CN201648427U - Coke automatic online water-measuring and material-preparing system - Google Patents
Coke automatic online water-measuring and material-preparing system Download PDFInfo
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- CN201648427U CN201648427U CN2010201653680U CN201020165368U CN201648427U CN 201648427 U CN201648427 U CN 201648427U CN 2010201653680 U CN2010201653680 U CN 2010201653680U CN 201020165368 U CN201020165368 U CN 201020165368U CN 201648427 U CN201648427 U CN 201648427U
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- coke
- moisture
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Abstract
The utility model relates to a coke automatic online water-measuring and material-preparing system, which mainly consists of a neutron moisture gauge, a material-preparing system and a computer control system. The neutron moisture gauge is used for measuring the moisture content of coke on line; the material-preparing system is used for distributing furnace burden; the output of the neutron moisture gauge is connected with the input of the computer control system; and the output of the computer control system is connected with the input of the material-preparing system. The coke automatic online water-measuring and material-preparing system has the advantages of stable operation, high measuring accuracy, and the capacities of automatically and accurately reflecting the coke moisture. The system can automatically prepare the materials according to the coke moisture, has the function of automatically compensating the coke moisture, displays the coke moisture on line in real time, prompts the working operation, such as regulating the coke amount, coal ratio, wind temperature, air quantity and other indexes, ensures relatively stable thermal system for a blast furnace, accelerates smooth furnace condition, and realizes coking and iron increase.
Description
Technical field
The utility model relates to a kind of coke and surveys the water feed proportioning system, refer to that specifically a kind of coke automatic on-line surveys the water feed proportioning system, native system can replace traditional manual operation to blast-furnace smelting with the water content of coke carry out automatically, accurately, online test and carry out automatic blending.
Background technology
Reinforcement day by day along with blast-furnace smelting requires blast furnace operating more stable, to improve the blast-furnace technique quality index.But the supplier of blast furnace heat and reductive agent---the coke moisture fluctuation is big, generally fluctuates between 3-7%, causes furnace temperature fluctuation big thus.Therefore need know coke moisture content exactly, so that it is carried out revisal.And the water content detection of coke adopts manual method to carry out mostly at present, once be as the criterion at coke-oven plant's sample examination with each class, chemical examination is carried out in the laboratory, by coke is heated, make wherein contained moisture evaporation, obtain the water content of coke by the quality of coke before and after relatively heating.
Existing this coke moisture content test is eight hours because a class is only detected once such as a class, be exactly so selective examination in eight hours once, result has this time just represented the coke moisture situation of whole class.In fact, coke moisture is random fluctuation, and this detection means can't detect into oven coke moisture random fluctuation situation at all, thereby can't carry out revisal accurately to it, and then causes actually to go into stove and do the amount of coke fluctuation and reach about 3%.According to measuring and calculating, this fluctuation can cause the fluctuation of the pig iron [Si] ± 0.3%, if calculate by normal running [Si] 0.45-0.65%, the coke moisture fluctuation may make [Si] 0.15-0.95% fluctuation under the constant situation of other conditions.When occurring the cool accident of stove down in limited time, influence is produced, the untimely great technology accident that hearth freeze-up may occur if section chief's operation is taken measures; When [Si] at the last blast furnace hanging that is difficult to walk that then can make in limited time, influence smooth operation of furnace, high furnace temperature can often occur and make cupola well pad knot, production and technical indication descends.
In a word, traditional detection method exists the maximum drawback that detected result lags behind production process control, is difficult to satisfy the rapid detection of modern production and the technical requirements of water compensation closed-loop control.If prepare burden, will bring considerable influence to production based on such detected result.
Summary of the invention
At the prior art above shortcomings, the purpose of this utility model provide a kind of can to blast-furnace smelting with the water content of coke carry out automatically, accurately, on-line testing and the system of preparing burden.
The purpose of this utility model is achieved in that coke automatic on-line survey water feed proportioning system, it mainly is made up of neutron moisture tester, feed proportioning system and computer control system, neutron moisture tester is used for the water content of on-line measurement coke, feed proportioning system is used for the dispensing of furnace charge, the output of neutron moisture tester connects the input of computer control system, and the output of computer control system connects the input of feed proportioning system.
Further, the output of described neutron moisture tester connects the input of computer control system by the V/I umformer, and the V/I umformer is used for the current signal of standard that the output signal of neutron moisture tester is converted to.
The output of described neutron moisture tester connects indicating meter simultaneously, shows the coke moisture value by indicating meter.
The utility model is stable, and the measuring accuracy height can be automatically, accurate response goes out coke moisture.Native system can be according to coke moisture automatic blending, and it has the coke moisture automatic compensation function, and the coke moisture real-time online shows, prompting section chief operation as adjusting indexs such as amount of coke, coal ratio, wind-warm syndrome, air quantity, guarantees that the blast furnace thermal system is relatively stable, promote furnace condition anterograde, realize that coking increases iron.
Description of drawings
Fig. 1-the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the utility model coke automatic on-line is surveyed the water feed proportioning system, it mainly is made up of neutron moisture tester, feed proportioning system and computer control system, neutron moisture tester is used for the water content of on-line measurement coke, feed proportioning system is used for the dispensing of furnace charge, the output of neutron moisture tester connects the input of computer control system, and the output of computer control system connects the input of feed proportioning system.
