CN1456494A - Production of sulphuric acid by firing sulphur with mixed sulphureous iron ore - Google Patents
Production of sulphuric acid by firing sulphur with mixed sulphureous iron ore Download PDFInfo
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- CN1456494A CN1456494A CN 03119051 CN03119051A CN1456494A CN 1456494 A CN1456494 A CN 1456494A CN 03119051 CN03119051 CN 03119051 CN 03119051 A CN03119051 A CN 03119051A CN 1456494 A CN1456494 A CN 1456494A
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- sulphur
- iron ore
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Abstract
A process for preparing sulfuric acid from troilite and sulfur includes such steps as mixing low-grade sulfur with troilite or its slags, burning in fluidizing furnace to generate SO2 gas, removing dust, purifying, converting and absorbing to obtain sulfuric acid. Its advantages are low cost, high output, low energy consumption and less environmental pollution.
Description
Technical field
The present invention relates to a kind of vitriolic production method, especially a kind of sulfurous iron ore mixing-burning sulphur is produced the vitriolic method.
Background technology
Existing sulfuric acid manufacture method is modal to be pyrite-based sulfuric acid production, with the sulfurous iron ore is that raw material drops into boiling furnace combustion generation SO2 gas after fragmentation, through dedusting, purify, transform, make the vitriol oil after the absorption, the feed stock for blast furnace sulphur content is little, the production cost height, and ferro-sulphur ore reduces day by day, rationally utilize the sulphur resource, improving utilization efficiency is the problem that sulfuric acid industry presses for solution, in the Ammonia Production sulphur in the raw material semi-water gas is reclaimed, by-product sulphur, and the sulphur that reclaims contains tar, impurity such as benzene and organic matter, purity is lower, can not be directly used in production, exist on the one hand because ferro-sulphur ore is limited, price increase, increased the relieving haperacidity cost, utilization efficiency is low, and the sulfur purity grade that reclaims in the Ammonia Production on the other hand is low and can't directly utilize wasting drawback.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of and low-grade sulphur is mixed sulfurous iron ore and improve into the furnace charge sulphur content, save production cost, increase sulphuric acid output, the sulfurous iron ore mixing-burning sulphur that cuts down the consumption of energy is produced the vitriolic method.
The object of the present invention is achieved like this: a kind of sulfurous iron ore mixing-burning sulphur is produced the vitriolic method, low-grade sulphur and sulfurous iron ore, slag are mixed in proportion, the compound sulphur content is controlled to be 33-35%, after screening, make granularity be no more than 4mm compound again, be delivered to the fluidizing furnace internal combustion then and generate SO
2Gas, make the vitriol oil through dedusting, purification, twice transformation, secondary absorption, sulfurous iron ore, sulphur and scoriaceous blending ratio are sulfurous iron ore: sulphur: slag=8.0-8.5: 2: 11-15, the preferred blending ratio of sulfurous iron ore, sulphur and slag is a sulfurous iron ore: sulphur: slag=8.5: 2: 11.Temperature is controlled at 700-900 ℃ in the fluidizing furnace, and pressure-controlling is at 800-1000MPa.The sulphur that mixes sulfurous iron ore adopts the low-grade block sulphur that reclaims in the Ammonia Production, earlier block sulphur and sulfurous iron ore is separated to carry out secondary after the one-level fragmentation and mix brokenly, sieves standby then.
