 13 with a third on-off valve 14 is also penetrated through the bottom end head of the hydrocarbon removing tower 2.

Wherein: the side pipes 3 on the left side and the right side are connected with a bent pipe 4 together, the bent pipes 4 are connected with a backward gas receiving pipe 12, the external gas of the existing catalytic reaction is introduced from the gas receiving pipe 12, the gas enters the left buckling cavity and the right buckling cavity 5 of the dealkylation tower 2 along the bent pipes 4, the gas and the sewage injected into the dealkylation tower 2 form a vortex effect in the buckling cavity as shown in figure 3, and the stirring effect generated by the stirrer 17 on the sewage injected into the dealkylation tower 2 is matched and is continuously mixed with the assisting gas entering the buckling cavity 5 in a vortex type, so that the existing hydrogenation type dealkylation effect is realized, the sewage continuously rolls due to the two reactions, the gas is separated upwards, the generated gas is upwards discharged after passing through the filter plate 16, and the filter plate 16 is the bottom part of the welding cabin 15, so that the catalyst material can be injected downwards from the feeding port of the top plate 9 in advance, the gas which is separated out upward is filtered by the activated carbon of the filter plate 16 and then separated out again upward by the reaction agent which is added at the top, wherein the reaction agent is the prior art and is disclosed as the prior additive in the process of processing hydrocarbon gas, and is not described here.

Wherein: circular shape through-hole has been seted up to one side of filter 16, feed liquor pipe 10 passes this through-hole and inserts in taking off hydrocarbon tower 2, consequently can see out outside lifting means and get into sewage when feed liquor pipe 10 pours into liquid by the bottom mode entering that upwards gushes into, consequently will form the surge effect by oneself after liquid itself gets into in taking off hydrocarbon tower 2 when annotating liquid, the income water mode under the surge state, the messenger gets into the outside output gas that sewage can be better in taking off hydrocarbon tower 2, be convenient for the harmful part in the above-mentioned mode diluent gas.

Wherein: as shown in figures 3 and 5, in order to improve the structural rationality, the gas ejected from the two buckling cavities 5 at the top is subjected to hydrogenation and hydrocarbon removal again with the finally separated gas for the last time, so that the filter plate 16 is not only a sandwich plate 18 with dense hemp filter holes, but also the sandwich plate 18 is an activated carbon type gas treatment plate, and the sandwich plate 18 is positioned between the two buckling cavities 5 at the top left and right.

The working principle is as follows:

the sewage at the bottom of the dealkylation tower 2 is injected into the existing external lifting equipment through the liquid inlet pipe 10 and slowly rises, the sewage continuously injected from the bottom in the rising process can make the sewage in the dealkylation tower 2 automatically generate a surging effect, at the moment, stronger gas can be generated in the dealkylation tower 2, the water injection is stopped when the sewage is injected to the bottom distance of the filter plate 16, the external lifting equipment is stopped, external hydrogen gas is connected, the other gas is introduced through the gas connecting pipe 12 and is distributed in the buckling cavities 5 at two sides, the hydrogen injected from two sides can form a vortex effect on the sewage stirred by the stirrer 17 from two sides, the aim of better upward discharge of the gas is achieved, the injected hydrogen gas and the hydrocarbon gas in the sewage can be mixed and diluted according to the existing hydrodealkylation technology, the gas produced in the sewage can rise under the action of the surging modes, the activated carbon type sandwich plate 18 on the filter plate 16 is used for dilution treatment, if catalyst materials are injected into the welding cabin 15 at the top of the filter plate 16 in advance, the gas separated upwards is filtered by the activated carbon of the filter plate 16 and then separated upwards again by the reaction agent added at the top, the gas separated upwards can be contacted with the hydrogen gas sprayed by the two buckling cavities 5 which are just corresponding to the two sides of the gas again, and the injected hydrogen gas can be subjected to final dehydrocarbon treatment again according to the existing hydrodecarbon technology, so that the device improves the diluted strength when the dehydrocarbon gas and the harmful gas in the sewage are discharged outwards, and finally the harmful gas in the sewage can be discharged up to the standard better.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A device for improving waste acid hydrocarbon removal is characterized in that: comprises a base (1) and a liquid inlet pipe (10); the top surface of the base (1) is provided with a dealkylation tower (2) with a cocatalyst addition port, and the top end of the dealkylation tower (2) is provided with a top plate (9); the liquid inlet pipe (10) is provided with a second switch valve (11), and the liquid inlet pipe (10) extends into the bottom of the dealkylation tower (2) from one side downwards from the top plate (9); a hydrocarbon discharging pipe (7) with a first switch valve (8) penetrates through the rear side of the top surface of the hydrocarbon removing tower (2); a row of buckling cavities (5) are formed in the left side and the right side of the dealkylation tower (2) from top to bottom, and a side pipe (3) penetrates through the outer sides of the two rows of buckling cavities (5) together; a one-way valve (6) is arranged on each pipeline between the side pipe (3) and the buckling cavity (5); a rotatable stirrer (17) is arranged in the base (1) in a way that the motor passes through the bottom surface of the self-dealkylation tower (2) and is upwards matched through a bearing; the stirrer (17) is positioned in the dealkylation tower (2) to form a stirring mechanism; a liquid discharge pipe (13) with a third on-off valve (14) is also penetrated through the bottom end head of the dealkylation tower (2).

2. An apparatus for improving spent acid dealkylation according to claim 1, wherein: a corner pipe (4) is connected between the side pipes (3) at the left side and the right side together, and the corner pipe (4) is connected with a backward air receiving pipe (12).

3. An apparatus for improving spent acid dealkylation according to claim 1, wherein: the top end of the inner cavity of the dealkylation tower (2) is welded with a welding cabin (15), and the bottom surface of the welding cabin (15) is welded with a filter plate (16).

4. An apparatus for improving spent acid dealkylation according to claim 3, wherein: one side of the filter plate (16) is provided with a circular through hole, and the liquid inlet pipe (10) penetrates through the through hole and is inserted into the dealkylation tower (2).

5. An apparatus for improving spent acid dealkylation according to claim 3, wherein: the filter plate (16) is a sandwich plate (18) with dense hemp filter holes, the sandwich plate (18) is an active carbon type gas treatment plate, and the sandwich plate (18) is positioned between the left buckling cavity and the right buckling cavity (5) at the top side.