CN212760318U - Carbon deposition prevention sleeve for fuel oil burner, burner and thermal desorption equipment - Google Patents
Carbon deposition prevention sleeve for fuel oil burner, burner and thermal desorption equipment Download PDFInfo
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- CN212760318U CN212760318U CN202021082745.4U CN202021082745U CN212760318U CN 212760318 U CN212760318 U CN 212760318U CN 202021082745 U CN202021082745 U CN 202021082745U CN 212760318 U CN212760318 U CN 212760318U
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Abstract
The utility model provides a prevent carbon deposit sleeve pipe, combustor and thermal desorption equipment for fuel burner. This prevent carbon deposit sleeve pipe setting includes on the burner port of combustor: the sleeve cavity and an inner injection pipe and an outer injection pipe which are connected with the sleeve cavity; the sleeve cavity is sleeved on the periphery of the combustion port, and an air inlet interface for connecting a gas pipeline is arranged on the sleeve cavity; the inner blowing pipe is positioned inside the combustion port and communicated with the inside of the sleeve cavity; the outer blowing pipe is positioned on the outer side of the combustion port and communicated with the interior of the sleeve cavity; the extension direction of the outer blowing pipe is parallel to the axial direction of the combustion port, and the extension direction of the inner blowing pipe is parallel to the extension direction of the outer blowing pipe. Through the pulse air current that the air compressor machine produced, via outer jetting pipe, interior jetting pipe blowout, can realize automatic carbon deposit and deposition on the burner port of clearance combustor, the clearance process is high-efficient, labour saving and time saving.
Description
Technical Field
The utility model relates to a combustor technical field, in particular to prevent carbon deposit sleeve pipe, combustor and thermal desorption equipment for fuel burner.
Background
The soil thermal desorption technology is one of important remediation means for remedying the polluted soil, and thermal desorption equipment is required for the soil thermal desorption remediation. The combustor is one of the core devices of a whole set of thermal desorption equipment, the stable work of the combustor is the fundamental guarantee of the stable construction of the thermal desorption engineering, but the fuel inevitably can generate the phenomenon of insufficient combustion in the combustion process of the combustor, under the condition, a small amount of carbon black is generated in the fuel combustion, the carbon black is accumulated on the mouth of the combustor for a long time, in addition, under the high-temperature condition in the kiln body of the thermal desorption equipment, the thermal desorption soil is dehydrated and crushed into dust, the dust and the carbon black in the kiln body are mutually adsorbed and bonded on the combustor, the combustion efficiency and the temperature of the combustor are reduced, and even the combustor is blocked to cause the incapability of ignition.
In the prior art, different types of thermal desorption equipment exist, for example, patent document CN209439184U discloses a vertical direct thermal desorption reaction device, which cannot avoid the problem of carbon deposition of a burner, and the carbon deposition cleaning of the device needs to detach and separate a reactor, a grate, the burner and the like of the device and then remove carbon, but the device is inconvenient to detach and wastes time and labor in detachment operation. In addition, there is still a class of thermal desorption equipment that its dismantlement is convenient at present, for example patent document CN209337735U discloses a modularization direct thermal desorption equipment, though this kind of equipment dismouting is relatively convenient, when clearing up the carbon deposit on the thermal desorption combustor, still need shut down dismouting equipment, influence production. In addition, still adopt the mode of artifical clearance to remove carbon behind the operation of dismantling at present, but artifical clearance dust is wasted time and energy, and is inefficient, is difficult to thoroughly clear away the dust totally, can contain the pollutant that exceeds standard usually in the dust of gathering and the carbon black, and the raise dust granule that artifical clearance in-process disturbance produced is very easily inhaled the lung by the workman, influences healthyly.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve above-mentioned problem and go on, aim at provides a prevent carbon deposit sleeve pipe, combustor and thermal desorption equipment for fuel burner.
The utility model provides a prevent carbon deposit sleeve pipe for fuel burner sets up on the burner port of combustor, a serial communication port, include: the sleeve cavity and an inner injection pipe and an outer injection pipe which are connected with the sleeve cavity; the sleeve cavity is sleeved on the periphery of the combustion port, and an air inlet interface for connecting a gas pipeline is arranged on the sleeve cavity; the inner blowing pipe is positioned inside the combustion port and communicated with the inside of the sleeve cavity; the outer blowing pipe is positioned on the outer side of the combustion port and communicated with the interior of the sleeve cavity; the extension direction of the outer blowing pipe is parallel to the axial direction of the combustion port, and the extension direction of the inner blowing pipe is parallel to the extension direction of the outer blowing pipe.
The utility model provides an in the anti-carbon deposit sleeve pipe for fuel burner, can also have such characteristic: the tail end of the outer injection pipe is located between the port position of the combustion port and the position of the baffle, and the tail end of the inner injection pipe corresponds to the tail end of the outer injection pipe.
The utility model provides an in the anti-carbon deposit sleeve pipe for fuel burner, can also have such characteristic: wherein, the number of the inner blowing pipes is two, and the two inner blowing pipes are arranged inside the combustion port in a vertical symmetry manner relative to the axial lead of the combustion port.
The utility model provides an in the anti-carbon deposit sleeve pipe for fuel burner, can also have such characteristic: the number of the outer blowing pipes is four, and the four outer blowing pipes are uniformly distributed in an annular array relative to the axial lead of the combustion port.
The utility model provides an in the anti-carbon deposit sleeve pipe for fuel burner, can also have such characteristic: the sleeve cavity is a C-shaped annular cavity, the head end and the tail end of the C-shaped annular cavity are not connected, and the air inlet interface is arranged at the head end; the arc length interval size between the head end and the tail end of the sleeve cavity is smaller than one fourth of the perimeter size of the outer wall of the combustion port.
The utility model provides an in the anti-carbon deposit sleeve pipe for fuel burner, can also have such characteristic: wherein, the sleeve cavity, the inner injection tube, the outer injection tube and the air inlet interface are welded into an integral structure.
The utility model also provides a combustor, including the burner port, its characterized in that: the burner port is provided with a carbon deposition prevention sleeve; a baffle is arranged on the periphery of the combustion port, a first through hole matched with an external injection pipe is formed in the baffle, and the external injection pipe penetrates through the first through hole and extends towards the port direction of the combustion port; the pipe wall of the combustion port is provided with a second through hole matched with the inner injection pipe, the inner injection pipe penetrates through the second through hole to stretch into the interior of the combustion port and extends towards the port direction of the combustion port, and the carbon deposition preventing sleeve is the carbon deposition preventing sleeve for the fuel oil combustor.
The utility model also provides a thermal desorption equipment, a serial communication port, include: the device comprises a thermal desorption reactor, a burner, a gas transmission pipeline, an air compressor and an oil burner, wherein a burner port of the burner is arranged at the interface position of the thermal desorption reactor; the air compressor is connected with an air inlet interface on the carbon deposition prevention sleeve of the combustor through a gas transmission pipeline.
The utility model has the advantages that:
the utility model discloses a prevent carbon deposit bushing air compressor machine for fuel burner through the pulse air current that the air compressor machine produced, via spout outside blowpipe, interior blowpipe blowout, can realize automatic carbon deposit and deposition on the burner port of clearance combustor, and this clearance process is high-efficient, and labour saving and time saving need not the shut down, has avoided traditional mode of shutting down production and manual cleaning. The utility model discloses a thermal desorption equipment can realize regularly clearing up long-pending charcoal and deposition on the combustor burner, guarantees that long-pending charcoal thickness keeps in the controllable within range that does not influence production on the combustor, improves the combustion efficiency of combustor, and the energy saving guarantees output and time limit for a project.
Drawings
Fig. 1 is a schematic structural diagram of a thermal desorption apparatus in an embodiment of the present invention;
FIG. 2 is a schematic structural view (cross-sectional view) of a carbon deposition preventing sleeve and a burner port for a fuel burner according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram (left side view) of a carbon deposition preventing sleeve for a fuel burner according to an embodiment of the present invention.
Reference numerals: the device comprises a thermal desorption reactor 1, a combustor 2, a gas transmission pipeline 3, an air compressor 4, a thermal desorption reactor support frame 5, a combustor support frame 6, a ground 7, a combustion port 21, a baffle 211, a carbon deposition prevention sleeve 22, a sleeve cavity 221, an air inlet interface 222, an outer injection blow pipe 223, an inner injection blow pipe 224, a first through hole opening position a and a second through hole opening position b.
Detailed Description
In order to make the utility model realize that technical means, creation characteristics, achievement purpose and efficiency are easily understood and known, the following embodiment combines the accompanying drawings to be right the utility model discloses a prevent carbon deposit sleeve pipe, combustor and thermal desorption equipment for fuel oil burner do specifically describe.
< example >
As shown in fig. 1, the present embodiment provides a thermal desorption apparatus including: thermal desorption reactor 1, combustor 2, gas transmission pipeline 3, air compressor machine 4. The thermal desorption reactor 1 is a thermal desorption kiln commonly used in the art, such as a rotary kiln. The thermal desorption reactor 1 is arranged on a thermal desorption reactor support frame 5, and the combustor 2 is arranged on a combustor support frame 6. The burner port 21 of the burner 2 is installed at a corresponding interface position of the thermal desorption reactor 1. The burner port 21 of the burner 2 is provided with a carbon deposition prevention sleeve 22, and the air compressor 4 is connected with the carbon deposition prevention sleeve 22 of the burner 2 through the air transmission pipeline 3.
As shown in fig. 2 and 3, the burner port 21 of the burner 2 is cylindrical, and the left end portion as shown in fig. 2 is a port of the burner port, i.e., a port for connecting the thermal desorption reactor 1. The periphery middle part department of burner port 21 is provided with baffle 211, is provided with the bolt hole (not shown in the figure) on the baffle 211, and after the left side tip of burner port 21 inserted the interface of thermal desorption reactor 1, baffle 211 passed through bolted connection with the outer wall of burning thermal desorption reactor 1 fixedly, has realized combustor 2 like this and has burnt the erection joint of thermal desorption reactor 1.
As shown in fig. 2 and 3, the carbon deposition prevention sleeve 22 includes a sleeve cavity 221, and an air inlet port 222, an inner injection tube 224, and an outer injection tube 223 connected to the sleeve cavity 221. The inner and outer injection pipes 224 and 223 are made of a refractory steel material. The sleeve cavity 221, the air inlet interface 222, the inner injection tube 224 and the outer injection tube 223 are welded into a whole structure.
The casing cavity 221 is a C-shaped annular cavity, the head end and the tail end of the C-shaped annular cavity are not connected, as shown in fig. 3, and the air inlet 222 is disposed at the head end of the C-shaped annular cavity. The arc length interval size (the arc length L shown in figure 3) between the head end and the tail end of the C-shaped annular cavity body is less than one fourth of the perimeter size of the outer wall of the combustion port 21. As shown in fig. 2, the casing cavity 221 is disposed around the periphery of the combustion port 21 and on the right side of the baffle 211. Air inlet 222 is arranged on the right side of casing cavity 221, air inlet 222 is used for connecting gas transmission pipeline 3, air inlet 222 is the interface matched with gas transmission pipeline 3, air inlet 222 and gas transmission pipeline 3 are detachably connected so as to be convenient for overhaul and replacement of the gas transmission pipeline, and in actual conditions, the air inlet 222 and the gas transmission pipeline can be detachably connected through conventional interface connection modes such as threaded connection. The gas transmission pipeline 3 adopts a plastic hose or a metal coil pipe, the other end of the gas transmission pipeline 3 is connected with a gas outlet interface of the air compressor 4, the air compressor 4 is used for providing high-pressure gas flow, and the high pressure gas is transmitted into the sleeve cavity 221 through the gas transmission pipeline 3.
As shown in fig. 3, the number of the inner blowing pipes 224 is two, and the two inner blowing pipes 224 are disposed vertically symmetrically with respect to the axial center line of the burner port 21. The number of the outer blowing pipes 223 is four, and the four outer blowing pipes 223 are uniformly distributed in an annular array around the axial line of the burner port 21. As shown in fig. 2 and 3, the outer injection pipe 223 is located outside the combustion port 21 and communicates with the inside of the jacket cavity 221. The baffle 211 is provided with a first through hole matched with the outer injection pipe 223, the outer injection pipe 223 passes through the first through hole and extends towards the port (left end) of the combustion port 21, and the opening position of the first through hole on the baffle is shown as a in fig. 2. The outer injection lance pipe 223 extends in a direction parallel to the axial direction of the combustion port 21 and abuts against the outer wall of the combustion port 21, and the tip (left-hand end as viewed in fig. 2) position of the outer injection lance pipe 223 is located between the port position of the combustion port 21 and the blind position. The inner blowing pipe 224 is located inside the combustion port 21 and communicates with the inside of the casing chamber 221. The wall of the combustion port 21 is provided with a second through hole matched with the inner blowing pipe 224, and the position of the second through hole on the wall of the combustion port is shown as b in fig. 2. The inner blowing pipe 224 penetrates the second through hole to extend into the combustion port 21 and extends toward the port of the combustion port 21, the extending direction of the inner blowing pipe 224 is parallel to the extending direction of the outer blowing pipe 223, and the inner blowing pipe 224 abuts against the outer wall of the combustion port 21. The position of the tip (left-hand terminal end as viewed in fig. 2) of the inner blow tube 224 corresponds to the position of the tip of the outer blow tube 223.
The operation of the carbon deposition preventing sleeve 22 for the fuel burner in this embodiment is as follows:
when carbon deposition prevention cleaning is needed, the air compressor 4 is turned on, high-pressure pulse airflow provided by the air compressor 4 quickly enters the sleeve cavity 221 of the carbon deposition prevention sleeve 22 through the air transmission pipeline 3 (at the moment, the airflow is shown by a hollow arrow in fig. 2), then enters the outer injection pipe 223 and the inner injection pipe 224, and the airflow entering the inner injection pipe 224 (shown by a black dotted arrow in fig. 2) quickly blows towards the inner wall of the port position of the combustion port 21 of the combustor to blow off dust on the inner wall, so that dust accumulation is prevented; the air flow (shown by a solid black arrow in fig. 2) entering the external blowing pipe 223 is rapidly blown to the outer wall of the port position of the burner port 21 of the burner, and the dust on the outer wall is blown off to prevent the dust from being accumulated.
< application case >
Will the utility model provides a prevent that carbon deposit sleeve pipe for fuel burner is applied to certain contaminated soil thermal desorption project. Two sets of direct rotary kilns with the same specification and the yield of 10t/h are installed on site, and diesel oil is used as an energy source. One of the direct rotary kilns is connected with the burner in the embodiment, and works by adopting the carbon deposition prevention sleeve, the air compressor and the gas transmission pipeline of the embodiment, and the whole set of thermal desorption equipment which is formed is numbered as equipment A. The other direct rotary kiln adopts a common burner in the prior art to work, and the whole set of the formed thermal desorption equipment is numbered as equipment B.
The texture of the contaminated soil adopted by the thermal desorption project species of the contaminated soil is shown in the following table 1:
TABLE 1 thermal desorption of soil particle composition
| Index (I) | Clay (%) | Powder (%) | Sand (%) |
| Numerical value | 13.4 | 54.1 | 32.5 |
Before the polluted soil enters the direct rotary kiln, the pretreatment such as synchronous screening and crushing, water content adjustment and the like is carried out under the same condition, the soil treatment by the two sets of equipment is carried out by the same batch of dredging and pretreatment, and the experimental conditions are kept consistent. After the pretreatment is finished, two batches of soil are respectively added into two direct rotary kilns.
In the equipment A, the carbon deposition and the dust deposition on the combustor are cleaned by operating the air compressor every 4h and using the carbon deposition prevention sleeve. In the apparatus B, the carbon deposit and the dust deposit on the burner are not cleaned. In the experimental process, the air supply quantity, the combustion-supporting air quantity, the material retention time, the overhaul time and other working conditions of the burners of the two groups of equipment are kept completely consistent.
The experimental determination indexes are the temperature near the burner in the kiln body, the flue gas temperature and the average thickness of carbon deposition of the burner. The temperature near the combustor and the flue gas temperature are detected by detection equipment in real time, and the average value is calculated every week; the thickness of the carbon deposit on the burner is measured after the project is finished and the burner is manually disassembled for 28d, and the experimental data are shown in the following tables 2 and 3:
TABLE 2 Experimental monitoring data for device A
TABLE 3 Experimental monitoring data for device B
From table 2 and table 3, adopted the utility model discloses a combustor and carbon deposit prevention sheathed tube equipment A, near combustor temperature and flue gas temperature all are higher than equipment B, and concrete data show: 28d, the temperature near the burner of apparatus a is about 1.3% higher than the temperature near the burner of apparatus B; the flue gas temperature of unit a was about 1.7% higher than the flue gas temperature of unit B. In addition, in the construction work period of 28d, the thickness of black ash of the combustor of the equipment A is obviously lower than that of the combustor of the equipment B due to the pulse ash removal function of the combustor of the equipment A, and specific data show that: the burner black ash thickness of device B was 15.5 times the black ash thickness of device a. Therefore, the utility model discloses a prevent that carbon deposit sleeve pipe for fuel oil burner can show black ash and gather on reducing the combustor, improves thermal desorption equipment combustor combustion efficiency.
