CN202648447U - Waste heat electricity generation system in ferronickel smelting craft - Google Patents
Waste heat electricity generation system in ferronickel smelting craft Download PDFInfo
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- CN202648447U CN202648447U CN2012201471145U CN201220147114U CN202648447U CN 202648447 U CN202648447 U CN 202648447U CN 2012201471145 U CN2012201471145 U CN 2012201471145U CN 201220147114 U CN201220147114 U CN 201220147114U CN 202648447 U CN202648447 U CN 202648447U
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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
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Abstract
Provided is a waste heat electricity generation system in a ferronickel smelting craft. The waste heat electricity generation system in the ferronickel smelting craft comprises at least one steam turbine island system, an ore-smelting electric furnace smoke bootstrap system, a rotary kiln smoke bootstrap system, an ore-smelting electric furnace melted sludge smoke bootstrap system and an argon oxygen decarburization (AOD) refining converter smoke bootstrap system. The steam turbine island system comprises a steam turbine, a generator and a low pressure steam distributing cylinder and an intermediate pressure steam distributing cylinder, wherein the low pressure steam distributing cylinder and the medium pressure steam distributing cylinder are matched with the steam turbine. Medium pressure and medium heat superheated steam is generated by the ore-smelting electric furnace smoke bootstrap system and enters into the steam turbine to generate electricity by the medium pressure steam distribution cylinder. Low pressure superheated steam is generated by the rotary kiln smoke bootstrap system and enters into the steam turbine to generate electricity by the low pressure steam distributing cylinder. Medium pressure and medium heat superheated steam is generated by the ore-smelting electric furnace melted sludge smoke bootstrap system and enters into the steam turbine to generate electricity by the medium pressure steam distribution cylinder. Low heat and low pressure superheated steam is generated by the ore-smelting electric furnace melted sludge smoke bootstrap system and enters into the steam turbine to generate electricity by the low pressure steam distribution cylinder. Steam generated by the AOD refining converter smoke bootstrap system enters into the steam turbine to generate electricity as supplementary steam of another level.
Description
Technical field
The utility model relates to a kind of smelting UTILIZATION OF VESIDUAL HEAT IN technology, refers in particular to a kind of nickel iron smelting process afterheat generating system.
Background technology
The smelting process of producing at present primary nickel take the laterite nickel ore as raw material can be divided into two kinds of pyrometallurgy and hydrometallurgys, and rotary kiln-ore-smelting electric furnace smelting technology is that the RKEF smelting process is a kind of of pyrometallurgy.
Production procedure during typical case RKEF smelting process is used at home and technique general introduction:
(1) ore flow process
Stock yard-→ dry kiln-→ screening, fragmentation and mixing dosage-→ rotary kiln-→ ore-smelting electric furnace slightly refines-→ desulfurization of iron bag-→ refining converter-→ casting.
(2) technique general introduction
The kiln drying of ore drying is dry, and after lime stone, reducing agent sieved fragmentation at stock yard, between getting the raw materials ready, mixing dosage was sent into rotary kiln.Return in the brickkiln, about 1000 ℃ nickel slag is made in raw material drying, roasting, prereduction again.The nickel slag is sent into ore-smelting electric furnace under the sealing state of thermal isolation.Ore-smelting electric furnace is totally enclosed type, self-baking electrode, and submerged arc smelting, reduction be molten minute raw ferro nickel and a slag also, produces simultaneously to contain about 70%～75% low heat value flue gas of CO, and flue gas is delivered to the rotary kiln burner through purification, and acting as a fuel with coal dust supplies to rotary kiln.The ore-smelting electric furnace slag through after the shrend as construction material.The ore-smelting electric furnace product is raw ferro nickel, adds in advance desulfurizing agent before tapping a blast furnace, the simultaneously desulfurization of tapping a blast furnace.Raw ferro nickel is delivered to AOD refining converter oxygen decarburization, and the ferronickel after the refining is cast conforming articls ferronickel piece.
