Nitric acid circulation concentration device based on waste heat utilization

Abstract

The utility model provides a nitric acid circulation concentration device based on waste heat utilization. The nitric acid circulation concentration device comprises a base, a heating tank is fixedly installed on the base, a liquid inlet pipe communicated with the interior of the heating tank is fixedly installed on one side of the heating tank, a supporting plate is fixedly installed on the base and located on one side of the heating tank, and a liquid storage bottle with the top in an opening shape is fixedly installed on the supporting plate. When the water heater is used, the air exhaust assembly is controlled to exhaust air in the shell outwards and convey the air into the cavity, then the air is exhausted through the exhaust port, external air enters the shell through the air inlet, and when water vapor passes through the communicating pipe, the communicating pipe absorbs heat in the water vapor and conducts the heat to the heat conduction piece, so that the heat conduction piece is heated; air is in contact with the heat conduction part during circulation in the shell, heat on the heat conduction part is taken away to form hot air, and the air is in contact with the liquid storage bottle when flowing into the cavity, so that the effect of preheating a dilute nitric acid solution in the liquid storage bottle is achieved, the effect of recycling waste heat is achieved, and the condition of heat loss is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitric acid concentration equipment technical field, concretely relates to the nitric acid circulating concentration device based on waste heat utilization. BACKGROUND

[0002] Nitric acid is a strong acid, has very strong oxidizing property and corrosive, has extensive application in chemical industry, laboratory and many other fields;Nitric acid concentration refers to the process of concentrating low concentration nitric acid solution into high concentration nitric acid solution by certain method;

[0003] For example, the specification drawing Figure 7 Among them, a nitric acid concentration device in the prior art is shown, the base is fixedly installed with the heating tank, the heating tank is fixedly installed with the liquid inlet pipe in communication with the inside, the base is fixedly installed with the support plate on one side of the heating tank, the support plate is fixedly installed with the liquid storage bottle with the open top, the bottle cap for plugging the open end of the liquid storage bottle is installed on the liquid storage bottle, the valve is fixedly installed on the liquid inlet pipe, and the end of the liquid inlet pipe away from the heating tank is connected with the bottom of the liquid storage bottle;The top of the base is fixedly installed with the condenser, the top of the heating tank is connected with the connecting pipe, the other end of the connecting pipe is connected with the condenser, and the collecting bottle is placed below the end of the condenser away from the connecting pipe on the top of the base;When using, after dilute nitric acid is poured into the liquid storage bottle and preheated by the heating equipment, the valve is opened, the dilute nitric acid solution in the liquid storage bottle flows into the heating tank, and then the valve is closed, the dilute nitric acid solution is heated and vaporized by the heating tank, enters the condenser through the connecting pipe, and then flows into the collecting bottle after condensation treatment by the condenser, so that the dilute nitric acid concentration effect is realized, although the nitric acid concentration device can concentrate dilute nitric acid, but the following defects still exist in the actual use process:

[0004] When the heating tank heats and vaporizes the dilute nitric acid solution and enters the condenser through the connecting pipe, the connecting pipe absorbs the heat in the water vapor and then dissipates to the ambient air, so that heat loss is caused;

[0005] Therefore, the nitric acid circulating concentration device based on waste heat utilization is provided. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the nitric acid circulating concentration device based on waste heat utilization is provided, which solves the problems mentioned in the background art.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme:

[0008] The device for concentrating nitric acid by circulation based on waste heat utilization comprises a base, a heating tank fixedly installed on the base, a liquid inlet pipe fixedly installed on one side of the heating tank and communicating with the inside of the heating tank, a supporting plate fixedly installed on the base and located on one side of the heating tank, a liquid storage bottle with an open top fixedly installed on the supporting plate, a bottle cap installed on the liquid storage bottle and used for plugging the open end of the liquid storage bottle, a valve fixedly installed on the liquid inlet pipe, and the liquid inlet pipe is connected with the bottom of the liquid storage bottle through.

[0009] A condenser is fixedly installed on the top of the base, a communication pipe is connected with the top of the heating tank, the other end of the communication pipe is connected with the condenser, a shell is sleeved outside the communication pipe, there is a gap between the inner side wall of the shell and the communication pipe, a heat conduction piece is fixedly installed on the inner side wall of the shell and in contact with the communication pipe, an air inlet is formed in one end of the outer side wall of the shell, and an air outlet is formed in the other end of the outer side wall of the shell.

[0010] Further, the heat conduction piece comprises a plurality of heat conduction plates installed on the inner side wall of the shell in a linear array and in contact with the communication pipe, and the adjacent two heat conduction plates are symmetrically and staggered arranged.

[0011] Further, the air exhaust assembly comprises an air pipe fixedly installed on the shell and communicating with the air outlet, the other end of the air pipe is connected with the air inlet, an installation groove is formed in the top of the air pipe, an air exhaust fan is fixedly installed in the installation groove of the air pipe, and a plugging plate is fixedly installed on the air pipe and used for plugging the installation groove.

[0012] Further, the shell is fixedly installed on the shell and communicates with the air outlet, and the other end of the air pipe is connected with the air inlet.

[0013] Further, the shell is fixedly installed on the shell and communicates with the air outlet, and the other end of the air pipe is connected with the air inlet.

[0014] Further, the shell, the air pipe, the shell and the air pipe are all coated with thermal insulation cotton.

[0015] Further, the base is placed with a collection bottle below the condenser and away from the communication pipe.

[0016] Further, the bottle cap is inserted into the top of the liquid storage bottle and plugs the open end of the liquid storage bottle.

[0017] The utility model provides a nitric acid circulating concentration device based on waste heat utilization, compared with prior art, has the following beneficial effects:

[0018] 1. By setting up the casing, heat conduction spare, cover and air extraction component, when using, control air extraction component exports the air in the casing to the cavity, then discharges through the exhaust port, the outside air enters the casing through the air inlet, when water vapor passes through the communicating pipe, the communicating pipe absorbs the heat in water vapor and conducts to the heat conduction spare, makes the heat conduction spare heat, air contacts the heat conduction spare during circulation in the casing, carries away the heat on the heat conduction spare and forms hot gas, gas flows to the cavity and contacts the liquid storage bottle, thereby realizing the preheating effect of dilute nitric acid solution in the liquid storage bottle, realizing the waste heat reuse effect, effectively avoiding the heat loss condition;

[0019] 2. By setting up the exhaust pipe, the casing, the air pipe, the cavity and the exhaust pipe form the inner passage, when air circulation, the air in the exhaust pipe, the casing, the air pipe, the cavity and the exhaust pipe inside circulation, thereby effectively avoiding the heat loss condition in hot gas;

[0020] 3. By setting up the spiral heat conduction sheet, the cavity inside forms the spiral channel, and the air inlet and the exhaust port are connected with two ends of the spiral channel respectively, after the air extraction component work transports hot gas to the cavity, along the spiral channel flow, during, the heat in hot gas contacts the spiral heat conduction sheet, thereby conducting to the spiral heat conduction sheet, the spiral heat conduction sheet contacts the liquid storage bottle, thereby further improving the preheating effect of dilute nitric acid in the liquid storage bottle. DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0022] Figure 1 The utility model discloses a three-dimensional structure schematic diagram shows the utility model;

[0023] Figure 2 The utility model discloses the installation structure schematic diagram of heat conduction spare shows;

[0024] Figure 3 The utility model discloses the installation structure schematic diagram of spiral heat conduction sheet shows;

[0025] Figure 4 The utility model discloses the structure schematic diagram of exhaust pipe shows;

[0026] Figure 5The mounting structure schematic view of the shell of the utility model is shown;

[0027] Figure 6 The mounting structure schematic view of the air extraction assembly of the utility model is shown;

[0028] Figure 7 A nitric acid concentration device in the prior art is shown;

[0029] As shown in the figure: 1, base; 11, support plate; 12, liquid storage bottle; 13, bottle cap; 2, heating tank; 21, liquid inlet pipe; 22, valve; 23, communication pipe; 3, condenser; 4, shell; 41, air inlet; 42, air outlet; 5, heat conducting part; 51, heat conducting plate; 6, cover body; 61, cavity; 62, air vent; 63, exhaust port; 64, exhaust pipe; 65, spiral heat conducting fin; 7, air extraction assembly; 71, air pipe; 72, mounting groove; 73, air extraction fan; 74, plugging plate; 8, heat preservation cotton; 9, collection bottle. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0031] Embodiment one

[0032] To solve the technical problems in the background art, the following nitric acid circulation concentration device based on waste heat utilization is given:

[0033] In combination Figures 1-6The utility model provides a based on waste heat utilization's nitric acid circulating concentration device, including base 1, the fixed mounting of base 1 has heating tank 2, the specific description is: heating tank 2 includes outer tank body and the inner tank body of fixed in outer tank body, and there is clearance between outer tank body inner bottom wall and inner tank body bottom, and the electric heating plate of being inlayed with inner tank body bottom is fixed in outer tank body inner bottom wall, and only electric heating wire is in electric heating plate, when using, the electric heating wire is powered, and electric heating wire work converts electric energy into heat energy, thereby carries out heating to inner tank body, can realize the heating of dilute nitric acid solution in inner tank body, and one side fixed mounting of heating tank 2 has with its inside intercommunication liquid inlet pipe 21, and the fixed mounting of base 1 and located heating tank 2 one side has support plate 11, and the fixed mounting of support plate 11 has the liquid storage bottle 12 of top being open, and the bottle cap 13 for plugging the open end of liquid storage bottle 12 is installed on liquid storage bottle 12, and the valve 22 is fixedly installed on liquid inlet pipe 21, and one end of liquid inlet pipe 21 away from heating tank 2 is connected with the bottom of liquid storage bottle 12, the top fixed mounting of base 1 has condenser 3, and the top through -connection of heating tank 2 has the communicating pipe 23, and liquid inlet pipe 21 and communicating pipe 23 all with inner tank body through -connection, and the other end of communicating pipe 23 is connected with condenser 3, the outside of communicating pipe 23 is equipped with shell 4, and there is clearance between the inner side wall of shell 4 and communicating pipe 23, and the inner side wall of shell 4 is fixedly installed with the heat conduction piece 5 of being in contact with communicating pipe 23, and the outer side wall of shell 4 one end is equipped with air inlet 41, and the other end is equipped with air outlet 42, the outer side wall of liquid storage bottle 12 is fixedly installed with cover 6, and the cavity 61 is formed between the inner side of cover 6 and liquid storage bottle 12, and the air vent 62 and exhaust port 63 are set up on cover 6, and the air extraction assembly 7 of being in communication with air outlet 42 is installed on shell 4, and the other end of air extraction assembly 7 is in communication with air vent 62, pour dilute nitric acid into liquid storage bottle 12, can store dilute nitric acid solution through liquid storage bottle 12, to dilute nitric acid solution concentration, open valve 22, and dilute nitric acid solution in liquid storage bottle 12 flows to heating tank 2, and then control valve 22 is closed, and dilute nitric acid solution is heated and vaporized through heating tank 2, enters condenser 3 through communicating pipe 23, and then is condensed and handled to flow out through condenser 3, can realize dilute nitric acid concentration effect, through the setting of shell 4, heat conduction piece 5, cover 6 and air extraction assembly 7, when using, control air extraction assembly 7 to extract the air in shell 4 to the cavity 61, and then is discharged through exhaust port 63, and the outside air enters shell 4 through air inlet 41, when water vapor passes through communicating pipe 23, communicating pipe 23 absorbs the heat in water vapor and is conducted to heat conduction piece 5, so that heat conduction piece 5 is heated, and the air in shell 4 contacts heat conduction piece 5 during circulation and carries away the heat on heat conduction piece 5 to form hot air, when the gas flows to the cavity 61 and contacts liquid storage bottle 12, thereby realize the preheating effect of dilute nitric acid solution in liquid storage bottle 12, realize the waste heat reuse effect, effectively avoid the heat loss condition.