The above embodiments are only preferred embodiments of the present invention, and are 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 shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a prevent carbon deposit sleeve pipe for fuel burner sets up on the burner port of combustor which characterized in that includes:
the device comprises a sleeve cavity, and an inner injection pipe and an outer injection pipe which are connected with the sleeve cavity;
the sleeve cavity is sleeved on the periphery of the combustion port, and an air inlet interface for connecting a gas transmission pipeline is arranged on the sleeve cavity;
the inner blowing pipe is positioned inside the combustion port and communicated with the inside of the sleeve cavity;
the outer blowing pipe is positioned on the outer side of the combustion port and communicated with the interior of the sleeve cavity;
the extension direction of the outer blowing pipe is parallel to the axial direction of the combustion port, and the extension direction of the inner blowing pipe is parallel to the extension direction of the outer blowing pipe.
2. The carbon deposition preventing sleeve for a fuel burner as set forth in claim 1, wherein:
wherein the tail end position of the external blowing pipe is positioned between the port position of the combustion port and the position of the baffle plate,
the tail end position of the inner blowing pipe corresponds to the tail end position of the outer blowing pipe.
3. The carbon deposition preventing sleeve for a fuel burner as set forth in claim 2, wherein:
the number of the inner injection pipes is two, and the two inner injection pipes are arranged in the combustion port in an up-down symmetrical mode relative to the axial line of the combustion port.
4. The carbon deposition preventing sleeve for a fuel burner as set forth in claim 2, wherein:
the number of the outer injection pipes is four, and the four outer injection pipes are uniformly distributed in an annular array relative to the axial lead of the combustion port.
5. The carbon deposition preventing sleeve for a fuel burner as set forth in claim 1, wherein:
the sleeve cavity is a C-shaped annular cavity, the head end and the tail end of the C-shaped annular cavity are not connected, and the air inlet interface is arranged at the head end;
the arc length interval size between the head end and the tail end of the sleeve cavity is smaller than one fourth of the perimeter size of the outer wall of the combustion port.
6. The carbon deposition preventing sleeve for a fuel burner as set forth in claim 1, wherein:
the sleeve cavity, the inner injection pipe, the outer injection pipe and the air inlet interface are of an integrated structure formed by welding.
7. A burner, comprising a burner port, characterized in that:
the burner port is provided with a carbon deposition prevention sleeve;
a baffle is arranged on the periphery of the combustion port, a first through hole matched with an external blowing pipe is formed in the baffle, and the external blowing pipe penetrates through the first through hole and extends towards the port direction of the combustion port;
a second through hole matched with the inner blowing pipe is arranged on the pipe wall of the combustion port, the inner blowing pipe penetrates through the second through hole to extend into the combustion port and extends towards the port direction of the combustion port,
the carbon deposition prevention sleeve is the carbon deposition prevention sleeve for the fuel oil burner, as claimed in any one of claims 1 to 6.
8. A thermal desorption apparatus, comprising: a thermal desorption reactor, a burner, a gas transmission pipeline and an air compressor,
the burner is the burner of claim 7,
a combustion port of the combustor is arranged at the interface position of the thermal desorption reactor;
the air compressor is connected with an air inlet interface on the carbon deposition prevention sleeve of the combustor through the air transmission pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021082745.4U CN212760318U (en) | 2020-06-12 | 2020-06-12 | Carbon deposition prevention sleeve for fuel oil burner, burner and thermal desorption equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021082745.4U CN212760318U (en) | 2020-06-12 | 2020-06-12 | Carbon deposition prevention sleeve for fuel oil burner, burner and thermal desorption equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212760318U true CN212760318U (en) | 2021-03-23 |
Family
ID=75071900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021082745.4U Expired - Fee Related CN212760318U (en) | 2020-06-12 | 2020-06-12 | Carbon deposition prevention sleeve for fuel oil burner, burner and thermal desorption equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212760318U (en) |
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2020
- 2020-06-12 CN CN202021082745.4U patent/CN212760318U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210323 |