CN215723261U - Heat accumulating type oxidation furnace capable of preventing thermal shock - Google Patents
Heat accumulating type oxidation furnace capable of preventing thermal shock Download PDFInfo
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- CN215723261U CN215723261U CN202121853837.2U CN202121853837U CN215723261U CN 215723261 U CN215723261 U CN 215723261U CN 202121853837 U CN202121853837 U CN 202121853837U CN 215723261 U CN215723261 U CN 215723261U
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Abstract
The utility model discloses a regenerative oxidation furnace capable of preventing thermal shock, which comprises an oxidation furnace body, an air inlet loop, an exhaust loop and a heat release loop, wherein the air inlet loop, the exhaust loop and the heat release loop are respectively communicated with the oxidation furnace body, and an air outlet of the heat release loop is communicated with the exhaust loop; the joint of the heat leakage loop and the exhaust loop is provided with a thermal shock prevention structure, the thermal shock prevention structure comprises a heat preservation block positioned at the air outlet of the heat leakage loop and a thermal protection plate positioned on the exhaust loop, and the thermal protection plate extends to the two ends of the exhaust loop by taking the air outlet of the heat leakage loop as the center. In the heat accumulating type oxidation furnace capable of preventing thermal shock, the heat release loop and the heat shock preventing structure are matched with each other, so that the influence of thermal shock on the pipeline is solved, the occupied area is reduced, the cost is effectively reduced, and the problem of thermal shock caused to the pipeline in the heat release process by utilizing the air mixing chamber in the prior art is solved.
Description
Technical Field
The utility model belongs to the technical field of oxidation furnaces, and particularly relates to a regenerative oxidation furnace capable of preventing thermal shock.
Background
The regenerative oxidation furnace can be used for treating organic matters containing halogen, and if the organic matters contain other elements such as halogen, the oxidation products also comprise hydrogen halide and the like. During treatment of the regenerative oxidation furnace, waste gas is heated to a temperature close to the thermal oxidation temperature through the heat accumulator, and then enters the combustion chamber for thermal oxidation, the temperature of the oxidized gas is increased, and organic matters are basically converted into carbon dioxide and water. The purified gas passes through another heat accumulator, the temperature is reduced, and the purified gas can be discharged after reaching the discharge standard. Different heat accumulators are switched over with time through a switching valve or a rotating device to absorb and release heat respectively.
The regenerative oxidation furnace comprises a combustion chamber, the phenomenon that the temperature in the combustion chamber is over-high (1000 ℃) can occur in the use process of the regenerative oxidation furnace, and the over-high waste gas needs to be discharged in time at the moment, so that the oxidation furnace is prevented from explosion. However, the over-temperature exhaust gas causes thermal shock to the pipeline, causes local high temperature of the pipeline, affects the mechanical performance of the pipeline, and reduces the service life. To solve this problem, the air-mixing chamber is usually changed from the air-collecting duct in the prior art to solve the local high temperature effect, but at the same time, the cost is increased and the floor space is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a regenerative oxidation furnace capable of preventing thermal shock, which solves the problem of thermal shock to a pipeline in the heat release process by utilizing a wind mixing chamber in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a heat accumulating type oxidation furnace capable of preventing thermal shock comprises an oxidation furnace body, an air inlet loop, an exhaust loop and a heat release loop, wherein the air inlet loop, the exhaust loop and the heat release loop are respectively communicated with the oxidation furnace body, and an air outlet of the heat release loop is communicated with the exhaust loop;
the joint of the heat leakage loop and the exhaust loop is provided with a thermal shock prevention structure, the thermal shock prevention structure comprises a heat preservation block positioned at the air outlet of the heat leakage loop and a thermal protection plate positioned on the exhaust loop, and the thermal protection plate extends to the two ends of the exhaust loop by taking the air outlet of the heat leakage loop as the center.
In one possible design, the heat insulation block is composed of a plurality of annular ceramic fiber blocks, the ceramic fiber blocks are sequentially stacked in the heat release loop, the outer peripheries of the ceramic fiber blocks are tightly attached to the inner wall of the heat release loop, and the inner peripheries of adjacent ceramic fiber blocks are mutually communicated and form a heat release hole for waste gas to pass through.
In a possible design, the heat-proof plate comprises an annular plate body and at least two support groups, wherein the plate body is provided with an air inlet hole matched with an air outlet of the heat release loop, each support group consists of a plurality of supports, and the supports are uniformly distributed on the periphery of the plate body along the circumferential direction of the plate body.
