CN215609498U - A splitter for low boiling organic matter is retrieved - Google Patents

Abstract

The utility model discloses a separation device for recovering low-boiling-point organic matters, which belongs to the technical field of organic matter tail gas treatment and comprises a diversion tank body, wherein an oil-water mixture can be continuously introduced into the diversion tank body, the oil-water mixture can be divided into upper-layer waste water and lower-layer low-boiling-point organic matter solution under the action of gravity, a waste water overflow pipe and an organic solution drain pipe are sequentially arranged at the tail end of the diversion tank body in the flow direction of the oil-water mixture, a constant-temperature cooling system for avoiding the gasification of the internal low-boiling-point organic matters is arranged in the lower-layer low-boiling-point organic matter solution, a cooling area of the constant-temperature cooling system penetrates through the beginning and the end of the flow direction of the oil-water mixture, the low-boiling-point organic matter solution is cooled through the constant-temperature cooling system in the lower-layer low-boiling-point organic matter solution, the boiling-point organic matters in the diversion tank body can be effectively prevented from being boiled and gasified, the vapor pressure in the diversion tank body can be ensured, and the load of the recovery device can be reduced, and simultaneously, the pollution and waste caused by the emission of low-boiling point organic gas into the atmosphere are avoided.

Description

A splitter for low boiling organic matter is retrieved

Technical Field

The utility model relates to the technical field of organic matter tail gas treatment, in particular to a separation device for recovering low-boiling-point organic matters.

Background

In the treatment of organic matter waste gas, the low boiling point organic matter in the tail gas needs to be recovered, and the low boiling point organic matter (such as dichloromethane) in the tail gas is usually extracted by white oil, but a large amount of water is generated in the extraction process to form an oil-water mixture, if the oil-water mixture is directly introduced into a dichloromethane storage tank for storage, the white oil carrying the dichloromethane with heavy components in the oil-water mixture will sink and the water with light components will float, so that a layer of water floats on the dichloromethane solvent. When the dichloromethane is needed to be used, dichloromethane is conveyed outwards from a dichloromethane storage tank, a large amount of moisture is inevitably brought, and the experiment is relatively sensitive to water, so that the use is limited. Like "201721696556.4, the utility model discloses a layering tower for oil water mixture layering in the utility model patent of the name" quick separation recovery unit of automatic separation device and liquid ", including the cavity tower body, the inlet, go up the drain hole, drain hole and gas vent down, the oil water mixture who contains dichloromethane lets in the cavity tower body from the inlet, then under the action of gravity, the dichloromethane solution of heavy component sinks and discharges from drain hole down, the waste water come-up of light component then discharges from last drain hole, then accomplish the separation of dichloromethane solution and waste water, guarantee to let in the purity of the dichloromethane solution in the dichloromethane storage tank, avoid producing the float water in the dichloromethane storage tank. However, since the boiling point of low boiling point organic substances such as dichloromethane is low, for example, the boiling point of dichloromethane is only 39.8 ℃, and the above layered tower is easy to change with the change of the external temperature, in the environment with high temperature in summer, dichloromethane in the dichloromethane solution in the layered tower will boil and gasify, and then bubble out from water, which not only increases the vapor pressure in the layered tower and increases the load of the recovery device, but also causes environmental pollution and dichloromethane waste after a large amount of dichloromethane gas is discharged from the layered tower through the exhaust port.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provide separation equipment for recovering low-boiling-point organic matters, which cools low-boiling-point organic matter solution through a constant-temperature cooling system in the lower-layer low-boiling-point organic matter solution, can effectively avoid boiling and gasification of the low-boiling-point organic matters in the low-boiling-point organic matter solution, ensures the vapor pressure in a diversion tank, reduces the load of the recovery equipment, and simultaneously avoids pollution and waste caused by discharging low-boiling-point organic matter gas into the atmosphere.

