Tar circulating treatment system

Abstract

The utility model provides a tar circulating treatment system which comprises a tar and ammonia water separating tank, a tar centrifugal machine, a tar middle tank, a tar storage tank, a tar loading platform and an oil return pipeline, the tar and ammonia water separating tank, the tar centrifugal machine, the tar middle tank, the tar storage tank and the tar loading platform are sequentially communicated through an oil conveying pipeline, and the tar storage tank is communicated with the tar loading platform through an oil return pipeline. One end of the oil return pipeline is communicated with the oil conveying pipeline between the tar storage tank and the tar loading platform, and the other end of the oil return pipeline is communicated with the tar and ammonia water separation tank. According to the system, tar in the tar storage tank can be circularly treated, the tar at the bottom of the tar storage tank and newly produced tar are continuously subjected to three-phase separation through the tar centrifugal machine, and it is guaranteed that the quality of the tar in the tar storage tank reaches the standard. The tar standing at the bottom of the tar storage tank is circularly treated, so that tar residue accumulation and water residue in the storage tank are avoided, and the effective use volume of the storage tank is kept not attenuated.

Description

Technical Field

[0001] The utility model relates to the field of chemical industry, in particular to a tar circulation treatment system. Background Art

[0002] At present, the tar-ammonia mixture in the tar-ammonia separation tank of the coking plant is transported to the tar centrifuge for three-phase separation through the tar intermediate pump. The ammonia with the lowest density directly enters the circulating ammonia tank, and the tar residue with the highest density enters the tar residue basin. The qualified tar (water content ≤4%, ash content ≤0.13%) after separation enters the tar intermediate tank and is sent to the tar storage tank for storage through the tar pump. According to customer needs, the tar export pump transports it to the tar loading platform for loading and export, realizing the continuous production and export of tar.

[0003] During the long-term storage and shipment of tar in the tar storage tank, tar residue will gradually settle at the bottom of the tar storage tank, and some water in the tar will gradually precipitate and remain in the tar storage tank. After a period of use, the tar residue at the bottom of the tar storage tank increases and the water content at the top increases. When the tar is sold to the low liquid level of the storage tank, the tar residue content and water content increase, the tar ash content exceeds 0.13%, and the water content exceeds 4%. The tar does not meet the quality requirements, and the shipment is stopped. The remaining tar in the tar storage tank cannot be exported normally. As time goes by, the minimum liquid level for shipment will gradually increase, and the effective storage capacity of the tar storage tank will decline. Utility Model Content

[0004] The purpose of the utility model is to provide a tar circulation processing system, which realizes timely and effective treatment of tar at the bottom of the tar storage tank, continuously improves the quality of tar at the bottom of the tar storage tank, realizes continuous and stable export, and ensures that the storage capacity of the tar storage tank is not attenuated.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tar circulation treatment system comprises a tar-ammonia water separation tank, a tar centrifuge, a tar intermediate tank, a tar storage tank, a tar loading platform and an oil return pipeline, wherein an oil delivery pipeline connects the tar-ammonia water separation tank, the tar centrifuge, the tar intermediate tank, the tar storage tank and the tar loading platform in sequence, one end of the oil return pipeline is connected to the oil delivery pipeline between the tar storage tank and the tar loading platform, and the other end of the oil return pipeline is connected to the tar-ammonia water separation tank.

[0007] Further, in the above-mentioned tar circulation treatment system, a tar intermediate pump is arranged on the oil pipeline between the tar-ammonia separation tank and the tar centrifuge, a tar-ammonia separation tank outlet valve is arranged at the outlet of the tar-ammonia separation tank, a tar intermediate pump outlet valve is arranged at the outlet of the tar intermediate pump, a tar centrifuge outlet valve is arranged at the outlet of the tar centrifuge, a tar pump is arranged on the oil pipeline between the tar intermediate tank and the tar storage tank, a tar intermediate tank outlet valve is arranged at the outlet of the tar intermediate tank, a tar pump outlet valve is arranged at the outlet of the tar pump, a tar export pump is arranged on the oil pipeline between the tar storage tank and the tar loading platform, a tar storage tank outlet valve is arranged at the outlet of the tar storage tank, a tar export pump outlet valve is arranged at the outlet of the tar export pump, and a tar loading platform inlet valve is arranged at the inlet of the tar loading platform.

