Boiler deoxygenated water preparation device

Abstract

The utility model discloses a boiler deoxygenated water preparation device which comprises a deoxygenating tank, a first heat exchange assembly, a second heat exchange assembly and a vacuum pump. A steam outlet at the top end of the deoxidizing head is connected with an inlet of a vacuum pump through a steam discharge pipeline, an outlet of the vacuum pump is connected with an inlet of a first heat exchange assembly, the first heat exchange assembly is arranged below the liquid level in the deoxidizing tank, and an outlet of the first heat exchange assembly is discharged after being led out of the deoxidizing tank; the second heat exchange assembly is a heat exchanger, an oxygen-free steam inlet path is communicated with a heating medium pipeline of the heat exchanger, an oxygen-containing water inlet path is communicated with a preheating path of the heat exchanger, the oxygen-free steam inlet path is led out of the heat exchanger and then connected with an oxygen-free steam disc located at the bottom end of the deoxidizing head, and the oxygen-containing water inlet path is led out of the heat exchanger and then connected with an oxygen-containing water spray head located at the top end of the deoxidizing head. And the oxygen-free steam disc and the oxygen-containing water spray head directly face each other in the deoxidizing head from bottom to top so as to form a convection deoxidizing area. The boiler deoxygenated water preparation device has the advantages of being based on vacuum transformation, fully utilizing heat energy and reducing energy consumption and cost.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco production line transformation, and more specifically, to a boiler deoxygenated water preparation device. Background Art

[0002] The boiler deoxygenation system used in the existing tobacco production line adopts a thermal deoxygenation system, which includes a deoxygenation tank and a deoxygenation head. The oxygenated inlet water enters the deoxygenation head through spraying, and the oxygen-free steam from the original boiler system enters the deoxygenation head from the steam tray arranged below the deoxygenation head. The oxygenated inlet water and the oxygen-free steam are convectively heated instantaneously to remove oxygen. The steam is discharged from the top of the deoxygenation head, and the condensed water enters the deoxygenation tank below for temporary storage, and then discharged from the oxygen-free water outlet at the bottom for use.

[0003] This structure consumes a huge amount of steam, accounting for more than 10% of the total steam production.

[0004] In order to reduce consumption, attempts were made to modify the drug deoxygenation process, which can achieve deoxygenation at relatively low water temperatures, but the cost of drug raw materials increased.

[0005] Based on this thermal deoxygenation system, how to transform and upgrade it, reduce steam usage, reduce energy consumption, and reduce total costs is a technical problem that urgently needs to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide a boiler deoxygenated water preparation device to solve the problems raised in the above background technology.

[0007] According to one aspect of the utility model, a boiler deoxygenated water preparation device is provided, comprising a deoxygenation tank, a first heat exchange component, a second heat exchange component and a vacuum pump;

[0008] A deaerator head is provided at the upper end of the deaerator tank, and a steam outlet at the top of the deaerator head is connected to the inlet of the vacuum pump through a steam exhaust pipe, and the outlet of the vacuum pump is connected to the inlet of the first heat exchange component, the first heat exchange component is arranged below the liquid level in the deaerator tank, and the outlet of the first heat exchange component is led out of the deaerator tank and then discharged outside;

[0009] The heat medium pipeline of the second heat exchange component is connected to the oxygen-free steam inlet, and the preheating pipeline is connected to the oxygen-containing water inlet. After being led out from the second heat exchange component, the oxygen-free steam inlet is connected to the oxygen-free steam disk at the bottom of the deoxidation head. After being led out from the second heat exchange component, the oxygen-containing water inlet is connected to the oxygen-containing water nozzle at the top of the deoxidation head. The oxygen-free steam disk and the oxygen-containing water nozzle are directly opposite to each other from bottom to top in the deoxidation head to form a convection deoxidation area.

[0010] Optionally, according to the boiler deoxygenated water preparation device of the utility model, the distance between the steam outlet at the top of the deoxygenation head and the oxygen-containing water nozzle is greater than or equal to one quarter of the overall height of the deoxygenation head.

[0011] Optionally, according to the boiler deoxygenated water preparation device of the utility model, the distance between the oxygen-containing water nozzle and the steam tray is greater than or equal to one half of the overall height of the deoxygenation head.

