CN213599845U - Air supply device of vertical bauxite calcining kiln - Google Patents
Air supply device of vertical bauxite calcining kiln Download PDFInfo
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- CN213599845U CN213599845U CN202021503171.3U CN202021503171U CN213599845U CN 213599845 U CN213599845 U CN 213599845U CN 202021503171 U CN202021503171 U CN 202021503171U CN 213599845 U CN213599845 U CN 213599845U
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- oxygen
- supply pipeline
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- calcining kiln
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Abstract
The utility model provides a vertical bauxite calcines air feeder of kiln, including fan, the trunk line of supplying gas, trunk line valve, calcine kiln, oxygen jar, oxygen supply pipeline, flow valve, flame detector, the control unit. The fan is connected with the main gas supply pipeline, a main pipeline valve is arranged on the main pipeline, the main pipeline extends forwards to be connected with an oxygen supply pipeline, the oxygen supply pipeline is also connected with an oxygen tank, and a flow valve is arranged in the middle of the oxygen supply pipeline; the flow valve is connected with the control unit, and the control unit controls the flow valve. The main gas supply pipeline is connected with the calcining kiln after passing through the sample feeding pipeline. The flame detector is distributed on one side of the calcining kiln and used for outputting a flame signal to the control unit. The air supply device of the vertical bauxite calcining kiln is used for supplying combustion-supporting gas to the vertical bauxite calcining kiln, has the advantages of high efficiency, energy conservation, convenient installation, easy control and low cost, and reduces the generation of nitrides in the combustion process.
Description
Technical Field
The utility model belongs to the technical field of bauxite calcining kiln, specificly belong to vertical bauxite calcining kiln and supply gas technical field.
Background
In the combustion process of the bauxite kiln, natural gas and combustion-supporting gas need to be supplied to a combustion system, the combustion-supporting gas is influenced by the atmosphere in the kiln, the combustion-supporting gas is reasonably supplied, and the two reasons are mainly as follows: firstly, in the bauxite calcining procedure, the feeding mostly adopts intermittent feeding, and the oxygen required by calcining fluctuates along with the feeding period, so that the oxygen required by the calcining procedure is not constant; secondly, the atmosphere in the calcining kiln changes, when the pressure in the calcining kiln is positive, the flame is lengthened, and the combustion heat loss is large; when negative pressure in the furnace is generated, flame is shortened, air enters through the furnace door, and fuel is wasted, so that reasonable combustion-supporting air supply is important for stable combustion and energy conservation of the furnace. The air supply technology of prior art bauxite calcining kiln is direct transport combustion air usually, does not control oxygen concentration, can't control combustion system, the utility model provides an air supply device of vertical bauxite calcining kiln through monitoring burning flame length, carries the signal to the control unit, and then control oxygen flow, reaches the purpose of control burning. The utility model discloses simple structure, easy implementation, energy-conservation to reduce the nitride and discharge.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air feeder of vertical bauxite calcining kiln to solve the problem that provides among the above-mentioned background art.
To the above-mentioned problem that exists among the air supply plant of current bauxite calcining kiln, the utility model discloses a following technical scheme: comprises a fan, a main gas supply pipeline, a main pipeline valve, a calcining kiln, an oxygen tank, an oxygen supply pipeline, a flow valve, a flame detector and a control unit. The fan is connected with the main gas supply pipeline, a main pipeline valve is arranged on the main pipeline, the main pipeline extends forwards to be connected with an oxygen supply pipeline, the oxygen supply pipeline is also connected with an oxygen tank, and a flow valve is arranged in the middle of the oxygen supply pipeline; the flow valve is connected with the control unit, and the control unit controls the flow valve. The main gas supply pipeline is connected with the calcining kiln after passing through the sample feeding pipeline. The flame detector is distributed on one side of the calcining kiln and used for outputting a flame signal to the control unit.
Furthermore, the oxygen tank has certain pressure, and the pressure in the tank is greater than the pressure of the air output by the fan in the main air supply pipeline.
By adopting the technical scheme, the oxygen flow valve can be controlled by detecting the length of the flame, so that the flame is controlled, and the purposes of energy conservation and emission reduction in the combustion process are achieved.
Furthermore, the pipe diameter of the main air supply pipeline is 1mm-1000mm, and a manual valve is arranged between the fan and the oxygen supply pipeline.
Through adopting above-mentioned technical scheme, can directly control the main pipeline flow of supplying gas to oxygen concentration in the control mist avoids air pressure too big to cause the oxygen backward flow.
Furthermore, the flame detectors are positioned at one side of the vertical bauxite calcining kiln and are linearly arranged, and the number of the flame detectors is 1-10.
By adopting the technical scheme, the monitoring of the length of the combustion flame can be realized, the flame signal is fed back to the control unit, and the condition that the flame cannot be monitored due to overlong or overlong flame is avoided.
