CN212006730U

CN212006730U - Refining smelting furnace DCS control system

Info

Publication number: CN212006730U
Application number: CN201921343901.5U
Authority: CN
Inventors: 朱泽鑫; 朱锡勇; 林培钟
Original assignee: Guangdong New Environimental Protection Technologies Co ltd
Current assignee: Guangdong New Environimental Protection Technologies Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-11-24
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a concise smelting pot DCS control system has the outer furnace body of smelting furnace, combustor, the combustor is the annular, and the combustor inner wall is that the annular distributes has the gas mouth, oxygen mouth, air mouth, and the orientation of each gas mouth is clockwise or anticlockwise, makes the rotatory integration of various gases, and the combustor both ends are oil feed end and flame projecting end respectively, still disposes some firearms in the combustor, the pipeline that gas mouth, oxygen mouth and oil feed end are connected all disposes proportional valve, manometer and the flowmeter by DCS system control, and the air mouth passes through the pipe connection by the frequency conversion air-blower of DCS system control. The utility model discloses a DCS system and PID coordinated control synthesize the various burning raw materials quantity of allotment, and the various raw materials that will allot the proportion simultaneously fuse fast in the combustor, make it can form the best combustion state, can not only improve production efficiency, effectively reduce the energy consumption simultaneously, pollution abatement.

Description

Refining smelting furnace DCS control system

Technical Field

The utility model belongs to the technical field of the smelting equipment, especially, relate to a concise smelting pot DCS control system.

Background

The lead temperature, furnace temperature and combustion oil of the traditional lead bullion refining are manually measured and monitored, and the oil consumption and the air induction degree are adjusted according to actual variable operation, but in view of manual operation, the problems that the temperature exceeds the critical value and the energy is useless and power consumption is caused due to manual operation delay and timely adjustment are avoided. In addition, how to rapidly fuse diesel oil, coal gas, oxygen and combustion air in a combustor and rapidly form the needed fused substance for combustion in proportion is also one of the technical problems to be solved in the field.

Disclosure of Invention

In view of the not enough of above-mentioned prior art, the utility model aims at providing a concise smelting pot DCS control system controls the proportion fusion of various burning raw materials, adopts DCS and PID coordinated control, improves production efficiency, reaches energy saving and emission reduction's effect.

For solving the above technical problem, the utility model discloses the technical scheme who adopts is:

the utility model relates to a concise smelting pot DCS control system has the outer furnace body of smelting furnace, combustor, the combustor is the annular, and the combustor inner wall is that the annular distributes has the gas mouth, oxygen mouth, air mouth, and the orientation of each gas mouth is clockwise or anticlockwise, makes the rotatory integration of various gases, and the combustor both ends are oil feed end and flame projecting end respectively, still disposes some firearms in the combustor, the pipeline that gas mouth, oxygen mouth and oil feed end are connected all disposes proportional valve, manometer and the flowmeter by DCS system control, and the air mouth passes through the pipe connection by the frequency conversion air-blower of DCS system control.

The utility model discloses an oil feed end is a plurality of nozzle that are the annular and distribute, and the flame projecting end is the toper and passes outer furnace body and get into the smelting furnace.

The utility model discloses a dispose the agitator in the smelting furnace, and the agitator is driven by inverter motor, and the smelting furnace disposes plumbous temperature inductor, and outer furnace body disposes furnace temperature inductor, and inverter motor carries out PID automatic control with plumbous temperature inductor interlocking, and the proportional valve of oil feed end, gas port, oxygen gas port all carries out PID automatic control with furnace temperature inductor interlocking.

The utility model discloses a smelting furnace is equipped with exhaust duct, and exhaust duct passes outer furnace body, and exhaust duct disposes draught fan and the proportional valve by DCS system control, and this proportional valve carries out PID automatic control with lead temperature sensor interlocking.

The utility model discloses an oil feed end passes through the oil depot fuel feeding, and the oil depot disposes the oil pump.

The utility model discloses a DCS system has human-computer interface, and the DCS system is equipped with the alarm.