In a possible design, a connecting structure is further arranged at the joint of the heat release loop and the exhaust loop, and the connecting structure is sleeved on the heat release loop and seals a gap between the heat release loop and the exhaust loop.
In one possible design, the oxidation furnace body comprises at least two regenerators and a combustion chamber, and adjacent regenerators are communicated through the combustion chamber;
the air inlet loop comprises an air inlet main loop and at least two air inlet sub-loops, the air inlet sub-loops are respectively communicated with the air inlet main loop, the air inlet sub-loops are communicated with the heat storage chambers, and the air inlet sub-loops and the heat storage chambers are arranged in a one-to-one correspondence manner; the exhaust loop comprises an exhaust main loop and at least two exhaust sub-loops, the exhaust sub-loops are respectively communicated with the exhaust main loop, the exhaust sub-loops are communicated with the heat storage chambers, and the exhaust sub-loops and the heat storage chambers are arranged in a one-to-one correspondence mode.
In one possible design, an air inlet fan is arranged on the air inlet main loop, and the air inlet main loop is communicated with the waste gas pipeline and the first fresh air pipeline.
In one possible design, a combustion-supporting loop is arranged on the combustion chamber, wherein a combustion-supporting fan is arranged on the combustion-supporting loop, an air inlet of the combustion-supporting loop is connected with a second fresh air pipeline, and an air outlet of the combustion-supporting loop is connected with a burner for supplying heat to the combustion chamber.
In one possible design, a control unit is arranged on the heat release loop, wherein the control unit comprises a processing module, a control module and a detection module, and the control module and the detection module are respectively and electrically connected with the processing module;
the control module is arranged to be a temperature control valve positioned on the heat release loop, and the detection module is arranged to be a thermocouple temperature sensor for monitoring the temperature of the oxidation furnace body.
Has the advantages that:
the heat release loop is matched with the thermal shock prevention structure, the heat release loop provides a passage for guiding the waste gas with over-temperature out of the oxidation furnace body, so that the oxidation furnace body is prevented from exploding; the exhaust gas pipe is arranged along the passage to prevent the exhaust gas from directly contacting with the pipeline, so that thermal shock on the pipeline is reduced; the two are mutually matched, thereby not only solving the influence of thermal shock on the pipeline, but also reducing the occupied area and effectively reducing the cost.
Drawings
FIG. 1 is a side view of an assembled thermal shock protection structure.
Fig. 2 is an assembly view of the thermal shock protection structure in a front view.
Fig. 3 is a schematic connection diagram of a regenerative oxidation furnace capable of preventing thermal shock.
In the figure:
1. an oxidation furnace body; 11. a regenerator; 12. a combustion chamber; 2. an air intake circuit; 21. a main intake circuit; 22. an air intake sub-circuit; 201. a main fan; 202. an exhaust gas conduit; 203. a first fresh air duct; 3. an exhaust circuit; 31. a main exhaust circuit; 32. an exhaust sub-circuit; 301. a wind mixing chamber; 302. a chimney; 4. a heat release loop; 5. a combustion-supporting circuit; 501. a combustion fan; 502. a second fresh air duct; 503. a burner; 6. a thermal shock resistant structure; 61. a heat preservation block; 62. a heat shield; 621. a plate body; 622. a support group; 601. a support; 7. and (5) a connecting structure.
Detailed Description
Example (b):
as shown in fig. 1-3, a regenerative thermal oxidizer (hereinafter referred to as "oxidizer") capable of preventing thermal shock includes an oxidizer body 1, an air inlet circuit 2, an air outlet circuit 3, and a heat release circuit 4, wherein the air inlet circuit 2, the air outlet circuit 3, and the heat release circuit 4 are respectively connected to the oxidizer body 1, and an air outlet of the heat release circuit 4 is connected to the air outlet circuit 3.
The joint of the heat release loop 4 and the exhaust loop 3 is provided with a thermal shock prevention structure 6, the thermal shock prevention structure 6 comprises a heat preservation block 61 positioned at the air outlet of the heat release loop 4 and a thermal protection plate 62 positioned on the exhaust loop 3, wherein the thermal protection plate 62 extends to two ends of the exhaust loop 3 by taking the air outlet of the heat release loop 4 as the center.
In the oxidation furnace, the heat release loop 4 is matched with the thermal shock prevention structure 6, the heat release loop provides a passage for guiding over-temperature waste gas out of the oxidation furnace body 1, so that the oxidation furnace body 1 is prevented from being exploded; the exhaust gas pipe is arranged along the passage to prevent the exhaust gas from directly contacting with the pipeline, so that thermal shock on the pipeline is reduced; the two are mutually matched, thereby not only solving the influence of thermal shock on the pipeline, but also reducing the occupied area and effectively reducing the cost.
