阅读说明：本技术 一种荧光增白剂废液浓缩装置及其处理方法 (Fluorescent brightener waste liquid concentrating device and treatment method thereof ) 是由 钱君 于 2019-10-21 设计创作，主要内容包括：本发明涉及一种荧光增白剂废液浓缩装置及其处理方法,包括一效蒸、二效、三效蒸发器,三效蒸发器管层连接原料储罐,三效、二效蒸发器分别连接三效、二效气液分离器,三效、二效气液分离器液体出口分别连接二效、一效蒸发器的管层,一效蒸发器管层连接出料管路,一效蒸发器的壳层分别连接蒸气发生器、第一冷凝水储罐和二效蒸发器壳层,二效、三效气液分离器的气体出口分别与三效蒸发器壳层和冷凝器壳层连接,冷凝器壳层还与一效蒸发器管层和二效蒸发器管层连接,冷凝器壳层连接第二冷凝水储罐,一效蒸发器为内循环蒸发器,二效蒸发器和三效蒸发器均为降膜蒸发器,所述荧光增白剂废液浓缩装置及其处理方法,系统运行稳定,运行成本低,使用寿命长。(The invention relates to a fluorescent brightener waste liquid concentration device and a treatment method thereof, which comprises a first-effect evaporator, a second-effect evaporator and a third-effect evaporator, wherein the pipe layer of the third-effect evaporator is connected with a raw material storage tank, the third-effect evaporator and the second-effect evaporator are respectively connected with a third-effect gas-liquid separator and a second-effect gas-liquid separator, the liquid outlets of the third-effect gas-liquid separator and the second-effect evaporator are respectively connected with the pipe layer of the second-effect evaporator and the pipe layer of the first-effect evaporator, the pipe layer of the first-effect evaporator is connected with a steam generator, a first condensed water storage tank and the shell layer of the second-effect evaporator, the gas outlets of the second-effect gas-liquid separator and the third-effect gas-liquid separator are respectively connected with the shell layer of the third-effect evaporator and the shell layer of a condenser, the shell layer of the condenser is also connected, the fluorescent brightener waste liquid concentrating device and the treatment method thereof have the advantages of stable system operation, low operation cost and long service life.)

1. The utility model provides a fluorescent brightener waste liquid enrichment facility which characterized in that: including one effect evaporator (1), two effect evaporator (2) and three effect evaporator (3), three effect evaporator (3) pipe layer access connection raw materials storage tank (4), three effect evaporator (3) are connected three effect vapour and liquid separator (5), and the pipe layer import of three effect vapour and liquid separator (5) liquid outlet connection two effect evaporator (2), the connection two effect vapour and liquid separator (6) of two effect evaporator (2), two effect vapour and liquid separator (6) liquid outlet connection one effect evaporator (1) pipe layer import, one effect evaporator (1) pipe layer exit linkage ejection of compact pipeline, steam generator, first condensate water storage tank (7) and two effect evaporator (2) shell import are connected respectively to the shell of one effect evaporator (1), the gas outlet and the three effect evaporator (3) shell access connection of two effect vapour and liquid separator (6), the gas outlet connection condenser (8) shell import of three effect vapour and liquid separator (3), condenser (8) shell import still with one effect evaporimeter (1) pipe layer and two effect evaporimeter (2) pipe layer access connection, condenser (8) shell exit linkage second condensate water storage tank (9), one effect evaporimeter (1) is the inner loop evaporator, two effect evaporimeter (2) and three effect evaporimeter (3) are falling film evaporator.

2. A fluorescent brightener waste liquid concentrating apparatus according to claim 1, characterized in that: an internal circulation stirring shaft is arranged in the first-effect evaporator (1).

3. A fluorescent brightener waste liquid concentrating apparatus according to claim 1, characterized in that: the top end of the first-effect evaporator (1) is connected with a first-effect gas-liquid separator (10), a gas outlet of the first-effect gas-liquid separator (10) is connected with a shell inlet of the second-effect evaporator (2), and a liquid outlet of the first-effect gas-liquid separator (10) is connected with a return opening of the first-effect evaporator (1).

