CN212838090U - Gas turbine combined heat and power device for drying titanium dioxide - Google Patents

Gas turbine combined heat and power device for drying titanium dioxide Download PDF

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Publication number
CN212838090U
CN212838090U CN202020662026.3U CN202020662026U CN212838090U CN 212838090 U CN212838090 U CN 212838090U CN 202020662026 U CN202020662026 U CN 202020662026U CN 212838090 U CN212838090 U CN 212838090U
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gas turbine
titanium dioxide
drying
valve
chimney
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徐毅
刘峰
邱福生
刘志杰
孙绍华
魏秀秀
朱家兴
王翱岸
于洪波
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Dalian Oppner Turbine Power Technology Co ltd
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Dalian Oppner Turbine Power Technology 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

A gas turbine combined heat and power device for drying titanium dioxide belongs to the technical field of titanium dioxide processing and production. Electric energy generated by the gas turbine is transmitted to the busbar through the grid-connected cabinet; starting the gas turbine, closing the regulating valve, fully opening the shutoff valve, and exhausting flue gas exhausted by the gas turbine through the shutoff valve and the bypass chimney; after the gas turbine is driven to rotate, the fan is started, the drying equipment starts feeding, the air distribution device is opened, the shutoff valve is gradually closed, the regulating valve is gradually opened, the feeding amount of the wet titanium dioxide material is gradually increased in the dryer, the load of the gas turbine is gradually increased, the afterburning device is started, the wet titanium dioxide material is changed into powder state and is filtered, captured and recycled by the bag-type dust collector, the flue gas is exhausted by the fan and the chimney, the wet titanium dioxide material is dried to a dry material with reasonable moisture content, and the ideal yield is achieved. The combination of titanium dioxide drying and a gas turbine realizes the gradient utilization of energy, and simultaneously meets the multi-target requirements of energy conservation, environmental protection and the like.