Specifically, during operation, the heat release circuit 4 is normally closed, the exhaust gas to be treated enters the oxidation furnace body 1 through the diversion of the air inlet circuit 2, and the treated exhaust gas flows out of the oxidation furnace body 1 through the guidance of the exhaust circuit 3. When the overtemperature phenomenon occurs in the oxidation furnace body 1, the heat release loop 4 is opened, and the overtemperature waste gas enters the exhaust loop 3 through the heat release loop 4 and is further discharged or enters the next treatment.
For the thermal shock prevention structure 6, the heat preservation block 61 is made of a material with a good fireproof and heat insulation effect, so that the fireproof and heat insulation integrity of the heat release loop 4 is improved, and a pipeline which can be in contact with the over-temperature waste gas is directly protected. The joint of the heat release loop 4 and the exhaust loop 3 is directly impacted by the over-temperature exhaust gas, so the heat-proof plate 62 is additionally arranged to prevent the over-temperature exhaust gas from directly influencing the exhaust loop 3, and the pipeline is protected under the condition of not increasing the pipeline.
In this embodiment, the heat insulating block 61 is composed of a plurality of annular ceramic fiber blocks, the ceramic fiber blocks are sequentially stacked in the heat release circuit 4, the outer peripheries of the ceramic fiber blocks are tightly attached to the inner wall of the heat release circuit 4, and the inner peripheries of adjacent ceramic fiber blocks are mutually communicated to form a heat release hole for passing exhaust gas.
When heat is released, when the over-temperature waste gas flows through the heat release loop 4, the waste gas flows through the heat release hole and directly contacts the heat insulation block 61, specifically, the waste gas contacts the ceramic fiber block, and the ceramic fiber block has good fire resistance and heat insulation, so that the heat release loop 4 is effectively protected. Optionally, the ceramic fiber block can be fixed on the heat release loop 4 by bolts, screws and the like, so that the connection is convenient and the cost is low.
It will be readily appreciated that the insulating block 61 includes, but is not limited to, a ceramic fiber block, and may be made of any other suitable material having good fire-resistant and heat-insulating effects.
In this embodiment, the heat shield 62 includes an annular plate body 621 and at least two support groups 622, wherein, the plate body 621 is provided with an air inlet hole adapted to the air outlet of the heat release loop 4, the support groups 622 are composed of a plurality of supports 601, and the supports 601 are uniformly distributed on the periphery of the plate body 621 along the circumferential direction of the plate body 621.
The plate body 621 is inserted in the exhaust loop 3, and a certain gap is formed between the plate body 621 and the exhaust loop 3 through the supporting group 622, gas in the gap forms a blocking layer, when the plate body 621 is heated by thermal shock, the heat of the plate body 621 can be transferred to the exhaust loop 3 through the blocking layer, the process of middle transfer is increased, the efficiency of heat conduction is reduced, and the exhaust loop 3 is effectively protected.
The number and location of the support groups 622 include, but are not limited to: referring to fig. 2, the support groups 622 are arranged in two groups, and the support groups 622 are respectively located at two ends of the plate body 621. Alternatively, the bracket 601 may be constructed in any suitable configuration.
In this embodiment, a connection structure 7 is further disposed at a connection portion of the heat release circuit 4 and the exhaust circuit 3, and the connection structure 7 is sleeved on the heat release circuit 4 and blocks a gap between the heat release circuit 4 and the exhaust circuit 3. Therefore, the heat is effectively prevented from overflowing, and the outer wall of the heat release circuit 4 is protected.
Optionally, connection structure 7 sets up to steel wire hose, and on playing the connection effect basis, steel wire hose still has certain flexibility, helps being applicable to different connection condition, has improved application range.
In the embodiment, the oxidation furnace body 1 comprises at least two regenerators 11 and a combustion chamber 12, and the adjacent regenerators 11 are communicated with each other through the combustion chamber 12; the air inlet loop 2 comprises an air inlet main loop 21 and at least two air inlet sub-loops 22, the air inlet sub-loops 22 are respectively communicated with the air inlet main loop 21, the air inlet sub-loops 22 are communicated with the regenerative chambers 11, and the air inlet sub-loops and the regenerative chambers 11 are arranged in a one-to-one correspondence manner; the exhaust loop 3 comprises an exhaust main loop 31 and at least two exhaust sub-loops 32, the exhaust sub-loops 32 are respectively communicated with the exhaust main loop 31, and the exhaust sub-loops 32 are communicated with the regenerative chambers 11 and are arranged in a one-to-one correspondence manner.