The utility model is introduced into the DCS system, through the field data acquisition, the remote control, the linkage with the PID, the temperature linkage oil pump, the proportional valve of each entering gas, the exhaust proportional valve and other cooperative operations, the comprehensive allocation of the consumption of various burning raw materials, and the formation of the image record; meanwhile, various raw materials in a well-prepared proportion are quickly fused in the combustor, so that the optimal combustion state can be formed, the production efficiency can be improved, and meanwhile, the energy consumption and the pollution are effectively reduced.

Description of the drawings:

fig. 1 is a schematic structural view relating to the present invention;

fig. 2 is a schematic structural view of a burner according to the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, a refining smelting furnace DCS control system, the DCS system has a human-computer interface, and the DCS system is equipped with an alarm, a smelting furnace 1 and an outer furnace body 2 controlled by the DCS system and including an alloy, a burner 3, a gas port 31, an oxygen port 32, and an air port 33 connected to a side wall of the burner 3, wherein gas, oxygen, and combustion air are mainly input, two ends of the burner 3 are respectively an oil inlet end 41 and a flame projecting end 42, and the burner 3 is further provided with an igniter 4, that is, after three kinds of gas are fused with diesel oil, the three kinds of gas are ignited by the igniter 4, and flame is directly projected from the flame projecting end 42 for smelting the smelting furnace 1.

Specifically, the smelting furnace 1 is provided with a lead temperature sensor 13, the outer furnace body 2 is provided with a furnace temperature sensor 21, the lead temperature and the furnace temperature can be displayed by a DCS system, the stirrer 11 is arranged in the smelting furnace 1 and driven by a variable frequency motor 12, the frequency is adjusted by the DCS system, and the operation conditions such as frequency, current, start and stop can be monitored. The variable frequency motor 12 and the lead temperature sensor 13 are interlocked to realize PID automatic control, and when the temperature is not reached, the variable frequency motor 12 cannot be started.

The pipelines connected with the gas port 31, the oxygen port 32 and the oil inlet end 41 are all provided with a proportional valve, a manometer and a flowmeter controlled by a DCS system, the pipeline of the gas port 31 is provided with an explosion-proof electric gas switch valve, and the air port 33 is provided with a proportional valve controlled by the DCS system, namely the proportional valve of the gas, the oxygen and the diesel can adjust the opening degree of 0-100% under the control of the DCS system, so that the proportion is automatically adjusted. The proportional valves of the oil inlet 41, the gas port 31, the oxygen port 32 and the air port 33 are interlocked with the furnace temperature sensor 21 to perform PID automatic control, that is, proportional adjustment is performed according to the furnace temperature. Preferably, the air port 33 is connected with a variable frequency blower 34 controlled by a DCS system through a pipeline, and the frequency is adjusted by the DCS system, so that the running conditions such as frequency, current, start and stop can be monitored.

The pressure of the diesel oil, the gas and the oxygen can display data in a DCS, and if the temperature is normal, the pressure is green; when alarming, the color is red. The diesel and oxygen flow rate display instantaneous flow rate and accumulated flow rate data, and have real-time curve and historical curve display.

The oil inlet end 41 supplies oil through the oil depot 6, the oil depot 6 is provided with an oil pump 61, and PID constant pressure control is carried out on the oil pump 61 by referring to the oil inlet pressure and the flow. The oil level of the oil depot 6 can be detected by an oil level sensor, a dynamic liquid level bar graph and data are displayed in a DCS (distributed control system), and the oil level is green when the oil level is normal; when alarming, the color is red. There is a real-time curve and a historical curve display.

The smelting furnace 1 is provided with an exhaust pipeline 5, the exhaust pipeline 5 penetrates through the outer furnace body 2, the exhaust pipeline 5 is provided with an induced draft fan 51 and a proportional valve which are controlled by a DCS system, the opening degree of the induced draft fan 51 and the proportional valve can be adjusted to be 0-100% in the DCS system, the proportional valve and the lead temperature sensor 13 are interlocked to realize PID automatic control, the exhaust volume is controlled through specific furnace temperature, and energy consumption control is optimized.

