CN203489522U - Processing system of waste heat and waste energy utilization of blast furnace cooling water - Google Patents

Processing system of waste heat and waste energy utilization of blast furnace cooling water Download PDF

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Publication number
CN203489522U
CN203489522U CN201320402012.8U CN201320402012U CN203489522U CN 203489522 U CN203489522 U CN 203489522U CN 201320402012 U CN201320402012 U CN 201320402012U CN 203489522 U CN203489522 U CN 203489522U
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water
blast
pump
communicated
cooling tower
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况国华
包向军
时朝昆
尚振杰
张冬海
杨崇岳
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BEIJING HUAHANG SHENGSHI ENERGY TECHNOLOGY Co Ltd
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BEIJING HUAHANG SHENGSHI ENERGY 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems
    • Y02B30/625Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration

Abstract

The utility model provides a processing system of waste heat and waste energy utilization of blast furnace cooling water. The main drain pipe of cooling water of a blast furnace cooling water apparatus is communicated with a water inlet of a water turbine. A water outlet of the water turbine is communicated with a cycling pool, and the water turbine is connected to a generator through transmission. The cycling pool is divided into two waterways. One waterway passes through the cooling tower water pump and then is communicated with the water inlet of a cooling tower, and the water outlet of the cooling tower passes through the cooling water pump and then is communicated with a water-supply main pipe of the blast furnace cooling water apparatus. The other waterway passes through a warm water pump and a heat pump evaporator, and then is also communicated with the water-supply main pipe of the blast furnace cooling water apparatus. The processing system of waste heat and waste energy utilization of blast furnace cooling water is advantageous in that waste energy and waste heat, carried by the blast furnace cooling water can be effectively recovered, and thereby substantial energy saving can be achieved; economic benefit is obvious and investment payoff period is short; with the processing system of the utility model, a cooling tower of the prior art can be partially or completely stopped, and thereby operation and maintenance expense can be greatly reduced; water can be saved, anticorrosion measures can be reduced, and environmental protection significance is high.

