CN85100101A - Granular desulfurizer - Google Patents
Granular desulfurizer Download PDFInfo
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- CN85100101A CN85100101A CN 85100101 CN85100101A CN85100101A CN 85100101 A CN85100101 A CN 85100101A CN 85100101 CN85100101 CN 85100101 CN 85100101 A CN85100101 A CN 85100101A CN 85100101 A CN85100101 A CN 85100101A
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- desulfurizer
- limestone
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- fluidized bed
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
一种由石灰石组成的流化床燃烧脱硫剂，它是将石灰石粉加少量的粘土用水成型，或用水泥生料，用水团聚成型。这种粒状脱硫剂不需要对现有的流化床锅炉进行结构上的改装即可使脱硫效率达85％以上，大幅度地提高石灰石的利用率。A fluidized bed combustion desulfurizer composed of limestone, which is formed by adding a small amount of clay to limestone powder with water, or using cement raw meal and agglomerating with water. The granular desulfurizer can make the desulfurization efficiency reach more than 85% without structural modification of the existing fluidized bed boiler, and greatly improve the utilization rate of limestone.
Description
本发明涉及一种流化床燃烧脱硫剂。The invention relates to a fluidized bed combustion desulfurizer.
在现有的流化床脱硫技术中，多用石灰石粒脱硫。因此表面积过小，一般钙利用率仅20%左右。采用细粒度石灰石粉又因床内速度太高，颗粒在床内停留时间缩短，其利用率亦不超过20%。In the existing fluidized bed desulfurization technology, limestone is mostly used for desulfurization. Therefore, the surface area is too small, and the general calcium utilization rate is only about 20%. The use of fine-grained limestone powder and because the bed velocity is too high, the residence time of particles in the bed is shortened, and its utilization rate does not exceed 20%.
联邦德国鲁奇（Lurgi）公司和美国贝特尔（Battel ）实验室提出的循环床燃烧方案可使颗粒在床内停留时间延长，钙利用率可达40%左右，但这种锅炉结构复杂、阻力大、电耗高。采用飞灰回到低速再燃床的双床方案同样可提高钙利用率到30%左右。Federal German Lurgi (Lurgi) and American Betel (Battel) ) The circulating bed combustion scheme proposed by the laboratory can prolong the residence time of particles in the bed, and the calcium utilization rate can reach about 40%, but this kind of boiler has complex structure, large resistance and high power consumption. The double-bed scheme using fly ash back to the low-speed reburning bed can also increase the calcium utilization rate to about 30%.
美国布鲁开文（Brookhaven）国家实验室和日本名古屋大学曾用水泥熟料（Cement Clinker）成型作脱硫剂，但钙利用率亦仅为20%左右。（如日本“燃料协会志”第63卷第4号（1984）P269-274报导）。The Brookhaven National Laboratory of the United States and the Nagoya University of Japan have used cement clinker (Cement Clinker) molding as a desulfurizer, but the calcium utilization rate is only about 20%. (As reported in Japan's "Fuel Association Journal" Volume 63 No. 4 (1984) P269-274).
本发明的任务是提供一种高效脱硫剂，它能够在不需要改装结构的现有流化床锅炉中使用时既有高的脱硫效率，又有高的石灰石利用率。The task of the present invention is to provide a high-efficiency desulfurizer, which can have both high desulfurization efficiency and high limestone utilization rate when used in the existing fluidized bed boiler without refitting the structure.
本发明的特点是将石灰石粉加少量的粘土作粘结剂，用水团聚成型;或用水泥生料用水团聚成型。成型后的合理直径可为5～10毫米。其原理主要是脱硫剂乾燥时，其中水分蒸发以及石灰石受热分解时析放CO2所造成的空隙总量大于石灰石粒单纯分解时的空隙;孔隙的平均孔径也增大，有利于气体向脱硫剂内部扩散。团聚成型的颗粒可以在床内作长时间停留，以粘土作粘结剂除成本低廉外，更使脱硫剂在床内因撞击而磨耗，磨耗作用使脱硫剂表面不断更新。上述因素均有利于提高钙利用率。The present invention is characterized in that the limestone powder is added with a small amount of clay as a binder, which is agglomerated with water; or cement raw meal is agglomerated with water. The reasonable diameter after molding can be 5-10 mm. The principle is that when the desulfurizer is dry, the total amount of voids caused by the evaporation of water and the release of CO 2 during the thermal decomposition of the limestone is greater than that of the simple decomposition of the limestone particles; internal diffusion. The agglomerated particles can stay in the bed for a long time, and the use of clay as the binder is not only low in cost, but also causes the desulfurizer to wear out due to impact in the bed, and the abrasion effect makes the surface of the desulfurizer constantly renewed. The above factors are conducive to improving calcium utilization.
