CN201787823U - Heat-power balancing device for sintering waste heat generating system - Google Patents

Heat-power balancing device for sintering waste heat generating system Download PDF

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Publication number
CN201787823U
CN201787823U CN2010205056335U CN201020505633U CN201787823U CN 201787823 U CN201787823 U CN 201787823U CN 2010205056335 U CN2010205056335 U CN 2010205056335U CN 201020505633 U CN201020505633 U CN 201020505633U CN 201787823 U CN201787823 U CN 201787823U
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China
Prior art keywords
waste heat
gas
hot blast
heat generating
blast main
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Expired - Lifetime
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CN2010205056335U
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Chinese (zh)
Inventor
秦爱虎
严俊
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LIANYUNGANG PAIER TECHNOLOGY DEVELOPMENT CO LTD
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LIANYUNGANG PAIER TECHNOLOGY DEVELOPMENT CO LTD
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]

Abstract

The utility model relates to a heat-power balancing device for a sintering waste heat generating system, which is characterized by inclusion of a gas-fired furnace, a main hot-wind pipeline and a PLC ( Programmable Logic Controller); a gas delivery pipeline and a combustion-supporting wind delivery pipeline are connected on a combustor of the gas-fired furnace; the main hot-wind pipeline is connected at the upper part of the gas-fired furnace via a chimney flue; an inlet end of the main hot-wind pipeline is connected with a wind outlet of a sinter-circle-cooling machine, and an outlet end of the main hot-wind pipeline is connected with a waste heat boiler; and an inlet end of the combustion-supporting wind delivery pipeline is also connected with the wind outlet of the sinter-circle-cooling machine. The heat-power balancing device provided by the utility model has a more reasonable structure, convenience in maintenance, and benefit to a power station when being used without affecting the operation of the power station if not being used, so that the stable operation of a sintering waste heat power station is realized, the supplement to the gas quantity and the proper adjustment to the combustion-supporting air quantity can be realized, and a new utilizing way for extra gas with low heat value is found.

