CN209130870U - A kind of recycling sludge utilizes system and its energy conservation and environmental protection multi-orifice burner - Google Patents
A kind of recycling sludge utilizes system and its energy conservation and environmental protection multi-orifice burner Download PDFInfo
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- CN209130870U CN209130870U CN201821648139.7U CN201821648139U CN209130870U CN 209130870 U CN209130870 U CN 209130870U CN 201821648139 U CN201821648139 U CN 201821648139U CN 209130870 U CN209130870 U CN 209130870U
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Abstract
The utility model discloses a kind of recycling sludges to utilize energy conservation and environmental protection multi-orifice burner, using sleeve mode, including being built in natural gas ring shape influent stream channel, combustion-supporting gas air annular influent stream channel, pyrolysis gas ring shape influent stream channel, wind disk, combustion gas mixing channel, air-fuel mixing chamber, combustion chamber etc. wherein.The burner can carry out mixing control burning to pluralities of fuel simultaneously, the pyrolysis gas new energy that especially can be directly generated using retort in the presence of combustion-supporting gas, system energy consumption is greatly lowered, realize energy recycling, pollutant emission is reduced, and has many advantages, such as that low cost, structure are simple, replacement is convenient, durable.The invention also discloses a kind of recycling sludges using said burner to utilize system.
Description
Technical field
The utility model relates to recycling sludges to utilize fuel combustion control device technical field, in particular to can be simultaneously
The Multi-hole energy-saving environmental protection burner for being mixed and burned control is carried out to pluralities of fuel.
Background technique
Sludge of sewage treatment plant is that product of sewage treatment, including micropopulation, organic substance and inorganic substances etc. are several
Part.5~10 tons of sludge (moisture content 80%) is about generated after every ten thousand stere sewage treatment.Contain pathogen, a huge sum of money in sludge
Belong to and secondary dirt easily is caused to underground water, soil etc. without disposition is effectively treated with poisonous and harmful substances such as persistent organisms
Dye, direct threatening environment safety and public health, substantially reduce the environmental benefit of sewage treatment facility.
With the quick raising of sewage treatment capacity, the promotion of sewage effluents standard, sludge quantity is also synchronized and is significantly increased.
By 2017, national the planned city, county be accumulative to build up sewage treatment plant 3976, sewage treatment capacity up to 1.7 billion cubic meters/
Day, year generates more than 4,000 ten thousand tons of sludge of 80% moisture content.It is expected that 2018, China's town sewage annual amount for the treatment of will break through 600
Hundred million tons, then, national 80% wet mud annual output will be more than 50,000,000 tons within 2018.
The various drawbacks of traditional sludge disposition and general charing project: sanitary landfills need to occupy a large amount of soils, produce after landfill
Raw percolate, landfill gas (main component is methane) etc., such as deal with improperly and easily cause secondary pollution and safety problem；Sludge is burnt
It is good to burn volume reduction effect, innoxious degree is high, but equipment investment is big, and energy consumption and process specifications are high, and can generate dust, dioxy
Change a series of environmental issues such as the atmosphere pollution such as sulphur, dioxin；Existing sludge carbonization technology is not mature enough on the market, exists into
The problems such as this height, the thermal efficiency are low, energy consumption is big, equipment loss is high, foul smell burst size is big.
Therefore, to solve the problems, such as that the energy consumption of traditional charing process technique is big, traditional retort, desiccation furnace point are solved
The burning that device burner generally only carries out single source (natural gas) is fired, one kind is designed and can while pluralities of fuel be mixed
The Multi-hole energy-saving environmental protection burner for closing control burning is most important.
Utility model content
In view of this, the present invention provides a kind of recycling sludges to utilize energy conservation and environmental protection multi-orifice burner, the burning
Device designs the pyrolysis gas for generating retort and desiccation furnace directly using retort in the presence of combustion-supporting gas, greatly
Amplitude reduction system energy consumption, realizes energy recycling, reduce recycling sludge disposition charing section, desiccation section operation at
This, reduces the discharge of pollutant.
The utility model additionally provides a kind of recycling sludge using said burner and utilizes system.
To achieve the above object, the utility model provides the following technical solutions:
A kind of recycling sludge utilizes energy conservation and environmental protection multi-orifice burner, including natural gas influent stream channel, pyrolysis gas influent stream are logical
Road, combustion-supporting gas influent stream channel, combustion gas mixing channel and control system；
Natural gas influent stream channel, pyrolysis gas influent stream channel are connected to the outlet in the combustion-supporting gas influent stream channel
In the combustion gas mixing channel；Natural gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel
Valve be all connected to the control system；
The control system can open the day in the case where the temperature in hot stove to be added is lower than the first preset temperature
Right gas influent stream channel and the combustion-supporting gas influent stream channel, cut off pyrolysis gas influent stream channel；
The control system not less than first preset temperature and can be not higher than in the temperature in the hot stove to be added
In the case where second preset temperature, the right gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream are opened
Channel；
The control system can be closed when the temperature in the hot stove to be added is higher than second preset temperature
Pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel are opened in the right gas influent stream channel.
Preferably, the control system can also be not less than first preset temperature in the temperature in the hot stove to be added
And not higher than in the case where the second preset temperature, reducing the air inflow in natural gas influent stream channel to preset value.
Preferably, natural gas influent stream channel, pyrolysis gas influent stream channel and/or the combustion-supporting gas influent stream channel are
Circular passage, and it is set with composition tube-in-tube structure.
Preferably, natural gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel are served as reasons
It is interior to the natural gas ring shape influent stream channel being successively arranged outside, pyrolysis gas ring shape influent stream channel and combustion-supporting gas ring shape influent stream channel.
It preferably, further include igniter, the setting direction of the igniter is axial parallel with the tube-in-tube structure
Or it is vertical.
It preferably, further include communication connection in the flame monitoring apparatus of the control system, the control system can be
When the flame monitoring apparatus detects no flame, control cutting natural gas influent stream channel and the pyrolysis gas influent stream are logical
Road.
It preferably, further include being arranged in the combustion gas mixing channel, for controlling the wind disk of airflow direction；
Natural gas influent stream channel, pyrolysis gas influent stream channel are connected to the outlet in the combustion-supporting gas influent stream channel
In the wind disk.
Preferably, the wind disk uses stainless steel heat-resisting material.
A kind of recycling sludge utilizes system, including retort and desiccation furnace, the retort and/or the desiccation furnace
Burner is that above-mentioned recycling sludge such as utilizes energy conservation and environmental protection multi-orifice burner.
Preferably, the recycling sludge is using energy conservation and environmental protection multi-orifice burner in the retort and/or the desiccation
The two sides of furnace are staggered.
It can be seen from the above technical scheme that recycling sludge provided by the utility model utilizes system and its energy-saving ring
Multi-orifice burner is protected, the Multi-hole energy-saving burner of mixing control burning, the especially device can be carried out to pluralities of fuel simultaneously
The pyrolysis gas new energy that can be directly generated using retort in the presence of combustion-supporting gas, is greatly lowered system energy consumption, realized
Energy recycling reduces pollutant emission, and has low cost, advantages of simple structure and simple.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the left view structure that recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection multi-orifice burner
Schematic diagram；
Fig. 2 is each import cloth that recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection multi-orifice burner
Set positive structure diagram.
Wherein, 1 is natural gas ring shape influent stream channel, and 2 is logical for combustion-supporting gas ring shape influent stream for pyrolysis gas ring shape influent stream channel, 3
Road, 4 be igniter, and 5 be flame monitoring apparatus.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection multi-orifice burner, including natural gas influent stream
Channel, pyrolysis gas influent stream channel, combustion-supporting gas influent stream channel, combustion gas mixing channel and control system；
Wherein, the outlet in natural gas influent stream channel, pyrolysis gas influent stream channel and combustion-supporting gas influent stream channel is connected to combustion gas
Hybrid channel；The valve in natural gas influent stream channel, pyrolysis gas influent stream channel and combustion-supporting gas influent stream channel is all connected to control system；
Control system can be the case where the temperature in hot stove to be added (such as retort, desiccation furnace) be lower than the first preset temperature
Under, natural gas influent stream channel and combustion-supporting gas influent stream channel are opened, pyrolysis gas influent stream channel is cut off；
Control system not less than the first preset temperature and can be not higher than the second preset temperature in the temperature in hot stove to be added
In the case where, open right gas influent stream channel, pyrolysis gas influent stream channel and combustion-supporting gas influent stream channel；
Control system it is logical can to close right gas influent stream when the temperature in hot stove to be added is higher than the second preset temperature
Pyrolysis gas influent stream channel and combustion-supporting gas influent stream channel are opened in road.It should be noted that the principle of above-mentioned control and realization are to be based on
The prior art is consequently belonging to the protection object of utility model, similarly hereinafter.
Working principle:
First stage: when furnace body temperature lower (be lower than the first preset temperature) is generated without pyrolysis gas, (such as by control system
PLC it) analyzes, system automatically opens the intake channel of natural gas and the intake channel of combustion-supporting gas (such as air), so that two kinds of gases
After mixing, is sprayed and burnt by port；
Second stage: (not less than the first preset temperature and second is not higher than when furnace body temperature is higher pyrolysis gas generation
Preset temperature), system automatically opens pyrolysis gas intake channel, and initial stage can use three kinds of natural gas, pyrolysis gas and air gases
It is mixed and burned simultaneously；
(it is higher than the second preset temperature) when furnace body temperature is higher has largely stable pyrolysis gas to generate, system is automatically cut off
Imported gas channel only passes through the combined burning of pyrolysis gas and air, reduces additional energy consumption, save the cost；
Phase III: with the progress of carbonization process, the lasting pyrolysis of organic matter, the content of organic matter constantly subtracts in sludge
Few, pyrolysis gas is also constantly reduced therewith, when the pyrolysis gas dosage that system generates is not enough to that retort and desiccation furnace is supported to use
(being not higher than the second preset temperature), system automatically opens Imported gas and adjusts natural gas dosage to guarantee the confession of system thermal
It answers.
It can be seen from the above technical scheme that recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection
Multi-orifice burner, by realizing three kinds of natural gas, pyrolysis gas and air fuel different combination (first stage: natural gas and sky
Gas, second stage: natural gas, pyrolysis gas and air, phase III: cracking gas and air), system energy consumption is greatly lowered, it is real
Show energy recycling, reduces pollutant emission.
Preferably, control system can also be in the temperature in hot stove to be added not less than the first preset temperature and not higher than the
In the case where two preset temperatures, the air inflow in natural gas influent stream channel is reduced to preset value.Second stage furnace body temperature is corresponded at this time
Degree is higher the case where pyrolysis gas generation, since pyrolysis gas participates in burning initially as combustion gas, then compared to the first stage, naturally
Even if the feeding of gas is reduced, same heating effect also can be realized, can reduce system energy consumption.Natural gas air inflow is reduced to
Specific preset value can be determined by those skilled in the art according to sludge situation in hot stove to be added and temperature.
In order to advanced optimize above-mentioned technical solution, natural gas influent stream channel, pyrolysis gas influent stream channel and/or combustion-supporting gas
Influent stream channel is circular passage, and is set with composition tube-in-tube structure, is referred to shown in Fig. 1.The advantages of using sleeve are as follows: 1, make
The mixing of various fuel more evenly, 2, ignition temperature it is uniform, burn more abundant, do not generate high temperature dot, the generation of less nitrogen oxides,
3, space is saved, construction is close.
Specifically, natural gas influent stream channel, pyrolysis gas influent stream channel and combustion-supporting gas influent stream channel are successively to cover from the inside to the outside
If natural gas ring shape influent stream channel 1, pyrolysis gas ring shape influent stream channel 2 and combustion-supporting gas ring shape influent stream channel 3.Sleeve so is suitable
Sequence can make full use of the calorific value of each gas, improve combustion efficiency；The calorific value highest of natural gas, in most the inside, pyrolysis gas energy
Take second place in secondary circle, air-breathing gas minimum energy is in outer ring.
Recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection multi-orifice burner, further includes igniter
4, the setting direction of the igniter 4 is axial parallel or vertical with tube-in-tube structure, and structure is referred to shown in Fig. 1 and Fig. 2.
To prevent air quantity is excessive from ignition flame is blown out, the settable different directions of igniter 4, can it is parallel with burner, vertical or its
His direction.Preferably, igniter 4 uses steel heat-resisting material, and igniter fuel uses natural gas and air, point and then hot wind
Temperature is up to 1100 DEG C.
Recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection multi-orifice burner, further includes communication connection
In the flame monitoring apparatus 5 of control system, control system can control cutting when flame monitoring apparatus 5 detects no flame
Natural gas influent stream channel and pyrolysis gas influent stream channel.Flame monitoring apparatus 5 is mainly made of probe and signal processor two parts,
Output indicates whether or not there is the on-off model of flame.When detecting no flame, flame monitoring apparatus 5 passes the signal to control system
It unites (such as PLC device), PLC device controls the supply of fuel valve fuel shutoff, and starts purging ventilating system, and cleaning enters furnace body
Fuel prevents furnace body fuel from building up excessive, is again started up to light and sets off an explosion.When having detected flame generation, flame prison
Survey device and say that signal is transmitted to PLC device, PLC device controls fuel control valve door and continues fuel supply, guarantee light continue into
Row.Specifically, using ultraviolet light flame detector according to this flame monitoring apparatus of flame temperature.Further, this flame monitoring
Device 5 and igniter 4 keep certain distance, can eliminate the interference of igniter 4, preferably detect main flame, and it is accurate to improve
Property；Its structure is referred to shown in Fig. 1, and flame monitoring apparatus 5 and igniter 4 are located at the both ends of sleeve radial direction.
Recycling sludge provided by the embodiment of the utility model utilizes energy conservation and environmental protection multi-orifice burner, further includes that setting is being fired
In gas hybrid channel, for controlling the wind disk of airflow direction；
The outlet in natural gas influent stream channel, pyrolysis gas influent stream channel and combustion-supporting gas influent stream channel is connected to wind disk.The combustion
Burner generates eddy flow so that the change of airflow direction occurs under the action of wind disk for air-flow using the direction of wind disk control air-flow
Deng, make natural gas flow, air stream, pyrolysis air-flow uniformly mix, control excess air factor, to improve pyrolysis gas after-flame journey
Degree improves efficiency of combustion, reduces flame temperature, reduces the discharge of pollutant.
Preferably, wind disk uses stainless steel heat-resisting material, there is corrosion resistance.It is provided by the embodiment of the utility model
Recycling sludge utilizes energy conservation and environmental protection multi-orifice burner, further includes in the subsequent combustion chamber of wind disk, which has simultaneously
The effect for mixing and lighting.
The utility model embodiment additionally provides a kind of recycling sludge using system, including retort and desiccation furnace,
It is characterized in that, the burner of retort and/or desiccation furnace is that above-mentioned recycling sludge such as utilizes energy conservation and environmental protection multi-orifice burner.
By the perception to temperature, control system (such as PLC) control valve controls the inlet of fuel, and PLC setting is preferentially using pyrolysis
Gas burning, just stops the supply of natural gas when pyrolysis gas can satisfy furnace body temperature, reduces additional energy consumption, saves
About cost.
In order to advanced optimize above-mentioned technical solution, recycling sludge is using energy conservation and environmental protection multi-orifice burner in retort
And/or the two sides of desiccation furnace are staggered.Burner is staggered in retort furnace chamber and desiccation furnace body two sides, pacifies in this way
Row, it is possible to reduce the dosage of burner and guarantee the heated uniformity of retort and desiccation furnace.
This programme is described further combined with specific embodiments below:
This burner uses sleeve mode, including being built natural gas ring shape influent stream channel in burner body, being helped
Gas-air annular influent stream channel, pyrolysis gas ring shape influent stream channel, wind disk, combustion gas mixing channel, air-fuel mixing chamber, combustion chamber
Deng, burner muffle using manufacture of baking bricks, the shape baked bricks according to retort, desiccation furnace burn point design cross sectional shape and
It is fixed, keep the compactness of structure, the leakproofness of system.
Burner has following several combustion systems: burner is by realizing three kinds of natural gas, pyrolysis gas and air fuel not
Same combination reaches burning, energy-efficient purpose.1, natural gas and air, 2, natural gas, pyrolysis gas and air, 3, cracking gas and sky
Gas.Realization process is as follows: (1) when the lower no pyrolysis gas generation of furnace body temperature, being analyzed by PLC control system, system is beaten automatically
The intake channel of natural gas and the intake channel of air are opened, so that being sprayed after two kinds of gases are sufficiently mixed after wind disk by port
It burns out.(2) when furnace body temperature is higher pyrolysis gas generation, system automatically opens pyrolysis gas intake channel, and initial stage can adopt
It is mixed and burned simultaneously with three kinds of natural gas, pyrolysis gas and air gases, there is largely stable pyrolysis gas to produce when furnace body temperature is higher
When raw, system automatically cuts off Imported gas channel, only passes through the combined burning of pyrolysis gas and air, reduces the additional energy and disappear
Consumption, save the cost.With the progress of carbonization process, the lasting pyrolysis of organic matter, the content of organic matter is constantly reduced in sludge, is pyrolyzed
Gas also therewith constantly reduce, when system generate pyrolysis gas dosage be not enough to support retort and desiccation furnace in use, system from
It is dynamic to open Imported gas and adjust natural gas dosage to guarantee the supply of system thermal.
