Waste heat recovery device for active lime production

Abstract

The utility model discloses a waste heat recovery device for active lime production, which relates to the technical field of waste heat recovery, and comprises an inner shell, main heating pipes are fixedly mounted in the inner shell in a circumferential arrangement manner, and the rear ends of the outer walls of all the main heating pipes are simultaneously and fixedly connected with an input frame; the front ends of the outer walls of all the main heating pipes are fixedly connected with an input frame at the same time, the front side and the rear side of the inner wall of the inner shell are fixedly provided with spiral heating pipes, and the rear ends and the front ends of the outer walls of the spiral heating pipes penetrate through the outer wall of the inner shell and are communicated with the input frame and the output frame respectively. According to the device, cold air can be input into the outer shell from the air inlet pipe, and when the inner shell is heated, the outer wall of the inner shell can heat the cold air entering the outer shell at the same time, so that the device can utilize waste heat of high-temperature flue gas to produce hot water for daily use of people and warm air for heating residents at the same time, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, and in particular to a waste heat recovery device for the production of active lime. Background Technology

[0002] Quicklime, whose main component is calcium oxide, is usually produced by calcining natural rocks, whose main component is calcium carbonate, at high temperatures. This process decomposes the rocks into carbon dioxide and calcium oxide. The production of quicklime generates a large amount of high-temperature flue gas, which contains a lot of heat. If this high-temperature flue gas is directly discharged, it will result in a lot of energy waste. Therefore, it is necessary to recover the heat from the high-temperature flue gas.

[0003] Currently, waste heat in flue gas is generally recovered by heating water with high-temperature flue gas. This means that the heat in the high-temperature flue gas is used to heat room-temperature water into hot water for daily use, or to heat cold air to produce heating for residents. However, few waste heat recovery devices used in lime production can both heat water and produce heating, making the waste heat recovery method relatively simple.

[0004] Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a waste heat recovery device for quicklime production, which solves the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for quicklime production, comprising an inner shell, wherein main heating tubes are fixedly installed in a circumferential arrangement inside the inner shell, an input frame is fixedly connected to the rear end of the outer wall of all the main heating tubes, an output frame is fixedly connected to the front end of the outer wall of all the main heating tubes, and a spiral heating tube is fixedly installed on the front and rear sides of the inner shell, wherein the rear end and front end of the outer wall of the spiral heating tube penetrate the outer wall of the inner shell and are respectively connected to the input frame and the output frame, an inlet pipe is fixedly connected to the rear end of the outer wall of the inner shell, and an outlet pipe is fixedly connected to the front end of the side wall of the inner shell.

[0007] As a further technical solution of this utility model, a flue gas input pipe is fixedly installed at the rear end of the outer wall of the input frame, and a flue gas output pipe is fixedly installed at the front end of the outer wall of the output frame.

[0008] As a further technical solution of this utility model, an outer shell is fixedly installed on the side wall of the inner shell, an air inlet pipe is fixedly installed on the rear side of the upper end of the side wall of the outer shell, and an air outlet pipe is fixedly installed on the front side of the lower end of the side wall of the outer shell.

[0009] As a further technical solution of this utility model, support blocks are linearly arranged and fixedly installed on the lower end of the inner wall of the inner shell, and the upper end of the outer wall of all the support blocks is fixedly connected to the lower end of the outer wall of the spiral heating tube.

[0010] As a further technical solution of this utility model, a filter frame is fixedly installed on the input frame, an installation frame is detachably installed inside the filter frame, a filter screen is fixedly installed inside the installation frame, and a connecting plate is fixedly installed on the right end of the outer wall of the installation frame.

[0011] As a further technical solution of this utility model, the connecting plate is provided with a threaded countersunk hole that extends into the filter frame.

[0012] This invention provides a waste heat recovery device for quicklime production, which has the following advantages compared with the prior art:

[0013] 1. This utility model heats room temperature water entering the inner shell through the inner shell, and further heats the room temperature water in the inner shell through the spiral heating tube. The spiral heating tube has a larger contact area with the water than the straight pipe, thereby improving the heating efficiency of the device for room temperature water in the inner shell.

