CN205965064U - Hydrogen peroxide solution concentration unit falling film evaporation ware annular steam distributor - Google Patents

Abstract

The utility model discloses an annular steam distributor of a falling film evaporator of a hydrogen peroxide concentration device, which comprises an outer shell of the annular steam distributor, an inner shell of the annular steam distributor and an outer shell of the equipment, an outer shell of the annular steam distributor and an annular steam distributor. The inner shell of the device is connected to form an annular steam distributor. The outer shell of the annular steam distributor is provided with an outer body, and the inner wall of the outer body is fixedly connected with the surface of the inner shell of the annular steam distributor. The steam inlet structure of the utility model significantly slows down the flow velocity and steam deposition, makes the distribution of added steam uniform, and the steam flow velocity is very low, thereby significantly reducing the stress and impact on the heat exchange tubes, and the heat exchange tubes are caused by steam deposition. The corrosion and the formation of the film on the inner wall of the tube are very small. At the same time, the annular steam distributor also plays the role of the expansion joint of the heat exchanger, thereby improving the evaporation efficiency and reducing the steam consumption, thereby improving the service life of the equipment and the output. has also been further improved.

Description

Falling film evaporator annular steam distributor of a hydrogen peroxide concentration device

technical field

The utility model relates to the technical field of heat exchangers that need to be heated by steam, in particular to an annular steam distributor of a falling film evaporator of a hydrogen peroxide concentration device.

Background technique

The falling film evaporator of the hydrogen peroxide concentration device is the key equipment. In the past, the heating steam directly entered the tubes of the evaporator. Although a buffer baffle was installed at the entrance, the steam entered from one side. The tubes near the buffer plate are thus impinged by the steam and corroded due to the deposition of the steam. This part of the tube will vibrate due to the impact of steam in one direction, which will affect the formation of the inner wall film of the tube. Also due to the uneven distribution of steam, the heat exchange tubes are not evenly heated, resulting in poor heat transfer effect, and even dry pipe phenomenon, reduced evaporation, reduced output, and reduced the service life of the entire equipment.

Utility model content

The purpose of the utility model is to provide a hydrogen peroxide concentration device falling film evaporator annular steam distributor to solve the above-mentioned deficiencies.

In order to achieve the above purpose, the utility model provides the following technical solutions: a hydrogen peroxide concentration device falling film evaporator annular steam distributor, including the outer casing of the annular steam distributor, the inner casing of the annular steam distributor and the outer body of the equipment, the The outer casing of the annular steam distributor and the inner casing of the annular steam distributor are connected to form an annular steam distributor. The outer casing of the annular steam distributor is provided with an outer body of the device, and the inner wall of the outer body of the device is connected with the inner body of the annular steam distributor. The surface of the shell is fixedly connected, the top of the outer casing of the annular steam distributor is fixedly connected with the upper tube plate flange of the falling film evaporator, and one side of the falling film evaporator upper tube plate flange is fixedly connected with an emptying pipe , one side of the outer casing of the annular steam distributor is fixedly connected with a steam inlet, the inner wall of the inner casing of the annular steam distributor is fixedly connected with a baffle, and the baffle is fixedly connected with a heat exchange tube, The two ends of the heat exchange tubes are respectively fixedly connected with the upper tube sheet flange of the falling film evaporator and the lower tube sheet flange of the falling film evaporator, and one side of the lower tube sheet flange of the falling film evaporator is fixedly connected with a row At the end, the lower tube plate flange of the falling film evaporator is fixedly connected to the bottom of the outer body of the equipment, and one side of the outer body of the equipment is respectively fixedly connected with a steam condensate discharge port and a non-condensable gas outlet.

Preferably, the positions of the steam and condensed water discharge port and the non-condensable gas outlet are arranged sequentially from top to bottom.

Preferably, there are two baffles, and the two baffles are respectively located at the upper half and the lower half of the inner casing of the annular steam distributor.

Preferably, the non-condensable gas outlet is arranged below the baffle plate in the lower half of the inner casing of the annular steam distributor.

Preferably, the position of the steam condensed water discharge port is higher than that of the exhaust port.

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

1. The steam inlet structure of this utility model significantly slows down the flow rate and steam deposition, makes the distribution of added steam uniform, and the steam flow rate is very low, so that the stress and impact on the heat exchange tube are significantly reduced, and the heat exchange tube due to steam deposition The resulting corrosion and the formation of the film on the inner wall of the tube are very small. At the same time, the annular steam distributor also acts as an expansion joint of the heat exchanger, thereby improving the evaporation efficiency, reducing steam consumption, and thus improving the service life of the equipment. , the yield has also been further improved.

2. The utility model distributor makes the steam heating evenly, the flow velocity is low, the impact on the heat exchange tube is small, the steam energy consumption is further reduced, and it is especially suitable for the steam distribution of the falling film evaporator of the hydrogen peroxide concentration device.

Description of drawings

Fig. 1 is the structural representation after the transformation of the utility model;

Fig. 2 is the structure schematic diagram before the transformation of the utility model;

Fig. 3 is a schematic diagram of the top view structure of the utility model.

In the figure: 1 steam condensate discharge port, 2 non-condensable gas outlet, 3 baffle plate, 4 equipment outer casing, 5 annular steam distributor outer shell, 6 annular steam distributor inner shell, 7 emptying pipe, 8 drop Film evaporator upper tube sheet flange, 9 steam inlet, 10 heat exchange tube, 11 falling film evaporator lower tube sheet flange, 12 exhaust port.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1-3, a falling film evaporator annular steam distributor of a hydrogen peroxide concentration device, including an annular steam distributor outer shell 5, an annular steam distributor inner shell 6 and an outer body 4 of the equipment, and an annular steam distributor outer shell The body 5 and the inner housing 6 of the annular steam distributor are connected to form an annular steam distributor. The outer housing 5 of the annular steam distributor is provided with an outer body 4, and the inner wall of the outer body 4 is connected to the inner housing 6 of the annular steam distributor. The surface is fixedly connected, and the top of the outer casing 5 of the annular steam distributor is fixedly connected with the upper tube sheet flange 8 of the falling film evaporator, and one side of the upper tube sheet flange 8 of the falling film evaporator is fixedly connected with an exhaust pipe 7, and the annular steam One side of the outer casing 5 of the distributor is fixedly connected with a steam inlet 9, and the inner wall of the inner casing 6 of the annular steam distributor is fixedly connected with a baffle 3. As the name implies, the baffle 3 is a plate used to change the flow direction of the fluid. Shell-and-tube heat exchangers design the shell-side medium flow path, and determine the number of baffles 3 according to the nature and flow of the medium and the size of the heat exchanger. The baffles 3 are set on the shell side, which can not only improve the heat transfer effect, but also To support the tube bundle, there are two baffles 3, and the two baffles 3 are respectively located in the upper half and the lower half of the inner casing 6 of the annular steam distributor, and the baffles 3 are fixedly connected with Heat exchange tube 10, heat exchange tube 10 is one of the elements of the heat exchanger, placed in the cylinder, used for heat exchange between two media, the two ends of the heat exchange tube 10 are respectively connected with the upper tube of the falling film evaporator The plate flange 8 and the lower tube plate flange 11 of the falling film evaporator are fixedly connected, and several heat exchange tubes 10 are canceled near the position of the steam non-condensable gas outlet 2 of the falling film evaporator heat exchanger, so that there is enough separation space to To reduce the resistance when pumping non-condensable gas, one side of the lower tube plate flange 11 of the falling film evaporator is fixedly connected with an exhaust port 12, and the lower tube plate flange 11 of the falling film evaporator is fixedly connected to the bottom of the simplified body 4 outside the equipment, One side of the simplified body 4 outside the equipment is respectively fixedly connected with the steam condensate discharge port 1 and the non-condensable gas outlet 2. The positions of the gas outlets 2 are set from top to bottom in turn, and the non-condensable gas outlets 2 are set under the lower half of the baffle plate 3 of the inner casing 6 of the annular steam distributor to prevent the steam from short-circuiting when the vacuum is drawn out, and the steam inlet structure is significantly slowed down. The flow rate and the deposition of steam are improved, the steam distribution is uniform, and the steam flow rate is very low, so that the stress and impact on the heat exchange tube 10 are significantly reduced, and the corrosion of the heat exchange tube 10 due to steam deposition and the damage to the inner wall film of the tube The impact of the formation is very small. At the same time, the annular steam distributor also acts as an expansion joint of the heat exchanger, thereby improving the evaporation efficiency and reducing steam consumption, thereby increasing the service life of the equipment and further increasing the output. The The distributor makes the steam heated evenly, the flow rate is low, the impact on the heat exchange tube 10 is small, the steam energy consumption is further reduced, and it is especially suitable for the steam distribution of the falling film evaporator of the hydrogen peroxide concentration device.

To sum up, the annular steam distributor of the falling film evaporator of the hydrogen peroxide concentration device, the steam inlet structure significantly slows down the flow rate and steam deposition, so that the added steam is evenly distributed, and the steam flow rate is very low, so that the heat exchange tube 10 The stress and impact generated are significantly reduced, and the corrosion of the heat exchange tube 10 due to vapor deposition and the formation of the inner wall film of the tube are very small. At the same time, the annular steam distributor also acts as an expansion joint of the heat exchanger, thereby improving The evaporation efficiency is improved, the steam consumption is reduced, the service life of the equipment is improved, and the output is further improved.

When in use, after steam comes in from the steam inlet 9, it is distributed through the annular jacket, overflows from the upper end of the jacket, and enters the top of the heat exchange tube 10. The condensed water discharge port 1 is drained away, and the other part of the non-condensable gas is sucked out from the non-condensable gas outlet 2 by the vacuum pump.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. a hydrogen peroxide concentration device falling film evaporator annular steam distributor, comprising an annular steam distributor outer casing (5), an annular steam distributor inner casing (6) and a simplified body (4) outside the equipment, characterized in that: The outer casing (5) of the annular steam distributor and the inner casing (6) of the annular steam distributor are connected to form an annular steam distributor, and the outer casing (5) of the annular steam distributor is provided with an outer body (4) , the inner wall of the outer simplified body (4) of the device is fixedly connected to the surface of the inner shell (6) of the annular steam distributor, and the top of the outer shell (5) of the annular steam distributor is fixedly connected with the upper tube plate of the falling film evaporator Flange (8), one side of the tube plate flange (8) of the falling film evaporator is fixedly connected with an emptying pipe (7), and one side of the outer casing (5) of the annular steam distributor is fixedly connected with a a steam inlet (9), a baffle (3) is fixedly connected to the inner wall of the inner casing (6) of the annular steam distributor, and a heat exchange tube (10) is fixedly connected to the baffle (3), The two ends of the heat exchange tube (10) are respectively fixedly connected with the falling film evaporator upper tube plate flange (8) and the falling film evaporator lower tube plate flange (11), and the falling film evaporator lower tube plate flange One side of the flange (11) is fixedly connected with an exhaust port (12), and the lower tube plate flange (11) of the falling film evaporator is fixedly connected to the bottom of the outer simplified body (4) of the equipment, and the outer simplified body of the equipment ( One side of 4) is respectively fixedly connected with a steam condensed water discharge port (1) and a non-condensable gas outlet (2). 2. The annular steam distributor of a falling film evaporator of a hydrogen peroxide concentration device according to claim 1, characterized in that: the positions of the steam condensed water discharge port (1) and the non-condensable gas outlet (2) are successively from the top to the next settings. 3. a kind of hydrogen peroxide concentration device falling film evaporator annular steam distributor according to claim 1, is characterized in that: the quantity of described baffle (3) has two, and two baffles (3) ) are respectively located in the upper half and the lower half of the inner casing (6) of the annular steam distributor. 4. A hydrogen peroxide concentration device falling film evaporator annular steam distributor according to claim 1, characterized in that: the non-condensable gas outlet (2) is arranged under the inner casing (6) of the annular steam distributor Below the half baffle (3). 5. The annular steam distributor of a falling film evaporator of a hydrogen peroxide concentration device according to claim 1, characterized in that: the position of the steam condensed water discharge port (1) is higher than the position of the exhaust port (12) .