CN105060257A - Method for preparing sulfur dioxide by using sulfur paste - Google Patents
Method for preparing sulfur dioxide by using sulfur paste Download PDFInfo
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- CN105060257A CN105060257A CN201510508317.0A CN201510508317A CN105060257A CN 105060257 A CN105060257 A CN 105060257A CN 201510508317 A CN201510508317 A CN 201510508317A CN 105060257 A CN105060257 A CN 105060257A
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- sulphur cream
- quartzite
- sulphur
- white sand
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Abstract
The invention belongs to the field of sulfur paste reuse, and particularly relates to a method for preparing sulfur dioxide by using sulfur paste. The method comprises the following steps: a, airing in the sun; b, breaking; c, screening; d, mixing ingredients; e, roasting. Compared with the prior art, the method has the following advantages and benefits: white sand or quartz stone is added into the sulfur paste as an additive, so that the use ratio of the sulfur paste is effectively improved; besides, white sand and quartz stone are waste leftover materials during the production process, so that environmental pollution caused by solid waste is reduced.
Description
Technical field
The invention belongs to sulphur cream recycling field, particularly relate to a kind of method utilizing sulphur cream to prepare sulfurous gas.
Background technology
Sulphur cream is the by product that coal tar industry coal gas desulfurization is produced, and it is the paste that a kind of water content is very high, and main component is made up of elemental sulfur and water, and China is coal production maximum in the world and country of consumption, the SO discharged in atmospheric environment
2in have 90% come from dry coal-fired.Desulfuration and decyanation process is carried out to coal-fired flue-gas and coal gas essential.At present, coke-oven plant of China and other are for fire coal tail gas process many uses HPF wet desulfurizing process, adopt the advantages such as the method has less investment, desulfuration efficiency is high, running cost is low, consuming little energy, convenient operation, be widely used at desulfuration field, sulphur cream is the product that wet desulphurization obtains, according to statistics, the byproduct sulphur cream producing the coke-oven plant of 1,000,000 tons per year just has more than 2000 ton every year.
At present, the process of existing coke-oven plant to sulphur cream mainly concentrates on both direction, one is be further processed sulphur cream, purify, and then sell, two is utilize sulphur cream to make raw material production, produce the raw material that other have the Chemical Manufacture of economic worth, as sulfuric acid, ammonium sulfite, sulphur, inorganic salt etc. have the raw material of the Chemical Manufacture of economic worth.
But, due to after the airing of sulphur cream in Powdered, be difficult to when producing sulfurous gas (utilizing sulfurous gas can prepare sulfuric acid or ammonium sulfite) to its fluidized bed roasting control sinter process requirement, the burning yield that result in sulphur cream is extremely low, final sulphur cream cannot well utilize, and a large amount of sulphur cream is wasted.
Summary of the invention
The present invention is directed to above-mentioned existing sinter process and cannot effectively utilize the technical problems such as sulphur cream, propose a kind of sulphur cream that utilizes reasonable in design, easy to operate, that production cost is low, sulphur cream utilization ratio is high and prepare the method for sulfurous gas.
In order to achieve the above object, the technical solution used in the present invention is, the invention provides a kind of method utilizing sulphur cream to prepare sulfurous gas, comprises the following steps:
A, airing: sulphur cream larger for water content is carried out airing, make the water content of sulphur cream between 10% ~ 15%;
B, fragmentation: white sand or quartzite raw material are carried out Mechanical Crushing, is crushed to granular size between 0.5mm ~ 5mm;
C, screening: filter out the white sand of particle between 0.5mm ~ 3mm or quartzite, what particle was larger returns to b step;
D, mix: the sulphur cream after airing is mixed with the white sand after screening or quartzite, both mass ratios of mixing are 1:0.5 ~ 1:0.6;
E, roasting: the sulphur cream mixed and white sand or quartzite are sent into boil and burns roasting in stove, burning of boiling stove near-bottom temperature controls at 800 DEG C ~ 850 DEG C, zone of combustion temperature controls at 900 DEG C ~ 950 DEG C, top chamber temperature controls at 900 DEG C ~ 1000 DEG C, roasting time is 8s ~ 10s, can obtain sulfur dioxide gas.
As preferably, in described a step, the moisture controlled of sulphur cream is between 10% ~ 15%.
As preferably, in described b step, it is between 1mm ~ 3mm that described white sand or quartzite are crushed to granular size.
Compared with prior art, advantage of the present invention and positively effect are,
1, the present invention by adding white sand or quartzite in sulphur cream, and it can be used as additive, effectively raise the utilization ratio of sulphur cream, meanwhile, white sand and quartzite are the useless corner material in production process, reduces solid waste pollution environment.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with embodiment, the present invention will be further described.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt and be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of the specific embodiment of prospectus below.
In following described embodiment, all be described directly to obtain sulphur cream from coke-oven plant for condition, can certainly by buying the mode of sulphur cream finished product, if within the scope described in following examples by the water-content of sulphur cream finished product bought, airing link can be saved.
Embodiment 1, the method producing sulfurous gas that it take white sand as additive that the present embodiment provides a kind of, sulphur cream is raw material.
First the sulphur cream obtained through wet desulfurizing process is carried out airing, reduce the moisture in sulphur cream, it is made to become thick, due to weather, weather, temperature, the different conditions such as region, therefore, content mainly through test sulphur cream moisture judges whether that airing completes, in the present embodiment, (after airing, the sulphur content of sulphur cream is generally between 70% to 80%, moisture is less than 15% and is greater than 10%, because the composition of sulphur cream may be inconsistent, general after guaranteeing that airing completes, sulphur content in sulphur cream is between 70% ~ 80%, namely calculate airing to complete, generally now, water-content in sulphur cream is between 10% ~ 15%, in the present embodiment, preferred sulphur content is the sulphur cream of 70%, therefore the water content of sulphur cream is between 10% ~ 15%, for the best, the sulphur cream of this kind of ratio comparatively for convenience of and white sand or quartzite mix), then white sand (is had another name called white sand, that a kind of quality is hard, wear-resisting, the silicates mineral of stable chemical nature) carry out Mechanical Crushing, the diameter being crushed to particle is less than 5mm, but also should not be too little, too little words, follow-up mixing step can be affected, minimum also should at more than 0.5mm, preferential is between 1mm ~ 3mm, in the present embodiment, the granular size of white sand is 0.5mm ~ 3mm.
Then the white sand that fragmentation is good is screened, the specification in the hole of the screen cloth of screening is 3mm*3mm, the larger diameter of screening residue sends Mechanical Crushing back to, the sulphur cream of the white sand screened with airing meeting is fully mixed, blending ratio specifically sees sulphur content in sulphur cream, suppose the content of sulphur in sulphur cream 70% words, so the proportioning of sulphur cream and Limbra Stone should at 1:0.5, then being directly delivered to boil by the mixture of the white sand mixed and sulphur cream burns in stove, because roasting time is shorter, when being delivered in stoving oven, the bottom temperature of stoving oven should control at 800 DEG C ~ 850 DEG C, zone of combustion temperature controls at 900 DEG C ~ 950 DEG C, top chamber temperature controls at 900 DEG C ~ 1000 DEG C, roasting time is generally 8s ~ 10s, be 9s in the present embodiment, sulfur dioxide gas can be obtained, sulfur dioxide gas is also the main raw material manufacturing sulfuric acid and ammonium sulphite, and this type of technique is maturation process, in the present embodiment, just not in the method describing preparing sulfuric acid by using sulfur dioxide or ammonium sulphite.
Because roasting time is very short, needing continuous print to burn charging in stove to boiling, therefore strictly should control the use of secondary air well in roasting process, make spout be micro-vacuum state; Furnace bottom pressure is burnt higher than 1000mmH when boiling
2during O post, carry out deslagging, the slag drum-type sand washer of discharge carries out cooling cleaning, and return stock yard and carry out airing, the slag moisture requirement after airing is less than 8%, slag qualified for airing is transported to raw material silo and continues to use in order to mixing white sand.
