Waste heat recovery device for black water flash steam

Abstract

The utility model relates to the technical field of waste heat recovery devices, and discloses a waste heat recovery device for black water flash steam. The black water flash steam waste heat recovery device comprises a tank body, an annular air pipe is arranged on the inner wall of the tank body, air blowing pipes are evenly arranged on the inner wall of the annular air pipe, a partition plate is arranged on the top wall of the annular air pipe, a heat exchange mechanism is arranged on the top wall of the partition plate, and a rotating rod is arranged on the bottom wall of the partition plate; according to the scheme, the annular air pipe, the partition plate, the fan blades and other devices are arranged to be matched, softened water can be conveniently stirred through the device, the softened water makes full contact with the heat exchange mechanism, heat can be conveniently and evenly conducted into the softened water, and the heat exchange efficiency of the device can be improved; through cooperation of the heat exchange pipe, the gas disc, the exhaust valve and other devices, the device can conveniently conduct heat in steam into water through the heat exchange pipe, the heat in flash steam is recycled, and energy waste is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery devices, in particular to a waste heat recovery device for black water flash steam. Background Art

[0002] In the coal chemical production process, a large amount of high-temperature slag-containing black water is generated. The black water enters the high-pressure flash tank to generate black water flash steam. The waste heat recovery of black water flash steam is an important energy-saving and emission reduction content of coal chemical enterprises. The steam in the waste heat recovery device transfers heat to softened water through the heat exchange pipe, and heats the low-temperature softened water to achieve the effect of heat recovery. In the existing device, the softened water on the inner wall mostly remains stationary during heat exchange, and it is difficult to heat the softened water evenly during heat exchange, resulting in reduced heat exchange efficiency. For this reason, we propose a waste heat recovery device for black water flash steam. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a waste heat recovery device for black water flash steam, which effectively solves the problem that in the existing device, the softened water on the inner wall mostly remains stationary during heat exchange, making it difficult to heat the softened water evenly during heat exchange, resulting in reduced heat exchange efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste heat recovery device for black water flash steam, comprising a tank body, an inner wall of the tank body is provided with an annular air pipe, the inner wall of the annular air pipe is evenly provided with an air blowing pipe, the top wall of the annular air pipe is provided with a partition, the top wall of the partition is provided with a heat exchange mechanism, the bottom wall of the partition is provided with a rotating rod, the bottom end of the rotating rod is provided with a fan blade, the top wall of the rotating rod is provided with a stirring blade, the stirring blade is located on the upper side of the partition, the bottom wall of the annular air pipe is provided with a liquid collecting pipe, the bottom wall of the tank body is provided with a drain valve, the drain valve is connected to the liquid collecting pipe, the lower side of the left side wall of the tank body is provided with an air inlet valve, the air inlet valve is connected to the annular air pipe, the upper side of the left side wall of the tank body is provided with a liquid inlet valve, and the lower side of the right side wall of the tank body is provided with a liquid outlet valve.

[0005] Preferably, the heat exchange mechanism comprises a heat exchange tube, the heat exchange tube is evenly arranged on the top wall of the partition, a gas disk is arranged at the top end of the heat exchange tube, an exhaust valve is arranged on the top wall of the tank body, and the exhaust valve is connected to the gas disk.

[0006] Preferably, a guide plate is provided on the bottom wall of the inner cavity of the gas disk, and the top wall of the guide plate is inclined.

[0007] Preferably, the outer wall of the heat exchange tube is evenly provided with heat exchange fins, and the heat exchange fins are arranged in a ring shape.

[0008] Preferably, the liquid collecting pipe is arranged in a funnel shape, and the liquid collecting pipe is connected to the liquid drain valve.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The waste heat recovery device of black water flash steam can facilitate the device to stir the softened water by arranging the ring air pipe, the partition and the fan blade, so that the softened water can fully contact with the heat exchange mechanism, and the heat can be evenly transferred to the softened water, which is beneficial to improve the heat exchange efficiency of the device;

[0011] 2. The waste heat recovery device of the black water flash steam can facilitate the device to transfer the heat in the steam to the water through the heat exchange pipe by arranging the heat exchange pipe, the gas plate and the exhaust valve and other devices, so as to recycle the heat in the flash steam and reduce the waste of energy;

[0012] 3. The waste heat recovery device of the black water flash steam can facilitate the heat extraction from the heat exchange tubes by arranging heat exchange fins, heat exchange tubes and gas plates, and increase the contact area with water through the heat exchange fins, which is beneficial to improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

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

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the tank body of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified view of part A in FIG.

