CN104860747A - Method for preparing sustained-release composite fertilizer with dust waste in active-carbon-activated tail gas - Google Patents
Method for preparing sustained-release composite fertilizer with dust waste in active-carbon-activated tail gas Download PDFInfo
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- CN104860747A CN104860747A CN201510167378.5A CN201510167378A CN104860747A CN 104860747 A CN104860747 A CN 104860747A CN 201510167378 A CN201510167378 A CN 201510167378A CN 104860747 A CN104860747 A CN 104860747A
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- dust waste
- tail gas
- tackiness agent
- slow
- urea
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Abstract
The invention discloses a method for preparing a sustained-release composite fertilizer with dust waste in active-carbon-activated tail gas. The dust waste and weathered coal with a humic acid content higher than 30% are adopted as a coating material; a binding agent is sprayed on urea particles; and the urea particles are coated with the coating material, such that the sustained-release composite fertilizer is obtained. According to the invention, the contents of the dust waste in the active-carbon-activated tail gas are similar to those in active carbon, such that the dust waste has good adsorption performance on urea and humic acid. When the dust waste is prepared into the composite fertilizer, a sustained release purpose can be achieved.
Description
Technical field
The invention belongs to absorbent charcoal activation furnace tail gas disposal technique field, a kind of method that specifically in absorbent charcoal activation furnace tail gas, comprehensive dust utilizes.
Background technology
In Activated Carbon Production, be the dust waste of more than 80 orders containing a large amount of fineness in the activation tail gas that activation workshop section produces, its composition is close to gac, and this dust grain corpusculum is light, hardness is large, and wetting ability is poor, high dispersing, have extremely strong contamination, not easily clean, pole refractory is managed.
Summary of the invention
The present invention is directed in current production process of activated carbon, the activation tail gas that activation workshop section produces contains the dust waste being difficult in a large number administer, and discloses the Application way of dust waste in a kind of gac activation tail gas.
Technical scheme of the present invention realizes as follows.
1, the dust waste in absorbent charcoal activation furnace tail gas is collected with sack cleaner.
2, by content of humic acid be more than 30% weathered coal grinding become 80 order fine powders.
3, be that the granular urea of 3mm ~ 4mm is heated to 40 DEG C ~ 45 DEG C in the rotary drum coating machine of heating system by diameter, then spray to particulate material with tackiness agent, make urea granules is stained with tackiness agent.
4, absorbent charcoal activation furnace dust waste is mixed by 2:1 with the weathered coal after grinding, make wrapper.
5, the absorbent charcoal activation furnace dust waste mixed and weathered coal fine powder are coated on the urea granules material with tackiness agent by blanking device, roll through rotary drum and wrap up, be i.e. obtained coated composite slow-release fertilizer.
Described tackiness agent is W-Gum, and its concentration is 2% ~ 5%.
The addition of described tackiness agent presses the tackiness agent that per kilogram urea adds 3% ~ 5%.
Described wrapper consumption is 20% ~ 30% of urea granules material weight.
After dust waste in absorbent charcoal activation furnace tail gas is collected by the present invention, because its composition is close to gac, it has stronger adsorption to the effective constituent in urea and humic acid, after these dust wastes and urea are made coated composite fertilizer, can slow releasing nutrient, this composite fertilizer can as slow-release compound fertilizer.The present invention had both alleviated the pollution of activated material dust to environment and had turn increased its utility value, served the object reducing discharging synergy.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Collect the dust waste in absorbent charcoal activation furnace tail gas with sack cleaner, be that the weathered coal grinding of more than 30% becomes 80 order fine powders by content of humic acid simultaneously, mixes, make wrapper by weight 2:1.Be that the granular urea of 3mm ~ 4mm is heated to 40 DEG C ~ 45 DEG C in the rotary drum coating machine of heating system again by diameter, then spray to particulate material as tackiness agent with the W-Gum that concentration is 3%, make urea granules is stained with tackiness agent.The wrapper made is coated on the urea granules material with tackiness agent by blanking device, makes wrapper consumption be 25% of urea granules material, roll through rotary drum and wrap up, obtained coated composite slow-release fertilizer.
The slow release type composite fertilizer of preparing by above method can reach the specification of quality of slow-release fertilizer after tested.
1. slowly-releasing rate: 25 DEG C of hydrostatic soak 24h, and nutrient release rate is 8%-10%.
2.28d accumulation nutrient release rate is 60 ~ 65%.
This slow-release compound fertilizer can significantly reduce fertilizer application amount and fertilizer application frequency after applying, humic acid in its weathered coal can play the effect of improvement soil, the open-celled structure of active carbon dust not only can adsorb the effective constituent in chemical fertilizer, can also play the effect of water-retaining effect, and corn starch adhesive agent environmental protection avoids the negative impact of traditional organic binder bond to soil and groundwater.
Claims (4)
1., by a method for dust waste slow-release compound fertilizer in gac activation tail gas, it is characterized in that comprising the steps:
(1), the dust waste in gac activation tail gas is collected with sack cleaner;
(2), by content of humic acid be more than 30% weathered coal grinding become 80 order fine powders;
(3), by diameter be that the granular urea of 3mm ~ 4mm is heated to 40 DEG C ~ 45 DEG C in the rotary drum coating machine of heating system, then spray to particulate material with tackiness agent, make urea granules is stained with tackiness agent;
(4), by absorbent charcoal activation furnace dust waste mix by 2:1 with the weathered coal after grinding, make wrapper;
(5), dust waste and weathered coal fine powder in the gac mixed activation tail gas are coated on the urea granules material with tackiness agent by blanking device, roll through rotary drum and wrap up, be i.e. obtained coated composite slow-release fertilizer.
2. the method for dust waste slow-release compound fertilizer in a kind of absorbent charcoal activation furnace tail gas as claimed in claim 1, it is characterized in that described tackiness agent is W-Gum, its concentration is 2% ~ 5%.
3. the method for dust waste slow-release compound fertilizer in a kind of absorbent charcoal activation furnace tail gas as claimed in claim 1, is characterized in that the addition of described tackiness agent adds the tackiness agent of 3% ~ 5% by per kilogram urea.
4. the method for dust waste slow-release compound fertilizer in a kind of absorbent charcoal activation furnace tail gas as claimed in claim 1, is characterized in that described wrapper consumption is 20% ~ 30% of urea granules material weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167378.5A CN104860747A (en) | 2015-04-10 | 2015-04-10 | Method for preparing sustained-release composite fertilizer with dust waste in active-carbon-activated tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167378.5A CN104860747A (en) | 2015-04-10 | 2015-04-10 | Method for preparing sustained-release composite fertilizer with dust waste in active-carbon-activated tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104860747A true CN104860747A (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510167378.5A Pending CN104860747A (en) | 2015-04-10 | 2015-04-10 | Method for preparing sustained-release composite fertilizer with dust waste in active-carbon-activated tail gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN104860747A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074206A (en) * | 1993-01-14 | 1993-07-14 | 北京化工学院 | Coated slow release fertilizer and method for making thereof |
| CN101565338A (en) * | 2009-06-01 | 2009-10-28 | 四川省林业科学研究院 | Method for preparing fertilizer adsorbing volatilizing nitrogen |
| CN103254004A (en) * | 2013-04-23 | 2013-08-21 | 苏州谷力生物科技有限公司 | Production technology of humic acid sustained-release fertilizer |
-
2015
- 2015-04-10 CN CN201510167378.5A patent/CN104860747A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074206A (en) * | 1993-01-14 | 1993-07-14 | 北京化工学院 | Coated slow release fertilizer and method for making thereof |
| CN101565338A (en) * | 2009-06-01 | 2009-10-28 | 四川省林业科学研究院 | Method for preparing fertilizer adsorbing volatilizing nitrogen |
| CN103254004A (en) * | 2013-04-23 | 2013-08-21 | 苏州谷力生物科技有限公司 | Production technology of humic acid sustained-release fertilizer |
Non-Patent Citations (3)
| Title |
|---|
| 姚素梅，陈翠玲: "《新型肥料施用指南》", 28 February 2011 * |
| 方天翰: "《复混肥料生产技术手册》", 28 February 2003 * |
| 胡徐腾: "《走向炼化技术前沿》", 31 January 2010 * |
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Application publication date: 20150826 |