CN202058043U - Oxygen supply control system in smelting system - Google Patents
Oxygen supply control system in smelting system Download PDFInfo
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- CN202058043U CN202058043U CN2011200626144U CN201120062614U CN202058043U CN 202058043 U CN202058043 U CN 202058043U CN 2011200626144 U CN2011200626144 U CN 2011200626144U CN 201120062614 U CN201120062614 U CN 201120062614U CN 202058043 U CN202058043 U CN 202058043U
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Abstract
The utility model provides an oxygen supply control system in a smelting system, which comprises an ore concentrate quantity transducer, a coal quantity transducer, a fuel oil flow transducer, an oxygen flow transducer and an oxygen regulation controller. The oxygen regulation controller calculates the required flow value of oxygen according to the current flow values of ore concentrates, coal and fuel oil, and adjusts an oxygen regulating valve through an oxygen flow controller according to the required flow value and the current flow values to adjust oxygen supply. Since the oxygen supply control system form a double closed-loop ratio control system of three main flows and one auxiliary flow in the smelting system, the interference of oxygen supply flow can be overcome, the main flows and the auxiliary flow are kept more stable and the total load of a process system is also kept more stable. The oxygen supply control system can overcome the interference of the oxygen supply flow and can accurately calculate the flow value of required oxygen according to the current main flow values and the conditions of a smelting furnace, and therefore the total load of the process system is kept more stable and the temperature of the furnace can be indirectly adjusted.
Description
Technical field
The utility model relates to metallurgical technology field, the control system of oxygen supply in particularly a kind of smelting system.
Background technology
The oxygen top blown smelting process is modernized non-ferrous metal bath smelting technology, can be used for copper and lead etc. once and secondary smelting, and melting of copper nickel and copper converting.Because therefore advantages such as it has capital construction and operating cost is low, energy-conserving and environment-protective, raw material and fuel-flexible, dust are few have obtained to use widely at present.And temperature control is the central factor that the oxygen top blown furnaceman plants and controls.Stable furnace temperature all is most important for extending furnace lining life and service life of lance.At present, the principal element that influences furnace temperature comprises concentrate composition, blanking amount undulatory property, oxygen-rich concentration, heavy oil amount, coal-supplying amount etc.
In melting is produced,, shorten the life-span of stove and spray gun if the too high meeting of furnace temperature causes the interior refractory brick of stove to come off and the scaling loss of spray gun; If furnace temperature is low excessively, then reaction not exclusively causes loss of material, brings difficulty to subsequent handling simultaneously.Therefore in order to realize the thermodynamic equilibrium of top blow smelting reaction, the temperature control of top blast stove is the key of producing, yet because the complexity of material component and the fluctuation of going into the furnace charge amount, be not easy to realize, therefore being controlled to furnace temperature for present problem demanding prompt solution by single temperature control loop.It is not very accurate that yet batching demands such as present oxygen are calculated, thereby has aggravated the difficulty of Control for Kiln Temperature.
The utility model content
The purpose of this utility model is intended to solve above-mentioned technological deficiency at least, has proposed the control system of oxygen supply in a kind of smelting system.
For achieving the above object, the utility model proposes the control system of oxygen supply in a kind of smelting system on the one hand, comprising: concentrate material transmitter, and described concentrate material transmitter detects the present flow rate of concentrate, and generates the present flow rate value of concentrate; The coal charge transmitter, described coal charge transmitter detects the present flow rate of coal, and generates the present flow rate value of coal; The fuel flow transmitter, described fuel flow transmitter detects the present flow rate of fuel oil, and generates the present flow rate value of fuel oil; The oxygen flow transmitter, described oxygen flow transmitter detects the present flow rate of oxygen, and generates the present flow rate value of oxygen; The oxygen adjustment control, described oxygen adjustment control links to each other with the oxygen flow transmitter with described concentrate material transmitter, coal charge transmitter, fuel flow transmitter respectively, described oxygen adjustment control calculates the required flow value of oxygen according to the present flow rate value of described concentrate, coal and fuel oil, and oxygen regulating valve is adjusted to adjust oxygen supply by the oxygen flow controller according to the required flow value and the present flow rate value of described oxygen.
In an embodiment of the present utility model, described oxygen adjustment control calculates the required Oxygen Flow value of concentrate according to the present flow rate value and the oxygen material ratio of described concentrate, present flow rate value and oxygen coal ratio according to described coal calculate the required Oxygen Flow value of coal, calculate the required Oxygen Flow value of fuel oil with present flow rate value and oxygen oil ratio, and described concentrate required Oxygen Flow value, coal required Oxygen Flow value and the required Oxygen Flow value of fuel oil are sued for peace to obtain the required flow value of oxygen according to described fuel oil.Wherein, described oxygen oil ratio is a fixed value, and described oxygen material ratio and oxygen coal beguine are regulated according to the working of a furnace.
In an embodiment of the present utility model, described oxygen adjustment control comprises: summation module, Oxygen Flow value and the required Oxygen Flow value summation of fuel oil that described summation module is required to described concentrate required Oxygen Flow value, coal; Oxygen is regulated control module, and described oxygen is regulated control module and linked to each other with described summation module, oxygen regulating valve is adjusted to adjust oxygen supply by the oxygen flow controller according to the required flow value and the present flow rate value of described oxygen.
In an embodiment of the present utility model, also comprise: the concentrate adjustment control, described concentrate adjustment control links to each other with described concentrate material transmitter, the concentrate constant feeder is adjusted to adjust the flow of described concentrate by concentrate material amount controller according to the present flow rate value and the concentrate specified rate of described concentrate.
In an embodiment of the present utility model, also comprise: the coal adjustment control, described coal adjustment control links to each other with described coal charge transmitter, the coal constant feeder is adjusted to adjust the flow of described coal by the coal charge amount controller according to the present flow rate value and the coal specified rate of described coal.
In an embodiment of the present utility model, also comprise: the fuel oil adjustment control, described fuel oil adjustment control links to each other with described fuel flow transmitter, fuel regulator valve is adjusted to adjust the flow of described fuel oil by the fuel flow controller according to the present flow rate value and the fuel oil specified rate of described fuel oil.
The utility model has constituted three kinds of main flows in the smelting system and a kind of two closed loop ratios controls of secondary flow amount, therefore can overcome the interference of self flow, master and slave flow is all compared steadily, and makes that the total load of process system is also more stable.The utility model can overcome the interference of oxygen supply self flow, can be according to the flow value of current main-stream value and the required oxygen of working of a furnace accurate Calculation, thus making that the total duty ratio of process system is more steady, can adjust furnace temperature indirectly.
Aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the structural drawing of the control system of oxygen supply in the smelting system of an embodiment of the utility model;
Fig. 2 is the structural drawing of the control system of oxygen supply in the smelting system of another embodiment of the utility model.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the utility model, and can not be interpreted as restriction of the present utility model.
In the utility model the required total amount of oxygen of melting is analyzed, the required total amount of oxygen of melting mainly is made up of three parts, and is as shown in the table, is the classification and the algorithm of melting requisite oxygen tolerance.
| Classification | Computing method |
| The concentrate required oxygen that burns | The oxygen material that is obtained by " burdening calculation " multiply by dried concentrate feed rate than (dried concentrate per ton reacts needed oxygen). |
| The required oxygen of coal combustion | The oxygen coal that is obtained by " burdening calculation " multiply by damp coal feed rate than (the needed oxygen of damp coal combustion per ton). |
| The required oxygen of oil firing | Fixing oxygen oil ratio (every liter of needed oxygen of oil inflame) multiply by the fuel flow under the melting pattern |
As shown in Figure 1, be the structural drawing of the control system of oxygen supply in the smelting system of an embodiment of the utility model.This system comprises concentrate material transmitter 110, coal charge transmitter 120, fuel flow transmitter 130, oxygen flow transmitter 140 and oxygen adjustment control 150.Wherein, the present flow rate of 110 pairs of concentrate of concentrate material transmitter detects, and generates the present flow rate value of concentrate.The present flow rate of 120 pairs of coals of coal charge transmitter detects, and generates the present flow rate value of coal.The present flow rate of 130 pairs of fuel oils of fuel flow transmitter detects, and generates the present flow rate value of fuel oil.The present flow rate of 140 pairs of oxygen of oxygen flow transmitter detects, and generates the present flow rate value of oxygen.Need to prove that adopt transmitter that flow is measured in the utility model embodiment, those skilled in the art also can select other measuring elements to measure certainly, these all should be included within the protection domain of the present utility model.Oxygen adjustment control 150 links to each other with concentrate material transmitter 110, coal charge transmitter 120, fuel flow transmitter 130 and oxygen flow transmitter 140 respectively, oxygen adjustment control 150 calculates the required flow value of oxygen according to the present flow rate value of concentrate, coal and fuel oil, and oxygen regulating valve is adjusted to adjust oxygen supply by the oxygen flow controller according to the required flow value and the present flow rate value of oxygen.Particularly, oxygen adjustment control 150 calculates the required Oxygen Flow value of concentrate according to the present flow rate value and the oxygen material ratio of concentrate, present flow rate value and oxygen coal ratio according to coal calculate the required Oxygen Flow value of coal, calculate the required Oxygen Flow value of fuel oil with present flow rate value and oxygen oil ratio according to fuel oil, and to the required Oxygen Flow value summation of the required Oxygen Flow value of concentrate required Oxygen Flow value, coal and fuel oil to obtain the required flow value of oxygen, specifically can be with reference to last table.Wherein, preferably, the oxygen oil ratio is a fixed value, and oxygen material ratio and oxygen coal beguine are regulated according to the working of a furnace.
