CN103103302A - Dry-quenched slag granulating and waste heat recovery system - Google Patents
Dry-quenched slag granulating and waste heat recovery system Download PDFInfo
- Publication number
- CN103103302A CN103103302A CN2013100710275A CN201310071027A CN103103302A CN 103103302 A CN103103302 A CN 103103302A CN 2013100710275 A CN2013100710275 A CN 2013100710275A CN 201310071027 A CN201310071027 A CN 201310071027A CN 103103302 A CN103103302 A CN 103103302A
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- heat
- steam
- granulating device
- boiler
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/052—Apparatus features including rotating parts
- C21B2400/056—Drums whereby slag is poured on or in between
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Manufacture Of Iron (AREA)
Abstract
The invention discloses a dry-quenched slag granulating and waste heat recovery system which comprises a granulating device and a heat energy recovery system and is characterized in that the bottom of the granulating device is provided with a vent pipe, the periphery of the granulating device is provided with a heat-exchange water layer, the heat-exchange water layer is separated from the inner cavity of the granulating device through a heat-conducting wall, the heat energy recovery system comprises a dust remover, a steam waste heat boiler, a steam turbine set, a generator set, a heat pump, a drain tank, a circulating fan, a circulating water pump, a steam condenser and an oxygen storage device and the like; and through the connection of the devices, an effect of water circulation and air circulation is achieved in the system. The whole system can achieve the purposes of granulating industrial liquid slags, recycling slag heat and slag particles and supplying power and heat; and the system has the characteristics of high heat recovery rate, small pollution, and less energy consumption.
Description
Technical field
The present invention relates to a kind of with the dried system of putting out slag particle and heat recovery, particularly a kind of dried slag waste heat recovery field of putting out.
Background technology
[0002] in industrial production; can produce a large amount of liquid slags; liquid slag after treatment can be as the raw material of producing material of construction and chemical fertilizer; quality is higher; liquid liquid slag has very high heat recovery and utilization value simultaneously, so liquid towards liquid slag granulation slag particle and waste heat recovery thereof are significant.High temperature sludge manually is difficult to process, and consumes great lot of water resources during processing; A large amount of heat wastes, Huge value: each enterprise's year of boiler slag energy-conservation value ten thousand yuan of 30---500, blast furnace slag, slag be ten thousand yuan of 500--8000, even more than one hundred million units; A lot of environmental issues that current processing mode is brought: thermal pollution, sewage, dust, burn into land occupation etc.China mainly utilizes flush slag chilling and dry type chilling granulating method to come the treatment liq slag at present; wherein there is environmental pollution in water cooling, and water loss is large, waste heat energy; the problems such as the grain slag purposes is single, and there are the low problem of heat recovery rate in existing dry granulation and waste heat recovery apparatus.Adopt the dry process cooling down high-temperature industrial slag that does not consume water, reclaim simultaneously the basic orientation that its high-temperature residual heat is the slag cooling process; Have a large capacity and a wide range based on industrial slag, contain heat energy value considerable, the waste heat of recycling the hot industry slag has become the necessary of enterprise under the energy-saving and emission-reduction situation;
The enterprise that a large amount of high temperature sludges are arranged is metallurgy industry and enterprise particularly, the waste heat recovery of slag is included in the energy-saving whole planning of enterprise, actively utilizes the national policy support, implements step by step; The waste heat recovery of the metallurgical slag that the hot industry slag particularly has a large capacity and a wide range just just begins, and a large amount of technology and the market opportunity are arranged.
Summary of the invention
For solving the traditional way environmental pollution, water loss is large, and thermal waste is high, the problem that clinker glassization is low with heat recovery rate; the invention provides a kind of heat recovery rate high, energy dissipation is few, pollutes little; the clinker glass rate is high, collection slag granulation, the system that waste heat recovery and cogeneration are integrated.
Technical scheme is as follows:
﹠lt, b TranNum="57" ﹠gt, ﹠lt, / b ﹠gt, a kind of dried slag particle and residual neat recovering system of putting out, comprise granulating device and heat reclaiming system, ventpipe is equipped with in described granulating device bottom, be provided with the heat exchange water layer on every side, heat exchange water layer and granulating device inner chamber separate by heat conducting wall, heat exchange water layer hot water outlet connects deoxygenator, deoxygenator connects boiler using steam residual-heat, boiler using steam residual-heat is connected with Steam Turbine with the steam user respectively, Steam Turbine connects generating set and condenser, condenser is connected with heat pump, heat pump is connected with boiler using steam residual-heat by water circulating pump, the steam user connects heat pump, heat pump connects water circulating pump, water circulating pump is connected with the heat exchange water layer cooling water inlet of granulating device 1, be connected with fly-ash separator between granulating device heat outlet and boiler using steam residual-heat hot air intake, the boiler using steam residual-heat cold air outlet is connected with drain tank, and drain tank is connected with the import of granulating device cold air by recirculation blower.
Described ventpipe is reversed J shape, near the tube wall the port of ventpipe upper end, equally distributed aperture is arranged.
Described heat conducting wall is tubular, and diameter reduces from top to bottom gradually.
By above technical scheme, reach following beneficial effect:
1. whole system by the gentle circulation of water cycle, have higher heat recovery rate in heat and power supply, and energy dissipation is few;
2. the J-shaped of ventpipe design with holes makes it be difficult for stopping up, and is conducive to make gas easily to be full of rapidly and uniformly the granulating device inner chamber, has accelerated heat exchange efficiency; The heat conducting wall upper diameter is greater than lower diameter, increased the heat interchanging area of water and granulation slag particle in the heat exchange layer, accelerated the speed of cooling of slag, guaranteed the clinker glass rate;
3. the employing dry granulation, reduced the discharging of pollutent.
Description of drawings
Fig. 1 is a kind of dried slag particle and residual neat recovering system schematic diagram of putting out;
Fig. 2 is the granulating device schematic diagram;
1. granulating device 2. fly-ash separator 3. boiler using steam residual-heat 4. steam user 5. generating set
6. Steam Turbine 7. condenser 8. heat pump 9. recirculation blower 10. deoxygenators
11. ventpipe 12. heat exchange water layer 13. granulating device inner chamber 14. water circulating pump 15. heat conducting wall
16. revolving cup 17. high-speed electric expreess locomotive 18. drain tank 101. granulating device heat outlet 102. granulating device cold air import 103. slag inlet 104. slag notch 105. heat exchange water layer cooling water inlet 106. heat exchange water layer hot water outlet 301. boiler using steam residual-heat hot gas advance 302. boiler using steam residual-heat cold air outlets.
Embodiment is as follows:
﹠lt, b TranNum="74" ﹠gt, ﹠lt, / b ﹠gt, a kind of dried slag particle and residual neat recovering system of putting out, comprise granulating device 1 and heat reclaiming system, it is characterized in that described granulating device 1 bottom is equipped with ventpipe 11, be provided with heat exchange water layer 12 on every side, heat exchange water layer 12 separates by heat conducting wall 15 with granulating device inner chamber 13, heat exchange water layer hot water outlet 106 connects deoxygenator 10, deoxygenator 10 connects boiler using steam residual-heat 3, boiler using steam residual-heat 3 is connected with Steam Turbine with steam user 4 respectively and is connected, Steam Turbine 6 connects generating set 5 and condenser 7, condenser 7 is connected connection with heat pump, heat pump 8 is connected with boiler using steam residual-heat 3 by water circulating pump 14, steam user 4 connects heat pump 8, heat pump 8 connects water circulating pump 14, water circulating pump 14 is connected with the heat exchange water layer cooling water inlet 105 of granulating device 1, be connected with fly-ash separator 2 between granulating device heat outlet 101 and boiler using steam residual-heat hot air intake 301, boiler using steam residual-heat cold air outlet 302 is connected with drain tank 18, and drain tank 18 is connected with granulating device cold air import 102 by recirculation blower 9.
Described ventpipe 11 is reversed J shape, on the tube wall of ventpipe 11 ports, upper end, equally distributed aperture is arranged.
Described heat conducting wall 15 is tubular, and diameter reduces from top to bottom gradually.
revolving cup 16 is driven by high-speed electric expreess locomotive 17, liquid slag enters granulating device 1 by the centrifugal granulation of the revolving cup 16 of high-speed rotation from slag inlet 103, be thrown toward on the heat conducting wall 15 of surrounding, due to heat conducting wall 15 upper diameter greater than lower diameter, the granulation slag particle can tumble downwards along heat conducting wall 15, in this process, steeping in water for reconstitution in granulation slag particle and heat exchange water layer 12 is given birth to heat exchange, water through heat exchange enters boiler using steam residual-heat 3 from heat exchange water layer hot water outlet 106 after deoxygenator 10 deoxygenations, the steam part that boiler using steam residual-heat 3 produces is sent to steam user 4, another part enters Steam Turbine 6, Steam Turbine 6 drives generating set 5 generatings, become condensed water from Steam Turbine 6 low-grade steam out after condenser 7 and enter heat pump, low-grade steam after steam user 4 use enters heat pump 8, the heat of the low-grade steam that condensed water absorption steam user 4 use are crossed under the effect of heat pump 8 becomes hot water and again sends into boiler using steam residual-heat 3 through water circulating pump 14, become water of condensation from steam user 4 low-grade steam out in drain tank 18, water of condensation enters heat exchange water layer 12 by heat exchange water layer cooling water inlet 105 under the effect of water circulating pump 14, complete water cycle.
The cold air that enters from granulating device cold air import 102 is full of granulating device inner chamber 13 by ventpipe 11 Quick uniforms; fully and after slag generation heat exchange; entering boiler using steam residual-heat 3 after fly-ash separator 2 heats it; afterwards from boiler using steam residual-heat cold air outlet 302 cold air out under the effect of recirculation blower 9; again enter granulating device 1 from granulating device cold air import 102, complete the gas circulation.
The cooled slag of granulation is sent to cement mill or fertilizer plant's recycling after slag notch 104 is discharged.
The present invention coordinates by granulating device and water, gas circulation residual neat recovering system, has not only solved the problem that high temperature furnace slag waste heat recovery and slag particle are recycled, and has simultaneously the function of cogeneration, has good development prospect.
Claims (3)
1. dried slag particle and residual neat recovering system of putting out, comprise granulating device (1) and heat reclaiming system, it is characterized in that: ventpipe (11) is housed bottom described granulating device (1), be provided with heat exchange water layer (12) on every side, heat exchange water layer (12) separates by heat conducting wall (15) with granulating device inner chamber (13), heat exchange water layer hot water outlet (106) connects deoxygenator (10), deoxygenator (10) connects boiler using steam residual-heat (3), boiler using steam residual-heat (3) is connected 6 with steam user (4) with Steam Turbine respectively) be connected, Steam Turbine (6) connects generating set (5) and condenser (7), condenser (7) is connected 8 with heat pump) connect, heat pump (8) is connected with boiler using steam residual-heat (3) by water circulating pump (14), steam user (4) connects heat pump (8), heat pump (8) connects water circulating pump (14), water circulating pump (14) is connected with the heat exchange water layer cooling water inlet (105) of granulating device (1), be connected with fly-ash separator (2) between granulating device heat outlet (101) and boiler using steam residual-heat hot air intake (301), boiler using steam residual-heat cold air outlet (302) is connected with drain tank (18), and drain tank (18) is connected with granulating device cold air import (102) by recirculation blower (9).
2. a kind of dried slag particle and residual neat recovering system of putting out according to claim 1, is characterized in that ventpipe (11) is J-shaped, on the tube wall of ventpipe (11) port, upper end, equally distributed aperture arranged.
3. a kind of dried slag particle and residual neat recovering system of putting out according to claim 1, is characterized in that heat conducting wall (15) is tubular, and diameter reduces from top to bottom gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100710275A CN103103302A (en) | 2013-03-06 | 2013-03-06 | Dry-quenched slag granulating and waste heat recovery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100710275A CN103103302A (en) | 2013-03-06 | 2013-03-06 | Dry-quenched slag granulating and waste heat recovery system |
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| Publication Number | Publication Date |
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| CN103103302A true CN103103302A (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100710275A Pending CN103103302A (en) | 2013-03-06 | 2013-03-06 | Dry-quenched slag granulating and waste heat recovery system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986055A (en) * | 2019-12-20 | 2020-04-10 | 卢一念 | Environment-friendly carbon burning device and using method thereof |
| WO2023103347A1 (en) * | 2021-12-09 | 2023-06-15 | 中国华能集团清洁能源技术研究院有限公司 | Apparatus and method for utilizing waste heat of garbage incinerator slag by means of coupled plasma cracking |
-
2013
- 2013-03-06 CN CN2013100710275A patent/CN103103302A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986055A (en) * | 2019-12-20 | 2020-04-10 | 卢一念 | Environment-friendly carbon burning device and using method thereof |
| WO2023103347A1 (en) * | 2021-12-09 | 2023-06-15 | 中国华能集团清洁能源技术研究院有限公司 | Apparatus and method for utilizing waste heat of garbage incinerator slag by means of coupled plasma cracking |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130515 |