Horizontal energy-saving waste heat boiler

Abstract

The horizontal type energy-saving waste heat boiler comprises a boiler body, a superheater, an energy saver and a condenser, a body front smoke box and a body rear smoke box are arranged on the front side and the rear side of the boiler body respectively, and a plurality of first smoke pipes are connected to the front side wall and the rear side wall of the boiler body in a penetrating mode; the superheater is of a hollow cylindrical structure and is connected to a port of the rear smoke box of the body; a plurality of groups of second smoke pipes are arranged in the superheater; the energy saver is of a hollow cylindrical structure and is connected to the other port of the superheater, the energy saver is connected with the boiler body through a pipeline, and a plurality of sets of third smoke pipes are arranged in the energy saver; the condenser is of a hollow cylindrical structure, a plurality of sets of fourth smoke pipes are arranged in the condenser, and the condenser is connected with the softened water tank through a pipeline. The utility model aims to provide a horizontal energy-saving waste heat boiler to improve the utilization rate of waste heat so as to improve the heat efficiency of the boiler.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to a horizontal energy-saving waste heat boiler. Background Technology

[0002] Boilers are one of the most commonly used pieces of equipment in industry, providing hot water and steam for production processes. Energy saving and environmental protection are the two most important characteristics of boilers. In terms of environmental protection, clean energy sources such as oil or gas can be used as fuel. In terms of energy saving, it depends on the boiler's own structure. The direct emission of flue gas after combustion in the boiler results in the waste of flue gas waste heat. Existing boiler designs are unreasonable, with low heat exchange areas, leading to low boiler thermal efficiency. Therefore, this utility model provides a horizontal energy-saving waste heat boiler to improve waste heat utilization and thus improve boiler thermal efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a horizontal energy-saving waste heat boiler to improve the waste heat utilization rate, thereby improving the boiler's thermal efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A horizontal energy-saving waste heat boiler includes a boiler body, a superheater, an economizer, and a condenser, wherein...

[0006] The boiler body is provided with a front smoke box and a rear smoke box on the front and rear sides respectively, and multiple first smoke pipes are connected through the front and rear side walls of the boiler body.

[0007] The superheater is a hollow cylindrical structure and is connected to the rear smoke box port of the main body. Multiple sets of second smoke pipes are provided in the superheater.

[0008] The energy saver is a hollow cylindrical structure and is connected to another port of the superheater. The energy saver is connected to the boiler body through a pipe, and multiple sets of third flue pipes are installed in the energy saver.

[0009] The condenser is a hollow cylindrical structure and has multiple sets of fourth flue pipes installed inside. The condenser is connected to a soft water tank via pipes.

[0010] Furthermore, the outer surfaces of the boiler body, the front smoke box, and the rear smoke box are all provided with a heat insulation layer, and a body base is provided at the bottom of the boiler body.

[0011] Furthermore, the rear smoke box and the superheater are connected by a connecting flue, the superheater and the economizer are connected by a flange, and the economizer and the condenser are connected by a diversion flue.

[0012] Furthermore, the boiler body is provided with a pipe seat assembly, which includes a pressure gauge pipe seat, a safety valve pipe seat, a main steam valve pipe seat, an auxiliary steam valve pipe seat, and a drain pipe seat, wherein the drain pipe seat is located at the bottom of the boiler body.

[0013] Furthermore, a smoke inlet temperature measuring tube is provided on the front smoke box of the main body.

[0014] Furthermore, valves, instruments, and ladders are also installed on the outside of the boiler body.

[0015] Furthermore, the superheater, energy saver, and condenser are all equipped with drain pipes at their bottoms.