[0008] Furthermore, the above-mentioned tar circulation treatment system also includes a tar residue basin and an ammonia water tank, and the tar residue basin and the ammonia water tank are both connected to the tar centrifuge.

[0009] Furthermore, in the above-mentioned tar circulation treatment system, one end of the return oil pipeline is connected to the oil delivery pipeline between the tar export pump and the outlet valve of the tar export pump, and a first valve is provided on the return oil pipeline.

[0010] Furthermore, the above-mentioned tar circulation treatment system also includes a return oil branch pipe, a second valve is arranged on the return oil pipeline between the first valve and the tar ammonia water separation tank, one end of the return oil branch pipe is connected to the return oil pipeline between the first valve and the second valve, and the other end of the return oil branch pipe is connected to the oil delivery pipeline between the tar intermediate pump and the tar centrifuge.

[0011] Furthermore, in the above-mentioned tar circulation treatment system, a third valve is provided on the oil return branch pipe.

[0012] Furthermore, in the above-mentioned tar circulation treatment system, after being treated by the tar circulation treatment system, the moisture content of the tar in the tar storage tank is ≤4%, and the ash content is ≤0.13%.

[0013] It can be seen from the analysis that the utility model discloses a tar circulation treatment system, which can circulate the tar in the tar storage tank, and continuously separate the tar at the bottom of the tar storage tank with the newly produced tar by using a tar centrifuge to perform three-phase separation, so as to ensure that the tar in the tar storage tank meets the quality standards. The tar standing at the bottom of the tar storage tank is circulated, and the tar residue and precipitated water at the bottom of the tar storage tank are continuously and stably cleaned out, so as to prevent the accumulation of tar residue and the residual water in the storage tank, and keep the effective use volume of the storage tank from decaying. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0016] Explanation of the reference numerals: 1 tar-ammonia separation tank; 2 outlet valve of tar-ammonia separation tank; 3 tar intermediate pump; 4 outlet valve of tar intermediate pump; 5 tar centrifuge; 6 outlet valve of tar centrifuge; 7 tar intermediate tank; 8 outlet valve of tar intermediate tank; 9 tar pump; 10 outlet valve of tar pump; 11 tar storage tank; 12 outlet valve of tar storage tank; 13 tar export pump; 14 outlet valve of tar export pump; 15 inlet valve of tar loading platform; 16 tar loading platform; 17 first valve; 18 second valve; 19 third valve; 20 tar residue basin; 21 ammonia tank; 22 oil pipeline; 23 return oil pipeline; 24 return oil branch pipe. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0018] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] One or more examples of the utility model are shown in the attached drawings. The detailed description uses numbers and letters to refer to the features in the drawings. Similar or similar marks in the drawings and descriptions have been used to refer to similar or similar parts of the utility model. As used herein, the terms "first", "second", and "third" etc. are used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of individual components.

[0020] like Figure 1 As shown, according to an embodiment of the utility model, a tar circulation treatment system is provided, comprising a tar-ammonia water separation tank 1, a tar centrifuge 5, a tar intermediate tank 7, a tar storage tank 11, a tar loading platform 16 and an oil return pipeline 23, wherein the oil delivery pipeline 22 connects the tar-ammonia water separation tank 1, the tar centrifuge 5, the tar intermediate tank 7, the tar storage tank 11 and the tar loading platform 16 in sequence, one end of the return oil pipeline 23 is connected to the oil delivery pipeline 22 between the tar storage tank 11 and the tar loading platform 16, and the other end of the return oil pipeline 23 is connected to the tar-ammonia water separation tank 1. The newly produced tar is processed by the tar-ammonia separation tank 1, the tar centrifuge 5 and the tar intermediate tank 7 in sequence and then stored in the tar storage tank 11. The tar stored in the tar storage tank 11 is exported through the tar loading platform 16. The system sets a return oil pipeline 23 so that the tar in the tar storage tank 11 can be returned to the tar-ammonia separation tank 1, and then the water and tar residue in the tar are separated by the tar centrifuge 5 to achieve the circulation treatment of the tar. Through the circulation treatment of the tar, the tar residue and tar with high water content at the bottom of the tar storage tank 11 can be timely and effectively treated, and the quality of the tar at the bottom of the tar storage tank 11 can be continuously improved, and continuous and stable export can be achieved, ensuring that the storage capacity of the tar storage tank 11 is not attenuated. In the process of circulating the tar in the tar storage tank 11, it can enter the tar centrifuge 5 for production at the same time as the newly produced tar, so that the tar circulation treatment and the normal production of tar can be carried out simultaneously.

