CN219326723U - Tar recovery device - Google Patents

Abstract

The utility model discloses a tar recovery device which comprises a coke making furnace, a cooling device and a storage bin, wherein a first air outlet for discharging coke making tail gas is formed in the coke making furnace, the cooling device is provided with a first air inlet, the first air inlet is connected with the first air outlet, a first discharging hole for discharging condensed tar is formed in the bottom of the cooling device, the storage bin is arranged below the cooling device, a first feeding hole is formed in the top of the storage bin, and the first feeding hole is connected with the first discharging hole. The tar recovery device provided by the utility model has the advantage of high tar utilization rate.

Description

Tar recovery device

Technical Field

The utility model relates to the technical field of tar recovery, in particular to a tar recovery device.

Background

In the related art, the treatment of tar is usually to directly introduce the coke making tail gas with tar into a combustion furnace for combustion, and the heat energy generated by the method is unfavorable for storage and long-distance transportation, so that the utilization rate of the tar is reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the utility model provides a tar recovery device, which has the advantage of high utilization rate of tar.

The tar recovery device comprises a coke oven, a cooling device and a storage bin, wherein a first air outlet for discharging coke making tail gas is formed in the coke oven; the cooling device is provided with a first air inlet which is connected with the first air outlet; the cooling device is characterized in that a first discharging hole for discharging condensed tar is formed in the bottom of the cooling device, the storage bin is arranged below the cooling device, a first feeding hole is formed in the top of the storage bin, and the first feeding hole is connected with the first discharging hole.

According to the tar recovery device provided by the embodiment of the utility model, the coke making tail gas in the coke making furnace enters the cooling device through the first air outlet and the first air inlet. And then, the cooling device cools the coke making tail gas, and tar in the coke making tail gas is condensed in a low-temperature state and enters the storage bin through the first discharge port and the first feed port. Therefore, the tar is stored, the tar is convenient to sell as a product, and the utilization rate and the economic benefit of the tar are improved. The tar content in the cooled coke making tail gas is greatly reduced, and the cooled coke making tail gas can be directly used as fuel gas, so that the storage and the long-distance transmission of chemical energy/heat energy are realized.

In some embodiments, the cooling device comprises a first heat exchanger having a first hot fluid passage capable of exchanging heat and a first cold fluid passage for communicating with the first air outlet; the driving device is connected with the first heat exchanger so as to be convenient for introducing cooling fluid into the first cold fluid channel.

In some embodiments, the first heat exchanger comprises a shell and tube heat exchanger.

In some embodiments, the drive means comprises a fan or a water pump.

In some embodiments, the cooling device further comprises a second heat exchanger having a second hot fluid channel capable of exchanging heat and a second cold fluid channel, an inlet of the second hot fluid channel constituting the first air inlet, an outlet of the second hot fluid channel being connected to the first hot fluid channel, the second cold fluid channel being adapted to be fed with heat transfer oil.

In some embodiments, the second heat exchanger comprises one of a tube-in-tube, a double-tube, and a spray heat exchanger.

In some embodiments, the tar recovery device further comprises a heat storage bin having a first cavity and a second cavity therein capable of exchanging heat, the first cavity containing molten salt, the second cavity being connected to the second cold fluid channel and exchanging heat.

In some embodiments, the tar recovery device further comprises an electric catcher for catching condensed tar in the coking tail gas, an inlet of the electric catcher is connected with an outlet of the first hot fluid channel, the electric catcher is arranged above the storage bin, a second discharge hole is arranged at the bottom of the electric catcher, a second feed inlet is arranged at the top of the storage bin, and the second feed inlet is connected with the second discharge hole.

In some embodiments, a first and a second guide plate are disposed in the bin, the first guide plate is adjacent to the first feed inlet and is used for receiving the condensed tar of the first feed inlet, and the included angle between the first guide plate and the horizontal plane is smaller than 90 degrees and larger than 0 degrees; the second material guiding plate is adjacent to the second feeding hole and used for receiving the condensed tar of the second feeding hole, and an included angle between the second material guiding plate and the horizontal plane is smaller than 90 degrees and larger than 0 degrees.

