Sodium silicate kiln pool wall waste heat recovery device

Abstract

The utility model provides a sodium silicate kiln pool wall waste heat recovery device which comprises a flue and a fin structure erected in the flue, the fin structure comprises a plurality of first water pipes, and the flat first water pipes are continuously bent in a U shape and are arranged in parallel up and down; every two second water pipes form a group, vertical part ports of the two second water pipes are connected through the flange plates, and horizontal part ports of the second water pipes are mechanically connected with the first water pipe; the front contact area with smoke is enlarged through the flat first water pipe and the reducer pipe, under the long-term use condition, compared with a round pipeline, the flat first water pipe is more beneficial to scraping off soot on the first water pipe, it is prevented that the soot on the first water pipe is accumulated too much, and the waste heat recovery effect is affected, and according to the space size of a flue, the smoke can be recycled. And the fin structure is assembled by selecting the number of the first water pipes and the number of the reducer pipes.

Description

Technical Field

[0001] This utility model relates to a waste heat recovery device for the pool wall of a sodium silicate kiln, belonging to the field of sodium silicate kilns. Background Technology

[0002] Sodium silicate, commonly known as water glass, is available in liquid Na2O·nSiO2 and solid Na2O·nSiO2. Sodium silicate furnaces are the core industrial equipment used to produce sodium silicate. They are used to calcine raw materials at high temperatures to melt and react them, thereby generating sodium silicate melt.

[0003] When the high-temperature flue gas from the combustion of sodium silicate kiln is discharged from the outlet, it carries a large amount of heat, resulting in energy waste and potentially affecting the working environment around the kiln. In contrast, most existing technologies use heat exchangers or regenerative heat exchangers to recover heat from the discharged flue gas.

[0004] However, the following drawbacks exist: existing heat exchangers or regenerative heat exchangers cannot be assembled with fins according to the kiln conditions; high-temperature flue gas inevitably carries soot, which accumulates on the fins, affecting heat conversion efficiency; and existing fins are all cylindrical, making them difficult to clean.

[0005] Therefore, this utility model provides an assembled, easy-to-clean waste heat recovery device for the walls of sodium silicate kilns. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an assembled, easy-to-clean waste heat recovery device for the walls of sodium silicate kilns.

[0007] This utility model is implemented as follows:

[0008] A waste heat recovery device for the wall of a sodium silicate kiln includes a flue and a finned structure installed inside the flue. The finned structure includes a first water pipe, and there are several first water pipes. The flat first water pipes are continuously bent in a U-shape and arranged in parallel vertically.

[0009] The second water pipe and flange are in several quantities, with two pipes forming a group. The vertical ends of the two second water pipes are connected by the flange, and the horizontal ends of the second water pipes are mechanically connected to the first water pipe.

[0010] It also includes a sealant, which can be used to seal the end of the first water pipe.

[0011] As a further improvement, the fin structure also includes an inlet pipe and an outlet pipe, which are respectively installed at the inlet end of the topmost first water pipe and the outlet end of the bottommost first water pipe.

[0012] The finned structure also includes two flow control valves and two temperature detectors, which are installed on the inlet pipe and the outlet pipe, respectively.

[0013] As a further improvement, the fin structure also includes a timer, installed next to the inlet or outlet pipe.

[0014] As a further improvement, the fin structure also includes a reducing pipe installed at the connection between the first water pipe and the second water pipe to connect the first water pipe and the second water pipe.

[0015] As a further improvement, the first and second water pipes are made of metal.

[0016] As a further improvement, the first and second water pipes are made of stainless steel.

[0017] As a further improvement, the thickness of the first and second water pipes is between 0.3 mm and 1.2 mm.

[0018] As a further improvement, the temperature detector is a thermocouple thermometer or a resistance temperature sensor.

[0019] A sodium silicate kiln includes a waste heat recovery device for the kiln wall as described in any one of the claims.

