Collecting device for tar residues in ammonia still and reboiler

Abstract

The utility model relates to a collecting device for tar residues in an ammonia still and a reboiler, and belongs to the technical field of tar residue treatment. The internal space of a box body is divided into a tar residue settling area and an ammonia distillation wastewater area by a partition plate; the first to fourth tar residue inlets are connected to the front side wall of the box body side by side at intervals; the first slag removing opening and the second slag removing opening are formed in the top wall of the box body and located in the tar slag settling area; the drain outlet is connected to the right side wall of the box body and is positioned in the ammonia distillation wastewater area; the VOCs outlet and the vent nozzle are connected to the top wall of the box body and are positioned in the ammonia distillation wastewater area; the first to fourth liquid outlets are connected to the left side wall of the box body; the first tar residue inlet and the fourth tar residue inlet are connected to a residue discharge port of the reboiler, the second tar residue inlet and the third tar residue inlet are connected to a residue discharge pipe of the ammonia still, and the VOCs outlet is connected to a VOCs treatment system. According to the utility model, tar residues and ammonia distillation wastewater can be simply and conveniently separated and respectively treated, and the problems of peculiar smell, non-environmental protection and environmental pollution in an ammonia distillation section are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tar residue treatment, in particular to a device for collecting tar residue in an ammonia still and a reboiler. Background Art

[0002] During the high-temperature dry distillation process, coal undergoes continuous cracking and polymerization reactions, producing a large amount of coal gas mixed with water, ammonia, coal tar and other products. Ammonia is dissolved in water to form ammonia water. Most of the ammonia water is circulated to the coke oven to cool the coal gas, which is called circulating ammonia water. The remaining ammonia water needs to be treated by an ammonia evaporation tower. After sedimentation, flotation and filtration in the ammonia evaporation tower, the remaining ammonia water still contains a large amount of tar, tar residue and other organic matter. After being treated in the ammonia evaporation tower, ammonia is generated into ammonia gas due to the presence of sodium hydroxide and is sent to the ammonium sulfate unit. The remaining liquid is further steamed and concentrated by the reboiler. The ammonia evaporation wastewater is sent to biochemical treatment, and the tar residue deposited at the bottom of the ammonia evaporation tower and the bottom of the reboiler is discharged to the tar pit with the ammonia evaporation wastewater.

[0003] Since tar residue is a viscous and easily sticky waste residue, the main components are coke powder, coal dust, coal tar, asphalt, and contains volatile and toxic substances such as benzene and phenol, it is difficult to separate ammonia evaporation wastewater and tar residue. In addition, the ammonia evaporation tower and reboiler will discharge ammonia evaporation wastewater when discharging tar residue. Exposing tar residue to the air will produce odor and cause serious pollution to the environment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a device for collecting tar residue in an ammonia distillation tower and a reboiler. The technical solution of the utility model is as follows:

[0005] A device for collecting tar residue in an ammonia distillation tower and a reboiler, comprising a box, a partition, a first tar residue inlet, a second tar residue inlet, a third tar residue inlet, a fourth tar residue inlet, a first flushing port, a second flushing port, a third flushing port, a fourth flushing port, a VOs outlet, a first slag cleaning port, a second slag cleaning port, a stainless steel plug plate, a sewage outlet, a first liquid discharge port, a second liquid discharge port, a third liquid discharge port, a fourth liquid discharge port and a venting port;

[0006] The box body is a closed structure, the partition is fixed inside the box body and the partition divides the internal space of the box body into a tar residue precipitation area at the front and an ammonia wastewater area at the rear, and the height of the partition is lower than the height of the inside of the box body; the first tar residue inlet, the second tar residue inlet, the third tar residue inlet, and the fourth tar residue inlet are connected side by side and spaced apart on the front side wall of the box body; the first flushing port, the second flushing port, the third flushing port, and the fourth flushing port are connected side by side and spaced apart on the top wall of the box body and are located in the tar residue precipitation area; the first slag cleaning port and the second slag cleaning port are opened on the top wall of the box body and are located In the tar residue precipitation area, the first slag cleaning port and the second slag cleaning port are slidably connected with a stainless steel plug plate; the sewage outlet is connected to the right side wall of the box body and is located in the ammonia evaporation wastewater area; the VOCs outlet and the vent are connected to the top wall of the box body and are located in the ammonia evaporation wastewater area; the first drain port, the second drain port, the third drain port, and the fourth drain port are connected to the left side wall of the box body, the first drain port and the second drain port are located in the tar residue precipitation area, the third drain port and the fourth drain port are located in the ammonia evaporation wastewater area, the first drain port is located above the second drain port, and the third drain port is located above the fourth drain port;

[0007] The first tar residue inlet and the fourth tar residue inlet are connected to the slag discharge port of the reboiler, the second tar residue inlet and the third tar residue inlet are connected to the slag discharge pipe of the ammonia distillation tower, the first flushing port, the second flushing port, the third flushing port and the fourth flushing port are all connected to the steam pipe, the VOCs outlet is connected to the VOCs treatment system, and the sewage outlet is connected to the ammonia distillation wastewater tank of the ammonia distillation section.

