CN105177200A - Blast furnace coal injection system and control method thereof - Google Patents
Blast furnace coal injection system and control method thereof Download PDFInfo
- Publication number
- CN105177200A CN105177200A CN201510565767.3A CN201510565767A CN105177200A CN 105177200 A CN105177200 A CN 105177200A CN 201510565767 A CN201510565767 A CN 201510565767A CN 105177200 A CN105177200 A CN 105177200A
- Authority
- CN
- China
- Prior art keywords
- tank
- valve
- winding
- coal
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Air Transport Of Granular Materials (AREA)
Abstract
The invention provides a blast furnace coal injection system. The blast furnace coal injection system comprises an injection tank, a distributor, an injection gun and a coal powder bin communicated through pipes, wherein a quantitative feeder is arranged at the bottom of the injection tank; a coal powder main pipe is arranged between an outlet of the quantitative feeder and the distributor and the injection gun, and is provided with a coal outlet valve and a coal conveying valve; and a pressure homogenizing pipe is arranged between the coal powder main pipe and the top of the injection tank. An air source main pipe is divided into three pipes of pressure stabilization, injection and air replenishment, which are respectively connected with the injection tank, the quantitative feeder and the coal powder main pipe. A control method of the blast furnace coal injection system is as follows: while one injection tank injects, the other injection tank performs preparations of pressure relief, quick relief, powder loading, pressurization and waiting; after the injection of the first injection tank is finished, the tank is replaced; and then, the second injection tank enters the preparation process for alternate circulation. The quantitative feeder is mounted at the bottom of the injection tank, so that the injection precision is improved, the tank replacement fluctuation time is shortened, and necessary conditions are provided for stabilization of blast furnace production.
Description
Technical field
The invention belongs to blast furnace ironmaking coal powder injection technical field, particularly a kind of bf coal injection system and control method thereof.
Background technology
Usually in actual engineering design, injection system generally adopts two tanks or three tanks blowing process arranged side by side, in winding-up process, the control method of instantaneous injecting coal quantity is mainly adopted to the principle of " tank pressure coarse adjustment, tolerance finely tune ", calculate injecting coal quantity by tank of jetting in statistics certain hour difference of weighing.This process system is simple, control method is reliable, and tolerance controls accurately, but has the feature such as complicacy and polytropy due to Dual-Phrase Distribution of Gas olid, and it is inadequate that coal amount controls to there is accuracy, hysteresis quality is large wait not enough.
When winding-up tank changes tank, owing to weighing, fluidized state in out of true or winding-up tank is difficult to control very easily to cause injecting coal quantity sudden change during changing tank, coal stream does not overlap, outlet pressure pulsations, the fluctuation of blast furnace temperature can be caused when time is longer, affect the working of a furnace and molten steel quality.Current most of steel enterprise injection system changes tank wave time and to account in whole winding-up process about about 10%, and this is very unfavorable to blast furnace stable smooth operation.
Summary of the invention
The deficiencies in the prior art in view of the above, the object of the present invention is to provide a kind of bf coal injection system, on the basis regulating tank pressure and air compensation, introduce constant feeder and subsystem thereof, realize the accurate control of coal amount.
For achieving the above object and other relevant objects, technical scheme of the present invention is as follows:
A kind of bf coal injection system, comprise by the Pulverized Coal Bin of pipeline communication, coal powder injection tank, divider and spray gun, described coal powder injection pot bottom is provided with constant feeder, and described constant feeder outlet is connected with being responsible for by coal dust between divider and spray gun.
By winding-up pot bottom installation constant feeder, realize gas and coal dust separately control, improve winding-up precision, solve traditional technology adjusts merely coal conservation existence deficiency by tolerance.
As preferably: be provided with pressure-equalizing passageway between described constant feeder outlet and winding-up tank top, pressure-equalizing passageway be provided with and all press vacuum breaker.
When constant feeder outlet initial pressure is larger, can through all pressing vacuum breaker pressure release to tank top of jetting, oppositely then obstructed.All press vacuum breaker can balance the pressure of jetting in tank and constant feeder on the one hand, be beneficial to lower coal.Effectively can prevent gas in winding-up tank from flowing through in pressure-equalizing passageway on the other hand, cause injection tank pressure to reduce.
