CN215982492U - Prevent useless waste heat recovery boiler structure of danger of deposition - Google Patents
Prevent useless waste heat recovery boiler structure of danger of deposition Download PDFInfo
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- CN215982492U CN215982492U CN202121773843.7U CN202121773843U CN215982492U CN 215982492 U CN215982492 U CN 215982492U CN 202121773843 U CN202121773843 U CN 202121773843U CN 215982492 U CN215982492 U CN 215982492U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a prevent useless waste heat recovery boiler structure of danger of deposition, includes the first heat transfer passageway, second heat transfer passageway and the third heat transfer passageway that communicate in proper order that constitute by the membrane wall, and wherein first heat transfer passageway is independent passageway, and second heat transfer passageway and third heat transfer passageway are adjacent passageway, are separated by a partition wall water-cooling wall between, first heat transfer passageway lower part sets up the flue gas inlet, and third heat transfer passageway upper portion sets up the exhanst gas outlet, and the upper portion of first heat transfer passageway and second heat transfer passageway is through connecting the flue intercommunication, and the lower part of partition wall water-cooling wall sets up the opening and makes second heat transfer passageway and third heat transfer flue intercommunication, the upper portion of first heat transfer passageway is provided with teletransmission temperature testing arrangement, and the outer wall of first heat transfer passageway, second heat transfer passageway and third heat transfer passageway all is provided with rapping device. The utility model provides a dangerous waste heat recovery boiler structure capable of preventing ash deposition, which can realize high-efficiency recovery of dangerous waste incineration waste heat.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery devices, in particular to a dangerous waste heat recovery boiler structure capable of preventing ash deposition.
Background
The hazardous waste is dangerous waste, generally, the generation amount of the dangerous waste is about 3% of that of solid waste, and the generation amount of the hazardous waste is increased along with the continuous development of economy and the continuous growth of the scale of industrial manufacturing industry in China; the hazardous waste has one or more hazardous characteristics of toxicity, corrosivity, flammability and explosiveness, chemical reactivity and the like, and has a great threat to human bodies and the environment due to the long-term and latent nature of the hazard, so that the national attention is paid to the treatment of the hazardous waste.
The treatment of the dangerous waste at present generally comprises three steps of classified recovery, pretreatment and final disposal, wherein the classified recovery is resource recovery of some recoverable components such as metals, solvents and the like; then, carrying out pretreatment, including physical methods such as adsorption, compaction and extraction, chemical methods such as oxidation reduction and flocculation sedimentation, and the like, on the hazardous waste; and finally, final treatment is carried out, wherein the final treatment generally comprises landfill and incineration treatment, and because the landfill is greatly limited by land resources and the hazardous waste after the landfill is easy to generate potential pollution danger to the underground water environment, the final treatment of the hazardous waste in China is more prone to incineration treatment. Incineration treatment is a harmless treatment mode of hazardous wastes, and a large amount of heat energy generated after the hazardous wastes are incinerated can be recycled by a waste heat recovery boiler, so that higher economic return is obtained.
Because the high-temperature flue gas generated by hazardous waste incineration usually contains more smoke dust impurities, the high-temperature flue gas flows at a certain smoke speed in the closed waste heat recovery flue, the temperature of the flue gas is sharply reduced in the process, the smoke dust in the flue gas is easily attached to the inner wall of the smoke tube, and even if the waste heat recovery flue is longitudinally arranged, a large amount of dust is deposited on the inner wall of the smoke tube after the waste heat recovery flue is used for a period of time. And the existence of the deposited dust can greatly reduce the waste heat recovery efficiency of the boiler.
At present, the ash removal mode of the waste heat recovery flue of the hazardous waste heat recovery boiler commonly adopted in the prior art is to perform manual ash removal from the manhole of the flue after the boiler is stopped, or to perform ash removal by adopting a mode of blowing ash without stopping the boiler. The manual ash removal mode is generally thorough in ash removal, but the operation is performed after the temperature in the boiler is reduced to the room temperature, the cooling time of the boiler is long, and meanwhile, the manual ash removal difficulty is large and the time consumption is long, so that the manual ash removal mode is not an efficient ash removal mode; the soot blowing mode is adopted to realize ash removal without stopping the furnace, but the initial temperature of the hazardous waste flue gas is usually more than 800 ℃, substances in a molten state usually adhere to the inner wall of the flue, and the soot blowing mode has an unobvious cleaning effect. Meanwhile, the waste heat recovery structure of the hazardous waste incineration waste heat recovery boiler in the prior art is simple in arrangement, so that the hazardous waste incineration waste heat recovery efficiency is difficult to improve.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a dangerous waste heat recovery boiler structure capable of preventing ash deposition, and the high-efficiency recovery of dangerous waste incineration waste heat is realized.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a prevent useless waste heat recovery boiler structure of danger of deposition, its includes the first heat transfer passageway, second heat transfer passageway and the third heat transfer passageway that communicate in proper order that constitute by the membrane wall, and wherein first heat transfer passageway is independent passageway, and second heat transfer passageway and third heat transfer passageway are adjacent passageway, are separated by a partition wall water-cooling wall between, first heat transfer passageway lower part sets up the flue gas inlet, and third heat transfer passageway upper portion sets up the exhanst gas outlet, and the upper portion of first heat transfer passageway and second heat transfer passageway is through connecting the flue intercommunication, and the lower part of partition wall water-cooling wall sets up the opening and makes second heat transfer passageway and third heat transfer flue intercommunication, the upper portion of first heat transfer passageway is provided with teletransmission temperature testing arrangement, and the outer wall of first heat transfer passageway, second heat transfer passageway and third heat transfer passageway all is provided with rapping device.
