CN214829138U

CN214829138U - Efficient high salt waste water enrichment facility

Info

Publication number: CN214829138U
Application number: CN202120584234.0U
Authority: CN
Inventors: 张永涛; 刘世文; 程明强; 王宪法
Original assignee: Huachen Tiancheng Technology Co ltd
Current assignee: Huachen Tiancheng Technology Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-11-23
Anticipated expiration: 2031-03-23

Abstract

The utility model provides an efficient high salt waste water concentration device, firstly, high salt waste water enters a circulating water pool, a first water pump is started, the high salt waste water enters a heat exchanger to be heated, the heated high salt waste water is respectively sent to a first evaporator and a second evaporator, primary evaporation is carried out on the first evaporator and the second evaporator, the evaporated high salt waste water returns to the circulating water pool through a backflow pipeline, evaporated steam is discharged along with a fan through a demister, condensed water collected by the demister is separately discharged, after multiple cycles, the high salt waste water in the circulating water pool reaches a fixed concentration, the high salt waste water is discharged into the high salt water pool, a second water pump is started, the high salt waste water after preliminary concentration is sent to the second evaporator to be subjected to secondary evaporation, the evaporated steam is discharged along with the fan through the demister, the condensed water collected by the demister is separately discharged, the evaporated waste water returns to the high salt water pool through the backflow pipeline, after multiple cycles, the high-salinity wastewater reaches the required concentration, can be pumped out by a pipeline and sold as a product to the outside.

Description

Efficient high salt waste water enrichment facility

Technical Field

The utility model relates to a waste heat field of recycling especially indicates a high salt waste water enrichment facility of efficient.

Background

At present, the zero-emission treatment process for high-salinity wastewater generally comprises a series of process units such as heat exchange and cooling treatment, pretreatment, biochemical treatment, advanced oxidation, sand filtration, ultrafiltration, reverse osmosis and the like, in addition, concentrated water generated by the process is required to be oxidized, softened and concentrated, and finally, an evaporative crystallization process is adopted to form solid salt. The existing zero-emission treatment process has the defects of long flow, complex operation, poor stability, high energy and medicament consumption, large occupied area, high operation cost, difficult disposal of solid salt due to high organic matter content and the like, is difficult to stably operate for a long time, and has limited application range. Meanwhile, in the actual production of the factories, waste flue gas generated after heating and burning of fuel is gathered through a main flue and then continuously discharged to the atmosphere, meanwhile, the temperature of the waste flue gas can reach more than 200 ℃, the flue gas is discharged into the air through the self-pulling force of a chimney, and if the waste heat is not recycled, precious energy is wasted, and the environment is polluted. In addition, the utilization of the waste heat of the waste steam in the production process of the factory or the waste heat gas generated in other processes is also an important way for improving the economy and saving the fuel. Therefore, measures are needed to be taken to recycle waste heat of waste flue gas, waste steam, waste heat and the like, and the method is used for realizing the high-salinity wastewater zero-emission process and process, and has very important practical significance for effectively reducing the cost and promoting the realization of the sustainable development strategy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve among the prior art scale deposit under the high temperature evaporation, the energy consumption is high, investment running cost is high, the complicated scheduling problem of structure, an efficient high salt waste water enrichment facility is proposed, the device adopts low temperature ordinary pressure evaporation technique, adopt low temperature ordinary pressure evaporation technique, can effectively avoid the scale deposit under the high temperature evaporation and the high problem of energy consumption, require to reduce substantially to equipment material simultaneously, utilize the waste heat resource that production system can't utilize as far as possible, realize the utilization of resources maximize, reduce substantially the running cost of evaporation process simultaneously.