In some embodiments, the tar recovery device further comprises a gas line, a first end of the gas line being connected to the outlet of the electrical trap, and a second end of the gas line being connected to the burner.

Drawings

Fig. 1 is a schematic view of a tar recovery device according to an embodiment of the present utility model.

Reference numerals: 1. a coke oven; 2. a cooling device; 21. a first heat exchanger; 22. a second heat exchanger; 3. a storage bin; 4. a heat storage bin; 5. an electrical catcher; 6. a gas transmission pipeline; 7. a combustion furnace.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A tar recovery device according to an embodiment of the present utility model is described below with reference to fig. 1.

As shown in fig. 1, the tar recovery device according to the embodiment of the utility model comprises a coke oven 1, a cooling device 2 and a storage bin 3, wherein a first air outlet for discharging coke making tail gas is arranged on the coke oven 1. The cooling device 2 is provided with a first air inlet which is connected to a first air outlet. The bottom of cooling device 2 is equipped with the first discharge gate that is used for discharging the tar that condenses, and the below of cooling device 2 is arranged in to warehouse 3, and the top of warehouse 3 is equipped with first feed inlet, and first feed inlet links to each other with first discharge gate.

According to the tar recovery device provided by the embodiment of the utility model, the coke making tail gas in the coke making furnace 1 enters the cooling device 2 through the first air outlet and the first air inlet. And then, the cooling device 2 cools the coke making tail gas, and tar in the coke making tail gas is condensed in a low-temperature state and enters the storage bin 3 through the first discharge port and the first feed port. Therefore, the tar is stored and recycled, the tar is convenient to sell as a product, and the utilization rate and the economic benefit of the tar are improved.

The tar content in the cooled coke making tail gas is greatly reduced, and the cooled coke making tail gas can be directly used as fuel gas, so that the storage and the long-distance transmission of chemical energy/heat energy are realized.

Specifically, the storage bin 3 is a stainless steel anti-corrosion storage bin 3.

Specifically, the coke oven 1 may be a coal-based coke oven 1 or a biomass coke oven 1.

For ease of understanding, arrow a in fig. 1 shows the up-down direction of the tar recovery device.

In some embodiments, as shown in fig. 1, the cooling device 2 comprises a first heat exchanger 21 and a driving device, the first heat exchanger 21 having a first hot fluid channel capable of exchanging heat and a first cold fluid channel, the first hot fluid channel being for communication with the first air outlet. The drive means are connected to the first heat exchanger 21 for feeding cooling fluid into the first cold fluid channel.

Therefore, the coking tail gas in the first hot fluid channel is cooled by heat exchange with the cooling fluid in the first cold fluid channel, so that the condensation of tar in the coking tail gas is ensured.

In some embodiments, as shown in fig. 1, the first heat exchanger 21 comprises a shell-and-tube heat exchanger.

The shell-and-tube heat exchanger is selected, so that the coke making tail gas can flow outside the heat transfer tube bundle of the shell-and-tube heat exchanger, and after tar is condensed, the tail gas falls between the shell of the shell-and-tube heat exchanger and the heat transfer tube bundle, thereby being more beneficial to discharging the tar.

It is understood that the first outlet is provided in the shell of the shell-and-tube heat exchanger.

In some embodiments, the drive means comprises a fan or a water pump.

When the driving device adopts a fan, the cooling fluid is low-temperature nitrogen. When the driving device adopts a water pump, the cooling fluid is industrial water.

Specifically, the fan is a centrifugal fan capable of pressurizing nitrogen gas.

Wherein nitrogen can be produced by an air compressor.

