CN217961974U

CN217961974U - Natural gas purifies uses desulphurization unit

Info

Publication number: CN217961974U
Application number: CN202222171035.4U
Authority: CN
Inventors: 杜兴壮; 王明亮; 宫守峰; 孙硕
Original assignee: Qitaihe Baililang New Energy Co ltd
Current assignee: Qitaihe Baililang New Energy Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-06
Anticipated expiration: 2032-08-18

Abstract

The utility model belongs to the technical field of desulfurization, and particularly discloses a desulfurization device for purifying natural gas, which comprises a spraying shell, a filter, an air inlet pipeline and an exhaust pipeline; the top of the side face of the spraying shell is communicated with a communicating pipeline, the other end of the communicating pipeline is communicated with the interior of the filter, the other side of the filter is communicated with an air inlet pipeline, liquid storage tanks are symmetrically fixed at the top end of the spraying shell, sulfolane solution and diisopropylammonia solution are stored in the liquid storage tanks, a plurality of spray heads are transversely arranged at equal intervals at the top end of the interior of the spraying shell, the plurality of spray heads are communicated with the liquid storage tanks through pipelines, an exhaust pipeline is arranged on one side, away from the communicating pipeline, of the spraying shell, the bottom end of the spraying shell is communicated with a recovery assembly, and the recovery assembly comprises a recovery shell, a circulating pump and a treatment tank; the bottom end of the spraying shell is communicated with the inside of the recovery shell through a recovery pipeline, and a heating oil pipe is wound on the outer side of the recovery shell.

Description

Natural gas purifies uses desulphurization unit

Technical Field

The utility model relates to a desulfurization technical field specifically is a natural gas purifies uses desulphurization unit.

Background

Natural gas refers to all gases naturally existing in nature, including gases formed in various natural processes in an air space, a water space and a rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like), and synthetic feed gas prepared by taking natural gas as a raw material contains a certain amount of sulfide, mainly comprising two major types, namely inorganic sulfur, such as hydrogen sulfide (H2S) and organic sulfur, such as carbon disulfide (CS 2), mercaptan (RSH), sulfur Carbon Oxide (COS), thioether (R-S-R'), thiophene (CH 4S) and the like; the existence of sulfide can not only corrode equipment and pipelines, but also poison various catalysts, such as a natural gas steam conversion catalyst, a medium-temperature shift catalyst, a methanol synthesis catalyst, an ammonia synthesis catalyst and the like, which are easily poisoned by sulfide to lose activity, in addition, sulfur is an important chemical raw material and should be recovered, so the sulfide in the feed gas must be completely removed; the process of removing sulfides from the feed gas is called desulfurization.

The prior art provides a desulphurization unit for natural gas purification, and the publication number is: CN202122943880.4, which comprises a gas mixing chamber, a sulfur conversion chamber and a desulfurization chamber, wherein the top end of the gas mixing chamber is communicated with a first gas inlet pipe and a second gas inlet pipe, the lower part of the side wall of the gas mixing chamber is communicated with a first connecting pipe, the gas outlet end of the first connecting pipe is communicated with the lower part of the side wall of the sulfur conversion chamber, a plurality of catalytic plates are horizontally arranged in the sulfur conversion chamber, the outer wall of each catalytic plate is abutted against the inner wall of the sulfur conversion chamber, a placing cavity is arranged in each catalytic plate, and a plurality of vent holes are arranged on the top wall and the bottom wall of the placing cavity in a penetrating manner; the top end of the sulfur conversion chamber is communicated with a second connecting pipe, the gas outlet end of the second connecting pipe is communicated with the top wall of the desulfurization chamber, the bottom wall of the desulfurization chamber is communicated with a gas outlet pipe, and the gas outlet pipe is far away from the second connecting pipe; a desulfurizer is arranged in the desulfurization chamber; the device is provided with a sulfur conversion chamber and a desulfurization chamber, so that organic sulfur and inorganic sulfur can be effectively removed, and the aim of complete desulfurization is fulfilled, but the device has the following problems in actual use: the device need adopt a large amount of hydrogen to react at the during operation, but hydrogen explodes easily when using, causes the incident, and hydrogen can't retrieve after the reaction to lead to the cost increase of enterprise, can't promote on a large scale.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a natural gas purifies uses desulphurization unit to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a natural gas purification desulphurization device comprises a spray casing, a filter, an air inlet pipeline and an exhaust pipeline; the top of the side face of the spray shell is communicated with a communicating pipeline, the other end of the communicating pipeline is communicated with the inside of the filter, the other side of the filter is communicated with an air inlet pipeline, liquid storage tanks are symmetrically fixed at the top end of the spray shell, sulfolane solution and diisopropylammonia solution are stored in the liquid storage tanks, a plurality of spray heads are transversely arranged at equal intervals at the top end of the inside of the spray shell, the plurality of spray heads are communicated with the liquid storage tanks through pipelines, an exhaust pipeline is arranged on one side, away from the communicating pipeline, of the spray shell, the bottom end of the spray shell is communicated with a recovery assembly, and the recovery assembly comprises a recovery shell, a circulating pump and a treatment tank; the bottom end of the spraying shell is communicated with the inside of the recycling shell through a recycling pipeline, and a heating oil pipe is wound on the outer side of the recycling shell.