[0034] Embodiment Two

[0035] As Figures 1-6 shown in the above embodiment, the present embodiment further gives the following content based on the above embodiment:

[0036] In the present embodiment, the heat conducting member 5 comprises a plurality of heat conducting plates 51 linearly arrayed on the inner side wall of the shell 4 and in contact with the communicating pipe 23, and adjacent two heat conducting plates 51 are symmetrically and staggeredly arranged. In use, the air suction assembly 7 works to transport the air in the shell 4 into the cavity 61, and the communicating pipe 23 itself is heated to radiate heat outward, which is then conducted to the plurality of heat conducting plates 51. When the air flows in the shell 4, it contacts the heat conducting plates 51 to take away the heat on the heat conducting plates 51 to form hot air, thereby achieving the effect of recycling the heat radiated outward by the communicating pipe 23.

[0037] In the present embodiment, the air suction assembly 7 comprises an air pipe 71 fixedly installed on the shell 4 and in communication with the air outlet 42. The other end of the air pipe 71 is in communication with the air inlet 62. An installation groove 72 is formed on the top of the air pipe 71. An air suction fan 73 is fixedly installed on the air pipe 71 and located in the installation groove 72. A blocking plate 74 is fixedly installed on the air pipe 71 and used to block the installation groove 72. In use, the air suction fan 73 is controlled to be turned on, and the air suction fan 73 works to suck the air in the shell 4 outward through the air outlet 42 and then transport it into the cavity 61 and discharge it through the air outlet 63. The external air enters the shell 4 through the air inlet 41, thereby achieving the effect of transporting the air in the shell 4 into the cavity 61.

[0038] In the present embodiment, the cover 6 is fixedly installed with an air outlet pipe 64 in communication with the air outlet 63. The other end of the air outlet pipe 64 is in communication with the air inlet 41. The air outlet pipe 64 is arranged to form an internal passage among the shell 4, the air pipe 71, the cavity 61 and the air outlet pipe 64. When the air suction fan 73 works to flow the air, the air flows in the air outlet pipe 64, the shell 4, the air pipe 71, the cavity 61 and the air outlet pipe 64, thereby effectively avoiding the loss of heat in the hot air.

[0039] Embodiment Three

[0040] As Figures 1-6 shown in the above embodiment, the present embodiment further gives the following content based on the above embodiment:

[0041] In the embodiment, the cover 6 is internally fixedly provided with a spiral heat conduction sheet 65 in contact with the liquid storage bottle 12. The heat conduction sheet 51 and the spiral heat conduction sheet 65 are both made of copper plate. The spiral heat conduction sheet 65 is used to form a spiral channel in the cavity 61. The air inlet 62 and the air outlet 63 are respectively connected to two ends of the spiral channel. The spiral heat conduction sheet 65 is used to form a spiral channel in the cavity 61. The air inlet 62 and the air outlet 63 are respectively connected to two ends of the spiral channel. After the air suction assembly 7 works to deliver hot air into the cavity 61, the hot air flows along the spiral channel. During the process, the heat in the hot air contacts the spiral heat conduction sheet 65, and is thus conducted to the spiral heat conduction sheet 65. The spiral heat conduction sheet 65 is in contact with the liquid storage bottle 12, thereby further improving the preheating effect on the dilute nitric acid in the liquid storage bottle 12.

[0042] In the embodiment, the shell 4, the exhaust pipe 64, the cover 6 and the exhaust pipe 64 are externally covered with thermal insulation cotton 8. The thermal insulation cotton 8 is made of glass fiber. The shell 4, the exhaust pipe 64, the cover 6 and the exhaust pipe 64 are externally covered with thermal insulation cotton 8, thereby achieving the thermal insulation effect of the shell 4, the exhaust pipe 64, the cover 6 and the exhaust pipe 64, and further avoiding the waste of heat due to heat dissipation.

[0043] In the embodiment, the collecting bottle 9 is placed on the top of the base 1 and below the end of the condenser 3 away from the communication pipe 23. The collecting bottle 9 is used to collect the concentrated nitric acid discharged after being condensed by the condenser 3.

