CN212425972U - Novel coke oven gas output pipeline - Google Patents

Abstract

A novel coke oven gas output pipeline comprises a tank body, an air inlet valve, a first filter screen, a second filter screen, a flow guide groove, a first flow guide plate, a second flow guide plate, a flow guide pipe and a cooling coil, wherein the arrangement of the flow guide groove and the flow guide pipe realizes further cleaning and removal of high-temperature tar such as naphthalene, phenanthrene and the like in coke oven gas, the flow guide groove and the cooling coil are combined with a coke oven gas input pipeline, the complete cleaning of the residual high-temperature tar such as naphthalene, phenanthrene and the like in the coke oven gas can be realized, lifting and dismounting equipment such as a crown block, a vice and the like is not needed, the labor intensity of staff is greatly reduced, the production line is not needed to be shut down, the normal production of natural gas produced by the coke oven gas is ensured, only; meanwhile, in the process of cleaning high-temperature tar such as naphthalene, phenanthrene and the like, the tank body is not detached, the tightness is continuous and stable, the risk of gas explosion and leakage of the tank body is effectively reduced, and the continuous and stable quality of coke oven gas at the inlet of a subsequent pretreatment procedure is ensured.

Description

Novel coke oven gas output pipeline

Technical Field

The utility model relates to a coke oven gas carries and is equipped with technical field, especially relates to a novel coke oven gas delivery line.

Background

The coke oven gas discharged from the coking furnace contains more tar which is divided into medium-low temperature tar and high temperature tar, wherein the low temperature tar contains more oxygen-containing compounds and chain-like hydrocarbons, the high temperature tar contains naphthalene, phenanthrene, pyrene and the like, the naphthalene melting point is 80.5 ℃, the phenanthrene melting point is 97-101 ℃, in the process of conveying the coke oven gas to a pretreatment procedure, as the temperature of a conveying pipeline is gradually reduced, naphthalene is easy to separate out and adhere to the conveying pipeline for conveying the coke oven gas, after long-term accumulation, the conveying pipeline is frequently and locally blocked, and the gas explosion risk and the leakage risk exist, therefore, the conveying pipeline is opened after a certain time is needed to clean a large amount of naphthalene and other impurities remained in the conveying pipeline, the cleaning process consumes a long time, generally 12-24 hours, the production line is frequently stopped when the production line is short, and the normal production of natural gas.

The temperature of the coke oven gas in the conveying pipeline is gradually reduced, but the temperature of the coke oven gas is difficult to be reduced to 40-70 ℃ because the coke oven gas contains more waste heat, high-temperature tar such as naphthalene, phenanthrene and the like in the coke oven gas cannot be completely separated out, so that a small amount of high-temperature tar such as naphthalene, phenanthrene and the like still remains in the coke oven gas after the coke oven gas is input into the pipeline for treatment, and the quality of the coke oven gas at an inlet of a subsequent pretreatment procedure is influenced.

Disclosure of Invention

In view of the above, it is necessary to provide a novel coke oven gas output pipeline.

A novel coke oven gas output pipeline comprises a tank body, an air inlet valve, a first filter screen, a second filter screen, a flow guide groove, a first flow guide plate, a second flow guide plate, a flow guide pipe and a cooling coil pipe, wherein an air inlet is arranged at one side of the tank body, an air outlet is arranged at the other side of the tank body, the air inlet valve is arranged at the top of the tank body, one end of the first filter screen is arranged in the tank body, the other end of the first filter screen extends to one side close to the air inlet of the tank body, one end of the second filter screen is arranged in the tank body, the other end of the second filter screen extends to one side close to the air outlet of the tank body, the second filter screen and the first filter screen are oppositely arranged in the tank body and form a flow guide gap, one end of the flow, first guide plate one end sets up in guiding gutter one side, the first guide plate other end sets up on the internal wall of jar that is close to air inlet one side, second guide plate one end sets up in the guiding gutter opposite side, the second guide plate other end sets up on the internal wall of jar that is close to air outlet one side, honeycomb duct one end is passed jar internal bottom inner wall and is connected with the guiding gutter, the cooling coil sets up in jar internal portion along length direction, the cooling coil entry end sets up on the jar body that is close to air inlet one side, the cooling coil exit end sets up on the jar body that is close to air outlet one side.

Preferably, the pipeline of the tank body air inlet is further provided with a first regulating valve, and the pipeline of the tank body air outlet is further provided with a second regulating valve.

Preferably, a drain valve is further arranged on the pipeline at the other end of the draft tube.

Preferably, the bottoms of the first guide plate and the second guide plate are also provided with a plurality of reinforcing ribs.

Preferably, the first filter mesh size is larger than the second filter mesh size.

