CN210340388U

CN210340388U - Contact evaporator

Info

Publication number: CN210340388U
Application number: CN201921027149.3U
Authority: CN
Inventors: 章联兵; 刘维元; 黄长江
Original assignee: Hangzhou Xinji Energy Technology Co ltd
Current assignee: Hangzhou Xinji Energy Technology Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-04-17
Anticipated expiration: 2029-07-03

Abstract

Contact evaporimeter and method thereof belongs to gas-liquid evaporation technical field, the utility model discloses an including water knockout drum, casing, heat transfer mechanism, water supply mechanism and water-collecting mechanism, the water knockout drum is intake and is held and water supply end pipe connection of water supply mechanism, and the inside stack in proper order from top to bottom of casing is provided with multilayer heat transfer mechanism, and the water knockout drum goes out the upside that the water end lies in upside heat transfer mechanism. The utility model discloses an evaporator equipment simple structure, the steam that produces in the evaporation process is directly taken away along with hot-air or hot flue gas, needn't set up exhaust equipment separately, has improved flue gas humidity, has improved the flue gas dust content rate, improves flue gas quality, does benefit to follow-up flue gas treatment process and expandes.

Description

Contact evaporator

Technical Field

The invention belongs to the technical field of gas-liquid evaporation, and particularly relates to a contact type evaporator and a method thereof.

Background

In recent years, with the rapid development of industrial production, environmental pollution is increasingly aggravated, so that the country pays more and more attention to environmental management, emission control of industrial three wastes is more and more strict, emission standards of waste water are higher and higher, and an evaporation concentration system is often used for treating the waste water. The evaporation technology is a thermal separation technology, and mainly carries out solution concentration or solvent recovery and purification according to different volatility characteristics of a solvent and a solute, and is also a pretreatment process of crystallization operation.

The pollutant and the separation of water in sewage waste water of current evaporimeter need collocation installation exhaust apparatus, and simultaneously, evaporation efficiency generally is a fixed value, causes the loss of the energy very easily, increases the treatment cost, and evaporation efficiency is lower simultaneously.

Disclosure of Invention

The present invention aims to overcome the above-mentioned drawbacks and disadvantages and to provide a contact evaporator and a method therefor.

Contact evaporimeter, including water knockout drum, casing, water supply mechanism, water-collecting mechanism and heat transfer mechanism, the water knockout drum includes inlet tube, female pipe and a plurality of branch pipe, the inlet tube is intake end and water supply mechanism's water supply end pipe connection, just inlet tube goes out the water end and is managed the fixed intercommunication setting of end with female, the fixed intercommunication of female pipe water outlet end is provided with a plurality of branch pipes, the inside fixed multilayer heat transfer mechanism that is provided with of casing, a plurality of branch pipes pass inside the outer terminal surface intercommunication casing of casing, just the play water end of a plurality of branch pipes is located upside heat transfer mechanism's upside, just the lower extreme fixedly connected with water-collecting mechanism of casing, wherein, casing one end is provided with the air inlet, and the other end is provided with the gas outlet, the air inlet with the gas outlet all runs through casing and.

Preferably, the water supply mechanism comprises a first water tank and a water pump, a water outlet end pipeline of the first water tank is communicated with the water pump, and a water outlet end of the water pump is fixedly communicated with the upper end of the water separator.

Preferably, the water collecting mechanism comprises a water collector and a second water tank, the water collector is fixedly communicated with the lower end of the shell, and a water outlet end pipeline of the water collector is connected with the second water tank.

Preferably, the heat exchange mechanism comprises a heat exchange plate, a water storage tank and a water drainage tank, wherein the water inlet end of the heat exchange plate is fixedly connected with the water storage tank, and the water outlet end of the heat exchange plate is fixedly connected with the water drainage tank; and surrounding plates are fixedly arranged on the front side and the rear side of the heat exchange plate, and the surrounding plates are connected with the drainage water tank and the water storage water tank.

Preferably, the heat exchange plate is made of a corrosion-resistant steel plate, and the length of the heat exchange plate is 0.5-5M.

Preferably, an S-shaped, linear or triangular diversion water tank is arranged on the waste water flowing surface of the heat exchange plate, and fins for reinforcing heat exchange are arranged at the bottom of the heat exchange plate.

Preferably, the inclination angle between the heat exchange plate and the horizontal plane is 0-45 degrees.

Preferably, the distance between the water outlet end of the upper heat exchange mechanism and the water inlet end of the lower heat exchange mechanism is 100-1500 mm.

