Rectifying tower flash steam recovery device

Abstract

The utility model discloses a flash steam recovery device for a rectifying tower. The flash steam recovery device comprises a tubular heat exchanger, a compressor, a purification box body and a recovery storage box body, after the tubular heat exchanger is installed on the top face of the purification box through a supporting frame, the feeding end is connected with a steam outlet of the rectifying tower, the compressor is arranged on the side wall of the purification box and connected with the discharging end of the tubular heat exchanger, and the compressor compresses steam and then conveys the steam into the purification box. A purification mechanism is arranged in the purification box body, steam enters the purification box body through the compressor and then is subjected to impurity removal and purification through the purification mechanism, and the purified steam is stored in the recovery and storage box body located below the purification box body. Compared with the prior art, the device has the advantages that steam is primarily cooled through the tubular heat exchanger, condensate water is recycled, then the pressure of the steam is increased through the compressor so as to facilitate follow-up treatment, and energy waste caused by steam discharge is effectively reduced; and the pollutant discharge amount is reduced through the purification mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifying tower technical field, specifically is a rectifying tower flash evaporation steam recovery device. BACKGROUND

[0002] In the chemical industry, rectifying tower is one of the important equipment of separating liquid mixture. In the operation process, a large amount of flash evaporation steam (i.e. the steam formed by rapid evaporation due to the sudden change of temperature or pressure) is produced;

[0003] Traditionally, the flash evaporation steam produced by rectifying tower is often released into the air without treatment, however, these vapors usually contain impurities and volatile organic compounds (VOCs), if directly discharged into the atmosphere, this leads to a large amount of heat energy loss, and the flash evaporation steam without filtration or purification contains harmful substances, direct discharge will have a negative impact on air quality; this needs a rectifying tower flash evaporation steam recovery device. SUMMARY

[0004] The technical problem to be solved by the utility model is that steam direct discharge not only causes waste, and has certain pollution, provide a rectifying tower flash evaporation steam recovery device.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a rectifying tower flash evaporation steam recovery device, including tubular heat exchanger, compressor, purification box and recovery storage tank,

[0006] The tubular heat exchanger is installed on the top surface of the purification box through the support frame, the feed end is connected with the steam outlet of the rectifying tower, the compressor is arranged on the side wall of the purification box and connected with the discharge end of the tubular heat exchanger, the compressor transports the steam after compression into the purification box;

[0007] The purification mechanism is arranged in the purification box, after the steam enters the purification box through the compressor, the purification mechanism is removed and purified, and the purified steam is stored in the recovery storage tank below the purification box.

[0008] As an improvement, it further includes a drain pipe and a water collecting tank;

[0009] The drain pipe is connected with the condensate outlet of the tubular heat exchanger, and the condensate is released into the water collecting tank on the top surface of the purification box through the drain valve, and the water collecting tank is provided with a liquid level display screen.

[0010] As an improvement, the purification mechanism includes an electric dust collector and an activated carbon adsorption plate;

[0011] The electric dust collector is arranged at the top of the purification box body, and a plurality of electric dust collectors are arranged in sequence, and the steam passes through each electric dust collector in sequence for dust removal and then passes through the activated carbon adsorption plate.

[0012] As an improvement, a transparent cover plate is hingedly arranged on the purification box body, and an installation groove for placing the activated carbon adsorption plate is arranged inside.

[0013] As an improvement, a gas detector is arranged on the side wall of the purification box body below the activated carbon adsorption plate, and the purified gas passes through the gas detector and then enters the recovery storage box body through the air pump and the conveying pipe.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. The steam is preliminarily cooled by the tubular heat exchanger and the condensed water is recovered, and then the pressure of the steam is increased by the compressor for subsequent treatment, so that the energy waste caused by steam emission is effectively reduced.

[0016] 2. The steam is purified by the electric dust collector and the activated carbon adsorption plate, so that the pollutant emission is reduced, and the green production goal is achieved.

[0017] 3. The gas detector is provided, so that the quality of the purified gas can be monitored in real time, and the safety and compliance of the output gas are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the first perspective view of the rectifying tower flash steam recovery device.

[0019] Figure 2 is the second perspective view of the rectifying tower flash steam recovery device.

[0020] Figure 3 is the sectional view of the rectifying tower flash steam recovery device.

[0021] Figure 4 is the schematic view of the tubular heat exchanger of the rectifying tower flash steam recovery device.

[0022] As shown in the figure: 1, tubular heat exchanger; 2, compressor; 3, purification box body; 4, recovery storage box body; 5, drain pipe; 6, water collecting tank; 7, liquid level display screen; 8, electric dust collector; 9, activated carbon adsorption plate; 10, transparent cover plate; 11, installation groove; 12, gas detector; 13, air pump; 14, conveying pipe. DETAILED DESCRIPTION

[0023] In the description of the utility model, need understanding is, the term "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the orientation or positional relation indicated is based on the orientation or positional relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element indicated must have a particular orientation, a particular orientation is constructed and operated, therefore it can not be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and it can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more. In addition, the term "includes" and any variation thereof is intended to cover non-exclusive inclusion.

[0024] The utility model will be further described in detail below in connection with the drawings.