In some embodiments, as shown in fig. 1, the cooling device 2 further comprises a second heat exchanger 22, the second heat exchanger 22 having a second hot fluid channel capable of exchanging heat and a second cold fluid channel, the inlet of the second hot fluid channel constituting the first air inlet, the outlet of the second hot fluid channel being connected to the first hot fluid channel, the second cold fluid channel being adapted to be fed with heat transfer oil.

Firstly, the coke making tail gas in the coke making furnace 1 enters the second hot fluid channel of the second heat exchanger 22 and exchanges heat with the heat conduction oil in the second cold fluid channel, so that the first-stage cooling of the coke making tail gas is realized, and at the moment, the tar in the coke making tail gas is not reduced to the condensation temperature, so that the tar is not condensed yet. Secondly, the coke making tail gas enters the first thermal fluid channel through the outlet of the second thermal fluid channel, the first heat exchanger 21 carries out secondary cooling on the coke making tail gas, and meanwhile, tar is condensed.

The temperature of the coke making tail gas entering the first heat exchanger 21 is lower due to the design, so that the cooling of the first heat exchanger 21 is facilitated, and the cooling rate of the first heat exchanger 21 on the coke making tail gas and the condensation amount of tar are improved.

Specifically, the temperature of the coke making tail gas discharged from the coke making furnace 1 is 500-600 ℃.

Specifically, the temperature of the coke making tail gas exiting the second heat exchanger 22 is substantially 300 ℃.

Specifically, the temperature of the coke making tail gas discharged from the first heat exchanger 21 is substantially 100 ℃.

The tar in the coke-making tail gas is coagulated and separated out at 300-100 ℃.

The working temperature of the heat transfer oil was approximately 400 ℃.

It will be appreciated that the second heat exchanger 22 is located downstream of the coke oven 1 and upstream of the first heat exchanger 21.

In some embodiments, as shown in fig. 1, the second heat exchanger 22 comprises one of a tube-in-tube, a double-tube, and a spray heat exchanger.

Thereby, the implementation of the second heat exchanger 22 is increased.

In some embodiments, as shown in fig. 1, the tar recovery device further includes a heat storage bin 4, where the heat storage bin 4 has a first cavity and a second cavity capable of exchanging heat, where the first cavity contains molten salt, and the second cavity is connected to the second cold fluid channel and exchanges heat.

And after heat exchange is performed between the heat conduction oil in the second cold fluid channel and the coke making tail gas in the second hot fluid channel, the temperature is increased. After that, the heat transfer oil exchanges heat with the second cavity, and the molten salt realizes the heat storage of the heat transfer oil. Therefore, the heat utilization rate of the coke making tail gas is improved.

Specifically, the heat storage bin 4 is located below the second heat exchanger 22.

In some embodiments, as shown in fig. 1, the tar recovery device further comprises an electric catcher 5 for capturing the condensed tar in the coking tail gas, wherein an inlet of the electric catcher 5 is connected with an outlet of the first hot fluid channel, the electric catcher 5 is arranged above the storage bin 3, a second discharge hole is arranged at the bottom of the electric catcher 5, a second feed hole is arranged at the top of the storage bin 3, and the second feed hole is connected with the second discharge hole.

Therefore, after passing through the first heat exchanger 21, the residual condensed tar in the coke making tail gas is trapped by the electric trap 5 and enters the storage bin 3 through the second discharge port and the second feed port, so that the tar is collected again.

Specifically, the electric catcher 5 is a weak electric net catcher.

In some embodiments, a first material guiding plate and a second material guiding plate are arranged in the storage bin 3, the first material guiding plate is adjacent to the first feeding hole and is used for receiving condensed tar of the first feeding hole, and an included angle between the first material guiding plate and the horizontal plane is smaller than 90 degrees and larger than 0 degrees; the second material guiding plate is adjacent to the second feeding hole and used for receiving condensed tar of the second feeding hole, and an included angle between the second material guiding plate and the horizontal plane is smaller than 90 degrees and larger than 0 degrees.

The first guide plate is used for guiding the condensed tar of the first feed inlet to fall into the storage bin 3, and the second guide plate is used for guiding the condensed tar of the second feed inlet to fall into the storage bin 3.