In an embodiment of the present utility model, oxygen adjustment control 150 comprises summation module 151 and oxygen adjusting control module 152.Required Oxygen Flow value and the required Oxygen Flow value summation of fuel oil of Oxygen Flow value, coal that 151 pairs of concentrate of summation module are required.Oxygen is regulated control module 152 and is linked to each other with summation module 151, oxygen regulating valve is adjusted to adjust oxygen supply by the oxygen flow controller according to the required flow value and the present flow rate value of oxygen.
In preferred embodiment of the present utility model, this system also comprises concentrate adjustment control 160, wherein, concentrate adjustment control 160 links to each other with concentrate material transmitter 110, the concentrate constant feeder is adjusted to adjust the flow of concentrate by concentrate material amount controller according to the present flow rate value and the concentrate specified rate of concentrate.
In preferred embodiment of the present utility model, this system also comprises coal adjustment control 170, coal adjustment control 170 links to each other with coal charge transmitter 120, the coal constant feeder is adjusted to adjust the flow of coal by the coal charge amount controller according to the present flow rate value and the coal specified rate of coal.
In preferred embodiment of the present utility model, this system also comprises fuel oil adjustment control 180, fuel oil adjustment control 180 links to each other with fuel flow transmitter 130, fuel regulator valve is adjusted to adjust the flow of fuel oil by the fuel flow controller according to the present flow rate value and the fuel oil specified rate of fuel oil.
As shown in Figure 2, be the structural drawing of the control system of oxygen supply in the smelting system of the utility model specific embodiment.In this embodiment, concentrate flow is called main flow 1, the coal flow is called main flow 2, and fuel flow is called main flow 3, oxygen flow is called the secondary flow amount.This system comprises concentrate material transmitter 210, concentrate material amount controller 220, concentrate constant feeder 230, concentrate feeding system 240, first comparison measurer 250, coal charge transmitter 310, coal charge amount controller 320, coal constant feeder 330, coal feeding system 340, second comparison measurer 350, oxygen flow transmitter 410, oxygen flow controller 420, oxygen regulating valve 430, oxygen supply pipe network 440, totalizer 450, fuel flow transmitter 510, fuel flow controller 520, fuel regulator valve 530, fuel feeding pipe network 540 and the 3rd comparison measurer 550.Wherein, the present flow rate of 210 pairs of concentrate of concentrate material transmitter detects, and generates the present flow rate value of concentrate.The present flow rate value and the concentrate specified rate of concentrate compare, comparative result is sent to concentrate material amount controller 220, concentrate material amount controller 220 is controlled concentrate constant feeder 230 according to comparative result, and concentrate constant feeder 230 control concentrate feeding systems 240 are to adjust concentrate flow.Simultaneously, concentrate material transmitter 210 sends to present flow rate value and the oxygen material ratio calculating concentrate required Oxygen Flow value of first comparison measurer, 250, the first comparison measurers 250 according to concentrate with the present flow rate of concentrate.The present flow rate of 310 pairs of coals of coal charge transmitter detects, and generates the present flow rate value of coal.Present flow rate value and coal specified rate to coal compare, comparative result is sent to coal charge amount controller 320, coal charge amount controller 320 is controlled coal constant feeder 330 according to comparative result, and coal constant feeder 330 control coal feeding systems 340 are to adjust the coal flow.Simultaneously, coal charge transmitter 310 sends to present flow rate value and the oxygen coal ratio calculating coal required Oxygen Flow value of second comparison measurer, 350, the second comparison measurers 350 according to coal with the present flow rate of coal.The present flow rate of 510 pairs of fuel oils of fuel flow transmitter detects, and generates the present flow rate value of fuel oil.Present flow rate value and fuel oil specified rate to fuel oil compare, comparative result is sent to fuel flow controller 520, fuel flow controller 520 is controlled fuel regulator valve 530 according to comparative result, and fuel regulator valve 530 control fuel feeding pipe networks 540 are to adjust fuel flow.Simultaneously, fuel flow transmitter 510 sends to present flow rate value and the oxygen oil ratio calculating fuel oil required Oxygen Flow value of the 3rd comparison measurer 550, the three comparison measurers 550 according to fuel oil with the present flow rate of fuel oil.Equally preferably, the oxygen oil ratio is a fixed value, and oxygen material ratio and oxygen coal beguine are regulated according to the working of a furnace.
