CN217756940U

CN217756940U - Combined heat supply evaporation equipment

Info

Publication number: CN217756940U
Application number: CN202221559089.1U
Authority: CN
Inventors: 路建伟; 刘威; 汪慧星
Original assignee: Kunshan Wsd Environmental Protection Equipment Co ltd
Current assignee: Kunshan Wsd Environmental Protection Equipment Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-08
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a combination heat supply evaporation equipment, it includes: an evaporator for evaporating the waste liquid; the first heat supply device comprises a vapor compressor, the vapor compressor is connected with the evaporator to compress secondary vapor generated by evaporating the waste liquid, and the compressed secondary vapor is used for supplying heat to the evaporator; the first condensing device comprises a first heat exchanger and a first water tank and is used for condensing the secondary steam after heat supply; the second heating device is used for providing high-temperature steam for the evaporator; the second condensing device comprises a second heat exchanger and a second water tank and is used for condensing secondary steam generated by evaporating the waste liquid; and the vacuumizing device is used for decompressing the evaporator. The utility model discloses a set up two kinds of heating methods and condensation mode, can select to heat and the condensation operation with which kind of mode according to the actual demand, improved the suitability of equipment.

Description

Combined heat supply evaporation equipment

Technical Field

The utility model relates to a waste water evaporation treatment technical field especially relates to a combination heat supply evaporation equipment.

Background

At present, the evaporation process is a main measure for treating and recycling the waste liquid, the treatment method and the treatment process are widely applied in modern industrial production, and the purpose is to basically remove moisture in the waste liquid to form distilled water and improve the concentration of the waste liquid so as to meet the requirement of subsequent treatment. In the evaporation process, the common heat supply mode is that equipment is connected into a municipal steam supply pipeline, and waste liquid is heated and evaporated through external steam. However, in some areas where external municipal steam is not temporarily connected, or where the installation site cannot introduce external steam lines, the use of such equipment is limited.

Therefore, it is necessary to design a combined heating and evaporating apparatus to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compromise combination heat supply evaporating equipment of different heat supply demands.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a combination heating and evaporating apparatus, comprising:

an evaporator for evaporating the waste liquid;

the first heat supply device comprises a vapor compressor, the vapor compressor is connected with the evaporator so as to compress secondary vapor generated by evaporating waste liquid, and the compressed secondary vapor is used for supplying heat to the evaporator;

the first condensing device comprises a first heat exchanger and a first water tank and is used for condensing the secondary steam after heat supply;

the second heating device is used for providing high-temperature steam for the evaporator;

the second condensing device comprises a second heat exchanger and a second water tank and is used for condensing secondary steam generated by evaporating the waste liquid;

and the vacuumizing device is used for decompressing the evaporator.

As a further improved technical scheme of the utility model, the evaporimeter includes the casing, locates agitating unit, the at least part cover that are used for stirring the waste liquid in the casing the insulating layer of casing, the insulating layer with form the steam clearance that supplies the steam circulation between the casing.

As a further improved technical scheme of the present invention, an air inlet of the vapor compressor is connected to a vapor outlet of the casing, and an air outlet of the vapor compressor is connected to a vapor gap; the first water tank comprises a heating device for generating initial steam, the first water tank being connected to an air inlet of the steam compressor.

As the utility model discloses further modified technical scheme, first water pitcher through first heat exchanger with steam gap connects, be equipped with the proportional control valve between first heat exchanger and the first water pitcher.

As the utility model discloses further modified technical scheme still includes that the waste liquid goes into the pipe, the waste liquid goes into the pipe and passes through first heat exchanger is connected with the casing to the heat that utilizes steam condensate water preheats the waste liquid.

As a further improved technical scheme of the utility model, still be equipped with steam purification device on the steam outlet of casing, first water pitcher passes through steam purification device with vapor compressor connects.

As a further improved technical proposal of the utility model, the steam purification device is a spiral separator which is arranged above the evaporator.

As the utility model discloses further modified technical scheme, second heating device includes that steam goes into the pipe, locates filter and relief pressure valve on steam goes into the pipe, steam go into the pipe with steam gap connects.

As a further improved technical scheme of the utility model, evacuating device reaches including circulation connection's ejector, centrifugal pump in proper order the second water pitcher, the ejector passes through the second heat exchanger is connected with the evaporimeter.

As a further improved technical scheme of the utility model, first heat exchanger is plate heat exchanger, heating device is electric heater

According to the technical scheme provided by the utility model, the utility model discloses a set up two kinds of heating methods and condensation mode, can select to heat and the condensation operation with what kind of mode according to the actual demand, integrate two sets of vaporization systems on same set of equipment, improved the suitability of equipment.

Drawings

Fig. 1 is a schematic view of a combined heating and evaporating apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Please refer to fig. 1, which shows a combined heating and evaporating apparatus, comprising: the system comprises an evaporator 10, a waste liquid supply device, a first heat supply device 20, a first condensation device 30, a second heat supply device 50, a second condensation device 60 and a vacuum pumping device 70.

The evaporator 10 is used for evaporating waste liquid, the evaporator 10 includes a housing 11 and a heat insulation layer 13 at least partially covering the housing 11, an evaporation chamber is formed in the housing 11, one end of the evaporation chamber is provided with a waste liquid inlet (not numbered) for introducing waste liquid, the other end of the evaporation chamber is provided with a discharge outlet for discharging evaporation residues, and the upper part of the housing 11 is further provided with a steam outlet 111. The heat insulating layer 13 at least partially covers the shell 11, and a steam gap for steam to flow through is formed between the heat insulating layer 13 and the shell 11. In this embodiment, the heat insulating layer 13 is disposed at the lower portion of the housing 11, and when the waste liquid is introduced into the housing 11, the heat insulating layer 13 may cover a portion of the housing 11 corresponding to the waste liquid to heat the waste liquid. The insulating layer 13 is preferably a miller plate.

The evaporator 10 further comprises stirring means 12 provided in the housing 11 for stirring the waste liquid. The stirring device 12 is driven by a speed reducer 15. Above the steam outlet 111, a steam cleaning device 3 is arranged to clean the secondary steam, the steam cleaning device 3 preferably being a spiral separator.

The waste liquid supply device is used for supplying waste liquid to the evaporator 10 and comprises a waste liquid inlet pipe 1 and a metering tank 2 arranged on the waste liquid inlet pipe 1.

The first heating device 20 includes a vapor compressor 21. The vapor compressor 21 is used for compressing the secondary vapor generated by evaporating the waste liquid to generate high-temperature vapor, and the high-temperature vapor is introduced into the vapor gap to heat the waste liquid in the shell 11. Specifically, the vapor compressor 21 has an inlet port 21a and an outlet port 21b. The air inlet 21a of the vapor compressor 21 is connected to the vapor outlet 111 of the housing 11. So set up, initial steam is at first through the purification of vapor purification device 3 and then is in vapor compressor 21, prevents to cause pollution and corruption to vapor compressor 21. The air outlet 21b of the vapor compressor 21 is connected to the vapor gap to introduce high-temperature vapor into the vapor gap.

The high temperature steam in the steam gap exchanges heat with the waste liquid in the shell 11 and then is introduced into the first condensing device 30 for condensation. Specifically, the first condensing unit 30 includes a first heat exchanger 31 and a first water tank 32, and the first heat exchanger 31 is connected to the steam gap. First heat exchanger 31 still can be used to preheat the waste liquid, and waste liquid admission pipe 1 is connected with first heat exchanger 31, carries out the heat exchange through steam condensate water and waste liquid, realizes the purpose that the waste liquid preheats and the cooling of steam condensate water simultaneously. In this embodiment, the first heat exchanger 31 is a plate heat exchanger, and the specific structure and heat exchange manner of the first heat exchanger are the same as those of the conventional plate heat exchanger, which is not described herein again. Of course, the first heat exchanger can also be provided as other heat exchangers, such as a shell-and-tube heat exchanger.

In the utility model discloses in, on the one hand, first water pitcher 32 is used for the steam that produces and carries initial steam to vapor compressor 21 to start the evaporation process, it is specific, first water pitcher 32 is connected with vapor compressor 21. A heating device 6 is arranged in the first water tank 32, the heating device 6 being adapted to heat the water in the first water tank 32 and to generate initial steam, the heating device 6 preferably being an electric heater. Preferably, the first water tank 32 is connected to the vapor compressor through the vapor purification device 3. On the other hand, the first water tank 32 is used to collect steam condensate. The first water tank 32 is connected with the steam gap, a first heat exchanger 31 is further arranged between the first water tank 32 and the steam gap, and steam condensate flowing out of the steam gap enters the first water tank 32 to be collected after being further cooled by the first heat exchanger 31.

A proportional control valve 5 is also provided between the first heat exchanger 31 and the first water tank 32. The proportional control valve 5 is used to adjust the pressure of the vapor in the vapor gap between the outlet port 21b of the vapor compressor 21 and the evaporator 10. On the one hand, the proportional control valve 5 controls the vapor compressor 21 to provide high-temperature and high-pressure vapor with stable state, on the other hand, the proportional control valve 5 indirectly controls the pressure of the air inlet 21a of the vapor compressor 21 by controlling the vapor pressure of the air outlet 21b of the vapor compressor 21, so that the negative pressure in the shell 11 is in stable state, and the arrangement improves the stability of the operation of the whole equipment.

In this embodiment, the first water tank 32 further has a water outlet 413 and an air outlet 414, the water outlet 413 is disposed at the bottom of the first water tank 32, and the water outlet 413 is connected to a drain pipe for draining the excess water in the first water tank 32. An exhaust port 414 is provided at the top of the first water tank 32, and an automatic exhaust valve is provided above the exhaust port 414 to exhaust the exhaust gas collected in the first water tank 32.

The second heating apparatus 50 includes a steam inlet pipe 51, a filter 52 provided on the steam inlet pipe 51, and a steam inlet valve 53. The second heat supplying means 50 is adapted to be connected to an external steam heat source for supplying steam to the steam gap. After the steam clearance heat exchange, the steam condensate water is introduced into the steam condensing tank 4 for collection.

The second condensation device 60 comprises a second heat exchanger 61 and a second water tank 62. The second heat exchanger 61 is connected to the steam outlet 111 for condensing the secondary steam generated by the evaporation. The vacuum extractor 70 is used for decompressing the inside of the casing 11, the vacuum extractor 70 includes an ejector 71, a centrifugal water pump 72, and a second water tank 62, which are sequentially and circularly connected, and the ejector 71 is connected with the evaporator 10 through a second heat exchanger 61. Preferably, a third heat exchanger 73 for cooling the steam condensate is further disposed in the second water tank 62, so that the vacuum-pumping effect of the vacuum-pumping device 70 is improved. Preferably, the third heat exchanger is a tubular heat exchanger.

The combined heat supply and evaporation equipment is also provided with a cleaning channel, the cleaning channel is connected with the first heat exchanger 31, and the first heat exchanger 31 can be cleaned while the evaporator 10 is cleaned. A defoaming device 15 is additionally provided to introduce a defoaming agent into the evaporator 10.

In operation, the first heating device 20 or the second heating device 50 is selected to supply heat according to actual needs. If the plant cannot provide external steam source for heating, the first heating device 20 and the first condensing device 30 can be selected to be used, and the second heating device 50 and the second condensing device 60 are closed. Firstly, a certain amount of water is contained in the first water tank 32, the heating device 6 is started to generate initial steam, the initial steam is sucked and compressed by the steam compressor 21 to generate high-temperature steam, and the high-temperature steam is introduced into a steam gap; meanwhile, the steam compressor 21 vacuumizes the inside of the shell 11, when the vacuum degree in the shell 11 reaches a preset value, the waste liquid inlet pipe 1 is opened, the waste liquid is pumped into the shell 11 and exchanges heat with high-temperature steam to generate secondary steam, and at the moment, the heating device is closed; the secondary steam is sucked and compressed by the steam compressor 21 to generate high-temperature steam, and the high-temperature steam is introduced into the steam gap for heat exchange. In this process, on the one hand, the steam recompression and to steam clearance in heat supply, effectively retrieve the steam waste heat, save partial energy, on the other hand, in the evaporation process, steam compressor 21 continuously follows casing 11 through the pipeline and extracts steam in, consequently can form the negative pressure state in the casing 11, so set up, has reduced the required temperature of waste liquid evaporation, and then has improved evaporation efficiency.

If the location of the equipment can be externally connected with a steam source for supplying heat, a second heat supply device can be selected, and the first heat supply device and the first condensing device are closed. Firstly, the ejector 71 and the centrifugal water pump 72 are started to generate negative pressure in the shell 11, and when the vacuum degree in the shell 11 reaches a preset value, the waste liquid inlet pipe 1 is opened, and waste liquid is pumped into the shell 11; the steam inlet pipe 51 is opened to provide steam to the steam gap of the evaporator 10, the steam exchanges heat with the waste liquid to generate secondary steam, then the secondary steam is pumped out of the shell 11 under the action of the ejector 71 and the centrifugal water pump 72, and is condensed by the second heat exchanger to form steam condensate water, and the steam condensate water further enters the second water tank 62 to be collected.

To sum up, the utility model discloses a set up two kinds of heating methods and condensation mode, can select to heat and the condensation operation with which kind of mode according to the actual demand, be equivalent to with two sets of vaporization systems integration on same set of equipment, improved the suitability of equipment. Two kinds of heat supply modes share the waste liquid supply device, the evaporator, the steam purification device and the like, the equipment practicability is improved, meanwhile, the complexity and the occupied area of the equipment are reduced as much as possible, and the manufacturing cost is saved. In addition, in the first heat supply mode, the first water tank 32 can provide initial steam for the steam compressor, secondary steam condensate water can be collected, the evaporation generation device and the condensate water tank are ingeniously integrated, the additional arrangement of the steam generation device is not needed, the floor area of equipment is reduced, and the manufacturing cost and the using cost are saved.

The above embodiments are only used to illustrate the present invention, but not to limit the technical solutions of the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, and although the present specification has made the detailed description of the present invention with reference to the above embodiments, the technical personnel in the technical field should understand that the technical personnel in the technical field can still make modifications or equivalent substitutions to the present invention, and all technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered in the scope of the claims of the present invention.

Claims

1. A combination heating and evaporating apparatus, comprising:

an evaporator for evaporating the waste liquid;

and the vacuumizing device is used for decompressing the evaporator.

2. A combined heat-supplying vaporization apparatus according to claim 1, wherein: the evaporator comprises a shell, a stirring device arranged in the shell and used for stirring waste liquid, and a heat insulation layer at least partially covering the shell, wherein a steam gap for steam circulation is formed between the heat insulation layer and the shell.

3. A combined heat-supplying vaporization apparatus according to claim 2, wherein: the air inlet of the steam compressor is connected with the steam outlet of the shell, and the air outlet of the steam compressor is connected with the steam gap; the first water tank comprises a heating device for generating initial steam, the first water tank being connected to an air inlet of the steam compressor.

4. A combined heat-supplying vaporization apparatus according to claim 2, wherein: the first water tank is connected with the steam gap through a first heat exchanger, and a proportional control valve is arranged between the first heat exchanger and the first water tank.

5. A combined-heat-supplying evaporation apparatus according to claim 2, wherein: still include the waste liquid and go into the pipe, the waste liquid is gone into the pipe and is passed through first heat exchanger is connected with the casing to utilize the heat of steam condensate water to preheat the waste liquid.

6. A combined heat-supplying vaporization apparatus according to claim 2, wherein: still be equipped with steam purification device on the steam outlet of casing, first water pitcher passes through steam purification device with vapor compressor is connected.

7. A combined-heat-supplying evaporation apparatus according to claim 6, in which: the steam purification device is a spiral separator which is arranged above the evaporator.

8. A combined heat-supplying vaporization apparatus according to claim 2, wherein: the second heat supply device comprises a steam inlet pipe, a filter and a pressure reducing valve, wherein the filter and the pressure reducing valve are arranged on the steam inlet pipe, and the steam inlet pipe is in clearance connection with the steam.

9. A combined-heat-supplying evaporation apparatus according to claim 1, wherein: the vacuum pumping device comprises an ejector, a centrifugal water pump and the second water tank which are sequentially and circularly connected, and the ejector is connected with the evaporator through the second heat exchanger.

10. A combined heat-supplying vaporization apparatus according to claim 3, wherein: the first heat exchanger is a plate heat exchanger, and the heating device is an electric heater.