Preferably, the bottom end in the recycling shell is communicated with a first circulating pipeline, the other end of the first circulating pipeline is communicated with the inlet end of a circulating pump, and the outlet end of the circulating pump is communicated with the interior of the liquid storage tank through a second circulating pipeline.

Preferably, a vacuum pump is installed on one side of the top surface of the recovery shell and is communicated with the interior of the recovery shell through an air exhaust pipeline.

Preferably, the other side of the top surface of the recovery shell is communicated with an absorption pipeline, the other end of the absorption pipeline is inserted into the treatment tank, and absorption alkali liquor is arranged in the treatment tank.

Preferably, the inside both ends of filter are provided with first filter screen and second filter screen respectively, be provided with between first filter screen and the second filter screen and filter the adsorbed layer, it has a plurality of active carbon particles to filter the inside packing of adsorbed layer.

Preferably, a plurality of baffles are transversely arranged in the spraying shell below the spray head.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a mode that the shower nozzle sprayed is by sulfolane solution and diisopropyl alcohol ammonia solution carry out physical absorption and chemical absorption to the natural gas simultaneously to detach the sulphide that contains in the natural gas, reach good desulfurization effect, and the recovery liquid accessible that forms after the desulfurization intensifies the mode of decompression and makes its inside hydrogen sulfide and carbon dioxide emit, makes recovery liquid can reuse, can use widely.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. spraying the shell; 2. a communicating pipe; 3. a filter; 4. an air intake duct; 5. a liquid storage tank; 6. an exhaust duct; 7. a spray head; 8. a recovery pipeline; 9. recovering the shell; 10. heating the oil pipe; 11. a first circulation pipe; 12. a second circulation pipe; 13. a circulation pump; 14. a vacuum pump; 15. an absorption pipe; 16. a treatment tank; 17. a first filter screen; 18. a second filter screen; 19. filtering the adsorption layer; 20. and a baffle plate.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: a desulfurization device for purifying natural gas comprises a spray casing 1, a filter 3, an air inlet pipeline 4 and an exhaust pipeline 6, wherein a communication pipeline 2 is communicated and arranged at the top of the side face of the spray casing 1, the other end of the communication pipeline 2 is communicated with the inside of the filter 3, the filter 3 is used for primarily filtering the natural gas, the other side of the filter 3 is communicated with the air inlet pipeline 4, the air inlet pipeline 4 is used for introducing the natural gas, liquid storage tanks 5 are symmetrically fixed at the top end of the spray casing 1, sulfolane solution and diisopropanol ammonia solution are stored in the liquid storage tanks 5, the sulfolane solution has strong absorption capacity on hydrogen sulfide and organic sulfur, physical absorption on the hydrogen sulfide and the organic sulfur can be realized, the diisopropanol ammonia solution can chemically absorb the hydrogen sulfide and the carbon dioxide, the sulfolane solution and the diisopropanol ammonia solution are matched for use, the hydrogen sulfide and the organic sulfur in the natural gas can be physically absorbed and chemically absorbed, a plurality of spray nozzles 7 are transversely arranged at equal intervals at the top end in the spray casing 1, the plurality of spray nozzles 7 are communicated with the liquid storage tanks 5 through pipelines, the spray casing 7 and are used for spraying the natural gas, the exhaust pipeline 1 is provided with a plurality of spray baffles 20 for prolonging the exhaust pipeline 20;

the bottom end of the spraying shell 1 is communicated with a recovery assembly, and the recovery assembly comprises a recovery shell 9, a circulating pump 13 and a treatment tank 16; the bottom end of the spraying shell 1 is communicated with the inside of the recovery shell 9 through a recovery pipeline 8, a heating oil pipe 10 is wound on the outer side of the recovery shell 9, the heating oil pipe 10 is used for heating the recovery shell 9, a vacuum pump 14 is installed on one side of the top surface of the recovery shell 9, the vacuum pump 14 is communicated with the inside of the recovery shell 9 through an air exhaust pipeline, the vacuum pump 14 is used for reducing the pressure inside the recovery shell 9, hydrogen sulfide and carbon dioxide absorbed in recovery liquid are decomposed and released through heating and pressure reduction operations, the bottom end inside the recovery shell 9 is communicated with a first circulation pipeline 11, the other end of the first circulation pipeline 11 is communicated with the inlet end of a circulation pump 13, the circulation pump 13 is used for reintroducing the decomposed recovery liquid into the liquid storage tank 5 for recycling, the outlet end of the circulation pump 13 is communicated with the inside of the liquid storage tank 5 through a second circulation pipeline 12, the other side of the top surface of the recovery shell 9 is communicated with an absorption pipeline 15, the other end of the absorption pipeline 15 is inserted into the treatment tank 16, absorption alkali liquor is arranged inside the treatment tank 16, hydrogen sulfide and carbon dioxide gas are introduced into the treatment tank 16 through the absorption pipeline 15, and hydrogen sulfide and carbon dioxide gas are efficiently absorbed by absorption.

