Horizontal tar-ammonia separating device

Abstract

The utility model relates to a horizontal tar ammonia water separation device, including groove body, flow channel baffle, tar ammonia water inlet pipe, heavy tar outlet pipe, light tar outlet pipe and ammonia water outlet pipe, one end of groove body is equipped with tar ammonia water entrance, the other end of groove body is equipped with light tar outlet, ammonia water outlet and heavy tar outlet, a plurality of flow channel baffles are arranged in groove body along the tar ammonia water flowing direction interval, form the tar ammonia water flow channel of serpentine, the surface of flow channel baffle is sprayed with hydrophobic oleophilic material coating, the horizontal tar ammonia water separation device can guarantee the full separation of light tar, heavy tar and ammonia water, improve separation efficiency, and save the floor area greatly, save investment, solve the problem that the existing tar ammonia water separation device separation effect is poor, tar ammonia water stays long, equipment floor area is big, total investment is high.

Description

Technical Field

[0001] This utility model relates to the field of tar-ammonia-water separation technology, and in particular to a horizontal tar-ammonia-water separation device. Background Technology

[0002] Low-rank coal undergoes low-temperature dry distillation, which decomposes it upon heating to produce semi-coke, low-temperature coal tar, and raw coal gas. The substances contained in low-temperature coal tar are generally small molecules (such as aliphatic hydrocarbons and diphenols), with low aromatic hydrocarbon content and high alkane content; its relative density is typically around 1.0 g / cm³. 3 The low temperature coal tar contains some water-soluble alcohols and phenols, which makes the separation of tar and ammonia water quite difficult.

[0003] The tar-ammonia water separator is one of the key pieces of equipment in the coal gas purification system that is used in conjunction with the coal dry distillation process. Its main function is to separate the tar-ammonia water mixture, recover the tar product, and recycle the ammonia water.

[0004] Existing tar-ammonia water separation devices are usually vertical circular separation tanks or horizontal boat-shaped separation tanks. The main problems are: poor separation effect, long tar-ammonia water retention time, large equipment footprint, high total investment, and the need for regular manual cleaning, which results in a harsh working environment and environmental pollution during the cleaning process. Summary of the Invention

[0005] This invention provides a horizontal tar-ammonia water separation device that can ensure the full separation of light tar, heavy tar and ammonia water, improve separation efficiency, and significantly save floor space and investment. It solves the problems of poor separation effect, long residence time of tar and ammonia water, large equipment floor space and high total investment of existing tar-ammonia water separation devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A horizontal tar-ammonia water separation device includes a tank, flow channel baffles, a tar-ammonia water inlet pipe, a heavy tar outlet pipe, a light tar outlet pipe, and an ammonia water outlet pipe. One end of the tank is connected to the tar-ammonia water inlet pipe. The other end of the tank is connected to the light tar outlet, the ammonia water outlet, and the heavy tar outlet. The ammonia water outlet is connected to the ammonia water outlet pipe, and the heavy tar outlet is connected to the heavy tar outlet pipe. An electric slag discharge valve is installed on the heavy tar outlet pipe, and a light tar outlet pipe is installed at the light tar outlet. Multiple flow channel baffles are spaced apart along the tar-ammonia water flow direction within the tank, forming a serpentine tar-ammonia water flow channel. The surface of the flow channel baffles is coated with a hydrophobic and oleophilic material.

[0008] The tar-ammonia water inlet is located in the middle of the tank at the corresponding end; the light tar outlet is located at the upper part of the tank at the corresponding end, and the light tar outlet pipe is L-shaped, with the top of the vertical section connected to the light tar collection funnel, and the horizontal section extending out of the tank from the light tar outlet; the ammonia water outlet is located in the middle of the tank at the corresponding end; and the heavy tar outlet is located at the lower part of the tank at the corresponding end.

[0009] The bottom plate of the tank is inclined, with the end near the tar ammonia inlet higher than the end near the heavy tar outlet; the angle between the bottom plate and the horizontal plane is 1° to 10°.

[0010] The angle between the base plate and the horizontal plane is 3° to 5°.

[0011] The number of flow channel baffles is 20 to 40, with a spacing of 0.5 to 1.5 m.

[0012] The flow channel baffle consists of two baffles, one and two, spaced apart. Two baffles are symmetrically arranged on both sides of the width of the tank, and the outer sides of the baffles are connected to the corresponding side walls of the tank. One baffle is located in the middle of the width of the tank and is connected to the inner wall of the tank via a support rod. Gaps are left between the top of the baffles and the top plate of the tank, and between the bottom of the baffles and the bottom plate of the tank. The baffles are staggered vertically.

[0013] The surface of the flow channel baffle is coated with a hydrophobic and oleophilic material.

[0014] The hydrophobic and oleophilic coating is a polytetrafluoroethylene coating or a carbon fiber composite material coating.

[0015] The horizontal cross-section of the trough is a rectangle with rounded ends.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1) By setting multiple flow channel baffles in the tar-ammonia water separation tank, the flow is deflected and the hydrophobic and oleophilic coating on its surface works together to achieve full and rapid separation of light tar, heavy tar and ammonia water;

[0018] 2) The bottom plate of the tar-ammonia water separation tank is inclined, which helps heavy tar and tar residue to accumulate at a low place and be discharged all at once on a regular basis. Heavy tar and tar residue will not be deposited on the flow channel baffle, and no manual cleaning is required, which is economical and environmentally friendly.

[0019] 3) The surface of the flow channel baffle is coated with a hydrophobic and oleophilic material, which can promote the coalescence of small oil droplets, shorten the separation time, and improve the separation efficiency;

[0020] 4) The tar-ammonia-water mixture flows towards the outlet along a serpentine flow path formed by multiple flow channel baffles within the tank, enhancing fluidity and increasing flow distance. This significantly reduces equipment footprint and investment while ensuring separation efficiency, effectively solving the problem of difficult separation of tar and ammonia. Attached Figure Description

[0021] Figure 1 This is a front cross-sectional view of the horizontal tar-ammonia-water separation device described in this utility model.

[0022] Figure 2 This is a top sectional view of the horizontal tar-ammonia-water separation device described in this utility model.

[0023] In the diagram: 1-tank; 2-tar ammonia inlet pipe; 3-light tar collection funnel; 4-flow channel baffle; 5-bottom plate; 6-ammonia outlet pipe; 7-heavy tar outlet pipe; 8-light tar outlet pipe. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0025] like Figure 1 , Figure 2 As shown, the horizontal tar-ammonia water separation device of this utility model includes a tank body 1, flow channel baffles 4, tar-ammonia water inlet pipe 2, heavy tar outlet pipe 7, light tar outlet pipe 8, and ammonia water outlet pipe 6. One end of the tank body 1 is provided with a tar-ammonia water inlet connected to the tar-ammonia water inlet pipe 2. The other end of the tank body 1 is provided with a light tar outlet, an ammonia water outlet, and a heavy tar outlet. The ammonia water outlet is connected to the ammonia water outlet pipe 6, and the heavy tar outlet is connected to the heavy tar outlet pipe 7. An electric slag discharge valve is provided on the heavy tar outlet pipe 7, and a light tar outlet pipe 8 is provided at the light tar outlet. Multiple flow channel baffles 4 are arranged at intervals along the flow direction of tar-ammonia water in the tank body 1 to form a serpentine tar-ammonia water flow channel. The surface of the flow channel baffles 4 is coated with a hydrophobic and oleophilic material.

[0026] The tar-ammonia water inlet is located in the middle of the corresponding end of the tank 1; the light tar outlet is located in the upper part of the corresponding end of the tank 1, and the light tar outlet pipe 8 is L-shaped, with the top of the vertical section connected to the light tar collection funnel 3, and the horizontal section extending out of the tank 1 from the light tar outlet; the ammonia water outlet is located in the middle of the corresponding end of the tank 1; and the heavy tar outlet is located in the lower part of the corresponding end of the tank 1.

[0027] The bottom plate 5 of the tank 1 is inclined, and the end near the tar ammonia inlet is higher than the end near the heavy tar outlet; the angle between the bottom plate 5 and the horizontal plane is 1° to 10°.

[0028] The angle between the base plate 5 and the horizontal plane is 3° to 5°.

[0029] The number of flow channel baffles 4 is 20 to 40, with a spacing of 0.5 to 1.5 m.

[0030] The flow channel baffle 4 consists of baffle one and baffle two arranged at intervals; baffle one consists of two symmetrically arranged on both sides of the width direction of the tank 1, and the outer side of baffle one is connected to the corresponding side wall of the tank 1 respectively; baffle two consists of one located in the middle of the width direction of the tank 1, and baffle two is connected to the inner wall of the tank 1 through a support rod (not shown in the figure); gaps are left between the top of baffle one and baffle two and the top plate of the tank 1, and between the bottom of baffle one and baffle two and the bottom plate 5 of the tank 1 respectively, and baffle one and baffle two are arranged alternately vertically.

[0031] The surface of the flow channel baffle 4 is coated with a hydrophobic and oleophilic material.

[0032] The hydrophobic and oleophilic coating is a polytetrafluoroethylene coating or a carbon fiber composite material coating.

[0033] The horizontal cross-section of the trough 1 is a rectangle with rounded ends.

[0034] The working method of the horizontal tar-ammonia-water separation device described in this utility model is as follows:

[0035] 1) The electric slag discharge valve on the heavy tar outlet pipe 7 is closed; the tar-ammonia water mixture continuously enters the tank 1 through the tar-ammonia water inlet pipe 2, and flows to one end of the heavy tar outlet pipe 7 through the S-shaped flow channel formed by the baffles 4 of each flow channel.

[0036] 2) When the tar-ammonia-water mixture flows through each flow channel baffle 4, the tar droplets continuously gather and increase in size under the action of the hydrophobic and oleophilic material coating on the surface of the flow channel baffle 4.

[0037] 3) The heavy tar settles downward and flows and collects through the inclined bottom plate 5 towards the heavy tar outlet pipe 7, and is discharged periodically by the electric slag discharge valve.

[0038] 4) The light tar floats upward, is collected through the light tar collection funnel 3, and is discharged through the light tar outlet pipe 8.

[0039] 5) The ammonia water outlet pipe 6 is normally open, and the ammonia water after tar separation is continuously discharged from the ammonia water outlet pipe 6.

[0040] In the horizontal tar-ammonia-water separation device of this utility model, multiple flow channel baffles (preferably 20-40 channels, spaced 0.5-1.5m apart) are arranged along the length of the tank 1. The upper and lower sections of two adjacent flow channel baffles are ( Figure 1 (as shown) and before and after ( Figure 2 As shown, the flow channels are staggered, with space between the top of each flow channel baffle and the top plate of the tank 1, and between the bottom of each flow channel baffle and the bottom plate of the tank 1, forming a serpentine flow channel.

[0041] The hydrophobic and oleophilic material coating (preferably polytetrafluoroethylene coating or carbon fiber composite coating) sprayed onto the surface of the flow channel baffle has a contact angle of >150° between the tar-ammonia mixture and the hydrophobic and oleophilic material coating, which increases the adhesion of tar by 30% to 50% and effectively promotes the aggregation of small oil droplets.

[0042] The oil level is controlled by a light tar collection funnel, maintaining it at a high oil level H and a low oil level L (e.g., ...). Figure 1 (as shown) It is fixed above the oil-water phase interface when production is stable.

[0043] The tank is a rectangular tank with rounded ends, preferably 15-25m in length, 3-5m in width, and 4-8m in height.

[0044] The bottom plate of the tank is inclined from the tar ammonia water inlet pipe (high end) to the heavy tar outlet pipe (low end), with an inclination angle of 1° to 10° (preferably 3° to 5°). The inclined bottom plate facilitates the flow and accumulation of the separated heavy tar and tar residue towards the heavy tar outlet pipe. Once a certain liquid level is reached, the electric slag discharge valve can be activated to discharge the heavy tar and tar residue. There is no need for manual cleaning of the slag in the tank, which is economical and environmentally friendly, reducing environmental pollution.

[0045] To more intuitively illustrate this utility model, the implementation methods of this utility model will be further described in conjunction with the embodiments. The following embodiments are merely preferred specific implementations of this utility model, but the protection scope of this utility model is not limited thereto. Any technical solutions that can be obviously obtained by those skilled in the art within the technical scope disclosed in this utility model, including simple variations or equivalent substitutions, are all within the protection scope of this utility model.

[0046]

Example 1

[0047] In this embodiment, the horizontal tar-ammonia water separation device includes a tank 1 and a tar-ammonia water inlet pipe 2, a heavy tar outlet pipe 7, a light tar outlet pipe 8, and an ammonia water outlet pipe 6 connected to the tank 1; the tank 1 is provided with multiple flow channel baffles 4.

[0048] The tank 1 is 15m long, 4m wide, and 5m high. Twenty flow channel baffles are installed along the length of the tank 1, with a spacing of 1m between the flow channel baffles. Adjacent flow channel baffles are arranged alternately, forming a serpentine flow channel.

[0049] In this embodiment, a 50μm thick PTFE (polytetrafluoroethylene) material is sprayed onto the surface of the flow channel baffle, and then cured at high temperature to form a hydrophobic and oleophilic coating.

[0050] The tar-ammonia inlet pipe 2 is located in the middle of the left end (as shown in the diagram) of the tank body 1. The light tar collection funnel 3 is located at the top of the right end (as shown in the diagram) of the tank body 1 and is connected to the light tar outlet pipe. The ammonia outlet pipe 6 is located in the middle of the right end (as shown in the diagram) of the tank body 1. The heavy tar outlet pipe is located at the bottom of the right end (as shown in the diagram) of the tank body 1.

[0051] The bottom plate 5 of the tank is inclined, with an angle of 3° between it and the horizontal plane.

[0052]

Example 2

[0053] In this embodiment, the horizontal tar-ammonia water separation device is used to separate high-viscosity tar and ammonia water. The structure of the horizontal tar-ammonia water separation device is basically the same as that in Embodiment 1. The difference is that the inclination angle of the bottom plate 5 of the tank 1 is 5° and the number of flow channel baffles is 40 to further improve the separation efficiency.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A horizontal tar-ammonia water separation device, characterized in that, The system includes a tank, flow channel baffles, a tar-ammonia water inlet pipe, a heavy tar outlet pipe, a light tar outlet pipe, and an ammonia water outlet pipe. One end of the tank is connected to the tar-ammonia water inlet pipe. The other end of the tank is connected to the light tar outlet, the ammonia water outlet, and the heavy tar outlet. The ammonia water outlet is connected to the ammonia water outlet pipe, and the heavy tar outlet is connected to the heavy tar outlet pipe. An electric slag discharge valve is installed on the heavy tar outlet pipe, and a light tar outlet pipe is installed at the light tar outlet. Multiple flow channel baffles are spaced apart along the flow direction of the tar-ammonia water within the tank, forming a serpentine tar-ammonia water flow channel. The surface of the flow channel baffles is coated with a hydrophobic and oleophilic material.

2. The horizontal tar-ammonia water separation device according to claim 1, characterized in that, The tar-ammonia water inlet is located in the middle of the tank at the corresponding end; the light tar outlet is located at the upper part of the tank at the corresponding end, and the light tar outlet pipe is L-shaped, with the top of the vertical section connected to the light tar collection funnel, and the horizontal section extending out of the tank from the light tar outlet; the ammonia water outlet is located in the middle of the tank at the corresponding end; and the heavy tar outlet is located at the lower part of the tank at the corresponding end.

3. A horizontal tar-ammonia water separation device according to claim 1, characterized in that, The bottom plate of the tank is inclined, with the end near the tar ammonia inlet higher than the end near the heavy tar outlet; the angle between the bottom plate and the horizontal plane is 1° to 10°.

4. A horizontal tar-ammonia water separation device according to claim 3, characterized in that, The angle between the base plate and the horizontal plane is 3° to 5°.

5. A horizontal tar-ammonia water separation device according to claim 1, characterized in that, The number of flow channel baffles is 20 to 40, with a spacing of 0.5 to 1.5 m.

6. A horizontal tar-ammonia water separation device according to claim 1, characterized in that, The flow channel baffle consists of two baffles, one and two, spaced apart. Two baffles are symmetrically arranged on both sides of the width of the tank, and the outer sides of the baffles are connected to the corresponding side walls of the tank. One baffle is located in the middle of the width of the tank and is connected to the inner wall of the tank via a support rod. Gaps are left between the top of the baffles and the top plate of the tank, and between the bottom of the baffles and the bottom plate of the tank. The baffles are staggered vertically.

7. A horizontal tar-ammonia water separation device according to claim 1, characterized in that, The surface of the flow channel baffle is coated with a hydrophobic and oleophilic material.

8. A horizontal tar-ammonia water separation device according to claim 7, characterized in that, The hydrophobic and oleophilic coating is a polytetrafluoroethylene coating or a carbon fiber composite material coating.

9. A horizontal tar-ammonia water separation device according to claim 1, characterized in that, The horizontal cross-section of the trough is a rectangle with rounded ends.

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