[0008] Optionally, the first drain port is connected to the third drain port via a first stainless steel pipe, the second drain port is connected to the fourth drain port via a second stainless steel pipe, and manual valves are installed on both the first stainless steel pipe and the second stainless steel pipe.

[0009] Optionally, angle steels are connected to the boxes on both sides of the first slag cleaning port and the second slag cleaning port, the stainless steel insert plate is slidably connected to the angle steels on both sides thereof, and a sealing strip is connected in the gap between the stainless steel insert plate and the box body.

[0010] Optionally, the device for collecting tar residue in the ammonia distillation tower and the reboiler further comprises a manhole, which is connected to the right side wall of the box body and is located in the tar residue precipitation area.

[0011] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations.

[0012] By means of the above scheme, the beneficial effects of the utility model are as follows:

[0013] By setting partitions to divide the internal space of the box into a tar residue sedimentation area and an ammonia evaporation wastewater area, the tar residue and the ammonia evaporation wastewater can be easily separated and treated separately, solving the problem of the difficulty in separating tar residue and ammonia evaporation wastewater, and effectively improving the work efficiency of separating tar residue and ammonia evaporation wastewater; by setting a VOCs outlet to connect to the VOCs treatment system, the volatile substances in the tar residue can be treated by the VOCs treatment system, solving the problems of odor, environmental pollution and environmental pollution in the ammonia evaporation section.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 It is a top view of the utility model.

[0017] Figure 3 It is a left view of the utility model.

[0018] Figure 4 It is a right view of the utility model.

[0019] Figure 5 It is a schematic diagram of the connection relationship between the stainless steel insert plate, the angle steel and the sealing strip in the utility model.

[0020] In the figure: 1-box; 2-partition; 3-stainless steel plug plate; 4-angle steel; 5-sealing strip; 101-tar residue precipitation area; 102-ammonia evaporation wastewater area; A11-first tar residue inlet; A21-second tar residue inlet; A31-third tar residue inlet; A41-fourth tar residue inlet; A12-first flushing port; A22-second flushing port; A32-third flushing port; A42-fourth flushing port; A5-VOCs outlet; B1-first slag cleaning port; B2-second slag cleaning port; B4-first drain port; B5-second drain port; B6-third drain port; B7-fourth drain port; C1-vent; M1-manhole. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figures 1 to 4As shown, the device for collecting tar residue in an ammonia distillation tower and a reboiler provided by the utility model comprises a box body 1, a partition plate 2, a first tar residue inlet A1.1, a second tar residue inlet A2.1, a third tar residue inlet A3.1, a fourth tar residue inlet A4.1, a first flushing port A1.2, a second flushing port A2.2, a third flushing port A3.2, a fourth flushing port A4.2, a VOCs outlet A5, a first slag cleaning port B1, a second slag cleaning port B2, a stainless steel plug plate 3, a sewage outlet B3, a first liquid discharge port B4, a second liquid discharge port B5, a third liquid discharge port B6, a fourth liquid discharge port B7 and a venting port C1;

[0023] The box body 1 is a closed structure, the partition 2 is fixed inside the box body 1 and the partition 2 divides the internal space of the box body 1 into a tar residue precipitation area 101 located in the front and an ammonia wastewater area 102 located in the rear, and the height of the partition 2 is lower than the height of the inside of the box body 1; the first tar residue inlet A1.1, the second tar residue inlet A2.1, the third tar residue inlet A3.1, and the fourth tar residue inlet A4.1 are connected side by side and at intervals on the front side wall of the box body 1; the first flushing port A1.2, the second flushing port A2.2, the third flushing port A3.2, and the fourth flushing port A4.2 are connected side by side and at intervals on the top wall of the box body 1 and are located in the tar residue precipitation area 101; the first slag cleaning port B1 and the second slag cleaning port B2 are opened on the top wall of the box body 1 and are located In the tar residue precipitation area 101, the first slag cleaning port B1 and the second slag cleaning port B2 are slidably connected with a stainless steel plug plate 3; the sewage outlet B3 is connected to the right side wall of the box body 1 and is located in the ammonia evaporation wastewater area 102; the VOCs outlet A5 and the vent C1 are connected to the top wall of the box body 1 and are located in the ammonia evaporation wastewater area 102; the first drain port B4, the second drain port B5, the third drain port B6, and the fourth drain port B7 are connected to the left side wall of the box body 1, the first drain port B4 and the second drain port B5 are located in the tar residue precipitation area 101, the third drain port B6 and the fourth drain port B7 are located in the ammonia evaporation wastewater area 102, the first drain port B4 is located above the second drain port B5, and the third drain port B6 is located above the fourth drain port B7;

[0024] The first tar residue inlet A1.1 and the fourth tar residue inlet A4.1 are connected to the slag discharge port of the reboiler, the second tar residue inlet A2.1 and the third tar residue inlet A3.1 are connected to the slag discharge pipe of the ammonia evaporation tower, the first flushing port A1.2, the second flushing port A2.2, the third flushing port A3.2 and the fourth flushing port A4.2 are all connected to the steam pipe, the VOCs outlet A5 is connected to the VOCs treatment system, and the sewage outlet B3 is connected to the ammonia evaporation wastewater tank of the ammonia evaporation section.

[0025] When the utility model is in use, the tar residue accompanied by ammonia evaporation wastewater discharged from the ammonia evaporation tower enters the tar residue precipitation zone 101 through the second tar residue inlet A2.1 and the third tar residue inlet A3.1, and the tar residue accompanied by ammonia evaporation wastewater discharged from the reboiler enters the tar residue precipitation zone 101 through the first tar residue inlet A1.1 and the fourth tar residue inlet A4.1, and the tar residue accompanied by ammonia evaporation wastewater settles in the tar residue precipitation zone 101, and the upper ammonia evaporation wastewater overflows to the ammonia evaporation wastewater zone 102 through the gap between the partition plate 2 and the top wall of the box body 1, and the deposited tar residue and ammonia evaporation wastewater are separated, and the ammonia evaporation wastewater is discharged into the ammonia evaporation wastewater tank through the sewage outlet B3, and the tar residue is regularly cleaned from the first slag cleaning port B1 and the second slag cleaning port B2. The overall design of the utility model is safe and environmentally friendly, and easy to operate.

[0026] The first flushing port A1.2, the second flushing port A2.2, the third flushing port A3.2, and the fourth flushing port A4.2 are connected to the steam pipe to avoid pipe blockage when the ammonia evaporation tower and the reboiler discharge a lot of tar residue. By setting the VOCs outlet A5 to connect to the VOCs treatment system, the volatile waste gas in the tar residue and the volatile ammonia in the ammonia evaporation wastewater can be treated by the VOCs treatment system, solving the problem of waste gas and odor polluting the environment. By setting the venting port C1, it is convenient to vent as needed.

[0027] In another embodiment, the first drain port B4 is connected to the third drain port B6 through a first stainless steel pipe, the second drain port B5 is connected to the fourth drain port B7 through a second stainless steel pipe, and manual valves are installed on the first stainless steel pipe and the second stainless steel pipe.

[0028] Specifically, when there is less tar residue in the tar residue precipitation area 101, the manual valve on the second stainless steel pipe can be opened, and the tar residue precipitation area 101 is connected with the ammonia evaporation wastewater area 102 through the second stainless steel pipe, the second drain port B5 and the fourth drain port B7, so that the ammonia evaporation wastewater on the upper part of the tar residue precipitation area 101 flows into the ammonia evaporation wastewater area 102; similarly, when there is more tar residue in the tar residue precipitation area 101, the manual valve on the first stainless steel pipe can be opened, and the tar residue precipitation area 101 is connected with the ammonia evaporation wastewater area 102 through the first drain port B4, the third drain port B6 and the first stainless steel pipe, and the manual valve on the second stainless steel pipe can be closed, so that the ammonia evaporation wastewater on the upper part of the tar residue precipitation area 101 flows into the ammonia evaporation wastewater area 102.

[0029] In another embodiment, Figure 5 As shown, angle steels 4 are connected to the box body 1 on both sides of the first slag cleaning port B1 and the second slag cleaning port B2, the stainless steel plug plate 3 is slidably connected to the angle steels 4 on both sides thereof, and a sealing strip 5 is connected to the gap between the stainless steel plug plate 3 and the box body 1. This arrangement allows the stainless steel plug plate 3 to be pulled out when cleaning the tar slag, so as to facilitate cleaning of the tar slag in the box body 1.

[0030] In another embodiment, the device for collecting tar slag in the ammonia distillation tower and the reboiler further includes a manhole M1, which is connected to the right side wall of the housing 1 and is located in the tar slag precipitation area 101. By providing the manhole M1, the stainless steel plug plate 3 can be opened manually and regularly to process the deposited tar slag, and the tar slag that is difficult to process can be cleaned at the manhole M1.

[0031] In another embodiment, a blind plate is connected to the top of the vent C1 to facilitate venting as needed.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A device for collecting tar residue in an ammonia still and a reboiler, characterized in that: It comprises a box body (1), a partition (2), a first tar residue inlet (A1.1), a second tar residue inlet (A2.1), a third tar residue inlet (A3.1), a fourth tar residue inlet (A4.1), a first flushing port (A1.2), a second flushing port (A2.2), a third flushing port (A3.2), a fourth flushing port (A4.2), a VOCs outlet (A5), a first slag cleaning port (B1), a second slag cleaning port (B2), a stainless steel plug plate (3), a sewage outlet (B3), a first liquid discharge port (B4), a second liquid discharge port (B5), a third liquid discharge port (B6), a fourth liquid discharge port (B7) and a venting port (C1); The box (1) is a closed structure, the partition (2) is fixed inside the box (1) and the partition (2) divides the internal space of the box (1) into a tar residue precipitation area (101) located at the front and an ammonia wastewater area (102) located at the rear, and the height of the partition (2) is lower than the height of the inside of the box (1); the first tar residue inlet (A1.1), the second tar residue inlet (A2.1), the third tar residue inlet (A3.1), and the fourth tar residue inlet (A4.1) are connected side by side and at intervals on the front side wall of the box (1); the first flushing port (A1.2), the second flushing port (A2.2), the third flushing port (A3.2), and the fourth flushing port (A4.2) are connected side by side and at intervals on the top wall of the box (1) and are located in the tar residue precipitation area (101); the first slag cleaning port (B1) and the second slag cleaning port (B2) are opened on the box (1) and are located in the tar residue precipitation area (101); The sedimentation area (101), the first slag cleaning port (B1) and the second slag cleaning port (B2) are slidably connected with a stainless steel plug plate (3); the sewage outlet (B3) is connected to the right side wall of the box body (1) and is located in the ammonia evaporation wastewater area (102); the VOCs outlet (A5) and the venting port (C1) are connected to the top wall of the box body (1) and are located in the ammonia evaporation wastewater area (102); the first liquid discharge port (B4), the second liquid discharge port (B5), the third liquid discharge port (B6), and the fourth liquid discharge port (B7) are connected to the left side wall of the box body (1); the first liquid discharge port (B4) and the second liquid discharge port (B5) are located in the tar residue sedimentation area (101); the third liquid discharge port (B6) and the fourth liquid discharge port (B7) are located in the ammonia evaporation wastewater area (102); the first liquid discharge port (B4) is located above the second liquid discharge port (B5), and the third liquid discharge port (B6) is located above the fourth liquid discharge port (B7); The first tar residue inlet (A1.1) and the fourth tar residue inlet (A4.1) are connected to the slag discharge port of the reboiler, the second tar residue inlet (A2.1) and the third tar residue inlet (A3.1) are connected to the slag discharge pipe of the ammonia evaporation tower, the first flushing port (A1.2), the second flushing port (A2.2), the third flushing port (A3.2) and the fourth flushing port (A4.2) are all connected to the steam pipe, the VOCs outlet (A5) is connected to the VOCs treatment system, and the sewage outlet (B3) is connected to the ammonia evaporation wastewater tank of the ammonia evaporation section.

2. The device for collecting tar residue in an ammonia still and a reboiler according to claim 1, characterized in that: The first liquid discharge port (B4) and the third liquid discharge port (B6) are connected via a first stainless steel pipe, and the second liquid discharge port (B5) and the fourth liquid discharge port (B7) are connected via a second stainless steel pipe. Manual valves are installed on both the first stainless steel pipe and the second stainless steel pipe.

3. The device for collecting tar residue in an ammonia still and a reboiler according to claim 1 or 2, characterized in that: Angle steels (4) are connected to the box body (1) on both sides of the first slag cleaning port (B1) and the second slag cleaning port (B2), the stainless steel plug plate (3) is slidably connected to the angle steels (4) on both sides thereof, and a sealing strip (5) is connected to the gap between the stainless steel plug plate (3) and the box body (1).

4. The device for collecting tar residue in an ammonia still and a reboiler according to claim 1 or 2, characterized in that: It also comprises a manhole (M1), which is connected to the right side wall of the box body (1) and is located in the tar residue precipitation area (101).

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