4. A fluorescent brightener waste liquid concentrating apparatus according to claim 1, characterized in that: the discharge pipeline connected with the first-effect evaporator (1) adopts a jacket heat-insulating pipe, the inner layer of the jacket heat-insulating pipe is connected with the pipe layer outlet of the first-effect evaporator (1), and the outer layer of the jacket heat-insulating pipe is connected with a first condensed water storage tank (7).

5. A fluorescent brightener waste liquid concentrating apparatus according to claim 1, characterized in that: the second condensed water storage tank (9) is also connected with condensed water outlets of the condenser (8), the triple-effect gas-liquid separator (5), the triple-effect evaporator (3), the double-effect gas-liquid separator (6) and the double-effect evaporator (2) through a condensed water pipeline.

6. A fluorescent brightener waste liquid treatment method comprises the following steps:

1) triple-effect evaporation: fluorescent brightener waste liquid with 6.25 percent of sodium chloride enters a tube layer of a triple-effect evaporator (3) from a raw material storage tank (4), steam separated by a double-effect gas-liquid separator (6) enters a shell layer of the triple-effect evaporator (3), the fluorescent brightener waste liquid is heated to evaporate water in the fluorescent brightener waste liquid, the evaporated fluorescent brightener waste liquid enters the triple-effect gas-liquid separator (5) for gas-liquid separation, the content of the sodium chloride in the fluorescent brightener waste liquid after evaporation separation reaches 8.9 percent, the fluorescent brightener waste liquid is discharged from a liquid outlet of the triple-effect gas-liquid separator (5) and is sent to the tube layer of the double-effect evaporator (2), the steam separated by the triple-effect gas-liquid separator (5) is discharged from a gas outlet of the triple-effect gas-liquid separator (5) and enters a,

meanwhile, cooling water enters a condensation pipe of the condenser (8) to condense steam to form condensed water, the condensed water enters a second condensed water storage tank (9) to be collected, and the condensed water generated by the triple-effect evaporator (3) and the triple-effect gas-liquid separator (5) is also discharged into the second condensed water storage tank (9) to be collected;

2) two-effect evaporation: the fluorescent brightener waste liquid with the sodium chloride content of 8.9 percent enters a tube layer of the double-effect evaporator (2), meanwhile, steam coming out of the shell of the first-effect evaporator (1) enters the shell of the second-effect evaporator (2), the fluorescent brightener waste liquid is heated to evaporate water in the fluorescent brightener waste liquid, the content of sodium chloride in the fluorescent brightener is continuously improved, the fluorescent brightener waste liquid after passing through the second-effect evaporator (2) enters a second-effect gas-liquid separator (6) to be subjected to gas-liquid separation, the content of sodium chloride in the fluorescent brightener waste liquid after being subjected to the evaporation separation reaches 15.5%, and is discharged from a liquid outlet of the double-effect gas-liquid separator (6) and sent into a tube layer of the first-effect evaporator (1), steam separated by the double-effect gas-liquid separator (6) is discharged from a gas outlet of the double-effect gas-liquid separator (6) and sent into a shell layer of the third-effect evaporator (3), and the condensed water generated by the double-effect evaporator (2) and the double-effect gas-liquid separator (6) is also discharged into a second condensed water storage tank (9) for collection;

3) first-effect evaporation: the method comprises the steps that fluorescent brightener waste liquid with the sodium chloride content of 15.5% enters a tube layer of a first-effect evaporator (1), meanwhile, raw steam generated by a steam generator enters a shell layer of the first-effect evaporator (1), the fluorescent brightener waste liquid is heated, moisture in the fluorescent brightener waste liquid is continuously evaporated, the water is evaporated through the first-effect evaporator (1), the fluorescent brightener waste liquid and the sodium chloride content reach 60%, the water is discharged from a discharge tube and collected, the raw steam enters a shell layer of a second-effect evaporator (2) after heat exchange is finished, and condensate water of the first-effect evaporator (1) enters a first condensate water storage tank (7) to be collected.

