High-pressure steam utilization device

Abstract

The utility model relates to a high-pressure steam utilization device. The high-pressure steam utilization device comprises a surge bin, a power generation assembly communicated with the surge bin through a communicating pipe, a steam guide pipe communicated with the power generation assembly, and a steam-liquid separator communicated with the end, away from the power generation assembly, of the steam guide pipe. The top of the surge bin is communicated with a steam inlet pipe, a heat exchange pipe is fixedly arranged on the outer side wall of the steam guide pipe and wraps the outer circumference of the steam guide pipe along the extending path of the steam inlet pipe, one end of the heat exchange pipe is communicated with a liquid inlet pipe, and the other end of the heat exchange pipe is communicated with a liquid outlet pipe. According to the utility model, after steam enters the power generation assembly, the power generation assembly does work to generate electric energy, so that the pressure and temperature of the steam are reduced, the steam guide pipe plays a role in guiding the steam, and the heat exchange pipe wraps the outer side of the steam guide pipe, so that heat can be conducted into water in the heat exchange pipe, and the heat in the steam is led out for use; and heat exchange is realized for waste heat recovery.

Description

Technical Field

[0001] The utility model relates to the field of energy utilization, in particular to a high-pressure steam utilization device. Background Art

[0002] Waste heat is a secondary energy source. It is the product of the conversion process between primary energy and combustible materials. It is the heat left after a certain process is completed after the heat generated during the fuel combustion process. It is generally divided into the following seven categories: high-temperature flue gas waste heat, high-temperature steam waste heat, high-temperature slag waste heat, high-temperature product waste heat (including intermediate products), cooling medium waste heat, combustible waste gas waste heat, chemical reaction and residual carbon waste heat, condensed water waste heat, etc.

[0003] In the dilute nitric acid process, ammonia and air undergo a redox reaction in the oxidation furnace and release a large amount of heat, which will generate high-temperature and high-pressure steam through the waste heat boiler. However, the current utilization device uses steam to drive the steam turbine to generate energy, and the overall utilization rate is not high, resulting in resource waste and increased production costs. Utility Model Content

[0004] In view of this, the utility model aims to provide a high-pressure steam utilization device to solve the problems in the prior art.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A high-pressure steam utilization device comprises a buffer chamber, a power generation component connected to the buffer chamber through a connecting pipe, a steam guide pipe connected to the power generation component, and a steam-liquid separator connected to an end of the steam guide pipe away from the power generation component;

[0007] A steam inlet pipe is connected to the top of the buffer bin, a heat exchange pipe is fixedly provided on the outer wall of the steam guide pipe, the heat exchange pipe is wrapped around the outer circumference of the steam guide pipe along the extension path of the steam inlet pipe, one end of the heat exchange pipe is connected to a liquid inlet pipe, and the other end is connected to a liquid outlet pipe.

[0008] Furthermore, the power generation assembly includes a power shaft, a motor, a first housing fixedly connected to one side of the motor, and a second housing fixedly connected to one side of the first housing, one end of the power shaft is connected to the output shaft of the motor, and the other end passes from the first housing to the second housing, a rotating disk is fixedly provided on the outer circumference of the power shaft in the second housing, and a plurality of fan blades are provided at intervals around the contour of the rotating disk;

[0009] The connecting pipe is connected to the second shell, and the connecting position faces the fan blades. The steam guide pipe is connected to the second shell.

[0010] Furthermore, a plurality of slots are provided at intervals on the outer circumference of the rotating disk, and the fan blades are detachably connected in the slots.

[0011] Furthermore, the fan blade has an arc-shaped cross-section.

[0012] Furthermore, the steam guide pipe is arranged in a wave shape.

[0013] Furthermore, one end of the steam inlet pipe extends into the interior of the buffer bin, and the end is connected to a nozzle, and the nozzle faces the inner wall of the buffer bin.

[0014] Furthermore, the connecting pipe is connected with a pressure regulating valve.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] In the utility model, the buffer bin plays a buffering role, which can cool the steam to an appropriate range, which is conducive to the subsequent utilization of waste heat. After the steam enters the power generation component, the power generation component will work to generate electricity, thereby reducing the pressure and temperature of the steam. The steam pipe guides the steam, and the heat exchange tube is wrapped on the outside of the steam pipe, which can conduct heat to the water inside the heat exchange tube, draw out the heat in the steam for utilization, and realize heat exchange for waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the power generation component of the utility model;

[0020] Figure 3 This is a schematic diagram of the fan blade and slot structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the positions of the steam guide pipe and the heat exchange pipe of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the pressure regulating valve of the utility model;

[0023] Figure 6 This is a schematic diagram of the nozzle structure of the utility model.

[0024] Description of reference numerals:

[0025] 1. Buffer bin; 101. Steam inlet pipe; 102. Nozzle; 103. Connecting pipe; 104. Pressure regulating valve; 2. Power generation assembly; 201. Motor; 202. Power shaft; 203. First shell; 204. Second shell; 205. Rotating disk; 206. Slot; 207. Fan blade; 3. Steam guide pipe; 4. Heat exchange pipe; 401. Liquid inlet pipe; 402. Liquid outlet pipe; 5. Gas-liquid separator. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0029] The following will refer to the attached Figures 1 to 6 The utility model is described in detail in conjunction with the embodiments.

[0030] In general, the utility model relates to a high-pressure steam utilization device, which is used to utilize the high-temperature and high-pressure steam generated in the dilute nitric acid process to reduce energy waste. It includes a buffer bin 1, a power generation component 2 connected to the buffer bin 1 through a connecting pipe 103, a steam guide pipe 3 connected to the power generation component 2, and a vapor-liquid separator connected to the end of the steam guide pipe 3 away from the power generation component 2; the top of the buffer bin 1 is connected with a steam inlet pipe 101, and the outer wall of the steam guide pipe 3 is fixed with a heat exchange pipe 4, which is wrapped around the outer circumference of the steam guide pipe 3 along the extension path of the steam inlet pipe 101, and one end of the heat exchange pipe 4 is connected to a liquid inlet pipe 401, and the other end is connected to a liquid outlet pipe 402.

[0031] In this embodiment, the buffer bin 1 plays a buffering role and can cool the steam to an appropriate range, which is beneficial to the subsequent utilization of waste heat. After the steam enters the power generation component 2, the power generation component 2 will work to generate electricity, thereby reducing the pressure and temperature of the steam. The steam pipe 3 guides the steam. The heat exchange tube 4 is wrapped on the outside of the steam pipe 3 and can conduct heat to the water inside the heat exchange tube 4, draw out the heat in the steam for utilization, and realize heat exchange for waste heat recovery.

[0032] When implementing it, Figure 1 As shown, the steam self-heating furnace is first introduced into the buffer bin 1 through the steam inlet pipe 101. Due to the sudden increase in space, the steam will reduce pressure and flow rate, and the temperature will also be reduced to prevent excessive temperature and pressure from burdening the power generation component 2. After entering the power generation component 2, it generates electricity, and then enters the steam guide pipe 3 to exchange heat through the heat exchange pipe 4 to conduct the heat in the steam, and finally enters the gas-liquid separator 5 to separate the liquid component in the steam.

[0033] Water enters the heat exchange tube 4 from the liquid inlet pipe 401, and after heat conduction, flows out of the heat exchange tube 4 from the liquid outlet pipe 402. The water that has undergone heat conduction can be used in the heating process of dilute nitric acid production.

[0034] It should be noted that after the steam passes through the power generation component 2 and the heat pipe, most of the pressure and heat have been lost. In order to recover the liquid in the steam and prevent direct discharge from affecting the external environment, the gas-liquid separator 5 can effectively separate the liquid component in the steam.

[0035] Specifically, its working principle is mainly based on the difference in specific gravity or density between liquid and gas in steam or compressed air. By making the steam suddenly change direction or deflect multiple times during the flow, the water droplets contained in the steam are separated and the water content in the steam is reduced. When the steam enters the separator, the flow direction of the gas changes due to encountering a baffle or a specific deflection structure, and the liquid will adhere to the baffle or wall and converge downward due to inertia and gravity. The separated water droplets will eventually gather at the bottom of the separator and be discharged through the equipped steam trap. For details, please refer to the existing gas-liquid separator 5.

[0036] As a preferred structure of the steam pipe 3, Figure 4 As shown, in this embodiment, the steam guide pipe 3 is arranged in a wave shape, which can increase the contact time between the heat exchange tube 4 and the steam guide pipe 3 and reduce the occupied area.

