CN115970358A - Oil residue separation and recovery system for tar residue - Google Patents

Abstract

The invention discloses an oil residue separation and recovery system of tar residues, which comprises a residue storage hopper and a recovery device, wherein a separation component is arranged in the residue storage hopper, the separation component divides the interior of the residue storage hopper into a first cavity and a second cavity, the first cavity is used for storing the tar residues, a filter hole communicated with the first cavity and the second cavity is formed in the separation component, an oil-water mixture can flow into the second cavity from the first cavity through the filter hole, the recovery device is communicated with the second cavity, and the recovery device is used for recovering the oil-water mixture in the second cavity. The oil residue separation and recovery system for the tar residue can separate the oil-water mixture and the tar residue through the separation component to purify the oil-water mixture, the purified oil-water mixture can automatically flow to the recovery device, the oil-water mixture does not need to be salvaged and recovered manually, the efficiency of recovering the oil-water mixture can be effectively improved, and the phenomenon that the oil-water mixture splashes to pollute the operating environment is avoided.

Description

Oil residue separation and recovery system for tar residue

Technical Field

The invention relates to the technical field of tar residue treatment, in particular to an oil residue separation and recovery system for tar residue.

Background

In the production process of a coke oven, organic compounds with high boiling points are condensed to form coal tar under the condition that produced high-temperature coke oven gas is cooled by a gas collecting pipe or a primary cooler, meanwhile, coal dust, coke powder and free carbon generated by pyrolysis at the top of a carbonization chamber and porous substances brought in when the gas collecting pipe is cleaned are mixed in the coal tar to form lumps with different sizes, the lumps are called tar residues, and the coal tar needs to be purified.

At present, mechanical clarification separation equipment is generally used for separating tar residues in coal tar, the separated tar residues can be discharged into a residue storage hopper, and the residue storage hopper is transported to a coal preparation process through a conveying device after being filled with the tar residues for secondary recycling of production raw materials, such as tar residue coal blending coking, the tar residues and coal are simultaneously converted into coke, tar and coke oven gas, so that harmless treatment and resource utilization of the tar residues are realized. However, the tar residues separated out by the mechanical settling tank still contain more tar and ammonia water mixtures, the viscosity is high, the follow-up coal blending is not accurate, the coke quality is seriously influenced, the tar residues are discharged to the residue storage hopper to splash, the operation environment is polluted, and the tar and ammonia water mixtures in the residue storage hopper need to be treated.

Because the density of the tar and ammonia water mixture is less than that of the tar residue, the tar and ammonia water mixture in the storage hopper can float upwards, and the tar residue can sink, the oil-water mixture in the storage hopper is usually salvaged by manpower at present, but the processing method has high working strength and low working efficiency.

Disclosure of Invention

The embodiment of the invention aims to: the oil residue separation and recovery system for the tar residue is simple to operate and can be used for quickly separating and recovering an oil-water mixture in the tar residue.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an oil residue separation recovery system of tar sediment, includes that the sediment fill and recovery unit, be provided with in the sediment fill the separable set, the separable set will divide into first cavity and second cavity in the sediment fill, first cavity is used for storing the tar sediment, be provided with the intercommunication on the separable set first cavity with the filtration pore of second cavity, oil water mixture can be followed first cavity passes the filtration pore flows extremely in the second cavity, recovery unit with second cavity intercommunication, recovery unit is used for retrieving in the second cavity oil water mixture.

As an optimal scheme of the oil residue separation and recovery system of the tar residue, the separation component and the bottom of the residue storage hopper form an included angle, and the filter hole is adjacent to the top of the residue storage hopper.

As an optimal selection scheme of the oil residue separation recovery system of tar oil residue, the separable set is including baffle and the filter screen that is the contained angle connection, the baffle will the sediment storage fill is separated into first cavity with the second cavity, the filter screen is located the baffle top, and extend to in the second cavity, the baffle with contained angle alpha has between the sediment storage fill bottom, the filter screen with contained angle beta has between the sediment storage fill bottom, alpha > beta.

As an optimal scheme of the oil residue separation and recovery system of the tar residue, one end of the filter screen is hinged with the baffle, and the other end of the filter screen is clamped with the cavity wall of the second cavity.

As a preferable scheme of the oil residue separation and recovery system for tar residue, in a direction from the bottom of the residue storage hopper to the top of the residue storage hopper, the sidewall of the residue storage hopper is inclined toward the outside, and the separation assembly is inclined toward the second chamber, so that the cross-sectional area of the first chamber is gradually enlarged from the bottom to the top.

As a preferable scheme of the oil residue separation and recovery system for the tar residue, the recovery device comprises a storage member and a siphon assembly, the siphon assembly is communicated with the second chamber through a first pipeline, the storage member is communicated with the siphon assembly through a second pipeline, the oil residue separation and recovery system for the tar residue further comprises a water replenishing pipeline, the water replenishing pipeline is communicated with the siphon assembly, the first pipeline is provided with a first control valve, the second pipeline is provided with a second control valve, and the water replenishing pipeline is provided with a fifth control valve;

when the oil-water mixture in the second chamber needs to be discharged, the first control valve and the fifth control valve are opened firstly, the second control valve and the water supplementing pipeline can supplement water for the first pipeline, the second control valve is opened after water is supplemented, the fifth control valve is closed, the siphon assembly is started, and the oil-water mixture can flow into the material storage part through the first pipeline and the second pipeline.

As a preferable scheme of the oil residue separation and recovery system of the tar residue, the water supplementing pipeline is a residual ammonia water pipeline.

As an optimal scheme of the oil residue separation and recovery system of the tar residue, the residue storage hopper is provided with an oil discharge pipe, one end of the oil discharge pipe extends to the bottom of the second cavity, and the other end of the oil discharge pipe extends to the outer side of the second cavity and is detachably connected with the first pipeline.

As a preferable scheme of the oil residue separation and recovery system of the tar residue, the siphon assembly comprises a support and a body arranged on the support, and a pulley is arranged at the bottom of the support.

As an optimal scheme of the oil residue separation and recovery system for the tar residue, the system further comprises a separation groove and a residue scraping groove, wherein the separation groove is used for separating tar in the oil-water mixture, the residue scraping groove is used for separating the tar residue in the oil-water mixture, the recovery device is communicated with the separation groove through a third pipeline, the recovery device is communicated with the residue scraping groove through a fourth pipeline, the third pipeline is provided with a third control valve, and the fourth pipeline is provided with a fourth control valve.

The invention has the beneficial effects that: the back in the first cavity of storage sediment fill is discharged to the tar sediment that the coking produced, the tar sediment can form the layering with oil water mixture, oil water mixture can wear the filtration pore from first cavity and flow to in the second cavity, and block most tar sediment and get into the second cavity, can reduce the tar sediment content in the oil water mixture by a wide margin, purification oil water mixture, and the oil water mixture after the purification can carry out recycle through recovery unit, need not artifical salvage recovery oil water mixture, can improve the efficiency of retrieving oil water mixture effectively, avoid oil water mixture to splash and the polluted operation environment.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

FIG. 1 is a schematic structural diagram of an oil residue separation and recovery system for tar residue according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a slag storage hopper according to an embodiment of the invention.

Fig. 3 is a perspective view of the slag storage hopper according to the embodiment of the invention.

In the figure:

1. a slag storage hopper; 101. a first chamber; 102. a second chamber; 103. an oil discharge pipe; 2. a separation assembly; 201. a baffle plate; 202. filtering with a screen; 3. a recovery device; 301. a material storage piece; 302. a siphon assembly; 3021. a support; 3022. a body; 3023. a pulley; 4. a first pipeline; 5. a second pipeline; 6. a water replenishing pipeline; 7. a first control valve; 8. a second control valve; 9. a fifth control valve; 10. a separation tank; 11. a slag scraping groove; 12. a third pipeline; 13. a fourth pipeline; 14. a third control valve; 15. a fourth control valve; 16. a hopper; 17. a suction pump; 18. and (4) a joint.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the coking process, tar residues and ammonia water are mixed in the tar formed in the primary refining process, and the tar is purified by using mechanical clarification and separation equipment. Mechanized clarification splitter is including scraping sediment groove and tar aqueous ammonia mixture separating tank, and the tar sediment in the tar can be separated out through scraping the sediment groove to the tar that the primary refining was made obtains tar aqueous ammonia mixture, and tar aqueous ammonia mixture can separate out higher purity tar through tar aqueous ammonia mixture separating tank. Wherein, the tar slag separated from the slag scraping groove can be conveyed into the slag storage hopper for recycling through the slag scraping machine.