7. The method for treating fluorescent brightener waste liquid according to claim 6, characterized in that: the pressure in the first-effect evaporator (1) is-0.04 MPa, the pressure in the second-effect evaporator (2) is-0.065 MPa, and the pressure in the third-effect evaporator (3) is-0.09 MPa.

8. The method for treating fluorescent brightener waste liquid according to claim 6, characterized in that: the upper end of the first-effect evaporator (1) is connected with a first-effect gas-liquid separator (10), partial steam in the first-effect evaporator (1) enters the first-effect gas-liquid separator (10), gas-liquid separation is carried out through the first-effect gas-liquid separator (10), liquid is discharged from a liquid outlet of the first-effect gas-liquid separator (10) and is sent back to a tube layer of the first-effect evaporator (1), and gas is discharged from a liquid outlet of the first-effect gas-liquid separator (10) and enters a shell layer of the second-effect evaporator (2).

Technical Field

The invention relates to a waste liquid treatment device, in particular to a fluorescent brightener waste liquid concentration device and a treatment method thereof.

Background

The main component in the concentration of the fluorescent brightener waste liquid is sodium chloride, and the sodium chloride can be recovered by concentrating the fluorescent brightener waste liquid, but the concentration efficiency of some conventional concentration equipment is low, and the equipment is blocked.

Disclosure of Invention

The applicant aims at the defects and researches and improves, and provides a fluorescent brightener waste liquid concentrating device and a treatment method thereof.

The technical scheme adopted by the invention is as follows:

the utility model provides a fluorescent brightener waste liquid enrichment facility, includes one effect evaporimeter, two effect evaporimeter and three effect evaporimeter, three effect evaporimeter pipe layer access connection raw materials storage tank, three effect evaporimeter connection three effect vapour and liquid separator, the pipe layer import of three effect vapour and liquid separator liquid exit linkage two effect evaporimeters, two effect vapour and liquid separator's connection two effect vapour and liquid separator, two effect vapour and liquid separator liquid exit linkage one effect evaporimeter pipe layer import, one effect evaporimeter pipe layer exit linkage discharge pipeline, steam generator, first condensate water storage tank and two effect evaporimeter shell import are connected respectively to the shell of one effect evaporimeter, two effect vapour and liquid separator's gas outlet and three effect evaporimeter shell access connection, three effect vapour and liquid separator's gas outlet connection condenser shell import, condenser shell import still with one effect evaporimeter pipe layer and two effect evaporator pipe layer access connection, the shell layer outlet of the condenser is connected with a second condensed water storage tank, the first-effect evaporator is an internal circulation evaporator, and the second-effect evaporator and the third-effect evaporator are both falling film evaporators.

As a further improvement of the above technical solution:

an internal circulation stirring shaft is arranged in the first-effect evaporator.

The top end of the first-effect evaporator is connected with a first-effect gas-liquid separator, a gas outlet of the first-effect gas-liquid separator is connected with a shell layer inlet of the second-effect evaporator, and a liquid outlet of the first-effect gas-liquid separator is connected with a reflux port of the first-effect evaporator.

The discharge pipeline connected with the single-effect evaporator adopts a jacket heat-insulating pipe, the inner layer of the jacket heat-insulating pipe is connected with the pipe layer outlet of the single-effect evaporator, and the outer layer of the jacket heat-insulating pipe is connected with a first condensed water storage tank.

And the second condensed water storage tank is also connected with condensed water outlets of the condenser, the three-effect gas-liquid separator, the three-effect evaporator, the two-effect gas-liquid separator and the two-effect evaporator through a condensed water pipeline.

