CN201614380U - Control device for utilizing waste blast furnace gas of steelmaking lime kiln - Google Patents
Control device for utilizing waste blast furnace gas of steelmaking lime kiln Download PDFInfo
- Publication number
- CN201614380U CN201614380U CN200920181637XU CN200920181637U CN201614380U CN 201614380 U CN201614380 U CN 201614380U CN 200920181637X U CN200920181637X U CN 200920181637XU CN 200920181637 U CN200920181637 U CN 200920181637U CN 201614380 U CN201614380 U CN 201614380U
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- gas
- blast furnace
- differential pressure
- pressure transmitter
- furnace gas
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model relates to a control device for utilizing waste blast furnace gas of a steelmaking lime kiln. The control device comprises a pressure transmitter, differential pressure transmitters, electric adjusting butterfly valves, a temperature transducer, a gas calorific value instrument, and a programmable logic controller (PLC). A blast furnace gas pipeline is equipped with two electric adjusting butterfly valves and a differential pressure transmitter, wherein the differential pressure transmitter is mounted on two sides of the electric adjusting butterfly valve at the gas outlet; each coke oven gas pipeline is equipped with two electric adjusting butterfly valves and a differential pressure transmitter, wherein the differential pressure transmitter is mounted on two sides of the electric adjusting butterfly valve at the gas outlet; the pressure transmitter and the temperature sensor are arranged in the position of the outlet of mixed blast furnace gas and coke oven gas; and the gas calorific value instrument is also arranged at the outlet of the mixed gas. The utility model can achieve the effects that waste blast furnace gas with fixed heat energy and fixed heat quantity can be utilized during the production process of the lime kiln, and the energy with the same combustion heat value is saved.
Description
Technical field:
The utility model relates to a kind of steel-making limestone kiln blast furnace coal exhaust gas utilization control device, exactly, is the steel-making limestone kiln blast furnace coal exhaust gas utilization control device that a kind of blast furnace gas waste gas and coke-oven gas mix a kind of control method of utilizing.
Background technology:
The blast furnace gas waste gas that produces in the blast furnace ironmaking process because it contains toxic gas carbon monoxide etc., can not directly enter atmosphere, and some enterprise directly diffuses usually, causes environmental pollution serious, energy dissipation.Come out and make steel required large quantities of lime mass production from the limestone kiln, their required lime is produced through the heating of Wingdale, therefore adopt the heating fuel of the mixed gas of blast furnace gas and coke-oven gas, produce the used lime of steel-making as the limestone kiln.The mixed gas calorific value instability that traditional mixing control method produces, and when the pressure of blast furnace gas and coke-oven gas and calorific value changed, the calorific value of mixed gas can not and then change, and makes troubles to the production of lime, can not produce fine lime.
Summary of the invention:
The utility model comprises pressure unit, differential pressure transmitter, motorized adjustment dish valve, temperature transmitter, caloric power of gas instrument and PLC controller thereof, its blast furnace gas pipeline is equipped with two motorized adjustment butterfly valves and differential pressure transmitter, wherein differential pressure transmitter is contained in the both sides of the motorized adjustment butterfly of air outlet, coke oven gas pipe is equipped with two motorized adjustment butterfly valves and differential pressure transmitter respectively, wherein differential pressure transmitter is contained in the both sides of the motorized adjustment butterfly of air outlet, pressure unit is equipped with in the exit of the mixed gas of blast furnace gas and coke-oven gas, temperature sensor, the caloric power of gas instrument also is equipped with in the exit of mixed gas.
Technical problem to be solved in the utility model is to provide the mixed gas of constant pressure, constant calorific value proportioning, and the pressure and the calorific value that can adapt to blast furnace gas change, and regulate automatically.It mainly is the process control method that proposes how to utilize in the combustion processes of a kind of limestone kiln the utilization of blast furnace gas waste gas circulation, adopting in real time, monitoring limestone kiln calorific value changes to regulate blast furnace gas waste gas, on the basis of limestone kiln lime sintering gaseous-pressure dynamic monitoring, regulate the blast furnace gas pressurised exhaust gas, regulate to realize that mixed gas calorific value is regulated with pressure, it is energy-conservation to reach blast furnace gas exhaust gas utilization and the fuel value deciding heat energy in the production process of limestone kiln, decide heat.
Description of drawings:
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is blast furnace gas and mixed pipeline and the instrument distribution plan of coke-oven gas
Among the figure: the 1-blast furnace gas; 2,3,7,8-motorized adjustment butterfly valve; The 4-gas line; 5,9-differential pressure transmitter; The 6-coke-oven gas; The 10-pressure unit; The 11-temperature sensor; 12-caloric power of gas instrument; 13-mixes coal gas.
Fig. 2: mixed gas pressure constant system functional-block diagram.
101-mixes the gas pressure set(ting)value; The 102-comparison module; The 103-deviate; The 104-PID algorithm; 105-PID output; 106-electric butterfly valve topworks; 107-electric butterfly valve position sensor feedback; The 108-position feedback; The on-the-spot pressure of 109-; The 110-pressure transmitter; The 111-pressure unit; The on-the-spot press process value of 112-.
Fig. 3: blast furnace gas differential pressure value regulation system functional-block diagram.
201-blast furnace gas differential pressure value set(ting)value; The 202-comparison module; 203 deviates; The 204-PID algorithm; 205-PID output; 206-blast furnace gas electric butterfly valve topworks; 207-coke-oven gas electric butterfly valve topworks; 208-electric butterfly valve position transducer; 209-electric butterfly valve position feedback; The on-the-spot differential pressure of 210-; The 211-differential pressure pick-up; The 212-differential pressure transmitter; The on-the-spot differential pressure process values of 213-.
