CN108954312B - Sludge recycling system and energy-saving environment-friendly porous combustor thereof - Google Patents
Sludge recycling system and energy-saving environment-friendly porous combustor thereof Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 46
- 238000004064 recycling Methods 0.000 title claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 125
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000000197 pyrolysis Methods 0.000 claims abstract description 70
- 239000003345 natural gas Substances 0.000 claims abstract description 59
- 238000003763 carbonization Methods 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims description 19
- 238000012806 monitoring device Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 24
- 239000000446 fuel Substances 0.000 abstract description 20
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 206010005908 Body temperature conditions Diseases 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/14—Radiant burners using screens or perforated plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
Abstract
The invention discloses an energy-saving environment-friendly porous combustor for sludge recycling, which adopts a sleeve mode and comprises a natural gas annular inflow channel, a combustion-supporting gas air annular inflow channel, a pyrolysis gas annular inflow channel, a wind disc, a gas mixing channel, an air-fuel mixing chamber, a combustion chamber and the like which are built in the sleeve mode. The combustor can simultaneously mix and control combustion of various fuels, particularly can directly utilize new pyrolysis gas energy generated by the carbonization furnace under the participation of combustion-supporting gas, greatly reduces the energy consumption of the system, realizes energy recycling, reduces pollutant emission, and has the advantages of low manufacturing cost, simple structure, convenient replacement, durability and the like. The invention also discloses a sludge recycling system applying the burner.
Description
Technical Field
The invention relates to the technical field of fuel combustion control devices for sludge recycling, in particular to a porous energy-saving environment-friendly burner capable of simultaneously carrying out mixed combustion control on multiple fuels.
Background
Sewage treatment plant sludge is a sewage treatment product and comprises a microorganism group, organic substances, inorganic substances and the like. After every ten thousand cubic meters of sewage is treated, about 5 to 10 tons of sludge (with the water content of 80%) is produced. The sludge contains pathogens, heavy metals, persistent organic matters and other toxic and harmful substances, is not treated effectively, is extremely easy to cause secondary pollution to groundwater, soil and the like, directly threatens the environmental safety and public health, and greatly reduces the environmental benefit of sewage treatment facilities.
Along with the rapid improvement of sewage treatment capability, the effluent standard of a sewage plant is improved, and the sludge quantity is also synchronously and greatly increased. By 2017, urban and county integrated wastewater treatment plants 3976 are built nationwide, the wastewater treatment capacity reaches 1.7 hundred million cubic meters per day, and 4000 ten thousand tons of sludge with 80% of water content are produced annually. It is expected that in 2018, the urban sewage annual throughput of China breaks through 600 hundred million tons, and then the annual 80% wet sludge yield of China in 2018 exceeds 5000 ten thousand tons.
Various drawbacks of traditional sludge disposal and general carbonization: sanitary landfill needs to occupy a large amount of land, and leachate, landfill gas (the main component is methane) and the like generated after landfill, such as secondary pollution and safety problems caused by improper treatment; the sludge incineration has good volume reduction effect and high harmless degree, but has large equipment investment and high energy consumption and process technical requirements, and can generate a series of environmental protection problems such as dust, sulfur dioxide, dioxin and other atmospheric pollution; the existing sludge carbonization technology in the market is not mature enough, and has the problems of high cost, low heat efficiency, large energy consumption, high equipment loss, large odor release amount and the like.
Therefore, in order to solve the problem of large energy consumption of the traditional carbonization treatment process and solve the problem that the burners of the ignition devices of the traditional carbonization furnace and the drying furnace generally only burn a single heat source (natural gas), it is important to design a porous energy-saving environment-friendly burner capable of simultaneously mixing and controlling combustion of multiple fuels.