The invention provides an oil residue separation and recovery system for tar residues, which is used for separating and recovering an oil-water mixture in the tar residues, wherein the oil-water mixture mainly comprises tar and ammonia water. Referring to fig. 1 to 3, the tar residue separation and recovery system includes a residue storage hopper 1 with an open top and a recovery device 3, a separation component 2 is disposed in the residue storage hopper 1, the separation component 2 separates the interior of the residue storage hopper 1 into a first chamber 101 and a second chamber 102, the first chamber 101 is used for storing tar residues, the second chamber 102 is used for storing separated oil-water mixtures, the recovery device 3 is communicated with the second chamber 102 through a pipeline, the recovery device 3 is used for recovering the oil-water mixtures in the second chamber 102, a filter hole communicating the first chamber 101 with the second chamber 102 is disposed on the separation component 2, after tar residues generated during coking are discharged into the first chamber 101 of the residue storage hopper 1, the tar residues and the oil-water mixtures can form a layer, the oil-water mixtures can flow into the second chamber 102 through the filter hole from the first chamber 101, and most of the tar residues are prevented from entering the second chamber 102, the content of the tar residues in the oil-water mixtures can be greatly reduced, the oil-water mixtures can be purified, the oil-water mixtures can automatically flow to the recovery device 3, the oil-water mixtures can be effectively recovered, and the oil-water mixtures can be prevented from being polluted.

Specifically, the separating assembly 2 and the bottom of the slag storage hopper 1 are arranged at an included angle, that is, the separating assembly 2 enables the first chamber 101 and the second chamber 102 to be spaced along the horizontal direction, and the top of the separating assembly 2 is provided with a filtering hole which is adjacent to the top of the slag storage hopper 1. According to the density relation of the tar residue and the oil-water mixture, the weight of the tar residue is larger than that of the oil-water mixture, therefore, the tar residue can be deposited at the bottom of the first chamber 101, the oil-water mixture can float above the tar residue, and when the amount of the tar residue in the first chamber 101 is increased to a position where the liquid level of the oil-water mixture exceeds the position of the filter hole, the oil-water mixture can flow into the second chamber 102 through the filter hole.

Preferably, the separating assembly 2 is not centrally located within the hopper 1 so that the storage space of the first chamber 101 is greater than the storage space of the second chamber 102. The oil-water mixture in the tar residue accounts for a content far lower than the tar residue agglomerate, so the design can improve the storage space of the first chamber 101, ensure that the residue storage hopper 1 can store the tar residue agglomerate as much as possible, and improve the space utilization rate of the residue storage hopper 1.

In this embodiment, referring to fig. 1 to 3, the slag storage hopper 1 is a trumpet hopper, and along the direction from the bottom of the slag storage hopper 1 to the top of the slag storage hopper 1, the inner space of the slag storage hopper 1 gradually expands, the side wall of the slag storage hopper 1 inclines towards the outer side of the slag storage hopper 1, and along the direction from the bottom of the slag storage hopper 1 to the top of the slag storage hopper 1, the separating component 2 inclines towards the second chamber 102, so that the cross-sectional area of the first chamber 101 gradually expands from the bottom to the top, that is, the first chamber 101 is in a trumpet shape with a wide top and a narrow bottom. During the discharging of the tar slag into the first chamber 101 by the slag chute 11, the wall of the first chamber 101 can guide the tar slag to the bottom, helping to distribute the tar slag evenly within the first chamber 101.

In other embodiments, the separation assembly 2 may also be arranged perpendicular to the bottom of the slag hopper 1.

Specifically, referring to fig. 2 and 3, the separation assembly 2 includes a baffle 201 and a filter screen 202 connected at an included angle, a filter hole is provided on the filter screen 202, the baffle 201 is disposed in the residue storage hopper 1, the baffle 201 divides the residue storage hopper 1 into a first chamber 101 and a second chamber 102, the filter screen 202 is located above the baffle 201 and extends to the second chamber 102, and in the process that the oil-water mixture flows into the second chamber 102 from the first chamber 101, the oil-water mixture can block tar residue flowing into the second chamber 102 along with the oil-water mixture through the filter screen 202.