[0021] Furthermore, a tar intermediate pump 3 is provided on the oil pipeline 22 between the tar-ammonia separation tank 1 and the tar centrifuge 5, a tar-ammonia separation tank outlet valve 2 is provided at the outlet of the tar-ammonia separation tank 1, a tar intermediate pump outlet valve 4 is provided at the outlet of the tar intermediate pump 3, a tar centrifuge outlet valve 6 is provided at the outlet of the tar centrifuge 5, a tar pump 9 is provided on the oil pipeline 22 between the tar intermediate tank 7 and the tar storage tank 11, and a tar intermediate pump 10 is provided on the oil pipeline 22 between the tar intermediate tank 7 and the tar storage tank 11. A tar intermediate tank outlet valve 8 is provided at the outlet of the tank 7, a tar pump outlet valve 10 is provided at the outlet of the tar pump 9, a tar export pump 13 is provided on the oil pipeline 22 between the tar storage tank 11 and the tar loading platform 16, a tar storage tank outlet valve 12 is provided at the outlet of the tar storage tank 11, a tar export pump outlet valve 14 is provided at the outlet of the tar export pump 13, and a tar loading platform inlet valve 15 is provided at the inlet of the tar loading platform 16.

[0022] Furthermore, the tar residue basin 20 and the ammonia water tank 21 are also included, and the tar residue basin 20 and the circulating ammonia water tank 21 are both connected to the tar centrifuge 5. The tar centrifuge 5 is used to separate the water and tar residue in the tar, the separated water enters the ammonia water tank 21, and the separated tar residue enters the tar residue basin 20.

[0023] Furthermore, one end of the oil return pipeline 23 is connected to the oil delivery pipeline 22 between the tar export pump 13 and the tar export pump outlet valve 14, and a first valve 17 is provided on the oil return pipeline 23. By closing the tar export pump outlet valve 14, opening the first valve 17, and starting the tar export pump 13, the tar inside the tar storage tank 11 is returned to the tar ammonia separation tank 1 for reprocessing.

[0024] Furthermore, it also includes an oil return branch pipe 24, a second valve 18 is provided on the oil return pipeline 23 between the first valve 17 and the tar-ammonia separation tank 1, one end of the oil return branch pipe 24 is connected to the oil return pipeline 23 between the first valve 17 and the second valve 18, and the other end of the oil return branch pipe 24 is connected to the oil delivery pipeline 22 between the tar intermediate pump 3 and the tar centrifuge 5. A third valve 19 is provided on the oil return branch pipe 24. In the gap where the newly produced tar does not enter the tar centrifuge 5, the tar in the tar storage tank 11 can be circulated separately, the second valve 18 is closed, the third valve 19 is opened, and the tar in the tar storage tank 11 can be returned to the tar centrifuge 5 separately through the tar export pump 13.

[0025] Furthermore, after being processed by the tar circulation treatment system, the moisture content of the tar in the tar storage tank 11 is ≤4%, and the ash content is ≤0.13%.