[0012] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, the top of the deoxygenation head is a spherical top.

[0013] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, the vacuum degree of the vacuum pump for evacuating the deoxygenation tank and the deoxygenation head is maintained at 0.4-0.6 atmospheres.

[0014] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, a vacuum gauge is installed in the deoxygenation tank to display the vacuum degree in the deoxygenation tank in real time.

[0015] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, the first heat exchange component is distributed in a serpentine shape in the deoxygenation tank.

[0016] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, the second heat exchange component is a shell and tube heat exchanger.

[0017] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, the oxygenated water inlet and the oxygen-free steam inlet are both installed with flow valves, and a temperature sensor is installed in the deoxygenation head.

[0018] Optionally, according to the boiler deoxygenated water preparation device described in the utility model, a water outlet pipe is provided at the bottom end of the deoxygenation tank.

[0019] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0020] 1. The original thermal deoxygenation system is transformed into a vacuum-based thermal deoxygenation system. Under a certain vacuum degree, the boiling point of water is lowered, the oxygen precipitation temperature is lowered, the required heat is reduced, and energy consumption is reduced.

[0021] 2. The vacuum pump also acts as a power pump in the system, sending the extracted hot steam into the deaerator through the first heat exchange component, and using the heat of the extracted hot steam to heat the water in the deaerator. After the water in the deaerator is heated, the equilibrium temperature of the entire deaerator can be raised. The reuse of this part of heat energy can effectively reduce the consumption of oxygen-free steam and reduce energy consumption.

[0022] 3. Based on the favorable environment of low energy consumption and low boiling point under the first two transformations, the actual temperature requirement for the instantaneous high temperature that the oxygen-free steam can generate in the deaerator head has decreased. Therefore, the oxygen-free steam can be preheated to the oxygen-containing water by using a heat exchanger before use. The initial temperature of the oxygen-containing water increases, and when the oxygen-containing water interacts with each other in the deaerator head, the efficiency and capacity of oxygen release can be improved.

[0023] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0025] Figure 1 This is a structural principle diagram of the boiler deoxygenated water preparation device in the utility model.

[0026] Explanation of the reference numerals: 1. Deaerator tank; 2. Deaerator head; 3. First heat exchange component; 4. Second heat exchange component; 5. Oxygenated water inlet; 6. Oxygenated water nozzle; 7. Oxygen-free steam inlet; 8. Oxygen-free steam tray; 9. Vacuum pump; 10. Steam exhaust pipe; 11. Water outlet pipe. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] according to Figure 1As shown, the utility model provides a boiler deoxygenated water preparation device, comprising a deoxygenation tank 1, a first heat exchange component 3, a second heat exchange component 4 and a vacuum pump 9;

[0033] A deaerator head 2 is provided at the upper end of the deaerator tank 1. The steam outlet at the top of the deaerator head 2 is connected to the inlet of the vacuum pump 9 through the steam exhaust pipe 10. The outlet of the vacuum pump 9 is connected to the inlet of the first heat exchange component 3. The first heat exchange component 3 is arranged below the liquid level in the deaerator tank 1, and the outlet of the first heat exchange component 3 is led out from the deaerator tank 1 and discharged outside.

[0034] The first heat exchange component 3 is used for heat exchange between the exhaust steam and the oxygen-free water to heat the oxygen-free water. After the oxygen-free water is heated, the self-balancing temperature inside the entire deaerator tank 1 is increased, so that the working temperature requirement in the upper deaerator head 2 is reduced, thereby reducing energy consumption.

[0035] The second heat exchange component 4 is a shell and tube heat exchanger, and the heat medium pipeline of the second heat exchange component 4 is connected to the oxygen-free steam inlet 7, and the preheating pipeline is connected to the oxygen-containing water inlet 5. After the oxygen-free steam inlet 7 is led out from the second heat exchange component 4, it is connected to the oxygen-free steam disk 8 at the bottom end of the deoxidation head 2. After the oxygen-containing water inlet 5 is led out from the second heat exchange component 4, it is connected to the oxygen-containing water nozzle 6 at the top end of the deoxidation head 2. The oxygen-free steam disk 8 and the oxygen-containing water nozzle 6 are directly opposite to each other from bottom to top in the deoxidation head 2 to form a convection deoxidation area.

