CN102591296A - Self-adaptive coordination control system for cement clinker production and cogeneration - Google Patents

Abstract

The invention relates to a self-adaptive coordination control system for cement clinker production and cogeneration, which comprises a clinker production line DCS (Distributed Control System) system, a cogeneration DCS system, a blind spot indicating system, and a clinker process quality analysis system. All the systems access a same industrial Ethernet, and all the system can carry out effective communication of partial data points by the same industrial Ethernet. The operation of process staffs are guided in a forecasting way by the blind spot indicating system and the clinker process quality analysis system, and meanwhile, the partial control is automatically coordinated. On the premise of meeting clinker craft and not enhancing coal consumption, the self-adaptive coordination control system adjusts cogeneration parameters, and realizes the maximization of generated energy. When the abnormal condition of cogeneration equipment appears, the self-adaptive coordination control system ensures the output maximization on the premise that dried raw materials are qualified is maximum.

Description

Cement clinker is produced and cogeneration self-adaptation coordinated control system

Technical field

The invention belongs to automation control area, is a kind of self-adaptation coordinated control system that relates to cement industry clinker production line and cogeneration.

Background technology

At present; The cogeneration of cement line is important measures of cement production enterprise energy-conserving and environment-protective; Be the technology that the low temperature exhaust heat (account for cement clinker and burn till total heat consumption more than 30%) that utilizes primary heater and cooler carries out cogeneration, can reduce the grog power consumption in theory more than 60%.And it is as an auxiliary workshop section of cement clinker line, can not be as traditional power station independent operating, can bring influence to original technological process, production status, quality condition inevitably; On the other hand, clinker cement production abnormal conditions, the form of raw material mill, coal mill, position of the sum of series conditioning Tower of primary heater or the like also can have influence on generated energy.Because cogeneration and grog line belong to two different industries; And in design, construction, also be independently; Be that clinker cement territory DCS and cogeneration territory DCS are two independently systems, present two domain operators understand the other side's production data situation through oral or phone, command separately through operator's self experience and produce; Such mode of production not only labour intensity is big; And be difficult in the maximization of pursuing generated energy under the situation that does not influence clinker quality, output, in case waste heat power generation equipment occurs unusually, also be difficult to the quality and the output of control raw material stoving.Pursue the maximization of generated energy in addition simply, bring negative effect for probably whole factory benefit.

Summary of the invention

In order to adapt to interacting between cogeneration and the grog production; Reduce operator's labour intensity to a certain extent; Improve generated energy not influencing under clinker quality, the output, the present invention provides the local auto-adaptive coordinated control system of a kind of cement industry clinker production line and cogeneration, and grog line DCS and cogeneration DCS are carried out partial data communication interlocking; Automatically regulate technological parameter through related data analysis and blind spot indication, accomplish the end in view.

Technical scheme

The technical solution adopted for the present invention to solve the technical problems is: total system comprises clinker production line DCS system, cogeneration DCS system, blind spot indication mechanism, grog processing quality analytic system, and each system inserts same EPA.Through same EPA, each system can carry out partial data point effective communication, and multiple domain is coordinated control; The blind spot infosystem through transferring to active station after the process data analytic system analyzing and processing, is used for the ruuning situation and the parameter of the local blind spot equipment of collection site to instruct and produces; The process data analytic system writes down real-time technological parameter; Division technique section and equipment group generate grog Wiring technology curve and generating curve, are the basis through the operational factor model of setting up a perfect condition, constantly upgrade the technology controlling and process rule automatically according to historical data; Through fine setting and forecast analysis; Carry out early warning in advance, and change the Passive Control parameter of regulating local control, on the basis of monitoring grog lineman condition, do not change the coal amount of feeding according to the active adjustment parameter; Automatically regulate the passive adjusting parameter in cogeneration territory, make cogeneration not improve the basic generated energy maximization of grog cost.

Beneficial effect

Control more comprehensively, more coherent, improved whole robotization intensity,, do not increase under the situation of production cost, make the generated energy maximization, alleviated labor intensity of operating personnel to a certain extent, make factory's overall efficiency maximization not influencing clinker quality, output.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 cement clinker is produced with cogeneration self-adaptation coordinated control system and is formed structural drawing;

Fig. 2 data acquisition and conveying flow.

Embodiment

The utility model is made up of clinker production line DCS system, cogeneration DCS system, blind spot indication mechanism, grog processing quality analytic system, and each system inserts same EPA.Through same EPA, each system can carry out partial data point effective communication, and multiple domain is coordinated control.Clinker cement " territory " by raw material control station, calcining kiln tail control station, burn till the kiln hood control station, the cement control station is formed; Cogeneration " territory " is made up of boiler control station, turbodynamo control station, utility appliance control station.

Field control station PS (Process Control Station) mainly is made up of the PLC of uniform brand and corresponding I/O module, Ethernet interface, EBI, coupling mechanism etc.; Through hardwire and bus mode monitoring field apparatus and intelligence instrument, data are passed to data transfer to active station and process data analytic system through Ethernet.

The engineer station is the basis with process section and OS site configuration; Conveying, grinding, storage, calcining and other processes according to actual materials flow are refined as a plurality of equipment start-stop groups; The warning of every equipment of configuration, fault, self is chain and equipment room is chain; During according to the characterizing definition group running status of field apparatus each equipment time-delay along open, along the chain condition and the time-delay that stop, be downloaded to field controller.When parameter reaches preset value, output alarm or fault-signal, the chain relevant device of delaying time jump stop, operation such as deceleration, valve closing.In the light of actual conditions, it is chain that the linkage relationship of field apparatus is divided into the startup that is used for opening device protection usefulness, the safety interlocking that self-protection is used in the equipment operation, in the equipment running process mutually between the operation of protection usefulness chain.

Operating personnel go up at active station OS (Operate Station) whole process flow are kept watch on, and in this process, divide territory, branchs authority to control the start-stop of field apparatus and the modification of technological parameter according to on-the-spot actual demand, and instruction issuing is handled to PS;

At general cement production enterprise; Some simple signals that oil station, Hydraulic Station, homogenization system, stacker-reclaimer, local control station, steam turbine DEH, the relevant control of ETS just simply will influence equipment operation offer host computer; The ruuning situation of these equipment is difficult to detect and control through host computer; And the operation of these equipment is directly chain to a lot of main process equipments, causes the monitoring blind spot.The blind spot indication mechanism is through the communication of PROFIBUS-DP bus mode; Through engineer station's configuration; Directly keep watch on its internal operation situation and correlation parameter; But do not participate in control directly, it directly transfers to the process data analytic system with relevant information, through the process data analytic system blind spot facility information is carried out pre-service after; Equipment failure, alerting signal, pre-alarm signal and reason thereof are transferred to the associative operation station with the mode of message queue, be beneficial to find out more rapidly the equipment breakdown reason and in time handle.

The production data analytic system comprises information acquisition unit, data storage cell, data analysis unit, and its execution in step is following:

Information acquisition unit through Ethernet from the below PS website gather grog line and cogeneration production technology related data, behind the production data that the blind spot indication mechanism is transmitted, divide workshop section, the subset group is stored to data storage cell;

Data analysis unit is at first produced real-time history curve with the data of data storage cell automatically, feeds back to active station and is used for inquiry; Simultaneously; Relevant device and parameter value during production data analytic system record typical fault state, according to the periodicity that detects cycle data variable quantity, equipment failure generation, the parameter information that expection is reached fault, alarm set point feeds back in active station; Be used for the operator is pointed out; So that carry out the technological parameter adjustment in advance, avoid causing accidents such as equipment failure, shutdown, putty, thereby have influence on the production capacity of whole factory;

Grog process monitoring unit has carried out initialization design according to cement production enterprise grog line and power generation process with waste heat system; Processing parameter requirement and technological parameter relevance to set customized parameter, perfect condition are the basis; Each parameter according to whole technology when stable changes to be analyzed; Infer repeated related parameter, calculate corresponding technological parameters cycle variation law and storage and renewal automatically.As customized parameter again refinement be divided into active adjustment parameter and passive adjusting parameter, active adjustment parameter such as kiln feeding, grinding machine feeding capacity; Be parameter concerning output, manual adjustments only, and passive adjusting parameter is as feeding coal amount, valve; The water pump feedwater; Motor speeds etc. all are for after realizing changing the active adjustment parameter, keep the technological parameter of perfect condition and serve.Production of grog line and cogeneration all are to be based upon on the basis of the heat energy distribution of coal combustion generation; When ature of coal changes; All process sections all can be affected; So at first system can change according to the parameter of production technology and comes on the basis of the desirable technological parameter of keeping each process section of grog line that to feed the coal amount be main to regulate, it is auxilliary regulating local adjustable parameter, seeks an equilibrium point automatically; And when certain local initiatively parameter (like grinding machine, kiln feeding capacity) when manually changing; Guaranteeing under the constant situation of other local process environments; System can come forecast analysis and calculate other process parameter value that reach the required change of desirable technological parameter according to the rule that historical data analysis obtains; Through active station with instruction issuing to control station, recomputate according to actual change curve and prediction, meet the requirements of the technological parameter environment so repeatedly;

Behind grog line active adjustment parameter change; The cogeneration regulon can be through cogeneration field parameters such as automatic fine tuning waste gas valve, turbine speed, steam water-levels; Changes in process parameters that real-time monitoring grog burns till with guarantee process environments that grog is produced scope in, make the generated energy maximization.

Claims (1)

1. cement clinker production and cogeneration self-adaptation coordinated control system comprise clinker production line DCS system, cogeneration DCS system, blind spot indication mechanism, grog processing quality analytic system, it is characterized in that each system inserts same EPA.

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