Waste heat recovery device for drying lignite resin

Abstract

The utility model relates to the field of energy recovery equipment, in particular to a waste heat recovery device for drying lignite resin, which comprises a barrel, a heat exchange tank arranged in the barrel, a water inlet pipe and a water outlet pipe respectively arranged at the upper end and the lower end of the heat exchange tank, a heat insulation sleeve arranged outside the barrel, and a discharge port arranged at the lower end of the side surface of the barrel. A sealing ring is vertically arranged on the outer side of the discharging opening in a sliding mode. The lignite resin is used for heating water, heat of the lignite resin is transferred to the water in the heat exchange tank, the heated water is discharged from the water outlet pipe and used for equipment needing hot water, and therefore the purpose of waste heat utilization is achieved.

Description

Technical Field

[0001] The utility model relates to the field of energy recovery equipment, in particular to a waste heat recovery device for drying lignite resin. Background Art

[0002] Lignite resin is a kind of filtrate reducer for drilling fluid and a raw material for producing drilling fluid. It has a drilling fluid system with good temperature and salt resistance. The synthesis method of lignite resin includes: collecting lignite, drying, pyrolysis, filtering and separating, refining, mixing and dehydrating. In the dehydration process, the conventional method is to put lignite resin into a drying oven for drying. After drying, the lignite resin still has heat. If the lignite resin is cooled by natural cooling, these heats will be wasted. Therefore, it is particularly necessary to develop a waste heat recovery device that can recover and reuse the waste heat after drying lignite resin and save energy. Summary of the Invention

[0003] The purpose of the utility model is to provide a waste heat recovery device for drying lignite resin, which has the function of recovering waste heat and saving energy.

[0004] The adopted technical scheme is as follows:

[0005] A waste heat recovery device for drying lignite resin includes a cylinder body. A heat exchange tank is arranged inside the cylinder body. A water inlet pipe and a water outlet pipe are respectively arranged at the upper and lower ends of the heat exchange tank. A heat preservation sleeve is arranged outside the cylinder body. A discharge port is arranged at the lower end of the side surface of the cylinder body. A sealing ring is vertically slidably arranged outside the discharge port.

[0006] Preferably, the water inlet pipe extends coaxially with the cylinder body. An end cover is rotatably arranged outside the water inlet pipe. The end cover is provided with a feed funnel penetrating the end cover. The water inlet pipe is provided with a rotating mechanism connected to the end cover.

[0007] Preferably, the rotating mechanism includes a first driving motor. The first driving motor is provided with a driving gear. An external gear ring is coaxially arranged at the upper end of the end cover. The external gear ring meshes with the driving gear.

[0008] Preferably, a rotating shaft is vertically rotatably arranged inside the heat exchange tank. The heat exchange tank is provided with a second driving motor connected to the rotating shaft. Multiple groups of stirring blades are arranged on the rotating shaft.

[0009] Preferably, a plurality of heat exchange fins are arranged on the inner wall of the heat exchange tank.

[0010] Preferably, a temperature sensor is arranged inside the heat exchange tank.

[0011] Preferably, a plurality of vertically extending telescopic rods are arranged inside the heat preservation sleeve. The lower ends of the telescopic rods are fixedly connected to the sealing ring.

[0012] Compared with the prior art, the beneficial effects are as follows:

[0013] 1. In the present utility model, water is injected into the heat exchange tank, and the dried lignite resin is put into the cylinder body. The lignite resin is used to heat the water, and the heat of the lignite resin is transferred to the water in the heat exchange tank. The heated water is discharged from the water outlet pipe and used for equipment that requires hot water, thereby achieving the purpose of utilizing waste heat.

[0014] 2. A end cover is rotatably arranged on the outer side of the water inlet pipe of the present utility model. The end cover is provided with a feed funnel penetrating through the end cover. The water inlet pipe is provided with a rotating mechanism connected to the end cover. The rotating mechanism controls the rotation of the end cover, so that the feed funnel rotates around the water inlet pipe, and the lignite resin is evenly put into the gap between the cylinder body and the heat exchange tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a waste heat recovery device for drying lignite resin of the present utility model.

[0016] Figure 2 FIG. Figure 1 is a schematic structural diagram of part A in FIG.

[0017] Figure 3 FIG. Figure 1 is a schematic structural diagram of part B in FIG.

[0018] In the figure: 1, cylinder body; 2, heat exchange tank; 3, water inlet pipe; 4, water outlet pipe; 5, heat preservation sleeve; 6, discharge port; 7, sealing ring; 8, telescopic rod; 9, end cover; 10, feed funnel; 11, first driving motor; 12, driving gear; 13, external gear ring; 14, rotating shaft; 15, second driving motor; 16, stirring blade; 17, heat exchange fin; 18, temperature sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present utility model in conjunction with specific embodiments, as Figures 1 to 3 shown:

[0020] Embodiment 1: A waste heat recovery device for drying lignite resin includes a cylinder body 1. A heat exchange tank 2 is arranged inside the cylinder body 1. A water inlet pipe 3 and a water outlet pipe 4 are respectively arranged at the upper and lower ends of the heat exchange tank 2. A heat preservation sleeve 5 is arranged outside the cylinder body 1. The heat preservation sleeve 5 reduces the heat dissipation of the cylinder body 1. A discharge port 6 is arranged at the lower side of the cylinder body 1. A sealing ring 7 is vertically slidably arranged outside the discharge port 6. When the sealing ring 7 blocks the discharge port 6, the lower end of the cylinder body 1 is closed. When the sealing ring 7 is arranged in a dislocation manner with the discharge port 6, the lower end of the cylinder body 1 is opened for discharging lignite resin.