[0014] 2. When in use, this utility model can introduce cold air into the outer shell through the air inlet pipe. When the inner shell is heated, the outer wall of the inner shell can simultaneously heat the cold air entering the outer shell, thereby enabling the device to simultaneously utilize the waste heat of high-temperature flue gas to produce hot water for daily use and heating for residential heating, thus improving the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the front structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the inside right side of this utility model;

[0018] Figure 4 This is a front sectional view of the interior of this utility model;

[0019] Figure 5 This is a structural diagram of the mounting frame and connecting plate of this utility model.

[0020] In the diagram: 100, inner shell; 200, main heating tube; 210, input frame; 211, flue gas input pipe; 220, output frame; 221, flue gas output pipe; 300, spiral heating tube; 310, support block; 400, water inlet pipe; 410, water outlet pipe; 500, outer shell; 510, air inlet pipe; 520, air outlet pipe; 600, filter frame; 610, connecting plate; 611, threaded countersunk hole; 620, mounting frame; 630, filter screen. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution for a waste heat recovery device used in the production of quicklime: It includes an inner shell 100, with main heating tubes 200 fixedly installed circumferentially inside the inner shell 100. Input frames 210 are fixedly connected to the rear ends of the outer walls of all the main heating tubes 200, and output frames 220 are fixedly connected to the front ends of the outer walls of all the main heating tubes 200. Spiral heating tubes 300 are fixedly installed on the front and rear sides of the inner shell 100. The rear ends and front ends of the outer walls of the spiral heating tubes 300 penetrate the outer wall of the inner shell 100 and communicate with the input frames 210 and output frames 220 respectively. A water inlet pipe 400 is fixedly connected to the rear end of the outer wall of the inner shell 100, and a water outlet pipe 410 is fixedly connected to the front end of the side wall of the inner shell 100. Flue gas from the input frames 210 enters the main heating tubes 200 to heat the inner shell 100, thereby heating the room-temperature water entering the inner shell 100. Simultaneously, the flue gas from the input frames 210... The high-temperature flue gas in the inner shell 100 enters the spiral heating tube 300, which further heats the room-temperature water in the inner shell 100. The spiral heating tube 300 has a larger contact area with the water compared to the straight pipe, thereby further improving the heating efficiency of the room-temperature water in the inner shell 100. A flue gas inlet pipe 211 is fixedly installed at the rear end of the outer wall of the input frame 210, and a flue gas outlet pipe 221 is fixedly installed at the front end of the outer wall of the output frame 220. The high-temperature flue gas enters the input frame 210 through the flue gas inlet pipe 211 and exits the device through the flue gas outlet pipe 221. An outer shell 500 is fixedly installed on the side wall of the inner shell 100. An air inlet pipe 510 is fixedly installed on the rear side of the upper end of the side wall of the outer shell 500, and an air outlet pipe 520 is fixedly installed on the front side of the lower end of the side wall of the outer shell 500. When the inner shell 100 is heated, the outer wall of the inner shell 100 can simultaneously heat the cold air entering the outer shell 500.

[0023] like Figure 3 As shown, support blocks 310 are linearly arranged and fixedly installed on the lower end of the inner wall of the inner shell 100. The upper end of the outer wall of all support blocks 310 is fixedly connected to the lower end of the outer wall of the spiral heating tube 300. The support blocks 310 can provide auxiliary support and fixation for the spiral heating tube 300, thereby improving the connection stability of the spiral heating tube 300.