Preferably, the included angle between the first guide plate and the horizontal plane is 60 degrees.

Preferably, the included angle between the second guide plate and the horizontal plane is 60 degrees.

In some embodiments, as shown in fig. 1, the tar recovery device further comprises a gas line 6, a first end of the gas line 6 being connected to the outlet of the electric catcher 5, and a second end of the gas line 6 being connected to the burner 7.

Thus, the coke making tail gas after the twice tar removal can be used as fuel gas and is introduced into the combustion furnace 7 for combustion.

Optionally, the tar-removed coke-making tail gas can be used for other scenes, so that the utilization of the heat value is realized.

In summary, the tar recovery device of the embodiment of the utility model has the following technical effects:

1. the recovery rate of tar in the coke-making tail gas is improved through the sectional condensation of the first heat exchanger 21 and the second heat exchanger 22.

2. By the second heat exchanger 22, the waste heat utilization in the coke making tail gas is realized.

3. By means of the electric trap 5, a fine trapping of tar is achieved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A tar recovery device, comprising:

the coke making furnace is provided with a first air outlet for discharging coke making tail gas;

the cooling device is provided with a first air inlet which is connected with the first air outlet; and

the cooling device comprises a cooling device, wherein a cooling device is arranged at the bottom of the cooling device, a first discharging hole for discharging condensed tar is formed in the bottom of the cooling device, the cooling device is arranged below the cooling device, a first feeding hole is formed in the top of the cooling device, and the first feeding hole is connected with the first discharging hole.

2. The tar recovery device according to claim 1, wherein the cooling device comprises:

a first heat exchanger having a first hot fluid passage and a first cold fluid passage capable of exchanging heat, the first hot fluid passage being for communication with the first air outlet; and

and the driving device is connected with the first heat exchanger so as to facilitate the cooling fluid to be introduced into the first cold fluid channel.

3. The tar recovery device of claim 2, wherein the first heat exchanger comprises a shell-and-tube heat exchanger.

4. The tar recovery device of claim 2, wherein the driving device comprises a fan or a water pump.

5. The tar recovery device according to claim 2, characterized in that the cooling device further comprises a second heat exchanger having a second hot fluid channel and a second cold fluid channel capable of exchanging heat, the inlet of the second hot fluid channel constituting the first air inlet, the outlet of the second hot fluid channel being connected to the first hot fluid channel, the second cold fluid channel being adapted to be fed with heat transfer oil.

6. The tar recovery device of claim 5, wherein the second heat exchanger comprises one of a tube-in-tube, a double-tube, and a spray heat exchanger.

7. The tar recovery device of claim 5 further comprising a thermal storage compartment having a first cavity and a second cavity therein capable of exchanging heat, the first cavity containing molten salt, the second cavity being connected to and exchanging heat with the second cold fluid channel.

8. The tar recovery device of claim 2 further comprising an electrical trap for trapping condensed tar in the coking tail gas, wherein an inlet of the electrical trap is connected to an outlet of the first thermal fluid channel, the electrical trap is disposed above the bin, a second outlet is disposed at a bottom of the electrical trap, a second inlet is disposed at a top of the bin, and the second inlet is connected to the second outlet.

9. The tar recovery device of claim 8, wherein a first guide plate and a second guide plate are disposed in the bin, the first guide plate being adjacent to the first feed port and configured to receive condensed tar from the first feed port, an included angle between the first guide plate and a horizontal plane being less than 90 degrees and greater than 0 degrees; the second material guiding plate is adjacent to the second feeding hole and used for receiving the condensed tar of the second feeding hole, and an included angle between the second material guiding plate and the horizontal plane is smaller than 90 degrees and larger than 0 degrees.

10. The tar recovery device of claim 8 further comprising a gas line, a first end of the gas line being coupled to the outlet of the electrical trap, and a second end of the gas line being coupled to the burner.

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