[0036] Furthermore, the distance between the steam outlet at the top of the deaerator head 2 and the oxygen-containing water nozzle 6 is greater than or equal to one-fourth of the overall height of the deaerator head 2, and the top of the deaerator head 2 is a spherical top. The purpose is to raise the height of the top of the deaerator head 2 to avoid the vacuum pump 9 from interfering with the airflow of the oxygen-free steam during the vacuuming process, causing the oxygen-free steam to flow into the steam outlet too early.

[0037] Furthermore, the distance between the oxygen-containing water nozzle 6 and the steam tray is greater than or equal to half of the overall height of the deaerator head 2, which provides sufficient heat exchange space and improves the oxygen removal efficiency.

[0038] Furthermore, the vacuum pump 9 maintains the vacuum degree of the deaerator tank 1 and the deaerator head 2 at 0.4-0.6 atmospheres. A vacuum gauge is installed in the deaerator tank 1 to monitor the vacuum degree and adjust the parameters of the vacuum pump 9. Water can boil at 60-70 degrees or 70-80 degrees, thereby improving the efficiency of oxygen precipitation.

[0039] Furthermore, the first heat exchange component 3 is distributed in a serpentine shape in the deoxygenation tank 1, so as to increase the contact area between the first heat exchange component 3 and the oxygen-free water and ensure the heat exchange effect.

[0040] Furthermore, both the oxygenated water inlet 5 and the oxygen-free steam inlet 7 are equipped with flow valves, and a temperature sensor is installed in the deaerator head 2. In order to control the flow valves of each inlet according to the temperature in the deaerator head 2, the reaction temperature is within a set range.

[0041] Furthermore, a water outlet pipe 11 is provided at the bottom end of the deaerator tank 1 for supplying water to the boiler system.

[0042] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A boiler deoxygenated water preparation device, characterized in that: It includes a deoxygenation tank, a first heat exchange component, a second heat exchange component and a vacuum pump; A deaerator head is provided at the upper end of the deaerator tank, and a steam outlet at the top of the deaerator head is connected to the inlet of the vacuum pump through a steam exhaust pipe, and the outlet of the vacuum pump is connected to the inlet of the first heat exchange component, the first heat exchange component is arranged below the liquid level in the deaerator tank, and the outlet of the first heat exchange component is led out of the deaerator tank and then discharged outside; The heat medium pipeline of the second heat exchange component is connected to the oxygen-free steam inlet, and the preheating pipeline is connected to the oxygen-containing water inlet. After being led out from the second heat exchange component, the oxygen-free steam inlet is connected to the oxygen-free steam disk at the bottom of the deoxidation head. After being led out from the second heat exchange component, the oxygen-containing water inlet is connected to the oxygen-containing water nozzle at the top of the deoxidation head. The oxygen-free steam disk and the oxygen-containing water nozzle are directly opposite to each other from bottom to top in the deoxidation head to form a convection deoxidation area.

2. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The distance between the steam outlet at the top of the deaerator head and the oxygen-containing water nozzle is greater than or equal to one quarter of the overall height of the deaerator head.

3. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The distance between the oxygen-containing water nozzle and the steam tray is greater than or equal to half of the overall height of the deoxidation head.

4. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The top of the deoxidizing head is a spherical top.

5. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The vacuum pump evacuates the deaerator tank and the deaerator head to maintain a vacuum degree of 0.4-0.6 atmospheres.

6. The boiler deoxygenated water preparation device according to claim 5, characterized in that: A vacuum gauge is installed in the deaerator tank to display the vacuum degree in the deaerator tank in real time.

7. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The first heat exchange components are distributed in a serpentine manner in the deaeration tank.

8. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The second heat exchange component is a shell and tube heat exchanger.

9. The boiler deoxygenated water preparation device according to claim 1, characterized in that: The oxygen-containing water inlet and the oxygen-free steam inlet are both equipped with flow valves, and a temperature sensor is installed in the deoxidation head.

10. The boiler deoxygenated water preparation device according to claim 1, characterized in that: A water outlet pipe is arranged at the bottom end of the deaerator tank.

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