The state of flue gas, UTILIZATION OF VESIDUAL HEAT IN is as follows in the present domestic nickel iron smelting process:
1, the low heat value flue gas of ore-smelting electric furnace generation is sent into rotary kiln through purification and is acted as a fuel with coal dust.
2, the flue gas of rotary kiln generation is delivered to dry kiln behind coal dust dried feed ore, purifies through deduster, to smoke stack emission.
3, the flue gas of AOD refining furnace generation through water-cooled flue or gasification cooling flue, and through after the aerial cooler cooling, purifies through deduster, to smoke stack emission; The hot water that water-cooled flue produces is for production, or cools off through cooling tower, in the heat loss atmosphere; Or hot for production or life through the gasification cooling flue producing steam; The aerial cooler air is taken away in the heat loss atmosphere.
4, in the ore-smelting electric furnace high temperature furnace slag hardening, about 10% vaporization is scattered and disappeared, and circulating cooling water cooling hardening, heat scatters and disappears in atmosphere through cooling tower, does not also obtain utilizing.
As seen, residual heat resources are abundant in the nickel iron smelting process, though but the hot water or the steam that produce obtain part, but still with the form of vapour and water as heat carrier, therefore hot user is limited.What most domestic smelting process thermal resource directly scattered and disappeared still is a kind of comparatively general phenomenon.It is the major reason that causes industry high energy consumption, thermal resource waste; Also be to cause the environment greenhouse gas emission excessive, the main cause of high pollution.
Therefore, how to solve ferronickel from ore heating beginning, through ore-smelting electric furnace slightly refine, the desulfurization of iron bag, refining converter and even slag water quenching process in the high-performance problem of complex utilization of generation flue gas in all process steps, be the large problem of one in the industry and the comprehensive environmental improvement always.
The utility model content
The purpose of this utility model: be intended to propose the method that fume afterheat utilizes in a kind of package solution nickel iron smelting process, both improve fume afterheat local use rate in traditional nickel iron smelting process, reduced energy consumption, simultaneously also reduce greenhouse gas emission, alleviate environmental pollution.
Above-mentioned utility model purpose realizes by following technological approaches: ore-smelting electric furnace fume afterheat in the whole nickel iron smelting process is produced system, the rotary kiln fume afterheat produces system, ore-smelting electric furnace slag fume afterheat produces system and AOD refining converter fume afterheat produces system, set up into respectively corresponding ore-smelting electric furnace smoke waste heat utilization system 5, rotary kiln smoke waste heat utilization system 7, ore-smelting electric furnace slag smoke waste heat utilization system 6 and AOD refining converter smoke waste heat utilization system 8, and with above-mentioned each smoke waste heat utilization system, combine with at least one steamer electricity generation system A, be built into the nickel iron smelting process afterheat generating system.
This nickel iron smelting process afterheat generating system comprises at least one A of Turbine Island system, ore-smelting electric furnace smoke waste heat utilization system 5, rotary kiln smoke waste heat utilization system 7, ore-smelting electric furnace slag smoke waste heat utilization system 6 and AOD refining converter smoke waste heat utilization system 8; Described Turbine Island system forms by steam turbine 1, generator 2 and with supporting low pressure sub-cylinder 3 and the middle pressure sub-cylinder 4 of steam turbine; Wherein press sub-cylinder 4 to enter steam turbine 1 generating in the ore-smelting electric furnace smoke waste heat utilization system 5 in the medium temperature and medium pressure superheated steam of the output warp; The low-pressure superheated steam that rotary kiln smoke waste heat utilization system 7 produces enters steam turbine 1 generating through low pressure sub-cylinder 3; Press sub-cylinder 4 to enter steam turbine 1 generating in the medium temperature and medium pressure superheated steam warp that ore-smelting electric furnace slag smoke waste heat utilization system 6 produces, the low-temp low-pressure superheated steam of its generation then enters steam turbine 1 generating through 3 of low pressure sub-cylinders; Filling enters steam turbine 1 generating to the steam that AOD refining converter smoke waste heat utilization system 8 produces as another grade.
