CN218221790U - Non-condensable gas absorbing device - Google Patents

Abstract

The utility model discloses a noncondensable gas absorbing device belongs to the sewage treatment plant field. The non-condensable gas absorption device comprises an absorption tank, a packing layer is arranged in the absorption tank, an absorption cover is arranged above the packing layer, an absorption tank inlet gas-phase pipeline is arranged on one side of the absorption tank, and one end of the absorption tank inlet gas-phase pipeline penetrates through the absorption tank and the packing layer and is positioned below the packing layer; an overflow pipeline is arranged on the absorption tank; and the separation tank is connected with the absorption tank through an overflow pipeline. The utility model provides a noncondensable gas absorbing device can recycle after separating the extractant.

Description

Non-condensable gas absorbing device

Technical Field

The utility model relates to a sewage treatment plant field, in particular to noncondensable gas absorbing device.

Background

Water pollution is water that causes a reduction or loss in the use value of water due to harmful chemicals, and pollutes the environment. Acid, alkali and oxidant in the sewage, compounds such as copper, cadmium, mercury and arsenic, and organic poisons such as benzene, dichloroethane and ethylene glycol can kill aquatic organisms, and influence drinking water sources and scenic spots. When the organic matters in the sewage are decomposed by microorganisms, oxygen in the sewage is consumed, so that the life of aquatic organisms is influenced, and after dissolved oxygen in the sewage is exhausted, the organic matters are subjected to anaerobic decomposition to generate unpleasant gases such as hydrogen sulfide and mercaptan, so that the water quality is further deteriorated.

The extraction and treatment method of waste water belongs to one of the physicochemical treatment methods of waste water. In order to recover the dissolved pollutants in the sewage, a solvent (i.e., an extractant) which is immiscible with water but can dissolve the pollutants well is added into the sewage to be mixed with the sewage sufficiently, and most of the pollutants are transferred to a solvent phase because the solubility of the pollutants in the solvent is higher than that of the pollutants in the water. Then separating the sewage phase and the solvent phase to purify the sewage, separating the solvent phase (the pollutants and the solvent therein) to regenerate the solvent, and recovering the separated pollutants. The separation process is called extraction, the used solvent is called extractant, the extracted solvent is matched with an extract phase, and the extracted sewage phase is called raffinate phase. The solution obtained after the solvent is separated from the extract phase is called extract liquid.

In the process of treating process sewage, phenol and other organic matters in wastewater can be dissolved in an extracting agent by the extracting agent in the process of extracting wastewater, a small amount of ammonia gas and hydrogen sulfide can be absorbed, when the extracting agent is regenerated in a regeneration tower, the ammonia gas and the hydrogen sulfide enter non-condensable gas, the non-condensable gas is cooled by a water cooler, condensate liquid is continuously recycled, the other part of the non-condensable gas is discharged, but the non-condensable gas can also carry a part of the extracting agent and a small amount of toxic and harmful gases such as the ammonia gas and the hydrogen sulfide, and the carried extracting agent, the ammonia gas and the hydrogen sulfide and other toxic and harmful gases can be discharged when the extracting agent is discharged, so that the waste of the extracting agent is caused, and the environment can be polluted.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a noncondensable gas absorbing device recycles behind the extractant separation.

The utility model aims at providing a noncondensable gas absorbing device, include:

the absorption tank is internally provided with a packing layer, an absorption cover is arranged above the packing layer, one side of the absorption tank is provided with an absorption tank inlet gas phase pipeline, and one end of the absorption tank inlet gas phase pipeline penetrates through the absorption tank and the packing layer and is positioned below the packing layer; an overflow pipeline is arranged on the absorption tank;

a separation tank connected with the absorption tank through the overflow pipe.

Preferably, a water replenishing pipeline is arranged on the absorption tank and is arranged below the packing layer.

Preferably, the overflow pipeline is arranged above the gas phase pipeline at the inlet of the absorption tank.

Preferably, a sewage pipeline is arranged on the absorption tank and is arranged at the bottom of the absorption tank.

Preferably, the absorbing cover is made of organic polymer material.

Preferably, the absorption cover is a honeycomb-shaped absorption cover.

Preferably, the top of the absorption tank is provided with an absorption tank outlet gas phase pipeline.