As preferably: described coal dust supervisor is provided with the valve that produces coal, and coal dust supervisor is provided with for subsequent use the produce coal valve in parallel with the valve that produces coal, and this valve that produces coal for subsequent use is arranged on backup line.
Pressure-equalizing passageway is connected by backup line between being responsible for coal dust, backup line is arranged the valve that produces coal for subsequent use, when coal dust supervisor produce coal valve break down time, the corresponding valve that produces coal for subsequent use can be opened, maintain and normally jet.Certainly can also set up exist in constant feeder driving mechanism and prior art voltage stabilizing, ejection and tonifying Qi pipeline etc.
Another object of the present invention is to provide a kind of bf coal injection system with at least two winding-up tanks, can be realized the continuity of jetting, and improve winding-up precision by the switching between at least two winding-up tanks.It comprises Pulverized Coal Bin, 1# jets tank, 2# jets tank, divider and spray gun, described 1# winding-up tank and 2# winding-up tank are communicated with Pulverized Coal Bin, the bottom of described 1# winding-up tank and 2# winding-up tank is respectively arranged with 1# constant feeder and 2# constant feeder, described 1# constant feeder outlet is connected with the first pulverized coal channel, the outlet of 2# constant feeder is connected with the second pulverized coal channel, and this first pulverized coal channel and the second pulverized coal channel are connected to same divider and spray gun.
Arrange a constant feeder respectively to realize gas and coal dust and separately control, improve winding-up precision, and can when 1# jets tank winding-up, 2# tank of jetting be prepared, and realizes the continuous winding-up switching of two winding-up tanks.Winding-up tank can arrange multiple according to demand, is not limited to two.
As preferably: described 1# constant feeder and 2# constant feeder are connected to 1# drive unit and 2# drive unit, first fine coal pipeline of described 1# constant feeder outlet and 1# jets between tank top and 2# constant feeder exports the second fine coal pipeline and 2# jet between tank top and are provided with pressure-equalizing passageway, described pressure-equalizing passageway is provided with and all presses vacuum breaker.
As preferably: described first pulverized coal channel and the second pulverized coal channel are provided with the defeated coal valve of main coal valve, air compensation device and winding-up tank all successively, described main coal valve is parallel with the valve that produces coal for subsequent use, described 1# winding-up tank and 2# jet between tank top and Pulverized Coal Bin and are provided with coaling pipeline and relief pipeline, described pipeline of coalingging is provided with coaling valve and under to coaling valve, described relief pipeline is provided with pressure release valve and current-limiting apparatus; Described current-limiting apparatus two ends are parallel with quick-release valve.
As preferably: described 1# tank and 2# tank entrance of jetting of jetting is provided with voltage stabilizing pipeline, voltage stabilizing pipeline is provided with controlling valve of voltage regulation, voltage stabilizing under meter and pressure maintaining valve; 1# constant feeder and 2# constant feeder entrance are provided with winding-up pipeline, winding-up pipeline are provided with winding-up variable valve, winding-up under meter and blowing valve; Described air compensation device entrance is provided with tonifying Qi pipeline; Described 1# winding-up tank and 2# winding-up tank are provided with jetting pressure meter and weighing device.
The present invention provides a kind of control method of above-mentioned bf coal injection system simultaneously, comprise above-mentioned a kind of bf coal injection system, its key is: when 1# winding-up tank is in winding-up state, 2# tank of jetting performs pressure release in order, lets out, fills the step of powder, pressurization and wait soon, tank is changed when 1# jets after tank has been jetted, change tank complete after 2# tank of jetting jet, 1# tank of jetting performs pressure release in order, lets out, fills the step of powder, pressurization and wait soon; Whole winding-up process 1# tank and 2# tank of jet of jetting replaces successively, and circulate execution.
Described blowdown step is: first open pressure release valve, and primary mixture carries out slow pressure release through current-limiting apparatus;
Described step of letting out soon is: when injection tank pressure meter value of feedback is reduced to set(ting)value, open quick-release valve, when tank of jetting is equal with Pulverized Coal Bin internal pressure, completes pressure discharge operations;
Described dress powder step is: open down successively coaling valve and on to coaling valve, when weighing device display coal capacity reaches weighting set value, close successively close coaling valve and under to coaling valve, then close pressure release valve and quick-release valve, complete the operation of dress powder;
Described pressurization steps is: open the controlling valve of voltage regulation on voltage stabilizing pipeline and winding-up tank pressure maintaining valve successively, when injection tank pressure meter displayed value reaches set(ting)value, closes winding-up tank pressure maintaining valve;
Described waiting step is: monitor injection tank pressure count value changing conditions in real time in waiting process, if overpressure set(ting)value certain limit, then open pressure release valve, if lower than pressure set points certain limit, then open winding-up tank pressure maintaining valve, maintain winding-up tank internal pressure in allowed band.
Should be understood that the set(ting)value of above-mentioned parameters is all preset according to specific requirement, value may not be identical in varied situations, exemplifies no longer in detail at this.
As preferably: when 1# jet the weighing device display weighing value of tank lower than ground coal set(ting)value time, 1# tank and 2# tank of jetting of jetting performs and changes tank operation;
Described tank step of changing is: open defeated coal valve, the aeration valve of 2# winding-up tank successively, produce coal valve and blowing valve, tonifying Qi variable valve and winding-up variable valve control flow of air supply meter respectively and winding-up under meter remains unchanged, start 2# dosing machine actuating device and carry out speed-raising by setting acceleration and rotate, 1# dosing machine actuating device is rotated in deceleration by phase uniform acceleration simultaneously; When the rotating speed of 2# dosing machine actuating device bring up to change with 1# dosing machine actuating device the rotating speed before tank equal after, close 1# dosing machine actuating device, then the valve that produces coal of 1# winding-up tank, defeated coal valve, blowing valve and aeration valve is closed successively, change tank to complete, 2# winding-up tank starts winding-up, the controlling valve of voltage regulation that 2# winding-up tank is corresponding, winding-up variable valve and tonifying Qi variable valve are in automatic adjustment state, according to set(ting)value corresponding control voltage stabilizing under meter, jet under meter and flow of air supply meter respectively.
As mentioned above, the invention has the beneficial effects as follows: control injection tank pressure and gas in pipelines flow by arranging voltage stabilizing, winding-up and tonifying Qi, by winding-up pot bottom, constant feeder is installed, realize gas and coal dust separately control, improve winding-up precision, shorten simultaneously and change tank wave time, for stable blast fumance provides prerequisite.
Accompanying drawing explanation
Fig. 1 is the arrangement schematic diagram of injection system of the present invention;
Fig. 2 is control method time diagram of the present invention;
Fig. 3 is the injection system schematic diagram that the present invention is made up of single winding-up tank and subsystem thereof.
Piece mark explanation
1-Pulverized Coal Bin; 2,2 '-valve of above coalingging; 3,3 '-under to coaling valve; 4,4 '-current-limiting apparatus; 5,5 '-quick-release valve; 6,6 '-pressure release valve; 7-1# jets tank; 8,8 '-jetting pressure meter; 9,9 '-weighing device; 10-1# winding-up tank pressure maintaining valve; 10 '-2# winding-up tank pressure maintaining valve; 11-voltage stabilizing under meter; 12-winding-up under meter; 13-controlling valve of voltage regulation; 14-winding-up variable valve; 15-tonifying Qi variable valve; 16-flow of air supply meter; 17-1# winding-up tank blowing valve; 18-1# constant feeder; 19-1# dosing machine actuating device; 20-1# tank of jetting produces coal valve; 21-1# air compensation device; 22-1# winding-up tank aeration valve; 23-2# winding-up tank blowing valve; 24-2# constant feeder; 25-2# dosing machine actuating device; 26-2# tank of jetting produces coal valve; The defeated coal valve of 27-1# winding-up tank; 28-2# winding-up tank aeration valve; The defeated coal valve of 29-2# winding-up tank; 30-2# air compensation device; 31, the 31 '-valve that produces coal for subsequent use; 32,32 '-all press vacuum breaker; 33-2# jets tank; 34-divider; 35-spray gun.
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification sheets can understand other advantages of the present invention and effect easily.
As shown in Figure 1, a kind of bf coal injection system, comprise the Pulverized Coal Bin 1 by pipeline communication, 1# jets tank 7, 2# jets tank 33, 1# air compensation device 21, 2# air compensation device 30, divider 34 and spray gun 35, the bottom of described 1# winding-up tank 7 and 2# winding-up tank 33 is respectively arranged with 1# constant feeder 18 and 2# constant feeder 24, 1# constant feeder 18 and 2# constant feeder 24 export and are connected the first coal dust supervisor and the second coal dust supervisor respectively, first coal dust supervisor is disposed with 1# tank of jetting to produce coal valve 20, 1# air compensation device 21 and the defeated coal valve of 1# winding-up tank, second coal dust supervisor is disposed with 2# tank of jetting to produce coal valve, 2# air compensation device and the defeated coal valve of 2# winding-up tank.First coal dust supervisor and the second coal dust supervisor are connected with being responsible for by coal dust between divider 34 and spray gun 35; Described 1# winding-up tank 7 and 2# jet between tank 33 top and Pulverized Coal Bin 1 and are provided with coaling pipeline and relief pipeline, described pipeline of coalingging is provided with coaling valve 2,2 ' and under to coaling valve 3,3 ', described relief pipeline is provided with pressure release valve 6,6 ' and current-limiting apparatus 4,4 '; Described current-limiting apparatus 4,4 ' two ends are provided with quick-release valve 5,5 ' in parallel.
1# constant feeder 18 and 2# constant feeder 24 are connected to 1# drive unit 19 and 2# drive unit 25, by the rotating speed of drive unit fine adjustment constant feeder, constant feeder wherein and drive unit can adopt structure of the prior art, and its detailed configuration does not repeat them here; Second pulverized coal channel that first coal dust is responsible for and 1# jets between tank 7 top, 2# constant feeder 24 exports of 1# constant feeder 18 and 2# jet between tank 33 top and are respectively arranged with pressure-equalizing passageway, pressure-equalizing passageway is provided with and all presses vacuum breaker 32,32 ', the pressure in winding-up tank and constant feeder can be balanced, be beneficial to lower coal.And effectively prevent gas in winding-up tank from flowing through in pressure-equalizing passageway, cause injection tank pressure to reduce.
Pressure-equalizing passageway is connected by backup line between being responsible for coal dust, backup line is provided with the valve 31 ' that produces coal for subsequent use, 31, the valve 31 ' that produces coal for subsequent use, 31 and the valve that produces coal form parallel relationship, when coal dust supervisor 1# jet tank produce coal valve 20 or 2# jet tank produce coal valve 26 break down time, corresponding valve 31 ' or the valve 31 that produces coal for subsequent use of producing coal for subsequent use can be opened, maintain and normally jet;
Air supply manifold is divided into voltage stabilizing, winding-up and tonifying Qi three-way plece road to be responsible for be connected with winding-up tank, constant feeder, coal dust respectively.1# winding-up tank 7 and 2# winding-up tank 33 entrance are provided with voltage stabilizing pipeline, voltage stabilizing pipeline are provided with controlling valve of voltage regulation 13, voltage stabilizing under meter 11,1# winding-up tank pressure maintaining valve 10,2# winding-up tank pressure maintaining valve 10 '; 1# constant feeder 18 and 2# constant feeder 24 entrance are provided with winding-up pipeline, winding-up pipeline are provided with winding-up variable valve 14, winding-up under meter 12,1# winding-up tank blowing valve 17,2# winding-up tank blowing valve 23; 1# air compensation device 21 and 2# air compensation device 30 entrance are provided with tonifying Qi pipeline, tonifying Qi pipeline are provided with tonifying Qi variable valve 15, flow of air supply meter 16,1# winding-up tank aeration valve 22,2# winding-up tank aeration valve 28.
Wherein the coal injection system of single winding-up tank and subsystem formation thereof, has comprised in the above-described embodiments, and above-described embodiment is made up of the subsystem of two winding-up tanks and correspondences thereof, and its structure no longer repeats at this, as shown in Figure 3.
The present invention provides a kind of coal powder injection control method based on above-mentioned bf coal injection system simultaneously, when 1# jet tank 7 be in winding-up state time, 2# jet tank 33 perform t1 pressure release → t2 in order and let out soon → t3 fills powder → t4 pressurization → t5 waiting step, wherein:
T1 pressure release: first open pressure release valve 6 ', primary mixture carries out slow pressure release through current-limiting apparatus 4 ';
T2 lets out soon: until 2# jet the jetting pressure meter 8 ' value of feedback of tank 33 be reduced to a certain setup pressure value time (setting according to demand), open quick-release valve 5 ', until 2# jet tank 33 equal with Pulverized Coal Bin 1 internal pressure time, complete pressure discharge operations;
T3 fills powder: open down successively coaling valve 3 ' and on to coaling valve 2 ', until weighing device 9 ' show coal capacity reach the set(ting)value of weighing time, close successively close coaling valve 2 ' and under to coaling valve 3 ', then close pressure release valve 6 ' and quick-release valve 5 ', complete the operation of dress powder;
T4 pressurizes: open controlling valve of voltage regulation 13 and 2# winding-up tank pressure maintaining valve 10 ' successively, when the jetting pressure meter 8 ' displayed value of 2# winding-up tank 33 reaches set(ting)value, closes 2# winding-up tank pressure maintaining valve 10 ';
T5 waits for: moment monitoring jetting pressure meter 8 ' changing conditions, if exceed set(ting)value certain limit (as exceeding 2% of set(ting)value), then open pressure release valve 6 ', if lower than set(ting)value certain limit (as exceeding 2% of set(ting)value), then open 2# winding-up tank pressure maintaining valve 31; The scope exceeding set(ting)value sets according to demand.
T6 changes tank: when the weighing device 9 of 1# winding-up tank 7 shows weighing value lower than ground coal set(ting)value, and 1# winding-up tank 7 and 2# winding-up tank 33 perform and change tank operation.
Changing tank process is: open the defeated coal valve 29 of 2# winding-up tank of 2# winding-up tank successively, 2# jets tank aeration valve 28,2# winding-up tank produces coal valve 26 and 2# winding-up tank blowing valve 23, tonifying Qi variable valve 15 and winding-up variable valve 14 control flow of air supply meter 16 respectively and winding-up under meter 12 remains unchanged, start 2# dosing machine actuating device 25 and carry out speed-raising by setting acceleration and rotate, 1# dosing machine actuating device 19 is rotated in deceleration by phase uniform acceleration simultaneously.When the rotating speed of 2# dosing machine actuating device 25 bring up to change with 1# dosing machine actuating device 19 rotating speed before tank equal after, close 1# dosing machine actuating device 19, then close the 1# 1# of tank tank of jetting of jetting successively to produce coal valve 20, the defeated coal valve 27 of 1# winding-up tank, 1# winding-up tank blowing valve 17 and 1# winding-up tank aeration valve 22, change tank to complete, 2# winding-up tank starts winding-up, controlling valve of voltage regulation 13, winding-up variable valve 14 and tonifying Qi variable valve 15 are in automatic adjustment state, voltage stabilizing under meter 11 is controlled according to set(ting)value is corresponding respectively, winding-up under meter 12 and flow of air supply meter 16.
1# tank of jetting changes after tank completes, and repeats flow process t1 to t6, and whole winding-up process 1# tank and 2# tank of jet of jetting replaces successively, and circulate execution.1# jet tank and 2# jet tank pressure release, let out soon, fill powder, pressurization, wait for, change that the process of tank is similar with principle.
As shown in Figure 2, winding-up process t1 to t6, can manually set as required, its time value range is as follows:
| Project | T1 pressure release | T2 lets out soon | T3 fills powder | T4 pressurizes | T5 waits for | T6 changes tank |
| Time (min) | 3～8 | 1～2 | 3～5 | 3～10 | 5～8 | 0.5～1 |
The present invention controls injection tank pressure and gas in pipelines flow by arranging voltage stabilizing, winding-up and tonifying Qi, by winding-up pot bottom, constant feeder is installed, realize gas and coal dust separately control, improve winding-up precision, shorten simultaneously and change tank wave time, for stable blast fumance provides prerequisite.
Above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, and any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or change.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. a bf coal injection system, comprise by the Pulverized Coal Bin of pipeline communication, coal powder injection tank, divider and spray gun, it is characterized in that: described coal powder injection pot bottom is provided with constant feeder, the outlet of described constant feeder is connected with being responsible for by coal dust between divider and spray gun.
2. a kind of bf coal injection system according to claim 1, is characterized in that: be provided with pressure-equalizing passageway between described constant feeder outlet and winding-up tank top, pressure-equalizing passageway be provided with and all press vacuum breaker.
3. a kind of bf coal injection system according to claim 2, is characterized in that: described coal dust supervisor is provided with the valve that produces coal, coal dust supervisor is provided with for subsequent use the produce coal valve in parallel with the valve that produces coal.
4. a bf coal injection system, it is characterized in that: comprise Pulverized Coal Bin, 1# jets tank, 2# jets tank, divider and spray gun, described 1# winding-up tank and 2# winding-up tank are communicated with Pulverized Coal Bin, the bottom of described 1# winding-up tank and 2# winding-up tank is respectively arranged with 1# constant feeder and 2# constant feeder, described 1# constant feeder outlet is connected with the first pulverized coal channel, the outlet of 2# constant feeder is connected with the second pulverized coal channel, and this first pulverized coal channel and the second pulverized coal channel are connected to same divider and spray gun.
5. a kind of bf coal injection system according to claim 4, it is characterized in that: described 1# constant feeder and 2# constant feeder are connected to 1# drive unit and 2# drive unit, first fine coal pipeline of described 1# constant feeder outlet and 1# jets between tank top and 2# constant feeder exports the second fine coal pipeline and 2# jet between tank top and are provided with pressure-equalizing passageway, described pressure-equalizing passageway is provided with and all presses vacuum breaker.
6. a kind of bf coal injection system according to claim 4, it is characterized in that: described first pulverized coal channel and the second pulverized coal channel are provided with the defeated coal valve of main coal valve, air compensation device and winding-up tank all successively, described main coal valve is parallel with the valve that produces coal for subsequent use, described 1# winding-up tank and 2# jet between tank top and Pulverized Coal Bin and are provided with coaling pipeline and relief pipeline, described pipeline of coalingging is provided with coaling valve and under to coaling valve, described relief pipeline is provided with pressure release valve and current-limiting apparatus; Described current-limiting apparatus two ends are parallel with quick-release valve.
7. a kind of bf coal injection system according to claim 6, is characterized in that: described 1# winding-up tank and 2# winding-up tank entrance are provided with voltage stabilizing pipeline, voltage stabilizing pipeline are provided with controlling valve of voltage regulation, voltage stabilizing under meter and pressure maintaining valve; 1# constant feeder and 2# constant feeder entrance are provided with winding-up pipeline, winding-up pipeline are provided with winding-up variable valve, winding-up under meter and blowing valve; Described air compensation device entrance is provided with tonifying Qi pipeline; Described 1# winding-up tank and 2# winding-up tank are provided with jetting pressure meter and weighing device.
8. the control method of a bf coal injection system, comprise a kind of bf coal injection system described in claim 4 to 7 any one, it is characterized in that: when 1# winding-up tank is in winding-up state, 2# tank of jetting performs pressure release in order, lets out, fills the step of powder, pressurization and wait soon, tank is changed when 1# jets after tank has been jetted, change tank complete after 2# tank of jetting jet, 1# tank of jetting performs pressure release in order, lets out, fills the step of powder, pressurization and wait soon; Whole winding-up process 1# tank and 2# tank of jet of jetting replaces successively, and circulate execution.
9. the control method of a kind of bf coal injection system according to claim 8, is characterized in that:
Described blowdown step is: first open pressure release valve, and primary mixture carries out slow pressure release through current-limiting apparatus;
Described step of letting out soon is: when injection tank pressure meter value of feedback is reduced to set(ting)value, open quick-release valve, when tank of jetting is equal with Pulverized Coal Bin internal pressure, completes pressure discharge operations;
Described dress powder step is: open down successively coaling valve and on to coaling valve, when weighing device display coal capacity reaches weighting set value, close successively close coaling valve and under to coaling valve, then close pressure release valve and quick-release valve, complete the operation of dress powder;
Described pressurization steps is: open the controlling valve of voltage regulation on voltage stabilizing pipeline and winding-up tank pressure maintaining valve successively, when injection tank pressure meter displayed value reaches set(ting)value, closes winding-up tank pressure maintaining valve;
Described waiting step is: monitoring injection tank pressure count value changing conditions in real time, if overpressure set(ting)value, then opens pressure release valve, if lower than pressure set points, then opens winding-up tank pressure maintaining valve, maintains winding-up tank internal pressure in setting range.
10. the control method of a kind of bf coal injection system according to claim 8, is characterized in that: when the weighing device display weighing value of 1# winding-up tank is lower than ground coal set(ting)value, and 1# winding-up tank and the execution of 2# winding-up tank are changed tank and operated;
Described tank step of changing is: open defeated coal valve, the aeration valve of 2# winding-up tank successively, produce coal valve and blowing valve, tonifying Qi variable valve and winding-up variable valve control flow of air supply meter respectively and winding-up under meter remains unchanged, start 2# dosing machine actuating device and carry out speed-raising by setting acceleration and rotate, 1# dosing machine actuating device is rotated in deceleration by phase uniform acceleration simultaneously; When the rotating speed of 2# dosing machine actuating device bring up to change with 1# dosing machine actuating device the rotating speed before tank equal after, close 1# dosing machine actuating device, then the valve that produces coal of 1# winding-up tank, defeated coal valve, blowing valve and aeration valve is closed successively, change tank to complete, 2# winding-up tank starts winding-up, the controlling valve of voltage regulation that 2# winding-up tank is corresponding, winding-up variable valve and tonifying Qi variable valve are in automatic adjustment state, according to set(ting)value corresponding control voltage stabilizing under meter, jet under meter and flow of air supply meter respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510565767.3A CN105177200B (en) | 2015-09-08 | 2015-09-08 | A kind of bf coal injection system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510565767.3A CN105177200B (en) | 2015-09-08 | 2015-09-08 | A kind of bf coal injection system and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105177200A true CN105177200A (en) | 2015-12-23 |
| CN105177200B CN105177200B (en) | 2018-12-25 |
Family
ID=54899622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510565767.3A Active CN105177200B (en) | 2015-09-08 | 2015-09-08 | A kind of bf coal injection system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105177200B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733098A (en) * | 2017-04-20 | 2018-11-02 | 北新集团建材股份有限公司 | A kind of control pressurer system and control method |
| CN108795503A (en) * | 2018-07-04 | 2018-11-13 | 安泰环境工程技术有限公司 | Pressurization of dry pulverized coal dense-phase transporting system and method |
| CN109897923A (en) * | 2019-04-10 | 2019-06-18 | 中冶赛迪技术研究中心有限公司 | A kind of streaming tank, coal powder injection apparatus of blast furnace, system and control method |
| CN111154933A (en) * | 2020-01-03 | 2020-05-15 | 青岛恒拓环保科技有限公司 | Pressure equalizing device between injection tanks of blast furnace coal injection system |
| CN117947232A (en) * | 2024-03-27 | 2024-04-30 | 唐山学院 | Environment-friendly intelligent blast furnace injection system and pressure supplementing and pressure releasing control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295760Y (en) * | 1996-10-08 | 1998-10-28 | 鞍山钢铁集团公司 | Coal powder single pipeway blowing unit of blast furnace |
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN204939505U (en) * | 2015-09-08 | 2016-01-06 | 中冶赛迪工程技术股份有限公司 | A kind of bf coal injection system |
-
2015
- 2015-09-08 CN CN201510565767.3A patent/CN105177200B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295760Y (en) * | 1996-10-08 | 1998-10-28 | 鞍山钢铁集团公司 | Coal powder single pipeway blowing unit of blast furnace |
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN204939505U (en) * | 2015-09-08 | 2016-01-06 | 中冶赛迪工程技术股份有限公司 | A kind of bf coal injection system |
Non-Patent Citations (2)
| Title |
|---|
| 刘毅等: "克莱德公司高炉喷煤工艺的技术改进", 《沙洲职业工学院学报》 * |
| 徐传广: "克莱德旋转给料喷吹技术在沙钢5800m3高炉喷煤上的应用", 《2012年全国炼铁生产技术会议暨炼铁学术年会文集（下）》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733098A (en) * | 2017-04-20 | 2018-11-02 | 北新集团建材股份有限公司 | A kind of control pressurer system and control method |
| CN108795503A (en) * | 2018-07-04 | 2018-11-13 | 安泰环境工程技术有限公司 | Pressurization of dry pulverized coal dense-phase transporting system and method |
| CN109897923A (en) * | 2019-04-10 | 2019-06-18 | 中冶赛迪技术研究中心有限公司 | A kind of streaming tank, coal powder injection apparatus of blast furnace, system and control method |
| CN109897923B (en) * | 2019-04-10 | 2024-04-30 | 中冶赛迪技术研究中心有限公司 | Control method of blast furnace coal injection device |
| CN111154933A (en) * | 2020-01-03 | 2020-05-15 | 青岛恒拓环保科技有限公司 | Pressure equalizing device between injection tanks of blast furnace coal injection system |
| CN111154933B (en) * | 2020-01-03 | 2021-06-08 | 青岛恒拓环保科技有限公司 | Pressure equalizing device between injection tanks of blast furnace coal injection system |
| CN117947232A (en) * | 2024-03-27 | 2024-04-30 | 唐山学院 | Environment-friendly intelligent blast furnace injection system and pressure supplementing and pressure releasing control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105177200B (en) | 2018-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105177200A (en) | Blast furnace coal injection system and control method thereof | |
| CN103555872B (en) | System of blast furnace injection control method for fully automatic and system | |
| CN204939505U (en) | A kind of bf coal injection system | |
| CN204958970U (en) | Refining furnace ladle bottom blowing argon controlling means | |
| CN102787191A (en) | System and process for pulverized coal injection of blast furnace | |
| CN111304391A (en) | Intelligent coal injection blind spot type fluidization side discharging system of blast furnace | |
| CN204052823U (en) | A kind of electric furnace taps a blast furnace automatic stream inoculation device | |
| CN103190691B (en) | Pure water bringing device, method and device for loosening and gaining moisture | |
| CN203140205U (en) | Vertical mill grinding aid spraying device | |
| CN204165070U (en) | With the injection type coal, pulverulent fuel mixer of negative pressure regulatory function | |
| CN203279835U (en) | Blending device capable of improving blending precision of cut rolled stems | |
| CN106959606A (en) | Dynamic equalization regulation and control method in concentrate sorting system | |
| CN206083789U (en) | Automatic device of adding of billet casting covering slag | |
| CN202898447U (en) | Intelligent gas control valve station based on continuous gas control | |
| CN205806935U (en) | A kind of major and minor pipe switched system for mixed gas pressurization | |
| CN201702059U (en) | Atomization oil spraying device | |
| CN203692521U (en) | Constant-voltage glue supplying device for tipping paper | |
| CN212476796U (en) | Intelligent coal injection blind spot type fluidization side discharging system of blast furnace | |
| CN203251944U (en) | Purified water applying device and loose moisture-regain device | |
| CN214692236U (en) | Overflow type accurate flow dividing device | |
| CN210711597U (en) | Automatic control device for tank pressure of pulverized coal injection tank | |
| CN203508321U (en) | Glue solution proportion regulating device for glue filling machine | |
| CN205393487U (en) | Conticaster cutting single -stage closed loop liquefied gas flow control device for steel billet | |
| CN205173650U (en) | Ration oiling system | |
| CN208843215U (en) | A kind of online feeding-distribution device of bulk cargo |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |