Carbon molecular sieve carbonization heat energy recovery device
By designing a carbon molecular sieve carbonization heat recovery device, the incineration tank, heat absorption pipe and heat exchange box absorb and recover heat from carbonized flue gas, the problem of high energy consumption in continuous furnaces is solved, and energy consumption is reduced and heat recovery is effectively achieved.
Patent Information
- Application Number
- CN202420967876.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-07
AI Technical Summary
In the existing carbon molecular sieve preparation process, the energy consumption of the continuous furnace is relatively high, and the heat in the carbonized flue gas cannot be fully utilized.
A carbon molecular sieve carbonization heat recovery device is designed, including an incineration box, heat absorption pipe and heat exchange box, which reduces energy consumption by absorbing the heat of the carbonized flue gas and recycling it to a continuous furnace.
Through the use of the heat recovery device, the energy consumption of the continuous furnace can be reduced by at least 5%, while improving the heat recovery rate.
Smart Images
Figure CN222634586U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of carbon molecular sieve production equipment, in particular to a carbon molecular sieve carbonization heat energy recovery device. Background Art
[0002] The preparation process of carbon molecular sieve includes a carbonization step, that is, carbonizing the semi-finished product of carbon molecular sieve (carbon molecular sieve extruded strips) at high temperature. Figure 3 As shown, a continuous furnace used in the carbonization step comprises a long strip furnace body 1, a heating tube 2 is arranged in the furnace body 1, both ends of the heating tube 2 extend outward to the outside of the furnace body 1, the heating tube 2 is rotatably connected to the furnace body 1, a driving mechanism is arranged on the heating tube 2, a furnace chamber 3 is formed between the heating tube 2 and the furnace body 1, a gas nozzle 18 is arranged in the furnace chamber 3, a smoke exhaust port 17 and a plurality of air inlets 16 are arranged on the furnace body 1, a spiral feeding plate 4 is arranged on the inner circumference of the heating tube 2, a discharge port 5 is arranged at one end of the heating tube 2, a feeding bin 6 connected to the ground is arranged at the other end of the heating tube 2, a feeding hopper 7 is arranged on the feeding bin 6, the discharge end of the feeding hopper 7 extends into the heating tube 2, and a smoke extraction pipe 8 is arranged on the feeding bin 6. The specific working principle is: the gas nozzle 18 is connected to the natural gas pipeline, and after ignition, the heating tube 2 is heated to a high temperature, and the combustion flue gas is discharged from the exhaust port 17 and ignited to avoid environmental pollution. Fresh air is added to the furnace 3 from the air inlet 16; the semi-finished material in the feed hopper 7 enters the rotating heating tube 2, and moves axially under the action of the feeding plate 4. During the movement, it is heated and carbonized and discharged from the discharge port 5. The carbonized flue gas is a combustible substance and is discharged from the smoke extraction pipe 8.
[0003] The above-mentioned continuous furnace is an independently developed equipment by the applicant and has been put into use in the workshop. During use, it was found that there is room for further reduction in energy consumption, especially the combustion heat of carbonized flue gas is not fully utilized, so a matching heat recovery device is needed. Utility Model Content
[0004] The utility model aims to provide a carbon molecular sieve carbonization heat energy recovery device.
[0005] The utility model has the advantage of reducing the energy consumption of the continuous furnace.
[0006] The technical solution of the utility model is: a carbon molecular sieve carbonization heat energy recovery device, including an incineration box, the incineration box is provided with a fuel inlet and a smoke exhaust pipe, an igniter is provided inside the incineration box, the fuel inlet is used to connect to the smoke exhaust duct of the continuous furnace, a heat absorption pipe is provided in the incineration box, the heat absorption pipe is used to absorb the heat released by the combustion of carbonized smoke discharged from the smoke exhaust duct, the heat absorption pipe is used to connect to the air inlet of the continuous furnace, and a fresh air outlet is provided at the bottom of the incineration box.
[0007] In the aforementioned carbon molecular sieve carbonization heat energy recovery device, the fuel inlet is located at the bottom of the incinerator, a hard pipe connected to the smoke pipe is provided at the fuel inlet, a pressurized fan is provided on the hard pipe, and at least one air nozzle is provided on the hard pipe.
[0008] In the aforementioned carbon molecular sieve carbonization heat energy recovery device, a plurality of heat absorbing plates arranged side by side are provided in the incineration box, the heat absorbing pipe is repeatedly bent in the incineration box and passes through all the heat absorbing plates for many times, and both ends of the heat absorbing pipe extend out of the incineration box.
[0009] In the aforementioned carbon molecular sieve carbonization heat energy recovery device, a blower is provided at one end of the heat absorption pipeline, and a plurality of branch pipelines are provided at the other end of the heat absorption pipeline, and the branch pipelines are respectively connected to a plurality of air inlets on the continuous furnace.
[0010] In the aforementioned carbon molecular sieve carbonization heat energy recovery device, a heat exchange box is provided on the outside of the incineration box, an air inlet is provided on the heat exchange box, a blower is provided at the air inlet, a plurality of branch pipes are provided on the heat exchange box, and the branch pipes are respectively connected to the plurality of air inlets on the continuous furnace. A heat release pipe is provided in the heat exchange box, and the two ends of the heat release pipe are respectively connected to the two ends of the heat absorption pipe. The heat release pipe and the heat absorption pipe form a circulation pipe, and heat transfer oil is provided in the circulation pipe, and a delivery pump is provided on the circulation pipe.
[0011] In the aforementioned carbon molecular sieve carbonization heat energy recovery device, a plurality of heat sinks are arranged in the incineration box, and the heat release pipe is repeatedly bent and passes through all the heat sinks for multiple times.
[0012] Compared with the prior art, the utility model uses the combustible carbonized flue gas discharged from the continuous furnace as fuel, enters the incineration box, ignites it, heats the air entering the continuous furnace, and returns the heat in the carbonized flue gas to the continuous furnace, thereby reducing the energy consumption of the continuous furnace. In addition, through further improvements in the structure, the heat exchange area of the air entering the continuous furnace when passing through the heat energy recovery device is increased, further improving the heat recovery rate and further reducing the energy consumption of the continuous furnace. The utility model has been completed and put into use in actual production. According to actual testing, the energy consumption can be reduced by at least 5%. In summary, the utility model has the advantage of reducing the energy consumption of the continuous furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of Example 1.
[0014] Figure 2 It is a structural schematic diagram of Example 2.
[0015] Figure 3 It is a structural schematic diagram of an existing continuous furnace.
[0016] The markings in the attached drawing are: 20-incineration box, 21-fuel inlet, 22-smoke exhaust pipe, 23-igniter, 24-heat absorption pipe, 25-hard pipe, 26-pressurized fan, 27-jet nozzle, 28-heat absorption plate, 29-blower, 30-branch pipe, 31-heat exchange box, 32-air inlet, 33-heat release pipe, 34-delivery pump, 35-heat sink, 36-fresh air outlet. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0018] Example 1. A carbon molecular sieve carbonization heat energy recovery device, such as Figure 1 As shown, used for Figure 3 The continuous furnace shown includes a combustion box 20 , on which a fuel inlet 21 and a smoke exhaust pipe 22 are provided. The smoke exhaust pipe 22 is located at the top of the combustion box 20 .
[0019] An igniter 23 is provided inside the incineration box 20, and a fuel inlet 21 is used to connect to the smoke exhaust duct 8 of the continuous furnace. A heat absorption duct 24 is provided inside the incineration box 20, and the heat absorption duct 24 is used to absorb the heat released by the combustion of carbonized flue gas discharged from the smoke exhaust duct 8. The heat absorption duct 24 is used to connect to the air inlet 16 of the continuous furnace. A fresh air outlet 36 is provided at the bottom of the incineration box 20.
[0020] The fuel inlet 21 is located at the bottom of the incineration box 20 . A hard pipe 25 connected to the smoke extraction pipe 8 is provided at the fuel inlet 21 . A pressurized fan 26 is provided on the hard pipe 25 . Four air nozzles 27 are provided on the hard pipe 25 .
[0021] The incineration box 20 is provided with a plurality of heat absorbing plates 28 arranged side by side. The heat absorbing pipe 24 is repeatedly bent in the incineration box 20 and passes through all the heat absorbing plates 28 for multiple times. Both ends of the heat absorbing pipe 24 extend out of the incineration box 20 .