Description

The process system that a kind of blast-furnace cooled water residual heat and energy utilizes
Technical field
The utility model relates to energy and reclaims and utilize technical field, especially relates to the process system that a kind of blast-furnace cooled water residual heat and energy utilizes.
Background technology
The circulatory system of blast-furnace cooled water substantially all adopts and is directly disposed to circulating water pool and the cooling mode of cooling tower at present.
The effect of blast furnace cooling water is that the heat of deriving in State of Blast Furnace is taken away, and reduces the temperature of furnace lining, guarantees the complete of liner, maintains rational blast furnace design.Blast furnace different parts adopts the different types of cooling and operating procedure, guarantees the life-span of cupola well, body of heater.Requirement to the cooling water drainage-supply system of blast furnace, for assurance blast furnace can be produced continuously, blast furnace water drainage-supply system must safety, reliable, continuous.
Lower than the blast-furnace cooled waters of 35 ℃, by vibration means for main pipe for supplying water, enter each layer of water supply endless tube, each layer of endless tube supplies water to each group cooler respectively through each assembly hydrophone.Blast-furnace cooled water temperature after using is 40~45 ℃, by main sewer, is concentrated and is entered blast furnace below circulating water pool.Between main sewer and circulating water pool, there is the natural-drop of 5~18 meters.The mechanical energy that blast-furnace cooled water carries (kinetic energy and potential energy) is by directly emptying.
The blast-furnace cooled water of circulating water pool is through the pressurization of cooling tower water pump, sends into cooling tower and carries out coolingly, after temperature reduces, then sends into blast furnace cooler, to blast furnace, carries out cooling.The heat energy that cooling water carries is distributed to atmospheric environment with air.
In addition,, due to factors such as moisture evaporation, the water that wafts, blowdowns, cooling tower need to carry out moisturizing.For example, a 1080m3 blast furnace that cooling water circulation amount is 2100m3/h,, under normal circumstances, rate of water make-up is about the 2-4% of quantity of circulating water, i.e. 42-84m3/h, and the rate of water make-up of every day reaches 1008-2016 ton.
In traditional blast-furnace cooled water technological process, waste heat and complementary energy that main sewer blast-furnace cooled water out carries are directly disposed to surrounding environment, are not utilized effectively.
In addition, conventional process flow adopts cooling tower, is accompanied by a large amount of moisture losses in heat extraction process, not only causes the waste of resource, and has increased the weight of the generation of corrosion and scaling etc.Circulation needs long-term moisturizing and takes strict anti-corrosion measure, and maintenance cost is higher.
Utility model content
The purpose of this utility model is to design the process system that a kind of novel blast-furnace cooled water residual heat and energy utilizes, and addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
The process system that a kind of blast-furnace cooled water residual heat and energy utilizes, comprise blast-furnace cooled water device, circulating water pool, cooling tower water pump, cooling tower and cooling water pump, also comprise the hydraulic turbine, generator, warm water pump, evaporator with heat pump and heat pump, the main sewer of the cooling water of described blast-furnace cooled water device is communicated to the water inlet of the described hydraulic turbine, the delivery port of the described hydraulic turbine is communicated to described circulating water pool, and the described hydraulic turbine and described generator are in transmission connection;
Described circulating water pool separates two water routes, leads up to and is communicated to the water inlet of described cooling tower after described cooling tower water pump, and the delivery port of described cooling tower is communicated to the vibration means for main pipe for supplying water of described blast-furnace cooled water device after by described cooling water pump; Another road is successively by described warm water pump with by being also communicated to the vibration means for main pipe for supplying water of described blast-furnace cooled water device after the evaporator with heat pump in described heat pump.
Between described main sewer and the described hydraulic turbine, between described circulating water pool and described cooling tower water pump, between described circulating water pool and described warm water pump, between described cooling water pump and described vibration means for main pipe for supplying water and be equipped with valve on the pipeline between described evaporator with heat pump and described vibration means for main pipe for supplying water.
Described main sewer separated two water routes before the described hydraulic turbine, and a road is communicated to described circulating water pool successively after valve and the described hydraulic turbine, and another road is directly communicated to described circulating water pool after other valve.
Also comprise electric control gear, described valve is magnetic valve and is all electrically connected to described electric control gear.
The suction parameter of the described hydraulic turbine is,
Water temperature: 35~60 ℃;
Hydraulic pressure: 60kPa-1.0MPa;
The water yield: 200-3000t/h;
Water quality: suspension < 200mg/L.
Described heat pump is absorption heat pump, and its systematic parameter is,
Evaporator water temperature: 30~60 ℃;
Steam of generator temperature: 100~350 ℃;
Hot water backwater's temperature: 25~70 ℃;
High-temperature-hot-water temperature: 40~100 ℃.
The utility model relates to technology and the equipment of power generating by remain energy, low temperature exhaust heat recovery etc., relates in particular to and utilizes water for producing electric power and heat pump recovery waste heat Processes and apparatus.This know-why is kinetic energy, potential energy and the heat energy that utilizes blast-furnace cooled water to have in technique cooling procedure, adopts hydraulic generator unit and source pump, and the complementary energy producing in blast furnace cooling procedure and waste heat are fully reclaimed.This device systems mainly consists of By-pass control system, hydraulic turbine electric generator system, absorption type heat pump system.
For the problems of the prior art, in order to realize the comprehensive utilization to blast-furnace cooled water, the process system that the utility model patent provides a kind of blast-furnace cooled water residual heat and energy for Ferrous Metallurgy field to utilize.Wherein, the mechanical energy of blast-furnace cooled water is recycled by hydraulic turbine electric generator system, and low temperature heat energy is recycled by absorption type heat pump system.
This technology is fully recycled blast-furnace cooled water complementary energy waste heat, remarkable in economical benefits.Meanwhile, because the heat that blast-furnace cooled water absorbs from blast furnace is partly or entirely taken away by heat pump, the cooling tower of original system can partly or entirely be stopped using.This will greatly reduce system maintenance cost, reduce cooling tower moisturizing, improve the reliability of system, former water system is one and significantly improve.
The utility model comprises hydroelectric power system, absorption type heat pump system, and By-pass control system.
Hydroelectric power system comprises the hydraulic turbine, generator and electric power system.
Absorption type heat pump system comprises that evaporimeter, generator, absorber, condenser, high-temperature steam, hot water are for backwater and corresponding auxiliary equipment.
By-pass control system comprises valve, electric control gear and corresponding pipeline wiring.
By-pass control system adopts valve to control, and controls respectively following two kinds of switchings: recirculated cooling water is in hydroelectric generation and the directly switching between two kinds of patterns of discharge; Freely switching between heat pump and former cooling tower systems.
Heat pump and cooling tower systems can independent operatings, also can move simultaneously.When the two moves simultaneously, according to hot user's use thermic load, determine the waste heat that heat pump is required.The unnecessary heat of recirculated cooling water is taken away by cooling tower.
The driving heat source of absorption type heat pump system is the high-temperature steam of 100~350 ℃.
The high-temperature-hot-water that absorption type heat pump system output is 40~100 ℃.
The valve of By-pass control system, adopts solenoid electric valve.
In the utility model, hydroelectric power system comprises the hydraulic turbine and generator and electric power system, and the mechanical energy of blast-furnace cooled water can be converted into electric energy.
Absorption type heat pump system comprises that evaporimeter, generator, absorber, condenser, high-temperature steam, hot water, for backwater and corresponding auxiliary equipment, reclaim the low grade residual heat of blast-furnace cooled water, to client, provides high-temperature-hot-water.
By-pass control system comprises valve, electric control gear and pipeline wiring, and recirculated water can switch between original system and modernization system.
The utlity model has following advantage: (1) effectively reclaims complementary energy and the waste heat of blast furnace process for cooling, obvious energy conservation has obvious economic benefit; (2) can partly or entirely the stop using cooling tower of original system, operation expense reduces greatly; (3) save blast furnace cooling water, reduce anti-corrosion measure; (4) utilize the rich high-temperature steam of iron and steel enterprise, realize the recycling of low temperature exhaust heat; (5) heating demand can be adjusted according to demand, is convenient to implement.
The beneficial effects of the utility model can be summarized as follows:
1, use the utility model, can effectively reclaim complementary energy and waste heat that blast-furnace cooled water carries, realize significantly energy-conservationly, have advantages of that economic benefit is obvious, the investment payback time is short.
2, use the utility model, the cooling tower of the original system of can partly or entirely stopping using, operation expense reduces greatly.Meanwhile, save water, reduced anti-corrosion measure, had higher environment protection significance.
3, of the present utility model being also advantageous in that: adopt hydroelectric generation, technology maturation is reliable, invests lowly, and income is high; Bypass design does not affect the use of original system, and reliability is high; System is flexible, and heating demand can be adjusted according to demand; Steel plant's steam is sufficient, is convenient to implement; Steel plant are more with heat demand, and the utilization rate of waste heat of recovery is high.
Accompanying drawing explanation
Fig. 1 is system process figure of the present utility model.