Preferably, the first filter screen and the second filter screen are conical filter screens.

According to the scheme, the first filter screen and the second filter screen are oppositely arranged in the tank body so as to adsorb high-temperature tar such as naphthalene, phenanthrene and the like which are remained in the coke oven gas; this scheme is provided with the admission valve at jar body top, in order to let in a large amount of hot steam to jar internal portion, make naphthalene, high temperature tar such as phenanthrene melts into liquid, this scheme is at first filter screen, second filter screen lower extreme still is provided with the guiding gutter respectively, first guiding plate, the second guiding plate, so that liquid naphthalene, high temperature tar such as phenanthrene drips on first guiding plate and second guiding plate and assembles in the guiding gutter gradually, this scheme still is provided with the honeycomb duct bottom the guiding gutter, open the blowoff valve, in order in time to discharge the high temperature tar such as jar body to outside separator and blowdown jar. Through the arrangement, high-temperature tar such as naphthalene, phenanthrene and the like in the tank body is efficiently cleaned, hoisting and disassembling equipment such as a crown block and a vice is not needed, the labor intensity of staff is greatly reduced, the production line is not needed to be shut down, normal production of natural gas produced by coke oven gas is ensured, only 1 staff is needed to operate, cleaning can be completed within 30-120 minutes, and the tank body cleaning efficiency is remarkably improved; meanwhile, in the process of cleaning high-temperature tar such as naphthalene, phenanthrene and the like, the tank body is not detached, the tightness is continuous and stable, and the risk of gas explosion and leakage of the tank body is effectively reduced. The scheme also realizes the further cleaning and removal of high-temperature tar such as residual naphthalene, phenanthrene and the like in the coke oven gas in the tank body, and ensures the continuous and stable quality of the coke oven gas at the inlet of the subsequent pretreatment procedure.

Drawings

FIG. 1 is a schematic sectional view of a novel coke oven gas output pipeline.

Fig. 2 is a partially enlarged schematic view of fig. 1.

In the figure: the device comprises a tank body 10, a first adjusting valve 11, a second adjusting valve 12, a first filter screen 20, a second filter screen 30, a flow guide groove 40, a first flow guide plate 50, a reinforcing rib 51, a second flow guide plate 60, a flow guide pipe 70, a drain valve 71, an air inlet valve 80 and a cooling coil 90.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1 to 2, the present invention provides a novel coke oven gas output pipeline, which comprises a tank body 10, an air inlet valve 80, a first filter screen 20, a second filter screen 30, a diversion trench 40, a first diversion plate 50, a second diversion plate 60, a diversion pipe 70 and a cooling coil 90, wherein the tank body 10 is a rigid explosion-proof tank for conveying coke oven gas, one side of the tank body 10 is provided with an air inlet for connecting with an air outlet of a coke oven gas input pipeline to convey the coke oven gas from which most of high temperature tar such as naphthalene and phenanthrene is removed into the tank body 10, the other side of the tank body 10 is provided with an air outlet for connecting with a small-bore pipeline of a next process such as a pretreatment process to convey the cleaned coke oven gas in the tank body 10 to the next pretreatment process, the air inlet valve 80 is arranged at the top of the tank body 10 to introduce hot steam of not less than 100 ℃ into the tank body 10 when the tank body 10 stops conveying the, one end of the first filter screen 20 is arranged inside the tank body 10, the other end of the first filter screen 20 extends to one side close to the air inlet of the tank body 10 to filter high-temperature tar such as naphthalene, phenanthrene and the like remaining in the coke oven gas, one end of the second filter screen 30 is arranged inside the tank body 10, the other end of the second filter screen 30 extends to one side close to the air outlet of the tank body 10 to further filter high-temperature tar such as naphthalene, phenanthrene and the like remaining in the coke oven gas, the second filter screen 30 and the first filter screen 20 are oppositely arranged inside the tank body 10 and form a flow guide gap, so that the flow rates of the coke oven gas flowing through the first filter screen 20 and the coke oven gas flowing through the second filter screen 30 are different in the flow guide gap to form turbulence, the high-temperature tar such as naphthalene, phenanthrene and the like remaining in the coke oven gas is attached to the first filter screen 20 and the second filter screen 30 close to one side of the flow guide gap, one, the other end of the diversion trench 40 is arranged on the inner wall of the bottom of the tank body 10, the diversion trench 40 is groove-shaped, the bottom of the diversion trench is provided with a diversion through hole, one end of the first guide plate 50 is arranged on one side of the diversion trench 40, the other end of the first guide plate 50 is arranged on the inner wall of the tank body 10 close to one side of the air inlet, the first guide plate 50 is arranged in an inclined manner, one end of the second guide plate 60 is arranged on the other side of the diversion trench 40, the other end of the second guide plate 60 is arranged on the inner wall of the tank body 10 close to one side of the air outlet, the second guide plate 60 is arranged in an inclined manner, one end of the diversion pipe 70 penetrates through the inner wall of the bottom of the tank body 10 and is connected with the diversion trench 40, so that one end of the diversion pipe, when necessary, the cooling coil 90 passes through the net bodies of the first filter screen 20 and the second filter screen 30, the inlet end of the cooling coil 90 is arranged on the tank body 10 close to one side of the air inlet, and the outlet end of the cooling coil 90 is arranged on the tank body 10 close to one side of the air outlet.