[0044] In the embodiment, the bottle cap 13 is inserted into the top of the liquid storage bottle 12 and blocks the open end of the liquid storage bottle 12. The bottle cap 13 is inserted into the top of the liquid storage bottle 12, thereby facilitating the blocking or unblocking of the open end of the liquid storage bottle 12.

[0045] It should be noted that, in the present document, the terms such as first and second, etc., are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or device that includes a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article, or device. Without more limitations, an element defined by the phrase "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element.

[0046] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A nitric acid concentration device based on waste heat utilization, characterized in that: The base (1) is fixedly installed with a heating tank (2), one side of the heating tank (2) is fixedly installed with a liquid inlet pipe (21) communicated with the inside of the heating tank (2), the base (1) is fixedly installed with a support plate (11) on one side of the heating tank (2), the support plate (11) is fixedly installed with a liquid storage bottle (12) with an open top, the liquid storage bottle (12) is installed with a bottle cap (13) for plugging the open end, the liquid inlet pipe (21) is fixedly installed with a valve (22), and one end of the liquid inlet pipe (21) away from the heating tank (2) is connected with the bottom of the liquid storage bottle (12). The top of the base (1) is fixedly installed with a condenser (3), the top of the heating tank (2) is connected with a communication pipe (23), the other end of the communication pipe (23) is connected with the condenser (3), the outside of the communication pipe (23) is sleeved with a shell (4), there is a gap between the inner side wall of the shell (4) and the communication pipe (23), and the inner side wall of the shell (4) is fixedly installed with a heat conducting piece (5) in contact with the communication pipe (23), one end of the outer side wall of the shell (4) is provided with an air inlet (41), and the other end is provided with an air outlet (42), the outer side wall of the liquid storage bottle (12) is fixedly installed with a cover (6), the inner side of the cover (6) and the liquid storage bottle (12) form a cavity (61), the cover (6) is provided with an air vent (62) and an exhaust port (63), the shell (4) is installed with an air exhaust assembly (7) communicated with the air outlet (42), and the other end of the air exhaust assembly (7) is communicated with the air vent (62).

2. The waste heat based nitric acid circulation concentration device according to claim 1, characterized in that: The heat conducting piece (5) includes a plurality of heat conducting plates (51) installed on the inner side wall of the shell (4) in linear array and in contact with the communication pipe (23), and the adjacent two heat conducting plates (51) are symmetrically arranged.

3. The waste heat based nitric acid circulation concentration device according to claim 2, characterized in that: The air exhaust assembly (7) includes an air vent pipe (71) fixedly installed on the shell (4) and communicated with the air outlet (42), the other end of the air vent pipe (71) is communicated with the air vent (62), the top of the air vent pipe (71) is provided with a mounting groove (72), the air vent pipe (71) is fixedly installed with an air exhaust fan (73) in the mounting groove (72), and the air vent pipe (71) is fixedly installed with a blocking plate (74) for blocking the mounting groove (72).

4. The waste heat based nitric acid circulation concentration device according to claim 3, characterized in that: The cover (6) is fixedly installed with an exhaust pipe (64) communicated with the exhaust port (63), and the other end of the exhaust pipe (64) is communicated with the air inlet (41).

5. The waste heat based nitric acid circulation concentration device according to claim 4, characterized in that: The cover (6) is fixedly installed with a spiral heat conducting fin (65) in contact with the liquid storage bottle (12), so that a spiral channel is formed in the cavity (61), and the air vent (62) and the exhaust port (63) are respectively communicated with both ends of the spiral channel.

6. The waste heat based nitric acid circulation concentration device according to claim 5, characterized in that: The outer sides of the shell (4), the exhaust pipe (64), the cover (6) and the exhaust pipe (64) are covered with thermal insulation cotton (8).

7. The waste heat based nitric acid circulation concentration device according to claim 6, characterized in that: The base (1) is placed with a collection bottle (9) below the condenser (3) away from the other end of the communication pipe (23).

8. The waste heat based nitric acid circulation concentration device according to claim 1, characterized in that: The bottle cap (13) is inserted into the top of the liquid storage bottle (12) and seals the opening end of the liquid storage bottle (12).

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