In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a separation device for recovering low-boiling-point organic matters, which comprises a diversion tank body, wherein an oil-water mixture can be continuously introduced into the diversion tank body, the oil-water mixture can be divided into upper-layer wastewater and lower-layer low-boiling-point organic matter solution under the action of gravity, a wastewater overflow pipe and an organic solution drain pipe are sequentially arranged at the tail end of the diversion tank body in the flowing direction of the oil-water mixture, a constant-temperature cooling system for preventing the low-boiling-point organic matters in the lower-layer low-boiling-point organic matter solution from being gasified is arranged in the lower-layer low-boiling-point organic matter solution, and a cooling area of the constant-temperature cooling system penetrates through the beginning and the end of the flowing direction of the oil-water mixture.

Preferably, the constant temperature cooling system is including setting up the serpentine coil of water conservancy diversion jar body lower part, serpentine coil's water inlet is located the end of oil water mixture flow direction, serpentine coil's delivery port is located the initiating terminal of oil water mixture flow direction, serpentine coil's water inlet, delivery port all stretch out the water conservancy diversion jar body.

Preferably, the arrangement density of the serpentine coil gradually increases from the end to the beginning of the flow direction of the oil-water mixture.

Preferably, a guide plate which enables the oil-water mixture to integrally flow in an S shape is arranged in the guide tank body.

Preferably, an oil-water mixture feed port is formed in the initial end of the diversion tank body in the flow direction of the oil-water mixture, and the oil-water mixture feed port is located in the upper portion of the diversion tank body.

Preferably, a buffer plate is arranged in the diversion tank body corresponding to the oil-water mixture feeding port.

Preferably, an overflow port of the waste water overflow pipe is arranged upwards.

Preferably, the organic solution drain pipe is in including vertical setting the internal portion of water conservancy diversion jar outer tube, cover are established the inside inner tube of outer tube, the outer tube both ends are sealed, the bottom is equipped with the confession the inlet that low boiling point organic matter solution got into, when the open-top of inner tube is higher than the overflow critical point waste water the boundary of low boiling point organic matter solution, simultaneously the open-top of inner tube is less than the overflow mouth of waste water overflow pipe, the bottom opening of inner tube is followed the lower part of the water conservancy diversion jar body is stretched out.

Preferably, the bottom of the diversion tank body is provided with a drain port for draining liquid in the diversion tank body.

Preferably, the top of the diversion tank body is provided with an air outlet which is always communicated with the outside.

Compared with the prior art, the utility model has the following technical effects:

1. according to the utility model, a constant-temperature cold area system is arranged in the lower-layer low-boiling-point organic matter (such as dichloromethane) solution, a cooling area of the constant-temperature cooling system penetrates through the beginning and the end of the flowing direction of an oil-water mixture, the oil-water mixture is cooled by the constant-temperature cold area system, particularly the lower-layer low-boiling-point organic matter solution, so that the low-boiling-point organic matter in the low-boiling-point organic matter solution is ensured to be kept in a liquid state, boiling gasification is avoided, the vapor pressure in the diversion tank body is increased, the load of recovery equipment is increased, meanwhile, the gasified low-boiling-point organic matter can be prevented from being exhausted out of the atmosphere, waste and pollution to the atmosphere are avoided, meanwhile, the constant-temperature cold area system can keep constant-temperature cooling, and the phenomenon that the liquid in the diversion tank body freezes due to too low temperature and influences the liquid flowing can be avoided.

2. The constant-temperature cooling system comprises the serpentine coil, wherein the water inlet of the serpentine coil is positioned at the tail end of the flowing direction of the oil-water mixture, the water outlet of the serpentine coil is positioned at the starting end of the flowing direction of the oil-water mixture, and the flowing direction of cooling water is opposite to but not the same with the flowing direction of the oil-water mixture, so that the phenomenon that the temperature of cooling water in the whole serpentine coil is insufficient due to the fact that the cooling water which is just introduced directly contacts the oil-water mixture with the highest temperature can be avoided, and the cold energy in a diversion tank body is ensured to be enough to enable low-boiling-point organic matters to be kept in a liquid state.