Specifically, cold water is introduced into the cooling coil 90 to cool the coke oven gas inside the tank 10, so as to reduce the temperature of the coke oven gas in the tank body 10 to 40-70 ℃ and lower than the melting point thereof, preferably, the temperature of the coke oven gas is reduced to 55 ℃, so that trace amount of high temperature tar such as naphthalene, phenanthrene and the like remained in the coke oven gas is completely separated out and adsorbed on the meshes of the first filter screen 20 and the second filter screen 30, when the coke oven gas is not conveyed in the tank 10, hot steam is introduced into the tank 10 through the air inlet valve 80 to be melted into liquid, and then high-temperature tar such as naphthalene, phenanthrene and the like in the tank 10 is discharged to an external separator and a sewage tank through the flow guide groove 40, the first flow guide plate 50, the second flow guide plate 60 and the flow guide pipe 70 in time, further realizing the further cleaning and removal of high temperature tar such as residual naphthalene, phenanthrene and the like in the coke oven gas in the tank body 10, and ensuring the continuous and stable quality of the coke oven gas at the inlet of the subsequent pretreatment procedure.

In particular, the coke oven gas output pipeline and the coke oven gas input pipeline are used together, so that the effects of cleaning and removing high-temperature tar such as naphthalene, phenanthrene and the like in the coke oven gas are better.

According to the scheme, the first filter screen 20 and the second filter screen 30 are oppositely arranged in the tank body 10, when the tank body 10 is used for normally conveying the coke oven gas, the first filter screen 20 adsorbs most of the high-temperature tar such as naphthalene, phenanthrene and the like which are remained in the coke oven gas, and the second filter screen 30 further adsorbs a small part of the high-temperature tar such as naphthalene, phenanthrene and the like which are remained in the coke oven gas, so that the content of the high-temperature tar such as naphthalene, phenanthrene and the like in the coke oven gas is greatly reduced, and the high-temperature tar such as naphthalene, phenanthrene and; the scheme is that an air inlet valve 80 is arranged at the top of a tank body 10, the air inlet valve 80 is not synchronously opened with a first regulating valve 11 and a second regulating valve 12, when high-temperature tar such as naphthalene, phenanthrene and the like is cleaned in the tank body 10, the air inlet valve 80 is opened, a large amount of hot steam is introduced into the tank body 10, and the high-temperature tar such as naphthalene, phenanthrene and the like adsorbed on a first filter screen 20 and a second filter screen 30 is rapidly heated through the hot steam to be melted into liquid, a flow guide groove 40, a first flow guide plate 50 and a second flow guide plate 60 are respectively arranged at the lower ends of the first filter screen 20 and the second filter screen 30, so that the high-temperature tar such as liquid naphthalene, phenanthrene and the like falls on the first flow guide plate 50 and the second flow guide plate 60 and gradually converges in the flow guide groove 40, a flow guide pipe 70 is further arranged at the bottom of the flow guide groove 40, a blow-down valve 71 is opened to timely discharge, after the pollution discharge is finished, nitrogen is introduced into the tank body 10 through the air inlet valve 80 for purging, so that the water content in the tank body 10 is reduced. Through the arrangement, high-temperature tar such as naphthalene, phenanthrene and the like in the tank body 10 is efficiently cleaned, hoisting and disassembling equipment such as a crown block and a vice is not needed, the labor intensity of staff is greatly reduced, the production line is not needed to be shut down, normal production of natural gas produced by coke oven gas is ensured, only 1 staff is needed to operate, cleaning can be completed within 30-120 minutes, and the cleaning efficiency of the tank body 10 is remarkably improved; meanwhile, in the process of cleaning high-temperature tar such as naphthalene, phenanthrene and the like, the tank body 10 is not detached, the airtightness is continuous and stable, and the risk of gas explosion and leakage of the tank body 10 is effectively reduced.

Further, a first regulating valve 11 is further arranged on the pipeline of the air inlet of the tank 10 to regulate the flow of the coke oven gas delivered from the air inlet of the tank 10, and a second regulating valve 12 is further arranged on the pipeline of the air outlet of the tank 10 to regulate the flow of the coke oven gas delivered from the air outlet of the tank 10.