The present flow rate of 410 pairs of oxygen of oxygen flow transmitter detects, and generates the present flow rate value of oxygen.Totalizer 450 links to each other with the 3rd comparison measurer 550 with first comparison measurer 250, second comparison measurer 350 respectively, and required required Oxygen Flow value and the required Oxygen Flow value of fuel oil of Oxygen Flow value, coal of 450 pairs of concentrate of totalizer sued for peace to obtain the required flow value of oxygen.The present flow rate value of oxygen and the required flow value of oxygen are compared, comparative result is sent to oxygen flow controller 420, oxygen flow controller 420 is controlled oxygen regulating valve 430 according to comparative result, and oxygen regulating valve 430 control oxygen supply pipe networks 440 are to adjust oxygen flow.
The utility model has constituted three kinds of main flows in the smelting system and a kind of two closed loop ratios controls of secondary flow amount, therefore can overcome the interference of self flow, master and slave flow is all compared steadily, and makes that the total load of process system is also more stable.The utility model can overcome the interference of oxygen supply self flow, can be according to the flow value of current main-stream value and the required oxygen of working of a furnace accurate Calculation, thus making that the total duty ratio of process system is more steady, can adjust furnace temperature indirectly.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that under the situation that does not break away from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present utility model is by claims and be equal to and limit to these embodiment.
Claims (5)
1. the control system of oxygen supply in the smelting system is characterized in that, comprising:
Concentrate material transmitter, described concentrate material transmitter detects the present flow rate of concentrate, and generates the present flow rate value of concentrate;
The coal charge transmitter, described coal charge transmitter detects the present flow rate of coal, and generates the present flow rate value of coal;
The fuel flow transmitter, described fuel flow transmitter detects the present flow rate of fuel oil, and generates the present flow rate value of fuel oil;
The oxygen flow transmitter, described oxygen flow transmitter detects the present flow rate of oxygen, and generates the present flow rate value of oxygen;
The oxygen adjustment control, described oxygen adjustment control links to each other with the oxygen flow transmitter with described concentrate material transmitter, coal charge transmitter, fuel flow transmitter respectively, described oxygen adjustment control calculates the required flow value of oxygen according to the present flow rate value of described concentrate, coal and fuel oil, and oxygen regulating valve is adjusted to adjust oxygen supply by the oxygen flow controller according to the required flow value and the present flow rate value of described oxygen.
2. the control system of oxygen supply is characterized in that in the smelting system as claimed in claim 1, and described oxygen adjustment control comprises:
Summation module, Oxygen Flow value and the required Oxygen Flow value summation of fuel oil that described summation module is required to described concentrate required Oxygen Flow value, coal;
Oxygen is regulated control module, and described oxygen is regulated control module and linked to each other with described summation module, oxygen regulating valve is adjusted to adjust oxygen supply by the oxygen flow controller according to the required flow value and the present flow rate value of described oxygen.
3. the control system of oxygen supply is characterized in that in the smelting system as claimed in claim 1, also comprises:
The concentrate adjustment control, described concentrate adjustment control links to each other with described concentrate material transmitter, the concentrate constant feeder is adjusted to adjust the flow of described concentrate by concentrate material amount controller according to the present flow rate value and the concentrate specified rate of described concentrate.
4. the control system of oxygen supply is characterized in that in the smelting system as claimed in claim 1, also comprises:
The coal adjustment control, described coal adjustment control links to each other with described coal charge transmitter, the coal constant feeder is adjusted to adjust the flow of described coal by the coal charge amount controller according to the present flow rate value and the coal specified rate of described coal.
5. the control system of oxygen supply is characterized in that in the smelting system as claimed in claim 1, also comprises:
The fuel oil adjustment control, described fuel oil adjustment control links to each other with described fuel flow transmitter, fuel regulator valve is adjusted to adjust the flow of described fuel oil by the fuel flow controller according to the present flow rate value and the fuel oil specified rate of described fuel oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200626144U CN202058043U (en) | 2011-03-10 | 2011-03-10 | Oxygen supply control system in smelting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200626144U CN202058043U (en) | 2011-03-10 | 2011-03-10 | Oxygen supply control system in smelting system |
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| Publication Number | Publication Date |
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| CN202058043U true CN202058043U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200626144U Expired - Lifetime CN202058043U (en) | 2011-03-10 | 2011-03-10 | Oxygen supply control system in smelting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681558A (en) * | 2011-03-10 | 2012-09-19 | 中国恩菲工程技术有限公司 | Control system for oxygen supply in smelting system |
-
2011
- 2011-03-10 CN CN2011200626144U patent/CN202058043U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681558A (en) * | 2011-03-10 | 2012-09-19 | 中国恩菲工程技术有限公司 | Control system for oxygen supply in smelting system |
| CN102681558B (en) * | 2011-03-10 | 2015-11-25 | 中国恩菲工程技术有限公司 | The control system of oxygen supply in smelting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111130 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |