CN213113231U

CN213113231U - Injection supercharged absorber

Info

Publication number: CN213113231U
Application number: CN202021094052.7U
Authority: CN
Inventors: 母荣新; 李永东; 张西同
Original assignee: Taian Tongxin Engineering Technology Co ltd
Current assignee: Taian Tongxin Engineering Technology Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-05-04
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses an injection pressure boost absorber belongs to desulfurization technical field, including liquid inlet, draw and penetrate room, induction port, nozzle, shrink tube, choke, diffusion tube, tail pipe, outlet pipe etc. and constitute. The liquid inlet, the injection chamber, the nozzle, the contraction pipe, the choke, the diffusion pipe and the tail pipe are arranged on a central line. The upper part of the injection supercharged absorber is an injection chamber, a liquid inlet is positioned in the injection chamber and is concentric with the injection chamber, and the tail end of the liquid inlet is provided with a nozzle. The side part of the injection chamber is connected with an air suction port which is vertical to the injection chamber. The lower part of the injection chamber is sequentially connected with a contraction pipe, a choke, a diffusion pipe and a tail pipe which are all concentric with the injection chamber. The tail end of the injection booster absorber is connected with an outlet pipe, and an angle of 135 degrees is formed between the outlet pipe and the horizontal plane. The utility model has the advantages of simple structure, job stabilization are reliable, the cost of manufacture is low, the absorption rate is high, easy operation maintenance and long service life, can use widely.

Description

Injection supercharged absorber

Technical Field

The utility model relates to a desulfurization technical field especially relates to an injection pressure boost absorber.

Background

Most of coal gas desulfurization units of the existing coal gasification devices adopt a wet oxidation desulfurization process, and most of the coal gas desulfurization units adopt a packed tower type. The packed tower is a widely used tower device for gas-liquid two-phase contact and mass transfer, and has the advantages of simple structure, high operation flexibility, stable operation, convenient manufacture and the like.

For H₂S content is less than or equal to 1500mg/Nm³The coal gas can be easily treated to 20mg/Nm by a single packed tower³The following. However, when H₂S content over 1500mg/Nm³Up to 2000mg/Nm³When the concentration is high, the concentration is treated to 20mg/Nm by only one packed tower³It is difficult to do the following.

To reach H₂S content is less than or equal to 20mg/Nm³The original technical design generally adopts the following two aspects: firstly, an empty tower (or a packed tower) is added in series; secondly, the height of the packing is increased by a single packed tower, and the spraying amount is increased;

but the disadvantages are: the power consumption and the operation cost of connecting an empty tower (or a filler) in series are high; the risk of tower blockage is easily caused by increasing the height of the packing layer, so that the system resistance is large, and finally, the power consumption is high and the operation cost is high.

In particular, in recent years, the tower diameter of a packed tower applied to wet desulphurization is becoming larger due to the large scale of the device, so that the original defects are more prominent (the tower diameter is large, the solution circulation amount is large, and the operation and adjustment are difficult); meanwhile, higher requirements are also put on the distribution and redistribution of gas and liquid.

SUMMERY OF THE UTILITY MODEL

The utility model provides an injection pressure boost absorber is based on this, and this absorber dress cooperates a packed tower to use on the gas piping of packed tower import. H of the injection supercharged absorber₂The S removal rate can reach 30-60%, and the H can be ensured by gas-liquid absorption in the packed tower₂The S removal rate reaches more than 99 percent. Meanwhile, the device has a pressurization effect and can pressurize the injection gas by 0-250 mm of water column; low-pressure gas desulfurizing and purifying system for gas-making equipment, especially for low-pressure gas (gas pressure below 10 kPa) of gas station₂And (4) removing S.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an injection supercharged absorber comprises a liquid inlet pipe, an injection chamber, an air suction port, a nozzle, a contraction pipe, a choke, a diffusion pipe, a tail pipe and an outlet pipe, wherein the liquid inlet pipe with the nozzle at the tail end is arranged in the injection chamber, and the lower end of the injection chamber is sequentially connected with the contraction pipe, the choke, the diffusion pipe, the tail pipe and the outlet pipe; the diameter of the contraction pipe is gradually reduced to be the same as that of the throat pipe, and the diameter of the diffusion pipe is gradually enlarged to be the same as that of the tail pipe; the tail pipe is connected with an outlet pipe which is bent towards the packed tower.

Furthermore, an air suction port is formed in the side surface of the injection chamber.

Furthermore, the spray head of the spray nozzle is a single hole or a plurality of holes.

Further, the nozzle is located within the convergent tube.

Furthermore, the liquid inlet pipe, the injection chamber, the nozzle, the contraction pipe, the throat pipe, the diffusion pipe and the tail pipe are arranged on a central line.

Furthermore, the outlet pipe comprises a bending section and a horizontal section, the included angle between the bending section and the horizontal plane is 135 degrees, and the horizontal section is vertical to the packed tower.

Has the advantages that: the gas-liquid contact time of the absorber of the utility model is short, which is suitable for the absorption of gas and the absorption process accompanied with rapid chemical reaction, and is a novel mass transfer device, which has the advantages of simple structure, high production intensity, stable operation, difficult blockage, convenient maintenance, etc. The design of efficient forward solution jet flow and injection gas flow makes the solution and gas fully contact in the forward direction, which not only improves the desulfurization efficiency, but also increases the pressure of the injection gas flow by more than about 500 Pa.