[0020] The beneficial effects of this utility model are: the fin structure of this utility model expands the front contact area with flue gas through the flat-shaped first water pipe and the reducing pipe. Under long-term use, the flat-shaped first water pipe is more conducive to scraping off the soot on it than the round pipe, preventing too much soot from accumulating on the first water pipe and affecting the waste heat recovery effect. The number of first water pipes and reducing pipes can also be selected according to the size of the flue space to assemble the fin structure.

[0021] This invention uses a flow control valve, a timer, and a temperature detector to monitor the temperature of the inlet and outlet water and adjust the unit time. The unit time refers to how long it takes for water at room temperature to reach a temperature of 80 degrees Celsius or even 100 degrees Celsius in the flue, so as to realize a continuous heating and hot water recovery system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a waste heat recovery device for a sodium silicate kiln wall installed in a sodium silicate kiln, according to an embodiment of this utility model.

[0024] Figure 2 This is a plan view of a waste heat recovery device for the tank wall of a sodium silicate kiln provided in an embodiment of this utility model.

[0025] Figure 3 This is an exploded view of the structure of a waste heat recovery device for the tank wall of a sodium silicate kiln provided in this embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the principle of a waste heat recovery device for the tank wall of a sodium silicate kiln provided in this embodiment of the utility model.

[0027] Reference numerals: flue 10, finned structure 20, first water pipe 201, second water pipe 202, flange 203, plug 204, inlet pipe 205, outlet pipe 206, flow control valve 207, temperature detector 208, timer 209, reducer 210. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Reference Figures 1 to 4As shown, this embodiment provides a specific implementation of a waste heat recovery device for the wall of a sodium silicate kiln, including a flue 10 and a finned structure 20 installed inside the flue 10. The finned structure 20 includes several first water pipes 201. The flat first water pipes 201 are continuously U-shaped and arranged in parallel vertically. The area of ​​the flue gas generated in the sodium silicate kiln is...

[0031] There are several second water pipes 202 and flanges 203, with two pipes forming a group. The vertical ports of the two second water pipes 202 are connected by flanges 203. The horizontal ports of the second water pipes 202 are mechanically connected to the first water pipe 201.

[0032] The fin structure 20 also includes a plug 204, which can be used to seal the end of the first water pipe 201.

[0033] The fin structure 20 also includes a reducing pipe 210, which is installed at the connection between the first water pipe 201 and the second water pipe 202 to connect the first water pipe 201 and the second water pipe 202.

[0034] Based on the above technical solutions, the fin structure 20 of this utility model expands the front contact area with flue gas through the flat-shaped first water pipe 201 and the reducing pipe 210. Under long-term use, the flat-shaped first water pipe 201 is more conducive to scraping off the soot on it than the round pipe, preventing too much soot from accumulating on the first water pipe 201 and affecting the waste heat recovery effect. The number of first water pipes 201 and reducing pipes 210 can also be selected according to the size of the flue 10 space to assemble the fin structure 20.

[0035] More specifically, the fin structure 20 also includes an inlet pipe 205 and an outlet pipe 206, which are respectively installed at the inlet end of the topmost first water pipe 201 and the outlet end of the bottommost first water pipe 201 to form a water circulation loop for the entire fin structure 20. The design of water entering from the top and exiting from the bottom is more conducive to the inflow and outflow of water.

[0036] Based on the above technical solutions, the fin structure 20 also includes a flow control valve 207 and a temperature detector 208, two of each, which are installed on the inlet pipe 205 and the outlet pipe 206, respectively.

[0037] The fin structure 20 also includes a timer 209, which is installed next to the water inlet pipe 205 or the water outlet pipe 206.

[0038] In other words, this utility model uses the cooperation of the flow control valve 207, the timer 209 and the temperature detector 208 to monitor the temperature of the inlet and outlet water and adjust the unit time. The unit time mentioned here refers to how long it takes for water at room temperature to reach a temperature of 80 degrees Celsius or even 100 degrees Celsius in the flue, so as to realize the continuous heating and hot water recovery.

[0039] Furthermore, the flow control valve 207, timer 209, and temperature detector 208 of this utility model can also be connected to a controller or cloud processor via signal to achieve online timed control. The cloud processor mentioned here includes, but is not limited to, computers, mobile phone apps, etc.