Description

Sintering waste heat generating thermodynamic equilibrium device
Technical field
The utility model relates to a kind of auxiliary equipment of sintering waste heat generating system, particularly a kind of sintering waste heat generating thermodynamic equilibrium device.
Background technology
In iron and steel enterprise, the sintering circuit energy consumption is only second to the ironmaking operation, accounts for 9%~12% of total energy consumption, and energy-saving potential is very big.Sintering waste heat generating is a power-saving technology that the sintered discharge gas residual heat resources is changed into electric power.This technology does not produce extra waste gas, waste residue, dust and other pernicious gas, can effectively improve the efficiency of energy utilization of sintering circuit, the hot blast waste heat recovery that average sintering deposit per ton the produces 20kWh that to generate electricity, amount to a ton steel comprehensive energy consumption and can reduce about 8 kilograms of standard coals, thereby promote iron and steel enterprise to realize energy-saving and cost-reducing target.
The sintering waste heat generating unit is divided into four kinds by the waste heat boiler form in the prior art, that is: single cogeneration technology, two pressure cogeneration technology, flash distillation cogeneration technology and afterburning cogeneration technology of pressing.But sintering waste heat generating unit operation efficient is not high at present.The sintering waste heat generating unit all has strict requirement to hot air flow and temperature.In the actual motion, hot air flow and temperature are subjected to all multifactor influences such as fluctuation of instrument size and operating condition, environment temperature and humidity, organization of production and technology adjustment, the market demand.Cause the sintering therrmodynamic system very unstable; EGT fluctuation reaches sometimes ± more than 100 ℃; the direct result that causes is that the fluctuation of main steam temperature exceeds standard; the running parameter of afterheat generating system frequently changes; the pressure of output, temperature, flow also change thereupon; the operational efficiency of generating set is not high, sometimes even be forced to frequent shutdown.Not only reduced the technical-economic index of this system, but also the security of serious threat steam turbine, stability and life-span.
Summary of the invention
Technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of structure is more reasonable, improve the sintering operating mode stability and sintering waste heat generating thermodynamic equilibrium device easy to maintenance are provided.
Technical problem to be solved in the utility model is to realize by following technical scheme.The utility model is a kind of sintering waste heat generating thermodynamic equilibrium device, be characterized in: it comprises gas fired furnace, hot blast main road and PLC Programmable Logic Controller (can select Siemens S7-300 for use), be connected with gas conveying tube road and combustion air transfer pipeline on the burner of gas fired furnace, the top of gas fired furnace is connected with the hot blast main road by flue, the arrival end on hot blast main road is connected with the air outlet of the cold machine of sintered ring, the port of export is connected with waste heat boiler, and the arrival end of combustion air transfer pipeline also is connected with the air outlet of the cold machine of sintered ring; On the hot blast main road, be provided with the hot air flow meter, electric control valve and the thermocouple that are connected with the PLC Programmable Logic Controller by holding wire; On the body of heater of gas fired furnace, also be provided with the sensor and the control valve that are connected with the PLC Programmable Logic Controller by holding wire.
Technical problem to be solved in the utility model can also further realize by following technical scheme.Above-described sintering waste heat generating thermodynamic equilibrium device is characterized in: described flue tilts to be connected on the hot blast main road towards hot blast main way outlet extreme direction, and flue and hot blast main road angulation are 105 °~165 °.
Technical problem to be solved in the utility model can also further realize by following technical scheme.Above-described sintering waste heat generating thermodynamic equilibrium device is characterized in: adopt the elastic fire resisting material connector to be connected between described flue and the hot blast main road.
Technical problem to be solved in the utility model can also further realize by following technical scheme.Above-described sintering waste heat generating thermodynamic equilibrium device is characterized in: described combustion air transfer pipeline is provided with electric control valve, temperature thermocouple, Pressure gauge, mass air flow sensor, pressure switch and the pressure transmitter that is connected with the PLC Programmable Logic Controller by holding wire.
Technical problem to be solved in the utility model can also further realize by following technical scheme.Above-described sintering waste heat generating thermodynamic equilibrium device is characterized in: also be connected with the atmosphere bypass valve on the described combustion air transfer pipeline.Like this, can from atmosphere, get the part air as required as adjusting.