By thermocouple in retort and drying oven to the automatic measurement of temperature, measuring signal is transmitted to PLC, by certainly
Autocontrol system further regulates and controls the opening of each valve passage such as natural gas, air, cracking gas, according to furnace body temperature situation,
It realizes pluralities of fuel independent assortment burning, reaches energy and maximally utilize, abundant energy saving and cost.
In conclusion generally only carrying out single source (naturally to solve traditional retort, desiccation furnace firing device burner
Gas) burning, the utility model embodiment, which discloses, a kind of can carry out the porous of mixing control burning to pluralities of fuel simultaneously
The pyrolysis gas new energy that energy-saving burner, the especially device can directly be generated using retort in the presence of combustion-supporting gas, greatly
Amplitude reduction system energy consumption, realizes energy recycling, reduces pollutant emission, and has that low cost, structure be simple, replacement
The advantages that convenient, durable.The utility model embodiment also discloses a kind of recycling sludge utilization system using said burner
System.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of recycling sludge utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that including natural gas influent stream channel, pyrolysis
Gas influent stream channel, combustion-supporting gas influent stream channel, combustion gas mixing channel and control system；
The outlet in natural gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel is connected to institute
State combustion gas mixing channel；The valve in natural gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel
Door is all connected to the control system；
The control system can open the natural gas in the case where the temperature in hot stove to be added is lower than the first preset temperature
Influent stream channel and the combustion-supporting gas influent stream channel, cut off pyrolysis gas influent stream channel；
The control system not less than first preset temperature and can be not higher than second in the temperature in the hot stove to be added
In the case where preset temperature, it is logical to open natural gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream
Road；
The control system can be when the temperature in the hot stove to be added be higher than second preset temperature, described in closing
Pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel are opened in natural gas influent stream channel.
2. recycling sludge according to claim 1 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that the control
System can also be in the temperature in the hot stove to be added not less than first preset temperature and not higher than the second preset temperature
In the case of, the air inflow in natural gas influent stream channel is reduced to preset value.
3. recycling sludge according to claim 1 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that described natural
Gas influent stream channel, pyrolysis gas influent stream channel and/or the combustion-supporting gas influent stream channel are circular passage, and are set with composition sleeve
Structure.
4. recycling sludge according to claim 3 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that described natural
Gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel are the natural compression ring being successively arranged from the inside to the outside
Shape influent stream channel (1), pyrolysis gas ring shape influent stream channel (2) and combustion-supporting gas ring shape influent stream channel (3).
5. recycling sludge according to claim 3 or 4 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that also wrap
It includes igniter (4), the setting direction of the igniter (4) is axial parallel or vertical with the tube-in-tube structure.
6. recycling sludge according to claim 1 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that further include leading to
News are connected to the flame monitoring apparatus (5) of the control system, and the control system can be examined in the flame monitoring apparatus (5)
When measuring no flame, control cutting natural gas influent stream channel and pyrolysis gas influent stream channel.
7. recycling sludge according to claim 1 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that further include setting
It sets in the combustion gas mixing channel, for controlling the wind disk of airflow direction；
The outlet in natural gas influent stream channel, pyrolysis gas influent stream channel and the combustion-supporting gas influent stream channel is connected to institute
State wind disk.
8. recycling sludge according to claim 7 utilizes energy conservation and environmental protection multi-orifice burner, which is characterized in that the wind disk
Using stainless steel heat-resisting material.
9. a kind of recycling sludge utilizes system, including retort and desiccation furnace, which is characterized in that the retort and/or institute
It states the burner of desiccation furnace and utilizes energy conservation and environmental protection porous burner for the recycling sludge as described in claim 1-8 any one
Device.
10. recycling sludge according to claim 9 utilizes system, which is characterized in that the recycling sludge utilizes section
The environmentally friendly multi-orifice burner of energy is staggered in the two sides of the retort and/or the desiccation furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821648139.7U CN209130870U (en) | 2018-10-11 | 2018-10-11 | A kind of recycling sludge utilizes system and its energy conservation and environmental protection multi-orifice burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821648139.7U CN209130870U (en) | 2018-10-11 | 2018-10-11 | A kind of recycling sludge utilizes system and its energy conservation and environmental protection multi-orifice burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209130870U true CN209130870U (en) | 2019-07-19 |
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ID=67231529
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|---|---|---|---|
| CN201821648139.7U Active CN209130870U (en) | 2018-10-11 | 2018-10-11 | A kind of recycling sludge utilizes system and its energy conservation and environmental protection multi-orifice burner |
Country Status (1)
| Country | Link |
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| CN (1) | CN209130870U (en) |
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2018
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