CN203518641U - Sintering residual-heat comprehensive utilization device - Google Patents
Sintering residual-heat comprehensive utilization device Download PDFInfo
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- CN203518641U CN203518641U CN201320560007.XU CN201320560007U CN203518641U CN 203518641 U CN203518641 U CN 203518641U CN 201320560007 U CN201320560007 U CN 201320560007U CN 203518641 U CN203518641 U CN 203518641U
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- flue
- superheater
- cooler
- residual
- heat
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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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a sintering residual-heat comprehensive utilization device. The sintering residual-heat comprehensive utilization device comprises a flue residual-heat utilization device, a medium-pressure superheater, a first medium-pressure evaporator, a second medium-pressure evaporator, a fed-water preheater, a secondary superheater, a low-pressure superheater and a low-pressure evaporator, wherein the flue residual-heat utilization device is arranged at the tail of a main flue; the medium-pressure superheater and the first medium-pressure evaporator are arranged on the first section of a cooler and used for preliminarily superheating steam produced by the flue residual-heat utilization device; the second medium-pressure evaporator and the medium-pressure preheater are arranged on the second section of the cooler; the fed-water preheater is arranged on the third section of the cooler. The sintering residual-heat comprehensive utilization device has the advantages that after the residual-heat comprehensive utilization scheme is adopted, gradient scientific utilization of residual-heat resources in an existing sintering procedure is achieved, matched residual-heat utilization equipment is arranged at residual-heat resources points, and maximization of residual-heat utilization is achieved; meanwhile, the superheated steam produced by the sintering residual-heat comprehensive utilization device has extensive secondary utilization value, and long-distance conveying of the steam is facilitated.
Description
Technical field
The utility model relates to a kind of sintering waste heat comprehensive utilization device, relates in particular to a kind of for existing steel enterprise sintering factory comprehensive waste-heat utilizing device.
Background technology
Research shows, Main Gas Flue of Sintering Machine fume afterheat accounts for 13%～23% left and right of sintering circuit energy consumption, and cooling machine waste gas waste heat accounts for 19%～35% of sintering circuit energy consumption, and both sums are up to 50%, and the generation of theoretical secondary energy sources is 1.62GJ/ ton.Visible, sintering plant waste heat recovery has a high potential, and the emphasis of recovery should be useless (cigarette) the gas waste heat of sintering and sintering mine sensible heat reclaims.
At present, the mode of sintered discharge gas heat recovery mainly contains following four kinds: with the exhaust of cooler, replace the combustion air of ignition of sintering process device or for warm-up combustion-supporting air, reduce gas consumption in ignition, or carry out hot gas sintering, reduce solid fuel consumption and improve sinter quality; Exhaust is directly used in to preheating sinter mixture, to reduce solid fuel consumption; Utilize waste heat boiler produce steam or hot water is provided, directly utilize; The steam that waste heat boiler is produced, converts electric power to by turbine.Domestic iron and steel enterprises adopts aforesaid way to recycle sintering waste heat more, and this kind of mode do not fully demonstrate the value of sinter fume waste heat, and insufficient to the UTILIZATION OF VESIDUAL HEAT IN having reclaimed, and causes the secondary waste of the energy.
By to sintering circuit residual heat resources attributional analysis, residual heat resources distribute as follows:
1. flue collector fume afterheat is positioned at sintering machine afterbody, and temperature is 300～450 ℃, and exhaust gas volumn accounts for flue collector exhaust gas volumn 35%;
2. cooler is 1 section, 350～400 ℃ of temperature, corresponding 1 section of blower air quantity;
3. cooler is 2 sections, 250～350 ℃ of temperature, corresponding 2 sections of blower air quantities;
4. cooler is 3 sections, 200～250 ℃ of temperature, corresponding 3 sections of blower air quantities;
5. sintering feed opening, temperature, has obvious radiant heat transfer feature simultaneously by 550～600 ℃.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sintering waste heat comprehensive utilization device, accomplishes energy step, utilizes effectively and reasonably.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of sintering waste heat comprehensive utilization device, comprise cooler, cooler is connected with flue collector, described cooler is provided with feed opening, 1 fragment position, 2 fragment position, 3 fragment position, also comprise device for utilizing waste heat in flue, middle pressure superheater, middle pressure evaporimeter one, middle pressure evaporimeter two, feed water preheater, secondary superheater, low-pressure superheater, low pressure evaporator, at flue collector afterbody, be provided with device for utilizing waste heat in flue; In cooler 1 fragment position, middle pressure superheater and middle pressure evaporimeter one are set, it is tentatively overheated that the steam that device for utilizing waste heat in flue is produced carries out; In cooler 2 fragment position, middle pressure evaporimeter two, middle pressure preheater are set; In cooler 3 fragment position, feed water preheater is set; Near cooler position, be provided with low-pressure superheater, the low pressure evaporator connecting by flue gas system successively from top to down; In cooler feed opening position, secondary superheater is set, and sets out air port at secondary superheater, when utilizing useless flue gas, will scavenge and draw.
Described device for utilizing waste heat in flue is comprised of flue collector superheater, flue collector evaporimeter, flue collector drum, between flue collector drum and flue collector evaporimeter, by circulation internal control, be connected, realize water Natural Circulation, after generation saturated vapor, after flue collector superheater is preliminary overheated, through secondary superheater, supply outward again.
Compared with prior art, the beneficial effects of the utility model are:
After adopting residual heat integrative to utilize scheme, realized the gradient distribution scientific utilization to existing sintering circuit residual heat resources, the waste heat utilization equipment matching the setting of each residual heat resources point, reach the maximization of UTILIZATION OF VESIDUAL HEAT IN, low-pressure superheated steam, the middle pressure superheated steam produced have secondary value widely simultaneously, and the long distance of being also convenient to steam is carried.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: press in 1-feed water preheater 2-to press in evaporimeter two 3-to press in superheater 4-to press in evaporimeter one 5-secondary superheater 6-low-pressure superheater 7-low pressure evaporator 8-flue collector superheater 9-flue collector evaporimeter 10-blower fan 11-deduster 12-and press preheater 16-1 section 17-2 section 18-3 section 19-feed opening in drum 13-low pressure drum 14-flue collector drum 15-.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described in detail, but should be noted that enforcement of the present utility model is not limited to following embodiment.
See Fig. 1, a kind of sintering waste heat comprehensive utilization device, comprise cooler, cooler is connected with flue collector, described cooler is provided with feed opening 19, 1 section of 16 position, 2 section of 17 position, 3 section of 18 position, comprise device for utilizing waste heat in flue, middle pressure superheater 3, middle pressure evaporimeter 1, middle pressure evaporimeter 22, feed water preheater 1, secondary superheater 5, low-pressure superheater 6, low pressure evaporator 7, at flue collector afterbody, device for utilizing waste heat in flue is installed, make full use of flue collector temperature and be the waste heat flue gas of 300～450 ℃, reduce flue collector blower fan 10 inlet temperatures, protection follow-up equipment,
In install 1 section of 16 position of cooler, press superheater 3 and middle pressure evaporimeter 1, make full use of the waste heat waste gas of 350～400 ℃ of 1 section of 16 temperature of cooler, it is tentatively overheated that the steam that device for utilizing waste heat in flue is produced carries out;
In install 2 section of 17 position of cooler, press evaporimeter 22, middle pressure preheater 15, utilize the waste heat waste gas of 250～350 ℃ of 2 section of 17 temperature of cooler;
In 3 section of 18 position of cooler, feed water preheater 1 is installed, is utilized the waste heat exhaust gas heating system feedwater of 200～250 ℃ of 3 section of 18 temperature of cooler;
At cooler, build nearby by flue gas system and connect from top to down pre-low autoclave, low pressure evaporator 7, and auxiliary device factory building (oxygen-eliminating device, water pump, control, distribution etc.);
In cooler feed opening 19 positions, secondary superheater 5 is installed, utilizing temperature is the radiations heat energy of the mineral aggregate of 550～600 ℃, and sets out air port at secondary superheater 5, when utilizing useless flue gas, will scavenge and draw.
Described device for utilizing waste heat in flue is comprised of flue collector superheater 8, flue collector evaporimeter 9, flue collector drum 14, between flue collector drum 14 and flue collector evaporimeter 9, by circulation internal control, be connected, realize water Natural Circulation, produce after saturated vapor after flue collector superheater 8 is preliminary overheated again through the outer confession of secondary superheater 5.
A sintering waste heat comprehensive utilization process, comprises that fume afterheat utilizes technique and carbonated drink UTILIZATION OF VESIDUAL HEAT IN technique:
1) fume afterheat utilizes technique:
In 1 section of 16 hot flue gas process of cooler, press superheater 3, middle pressure evaporimeter 1; In 2 section of 17 hot flue gas process, press evaporimeter 22, middle pressure preheater 15; 1 section of 16,2 sections of 17 flue gas through vertical low-pressure superheater 6, low pressure evaporator 7, then are sent ring back to through blower fan 10 and are continued cooling sintering mineral aggregates for cold 1 section 16,2 sections 17 after pipe influx;
3 section of 18 hot flue gas of cooler be directly discharge after feed water preheater 1;
The hot flue gas of feed opening 19 is after secondary superheater 5, then process deduster 11 is connected to hot gas sintering operation;
Flue collector tail flue gas collects master and takes out leading portion flue gas after flue collector superheater 8, flue collector evaporimeter 9, enters main exhauster 10;
2) carbonated drink UTILIZATION OF VESIDUAL HEAT IN technique:
Feedwater is through feed water preheater 1, after after thermal deaerator deoxygenation, enter deoxygenation water tank;
Low-pressure section, deaerated water enters low pressure drum 13 through low pressure feed water pump, and low pressure evaporator 7 is connected by inner loop pipeline with low pressure drum 13, and water is Natural Circulation between low pressure evaporator 7 and low pressure drum 13, realize heat exchange, the saturated vapor of generation through low-pressure superheater 6, after outside supply;
Intermediate pressure section, in deaerated water warp, press feed pump to enter middle pressure preheater 15, after preheating, enter middle pressure drum 12, middle pressure evaporimeter is connected by inner loop pipeline with middle pressure drum 12, water is Natural Circulation between middle pressure drum 12 and middle pressure evaporimeter 22, middle pressure evaporimeter 1, realize heat exchange, the saturated vapor of generation through in press superheater 3, secondary superheater 5 after outside supply;
Flue collector part, deaerated water enters flue collector drum 14 through flue collector feed pump, flue collector evaporimeter 9 is connected by inner loop pipeline with flue collector drum 14, water is Natural Circulation between flue collector drum 14 and flue collector evaporimeter 9, realize heat exchange, the saturated vapor of generation supplies outside after flue collector superheater 8, secondary superheater 5.
The residual heat resources of sintering circuit are rationally fully utilized: for the residual heat resources of 200～250 ℃, adopt water preheater, improve heat transfer temperature difference; For the residual heat resources of 250～350 ℃, adopt low pressure steam boiler, when guaranteeing heat transfer temperature difference, make full use of the enhanced heat exchange effect of the latent heat of vaporization; For the residual heat resources of 350～400 ℃, adopt middle pressure steam boiler; Meanwhile, 550～600 ℃ of feed opening 19(temperature) secondary superheater 5 is set, utilize this part high temperature heat source, and high-temp waste gas is drawn, after dedusting, be incorporated to hot gas sintering technology utilization.
The utility model has been realized the gradient distribution scientific utilization to existing sintering circuit residual heat resources after adopting residual heat integrative to utilize scheme, the waste heat utilization equipment matching the setting of each residual heat resources point, reach the maximization of UTILIZATION OF VESIDUAL HEAT IN, low-pressure superheated steam, the middle pressure superheated steam produced have secondary value widely simultaneously, and the long distance of being convenient to steam is carried.
Claims (2)
1. a sintering waste heat comprehensive utilization device, comprise cooler, cooler is connected with flue collector, described cooler is provided with feed opening, 1 fragment position, 2 fragment position, 3 fragment position, it is characterized in that, also comprise device for utilizing waste heat in flue, middle pressure superheater, middle pressure evaporimeter one, middle pressure evaporimeter two, feed water preheater, secondary superheater, low-pressure superheater, low pressure evaporator, at flue collector afterbody, be provided with device for utilizing waste heat in flue; In cooler 1 fragment position, middle pressure superheater and middle pressure evaporimeter one are set, it is tentatively overheated that the steam that device for utilizing waste heat in flue is produced carries out; In cooler 2 fragment position, middle pressure evaporimeter two, middle pressure preheater are set; In cooler 3 fragment position, feed water preheater is set; Near cooler position, be provided with low-pressure superheater, the low pressure evaporator connecting by flue gas system successively from top to down; In cooler feed opening position, secondary superheater is set, and sets out air port at secondary superheater, when utilizing useless flue gas, will scavenge and draw.
2. a kind of sintering waste heat comprehensive utilization device according to claim 1, it is characterized in that, described device for utilizing waste heat in flue is comprised of flue collector superheater, flue collector evaporimeter, flue collector drum, between flue collector drum and flue collector evaporimeter, by circulation internal control, be connected, realize water Natural Circulation, after generation saturated vapor, after flue collector superheater is preliminary overheated, through secondary superheater, supply outward again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560007.XU CN203518641U (en) | 2013-09-10 | 2013-09-10 | Sintering residual-heat comprehensive utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560007.XU CN203518641U (en) | 2013-09-10 | 2013-09-10 | Sintering residual-heat comprehensive utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203518641U true CN203518641U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201320560007.XU Expired - Lifetime CN203518641U (en) | 2013-09-10 | 2013-09-10 | Sintering residual-heat comprehensive utilization device |
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| CN (1) | CN203518641U (en) |
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2013
- 2013-09-10 CN CN201320560007.XU patent/CN203518641U/en not_active Expired - Lifetime
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |