CN218410777U

CN218410777U - Recovered benzene cooler

Info

Publication number: CN218410777U
Application number: CN202222358608.4U
Authority: CN
Inventors: 胡胜文; 樊啟彪; 邱建华
Original assignee: Hubei Gehua Huaxiang Chemical Co ltd
Current assignee: Hubei Gehua Huaxiang Chemical Co ltd
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-01-31
Anticipated expiration: 2032-09-05

Abstract

The utility model discloses a retrieve benzene cooler belongs to benzene and retrieves technical field, include: transmission pipeline, cooling device, liquid storage box and gas storage device. The transmission pipeline consists of a plurality of branch pipes which are arranged in parallel, each branch pipe is provided with an air inlet end and an air outlet end, the air inlet end and the air outlet end both extend downwards to form liquid outlet ends which are communicated with the air inlet end and the air outlet end and used for discharging condensate, so that benzene steam sequentially enters the branch pipes through the air inlets and is discharged through the air outlets; the cooling device is used for cooling the benzene steam in the transmission pipeline; the liquid storage box is arranged below the transmission pipeline; the gas storage device is provided with a gas storage cavity which is arranged above the gas outlet and communicated with the gas outlet for storing non-condensable gas; the utility model discloses a transmission pipeline realizes the cooling to the benzene steam sectional type, and the cooling effect is good, and work efficiency is high, can also improve the rate of recovery of benzene steam, can avoid the noncondensable gas direct discharge to cause the influence to the surrounding environment.

Description

Recovered benzene cooler

Technical Field

The utility model belongs to the technical field of the benzene recovery technique and specifically relates to a retrieve benzene cooler is related to.

Background

The crude benzene is one of the products in the crude gas generated by coal pyrolysis, and the benzene series compound recovered from the coke oven gas after deamination is called as crude benzene, wherein the benzene content is the main content, and the main components of the crude benzene are benzene and homologues thereof such as toluene, xylene, trimethylbenzene and the like. At present, in the treatment process of benzene recovery, a condenser is generally adopted to treat benzene vapor, and the condensation temperature of the condenser is set to be 7 ℃ because the freezing point of benzene is 5.5 ℃. During the process of condenser treatment of benzene vapor, about 90% of the benzene gas becomes liquid, achieving most of the recovery.

Present recovery benzene cooling device generally includes retrieves the cauldron, the contact pipe, cooling device and recovery unit, and gaseous chlorobenzene after the distillation enters into the recovery cauldron through the contact pipe in, the rectification gas forms the liquid drop after meetting cooling device under cooling device's cooling to the drippage is on the guide plate, and the guide plate slope is arranged, and the liquid drop is because self gravity reason drippage to the recovery unit of both sides in, accomplish whole chlorobenzene recovery process.

Although benzene steam can realize liquefaction for retrieving after cooling through cooling device, but current benzene recovery often can not reach the desired effect during cooling, makes probably discharge uncondensed benzene steam when the gas emission, and the noncondensable gas direct emission during some coolings can cause the influence to the surrounding environment simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a retrieve benzene cooler, solve among the prior art benzene and retrieve the cooling and can not reach anticipated effect, noncondensable gas direct discharge causes the technical problem of influence to the surrounding environment.

In order to achieve the technical purpose, the technical scheme of the utility model provides a retrieve benzene cooler, include:

the conveying pipeline consists of a plurality of branch pipes which are arranged in parallel, each branch pipe is provided with an air inlet end and an air outlet end, the air inlet end and the air outlet end both extend downwards to form liquid outlet ends which are communicated with the air inlet end and the air outlet end and used for discharging condensate, the air inlet ends of the two adjacent branch pipes are communicated with the air outlet end, the air inlet end of one branch pipe forms an air inlet, and the air outlet end of the other branch pipe forms an air outlet so that benzene steam can sequentially enter the branch pipes through the air inlet and is discharged through the air outlet;

the cooling end of the cooling device is attached to the transmission pipeline so as to cool the benzene steam in the transmission pipeline;

the liquid storage box is arranged below the transmission pipeline, a plurality of liquid inlet pipes which are in one-to-one correspondence with the liquid outlet ends are arranged on the liquid storage box, and a liquid outlet pipe is arranged at the lower side of the liquid storage box;

the gas storage device is provided with a gas storage cavity which is arranged above the gas outlet and communicated with the gas outlet for storing the non-condensable gas.

In some embodiments, the cooling device comprises a plurality of heat dissipation fins which are arranged in parallel on the outer side of the conveying pipeline along the height direction of the conveying pipeline.

In some embodiments, the cooling device further comprises a cooling box, the cooling box covers the outside of the transmission pipeline, and ventilation openings are formed in two opposite sides of the cooling box.

In some embodiments, the gas storage device includes a gas storage tank and an exhaust pipe, wherein a lower side of the gas storage tank is communicated with the gas outlet, the exhaust pipe is communicated with the gas storage tank, and the exhaust pipe is provided with a first valve.

In some embodiments, the gas storage device further comprises an exhaust fan, and the exhaust fan is installed on the exhaust pipe.

In some embodiments, the plurality of conveying pipelines are arranged in parallel, and the air outlets of the plurality of conveying pipelines are communicated with the air storage cavity.

In some embodiments, the recycled benzene cooler further comprises a transverse pipe and an air inlet main, the transverse pipe is transversely arranged at the plurality of air inlets and is communicated with the plurality of air inlets, and the air inlet main is communicated with the transverse pipe.

In some embodiments, the branch tubes are "U" tubes or "V" tubes.

In some embodiments, the plurality of branch pipes communicate with each other through inverted arc-shaped pipes.

In some embodiments, the cross-sectional area of the liquid storage tank decreases from the end of the liquid storage tank near the transport pipe to the end of the liquid storage tank near the liquid outlet pipe, and the end of the liquid storage tank near the liquid outlet pipe is pointed and communicated with the liquid outlet pipe.

Compared with the prior art, the beneficial effects of the utility model include: benzene steam is transmitted through the transmission pipeline, the cooling device is used for cooling the benzene steam in the transmission pipeline, the benzene steam is transmitted through the branch pipes, part of the benzene steam is condensed in each branch pipe, condensed condensate water can be directly discharged into the liquid storage box through the liquid outlet ends of the branch pipes, the rest pump steam is sequentially cooled and condensed, and sectional cooling of the benzene steam is achieved through the transmission pipeline, so that the cooling effect is good, and the working efficiency is high;

through the gas storage device who sets up, the combustion gas can concentrate on in the gas storage chamber among the transmission pipeline, and simultaneously, it can be accomodate the benzene steam of untimely condensation, benzene steam can fully contact and condense with the exhaust cold gas in the gas storage chamber, last accessible gas outlet flows back to the branch pipe, flow to liquid via going out the liquid end and deposit the incasement and collect, the rate of recovery of benzene steam has been improved, send the noncondensable gas of emission into the gas storage device simultaneously and collect in unifying the emission, so that subsequent processing, avoid the noncondensable gas direct emission to cause the influence to the surrounding environment.

Drawings

FIG. 1 is a schematic view of an overall three-dimensional structure of an embodiment of the recovered benzene cooler of the present invention;

FIG. 2 is a schematic view of an overall front cross-sectional structure of an embodiment of the recovered benzene cooler of the present invention;

FIG. 3 is a schematic left side view of a cross-sectional structure of a horizontal tube of an embodiment of the benzene cooler of the present invention;

FIG. 4 is a schematic sectional view of an embodiment of the recovered benzene cooler of the present invention in an overall front view;

fig. 5 is a schematic view of an overall front sectional structure of an embodiment of the recovered benzene cooler of the present invention.

In the figure: 1. a transport pipeline; 11. a branch pipe; 12. an air inlet end; 13. an air outlet end; 14. a liquid outlet end; 15. an air inlet; 16. an air outlet; 2. a cooling device; 21. a heat dissipating fin; 22. a cooling tank; 23. a water inlet pipe; 24. a water outlet pipe; 25. an air cooler; 26. an air inlet pipe; 27. an air outlet pipe; 3. a liquid storage tank; 31. a liquid inlet pipe; 32. a liquid outlet pipe; 33. a second valve; 4. a gas storage device; 41. a gas storage tank; 42. an exhaust pipe; 43. a first valve; 44. an exhaust fan; 5. a transverse tube; 6. an intake manifold.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to fig. 2, the utility model provides a recovered benzene cooler, including: transmission pipeline 1, cooling device 2, liquid storage box 3 and gas storage device 4.

The transmission pipeline 1 is composed of a plurality of branch pipes 11 arranged in parallel, each branch pipe 11 is provided with an air inlet end 12 and an air outlet end 13, the air inlet end 12 and the air outlet end 13 extend downwards to form liquid outlet ends 14 which are communicated with the air inlet end 12 and the air outlet end 13 and used for discharging condensate, the air inlet ends 12 of two adjacent branch pipes 11 are communicated with the air outlet end 13, the air inlet end 12 of one branch pipe 11 forms an air inlet 15, and the air outlet end 13 of one branch pipe 11 forms an air outlet 16, so that benzene steam enters the branch pipes 11 in sequence through the air inlet 15 and is discharged through the air outlet 16.

The cooling end of the cooling device 2 is attached to the transmission pipeline 1 so as to cool the benzene steam in the transmission pipeline 1.

The liquid storage box 3 is arranged below the transmission pipeline 1, a plurality of liquid inlet pipes 31 which are communicated with the liquid outlet end 14 in a one-to-one correspondence mode are arranged on the liquid storage box 3, and a liquid outlet pipe 32 is arranged on the lower side of the liquid storage box 3.

The gas storage device 4 has a gas storage cavity disposed above the gas outlet 16 and communicated with the gas outlet 16 for storing non-condensable gas.

In the device, each branch pipe 11 is provided with an air inlet end 12 and an air outlet end 13, the air inlet end 12 and the air outlet end 13 of two adjacent branch pipes 11 are communicated, so that benzene steam can enter the branch pipe 11 through an air outlet 16 of one branch pipe 11 and sequentially passes through the plurality of branch pipes 11 through the air outlet end 13, a cooling device 2 with a cooling end attached to a transmission pipeline 1 can cool the benzene steam in the transmission pipeline 1, the benzene steam needs to be sequentially cooled and condensed into liquid through the plurality of branch pipes 11, the condensation effect on the benzene steam is good, and as the air inlet end 12 and the air outlet end 13 both extend downwards to form an liquid outlet end 14 which is communicated with the air inlet end 12 and the air outlet end and is used for discharging condensate, the condensate in each branch pipe 11 flows into the liquid outlet end 14 of the branch pipe 11 through the branch pipe 11 and is discharged into the liquid storage box 3 communicated with the liquid outlet end 14 through the liquid inlet pipe 31, and finally the condensate can be discharged through the liquid outlet pipe 32 to obtain the recovered condensate, the non-condensable gas in the benzene vapor can enter the gas storage cavity of the gas storage device 4 for collection through the transmission of the transmission pipeline 1, and the non-condensable benzene vapor collected in the gas storage cavity can be in contact with other cold gas in the gas storage cavity for cooling due to the fact that the gas storage cavity is arranged above the gas outlet 16, so that the condensed water condensed into liquid in the gas storage cavity can flow into the liquid storage box 3 through the gas outlet 16, the branch pipe 11 and the liquid inlet pipe 31, and effective cooling of the benzene vapor is achieved.

Furthermore, a second valve 33 is arranged on the liquid outlet pipe 32, and in the condensation process of the benzene vapor, the second valve 33 is in a closed state, so that the liquid can be concentrated into the liquid storage box 3, the non-condensable gas in the benzene vapor can enter the gas storage device 4 for collection through the transmission of the transmission pipeline 1, and the non-condensable gas or the non-condensed benzene vapor can be prevented from being discharged outside through the liquid outlet pipe 32; after benzene vapor treatment is complete, drain 32 may be opened to drain the collected condensate.

As shown in fig. 1 to fig. 2, in some embodiments, cooling device 2 includes a plurality of heat dissipation fins 21, and the plurality of heat dissipation fins 21 are arranged in parallel outside of transfer pipe 1 along the height direction of transfer pipe 1, and benzene vapor in the pipe can exchange heat with air outside the pipe through the pipe wall and heat dissipation fins 21, so as to cool the benzene vapor.

Further, the cooling device 2 further comprises a cooling box 22, the cooling box 22 is covered on the outer side of the transmission pipeline 1, ventilation openings are formed in two opposite sides of the cooling box 22, under the condition that ventilation conditions on the outer side of the transmission pipeline 1 are good, cooling can be performed in a heat exchange mode with air outside the pipe through the pipe wall and the radiating fins 21, and external air can enter the cooling box 22 through one ventilation opening, so that the air in the cooling box 22 can be discharged through the other ventilation openings along with a heat medium; a fan may be installed in the cooling box 22 to circulate the outside air and the air in the cooling box 22, and the air for heat exchange may be supplied by the fan.

Furthermore, in some embodiments, as shown in fig. 4, the cooling device 2 may include a cooling tank 22, a water inlet pipe 23 and a water outlet pipe 24, the cooling tank 22 is covered outside the transmission pipeline 1, the cooling tank 22 is closed, one end of the water inlet pipe 23 is communicated with the cooling liquid pipeline, the other end is communicated with one side of the cooling tank 22, the water outlet pipe 24 is communicated with the other side of the cooling tank 22, so that the cooling liquid continuously flows into the cooling tank 22 through the water inlet pipe 23 and is discharged through the water outlet pipe 24, the cooling liquid in the cooling tank 22 can be continuously circulated and loaded with the cooling liquid with a lower temperature, and the cooling liquid can contact with the transmission pipeline 1 to cool the benzene vapor.

Furthermore, in some embodiments, as shown in fig. 5, the cooling device 2 may further include a cooling box 22, an air cooler 25, an air inlet pipe 26, and an air outlet pipe 27, where the cooling box 22 is covered outside the transmission pipeline 1, the cooling box 22 is closed, the air outlet end 13 of the air cooler 25 is communicated with one side of the cooling box 22 through the air inlet pipe 26, and the air outlet pipe 27 is communicated with the other side of the cooling box 22, so that the cold air continuously enters the cooling box 22 through the air inlet pipe 26 and is discharged through the air outlet pipe 27, so that the cold air can be continuously and circularly filled in the cooling box 22, and the cold air can contact with the transmission pipeline 1 to cool the steam.

As shown in fig. 2, in some embodiments, the gas storage device 4 includes a gas storage tank 41 and an exhaust pipe 42, the gas storage tank 41 is embedded in the upper surface of the cooling box 22, the gas storage tank 41 is disposed above the gas outlet 16 and is communicated with the gas outlet 16, a gas storage cavity is formed in the gas storage tank 41, the exhaust pipe 42 is disposed above the gas storage tank 41 and is communicated with the gas storage tank 41, a first valve 43 is disposed on the exhaust pipe 42, during the condensation process of the benzene vapor, the first valve 43 is in a closed state, the uncondensed gas in the transmission pipeline 1 can be discharged into the gas storage tank through the gas outlet 16 for collection, the uncondensed benzene vapor collected in the gas storage tank can be cooled by contacting with other cold gases in the gas storage cavity, and can be condensed into liquid that flows into the liquid storage box 3 through the gas outlet 16, the branch pipe 11 and the liquid inlet pipe 31.

Further, in some embodiments, the gas storage device 4 further includes an exhaust fan 44, the exhaust fan 44 is installed on the exhaust pipe 42, when the gas in the gas storage tank 41 needs to be discharged, the exhaust fan 44 and the first valve 43 are opened, the exhaust fan 44 enables the gas storage tank 41 to generate negative pressure, so that the gas in the gas storage tank 41 can be discharged through the exhaust pipe 42, because the gas storage tank 41 is communicated with the transmission pipeline 1 and the liquid storage tank 3, the non-condensable gas remaining in the transmission pipeline 1 and the liquid storage tank 3 can be pumped into the gas storage tank 41 and discharged through the exhaust pipe 42, so as to uniformly treat the non-condensable gas remaining in the device, and avoid the influence of direct discharge on the surrounding environment.

Further, in some embodiments, the branch pipes 11 are "U" shaped pipes or "V" shaped pipes, so that the condensed water in the branch pipes 11 can all flow to the bottom of the branch pipes 11 in a concentrated manner, so that the benzene vapor can be discharged smoothly after being condensed.

Further, in some embodiments, in order to avoid the condensate water remaining at the joints among the plurality of branch pipes 11, the plurality of branch pipes 11 are communicated with each other through the inverted arc-shaped pipe, so that the condensate water in the arc-shaped pipe can be discharged to the branch pipes 11 downstream along the pipe wall of the arc-shaped pipe and flows into the liquid storage tank 3 through the branch pipes 11.

Further, in some embodiments, in order to facilitate concentrated discharge of condensed water in the liquid storage tank 3, one end of the liquid storage tank 3 close to the liquid outlet pipe 32 is in a pointed shape and is communicated with the liquid outlet pipe 32, the cross-sectional area of the liquid storage tank 3 is gradually reduced from one end of the liquid storage tank close to the transmission pipeline 1 to one end of the liquid storage tank close to the liquid outlet pipe 32, and the liquid storage tank 3 is in an inverted cylindrical or pyramid structure, so that liquid in the liquid storage tank 3 can be completely discharged through the liquid outlet pipe 32, and a condensate residual phenomenon generated in the liquid storage tank 3 is avoided.

As shown in fig. 1 and 3, in some embodiments, in order to improve the cooling efficiency of benzene vapor, a plurality of transmission pipelines 1 are provided, the plurality of transmission pipelines 1 are arranged in parallel, and the air outlets 16 of the plurality of transmission pipelines 1 are communicated with the air storage cavity, so that the benzene vapor can be transmitted and cooled synchronously through the plurality of transmission pipelines 1.

Further, in some embodiments, the recycled benzene cooler further comprises a transverse pipe 5 and an air inlet manifold 6, the transverse pipe 5 is transversely arranged at the air inlets 15 and is communicated with the air inlets 15, one end of the air inlet manifold 6 is arranged outside the cooling box 22, so that the external benzene steam conveying pipe is communicated, the other end of the air inlet manifold 6 is communicated with the transverse pipe 5, the benzene steam can be conveyed into the transverse pipe 5, the benzene steam can sequentially flow into the conveying pipes 1 through the transverse pipe 5, and the split cooling of the benzene steam is realized.

The working principle is as follows: the benzene steam transmission pipe is communicated with the air inlet main pipe 6, so that the benzene steam is uniformly distributed to the transmission pipelines 1 through the air inlet main pipe 6 and the transverse pipe 5, at the moment, the second valve 33 on the liquid outlet pipe 32 is closed, the liquid storage box 3 is in a closed state, the benzene steam is sequentially conveyed through the branch pipes 11, heat exchange can be carried out with air outside the pipes through the pipe walls and the radiating fins 21, the benzene steam is cooled, the condensed benzene steam can flow into the liquid storage box 3 through the liquid outlet end 14 in the branch pipes 11 to be collected, non-condensable gas is collected and discharged in the gas storage box 41 through the gas outlet 16, the non-condensed benzene steam stored in the gas storage box 41 can be fully contacted and condensed with discharged cold gas, and finally the condensed benzene steam can flow back to the branch pipes 11 through the gas outlet end 16 and flow into the liquid storage box 3 through the liquid outlet end 14 to be collected, and in the use process, in order to ensure normal circulation of the gas, the exhaust fan 44 can be used for quantitatively exhausting the gas in the gas storage box 41.