[0021] When utilizing waste heat, water is injected into the heat exchange tank 2, and the relatively high-temperature lignite resin just after drying is put into the cylinder body 1. The lignite resin is used to heat the water, transferring the heat of the lignite resin to the water in the heat exchange tank 2. The heated water is discharged from the water outlet pipe 4 for equipment that requires hot water, thereby achieving the purpose of waste heat utilization.

[0022] Embodiment 2: A waste heat recovery device for drying lignite resin, comprising a cylinder body 1. A heat exchange tank 2 is arranged inside the cylinder body 1. A water inlet pipe 3 and a water outlet pipe 4 are respectively arranged at the upper and lower ends of the heat exchange tank 2. A heat preservation sleeve 5 is arranged outside the cylinder body 1, and the heat preservation sleeve 5 reduces the heat dissipation of the cylinder body 1. A discharge port 6 is arranged at the lower end of the side surface of the cylinder body 1. A sealing ring 7 is slidably arranged vertically outside the discharge port 6. A plurality of vertically extending telescopic rods 8 are arranged inside the heat preservation sleeve 5. The lower ends of the telescopic rods 8 are fixedly connected to the sealing ring 7. The telescopic rods 8 expand and contract to control the lifting of the sealing ring 7. When the sealing ring 7 blocks the discharge port 6, the lower end of the cylinder body 1 is closed. When the sealing ring 7 is misaligned with the discharge port 6, the lower end of the cylinder body 1 is open for discharging lignite resin.

[0023] The water inlet pipe 3 extends coaxially with the cylinder body 1. An end cover 9 is rotatably arranged outside the water inlet pipe 3. The end cover 9 is provided with a feeding funnel 10 penetrating through the end cover 9. The water inlet pipe 3 is provided with a rotating mechanism connected to the end cover 9. The rotating mechanism includes a first driving motor 11. The first driving motor 11 is provided with a driving gear 12. An external gear ring 13 is coaxially arranged at the upper end of the end cover 9. The external gear ring 13 meshes with the driving gear 12. The rotating mechanism controls the rotation of the end cover 9, so that the feeding funnel 10 rotates around the water inlet pipe 3, and the lignite resin is evenly put into the gap between the cylinder body 1 and the heat exchange tank 2.

[0024] A rotating shaft 14 is vertically rotatably arranged inside the heat exchange tank 2. The heat exchange tank 2 is provided with a second driving motor 15 connected to the rotating shaft 14. A plurality of groups of stirring blades 16 are arranged on the rotating shaft 14. The second driving motor 15 drives the rotating shaft 14 to rotate, so that the temperature of the water in the heat exchange tank 2 is uniform. A plurality of heat exchange fins 17 are arranged on the inner wall of the heat exchange tank 2. The heat exchange fins 17 increase the heat exchange area and improve the heat exchange efficiency. A temperature sensor 18 is arranged inside the heat exchange tank 2, and the temperature sensor 18 monitors the water temperature in the heat exchange tank 2.

[0025] The specific working process is as follows: When utilizing the waste heat of the dried lignite resin, water is injected into the heat exchange tank 2, and the rotating mechanism is started. The control end of the rotating mechanism rotates the end cover 9, and the relatively high-temperature lignite resin just dried is evenly put into the cylinder body 1 through the feed funnel 10. The lignite resin is used to heat the water, and the heat of the lignite resin is transferred to the water in the heat exchange tank 2. During this process, the second driving motor 15 is started to drive the rotating shaft 14 to rotate, thereby stirring the water in the heat exchange tank 2. The heated water is discharged from the water outlet pipe 4 and used for equipment that requires hot water, thus achieving the purpose of waste heat utilization. When the temperature of the lignite resin decreases and needs to be replaced, the sealing ring 7 is controlled to rise, and the lignite resin is discharged from the discharge port 6.

[0026] The above-mentioned embodiments are only the preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A waste heat recovery device for drying lignite resin, characterized in that: It includes a cylinder body, a heat exchange tank is arranged inside the cylinder body, a water inlet pipe and a water outlet pipe are arranged at the upper and lower ends of the heat exchange tank respectively, an insulation sleeve is arranged outside the cylinder body, a discharge port is arranged at the lower end of the side of the cylinder body, and a closed ring is arranged vertically sliding outside the discharge port.

2. A waste heat recovery device for drying lignite resin according to claim 1, characterized in that: The water inlet pipe extends coaxially with the cylinder, an end cover is rotatably arranged on the outside of the water inlet pipe, a feed funnel penetrating the end cover is arranged on the end cover, and a rotating mechanism connected to the end cover is arranged on the water inlet pipe.

3. A waste heat recovery device for drying lignite resin according to claim 2, characterized in that: The rotating mechanism comprises a first driving motor, the first driving motor is provided with a driving gear, an outer gear ring is coaxially provided on the upper end of the end cover, and the outer gear ring is meshed with the driving gear.

4. A waste heat recovery device for drying lignite resin according to claim 1, characterized in that: The heat exchange tank is provided with a rotating shaft for vertical rotation inside, and the heat exchange tank is provided with a second driving motor connected with the rotating shaft, and a plurality of stirring blades are provided on the rotating shaft.

5. A waste heat recovery device for drying lignite resin according to claim 1, characterized in that: The inner wall of the heat exchange tank is provided with a plurality of heat exchange fins.

6. A waste heat recovery device for drying lignite resin according to claim 1, characterized in that: A temperature sensor is arranged in the heat exchange tank.

7. A waste heat recovery device for drying lignite resin according to claim 1, characterized in that: A plurality of vertically extending telescopic rods are arranged in the heat preservation sleeve, and the lower ends of the telescopic rods are fixedly connected to the closed ring.

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