CN214075076U

CN214075076U - External circulation concentration recovery system

Info

Publication number: CN214075076U
Application number: CN202022641784.XU
Authority: CN
Inventors: 惠谦; 全宁博
Original assignee: Shaanxi Changtai Industrial Co ltd
Current assignee: Shaanxi Changtai Industrial Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-08-31
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses an external circulation concentration recovery system, which comprises a heating tank, an evaporating tank, a heat exchanger and a condensation recovery tank; a plurality of heating pipes are arranged in the heating tank 1, a primary steam outlet is arranged at the top of the heating tank, the primary steam outlet is communicated with the middle part of the evaporating tank through a first connecting pipe, and the bottom of the evaporating tank is communicated with the bottom of the heating tank through a return pipe; the heat exchanger sets up at the top that the jar was retrieved in the condensation, and the top of heat exchanger is provided with the secondary steam entry, and the bottom of heat exchanger is provided with the condensate export, through the second connecting pipe intercommunication between the top of evaporating pot and the secondary steam entry, and the condensate export is retrieved through the third connecting pipe intercommunication between the jar with the condensation. The utility model discloses technical scheme has following advantage: 1. the recovery efficiency is high: the plate heat exchanger is adopted, so that the heat conductivity coefficient is high, and the speed is recovered; 2. the condensation effect is good: the cooling scale is easy to clean, and the condensation work is stable; 3. the failure rate of the equipment is low; 4. the material adaptability is strong.

Description

External circulation concentration recovery system

Technical Field

The utility model relates to a concentrated equipment field that draws, concretely relates to concentrated recovery system of extrinsic cycle.

Background

The conventional external circulation concentrator recovery system adopts a vertical tube array condenser structure, the condensation system exchanges heat through the vertical tube array condenser, media inside and outside a heat exchange tube are respectively secondary steam and cooling water, and secondary steam heat generated by evaporation of a concentration unit is brought into the cooling water through the heat exchange tube to achieve the purpose of recovering condensate. The condensing heat exchange efficiency is low and the cleaning is not easy. The adaptability is poor. The heating system of this structure has the following disadvantages: 1. the condensation effect is poor: the vertical tube condenser is adopted, so that the heat exchange efficiency is low, cooling water scales are not easy to clean, and the condensation recovery effect is influenced. 2. The structure is complicated and the cost is high: the structure needs to arrange the condenser in a double-pass mode, and parts such as the partition plate, the flange tube plate and the like are increased, so that the processing requirement is strict; the tubular condenser is adopted for heat exchange, so that the required condensing area is large; because a plurality of parts are installed in a split type combination mode, the consumption of raw materials and steel of the equipment is high.

Disclosure of Invention

For solving the technical problem, the main objective of the utility model is to provide an outer concentrated recovery system that circulates, the condensation inefficiency that can solve shell and tube condenser, the difficult clearance of incrustation scale, the structure is complicated, the part is many, the problem of easily breaking down.

In order to achieve the above purpose, the present invention adopts the following technical solution.

An external circulation concentration recovery system comprises a heating tank, an evaporating tank, a heat exchanger and a condensation recovery tank; a plurality of heating pipes are arranged in the heating tank, a primary steam outlet is arranged at the top of the heating tank, the primary steam outlet is communicated with the middle part of the evaporating tank through a first connecting pipe, and the bottom of the evaporating tank is communicated with the bottom of the heating tank through a return pipe; the heat exchanger sets up at the top that the jar was retrieved in the condensation, and the top of heat exchanger is provided with the secondary steam entry, and the bottom of heat exchanger is provided with the condensate export, through the second connecting pipe intercommunication between the top of evaporating pot and the secondary steam entry, and the condensate export is retrieved through the third connecting pipe intercommunication between the jar with the condensation.

Furthermore, the heat exchanger is a plate heat exchanger, a cooling water inlet is formed in the bottom of the plate heat exchanger, and a cooling water outlet is formed in the top of the plate heat exchanger.

Furthermore, a material receiving plate is arranged in the condensation recovery tank.

Furthermore, the vacuum condensation recovery device also comprises a vacuum tube, one end of the vacuum tube is communicated with the upper part of the condensation recovery tank, and the other end of the vacuum tube is connected with a vacuum pump.

The utility model discloses technical scheme has following advantage for prior art: 1. the recovery efficiency is high: the plate heat exchanger is adopted, so that the heat conductivity coefficient is high, and the speed is recovered; the vertical type separator has a vertical structure, high separation efficiency and easy cleaning. 2. The condensation effect is good: the cooling scale is easy to clean, the influence on the condensation effect can be eliminated, and the condensation work is stable; the condensate temperature is lower. 3. The operation is simple and convenient: the recovery system of the external circulation concentrator has strong adaptability, and when parameters such as concentration temperature of materials and the like are changed within an allowable range, basic operation can be kept unchanged. 4. The failure rate of the equipment is low: the plate heat exchanger is adopted, so that the work is stable; the combined installation is convenient for cleaning; the lower liquid receiver has enough buffering separation space. 5. The material adaptability is strong: can treat dilute alcohol, such as ethanol extract; the water extract can also be treated: namely, the evaporation medium is the condensation recovery of water vapor. The equipment cost is low: the plate heat exchangers are assembled, so that the equipment has high heat conductivity coefficient and less steel consumption.

Drawings

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

FIG. 1 is a schematic view of an external circulation concentration recovery system of the present invention;

FIG. 2 is a left side view of the condensate recovery tank and heat exchanger;

in the above figures:

1 heating the tank; 101 heating a pipe; 102 primary steam outlet; 2, evaporating the tank; 3, a heat exchanger; 301 secondary steam inlet; 302 a condensate outlet; 303 a cooling water inlet; 304 cooling water outlet; 4, condensing and recovering the tank; 401 receiving plate; 5 a first connecting pipe; 6 a return pipe; 7 a second connecting pipe; 8 a third connecting pipe; 9 vacuum tube.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the spirit of the invention. The invention is therefore not limited to the specific embodiments disclosed below.

Referring to fig. 1 and 2, an external circulation concentration recovery system includes a heating tank 1, an evaporation tank 2, a heat exchanger 3, and a condensation recovery tank 4; a plurality of heating pipes 101 are arranged in the heating tank 1, a primary steam outlet 102 is arranged at the top of the heating tank 1, the primary steam outlet 102 is communicated with the middle part of the evaporating tank 2 through a first connecting pipe 5, and the bottom of the evaporating tank 2 is communicated with the bottom of the heating tank 1 through a return pipe 6; the heat exchanger 3 is arranged at the top of the condensation recovery tank 4, a secondary steam inlet 301 is formed in the top of the heat exchanger 3, a condensate outlet 302 is formed in the bottom of the heat exchanger 3, the top of the evaporation tank 2 is communicated with the secondary steam inlet 301 through a second connecting pipe 7, and the condensate outlet 302 is communicated with the condensation recovery tank 4 through a third connecting pipe 8.

In the above embodiment, the external circulation concentration recovery system includes the heating tank 1, the evaporation tank 2, the heat exchanger 3, and the condensation recovery tank 4. Concentrated feed liquid is introduced into the heating tank 1, a primary steam outlet 102 enters the evaporation tank 2 through the first connecting pipe 5, partial condensate flows back to the bottom of the evaporation tank 2 along the wall of the evaporation tank 2 after evaporation separation in the evaporation tank 2, and flows into the heating tank 1 from the return pipe 6 at the bottom of the evaporation tank 2 for reheating. The feed liquid is circulated for many times and water is evaporated to form concentrated solution. The steam in the evaporating pot 2 enters the heat exchanger 3 from the secondary steam inlet 301 through the second connecting pipe 7 from the top of the evaporating pot 2, the secondary steam is condensed in the heat exchanger 3, and enters the condensation recovery tank 4 from the third connecting pipe 8 for centralized recovery.

Further, the heat exchanger 3 is a plate heat exchanger 3, a cooling water inlet 303 is arranged at the bottom of the plate heat exchanger 3, and a cooling water outlet 304 is arranged at the top of the plate heat exchanger 3. The plate heat exchanger 3 is a high-efficiency heat exchanger 3 formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger 3 is an ideal device for exchanging heat between liquid and gas. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, wide application, long service life and the like. Under the condition of the same pressure loss, the heat transfer coefficient of the heat exchanger is 3-5 times higher than that of the tubular heat exchanger 3, the occupied area of the heat exchanger is one third of that of the tubular heat exchanger 3, and the heat recovery rate can reach more than percent.

Further, a material receiving plate 401 is arranged in the condensation recovery tank 4. In order to reduce the impact of the condensate on the condensation recovery tank 4 and prevent the condensate from splashing, a receiving tray 401 is arranged in the condensation recovery tank 4. The liquid receiving plate has two types of concave and flat shapes. The concave liquid receiving disc can form a good liquid seal at low liquid amount and has a buffer function of changing the flow direction of liquid.

Further, the device also comprises a vacuum tube 9, wherein one end of the vacuum tube 9 is communicated with the upper part of the condensation recovery tank 4, and the other end of the vacuum tube 9 is connected with a vacuum pump. The vacuum pipe 9 is arranged to provide power for the circulation of the steam in the whole system, and the steam circulation is promoted.

Although the invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that certain changes and modifications can be made therein without departing from the scope of the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. An external circulation concentration recovery system is characterized by comprising a heating tank (1), an evaporating tank (2), a heat exchanger (3) and a condensation recovery tank (4); a plurality of heating pipes (101) are arranged in the heating tank (1), a primary steam outlet (102) is arranged at the top of the heating tank (1), the primary steam outlet (102) is communicated with the middle part of the evaporating tank (2) through a first connecting pipe (5), and the bottom of the evaporating tank (2) is communicated with the bottom of the heating tank (1) through a return pipe (6); the heat exchanger (3) is arranged at the top of the condensation recovery tank (4), a secondary steam inlet (301) is formed in the top of the heat exchanger (3), a condensate outlet (302) is formed in the bottom of the heat exchanger (3), the top of the evaporation tank (2) is communicated with the secondary steam inlet (301) through a second connecting pipe (7), and the condensate outlet (302) is communicated with the condensation recovery tank (4) through a third connecting pipe (8).

2. The external circulation concentration recovery system according to claim 1, wherein the heat exchanger (3) is a plate heat exchanger (3), the bottom of the plate heat exchanger (3) is provided with a cooling water inlet (303), and the top of the plate heat exchanger (3) is provided with a cooling water outlet (304).

3. The external circulation concentration recovery system according to claim 1, wherein a receiving tray (401) is arranged in the condensation recovery tank (4).

4. The external circulation concentration recovery system according to claim 1, further comprising a vacuum pipe (9), wherein one end of the vacuum pipe (9) is communicated with the upper part of the condensation recovery tank (4), and the other end is connected with a vacuum pump.