Wherein, 1-blast furnace, 2-main sewer, 3-valve, 4-circulating water pool, 5-valve, 6-cooling tower water pump, 7-cooling tower, 8-water compensating valve, 9-cooling water pump, 10-valve, 11-vibration means for main pipe for supplying water, 12-valve, the 13-hydraulic turbine, 14-generator, 15-power supply, 16-valve, 17-warm water pump, 18-evaporator with heat pump, 19-valve, 20-heat pump absorber and condenser, 21-heat pump generator, 22-hot water backwater, 23-high-temperature-hot-water, 24-high-temperature steam, 25-electric control gear.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The process system that a kind of blast-furnace cooled water residual heat and energy as shown in Figure 1 utilizes, comprise blast-furnace cooled water device, circulating water pool 4, cooling tower water pump 6, cooling tower 7 and cooling water pump 9, also comprise the hydraulic turbine 13, generator 14, warm water pump 17, evaporator with heat pump and heat pump, the main sewer of the cooling water of described blast-furnace cooled water device is communicated to the water inlet of the described hydraulic turbine 13, the delivery port of the described hydraulic turbine 13 is communicated to described circulating water pool 4, and the described hydraulic turbine 13 is in transmission connection with described generator; Described circulating water pool 4 separates two water routes, leads up to and is communicated to the water inlet of described cooling tower 7 after described cooling tower water pump 6, and the delivery port of described cooling tower 7 is communicated to the vibration means for main pipe for supplying water of described blast-furnace cooled water device after by described cooling water pump 9; Another road is successively by described warm water pump 17 with by being also communicated to the vibration means for main pipe for supplying water of described blast-furnace cooled water device after the evaporator with heat pump 18 in described heat pump.
In a preferred embodiment, between described main sewer and the described hydraulic turbine 13, between described circulating water pool 4 and described cooling tower water pump 6, between described circulating water pool 4 and described warm water pump, between described cooling water pump 9 and described vibration means for main pipe for supplying water and be equipped with valve on the pipeline between described evaporator with heat pump and described vibration means for main pipe for supplying water.
In the embodiment being more preferably, described main sewer separated two water routes before the described hydraulic turbine 13, one tunnel is communicated to described circulating water pool 4 successively after valve and the described hydraulic turbine 13, and another road is directly communicated to described circulating water pool 4 after other valve.
In the embodiment being more preferably, the process system of described blast-furnace cooled water residual heat and energy utilization also comprises electric control gear, and described valve is magnetic valve and is all electrically connected to described electric control gear.
In the embodiment being more preferably, the suction parameter of the described hydraulic turbine 13 is,
Water temperature: 35~60 ℃; 2);
Hydraulic pressure: 60kPa-1.0MPa;
The water yield: 200-3000t/h;
Water quality: suspension < 200mg/L.
Described heat pump is absorption heat pump, and its systematic parameter is,
Evaporator water temperature: 30~60 ℃;
Steam of generator temperature: 100~350 ℃;
Hot water backwater's temperature: 25~70 ℃;
High-temperature-hot-water temperature: 40~100 ℃.
In certain specific embodiment, as shown in Figure 1, the utility model comprises hydroelectric power system, heat pump, and By-pass control system.Wherein, hydroelectric power system comprises the hydraulic turbine 13, generator 14 and electric power system 15; Heat pump comprises evaporator with heat pump 18, heat pump absorber and condenser 20, and heat pump generator 21, hot water backwater 22, high-temperature-hot-water 23, high-temperature steam 24, and corresponding auxiliary equipment; By-pass control system comprises valve 3, valve 5, valve 10, valve 12, valve 16, and valve 19, electric control gear 25, and corresponding pipeline and wiring.
During normal work, valve 3, valve 5 and valve 10 are closed, valve 12, valve 16 and valve 19 are open-minded.Blast-furnace cooled water has absorbed after blast furnace heat, and temperature raises, and from body of heater cooler, is expelled to main sewer 2, enters the hydraulic turbine 13.The hydraulic turbine 13 drives generator 14, and potential energy and kinetic transformation are electric energy, export to electric power system 15.Blast-furnace cooled water leaving water turbine 13, enters circulating water pool 4.Under the driving of warm water pump 17, the blast-furnace cooled water evaporator with heat pump 18 of flowing through, after transferring heat to heat pump, enters the body of heater cooler of blast furnace through vibration means for main pipe for supplying water 11, forms closed circuit.Heat pump, under the driving of high-temperature steam 24, heats hot water backwater 22, outwards exports high-temperature-hot-water 23.
When hydroelectric power system breaks down or overhaul, first open valve 3, then valve-off 12.Blast-furnace cooled water is directly expelled to circulating water pool 4 by main sewer 2, without the hydraulic turbine.
When heat pump breaks down or overhaul, first open valve 5 and valve 10, then valve-off 16 and valve 19.Blast-furnace cooled water in circulating water pool 4 is sent into cooling tower 7 through 6 pressurizations of cooling tower water pump, and dissipated heat and a part of water yield in tower, after water compensating valve 8 amount of makeup water, enter cooling water pump 9, and blast furnace cooler is sent in pressurization, forms closed circuit.
Heat pump and cooling tower systems be bypass each other, and two systems can independent operating, also can move simultaneously.While moving, the distribution of the water yield of two systems is controlled by the aperture of valve 5, valve 10, valve 16 and valve 19 simultaneously.
By By-pass control system, the blast-furnace cooled water circulatory system can be in hydroelectric generation and directly between two kinds of patterns of discharge, is switched.This By-pass control system is also controlled for the flow allocating of cooling tower systems and heat pump.
The utility model has fully reclaimed complementary energy and waste heat that blast-furnace cooled water carries, has realized remarkable energy-conservationly, can create obvious economic benefit.Meanwhile, adopt the utility model process system, the cooling tower of the original system of can partly or entirely stopping using, has greatly reduced operation expense.
More than by the detailed description of concrete and preferred embodiment the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.

Claims (6)

1. the process system that a blast-furnace cooled water residual heat and energy utilizes, comprise blast-furnace cooled water device, circulating water pool, cooling tower water pump, cooling tower and cooling water pump, it is characterized in that, also comprise the hydraulic turbine, generator, warm water pump, evaporator with heat pump and heat pump, the main sewer of the cooling water of described blast-furnace cooled water device is communicated to the water inlet of the described hydraulic turbine, the delivery port of the described hydraulic turbine is communicated to described circulating water pool, and the described hydraulic turbine and described generator are in transmission connection;
Described circulating water pool separates two water routes, leads up to and is communicated to the water inlet of described cooling tower after described cooling tower water pump, and the delivery port of described cooling tower is communicated to the vibration means for main pipe for supplying water of described blast-furnace cooled water device after by described cooling water pump; Another road is successively by described warm water pump with by being also communicated to the vibration means for main pipe for supplying water of described blast-furnace cooled water device after the evaporator with heat pump in described heat pump.
2. the process system that blast-furnace cooled water residual heat and energy according to claim 1 utilizes, is characterized in that: between described main sewer and the described hydraulic turbine, between described circulating water pool and described cooling tower water pump, between described circulating water pool and described warm water pump, between described cooling water pump and described vibration means for main pipe for supplying water and be equipped with valve on the pipeline between described evaporator with heat pump and described vibration means for main pipe for supplying water.
3. the process system that blast-furnace cooled water residual heat and energy according to claim 1 utilizes, it is characterized in that: described main sewer separated two water routes before the described hydraulic turbine, one tunnel is communicated to described circulating water pool successively after valve and the described hydraulic turbine, and another road is directly communicated to described circulating water pool after other valve.
4. the process system utilizing according to the blast-furnace cooled water residual heat and energy described in claim 2 or 3, is characterized in that: also comprise electric control gear, described valve is magnetic valve and is all electrically connected to described electric control gear.
5. the process system that blast-furnace cooled water residual heat and energy according to claim 1 utilizes, is characterized in that: the suction parameter of the described hydraulic turbine is,
Water temperature: 35~60 ℃;
Hydraulic pressure: 60kPa-1.0MPa;
The water yield: 200-3000t/h;
Water quality: suspension < 200mg/L.
6. the process system that blast-furnace cooled water residual heat and energy according to claim 1 utilizes, is characterized in that: described heat pump is absorption heat pump, and its systematic parameter is,
Evaporator water temperature: 30~60 ℃;
Steam of generator temperature: 100~350 ℃;
Hot water backwater's temperature: 25~70 ℃;
High-temperature-hot-water temperature: 40~100 ℃.
CN201320402012.8U 2013-07-08 2013-07-08 Processing system of waste heat and waste energy utilization of blast furnace cooling water Active CN203489522U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104279788A (en) * 2013-07-08 2015-01-14 北京华航盛世能源技术有限公司 Process system capable of utilizing waste heat and complementary energy of cooling water of blast furnace
CN104697361A (en) * 2015-03-18 2015-06-10 安徽工业大学 Construction method for anti-bonding automatic-flow coke furnace raw gas waste heat recovery heat transfer unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104279788A (en) * 2013-07-08 2015-01-14 北京华航盛世能源技术有限公司 Process system capable of utilizing waste heat and complementary energy of cooling water of blast furnace
CN104697361A (en) * 2015-03-18 2015-06-10 安徽工业大学 Construction method for anti-bonding automatic-flow coke furnace raw gas waste heat recovery heat transfer unit

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