Taking a three-chamber regenerative oxidizer as an example, the regenerators 11 are three and named as regenerator a, regenerator B and regenerator C, respectively, and correspondingly, the intake sub-circuit 22 and the exhaust sub-circuit 32 are also three, respectively.
During operation, exhaust gas enters one of the regenerators 11, such as the regenerator C, through the intake loop 2, and the regenerator C absorbs heat in the last exhaust gas treatment process, so that the heat is transferred to the exhaust gas, so that the exhaust gas is heated, and the exhaust gas enters the combustion chamber 12 at a higher temperature after heat exchange through the regenerator C.
Organic matters in the waste gas are oxidized and decomposed into carbon dioxide and water in the combustion chamber 12, so that the pollution to the environment is reduced; when the temperature is not sufficient, the combustion chamber 12 is directly heat compensated to ensure that the organic matter is fully reacted. After the reaction, the exhaust gas enters another regenerator 11, such as regenerator a, and the exhaust gas radiates heat to regenerator a, so that its temperature decreases and the temperature of regenerator a increases. The cooled exhaust gas is discharged through the exhaust circuit 3. At the same time, regenerator B is back flushed by the intake air circuit 2 to blow the remaining exhaust gas at the bottom of regenerator B into regenerator C for heating.
And when the next treatment is carried out, the waste gas enters the heat storage chamber A and is discharged from the heat storage chamber B, and the back flushing is carried out on the heat storage chamber C. The circulation is replaced in such a way, and the treatment of the waste gas is realized.
It is easily understood that, referring to fig. 3, when the over-temperature phenomenon occurs in the regenerators 11, such as the over-temperature phenomenon of one of the regenerators 11 caused by the heat supply of the combustion chamber 12, the regenerators 11 also need to be discharged, and the above-mentioned heat discharging circuit 4 and thermal shock preventing structure 6 can be applied to the intake circuit 2 to protect the intake circuit 2, considering that the exhaust gas in the regenerators 11 may also need to react.
In the present embodiment, an air inlet fan is disposed on the main intake loop 21, and the main intake loop 21 is communicated with an exhaust gas duct 202 and a first fresh air duct 203. The first fresh air pipeline 203 selectively supplies air, and when the concentration of organic matters in the waste gas is too high, the first fresh air pipeline 203 supplies air to play a role in dilution, so that the phenomenon that the organic matters are not fully reacted is avoided, a protection effect is also achieved, and the phenomenon of overtemperature is avoided. Optionally, the air inlet fan can be a fan of any suitable type.
In this embodiment, a combustion-supporting loop 5 is provided on the combustion chamber 12, wherein a combustion-supporting fan 501 is provided on the combustion-supporting loop 5, an air inlet of the combustion-supporting loop 5 is connected to a second fresh air duct 502, and an air outlet of the combustion-supporting loop 5 is connected to a burner 503 for supplying heat to the combustion chamber 12. The combustion-supporting circuit 5 is used in conjunction with the combustion chamber 12, so as to realize the heating compensation function of the combustion chamber 12. Alternatively, any suitable type of combustion fan may be used for the combustion fan 501.
In this embodiment, the heat release circuit 4 is provided with a control unit, wherein the control unit includes a processing module, a control module and a detection module, and the control module and the detection module are respectively electrically connected to the processing module; the control module is arranged as a temperature control valve on the heat release loop 4, and the detection module is arranged as a thermocouple temperature sensor for monitoring the temperature of the oxidation furnace body 1.
When the device works, the detection module, namely the thermocouple temperature sensor, transmits the detected actual temperature value to the processing module, and the processing module compares the actual value with the set theoretical value to judge whether heat release is needed. When heat release is not needed, the control module, namely the temperature control valve, is kept in a closed state; on the contrary, when heat release is needed, the control module is opened, and the over-temperature waste gas can enter the heat release loop 4, so that heat release is carried out.
Obviously, through the arrangement of the control unit, on one hand, the temperature condition in the oxidation furnace body 1 is monitored, and the timely heat release is ensured; on the other hand, the automation level is improved, and remote control is realized.