After testing, the method using embodiment 1 to provide is prepared in the method for sulfurous gas, the residual sulphur of ashes: <0.05%; Burning yield: >99.95%.
Embodiment 2, the method producing sulfurous gas that it take quartzite as additive that the present embodiment provides a kind of, sulphur cream is raw material.
Quartzite is the main component of grouan; therefore; in the engraving utilizing grouan, a large amount of scrap stock can be produced, these type of scrap stock due to material harder; not easily process; finally become solid waste pollution environment, it can be used as additive to use now, effectively solve the problem of solid waste; meanwhile, process sulphur cream and also important meaning is played to environment protection.
Its method is specific as follows, first the sulphur cream obtained through wet desulfurizing process is carried out airing, reduces the moisture in sulphur cream, and in the present embodiment, the sulphur content of the sulphur cream after airing is greater than and 70% is less than 80%, moisture is less than 15% and is greater than 10%, namely calculates airing and completes; Then quartzite is carried out Mechanical Crushing, the diameter being crushed to particle is less than 5mm, but also should not be too little, too little words, follow-up mixing step can be affected, minimum also should at more than 0.5mm, preferential is between 1mm ~ 3mm, in the present embodiment, the granular size of quartzite is 1mm ~ 3mm.
Then the quartzite that fragmentation is good is screened, the specification in the hole of the screen cloth of screening is 3mmX3mm, the larger diameter of screening residue sends Mechanical Crushing back to, by the quartzite that screened and sulphur cream (when moisture is about 8% ~ 10%, sulphur cream is Powdered) fully mix, blending ratio specifically sees sulphur content in sulphur cream, suppose the content of sulphur in sulphur cream 70% words, so sulphur cream should mix in the ratio of 1:0.6 with the proportioning mixed of quartzite, then being directly delivered to boil by the mixture of the quartzite mixed and sulphur cream burns in stove, because roasting time is shorter, when being delivered in the burning stove that boils, the bottom temperature burning stove that boils should control at 800 DEG C ~ 850 DEG C, zone of combustion temperature controls at 900 DEG C ~ 950 DEG C, top chamber temperature controls at 900 DEG C ~ 1000 DEG C, roasting time is generally 8s ~ 10s, be 9s in the present embodiment, sulfur dioxide gas can be obtained, sulfur dioxide gas be also within the main raw material of sulfuric acid and ammonium sulphite, and this type of technique is maturation process, in the present embodiment, just not in the method describing preparing sulfuric acid by using sulfur dioxide or ammonium sulphite.
Because roasting time is very short, need continuous print to charging in the stove that boils, therefore strictly should control the use of secondary air well in roasting process, the air output of secondary air should control, at 10% ~ 15% of end wind air quantity, to make spout be micro-vacuum state; Furnace bottom pressure is burnt higher than 1000mmH when boiling
2during O post, carry out deslagging, the slag drum-type sand washer of discharge carries out cooling cleaning, and return stock yard and carry out airing, the slag moisture requirement after airing is less than 8%, slag qualified for airing is transported to raw material silo and continues to use in order to mixing quartzite.
After testing, the method using embodiment 2 to provide is prepared in the method for sulfurous gas, the residual sulphur of ashes: <0.05% burning yield: >99.95%.
The above; it is only preferred embodiment of the present invention; it is not restriction the present invention being made to other form; the Equivalent embodiments that any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as equivalent variations is applied to other field; but everyly do not depart from technical solution of the present invention content; according to any simple modification, equivalent variations and remodeling that technical spirit of the present invention is done above embodiment, still belong to the protection domain of technical solution of the present invention.
Claims (3)
1. utilize sulphur cream to prepare a method for sulfurous gas, it is characterized in that, comprise the following steps:
A, airing: sulphur cream larger for water content is carried out airing, make the water content of sulphur cream between 10% ~ 15%;
B, fragmentation: white sand or quartzite raw material are carried out Mechanical Crushing, is crushed to granular size between 0.5mm ~ 5mm;
C, screening: filter out the white sand of particle between 0.5mm ~ 3mm or quartzite, what particle was larger returns to b step;
D, mix: the sulphur cream after airing is mixed with the white sand after screening or quartzite, both ratios of mixing are 1:0.5 ~ 1:0.6;
E, roasting: the sulphur cream mixed and white sand or quartzite are sent into boil and burns roasting in stove, burning of boiling stove near-bottom temperature controls at 800 DEG C ~ 850 DEG C, zone of combustion temperature controls at 900 DEG C ~ 950 DEG C, top chamber temperature controls at 900 DEG C ~ 1000 DEG C, roasting time is 8s ~ 10s, can obtain sulfur dioxide gas.
2. the method utilizing sulphur cream to prepare sulfurous gas according to claim 1, in described a step, the water content control of sulphur cream is between 10% ~ 15%.
3. the method utilizing sulphur cream to prepare sulfurous gas according to claim 1, is characterized in that, in described b step, it is between 1mm ~ 3mm that described white sand or quartzite are crushed to granular size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510508317.0A CN105060257A (en) | 2015-08-18 | 2015-08-18 | Method for preparing sulfur dioxide by using sulfur paste |
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| CN201510508317.0A CN105060257A (en) | 2015-08-18 | 2015-08-18 | Method for preparing sulfur dioxide by using sulfur paste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176594A (en) * | 2016-03-11 | 2017-09-19 | 山东天泰钢塑有限公司 | It is a kind of continuously to burn device and technique that raw sulphur prepares sulfur dioxide gas |
| CN109970081A (en) * | 2019-03-22 | 2019-07-05 | 扬州康龙环保工程有限公司 | A method of sodium pyrosulfite is prepared using coking sulphur cream |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1560524A (en) * | 1977-11-04 | 1980-02-06 | Le Teknolog I Im Lensoveta | Method of preparing sulphur dioxide |
| CN1909281A (en) * | 2006-08-04 | 2007-02-07 | 河南豫光金铅股份有限公司 | Processing technology for slab lattice and plaster of lead-acid accumulator |
| CN201990488U (en) * | 2011-01-24 | 2011-09-28 | 江苏中显集团有限公司 | Device for directly incinerating raw sulfur to prepare sulfur dioxide |
| CN102815673A (en) * | 2012-08-27 | 2012-12-12 | 徐昭平 | Sulfur slurry or sulfur paste conversion device and conversion process |
| CN203855411U (en) * | 2014-01-23 | 2014-10-01 | 北京华泰焦化工程技术有限公司 | Device for producing liquid sulfur dioxide from sulfur foam or sulfur-containing impurities |
-
2015
- 2015-08-18 CN CN201510508317.0A patent/CN105060257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1560524A (en) * | 1977-11-04 | 1980-02-06 | Le Teknolog I Im Lensoveta | Method of preparing sulphur dioxide |
| CN1909281A (en) * | 2006-08-04 | 2007-02-07 | 河南豫光金铅股份有限公司 | Processing technology for slab lattice and plaster of lead-acid accumulator |
| CN201990488U (en) * | 2011-01-24 | 2011-09-28 | 江苏中显集团有限公司 | Device for directly incinerating raw sulfur to prepare sulfur dioxide |
| CN102815673A (en) * | 2012-08-27 | 2012-12-12 | 徐昭平 | Sulfur slurry or sulfur paste conversion device and conversion process |
| CN203855411U (en) * | 2014-01-23 | 2014-10-01 | 北京华泰焦化工程技术有限公司 | Device for producing liquid sulfur dioxide from sulfur foam or sulfur-containing impurities |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176594A (en) * | 2016-03-11 | 2017-09-19 | 山东天泰钢塑有限公司 | It is a kind of continuously to burn device and technique that raw sulphur prepares sulfur dioxide gas |
| CN109970081A (en) * | 2019-03-22 | 2019-07-05 | 扬州康龙环保工程有限公司 | A method of sodium pyrosulfite is prepared using coking sulphur cream |
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Application publication date: 20151118 |