[0018] In the figure: 100, tank body; 101, annular air pipe; 102, air blowing pipe; 103, partition; 104, heat exchange mechanism; 105, rotating rod; 106, fan blade; 107, stirring blade; 108, collecting pipe; 109, drain valve; 110, air inlet valve; 111, liquid inlet valve; 112, liquid outlet valve; 113, heat exchange tube; 114, gas disk; 115, exhaust valve; 116, guide plate; 117, heat exchange fin. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Depend on Figure 1 , Figure 2 and Figure 3The utility model provides a waste heat recovery device for black water flash steam. The inner wall of the tank body 100 is fixedly connected with a ring air pipe 101, through which the flash steam is conveniently guided. The inner wall of the ring air pipe 101 is evenly fixedly connected with a blowing pipe 102, through which the blowing pipe 102 is convenient for blowing operation, and the fan blade 106 is convenient for blowing to rotate. The top wall of the ring air pipe 101 is fixedly connected with a partition 103, through which the ring air pipe 101 is convenient for The top wall of the partition 103 is sealed, the top wall of the partition 103 is fixedly connected to a heat exchange mechanism 104, through which the heat is easily transferred out, so as to facilitate the heat recovery and utilization, the bottom wall of the partition 103 is rotatably connected to a rotating rod 105, through which the rotating rod 105 is convenient to drive the stirring blade 107 to rotate, the bottom end of the rotating rod 105 is fixedly connected to a fan blade 106, through which the fan blade 106 is convenient to drive the rotating rod 105 to rotate, and the top wall of the rotating rod 105 is fixedly connected to A stirring blade 107 is connected, and the softened water is stirred by the stirring blade 107. The stirring blade 107 is located on the upper side of the partition 103. The bottom wall of the annular air pipe 101 is fixedly connected to a liquid collecting pipe 108, and the condensed liquid is collected by the liquid collecting pipe 108. The bottom wall of the tank body 100 is fixedly connected to a drain valve 109, and the condensed water is discharged by the drain valve 109. The drain valve 109 is connected to the liquid collecting pipe 108. The left side of the tank body 100 An air inlet valve 110 is fixedly connected to the lower side of the wall, through which the steam generated by the black water is conveniently passed into the annular air pipe 101, and the air inlet valve 110 is connected to the annular air pipe 101. A liquid inlet valve 111 is fixedly connected to the upper side of the left wall of the tank body 100, through which the softened water is conveniently passed into the inner cavity of the device, and a liquid outlet valve 112 is fixedly connected to the lower side of the right wall of the tank body 100, through which the softened water after heating is conveniently discharged;Softened water is injected into the inner cavity of the device through the liquid inlet valve 111, and the high-temperature black water vapor generated in the coal production process is connected to the air inlet valve 110. The air inlet valve 110 is opened to pass the steam into the annular air pipe 101, and the steam is introduced into the blowing pipe 102 through the annular air pipe 101. The exhaust through the blowing pipe 102 drives the fan blade 106 to rotate, and the fan blade 106 drives the rotating rod 105 to rotate, and the rotating rod 105 drives the stirring blade 107 to rotate. The stirring blade 107 stirs the softened water, so that the softened water is fully in contact with the heat exchange mechanism 104, and the softened water can be fully contacted with the heat exchange mechanism 104 by opening the liquid outlet valve 112. The liquid after heating is discharged for use, which can make the device convenient for stirring the softened water, so that the softened water can fully contact with the heat exchange mechanism 104, and it is convenient to evenly transfer the heat to the softened water, which is beneficial to improve the heat exchange efficiency of the device. The heat exchange mechanism 104 includes a heat exchange tube 113, and the heat exchange tube 113 is evenly fixedly connected to the top wall of the partition 103. The heat is conveniently transferred to the softened water through the heat exchange tube 113. The top of the heat exchange tube 113 is fixedly connected to a gas disk 114, and the steam is collected through the gas disk 114. The top wall of the tank body 100 is fixedly connected to an exhaust valve 115, and the exhaust valve 115 is used to collect the steam. 15 discharges the steam after the heat exchange is completed, and the exhaust valve 115 is connected to the gas disk 114; the heat is transferred to the water through the heat exchange pipe 113, which is convenient for recovering the heat in the steam. After the flash steam heat exchange is completed, the steam is recovered by opening the gas disk 114, and the steam is discharged by opening the exhaust valve 115, which can make the device convenient for transferring the heat in the steam to the water through the heat exchange pipe 113, which is used to recover the heat in the flash steam and reduce energy waste. The bottom wall of the inner cavity of the gas disk 114 is fixedly connected with a guide plate 116, and the top wall of the guide plate 116 is inclined. By setting the guide plate The flow plate 116 facilitates the diversion of the liquid generated by the condensation of steam, so that the liquid flows downward for recovery and discharge. The outer wall of the heat exchange tube 113 is evenly fixedly connected with the heat exchange fins 117, and the heat exchange fins 117 are arranged in a ring shape; the heat on the heat exchange tube 113 is conveniently discharged by arranging the heat exchange fins 117, and the contact area with water is conveniently increased by the heat exchange fins 117, which is conducive to improving the heat exchange efficiency. The liquid collecting pipe 108 is arranged in a funnel shape, and the liquid collecting pipe 108 is connected to the drain valve 109; the funnel shape is convenient for collecting and diverting the condensed water, and the condensed water liquid is conveniently discharged by opening the drain valve 109. ;