3. The arrangement density of the serpentine coil pipe is gradually increased from the tail end to the starting end of the flow direction of the oil-water mixture so as to adapt to the distribution of the temperature field of the oil-water mixture in the diversion tank body, and the temperature of the part just introduced into the oil-water mixture is highest, so that the density of the serpentine coil pipe is also the most dense.

4. In the utility model, the guide plate which enables the oil-water mixture to integrally flow in an S shape is arranged in the guide tank body, so that the stroke length of liquid flow is increased as much as possible in the limited space of the guide tank body, the liquid in the guide tank body is approximate to a still water effect, and the layering of the wastewater and the low-boiling-point organic matter solution in the guide tank body cannot be influenced by the continuously introduced oil-water mixture.

5. According to the utility model, the buffer plate is arranged at the oil-water mixture feeding port, so that the flow velocity of the oil-water mixture can be reduced, and the influence on liquid stratification in the diversion tank body is reduced.

6. The organic solution drain pipe is a double-sleeve pipe, namely comprises an outer pipe and an inner pipe sleeved in the outer pipe, the double-sleeve pipe can achieve the effect of static pressure overflow, lower-layer low-boiling-point organic solution flows into the outer pipe through a liquid inlet at the bottom of the outer pipe, the low-boiling-point organic solution is pressed into the inner pipe through liquid static pressure, the low-boiling-point organic solution flows out of the diversion tank body through the inner pipe, the pressure is provided through static pressure generated after the whole liquid in the diversion tank body has a certain height, and the liquid entering the inner pipe is always the liquid at the bottommost part of the lower-layer low-boiling-point organic solution, so that the purity of the low-boiling-point organic solution is ensured, and wastewater is prevented from flowing into the inner pipe together.

7. The drainage port can completely drain the liquid in the diversion tank body when the diversion tank body is not used so as to be used for the next time.

8. The top of the diversion tank body is provided with an exhaust port which is always communicated with the outside so as to ensure the pressure in the diversion tank body and ensure that an oil-water mixture is continuously and smoothly introduced into the diversion tank body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic top view of a separation apparatus;

FIG. 2 is a schematic rear view of the separating apparatus;

fig. 3 is a sectional view taken along line a-a in fig. 2.

Description of reference numerals: 1. a diversion tank body; 2. a waste water overflow pipe; 3. an oil-water mixture feed port; 4. a discharge port; 5. an exhaust port; 6. an outer tube; 7. an inner tube; 8. a baffle; 9. a buffer plate; 10. a serpentine coil; 11. a low temperature water inlet; 12. a low-temperature water outlet; 13. an overflow port; 14. a liquid inlet; 15. and (4) discharging the organic solution.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment provides a splitter for low boiling point organic matter is retrieved, as shown in fig. 1 to fig. 3, including the water conservancy diversion jar body 1, sustainable letting in oil water mixture in the water conservancy diversion jar body 1, then the oil water mixture is at the action of gravity along with time, light component water goes up, heavy component oil sinks, it becomes upper waste water and lower floor's low boiling point organic matter solution to separate into, the end that lies in the oil water mixture flow direction on the water conservancy diversion jar body 1 is equipped with waste water overflow pipe 2 in proper order, the organic solution drain pipe, waste water overflow pipe 2 can pass through flange joint with the waste water storage tank, the organic solution drain pipe passes through flange joint with organic solution (dichloromethane) storage tank, be equipped with constant temperature cooling system in the lower floor's low boiling point organic matter solution, constant temperature cooling system's cooling region link up the beginning and the end of oil water mixture flow direction. Under the cooling action of the constant-temperature cooling system, the low-boiling-point organic matters (such as dichloromethane) in the oil-water mixture can keep stable liquid and can not be boiled and gasified to be separated from the oil-water mixture, so that the saturated vapor pressure of the organic matters in the diversion tank body 1 is reduced. The oil-water mixture is at 2 to waste water overflow pipe, the organic solution drain pipe flow in-process, under the action of gravity, the layering gradually, the waste water come-up of light component, the low boiling organic matter (dichloromethane) solution of heavy component sinks, along with the liquid level in the water conservancy diversion jar body 1 rises gradually, the waste water of light component gets into in the waste water overflow pipe 2 and discharges the water conservancy diversion jar body 1 from the overflow mouth 13 department of waste water overflow pipe 2, get into the waste water storage tank, the low boiling organic matter then gets into in the organic solution (dichloromethane) storage tank from organic solution drain pipe discharge water conservancy diversion jar body 1. Meanwhile, under the action of the constant-temperature cooling system, the constant temperature in the flow guide tank body 1 can be ensured, and the phenomenon that the liquid in the flow guide tank body 1 is frozen due to the fact that the temperature in the flow guide tank body 1 is too low is avoided, so that the liquid is not beneficial to being discharged.