In this embodiment, the two ends inside the filter 3 are respectively provided with a first filter screen 17 and a second filter screen 18, a filtering and adsorbing layer 19 is arranged between the first filter screen 17 and the second filter screen 18, and the filtering and adsorbing layer 19 is filled with a plurality of activated carbon particles.

The working principle is as follows: during the use, natural gas at first gets into inside filter 3 through admission line 4, carry out preliminary filtration to natural gas through a plurality of active carbon particles of filter 3 inside packing, then get into spray casing 1 inside through communicating pipe 2, spray casing 1 inside by the dwell time of a plurality of baffles 20 extension natural gas that set up, a plurality of shower nozzles 7 that set up of the inside top of casing 1 spout sulfolane solution and diisopropyl alcohol ammonia solution blowout in the reservoir 5, thereby can all carry out physical absorption and chemical absorption to hydrogen sulfide and organic sulfur in the natural gas, in order to detach the sulphide in the natural gas, the natural gas after the desulfurization discharges through exhaust duct 6, and a plurality of shower nozzles 7 spun solution form the recovery liquid and let in recovery casing 9, heat up and heat by heating oil pipe 10 in recovery casing 9, carry out the decompression by vacuum pump 14 and bleed, make hydrogen sulfide and the carbon dioxide decomposition of absorbing in the recovery liquid and release, the recovery liquid after the decomposition is reintroduced into reservoir 5 through circulating pump 13, realize reuse, and hydrogen sulfide and carbon dioxide that release let in absorption pipeline 15 let in the processing groove 16 inside, carry out the hydrogen sulfide and carbon dioxide absorption gas absorption and carry out the efficient hydrogen gas absorption.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A desulphurization unit for natural gas purification is characterized in that: comprises a spray shell (1), a filter (3), an air inlet pipeline (4) and an exhaust pipeline (6); the top of the side face of the spraying shell (1) is communicated with a communicating pipeline (2), the other end of the communicating pipeline (2) is communicated with the interior of a filter (3), the other side of the filter (3) is communicated with an air inlet pipeline (4), liquid storage tanks (5) are symmetrically fixed at the top end of the spraying shell (1), sulfolane solution and diisopropanol ammonia solution are stored in the liquid storage tanks (5), a plurality of spray heads (7) are transversely arranged at equal intervals at the top end of the interior of the spraying shell (1), the plurality of spray heads (7) are communicated with the liquid storage tanks (5) through pipelines, an exhaust pipeline (6) is arranged on one side, away from the communicating pipeline (2), of the spraying shell (1), the bottom end of the spraying shell (1) is communicated with a recycling assembly, and the recycling assembly comprises a recycling shell (9), a circulating pump (13) and a treatment tank (16); spray casing (1) bottom and retrieve the inside intercommunication of casing (9) through recovery pipeline (8), it has heating oil pipe (10) to retrieve casing (9) outside winding.

2. The desulfurization device for natural gas purification according to claim 1, characterized in that: retrieve inside bottom intercommunication of casing (9) and have first circulating line (11), first circulating line (11) other end and circulating pump (13) entrance point intercommunication, circulating pump (13) exit end is through second circulating line (12) and the inside intercommunication of reservoir (5).

3. The desulfurization device for natural gas purification according to claim 1, characterized in that: and a vacuum pump (14) is installed on one side of the top surface of the recovery shell (9), and the vacuum pump (14) is communicated with the interior of the recovery shell (9) through an air exhaust pipeline.

4. The desulfurization device for natural gas purification according to claim 1, characterized in that: the other side of the top surface of the recovery shell (9) is communicated with an absorption pipeline (15), the other end of the absorption pipeline (15) is inserted into a treatment groove (16), and absorption alkali liquor is arranged in the treatment groove (16).

5. The desulfurization device for natural gas purification according to claim 1, characterized in that: the filter is characterized in that a first filter screen (17) and a second filter screen (18) are respectively arranged at two ends of the interior of the filter (3), a filtering and adsorbing layer (19) is arranged between the first filter screen (17) and the second filter screen (18), and a plurality of activated carbon particles are filled in the filtering and adsorbing layer (19).

6. The desulfurization device for natural gas purification according to claim 1, characterized in that: a plurality of baffles (20) are transversely arranged in the spraying shell (1) below the spray head (7).