[0025] Example one

[0026] A rectifying tower flash steam recovery device, in combination with the drawings Figure 1 And 4 As shown, it comprises tubular heat exchanger 1, compressor 2 and purification tank body 3;Tubular heat exchanger 1 is installed behind the top surface of purification tank body 3 through support frame, and the feed end is connected with rectifying tower steam outlet, compressor 2 is arranged on the side wall of purification tank body 3, and is connected with the discharge end of tubular heat exchanger 1, and compressor 2 sends steam to purification tank body 3 after compression;

[0027] It also includes drain pipe 5 and water collecting tank 6;Drain pipe 5 is connected with the condensate outlet of tubular heat exchanger 1, and then releases condensate to water collecting tank 6 on the top surface of purification tank body 3 through drain valve, and liquid level display screen 7 is arranged on water collecting tank 6;

[0028] Through the above structure, flash steam is preliminarily cooled through heat exchanger, and the generated condensate flows into water collecting tank 6 through drain pipe 5, and the water amount can be observed through liquid level display screen 7, and compressor 2 further compresses the steam after preliminary cooling and sends it into purification tank body 3;

[0029] Example two

[0030] On the basis of example one in combination with the drawings Figures 2-3Also shown, the recovery storage tank 4 is provided with a purification mechanism in the purification tank 3, the purification mechanism includes electric dust collector 8 and activated carbon adsorption plate 9; electric dust collector 8 is arranged at the top inside the purification tank 3, and is sequentially provided with a plurality of, steam sequentially passes through each electric dust collector 8 after dust removal through activated carbon adsorption plate 9, activated carbon adsorption plate 9 can be detachably installed below electric dust collector 8, the purified steam enters the recovery storage tank 4, after the steam enters the purification tank 3 through the compressor 2, the impurities are removed and purified through the purification mechanism, and the purified steam is stored in the recovery storage tank 4 below the purification tank 3;

[0031] Through the above structure, the steam sequentially passes through a plurality of electric dust collectors 8 to remove particulate matter, and then passes through activated carbon adsorption plate 9 to adsorb the remaining organic pollutants, double purification, to ensure that the steam entering the recovery storage tank 4 is pure and the pollutant emission is reduced;

[0032] The transparent cover plate 10 is hingedly arranged on the purification tank 3, and the installation groove 11 for placing the activated carbon adsorption plate 9 is arranged inside, the transparent cover plate 10 and the detachable activated carbon adsorption plate 9 make cleaning and replacement of filter material simple and fast, and reduce the maintenance difficulty; the gas detector 12 is arranged below the activated carbon adsorption plate 9 on the side wall of the purification tank 3, the purified gas passes through the gas detector 12, then enters the recovery storage tank 4 through the air pump 13 and the conveying pipe 14, and the gas detector 12 is provided to monitor the quality of the purified gas in real time, so as to ensure the safety and compliance of the output gas.

[0033] In the specific implementation of the utility model, firstly, the feed end of the device is connected with the steam outlet of the rectifying tower, ensuring that all the connections are sealed well, the tubular heat exchanger 1 is opened, the flash steam is preliminarily cooled by the heat exchanger, the generated condensed water flows into the water collecting tank 6 through the drain pipe 5, the water amount can be observed through the liquid level display screen 7, and the steam preliminarily cooled is further compressed by the compressor 2 and then sent into the purification tank 3;

[0034] In the purification tank 3, the steam sequentially passes through a plurality of electric dust collectors 8 to remove particulate matter, and then passes through activated carbon adsorption plate 9 to adsorb the remaining organic pollutants, the purified gas is detected in quality by the gas detector 12 arranged on the side wall of the purification tank 3, and the qualified gas is sent into the recovery storage tank 4 through the air pump 13 and the conveying pipe 14 and stored for reuse;

[0035] The transparent cover plate 10 is opened regularly to check the state of the activated carbon adsorption plate 9, and the activated carbon adsorption plate 9 is taken out for cleaning or replacement if necessary, and the electric dust collector 8 is conveniently overhauled.

[0036] The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A flash steam recovery device for a distillation column, characterized in that: It includes a tubular heat exchanger (1), a compressor (2), a purification chamber (3), and a recovery and storage chamber (4); After the tubular heat exchanger (1) is installed on the top surface of the purification box (3) by the support frame, the feed end is connected to the steam outlet of the distillation column. The compressor (2) is set on the side wall of the purification box (3) and connected to the discharge end of the tubular heat exchanger (1). The compressor (2) compresses the steam and delivers it into the purification box (3). The purification chamber (3) is equipped with a purification mechanism. After the steam enters the purification chamber (3) through the compressor (2), it is purified by the purification mechanism. The purified steam is stored in the recovery storage chamber (4) located below the purification chamber (3).

2. The distillation column flash steam recovery device according to claim 1, characterized in that: It also includes a drain pipe (5) and a water collection tank (6); After the drain pipe (5) is connected to the condensate outlet of the tubular heat exchanger (1), the condensate is released into the water collection tank (6) on the top surface of the purification box (3) through the drain valve. The water collection tank (6) is equipped with a liquid level display screen (7).

3. The distillation column flash steam recovery device according to claim 1, characterized in that: The purification mechanism includes an electrostatic precipitator (8) and an activated carbon adsorption plate (9); Electrostatic precipitators (8) are installed at the top inside the purification chamber (3), and multiple precipitators are installed in sequence. After steam passes through each electrostatic precipitator (8) for dust removal, it passes through the activated carbon adsorption plate (9). The activated carbon adsorption plate (9) is detachably installed below the electrostatic precipitator (8). After steam purification, it enters the recycling storage chamber (4).

4. The distillation column flash steam recovery device according to claim 3, characterized in that: A transparent cover plate (10) is hinged on the purification box (3), and an installation groove (11) is provided inside to accommodate the activated carbon adsorption plate (9).

5. A distillation column flash steam recovery device according to claim 3, characterized in that: A gas detector (12) is installed on the side wall of the purification chamber (3) below the activated carbon adsorption plate (9). After the purified gas passes through the gas detector (12), it enters the recycling storage chamber (4) through the air pump (13) and the delivery pipe (14).

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