An included angle alpha is formed between the baffle 201 and the bottom of the slag storage hopper 1, an included angle beta is formed between the filter screen 202 and the bottom of the slag storage hopper 1, beta is smaller than alpha and smaller than 90 degrees, namely the gradient of the filter screen 202 is smaller than that of the baffle 201, so that the filter screen 202 is gentler than that of the baffle 201, and the oil-water mixture is more favorably enabled to flow to the second chamber 102 through the filter screen 202.

Preferably, with reference to fig. 2, the second chamber 102 has a chamber wall opposite the baffle 201, the baffle 201 being parallel to the chamber wall of the second chamber 102 opposite the baffle 201.

Specifically, in order to facilitate the oil-water mixture flowing to the second chamber 102 through the screen 202, the included angle between the baffle 201 and the screen 202 is 100 ° to 150 °. Preferably, the included angle between the baffle 201 and the filter screen 202 is 110 °, 120 °, 130 °, 140 °, and the like.

In one embodiment, one end of the filter screen 202 is hinged to the baffle 201, and the other end is connected to the wall of the second chamber 102 by a snap or a lock. After the filter screen 202 is used for a long time, the tar residues can block the filter holes, and the filter screen 202 can be arranged on the baffle 201 in a turnover mode through the design, so that the filter screen 202 can be conveniently cleaned.

Specifically, referring to fig. 1, the recycling device 3 includes a storage member 301 and a siphon assembly 302, the siphon assembly 302 is communicated with the second chamber 102 through a first pipeline 4, the storage member 301 is communicated with the siphon assembly 302 through a second pipeline 5, the tar residue separation recycling system further includes a water replenishing pipeline 6, the water replenishing pipeline 6 is communicated with the siphon assembly 302, the first pipeline 4 is provided with a first control valve 7, the second pipeline 5 is provided with a second control valve 8, and the water replenishing pipeline 6 is provided with a fifth control valve 9.

When the oil-water mixture in the second chamber 102 needs to be discharged, the first control valve 7 and the fifth control valve 9 are opened, the second control valve 8 is closed, and the water replenishing agent in the water replenishing pipeline 6 can flow to the first pipeline 4 to replenish the first pipeline 4; after water is supplemented, the second control valve 8 is opened, the fifth control valve 9 is closed, the siphon assembly 302 is started, and under the siphon action, the oil-water mixture can be discharged into the storage member 301 through the first pipeline 4 and the second pipeline 5. Because the oil-water mixture has poor fluidity and low oil discharge efficiency, the design can effectively improve the discharge efficiency of the oil-water mixture through the siphon assembly 302.

In this embodiment, the storage member 301 is an underground tank, and the storage tank and the slag hopper 1 have a height difference so as to form a siphon effect. The inlet of the storage tank is provided with a horn-shaped hopper 16, and the inlet of the hopper 16 is communicated with the outlet of the second pipeline 5 and is used for recovering the oil-water mixture discharged from the second chamber 102.

Preferably, the water replenishing pipeline 6 is a residual ammonia pipeline, that is, the water replenishing agent is residual ammonia separated by the tar-ammonia mixture separation tank 10. The residual ammonia water contains toxic and harmful substances such as ammonia, phenol, sulfide, cyanide, pyridine, coal tar and the like, and is a main source of industrial sewage in a coking process, the design adopts the residual ammonia water as a water replenishing agent of the siphon component 302, wherein the temperature of the residual ammonia water is 60-70 ℃, the residual ammonia water can be reused so as to achieve the purpose of treating the residual ammonia water, and the residual ammonia water is an alkaline substance and can neutralize the pyrooleic acid in an oil-water mixture, so that the pipeline protection effect is achieved, and meanwhile, the residual ammonia water also has lubricity and is beneficial to improving the fluidity of the oil-water mixture.

Specifically, referring to fig. 1 and 2, the slag storage hopper 1 is further provided with an oil drain pipe 103, one end of the oil drain pipe 103 extends to the bottom of the second chamber 102, and the other end extends to the outside of the second chamber 102 and is detachably connected with the first pipeline 4. After the slag storage hopper 1 is filled with tar slag, the filled slag storage hopper 1 is removed and the empty slag storage hopper 1 is replaced, so that the second chamber 102 is detachably connected with the first pipeline 4 to quickly disconnect the first pipeline 4, so that the slag storage hopper 1 can be replaced.