Disclosure of Invention
In view of the above, the invention provides an energy-saving and environment-friendly porous combustor for sludge recycling, which is designed successfully to enable a carbonization furnace and a drying furnace to directly utilize pyrolysis gas generated by the carbonization furnace under the participation of combustion-supporting gas, thereby greatly reducing the energy consumption of a system, realizing energy recycling, reducing the running cost of a carbonization section and a drying section for sludge recycling treatment and reducing the emission of pollutants.
The invention also provides a sludge recycling system applying the burner.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the energy-saving environment-friendly porous combustor for sludge recycling comprises a natural gas inflow channel, a pyrolysis gas inflow channel, a combustion-supporting gas inflow channel, a gas mixing channel and a control system;
the outlets of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all communicated with the gas mixing channel; valves of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all connected with the control system;
the control system can open the natural gas inflow channel and the combustion-supporting gas inflow channel and cut off the pyrolysis gas inflow channel under the condition that the temperature in the furnace to be heated is lower than a first preset temperature;
the control system can open the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel under the condition that the temperature in the furnace to be heated is not lower than the first preset temperature and not higher than the second preset temperature;
the control system can close the gas inflow channel and open the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel under the condition that the temperature in the furnace to be heated is higher than the second preset temperature.
Preferably, the control system is further capable of reducing the air inflow of the natural gas inflow channel to a preset value under the condition that the temperature in the heating furnace is not lower than the first preset temperature and not higher than the second preset temperature.
Preferably, the natural gas inflow channel, the pyrolysis gas inflow channel and/or the combustion-supporting gas inflow channel are annular channels and are sleeved to form a sleeve structure.
Preferably, the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are natural gas annular inflow channels, pyrolysis gas annular inflow channels and combustion-supporting gas annular inflow channels which are sleeved in sequence from inside to outside.
Preferably, the device further comprises an ignition device, and the arrangement direction of the ignition device is parallel or perpendicular to the axial direction of the sleeve structure.
Preferably, the system further comprises a flame monitoring device connected with the control system in a communication way, and the control system can control the natural gas inflow channel and the pyrolysis gas inflow channel to be cut off when the flame monitoring device detects no flame.
Preferably, the device further comprises a wind disc arranged in the gas mixing channel and used for controlling the direction of the air flow;
the outlets of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all communicated with the wind disc.
Preferably, the wind disc is made of stainless steel high-temperature resistant materials.
The sludge recycling system comprises a carbonization furnace and a drying furnace, wherein the carbonization furnace and/or a combustor of the drying furnace is the energy-saving environment-friendly porous combustor for recycling sludge.
Preferably, the energy-saving and environment-friendly porous combustors for recycling the sludge are staggered on two sides of the carbonization furnace and/or the drying furnace.
According to the technical scheme, the sludge recycling system and the energy-saving environment-friendly porous combustor thereof can simultaneously mix and control the combustion of various fuels, and particularly, the device can directly utilize new pyrolysis gas energy generated by the carbonization furnace under the participation of combustion-supporting gas, thereby greatly reducing the energy consumption of the system, realizing energy recycling, reducing pollutant emission, and the like.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a left-hand structure of an energy-saving and environment-friendly porous combustor for sludge recycling provided by an embodiment of the invention;
fig. 2 is a schematic diagram of front view structure of inlet arrangement of an energy-saving and environment-friendly porous combustor for sludge recycling according to an embodiment of the invention.
Wherein, 1 is a natural gas annular inflow channel, 2 is a pyrolysis gas annular inflow channel, 3 is a combustion-supporting gas annular inflow channel, 4 is an ignition device, and 5 is a flame monitoring device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides an energy-saving and environment-friendly porous combustor for sludge recycling, which comprises a natural gas inflow channel, a pyrolysis gas inflow channel, a combustion-supporting gas inflow channel, a gas mixing channel and a control system;
the outlets of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all communicated with the gas mixing channel; valves of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all connected with a control system;
the control system can open the natural gas inflow channel and the combustion-supporting gas inflow channel and cut off the pyrolysis gas inflow channel under the condition that the temperature in the furnace to be heated (such as a carbonization furnace and a drying furnace) is lower than a first preset temperature;
the control system can open the gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel under the condition that the temperature in the furnace to be heated is not lower than a first preset temperature and not higher than a second preset temperature;
the control system can close the natural gas inflow channel and open the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel under the condition that the temperature in the furnace to be heated is higher than a second preset temperature.