[0037] Among them, Figure 2 and Figure 3As shown, the power generation assembly 2 includes a power shaft 202, a motor 201, a first housing 203 fixedly connected to one side of the motor 201, and a second housing 204 fixedly connected to one side of the first housing 203. One end of the power shaft 202 is connected to the output shaft of the motor 201, and the other end passes from the first housing 203 to the second housing 204. A rotating disk 205 is fixedly provided on the outer circumference of the power shaft 202 in the second housing 204, and a plurality of fan blades 207 are provided at intervals around the contour of the rotating disk 205. In addition, the connecting pipe 103 is connected to the second housing 204, and the connecting position is opposite to the fan blades 207, and the steam guide pipe 3 is connected to the second housing 204.

[0038] In a specific implementation, after the steam enters the second housing 204, it will hit the fan blades 207 to drive the rotating disk 205 to rotate, and then drive the power shaft 202 to rotate, drive the motor 201 to rotate, and generate electrical energy. It should be noted that the motor 201 is a generator 201. In addition, the portion of the power shaft 202 that is rotatably connected to the inner side wall of the second housing 204 is the same length as that in the first housing 203, so that the stability of the power shaft 202 during power transmission can be facilitated.

[0039] It needs to be further explained that if Figure 3 As shown, in order to facilitate the installation and removal of the fan blades 207 and to adapt to different working requirements, in this embodiment, a plurality of slots 206 are provided at intervals on the outer circumference of the rotating disk 205, and the fan blades 207 are detachably connected in the slots 206. The specific connection method is that the fan blades 207 can be connected in the slots 206 by snapping, or fixed by screws, etc.

[0040] As a preferred example, Figure 3 As shown, the fan blade 207 has an arc-shaped cross section, which can facilitate the high-pressure steam to drive the fan blade 207 to rotate. Figure 5 As shown, a pressure regulating valve 104 is preferably provided on the connecting pipe 103 to adjust the pressure of the steam in the connecting pipe 103 to be within a suitable pressure range to prevent damage to the fan blades 207 and the rotor disk in the power generation component 2.

[0041] like Figure 6 As shown, in order to increase the buffering effect in the buffer tank, in this embodiment, one end of the steam inlet pipe 101 extends into the buffer bin 1, and the end is connected to a nozzle 102, which faces the inner wall of the buffer bin 1. The ejected steam can hit the inner wall of the buffer bin 1 to reduce its flow rate. The nozzle 102 is a high temperature and high pressure resistant nozzle 102.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-pressure steam utilization device, characterized in that: It comprises a buffer bin (1), a power generation component (2) connected to the buffer bin (1) via a connecting pipe (103), a steam guide pipe (3) connected to the power generation component (2), and a steam-liquid separator connected to an end of the steam guide pipe (3) away from the power generation component (2); The top of the buffer bin (1) is connected to a steam inlet pipe (101), an outer wall of the steam guide pipe (3) is fixedly provided with a heat exchange pipe (4), the heat exchange pipe (4) is arranged along the extension path of the steam inlet pipe (101) and wrapped around the outer circumference of the steam guide pipe (3), one end of the heat exchange pipe (4) is connected to a liquid inlet pipe (401), and the other end is connected to a liquid outlet pipe (402).

2. A high pressure steam utilization device according to claim 1, characterized in that: The power generation assembly (2) comprises a power shaft (202), a motor (201), a first housing (203) fixedly connected to one side of the motor (201), and a second housing (204) fixedly connected to one side of the first housing (203); one end of the power shaft (202) is connected to the output shaft of the motor (201), and the other end passes from the first housing (203) into the second housing (204); a rotating disk (205) is fixedly provided on the outer circumference of the power shaft (202) in the second housing (204), and a plurality of fan blades (207) are provided at intervals around the contour of the rotating disk (205); The connecting pipe (103) is connected to the second outer shell (204), and the connecting position is opposite to the fan blade (207), and the steam guide pipe (3) is connected to the second outer shell (204).

3. A high pressure steam utilization device according to claim 2, characterized in that: A plurality of slots (206) are arranged at intervals on the outer circumference of the rotating disk (205), and the fan blades (207) are detachably connected in the slots (206).

4. A high pressure steam utilization device according to claim 2, characterized in that: The fan blade (207) has an arc-shaped cross section.

5. The high-pressure steam utilization device according to claim 1, characterized in that: The steam guide pipe (3) is arranged in a wave shape.

6. The high-pressure steam utilization device according to claim 1, characterized in that: One end of the steam inlet pipe (101) extends into the interior of the buffer bin (1), and the end is connected to a nozzle (102), and the nozzle (102) faces the inner wall of the buffer bin (1).

7. The high-pressure steam utilization device according to claim 1, characterized in that: The connecting pipe (103) is connected to a pressure regulating valve (104).

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