[0024] like Figure 1 , Figure 2 and Figure 5 As shown, a filter frame 600 is fixedly installed on the input frame 210. An installation frame 620 is detachably installed inside the filter frame 600. A filter screen 630 is fixedly installed inside the installation frame 620. A connecting plate 610 is fixedly installed on the right end of the outer wall of the installation frame 620. The high-temperature flue gas entering the input frame 210 can be filtered through the filter screen 630. The connecting plate 610 has a threaded countersunk hole 611 that extends into the filter frame 600. The threaded countersunk hole 611 allows personnel to easily disassemble and install the connecting plate 610, thereby facilitating the removal of the filter screen 630 for cleaning or replacement.

[0025] The working principle of this utility model is as follows: During use, high-temperature flue gas enters the input frame 210 through the flue gas input pipe 211, and room-temperature water enters the inner shell 100 through the water inlet pipe 400. The flue gas in the input frame 210 enters the main heating pipe 200 to heat the inner shell 100, thereby heating the room-temperature water entering the inner shell 100. At the same time, the high-temperature flue gas in the input frame 210 enters the spiral heating pipe 300, which further heats the room-temperature water in the inner shell 100. The spiral heating pipe 300 has a larger contact area with water than the straight pipe, thereby further improving the heating of the inner shell. The heating efficiency of room temperature water in the inner shell 100 can simultaneously allow cold air to be introduced into the outer shell 500 from the air inlet pipe 510. When the inner shell 100 is heated, the outer wall of the inner shell 100 can simultaneously heat the cold air entering the outer shell 500, so that the device can simultaneously utilize the waste heat of high temperature flue gas to produce hot water for daily use and heating for residential heating. Furthermore, the high temperature flue gas entering the input frame 210 can be filtered through the filter screen 630. The connecting plate 610 can be easily disassembled and installed by personnel through the threaded countersunk hole 611, thus making it convenient for personnel to remove the filter screen 630 for cleaning or replacement.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A waste heat recovery device for quicklime production, comprising an inner shell (100), characterized in that: The inner shell (100) is circumferentially arranged with main heating tubes (200) fixedly installed inside. The rear end of the outer wall of all the main heating tubes (200) is fixedly connected to an input frame (210). The front end of the outer wall of all the main heating tubes (200) is fixedly connected to an output frame (220). The inner wall of the inner shell (100) is fixedly installed with spiral heating tubes (300) on the front and rear sides. The rear end and front end of the outer wall of the spiral heating tubes (300) penetrate the outer wall of the inner shell (100) and are respectively connected to the input frame (210) and the output frame (220). The rear end of the outer wall of the inner shell (100) is fixedly connected to a water inlet pipe (400). The front end of the side wall of the inner shell (100) is fixedly connected to a water outlet pipe (410).

2. The waste heat recovery device for quicklime production according to claim 1, characterized in that, A flue gas inlet pipe (211) is fixedly installed at the rear end of the outer wall of the input frame (210), and a flue gas outlet pipe (221) is fixedly installed at the front end of the outer wall of the output frame (220).

3. The waste heat recovery device for quicklime production according to claim 1, characterized in that, An outer shell (500) is fixedly installed on the side wall of the inner shell (100). An air inlet pipe (510) is fixedly installed on the rear side of the upper end of the side wall of the outer shell (500), and an air outlet pipe (520) is fixedly installed on the front side of the lower end of the side wall of the outer shell (500).

4. A waste heat recovery device for quicklime production according to claim 1, characterized in that, The lower end of the inner wall of the inner shell (100) is fixedly mounted with support blocks (310) arranged linearly, and the upper end of the outer wall of all the support blocks (310) is fixedly connected to the lower end of the outer wall of the spiral heating tube (300).

5. A waste heat recovery device for quicklime production according to claim 1, characterized in that, A filter frame (600) is fixedly installed on the input box (210). An installation frame (620) is detachably installed inside the filter frame (600). A filter screen (630) is fixedly installed inside the installation frame (620). A connecting plate (610) is fixedly installed on the right end of the outer wall of the installation frame (620).

6. A waste heat recovery device for quicklime production according to claim 5, characterized in that, The connecting plate (610) has a threaded countersunk hole (611) that extends into the filter frame (600).

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