In addition, after the combustor 3 is ignited successfully, the DCS system can detect through the spectrograph, the test result of the spectrograph is transmitted to the computer through the data line, the test result is analyzed by the computer and then transmitted to the DCS system, and real-time data is displayed and has a real-time curve and a historical curve. And the dynamic flame diagram can be displayed on a human-computer interface and is not displayed when the flame is extinguished, and the variable-frequency blower 34 is gradually weakened after the flame is extinguished and is stopped after 10 minutes of delay.

The temperature of the lead liquid (the implemented smelting metal) in the smelting furnace 1 is used for achieving the interlocking control of the following devices, and the exhaust pipeline 5 of the flue gas, the variable frequency blower 34, the oil inlet 41 and the proportional valve of the oxygen port 32 are adjusted according to the requirements of the production process at each stage of the temperature of the lead liquid. According to the DCS system and the PID interlocking control, the purposes of saving energy and saving the production period are achieved, and meanwhile, the manual inspection times can be simplified.

In order to reduce the mixing time and the homogenization proportion of various gases and diesel oil in the combustor 3, as shown in fig. 2, the combustor 3 is annular, gas ports 31, oxygen ports 32 and air ports 33 are annularly distributed on the inner wall of the combustor 3, the gas ports are clockwise or counterclockwise, so that various gases are rotationally fused and circularly rotate in the combustor 3 in a longitudinal annular manner, various gases are rapidly homogenized in proportion, the oil inlet end 41 is provided with a plurality of oil injection ports which are annularly distributed, the injected diesel oil is directly fused into the rotating gas, the gas which is longitudinally annularly rotated is pushed to the ignition end 42, and after the igniter 4 is ignited, the gas and diesel oil mixture forms a flame which is rapidly injected from the ignition end 42.

Preferably, the flame end 42 is conical and passes through the outer body 2 into the furnace 1, so that the rotating mixture is intensively sprayed out with the best effect.

It is to be understood that the technical scope of the present invention is not limited to the content of the specification, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. A refining smelting furnace DCS control system is characterized in that: have smelting furnace (1), outer furnace body (2), combustor (3) are the annular, and combustor (3) inner wall is the annular and distributes and have gas mouth (31), oxygen gas mouth (32), air mouth (33), and the orientation of each gas mouth is clockwise or anticlockwise, and combustor (3) both ends are oil feed end (41) and flame projecting end (42) respectively, still dispose some firearm (4) in combustor (3), gas mouth (31), oxygen gas mouth (32) and the pipeline that oil feed end (41) are connected all dispose proportional valve, manometer and the flowmeter by DCS system control, and air mouth (33) are through frequency conversion air-blower (34) that the pipe connection is by DCS system control.

2. A refining furnace DCS control system according to claim 1, characterised in that: the oil inlet end (41) is a plurality of oil nozzles distributed in an annular shape, and the fire spraying end (42) is conical and penetrates through the outer furnace body (2) to enter the smelting furnace (1).

3. A refining furnace DCS control system according to claim 1 or 2, characterized in that: a stirrer (11) is arranged in the smelting furnace (1), the stirrer (11) is driven by a variable frequency motor (12), a lead temperature sensor (13) is arranged in the smelting furnace (1), a furnace temperature sensor (21) is arranged in the outer furnace body (2), the variable frequency motor (12) and the lead temperature sensor (13) are interlocked to realize PID automatic control, and proportional valves of an oil inlet end (41), a gas port (31) and an oxygen port (32) are interlocked with the furnace temperature sensor (21) to realize PID automatic control.

4. A refining furnace DCS control system according to claim 3, characterised in that: smelting furnace (1) is equipped with exhaust duct (5), and exhaust duct (5) pass outer furnace body (2), and exhaust duct (5) dispose draught fan (51) and proportional valve by DCS system control, and this proportional valve and plumbous temperature sensor (13) interlock implementation PID automatic control.

5. A refining furnace DCS control system according to claim 3, characterised in that: the oil inlet end (41) is supplied with oil through the oil depot (6), and the oil depot (6) is provided with an oil pump (61).

6. A refining furnace DCS control system according to claim 1, characterised in that: the DCS is provided with a human-computer interface and is provided with an alarm.