Alternatively, the processing module can be any suitable commercially available processor, single chip or PLC. It will be readily appreciated that the control module includes, but is not limited to, a temperature control valve and the detection module includes, but is not limited to, a thermocouple temperature sensor.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A regenerative oxidation furnace capable of preventing thermal shock is characterized by comprising an oxidation furnace body (1), an air inlet loop (2), an exhaust loop (3) and a heat release loop (4), wherein the air inlet loop (2), the exhaust loop (3) and the heat release loop (4) are respectively communicated with the oxidation furnace body (1), and an air outlet of the heat release loop (4) is communicated with the exhaust loop (3);
the joint of the heat release loop (4) and the exhaust loop (3) is provided with a heat-proof impact structure (6), the heat-proof impact structure (6) comprises a heat preservation block (61) positioned at the air outlet of the heat release loop (4) and a heat-proof plate (62) positioned on the exhaust loop (3), wherein the heat-proof plate (62) extends towards the two ends of the exhaust loop (3) by taking the air outlet of the heat release loop (4) as the center.
2. The regenerative oxidation furnace capable of preventing thermal shock according to claim 1, wherein the heat retaining block (61) is composed of a plurality of annular ceramic fiber blocks, the ceramic fiber blocks are sequentially stacked in the heat release circuit (4), the outer peripheries of the ceramic fiber blocks are closely attached to the inner wall of the heat release circuit (4), and the inner peripheries of the adjacent ceramic fiber blocks are communicated with each other and constitute heat release holes for passing exhaust gas.
3. A regenerative oxidation furnace with thermal shock protection according to claim 1, characterized in that the thermal protection plate (62) comprises an annular plate body (621) and at least two support sets (622), wherein the plate body (621) is provided with air inlets adapted to the air outlets of the heat release circuit (4), the support sets (622) are composed of a plurality of supports (601), and the supports (601) are uniformly distributed on the outer periphery of the plate body (621) along the circumferential direction of the plate body (621).
4. A regenerative oxidation furnace capable of preventing thermal shock according to claim 1, wherein a connection structure (7) is further disposed at the connection between the heat release circuit (4) and the exhaust circuit (3), and the connection structure (7) is sleeved on the heat release circuit (4) and seals the gap between the heat release circuit (4) and the exhaust circuit (3).
5. A regenerative thermal oxidizer as defined in any of claims 1 to 4 wherein said oxidizer body (1) comprises at least two regenerators (11) and a combustor (12), and adjacent regenerators (11) are connected to each other by said combustor (12);
the air inlet loop (2) comprises an air inlet main loop (21) and at least two air inlet sub-loops (22), the air inlet sub-loops (22) are respectively communicated with the air inlet main loop (21), the air inlet sub-loops (22) are communicated with the heat storage chambers (11), and the air inlet sub-loops and the heat storage chambers are arranged in a one-to-one correspondence manner; the exhaust loop (3) comprises an exhaust main loop (31) and at least two exhaust sub-loops (32), the exhaust sub-loops (32) are respectively communicated with the exhaust main loop (31), and the exhaust sub-loops (32) are communicated with the regenerators (11) and are arranged in a one-to-one correspondence manner.
6. A regenerative oxidizer with thermal shock protection as claimed in claim 5 wherein the main air intake circuit (21) is provided with an air intake fan and the main air intake circuit (21) is connected to the exhaust duct (202) and the first fresh air duct (203).
7. A regenerative oxidation furnace capable of preventing thermal shock according to claim 5, characterized in that a combustion-supporting loop (5) is provided on the combustion chamber (12), wherein a combustion-supporting fan (501) is provided on the combustion-supporting loop (5), the air inlet of the combustion-supporting loop (5) is connected to a second fresh air duct (502), and the air outlet of the combustion-supporting loop (5) is connected to a burner (503) for supplying heat to the combustion chamber (12).
8. A regenerative oxidation furnace capable of preventing thermal shock according to claim 1, wherein the heat release circuit (4) is provided with a control unit, wherein the control unit comprises a processing module, a control module and a detection module, and the control module and the detection module are respectively electrically connected with the processing module;
the control module is arranged to be a temperature control valve positioned on the heat release loop (4), and the detection module is arranged to be a thermocouple temperature sensor for monitoring the temperature of the oxidation furnace body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121853837.2U CN215723261U (en) | 2021-08-09 | 2021-08-09 | Heat accumulating type oxidation furnace capable of preventing thermal shock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121853837.2U CN215723261U (en) | 2021-08-09 | 2021-08-09 | Heat accumulating type oxidation furnace capable of preventing thermal shock |
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| Publication Number | Publication Date |
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| CN215723261U true CN215723261U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121853837.2U Active CN215723261U (en) | 2021-08-09 | 2021-08-09 | Heat accumulating type oxidation furnace capable of preventing thermal shock |
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2021
- 2021-08-09 CN CN202121853837.2U patent/CN215723261U/en active Active
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