Tar residue closed discharge device

Abstract

This utility model discloses a closed-loop tar residue discharge device, including a pre-separator, a filter tank, and a temporary storage tank. The inlet of the filter tank is connected to the outlet of the pre-separator via a first pipe, and the outlet of the filter tank is connected to the inlet of the temporary storage tank via a second pipe. The filter tank includes a tank body with a top opening and a top cover, with the top cover covering the top of the tank body. A filter screen assembly is also provided inside the filter tank, located between the inlet and outlet of the filter tank. This closed-loop tar residue discharge device can filter out most of the tar residue and remove it from the ammonia water circulation system, thereby effectively ensuring the normal separation of tar and ammonia water.

Description

Technical Field

[0001] This utility model relates to the technical field of coal gas purification, and in particular to a closed tar residue discharge device. Background Technology

[0002] In existing technology, the cooling section of the gas purification operation area adopts a vertical tar-ammonia water separation tank process. Compared with the traditional mechanized ammonia water clarification tank technology, this process adds a tar residue pre-separator and a pressing pump to the circulating ammonia water from the coke oven. The pre-separator is used to perform preliminary gravity separation of the circulating ammonia water. The circulating ammonia water discharged from the pre-separator enters the pressing pump, which settles and breaks down large pieces of tar residue in the ammonia water. The broken fine tar residue is returned to the tar-ammonia water for continued circulation and enters subsequent processes. The circulating ammonia water after passing through the pressing pump enters the storage tank. At this time, the storage tank contains ammonia water, liquid tar, and fine tar residue. A super centrifuge is used to perform three-phase separation, thereby separating the ammonia water and liquid tar. The separated liquid tar is pumped to the tar storage tank through an intermediate tar pump. However, the fine tar residue may clog the intermediate tar pump, thus affecting the normal operation of production. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the existing technology by providing a closed tar residue discharge device. The closed tar residue discharge device can filter out most of the tar residue and remove it from the ammonia water circulation system, thereby effectively ensuring the normal separation of tar and ammonia water.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A closed tar residue discharge device includes a pre-separator, a filter tank, and a temporary storage tank. The tar inlet of the filter tank is connected to the outlet of the pre-separator through a first pipe, and the liquid outlet of the filter tank is connected to the inlet of the temporary storage tank through a second pipe. The filter tank includes a tank body with a top opening and a top cover, with the top cover covering the top of the tank body. A filter screen assembly is also provided inside the filter tank, and the filter screen assembly is located between the tar inlet and the liquid outlet of the filter tank.

[0006] Preferably, the filter tank is further provided with a collection screen, which is a tank structure with an open top, and the top opening of the collection screen is lower than the slag inlet of the filter tank, for collecting the deposited tar slag.

[0007] Preferably, the top cover and the tank body are connected by a grooved water seal.

[0008] Preferably, the top cover and the tank body are detachably connected by quick-release buckles.

[0009] Preferably, the slag inlet of the filter tank is located on the first side wall of the tank body, and the liquid outlet of the filter tank is located on the second side wall of the tank body opposite to the first side wall.

[0010] Preferably, the height of the slag inlet of the filter tank is higher than the height of the liquid outlet of the filter tank.

[0011] Preferably, the filter assembly includes a first filter and a second filter, the first filter and the second filter are arranged parallel to each other at intervals, and the second filter is arranged on the side near the drain port of the filter tank.

[0012] Preferably, the pore size of the first filter screen is in the range of 0.9cm-1.1cm, and the pore size of the second filter screen is in the range of 0.4-0.6cm.

[0013] Preferably, the bottom surface of the filter tank is inclined, and the height of the bottom of the first side wall is higher than the height of the bottom of the second side wall.

[0014] Preferably, both the tank body and the top cover are made of stainless steel.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] (1) In this utility model, the filter tank intercepts large-diameter tar residue and can collect and discharge it through the collection screen, thereby avoiding the participation of large-diameter tar residue in the subsequent tar collection process, avoiding clogging of the intermediate tar pump, and thus reducing the load on the super centrifuge.

[0017] (2) In this utility model, the top cover and the tank body are connected by a groove water seal, which not only ensures the easy disassembly of the top cover and the tank body, but also ensures the sealing between the top cover and the tank body, thus preventing the exhaust gas from escaping into the environment.

[0018] (3) In this utility model, there is no need to use a pressing pump, which saves costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the closed tar residue discharge device in Embodiment 1 of this utility model;

[0020] Figure 2 This is a top view of the tank in Embodiment 1 of this utility model;

[0021] Figure 3 This is a side sectional view of the filter tank in Embodiment 1 of this utility model;

[0022] Figure 4 This is a top view of the top cover in Embodiment 1 of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the first filter screen in Embodiment 1 of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the second filter screen in Embodiment 1 of this utility model;

[0025] Figure 7 This is a side view of the top cover in Embodiment 1 of this utility model.

[0026] In the diagram: 100-Pre-separator, 200-Filter tank, 210-Slag inlet, 220-Drain outlet, 230-Tank body, 240-Top cover, 250-Collection screen, 260-First side wall, 270-Second side wall, 280-First filter screen, 290-Second filter screen, 300-Temporary storage tank, 400-First pipe, 410-Second pipe. Detailed Implementation

[0027] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1

[0032] like Figure 1-7As shown, this embodiment discloses a closed tar residue discharge device, which includes a pre-separator 100, a filter tank 200, and a temporary storage tank 300. The tar inlet 210 of the filter tank 200 is connected to the outlet of the pre-separator 100 through a first pipe 400, and the liquid outlet 220 of the filter tank 200 is connected to the inlet of the temporary storage tank 300 through a second pipe 410. The filter tank 200 includes a tank body 230 with an open top and a top cover 240, which covers the top of the tank body 230 to seal the top opening of the tank body 230. The filter tank 200 is also equipped with a filter screen assembly, which is located between the tar inlet 210 and the liquid outlet 220 of the filter tank 200, and is used to filter out large-diameter tar residue in the mixed liquid to prevent large-diameter tar residue from entering the temporary storage tank 300 and subsequent processes.

[0033] like Figure 3 As shown, the filter tank 200 is also equipped with a collecting screen 250. The collecting screen 250 is a tank structure with an open top, and the top opening of the collecting screen 250 is lower than the slag inlet 210 of the filter tank 200, used to collect the downwardly deposited tar sludge. Specifically, the two sides of the collecting screen 250 are respectively attached to the filter screen assembly and the first side wall 260 located on the side of the slag inlet 210 of the tank body 230, and the bottom of the collecting screen 250 is placed on the bottom wall of the tank body 230. The tar sludge in the mixture entering the filter tank 200 from the slag inlet 210 is blocked in front of the filter screen assembly, and thus deposits downward into the collecting screen 250. By simply opening the top cover 240 and removing the collecting screen 250 from the tank body 230, the tar sludge can be discharged from the ammonia water circulation system.

[0034] like Figure 2 , 3 As shown, the top cover 240 and the tank body 230 are connected by a grooved water seal. The top of the tank body 230 is provided with grooves around its perimeter to hold water. The top cover 240 includes a horizontal cover plate and a vertical insertion part. When the top cover 240 is placed on top of the tank body 230, the insertion parts around the perimeter are inserted into the grooves around the perimeter, thereby achieving a grooved water seal and preventing gas from escaping from the filter tank 200.

[0035] In addition, the top cover 240 and the tank body 230 are detachably connected by quick-release buckles, thereby increasing the tightness of the connection between the top cover 240 and the tank body 230, and enabling quick disassembly and installation of the top cover 240 and the tank body 230, so as to facilitate operations such as removing the collection net cover 250.

[0036] like Figure 3As shown, the slag inlet 210 of the filter tank 200 is located on the first side wall 260 of the tank body 230, and the liquid outlet 220 of the filter tank 200 is located on the second side wall 270 of the tank body 230, opposite to the first side wall 260. That is, the slag inlet 210 and the liquid outlet 220 are arranged opposite to each other, and the flow direction of ammonia water in the filter tank 200 is from the slag inlet 210 to the liquid outlet 220.

[0037] like Figure 3 As shown, the height of the slag inlet 210 of the filter tank 200 is higher than the height of the liquid outlet 220. Specifically, the slag inlet 210 is located at the top of the first side wall 260, and the liquid outlet 220 is located at the bottom of the second side wall 270. This structural design facilitates the flow of ammonia water in the filter tank 200.

[0038] like Figure 2 , 3 As shown, in this embodiment, the filter assembly includes a first filter 280 and a second filter 290. The first filter 280 and the second filter 290 are arranged in parallel with a gap between them. The second filter 290 is located on the side near the drain port 220 of the filter tank 200.

[0039] The first filter screen 280 has a larger pore size than the second filter screen 290, thereby further preventing large-diameter tar residue from entering the temporary storage tank 300. The pore size of the first filter screen 280 ranges from 0.9cm to 1.1cm, and the pore size of the second filter screen 290 ranges from 0.4cm to 0.6cm.

[0040] In this embodiment, the aperture of the first filter screen 280 is set to 1.0 cm, and the aperture of the second filter screen 290 is set to 0.5 cm.

[0041] In addition, the distance between the first filter screen 280 and the second filter screen 290 is set to 150mm, and the distance between the second filter screen 290 and the second sidewall 270 is set to 150mm.

[0042] like Figure 3 As shown, the bottom surface of the filter tank 200 is inclined, and the bottom height of the first sidewall 260 is higher than the bottom height of the second sidewall 270. That is, the inclination direction is from top to bottom, from the bottom of the first sidewall 260 toward the bottom of the second sidewall 270. This structural design facilitates the flow of ammonia water toward the drain port 220, thereby improving the filtration efficiency of ammonia water.

[0043] Preferably, both the tank body 230 and the top cover 240 are made of stainless steel.

[0044] In this embodiment, the filter tank 200 has a length of 1200mm, a width of 1200mm, and a height of 1500mm. The top is equipped with a grooved water seal with a groove depth of 50mm and a width of 50mm.

[0045] The working process of the closed tar residue discharge device in this embodiment is as follows:

[0046] First, a mixture containing ammonia, tar, and tar residue is passed into a pre-separator 100, where the mixture undergoes preliminary gravity separation and the tar residue settles to the bottom.

[0047] The initially separated mixture enters the slag inlet 210 of the filter tank 200 through the first pipe 400 and flows toward the drain outlet 220. Large-diameter tar residue is intercepted by the filter screen assembly and settles into the collection screen 250.

[0048] Liquid ammonia and tar are discharged from the drain outlet 220 and enter the temporary storage tank 300 along the second pipe 410;

[0049] The ammonia and tar stored in the temporary storage tank 300 are then separated through subsequent processes;

[0050] Open the top cover 240 and remove the collection screen 250 to discharge the tar residue deposited inside the collection screen 250.

[0051] In this embodiment, the filter tank 200 intercepts large-diameter tar residue and can collect and discharge it through the collection screen 250, thereby preventing large-diameter tar residue from participating in the subsequent tar collection process, avoiding clogging of the intermediate tar pump, and thus reducing the load on the super centrifuge.

[0052] In addition, the top cover 240 and the tank body 230 are sealed together by a groove water seal, which not only ensures that the top cover 240 and the tank body 230 can be easily disassembled, but also ensures that the top cover 240 and the tank body 230 are sealed, thus preventing exhaust gas from escaping into the environment.

[0053] The elimination of the need for a press pump saves costs and avoids the problem of unmanageable tar residue during press pump maintenance.

[0054] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A closed tar residue discharge device, characterized in that, Includes a pre-separator, filter tank, and temporary storage tank. The slag inlet of the filter tank is connected to the outlet of the pre-separator via a first pipe, and the liquid outlet of the filter tank is connected to the inlet of the temporary storage tank via a second pipe. The filter tank includes a tank body with a top opening and a top cover, the top cover being placed on the top of the tank body. The filter tank also includes a filter screen assembly located between the slag inlet and the liquid outlet of the filter tank.

2. The closed tar residue discharge device according to claim 1, characterized in that, The filter tank is also equipped with a collection screen, which is a tank structure with an open top. The top opening of the collection screen is lower than the slag inlet of the filter tank, and is used to collect the deposited tar slag.

3. The closed tar residue discharge device according to claim 1, characterized in that, The top cover and the tank body are connected by a grooved water seal.

4. The closed tar residue discharge device according to claim 3, characterized in that, The top cover and the tank body are detachably connected by quick-release buckles.

5. The closed tar residue discharge device according to claim 1, characterized in that, The slag inlet of the filter tank is located on the first side wall of the tank body, and the liquid outlet of the filter tank is located on the second side wall of the tank body opposite to the first side wall.

6. The closed tar residue discharge device according to claim 5, characterized in that, The height of the slag inlet of the filter tank is higher than the height of the liquid outlet of the filter tank.

7. The closed tar residue discharge device according to claim 1, characterized in that, The filter assembly includes a first filter and a second filter, which are arranged parallel to each other with a gap between them. The second filter is located on the side near the drain port of the filter tank.

8. The closed tar residue discharge device according to claim 7, characterized in that, The pore size of the first filter screen ranges from 0.9cm to 1.1cm, and the pore size of the second filter screen ranges from 0.4cm to 0.6cm.

9. The closed tar residue discharge device according to claim 5, characterized in that, The bottom surface of the filter tank is inclined, and the height of the bottom of the first side wall is higher than the height of the bottom of the second side wall.

10. The closed tar residue discharge device according to claim 1, characterized in that, Both the tank body and the top cover are made of stainless steel.

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