[0022] A blower 29 is disposed at one end of the heat absorbing pipe 24 , and a plurality of branch pipes 30 are disposed at the other end of the heat absorbing pipe 24 . The branch pipes 30 are respectively connected to a plurality of air inlets 16 on the continuous furnace.
[0023] Working principle of Example 1: The carbonized flue gas generated in the continuous furnace is discharged through the smoke extraction pipe 8, enters the hard pipe 25, and after the pressure is increased by the pressure fan 26, it is ejected from the air nozzle 27. The igniter 23 ignites the carbonized flue gas, and the carbonized flue gas is burned to generate heat. The combustion waste gas is discharged from the exhaust pipe 22. At the same time, under the smoke rush effect, the combustion box 20 is negatively pressurized, and the outside air is sucked into the combustion box 20 from the fresh air port 36 to supplement oxygen. The air is acted on by the blower 29, passes through the heat absorption pipe 24, absorbs the heat of the carbonized flue gas combustion, and becomes hot gas. The hot gas enters the multiple air inlets 16 of the continuous furnace from multiple branch pipes 30 to supplement oxygen for the combustion of natural gas in the continuous furnace.
[0024] The pressurized fan 26 can increase the ejection speed of the carbonized flue gas at the air nozzle 27, avoid flame backflow, prevent explosion inside the pipeline, and improve safety.
[0025] The purpose of providing the fresh air inlet 36 is to supplement the oxygen in the incineration box 20. However, in fact, the carbonized flue gas can be continuously ignited without providing the fresh air inlet 36, because the carbonized flue gas is originally mixed with a large amount of air. The purpose of providing the fresh air inlet 36 is just to make the carbonized flue gas burn more fully.
[0026] Embodiment 2. A carbon molecular sieve carbonization heat energy recovery device comprises an incineration box 20, the incineration box 20 is provided with a fuel inlet 21 and a smoke exhaust pipe 22, an igniter 23 is provided inside the incineration box 20, the fuel inlet 21 is used to connect to the smoke exhaust pipe 8 of the continuous furnace, a heat absorption pipe 24 is provided inside the incineration box 20, the heat absorption pipe 24 is used to absorb the heat released by the combustion of carbonized smoke exhausted from the smoke exhaust pipe 8, the heat absorption pipe 24 is used to connect to the air inlet 16 of the continuous furnace, and a fresh air outlet 36 is provided at the bottom of the incineration box 20.
[0027] The fuel inlet 21 is located at the bottom of the incineration box 20 . A hard pipe 25 connected to the smoke extraction pipe 8 is provided at the fuel inlet 21 . A pressurized fan 26 is provided on the hard pipe 25 . Four air nozzles 27 are provided on the hard pipe 25 .
[0028] The incineration box 20 is provided with a plurality of heat absorbing plates 28 arranged side by side. The heat absorbing pipe 24 is repeatedly bent in the incineration box 20 and passes through all the heat absorbing plates 28 for multiple times. Both ends of the heat absorbing pipe 24 extend out of the incineration box 20 .
[0029] A heat exchange box 31 is provided on the outside of the incineration box 20, and an air inlet 32 is provided on the heat exchange box 31. A blower 29 is provided at the air inlet 32. A plurality of branch pipes 30 are provided on the heat exchange box 31, and the branch pipes 30 are respectively connected to the plurality of air inlets 16 on the continuous furnace. A heat release pipe 33 is provided in the heat exchange box 31, and the two ends of the heat release pipe 33 are respectively connected to the two ends of the heat absorption pipe 24. The heat release pipe 33 and the heat absorption pipe 24 form a circulation pipe, and heat transfer oil is provided in the circulation pipe, and a delivery pump 34 is provided on the circulation pipe.
[0030] A plurality of heat dissipation plates 35 are arranged in the incineration box 20 , and the heat release pipe 33 is bent repeatedly and passes through all the heat dissipation plates 35 for multiple times.