[0026] During the tar centrifugal production process, the production system between the tar ammonia water separation tank 1 and the tar storage tank 11 is opened to realize normal tar production. The outlet valve 14 of the tar export pump is closed, and the outlet valve 12 of the tar storage tank is opened. Under the condition of ensuring stable production, the first valve 17 and the second valve 18 are opened, and the third valve 19 is closed. The tar export pump 13 is started to realize that the tar with high water content and tar residue at the bottom of the tar storage tank 11 is circulated with the newly produced tar. After the tar is centrifuged by the tar centrifuge 5, the water is transported to the ammonia water tank 21 and the tar residue is transported to the tar residue basin 20.

[0027] During the interval of tar production, the outlet valve 2 of the tar-ammonia separation tank, the outlet valve 4 of the tar intermediate pump, the outlet valve 14 of the tar export pump and the second valve 18 are closed, the first valve 17, the third valve 19 and the outlet valve 12 of the tar storage tank are opened, and the production system between the tar centrifuge 5 and the tar storage tank 11 is started to realize the circulation treatment of the tar with high water content and high tar residue content at the bottom of the tar storage tank 11.

[0028] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0029] A tar circulation treatment system, which can circulate the tar in the tar storage tank 11, and continuously separate the tar at the bottom of the tar storage tank 11 with the newly produced tar by using a tar centrifuge 5 to three phases, so as to ensure that the tar in the tar storage tank 11 meets the quality standards. The tar standing at the bottom of the tar storage tank 11 is circulated, and the tar residue and precipitated water at the bottom of the tar storage tank 11 are continuously and stably cleaned out, so as to prevent the accumulation of tar residue and the residue of water in the storage tank, and keep the effective use volume of the storage tank from decaying.

[0030] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tar recycling treatment system, characterized in that: It includes tar-ammonia separation tank, tar centrifuge, tar intermediate tank, tar storage tank, tar loading platform and oil return pipeline, among which: The oil pipeline connects the tar-ammonia separation tank, the tar centrifuge, the tar intermediate tank, the tar storage tank and the tar loading platform in sequence. One end of the oil return pipeline is communicated with the oil delivery pipeline between the tar storage tank and the tar loading platform, and the other end of the oil return pipeline is communicated with the tar-ammonia separation tank.

2. The tar recycling treatment system according to claim 1, characterized in that: The oil pipeline between the tar-ammonia separation tank and the tar centrifuge is provided with a tar intermediate pump, the outlet of the tar-ammonia separation tank is provided with a tar-ammonia separation tank outlet valve, and the outlet of the tar intermediate pump is provided with a tar intermediate pump outlet valve. The outlet of the tar centrifuge is provided with a tar centrifuge outlet valve. A tar pump is provided on the oil pipeline between the tar intermediate tank and the tar storage tank, a tar intermediate tank outlet valve is provided at the outlet of the tar intermediate tank, and a tar pump outlet valve is provided at the outlet of the tar pump. A tar export pump is arranged on the oil pipeline between the tar storage tank and the tar loading platform, a tar storage tank outlet valve is arranged at the outlet of the tar storage tank, a tar export pump outlet valve is arranged at the outlet of the tar export pump, and a tar loading platform inlet valve is arranged at the inlet of the tar loading platform.

3. The tar recycling treatment system according to claim 1, characterized in that: It also includes a tar residue basin and an ammonia water tank, and both the tar residue basin and the ammonia water tank are connected to the tar centrifuge.

4. The tar recycling treatment system according to claim 2, characterized in that: One end of the oil return pipeline is connected to the oil delivery pipeline between the tar export pump and the outlet valve of the tar export pump. The oil return pipeline is provided with a first valve.

5. The tar recycling treatment system according to claim 4, characterized in that: It also includes an oil return branch pipe, a second valve is provided on the oil return pipe between the first valve and the tar-ammonia separation tank, one end of the oil return branch pipe is connected to the oil return pipe between the first valve and the second valve, The other end of the oil return branch pipe is communicated with the oil delivery pipeline between the tar intermediate pump and the tar centrifuge.

6. The tar recycling treatment system according to claim 5, characterized in that: The oil return branch pipe is provided with a third valve.

7. The tar recycling treatment system according to claim 1, characterized in that: After being processed by the tar circulation treatment system, the moisture content of the tar in the tar storage tank is ≤4%, and the ash content is ≤0.13%.

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