Preferably, a water phase outlet pipeline and an extractant outlet pipeline are arranged on the separation tank.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model discloses an it absorbs to add the cellular absorption cover of dress in the adsorption tank, can be with the extractant that carries in the noncondensable gas to separate in the knockout drum, the extractant after the separation can cyclic utilization. The absorption tank is also provided with a packing layer, so that the retention time of the non-condensable gas in water is prolonged, the non-condensable gas can be further absorbed, and the emission of harmful gases such as ammonia gas, hydrogen sulfide and the like in the non-condensable gas is reduced;

(2) The utility model discloses an add cellular cage and packing layer of dress in the adsorption tank, not only can increase the absorption time of noncondensable gas, reduce harmful gas's emission, reduced the pollution of environment, accord with the green theory, can also absorb the extractant that carries in the noncondensable gas, separate back cyclic utilization, the used material of repacking cage and packing layer is simple and easy moreover, the low price, easy operation.

Drawings

Fig. 1 is a schematic structural view of a noncondensable gas absorption apparatus provided by the present invention;

FIG. 2 is a schematic view of the structure of an absorbent cover;

description of reference numerals:

1-an absorption tank gas phase outlet pipeline, 2-an absorption cover, 3-an absorption tank gas phase inlet pipeline, 4-a water replenishing pipeline, 5-an absorption tank, 6-an overflow pipeline, 7-a sewage discharge pipeline, 8-a packing layer, 9-a separation tank, 10-a water phase outlet pipeline and 11-an extractant outlet pipeline.

Detailed Description

In order to make the technical solutions of the present invention better understood for those skilled in the art, a detailed description of an embodiment of the present invention is provided below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the detailed description.

The utility model provides a noncondensable gas absorbing device, as shown in fig. 1-2, wherein, the arrow in fig. 1 indicates the direction that gas, water etc. flow in or flow out. The utility model discloses an absorption tank 5, be equipped with packing layer 8 in absorption tank 5, be equipped with the absorption cover 2 above packing layer 8, absorption tank 5's side top is equipped with absorption tank entry gas phase pipeline 3, the one end of absorption tank entry gas phase pipeline 3 runs through absorption tank 5 and packing layer 8, is located the below of packing layer 8; the absorption cover 2 is a honeycomb-shaped absorption cover, the absorption cover 2 is positioned below an overflow port formed in the absorption tank, and the material selected by the absorption cover 2 is organic polymer material, such as rubber, and is used for absorbing organic matters such as an extracting agent in non-condensable gas. Specifically, the absorption tank inlet gas phase pipeline 3 sends the treated noncondensable gas to the absorption tank 5, the packing layer 8 is arranged in the absorption tank 5, the absorption time of the noncondensable gas in the absorption tank 5 can be prolonged, the absorption of hydrogen sulfide and ammonia gas in the noncondensable gas can be improved, and one end of the absorption tank inlet pipeline 3 extends into the water of the absorption tank 5 and is located below the packing layer 8.

And a water replenishing pipeline 4 is arranged on the absorption tank 5, the water replenishing pipeline 4 is arranged below the packing layer 8, and the absorption tank 5 is replenished with water through the water replenishing pipeline. The water used by the absorption tank 5 is production water, and under normal conditions, the absorption tank 5 is kept in a flowing state by slightly opening the water feeding valve, so that the problem that pipelines such as a water replenishing pipeline, an overflow pipeline, a sewage discharge pipeline, a water phase outlet pipeline and the like in winter are easy to freeze with the tank body of the absorption tank 5 is solved, the absorption of non-condensable gas can be ensured, and the emission of harmful gas is reduced.