Fig. 4: mixed caloric power of gas regulation system functional-block diagram.
301-mixes the caloric power of gas set(ting)value; The 302-comparison module; 303 deviates; The 304-PID algorithm; 305-PID output; 306-coke-oven gas electric butterfly valve topworks; 307-electric butterfly valve position sensor feedback; The 308-position feedback; The on-the-spot mixed coal gas of 309-; 310-carbon monoxide and nitrogen standard gas; 311-carbonic acid gas and nitrogen standard gas; 312-hydrogen standard gas; 313-methane standard gas; 314-mixes gas sensor; 315-mixes the coal gas transmitter; On-the-spot mixed caloric power of gas process values.
Embodiment:
The utility model addresses the above problem by the following technical programs: as Fig. 1, the aperture of motorized adjustment butterfly valve 2 is adjusted according to the feedback of pressure unit 10, when detecting the pressure minimizing, the aperture of motorized adjustment butterfly valve 2 increases, when detecting pressure and become big, the aperture of motorized adjustment butterfly valve 2 reduces accordingly, and what keep-up pressure is constant.
When differential pressure transmitter 5 detects differential pressure value and becomes big, the aperture of motorized adjustment butterfly valve 3 increases, motorized adjustment butterfly valve 8 is also followed increase in proportion simultaneously, when differential pressure value diminishes, the aperture of motorized adjustment butterfly valve 3 is controlled it and is reduced, motorized adjustment butterfly valve 8 also and then reduces in proportion simultaneously, to keep the constant of differential pressure value.
The feedback quantity that detects by caloric power of gas instrument 12 when caloric value instrument detects calorific value and diminishes, increases the aperture of motorized adjustment butterfly valve 7 automatically, when caloric value instrument detects calorific value and becomes big, reduces motorized adjustment butterfly valve 7 automatically, reaches the constant of caloric power of gas.
The mixed gas regulating and controlling method of mixed gas pressure set(ting)value 101, constant calorific value proportioning, can regulate automatically according to the on-the-spot pressure 109 and the calorific value variation of blast furnace gas, by the adjusting of blast furnace gas differential pressure value set(ting)value 201, reach the pressure-controlling that blast furnace waste gas utilizes.The constant calorific value ratio requirement of mixed gas proposes the mixed gas calorific value control method, and blast furnace gas exhaust gas utilization and the combustion heat value of decide heat energy to reach the limestone kiln production process, deciding heat are energy-conservation.
The utility model is used for the lime production process in steelmaking process limestone kiln, and it relates to a kind of blast furnace gas waste gas and mixing utilizes control method with coke-oven gas.According to the pressure of coal gas waste gas and the characteristics of calorific value dynamic change, by pressure and calorific value real-time dynamic monitoring to limestone kiln combustion processes blast furnace gas waste gas, propose the mixed gas control Automatic adjustment method of a kind of mixed gas constant pressure, constant calorific value proportioning, blast furnace gas exhaust gas utilization and the combustion heat value of decide heat energy to reach the limestone kiln production process, deciding heat are energy-conservation.
Claims (1)
1. steel-making limestone kiln blast furnace coal exhaust gas utilization control device, comprise pressure unit, differential pressure transmitter, motorized adjustment dish valve, temperature transmitter, caloric power of gas instrument and PLC controller thereof, it is characterized in that: blast furnace gas (1) pipeline is equipped with two motorized adjustment butterfly valves (2), (3) and differential pressure transmitter (5), wherein differential pressure transmitter (5) is contained in the both sides of the motorized adjustment butterfly valve (3) of air outlet, coke-oven gas (6) pipeline is equipped with two motorized adjustment butterfly valves (7) respectively, (8) and differential pressure transmitter (9), wherein differential pressure transmitter (9) is contained in the both sides of the motorized adjustment butterfly valve (8) of air outlet, pressure unit (10) is equipped with in the exit of the mixed gas of blast furnace gas (1) and coke-oven gas (6), temperature sensor (11), the exit of mixed gas also are equipped with caloric power of gas instrument (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920181637XU CN201614380U (en) | 2009-12-09 | 2009-12-09 | Control device for utilizing waste blast furnace gas of steelmaking lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920181637XU CN201614380U (en) | 2009-12-09 | 2009-12-09 | Control device for utilizing waste blast furnace gas of steelmaking lime kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614380U true CN201614380U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920181637XU Expired - Fee Related CN201614380U (en) | 2009-12-09 | 2009-12-09 | Control device for utilizing waste blast furnace gas of steelmaking lime kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN201614380U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092187A (en) * | 2017-06-16 | 2017-08-25 | 河钢股份有限公司承德分公司 | A kind of temperature control equipment and temprature control method |
| CN109539812A (en) * | 2017-09-21 | 2019-03-29 | 南京梅山冶金发展有限公司 | A kind of sleeve kiln intelligent gas controlling device and control method |
| CN112462656A (en) * | 2020-11-19 | 2021-03-09 | 凤台县天宝建材有限责任公司 | Coal gangue resource comprehensive utilization system |
-
2009
- 2009-12-09 CN CN200920181637XU patent/CN201614380U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107092187A (en) * | 2017-06-16 | 2017-08-25 | 河钢股份有限公司承德分公司 | A kind of temperature control equipment and temprature control method |
| CN109539812A (en) * | 2017-09-21 | 2019-03-29 | 南京梅山冶金发展有限公司 | A kind of sleeve kiln intelligent gas controlling device and control method |
| CN112462656A (en) * | 2020-11-19 | 2021-03-09 | 凤台县天宝建材有限责任公司 | Coal gangue resource comprehensive utilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20141209 |
|
| EXPY | Termination of patent right or utility model |