Furthermore, the upper part of the first heat exchange channel is provided with a remote transmission temperature interface, the remote transmission temperature testing device is installed through the remote transmission temperature interface, the remote transmission temperature testing device is a remote transmission thermometer with a remote transmission output resistance signal, the remote transmission temperature testing device is fixedly connected with the remote transmission temperature interface through threads, and the installation threads are made of stainless steel materials to keep the stability under the high-temperature flue gas scouring.
Furthermore, the outer sides of the front wall, the rear wall, the left wall and the right wall of the first heat exchange channel are respectively provided with a rapping device, and the rapping devices on the first heat exchange channel can receive temperature signals measured by the remote temperature testing device and are used for adjusting the rapping frequency of the rapping devices in real time.
Furthermore, rapping devices are arranged on the outer sides of the front wall, the rear wall, the left wall and the right wall of the second heat exchange channel and the third heat exchange channel.
Furthermore, the partition wall water-cooling wall is a membrane water-cooling wall with the same side wall structure as the first heat exchange channel, the second heat exchange channel and the third heat exchange channel.
Compared with the prior art, the utility model has the advantages that:
the hazardous waste heat recovery boiler structure has high waste heat recovery efficiency through the design of the heat exchange channel of the three-return-stroke membrane type water-cooled wall structure, can meet the requirement of hazardous waste incineration treatment, and can efficiently recycle waste heat to generate more economic benefits; the longitudinally arranged heat exchange channel can naturally settle dust in the flue gas, and can reduce the dust accumulated on the heating surface; the first heat exchange channel is independently arranged, so that the temperature of high-temperature flue gas can be effectively reduced to be below 800 ℃, and impurities adhered to the inner wall of the heat exchange channel can be easily cleaned; when the cooled flue gas passes through the second heat exchange channel and the third heat exchange channel, the heat exchange channels can naturally settle dust in the flue gas, the dust on the heating surface can be reduced, and a small part of impurities attached to the membrane water-cooled wall can be easily cleaned through the rapping device, so that the high efficiency of boiler waste heat recovery is maintained.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a side view in block form of the utility model after mounting of the rapping device.
In the figure, 1-a first heat exchange channel, 2-a second heat exchange channel, 3-a third heat exchange channel, 4-a membrane water-cooling wall, 5-a partition wall water-cooling wall, 6-a flue gas inlet, 7-a flue gas outlet, 8-a connecting flue, 9-a port, 10-a remote temperature testing device, 11-a rapping device, 12-an upper header structure, 13-a lower header structure, 14-a boiler barrel, 15-an ash bucket and 16-a fixed installation structure.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a vertical type ash deposition prevention hazardous waste heat recovery boiler structure fixed by a fixed mounting structure 16, which comprises a first heat exchange channel, a second heat exchange channel and a third heat exchange channel which are formed by membrane water-cooled walls and are communicated in sequence, wherein the first heat exchange channel is an independent channel, the second heat exchange channel and the third heat exchange channel are adjacent channels, and are separated by a partition wall water-cooling wall, the lower part of the first heat exchange channel is provided with a flue gas inlet, the upper part of the third heat exchange channel is provided with a flue gas outlet, the upper parts of the first heat exchange channel and the second heat exchange channel are communicated through a connecting flue, the lower part of the partition wall water-cooled wall is provided with a through hole to communicate the second heat exchange channel with the third heat exchange flue, the upper part of the first heat exchange channel is provided with a remote temperature testing device, and the outer walls of the first heat exchange channel, the second heat exchange channel and the third heat exchange channel are provided with rapping devices. Preferably, materials except for the membrane water wall of the hazardous waste heat recovery boiler structure provided by the utility model are low-temperature-resistant Q355D, so that the safety of the boiler structure in operation in extreme temperature is ensured.
Furthermore, the upper part of the first heat exchange channel is provided with a remote transmission temperature interface, the remote transmission temperature testing device is installed through the remote transmission temperature interface, the remote transmission temperature testing device is a remote transmission thermometer with a remote transmission output resistance signal, the remote transmission temperature testing device is fixedly connected with the remote transmission temperature interface through threads, and the installation threads are made of stainless steel materials to keep the stability under the high-temperature flue gas scouring.