Drawings

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

in the figure: 1. the device comprises a liquid inlet pipe, 2 parts of an injection chamber, 3 parts of an air suction port, 4 parts of a nozzle, 5 parts of a contraction pipe, 6 parts of a choke, 7 parts of a diffusion pipe, 8 tail pipes and 9 parts of an outlet pipe.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, the following examples can be obtained:

an injection supercharging absorber comprises a liquid inlet pipe 1, an injection chamber 2, an air suction port 3,₁The jet chamber 2 is internally provided with a liquid inlet pipe 1 with a nozzle 4 at the tail end, and the lower end of the jet chamber 2 is sequentially connected with the contraction pipe 5, the choke 6, the diffusion pipe 7, the tail pipe 8 and the outlet pipe 9; the diameter of the contraction pipe 5 is gradually reduced to be the same as that of the throat pipe 6, and the diameter of the diffusion pipe 7 is gradually enlarged to be the same as that of the tail pipe 8; an outlet pipe 9 bent towards the packed tower is connected below the tail pipe 8. The liquid inlet pipe 1 with the nozzle 4 at the tail end is arranged in the injection chamber 2, the solution is sprayed out at a high speed through the nozzle 4, the surrounding space is vacuumized, the coal gas with low pressure entering the injection chamber 2 is taken away, and the coal gas and the gas are mixed through the throat pipe 6 to form a gas-liquid mixture, so that the mass transfer and the absorption are sufficient, the speed balance is realized, and the pressure rise is also accompanied. The gas-liquid mixture is discharged from the throat pipe 6, enters the diffusion pipe 7 and the tail pipe 8, and is further fully mixed and absorbed by mass transfer. The gas-liquid mixture after absorption enters the desulfurizing tower tangentially, gas-liquid separation is completed in the bottom space of the desulfurizing tower, and the coal gas rises to enter the packing section for continuous desulfurization. Absorption of H₂And the desulfurized rich solution after S falls to the bottom of the desulfurization tower by means of self-gravity, and then is regenerated for the next cycle.

An air suction port 3 is formed in the side surface of the injection chamber 2.

The spray head of the nozzle 4 is a single hole or a plurality of holes. The tail end of the liquid inlet pipe 1 is provided with the nozzle 4, the solution nozzle can be designed into a single hole or a plurality of holes according to the specific conditions of the amount of sucked coal gas and the amount of injected solution, the solution is injected in a high-efficiency forward solution jet flow and injection gas flow, the system resistance cannot be increased, the pressure of the injection gas flow can be increased by more than about 500Pa, and the solution injection nozzle is particularly suitable for the H of low-pressure coal gas (the coal gas pressure is less than 10 kPa) of the desulfurization of a coal gas station₂And (4) removing S.

The nozzle 4 is located within a shrink tube 5.

The liquid inlet pipe 1, the injection chamber 2, the nozzle 4, the contraction pipe 5, the throat pipe 6, the diffusion pipe 7 and the tail pipe 8 are arranged on a central line.

The outlet pipe 9 comprises a bending section and a horizontal section, the included angle between the bending section and the horizontal plane is 135 degrees, and the horizontal section is vertical to the packed tower.

The utility model has the advantages of simple structure, stable and reliable operation, low manufacturing cost, high absorption rate, transformation, convenient installation, time and labor saving and occupied area saving. The space of an inlet pipeline of the existing packed tower can be utilized to be modified and installed in the original desulfurization device; the newly-built device can be directly designed and installed on a gas pipeline at the inlet of the desulfurizing tower, so that the occupied area is saved.

The above, only be the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is familiar with the technical field of the present invention in the technical scope disclosed by the present invention, according to the technical solution of the present invention and the utility model, the concept of the present invention is equivalent to replace or change, and all covered in the protection scope of the present invention.

Claims

1. An injection supercharged absorber is characterized by comprising a liquid inlet pipe (1), an injection chamber (2), an air suction port (3), a nozzle (4), a contraction pipe (5), a choke (6), a diffusion pipe (7), a tail pipe (8) and an outlet pipe (9), wherein the liquid inlet pipe (1) with the nozzle (4) at the tail end is arranged in the injection chamber (2), and the lower end of the injection chamber (2) is sequentially connected with the contraction pipe (5), the choke (6), the diffusion pipe (7), the tail pipe (8) and the outlet pipe (9); the diameter of the contraction pipe (5) is gradually reduced to be the same as that of the throat pipe (6), and the diameter of the diffusion pipe (7) is gradually enlarged to be the same as that of the tail pipe (8); an outlet pipe (9) which is bent towards the packed tower is connected below the tail pipe (8).

2. The ejector supercharged absorber as claimed in claim 1, wherein an air suction port (3) is formed in the side face of the ejector chamber (2).

3. The injection booster absorber as claimed in claim 1, wherein the nozzle head of the nozzle (4) is single-hole or multi-hole.

4. Injection absorber according to claim 1, wherein the nozzle (4) is located in the shrink tube (5).

5. The ejector boost absorber according to claim 1, wherein the liquid inlet pipe (1), the ejector chamber (2), the nozzle (4), the convergent pipe (5), the throat (6), the diffuser (7) and the tail pipe (8) are on a central line.

6. The injection absorber as claimed in claim 1, wherein the outlet pipe (9) comprises a bent section and a horizontal section, the bent section forms an angle of 135 ° with the horizontal plane, and the horizontal section is perpendicular to the packed tower.