This nickel iron smelting process afterheat generating system according to above technical scheme proposition, by the combination with afterheat generating system and each fume afterheat discharge phase of whole nickel iron smelting process, but the waste heat that produces in each operation stage in the local use nickel iron smelting process on the one hand reduces greenhouse gas emission, reduces environmental pollution; By cogeneration, directly supply with business electrical, guarantee to produce simultaneously.
Description of drawings
Fig. 1 is the structural representation of afterheat generating system of the present utility model.
Among the figure: press sub-cylinder 5-ore-smelting electric furnace smoke waste heat utilization system 6-ore-smelting electric furnace slag smoke waste heat utilization system 7-rotary kiln smoke waste heat utilization system 8-AOD refining converter smoke waste heat utilization system A-Turbine Island among the 1-steam turbine 2-generator 3-low pressure sub-cylinder 4-.
The specific embodiment
Further set forth the utility model below in conjunction with Figure of description, and provide embodiment of the present utility model.
This nickel iron smelting process afterheat generating system as shown in Figure 1 comprises at least one A of Turbine Island system, ore-smelting electric furnace smoke waste heat utilization system 5, rotary kiln smoke waste heat utilization system 7, ore-smelting electric furnace slag smoke waste heat utilization system 6 and AOD refining converter smoke waste heat utilization system 8; The described Turbine Island A of system forms by steam turbine 1, generator 2 and with supporting low pressure sub-cylinder 3 and the middle pressure sub-cylinder 4 of steam turbine; Wherein press sub-cylinder 4 to enter steam turbine 1 generating in the ore-smelting electric furnace smoke waste heat utilization system 5 in the medium temperature and medium pressure superheated steam of the output warp; The low-pressure superheated steam that rotary kiln smoke waste heat utilization system 7 produces enters steam turbine 1 generating through low pressure sub-cylinder 3; Press sub-cylinder 4 to enter steam turbine 1 generating in the medium temperature and medium pressure superheated steam warp that ore-smelting electric furnace slag smoke waste heat utilization system 6 produces, the low-temp low-pressure superheated steam of its generation then enters steam turbine 1 generating through 3 of low pressure sub-cylinders; Filling enters steam turbine 1 generating to the steam that AOD refining converter smoke waste heat utilization system 8 produces as another grade.
Wherein, in the ore-smelting electric furnace smoke waste heat utilization system 5, mineral hot furnace low heat value high-temperature flue gas is sent into waste heat boiler and is carried out heat exchange after fully burning, and produces medium temperature and medium pressure steam, for steam turbine 1 generating; Flue gas is delivered to smoke stack emission by air-introduced machine behind deduster.
In the rotary kiln smoke waste heat utilization system 7, low-temperature flue gas is sent into waste heat boiler and is carried out heat exchange in the rotary kiln, produces low-pressure superheated steam, sends into steam turbine 1 filling generating; Flue gas is delivered to another smoke stack emission by air-introduced machine behind deduster.
Press sub-cylinder 4 to enter steam turbine 1 generating in the medium temperature and medium pressure superheated steam warp that described ore-smelting electric furnace slag smoke waste heat utilization system 6 produces, the low-temp low-pressure superheated steam of its generation then enters steam turbine 1 generating through 3 of low pressure sub-cylinders; The slag flue gas that has carried out heat exchange is emptying by chimney after dust suction is processed.
The steam that described AOD refining converter smoke waste heat utilization system 8 produces can be used as another grade filling and enters steam turbine 1 generating, and the low-temperature flue gas that has carried out heat exchange is emptying by chimney after dust suction is processed.。
In the utility model, because the reasonable introducing of afterheat generating system (Turbine Island system), under the prerequisite that does not affect the former technique of nickel-iron smelting, the fume afterheat resource of nickel iron smelting process is rationally fully utilized, producing steam generates electricity on the spot for the production of electricity consumption, both reduce energy consumption of unit product, and can reduce greenhouse gas emission again, improved energy utilization rate.
The utility model proposes brand-new nickel iron smelting process UTILIZATION OF VESIDUAL HEAT IN route, the heat energy ladder is utilized, reclaim heat energy, produce on the spot electric energy, reduced the loss in the power delivery process, for the such big power consumer of metallurgy industry, be energy-conservation effective way, guaranteed again production.
For metallurgy industry enterprise, build afterheat generating system, to invest littlely, instant effect can significantly reduce the metallurgical production energy consumption, correspondingly can significantly improve Business Economic Benefit.For the sustainable development of China's economy and society, energy-conservation is when last very urgent task.Energy-conservation necessary dependence technology does not have corresponding technical support, and energy-saving and emission-reduction will become an empty verbiage so.Simultaneously ferronickel rotary kiln-ore-smelting electric furnace smelting process is introduced China or primary stage, its maturation, improves for China's metallurgy industry development special meaning is also arranged.The utility model is based on whole nickel iron smelting process, the introducing cogeneration technology of innovation, to nickel iron smelting process, especially the Utilizing Energy Sources in Reason of rotary kiln-ore-smelting electric furnace smelting process has been made actively, has effectively been explored, and for the energy-saving and emission-reduction of China and the development of metallurgy industry very important meaning is arranged.
Claims (1)
1. a nickel iron smelting process afterheat generating system comprises at least one Turbine Island system, ore-smelting electric furnace smoke waste heat utilization system, rotary kiln smoke waste heat utilization system, ore-smelting electric furnace slag smoke waste heat utilization system and AOD refining converter smoke waste heat utilization system; Described Turbine Island system forms by steam turbine (1), generator (2) and with supporting low pressure sub-cylinder (3) and the middle pressure sub-cylinder (4) of steam turbine; Wherein press sub-cylinder (4) to enter steam turbine (1) generating in the ore-smelting electric furnace smoke waste heat utilization system (5) in the medium temperature and medium pressure superheated steam of the output warp; The low-pressure superheated steam that rotary kiln smoke waste heat utilization system (7) produces enters steam turbine (1) generating through low pressure sub-cylinder (3); Press sub-cylinder (4) to enter steam turbine (1) generating in the medium temperature and medium pressure superheated steam warp that ore-smelting electric furnace slag smoke waste heat utilization system (6) produces, the low-temp low-pressure superheated steam of its generation then then enters steam turbine (1) generating through low pressure sub-cylinder (3); Filling enters steam turbine (1) generating to the steam that AOD refining converter smoke waste heat utilization system (8) produces as another grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201471145U CN202648447U (en) | 2012-04-10 | 2012-04-10 | Waste heat electricity generation system in ferronickel smelting craft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012201471145U CN202648447U (en) | 2012-04-10 | 2012-04-10 | Waste heat electricity generation system in ferronickel smelting craft |
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| CN202648447U true CN202648447U (en) | 2013-01-02 |
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| CN2012201471145U Withdrawn - After Issue CN202648447U (en) | 2012-04-10 | 2012-04-10 | Waste heat electricity generation system in ferronickel smelting craft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607287A (en) * | 2012-04-10 | 2012-07-25 | 上海瑞恩能源投资有限公司 | Ferro-nickel smelting process waste heat generating system |
| CN109492279A (en) * | 2018-10-26 | 2019-03-19 | 河北科技大学 | A kind of turbine booster pump two sides characteristic parameter matching method based on synthesis ammonia decarbonization system |
-
2012
- 2012-04-10 CN CN2012201471145U patent/CN202648447U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607287A (en) * | 2012-04-10 | 2012-07-25 | 上海瑞恩能源投资有限公司 | Ferro-nickel smelting process waste heat generating system |
| CN109492279A (en) * | 2018-10-26 | 2019-03-19 | 河北科技大学 | A kind of turbine booster pump two sides characteristic parameter matching method based on synthesis ammonia decarbonization system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130102 Effective date of abandoning: 20131113 |
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| RGAV | Abandon patent right to avoid regrant |