CN219489719U

CN219489719U - Sulfur-containing sewage desulfurizing device for oil field

Info

Publication number: CN219489719U
Application number: CN202320748872.0U
Authority: CN
Inventors: 林桦; 李从延; 张文静; 钟育其
Original assignee: Sichuan Jiayu Oilfield Engineering Technology Service Co ltd
Current assignee: Sichuan Jiayu Oilfield Engineering Technology Service Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-08-08
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a sulfur-containing sewage desulfurization device for an oil field, which comprises a desulfurization tower, wherein the lower end of the desulfurization tower is communicated with a biological fluidization pool, and a water leakage bucket is arranged at the joint of the desulfurization tower and the biological fluidization pool; the top of the desulfurizing tower is provided with a tail gas absorber, a condenser, a liquid distributor, a filler and an active carbon layer are sequentially arranged in the desulfurizing tower from top to bottom, a water distribution pipe is arranged between the condenser and the liquid distributor, and an air supply pipe is arranged on the lower side of the active carbon layer; the biological fluidization tank is internally provided with a microorganism carrier, and the bottom of the biological fluidization tank is provided with a plurality of aeration heads. The method of combining ozone and active carbon is suitable for sulfur-containing sewage with various concentrations, and compared with pure air oxidation, ozone enters carbon pores to act with absorbed and enriched sulfur ions, and the ozone utilization rate is improved under the catalysis of the active carbon; ozone has stronger regeneration capability to active carbon, and can prolong the service life of the active carbon.

Description

Sulfur-containing sewage desulfurizing device for oil field

Technical Field

The utility model relates to the technical field of sewage desulfurization, in particular to a sulfur-containing sewage desulfurization device for an oil field.

Background

Natural gas of a Yu area gas field has higher concentration of hydrogen sulfide, and oilfield sewage after completion of the well often needs to be firstly subjected to sulfur removal, and because the sulfur-containing sewage has great influence on the normal operation of a sewage treatment structure, the sulfur-containing sewage is often pretreated or independently treated and then mixed with other waste water to enter a sewage treatment plant. The chemical oxidant sulfur removal technology is a traditional sewage sulfur removal technology, and in the application of oily sewage, the residual oxidant has stronger corrosiveness to equipment and pipelines due to incomplete sulfur removal and excessive dosage of agents caused by the influence of sediments in the pipelines and the equipment in the system. The aeration sulfur removal technology is characterized in that the air oxidation capability is relatively weak, partial sulfides in the sewage are not completely removed, and the technology is only aimed at sulfur removal in the sewage, and partial other pollutants can not be removed while sulfur removal is carried out, so that the sewage concentration is reduced, and the subsequent further treatment of the sewage is facilitated, and therefore, the sulfur-containing sewage desulfurization device for the oil field is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a sulfur-containing sewage desulfurization device for an oil field.

The utility model adopts the following technical scheme to realize the aim:

the sulfur-containing sewage desulfurization device for the oil field comprises a desulfurization tower, wherein the lower end of the desulfurization tower is communicated with a biological fluidization pool, and a water leakage bucket is arranged at the joint of the desulfurization tower and the biological fluidization pool; the top of the desulfurizing tower is provided with a tail gas absorber, a condenser, a liquid distributor, a filler and an active carbon layer are sequentially arranged in the desulfurizing tower from top to bottom, a water distribution pipe is arranged between the condenser and the liquid distributor, and an air supply pipe is arranged on the lower side of the active carbon layer; the biological fluidization tank is internally provided with a microorganism carrier, and the bottom of the biological fluidization tank is provided with a plurality of aeration heads.

In the above technical scheme, preferably, the top of the tail gas absorber is externally connected with a tail gas treatment device through a pipeline.

In the above technical scheme, preferably, the liquid distributor comprises a plurality of distribution grooves, the cross sections of the distribution grooves are isosceles trapezoids, the distribution grooves comprise groove bottoms and groove walls on two sides, a plurality of small holes are formed in the groove walls, and a filter screen is arranged at the groove bottoms.

In the above technical solution, preferably, the filler is a ceramic ring.

In the above technical scheme, preferably, the water distribution pipe is provided with a plurality of spray heads, and one end of the water distribution pipe penetrates out of the side wall of the sulfur removal tower and is connected with the water collecting tank through the lift pump.

In the above technical scheme, preferably, the air supply pipe is provided with a plurality of air outlet heads, and one end of the air supply pipe penetrates out of the desulfurizing tower to be externally connected with an ozone generator.

In the above technical scheme, preferably, the desulfurizing tower and the biological fluidized tank are integrally in an L-shaped structure.

In the above technical scheme, preferably, the bottom of the biological fluidization tank is provided with a water outlet.

In the above technical scheme, preferably, a zigzag channel is arranged in the condenser.

