Double-C kiln channel blowback device for calcium carbide production
By designing a double C kiln channel backflash device for calcium carbide production, the real-time monitoring of channel pressure and backflash cleaning of the channel is achieved using combustion-assisted fans and backflash pipelines, the problem of easy blockage of the double C kiln channel is solved, ensuring safe and efficient production, and avoiding high-temperature red material overflow and related safety hazards.
Patent Information
- Application Number
- CN202420918234.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-04-29
AI Technical Summary
In the calcium carbide production system, the dual C kiln passages are prone to blockage, resulting in the need to shut down the kiln for manual cleaning, which is time-consuming and has safety hazards of high-temperature red material overflow, scald or fire.
A double C kiln channel backflash device for calcium carbide production is designed, including a combustion-assisted air main pipe, a backflash pipeline and a pneumatic valve. By remote control and real-time monitoring of channel pressure, the backflash cleaning is turned on to ensure that the lower ash is unobstructed.
The passage blockage is achieved without stopping the kiln, which avoids high-temperature red material overflow and related safety hazards, ensures that the pressure difference between the double C kiln is within the process control range, and uses backblowing air as combustion air to participate in the combustion in the kiln, without adversely affecting the combustion system.
Smart Images
Figure CN222849800U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of calcium carbide production equipment, in particular to a double C kiln channel back-blowing device for calcium carbide production. Background Art
[0002] Calcium carbide is obtained by high-temperature smelting of quicklime and dry coke as raw materials. Quicklime is obtained by high-temperature roasting of limestone in a lime kiln; dry coke is obtained by drying carbon materials in a dryer.
[0003] In general calcium carbide production systems, lime kilns use the coal gas produced by calcium carbide furnaces as fuel to perform high-temperature roasting of limestone. Double C kilns are the main equipment for producing quicklime. When the kiln is running and reversing, the airflow will bring white ash dust and particles into the channel. If the ash is not discharged smoothly, the channel will be blocked. Currently, it is cleared by manual knocking. If the blockage is serious, the kiln must be stopped to open the inspection hole for cleaning, which is time-consuming and after the inspection hole is opened, the high-temperature red material may overflow, causing burns or fire, posing a safety hazard to production. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a double C kiln channel back-blowing device for calcium carbide production, which solves the problem that if the blockage is serious, the kiln must be stopped to open the inspection hole for cleaning, which is time-consuming and after the inspection hole is opened, the high-temperature red material may overflow, causing burns or fire, and bringing safety hazards to production.
[0005] To achieve the above-mentioned purpose, the utility model proposes a double C kiln channel backblowing device for calcium carbide production, including a combustion-supporting blower, one end of which is fixedly connected to a combustion-supporting air main duct, the side wall of which is fixedly connected to a backblowing duct, and the outer side of which is fixedly connected to a pneumatic valve.
[0006] Preferably, one end of the combustion-supporting air main conduit away from the combustion-supporting blower is fixedly connected to chamber A, and chamber B is arranged on the outside of the combustion-supporting air main conduit, and the combustion-supporting air main conduit enters chambers A and B in parallel.
[0007] Preferably, a channel is fixedly connected to one side of the B chamber close to the A chamber, and the other end of the channel is fixedly connected to the A chamber.
[0008] Preferably, the combustion-supporting air main duct is arranged directly above the channel.
[0009] Preferably, a double C kiln ash falling pipe is fixedly connected to the side wall of the channel, and a lime silo is fixedly connected to the bottom of the double C kiln ash falling pipe.
[0010] Preferably, both ends of the backflush pipe are fixedly connected to the combustion air main pipe and the double C kiln ash falling pipe respectively.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The device is simple to set up, requires little investment, and can be remotely controlled. It can start back-blowing and cleaning in real time according to changes in channel pressure, ensuring smooth ash discharge and keeping the pressure difference of the double C kiln within the process control range. At the same time, it avoids unsafe factors caused by clearing and maintenance, and the air used for back-blowing can be used as combustion-supporting air to participate in the combustion in the kiln, without adverse effects on the combustion system of the double C kiln. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0014] Figure 2 It is a front view structural schematic diagram of the utility model.
[0015] In the figure: 1. Combustion-supporting fan; 2. Combustion-supporting air main pipeline; 3. A chamber; 4. B chamber; 5. Double C kiln ash falling pipeline; 6. Backflush pipeline; 7. Pneumatic valve; 8. Lime silo; 9. Passageway. DETAILED DESCRIPTION
[0016] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] like Figure 1-2 As shown, a double C kiln channel back-blowing device for producing calcium carbide is characterized in that it includes a combustion-supporting fan 1 for providing combustion-supporting air to increase the oxygen supply for the double C kiln combustion.
[0018] One end of the combustion-supporting fan 1 is fixedly connected to a combustion-supporting air main duct 2, which transports the combustion-supporting air provided by the combustion-supporting fan 1 to the double C kiln. The side wall of the combustion-supporting air main duct 2 is fixedly connected to a back-blowing duct 6. The outer side of the back-blowing duct 6 is fixedly connected to a pneumatic valve 7, which is fixedly connected to the outer side of the back-blowing duct 6 and is used to control the opening and closing and regulation of the airflow during the back-blowing process.
[0019] One end of the combustion-supporting air main pipeline 2 away from the combustion-supporting blower 1 is fixedly connected to the A chamber 3, which is located on the end of the combustion-supporting air main pipeline 2 extending to the outside of the B chamber 4 and plays the role of guiding and distributing the combustion-supporting air.
[0020] A B chamber 4 is provided on the outer side of the combustion-supporting air main pipeline 2 . The combustion-supporting air main pipeline 2 extends to the outer side of the B chamber 4 for receiving the combustion-supporting air and distributing it to corresponding channels 9 .
[0021] The combustion air main pipeline 2 penetrates the B chamber 4 and extends to the outside thereof, and the A chamber 3 is arranged on one end of the combustion air main pipeline 2 extending to the outside of the B chamber 4. A channel 9 is fixedly connected to one side of the B chamber 4 close to the A chamber 3, and the other end of the channel 9 is fixedly connected to the A chamber 3. The combustion air main pipeline 2 is arranged directly above the channel 9. The side wall of the channel 9 is fixedly connected to the double C kiln ash falling pipeline 5, and the bottom of the double C kiln ash falling pipeline 5 is fixedly connected to the lime silo 8. The bottom is fixedly connected to the double C kiln ash falling pipeline 5, and is used to collect and store the lime material generated during the calcination process of the double C kiln.
[0022] The two ends of the back-blowing pipeline 6 are respectively fixedly connected to the combustion air main pipeline 2 and the double C kiln ash falling pipeline 5.
[0023] Working principle: Double C kiln production process: A chamber 3 is calcined, and the flue gas is led out from B chamber 4 through channel 9; B chamber 4 is calcined, and the flue gas is led out from A chamber 3 through channel 9, which is called reversing. During the process, the flue gas pressure drives the lime dust and particles to flow in channel 9, and some lime and particles enter the lime silo 8 through the ash falling pipe 5. When the double C kiln is running, the pneumatic valve 7 is opened by 10% to maintain a certain airflow to cool the sinking materials in the double C kiln ash falling pipe 5 to prevent high-temperature board formation and blockage of channel 9. If the pressure difference of channel 9 has an upward trend, it means that the double C kiln ash falling pipe 5 is blocked to a certain extent. The opening of the pneumatic valve 7 is increased, and the backblowing force is strengthened to dredge channel 9. At the same time, the pneumatic valve 7 is closed. The whole process is adjusted by the central control worker according to the pressure change of channel 9.
[0024] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.
Claims
1. A double C kiln channel backflush device for calcium carbide production, characterized in that: It comprises a combustion-supporting fan (1), one end of the combustion-supporting fan (1) is fixedly connected to a combustion-supporting air main pipeline (2), a side wall of the combustion-supporting air main pipeline (2) is fixedly connected to a backflush pipeline (6), and the outer side of the backflush pipeline (6) is fixedly connected to a pneumatic valve (7); One end of the combustion-supporting air main pipeline (2) away from the combustion-supporting blower (1) is fixedly connected to the A chamber (3), a B chamber (4) is arranged outside the combustion-supporting air main pipeline (2), and the combustion-supporting air main pipeline (2) is connected to the A chamber (3) and the B chamber (4); A channel (9) is fixedly connected to one side of the B chamber (4) close to the A chamber (3), and the other end of the channel (9) is fixedly connected to the A chamber (3); The side wall of the channel (9) is fixedly connected to a double C kiln ash falling pipe (5), and the bottom of the double C kiln ash falling pipe (5) is fixedly connected to a lime silo (8); The two ends of the backflush pipe (6) are respectively fixedly connected to the combustion air main pipe (2) and the double C kiln ash falling pipe (5).
2. A double C kiln channel backflush device for calcium carbide production according to claim 1, characterized in that: The combustion-supporting air main pipeline (2) is arranged directly above the channel (9).