Technical problem to be solved in the utility model can also further realize by following technical scheme.Above-described sintering waste heat generating thermodynamic equilibrium device is characterized in: described gas conveying tube road is provided with control valve, Pressure gauge, gas flow meter, temperature thermocouple, temperature transmitter and the control valve that is connected with the PLC Programmable Logic Controller by holding wire.
Behind the plug-in the utility model device of sintering waste heat generating system, the operation in power station no longer is subjected to sintering operating mode instability or hot blast fluctuation of operating conditions too much influence, makes full use of steel plant's low-heat value gas more than needed, obtains the effect of achieving many things at one stroke.The utility model device conduct independently system is docked with electric power station system, during startup, promptly incorporates power station control system automatically into, plays the effect of steady heat wind flow and temperature; When stopping, deviating from from electric power station system automatically, the power station is by former technological process operation, and is unaffected.The utility model has all kept original afterheat generating system, hang over from the sinter cooler to the waste heat boiler it with this device is outer, to enter the hot air flow of waste heat boiler and temperature as final controlling element, its fluctuation is controlled in the minimum scope, it adopts the PLC Programmable Logic Controller to carry out multiple automatic control, and can effectively integrate with power station control system, finally guarantee the stable operation in power station.
Compared with prior art, the utility model and further design thereof have the following advantages:
It has realized the stable of sintering waste heat generating power station the first.The temperature that enters the mixing hot blast of waste heat boiler is effectively controlled, temperature fluctuation range can be controlled in ± 5 ℃ in.The hot blast total amount that enters waste heat boiler can accurately be controlled, and its total amount fluctuation range can be controlled in 5%.
It two is the timely adjustments that can realize afterburning coal gas amount and combustion-supporting air quantity.The temperature of coal gas/combustion air, pressure, flow can carry out the detection of dynamic analysis, are handled by control system again.
It three is that its structure is more reasonable, easy to maintenance, with then being of value to the power station, stopping and does not influence the power station operation.
It four is for low-heat value gas more than needed finds the new approach that utilizes, and small investment.As long as the not oepration at full load of sintering waste heat power station, and there is low-heat value gas more than needed in steel mill, do not influencing under the situation that any side produces investment that need only be few and very short interior promptly just can the realization of duration.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
The specific embodiment
Following with reference to accompanying drawing, further describe concrete technical scheme of the present utility model, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
Embodiment 1.With reference to Fig. 1.A kind of sintering waste heat generating thermodynamic equilibrium device, it is characterized in that: it comprises gas fired furnace 1, hot blast main road 6 and PLC Programmable Logic Controller, be connected with gas conveying tube road 3 and combustion air transfer pipeline 4 on the burner 2 of gas fired furnace 1, the top of gas fired furnace 1 is connected with hot blast main road 6 by flue 7, the arrival end on hot blast main road 6 is connected with the air outlet of the cold machine 5 of sintered ring, the port of export is connected with waste heat boiler 8, and the arrival end of combustion air transfer pipeline 4 also is connected with the air outlet of the cold machine 5 of sintered ring; On hot blast main road 6, be provided with the hot air flow meter, electric control valve and the thermocouple that are connected with the PLC Programmable Logic Controller by holding wire; On the body of heater of gas fired furnace 1, also be provided with the sensor and the control valve that are connected with the PLC Programmable Logic Controller by holding wire.
Embodiment 2.In the embodiment 1 described sintering waste heat generating thermodynamic equilibrium device: 6 port of export directions tilt to be connected on the hot blast main road 6 described flue 7 towards the hot blast main road, and flue 7 is 105 °~165 ° with hot blast main road 6 angulations.
Embodiment 3.In the embodiment 1 described sintering waste heat generating thermodynamic equilibrium device: adopt the elastic fire resisting material connector to be connected between described flue 7 and the hot blast main road 6.
Embodiment 4.In the embodiment 1 described sintering waste heat generating thermodynamic equilibrium device: described combustion air transfer pipeline 4 is provided with electric control valve, temperature thermocouple, Pressure gauge, mass air flow sensor, pressure switch and the pressure transmitter that is connected with the PLC Programmable Logic Controller by holding wire.
Embodiment 5.In embodiment 1 or the 4 described sintering waste heat generating thermodynamic equilibrium devices: also be connected with the atmosphere bypass valve on the described combustion air transfer pipeline 4.
Embodiment 6.Embodiment 1 described sintering waste heat generating thermodynamic equilibrium device: described gas conveying tube road 3 is provided with control valve, Pressure gauge, gas flow meter, temperature thermocouple, temperature transmitter and the control valve that is connected with the PLC Programmable Logic Controller by holding wire.