Working principle:
the first stage: when the furnace body temperature is lower (lower than a first preset temperature) and no pyrolysis gas is generated, the system automatically opens an inlet channel of natural gas and an inlet channel of combustion-supporting gas (such as air) through analysis of a control system (such as PLC), so that after the two gases are mixed, the two gases are sprayed out from a combustion port for combustion;
and a second stage: when pyrolysis gas is generated at a higher furnace body temperature (not lower than a first preset temperature and not higher than a second preset temperature), the system automatically opens a pyrolysis gas inlet channel, and three gases of natural gas, pyrolysis gas and air can be simultaneously mixed and combusted in the initial stage;
when a large amount of stable pyrolysis gas is generated (higher than a second preset temperature) at a higher furnace body temperature, the system automatically cuts off a natural gas inlet channel, and only through combined combustion of the pyrolysis gas and air, the extra energy consumption is reduced, and the cost is saved;
and a third stage: along with the continuous pyrolysis of organic matters in the carbonization process, the content of the organic matters in the sludge is continuously reduced, and pyrolysis gas is continuously reduced, so that when the consumption of the pyrolysis gas generated by the system is insufficient to support the carbonization furnace and the drying furnace for use (not higher than a second preset temperature), the system automatically opens a natural gas inlet and adjusts the consumption of the natural gas to ensure the supply of heat of the system.
According to the technical scheme, the energy-saving and environment-friendly porous combustor for sludge recycling provided by the embodiment of the invention has the advantages that the energy consumption of the system is greatly reduced, the energy recycling is realized, and the pollutant emission is reduced by realizing different combinations of three fuels (namely natural gas and air in the first stage, natural gas and air in the second stage and pyrolysis gas and air in the third stage).
Preferably, the control system is further capable of reducing the intake air amount of the natural gas intake passage to a preset value in a case where the temperature in the furnace to be heated is not lower than a first preset temperature and not higher than a second preset temperature. At this time, corresponding to the condition that pyrolysis gas is generated when the temperature of the furnace body is higher in the second stage, because the pyrolysis gas starts to be used as fuel gas to participate in combustion, compared with the first stage, the natural gas feeding is reduced, the same heating effect can be realized, and the energy consumption of the system can be reduced. The specific to preset value to which the natural gas intake amount is reduced can be determined by a person skilled in the art according to the condition and temperature of the sludge in the furnace to be heated.
In order to further optimize the above technical solution, the natural gas inflow channel, the pyrolysis gas inflow channel and/or the combustion-supporting gas inflow channel are annular channels, and are sleeved to form a sleeve structure, which can be shown in fig. 1. The sleeve has the advantages that: 1. the fuel mixing is more uniform, the combustion temperature is uniform, the combustion is more complete, high-temperature points are not generated, the generation of nitrogen oxides is less, the space is saved, and the structure is compact.
Specifically, the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are a natural gas annular inflow channel 1, a pyrolysis gas annular inflow channel 2 and a combustion-supporting gas annular inflow channel 3 which are sleeved in sequence from inside to outside. The sleeve sequence can fully utilize the heat value of each gas, and the combustion effect is improved; the heat value of the natural gas is highest, the pyrolysis gas is in the innermost secondary circle, and the air fuel gas is in the outer circle.
The embodiment of the invention provides an energy-saving and environment-friendly porous combustor for sludge recycling, which also comprises an ignition device 4, wherein the arrangement direction of the ignition device 4 is parallel or perpendicular to the axial direction of a sleeve structure, and the structure can be shown by referring to fig. 1 and 2. To prevent excessive air flow from blowing out the ignition flame, the ignition device 4 can be arranged in different directions, and can be parallel to, perpendicular to or in other directions with respect to the burner. Preferably, the ignition device 4 is made of steel high-temperature resistant materials, the ignition fuel is natural gas and air, and the temperature of hot air can reach 1100 ℃.
