CN209763836U - heat exchange device applied to wastewater treatment - Google Patents
heat exchange device applied to wastewater treatment Download PDFInfo
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- CN209763836U CN209763836U CN201920521068.2U CN201920521068U CN209763836U CN 209763836 U CN209763836 U CN 209763836U CN 201920521068 U CN201920521068 U CN 201920521068U CN 209763836 U CN209763836 U CN 209763836U
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Abstract
The utility model relates to a be applied to waste water treatment's heat transfer device, including one-level flash vessel and second grade flash vessel, the top or the below correspondence of one-level flash vessel are equipped with the one-level blender, the top or the below correspondence of second grade flash vessel are equipped with the second grade blender, the entry intercommunication of one-level sprayer and one-level blender is passed through in the export of one-level flash vessel, the entry intercommunication of second grade sprayer and second grade blender is passed through in the export of second grade flash vessel, I intercommunication one-level sprayer of waste water pump is passed through in the export of second grade blender, the entry of II intercommunication second grade flash vessel of waste water pump in the export of one-level flash vessel, the second grade flash vessel, vacuum pump is connected respectively through the pipeline to the. The utility model provides a waste water treatment heat transfer device adopts the combination of multistage water ejector and multistage flash vessel, can realize the heat transfer to high rigidity waste water, and heat exchange efficiency is high, and the operation is stable.
Description
Technical Field
the utility model relates to a heat exchange technology field especially relates to a be applied to waste water treatment's heat transfer device.
Background
with the continuous strengthening and implementation of national and local environmental protection policy and regulations, the treatment device for waste water, waste gas and solid waste is widely applied to various fields of production and life of national economy.
Coal is the mineral resource with the largest reserve and the widest distribution in China, so that the proportion of basic chemical products taking coal as a raw material in China reaches more than 70 percent, and the investment and operation and maintenance cost of a waste water treatment device in the three-waste treatment of coal chemical enterprises account for 85 to 90 percent.
The treatment process of the coal gasification wastewater is greatly different due to different gasification processes. The waste water treatment process of the crushed coal fixed bed gasification is the most complex, and the coal water slurry and the dry powder coal gasification do not contain phenolic substances but harmful substances such as COD, ammonia nitrogen, sulfide, cyanide, SS and the like because the gasification temperature reaches above 1300 ℃. Wherein ammonia nitrogen is a nutrient element of nitrogen fertilizer, and is discharged into a water body to cause eutrophication of the water body, which causes overgrowth of microorganisms in the water body, oxygen deficiency of the water body, odor generation and the like; cyanide belongs to a highly toxic substance and can cause central nervous poisoning, resulting in paralysis and asphyxia; after being discharged into water, the wastewater also has toxic action on water organisms, and can cause fish death and the like. Moreover, when the content of ammonia nitrogen in the wastewater is more than 150mg/l, the stable operation of the subsequent biochemical devices can be influenced.
When the conventional dividing wall type heat exchange equipment is used for treating high-hardness and high-alkalinity coal gasification wastewater, the equipment and pipelines are easy to block, and the stable operation of the device is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above insufficiency of the prior art, the utility model provides a be applied to waste water treatment's heat transfer device, this heat transfer device can realize the high-efficient heat transfer to high rigidity waste water, and the device operation is stable.
The invention is realized by the following technical scheme:
The utility model provides a be applied to waste water treatment's heat transfer device, includes one-level flash vessel and second grade flash vessel, the top or the below correspondence of one-level flash vessel are equipped with the one-level blender, the top or the below correspondence of second grade flash vessel are equipped with the second grade blender, the export of one-level flash vessel passes through the entry intercommunication of one-level sprayer and one-level blender, the export of second grade flash vessel passes through the entry intercommunication of second grade sprayer and second grade blender, I intercommunication one-level sprayer of waste water pump is passed through in the export of second grade blender, II intercommunication entry of second grade flash vessel of waste water pump in the export of one-level flash vessel, vacuum pump, waste water pump III are connected respectively through the pipeline to second grade flash vessel, one-level flash vessel.
Further, the primary flash evaporator and the primary mixer are two relatively independent cylindrical devices.
Further, the secondary flash evaporator and the secondary mixer are two relatively independent cylindrical devices.
Furthermore, the first-stage flash evaporator and the first-stage mixer are integrally formed cylindrical equipment, and the first-stage flash evaporator and the first-stage mixer are separated by adopting end sockets.
Further, the secondary flash evaporator and the secondary mixer are integrally formed cylindrical equipment, and the secondary flash evaporator and the secondary mixer are separated by adopting end sockets.
Compared with the prior art, the beneficial effects of the utility model reside in that:
The heat exchange device applied to wastewater treatment of the utility model adopts the combination of multi-stage injection and multi-stage flash evaporation, so that the wastewater to be treated can be cooled/heated to the required temperature, and the heat exchange efficiency is remarkably improved; the secondary flash evaporator is connected with a vacuum pump so as to ensure that the effective vacuum degree of the device is ensured and the system is more stable when the operation effect of the ejector is not ideal; the flash evaporator and the ejector in the same stage are integrally arranged, so that the occupied area can be effectively saved, the length of a pipeline is reduced, the investment of the device is saved, and the structure is simple; the flash evaporator and the ejector in the same stage are separately and independently arranged, so that the use is more convenient, and the maintenance is easy; to sum up, the fine problem of having solved current heat transfer device and blockking up pipeline and equipment when handling high rigidity waste water of this application for waste water treatment's heat transfer device, heat exchange efficiency is high, and the operation effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a heat exchange device applied to wastewater treatment of the present invention.
In the figure:
1. A vacuum pump; 2. a wastewater pump III; 3. a primary flash evaporator; 4. a first-stage mixer; 5. a primary ejector; 6. a waste water pump I; 7. a waste water pump II; 8. a secondary flash evaporator; 9. a secondary mixer; 10. a secondary ejector.
Detailed Description
The following examples are presented to illustrate certain embodiments of the invention and should not be construed as limiting the scope of the invention. The present disclosure may be modified from materials, methods, and reaction conditions at the same time, and all such modifications are intended to be within the spirit and scope of the present disclosure.
The heat exchange device applied to wastewater treatment as shown in figure 1 comprises a primary flash evaporator 3 and a secondary flash evaporator 8, a primary mixer 4 is correspondingly arranged above or below the primary flash evaporator 3, a secondary mixer 9 is correspondingly arranged above or below the secondary flash evaporator 8, the outlet of the primary flash evaporator 3 is communicated with the inlet of a primary mixer 4 through a primary ejector 5, the outlet of the secondary flash vessel 8 communicates with the inlet of a secondary mixer 9 via a secondary ejector 10, the outlet of the secondary mixer 9 is communicated with the primary ejector 5 through a waste water pump I6, the outlet of the primary flash evaporator 3 is communicated with the inlet of the secondary flash evaporator 8 through a waste water pump II 7, the secondary flash evaporator 8 and the primary flash evaporator 3 are respectively connected with the vacuum pump 1 and the wastewater pump III 2 through pipelines, and the vacuum pump 1 is designed to maintain the stable vacuum degree of the system.
In this embodiment, one-level flash vessel 3 and one-level mixer 4 are two relatively independent drum equipment, or one-level flash vessel 3 and one-level mixer 4 are integrated into one piece's drum equipment, work as one-level flash vessel 3 and one-level mixer 4 integrated into one piece, adopt the head to separate between one-level flash vessel 3 and the one-level mixer 4, one-level flash vessel 3 and one-level mixer 4 integrated into one piece can save occupation of land effectively, reduce pipeline length, the economizer investment.
In this embodiment, second grade flash vessel 8 and second grade blender 9 are two relatively independent drum equipment, or second grade flash vessel 8 and second grade blender 9 are integrated into one piece's drum equipment, and when second grade flash vessel 8 and second grade blender 9 were integrated into one piece, adopt the head to separate between second grade flash vessel 8 and the second grade blender 9, and second grade flash vessel 8 and second grade blender 9 integrated into one piece can save the occupation of land effectively, reduce pipeline length, the saving device investment.
According to the specific requirements, the skilled person can change the secondary flash evaporation and the secondary water injection of the waste water treatment heat exchange device into three-stage, four-stage and multi-stage.
For the convenience of further understanding the above technical scheme, the detailed description will be given on the specific working process (A is wastewater to be treated, B is high-temperature purified wastewater after primary treatment, C is low-temperature purified wastewater after primary treatment, and D is wastewater to be treated after temperature rise):
S1: the high-temperature purified wastewater B (105-120 ℃) after primary treatment enters the middle part of a primary flash evaporator 3 through a wastewater pump III 2, the operating pressure of the primary flash evaporator 3 is 50-90kPa, the operating temperature is 80-95 ℃, negative pressure steam of 80-95 ℃ is generated and then flows out of the upper part of the primary flash evaporator 3, the negative pressure steam enters a primary mixer 4 through a primary ejector 5 through wastewater jet pumping from a wastewater pump I6, and the wastewater D after the temperature is raised to 80-95 ℃ is sent to a subsequent wastewater treatment unit (such as steam stripping);
S2: the primary purified wastewater (80-95 ℃) from the bottom of the primary flash evaporator 3 enters the middle part of a secondary flash evaporator 8 through a wastewater pump II 7, the operating pressure of the secondary flash evaporator 8 is 20-30kPa, the operating temperature is 60-69 ℃, negative pressure steam of 60-69 ℃ is generated and then comes out from the upper part of the secondary flash evaporator 8, the wastewater A (40 ℃) to be treated is injected and pumped into a secondary mixer 9 through a secondary ejector 10, and the wastewater with the temperature raised to 60-69 ℃ is sent to a primary ejector 5 and a primary mixer 4 through a wastewater pump I6;
s3: the primary purified wastewater C (60-69 ℃) from the bottom of the secondary flash evaporator 8 is cooled and then sent to the subsequent biochemical treatment.
The temperature of the wastewater A to be treated is increased from 40 ℃ to 80-95 ℃ in the operation process, the temperature of the purified wastewater B after primary treatment is decreased from 105-120 ℃ to 60-69 ℃, so that the high-efficiency heat exchange of the high-hardness coal gasification wastewater is realized, the operation is convenient, and the equipment runs stably.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. The heat exchange device applied to wastewater treatment is characterized by comprising a primary flash evaporator (3) and a secondary flash evaporator (8), wherein a primary mixer (4) is correspondingly arranged above or below the primary flash evaporator (3), a secondary mixer (9) is correspondingly arranged above or below the secondary flash evaporator (8), an outlet of the primary flash evaporator (3) is communicated with an inlet of the primary mixer (4) through a primary ejector (5), an outlet of the secondary flash evaporator (8) is communicated with an inlet of the secondary mixer (9) through a secondary ejector (10), an outlet of the secondary mixer (9) is communicated with the primary ejector (5) through a wastewater pump I (6), an outlet of the primary flash evaporator (3) is communicated with an inlet of the secondary flash evaporator (8) through a wastewater pump II (7), and the secondary flash evaporator (8) and the primary flash evaporator (3) are respectively connected with a vacuum pump (1) and a vacuum pump (1) through pipelines, Waste water pump III (2).
2. the heat exchange device applied to wastewater treatment as claimed in claim 1, wherein the primary flash evaporator (3) and the primary mixer (4) are two relatively independent cylindrical devices.
3. the heat exchange device applied to wastewater treatment as claimed in claim 1, wherein the secondary flash evaporator (8) and the secondary mixer (9) are two relatively independent cylindrical devices.
4. The heat exchange device applied to wastewater treatment of claim 1, wherein the primary flash evaporator (3) and the primary mixer (4) are integrally formed cylindrical equipment, and the primary flash evaporator (3) and the primary mixer (4) are separated by adopting end sockets.
5. The heat exchange device applied to wastewater treatment is characterized in that the secondary flash evaporator (8) and the secondary mixer (9) are integrally formed cylindrical equipment, and the secondary flash evaporator (8) and the secondary mixer (9) are separated by adopting end sockets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920521068.2U CN209763836U (en) | 2019-04-17 | 2019-04-17 | heat exchange device applied to wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920521068.2U CN209763836U (en) | 2019-04-17 | 2019-04-17 | heat exchange device applied to wastewater treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209763836U true CN209763836U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920521068.2U Active CN209763836U (en) | 2019-04-17 | 2019-04-17 | heat exchange device applied to wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209763836U (en) |
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2019
- 2019-04-17 CN CN201920521068.2U patent/CN209763836U/en active Active
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