High-efficiency coalescence separation device for ammonia-containing wastewater

Abstract

The utility model relates to an efficient coalescence and separation device for ammonia-containing wastewater, which aims at solving the problems that a ceramic filter in the prior art cannot ensure that coal tar, benzene, naphthalene and the like in the ammonia-containing wastewater are completely separated, a tray and a reboiler of a subsequent ammonia still are blocked, and normal operation of the ammonia still and the reboiler are influenced. The utility model relates to an ammonia-containing wastewater treatment device, which comprises an inlet component, a defoaming plate, a heating component, a liquid baffle, an oil collecting bag, a corrugated plate filler, a partition plate, a communicating pipe, a partition plate b, a coalescence membrane block and a gas collecting bag B. The ammonia-containing wastewater treatment device is arranged in front of a ceramic filter, tar, benzene and naphthalene in ammonia-containing wastewater are further separated from the ammonia-containing wastewater, and the separated tar is discharged into a tar intermediate tank; the residual ammonia water enters the ceramic filter for re-separation, so that the separation effect is ensured, and the normal operation of the subsequent ammonia distillation unit is ensured.

Description

Technical Field

[0001] The utility model relates to the field of coking production, in particular to a high-efficiency agglomeration and separation device for ammonia-containing wastewater. Background Art

[0002] The water quality of ammonia-containing wastewater is complex, with a wide variety of components and high pollutant concentrations. It needs to be removed from the water by a pretreatment device before it can enter the ammonia distillation process to remove ammonia nitrogen pollutants and ensure the stable operation of the biochemical treatment device.

[0003] In traditional pretreatment devices, after ammonia-containing wastewater passes through the ceramic filter, it directly enters the ammonia distillation unit. In order to ensure the long-term operation of the ceramic filter, the pore size of the ceramic filter element is relatively large, which cannot ensure the complete separation of coal tar, benzene, naphthalene, etc. in the ammonia-containing wastewater, causing blockage of the tower plates and reboiler of the subsequent ammonia distillation tower, affecting its normal operation. Utility Model Content

[0004] The utility model aims to solve the problem that the ceramic filter in the prior art cannot ensure the complete separation of coal tar, benzene, naphthalene and the like in ammonia-containing wastewater, causing blockage of the tray and reboiler of the subsequent ammonia distillation tower and affecting its normal operation.

[0005] The utility model technical means: an efficient coalescence separation device for ammonia-containing wastewater, comprising an equipment body, the equipment body comprising a head, a cylinder, a saddle and auxiliary pipe fittings, and also comprising an inlet component, a defoaming plate, a heating component, a liquid baffle, an oil collecting bag, a corrugated plate filler, a partition, a connecting pipe, a partition b, a coalescence membrane block, and an air collecting bag b;

[0006] An inlet assembly is provided at the lower part of the front end of the cylinder, a heating assembly is provided below the inlet assembly, a defoaming plate is provided above the inlet assembly, a liquid baffle is provided at the rear end of the heating assembly and the defoaming plate, the liquid baffle divides the internal space of the front end of the cylinder into two spaces, a corrugated plate filler is provided at the rear end of the liquid baffle, the corrugated plate filler is located in the middle section of the cylinder, there are three pieces of the corrugated plate filler, which are staggered and arranged in sequence up and down to form a U-shaped channel opening downward, a partition and a partition b are provided behind the three pieces of corrugated plate fillers, the partition and the partition b are vertically connected to each other to isolate a separate space in the rear section of the cylinder, and a connecting pipe is provided at the bottom of the partition;

[0007] An oil collecting bag is arranged at the bottom of the square cylinder at the rear end of the liquid baffle plate, and an air collecting bag is arranged at the top of the rear end of the cylinder, wherein a coalescing membrane block is arranged in the air collecting bag.

[0008] The inlet component is a rake distributor.

[0009] The coalesced membrane block is a loose mesh structure woven from fibers.

[0010] The advantages of the utility model of high-efficiency ammonia-containing wastewater agglomeration device are:

[0011] The utility model discloses a high-efficiency ammonia-containing wastewater coalescence separation device, which is installed in front of a ceramic filter, separates tar, benzene, naphthalene and ammonia-containing wastewater in advance, discharges the separated tar into a tar intermediate tank, and the remaining ammonia water enters the ceramic filter for further separation. The pore size of the ceramic filter element can be made very small, ensuring the separation effect and the normal operation of the subsequent ammonia distillation unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model:

[0013] Description of reference numerals: 1. Equipment body; 2. Inlet assembly; 3. Defoaming plate; 4. Heating assembly; 5. Liquid baffle plate; 6. Oil collecting bag; 7. Corrugated plate filler; 8. Partition plate; 9. Connecting pipe; 10. Partition plate b; 11. Coalescing membrane block; 12. Air collecting bag; DETAILED DESCRIPTION

[0014] like Figure 1 As shown, the utility model is a high-efficiency coalescence separation device for ammonia-containing wastewater, comprising an equipment body 1, wherein the equipment body 1 comprises a head, a cylinder, a saddle and auxiliary pipe fittings, and further comprises an inlet component 2, a defoaming plate 3, a heating component 4, a liquid baffle plate 5, an oil collecting bag 6, a corrugated plate filler 7, a partition 8, a connecting pipe 9, a partition b10, a coalescence membrane block 11, and an air collecting bag b12;

[0015] An inlet assembly 2 is provided at the lower part of the front end of the cylinder, a heating assembly 4 is provided below the inlet assembly 2, a defoaming plate 3 is provided above the inlet assembly 2, a liquid baffle 5 is provided at the rear end of the heating assembly 4 and the defoaming plate 3, the liquid baffle 5 divides the internal space of the front end of the cylinder into two spaces, a corrugated plate filler 7 is provided at the rear end of the liquid baffle 5, the corrugated plate filler 7 is located in the middle section of the cylinder, there are three pieces of the corrugated plate filler 7, which are staggered and arranged in sequence from top to bottom to form a U-shaped channel opening downward, a partition 8 and a partition b10 are provided behind the three pieces of corrugated plate fillers 7, the partition 8 and the partition b10 are vertically connected to each other to isolate a separate space in the rear section of the cylinder, and a connecting pipe 9 is provided at the bottom of the partition 8;

[0016] An oil collecting bag 6 is provided at the bottom of the square cylinder at the rear end of the liquid baffle 5 , and an air collecting bag 12 is provided at the top of the rear end of the cylinder. A coalescing membrane block 11 is provided in the air collecting bag 12 .

[0017] The inlet component 2 is a rake distributor.

[0018] The coalescing membrane block 11 is a loose mesh structure woven from extremely fine fibers, and has a relatively large surface area. Tiny dust droplets collide on its surface multiple times and continuously condense and grow, thereby bringing about a higher separation efficiency.

[0019] During installation: the equipment body 1 is composed of a head, a cylinder, a saddle and auxiliary pipe fittings. The ammonia-containing wastewater inlet component 2 is a rake structure, fixed to the equipment body 1, extending into the cylinder 2 / 3, the distribution pipe extends to the front end of the separator, and the distribution pipe has a small hole facing upward. The defoaming plate 3 is located above the rake distributor and below the center line of the cylinder. There are small holes on the plate, which are fixed to the equipment body 1, the ammonia-containing wastewater inlet component 2, and the liquid baffle 5. The heating component 4 is located under the rake distributor, and the inlet and outlet of the heating component 4 are connected to the head. The equipment is fixed to the equipment body 1 through angle steel. The liquid baffle 5 is located at the rear end of the heating component and the defoaming plate in the equipment, and is connected to the equipment body 1 and the defoaming plate 3. The corrugated plate filler 7 is located at the rear end of the liquid baffle 5, the middle section of the cylinder, and is staggered in sequence from top to bottom. The corrugated plate filler is made of oleophilic and hydrophobic materials. The oil collecting bag 6 is located at the bottom of the equipment body, below the liquid baffle 5, and the inlet is divided into two by the liquid baffle. The partition 8 and partition b10 are located behind the folding plate 7 and connected to the cylinder, isolating a separate space at the rear section of the cylinder, which is connected to the cylinder by the connecting pipe 9 (U-shaped pipe). The gas collection bag 12 is located at the uppermost part of the rear end of the cylinder, and contains the coalescing membrane block 11.

[0020] When in use: the inlet component 2 is a rake-type distributor, which extends into the lower 2 / 3 of the cylinder, and the distribution pipe extends to the front end of the separator to expand the effective separation length. The distribution pipe has small holes that open upward, and the total area of ​​the small holes is larger than the area of ​​the inlet pipe, which reduces the inlet flow rate and the area affected by the inlet turbulence, ensuring that there is a stable laminar sedimentation area under the distributor, and the turbulence in the small area helps to suspend oil droplets and emulsify oil droplets to form large oil droplets.

[0021] The defoaming plate 3 is located above the rake distributor and below the center line of the cylinder. There are small holes on the plate. When the ammonia-containing wastewater flows through the defoaming plate 3, small oil droplets aggregate and grow, while eliminating fluid turbulence and playing a role in stabilizing the flow. At the same time, when the oil droplets float up from the water phase, the emulsified oil is demulsified.

[0022] The heating component 4 is located under the rake distributor, and heats the ammonia-containing wastewater to reduce the viscosity of the oil phase, thereby ensuring that the tar in the ammonia-containing wastewater is prevented from condensing.

[0023] The liquid baffle plate 5 is located at the rear end of the heating assembly and the defoaming plate, and is connected to the cylinder and the defoaming plate, dividing the internal space at the front end of the equipment into two spaces. The front end is the feeding section, where substances with relatively high density such as tar are settled and separated. At the same time, it is ensured that the turbulence in the feeding section does not affect the settling of the liquid at the rear end. The upper end of the liquid baffle plate is connected to the rear end, and the remaining ammonia-containing wastewater goes over the liquid baffle plate and enters the rear space.

[0024] The corrugated plate filler 7 is located at the rear end of the liquid baffle plate 5, in the middle section of the cylinder, and is staggered in sequence up and down. The corrugated plate filler is made of oleophilic and hydrophobic material to capture and condense tiny oil droplets in the fluid. At the same time, due to the resistance of the corrugated plate filler itself, part of the fluid is forced to bypass the corrugated plate filler, increasing the separation and sedimentation distance.

[0025] The oil collecting bag 6 is located below the liquid baffle plate 5. The liquid baffle plate partially sinks into the oil collecting bag. The inlet is divided into two by the liquid baffle plate. The ammonia-containing wastewater containing tar settles again in the oil collecting bag, and impurities such as tar are discharged from the lower outlet.

[0026] The partition 8 and partition b10 are located behind the corrugated plate filler 7 and connected to the cylinder, isolating a separate space at the rear section of the cylinder, which is connected to the front end of the cylinder by a connecting pipe 9 (U-shaped pipe). The ammonia-containing wastewater after sedimentation separation flows into the separate space through the connecting pipe and is discharged from the drain port.

[0027] The gas collecting bag 12 is located at the uppermost part of the rear end of the cylinder, and contains a coalescing membrane block 11. The uncondensed gas in the ammonia-containing wastewater and the light oil with lower density gather in the gas collecting bag. The fine droplets in the oil product are coalesced by the coalescing membrane block and fall into the cylinder, and the light oil is discharged through the upper exhaust port.

Claims

1. A highly efficient ammonia-containing wastewater coalescence separation device, comprising a device body (1), wherein the device body (1) comprises a head, a cylinder, a saddle and auxiliary pipe fittings, characterized in that: It also includes an inlet component (2), a defoaming plate (3), a heating component (4), a liquid baffle plate (5), an oil collecting bag (6), a corrugated plate filler (7), a partition (8), a connecting pipe (9), a partition b (10), a coalescing membrane block (11), and an air collecting bag (12); An inlet assembly (2) is provided at the lower part of the front end of the cylinder, a heating assembly (4) is provided below the inlet assembly (2), a defoaming plate (3) is provided above the inlet assembly (2), a liquid baffle (5) is provided at the rear end of the heating assembly (4) and the defoaming plate (3), the liquid baffle (5) divides the internal space of the front end of the cylinder into two spaces, a corrugated plate filler (7) is provided at the rear end of the liquid baffle (5), the corrugated plate filler (7) is located in the middle section of the cylinder, there are three pieces of the corrugated plate filler (7), which are arranged in a staggered manner up and down to form a U-shaped channel opening downwards, a partition (8) and a partition b (10) are provided behind the three pieces of the corrugated plate fillers (7), the partition (8) and the partition b (10) are vertically connected to each other to isolate a separate space in the rear section of the cylinder, and a connecting pipe (9) is provided at the bottom of the partition (8); An oil collecting bag (6) is provided at the bottom of the square cylinder at the rear end of the liquid baffle plate (5), and an air collecting bag (12) is provided at the top of the cylinder at the rear end. A coalescing membrane block (11) is provided in the air collecting bag (12).

2. A highly efficient ammonia-containing wastewater coalescence and separation device as claimed in claim 1, characterized in that: The inlet component (2) is a rake distributor.

3. The high-efficiency ammonia-containing wastewater coalescence and separation device according to claim 1, characterized in that: The coalesced membrane block (11) is a loose mesh structure woven from fibers.

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