The energy-saving environment-friendly porous combustor for sludge recycling provided by the embodiment of the invention further comprises a flame monitoring device 5 which is connected with a control system in a communication way, wherein the control system can control to cut off a natural gas inflow channel and a pyrolysis gas inflow channel when the flame monitoring device 5 detects no flame. The flame monitoring device 5 mainly comprises a probe and a signal processor, and outputs a switching value signal indicating whether flame exists or not. When no flame is detected, the flame monitoring device 5 transmits a signal to a control system (such as a PLC device), the PLC device controls a fuel valve to cut off fuel supply and starts a purging ventilation system to clean fuel entering the furnace body, so that excessive accumulation of fuel in the furnace body is prevented, and the ignition is started again to cause explosion. When flame is detected to be generated, the flame monitoring device transmits a signal to the PLC device, and the PLC device controls the fuel control valve to continue fuel supply, so that continuous ignition is ensured. Specifically, the flame monitoring device adopts an ultraviolet flame detector according to the flame temperature. Furthermore, the flame monitoring device 5 keeps a certain distance from the ignition device 4, so that the interference of the ignition device 4 can be eliminated, the main flame can be better detected, and the accuracy is improved; the structure can be shown with reference to fig. 1, and the flame monitoring device 5 and the ignition device 4 are respectively positioned at two radial ends of the sleeve.
The energy-saving and environment-friendly porous combustor for sludge recycling provided by the embodiment of the invention also comprises a wind disc which is arranged in the gas mixing channel and is used for controlling the direction of the air flow;
the outlets of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all communicated with the wind disc. The burner adopts the wind disc to control the direction of the air flow, so that the air flow is changed in the direction of the air flow under the action of the wind disc, rotational flow and the like are generated, the natural air flow, the air flow and the pyrolysis air flow are uniformly mixed, and the air excess coefficient is controlled, so that the burnout degree of the pyrolysis air is improved, the combustion efficiency is improved, the flame temperature is reduced, and the emission of pollutants is reduced.
Preferably, the wind disc is made of stainless steel high-temperature resistant material and has corrosion resistance. The energy-saving environment-friendly porous combustor for sludge recycling provided by the embodiment of the invention also comprises a combustion chamber positioned behind the wind disc, wherein the combustion chamber has the effects of mixing and igniting.
The embodiment of the invention also provides a sludge recycling system, which comprises the carbonization furnace and the drying furnace and is characterized in that the burner of the carbonization furnace and/or the drying furnace is the energy-saving environment-friendly porous burner for recycling sludge. Through the perception to the temperature, control system (like PLC) control valve control fuel's entering amount, PLC sets up to use pyrolysis gas combustion preferentially, just stops the supply of natural gas when pyrolysis gas can satisfy furnace body temperature, reduces extra energy consumption, practices thrift the cost.
In order to further optimize the technical scheme, the energy-saving and environment-friendly porous combustors for sludge recycling are staggered on two sides of the carbonization furnace and/or the drying furnace. The burners are arranged on the two sides of the furnace chamber of the carbonization furnace and the furnace body of the drying furnace in a staggered way, so that the consumption of the burners can be reduced, and the heating uniformity of the carbonization furnace and the drying furnace can be ensured.
The present solution is further described below in connection with specific embodiments:
the burner adopts a sleeve mode, and comprises a natural gas annular inflow channel, a combustion-supporting gas air annular inflow channel, a pyrolysis gas annular inflow channel, a wind disc, a gas mixing channel, an air-fuel mixing chamber, a combustion chamber and the like which are built in a burner body, wherein the burner sleeve is manufactured by adopting a baked brick, the shape of the baked brick is determined according to the sectional shape of the design of the combustion point of a carbonization furnace and a drying furnace, and the compactness of the structure and the tightness of the system are maintained.