Description

Gas turbine combined heat and power device for drying titanium dioxide
Technical Field
The patent of the utility model belongs to the technical field of titanium white powder processing production, concretely relates to be applied to dry energy step utilization system who combines gas turbine combined heat and power to supply of titanium white powder production technology.
Background
At present, China is in an industrial accelerated development stage and is influenced by economic situation, the market of titanium dioxide shows a continuous good situation, but is influenced by environmental friendliness and low operating rate of small enterprises. Energy-saving and environment-friendly improvement on the titanium dioxide industry is imminent.
Compared with the traditional titanium dioxide drying system with single-function hot blast stove air distribution, the gas turbine is switched into a more complex energy conversion and utilization system. The system is not simple superposition of various energy supply and utilization devices, but is a complex system which organically combines an electric power system and a thermodynamic system through system integration to simultaneously meet multi-target requirements such as energy and environmental performance. The heat utilization part in the system is relatively large, and the optimization of the heat utilization system is critical and urgent.
In the drying process of the titanium dioxide, the influence of the feeding amount, the water content, the gas condition, the environmental factors and the like is caused, the inlet temperature, the air inflow and the like of hot flue gas for drying need to respond to the change in time, and the requirements for ensuring the quality of the titanium dioxide and the stability and the adjustability of a system are provided.
At present, the domestic titanium dioxide drying heat source is mainly from a hot blast stove, natural gas, coal and fuel oil are combusted in the hot blast stove to generate high-temperature flue gas, cold air distribution and afterburning are carried out according to the requirements of subsequent processes on heat and flue gas temperature, and the large amount of cold air distribution leads to low system heat efficiency and poor economic benefit; the single air distribution mode of sucking cold air by the negative pressure of the system is simple and lagged, and the adjustability is poor; the power source all depends on the municipal power grid, the dependence is large, and the capacity of being interfered by the outside world is weak.
Disclosure of Invention
The utility model aims at providing a realize that energy step utilizes and is used for dry gas turbine cogeneration device of titanium white powder.
The technical solution of the utility model is that,
a gas turbine combined heat and power device for drying titanium dioxide comprises a drying device 4, a bag-type dust collector 5, a fan 6 and a chimney 7 which are sequentially connected, and further comprises a gas turbine 1, a grid-connected cabinet 8, a shutoff valve 9, a bypass chimney 10 and an adjusting valve 2; wherein the content of the first and second substances,
a. a generator set of the gas turbine 1 is connected to a busbar 12 through a grid-connected cabinet 8; the electric power of the gas turbine 1 is 0-10000kW, and the grid-connected voltage is 400V-13.8 kV;
b. the flue gas outlet of the generator set of the gas turbine 1 passes through a pipeline, one path is connected with a drying device 4, a fan 6 and a chimney 7 through an adjusting valve 2, and the other path is connected with a bypass chimney 10 through a shutoff valve 9; the exhaust temperature of the gas turbine 1 is 200 ℃ plus 600 ℃, the thermal power is 1000 ℃ plus 23000kW, and the flow cross section of the regulating valve 2 is 0.1m2-80m2The opening degree is 0-100%, the thermal power of the drying equipment 4 is 1000-53000kW, the feeding amount is 0-30t/h, and the filtering air volume of the bag-type dust collector 5 is 10000-150000Nm3Perh, 6 air volume 10000-150000Nm of fan3H, pumping 20-200Pa in a chimney 7, and closing a valve 9 for circulationCross-sectional area of 0.1m2-80m2The opening degree is 0-100%;
the adjusting valve 2 is a double-blade type smoke baffle door,
the regulating valve 2 is a butterfly valve,
the shut-off valve 9 is a double-shutter type flue gas baffle door,
the shut-off valve 9 is a butterfly valve,
the drying device 4 is a flash dryer,
the drying device 4 is a spray dryer,
the drying device 4 is a belt dryer,
the drying equipment 4 is a rotary kiln;
the number of the drying equipment 4 is 1-5;
1-5 bag dust collectors;
1-5 fans are arranged;
1-5 chimneys 7;
an air distribution device 3 connected by a pipeline is arranged on the pipeline between the flue gas outlet of the regulating valve 2 and the flue gas inlet of the drying equipment 4, and the flow cross section area of the air distribution device 3 is 0.1m2-6m2The opening degree is 0-100%;
the air distribution device 3 is a double-blade baffle door,
the air distribution device 3 is a butterfly valve,
a post-combustion device 11 connected by a pipeline is arranged on the pipeline between the flue gas outlet of the regulating valve 2 and the flue gas inlet of the drying equipment 4, and the post-combustion thermal power of the post-combustion device 11 is 0-30000 kW;
the adjusting valve 2 is a double-louver type baffle door, the air distribution device 3 is a double-louver type baffle door, and the shutoff valve 9 is a double-louver type baffle door;
the drying device 4 is a flash dryer;
the utility model discloses the beneficial effect who reaches is:
1. energy cascade utilization: high-grade heat energy is converted into electric energy, and low-grade heat energy is used for drying the titanium dioxide process, so that the energy utilization is reasonable;