Claims (6)

1. sintering waste heat generating thermodynamic equilibrium device, it is characterized in that: it comprises gas fired furnace, hot blast main road and PLC Programmable Logic Controller, be connected with gas conveying tube road and combustion air transfer pipeline on the burner of gas fired furnace, the top of gas fired furnace is connected with the hot blast main road by flue, the arrival end on hot blast main road is connected with the air outlet of the cold machine of sintered ring, the port of export is connected with waste heat boiler, and the arrival end of combustion air transfer pipeline also is connected with the air outlet of the cold machine of sintered ring; On the hot blast main road, be provided with the hot air flow meter, electric control valve and the thermocouple that are connected with the PLC Programmable Logic Controller by holding wire; On the body of heater of gas fired furnace, also be provided with the sensor and the control valve that are connected with the PLC Programmable Logic Controller by holding wire.
2. sintering waste heat generating thermodynamic equilibrium device according to claim 1 is characterized in that: described flue tilts to be connected on the hot blast main road towards hot blast main way outlet extreme direction, and flue and hot blast main road angulation are 105 °~165 °.
3. sintering waste heat generating thermodynamic equilibrium device according to claim 1 and 2 is characterized in that: adopt the elastic fire resisting material connector to be connected between described flue and the hot blast main road.
4. sintering waste heat generating thermodynamic equilibrium device according to claim 1 is characterized in that: described combustion air transfer pipeline is provided with electric control valve, temperature thermocouple, Pressure gauge, mass air flow sensor, pressure switch and the pressure transmitter that is connected with the PLC Programmable Logic Controller by holding wire.
5. according to claim 1 or 4 described sintering waste heat generating thermodynamic equilibrium devices, it is characterized in that: also be connected with the atmosphere bypass valve on the described combustion air transfer pipeline.
6. sintering waste heat generating thermodynamic equilibrium device according to claim 1 is characterized in that: described gas conveying tube road is provided with control valve, Pressure gauge, gas flow meter, temperature thermocouple, temperature transmitter and the control valve that is connected with the PLC Programmable Logic Controller by holding wire.
CN2010205056335U 2010-08-26 2010-08-26 Heat-power balancing device for sintering waste heat generating system Expired - Lifetime CN201787823U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102385356A (en) * 2011-07-08 2012-03-21 中钢集团鞍山热能研究院有限公司 Optimizing control method for sintering waste heat power generation system
CN102538489A (en) * 2011-12-31 2012-07-04 浙江西子联合工程有限公司 Afterheat utilization flue after-burning device and after-burning method thereof
CN102563858A (en) * 2012-01-13 2012-07-11 云南泛亚能源科技有限公司 Complementary combustion device for low temperature waste heat power generation
CN102589305A (en) * 2012-02-24 2012-07-18 思安新能源股份有限公司 Sintering waste heat generating system
CN106678865A (en) * 2016-11-10 2017-05-17 安徽皖拓自动化有限公司 Novel combustion control system of fire resistance testing for valves
CN108679932A (en) * 2018-07-19 2018-10-19 上海力顺燃机科技有限公司 Using the jet drying system and jet drying method of combustion gas tail gas
CN108854123A (en) * 2018-07-19 2018-11-23 上海力顺燃机科技有限公司 Combustion gas tail gas and high-temperature flue gas mixing jetting drying system and jet drying method
CN114234198A (en) * 2021-12-17 2022-03-25 刘春良 Special innocent treatment equipment of medical waste

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102385356A (en) * 2011-07-08 2012-03-21 中钢集团鞍山热能研究院有限公司 Optimizing control method for sintering waste heat power generation system
CN102385356B (en) * 2011-07-08 2013-10-30 中钢集团鞍山热能研究院有限公司 Optimizing control method for sintering waste heat power generation system
CN102538489A (en) * 2011-12-31 2012-07-04 浙江西子联合工程有限公司 Afterheat utilization flue after-burning device and after-burning method thereof
CN102563858A (en) * 2012-01-13 2012-07-11 云南泛亚能源科技有限公司 Complementary combustion device for low temperature waste heat power generation
CN102589305A (en) * 2012-02-24 2012-07-18 思安新能源股份有限公司 Sintering waste heat generating system
CN102589305B (en) * 2012-02-24 2015-04-15 思安新能源股份有限公司 Sintering waste heat generating system
CN106678865A (en) * 2016-11-10 2017-05-17 安徽皖拓自动化有限公司 Novel combustion control system of fire resistance testing for valves
CN108679932A (en) * 2018-07-19 2018-10-19 上海力顺燃机科技有限公司 Using the jet drying system and jet drying method of combustion gas tail gas
CN108854123A (en) * 2018-07-19 2018-11-23 上海力顺燃机科技有限公司 Combustion gas tail gas and high-temperature flue gas mixing jetting drying system and jet drying method
CN114234198A (en) * 2021-12-17 2022-03-25 刘春良 Special innocent treatment equipment of medical waste
CN114234198B (en) * 2021-12-17 2023-11-17 明喆集团股份有限公司 Special innocent treatment equipment of medical waste

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Jiangsu Paier Iron & Steel Energy-saving Technology Co., Ltd.

Assignor: Lianyungang Paier Technology Development Co.,Ltd.

Contract record no.: 2012320001039

Denomination of utility model: Heat-power balancing device for sintering waste heat generating system

Granted publication date: 20110406

License type: Exclusive License

Record date: 20121226

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
EC01 Cancellation of recordation of patent licensing contract

Assignee: Jiangsu Paier Iron & Steel Energy-saving Technology Co., Ltd.

Assignor: Lianyungang Paier Technology Development Co.,Ltd.

Contract record no.: 2012320001039

Date of cancellation: 20131204

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110406