CN103864025A - Side-blowing hot blast circulation high-efficiency desulfurizing furnace - Google Patents
Side-blowing hot blast circulation high-efficiency desulfurizing furnace Download PDFInfo
- Publication number
- CN103864025A CN103864025A CN201410122160.3A CN201410122160A CN103864025A CN 103864025 A CN103864025 A CN 103864025A CN 201410122160 A CN201410122160 A CN 201410122160A CN 103864025 A CN103864025 A CN 103864025A
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- China
- Prior art keywords
- furnace
- sulfur
- desulfurizing
- slag
- stove
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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
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Furnace Details (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a side-blowing hot blast circulation high-efficiency desulfurizing furnace. A specific method comprises the steps that a sulfur concentrate is put into a desulfurizing furnace and is fully desulfurized at a temperature of more than 1200 DEG C; sulfur-containing flue gas is introduced into a hot blast circulation furnace to heat air and ensure that the air reaches a high temperature of 650-700 DEG C when entering the desulfurizing furnace; the flue gas is introduced into a waste heat boiler to generate power from the hot blast circulation furnace, and then is introduced into an acid making system to prepare sulfuric acid; slag flowing out of the desulfurizing furnace passes through a cooling system, and the heat of the slag also enters the waste heat boiler; the cooled slag is subjected to magnetic separation to prepare a sulfur-free iron ore concentrate and sulfur-free tailings through crushing, wherein the sulfur-free iron ore concentrate is sold to steel plants, and the sulfur-free tailings after magnetic separation are sold to cement plants for production of clinkers; moreover, a water jacket is arranged outside the side-blowing high-efficiency desulfurizing furnace to form adhering slag in the furnace through water cooling so as to protect the furnace wall without a great number of high-grade refractory materials.
Description
Technical field
The present invention relates to a kind of desulfurizing furnace, is that one can change traditional sweetener, the device that residual sulphur is all taken off, specifically a kind of side-blown hot air circulation high-efficiency desulfurization stove.
Background technology
The desulfurization major equipment of China's gas washing in SA production is boiling roaster, the temperature of fluidized-bed roasting process is below 1000 degree, in sulfate slag, also has the residual sulphur of 3-5%, the present high major part of sulfate slag iron-holder is used in Steel Plant, iron-holder low for the production of cement clinker, it is all more than 1200 degree high temperature that steel and cement grog is produced, and residual sulphur all becomes sulfurous gas and enters in the air, severe contamination environment.Therefore National Development and Reform Committee, the Department of Science and Technology, Environmental Protection Department, Ministry of Industry and Information issue jointly in the 18th of 2012 No. 13 literary composition of bulletin " recycling economy technology, technology and equipment register (first) that country encourages " residual sulphur are required to control to below 0.3%; according to our investigation; boiling roaster cannot reach this index; the 17th golden tailings enrichment becomes the technique of sulphur concentrate relieving haperacidity fluosolids roasting relieving haperacidity, and iron ore concentrate also contains residual sulphur.
Summary of the invention
Advantage of the present invention is to compare traditional sweetener, sulphur all can be taken off, and slag, containing residual sulphur, does not reach more than 99% the rate of recovery of sulphur, has improved sulphuric acid output, has fully reclaimed waste heat, has improved environment.
Technical scheme of the present invention is:
Sulphur concentrate enters desulfurizing furnace fully desulfurization more than 1200 degree temperature, sulfur-containing smoke gas enters recirculation furnace, heat air, while making air enter desulfurizing furnace, reach the high temperature of 650-700 degree, flue gas enters Waste Heat Generation by recirculation furnace, then enter acid making system extracting sulfuric acid, the slag that desulfurizing furnace flows out is through cooling system, heat also enters waste heat boiler, the mine tailing pin of the not sulfur-bearing of the iron ore concentrate pin of cooled slag through pulverizing magnetic separation and becoming sulfur-bearing not after to Steel Plant's magnetic separation is produced grog to cement mill, the dross that the high-efficiency desulfurization stove that blows side in addition has water jacket water cooling to form in stove is outward protected furnace wall and is not needed a large amount of high-grade refractory materialss.
Brief description of the drawings
Fig. 1 is the skeleton construction schematic diagram of embodiment.
Embodiment
Be described further below in conjunction with drawings and Examples
A kind of side-blown hot air circulation high-efficiency desulfurization stove, specifically sulphur concentrate enters desulfurizing furnace fully desulfurization more than 1200 degree temperature, sulfur-containing smoke gas enters recirculation furnace, heat air, while making air enter desulfurizing furnace, reach the high temperature of 650-700 degree, flue gas enters Waste Heat Generation by recirculation furnace, then enter acid making system extracting sulfuric acid, the slag that desulfurizing furnace flows out is through cooling system, heat also enters waste heat boiler, the mine tailing pin of the not sulfur-bearing of the iron ore concentrate pin of cooled slag through pulverizing magnetic separation and becoming sulfur-bearing not after to Steel Plant's magnetic separation is produced grog utilization to cement mill and can also be brought benefits.The high-efficiency desulfurization stove that blows side in addition has water jacket outward, and the dross that water cooling forms in stove can also be protected furnace wall and not need a large amount of high-grade refractory materialss, has greatly reduced cost.Such flow process is under eco-friendly condition, to produce sulfuric acid by the general layout of recycling economy completely, and heat is through making full use of, generate electricity with waste heat boiler, last slag becomes the iron ore concentrate of qualified not sulfur-bearing to use to Steel Plant through magnetic separation, not sulfur-bearing mine tailing after magnetic separation is produced grog to cement mill, needs application.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (3)
1. a side-blown hot air circulation high-efficiency desulfurization stove, concrete grammar is that sulphur concentrate enters desulfurizing furnace fully desulfurization more than 1200 degree temperature, sulfur-containing smoke gas enters recirculation furnace, heat air, the high temperature that reaches 650-700 degree while making air enter desulfurizing furnace, flue gas enters Waste Heat Generation by recirculation furnace.
2. a kind of side-blown hot air circulation high-efficiency desulfurization stove according to claim 1, it is characterized in that: enter acid making system extracting sulfuric acid, the slag that desulfurizing furnace flows out is through cooling system, heat also enters waste heat boiler, and the mine tailing pin of the not sulfur-bearing of the iron ore concentrate pin of cooled slag through pulverizing magnetic separation and becoming sulfur-bearing not after to Steel Plant's magnetic separation is produced grog to cement mill.
3. a kind of side-blown hot air circulation high-efficiency desulfurization stove according to claim 1, is characterized in that: the dross that stove has water jacket water cooling to form in stove is outward protected furnace wall and do not needed a large amount of high-grade refractory materialss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122160.3A CN103864025A (en) | 2014-03-30 | 2014-03-30 | Side-blowing hot blast circulation high-efficiency desulfurizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122160.3A CN103864025A (en) | 2014-03-30 | 2014-03-30 | Side-blowing hot blast circulation high-efficiency desulfurizing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103864025A true CN103864025A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410122160.3A Pending CN103864025A (en) | 2014-03-30 | 2014-03-30 | Side-blowing hot blast circulation high-efficiency desulfurizing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103864025A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130112A (en) * | 1990-03-23 | 1992-07-14 | Monsanto Company | Method for recovering high grade process energy from a contact sulfuric acid process |
| CN101249955A (en) * | 2008-03-28 | 2008-08-27 | 李德安 | Method for preparing sulfuric acid by roasting power plant desuifurized cinder with fluidized bed roaster |
| CN102976283A (en) * | 2011-09-07 | 2013-03-20 | 江西铜业股份有限公司 | Sulfuric acid plant conversion waste heat recycling process |
-
2014
- 2014-03-30 CN CN201410122160.3A patent/CN103864025A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5130112A (en) * | 1990-03-23 | 1992-07-14 | Monsanto Company | Method for recovering high grade process energy from a contact sulfuric acid process |
| CN101249955A (en) * | 2008-03-28 | 2008-08-27 | 李德安 | Method for preparing sulfuric acid by roasting power plant desuifurized cinder with fluidized bed roaster |
| CN102976283A (en) * | 2011-09-07 | 2013-03-20 | 江西铜业股份有限公司 | Sulfuric acid plant conversion waste heat recycling process |
Non-Patent Citations (2)
| Title |
|---|
| 刘全军等,: "《硫酸渣资源化开发与利用》", 31 May 2012, 化学工业出版社, article "硫酸渣的来源及资源", pages: 12 - 20-21 * |
| 齐焉等，: "我国硫酸工业现状及"十二五"发展规划思路", 《硫酸工业》, no. 5, 25 October 2010 (2010-10-25), pages 5 - 12 * |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140618 |