Preferably, the height of the coaming in the heat exchange mechanism is 100 mm-500 mm.

Preferably, a plurality of sieve holes are arranged on the bottom surface of the drainage water tank in a penetrating manner, the sieve holes adjacent to each other in the plurality of sieve holes are arranged in a staggered manner, that is, the bottom surface of the drainage water tank is used as a reference surface, the long edge of the drainage water tank is used as a Y axis, the short edge of the drainage water tank is used as an X axis, the centers of the sieve holes along the Y axis are not on the same straight line, and the connecting line of the centers of the sieve holes adjacent to each other in the Y axis has an angle with the Y axis.

The evaporation method of the contact evaporator comprises the following specific steps:

s1, the water supply mechanism feeds the waste water into the shell to contact the heat exchange mechanism, at the moment, hot air or hot flue gas is introduced into the air inlet of the shell, the hot air or hot flue gas and the waste water directly carry out heat exchange, and at the moment, the temperature of the inlet air is 70-150 degrees;

s2, after heat exchange, discharging the waste water after heat exchange through the water collecting mechanism, and simultaneously discharging hot air, hot flue gas and steam generated by heat exchange out of the shell through the air outlet of the shell, wherein the temperature of the discharged air is 70-145 degrees.

Preferably, the evaporation efficiency value of the waste water after heat exchange is 5% -80%, and the evaporation efficiency can be artificially regulated and controlled by controlling the air inflow and the water inflow.

Optimally, the evaporation efficiency is 80 percent

Due to the adoption of the technical scheme, the method has the following beneficial effects:

(1) the waste water directly exchanges heat with the hot air, so that the heat exchange efficiency is improved, and compared with the traditional dividing wall type heat exchanger, the heat exchange efficiency is higher, the structure is simple, and the cleaning operation and the like are more convenient;

(2) the concentrated wastewater is heated by using the waste heat of the flue gas, so that the heat utilization rate is improved, and energy is saved;

(3) the water vapor generated in the evaporation process is directly taken away with the hot air or the hot flue gas, and an exhaust device is not needed to be additionally arranged. The flue gas humidity is improved, the dust content of the flue gas is improved, the flue gas quality is improved, and the expansion of the subsequent flue gas treatment process is facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of a contact evaporator of the present invention;

FIG. 2 is an enlarged partial schematic view of "A" of the present invention;

FIG. 3 is a schematic structural view of a heat exchange mechanism according to the present invention;

FIG. 4 is a schematic cross-sectional view of a heat exchange panel according to the present invention;

FIG. 5 is a schematic view of the construction of the water separator of the present invention;

FIG. 6 is a schematic view showing the structure of a water collector in the present invention

In the figure, 1-a drainage water tank, 2-a heat exchange plate, 3-a coaming plate, 4-a water storage water tank, 5-a sieve mesh, 6-a first water tank, 7-a water pump, 8-a water collector, 9-a second water tank, 10-a fin, 11-a water separator, 12-an air outlet, 13-an air inlet, 14-a heat exchange mechanism, 15-a shell, α -an inclination angle and D-an interval distance.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The contact evaporator shown in fig. 1-6 comprises a water separator 11, a shell 15, a heat exchange mechanism 14, a water supply mechanism and a water collecting mechanism;

the water separator 11 comprises an inlet pipe, a female pipe and a plurality of branch pipes, the inlet end of the inlet pipe is connected with the water supply end of the water supply mechanism through a pipeline, the outlet end of the inlet pipe and the inlet end of the female pipe are fixedly communicated, the outlet end of the female pipe is fixedly communicated with a plurality of branch pipes, a plurality of layers of heat exchange mechanisms 14 are sequentially stacked inside the shell 15 from top to bottom, the plurality of branch pipes penetrate through the outer end face of the shell 15 and are communicated with the inside of the shell 15, one end of the shell 15 is provided with an air inlet 13, the other end of the shell is provided with an air outlet 12, the air inlet 13 and the air outlet 12 all penetrate through the shell 15 and are communicated with the outside, the lower end of the shell 15 is fixedly connected with a water collecting mechanism, waste water is discharged to the heat exchange.