A fluorescent brightener waste liquid treatment method comprises the following steps:

1) triple-effect evaporation: fluorescent brightener waste liquid with the sodium chloride content of 6.25 percent enters a tube layer of a three-effect evaporator from a raw material storage tank, meanwhile, steam separated by the two-effect gas-liquid separator enters a shell layer of the three-effect evaporator, the fluorescent brightener waste liquid is heated to evaporate water in the fluorescent brightener waste liquid, the evaporated fluorescent brightener waste liquid enters the three-effect gas-liquid separator for gas-liquid separation, the sodium chloride content of the fluorescent brightener waste liquid after evaporation and separation reaches 8.9 percent, the fluorescent brightener waste liquid is discharged from a liquid outlet of the three-effect gas-liquid separator and is sent to a tube layer of the two-effect evaporator, the steam separated by the three-effect gas-liquid separator is discharged from a gas outlet of the three-effect gas-liquid separator and enters a shell, meanwhile, cooling water enters a condensation pipe of the condenser to condense steam to form condensed water, the condensed water enters a second condensed water storage tank to be collected, and the condensed water produced by the triple-effect evaporator and the triple-effect gas-liquid separator is also discharged into a second condensed water storage tank for collection;

2) two-effect evaporation: the method comprises the following steps that (1) fluorescent brightener waste liquid with the sodium chloride content of 8.9% enters a tube layer of a double-effect evaporator, steam discharged from a shell layer of the single-effect evaporator enters a shell layer of the double-effect evaporator, the fluorescent brightener waste liquid is heated to evaporate water in the fluorescent brightener waste liquid, the sodium chloride content in the fluorescent brightener is continuously improved, the fluorescent brightener waste liquid after passing through the double-effect evaporator enters a double-effect gas-liquid separator for gas-liquid separation, the sodium chloride content of the fluorescent brightener waste liquid after being subjected to evaporation separation reaches 15.5%, the fluorescent brightener waste liquid is discharged from a liquid outlet of the double-effect gas-liquid separator and is sent to the tube layer of the single-effect evaporator, the steam separated by the double-effect gas-liquid separator is discharged from a gas outlet of the double-effect gas-liquid separator and is sent to the shell layer;

3) first-effect evaporation: the fluorescent brightener waste liquid with the sodium chloride content of 15.5% enters a tube layer of a first-effect evaporator, raw steam generated by a steam generator enters a shell layer of the first-effect evaporator, the fluorescent brightener waste liquid is heated, water in the fluorescent brightener waste liquid is continuously evaporated, the fluorescent brightener waste liquid is evaporated by the first-effect evaporator, the fluorescent brightener waste liquid and the sodium chloride content reach 60% and are discharged from a discharge tube and collected, the raw steam enters a shell layer of a second-effect evaporator after heat exchange, and condensed water of the first-effect evaporator enters a first condensed water storage tank to be collected.

The pressure in the first-effect evaporator is-0.04 MPa, the pressure in the second-effect evaporator is-0.065 MPa, and the pressure in the third-effect evaporator is-0.09 MPa.

The upper end of the first-effect evaporator is connected with the first-effect gas-liquid separator, part of steam in the first-effect evaporator enters the first-effect gas-liquid separator, gas-liquid separation is carried out through the first-effect gas-liquid separator, liquid is discharged from a liquid outlet of the first-effect gas-liquid separator and is sent back to a pipe layer of the first-effect evaporator, and gas is discharged from a liquid outlet of the first-effect gas-liquid separator and enters a shell layer of the second-effect evaporator.

The invention has the following beneficial effects: according to the fluorescent brightener waste liquid concentration device and the treatment method thereof, the two-stage falling-film evaporator and the one-stage internal circulation evaporator with stirring are adopted for evaporation concentration, so that the final sodium chloride content of the material reaches 60%, the material flow rate in the evaporation process is high, the wall hanging phenomenon is avoided, the system operation is stable, the operation cost is low, and the service life is long.

Drawings

Fig. 1 is a schematic flow diagram of a fluorescent brightener waste liquid concentrating device provided by the invention.

Fig. 2 is a schematic structural diagram of a single-effect evaporator of a fluorescent brightener waste liquid concentration device provided by the invention.

Fig. 3 is a schematic structural diagram of a two-effect evaporator and a three-effect evaporator of the fluorescent brightener waste liquid concentration device provided by the invention.

Fig. 4 is a schematic structural diagram of a condenser of the fluorescent brightener waste liquid concentrating device provided by the invention.

