CN103176456B - A kind of coal slurry automatic tracking system - Google Patents
A kind of coal slurry automatic tracking system Download PDFInfo
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- CN103176456B CN103176456B CN201310059906.6A CN201310059906A CN103176456B CN 103176456 B CN103176456 B CN 103176456B CN 201310059906 A CN201310059906 A CN 201310059906A CN 103176456 B CN103176456 B CN 103176456B
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- 239000003250 coal slurry Substances 0.000 title claims abstract description 95
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- 239000001301 oxygen Substances 0.000 claims description 23
- 238000002309 gasification Methods 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 8
- 150000002978 peroxides Chemical class 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 230000009191 jumping Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 206010051640 Ammoniuria Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Liquid Carbonaceous Fuels (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a kind of coal slurry automatic tracking system, including the first detection device and second detection device, compare and the comparator of output bias e for the second measured value h based on specified rate, the first measured value z of the first detection device output and second detection device output, and be connected to the controller of the output of described comparator, actuator and controlled device in turn；The output of described actuator exports controlled quentity controlled variable q and is connected with the feedback input end of second detection device, the input of described controlled device is used for accepting controlled quentity controlled variable q and interference effect f, and the output of controlled device exports controlled variable y and the feedback input end with the first detection device is connected.Coal slurry automatic tracking system of the present invention, automaticity in prior art is low, control accuracy can be overcome and promptness is the most poor and the defect such as poor stability, to realize automaticity is high, control accuracy and promptness all preferably and the good advantage of security.
Description
Technical field
The present invention relates to technical field of chemical, in particular it relates to a kind of coal slurry automatic tracking system.
Background technology
Jin Jiang chemical company synthesis ammoniuria prime implicant mesh gasification installation is since in June, 2012 drives, and at the run duration of half a year, gasification furnace the oxygen coal repeatedly caused because of peroxide occurs than high, oxygen coal jumping car lower than Gao Gao and coal slurry flow.Train number number is jumped over the past half year according to the said firm's gasifier operation, its reason the applicant is done and has conscientiously summed up and analyze, finding to cause repeatedly oxygen coal than high, oxygen coal than high, the reason of the low jumping car of coal slurry flow, abnormal mainly due to high-pressure coal slurry pump operation, single cylinder or multi-cylinder are not looked up and down.
The problem that coal slurry pump is not looked up and down, the applicant through repeatedly opening and inspecting import and export check valve and barrier film, find itself and without exception, and trend display coal slurry pump electric current II_P1301 has bigger decline immediately；Coal slurry pump outlet pressure PI_13001 and gasifier nozzle pressure reduction PDT13005 has bigger decline.Preliminary judgement is that coal slurry particle is uneven, causes import check valve to block or coal slurry gas enclosure causes coal slurry pump sky to beat.
Trend is further analyzed it can be seen that, although coal slurry flow-reduction causes gasification furnace interlocking to jump car to have 3 kinds of situations: 1. oxygen coal is than high 600 time delay 30S, and 2. oxygen coal is than high 695 time delay 20S, 3. the low 18M3/H of coal slurry flow.
But finally it is converted to the low jumping car of coal slurry flow (only A, C stove is the most once that oxygen coal is than high jumping car), trend show from first time oxygen coal lower than high coal slurry flow of reporting for work cause jumping car probably have the 20S time, but due to operating personnel's experience, technology and operation level limit, cause oxygen coal can not be timely, accurate and effective than time high take measures.By corresponding tendency chart and statistical form it can be seen that be reduced to be manually started more than control lag 10S at coal slurry flow, cause coal slurry flow to reach low value and finally cause jumping car.
Thus the applicant can be seen that accident is jumped car and caused mainly due to manual application of load is delayed.When occurring high-pressure coal pulp pump do not look up and down or look up and down abnormal, without finding in time, being accurately judged to, take measures in time, the lighter causes system shutdown.Severe one gasification furnace generation peroxide and significantly overtemperature even wash tower at carbon and occur to dodge quick-fried danger.
So, if designing a set of coal slurry automatic tracking system, when coal slurry amount begins to decline, system automatically detects and changes from motion tracking coal slurry amount, has the situation that time-triggered protocol single cylinder or twin-tub are not looked up and down completely.
In sum, during realizing the present invention, inventor finds at least to exist in prior art automaticity is low, control accuracy and promptness is the most poor and the defect such as poor stability.
Summary of the invention
It is an object of the invention to, for the problems referred to above, propose a kind of coal slurry automatic tracking system, to realize the accuracy that automaticity is high, control and the advantage that promptness is all preferable and security is good.
For achieving the above object, the technical solution used in the present invention is: a kind of coal slurry automatic tracking system, including the first detection device and second detection device, compare and the comparator of output bias e for the second measured value h based on specified rate, the first measured value z of the first detection device output and second detection device output, and be connected to the controller of the output of described comparator, actuator and controlled device in turn；The output of described actuator exports controlled quentity controlled variable q and is connected with the feedback input end of second detection device, the input of described controlled device is used for accepting controlled quentity controlled variable q and interference effect f, and the output of controlled device exports controlled variable y and the feedback input end with the first detection device is connected.
Further, described controller, including scattered control system (distributed control
Systems, is called for short DCS).
Further, described actuator includes frequency converter.
Further, described controlled device includes high-pressure coal pulp pump.
Further, described first detection device includes actual flow transmitter.
Further, described second detection device includes theoretical delivery transmitter.
Further, described comparator includes the internal comparison operation module of DCS.
Further, described controlled quentity controlled variable includes that frequency converter rotating speed, described controlled volume include that coal slurry flow, described specified rate include that coal slurry flow allows undulating value.
The coal slurry automatic tracking system of various embodiments of the present invention, owing to including the first detection device and second detection device, compare and the comparator of output bias e for the second measured value h based on specified rate, the first measured value z of the first detection device output and second detection device output, and be connected to the controller of the output of comparator, actuator and controlled device in turn；The output of actuator exports controlled quentity controlled variable q and is connected with the feedback input end of second detection device, the input of controlled device is used for accepting controlled quentity controlled variable q and interference effect f, and the output of controlled device exports controlled variable y and the feedback input end with the first detection device is connected；Can be during motion tracking, manual intervention at any time, and taken into full account the error that the system scan period brings to tracking system；Such that it is able to overcome automaticity in prior art is low, control accuracy and promptness is the most poor and the defect of poor stability, to realize automaticity is high, control accuracy and promptness all preferably and the good advantage of security.
Other features and advantages of the present invention will illustrate in the following description, and, partly become apparent from specification, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for specification, is used for together with embodiments of the present invention explaining the present invention, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the operation principle schematic diagram of coal slurry automatic tracking system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
According to embodiments of the present invention, provide a kind of coal slurry automatic tracking system, it is mainly used in solving gasification high-pressure coal slurry pump inlet check valve card, coal slurry gas enclosure, cause coal slurry flow fluctuation, the most delayed problem causing gasification furnace peroxide, overtemperature, gas component fluctuation even to jump car of manual intervention.
The coal slurry automatic tracking system of above-described embodiment, do not look up and down for coal slurry pump single cylinder or multi-cylinder, oxygen coal is caused to compare fluctuation, frequently jump car and have a strong impact on the actual conditions of production, if imagination the applicant can quickly improve high-pressure coal pulp pump frequency converter rotating speed, accelerate coal slurry flow velocity, reduce bulky grain deposition, just can effectively solve the situation of check valve card.Control oxygen coal ratio, stablize furnace temperature, stablize the purpose of downstream load.Situation in view of manual control lag.Design uses coal slurry flow automatic tracking system.The mentality of designing of this coal slurry automatic tracking system is to run abnormal at coal slurry pump, when causing coal slurry flow value fluctuation to be less than setting value, in time oxygen coal can be proceeded to coal slurry flow from motion tracking than regulation system automatically by Ratio control, rotating speed is quickly regulated according to coal slurry deviation value, and monitor oxygen coal ratio at any time, can stop when oxygen coal ratio returns to normal value following the tracks of.Extreme case coal slurry amount cannot correctly be followed the tracks of and can be automatically stopped in following range at the original coal slurry set.
As it is shown in figure 1, the coal slurry automatic tracking system of the present embodiment, mainly it is made up of controller, actuator, controlled device, the first detection device, second detection device and six parts of comparator.Wherein, controller can be DCS, and actuator can be frequency converter, and controlled device can be high-pressure coal pulp pump, and the first detection device can be actual flow transmitter, represents with FY13001A1；Second detection device can be theoretical delivery transmitter, represents with FY13001A；Comparator can be the internal comparison operation block of DCS.Controlled quentity controlled variable be frequency converter rotating speed, controlled volume be coal slurry flow, specified rate be that coal slurry flow allows undulating value.
The operation principle of the coal slurry automatic tracking system of above-described embodiment is: for understanding correlation and signal contact between structure and each several part (link) of explanation coal slurry automatic tracking system, represent the course of work of coal slurry automatic tracking system in order to upper block figure (seeing Fig. 1).A link during each square represents coal slurry automatic tracking system in this block diagram, represents, with the straight line of a band arrow, the relation that they are mutual between square, and arrow is pointed represents signal transfer direction, the title of letter explanation signal on line.In Fig. 1, coal slurry flow is exactly the parameter requiring to keep definite value in production process, is referred to as controlled parameter, represents with symbol y in automatic control system, and y is the output signal of controlled device square.In this coal slurry automatic tracking system, the factor affecting coal slurry flow y fluctuation is probably ature of coal problem, import check valve bite, the defect of coal slurry pump own etc..This foeign element causing controlled parameter fluctuation is referred to as interference effect, represents with symbol f.Interference effect is the input signal acting on controlled device, points to controlled device square with arrow.
As seen from Figure 1, the change of frequency converter rotating speed causes due to frequency converter action, then frequency converter rotating speed had both been the output signal of actuator square.Meanwhile, the change of frequency converter rotating speed affects coal slurry flow and plays regulation effect, all input signals being also to act on controlled device, points to controlled device square with the arrow of the straight line of band arrow, and tail end is connected to actuator square.The change of frequency converter rotating speed simultaneously has influence on the change of coal slurry theoretical delivery, so being also the input signal acting on second detection device, second detection device square, the output signal h(coal slurry theoretical delivery of second detection device is pointed to arrow) enter and compare mechanism.Controlled variable y(coal slurry flow signal) it is the input signal of the first detection device, and the output signal z(coal slurry flow of the first detection device) compare also into comparing mechanism output signal h and set-point signal x with second detection device, obtain deviation signal e(e=x-z-h), and it is sent to controller.Controller, according to deviation signal e, calculates result by certain operation law, sends control signal p to actuator, makes frequency converter action, change its rotating speed, make controlled variable y coal slurry stability of flow in the range of requiring.
The coal slurry automatic tracking system of above-described embodiment, has the following characteristics that
(1) in coal chemical industry, propose coal slurry first from motion tracking concept, and put into practice；
(2) the deviation using actual coal slurry flow and theoretical coal slurry flow is adjusted；
(3) oxygen coal Ratio control and the switching of coal slurry automatic tracking system Non-disturbance online；
(4) according to gasification furnace load after coal slurry automatic tracking system puts into, automatically carry out coal slurry flow upper and lower wire crimp position, make system not have less stress and over control, stop peroxide during gasification furnace regulation, it is ensured that production safety；
Whether the most distinctive tracking system sign position, make tracking system put into very clear.
The coal slurry automatic tracking system of above-described embodiment, interlocking can be realized with gasification furnace safety interlock system SIS system, in use, coal slurry automatic tracking system is according to gasification furnace load variations dynamic corrections coal slurry flow low jumping car value, it is to avoid during gasification furnace underrun, coal slurry changes in flow rate causes jumping car.This coal slurry automatic tracking system, at least can reach following beneficial effect:
(1) using automatic tracking system to overcome the lag situation of manually regulation completely, real-time is good, do not have time delay in regulation；
5 jumping cars, the statistics no discovery of the automatic tracking system that the comes into operation later moon within when the most manually following the tracks of coal slurry amount one month, are occurred to jump car；
(3) during regulation, oxygen coal is decreased obviously than peak value；
(4) oxygen coal substantially shortened than the high duration (peroxide time)；
(5) not because oxygen coal skips car than with coal slurry flow；
(6) oxygen coal can revert to the runtime value before changing by fast and stable than after change, and furnace temperature changes within 10 °, downstream stable conditions.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although the present invention being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. a coal slurry flow automatic tracking system, it is characterised in that include the first detection device and the second detection dress
Put, for based on specified rate x, the first measured value z and the of second detection device output of the first detection device output
Two measured value h compare and the comparator of output bias e, described deviation e=x-z-h, and are connected in turn described
The controller of the output of comparator, actuator and controlled device；Described actuator output output controlled quentity controlled variable q,
And be connected with the feedback input end of second detection device, the input of described controlled device is used for accepting controlled quentity controlled variable q and doing
Disturbing effect f, the output of controlled device exports controlled variable y and the feedback input end with the first detection device is connected；
Described controller, including distributed monitoring control system；
This coal slurry flow automatic tracking system, has the following characteristics that
Oxygen coal Ratio control and the switching of coal slurry flow automatic tracking system Non-disturbance online；
After coal slurry flow automatic tracking system puts into, according to gasification furnace load, automatically carry out the upper and lower wire crimp of coal slurry flow
Position, makes system not have less stress and over control, stops peroxide during gasification furnace regulation, it is ensured that production safety；
Run abnormal at coal slurry pump, when causing coal slurry flow value fluctuation to be less than specified rate, can be in time by oxygen coal
Automatically proceeded to coal slurry flow by Ratio control from motion tracking than regulation system, quickly regulate according to coal slurry flow deviation value and turn
Speed, described coal slurry i.e. deviation e of flow deviation value, and monitoring oxygen coal ratio at any time, can stop when oxygen coal ratio returns to normal value
Only follow the tracks of, when coal slurry amount cannot correctly be followed the tracks of, can be automatically stopped in following range at the original coal slurry set.
Coal slurry flow automatic tracking system the most according to claim 1, it is characterised in that described actuator bag
Include frequency converter.
Coal slurry flow automatic tracking system the most according to claim 1, it is characterised in that described controlled device
Including high-pressure coal pulp pump.
Coal slurry flow automatic tracking system the most according to claim 1, it is characterised in that described first detection
Device includes actual flow transmitter.
Coal slurry flow automatic tracking system the most according to claim 1, it is characterised in that described second detection
Device includes theoretical delivery transmitter.
Coal slurry flow automatic tracking system the most according to claim 1, it is characterised in that described comparator bag
Include the internal comparison operation module of DCS.
Coal slurry flow automatic tracking system the most according to claim 1, it is characterised in that described controlled quentity controlled variable bag
Including frequency converter rotating speed, described controlled variable includes that coal slurry flow, described specified rate include that coal slurry flow allows undulating value.
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| CN201310059906.6A CN103176456B (en) | 2013-02-26 | 2013-02-26 | A kind of coal slurry automatic tracking system |
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| CN107216920B (en) * | 2016-03-22 | 2020-08-11 | 中国石油化工股份有限公司 | Safety control method of coal water slurry gasification furnace |
| CN113528192A (en) * | 2021-06-29 | 2021-10-22 | 江苏恒丰能环科技股份有限公司 | Intelligent regulating system for coal water slurry gasification |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4912256A (en) * | 1987-07-08 | 1990-03-27 | National Energy Council | Process for the oxidation of fine coal |
| CN1635050A (en) * | 2003-12-26 | 2005-07-06 | 中国科学院自动化研究所 | Automatic heating method for coke oven coking production |
| CN102425807A (en) * | 2011-11-23 | 2012-04-25 | 华北电力大学（保定） | Combustion feedforward and feedback composite optimization controlling method for pulverized coal fired boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174336B (en) * | 2011-02-25 | 2013-09-11 | 华东理工大学 | Hearth temperature control device and control method for multi-nozzle opposed coal water slurry gasification furnace |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4912256A (en) * | 1987-07-08 | 1990-03-27 | National Energy Council | Process for the oxidation of fine coal |
| CN1635050A (en) * | 2003-12-26 | 2005-07-06 | 中国科学院自动化研究所 | Automatic heating method for coke oven coking production |
| CN102425807A (en) * | 2011-11-23 | 2012-04-25 | 华北电力大学（保定） | Combustion feedforward and feedback composite optimization controlling method for pulverized coal fired boiler |
Non-Patent Citations (1)
| Title |
|---|
| "基于PLC的主运输皮带智能控制系统的研究与应用;邵国良等;《中国矿业》;20120831;第21卷;第641页第2段-第644页第4段，及附图图1 * |
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Address after: No. 98, Kashi East Road, Kuitun city, Yili Kazak Autonomous Prefecture, Xinjiang Uygur Autonomous Region 833200 Patentee after: Xinjiang Jinjiang Chemical Co.,Ltd. Country or region after: China Address before: No. 98, Kashi East Road, Kuitun city, Yili Kazak Autonomous Prefecture, Xinjiang Uygur Autonomous Region 833200 Patentee before: KUITUN JINJIANG CHEMICAL INDUSTRY CO.,LTD. Country or region before: China |