Compared with the prior art, the air supply device of the vertical bauxite calcining kiln has the following beneficial effects:
1. the utility model discloses a flame detector feeds back flame signal to the control unit, and the control unit controls oxygen flow valve, has avoided the waste of fuel in the combustion process, and the addition of oxygen has also reduced the production of nitride, and the burning is stable.
2. The utility model discloses a set up manual valve between fan and the oxygen supply pipeline, fixed air flow mainly leans on oxygen flow control to control flame, simple structure, and is with low costs.
3. The utility model discloses flame detector is located vertical bauxite and forges burning furnace one side, is linear arrangement, has avoided flame overlength or the condition that can not monitor flame for the short time, has reduced the safety risk, has avoided harmful gas to produce.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure:
1. a fan; 2. a main pipeline valve; 3. a main gas supply pipeline; 4. an oxygen tube; 5. a flow valve; 6. an oxygen delivery pipeline; 7. a control unit; 8. a flame; 9. a flame detector; 10 calcining kiln.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, the device comprises a fan 1, a main air supply pipeline 3, a main pipeline valve 2, a calcining kiln 10, an oxygen tank 4, an oxygen supply pipeline 6, a flow valve 5, a flame detector 9 and a control unit 7. The fan 1 is connected with a main gas supply pipeline 3, a main pipeline valve 2 is arranged on the main gas supply pipeline 3, the main gas supply pipeline 3 extends forwards to be connected with an oxygen supply pipeline 6, the oxygen supply pipeline 6 is also connected with an oxygen tank 4, and a flow valve 5 is arranged in the middle of the oxygen supply pipeline 6; the flow valve 5 is connected with a control unit 7, and the control unit 7 controls the flow valve 5. The main gas supply pipeline 3 is connected with a calcining kiln 10 after passing through an oxygen supply pipeline 6. The flame detector 9 is connected with the control unit 7 and outputs a flame 8 signal to the control unit.
When the flame-retardant air conditioner is used, the valve 2 of the main pipeline is adjusted to a half flow position, the fan 1 and the control unit 7 are opened, and the flame length is set on the control unit 7; igniting the combustion system, starting to monitor the flame 8 by the flame monitor 9, and when the flame 8 is too long, sending an overlong signal to the control unit 7 by the flame monitor, and reducing the oxygen flow valve 5 by the control unit 7; when the flame 8 is too short, the flame detector 9 sends an over-short signal to the control unit 7, and the control unit 7 increases the oxygen flow valve 5 to enhance the combustion force. When oxygen is not required to be mixed into or the oxygen tank 4 is not required to be replaced, the valve 2 of the main pipeline is adjusted to the maximum, and combustion-supporting gas completely uses air. After the oxygen tank 4 is replaced, the main pipeline valve 2 is adjusted to the half flow position again.
Claims (4)
1. An air supply device of a vertical bauxite calcining kiln is characterized by comprising a fan (1), an air supply main pipeline (3), a main pipeline valve (2), a calcining kiln (10), an oxygen tank (4), an oxygen supply pipeline (6), a flow valve (5), a flame detector (9) and a control unit (7); the fan (1) is connected with the main gas supply pipeline (3), a main pipeline valve (2) is arranged on the main gas supply pipeline (3), the main gas supply pipeline (3) extends forwards to be connected with an oxygen supply pipeline (6), the oxygen supply pipeline (6) is also connected with an oxygen tank (4), and a flow valve (5) is arranged in the middle of the oxygen supply pipeline (6); the flow valve (5) is connected with the control unit (7), and the flow valve (5) is controlled by the control unit (7); the main gas supply pipeline (3) is connected with the calcining kiln (10) after passing through the oxygen supply pipeline (6); the flame detector (9) is connected with the control unit (7) and outputs a flame (8) signal to the control unit.
2. The air supply device of the vertical bauxite calcining kiln as claimed in claim 1, wherein the diameter of the main air supply pipeline (3) is 1mm-1000mm, and a manual main pipeline valve (2) is arranged between the fan (1) and the oxygen supply pipeline (6).
3. The air supply device for the vertical bauxite calcining kiln, according to claim 1, is characterized in that the flame detectors (9) are positioned at one side of the vertical bauxite calcining kiln (10) and are linearly arranged, and the number of the flame detectors is 1-10.
4. The air supply device of the vertical bauxite calcining kiln as claimed in claim 1, wherein: the oxygen tank (4) has a certain pressure, and the pressure in the tank is greater than the pressure of the air output by the fan (1) in the air supply main pipeline (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021503171.3U CN213599845U (en) | 2020-07-27 | 2020-07-27 | Air supply device of vertical bauxite calcining kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021503171.3U CN213599845U (en) | 2020-07-27 | 2020-07-27 | Air supply device of vertical bauxite calcining kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213599845U true CN213599845U (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021503171.3U Active CN213599845U (en) | 2020-07-27 | 2020-07-27 | Air supply device of vertical bauxite calcining kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213599845U (en) |
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2020
- 2020-07-27 CN CN202021503171.3U patent/CN213599845U/en active Active
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