Further, the output signal (being moisture value) that the coke neutron moisture tester is measured converts the current signal of standard to by the V/I umformer, is input to the computer control system of blast furnace again.The output of neutron moisture tester connects indicating meter simultaneously, shows the coke moisture value by indicating meter.Operator can select the moisture revisal or select automatic revisal moisture mode by moisture value and the fluctuation tendency that shows on the display picture, and computer can be gone into oven coke moisture by automatic setting.In addition, utilize computer to enter moisture value and trend curve thereof on the display picture, can manually revise moisture coke numerical value or adjust the coal amount, wind-warm syndrome remedies, and makes furnace temperature be stabilized in specialized range, promotes furnace condition anterograde, realizes that joint Jiao increases iron.
The neutron aquametry is the detection technique of a science practicality growing up nearly two more than ten years, is a kind of non-contact type on-line measurement technology, have accurately, stable, reliably reach corresponding suitability.
Neutron moisture tester of the present utility model is selected German BERTHOLD Technologies GmbH﹠amp for use; LB-350 type the neutron moisture tester that CO.KG company produces.A verifying attachment of its two kinds of different sizes can be installed in the inside or the outside of tested material container respectively, and simple installation does not influence the normal operation of production process, the envrionment temperature that can adapt to: 0-50 ℃.Observed value is not subjected to the detrimentally affect of parameter values such as the temperature, pressure, material density, pH value of measured medium.
The coke neutron is surveyed the ultimate principle of water: measure moisture content with nuclear physics and be based on fast neutron is become thermal neutron by the hydrogen nuclei scattering in the material principle.And the big material of ordination number almost can not make fast neutron slack-off.The quantity that the fast neutron of launching from fast neutron source is transformed into thermal neutron only with the survey material in the content of protium, that is water content is relevant.If neutron source and slow neutron detector are combined, just can record the water content in the material, this measurement is noncontact.
The chemical bond of temperature, pressure, pH value, granularity and material etc. does not all influence measuring result.
According to hydrogen atom shared proportion in water, hydrogen richness changes 1%, and then water content changes 9%.Displayed value is approximate to be directly proportional with the volume percent of water content.By the merchant of water content and density of material, can draw the weight percent of water content.If material density is constant, displayed value can directly be demarcated with weight percent.
The utility model utilizes computer control system can generate (comprising data communication system) momentary value, hourly average value, daily mean, monthly average value of coke water score value etc., these data can be used as factory's border clearing foundation, utilize automatic revisal moisture program software, automatic setting is gone into oven coke moisture, and can realizing doing Jiao, to go into the stove amount relatively stable.
Native system has fundamentally solved the influence of coke moisture fluctuation to conditions of blast furnace, for blast furnace operating provides reliable foundation.The section chief can rationally use other parameters such as wind-warm syndrome, injection coal amount to regulate thermal system by going into oven coke moisture at any time now.Not clear furnace temperature fluctuation phenomenon obviously reduces, and furnace temperature stability takes a turn for the better, and adds the progress and the raising of operative technique, and the pig iron [Si] mean value descends, and the standard deviation of [Si] reduces, and has vital role to reducing comprehensive coke ratio.Experiment shows that average comprehensive coke ratio was 523kg/t.fe before native system came into operation, and the average comprehensive coke ratio in the back of coming into operation is 521kg/t.fe, and effect is fairly obvious, has created certain economic benefits.
Claims (3)
1. the coke automatic on-line is surveyed the water feed proportioning system, it is characterized in that: it mainly is made up of neutron moisture tester, feed proportioning system and computer control system, neutron moisture tester is used for the water content of on-line measurement coke, feed proportioning system is used for the dispensing of furnace charge, the output of neutron moisture tester connects the input of computer control system, and the output of computer control system connects the input of feed proportioning system.
2. coke automatic on-line according to claim 1 is surveyed the water feed proportioning system, it is characterized in that: the output of described neutron moisture tester connects the input of computer control system by the V/I umformer, and the V/I umformer is used for the current signal of standard that the output signal of neutron moisture tester is converted to.
3. coke automatic on-line according to claim 1 and 2 is surveyed the water feed proportioning system, and it is characterized in that: the output of described neutron moisture tester connects indicating meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201653680U CN201648427U (en) | 2010-04-21 | 2010-04-21 | Coke automatic online water-measuring and material-preparing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201653680U CN201648427U (en) | 2010-04-21 | 2010-04-21 | Coke automatic online water-measuring and material-preparing system |
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| Publication Number | Publication Date |
|---|---|
| CN201648427U true CN201648427U (en) | 2010-11-24 |
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| CN2010201653680U Expired - Fee Related CN201648427U (en) | 2010-04-21 | 2010-04-21 | Coke automatic online water-measuring and material-preparing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337652A (en) * | 2021-05-14 | 2021-09-03 | 阳春新钢铁有限责任公司 | Blast furnace coke moisture compensation method |
-
2010
- 2010-04-21 CN CN2010201653680U patent/CN201648427U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337652A (en) * | 2021-05-14 | 2021-09-03 | 阳春新钢铁有限责任公司 | Blast furnace coke moisture compensation method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20140421 |