CN218392286U

CN218392286U - High salt waste water triple effect evaporator concentration crystallization device

Info

Publication number: CN218392286U
Application number: CN202221872221.4U
Authority: CN
Inventors: 韩洵
Original assignee: Jiangsu Lvjing Ecological Environment Science And Technology Co ltd
Current assignee: Jiangsu Lvjing Ecological Environment Science And Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-01-31
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a high salt waste water triple effect evaporimeter concentration crystallization device, retrieve the jar including feeding buffer tank, one-effect evaporimeter, two-effect evaporimeter, three-effect evaporimeter, heat exchanger, condenser, intermediate storage jar, centrifuge and condensate, one-effect evaporimeter, two-effect evaporimeter and three-effect evaporimeter are connected and constitute the evaporation crystallizer with the series connection form, be provided with the buffer pump between the export of feeding buffer tank and the import of evaporation crystallizer, the exit linkage centrifuge of evaporation crystallizer, the evaporation crystallizer is connected to the condenser, the exit linkage condensate recovery jar of condenser, the beneficial effects of the utility model: guarantee circulation performance and evaporation condensation performance that can be better, part simple structure, guarantee evaporative crystallization's that can be better working property has solved the purity of current evaporative crystallization device evaporative crystallization high inadequately, and evaporative crystallization's working property is not perfect enough problem.

Description

High salt waste water triple effect evaporator concentration crystallization device

Technical Field

The utility model relates to a crystallization evaporator technical field specifically is a concentrated crystallization device of high salt waste water triple effect evaporator.

Background

The salt wastewater refers to wastewater with at least 1% of total salt mass fraction, and is mainly from chemical plants, petroleum and natural gas collection and processing and the like.

In the process of extracting and evaporating the salt of the high-salinity wastewater, a triple-effect evaporation system is usually adopted for evaporating the high-salinity wastewater. However, after the high-salinity wastewater is evaporated in the last effect, the moisture in the wastewater cannot be sufficiently separated from the salt, so that the water collection amount does not reach the standard, and the moisture content of the separated high-salinity substance also does not meet the industrial standard. Therefore, how to further improve the water evaporation effect of the high-salinity wastewater and to clearly foam is a technical problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a concentrated crystallization device of triple effect evaporator of high salt waste water to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-salinity wastewater triple-effect evaporator concentration crystallization device comprises a feeding buffer tank, a single-effect evaporator, a double-effect evaporator, a triple-effect evaporator, a heat exchanger, a condenser, an intermediate storage tank, a centrifugal machine and a condensate recovery tank, wherein the single-effect evaporator, the double-effect evaporator and the triple-effect evaporator are connected in series and form an evaporation crystallizer, a buffer pump is arranged between an outlet of the feeding buffer tank and an inlet of the evaporation crystallizer, an outlet of the evaporation crystallizer is connected with the centrifugal machine, the condenser is connected with the evaporation crystallizer, the intermediate storage tank is arranged between the centrifugal machine and the evaporation crystallizer, and an outlet of the condenser is connected with the condensate recovery tank;

the heat exchanger comprises a tubular preheater and a plate heat exchanger, a steam outlet of the centrifuge is connected with the tubular preheater, an outlet of the tubular heat exchanger is connected with the plate heat exchanger, and an outlet of the plate heat exchanger is connected with the evaporative crystallizer;

and a concentrated solution recovery tank is arranged at the outlet of the centrifugal machine.

Further, a steam compressor is arranged between the tubular preheater and the plate heat exchanger.

Furthermore, the evaporative crystallizer comprises a primary distribution disc and a secondary distribution disc, a feeding port of the primary distribution disc is connected with the circulating buffer pump, a plurality of discharge pipe orifices with the same diameter are arranged at a discharge port of the primary distribution disc, the plurality of discharge pipe orifices are respectively and correspondingly connected with the secondary distribution disc, and the pipe orifices of the secondary distribution disc are uniformly divided into a plurality of secondary discharge pipe orifices again.

Furthermore, the evaporating chambers of the first-effect evaporator, the second-effect evaporator and the third-effect evaporator all adopt a double-section feeding and discharging mode.

Furthermore, a concentrated solution outlet of the centrifugal machine is provided with a branch, and the branch is provided with a forced circulation pump which is connected with an inlet of the evaporative crystallizer in a backflow manner.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an installation evaporation equipment, heat exchanger and vapor compressor, guarantee circulation performance and evaporation condensation performance that can be better, part simple structure, the working property of guarantee evaporation crystallization that can be better, through installing centrifuge, can be better separate the gas-liquid, guarantee the performance of purification, solved the purity of the evaporation crystallization of current evaporation crystallization device high inadequately, the working property of evaporation crystallization is not perfect enough;

the foam catcher can effectively reduce the generation of foam and reduce the interference on the subsequent processes;

the conditions of blockage and wall adhesion can be effectively reduced by improving the feeding pipe orifice of the evaporative crystallizer, and the evaporative crystallization efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a schematic view of the structure of the first-level distribution plate of the present invention;

fig. 3 is a schematic view of the structure of the second-level distribution plate of the present invention.

In the figure: 1. a feed buffer tank; 2. a first-effect evaporator; 3. a second effect evaporator; 4. a triple effect evaporator; 5. a heat exchanger; 6. an intermediate storage tank; 8. a centrifuge; 9. a concentrated solution recovery tank; 10. an evaporation crystallizer; 11. a buffer pump; 12. a vapor compressor; 13. a primary distribution tray; 14. a secondary distribution tray; 15. a circulating buffer pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in the embodiment of the present invention, a high-salinity wastewater triple-effect evaporator concentration crystallization apparatus includes a feeding buffer tank 1, a single-effect evaporator 2, a double-effect evaporator 3, a triple-effect evaporator 4, a heat exchanger 5, a condenser 6, an intermediate storage tank 7, a centrifuge 8 and a condensate recovery tank 9, wherein the single-effect evaporator 2, the double-effect evaporator 3 and the triple-effect evaporator 4 are connected in series to form an evaporation crystallizer 10, a buffer pump 11 is disposed between an outlet of the feeding buffer tank 1 and an inlet of the evaporation crystallizer 10, an outlet of the evaporation crystallizer 10 is connected to the centrifuge 8, the condenser 5 is connected to the evaporation crystallizer 10, the intermediate storage tank 7 is disposed between the centrifuge 8 and the evaporation crystallizer 10, and an outlet of the condenser 5 is connected to the condensate recovery tank;

the heat exchanger 5 comprises a tubular preheater and a plate heat exchanger, a steam outlet of the centrifuge 8 is connected with the tubular preheater, an outlet of the tubular heat exchanger is connected with the plate heat exchanger, and an outlet of the plate heat exchanger is connected with the evaporative crystallizer 10;

centrifuge 8's export sets up concentrate recovery tank 9, centrifuge 8 specifically adopts multistage centrifuge to separate for probably get into the foam volume greatly reduced in the back end process in the separation process, all sets up the mist eliminator in every section centrifuge simultaneously, the mist eliminator comprises two parts, and the first part is the toper reflecting screen, and the second part is the stainless steel mist eliminator net, and the foam will be reflected back or break when touchhing the toper reflecting screen, can not get into to go in the process of next section.

The steam compressor 12 is arranged between the tubular preheater and the plate heat exchanger, and the wastewater generated by the third-effect evaporator 4 can absorb heat energy again through the tubular preheater and the steam compressor 12 to improve the water temperature, so that the heat utilization rate of the evaporative crystallizer 10 is improved.

It is worth noting that the evaporative crystallizer 10 comprises a primary distribution disk 13 and a secondary distribution disk 14, a feeding port of the primary distribution disk 13 is connected with a circulating buffer pump 15, a discharging port of the primary distribution disk 13 is provided with a plurality of discharging pipe orifices with equal diameters, the discharging pipe orifices are respectively and correspondingly connected with the secondary distribution disk 14, pipe orifices of the secondary distribution disk 14 are uniformly divided into a plurality of secondary discharging pipe orifices again, through improvement on the primary distribution disk 13 and the secondary distribution disk 14, feed liquid flowing into the discharging pipe orifices can be kept uniform, blocking phenomenon in the pipes can be effectively prevented, the times and cost of manual cleaning and maintenance are reduced, and secondly, the evaporative crystallizer 10 specifically adopts a fine-rolled seamless fluid pipe with internal polishing, and the possibility of wall sticking and blocking is reduced fundamentally; furthermore, the evaporative crystallizer 10 is further provided with a cleaning device, and the cleaning device is an electric scraper.

It is worth noting that the evaporation chambers of the first-effect evaporator 2, the second-effect evaporator 3 and the third-effect evaporator 4 all adopt a double-section feeding and discharging mode.

It is noted that the concentrated solution outlet of the centrifuge 8 is provided with a branch, and the branch is provided with a forced circulation pump which is connected with the inlet of the evaporative crystallizer 10 in a backflow manner.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides a high salt waste water triple effect evaporator concentration crystallization device, includes that feeding buffer tank, one effect evaporator, two effect evaporator, three effect evaporator, heat exchanger, condenser, middle storage jar, centrifuge and condensate recovery jar, its characterized in that: the device comprises a feed buffer tank, a condenser, a middle storage tank, a condensate recovery tank, a centrifugal machine, a condenser, a condensate recovery tank and a control system, wherein the feed buffer tank is connected with the feed buffer tank;

and a concentrated solution recovery tank is arranged at an outlet of the centrifuge.

2. The high-salinity wastewater three-effect evaporator concentration and crystallization device as claimed in claim 1, characterized in that: and a steam compressor is arranged between the tubular preheater and the plate heat exchanger.

3. The high-salinity wastewater triple-effect evaporator concentration and crystallization device as claimed in claim 1, characterized in that: the evaporative crystallizer comprises a primary distribution disc and a secondary distribution disc, a feeding port of the primary distribution disc is connected with a circulating buffer pump, a discharge port of the primary distribution disc is provided with a plurality of discharge pipe orifices with the same diameter, a plurality of discharge pipe orifices are respectively and correspondingly connected with the secondary distribution disc, and the pipe orifices of the secondary distribution disc are equally divided into a plurality of secondary discharge pipe orifices.

4. The high-salinity wastewater triple-effect evaporator concentration and crystallization device as claimed in claim 1, characterized in that: the evaporation chambers of the first-effect evaporator, the second-effect evaporator and the third-effect evaporator all adopt a double-section feeding and discharging mode.

5. The high-salinity wastewater three-effect evaporator concentration and crystallization device as claimed in claim 1, characterized in that: and a concentrated solution outlet of the centrifugal machine is provided with a branch path, and the branch path is provided with a forced circulation pump which is connected with an inlet of the evaporation crystallizer in a backflow manner.