An overflow pipeline 6 and a sewage pipeline 7 are arranged on the absorption tank 5, the overflow pipeline 6 is arranged above the absorption tank inlet gas phase pipeline 3 and is slightly higher than the absorption tank inlet gas phase pipeline 3, namely is positioned at the middle upper part of the absorption tank 5, under normal conditions, as the produced water used by the absorption tank 5 is in a flowing state, in order to ensure the liquid level of the absorption tank 5, the produced water overflows to the separation tank 9 through the overflow pipeline 6, not only the liquid level of the overflow pipeline 6 is maintained, and the absorption efficiency of non-condensable gas is enhanced, but also the flowing water can be effectively prevented from freezing in winter, as the overflow pipeline 6 is positioned above the absorption cover 2, the water after absorbing the extracting agent can be sent to the separation tank 9, a water phase outlet pipeline 10 and an extracting agent outlet pipeline 11 are arranged on the separation tank, the water after absorbing the extracting agent is in the separation tank 9, the extracting agent and the water are automatically layered, a water layer is arranged at the middle upper layer and an organic layer is arranged at the lower layer of the separation tank 9, and the organic layer is respectively discharged from the water phase outlet pipeline 10 and the extracting agent outlet pipeline 11, and the organic layer is continuously recycled after being treated (namely, the extracting agent); the sewage pipeline 7 is positioned at the bottom of the absorption tank 5, and when the device stops or the absorption tank 5 is abnormally required to be maintained, all water in the absorption tank 5 is discharged.

The utility model discloses a noncondensable gas absorbing device specifically implements according to following step:

firstly, a liquid level is established for the absorption tank 5 through the water replenishing pipeline 4, and when the overflow pipeline 6 has a strand of outflow, a water feeding valve arranged on the water replenishing pipeline 4 is closed. The non-condensable gas enters the absorption tank 5 through the gas phase pipeline 3 at the inlet of the absorption tank, is fully absorbed in the absorption tank 5 and then is discharged into the atmosphere through the pipeline 1 at the outlet of the absorption tank. The packing layer 8 is arranged in the absorption tank 5, so that the residence time of the non-condensable gas is prolonged, the absorption of hydrogen sulfide and ammonia gas in the non-condensable gas is improved, and the emission of toxic and harmful gases is reduced; the environmental pollution is reduced, the honeycomb-shaped absorption cover 2 can absorb the extracting agent carried in the non-condensable gas, the absorbed water flows into the separation tank 9 through the overflow pipeline 6, an organic layer and a water layer in the separation tank 9 can be separated, and the separated extracting agent can be recycled;

meanwhile, the production water used in the absorption tank 5 is in a flowing state, so that the concentration of hydrogen sulfide and ammonia in the absorption liquid can be reduced all the time, the absorption efficiency is further improved, the flowing water can be effectively prevented from freezing, the possibility of freezing of pipelines and tank bodies in winter is reduced, the water after absorbing the extractant can be discharged to the separation tank 9 in time, and the extractant is separated in the separation tank 9 and then recycled. The method reduces the emission of toxic and harmful gases, accords with the national green development concept, is an effective measure for protecting the environment, and has the advantages of simple modification operation, simple selected materials and low modification cost.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the embodiments, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims (8)

1. A noncondensable gas absorbing apparatus, comprising:

the absorption tank (5) is internally provided with a packing layer (8), an absorption cover (2) is arranged above the packing layer (8), one side of the absorption tank (5) is provided with an absorption tank inlet gas-phase pipeline (3), and one end of the absorption tank inlet gas-phase pipeline (3) penetrates through the absorption tank (5) and the packing layer (8) and is positioned below the packing layer (8); an overflow pipeline (6) is arranged on the absorption tank (5);

a separation tank (9) connected to the absorption tank (5) via the overflow conduit (6).

2. The non-condensable gas absorption device according to claim 1, wherein a water replenishing pipeline (4) is arranged on the absorption tank (5), and the water replenishing pipeline (4) is arranged below the packing layer (8).

3. The noncondensable gas absorbing apparatus according to claim 1, wherein the overflow conduit (6) is provided above the canister inlet gas phase conduit (3).

4. The non-condensable gas absorbing apparatus according to claim 1, wherein a blow-down pipe (7) is provided on the absorption tank (5), and the blow-down pipe (7) is provided at the bottom of the absorption tank (5).

5. The non-condensable gas absorbing device according to claim 1, wherein the absorbing hood (2) is an absorbing hood made of an organic polymer material.

6. The non-condensable gas absorbing apparatus according to claim 1, wherein the absorbing hood (2) is a honeycomb-shaped absorbing hood.

7. The noncondensable gas absorption apparatus as claimed in claim 1, wherein the top of the absorption tank (5) is provided with a tank outlet gas phase pipe (1).

8. The non-condensable gas absorbing apparatus according to claim 1, wherein the separation tank is provided with an aqueous phase outlet line (10) and an extractant outlet line (11).

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