Compared with the prior art, the sulfur-containing sewage desulfurization device for the oil field has the following beneficial effects:

by combining desulfurization with a biological membrane system, most of sulfur is removed in a desulfurization tower and then enters a biological fluidized bed, and part of non-removed sulfide can be removed while part of COD is removed, so that the concentration of the whole sewage is reduced, and the subsequent advanced treatment of the sewage is facilitated; the method of combining ozone and active carbon is suitable for sulfur-containing sewage with various concentrations, and compared with pure air oxidation, ozone enters carbon pores to act with absorbed and enriched sulfur ions, and the ozone utilization rate is improved under the catalysis of the active carbon; ozone has stronger regeneration capability to active carbon, and can prolong the service life of the active carbon.

Drawings

FIG. 1 is a schematic view showing the overall structure of a desulfurization apparatus of the present utility model;

FIG. 2 is a schematic view of the structure of portion A of FIG. 1;

in the figure: 1-desulfurizing tower, 2-biological fluidization pool, 21-microorganism carrier, 22-aeration head, 3-condenser, 4-water distribution pipe, 41-spray header, 5-liquid distributor, 51-distribution tank, 510-tank bottom, 511-tank wall, 6-filler, 7-active carbon layer, 8-ozone generator, 9-air supply pipe, 91-air outlet head, 10-water leakage bucket, 11-tail gas absorber and 12-tail gas treatment device.

Detailed Description

It should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," second, "and third" are used merely to distinguish one entity or action from another entity or action, and do not necessarily require or imply any such actual relationship or order between such entities or actions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

referring to fig. 1 and 2, the sulfur-containing sewage desulfurization device for oil fields provided by the embodiment of the utility model comprises a desulfurization tower 1, wherein the lower end of the desulfurization tower 1 is communicated with a biological fluidization pool 2, a water leakage bucket 10 is arranged at the joint of the desulfurization tower 1 and the biological fluidization pool 2, and sewage after desulfurization in the desulfurization tower 1 enters the biological fluidization pool 2 from water leakage 10.

In order to better implement the utility model, referring to fig. 1, in one embodiment, the top of the desulfurizing tower 1 is provided with a tail gas absorber 11, the top of the tail gas absorber 11 is externally connected with a tail gas treatment device 12 through a pipeline, the tail gas absorber 11 is an air exhaust fan, and the hydrogen sulfide gas generated by the separation of sewage is absorbed by the tail gas absorber 11 and sent to the tail gas treatment device 12 for treatment, so that the gas is prevented from escaping and polluting the environment. The tail gas treatment device 12 in the embodiment is a gas hydrogen sulfide absorption column, a solid phase desulfurizing agent is selected for filling, a condenser 3, a liquid distributor 5, a filler 6 and an active carbon layer 7 are sequentially arranged in the desulfurizing tower 1 from top to bottom, a water distribution pipe 4 is arranged between the condenser 3 and the liquid distributor 5, an air supply pipe 9 is arranged on the lower side of the active carbon layer 7, and a zigzag channel is arranged in the condenser 3.

For better implementation of the utility model, with reference to fig. 1, in one embodiment, a microorganism carrier 21 is provided in the biological fluidized tank 2, and a plurality of aeration heads 22 are provided at the bottom of the biological fluidized tank 2. The particle size of the microorganism carrier 21 is 0.3-1.0 mm. When the concentration of organic matters in the sewage at the bottom of the tank is higher, the biological film on the microbial carrier 21 is thicker and is easy to float upwards, when the biological particles at the upper part are reduced due to the reduction of nutrients, the falling of the film makes the biological particles become heavy and have the tendency of sinking, and good mixed contact conditions can be maintained in the tank all the time by sinking and floating, so that the treatment effect is ensured.

In order to better implement the utility model, referring to fig. 1 and 2, in one embodiment, the liquid distributor 5 includes a plurality of distribution grooves 51, the cross section of the distribution grooves 51 is isosceles trapezoid, the distribution grooves 51 include a groove bottom 510 and groove walls 511 on two sides, a plurality of small holes are formed on the groove walls 511, and the groove bottom 510 is provided with a filter screen. The inclination angle of the groove wall 511 is between 30 degrees and 60 degrees, so that the liquid flowing through the distribution groove 51 can fall into the tower to cover a larger area when flowing out through the small holes. In order to make the distribution of the liquid falling into the column through the small holes more uniform, the present embodiment staggers the small holes on the two side walls 511. The tank bottom 510 is of a filter screen structure, so that partial small particulate matters in the sewage can be conveniently intercepted, and the particulate matters can be prevented from entering gaps between the filler 6 below and the activated carbon layer 7 to cause blockage.

For better practice of the utility model, referring to fig. 1, in one embodiment, the packing 6 is a ceramic ring. The ceramic ring can increase the gas-liquid contact area. The sewage and the ozone are fully contacted with the activated carbon layer 7 in the filler 6, the ozone directly extracts sulfur in the sewage in the filler 6, and a small amount of ozone reacts with the sewage in the filler 6 because the ozone reacts in the activated carbon layer 7, so that the ozone utilization rate is maximized. In the activated carbon layer 7, ozone enters the pores of the carbon and acts with the absorbed and enriched sulfur ions, the reaction activation energy is reduced under the catalysis of the activated carbon, the utilization rate of the ozone is improved, the ozone and the activated carbon are combined, and the process of treating sulfur-containing sewage is not only the oxidation process of the sulfur ions in the sewage, but also the regeneration process of the activated carbon.

