CN104310824A - Method for quickly drying flue gas desulfurization gypsum - Google Patents
Method for quickly drying flue gas desulfurization gypsum Download PDFInfo
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- CN104310824A CN104310824A CN201410505262.3A CN201410505262A CN104310824A CN 104310824 A CN104310824 A CN 104310824A CN 201410505262 A CN201410505262 A CN 201410505262A CN 104310824 A CN104310824 A CN 104310824A
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- flue gas
- gas desulfurization
- additive
- desulfurization gypsum
- industrial waste
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Abstract
The invention discloses a method for quickly drying flue gas desulfurization gypsum. The method comprises the following steps: adding 1.0-2.0wt% of an additive into the flue gas desulfurization gypsum, uniformly stirring, and then naturally standing until the flue gas desulfurization gypsum reaches drying requirements. According to the method, industrial waste residue is used as the additive of raw materials, and conventional energy resources do not need to be consumed. The additive is made from industrial waste residues, does not consume conventional energy resources and is simple in production process; since the raw material is the industrial waste residue, resource utilization of the industrial waste residue is achieved, and energy resources are saved simultaneously. By utilizing the method, operation is simple and convenient, the purpose of dewatering can be achieved in natural state, the effect is good, the operation period is short, and the performance of a product can not be changed due to low mixing amount of the additive.
Description
Technical field
What the present invention relates to is a kind of desulfurated plaster drying means, a kind of in particular method of rapid drying desulfurated plaster.
Background technology
The equipment such as the boiler of power station, heat power plant or other industrial enterprises or Reaktionsofen are using fire coal as the energy, and fired coal combustion produces sulfur-bearing harmful smoke in process of production, mainly sulfurous gas.At present, the minimizing topsoil carried out on a large scale in China, to create in the environmental engineering in clear water blue sky, the discharge rich and influential family of much sulfurous gas is implementing flue gas desulfurization project, especially particularly outstanding with Coal-fired Thermal Power flue gas desulfurization.No matter be newly-built or change, the sulfur dioxide emissions enterprise of the power plant that extends and other fire coals, in implemented flue gas desulfurization project, to adopt wet desulfurization of flue gas by limestone-gypsum method technique comparatively general.
Desulfurated plaster mainly exists with the form of terra alba, but produce in flue gas desulfurization technique process containing free water content in the desulfurated plaster of free-water generally 8% ~ 15% within the scope of this, still cannot directly use, need to solve the follow-up technical problem dehydrated, desulfurated plaster is finally made to change the lower product of free-water water content into, can be used as cement setting retarder afterwards or become the raw material of other industry, reach the requirement of the byproduct resource utilization recycling of wet desulphurization.Traditional desulfurated plaster drying means adopts the method for heating, drying, normally the material after pulverizing is sent into heat drying in calcining furnace, fluidizing furnace, rotary kiln and the equipment such as interval or continuous marmite, consumes a large amount of fire coals or electric power.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of method of rapid drying desulfurated plaster, by adding the rapid drying that a small amount of admixture can realize desulfurated plaster.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
(1) by admixture by weight 1.0 ~ 2.0%, join in desulfurated plaster;
(2) stirred, be then naturally placed to desulfurated plaster and reach drying and require.
Described admixture comprises slag 40% ~ 60%, unslaked lime 10% ~ 20%, grog 2% ~ 20%, gypsum 5% ~ 15%, exciting agent 1 ~ 3%, and all the other are impurity, by weight.
The main component of admixture of the present invention is industrial residue, and in admixture, exciting agent is that alum and trolamine mix according to weight ratio 1:1.Admixture is met after water, can with moisture rapid reaction, the hydrated product of formation contains a large amount of crystal water, thus free water is converted into Bound moisture, reaches mummification object.
The present invention has the following advantages compared to existing technology: the admixture that the present invention utilizes industrial residue to be raw material, without the need to consuming conventional energy resources.This admixture production technique is simple, and raw material is industrial residue, while reaching industrial waste residue resourceization utilization, and save energy.Easy and simple to handle, dehydration object can be reached under state of nature, not only effective, the operational cycle is short, and due to admixture dosage low, the performance of product can not be changed.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The present embodiment comprises the following steps:
(1) by admixture by weight 1.0%, join in desulfurated plaster, admixture comprises slag 40%, unslaked lime 10%, grog 2%, gypsum 5%, exciting agent 1%, all the other are impurity, and by weight, exciting agent is that alum and trolamine mix according to weight ratio 1:1;
(2) stirred, then naturally placed 3h, 24h, 48h, measured the water content of desulfurated plaster respectively.
Embodiment 2
Admixture by weight 1.5% in the present embodiment, admixture comprises slag 60%, unslaked lime 20%, grog 20%, gypsum 15%, exciting agent 3%, and all the other are impurity, and by weight, other embodiments are identical with embodiment 1.
Embodiment 3
Admixture by weight 2.0% in the present embodiment, admixture comprises slag 50%, unslaked lime 15%, grog 10%, gypsum 10%, exciting agent 2%, and all the other are impurity, and by weight, other embodiments are identical with embodiment 1.
As shown in table 1 to desulfurated plaster change of moisture content under embodiment 1, embodiment 2 and embodiment 3 different addition quantity admixture:
Desulfurated plaster water content under table 1 different addition quantity admixture
Analyze from table 1, after the desulfurated plaster mummification 24h after admixture 1.0% admixture, water content can be reduced to 1.30%, more satisfactory, can be used for desulfurated plaster subsequent disposal and disposes and recycling.Compared with furnace drying method, the present invention reaches rapid drying desulfurated plaster object, simultaneously save energy, reduce costs.
Claims (2)
1. a method for rapid drying desulfurated plaster, is characterized in that, comprises the following steps:
(1) by admixture by weight 1.0 ~ 2.0%, join in desulfurated plaster;
(2) stirred, be then naturally placed to desulfurated plaster and reach drying and require.
2. the method for a kind of rapid drying desulfurated plaster according to claim 1, is characterized in that: described admixture comprises slag 40% ~ 60%, unslaked lime 10% ~ 20%, grog 2% ~ 20%, gypsum 5% ~ 15%, exciting agent 1 ~ 3%, all the other are impurity, by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505262.3A CN104310824B (en) | 2014-09-26 | 2014-09-26 | A kind of method of rapid draing desulfurated plaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505262.3A CN104310824B (en) | 2014-09-26 | 2014-09-26 | A kind of method of rapid draing desulfurated plaster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104310824A true CN104310824A (en) | 2015-01-28 |
| CN104310824B CN104310824B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410505262.3A Active CN104310824B (en) | 2014-09-26 | 2014-09-26 | A kind of method of rapid draing desulfurated plaster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047653A (en) * | 2020-09-14 | 2020-12-08 | 胡礼梅 | Desulfurized gypsum rotation type stoving recovery unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234857A (en) * | 2008-02-29 | 2008-08-06 | 江苏瑞和化肥有限公司 | Method for drying granular phosphogypsum by using sulfuric acid tail gas |
| CN103274615A (en) * | 2013-06-03 | 2013-09-04 | 郑州市鼎力干燥设备有限公司 | Desulfurization gypsum drying and calcining equipment, and production process |
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2014
- 2014-09-26 CN CN201410505262.3A patent/CN104310824B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234857A (en) * | 2008-02-29 | 2008-08-06 | 江苏瑞和化肥有限公司 | Method for drying granular phosphogypsum by using sulfuric acid tail gas |
| CN103274615A (en) * | 2013-06-03 | 2013-09-04 | 郑州市鼎力干燥设备有限公司 | Desulfurization gypsum drying and calcining equipment, and production process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047653A (en) * | 2020-09-14 | 2020-12-08 | 胡礼梅 | Desulfurized gypsum rotation type stoving recovery unit |
| CN112047653B (en) * | 2020-09-14 | 2022-01-28 | 山西鑫途化工有限公司 | Desulfurized gypsum rotation type stoving recovery unit |
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| Publication number | Publication date |
|---|---|
| CN104310824B (en) | 2016-09-07 |
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