[0021] Working principle: softened water is injected into the inner cavity of the device through the liquid inlet valve 111, and the high-temperature black water vapor generated in the coal production process is connected to the air inlet valve 110. The air inlet valve 110 is opened to pass the steam into the annular air pipe 101, and the steam is introduced into the air blowing pipe 102 through the annular air pipe 101. The exhaust through the air blowing pipe 102 drives the fan blade 106 to rotate, and the fan blade 106 drives the rotating rod 105 to rotate, and the rotating rod 105 drives the stirring blade 107 to rotate. The stirring blade 107 stirs the softened water, so that the softened water is fully in contact with the heat exchange mechanism 104, and the heated water can be heated by opening the liquid outlet valve 112. The liquid discharged after the heat is completed can be used, which can make it easy for the device to stir the softened water, so that the softened water can fully contact with the heat exchange mechanism 104, and it is convenient to evenly transfer the heat to the softened water, which is beneficial to improve the heat exchange efficiency of the device. The heat is transferred to the water through the heat exchange pipe 113, which is convenient for recovering the heat in the steam. After the flash steam heat exchange is completed, the steam is recovered by opening the gas disk 114, and the steam is discharged by opening the exhaust valve 115. The device can transfer the heat in the steam to the water through the heat exchange pipe 113, which is used to recover the heat in the flash steam and reduce energy waste.

Claims

1. A waste heat recovery device for black water flash steam, comprising a tank body (100), characterized in that: The inner wall of the tank body (100) is provided with an annular air pipe (101), the inner wall of the annular air pipe (101) is evenly provided with air blowing pipes (102), the top wall of the annular air pipe (101) is provided with a partition (103), the top wall of the partition (103) is provided with a heat exchange mechanism (104), the bottom wall of the partition (103) is provided with a rotating rod (105), the bottom end of the rotating rod (105) is provided with a fan blade (106), the top wall of the rotating rod (105) is provided with a stirring blade (107), and the stirring blade (107) is located on the partition ( A liquid collecting pipe (108) is arranged on the upper side of the annular air pipe (103), a liquid collecting pipe (108) is arranged on the bottom wall of the tank body (100), a liquid discharge valve (109) is arranged on the bottom wall of the tank body (100), the liquid discharge valve (109) is connected to the liquid collecting pipe (108), an air inlet valve (110) is arranged on the lower side of the left side wall of the tank body (100), the air inlet valve (110) is connected to the annular air pipe (101), a liquid inlet valve (111) is arranged on the upper side of the left side wall of the tank body (100), and a liquid outlet valve (112) is arranged on the lower side of the right side wall of the tank body (100).

2. The waste heat recovery device for black water flash steam according to claim 1, characterized in that: The heat exchange mechanism (104) comprises a heat exchange tube (113), the heat exchange tube (113) being evenly arranged on the top wall of the partition (103), a gas disk (114) being arranged at the top end of the heat exchange tube (113), and an exhaust valve (115) being arranged on the top wall of the tank body (100), the exhaust valve (115) being connected to the gas disk (114).

3. The waste heat recovery device for black water flash steam according to claim 2, characterized in that: A guide plate (116) is provided on the bottom wall of the inner cavity of the gas disk (114), and the top wall of the guide plate (116) is arranged in an inclined manner.

4. The waste heat recovery device for black water flash steam according to claim 2, characterized in that: Heat exchange fins (117) are evenly arranged on the outer wall of the heat exchange tube (113), and the heat exchange fins (117) are arranged in a ring shape.

5. The waste heat recovery device for black water flash steam according to claim 1, characterized in that: The liquid collecting pipe (108) is arranged in a funnel shape, and the liquid collecting pipe (108) is connected to the liquid drain valve (109).

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