本发明突破了已有技术，不需要对现行的流化床锅炉进行结构上的改装，即可使脱硫效率达85%以上，可使钙利用率大幅度提高。其实施例为：在宜昌市染织总厂的4吨/时锅炉上，使用石灰石粉和粘土（比例为9∶1）用水团聚为5～8毫米的球型脱硫剂，在燃用发热量为3300大卡/公斤，可燃硫含量为97%的劣质高硫烟煤时，使脱硫效率达86%，钙利用率达85%。The invention breaks through the existing technology, and can make the desulfurization efficiency reach more than 85% without structural modification of the existing fluidized bed boiler, and can greatly improve the utilization rate of calcium. Its embodiment is: on the 4 tons/hour boiler of Yichang City Dyeing and Weaving General Factory, use limestone powder and clay (ratio 9:1) to agglomerate with water into a spherical desulfurizer of 5-8 mm, and the calorific value of combustion is When the low-quality high-sulfur bituminous coal with a combustible sulfur content of 97% is 3300 kcal/kg, the desulfurization efficiency can reach 86%, and the calcium utilization rate can reach 85%.
燃煤造成的二氧化硫污染是我国许多地区酸雨频发的主要根源，目前尚未有经济有效的措施用于防止环境污染。本发明可以降低SO2排放，改善环境污染，所采用的原料是廉价易得的石灰石和粘土，制作工艺成熟。同时，由于本发明的成型特点和高的钙利用率，可将原在煤中的硫以硫酸钙的形式固定下来，它可以成为制水泥和制酸的好原料。为硫资源回收和在取得良好环境效益、社会效益的同时取得一定经济效益创造了条件。Sulfur dioxide pollution caused by coal burning is the main source of frequent acid rain in many areas of our country. At present, there are no economical and effective measures to prevent environmental pollution. The invention can reduce SO2 emission and improve environmental pollution. The raw materials used are cheap and easily available limestone and clay, and the manufacturing process is mature. At the same time, due to the forming characteristics and high calcium utilization rate of the present invention, the sulfur in the coal can be fixed in the form of calcium sulfate, which can be a good raw material for cement and acid production. It creates conditions for the recovery of sulfur resources and certain economic benefits while achieving good environmental and social benefits.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100101 CN85100101A (en) | 1985-04-01 | 1985-04-01 | Granular desulfurizer |
| JP7538786A JPS62190308A (en) | 1985-04-01 | 1986-04-01 | Pelletized desulfurizing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100101 CN85100101A (en) | 1985-04-01 | 1985-04-01 | Granular desulfurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85100101A true CN85100101A (en) | 1986-08-20 |
Family
ID=4790885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85100101 Pending CN85100101A (en) | 1985-04-01 | 1985-04-01 | Granular desulfurizer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS62190308A (en) |
| CN (1) | CN85100101A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437366A (en) * | 2014-11-13 | 2015-03-25 | 安徽凤凰滤清器股份有限公司 | Uneasily-disintegrated mixed active carbon desulfurizing agent and preparation method thereof |
| CN107261826A (en) * | 2017-07-31 | 2017-10-20 | 董小军 | A kind of cement kiln flue gas catalytically fixed sulphur pulvis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606908B2 (en) * | 1977-08-04 | 1985-02-21 | 日本坩堝株式会社 | Method for producing active silicon carbide powder containing boron component |
| JPH0230739B2 (en) * | 1982-05-04 | 1990-07-09 | Babcock Hitachi Kk | DATSURYUZAINOSEIZOHOHO |
-
1985
- 1985-04-01 CN CN 85100101 patent/CN85100101A/en active Pending
-
1986
- 1986-04-01 JP JP7538786A patent/JPS62190308A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437366A (en) * | 2014-11-13 | 2015-03-25 | 安徽凤凰滤清器股份有限公司 | Uneasily-disintegrated mixed active carbon desulfurizing agent and preparation method thereof |
| CN107261826A (en) * | 2017-07-31 | 2017-10-20 | 董小军 | A kind of cement kiln flue gas catalytically fixed sulphur pulvis |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62190308A (en) | 1987-08-20 |
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| WD01 | Invention patent application deemed withdrawn after publication |