[0016] Furthermore, the second, third, and fourth smoke tubes are all spiral finned tubes.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Compared with existing technologies, the waste heat boiler provided in this application optimizes the waste heat utilization design of the boiler, dividing it into four modules: boiler body, superheater, economizer, and condenser. The boiler body is equipped with a first flue pipe for heat exchange utilization of flue gas. Spiral finned tubes are installed in the superheater, economizer, and condenser to increase the heat transfer area of ​​the flue gas. The economizer is connected to the boiler body through a pipeline, allowing the economizer to receive water from the boiler and the outlet water to enter the boiler body. This enables the water energy to circulate between the economizer and the boiler body, making more efficient use of the waste heat of the flue gas and thus improving the thermal efficiency of the boiler. The condenser is connected to a soft water tank through a pipeline, and a circulating pump drives low-temperature softened water to circulate in the condenser tubes, thereby further reducing the boiler exhaust temperature and improving the boiler thermal efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the longitudinal section of this utility model.

[0020] Figure 2 for Figure 1 A cross-sectional schematic diagram of CC.

[0021] Figure 3 for Figure 1 A schematic diagram of the cross-section of BB.

[0022] In the diagram, 1-front smoke box of the main body, 2-boiler body, 3-insulation layer, 4-first smoke pipe, 5-temperature measuring pipe at the inlet of the smoke, 6-pipe seat assembly, 61-pressure gauge pipe seat, 62-safety valve pipe seat, 63-main steam valve pipe seat, 64-auxiliary steam valve pipe seat, 65-drain pipe seat, 7-rear smoke box of the main body, 8-connecting flue, 9-superheater, 10-second smoke pipe, 11-energy saver, 12-third smoke pipe, 13-condenser, 14-fourth smoke pipe, 15-main body base, 16-ladder, 17-valve instruments, 18-diverting flue, 19-drain pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] refer to Figure 1-3 As shown, this application proposes a horizontal energy-saving waste heat boiler, including a boiler body 2, a superheater 9, an economizer 11, and a condenser 13, wherein,

[0025] The boiler body 2 is provided with a front smoke box 1 and a rear smoke box 7 on its front and rear sides, respectively. Specifically, the boiler body 2 has an inner diameter of φ2800mm, a wall thickness of 18mm, and is made of Q245R material. Multiple first smoke pipes 4 are connected through the front and rear side walls of the boiler body 2. Specifically, the first smoke pipes 4 are bundles of 578 threaded smoke pipes with a diameter of φ57mm and a wall thickness of 3mm, made of 20GB / T3087-2008 material. This results in a convective heating area of ​​490.8m². 2 To ensure strength, 24 diagonal tie rods with a diameter of φ45mm are also installed inside the pot shell to connect the shell and the tube sheet;

[0026] The superheater 9 is a hollow cylindrical structure and is connected to the port of the rear smoke box 7 of the main body. Multiple sets of second smoke pipes 10 are provided in the superheater 9. Preferably, a safety valve pipe seat, a water spray desuperheating pipe seat, a pressure gauge pipe seat and a temperature measuring point are provided on the superheater 9.

[0027] The energy-saving device 11 is a hollow cylindrical structure and is connected to the other end of the superheater 9. The energy-saving device 11 is connected to the boiler body 2 through a pipe, so that the energy-saving device 11 is supplied with water from the boiler body 2 and the water outlet enters the boiler body 2. Multiple sets of third flue pipes 12 are provided in the energy-saving device 11.

[0028] The condenser 13 is a hollow cylindrical structure and has multiple sets of fourth flue pipes 14. The condenser 13 is connected to a soft water tank through a pipe, and a circulating pump drives low-temperature softened water to circulate in the tubes of the condenser 13, thereby further reducing the boiler exhaust temperature and improving the boiler thermal efficiency.

[0029] The outer surfaces of the boiler body 2, the front smoke box 1, and the rear smoke box 7 are all provided with a heat insulation layer 3. More specifically, the heat insulation layer 3 includes an aluminum silicate insulation layer, a refractory casting layer, etc., and a body base 15 is provided at the bottom of the boiler body 2.