Illustratively, the drain pipe 103 is removably connected to the first pipe 4 by a fitting 18 to facilitate disconnection of the first pipe 4.

In this embodiment, the first and second pipelines 4 and 5 are hoses, the siphon assembly 302 includes a bracket 3021 and a body 3022 disposed on the bracket 3021, and a pulley 3023 is disposed at the bottom of the bracket 3021. Because there is certain deviation in the parking position of the sediment fill 1 after changing at every turn, lead to first pipeline 4 and oil drain pipe 103's interval too big and unable connection easily, siphon subassembly 302 can remove through pulley 3023 to adjust the position of first pipeline 4 and second pipeline 5, guarantee that first pipeline 4 and oil drain pipe 103 can connect smoothly.

Wherein, the body 3022 can adopt siphon device of the prior art.

Illustratively, the pulley 3023 is a universal wheel, and the pulley 3023 is provided with a locking structure, which can limit the movement of the pulley 3023 and prevent the siphon assembly 302 from moving due to misoperation.

In another embodiment, the first pipeline 4 and/or the oil drain pipe 103 are corrugated pipes. This design can be through adjusting the length and the direction of first pipeline 4 and oil drain pipe 103 to guarantee that first pipeline 4 and oil drain pipe 103 can connect smoothly.

Specifically, the oil residue separation and recovery system for the tar residue further comprises a separation tank 10 and a residue scraping tank 11, wherein the separation tank 10 is used for separating tar and ammonia water in an oil-water mixture, the residue scraping tank 11 is used for separating the tar residue in the oil-water mixture, the recovery device 3 is communicated with the separation tank 10 through a third pipeline 12, the recovery device 3 is communicated with the residue scraping tank 11 through a fourth pipeline 13, the third pipeline 12 is provided with a third control valve 14, and the fourth pipeline 13 is provided with a fourth control valve 15.

The oil-water mixture recovered into the storage piece 301 can be recycled for the second time, when the content of tar residues in the recovered oil-water mixture is low, the third control valve 14 is opened, the fourth control valve 15 is closed, and the oil-water mixture can be conveyed into the separation tank 10 for clarification and separation again to separate and recover tar; when the content of the tar residues in the recovered oil-water mixture is high, the fourth control valve 15 is opened, the third control valve 14 is closed, the oil-water mixture can be conveyed into the residue scraping groove 11 to remove residues again until the content of the tar residues in the oil-water mixture meets the production requirement, and the oil-water mixture is conveyed to the separation groove 10 to be clarified and separated.

It should be noted that, the separation tank 10 and the scum trough 11 can adopt the structure in the prior art, and are not described herein again.

Further, a suction pump 17 is provided on the third pipe 12 and the fourth pipe 13, and the suction pump 17 can convey the oil-water mixture into the separation tank 10 or the scum tank 11.

The oil residue separation and recovery system for the tar residue can separate and recover tar in the tar residue, and specifically comprises the following operation steps:

s100, placing the slag storage hopper 1 below a discharge hole of the slag scraping groove 11 so that tar slag discharged from the slag scraping groove 11 can be discharged into a first chamber 101 of the slag storage hopper 1;

when the liquid level of the oil-water mixture in the slag storage hopper 1 exceeds the joint of the baffle 201 and the filter screen 202, the communicating areas of the first chamber 101 and the second chamber 102 are both the oil-water mixture, and the oil-water mixture can flow to the second chamber 102 through the filter holes, so that the siphon assembly 302 can be started to discharge oil;

s200, siphon oil drainage: firstly opening a first control valve 7 and a fifth control valve 9, and closing a second control valve 8 to supplement ammonia water to the first pipeline 4;

when the mixture of oil and water in the second chamber 102 is bubbled, the completion of water supplement is indicated. At this time, the fifth control valve 9 is closed, the second control valve 8 is opened, and the siphon assembly 302 is started, so that the first pipeline 4 and the second chamber 102 have a pressure difference with the second pipeline 5, and a siphon effect is formed, and the oil-water mixture in the second chamber 102 can automatically flow into the storage member 301 through the first pipeline 4 and the second pipeline 5;

s300, detecting whether the content of the tar residue of the oil-water mixture in the storage piece 301 meets the production requirement;

s400, if the production requirement is met, opening the third control valve 14, closing the fourth control valve 15, starting the suction pump 17, conveying the oil-water mixture into the separation tank 10 for clarification and separation, so as to separate tar and recycle the tar;

and S500, if the production requirement is not met, opening the fourth control valve 15, closing the third control valve 14, starting the suction pump 17, conveying the oil-water mixture into the slag scraping groove 11 for deslagging again, and repeating the steps S300 to S500 until the content of tar residue in the oil-water mixture meets the production requirement.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are based on the orientations and positional relationships shown in the drawings for convenience in description and simplicity in operation, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and these embodiments will fall within the scope of the present invention.

Claims (10)

1. The oil residue separation and recovery system for tar residue is characterized by comprising the following components:

the separation assembly divides the interior of the slag storage hopper into a first cavity and a second cavity, the first cavity is used for storing tar residues, the separation assembly is provided with a filter hole communicated with the first cavity and the second cavity, and an oil-water mixture can flow from the first cavity into the second cavity through the filter hole;

and the recovery device is communicated with the second chamber and is used for recovering the oil-water mixture in the second chamber.

2. The system of claim 1, wherein the separation assembly is disposed at an angle to the bottom of the slag hopper, and the filter hole is adjacent to the top of the slag hopper.

3. The tar residue separating and recycling system of claim 2, wherein the separating assembly comprises a baffle and a filter screen connected at an included angle, the baffle divides the slag storage hopper into the first chamber and the second chamber, the filter screen is located above the baffle and extends into the second chamber, an included angle α is formed between the baffle and the bottom of the slag storage hopper, an included angle β is formed between the filter screen and the bottom of the slag storage hopper, and α > β.

4. The tar residue separation and recovery system of claim 3, wherein one end of the filter screen is hinged to the baffle, and the other end of the filter screen is clamped to the wall of the second chamber.

5. The system of claim 2, wherein the sidewall of the slag hopper is inclined toward the outside in a direction from the bottom of the slag hopper toward the top of the slag hopper, and the separation assembly is inclined toward the second chamber such that the cross-sectional area of the first chamber is gradually enlarged from the bottom toward the top.

6. The system for separating and recycling the oil residue of the tar residue according to any one of claims 1 to 5, wherein the recycling device comprises a storage member and a siphon assembly, the siphon assembly is communicated with the second chamber through a first pipeline, the storage member is communicated with the siphon assembly through a second pipeline, the system for separating and recycling the tar residue further comprises a water replenishing pipeline, the water replenishing pipeline is communicated with the siphon assembly, the first pipeline is provided with a first control valve, the second pipeline is provided with a second control valve, and the water replenishing pipeline is provided with a fifth control valve;

when the oil-water mixture in the second chamber needs to be discharged, the first control valve and the fifth control valve are opened firstly, the second control valve is closed, the water supplementing pipeline can supplement water for the first pipeline, the second control valve is opened after water is supplemented, the fifth control valve is closed, the siphon assembly is started, and the oil-water mixture can flow into the material storage member through the first pipeline and the second pipeline.

7. The system of claim 6, wherein the water supply line is a residual ammonia line.

8. The tar residue separation and recovery system according to claim 6, wherein the residue storage hopper is provided with an oil discharge pipe, one end of the oil discharge pipe extends to the bottom of the second chamber, and the other end of the oil discharge pipe extends to the outside of the second chamber and is detachably connected to the first pipeline.

9. The system for separating and recovering the oil residue of the tar residue as claimed in claim 6, wherein the siphon assembly comprises a bracket and a body disposed on the bracket, and a pulley is disposed at the bottom of the bracket.

10. The tar residue separation and recovery system according to any one of claims 1 to 4, further comprising a separation tank for separating tar from the oil-water mixture, and a residue scraping tank for separating the tar residue from the oil-water mixture, wherein the recovery device is communicated with the separation tank through a third pipeline, the recovery device is communicated with the residue scraping tank through a fourth pipeline, the third pipeline is provided with a third control valve, and the fourth pipeline is provided with a fourth control valve.

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