CN213738683U

CN213738683U - Tandem type low-temperature normal-pressure evaporation chamber

Info

Publication number: CN213738683U
Application number: CN202022322830.XU
Authority: CN
Inventors: 黄书恒; 陈进猛; 陈贵标
Original assignee: Suqian Rundi Environmental Protection Technology Co ltd
Current assignee: Suqian Rundi Environmental Protection Technology Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-07-20
Anticipated expiration: 2030-10-19

Abstract

The utility model provides a serial-type low temperature ordinary pressure evaporating chamber, includes ventilation pipe, demister, circulating pump, apron, evaporating chamber, overflow weir, heat exchanger, solution tank, the apron includes bottom plate, space bar and roof, and the bottom plate is located the solution tank top layer, and the space bar is located between two adjacent evaporating chambers, and the roof is located top layer evaporating chamber top, the ventilation pipe is "S" type curve and establishes ties each evaporating chamber, the demister is located the wind exit department of evaporating chamber, solution tank and top layer evaporating chamber material mouth are connected to the circulating pump, and top layer overflow weir is connected to top layer evaporating chamber material mouth, heat exchanger is the perforated plate, and the overflow weir of place evaporating chamber is connected to heat exchanger' S one end, and the other end is connected the overflow hole on the evaporating chamber bottom plate of place evaporating chamber bottom space bar or bottom, overflow hole below vertical alignment overflow weir. The utility model discloses simple structure, evaporation efficiency is high, has very high practical value.

Description

Tandem type low-temperature normal-pressure evaporation chamber

Technical Field

The utility model relates to a waste liquid evaporative concentration technical field, concretely relates to serial-type low temperature ordinary pressure evaporating chamber.

Background

In the existing low-temperature normal-pressure evaporation equipment, an evaporation chamber is generally formed by connecting a single evaporation chamber or a plurality of evaporation chambers in parallel, the evaporation chamber contains a heat and mass exchanger, a defoaming device and the like, and if the heat exchange requirement needs to be met, the heat exchange area is generally higher in requirement. The traditional single evaporation chamber has to finish the evaporation purpose in one chamber, so the required area of the evaporation chamber is usually large and the occupied area is large; the evaporation efficiency of the evaporation chambers connected in parallel is not obviously improved compared with single-stage evaporation while the control difficulty is increased due to multi-stage water inlet and air inlet.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model discloses the research has designed a serial-type low temperature ordinary pressure evaporating chamber, its aim at: the heat exchange efficiency of the evaporation chamber is improved under the condition that the water inflow and the air inflow are the same.

The technical solution of the utility model is as follows:

a series low-temperature normal-pressure evaporation chamber comprises a ventilation pipe, a demister, a circulation pump, a cover plate, evaporation chambers, overflow weirs, a heat exchanger and a solution tank, wherein the cover plate comprises a bottom plate, a partition plate and a top plate, the bottom plate is positioned at the top layer of the solution tank, the partition plate is positioned between two adjacent evaporation chambers, the top plate is positioned at the top of the top layer evaporation chamber, the side surface of the evaporation chamber at the bottom layer is provided with a ventilation pipe inlet, the side surface of the evaporation chamber at the top layer is provided with a ventilation pipe outlet, the ventilation pipe is in an S-shaped curve and connects the evaporation chambers in series, the demister is positioned at the air outlet of the evaporation chambers, the inlet of the circulation pump is connected with the solution tank through a pipeline, the outlet of the circulation pump is connected with a material port of the evaporation chamber at the top layer through a pipeline, the material port of the evaporation chamber at the top layer is connected with the overflow weir, the heat exchanger is a porous plate, one end of the heat exchanger is connected with the overflow weir at the evaporation chamber, the other end of the overflow weir at the bottom partition plate at the evaporation chamber or the overflow hole on the bottom plate of the evaporation chamber at the bottom layer, the lower part of the overflow hole is vertically aligned with the overflow weir.

Preferably, the number of evaporation chambers is at least 2.

Preferably, the heat and mass exchanger is inclined at an angle of 35 to 55 degrees.

Preferably, the distance between the centers of the small holes on the heat and mass exchanger is 2.5cm, and the aperture of each small hole is 0.8-1.2 cm.

The outside of the solution tank is connected with a downcomer which is a hollow transparent cylinder.

The bottom of the solution tank is provided with a guide plate, the short side of the guide plate is the same as that of the solution tank, and the long side of the guide plate is larger than that of the solution tank.

The solution tank is provided with a high liquid level alarm, a medium liquid level alarm and a low liquid level alarm.

Preferably, the circulating pump is a south pipeline pump YD series.

The utility model has the advantages that: the utility model discloses compare in single-stage evaporator, under the same heat transfer area condition, change the evaporating chamber into a plurality of cell bodies by a traditional big room body and install from top to bottom, the saving equipment takes up an area of, compares in multistage parallelly connected evaporimeter, under the same heat transfer area condition, because heat supply is more concentrated for every layer of heat transfer board is cold, the heat source contact is more abundant, and evaporation efficiency obviously promotes.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a plan view of the heat and mass exchanger of the present invention.

Wherein: 1. the device comprises a ventilation pipe, 2, a demister, 3, a circulating pump, 4, an evaporation chamber, 5, an overflow weir, 6, a heat-mass exchanger, 7, a solution tank, 8, a bottom plate, 9, a partition plate, 10, a top plate, 11, a ventilation pipe inlet, 12, a ventilation pipe outlet, 13, a circulating pump inlet, 14, a circulating pump outlet, 15, a top layer evaporation chamber material port, 16, a downcomer, 17, a guide plate, 18, a high liquid level alarm, 19, a middle liquid level alarm, 20, a low liquid level alarm, 21, an overflow hole, 22 and a small hole.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1 and 2, a series-connection type low-temperature normal-pressure evaporation chamber comprises a vent pipe 1, a demister 2, a circulating pump 3, a cover plate, evaporation chambers 4, an overflow weir 5, a heat-mass exchanger 6 and a solution tank 7, wherein the cover plate comprises a bottom plate 8, a partition plate 9 and a top plate 10, the bottom plate 8 is positioned at the top layer of the solution tank 7, the partition plate 9 is positioned between two adjacent evaporation chambers 4, the top plate 10 is positioned at the top of the evaporation chamber 4 at the top layer, a vent pipe inlet 11 is arranged on the side surface of the evaporation chamber 4 at the bottom layer, a vent pipe outlet 12 is arranged on the side surface of the evaporation chamber 4 at the top layer, the vent pipe 1 is in an "S" shape curve and connects the evaporation chambers 4 in series, the number of the evaporation chambers 4 is at least 2, the demister 2 is positioned at the wind outlet of the evaporation chambers 4, the circulating pump inlet 13 is connected with the solution tank 7 through a pipeline, and the pump outlet 14 is connected with a material port 15 of the evaporation chamber at the top layer through a pipeline, the material port 15 of the top evaporation chamber is connected with the top overflow weir 5, the heat and mass exchanger 6 is a porous plate, the distance between the centers of the small holes 22 on the heat and mass exchanger is 2.5cm, the aperture of each small hole 22 is 0.8-1.2cm, one end of the heat and mass exchanger 6 is connected with the overflow weir 5 of the evaporation chamber 4, the other end of the heat and mass exchanger is connected with the overflow hole 21 on the partition board at the bottom of the evaporation chamber 4 or the bottom evaporation chamber bottom board, the lower part of the overflow hole 21 is vertically aligned with the overflow weir 5, the outside of the solution tank 7 is connected with a downcomer 16, the downcomer 16 is a hollow transparent cylinder, a guide plate 17 is arranged at the bottom of the solution tank, the short side of the guide plate 17 is the same as the short side of the solution tank 7, the long side of the guide plate 17 is larger than the long side of the solution tank 7, a high liquid level alarm 18, a medium level alarm 19 and a low liquid level alarm 20 are arranged in the solution tank 7, and the model of the circulating pump 3 is a south pipeline pump YD series.

The specific using process is as follows: set up high, middle, low liquid level alarm line according to actual production, the solution tank feeds in advance, reports to the police when the liquid level reaches high liquid level, stops the feeding. The evaporation chamber 4 is ventilated, hot air enters from the inlet 11 of the ventilation pipe 1 on the side surface of the evaporation chamber 4 on the bottom layer through the ventilation pipe 1, liquid drops in the air are removed through the demister 2 of each evaporation chamber 4 along an S-shaped curve, and the air is blown out from the outlet 12 of the ventilation pipe on the side surface of the evaporation chamber 4 on the top layer. And (3) opening the circulating pump 3, pumping the material in the solution tank 7 into the material port 15 of the top-layer evaporation chamber, enabling the material to flow into the overflow weir 5 of the top-layer evaporation chamber 4 through the material port 15 of the top-layer evaporation chamber, enabling the material to flow down along the heat and mass exchanger 6 after overflowing the material in the overflow weir 5, flowing down along the heat and mass exchanger 6 after overflowing again, repeating the steps until the material flows to the overflow hole 21 of the bottom-layer evaporation chamber 4, and finally returning the material to the solution tank 7. When hot air passes through the small holes 22 on the heat exchanger 6, the hot air is contacted with the material and takes away moisture in the material, the material is concentrated, the liquid level in the solution tank 7 is displayed in real time by the downcomer 16, when the solution is reduced to the middle liquid level, an alarm is given to remind of stopping feeding, the material needs to be supplemented to the solution tank, and if the liquid level is reduced to the low liquid level, the pump is automatically stopped. During the material evaporative concentration, detect the interior material concentration of solution tank 7 at variable times, the feed rate of the supplementary adjustment amount of wind and material, when detecting to reach required concentration index, can stop circulating pump 3, treat that all materials flow equalize to solution tank 7 in the evaporating chamber 4, clearance solution tank 7, ventilate in the evaporating chamber 4 simultaneously and stop after the certain time, guide plate 17 is on one side of material water conservancy diversion to solution tank 7 because of having inclination in solution tank 7, be convenient for clear up the material. And after the materials are cleaned, feeding again, and then carrying out evaporation concentration on the next batch of materials.

The following is according to the actual production situation to take two-layer evaporating chamber as an example, specifically illustrate the utility model discloses an implementation: setting the alarm line of a high liquid level alarm 18 to be 0.2m away from the top of the solution tank, the alarm line of a middle liquid level alarm 19 to be 0.5m away from the top of the solution tank, and the alarm line of a low liquid level alarm 20 to be 0.8m away from the top of the solution tank in advance; the solution tank feeds materials in advance, and the solution tank gives an alarm when the liquid level reaches a high liquid level and stops feeding. Ventilating an evaporation chamber 4, introducing hot air from an inlet 11 of a ventilation pipe 1 on the side surface of the evaporation chamber 4 at the bottom layer through the ventilation pipe 1, bringing moisture in materials away by contacting the materials on a heat-mass exchanger 6, removing liquid drops in the air through a demister 2, introducing the hot air into an evaporation chamber 4 at the top layer, bringing the moisture in the materials away by contacting the materials when passing through a small hole 22 on the heat-mass exchanger 6, concentrating the materials, and controlling the air speed and the flow rate of the hot air so as to ensure that the materials cannot leak from the small hole 22 or be blown up by the hot air to splash on the heat-mass exchanger 6; the hot air removes liquid drops in the air through the demister 2, and the hot air is finally blown out from an outlet 12 of a ventilation pipe on the side surface of the top layer evaporation chamber 4; opening the circulating pump 3, pumping the material in the solution tank 7 into the material port 15 of the top-layer evaporation chamber, flowing the material into the overflow weir 5 of the top-layer evaporation chamber 4 through the material port 15 of the top-layer evaporation chamber, overflowing the material in the overflow weir 5, flowing down the heat and mass exchanger 6, flowing to the overflow weir 5 of the bottom-layer evaporation chamber 4, overflowing again, flowing down the heat and mass exchanger 6, flowing down the overflow hole 21 of the bottom-layer evaporation chamber 4, and finally returning the material to the solution tank 7; the downcomer 16 displays the liquid level in the solution tank 7 in real time, and gives an alarm when the solution drops to the middle liquid level, so as to remind of stopping feeding, and the material needs to be supplemented to the solution tank, and if the liquid level drops to the low liquid level, the pump is automatically stopped; during the material evaporative concentration, detect the interior material concentration of solution tank 7 at variable times, the feed rate of supplementary adjustment amount of wind and material, when detecting to reach required concentration index, can stop circulating pump 3, the while stops after 4 interior ventilations of evaporating chamber for a certain time, treat that all materials flow to solution tank 7 in the evaporating chamber 4, clearance solution tank 7, guide plate 17 is on one side of material water conservancy diversion to solution tank 7 because of having inclination in the solution tank 7, be convenient for clear up the material. And after the materials are cleaned, feeding again, and then carrying out evaporation concentration on the next batch of materials.

The utility model relates to a novelty, simple structure is ingenious, has broken away from the big drawback of traditional evaporative concentration equipment area, if necessary, can increase a plurality of evaporating chambers, improves the heat exchange efficiency of evaporating chamber under the same condition of inflow and air input, has practiced thrift manufacturing cost greatly, has very high practical value.

To sum up, the utility model discloses reach anticipated effect.

Claims

1. The utility model provides a serial-type low temperature ordinary pressure evaporating chamber, includes ventilation pipe, demister, circulating pump, its characterized in that: the evaporator comprises a bottom plate, partition plates and a top plate, the bottom plate is positioned on the top layer of the solution tank, the partition plates are positioned between two adjacent evaporation chambers, the top plate is positioned at the top of the top layer evaporation chamber, the side surface of the bottom evaporation chamber is provided with a vent pipe inlet, the side surface of the top layer evaporation chamber is provided with a vent pipe outlet, the vent pipe is in an S-shaped curve and connects the evaporation chambers in series, the demister is positioned at the air outlet of the evaporation chambers, the inlet of the circulating pump is connected with the solution tank through a pipeline, the outlet of the circulating pump is connected with the material port of the top layer evaporation chamber through a pipeline, the material port of the top layer evaporation chamber is connected with the top layer overflow weir, the heat exchanger is a porous plate, one end of the heat exchanger is connected with the overflow weir of the evaporation chamber, and the other end of the heat exchanger is connected with the overflow hole on the partition plate at the bottom of the evaporation chamber or the bottom plate of the evaporation chamber, the lower part of the overflow hole is vertically aligned with the overflow weir.

2. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the number of the evaporation chambers is at least 2.

3. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the inclination angle of the heat and mass exchanger is 35-55 degrees.

4. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the distance between the centers of the small holes on the heat and mass exchanger is 2.5cm, and the aperture of each small hole is 0.8-1.2 cm.

5. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the overflow weir is long-strip-shaped, and the sectional side view is J-shaped.

6. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the outside of the solution tank is connected with a downcomer which is a hollow transparent cylinder.

7. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the bottom of the solution tank is provided with a guide plate, the short side of the guide plate is the same as that of the solution tank, and the long side of the guide plate is larger than that of the solution tank.

8. A tandem low temperature atmospheric vaporization chamber as recited in claim 1, wherein: the solution tank is provided with a high liquid level alarm, a medium liquid level alarm and a low liquid level alarm.