[0030] Furthermore, the rear smoke box 7 and the superheater 9 are connected by a connecting flue 8, the superheater 9 and the economizer 11 are connected by a flange, and the economizer 11 and the condenser 13 are connected by a turning flue 18. When connecting the above components, it is preferable to embed an asbestos board gasket or asbestos rope at the interface flange to ensure the sealing between the flues.

[0031] Furthermore, the boiler body 2 is equipped with a pipe seat assembly 6, which includes a pressure gauge pipe seat 61, a safety valve pipe seat 62, a main steam valve pipe seat 63, an auxiliary steam valve pipe seat 64, and a drain pipe seat 65. The drain pipe seat 65 is located at the bottom of the boiler body 2. Corresponding valves or instruments are installed on this pipe seat assembly 6. More specifically, a flue gas inlet temperature measuring tube 5 is installed on the front smoke box 1 of the boiler body, and a flue gas outlet temperature measuring tube is installed at the condenser 13 port to measure the inlet and outlet flue gas temperatures. A valve instrument 17 and a ladder 16 are also installed on the outside of the boiler body 2. The valve instrument 17 includes high and low water level alarms, low water level interlock protection, and overpressure alarms, etc., but this utility model does not limit these features.

[0032] The superheater 9, energy saver 11 and condenser 13 are all equipped with drain pipes 19 at their bottoms.

[0033] Furthermore, the second smoke tube 10, the third smoke tube 12, and the fourth smoke tube 14 are all spiral finned tubes. Specifically, the aforementioned smoke tubes are spiral finned tubes with a diameter of φ32mm, a wall thickness of 3mm, a fin height of 15mm, a fin thickness of 1mm, and a pitch of 6mm. The tube and fin materials are all 09CrCuSb.

[0034] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A horizontal energy-saving waste heat boiler, characterized in that: It includes the boiler body (2), superheater (9), economizer (11), and condenser (13), among which, The boiler body (2) is provided with a front smoke box (1) and a rear smoke box (7) on the front and rear sides respectively, and multiple first smoke pipes (4) are connected through the front and rear side walls of the boiler body (2). The superheater (9) is a hollow cylindrical structure and is connected to the port of the rear smoke box (7) of the main body. Multiple sets of second smoke pipes (10) are provided in the superheater (9). The energy saver (11) is a hollow cylindrical structure and is connected to the other end of the superheater (9). The energy saver (11) is connected to the boiler body (2) through a pipe. Multiple sets of third flue pipes (12) are provided in the energy saver (11). The condenser (13) is a hollow cylindrical structure and has multiple sets of fourth flue pipes (14) installed in it. The condenser (13) is connected to the soft water tank through a pipe.

2. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The outer surfaces of the boiler body (2), the front smoke box (1) and the rear smoke box (7) are all provided with a heat insulation layer (3), and a body base (15) is provided at the bottom of the boiler body (2).

3. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The main body rear smoke box (7) and superheater (9) are connected by a connecting flue (8), the superheater (9) and energy saver (11) are connected by a flange, and the energy saver (11) and condenser (13) are connected by a turning flue (18).

4. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The boiler body (2) is provided with a pipe seat assembly (6), which includes a pressure gauge pipe seat (61), a safety valve pipe seat (62), a main steam valve pipe seat (63), an auxiliary steam valve pipe seat (64), and a drain pipe seat (65). The drain pipe seat (65) is located at the bottom of the boiler body (2).

5. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The front smoke box (1) of the main body is equipped with a smoke inlet temperature measuring tube (5).

6. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The boiler body (2) is also equipped with valve instruments (17) and ladders (16).

7. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The superheater (9), energy saver (11) and condenser (13) are all equipped with drain pipes (19) at the bottom.

8. A horizontal energy-saving waste heat boiler according to claim 1, characterized in that: The second smoke tube (10), the third smoke tube (12) and the fourth smoke tube (14) are all spiral finned tubes.

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