[0040] In this embodiment, the first water pipe 201 and the second water pipe 202 are made of metal materials. Metal materials have the functions of high temperature resistance, corrosion resistance and high thermal conductivity. The higher the thermal conductivity, the shorter the unit time it takes for the water in the first water pipe 201 to reach 80 degrees Celsius or 100 degrees Celsius, thereby improving the utilization rate of flue gas recovery.

[0041] Furthermore, the first water pipe 201 and the second water pipe 202 are made of stainless steel; stainless steel is characterized by corrosion resistance, high strength and durability, and can withstand repeated use.

[0042] Based on the above technical solution, the thickness of the first water pipe 201 and the second water pipe 202 is between 0.3 mm and 1.2 mm to form a new embodiment. The optimal thickness of the first water pipe 201 and the second water pipe 202 is 0.5 mm, which ensures the thickness of the first water pipe 201 and the second water pipe 202 without reducing the heat conduction efficiency of the first water pipe 201 and the second water pipe 202.

[0043] In this embodiment, the temperature detector 208 is a thermocouple thermometer or a resistance temperature sensor. A thermocouple thermometer is a temperature measuring instrument based on the thermoelectric effect. It has a simple structure, wide measurement range, is easy to use, provides accurate and reliable temperature measurement, and its signal is easy to transmit remotely, automatically record, and centrally control, making it extremely common in industrial production. A resistance temperature sensor is a type of temperature sensor that measures temperature based on the principle that the resistance of a conductor or semiconductor changes with temperature.

[0044] A sodium silicate kiln includes a waste heat recovery device for the kiln pool wall, such as... Figure 1 As shown.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sodium silicate kiln pool wall waste heat recovery device, characterized by, It includes a flue (10) and a fin structure (20) installed inside the flue (10), wherein the fin structure (20) includes a first water pipe (201), the number of first water pipes (201) is several, the flat first water pipes (201) are continuously U-shaped and arranged in parallel up and down; The number of second water pipes (202) and flanges (203) is several, with two pipes forming a group. The vertical ports of the two second water pipes (202) are connected by flanges (203), and the horizontal ports of the second water pipes (202) are mechanically connected to the first water pipe (201). It also includes a plug (204) that can be used to seal the end of the first water pipe (201).

2. The sodium silicate kiln pool wall waste heat recovery device according to claim 1, characterized in that, The fin structure (20) also includes an inlet pipe (205) and an outlet pipe (206), which are respectively installed at the inlet end of the topmost first water pipe (201) and the outlet end of the bottommost first water pipe (201); The fin structure (20) also includes a flow control valve (207) and a temperature detector (208), two of each, which are installed on the inlet pipe (205) and the outlet pipe (206), respectively.

3. The sodium silicate kiln pool wall waste heat recovery device according to claim 2, characterized in that, The fin structure (20) also includes a timer (209) installed next to the inlet pipe (205) or the outlet pipe (206).

4. The sodium silicate kiln pool wall waste heat recovery device according to claim 1, characterized in that, The fin structure (20) also includes a reducing pipe (210) installed at the connection between the first water pipe (201) and the second water pipe (202) to connect the first water pipe (201) and the second water pipe (202).

5. The sodium silicate kiln pool wall waste heat recovery device according to claim 1, characterized in that, The first water pipe (201) and the second water pipe (202) are made of metal.

6. The sodium silicate kiln pool wall waste heat recovery device according to claim 5, characterized in that, The first water pipe (201) and the second water pipe (202) are made of stainless steel.

7. The sodium silicate kiln pool wall waste heat recovery device according to claim 1, characterized by, The thickness of the first water pipe (201) and the second water pipe (202) is between 0.3 mm and 1.2 mm.

8. The sodium silicate kiln pool wall waste heat recovery device according to claim 2, characterized by, The temperature detector (208) is a thermocouple thermometer or a resistance temperature sensor.

9. A sodium silicate kiln characterized by, The device includes the waste heat recovery device for the wall of a sodium silicate kiln as described in any one of claims 1 to 8.

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