The burner has the following combustion modes: the burner achieves the aims of combustion and energy saving by realizing different combinations of three fuels, namely natural gas, pyrolysis gas and air. 1. Natural gas and air, 2, natural gas, pyrolysis gas and air, 3, pyrolysis gas and air. The implementation process is as follows: (1) When the furnace body temperature is low and no pyrolysis gas is generated, the system automatically opens an inlet channel of natural gas and an inlet channel of air through analysis of a PLC control system, so that the two gases are fully mixed after being sprayed out from a combustion port for combustion. (2) When the furnace body temperature is higher and has pyrolysis gas to produce, the system opens pyrolysis gas inlet channel automatically, and the initial stage can adopt natural gas, pyrolysis gas and three kinds of gas simultaneous mixing burning of air, and when the furnace body temperature is higher and has a large amount of stable pyrolysis gas to produce, the system cuts off natural gas inlet channel automatically, only through pyrolysis gas and air's combination burning, reduces extra energy consumption, practices thrift the cost. Along with the continuous pyrolysis of organic matters in the carbonization process, the content of the organic matters in the sludge is continuously reduced, and pyrolysis gas is also continuously reduced, so that when the consumption of the pyrolysis gas generated by the system is insufficient to support the carbonization furnace and the drying furnace for use, the system automatically opens a natural gas inlet and adjusts the consumption of the natural gas to ensure the supply of heat of the system.
Through the automatic measurement of thermocouple pair temperature in retort and the dry-off oven, transmit measuring signal to PLC, further regulate and control the opening of each valve passageway such as natural gas, air, pyrolysis gas through automatic control system, according to furnace body temperature condition, realize the free combination burning of multiple fuel, reach energy maximize and utilize, abundant energy saving and cost.
In summary, in order to solve the problem that the burners of the ignition devices of the traditional carbonization furnace and the drying furnace generally only burn a single heat source (natural gas), the embodiment of the invention discloses a porous energy-saving burner capable of simultaneously mixing and controlling combustion of multiple fuels, and particularly the device can directly utilize new pyrolysis gas energy generated by the carbonization furnace under the participation of combustion-supporting gas, thereby greatly reducing the energy consumption of the system, realizing energy recycling and reducing pollutant emission, and having the advantages of low manufacturing cost, simple structure, convenient replacement, durability and the like. The embodiment of the invention also discloses a sludge recycling system applying the burner.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The energy-saving environment-friendly porous combustor for sludge recycling is characterized by comprising a natural gas inflow channel, a pyrolysis gas inflow channel, a combustion-supporting gas inflow channel, a gas mixing channel and a control system;
the outlets of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all communicated with the gas mixing channel; valves of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all connected with the control system;
the control system can open the natural gas inflow channel and the combustion-supporting gas inflow channel and cut off the pyrolysis gas inflow channel under the condition that the temperature in the furnace to be heated is lower than a first preset temperature;
the control system can open the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel under the condition that the temperature in the furnace to be heated is not lower than the first preset temperature and not higher than the second preset temperature;
the control system can close the fuel gas inflow channel and open the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel under the condition that the temperature in the furnace to be heated is higher than the second preset temperature;
the control system can also reduce the air inflow of the natural gas inflow channel to a preset value under the condition that the temperature in the to-be-heated furnace is not lower than the first preset temperature and not higher than the second preset temperature;
the natural gas inflow channel, the pyrolysis gas inflow channel and/or the combustion-supporting gas inflow channel are annular channels and are sleeved to form a sleeve structure;
the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are a natural gas annular inflow channel (1), a pyrolysis gas annular inflow channel (2) and a combustion-supporting gas annular inflow channel (3) which are sleeved in sequence from inside to outside.
2. The energy-saving and environment-friendly porous burner for sludge recycling according to claim 1, further comprising an ignition device (4), wherein the ignition device (4) is arranged in a direction parallel or perpendicular to the axial direction of the sleeve structure.
3. The energy-saving and environment-friendly porous burner for sludge recycling according to claim 1, further comprising a flame monitoring device (5) in communication with the control system, wherein the control system is capable of controlling the cutting-off of the natural gas inflow channel and the pyrolysis gas inflow channel when the flame monitoring device (5) detects no flame.
4. The energy-saving and environment-friendly porous combustor for recycling sludge according to claim 1, further comprising a wind disc arranged in the gas mixing channel and used for controlling the direction of the gas flow;
the outlets of the natural gas inflow channel, the pyrolysis gas inflow channel and the combustion-supporting gas inflow channel are all communicated with the wind disc.
5. The energy-saving and environment-friendly porous burner for recycling sludge according to claim 4, wherein the wind disc is made of stainless steel high-temperature resistant materials.
6. A sludge recycling system comprising a carbonization furnace and a drying furnace, wherein the carbonization furnace and/or the drying furnace burner is the sludge recycling energy-saving environment-friendly porous burner as claimed in any one of claims 1 to 5.
7. The sludge recycling system according to claim 6, wherein the energy-saving and environment-friendly porous burners for sludge recycling are staggered on both sides of the carbonization furnace and/or the drying furnace.
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| CN201811183344.5A CN108954312B (en) | 2018-10-11 | 2018-10-11 | Sludge recycling system and energy-saving environment-friendly porous combustor thereof |
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| CN201811183344.5A CN108954312B (en) | 2018-10-11 | 2018-10-11 | Sludge recycling system and energy-saving environment-friendly porous combustor thereof |
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| CN108954312A CN108954312A (en) | 2018-12-07 |
| CN108954312B true CN108954312B (en) | 2024-01-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900702298A (en) * | 1988-09-02 | 1990-12-06 | 마이클 지트만 그레고리 | High-temperature emitting flame generation method and apparatus |
| EP1045203A1 (en) * | 1999-04-16 | 2000-10-18 | Entreprise Generale De Chauffage Industriel Pillard | Multifuel burner |
| CN103697469A (en) * | 2013-11-20 | 2014-04-02 | 西安交通大学 | Pulverized coal flame preheating low NOx burner system |
| CN204042896U (en) * | 2014-08-19 | 2014-12-24 | 中国科学院工程热物理研究所 | Reduce burner and the gas fired-boiler of discharged nitrous oxides |
| CN204535076U (en) * | 2014-12-10 | 2015-08-05 | 湖南华银能源技术有限公司 | A kind of heat smoke producer of lower heat of combustion coal pyrolysis gas |
| CN105737152A (en) * | 2016-03-10 | 2016-07-06 | 陈维汉 | Combusting device for low nitrogen combustion of classification pre-mixed swirling flow |
-
2018
- 2018-10-11 CN CN201811183344.5A patent/CN108954312B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900702298A (en) * | 1988-09-02 | 1990-12-06 | 마이클 지트만 그레고리 | High-temperature emitting flame generation method and apparatus |
| EP1045203A1 (en) * | 1999-04-16 | 2000-10-18 | Entreprise Generale De Chauffage Industriel Pillard | Multifuel burner |
| CN103697469A (en) * | 2013-11-20 | 2014-04-02 | 西安交通大学 | Pulverized coal flame preheating low NOx burner system |
| CN204042896U (en) * | 2014-08-19 | 2014-12-24 | 中国科学院工程热物理研究所 | Reduce burner and the gas fired-boiler of discharged nitrous oxides |
| CN204535076U (en) * | 2014-12-10 | 2015-08-05 | 湖南华银能源技术有限公司 | A kind of heat smoke producer of lower heat of combustion coal pyrolysis gas |
| CN105737152A (en) * | 2016-03-10 | 2016-07-06 | 陈维汉 | Combusting device for low nitrogen combustion of classification pre-mixed swirling flow |
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| CN108954312A (en) | 2018-12-07 |
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