Sulfuric acid manufacture method of the present invention is owing to mix mixing fragmentation in sulfurous iron ore and the scoriaceous compound with the sulphur that reclaims in the Ammonia Production, improved the sulphur content of going into furnace charge, the slag humidification rear section that dreg removing system reclaims in the acid-making process is returned feedstock production workshop section and is mixed with sulphur, sulfurous iron ore and keep going into the furnace charge sulphur content to stablize, the stability of increase system; Mix sulphur and improve, produce SO thereby improved burning into the furnace charge sulphur content
2The concentration of gas effectively improves relieving haperacidity output, and single covering device gas washing in SA production ability is brought up to 201 tons/day by 180 tons/day, and system improves output and surpasses 10%; Mix sulphur, reduced the power consumption of crushing section, reduced the maintenance of equipment expense, reduced the dust noise, improved operating environment; Utilizing sulphur that Ammonia Production reclaims and sulfurous iron ore, slag to be mixed can cycle operation in continuous flow procedure, guarantees the continuity of producing.The production cost of sulfurous iron ore mixing-burning sulphur relieving haperacidity is 200 yuan/ton, than 30 yuan of sulfurous iron ore method relieving haperacidity saving costs per ton, and sulfurous iron ore mixing-burning sulphur relieving haperacidity method (hereinafter to be referred as mixing the burning method) is compared with pyrite-based sulfuric acid production method (being called for short sulphur ore deposit method), the former all is better than the latter 11 indexs such as transformation efficiency, acid mist, hourly output, sees Table one.
Table 1 overall target comparison sheet
Embodiment
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1:
With sulfurous iron ore, sulphur, slag in sulfurous iron ore: sulphur: the ratio of slag=8.5: 2: 11 is mixed by shovel loader and driving, the sulphur content of control compound is 33%, sending into pulverizer is crushed to granularity and is no more than 4mm, send in the fluidizing furnace then, temperature is controlled at 700 ℃ in the fluidizing furnace, pressure-controlling is at 800MPa, and fully the burning back produces high density SO
2Gas is removed impurity through the two stage cyclone fly-ash separator, and by the further removal of impurities of foam column, cooling is sent into electrostatic precipitator behind the sublimed sulphur and removed acid mist, sends into drying tower again and is absorbed by 93% acid and enter convertor behind the moisture and be converted into SO
3, absorbed the denseer H of generation once more by 93% acid on first absorption tower
2SO
4, enter the convertor and second absorption tower again and carry out secondary conversion absorption, and obtain high-grade vitriol oil, continuous cyclic production, a large amount of heat energy that produce in the emptying end gas, fluidizing furnace are sent into waste heat boiler generation steam and are used for generating electricity.
Embodiment 2:
After block sulphur that Ammonia Production is reclaimed and sulfurous iron ore separate the one-level fragmentation, by sulfurous iron ore: sulphur: the mixed of slag=8: 2: 11 is carried out two-stage crushing, sieves assurance then and goes into furnace size and be no more than 4mm, and sulphur content is controlled to be 35%.Go into furnace charge and send into fluidizing furnace mixed again, other step is with embodiment 1.
Claims (5)
1, a kind of sulfurous iron ore mixing-burning sulphur is produced the vitriolic method, it is characterized in that: low-grade sulphur and sulfurous iron ore, slag are mixed in proportion, the compound sulphur content is controlled to be 33-35%, makes granularity be no more than 4mm after screening compound again, is delivered to the fluidizing furnace internal combustion then and generates SO
2Gas is made the vitriol oil through dedusting, purification, twice transformation, secondary absorption.
2, a kind of sulfurous iron ore mixing-burning sulphur according to claim 1 is produced the vitriolic method, and it is characterized in that: sulfurous iron ore, sulphur and scoriaceous blending ratio are sulfurous iron ore: sulphur: slag=8.0-8.5: 2: 11-15.
3, a kind of sulfurous iron ore mixing-burning sulphur according to claim 2 is produced the vitriolic method, and it is characterized in that: sulfurous iron ore, sulphur and slag blending ratio are sulfurous iron ore: sulphur: slag=8.5: 2: 11.
4, a kind of sulfurous iron ore mixing-burning sulphur according to claim 1 is produced the vitriolic method, it is characterized in that: temperature is controlled at 700-900 ℃ in the fluidizing furnace, and pressure-controlling is at 800-1000MPa.
5, a kind of sulfurous iron ore mixing-burning sulphur according to claim 1 is produced the vitriolic method, it is characterized in that: the sulphur that mixes sulfurous iron ore adopts the low-grade block sulphur that reclaims in the Ammonia Production, earlier block sulphur and sulfurous iron ore are separated and carry out secondary after the one-level fragmentation and mix brokenly, sieve standby then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119051 CN1456494A (en) | 2003-05-09 | 2003-05-09 | Production of sulphuric acid by firing sulphur with mixed sulphureous iron ore |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03119051 CN1456494A (en) | 2003-05-09 | 2003-05-09 | Production of sulphuric acid by firing sulphur with mixed sulphureous iron ore |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703873B (en) * | 2009-11-05 | 2012-01-18 | 周建安 | Method for reclaiming and treating flue gas desulfurization byproducts for sintered pellets |
| CN102367169A (en) * | 2011-05-23 | 2012-03-07 | 中国石油化工集团公司 | Method for preparation of sulfuric acid and combined production of fine flour iron through calcination of coal-derived pyrite in presence of oxygen-rich air |
| CN103011090A (en) * | 2012-12-06 | 2013-04-03 | 张跃 | Method for producing sulfur by using pyrolysis-reducing united technique |
| CN103710534A (en) * | 2013-12-27 | 2014-04-09 | 贵州华桂钼镍股份有限公司 | Oxidative decomposition method of nickel-molybdenum ores |
| CN105293448A (en) * | 2015-10-23 | 2016-02-03 | 湖北祥云(集团)化工股份有限公司 | Method for recycling sulfur residues and pyrite to make acid and device thereof |
| CN106006570A (en) * | 2016-05-25 | 2016-10-12 | 刘松 | Comprehensive utilization method of pyrite concentrate and high-sulfur coal |
| CN108328583A (en) * | 2018-03-30 | 2018-07-27 | 卢龙县双益磷化有限责任公司 | A kind of production technology of refined sulfuric acid reagent |
| CN110527822A (en) * | 2019-07-31 | 2019-12-03 | 武汉科技大学 | A kind of metallurgy refining waste residue desulfuration processing method |
| CN114229801A (en) * | 2021-11-26 | 2022-03-25 | 云浮市云开粉体有限公司 | Method for producing sulfuric acid by using powder compounding technology to form sulfur fine powder |
-
2003
- 2003-05-09 CN CN 03119051 patent/CN1456494A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703873B (en) * | 2009-11-05 | 2012-01-18 | 周建安 | Method for reclaiming and treating flue gas desulfurization byproducts for sintered pellets |
| CN102367169A (en) * | 2011-05-23 | 2012-03-07 | 中国石油化工集团公司 | Method for preparation of sulfuric acid and combined production of fine flour iron through calcination of coal-derived pyrite in presence of oxygen-rich air |
| CN102367169B (en) * | 2011-05-23 | 2013-06-12 | 中国石油化工集团公司 | Method for preparation of sulfuric acid and combined production of fine flour iron through calcination of coal-derived pyrite in presence of oxygen-rich air |
| CN103011090A (en) * | 2012-12-06 | 2013-04-03 | 张跃 | Method for producing sulfur by using pyrolysis-reducing united technique |
| CN103011090B (en) * | 2012-12-06 | 2014-07-23 | 张跃 | Method for producing sulfur by using pyrolysis-reducing united technique |
| CN103710534A (en) * | 2013-12-27 | 2014-04-09 | 贵州华桂钼镍股份有限公司 | Oxidative decomposition method of nickel-molybdenum ores |
| CN105293448A (en) * | 2015-10-23 | 2016-02-03 | 湖北祥云(集团)化工股份有限公司 | Method for recycling sulfur residues and pyrite to make acid and device thereof |
| CN106006570A (en) * | 2016-05-25 | 2016-10-12 | 刘松 | Comprehensive utilization method of pyrite concentrate and high-sulfur coal |
| CN108328583A (en) * | 2018-03-30 | 2018-07-27 | 卢龙县双益磷化有限责任公司 | A kind of production technology of refined sulfuric acid reagent |
| CN110527822A (en) * | 2019-07-31 | 2019-12-03 | 武汉科技大学 | A kind of metallurgy refining waste residue desulfuration processing method |
| CN114229801A (en) * | 2021-11-26 | 2022-03-25 | 云浮市云开粉体有限公司 | Method for producing sulfuric acid by using powder compounding technology to form sulfur fine powder |
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