CN208671701U - A kind of industrial high temperature solid granule residual neat recovering system - Google Patents
A kind of industrial high temperature solid granule residual neat recovering system Download PDFInfo
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- CN208671701U CN208671701U CN201820421767.5U CN201820421767U CN208671701U CN 208671701 U CN208671701 U CN 208671701U CN 201820421767 U CN201820421767 U CN 201820421767U CN 208671701 U CN208671701 U CN 208671701U
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- gas
- blast furnace
- gas vent
- carbon dioxide
- total oxygen
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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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
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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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model discloses a kind of industrial high temperature solid granule residual neat recovering systems.The system includes sintering system, natural gas storage tank, direct contact heat transfer/chemical reaction heat recovery system, the carbon dioxide separation/circulatory system, air-seperation system, total oxygen blast furnace；Direct contact heat transfer/chemical reaction heat recovery system top is provided with gas vent and expects import admittedly, bottom is provided with gas feed, gas feed is connected with natural gas storage tank and carbon dioxide separation/circulatory system respectively, admittedly material import is connected with sintering system, gas vent is connected with total oxygen blast furnace；Total oxygen blast furnace is provided with gas feed and gas vent, and gas feed is connected with direct contact heat transfer/chemical reaction heat recovery system gas vent, air-seperation system respectively, and gas vent is connected with carbon dioxide separation/circulatory system.The utility model device overall structure is simple, is easy installation, can be reduced energy consumption, increase economic efficiency, practical, use easy to spread.
Description
Technical field
The utility model belongs to iron and steel metallurgical industry high-temperature solid bulk cargo waste heat recycling research field, in particular to a kind of work
Industry high-temperature solid bulk cargo residual neat recovering system.
Background technique
Energy-saving and emission-reduction are the fundamental state policies in China, are the Major Strategics for realizing sustainable development.It is assisted according to China's steel industry
Can count: China produces 6.27 hundred million tons of steel within 2010, accounts for world's output of steel 44.3%, energy consumption accounts for about national total energy consumption 12%, CO2Row
High-volume account for about the whole nation 15%, energy-saving and emission-reduction have a high potential.Countries in the world are extremely paid close attention to by Energy-saving of Iron And Steel Industry emission reduction.Japan and Europe
Alliance has formulated " the low CO for steel and iron industry respectively2Draining technology route (COURSE 50) " and " ultralow CO2It makes steel (ULCOS) "
Plan.Obviously, in new round international competition, China must solve the problems, such as Energy-saving of Iron And Steel Industry emission reduction independently.
In steel production in China enterprise, most of high-quality waste energy resource has realized recycling, forms height in recent years
The a collection of mature technologies such as furnace top pressure power generation, dry coke quenching power generation and high-temperature air burning.However, there are still a considerable number of to be difficult to back
It receives the waste energy resource utilized and grade counterpart cascade utilization is not implemented, such as iron/steel slag (high-temperature fusion fluid), sintering/pellet
(high-temperature solid bulk cargo), coal gas of converter (intermittent high-temperature gas), various furnace flue gas etc., wherein residual heat integrative utilization rate is only
10~30% or so, heat recovery rate is then well below advanced developed country's industrial level.If real from supply system Ji Cheng
The high efficiente callback of existing industrial process thermal energy and cascade utilization, it will generate comparable economy and environmental benefit.Therefore, exploitation industry
High temperature waste energy resource utilizes technology and corresponding system technological design, is not only industrial complementary energy recycling and utilizes technological innovation forward position,
It is also the urgent need of steel industry energy-saving and emission-reduction.
Currently, there are three big technical bottlenecks for China's Energy-saving of Iron And Steel Industry emission reduction: 1) Iron-smelting energy consumption height, CO2Discharge amount
Greatly；2) the open waste energy resource of bulk cargo cool down is difficult to recycle；3) energy source configuration is backward in technique, integrated level is low.
Wherein the recycling of sintering process waste heat is low in the prevalence of the coefficient of overall heat transmission, leaks out, corrodes and blocks up the defects of ash, and operation and maintenance are complicated.Cause
How this, design high-temperature solid bulk cargo heat recovery and storage, improves the coefficient of overall heat transmission and quantity of heat storage, and improving utilization rate of the energy is
Matter of utmost importance.
Utility model content
In order to overcome the shortcomings and deficiencies of the prior art described above, the primary and foremost purpose of the utility model is to provide a kind of industry
High-temperature solid bulk cargo residual neat recovering system.
The purpose of this utility model is realized by following proposal:
A kind of industrial high temperature solid granule residual neat recovering system comprising sintering system (1), natural gas storage tank (2), straight
Connect contact heat exchange/chemical reaction heat recovery system (3), the carbon dioxide separation/circulatory system (4), air-seperation system
(5), total oxygen blast furnace (6).
Wherein, direct contact heat transfer/chemical reaction heat recovery system (3) top be provided with gas vent and admittedly expect into
Mouthful, bottom is provided with gas feed, and gas feed separates/circulation with natural gas storage tank (2) and unstrpped gas respectively by pipeline
System (4) is connected；Admittedly material import is connected by pipeline with sintering system (1)；Gas vent passes through pipeline and total oxygen blast furnace (6) phase
Even；
Total oxygen blast furnace (6) is provided with gas feed and gas vent, and wherein the gas feed of total oxygen blast furnace (6) passes through pipeline
It is connected respectively with direct contact heat transfer/chemical reaction heat recovery system (3) gas vent, air-seperation system (5)；Entirely
The gas vent of oxygen blast furnace (6) is connected by pipeline with carbon dioxide separation/circulatory system (4)；
Carbon dioxide separation/the circulatory system (4) is provided with gas feed, gas vent I, gas vent II, gas feed
It is connected by pipeline with the outlet of total oxygen blast furnace (6), gas vent I passes through pipeline and direct contact heat transfer/chemical reaction heat
The gas feed for measuring recovery system (3) is connected, and gas vent II is connected by pipeline with the gas feed of total oxygen blast furnace (6).
The sintering system (1) is simple high-temperature heating equipment, is smelting industry basic device.Iron ore is in order to fill
Divide reaction to produce steel as much as possible, to carry out crushing and screening after entering factory, miberal powder is not easy loading smelting, it is therefore desirable to be sintered
At blocky, spherical.The temperature of sintered solid granule is 700~1200 DEG C.The utility model is mainly exactly using sintered
The high temperature heat of journey and iron ore carry out methane reforming reaction, realize heat energy utilization, while preparing carbon monoxide and hydrogen
Synthesis gas.
The direct contact heat transfer/chemical reaction heat recovery system (3) is actually heat exchanger and reforming reactor,
The solid granule direction of motion is that from top to bottom, air motion direction is from bottom to top that the two is changed by the direct way of contact
The heat of solid granule is used directly to heating methane and carbon dioxide, improves heat exchange efficiency by heat.Methane and dioxy after heating
The temperature for changing carbon has reached 700 DEG C or more, contains calcium oxide in sintered solid granule, aluminum oxide, di-iron trioxide,
Magnesia etc., can be used as the natural catalyst of methane reforming reaction, and methane and carbon dioxide is made in the catalysis of solid three
With catalytic reforming reaction occurs, direct contact heat transfer/chemical reaction heat recovery system (3) at this time becomes a reformation again
Reactor.The CO and H that reforming reaction generates2, it can be passed directly in sintering system as reducibility gas source, it can be right
Facilitation is played in the smelting of blast furnace, improves efficiency, while can generate more slags, provides and urge for catalytic reforming process
Change condition.
Carbon dioxide separation/the circulatory system (4) is actually to utilize existing Deep Cooling Method progress tail in the prior art
The gas fractionation unit of gas separation, by pressurized liquefied blast furnace tail gas, according to the difference of boiling point between gas, to mixed gas into
Row separation is to obtain carbon dioxide.Blast furnace roof tail gas passes through carbon dioxide separation/circulatory system obtained after separation two
Carbonoxide is passed into direct contact heat transfer/chemical reaction heat recovery system as the raw material of reforming reaction, is realized whole
A process flow recycles.
The air-seperation system (5) it is practical by air compression system, impurity purification and heat-exchange system, refrigeration system and
4 Major Systems compositions of liquefying and rectifying.It is by air liquefaction, rectifying, final separation being become oxygen, nitrogen and other are useful
The gas separation equipment of gas.
A method of pre- recuperation of heat being carried out using above-mentioned industrial high temperature solid granule residual neat recovering system, is mainly wrapped
Include following steps:
(1) titanium dioxide for separating the methane and carbon dioxide separation in natural gas storage tank (2)/circulatory system (4)
Carbon is passed into direct contact heat transfer/change by the gas feed of direct contact heat transfer/chemical reaction heat recovery system (3)
It learns in heat of reaction recovery system (3), while the inner solid granule of sintering system (1) is passed through into direct contact heat transfer/chemistry
The solid material import of heat of reaction recovery system (3) is added in direct contact heat transfer/chemical reaction heat recovery system (3),
It is exchanged heat with the mixed gas being passed through from gas feed and high-temperature methane reforming reaction occurs；
(2) admixture of gas obtained in step (1) is passed through into direct contact heat transfer/chemical reaction heat recovery system
(3) gas vent is passed into total oxygen blast furnace (6), and it is anti-that burning occurs with the oxygen that air-seperation system (5) is separated
It answers；
(3) gas generated in total oxygen blast furnace (6) is passed into carbon dioxide separation/circulatory system (4) and carries out gas
Separation, the carbon dioxide isolated are passed into direct contact heat transfer/chemical reaction heat recovery system (3) as raw material,
Remaining gas, which continues to be passed into total oxygen blast furnace (6), further to be burnt.
The mechanism of the utility model are as follows:
The utility model be put forward for the first time by chemical heat storage mode recycle a large amount of high-temp solids present in smelting iron and steel dissipate
Expect that waste heat, solid granule contact with each other with gas, the temperature of reaction gas can be heated to 700 degree or more, and in solid granule
Metallics can be used as the catalyst of methane reforming reaction, therefore achievable high-temperature methane reforming reaction again, by solid granule
Sensible heat is converted into chemical heat and is stored, and improves the grade of energy；The product of methane reforming reaction can be used as reducibility gas and
Imflammable gas continues to use, and plays facilitation to the smelting of blast furnace, improves efficiency, while can generate more mines
Slag provides catalytic condition for catalytic reforming process, wherein CO or H2Flue gas after burning in total oxygen blast furnace, by isolated
Carbon dioxide can be used as the raw material in methane reforming reaction, realize recycling for entire process substances.The utility model
Industrial process high temperature is radiated and is recycled, product direct-on-line is generated and utilizes, smoke carbon dioxide recycles three at one
It generates and is combined in industry, be a potential process route of tool of energy-saving and emission-reduction, meet national energy conservation and emission reduction emphasis
Development strategy.
The utility model compared with the existing technology, have the following advantages and the utility model has the advantages that
1) the utility model, which has been put forward for the first time, recycles a large amount of height present in smelting iron and steel technique using chemical heat storage mode
Warm solid granule waste heat converts chemical heat for solid granule sensible heat and carries out storage utilization.The technique big, heat accumulation with amount of stored heat
The advantage of time length, while producing synthesis gas as blast furnace and restoring fuel gas.Metallics in its slag is anti-as chemistry
The catalyst answered, simplifies reaction unit and related procedure, reduces heat recovery cost.
2) the two is improved so that heat-carrying gas contacts with each other with solid granule using direct contact heat transfer mode
Between heat exchange rate and heat exchange efficiency.
3) reforming reaction is carried out as reaction gas using methane/carbon dioxide, absorbs high temperature using the reversible reaction process
Solid granule releases a large amount of heat, improves solid granule heat recovery ability with the mode of chemical heat storage.
4) the chemical heat storage reaction temperature is 700 degree or more, is exactly matched with high-temperature solid bulk cargo temperature after sintering, can be real
Existing open solid granule high temperature heat recycling and high-grade trans-utilization.
5) corresponding without additional addition catalyst and design directly using the metallics in iron ore as catalyst
Catalytic reactor.
6) carbon monoxide and hydrogen that thermal chemical reaction generates, can be passed directly into blast furnace as reducibility gas source.
7) the utility model device overall structure is simple, is easy installation, can be reduced energy consumption, increase economic efficiency, practicability
By force, use easy to spread.
Detailed description of the invention
Fig. 1 is the schematic diagram of the industrial high temperature solid granule residual neat recovering system in embodiment 1, wherein 1- sintering system；
2- natural gas storage tank；3- direct contact heat transfer/chemical reaction heat recovery system；4- carbon dioxide separation/the circulatory system；5-
Air-seperation system；6- total oxygen blast furnace.
Specific embodiment
The utility model is described in further detail below with reference to embodiment and attached drawing, but the implementation of the utility model
Mode is without being limited thereto.
Agents useful for same can routinely be bought unless otherwise specified from market in embodiment.
Solid material is respected work Iron And Steel Co., Ltd from Hebei in sintering system described in embodiment 1 (1), and temperature is
1450 DEG C, ingredient is as shown in table 1 below:
The ingredient of solid material in 1 sintering system of table (1)
| Chemical component | Content |
| Calcium oxide | 62.7% |
| Aluminum oxide | 27.5% |
| Di-iron trioxide | 0.94% |
| Magnesia | 8.8% |
Embodiment 1
The utility model provides a kind of industrial high temperature solid granule residual neat recovering system, specific as shown in Figure 1.It includes burning
Clone is united (1), natural gas storage tank (2), direct contact heat transfer/chemical reaction heat recovery system (3), and carbon dioxide separation/
The circulatory system (4), air-seperation system (5), total oxygen blast furnace (6).
Wherein direct contact heat transfer/chemical reaction heat recovery system (3) top be provided with gas vent and admittedly expect into
Mouthful, bottom is provided with gas feed, gas feed by pipeline respectively with natural gas storage tank (2) and carbon dioxide separation/circulation
System (4) is connected；Admittedly material import is connected by pipeline with sintering system (1)；Gas vent passes through pipeline and total oxygen blast furnace (6) phase
Even；Total oxygen blast furnace (6) is provided with gas feed and gas vent, and wherein the gas feed of total oxygen blast furnace (6) is distinguished by pipeline
It is connected with direct contact heat transfer/chemical reaction heat recovery system (3) gas vent, air-seperation system (5)；Total oxygen
The gas vent of blast furnace (6) is connected by pipeline with carbon dioxide separation/circulatory system (4)；
Carbon dioxide separation/the circulatory system (4) is provided with gas feed and gas vent I, gas vent II, gas feed
It is connected by pipeline with the outlet of total oxygen blast furnace (6), gas vent I passes through pipeline and direct contact heat transfer/chemical reaction heat
The gas feed for measuring recovery system (3) is connected, and gas vent II is connected by pipeline with the gas feed of total oxygen blast furnace (6).
Implement the method for industrial high temperature solid granule waste heat recycling using above-mentioned apparatus, specific implementation step is as follows:
(1) titanium dioxide for separating the methane and carbon dioxide separation in natural gas storage tank (2)/circulatory system (4)
Carbon is passed into direct contact heat transfer/chemistry by direct contact heat transfer/chemical reaction heat recovery system (3) air inlet
In heat of reaction recovery system, while the inner solid granule of sintering system (1) is passed through into direct contact heat transfer/chemical reaction heat
Amount recovery system solid material import be added in direct contact heat transfer/chemical reaction heat recovery system (3), with from gas into
The mixed gas that mouth is passed through exchanges heat, and reaction gas is heated to 700 DEG C or more by solid material, in the solid material generated
Containing Fe ingredient, the catalyst of natural methane/carbon dioxide reforming reaction can be used as, therefore change in direct contact type
High-temperature methane/CO 2 reforming reaction occurs in heat/chemical reaction heat recovery system, while solid material being cooled to
500 DEG C, reaction equation are as follows:
CH4+CO2=CO+H2
(2) mixed gas that will be gone out from direct contact heat transfer/chemical reaction heat recovery system (3) gas vent
It is passed into total oxygen blast furnace (6), while the oxygen that air-seperation system (5) is separated being passed into total oxygen blast furnace (6), two
Combustion reaction occurs for person, generates carbon dioxide, reaction equation are as follows:
CO+O2=CO2
H2+O2=H2O；
(3) the complete gas of reaction obtains in total oxygen blast furnace (6) gas and unreacted is passed by gas vent
Unstrpped gas separation/circulatory system separates carbon dioxide in (4), by isolated carbon dioxide by directly contacting
The gas feed of formula heat exchange/chemical reaction heat recovery system (3) is passed into direct contact heat transfer/chemical reaction heat recycling
In system, as the raw material of reforming reaction, the circulation of entire technique carbon source is realized；Remaining gas is separated to be passed into again entirely
Combustion reaction is carried out in oxygen blast furnace (6) generates carbon dioxide.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (5)
1. a kind of industrial high temperature solid granule residual neat recovering system, it is characterised in that including sintering system (1), natural gas storage tank
(2), direct contact heat transfer/chemical reaction heat recovery system (3), the carbon dioxide separation/circulatory system (4), air separation
System (5), total oxygen blast furnace (6)；
Wherein direct contact heat transfer/chemical reaction heat recovery system (3) top is provided with gas vent and expects import, bottom admittedly
Portion is provided with gas feed, and gas feed separates the/circulatory system with natural gas storage tank (2) and unstrpped gas respectively by pipeline
(4) it is connected；Admittedly material import is connected by pipeline with sintering system (1)；Gas vent is connected by pipeline with total oxygen blast furnace (6)；
Total oxygen blast furnace (6) is provided with gas feed and gas vent, and wherein the gas feed of total oxygen blast furnace (6) is distinguished by pipeline
It is connected with direct contact heat transfer/chemical reaction heat recovery system (3) gas vent, air-seperation system (5)；Total oxygen is high
The gas vent of furnace (6) is connected by pipeline with carbon dioxide separation/circulatory system (4)；
Carbon dioxide separation/the circulatory system (4) is provided with gas feed, gas vent I, gas vent II, and gas feed passes through
Pipeline is connected with the outlet of total oxygen blast furnace (6), and gas vent I is returned by pipeline and direct contact heat transfer/chemical reaction heat
The gas feed of receipts system (3) is connected, and gas vent II is connected by pipeline with the gas feed of total oxygen blast furnace (6).
2. industrial high temperature solid granule residual neat recovering system according to claim 1, it is characterised in that:
The sintering system (1) is high-temperature heating equipment, and the temperature of sintered solid granule is 700~1200 DEG C.
3. industrial high temperature solid granule residual neat recovering system according to claim 1 or 2, it is characterised in that:
The direct contact heat transfer/chemical reaction heat recovery system (3) is actually heat exchanger and reforming reactor, solid
Bulk movement direction is that from top to bottom, air motion direction is from bottom to top that the two is exchanged heat by the direct way of contact.
4. industrial high temperature solid granule residual neat recovering system according to claim 1 or 2, it is characterised in that:
Carbon dioxide separation/the circulatory system (4) is actually divided to carry out tail gas using existing Deep Cooling Method in the prior art
From gas fractionation unit, mixed gas is divided according to the difference of boiling point between gas by pressurized liquefied blast furnace tail gas
From to obtain carbon dioxide.
5. industrial high temperature solid granule residual neat recovering system according to claim 1 or 2, it is characterised in that:
The air-seperation system (5) is by air compression system, impurity purification and heat-exchange system, refrigeration system and liquefying and rectifying
4 Major Systems compositions are the gas point by the way that air liquefaction, rectifying, final separation to be become to oxygen, nitrogen and other gases
From equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820421767.5U CN208671701U (en) | 2018-03-27 | 2018-03-27 | A kind of industrial high temperature solid granule residual neat recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820421767.5U CN208671701U (en) | 2018-03-27 | 2018-03-27 | A kind of industrial high temperature solid granule residual neat recovering system |
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| Publication Number | Publication Date |
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| CN208671701U true CN208671701U (en) | 2019-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302953A (en) * | 2018-03-27 | 2018-07-20 | 中山大学 | A kind of industrial high temperature solid granule residual neat recovering system and method |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302953A (en) * | 2018-03-27 | 2018-07-20 | 中山大学 | A kind of industrial high temperature solid granule residual neat recovering system and method |
| CN108302953B (en) * | 2018-03-27 | 2024-04-30 | 中山大学 | Industrial high-temperature solid bulk waste heat recovery system and method |
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