In this embodiment, as shown in fig. 1 to fig. 3, constant temperature cooling system includes serpentine coil 10, and serpentine coil 10 props up through the support and establishes in the 1 lower part of the water conservancy diversion jar body to heat the low boiling organic matter solution of oil water mixture lower floor, and serpentine coil 10 needs to separate certain distance with the jar wall of the water conservancy diversion jar body 1, and the distance between serpentine coil 10 should satisfy the radiation range of cold source through calculating, and serpentine coil 10's heat transfer area should satisfy the cooling requirement through the heat calculation. The water inlet of serpentine coil 10, low temperature water inlet 11 sets up the end at the oil water mixture flow direction promptly, serpentine coil 10's delivery port, low temperature water outlet 12 is located the initiating terminal of oil water mixture flow direction promptly, low temperature water inlet 11, low temperature water outlet 12 all stretches out the water conservancy diversion jar body 1, preferably, low temperature water inlet 11, low temperature water outlet 12 can set up on the homonymy of the water conservancy diversion jar body 1, low temperature water inlet 11 is close to waste water overflow pipe 2 department, low temperature water outlet 12 is close to the position that oil water mixture let in the water conservancy diversion jar body 1. The cooling water enters the serpentine coil 10 from the low-temperature water inlet 11 and then flows out from the low-temperature water outlet 12, and the direction of the cooling water is approximately opposite to the flowing direction of the oil-water mixture, so that the tail end and the starting end of the flowing direction of the oil-water mixture in the diversion tank body 1 can be well cooled.

Further, in this embodiment, the arrangement density of the serpentine coil 10 gradually increases from the end to the beginning of the oil-water mixture flowing direction, that is, the distance between the coils of the serpentine coil 10 gradually decreases from the end of the wastewater overflow pipe 2 and the organic solution drainage pipe to the end of the oil-water mixture introduced into the diversion tank 1, so as to adapt to the distribution of the liquid temperature field in the diversion tank 1, and ensure that the oil-water mixture just supplied into the diversion tank 1 has enough cooling capacity to cool.

In this embodiment, as shown in fig. 1 to 3, be equipped with two guide plates 8 in the guide tank body 1, two guide plates 8 divide and establish the offside at the guide tank body 1, the height of guide plate 8 extends to the top of the guide tank body 1, the oil-water mixture is under the effect of two guide plates 8, wholly become the S-shaped flow, with the liquid stroke of extension oil-water mixture, make the oil-water mixture in the guide tank body 1 be nearly still water state, thereby make follow-up oil-water mixture that continuously lets in get into behind the guide tank body 1, can not disturb the internal liquid of guide tank, influence the layering in the guide tank body 1.