[0031] Working principle of Example 2: The carbonized flue gas generated in the continuous furnace is discharged through the smoke extraction pipe 8, enters the hard pipe 25, and after the pressure is increased by the pressure fan 26, it is ejected from the air nozzle 27. The igniter 23 ignites the carbonized flue gas, and the carbonized flue gas is burned to generate heat. The combustion waste gas is discharged from the exhaust pipe 22. At the same time, under the smoke rush effect, the incineration box 20 is negatively pressurized, and the outside air is sucked into the incineration box 20 from the fresh air port 36 to supplement oxygen. The delivery pump 34 drives the heat transfer oil to circulate in the circulation pipe, bringing the heat in the incineration box 20 to the heat exchange box 31, and releasing it through the heat release pipe 33 and the heat sink 35. The blower 29 drives the air to enter the heat exchange box 31, pass through the heat release pipe 33 and the heat sink 35, and after being heated, enter the multiple air inlets 16 of the continuous furnace from multiple branch pipes 30 to supplement oxygen for the combustion of natural gas in the continuous furnace.
[0032] Compared with Example 1 and Example 2, Example 1 is simpler, but due to the poor thermal conductivity of air, the heat absorption speed is not fast enough, and the air entering the continuous furnace is only heated in the heat absorption pipe 24, and the heat exchange area is small, resulting in that the utilization rate of the heat recovery from the carbonization flue gas incineration still has room for further improvement. In Example 2, the heat absorption pipe 24 of the heat transfer oil is first used to absorb the heat from the carbonization flue gas incineration. The heat transfer oil has good thermal conductivity and can absorb heat better. Then, the heat is released to the heat release pipe 33 and the heat sink 35 to heat the air entering the continuous furnace. The heat exchange area of the air is significantly larger, which can further improve the utilization rate of the heat recovery.
[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
Claims
1. A carbon molecular sieve carbonization heat energy recovery device, characterized in that: The invention comprises an incineration box (20), wherein the incineration box (20) is provided with a fuel inlet (21) and a smoke exhaust pipe (22), an igniter (23) is provided inside the incineration box (20), the fuel inlet (21) is used to be connected to a smoke exhaust pipe (8) of a continuous furnace, a heat absorption pipe (24) is provided inside the incineration box (20), the heat absorption pipe (24) is used to absorb the heat released by the combustion of carbonized smoke exhausted from the smoke exhaust pipe (8), the heat absorption pipe (24) is used to be connected to an air inlet (16) of the continuous furnace, and a fresh air outlet (36) is provided at the bottom of the incineration box (20).
2. The carbon molecular sieve carbonization heat energy recovery device according to claim 1, characterized in that: The fuel inlet (21) is located at the bottom of the incineration box (20). A hard pipe (25) connected to the smoke extraction pipe (8) is provided at the fuel inlet (21). A pressurized fan (26) is provided on the hard pipe (25). At least one air nozzle (27) is provided on the hard pipe (25).
3. The carbon molecular sieve carbonization heat energy recovery device according to claim 1, characterized in that: The incineration box (20) is provided with a plurality of heat absorbing plates (28) arranged side by side, the heat absorbing pipe (24) is repeatedly bent in the incineration box (20) and passes through all the heat absorbing plates (28) for multiple times, and both ends of the heat absorbing pipe (24) extend out of the incineration box (20).
4. The carbon molecular sieve carbonization heat energy recovery device according to claim 3, characterized in that: A blower (29) is provided at one end of the heat absorption pipe (24), and a plurality of branch pipes (30) are provided at the other end of the heat absorption pipe (24), and the branch pipes (30) are respectively connected to a plurality of air inlets (16) on the continuous furnace.
5. The carbon molecular sieve carbonization heat energy recovery device according to claim 1, characterized in that: A heat exchange box (31) is provided on the outside of the incineration box (20), an air inlet (32) is provided on the heat exchange box (31), a blower (29) is provided at the air inlet (32), a plurality of branch pipes (30) are provided on the heat exchange box (31), the branch pipes (30) are respectively connected to a plurality of air inlets (16) on the continuous furnace, a heat release pipe (33) is provided in the heat exchange box (31), two ends of the heat release pipe (33) are respectively connected to two ends of a heat absorption pipe (24), the heat release pipe (33) and the heat absorption pipe (24) form a circulation pipe, heat transfer oil is provided in the circulation pipe, and a delivery pump (34) is provided on the circulation pipe.
6. The carbon molecular sieve carbonization heat energy recovery device according to claim 5, characterized in that: A plurality of heat dissipation plates (35) are arranged in the incineration box (20), and the heat release pipe (33) is repeatedly bent and passes through all the heat dissipation plates (35) for multiple times.