In the figure: 1. a first-effect evaporator; 2. a second effect evaporator; 3. a triple effect evaporator; 4. a raw material storage tank; 5. a triple effect gas-liquid separator; 6. a two-effect gas-liquid separator; 7. a first condensate storage tank; 8. a condenser; 9. a second condensate storage tank; 10. a single-effect gas-liquid separator.

Detailed Description

The following describes a specific embodiment of the present embodiment with reference to the drawings.

As shown in fig. 1 to 4, the fluorescent brightener waste liquid concentration device of the embodiment includes a first-effect evaporator 1, a second-effect evaporator 2 and a third-effect evaporator 3, the first-effect evaporator 1 is an internal circulation evaporator, the second-effect evaporator 2 and the third-effect evaporator 3 are both falling film evaporators, a tube layer inlet of the third-effect evaporator 3 is connected with a raw material storage tank 4, the third-effect evaporator 3 is connected with a third-effect gas-liquid separator 5, a liquid outlet of the third-effect gas-liquid separator 5 is connected with a tube layer inlet of the second-effect evaporator 2, the second-effect evaporator 2 is connected with a second-effect gas-liquid separator 6, a liquid outlet of the second-effect gas-liquid separator 6 is connected with a tube layer inlet of the first-effect evaporator 1, a tube layer outlet of the first-effect evaporator 1 is connected with a discharging pipeline, a shell layer of the first-effect evaporator 1 is respectively connected with a steam generator, the gas outlet of the three-effect gas-liquid separator 5 is connected with the inlet of a shell layer of a condenser 8, the inlet of the shell layer of the condenser 8 is also connected with the inlet of a tube layer 1 of the first-effect evaporator and the inlet of a tube layer 2 of the second-effect evaporator, and the outlet of the shell layer of the condenser 8 is connected with a second condensed water storage tank 9.

An internal circulation stirring shaft is arranged in the first-effect evaporator 1, materials can form internal circulation in the pipe layer of the first-effect evaporator 1 by rotating the stirring shaft, the flow rate of the materials is improved, the wall-hanging phenomenon of the materials is overcome, and the pipeline is prevented from being blocked.

The top end of the first-effect evaporator 1 is connected with a first-effect gas-liquid separator 10, a gas outlet of the first-effect gas-liquid separator 10 is connected with a shell layer inlet of the second-effect evaporator 2, a liquid outlet of the first-effect gas-liquid separator 10 is connected with a reflux port of the first-effect evaporator 1, part of steam in the evaporation process of the first-effect evaporator 1 is discharged from the upper part of the first-effect evaporator 1 and enters the first-effect gas-liquid separator 10, the steam is separated through the first-effect gas-liquid separator 10, the liquid flows back to the first-effect evaporator 1 again, and the.

The discharge pipeline that first effect evaporimeter 1 connects adopts and presss from both sides the cover insulating tube, and the pipe layer export of the internal layer of cover insulating tube connection first effect evaporimeter 1 presss from both sides the outer first condensate water storage tank 7 of connection of cover insulating tube, through the temperature of the comdenstion water in the first effect evaporimeter 1, makes discharge pipeline keep the high temperature state, prevents that discharge pipeline from blockking up.

The second condensed water storage tank 9 is also connected with condensed water outlets of the condenser 8, the three-effect gas-liquid separator 5, the three-effect evaporator 3, the two-effect gas-liquid separator 6 and the two-effect evaporator 2 through a condensed water pipeline and is collected through the second condensed water storage tank 9.

The condensed water of the first-effect evaporator 1 is pure soft water and can be transported to an important place through the first condensed water storage tank 7, and the condensed water of the condenser 8, the three-effect gas-liquid separator 5, the three-effect evaporator 3, the two-effect gas-liquid separator 6 and the two-effect evaporator 2 is non-purified water and can be recycled to a production line.

The fluorescent brightener waste liquid treatment method of the embodiment comprises the following steps:

1) triple-effect evaporation: under the working condition that the operating pressure of the triple-effect evaporator 3 is-0.09 Mpa, the boiling point of the material is about 48 ℃, the fluorescent brightener waste liquid with the sodium chloride content of 6.25% enters the tube layer of the triple-effect evaporator 3 from the raw material storage tank 4, meanwhile, the steam separated by the double-effect gas-liquid separator 6 enters the shell layer of the triple-effect evaporator 3 to heat the fluorescent brightener waste liquid, the water in the fluorescent brightener waste liquid is evaporated, the evaporated fluorescent brightener waste liquid enters the triple-effect gas-liquid separator 5 to be subjected to gas-liquid separation, the sodium chloride content of the fluorescent brightener waste liquid after the evaporation separation reaches 8.9%, the steam separated by the triple-effect gas-liquid separator 5 is discharged from the liquid outlet of the triple-effect gas-liquid separator 5 and is sent to the tube layer of the double-effect evaporator 2, the steam separated by the triple-effect gas-liquid separator 5 is discharged from, condensed water enters a second condensed water storage tank 9 for collection, and the condensed water generated by the triple-effect evaporator 3 and the triple-effect gas-liquid separator 5 is also discharged into the second condensed water storage tank 9 for collection;

2) two-effect evaporation: the operating pressure of the second-effect evaporator 2 is-0.065 Mpa, the boiling point of the material is about 74 ℃, the fluorescent brightener waste liquid with the sodium chloride content of 8.9 percent enters the tube layer of the second-effect evaporator 2, meanwhile, steam coming out of the shell of the first-effect evaporator 1 enters the shell of the second-effect evaporator 2, the fluorescent brightener waste liquid is heated to evaporate moisture in the fluorescent brightener waste liquid, the content of sodium chloride in the fluorescent brightener is continuously increased, the fluorescent brightener waste liquid passes through the second-effect evaporator 2 and then enters the second-effect gas-liquid separator 6 for gas-liquid separation, the content of sodium chloride in the fluorescent brightener waste liquid after evaporation separation reaches 15.5 percent, and is discharged from a liquid outlet of the double-effect gas-liquid separator 6 and sent into a tube layer of the first-effect evaporator 1, steam separated by the double-effect gas-liquid separator 6 is discharged from a gas outlet of the double-effect gas-liquid separator 6 and sent into a shell layer of the third-effect evaporator 3, and the condensed water produced by the double-effect evaporator 2 and the double-effect gas-liquid separator 6 is also discharged into a second condensed water storage tank 9 for collection;

3) first-effect evaporation: under the working condition that the operating pressure of the first-effect evaporator 1 is-0.04 Mpa, the boiling point of a material is about 98 ℃, the fluorescent brightener waste liquid with the sodium chloride content of 15.5% enters a tube layer of the first-effect evaporator 1, meanwhile, raw steam generated by the steam generator enters a shell layer of the first-effect evaporator 1, the fluorescent brightener waste liquid is heated, moisture in the fluorescent brightener waste liquid is continuously evaporated, the fluorescent brightener waste liquid is evaporated by the first-effect evaporator 1, the sodium chloride content of the fluorescent brightener waste liquid reaches 60%, the fluorescent brightener waste liquid is discharged and collected from a discharge tube, the raw steam enters a shell layer of the second-effect evaporator 2 after heat exchange, and condensate water of the first-effect evaporator 1 enters a.

The upper end of the first-effect evaporator 1 is connected with a first-effect gas-liquid separator 10, partial steam in the first-effect evaporator 1 enters the first-effect gas-liquid separator 10, gas-liquid separation is carried out through the first-effect gas-liquid separator 10, liquid is discharged from a liquid outlet of the first-effect gas-liquid separator 10 and is sent back to a tube layer of the first-effect evaporator 1, and gas is discharged from a liquid outlet of the first-effect gas-liquid separator 10 and enters a shell layer of the second-effect evaporator 2.

The foregoing description is illustrative of the present invention and is not to be construed as limiting thereof, the scope of the invention being defined by the appended claims, which may be modified in any manner without departing from the basic structure thereof.