Furthermore, a drain valve 71 is disposed on the pipeline at the other end of the draft tube 70 to close or open the draft tube 70, when the draft tube 70 is closed, the coke oven gas is normally conveyed by the tank 10, and when the draft tube 70 is opened, the high temperature tar such as naphthalene, phenanthrene, etc. guided out of the tank 10 is discharged to the outside of the tank 10 through the draft tube 70.

Further, a plurality of reinforcing ribs 51 are further arranged at the bottoms of the first guide plate 50 and the second guide plate 60, and the reinforcing ribs 51 are made of stainless steel to support the weight of the first guide plate 50 and the second guide plate 60 and prevent the first guide plate 50 and the second guide plate 60 from deforming after long-time use.

Further, the first filter 20 has a larger mesh size than the second filter 30.

Specifically, the first filter screen 20 is close to the air inlet of the tank 10 and is firstly contacted with the coke oven gas to filter the residual high temperature tar such as naphthalene, phenanthrene and the like in the coke oven gas, the mesh size of the first filter screen 20 is large to reduce the flow rate of the coke oven gas in the tank 10, so that the coke oven gas is fully contacted with the first filter screen 20, and the first filter screen 20 is promoted to adsorb more high temperature tar such as naphthalene, phenanthrene and the like; the second filter screen 30 is close to the air outlet of the tank body 10 and then contacts with the coke oven gas to further filter residual high temperature tar such as naphthalene, phenanthrene and the like in the coke oven gas, the mesh size of the second filter screen 30 is small to increase the flow rate of the coke oven gas in the tank body 10, so that the coke oven gas can rapidly pass through the second filter screen 30 while being fully contacted with the second filter screen 30, and potential dangers such as gas explosion and the like of the coke oven gas in the tank body 10 are prevented. The flow velocity of one side of the first filter screen 20 close to the flow guide gap is smaller than that of the other side of the second filter screen 30 close to the flow guide gap, so that the coke oven gas forms turbulence in the flow guide gap, and high temperature tar such as naphthalene, phenanthrene and the like remaining in the coke oven gas is further adsorbed on meshes of the first filter screen 20 and the second filter screen 30 close to two sides of the flow guide gap.

Further, the first filter screen 20 and the second filter screen 30 are conical corrosion-resistant filter screens, the interiors of the first filter screen and the second filter screen are hollow, and meshes are arranged around the exteriors of the first filter screen and the second filter screen to comprehensively adsorb high-temperature tar such as naphthalene, phenanthrene and the like remaining in the coke oven gas in the tank body 10.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (6)

1. A novel coke oven gas output pipeline is characterized in that: comprises a tank body, an air inlet valve, a first filter screen, a second filter screen, a flow guide groove, a first flow guide plate, a second flow guide plate, a flow guide pipe and a cooling coil pipe, wherein an air inlet is arranged at one side of the tank body, an air outlet is arranged at the other side of the tank body, the air inlet valve is arranged at the top of the tank body, one end of the first filter screen is arranged in the tank body, the other end of the first filter screen extends to one side close to the air inlet of the tank body, one end of the second filter screen is arranged in the tank body, the other end of the second filter screen extends to one side close to the air outlet of the tank body, the second filter screen and the first filter screen are oppositely arranged in the tank body and form a flow guide gap, one end of the flow guide groove is arranged at the bottom of the, the utility model discloses a cooling device, including a tank body, a first guide plate, a second guide plate, a honeycomb duct, a cooling coil, a gas inlet, a gas outlet, a first guide plate other end, second guide plate one end sets up on the internal wall of jar that is close to air inlet one side, second guide plate one end sets up in the guiding gutter opposite side, the second guide plate other end sets up on the internal wall of jar that is close to gas outlet one side, honeycomb duct one end is passed internal wall of jar bottom and is connected with the guiding gutter, the cooling coil sets up in internal portion of jar along length direction.

2. The novel coke oven gas outlet conduit of claim 1, wherein: still be provided with first governing valve on the pipeline of jar body air inlet, still be provided with the second governing valve on the pipeline formula of jar body gas outlet.

3. The novel coke oven gas outlet conduit of claim 1, wherein: and a drain valve is also arranged on the pipeline at the other end of the flow guide pipe.

4. The novel coke oven gas outlet conduit of claim 1, wherein: and a plurality of reinforcing ribs are arranged at the bottoms of the first guide plate and the second guide plate.

5. The novel coke oven gas outlet conduit of claim 1, wherein: the mesh size of the first filter is larger than the mesh size of the second filter.

6. The novel coke oven gas outlet conduit according to claim 1 or 5, wherein: the first filter screen and the second filter screen are conical filter screens.

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