Further, in this embodiment, as shown in fig. 1 to 3, the organic solution drain pipe is located at the end of the S-shaped water flow (i.e., the rear side wall of the diversion tank body 1 as shown in fig. 3), the waste water overflow pipe 2 is located at a position closer to the front side wall on the left side wall of the diversion tank body 1, when the water flow passes, the water flow first encounters the waste water overflow pipe 2, and when the upper waste water level exceeds the overflow port 13 of the waste water overflow pipe 2, the waste water is discharged from the waste water overflow port 13 and then enters the waste water storage tank. Then the lower layer of low boiling point organic solution is discharged out of the diversion tank body 1 from the organic solution drain pipe and enters the low boiling point organic solution storage tank.

In this embodiment, as shown in fig. 1 to 3, an oil-water mixture feed port 3 is disposed at the starting end of the diversion tank body 1 in the flow direction of the oil-water mixture, and the oil-water mixture feed port 3 is located at the upper portion of the diversion tank body 1. Preferably, the oil-water mixture feed port 3 is located on the opposite side wall of the wastewater overflow pipe 2 and the organic solution drain pipe, referring to fig. 3, i.e. on the front side wall of the diversion tank body 1, so as to increase the liquid flow path as much as possible.

Further, in this embodiment, be equipped with the buffer board 9 corresponding to oil water mixture feed inlet 3 department in the water conservancy diversion jar body 1, can reduce oil water mixture's speed, further reduce the liquid disturbance to the water conservancy diversion jar body 1 in, when avoiding injecting oil water mixture, cause the disturbance to the layering of liquid.

In this embodiment, overflow mouth 13 of waste water overflow pipe 2 sets up, is favorable to forming the overflow effect, and only when upper waste water surpassed overflow mouth 13, waste water could discharge waste water overflow pipe 2, gets into the waste water storage tank to mix low boiling point organic matter solution in avoiding waste water.

In this embodiment, as shown in fig. 1 to 3, the organic solution drain pipe includes outer tube 6, inner tube 7, and outer tube 6 is vertical to be set up in the water conservancy diversion jar body 1, and the both ends of outer tube 6 are fixed respectively at the roof and the diapire of the water conservancy diversion jar body 1, and the both ends of outer tube 6 are sealed, and the bottom of outer tube 6 is equipped with inlet 14, and the diapire of preferred outer tube 6 is equipped with the rectangular inlet 14 of round evenly distributed to increase the feed liquor area. The inner pipe 7 is sleeved in the outer pipe 6 and fixed on the bottom wall of the diversion tank body 1 through a support, two ends of the inner pipe 7 are opened, the top opening of the inner pipe 7 is higher than a boundary line of wastewater and low-boiling-point organic solution when an overflow critical point exists and is lower than an overflow port 13 of the wastewater overflow pipe 2, and the bottom opening of the inner pipe 7 extends out of the lower part of the diversion tank body 1 to form an organic solution outlet 15 and is connected with an organic solution storage tank through a flange. When the oil-water mixture just enters the diversion tank body 1, the lower-boiling-point organic solution enters the outer pipe 6 through the liquid inlet 14 of the outer pipe 6, but the liquid level is lower than the top opening of the inner pipe 7, the lower-boiling-point organic solution cannot be discharged out of the diversion tank body 1 from the inner pipe 7 at the moment, the liquid level of the lower-boiling-point organic solution in the inner pipe 7 gradually rises along with the continuous introduction of the oil-water mixture, and the lower-boiling-point organic solution cannot be discharged out of the organic solution outlet 15 from the inner pipe 7 until the oil-water mixture submerges in the top opening of the inner pipe 7. At this time, the liquid discharged from the inner tube 7 is the liquid at the bottom of the lower-layer low-boiling-point organic solution, so that the purity of the low-boiling-point organic solution is ensured, and the waste water is prevented from being mixed.

Further, in order to guarantee that the low boiling point organic matter is under the static pressure, can be better get into inner tube 7 in, can guarantee low boiling point organic matter purity simultaneously, in this embodiment, inner tube 7 open-top's high accessible formula obtains:

h1*ρ1＝h2*ρ1+(h3-h2)*ρ2

wherein h1 is the height of the inner tube 7, h2 is the liquid level height of low boiling point organic matter (such as dichloromethane), h3 is the liquid level height of wastewater, ρ 1 is the density of low boiling point organic matter (such as dichloromethane), and ρ 2 is the density of water.

In this embodiment, the drain port 4 is formed at the bottom of the diversion tank 1 to drain all the liquid in the diversion tank 1 when no layering is performed.

In this embodiment, the top of the diversion tank body 1 is provided with the exhaust port 5 which is communicated with the outside all the time, and the air pressure in the diversion tank body 1 is the same as the outside air pressure all the time, so that the pressure balance in the diversion tank body 1 is ensured, and the oil-water mixture is continuously and smoothly introduced into the diversion tank body 1.

The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.

Claims (10)

1. The utility model provides a splitter for low boiling organic matter is retrieved, its characterized in that, includes sustainable letting in oil water mixture and makes oil water mixture falls into the water conservancy diversion jar body of upper waste water, lower floor low boiling organic matter solution because of the action of gravity, lie in on the water conservancy diversion jar body the end of oil water mixture flow direction is equipped with waste water overflow pipe, organic solution drain pipe in proper order, be equipped with the constant temperature cooling system who avoids its inside low boiling organic matter gasification in the lower floor low boiling organic matter solution, constant temperature cooling system's cooling zone link up the beginning end of oil water mixture flow direction.

2. The separation equipment for recovering the low-boiling-point organic matters according to claim 1, wherein the constant-temperature cooling system comprises a serpentine coil arranged at the lower part of the diversion tank body, a water inlet of the serpentine coil is positioned at the tail end of the flowing direction of the oil-water mixture, a water outlet of the serpentine coil is positioned at the starting end of the flowing direction of the oil-water mixture, and the water inlet and the water outlet of the serpentine coil both extend out of the diversion tank body.

3. The separation device for recovering the low-boiling-point organic matters according to claim 2, wherein the serpentine coil is arranged in a density which gradually increases from the end to the beginning of the flowing direction of the oil-water mixture.

4. The separation equipment for recovering the low-boiling-point organic matters according to claim 1, wherein a guide plate for enabling the oil-water mixture to integrally flow in an S shape is arranged in the guide tank body.

5. The separation equipment for recovering the low-boiling-point organic matters according to claim 4, wherein an oil-water mixture feeding hole is formed in the initial end of the diversion tank body in the flow direction of the oil-water mixture, and the oil-water mixture feeding hole is formed in the upper part of the diversion tank body.

6. The separation equipment for recovering the low-boiling-point organic matters according to claim 5, wherein a buffer plate is arranged in the diversion tank body corresponding to the oil-water mixture feeding port.

7. The separation equipment for recovering the low-boiling-point organic matter according to claim 1, wherein an overflow port of the waste water overflow pipe is arranged upward.

8. The separation equipment for recycling low-boiling-point organic matters according to claim 7, wherein the organic solution drain pipe comprises an outer pipe and an inner pipe, the outer pipe and the inner pipe are vertically arranged in the diversion tank body, the inner pipe is sleeved in the outer pipe, two ends of the outer pipe are sealed, a liquid inlet for the low-boiling-point organic matter solution to enter is formed in the bottom of the outer pipe, the top opening of the inner pipe is higher than a boundary line between the wastewater and the low-boiling-point organic matter solution when an overflow critical point is formed, the top opening of the inner pipe is lower than the height of an overflow port of the wastewater overflow pipe, and the bottom opening of the inner pipe extends out of the lower portion of the diversion tank body.

9. The separation device for recovering the low-boiling-point organic matters according to any one of claims 1 to 8, wherein a drain port for draining liquid in the diversion tank body is formed at the bottom of the diversion tank body.

10. The separation equipment for recovering the low-boiling-point organic matters according to claim 9, wherein the top of the diversion tank body is provided with an exhaust port which is always communicated with the outside.

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