The technical scheme of the utility model is realized like this:

an efficient high salinity wastewater concentration device, comprising: the system comprises a circulating water pool, a high-salt water pool and a heat exchanger, wherein a first water pump is arranged in the circulating water pool, the first water pump is connected with the heat exchanger through a pipeline, the heat exchanger is also connected with a plant waste heat pipe, the plant waste heat pipe provides a heat exchange heat source for the heat exchanger, the water outlet end of the heat exchanger is connected with a first evaporator and a second evaporator, a demister is arranged on the upper side of the first evaporator, and a fan is arranged on the upper side of the demister; the right side of the second evaporator is also provided with the demister, and the right side of the demister is provided with the fan; a second water pump is also arranged in the high-salt water pool and is connected with the second evaporator through a pipeline; and a return pipeline is arranged between the first evaporator and the second evaporator and between the second evaporator and the circulating water tank, and a return pipeline is also arranged between the second evaporator and the high-salt water tank.

Further, a heat source in the plant waste heat pipe is steam or hot water.

Furthermore, H-shaped heat exchange cores are arranged in the first evaporator and the second evaporator.

Furthermore, the H-shaped heat exchange core body is made of a material with low density and corrosion resistance.

Further, the circulating water pond with be equipped with the pipeline that draws water between the high salt water pond be equipped with the suction pump on the pipeline that draws water.

The beneficial effects are that:

1. the device indirectly evaporates and concentrates high-salt wastewater by utilizing waste heat (steam, hot water and the like) resources of a plant area through an evaporator core body, the core body is made of a special material into an H plate structure, the device has the characteristics of high heat exchange efficiency and large evaporation area, the H-shaped heat exchange core body is made of a special high polymer material, the surface is subjected to hydrophilic treatment, the device has low density, corrosion resistance, ageing resistance and hydrophilicity, the device adopts a special H plate structure design and a non-pressure medium channel, the compression resistance and the folding resistance are good, and the scaling and blocking conditions are prevented to the maximum extent;

2. in order to further increase the concentration efficiency of the high-salinity wastewater and prevent the secondary pollution to the environment possibly caused by the evaporated water vapor, a fan and a demister are additionally arranged on the device.

3. The bottom is provided with a high-salt water tank and a circulating water tank, high-salt wastewater is evaporated and concentrated through multiple cycles, and the high-salt wastewater can be sold in a product mode after the high-salt wastewater is close to the saturated concentration.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

in fig. 1, 1 is a circulating water tank, 2 is a high-salt water tank, 3 is a heat exchanger, 4 is a first water pump, 5 is a plant waste heat pipe, 6 is a first evaporator, 7 is a second evaporator, 8 is a demister, 9 is a fan, and 10 is a second water 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 any creative effort belong to the protection scope of the present invention.

A high-efficiency high-salinity wastewater concentrating device as shown in fig. 1, comprising: the system comprises a circulating water tank 1, a high-salt water tank 2 and a heat exchanger 3, wherein a first water pump 4 is arranged in the circulating water tank 1, the first water pump 4 is connected with the heat exchanger 3 through a pipeline, the heat exchanger 3 is also connected with a plant waste heat pipe 5, the plant waste heat pipe 5 provides a heat exchange heat source for the heat exchanger 3, the water outlet end of the heat exchanger 3 is connected with a first evaporator 6 and a second evaporator 7, a demister 8 is arranged on the upper side of the first evaporator 6, and a fan 9 is arranged on the upper side of the demister 8; a demister 8 is also arranged on the right side of the second evaporator 7, and a fan 9 is arranged on the right side of the demister 8; a second water pump 10 is also arranged in the high-salt water tank 2, and the second water pump 10 is connected with the second evaporator 7 through a pipeline; return ducts (not shown) are provided between the first and

second evaporators

6 and 7 and the circulating water tank 1, and between the second evaporator 7 and the high-salt water tank 2.

The heat source in the residual heat pipe 5 of the plant area is steam or hot water.

H-shaped heat exchange cores are arranged in the first evaporator 6 and the second evaporator 7.

The H-shaped heat exchange core body is made of materials with low density and corrosion resistance.

A water pumping pipeline is arranged between the circulating water tank 1 and the high-salt water tank 2, and a water pumping pump is arranged on the water pumping pipeline.

The principle of the low-temperature normal-pressure evaporation technology of the device is as follows: the air is used as a heat carrier and a moisture carrier, the higher the temperature of the air is, the higher the capacity of the air for containing water vapor (the water vapor is different from the water vapor), although the water vapor can chemically react with partial components (such as salt in suspended dust) in the air or be absorbed by porous particles, the proportion occupied by the processes or the reactions is very small, on the contrary, most of the water vapor can be dissolved in the air, the dry air can be generally regarded as an ideal gas, and the air is heated and humidified by the high-salt wastewater in the core under the condition that the temperature difference between the air and the water is kept, the heated air takes away the moisture from the high-salt wastewater, and the high-salt wastewater in the system is gradually concentrated to be close to a saturated state through repeated circulating evaporation.

The working process of the device is as follows: high-salt wastewater to be treated enters a circulating water tank 1, a first water pump 4 is started, the high-salt wastewater enters a heat exchanger 3 (a heat source of the heat exchanger 3 comes from plant waste heat resources) to be heated, the heated high-salt wastewater is respectively sent to a first evaporator 6 and a second evaporator 7, primary evaporation is carried out on H-shaped heat exchange cores of the first evaporator 6 and the second evaporator 7, the evaporated high-salt wastewater returns to the circulating water tank 1 through a backflow pipeline, evaporated steam is discharged along with a fan 9 through a demister 8, condensed water collected by the demister 8 is separately discharged, after multiple cycles, the high-salt wastewater in the circulating water tank 1 reaches a fixed concentration (the concentration is more than or equal to 10%), the high-salt wastewater is discharged into a high-salt water tank 2, the second water pump 10 is started, the primarily concentrated high-salt wastewater is sent to the second evaporator 7 to be subjected to secondary evaporation, the evaporated steam is discharged along with the fan 9 through the demister 8, the condensed water collected by the demister 8 is discharged independently, the evaporated wastewater returns to the high-salt water tank 2 through the return pipeline, and after multiple cycles, the high-salt wastewater reaches the required concentration (the concentration is more than or equal to 35 percent), can be pumped out by the pipeline and is sold as a product to the outside.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient high salinity wastewater concentration device, comprising: circulating water pond, high salt water pond, heat exchanger, its characterized in that: a first water pump is arranged in the circulating water pool, the first water pump is connected with the heat exchanger through a pipeline, the heat exchanger is also connected with a plant waste heat pipe, the plant waste heat pipe provides a heat exchange heat source for the heat exchanger, the water outlet end of the heat exchanger is connected with a first evaporator and a second evaporator, a demister is arranged on the upper side of the first evaporator, and a fan is arranged on the upper side of the demister; the right side of the second evaporator is also provided with the demister, and the right side of the demister is provided with the fan; a second water pump is also arranged in the high-salt water pool and is connected with the second evaporator through a pipeline; and a return pipeline is arranged between the first evaporator and the second evaporator and between the second evaporator and the circulating water tank, and a return pipeline is also arranged between the second evaporator and the high-salt water tank.

2. The high efficiency, high salinity wastewater concentration device of claim 1, characterized in that: and a heat source in the plant waste heat pipe is steam or hot water.

3. The high efficiency, high salinity wastewater concentration device of claim 1, characterized in that: and H-shaped heat exchange cores are arranged in the first evaporator and the second evaporator.

4. The high efficiency, high salinity wastewater concentration device of claim 3, characterized in that: the H-shaped heat exchange core body is made of materials with low density and corrosion resistance.

5. The high efficiency, high salinity wastewater concentration device of claim 1, characterized in that: the circulating water tank with be equipped with the pipeline that draws water between the high salt water pond be equipped with the suction pump on the pipeline that draws water.