The heat exchange mechanism 14 comprises a heat exchange plate 2, a water storage tank 4 and a water drainage tank 1, wherein the water inlet end of the heat exchange plate 2 is fixedly connected with the water storage tank 4, and the water outlet end of the heat exchange plate is fixedly connected with the water drainage tank 1; and the both sides all are fixed to be provided with bounding wall 3 around heat transfer board 2, and bounding wall 3, heat transfer board 2, drainage basin 1 and retaining basin 4 enclose jointly and establish a heat transfer space, wherein, the height of bounding wall 3 is 100mm ~ 500mm, and its effect is, avoids waste water to reveal and the interference immunity of reinforcing heat transfer in-process through bounding wall 3, and waste water does not take place to reveal promptly, has sufficient heat transfer time at the heat transfer in-process to the effectual heat transfer that carries on.

Further, the water supply mechanism comprises a first water tank 6 and a water pump 7, a water outlet end pipeline of the first water tank 6 is connected with the water pump 7, a water separator 11 is fixedly connected with a water outlet end of the water pump 7, the water separator 11 is fixedly communicated with the upper end of the shell 15, and the water supply mechanism is used for providing a water source.

Further, the water collecting mechanism comprises a water collector 8 and a second water tank 9, the lower end of the shell 15 is fixedly communicated with the water collector 8, a water outlet end pipeline of the water collector 8 is connected with the second water tank 9, and the water collecting mechanism has the function of collecting waste water which is not evaporated for subsequent treatment.

Further, the heat exchange plate 2 is made of a steel plate made of corrosion-resistant materials, the length of the heat exchange plate is 0.5-5M, the inclination angle α between the heat exchange plate and the horizontal plane is 0-45 degrees, an S-shaped, linear or triangular diversion water channel is arranged on the surface of wastewater flowing through the heat exchange plate 2, fins 10 for strengthening heat exchange are arranged at the bottom of the heat exchange plate 2, and the heat exchange plate has the effects of ensuring that liquid smoothly flows along the heat exchange plate and increasing the contact area with hot air or hot flue gas and strengthening the heat exchange effect.

Further, the bottom surface of drainage basin 4 runs through and is provided with a plurality of sieve mesh 5, the crisscross setting of sieve mesh that a plurality of sieve mesh 5 is adjacent each other, use drainage basin 4 bottom surface as the reference surface promptly, use the long limit of drainage basin 4 to be the Y axle, the minor face is the X axle, a plurality of sieve mesh 5 center along Y axle direction is not on same straight line, and the line at the sieve mesh 5 center that a plurality of sieve mesh 5 along Y axle direction is adjacent each other all has the angle with the Y axle, and its effect is, be convenient for with waste water flow next heat exchange mechanism 14, reinforcing heat transfer effect.

Further, the distance D between the water outlet end of the upper heat exchange mechanism 14 and the water inlet end of the lower heat exchange mechanism 14 is 100 mm-1500 mm.

In addition, the arrows shown in fig. 1 are the flow direction of the hot air or the hot flue gas.

The working principle of the invention is as follows: waste water in the first water tank 6 is discharged into the shell 15 through the water separator 11 by the water pump 7, firstly, the waste water is injected into the water storage tank 4 at the top, reaches the water discharge tank 1 through the heat exchange plate 2 which is obliquely arranged, and flows into the next heat exchange mechanism 14 through the sieve pores 5, wherein the two sides of the heat exchange plate 2 are fixedly provided with the coamings 3 to prevent the waste water from leaking out when flowing, in addition, the bottom of the heat exchange plate 2 is provided with the fins 10 to enhance heat exchange and improve heat exchange efficiency, meanwhile, when the waste water enters the heat exchange mechanism 14, hot air or hot flue gas with the temperature of 70-150 degrees is introduced into the air inlet pipeline, after the heat exchange is finished, the hot air or hot flue gas and generated steam are discharged out of the shell 15 through the air outlet 12, and simultaneously, the waste water which is not evaporated is discharged into the second underwater water tank 9 through the.

The invention has the beneficial effects that:

(1) a plurality of obliquely arranged heat exchange mechanisms 14 are arranged to form a multi-slope structure, so that the heat exchange effect is enhanced;

(2) the waste water is directly contacted with hot air or hot flue gas, so that full heat exchange, evaporation and concentration are facilitated, and the evaporation efficiency is enhanced;

(3) the evaporator has simple structure, the water vapor generated in the evaporation process is directly taken away along with the hot air or the hot flue gas, and no additional steam exhaust equipment is needed, so that the flue gas humidity is improved, the dust content of the flue gas is improved, the flue gas quality is improved, and the expansion of the subsequent flue gas treatment process is facilitated.

s1, the water supply mechanism feeds the wastewater into the shell 15 to contact the heat exchange mechanism 14, and at the moment, hot air or hot flue gas is introduced into the air inlet 13 of the shell 15 to directly exchange heat between the hot air or hot flue gas and the wastewater;

and S2, after heat exchange is finished, discharging the waste water after heat exchange through the water collecting mechanism, and simultaneously discharging the steam generated by heat exchange between the hot air or the hot flue gas and the waste water out of the shell 15 through the air outlet 12 of the shell 15.