2. the heat utilization rate is high: the system exhaust gas temperature can be controlled at a lower temperature, and the system thermal efficiency is high;
3. excess air re-consumption: the feeding of cold air is reduced, so that excessive air is prevented from carrying away a large amount of heat energy, and the heat efficiency of the system is further improved;
4. the adjustability is strong: the system is more stable and energy-saving by adjusting the load of the gas turbine, the heat load of the afterburning device and the opening of the fine-adjustment air distribution device and adjusting the heat supply quantity and the flue gas temperature of the system;
5. the electric energy is produced and used by self: the electric power operation cost in the peak-to-average period is saved, and the stable operation of part of production processes without external interference can be ensured.
Drawings
Figure 1 is a schematic structural diagram of the present invention,
in the figure: 1. the system comprises a gas turbine, 2 an adjusting valve, 3 an air distribution device, 4 drying equipment, 5 a bag-type dust collector, 6 a fan, 7 a chimney, 8 a grid-connected cabinet, 9 a shut-off valve, 10 a bypass chimney, 11 a afterburning device and 12 a busbar.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
A gas turbine combined heat and power device for drying titanium dioxide comprises a gas turbine 1, a grid-connected cabinet 8, a shut-off valve 9, a bypass chimney 10, an adjusting valve 2, an air distribution device 3, a afterburning device 11, drying equipment 4, a bag-type dust collector 5, a fan 6 and a chimney 7, wherein the drying equipment 4 is a flash evaporation dryer, the adjusting valve 2 and the shut-off valve 9 are double-shutter type flue gas damper doors, and the air distribution device 3 is a double-shutter type damper door;
a. a generator set of the gas turbine 1 is connected to a busbar 12 through a grid-connected cabinet 8; the electric power of the gas turbine 1 is 2000kW, and the grid-connected voltage is 10.8 kV;
b. the flue gas outlet of the generator set of the gas turbine 1 passes through a pipeline, one path is connected with a drying device 4, a fan 6 and a chimney 7 through an adjusting valve 2, and the other path is connected with a bypass chimney 10 through a shutoff valve 9; the exhaust gas temperature of the gas turbine 1 is 600 ℃, the thermal power is 5000kW, and the flow cross section area of the regulating valve 2 is 1m2The opening degree is 70%;
the thermal power of the drying equipment 4 is 10000kW, the feeding amount is 16t/h,the filtering air quantity of the bag-type dust collector 5 is 60000Nm3H, 6 air volume of the fan 60000Nm3H, the draft of a chimney 7 is 70Pa, the flow cross section area of a shut-off valve 9 is 1m2The opening degree is 70%;
an air distribution device 3 connected by a pipeline is arranged on the pipeline between the flue gas outlet of the regulating valve 2 and the flue gas inlet of the drying equipment 4, and the flow cross section area of the air distribution device 3 is 0.5m2The opening degree is 60 percent;
a post-combustion device 11 connected by a pipeline is arranged on the pipeline between the flue gas outlet of the regulating valve 2 and the flue gas inlet of the drying equipment 4, and the post-combustion thermal power of the post-combustion device 11 is 5000 kW;
the method of using the gas turbine combined heat and power device for drying titanium dioxide is that,
a. the regulating valve 2 is closed, the shutoff valve 9 is fully opened, the gas turbine 1 is started, the generator and the service frequency are in the same period, the switch cabinet 8 is closed, 2000kW electric energy generated by the generator of the gas turbine 1 is directly transmitted to the busbar 12, and the flue gas discharged by the gas turbine 1 is evacuated through the shutoff valve 9 and the bypass chimney 10;
b. after the gas turbine 1 is at a speed, opening the air distribution device 3, starting the fan 6, starting to add the wet titanium dioxide material with the water content of 40% into the drying equipment 4, gradually closing and shutting the valve 9 to be fully closed, gradually opening the regulating valve 2 to be fully opened, gradually increasing the feeding amount of the drying equipment 4, and gradually increasing the load of the gas turbine 1; the water in the titanium dioxide is evaporated by hot flue gas, the wet titanium dioxide material is changed into powder and flows to a bag-type dust collector 5 along with air flow, the dry titanium dioxide material is filtered and captured, and the flue gas is exhausted by a fan 6 and a chimney 7; the air temperature after mixing determines the economy and energy-saving performance of the drying process, the temperature in front of the bag-type dust collector 5 is used for feedback adjustment of the power of the gas turbine 1 and the frequency of the fan 6 when the yield of the titanium dioxide changes, and meanwhile, the 150 ℃ high-temperature limit is set to protect the bag-type dust collector 5 from being burnt out due to overheating of the smoke temperature. When the coordinated linkage stable operation of the gas turbine 1, the fan 6 and the titanium dioxide feeding is realized, the output power of the gas turbine 1 is 2000kW, the feeding amount of the drying equipment 4 is 16t/h, the temperature of the drying flue gas at the inlet of the drying equipment 4 is 550 ℃, the temperature of the flue gas entering the bag-type dust remover 5 after the titanium dioxide is dried is 100 ℃, and the air volume of the fan 6 is equal to60000Nm3H, when the suction force of a chimney 7 is 70Pa and the exhaust gas of the gas turbine 1 is less than 5000kW, starting the afterburning device 11 to provide energy for supplying the afterburning heated exhaust gas, wherein the afterburning thermal power of the afterburning device 11 is 5000 kW; the yield of the titanium dioxide dry material is 10 t/h.

Claims (5)

1. A gas turbine combined heat and power device for drying titanium dioxide comprises a drying device (4), a bag-type dust collector (5), a fan (6) and a chimney (7) which are sequentially connected, and is characterized by further comprising a gas turbine (1), a grid-connected cabinet (8), a shutoff valve (9), a bypass chimney (10) and an adjusting valve (2); wherein the content of the first and second substances,
a. a generator set of the gas turbine (1) is connected to the busbar (12) through the grid-connected cabinet (8); the electric power of the gas turbine (1) is 0-10000kW, and the grid-connected voltage is 400V-13.8 kV;
b. a flue gas outlet of a generator set of the gas turbine (1) is connected with a drying device (4), a fan (6) and a chimney (7) through a regulating valve (2) through a pipeline, and the other path is connected with a bypass chimney (10) through a shut-off valve (9); the exhaust temperature of the gas turbine (1) is 200 ℃ plus 600 ℃, the thermal power is 1000 ℃ plus 23000kW, and the flow cross section of the regulating valve (2) is 0.1m2-80m2The opening degree is 0-100%, the thermal power of the drying equipment (4) is 1000-53000kW, the feeding amount is 0-30t/h, and the filtering air volume of the bag-type dust collector (5) is 10000-150000Nm310000-150000Nm of air volume of the fan (6)3H, the draft of the chimney (7) is 20-200Pa, and the flow cross section of the shut-off valve (9) is 0.1m2-80m2The opening degree is 0-100%.
2. The combined heat and power device for the gas turbine for drying titanium dioxide according to claim 1, wherein an air distribution device (3) connected by a pipeline is arranged on the pipeline between the flue gas outlet of the regulating valve (2) and the flue gas inlet of the drying equipment (4), and the flow cross-sectional area of the air distribution device (3) is 0.1m2-6m2The opening degree is 0-100%.
3. The gas turbine combined heat and power device for drying titanium dioxide as recited in claim 1, wherein a post-combustion device (11) connected by a pipeline is disposed on the pipeline between the flue gas outlet of the regulating valve (2) and the flue gas inlet of the drying equipment (4), and the post-combustion thermal power of the post-combustion device (11) is 0-30000 kW.
4. The co-generation device for the gas turbine for drying titanium dioxide according to claim 1, 2 or 3, characterized in that the regulating valve (2) is a double-louver type baffle door, the air distribution device (3) is a double-louver type baffle door, and the shut-off valve (9) is a double-louver type baffle door.
5. A gas turbine cogeneration unit for drying titanium dioxide according to claim 1, 2 or 3, characterised in that the drying equipment (4) is a flash dryer.
CN202020662026.3U 2020-04-27 2020-04-27 Gas turbine combined heat and power device for drying titanium dioxide Active CN212838090U (en)

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Application Number Priority Date Filing Date Title
CN202020662026.3U CN212838090U (en) 2020-04-27 2020-04-27 Gas turbine combined heat and power device for drying titanium dioxide

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Application Number Priority Date Filing Date Title
CN202020662026.3U CN212838090U (en) 2020-04-27 2020-04-27 Gas turbine combined heat and power device for drying titanium dioxide

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111595143A (en) * 2020-04-27 2020-08-28 大连欧谱纳透平动力科技有限公司 Gas turbine combined heat and power system and method for drying titanium dioxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111595143A (en) * 2020-04-27 2020-08-28 大连欧谱纳透平动力科技有限公司 Gas turbine combined heat and power system and method for drying titanium dioxide

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