CN219098832U - Pervaporation device - Google Patents

Abstract

The utility model discloses a pervaporation device, which comprises a membrane component, a condenser, a vacuum pump, a buffer tank, a raw material pump and a feed liquid barrel, wherein the water inlet end of the feed liquid barrel is connected with the water outlet end of the raw material side of the membrane component through a water inlet pipe, the water outlet section of the feed liquid barrel is connected with the input end of the raw material pump through a water outlet pipe, the output end of the raw material pump is connected with the water inlet end of the raw material side of the membrane component through a water outlet pipe, the permeation side of the membrane component is connected with the water inlet of the buffer tank through a vaporization pipe, the water outlet of the buffer tank is connected with the water inlet end of the vacuum pump, and the water outlet end of the vacuum pump is connected with the water inlet end of the condenser. The utility model does not introduce exogenous components into the wastewater treatment process, the internal components of the device can not be polluted, the penetrating fluid can be recycled, and only a small amount of distillation residual liquid is generated in the whole process, namely, no waste is discharged, the product is clean, and no pollutant is generated.

Description

Pervaporation device

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a pervaporation device.

Background

The high-concentration nondegradable organic industrial wastewater has long influence time and great influence degree on water environment, the treatment difficulty is also great, the principle of the existing organic wastewater treatment mode is mainly an AO water treatment process or/and a membrane filtration treatment process, but the wastewater treatment mode only aims at standard emission, and has some defects.

1: the membrane treatment process is mainly to prepare a homogeneous membrane or a composite membrane by taking a high molecular polymer as a main body, but because the components of industrial waste liquid are complex, the membrane can be polluted, and more serious, the membrane can be corroded to destroy the structure of the membrane;

2: the AO water treatment process has a long wastewater treatment period, and a medicament is introduced to treat some elements in the wastewater after AO treatment; the process accelerates the treatment efficiency by increasing the internal circulation ratio, which can seriously increase the wastewater treatment cost.

Disclosure of Invention

The utility model aims to provide a pervaporation device which comprises a membrane module, a condenser, a vacuum pump, a buffer tank, a raw material pump and a material liquid barrel, wherein the water inlet end of the material liquid barrel is connected with the water outlet end of the raw material side of the membrane module through a water inlet pipe, the water outlet section of the material liquid barrel is connected with the input end of the raw material pump through a water outlet pipe, the output end of the raw material pump is connected with the water inlet end of the raw material side of the membrane module through a water outlet pipe, the permeate side of the membrane module is connected with the water inlet of the buffer tank through a vaporization pipe, the water outlet of the buffer tank is connected with the water inlet end of the vacuum pump, and the water outlet end of the vacuum pump is connected with the water inlet end of the condenser.

As a further preferable mode, a tee joint is arranged on the water inlet pipe, a reflux regulating valve is arranged at one end of the water inlet pipe adjacent to the membrane component, the water inlet of the tee joint is communicated with the membrane component, a water outlet of the tee joint is provided with a sampling port, and the other water outlet of the tee joint is communicated with the feed liquid barrel.

As a further preferable mode, the feed liquid barrel is communicated with the drain pipe through a group of branch pipes, and flow regulating valves are arranged on the branch pipes.

As a further preferred aspect, the drain pipe is provided with a flow meter, the flow meter is adjacent to the membrane module, and the flow regulating valve is used for regulating the pressure in the drain pipe.

As a further preference, a pipe filter is mounted on the outlet pipe.

As a further preferable mode, a clean-out port is arranged at the bottom of the buffer tank.

Through the technical scheme, the utility model has the beneficial effects that:

1. the product quality is improved: the process does not introduce exogenous components, and the internal components of the device are not polluted.

2. Environmental protection, pollution discharge reduction: the permeate can be recycled, only a small amount of distillation residual liquid is generated in the whole process, namely, no waste is discharged, and the product is clean and no pollutant is generated.

3. Energy saving and operation cost reduction: no reflux is needed, only a small amount of materials are vaporized, and the needed phase change latent heat is small.

4. The efficiency is high: is not affected by azeotropy, and can meet the requirement of ppm-level low water content in one step.

Drawings

FIG. 1 is a block diagram of a pervaporation device according to the present utility model.

In the figure: the device comprises a membrane component 1, a reflux regulating valve 2, a flow regulating valve 3, a flowmeter 4, a condenser 5, a vacuum pump 6, a buffer tank 7, a raw material pump 8, a pipeline filter 9, a feed liquid barrel 10 and a sampling port 11.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The pervaporation organic membrane technology is a process for realizing mixture separation by taking the vapor pressure difference of each component in an organic solvent as a driving force and depending on the property of different dissolution and diffusion rates of each component in the membrane.

Referring to fig. 1, the pervaporation device provided by the utility model comprises a membrane module 1, a condenser 5, a vacuum pump 6, a buffer tank 7, a raw material pump 8 and a feed liquid barrel 10, wherein the water inlet end of the feed liquid barrel 10 is connected with the water outlet end of the raw material side of the membrane module 1 through a water inlet pipe, the water outlet section of the feed liquid barrel 10 is connected with the input end of the raw material pump 8 through a water outlet pipe, the output end of the raw material pump 8 is connected with the water inlet end of the raw material side of the membrane module 1 through a water outlet pipe, the permeation side of the membrane module 1 is connected with the water inlet end of the buffer tank 7 through a vaporization pipe, the water outlet end of the buffer tank 7 is connected with the water inlet end of the vacuum pump 6, and the water outlet end of the vacuum pump 6 is connected with the water inlet end of the condenser 5.

Specifically, raw material wastewater is conveyed to the water inlet end of the membrane assembly 1 in the feed liquid barrel 10 through the raw material pump 8, after entering the membrane assembly 1, organic matters are easier to permeate through the membrane than water, the concentration of the organic matters is increased by a plurality of times than that of the raw material side on the permeation side of the membrane, and the organic matters are gasified by pumping air through the vacuum pump 6 and conveyed to the condenser 5, and are condensed and collected. The concentration of the organic matters at the permeate side of the membrane is reduced, the membrane returns to the feed liquid barrel 10 and is circularly removed, and finally, the concentration of the organic matters in the wastewater of the feed liquid barrel 10 is reduced to the required concentration.

It should be noted that, the membrane component is specifically a pervaporation membrane, the whole device can be controlled by adopting a PLC, the specific control flow is the prior art, redundant description is not made here, the device adopts the PLC to control only the work of the vacuum pump 6 and the raw material pump 8, the control points are few, the logic relationship is simple, and the operation is safe. The device can be made into skid-mounted integrated equipment, so that the occupied area of the equipment is further reduced, and the integration level of the device is improved.

Further, a tee joint is arranged on the water inlet pipe, a reflux regulating valve 2 is arranged at one end of the water inlet pipe adjacent to the membrane component 1, the water inlet of the tee joint is communicated with the membrane component 1, a water outlet of the tee joint is provided with a sampling port 11, and the other water outlet of the tee joint is communicated with a feed liquid barrel 10.

Specifically, the sampling port 11 is used for sampling and detecting the backwater water at the raw material side of the membrane module 1, and determining the organic matter content in the backwater water.

Further, the feed liquid barrel 10 is communicated with the drain pipe through a group of branch pipes, and the branch pipes are provided with flow regulating valves 3.

Further, a flowmeter 4 is installed on the drain pipe, the flowmeter 4 is adjacent to the membrane assembly 1, and the flow regulating valve 3 is used for regulating the pressure in the drain pipe.

The flow rate expected to enter the inside of the membrane module 1 can be adjusted to an appropriate flow rate by the flow meter 4.

Further, the pipe filter 9 is installed on the water outlet pipe, fine impurities in the raw materials are filtered through the pipe filter 9, and the fine impurities in the raw materials are placed into the raw material pump 8, so that the raw material pump 8 is damaged.

Further, a clean opening is formed in the bottom of the buffer tank 7.

Specifically, the purge port is used to detect whether the device has a leak problem, and if there is a greater outflow of liquid, indicating that there is a potential for a leak problem, the membrane module needs to be inspected.

Working principle: the pervaporation device of this application during operation: the method comprises the following steps:

step one: the equipment performs a water-through experiment to detect whether leakage exists or not;

step two: under the stop state, determining that the raw material wastewater does not have solid particles and residues and has overlarge viscosity, and ensuring that the wastewater is a normal solution and is uniform and stable; the reflux regulating valve 2 is in a closed state, the flow regulating valve 3 is regulated to a maximum opening state, and the outlet valve of the condenser 5 is in an open state;

step three: after the vacuum pump 6 is started for 2 minutes, the reflux regulating valve 2 is opened, the raw material pump 8 is started, the flow regulating valve 3 is regulated to a proper flow, the reflux regulating valve 2 is regulated to a proper pressure, after the device is operated for a period of time, a clean opening of the buffer tank 7 is opened to check whether liquid flows out, if the liquid flows out more, the problem of leakage possibly exists is indicated, and the membrane assembly 1 needs to be checked;

step four: if the membrane component 1 has no leakage problem, 5 low-temperature water is led into the condenser, the device operates normally, and samples are taken every 30 minutes;

step five: after the completion of the operation, the raw material pump 8 was turned off, the reflux control valve 2 was closed, and after 10 minutes, the vacuum pump 6 was turned off.

The pervaporation device can reduce the treatment cost of the organic wastewater by about 30%, reduce the energy consumption by about 40%, and realize the recovery of partial organic matters in the wastewater.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A pervaporation device, characterized in that: including membrane module (1), condenser (5), vacuum pump (6), buffer tank (7), raw materials pump (8) and feed liquid bucket (10), the inlet end of feed liquid bucket (10) is through the play water end of inlet tube coupling in membrane module (1) raw materials side, the play water section of feed liquid bucket (10) is through the input of outlet pipe coupling in raw materials pump (8), the output of raw materials pump (8) is through the inlet end of drain pipe coupling in membrane module (1) raw materials side, membrane module (1) permeate side is through the water inlet of evaporation union coupling in buffer tank (7), the delivery port of buffer tank (7) is connected in the inlet end of vacuum pump (6), the outlet end connection of vacuum pump (6) is with the inlet end of condenser (5).

2. A pervaporation device according to claim 1, wherein: the three-way water inlet pipe is provided with a three-way pipe, one end of the water inlet pipe adjacent to the membrane component (1) is provided with a reflux regulating valve (2), the water inlet of the three-way pipe is communicated with the membrane component (1), one water outlet of the three-way pipe is provided with a sampling port (11), and the other water outlet of the three-way pipe is communicated with a feed liquid barrel (10).

3. A pervaporation device according to claim 1, wherein: the feed liquid bucket (10) is communicated with the drain pipe through a group of branch pipes, and flow regulating valves (3) are arranged on the branch pipes.

4. A pervaporation device according to claim 3, wherein: the flow meter (4) is arranged on the drain pipe, the flow meter (4) is adjacent to the membrane assembly (1), and the flow regulating valve (3) is used for regulating the pressure in the drain pipe.

5. A pervaporation device according to claim 1, wherein: and a pipeline filter (9) is arranged on the water outlet pipe.

6. A pervaporation device according to claim 1, wherein: the bottom of the buffer tank (7) is provided with a clean opening.

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