Furthermore, the outer sides of the front wall, the rear wall, the left wall and the right wall of the first heat exchange channel are respectively provided with a rapping device, and the rapping devices on the first heat exchange channel can receive temperature signals measured by the remote temperature testing device and are used for adjusting the rapping frequency of the rapping devices in real time. Preferably, the rapping device on the first heat exchange channel is provided with a control device, the control device is used for receiving a temperature signal measured by the remote temperature test device, adjusting the rapping frequency of the rapping device in real time according to the temperature signal, and if the temperature value is higher than 800 ℃, adjusting the rapping frequency of the rapping device to be high frequency, so as to reduce the impurity adhesion amount of the inner wall of the first heat exchange channel, increase the disturbance of water vapor inside the membrane water wall, improve the heat exchange efficiency/effect and reduce the smoke outlet temperature of the first heat exchange channel; when the temperature is not higher than 800 ℃, the rapping frequency of the rapping device is adjusted to be low frequency, and the energy consumption of the rapping device is reduced.
Furthermore, rapping devices are arranged on the outer sides of the front wall, the rear wall, the left wall and the right wall of the second heat exchange channel and the third heat exchange channel. The main component of the high-temperature flue gas is SiO2When the temperature of the flue gas is higher than 800 ℃, substances in the flue gas are molten and can be adsorbed around the membrane type water-cooled wall, in order to reduce the influence of the current situation on the heat exchange effect, the periphery of the outer wall of the first heat exchange channel is provided with a rapping device, a remote temperature interface is arranged at the outlet of the first channel, and the rapping frequency of the rapping device on the first heat exchange channel can be adjusted according to a remote thermometer; when the temperature of the second heat exchange channel and the third heat exchange channel is lower than 800 ℃, substances in smoke are granular, the substances can be influenced by gravity and directly fall into an ash bucket, a small part of the substances can be adhered to a water-cooled wall, and in order to guarantee the heat exchange effect, a plurality of rapping devices are also arranged on the outer walls of the second heat exchange channel and the third heat exchange channel in the dangerous waste heat recovery boiler structure, so that the ash deposition on the inner walls of the second heat exchange channel and the third heat exchange channel is reduced, and the heat exchange efficiency is improved.
Furthermore, the partition wall water-cooling wall is a membrane water-cooling wall with the same side wall structure as the first heat exchange channel, the second heat exchange channel and the third heat exchange channel. As shown in fig. 1 and 2, the hazardous waste heat recovery boiler structure further comprises an upper header structure at the upper part of the membrane water-cooled wall, a lower header structure at the lower part of the membrane water-cooled wall, a boiler drum at the top of the waste heat recovery boiler structure, an ash bucket at the bottom of the waste heat recovery boiler structure and other conventional structures of the waste heat boiler.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and any modifications made by those skilled in the art without departing from the spirit of the present invention will fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a prevent useless waste heat recovery boiler structure of danger of deposition which characterized in that: the device comprises a first heat exchange channel, a second heat exchange channel and a third heat exchange channel which are sequentially communicated and formed by membrane type water-cooled walls, wherein the first heat exchange channel is an independent channel, the second heat exchange channel and the third heat exchange channel are adjacent channels, and are separated by a partition wall water-cooled wall, the lower part of the first heat exchange channel is provided with a flue gas inlet, the upper part of the third heat exchange channel is provided with a flue gas outlet, the upper parts of the first heat exchange channel and the second heat exchange channel are communicated through a connecting flue, the lower part of the partition wall water-cooled wall is provided with an opening to enable the second heat exchange channel and the third heat exchange channel to be communicated, the upper part of the first heat exchange channel is provided with a remote transmission temperature testing device, and the outer walls of the first heat exchange channel, the second heat exchange channel and the third heat exchange channel are provided with rapping devices.
2. The hazardous waste heat recovery boiler structure for preventing ash deposition according to claim 1, characterized in that: and the upper part of the first heat exchange channel is provided with a remote transmission temperature interface, and the remote transmission temperature testing device is installed through the remote transmission temperature interface.
3. The anti-ash-deposition dangerous waste heat recovery boiler structure according to claim 1 or 2, characterized in that: rapping devices are arranged on the outer sides of the front wall, the rear wall, the left wall and the right wall of the first heat exchange channel, and the rapping devices on the first heat exchange channel can receive temperature signals measured by the remote temperature measuring device.
4. The hazardous waste heat recovery boiler structure for preventing ash deposition according to claim 1, characterized in that: rapping devices are arranged on the outer sides of the front wall, the rear wall, the left wall and the right wall of the second heat exchange channel and the third heat exchange channel.
5. The hazardous waste heat recovery boiler structure for preventing ash deposition according to claim 1, characterized in that: the partition wall water-cooling wall is a membrane water-cooling wall with the same side wall structure as the first heat exchange channel, the second heat exchange channel and the third heat exchange channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121773843.7U CN215982492U (en) | 2021-08-02 | 2021-08-02 | Prevent useless waste heat recovery boiler structure of danger of deposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121773843.7U CN215982492U (en) | 2021-08-02 | 2021-08-02 | Prevent useless waste heat recovery boiler structure of danger of deposition |
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| Publication Number | Publication Date |
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| CN215982492U true CN215982492U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121773843.7U Active CN215982492U (en) | 2021-08-02 | 2021-08-02 | Prevent useless waste heat recovery boiler structure of danger of deposition |
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2021
- 2021-08-02 CN CN202121773843.7U patent/CN215982492U/en active Active
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