The utility model discloses a transmission pipeline 1, cooling device 2 and the case 3 is deposited to liquid that set up, benzene steam is transmitted via transmission pipeline 1, cooling device 2 is provided for cooling the benzene steam in transmission pipeline 1, benzene steam transmission can be through a plurality of branch pipes 11, all can some benzene steam be condensed in each branch pipe 11, the comdenstion water after the condensation can directly discharge to the case 3 is deposited to liquid via the play liquid end 14 of branch pipe 11, remaining pump steam cools off the condensation in proper order, realize the cooling to benzene steam through transmission pipeline 1, the cooling effect is good, the sectional type work efficiency is high;

the utility model discloses a gas storage device 4 that sets up, the combustion gas physical stamina enough concentrates on in the gas storage chamber among the transmission pipeline 1, and simultaneously, it can be accomodate the benzene steam of condensation in time, benzene steam can be with exhaust cold gas fully contact and condensation in the gas storage chamber, 16 flows back to branch pipe 11 in last accessible gas outlet, collect in case 3 via going out liquid end 14 flows to liquid and deposits the case, the rate of recovery of benzene steam has been improved, send the noncondensable gas of emission into gas storage device 4 simultaneously and collect and unify the emission, so that subsequent processing, avoid the noncondensable gas direct emission to cause the influence to the surrounding environment.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A recycled benzene cooler, comprising:

the transmission pipeline consists of a plurality of branch pipes which are arranged in parallel, each branch pipe is provided with an air inlet end and an air outlet end, the air inlet end and the air outlet end both extend downwards to form liquid outlet ends which are communicated with the air inlet end and the air outlet end and used for discharging condensate, the air inlet ends of two adjacent branch pipes are communicated with the air outlet end, the air inlet end of one branch pipe forms an air inlet, and the air outlet end of the other branch pipe forms an air outlet so that benzene steam can sequentially enter the plurality of branch pipes through the air inlet and can be discharged through the air outlet;

the liquid storage box is arranged below the transmission pipeline, a plurality of liquid inlet pipes which are communicated with the liquid outlet end in a one-to-one correspondence mode are arranged on the liquid storage box, and the liquid outlet pipe is arranged on the lower side of the liquid storage box;

2. The recycled benzene cooler of claim 1, wherein the cooling means comprises a plurality of fins arranged in parallel outside the transport pipe in a height direction of the transport pipe.

3. The recycled benzene cooler of claim 1, wherein the cooling device further comprises a cooling tank, the cooling tank is covered outside the transmission pipeline, and ventilation openings are formed in two opposite sides of the cooling tank.

4. The cooler for recycling benzene as claimed in claim 1, wherein the gas storage device comprises a gas storage tank and an exhaust pipe, the lower side of the gas storage tank is communicated with the gas outlet, the exhaust pipe is communicated with the gas storage tank, and the exhaust pipe is provided with a first valve.

5. The recycled benzene cooler of claim 4, wherein the gas storage device further comprises a suction fan, and the suction fan is installed on the exhaust pipe.

6. The recycled benzene cooler of claim 1, wherein the plurality of transport pipes are arranged in parallel, and the air outlets of the plurality of transport pipes are communicated with the air storage chamber.

7. The recycled benzene cooler of claim 6, further comprising a cross pipe and an intake manifold, wherein the cross pipe is transversely disposed at the plurality of intake ports and is in communication with the plurality of intake ports, and the intake manifold is in communication with the cross pipe.

8. The recycled benzene cooler of claim 1, wherein the branch pipes are "U" pipes or "V" pipes.

9. The recycled benzene cooler of claim 1, wherein a plurality of said branch pipes communicate with each other through inverted arc-shaped pipes.

10. The recycled benzene cooler as set forth in claim 1, wherein the liquid storage tank has a cross-sectional area that gradually decreases from an end thereof adjacent to the transport pipe to an end thereof adjacent to the outlet pipe, the end of the liquid storage tank adjacent to the outlet pipe being pointed and communicating with the outlet pipe.