Furthermore, the temperature of the introduced hot air or hot flue gas during air inlet is 70-150 degrees, and the temperature during air outlet is 70-145 degrees.

Further, after the waste water is subjected to heat exchange, the evaporation efficiency is 5% -80% in the period, and the evaporation efficiency can be artificially regulated and controlled by adjusting the air inflow and the water inflow, and is optimal, and the evaporation efficiency is 80%.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "multiple layers", "several layers" mean two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The present invention has been described in terms of embodiments, and several variations and modifications can be made to the device without departing from the principles of the present invention. It should be noted that all the technical solutions obtained by means of equivalent substitution or equivalent transformation, etc., fall within the protection scope of the present invention.

Claims

1. The contact evaporator comprises a water distributor (11), a shell (15), a heat exchange mechanism (14), a water supply mechanism and a water collection mechanism, and is characterized in that the water distributor (11) comprises a water inlet pipe, a female pipe and a plurality of branch pipes, the water inlet end of the water inlet pipe is connected with the water supply end of the water supply mechanism through a pipeline, the water outlet end of the water inlet pipe is fixedly communicated with the water inlet end of the female pipe, the water outlet end of the female pipe is fixedly communicated with the water outlet end of the female pipe, one end of the shell (15) is communicated with a gas inlet (13), the other end of the shell (15) is communicated with a gas outlet (12), the shell (15) is internally provided with a plurality of layers of heat exchange mechanisms (14) in an up-down overlapped mode in sequence, the plurality of branch pipes penetrate through the outer end face of the shell (15) and are communicated with the interior of the shell (15), the, the heat exchange mechanism comprises a heat exchange plate (2), a water storage tank (4) and a water drainage tank (1), wherein the water inlet end of the heat exchange plate (2) is fixedly connected with the water storage tank (4), and the water outlet end of the heat exchange plate is fixedly connected with the water drainage tank (1); and surrounding plates (3) are fixedly arranged on the front side and the rear side of the heat exchange plate (2), and the surrounding plates (3) are connected with the drainage water tank (1) and the water storage water tank (4).

2. A contact evaporator according to claim 1, wherein the water supply mechanism comprises a first water tank (6) and a water pump (7), the water outlet end of the first water tank (6) is connected with the water pump (7) through a pipeline, and the water outlet end of the water pump (7) is fixedly communicated with the water inlet end of the water inlet pipe of the water separator (11).

3. A contact evaporator according to claim 1, wherein the water collecting mechanism comprises a water collector (8) and a second water tank (9), the lower end of the shell (15) is fixedly communicated with the water collector (8), and the second water tank (9) is connected with a water outlet end pipeline of the water collector (8).

4. A contact evaporator according to claim 1, characterized in that the heat exchange plate (2) is made of corrosion-resistant steel plate, the waste water flowing surface is provided with S-shaped, linear or triangular diversion water grooves, the bottom of the heat exchange plate (2) is provided with heat exchange enhancing fins (10), the length of the heat exchange plate (2) is 0.5M-5M, and the heat exchange plate is arranged at an inclination angle (α) of 0-45 ° with the horizontal plane.

5. Contact evaporator according to claim 1, characterized in that the bottom surface of the draining sump (1) is provided with a plurality of screening holes (5) therethrough, the screening holes (5) adjacent to each other of the plurality of screening holes (5) being staggered.

6. A contact evaporator according to claim 1, wherein the distance (D) between the water outlet end of the upper heat exchange means (14) and the water inlet end of the lower heat exchange means (14) is 100 mm-1500 mm, and the height of the enclosure plate (3) in the heat exchange means is 100 mm-500 mm.

7. A contact evaporator according to claim 1, characterised in that the inlet opening (13) is fed with hot air or hot flue gas, which is discharged through the outlet opening (12), and the temperature of the fed hot air or hot flue gas is between 70 ° and 150 ° when it is fed in and between 70 ° and 145 ° when it is discharged.