CN215725163U - Calcium carbide furnace tail gas purification system - Google Patents
Calcium carbide furnace tail gas purification system Download PDFInfo
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- CN215725163U CN215725163U CN202120631293.9U CN202120631293U CN215725163U CN 215725163 U CN215725163 U CN 215725163U CN 202120631293 U CN202120631293 U CN 202120631293U CN 215725163 U CN215725163 U CN 215725163U
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Abstract
The utility model discloses a calcium carbide furnace tail gas purification system, which comprises a calcium carbide furnace, a first fan, a second fan, a settler group, a cloth bag bin group and a controller, wherein the first fan is connected with the first fan; the precipitator group and the cloth bag bin group are respectively provided with an air inlet, an air outlet and an ash outlet, the air inlet of the precipitator group is communicated with the tail gas outlet of the calcium carbide furnace, and a second electric control valve is arranged at the communication position of the two, the air outlet of the settler group is communicated with the air inlet of the first fan, the air outlet of the first fan is communicated with the air inlet of the cloth bag bin group, a first electric control valve is arranged at the communication position, the air outlet of the cloth bag bin group is communicated with the air inlet of the second fan, the calcium carbide furnace is internally provided with a pressure sensor, and the pressure sensor, the first fan, the first electric control valve and the second fan are all electrically connected with the controller, so that the dust removal rate in tail gas is high, wherein, the second automatically controlled valve is in normally open state to make the stable regulation of stove pressure ability in the carbide stove, thereby make its security high.
Description
Technical Field
The utility model belongs to the field of chemical industry, and particularly relates to a calcium carbide furnace tail gas purification system.
Background
At present, calcium carbide furnace tail gas clean system adjusts calcium carbide furnace pressure and relies on PLC program PID or converter's PID function to go on more, but to because of raw materials moisture content too much, when improper process operation or raw and other materials quality do not reach standard and lead to frequent collapse, calcium carbide furnace clean system uses PID automatically regulated, furnace pressure governing speed is slow, the converter reports easily and overflows or direct current bus overvoltage fault, can lead to calcium carbide furnace pressure out of control, thereby influence equipment safety and personal safety, this kind of automatically regulated furnace pressure method effect is poor, can not realize the automatic control, basically only can pass through manual operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a calcium carbide furnace tail gas purification system which is convenient to control and can stably adjust the furnace pressure in a calcium carbide furnace.
In order to achieve the purpose, the technical scheme of the utility model is as follows: a calcium carbide furnace tail gas purification system comprises a calcium carbide furnace, a first fan, a second fan, a settler group, a cloth bag bin group and a controller; the calcium carbide furnace comprises a precipitator group, a cloth bag bin group, a first fan, a second fan, a controller and a pressure sensor, wherein the precipitator group and the cloth bag bin group are respectively provided with an air inlet, an air outlet and an ash outlet, the air inlet of the precipitator group is communicated with a tail gas outlet of the calcium carbide furnace, a second electric control valve is arranged at the communication position of the precipitator group and the cloth bag bin group, the air outlet of the precipitator group is communicated with the air inlet of the first fan, the air outlet of the first fan is communicated with the air inlet of the cloth bag bin group, the first electric control valve is arranged in the calcium carbide furnace, and the pressure sensor, the first fan, the first electric control valve and the second fan are electrically connected with the controller.
The beneficial effects of the above technical scheme are that: so make the clearance of dust in its tail gas high, wherein, the second automatically controlled valve is in normally open state, and the accessible controller comes the aperture of regulating and control first automatically controlled valve and the rotational speed of controlling first fan and second fan according to the furnace pressure in the carbide stove simultaneously to make the furnace pressure in the carbide stove can stable regulation, thereby make its security high.
In the technical scheme, the settler group includes a plurality of settlers, and a plurality of the settler sets up along the fore-and-aft direction in proper order, the settler has air inlet, gas outlet and ash outlet, and is located the place ahead the settler gas outlet with tightly be located its rear the air inlet intercommunication of settler is located the place ahead the air inlet of settler constitutes the air inlet of settler group is located the place ahead the gas outlet of settler constitutes the gas outlet of settler group, and is a plurality of the ash outlet of settler constitutes jointly the ash outlet of settler group.
The beneficial effects of the above technical scheme are that: therefore, the dust in the tail gas can be subjected to multistage sedimentation through a plurality of settlers, and the sedimentation rate is high.
In the technical scheme, the cloth bag bin group comprises a plurality of cloth bag bins, each cloth bag bin is provided with an air inlet, an air outlet and an ash outlet, the air inlets of the cloth bag bins are converged to form the air inlet of the cloth bag bin group, the air outlets of the cloth bag bins are converged to form the air outlet of the cloth bag bin group, and the ash outlets of the cloth bag bins are converged to form the ash outlet of the cloth bag bin group.
The beneficial effects of the above technical scheme are that: so can clear away by the remaining dust in a plurality of sack storehouses simultaneously to the exhaust tail gas of settler group for the dust rate in the tail gas of final exhaust reaches emission standard.
In the above technical scheme, the first fan and the second fan are both variable frequency fans which are both provided with frequency converters, and the frequency converters are electrically connected with brake resistors.
The beneficial effects of the above technical scheme are that: so make the rotational speed of first fan and second fan can carry out convenient adjustment by the controller, usable braking resistance avoids the converter to report and overflows or direct current bus overvoltage fault simultaneously, wherein, the rotational speed of first fan and second fan keeps relative synchronization, so makes carbide stove furnace pressure adjust conveniently.
The technical scheme includes that the ash storage bin is provided with an ash inlet and an ash outlet, the ash outlet of the settler group and the ash outlet of the cloth bag bin group are both located above a conveying channel of the belt conveyor, the belt conveyor is used for collecting ash discharged by the settler group and the cloth bag bin group and conveying the ash to the ash inlet of the ash storage bin, and a valve is arranged at the ash outlet of the ash storage bin.
The beneficial effects of the above technical scheme are that: therefore, the dust separated from the tail gas of the calcium carbide furnace can be collected and treated in a centralized manner.
The technical scheme further comprises an emptying chimney, and an air inlet of the emptying chimney is communicated with an air outlet of the second fan.
The beneficial effects of the above technical scheme are that: therefore, the exhaust gas after dust removal can be ignited at high altitude and discharged harmlessly by using the emptying chimney.
Drawings
FIG. 1 is a schematic view of a tail gas purification system for a calcium carbide furnace according to an embodiment of the present invention;
fig. 2 is a flow chart of furnace pressure adjustment of the calcium carbide furnace tail gas purification system according to the embodiment of the utility model.
In the figure: 1 calcium carbide furnace, 11 second electric control valves, 2 first fans, 3 first electric control valves, 4 second fans, 5 settlers, 6 cloth bag bins, 7 belt conveyors, 8 ash storage bins and 9 emptying chimneys.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1, the embodiment provides a calcium carbide furnace tail gas purification system, which includes a calcium carbide furnace 1, a first fan 2, a second fan 4, a settler group, a cloth bag bin group and a controller; the precipitator group and the cloth bag bin group are respectively provided with an air inlet, an air outlet and an ash outlet, the air inlet of the precipitator group is communicated with the tail gas outlet of the calcium carbide furnace 1, the communication position of the precipitator group and the cloth bag bin group is provided with a second electric control valve 11, the air outlet of the precipitator group is communicated with the air inlet of the first fan 2, the air outlet of the first fan 2 is communicated with the air inlet of the cloth bag bin group, the communication position of the precipitator group and the cloth bag bin group is provided with a first electric control valve 3, the air outlet of the cloth bag bin group is communicated with the air inlet of the second fan 4, the calcium carbide furnace 1 is internally provided with a pressure sensor, the first fan 2, the first electric control valve 3 and the second fan 4 are all electrically connected with the controller, so that the cleaning rate of dust in tail gas is high, wherein the second electric control valve is in a normally open state, and the opening of the first electric control valve and the rotating speed of the first fan and the second fan can be adjusted and controlled by the controller according to the furnace pressure in the calcium carbide furnace, therefore, the furnace pressure in the calcium carbide furnace can be stably adjusted, the safety of the calcium carbide furnace is high, the controller is preferably a PLC (programmable logic controller), and the pressure sensor is used for measuring the pressure in the calcium carbide furnace.
In the above technical scheme the settler group includes a plurality of settlers 5, and a plurality of the settler 5 sets gradually, the settler 5 has air inlet, gas outlet and ash outlet, and is located the place ahead 5 gas outlet of settler with tightly be located its rear the air inlet intercommunication of settler 5 is located the place ahead the air inlet of settler 5 constitutes the air inlet of settler group is located the place ahead the gas outlet of settler 5 constitutes the gas outlet of settler group is a plurality of the ash outlet of settler 5 constitutes jointly the ash outlet of settler group so that the dust accessible a plurality of settlers in the tail gas carry out multistage settlement, and its settlement rate is high.
In the technical scheme, the cloth bag bin group comprises a plurality of cloth bag bins 6, each cloth bag bin 6 is provided with an air inlet, an air outlet and an ash outlet, the air inlets of the cloth bag bins 6 are converged to form the air inlets of the cloth bag bin group, the air outlets of the cloth bag bins 6 are converged to form the air outlets of the cloth bag bin group, the ash outlets of the cloth bag bins 6 are converged to form the ash outlets of the cloth bag bin group, and therefore residual dust in the tail gas discharged by the settler group can be removed by the cloth bag bins simultaneously, and the dust rate in the tail gas finally discharged reaches the discharge standard.
In the technical scheme, the first fan 2 and the second fan 4 are frequency conversion fans which are provided with frequency converters, the frequency converters are electrically connected with brake resistors, so that the rotating speeds of the first fan and the second fan can be conveniently adjusted by a controller, and meanwhile, the frequency converters can be prevented from reporting over-current or over-voltage faults of direct current buses by the aid of the brake resistors, wherein the rotating speeds of the first fan and the second fan are kept in relative synchronization, so that the furnace pressure of the calcium carbide furnace is convenient to adjust.
Still include belt conveyor 7 and ash storage bin 8 among the above-mentioned technical scheme, ash storage bin 8 has into grey mouth and ash outlet, and the ash outlet of settler group and the ash outlet of sack storehouse group all are located belt conveyor 7 transfer passage's top, belt conveyor 7 is used for collecting the ash material of settler group and sack storehouse group exhaust, and carry to ash storage bin 8's feed inlet department, ash storage bin 8's ash outlet department is equipped with the valve, so can concentrate the collection with the dust that separates out from the carbide furnace tail gas and handle.
The technical scheme also comprises an emptying chimney 9, wherein an air inlet of the emptying chimney 9 is communicated with an air outlet of the second fan 4, so that the air-discharged chimney can be used for carrying out high-altitude ignition and harmless emission on the tail gas after dust removal.
As shown in fig. 2, in this embodiment, by adding an external brake resistor to the frequency converter, it is avoided that the frequency converter reports an overvoltage fault to the dc bus during the speed regulation process of the first fan, and the integral time parameter of the frequency converter is reset, so as to avoid that the frequency converter reports an overcurrent fault, in the normal production process, the reference opening of the first electronic control valve is set to be 20% to 25%, when the furnace pressure of the calcium carbide furnace exceeds 50Pa, the opening of the first electronic control valve is immediately increased, and when the furnace pressure of the calcium carbide furnace is lower than 10Pa, the opening of the first electronic control valve is controlled to be adjusted to about 20%, so as to realize the stable control of the furnace pressure of the calcium carbide furnace.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A calcium carbide furnace tail gas purification system is characterized by comprising a calcium carbide furnace (1), a first fan (2), a second fan (4), a settler group, a cloth bag bin group and a controller; the precipitator group and the cloth bag bin group are respectively provided with an air inlet, an air outlet and an ash outlet, the air inlet of the precipitator group is communicated with the tail gas outlet of the calcium carbide furnace (1), a second electric control valve (11) is arranged at the communication position of the precipitator group and the cloth bag bin group, the air outlet of the precipitator group is communicated with the air inlet of the first fan (2), the air outlet of the first fan (2) is communicated with the air inlet of the cloth bag bin group, a first electric control valve (3) is arranged at the communication position, the air outlet of the cloth bag bin group is communicated with the air inlet of the second fan (4), a pressure sensor is arranged in the calcium carbide furnace (1), and the pressure sensor, the first fan (2), the first electric control valve (3) and the second fan (4) are electrically connected with the controller; the first fan (2) and the second fan (4) are both variable frequency fans which are provided with frequency converters, and the frequency converters are electrically connected with brake resistors.
2. The calcium carbide furnace tail gas purification system of claim 1, wherein the settler group comprises a plurality of settlers (5), and a plurality of settlers (5) are sequentially arranged in the front-back direction, the settlers (5) have gas inlets, gas outlets and ash outlets, the gas outlets of the settlers (5) positioned in front are communicated with the gas inlets of the settlers (5) positioned behind the gas outlets, the gas inlets of the settlers (5) positioned in the frontmost direction form the gas inlets of the settler group, the gas outlets of the settlers (5) positioned in the rearmost direction form the gas outlets of the settler group, and the ash outlets of the settlers (5) form the ash outlets of the settler group.
3. The calcium carbide furnace tail gas purification system as claimed in claim 1, wherein the cloth bag bin group comprises a plurality of cloth bag bins (6), the cloth bag bins (6) are provided with gas inlets, gas outlets and ash outlets, the gas inlets of the cloth bag bins (6) are combined to form the gas inlets of the cloth bag bin group, the gas outlets of the cloth bag bins (6) are combined to form the gas outlets of the cloth bag bin group, and the ash outlets of the cloth bag bins (6) are combined to form the ash outlets of the cloth bag bin group.
4. The calcium carbide furnace tail gas purification system as claimed in any one of claims 1 to 3, further comprising a belt conveyor (7) and an ash storage bin (8), wherein the ash storage bin (8) is provided with an ash inlet and an ash outlet, the ash outlet of the settler group and the ash outlet of the cloth bag bin group are both positioned above the conveying channel of the belt conveyor (7), the belt conveyor (7) is used for collecting ash discharged from the settler group and the cloth bag bin group and conveying the ash to the inlet of the ash storage bin (8), and a valve is arranged at the ash outlet of the ash storage bin (8).
5. The calcium carbide furnace tail gas purification system as claimed in any one of claims 1 to 3, further comprising an exhaust chimney (9), wherein an air inlet of the exhaust chimney (9) is communicated with an air outlet of the second fan (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120631293.9U CN215725163U (en) | 2021-03-29 | 2021-03-29 | Calcium carbide furnace tail gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120631293.9U CN215725163U (en) | 2021-03-29 | 2021-03-29 | Calcium carbide furnace tail gas purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215725163U true CN215725163U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120631293.9U Active CN215725163U (en) | 2021-03-29 | 2021-03-29 | Calcium carbide furnace tail gas purification system |
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| CN (1) | CN215725163U (en) |
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2021
- 2021-03-29 CN CN202120631293.9U patent/CN215725163U/en active Active
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