In order to better implement the utility model, referring to fig. 1, in one embodiment, the water distribution pipe 4 is provided with a plurality of spray heads 41, and one end of the water distribution pipe 4 penetrates out of the side wall of the desulfurizing tower 1 and is connected with the water collecting tank through a lift pump. The spraying adopts an atomizing spraying water inlet mode, so that the ozone utilization efficiency is effectively improved.

In order to implement the utility model better, referring to fig. 1, in one embodiment, the air supply pipe 9 is provided with a plurality of air outlet heads 91, and one end of the air supply pipe 9 passes out of the desulfurizing tower 1 and is externally connected with an ozone generator 8.

In order to better practice the utility model, referring to fig. 1, in one embodiment, the desulfurizing tower 1 and the biological fluidized tank 2 are integrally formed in an L-shaped structure.

For better practice of the utility model, referring to fig. 1, in one embodiment, the bottom of the biological fluidized tank 2 is provided with a water outlet.

Based on above-mentioned oil field is with containing sulphur sewage desulfurization device, its theory of operation is:

sewage is sprayed into the desulfurizing tower 1 through the spray header 41 from the water distribution pipe 4 by the lift pump, is uniformly sprayed on the filler 6 through the liquid distributor 5, is generated by the filler 6 and the activated carbon layer 7 and the ozone generator 8 below, is fed through the air supply pipe 9, is contacted with ozone sprayed from the air outlet head 91, oxidizes sulfide ions in the sewage, the generated gas is absorbed by the tail gas absorber 11 and is sent into the tail gas treatment device 12 for treatment, the rest of the sewage continuously flows through the water leakage hopper 10 to enter the biological fluidized tank 2, the aeration head 22 at the bottom of the biological fluidized bed 2 aerates the sewage in the biological fluidized tank 2, the microbial carrier 21 provides a huge specific surface area for microbial attachment growth, so that the reactor can maintain a higher microbial concentration, the volume load of the whole reactor is improved, sulfide and part of other pollutants are basically removed from the sewage treated by the biological fluidized tank 2, and the subsequent sewage is convenient for further treatment.

In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims

1. The sulfur-containing sewage desulfurization device for the oil field comprises a desulfurization tower (1), and is characterized in that the lower end of the desulfurization tower (1) is communicated with a biological fluidization pool (2), and a water leakage bucket (10) is arranged at the joint of the desulfurization tower and the biological fluidization pool;

the top of the desulfurizing tower (1) is provided with a tail gas absorber (11), a condenser (3), a liquid distributor (5), a filler (6) and an active carbon layer (7) are sequentially arranged in the desulfurizing tower (1) from top to bottom, a water distribution pipe (4) is arranged between the condenser (3) and the liquid distributor (5), and an air supply pipe (9) is arranged on the lower side of the active carbon layer (7);

the biological fluidization tank (2) is internally provided with a microorganism carrier (21), and the bottom of the biological fluidization tank (2) is provided with a plurality of aeration heads (22).

2. The sulfur-containing sewage desulfurization device for oil fields according to claim 1, wherein the top of the tail gas absorber (11) is externally connected with a tail gas treatment device (12) through a pipeline.

3. The sulfur-containing sewage desulfurization device for oil fields according to claim 1, wherein the liquid distributor (5) comprises a plurality of distribution grooves (51), the cross section of each distribution groove (51) is isosceles trapezoid, each distribution groove (51) comprises a groove bottom (510) and groove walls (511) on two sides, a plurality of small holes are formed in each groove wall (511), and a filter screen is arranged on each groove bottom (510).

4. The sulfur-containing sewage desulfurization device for oil field according to claim 1, wherein the filler (6) is a ceramic ring.

5. The sulfur-containing sewage desulfurization device for the oil field according to claim 1, wherein the water distribution pipe (4) is provided with a plurality of spray heads (41), and one end of the water distribution pipe (4) penetrates out of the side wall of the desulfurization tower (1) and is connected with the water collecting tank through a lifting pump.

6. The sulfur-containing sewage desulfurization device for the oil field according to claim 1, wherein the air supply pipe (9) is provided with a plurality of air outlet heads (91), and one end of the air supply pipe (9) penetrates out of the desulfurizing tower (1) to be externally connected with an ozone generator (8).

7. The sulfur-containing sewage desulfurization device for oil fields according to claim 1, wherein the desulfurizing tower (1) and the biological fluidized tank (2) are integrally formed in an L-shaped structure.

8. The sulfur-containing sewage desulfurization device for oil fields according to claim 1, wherein a water outlet is arranged at the bottom of the biological fluidization tank (2).

9. The sulfur-containing sewage desulfurization device for oil fields according to claim 1, wherein the condenser (3) is internally provided with a zigzag-shaped passage.